Detachable trundle and support trundle set with same

Abstract

The invention discloses a detachable trundle and a support trundle set with the detachable trundle, the detachable trundle comprises a mounting rack, the bottom of the mounting rack is provided with a roller, the top of the mounting rack is provided with a first rotating shaft, and the first rotating shaft can rotate relative to the mounting rack; one end of each connecting piece is movably arranged on the first rotating shaft in a sleeving mode so that the at least two connecting pieces can rotate relative to the first rotating shaft, and the other end of each connecting piece is provided with a connecting part used for being connected with a trundle support; and the buckling mechanism is used for fixing the bracket and is arranged at the top of the first rotating shaft. According to the trundle set, the at least two connecting pieces are arranged, and the at least two trundle supports are assembled through the connecting pieces and the trundle supports, so that the trundle set of various structures is formed, the use requirements in various environments are met, and practicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of caster equipment, and in particular discloses a detachable caster and a bracket caster assembly having the caster. Background Art

[0002] With the improvement of production technology, people use more and more caster sets in production and life to realize convenient, fast and stable transportation of objects. The caster set is a supporting mechanism composed of multiple universal wheels and a bracket, and a universal wheel is arranged at the bottom, so that it can be easily moved. For example, a tripod for placing photographic and video equipment adopts a triangular bracket structure, and a universal wheel is arranged at the bottom of each corner. Pushing the tripod can drive the photographic and video equipment to move smoothly in any direction.

[0003] However, most of the existing caster sets adopt a fixed structure mode, such as a fixed structure tripod, or a fixed structure quadripod, etc., so that users need to separately prepare caster sets suitable for different application scenarios, such as a two-wheel caster set suitable for a lightweight cart, a three-wheel caster set suitable for photographic equipment, and a four-wheel caster set suitable for a heavyweight cart. As a result, the caster set of this structure has a narrow application range, is difficult to adapt to various complex working environments, and has poor practicality. Summary of the invention

[0004] The present application provides a detachable caster and a bracket caster assembly having the caster, aiming to solve the problems of the existing caster assembly having a fixed structure, low environmental adaptability and poor practicality.

[0005] In order to solve the above problems, the present application provides a detachable caster, which includes: a mounting frame, a roller is provided at the bottom of the mounting frame, a first rotating shaft is provided at the top of the mounting frame, and the first rotating shaft can rotate relative to the mounting frame; at least two connecting members, one end of the connecting member is movably mounted on the first rotating shaft so that the at least two connecting members can rotate relative to the first rotating shaft, and the other end of the connecting member is provided with a connecting portion for connecting the caster bracket; a snap mechanism for fixing the bracket, and the snap mechanism is arranged on the top of the first rotating shaft.

[0006] As a further improvement of the present application, at least two connecting members include a first connecting member and a second connecting member, the first connecting member includes a first disc portion, a first connecting rod and a first connecting portion, the second connecting member includes a second disc portion, a third disc portion, a second connecting rod and a second connecting portion, the side wall of the first disc portion is connected to the center of one end of the first connecting rod, the side wall of the second disc portion is connected to the top of one end of the second connecting rod, the side wall of the third disc portion is connected to the bottom of one end of the second connecting rod, and the second disc portion and the third disc portion are arranged opposite to each other, so that a accommodating area is formed between the second disc portion and the third disc portion, the first disc portion is accommodated in the accommodating area, and the first disc portion, the second disc portion, and the third disc portion are all provided with through holes at the centers of the first disc portion, the second disc portion, and the third disc portion, and the first rotating shaft passes through the through hole so that the first connecting member and the second connecting member can rotate relative to the first rotating shaft.

[0007] As a further improvement of the present application, the top surface and the bottom surface of the first disc portion are both provided with at least one annular groove.

[0008] As a further improvement of the present application, a locking button for locking the caster bracket is provided at the first connection part and the second connection part, and the locking button includes at least one locking nail, a spring and a spring mounting tube. At least one locking hole is provided at the first connection part and the second connection part, and the locking nail is accommodated in the locking hole. The spring mounting tube is arranged in the first connection part and the second connection part and is opposite to the locking hole. The spring is arranged in the spring mounting tube, and one end of the spring abuts against the locking nail, and the locking nail extends from the locking hole under the elastic action of the spring.

[0009] As a further improvement of the present application, gaskets are provided on the top surface of the second disc portion and under the bottom surface of the third disc portion.

[0010] As a further improvement of the present application, the snap mechanism includes a support base, a first snap assembly, and a second snap assembly. One end of the support base is fixedly disposed on the top of the first rotating shaft. The first snap assembly and the second snap assembly are relatively disposed on the support base, and a fixing area for fixing the bracket is formed between the first snap assembly and the second snap assembly.

