Inner damping luggage wheel

Abstract

The utility model provides an internal damping luggage wheel, which relates to the technical field of luggage and comprises a fixing seat, a spring fixing seat clamped with the fixing seat and a spring. A fixing rod transversely penetrates through the fixing base and the spring fixing base, the two ends of the fixing rod are connected with idler wheels, the two ends of the spring abut against the fixing base and the spring fixing base respectively, and the spring fixing base moves in the vertical direction. By means of the structure, when the idler wheel encounters an obstacle or bears downward impact force, the impact force is transmitted to the fixing rod through the idler wheel, the fixing rod drives the spring fixing base to move upwards, the spring is compressed, the spring is elastically compressed and deformed, impact energy is absorbed, and the inner damping effect is achieved; and meanwhile, the impact force is greatly buffered and weakened, the shock-proof effect is good, and the shock-proof belt conveyor is suitable for protecting equipment and conveying articles in different road conditions. The inner shock absorption luggage wheel is simple in mechanical structure, clear in assembly relation, simple and convenient to manufacture, install and maintain, and beneficial to control of production cost.

Description

Technical Field

[0001] This utility model relates to the field of luggage technology, and more specifically, to an internal shock-absorbing luggage wheel. Background Technology

[0002] As a widely used vehicle in daily travel and logistics transportation, bags and suitcases have multiple wheels at the bottom that come into contact with the ground. When people drag bags and suitcases, the bags vibrate along the ground pattern, which can easily damage both the bag and the items inside. Therefore, whether a bag or suitcase has shock absorption function is a major consideration for people when purchasing bags and suitcases.

[0003] However, existing internal shock-absorbing wheel bags often have complex structural designs, leading to difficulties in installation and maintenance, and increasing production and operating costs. Furthermore, some internal shock-absorbing wheel bags have limited shock absorption performance, making them unsuitable for different road conditions and usage scenarios. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an internally shock-absorbing luggage wheel. This invention features a relatively simple structure, is easy to install, and provides excellent shock absorption for various types of luggage, possessing high practicality and market value.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an internal shock-absorbing luggage wheel, comprising a fixed base, a spring fixing base matching the fixed base, and a luggage body connecting base. The fixed base has a viewing hole, a positioning groove, and a shaft hole. The fixed base also includes a first locking block. A fixing rod extends transversely through the fixed base and the spring fixing base, and rollers are connected to both ends of the fixing rod. A rotating shaft is provided in the shaft hole, and the fixed base is rotatably connected to the luggage body connecting base through the rotating shaft. The spring fixing base includes an integrally formed arc-shaped block and a second locking block. A second positioning protrusion is provided on the arc surface of the arc block. The second locking block includes a spring connecting part and a positioning hole. A spring pressing against the spring connecting part is provided in the viewing hole.

[0006] Preferably, the top surface inside the viewing hole is provided with a downwardly protruding first positioning protrusion, and the two ends of the spring are respectively sleeved on the outer wall of the first positioning protrusion and the outer wall of the spring connecting part.

[0007] Preferably, the visible holes are distributed above the positioning groove along the vertical axis; the spring connecting part is located above the positioning holes.

[0008] Preferably, the shaft hole is provided with a limiting area; the rotating shaft includes an upper shaft body and a lower shaft body, and there is a transition structure between the upper shaft body and the lower shaft body, and the transition structure is inclined towards the axis of the rotating shaft from the upper shaft body to the lower shaft body.

[0009] Preferably, the lower shaft is provided with an annular limiting groove, and the fixed seat is provided with a limiting block through it, the limiting block being engaged in the annular limiting groove.

[0010] Preferably, the top of the first card block is provided with a first card slot.

[0011] Preferably, the bottom of the fixing base has a second slot for accommodating the second locking block.

[0012] Preferably, the fixing rod passes through the wheel axle core of the two rollers and the spring fixing seat. A connecting member is provided between each of the two rollers and the fixing seat. One side of the connecting member is attached to the wheel axle core of the roller, and the other side of the connecting member is engaged with the inner wall of the positioning groove and fits with the positioning hole.

[0013] Preferably, the roller includes a hub support frame, the surface of which is covered with a polyurethane layer.

