Luggage trundle and idler wheel thereof
By introducing manually operable snap-fit components that engage with radial grooves on the luggage casters, the problems of debris entanglement and grease addition on the rollers are solved, achieving convenient tool-free disassembly and maintenance.
Patent Information
- Application Number
- CN202520664240.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-09
AI Technical Summary
After a period of use, existing bag casters tend to become entangled in debris and lack lubrication, making it difficult to clean and add grease without tools.
Design a luggage caster that uses a manually operable snap-fit component that engages with the radial groove of the wheel axle to enable quick assembly and disassembly of the roller from the wheel frame. The snap-fit component overcomes the elastic force of the elastic element, removes axial restriction, and facilitates cleaning and grease application.
It enables quick assembly and disassembly of rollers without the need for tools, simplifying the maintenance process and improving the efficiency of roller cleaning and lubrication.
Smart Images
Figure CN223850357U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a luggage accessory, in particular to a luggage caster. BACKGROUND
[0002] The luggage caster is a kind of accessory for supporting the movement of luggage. After the luggage caster is used for a period of time, the user often encounters the problem that the caster does not run smoothly, such as the winding of sundries on the axle (the caster is easy to wind the sundries on the ground when moving on the ground) or the lack of lubricating grease. The existing luggage caster usually comprises a wheel frame and a caster, the caster is installed on the wheel frame through an axle, the axle is usually fixedly installed on the wheel frame by means of a riveting shaft, the riveting shaft usually has a head portion, the other end of the riveting shaft forms an axle end device, so as to limit the axle on the wheel frame, and the axle end device is usually a riveting end portion of the axle. Under the above-mentioned caster structure, the caster is limited on the wheel frame, and it is difficult to clean the winding of sundries on the axle and add lubricating grease without the aid of corresponding tools. In the actual use process, the winding of sundries usually occurs during the use of the travel case, such as during the journey, and the probability of the user obtaining a handy tool is small. SUMMARY
[0003] The utility model discloses the purpose of overcoming the defects existing in the prior art, and provides a kind of luggage caster, which can be disassembled and assembled without the aid of tools, and has the advantages of convenient maintenance of caster.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] A luggage caster comprises a wheel frame, a caster and an axle, the caster is installed on the wheel frame through the axle, the caster comprises a caster main body, the caster main body is provided with an axle hole for inserting the axle, one end of the axle is provided with a limiting head portion, the other end of the axle is provided with an axle end device, characterized in that: the axle end device is configured to be detachable from the axle to release the axial limitation of the axle, a radial clamping groove is arranged at the end portion of the axle, the axle end device comprises a clamping member, the clamping member has a clamping end that is buckled and unbuckled with the radial clamping groove, and an operating end that is contacted by hand to operate the clamping member, the clamping member is correspondingly matched with an elastic element, and the elastic element drives the clamping end of the clamping member to be clamped into the radial clamping groove.
[0006] Preferably, the wheel frame is provided with two rollers, which are respectively arranged on the two lateral sides of the wheel frame, the clamping member is limited on the roller and can reciprocate between the clamping position and the unlocking position, at the clamping position, the clamping end can be clamped into the radial clamping groove, at the unlocking position, the clamping end exits the radial clamping groove, the radial clamping groove is an annular groove extending along the circumference of the wheel shaft, and the clamping end on the clamping member can rotate relative to the wheel shaft through the annular groove; or the wheel frame is provided with one roller, the wheel frame has two installation arms arranged at intervals, and the roller is located between the two installation arms, the clamping member is limited on the installation arm and can reciprocate between the clamping position and the unlocking position, and the radial clamping groove is an annular groove extending along the circumference of the wheel shaft, and the clamping end on the slider can rotate relative to the wheel shaft through the annular groove.