[0011] As a further improvement of the present application, the first buckle assembly is arranged at one end of the support base, and the second buckle assembly is movably sleeved on the support base.

[0012] As a further improvement of the present application, the first buckle assembly includes a first buckle member that is inclined, the second buckle assembly includes a second buckle member and a first locking member, the second buckle member is arranged on the first locking member, the first locking member is movably mounted on the support base, the second buckle member is inclined on a side opposite to the first buckle member and the inclination direction is opposite to the inclination direction of the first buckle member, so that the tops of the first buckle member and the second buckle member are close to each other, the bottoms of the first buckle member and the second buckle member are far away from each other, and the side opposite to the first buckle member and the second buckle member is arranged in an arc shape.

[0013] As a further improvement of the present application, the first locking member includes an annular sleeve portion, a first locking portion, a second locking portion, a first locking knob, a second rotating shaft and a rotating shaft support rod, the annular sleeve portion is movably sleeved on the support base, the annular sleeve portion is provided with a notch, the first locking portion is provided at the top of the notch and connected to the annular sleeve portion, the second locking portion is provided at the bottom of the notch and connected to the annular sleeve portion, the first locking portion and the second locking portion are arranged opposite to each other and are spaced a certain distance apart, and the first locking portion and the second locking portion are both provided with a first mounting hole A second mounting hole is provided on the side of the second rotating shaft, the top of the rotating shaft support rod passes through the first mounting hole and is fixedly set in the second mounting hole, a first limiting portion is provided at the bottom end of the rotating shaft support rod, the first limiting portion abuts against the bottom surface of the second locking portion, a third mounting hole for installing the second rotating shaft is provided on the first locking knob, the second rotating shaft is rotatably set in the third mounting hole, a first abutting surface and a second abutting surface are provided on the first locking knob, and the distance between the third mounting hole and the first abutting surface is smaller than the distance between the third mounting hole and the second abutting surface.

[0014] As a further improvement of the present application, a second limiting member for limiting the second buckle assembly is provided at the other end of the support base.

[0015] In order to solve the above problems, the present application also provides a bracket caster set, which includes at least one caster bracket and at least two detachable casters of one of the above types, one end of the caster bracket is detachably connected to a connecting piece of a detachable caster, and the other end of the caster bracket is detachably connected to a connecting piece of another detachable caster.

[0016] As a further improvement of the present application, the caster bracket includes a first telescopic tube, a second telescopic tube and a second locking piece, one end of the first telescopic tube is arranged in the second telescopic tube, and the end of the second telescopic tube connected to the first telescopic tube is provided with an opening, the second locking piece includes an annular support portion, a second locking knob and a fixing block, the annular support portion is fixedly arranged on the second telescopic tube and wraps the opening, the annular support portion is provided with a knob mounting portion, one end of the second locking knob is arranged on the knob mounting portion and is rotatably connected to the knob mounting portion, one end of the second locking knob is provided with a fixing protrusion, the fixing protrusion is arranged at the opening, the fixing block is arranged between the fixing protrusion and the first telescopic tube, and a side of the fixing block in contact with the first telescopic tube is provided with a groove matching the edge of the first telescopic tube, and when the second locking knob is rotated to a specified position, the fixing protrusion presses against the fixing block to fix the first telescopic tube.

[0017] The beneficial effects achieved by this application are: The present application provides a detachable caster, which is formed by movably setting at least two rotatable connecting parts on a first rotating shaft, and utilizing the connecting parts to connect different detachable caster brackets, thereby forming a caster group with two casters, three casters, four casters, etc., so as to adapt to the usage requirements in various different environments and have stronger practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the detachable caster of the present application; Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the detachable caster of the present application; Figure 3 This is a schematic structural diagram of a first connecting member of an embodiment of a detachable caster of the present application; Figure 4 This is a schematic structural diagram of a second connecting member of an embodiment of a detachable caster of the present application; Figure 5 This is a schematic diagram of the exploded structure of a locking button of an embodiment of the detachable caster of the present application; Figure 6 This is a schematic diagram of the exploded structure of a buckle mechanism of an embodiment of a detachable caster of the present application; Figure 7 Another exploded structural schematic diagram of a buckle mechanism of an embodiment of a detachable caster of the present application; Figure 8 This is a schematic structural diagram of an embodiment of the bracket caster assembly of the present application; Fig. 9 This is a structural schematic diagram of another embodiment of the bracket caster assembly of the present application; Fig.10 This is a structural diagram of another embodiment of the bracket caster assembly of the present application. Fig.11 This is a schematic diagram of the exploded structure of a caster bracket of an embodiment of the bracket caster assembly of the present application. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 and Figure 2 The schematic diagram of the structure of an embodiment of the detachable caster wheel of the present application is shown. Figure 1 and Figure 2As shown, the detachable caster comprises: a mounting frame 1, at least two connecting members 2 and a buckle mechanism 3. A roller 11 is arranged at the bottom of the mounting frame 1, and a first rotating shaft 12 is arranged at the top of the mounting frame 1, and the first rotating shaft 12 can rotate relative to the mounting frame 1. At least two connecting members 2, one end of at least two connecting members 2 is movably sleeved on the first rotating shaft 12, so that the at least two connecting members 2 can rotate relative to the first rotating shaft 12, and the other end of at least two connecting members 2 is provided with a connecting portion for connecting the caster bracket. The buckle mechanism 3 for fixing the bracket is arranged at the top of the first rotating shaft 12.