[0014] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0015] This invention provides an internally shock-absorbing luggage wheel. When the wheel encounters bumps or impacts, the spring undergoes elastic deformation, absorbing and dissipating impact energy, thus providing internal shock absorption. This significantly reduces the vibration and impact force transmitted to the mounting base and luggage, resulting in excellent shock absorption. It is suitable for protecting equipment and transporting goods in various road conditions. Specifically, the mounting base and the spring mounting base are connected by a snap-fit ​​mechanism. The fixing rod passes through both the positioning groove of the mounting base and the positioning hole of the spring mounting base, ensuring a stable structure and preventing accidental loosening of components during vibration. It also provides precise vertical guidance for the movement of the spring mounting base relative to the mounting base, ensuring that the compression or extension of the spring occurs vertically, avoiding lateral deviation or jamming, and improving movement stability and lifespan. A visual hole allows for inspection of the spring to check for over-compression, breakage, corrosion, etc., facilitating preventative maintenance or fault diagnosis without frequent disassembly. Furthermore, the internally shock-absorbing luggage wheel of this invention has a simple mechanical structure and clear assembly relationships, making manufacturing, installation, and maintenance relatively simple and helping to control production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the right-side structure shown;

[0018] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure shown in the AA direction;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of part A in the middle section;

[0020] Figure 5 for Figure 3 A partially enlarged structural diagram of section B;

[0021] Figure 6 This is a schematic diagram of the overall structure of the rotating shaft in this utility model;

[0022] Figure 7 This is a schematic diagram of the overall structure of the fixing base in this utility model;

[0023] Figure 8 for Figure 5 A front view schematic diagram of the structure shown;

[0024] Figure 9 This is a front view of the spring fixing seat in this utility model.

[0025] Figure 10 This is an exploded view of another embodiment of the present invention.

[0026] The components include: 1. Fixed base; 101. Visible hole; 1011. First positioning protrusion; 102. Positioning groove; 103. Shaft hole; 1031. Limiting area; 104. Limiting block; 105. First locking block; 1051. First locking groove; 106. Second locking groove; 2. Spring fixed base; 201. Arc-shaped block; 2011. Second positioning protrusion; 202. Second locking block; 2021. Spring connecting part; 2022. Positioning hole; 3. Spring; 4. Fixed rod; 5. Roller; 501. Hub support frame; 502. Polyurethane layer; 6. Rotating shaft; 601. Upper shaft body; 602. Lower shaft body; 603. Annular limiting groove; 7. Connecting piece; 8. Box connecting base. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] Example 1

[0029] like Figure 1-8As shown, this utility model provides an internal shock-absorbing luggage wheel, including a fixed base 1, a spring fixing base 2 matching the fixed base 1, and a luggage body connecting base 8. The fixed base 1 has a viewing hole 101, a positioning groove 102, and a shaft hole 103. The fixed base 1 also includes a first locking block 105. A fixing rod 4 is transversely passed through the fixed base 1 and the spring fixing base 2, and rollers 5 are connected to both ends of the fixing rod 4. A rotating shaft 6 is provided in the shaft hole 103, and the fixed base 1 is rotatably connected to the luggage body connecting base 8 through the rotating shaft 6. The spring fixing base 2 includes an integrally formed arc-shaped block 201 and a second locking block 202. A second positioning protrusion 2011 is provided on the arc surface of the arc block 201. The second locking block 202 includes a spring connecting part 2021 and a positioning hole 2022. A spring 3 is provided in the viewing hole 101, pressing against the spring connecting part 2021.

[0030] Spring 3 is placed in the visible hole 101 of the fixed seat 1. One end of spring 3 presses against the spring connecting part 2021 of the spring fixed seat 2, so that spring 3 can undergo elastic deformation to buffer vibration when subjected to pressure. The first locking block 105 on the fixed seat 1 is connected to the second positioning protrusion 2011 of the spring fixed seat 2. The second positioning protrusion 2011 protrudes from the spring connecting part 2021. The second locking block 202 is connected to the fixed seat 1. The fixing rod 4 passes through the positioning groove 102 of the fixed seat 1 and the positioning hole 2022 of the spring fixed seat 2 laterally to further fix the fixed seat 1 and the spring fixed seat 2. The roller 5 is connected to both ends of the fixing rod 4. The rotating shaft 6 is set in the shaft hole 103 of the fixed seat 1. The fixed seat 1 and the box connecting seat 8 are rotatably connected by the rotating shaft 6.