[0007] Preferably, the roller further comprises a wheel cover, an assembly groove cavity is concavely arranged on the outer end surface of the roller main body in the axial direction, the clamping member is a slider which is slidingly fitted in the assembly groove cavity, the slider and the elastic element are installed in the assembly groove cavity, the wheel cover covers the outer end surface of the roller main body in the axial direction and covers the mouth of the assembly groove cavity, a window hole is arranged on the wheel cover, and the operating end on the slider is exposed through the window hole.
[0008] Preferably, the slider is linearly slidingly fitted on the roller main body in the radial direction of the roller, a pair of elastic clamping legs are arranged on the slider in opposition, a clamping hole is arranged at the bottom of the assembly groove cavity, the clamping hole is located close to the outer circumferential side of the roller main body, the elastic clamping legs of the slider are clamped in the clamping hole, and the elastic clamping legs can slide in the clamping hole along with the slider.
[0009] The luggage roller of the utility model can be separated from the wheel frame without the aid of tools, and the roller can be cleaned and lubricating grease can be added instantly and conveniently, so that the roller is maintained conveniently.
[0010] The utility model also provides a roller of a luggage roller which can be disassembled and assembled with a wheel shaft without the aid of tools, comprising a roller main body, and a wheel shaft hole for inserting and assembling the wheel shaft is arranged on the roller main body, characterized in that: an axle end device which can be separated from the wheel shaft to release the axial limitation on the roller is arranged on the roller main body, the axle end device comprises a clamping member, the clamping member has a clamping end for clamping and fixing on the wheel shaft and an operating end for contacting hands to operate the clamping member, the clamping member has a clamping position corresponding to the position of the wheel shaft hole and an unlocking position in which the clamping end exits the position of the wheel shaft hole, and the clamping member is correspondingly matched with an elastic element, and the elastic element drives the clamping end of the clamping member to correspond to the clamping position.
[0011] The roller can be quickly disassembled and assembled with the wheel shaft, and the roller and the wheel shaft can be disassembled without using tools in the application scene, so that the maintenance operation such as cleaning and adding lubricating grease is facilitated.
[0012] The utility model will be further described below in combination with the drawings. DRAWINGS
[0013] Figure 1 It is the side view of the luggage trolley of the utility model embodiment one;
[0014] Figure 2 It is Figure 1 It is the sectional view along A-A line;
[0015] Figure 3 It is the one side roller cover disassembly state diagram of the luggage trolley of the utility model embodiment one;
[0016] Figure 4 It is the explosion view of the luggage trolley of the utility model;
[0017] Figure 5 It is the roller structure schematic diagram of the utility model embodiment one with axle end device;
[0018] Figure 6 It is the structure schematic diagram of the luggage trolley of the utility model embodiment two;
[0019] Figure 7 It is the cover component open state diagram of the luggage trolley of the utility model embodiment two;
[0020] Figure 8 It is the explosion view of the luggage trolley of the utility model embodiment two;
[0021] Wheel carrier 1, mounting arm 10, axle mounting hole 11, wheel shaft 2, limit head 20, radial clamping groove 21, roller 3, roller main body 31, wheel shaft hole 311, assembly groove cavity 312, clamping hole 313, wheel cover 32, window hole 321, clamping member 4, clamping end 41, operation end 42, elastic clamping leg 43, elastic element 5. DETAILED DESCRIPTION EMBODIMENT
[0022] Referring to the drawings Figures 1-5The utility model discloses a kind of luggage trundle, including wheel frame 1, wheel frame 1 is equipped with shaft mounting hole 11, wheel shaft 2 passes through shaft mounting hole 11 and is equipped with a roller 3 in wheel shaft 2 two ends respectively, roller 3 includes roller main body 31, wheel shaft hole 311 for wheel shaft 2 insertion is equipped on roller main body 31, wheel shaft 2 one end has limit head 20, wheel shaft other end is equipped with shaft end device, the shaft end device is configured as can be separated from wheel shaft 2 to remove the axial restriction to wheel shaft 2, more specifically, radial clamping groove 21 is equipped at wheel shaft 2 end, shaft end device includes clamping member 4, clamping member 4 has the clamping end 41 of the buckle, undetachably matched with radial clamping groove 21, and the operating end 42 for hand contact to realize the operation clamping member 4, clamping member 4 is correspondingly matched with elastic element 5, this elastic element 5 drives the clamping end 41 of clamping member 4 and enters radial clamping groove 21.Casual user can manually operate operating end 42, operate clamping member 4, clamping member 4 overcomes the elastic force of elastic element 5, and reach the radial clamping groove 21 of clamping end 41 and exit wheel shaft 2, remove the axial restriction to wheel shaft 2, wheel shaft 2 can be axially pulled off from corresponding roller 3 and wheel frame 1, so that user can not with the aid of tool, i.e. two rollers can be removed from wheel frame, realize immediate, convenient cleaning and grease adding operation, the maintenance of convenient roller;When installing, after roller insertion wheel shaft, clamping end is entered radial clamping groove of wheel shaft, realizes that wheel shaft end portion realizes axial restriction to wheel shaft through shaft end device.