[0021] The roller 11 disposed at the bottom of the mounting frame 1 is generally spherical, and may be a relatively regular sphere or close to a sphere, which is not limited in the present application. In addition, at least part of the measuring area of ​​the roller 11 is set as a plane. It can be understood that a spherical or quasi-spherical body is cut off from its opposite side, thereby constructing a circular plane on both sides of the spherical body, thereby obtaining the roller 11 required by the present application.

[0022] Among them, the first rotating shaft 12 is arranged on the mounting frame 1 along the vertical direction, the buckle mechanism 3 is arranged on the top of the first rotating shaft 12, and the first rotating shaft 12 can rotate relative to the mounting frame 1, that is, the buckle mechanism 3 can rotate relative to the mounting member. Conversely, when the buckle mechanism 3 is stationary, the mounting frame 1 and the roller 11 rotate with the axial direction of the first rotating shaft 12 as the center axis.

[0023] Among them, one end of at least two connecting members 2 is mounted on the first rotation, and they also rotate with the rotation axis direction of the first rotating shaft 12 as the central axis, so that the angle between the at least two connecting members 2 can be adjusted. For example, assuming that there are only two connecting members, if a caster set with three casters is to be assembled, the angle between the two connecting members should be 60°, and if a caster set with four casters is to be assembled, the angle between the two connecting members should be 90°.

[0024] The buckle mechanism 3 is disposed at the top end of the first rotating shaft 12 , and is used to fix an external bracket, such as a foot of a tripod, which can be fixed by the buckle mechanism 3 .

[0025] Specifically, when assembling the caster set, a connector of one caster is connected to one end of the caster bracket, and a connector of another caster is connected to the other end of the caster bracket to obtain a two-wheel caster set. By adjusting the number of caster brackets and the connection method between the connector and the caster bracket, caster sets with different numbers of casters can be obtained, thereby meeting the use requirements in various use environments.

[0026] The detachable caster of the present embodiment is formed by movably setting at least two rotatable connecting parts on the first rotating shaft 12, and utilizing the connecting parts to realize the connection of different detachable caster brackets, thereby forming a caster group with two casters, three casters, four casters, etc., so as to adapt to the usage requirements in various environments and have stronger practicality.

[0027] Further, based on the above embodiments, in other embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, at least two connecting members 2 include a first connecting member 21 and a second connecting member 22, the first connecting member 21 includes a first disc portion 211, a first connecting rod 212 and a first connecting portion 213, the second connecting member 22 includes a second disc portion 221, a third disc portion 222, a second connecting rod 223 and a second connecting portion 224, the side wall of the first disc portion 211 is connected to the center of one end of the first connecting rod 212, the side wall of the second disc portion 221 is connected to the top of one end of the second connecting rod 223, the side wall of the third disc portion 222 is connected to the second The bottom of one end of the connecting rod 223 is connected, and the second disc portion 221 and the third disc portion 222 are arranged opposite to each other, so that a receiving area 225 is formed between the second disc portion 221 and the third disc portion 222, and the first disc portion 211 is received in the receiving area 225. The centers of the first disc portion 211, the second disc portion 221 and the third disc portion 222 are all provided with through holes 23 for accommodating the first rotating shaft 12, and the first rotating shaft 12 passes through the through hole 23 so that the first connecting member 21 and the second connecting member 22 can rotate relative to the first rotating shaft 12.