[0031] This utility model's internal shock-absorbing luggage wheel, when the wheel encounters bumps or impacts, the spring 3 can undergo elastic deformation, absorbing and dissipating impact energy, thus playing an internal shock-absorbing role. This significantly reduces the vibration and impact force transmitted to the fixed seat 1 and the luggage, protecting the equipment and transported goods. Specifically, the fixed seat 1 and the spring fixed seat 2 are snapped together, and the fixing rod 4 passes through both the positioning groove 102 of the fixed seat 1 and the positioning hole 2022 of the spring fixed seat 2. The structure is stable, preventing components from accidentally loosening during vibration, and also providing precise vertical guidance for the movement of the spring fixed seat 2 relative to the fixed seat 1. This ensures that the compression or extension of the spring occurs in the vertical direction, avoiding lateral deviation or jamming, and improving movement stability and lifespan. The viewing hole 101 allows for direct inspection of whether the spring 3 is over-compressed, broken, or corroded, facilitating preventive maintenance or fault diagnosis without frequent disassembly. Moreover, the internal shock-absorbing luggage wheel of this utility model has a simple mechanical structure and clear assembly relationships, making manufacturing, installation, and maintenance relatively simple, and also helping to control production costs.

[0032] Furthermore, in another embodiment, the viewing hole 101 is distributed above the positioning groove 102 along the vertical axis; the spring connecting part 2021 is located above the positioning hole 2022. The moving direction of the fixing rod is consistent with the elastic deformation direction of the spring 3 in the vertical direction, which can effectively absorb and disperse the impact force, reduce the vibration transmitted to the fixing seat and the connected components, ensure that the inner shock-absorbing box wheel moves smoothly in the vertical direction, and protect the internal structure and components of the inner shock-absorbing box wheel from damage by excessive vibration.

[0033] Furthermore, in another embodiment, the top surface inside the viewing hole 101 is provided with a downwardly protruding first positioning protrusion 1011, and the two ends of the spring 3 are respectively sleeved on the outer side wall of the first positioning protrusion 1011 and the outer side wall of the spring connecting part 2021.

[0034] The first positioning protrusion 1011 and the spring connection part 2021 on the top surface inside the viewing hole 101 provide an installation position for the spring 3, which is convenient to install and accurately positioned. The two ends of the spring 3 are respectively sleeved on the outer walls of the two positioning protrusions. The elasticity of the spring 3 is used to achieve a buffering effect, ensuring that the component has a certain amount of room for movement and buffering capacity during operation, reducing damage caused by rigid collisions and extending service life.

[0035] Furthermore, in another embodiment, the fixing base 1 has a shaft hole 103, the shaft hole 103 includes a limiting area 1031, and the diameter of the shaft hole 103 from the opening of the shaft hole 103 to the limiting area 1031 is larger than the diameter from the limiting area 1031 to the bottom of the shaft hole 103; a rotating shaft 6 is rotatably connected inside the fixing base 1, the rotating shaft 6 is inserted into the shaft hole 103, the rotating shaft 6 includes an upper shaft body 601 and a lower shaft body 602, the upper shaft body 601 and the lower shaft body 602 are integrally connected by a transition structure; the transition structure is a conical transition, that is, the diameter of the lower shaft body 602 is smaller than the diameter of the upper shaft body 601; the diameter of the upper shaft body 601 is larger than the diameter from the limiting area 1031 to the bottom of the shaft hole 103.

[0036] When the rotating shaft 6 is inserted into the shaft hole 103, the roller 5 is vibrated and the fixed seat 1 moves upward. Since the diameter of the upper shaft body 601 is larger than the diameter of the hole from the limiting area 1031 to the bottom of the shaft hole 103 and the diameter of the upper shaft body 601 is smaller than the diameter of the hole from the opening of the shaft hole 103 to the limiting area 1031, the transition structure of the rotating shaft 6 is restricted by the limiting area 1031, which restricts the axial displacement of the rotating shaft 6 during operation and makes the connection between the rotating shaft 6 and the fixed seat 1 more stable.