[0023] As an embodiment of the utility model, the clamping member 4 is reciprocated between the clamping position and the unlocking position on the roller 3, when in the clamping position, the clamping end head can be clamped into the radial clamping groove 21, when in the unlocking position, the clamping end head exits the radial clamping groove 21, the radial clamping groove 21 is an annular groove extending along the circumference of the wheel shaft 2, and the clamping end 41 on the sliding block can rotate relative to the wheel shaft 2 through the annular groove 21. That is, when the roller 3 and the wheel shaft 2 rotate relative to each other, the clamping end 41 slides in the annular groove 21 but remains in the annular groove 21; the clamping member is installed and arranged conveniently, and the movement of the roller is more stable and reliable. Of course, the clamping member can also be designed to be fixed to the wheel shaft after being clamped to the wheel shaft, that is, the shaft end device is designed as a part that can rotate relative to the roller, specifically, the shaft end device includes a housing, the housing has a through hole in the center, the clamping member is a sliding block arranged on the housing, one end of the sliding block has an operating end that can be pinched, and the clamping member has a clamping end corresponding to the through hole, so that when the one end of the sliding block is pinched, the clamping end can be withdrawn from the radial clamping groove. This results in the defects of complex structure and inconvenient operation.
[0024] The clamping member 4 is a sliding block which is slidingly fitted on the roller body 3. Preferably, the sliding block is linearly fitted on the roller body 31 along the radial direction of the roller 3. Of course, the sliding block can also be designed to swing eccentrically around a fulcrum and the clamping end can be away from or close to the wheel shaft, or the sliding block can be guided to slide eccentrically in an arc-shaped slot. However, the linear sliding has the advantages of simple structure and stable and reliable operation.
[0025] In the embodiment, the roller 3 further comprises a wheel cover 32. An assembly groove 312 is concavely arranged on the axial outer end surface of the roller body 31, and the sliding block and the elastic element 5 are installed in the assembly groove 312. Figure 2 As shown clearly, the wheel cover 32 covers the axial outer end surface of the roller body 31 and covers the opening of the assembly groove 312. The wheel cover 32 is fixed to the roller body 31 by buckling. A window hole 321 is arranged on the wheel cover 32, and the operation end 42 of the sliding block is exposed through the window hole 321. The wheel cover not only has the traditional decorative effect, but more importantly, the wheel cover covers the assembly groove, thereby limiting and protecting the sliding block and the elastic element to a certain extent. The operation end can be pushed at the position of the window hole, so that the clamping member can be slid, which is convenient to operate.
[0026] In order to further facilitate the installation of the clamping member, a pair of elastic clamping legs 43 are arranged on the sliding block in opposite directions. A clamping hole 313 is arranged at the bottom of the assembly groove 312, and the clamping hole 313 is located close to the outer circumferential side of the roller body 31. The elastic clamping legs 43 of the sliding block are clamped in the clamping hole 313, and the elastic clamping legs 43 can slide in the clamping hole 313 along with the sliding block. In this way, when the wheel cover is not installed, the clamping member 4 can also be reliably limited in the assembly groove 312, so that the assembly of the clamping member 4 and the elastic element 5 is facilitated, and the sliding of the clamping member 4 is reliable. The sliding block is linearly fitted on the roller body 31 along the radial direction of the roller 3, so that the clamping member can be assembled by the clamping legs. On the one hand, the linear sliding enables the clamping member to slide along with the clamping legs after the clamping member is installed by the clamping legs. On the other hand, the clamping hole is designed to be located close to the outer circumferential side of the roller body, so that the clamping hole can be avoided from being located at the center of the roller body. The elastic element 5 is preferably a spiral compression spring. Of course, the elastic element can also be a tension spring or a torsion spring in the prior art.
[0027] The utility model discloses a luggage trundle, compared with the axle end device of traditional wheel axle two ends to the wheel limiting adopts the end head design of direct wheel axle end portion forming, or relies on bolt nut thread screwing (thread cooperation although can disassemble, but there is the problem of needing to lend a hand tool, and long -time use exists rust cannot disassemble, still cannot solve the problem of wheel instant maintenance) compared with the design, adopts the radial clamping groove of wheel axle's end portion, and the axle end device realizes wheel axle and wheel axial anti -disengagement through the clamping member of manual operation and wheel axle buckle, and the clamping end of manual operation clamping member is separated from radial clamping groove, more specifically, such as dialing slider, and the clamping end is taken out of radial clamping groove, and then wheel axle and wheel can be axially separated, and the split is completed, and the corresponding maintenance operation is carried out, and the assembly is also relatively simple and convenient.
[0028] As Figures 2-5 The utility model discloses a trundle 3 applied to the luggage trundle of specific embodiment one, that is, the axle end device that wheel axle 2 can be separated with wheel 3 to cancel the axial limitation to wheel axle 2 is equipped on the wheel main part 31, and the axle end device includes clamping member 4, and clamping member 4 has the clamping end 41 for clamping fixed on wheel axle 2, and the operating end 42 for hand contact to realize the operation of clamping member 4, and clamping member 4 has the clamping position (that is, the clamping of wheel axle is implemented) of the clamping end 41 corresponding to wheel axle hole 311 position, and the unlocking position of the clamping end 41 exit wheel axle hole 311 position, and clamping member 4 corresponds to the elastic element 5 of cooperation, and the elastic element 5 drives the clamping end 41 of clamping member 4 to correspond in the clamping position.For the slider of being limited to slide on the wheel of clamping member 4, has more simple structure, and action is stable and reliable.Certainly for clamping member 4 can also be the swing frame of being able to turn around a fulcrum, and the swing frame is hinged on the wheel main part at one end, and the swing frame has a handle as operating end, and the swing frame has an elastically movable clamping end 41.
[0029] Further preferred design, refer to the Figures 1-5 As above, the wheel design of the axle end device on the luggage trundle is not repeated. Specific embodiment
[0030] As Figures 6-8The utility model discloses a luggage trundle, which is designed as a single roller, and the wheel carrier 1 has two installation arms 10 arranged at intervals. The roller 3 is installed between the two installation arms 10 via an axle 2. The axle 2 has a limiting head 20 at one end, and the other end of the axle 2 is provided with an axle end device. The axle end device is configured to be disengaged from the axle 2 to release the axial limitation of the axle 2. More specifically, a radial clamping groove 21 is arranged at the end of the axle 2. The axle end device includes a clamping member 4, which has a clamping end 41 that is buckled and unbuckled with the radial clamping groove 21, and an operating end 42 that is contacted by hand to operate the clamping member 4. The clamping member 4 is correspondingly matched with an elastic element 5, which drives the clamping end 41 of the clamping member 4 to be clamped into the radial clamping groove 21. The user can manually operate the operating end 42 to operate the clamping member 4. The clamping member 4 overcomes the elastic force of the elastic element 5, and the clamping end 41 is disengaged from the radial clamping groove 21 of the axle 2, releasing the axial limitation of the axle 2. The axle 2 can be axially pulled out from the corresponding roller 3 and the wheel carrier 1. In this way, the user can remove the two rollers from the wheel carrier without the aid of tools, realizing instant and convenient cleaning and lubricating grease adding operation, and facilitating the maintenance of the roller. When installing, after the roller is inserted into the axle, the clamping end is clamped into the radial clamping groove of the axle, realizing the axial limitation of the roller by the axle end device at the end of the axle.