[0037] Furthermore, in another embodiment, the lower shaft 602 is provided with an annular limiting groove 603, and the fixing seat 1 is provided with a limiting block 104 through it, the limiting block 104 being engaged with the annular limiting groove 603. The limiting block 104 is detachable.

[0038] The annular limiting groove 603 on the lower shaft 602 cooperates with the limiting block 104 that passes through the fixed seat 1. The limiting block 104 is engaged in the annular limiting groove 603 to prevent the rotating shaft 6 from coming out of the shaft hole 103 during rotation. The limiting block 104 is detachable. The detachable method includes detachable connection by fasteners, threaded connection or snap ring connection, etc., which facilitates the installation, disassembly and maintenance of the rotating shaft 6. When the rotating shaft 6 needs to be inspected or replaced, the limiting block 104 can be easily removed, which improves maintenance efficiency and reduces maintenance costs.

[0039] Furthermore, in another embodiment, the first card block 105 is provided with a first card slot 1051 at its top; the second positioning protrusion 2011 engages with the first card slot 1051.

[0040] The first slot 1051 on the top of the first locking block 105 of the fixing seat 1 engages with the second positioning protrusion 2011 of the spring fixing seat 2, which further improves the stability of the connection between the fixing seat 1 and the spring fixing seat 2. At the same time, it makes the assembly of the fixing seat 1 and the spring fixing seat 2 simpler and faster, enhances the overall structural strength, and reduces the probability of failure caused by loose connection.

[0041] Furthermore, in another embodiment, the bottom of the fixing base 1 is provided with a second slot 106 for accommodating the second card block 202; the side of the second card block 202 is a quarter-circle arc surface, and the bottom of the second slot 106 is arc-shaped.

[0042] The first locking block 105 on the fixed base 1 engages with the second positioning protrusion 2011 of the spring fixed base 2, and the contact point between the first locking block 105 and the second positioning protrusion 2011 serves as a support point to engage the second locking block 202 into the second locking groove 106. When the bottom of the second locking block 202 and the second locking groove 106 are arc-shaped, the arc surface of the bottom of the second locking block 202 moves along the arc bottom of the second locking groove 106 until it is completely locked, making the connection between the fixed base 1 and the spring fixed base 2 more stable, ensuring the stability of the overall structure, and making the assembly of the fixed base 1 and the spring fixed base 2 simpler and faster.

[0043] Furthermore, in another embodiment, the fixing rod 4 passes through the axle core of the two rollers 5 and the spring fixing seat 2. A connecting member 7 is provided between the two rollers 5 and the fixing seat 1. One side of the connecting member 7 is attached to the axle core of the roller 5, and the other side of the connecting member 7 is engaged with the inner wall of the positioning groove 102 and is attached to the positioning hole 2022.

[0044] The connector 7 is sleeved on the fixed rod 4, with one side attached to the wheel axle core of the roller 5, and it is engaged with the inner wall of the positioning groove 102 and fits into the positioning hole 2022, so that the fixed seat 1, the spring fixed seat 2 and the fixed rod 4 are more tightly connected, thereby ensuring that the spring can fully play its shock absorption role.

[0045] Furthermore, in another embodiment, the roller 5 includes a hub support frame 501, the surface of which is covered with a polyurethane layer 502. Casting the polyurethane layer onto the surface of the hub support frame 501 improves the roller's wear resistance and tear resistance.

[0046] Working principle: When there is no load or when rolling smoothly, the spring 3 is in a natural or pre-compressed state. One end of the spring 3 abuts against the visible hole 101 area on the fixed seat 1, and the other end abuts against the spring connection part 2021 of the spring fixed seat 2. The fixing rod 4 passes through the positioning groove 102 of the fixed seat 1 and the positioning hole 2022 of the spring fixed seat 2, connecting the two and allowing the spring fixed seat 2 to have a certain amount of movement in the vertical direction. The roller 5 is installed on the outermost side through the fixing rod 4.