[0031] Further, the clamping member 4 is limited on the installation arm 10 and can reciprocate between a clamping position and an unlocking position. In the clamping position, the clamping end head 41 can be clamped into the radial clamping groove 21. In the unlocking position, the clamping end head 41 exits the radial clamping groove 21. The radial clamping groove 21 is an annular groove extending along the circumference of the axle 2. The clamping end 41 on the sliding block can rotate relative to the axle 2 via the annular groove. Further, the clamping member 41 is a sliding block sliding along the extension direction of the installation arm 10.
[0032] As Figure 7 and Figure 8 It is clear that the assembly groove cavity 312 is recessed on the outer side of the installation arm 10. The opening cover of the assembly groove cavity 312 is provided with a cover member 100, which is buckled and fixed to the installation arm 10. After the sliding block and the elastic element 5 are installed in the assembly groove cavity 312, they are shielded in the assembly groove cavity 312 via the cover member 100. The window hole 321 is arranged on the cover member 100, and the operating end 42 on the sliding block is exposed via the window hole. The cover member realizes the covering of the assembly groove cavity, which limits and protects the sliding block and the elastic element to a certain extent. The operating end can be operated at the window hole position to slide the clamping member, which has the advantage of convenient operation.
[0033] A pair of elastic clamping legs 43 are arranged on the slider, and a clamping hole 313 is arranged at the bottom of the assembling groove 312, the clamping hole 313 is located close to the outer circumferential side of the roller body 31, the elastic clamping legs 43 of the slider are clamped in the clamping hole 313, and the elastic clamping legs 43 can slide in the clamping hole 313 following the slider. In this way, when the cover part is not installed, the clamping member 4 can also be reliably limited in the assembling groove 312, so that the assembly of the clamping member 4 and the elastic element 5 is facilitated, and the sliding of the clamping member 4 is reliable. The elastic element 5 is preferably a spiral compression spring. Of course, in the prior art, the elastic element 5 can also be a tension spring, a torsion spring, etc.
Claims
1. A luggage caster comprising a wheel frame, a rolling wheel and a wheel shaft, the rolling wheel being mounted on the wheel frame via the wheel shaft, the rolling wheel comprising a rolling wheel body, the rolling wheel body being provided with a wheel shaft hole for inserting the wheel shaft, one end of the wheel shaft being provided with a limiting head, and the other end of the wheel shaft being provided with a shaft end device, characterized in that: The axle end device is configured to be disengaged from the wheel axle to release the axial restriction of the wheel axle, a radial clamping groove is arranged at the end of the wheel axle, the axle end device comprises a clamping member, the clamping member has a clamping end which is buckled and disengaged with the radial clamping groove, and an operating end which is contacted by hand to operate the clamping member, and the clamping member is correspondingly matched with an elastic element which drives the clamping end of the clamping member to be clamped into the radial clamping groove.
2. The luggage caster wheel of claim 1, wherein: Two rollers are arranged on the wheel frame, the two rollers are respectively located on the two lateral sides of the wheel frame, the clamping member is limited on the roller and reciprocally moves between the clamping position and the unlocking position, at the clamping position, the clamping end can be clamped into the radial clamping groove, at the unlocking position, the clamping end exits the radial clamping groove, the radial clamping groove is an annular groove which extends along the circumference of the wheel axle, and the clamping end on the clamping member can rotate relative to the wheel axle through the annular groove.