[0047] When roller 5 encounters an obstacle (such as a bump, ditch, or uneven road surface) or experiences a downward impact, the impact force is transmitted to the fixed rod 4 through roller 5. The fixed rod 4 drives the spring fixing seat 2 to move upward, compressing the spring 3. The spring 3 undergoes elastic compression deformation, absorbing the impact energy and converting some of the kinetic energy into elastic potential energy for storage. At the same time, the impact force is significantly buffered and weakened. During this process, the fixed rod 4 slides upward within the positioning groove 102. The positioning groove 102 and the positioning hole 2022 work together to strictly limit the movement trajectory of the spring fixing seat 2 to the vertical direction, preventing it from swaying or rotating, and ensuring that the spring only undergoes axial compression.

[0048] When the roller passes over the obstacle or the road surface returns to flat, the impact force weakens or disappears, the compressed spring 3 releases the stored elastic potential energy, pushes the spring fixing seat 2 to move downward and reset, the spring fixing seat 2 drives the fixing rod 4 to move downward, the fixing rod 4 slides downward in the positioning groove 102, and the roller 5 also resets downward and resumes normal contact with the ground.

[0049] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0050] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of internal shock-absorbing luggage wheel, comprising a fixed base (1), a spring fixed base (2) matching the fixed base (1), and a luggage body connecting base (8), characterized in that: The fixing base (1) is provided with a viewing hole (101), a positioning groove (102) and a shaft hole (103), and the fixing base (1) also includes a first locking block (105); A fixing rod (4) is horizontally passed through the fixing seat (1) and the spring fixing seat (2), and rollers (5) are connected to both ends of the fixing rod (4); a rotating shaft (6) is provided in the shaft hole (103), and the fixing seat (1) is rotatably connected to the box connecting seat (8) through the rotating shaft (6). The spring fixing seat (2) includes an integrally formed arc-shaped block (201) and a second locking block (202). The arc surface of the arc-shaped block (201) is provided with a second positioning protrusion (2011). The second locking block (202) includes a spring connecting part (2021) and a positioning hole (2022). The visible hole (101) contains a spring (3) that presses against the spring connection part (2021).

2. The internal shock-absorbing box wheel according to claim 1, characterized in that: The top surface inside the viewing hole (101) is provided with a downward protruding first positioning protrusion (1011), and the two ends of the spring (3) are respectively sleeved on the outer wall of the first positioning protrusion (1011) and the outer wall of the spring connecting part (2021).

3. The internal shock-absorbing box wheel according to claim 1, characterized in that: The visible hole (101) is distributed above the positioning groove (102) along the vertical axis; the spring connecting part (2021) is located above the positioning hole (2022).

4. The internal shock-absorbing box wheel according to claim 1, characterized in that: The shaft hole (103) is provided with a limiting area (1031); the rotating shaft (6) includes an upper shaft body (601) and a lower shaft body (602), and the upper shaft body (601) and the lower shaft body (602) are integrally connected by a transition structure; the transition structure is a conical transition.

5. The internal shock-absorbing box wheel according to claim 4, characterized in that: The lower shaft (602) is provided with an annular limiting groove (603), and the fixed seat (1) is provided with a limiting block (104) through it, and the limiting block (104) is inserted into the annular limiting groove (603).

6. The internal shock-absorbing box wheel according to claim 1, characterized in that: The first card block (105) has a first card slot (1051) on its top.

7. The internal shock-absorbing box wheel according to claim 1, characterized in that: The bottom of the fixed base (1) is provided with a second slot (106) to accommodate the second card block (202).

8. The internal shock-absorbing box wheel according to claim 1, characterized in that: The fixing rod (4) passes through the wheel axle core of the two rollers (5) and the spring fixing seat (2). A connector (7) is provided between the two rollers (5) and the fixing seat (1). One side of the connector (7) is attached to the wheel axle core of the roller (5), and the other side of the connector (7) is engaged with the inner wall of the positioning groove (102) and is attached to the positioning hole (2022).

9. The internal shock-absorbing wheel for a luggage compartment according to claim 1, characterized in that: The roller (5) includes a hub support frame (501), the surface of which is covered with a polyurethane layer (502).

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