3. The luggage caster wheel of claim 2, wherein: The roller further comprises a wheel cover, an assembly groove cavity is concavely arranged on the outer end surface of the roller main body in the axial direction, the clamping member is a sliding block which is slidingly matched in the assembly groove cavity, the sliding block and the elastic element are installed in the assembly groove cavity, the wheel cover covers the outer end surface of the roller main body in the axial direction and covers the mouth of the assembly groove cavity, a window hole is arranged on the wheel cover, and the operating end on the sliding block is exposed through the window hole.
4. The luggage caster wheel of claim 3, wherein: The sliding block is linearly slidingly matched on the roller main body in the radial direction of the roller, a pair of elastic clamping legs which are oppositely arranged are arranged on the sliding block, a clamping hole is arranged at the bottom of the assembly groove cavity, the clamping hole is located close to the outer circumferential side of the roller main body, the elastic clamping legs of the sliding block are clamped in the clamping hole, and the elastic clamping legs can slide in the clamping hole following the sliding block.
5. The luggage caster wheel of claim 1, wherein: One roller is arranged on the wheel frame, the wheel frame has two installation arms which are spaced apart, and the roller is located between the two installation arms, the clamping member is limited on the installation arm and reciprocally moves between the clamping position and the unlocking position, at the clamping position, the clamping end can be clamped into the radial clamping groove, at the unlocking position, the clamping end exits the radial clamping groove, the radial clamping groove is an annular groove which extends along the circumference of the wheel axle, and the clamping end on the sliding block can rotate relative to the wheel axle through the annular groove.
6. The luggage caster wheel of claim 5, wherein: An assembly groove cavity is concavely arranged on the outer side surface of the installation arm, a cover member is arranged on the mouth cover of the assembly groove cavity, the clamping member is a sliding block which is slidingly matched in the assembly groove cavity, the clamping member slides in the extension direction of the installation arm, after the sliding block and the elastic element are installed in the assembly groove cavity, the sliding block is shielded in the assembly groove cavity through the cover member, and a window hole is arranged on the cover member for exposing the operating end on the sliding block.
7. A rolling wheel of a luggage caster, comprising a rolling wheel body, a wheel shaft hole for inserting a wheel shaft, characterized in that: The roller main body is provided with an axle end device which is disengaged from the wheel axle to release the axial restriction of the wheel axle, the axle end device comprises a clamping member, the clamping member has a clamping end which is used for clamping and fixing on the wheel axle, and an operating end which is contacted by hand to operate the clamping member, the clamping member has a clamping position in which the clamping end corresponds to the hole position of the wheel axle, and an unlocking position in which the clamping end exits the hole position of the wheel axle, and the clamping member is correspondingly matched with an elastic element which drives the clamping end of the clamping member to correspond to the clamping position.
8. The caster wheel of claim 7, wherein: The clamping member is a sliding block which is limited on the roller and slides.
9. The caster wheel of claim 8, wherein: The roller further comprises a wheel cover, an assembly groove cavity is concavely arranged on the outer end surface of the roller main body, the sliding block and the elastic element are installed in the assembly groove cavity, the wheel cover covers the outer end surface of the roller main body and covers the mouth of the assembly groove cavity, a window hole is arranged on the wheel cover, and the operation end on the sliding block is exposed through the window hole.
10. The caster wheel of claim 9, wherein: The sliding block is linearly and slidably arranged on the roller main body along the radial direction of the roller, a pair of oppositely arranged elastic clamping feet are arranged on the sliding block, a clamping hole is arranged at the bottom of the assembly groove cavity, the clamping hole is located close to the outer circumferential side of the roller main body, and the elastic clamping feet of the sliding block are clamped in the clamping hole and can slide in the clamping hole along with the sliding block.