[0028] Specifically, in this embodiment, the number of connecting members is preferably set to two, namely, the first connecting member 21 and the second connecting member 22. The connection between the first connecting member 21 and the second connecting member 22 and the first rotating shaft 12 adopts a disc structure, so as to avoid the situation that the first connecting member 21 and the second connecting member 22 are blocked from each other during the rotation process and cannot reach the corresponding angle. In addition, in this embodiment, the first disc portion 211 of the first connecting member 21 is connected to the center of the end of the first connecting rod 212, the second disc portion 221 and the third disc portion 222 of the second connecting portion 224 are respectively connected to the top and bottom of the end of the second connecting rod 223, and then the first disc portion 211 is arranged in the accommodation area 225 formed between the second disc portion 221 and the third disc portion 222, so that the second disc portion 221 and the third disc portion 222 have a clamping effect, which plays a role in stabilizing the first connecting member 21 and the second connecting member 22, and avoiding the first connecting member 21 and the second connecting member 22 from shaking relative to each other, thereby improving the stability of the assembled caster set. Furthermore, the first disc portion 211, the second disc portion 221 and the third disc portion 222 all adopt a disc structure, and the contact surface between them is larger, and the area bearing force is also larger. When the caster assembly supports heavier objects, the force is more dispersed, thereby being able to support heavier objects.

[0029] Further, in order to facilitate the rotation of the first connecting member 21 or the second connecting member 22, based on the above embodiment, in other embodiments, such as Figure 3 As shown, at least one annular groove 2111 is disposed on the top surface and the bottom surface of the first disc portion 211 .

[0030] Specifically, by providing annular grooves 2111 on the top and bottom surfaces of the first disc portion 211 , lubricant can be better injected between the first disc portion 211 and the second disc portion 221 and the third disc portion 222 , making it easier for the first connecting member 21 to rotate relative to the second connecting member 22 .

[0031] Further, based on the above embodiments, in other embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a locking button 24 for locking the caster bracket is provided at the first connection part 213 and the second connection part 224, and the locking button 24 includes at least one locking nail 241, a spring 242 and a spring mounting tube 243. At least one locking hole 25 is provided at the first connection part 213 and the second connection part 224, and the locking nail 241 is accommodated in the locking hole 25. The spring mounting tube 243 is arranged in the first connection part 213 and the second connection part 224 and is opposite to the locking hole 25. The spring 242 is arranged in the spring mounting tube 243, and one end of the spring 242 abuts against the locking nail 241. The locking nail 241 extends out from the locking hole 25 under the elastic action of the spring 242.

[0032] Among them, the top of the locking pin 241 is a hemispherical structure, and the bottom end is stuck in the locking hole 25 through a limiting structure. The spring 242 is arranged at the bottom of the locking pin 241, so that the locking pin 241 pops out from the locking hole 25 under the action of elasticity, and the spring mounting tube 243 plays the role of fixing the spring 242. Preferably, the number of locking pins 241 in this embodiment is set to two, and the top and bottom surfaces of the first connection and the second connection are provided with mutually opposite locking holes 25, and the two locking pins 241 are respectively arranged at the two ends of the spring 242. It can be understood that the more the number of locking pins 241, the better the locking effect. It should be noted that a bayonet matching the locking pin 241 needs to be provided on the caster bracket.

[0033] Specifically, by setting a locking button 24 on the first connection part 213 and the second connection part 224, a detachable connection between the first connection part 213, the second connection part 224 and the caster bracket is achieved. When the caster bracket needs to be installed, the locking nail 241 is manually pressed and the first connection part 213 or the second connection part 224 is inserted into the caster bracket. After being inserted to the specified position, the locking nail 241 moves to the bayonet of the caster bracket, and under the elastic seat of the spring 242, the locking nail 241 is ejected to be stuck in the bayonet, thereby fixing the first connection part 213 and the caster bracket, or the second connection part 224 and the caster bracket.

[0034] Further, in order to avoid wear between the second connecting member 22 and the mounting frame 1 and the buckle, based on the above embodiment, in other embodiments, such as Figure 2 As shown, a gasket 26 is disposed on the top surface of the second disc portion 221 and under the bottom surface of the third disc portion 222 .

[0035] Specifically, by setting a gasket 26 on the top surface of the second disc portion 221, mutual wear between the second connecting member 22 and the buckle mechanism 3 is avoided, and by setting a gasket 26 under the bottom surface of the third disc portion 222, mutual wear between the second connecting member 22 and the mounting frame 1 is avoided.

[0036] Further, such as Figure 1 , Figure 2 and Figure 6 As shown, the buckle mechanism 3 includes a support base 31, a first buckle assembly 32, and a second buckle assembly 33. One end of the support base 31 is fixedly arranged on the top of the first rotating shaft 12. The first buckle assembly 32 and the second buckle assembly 33 are relatively arranged on the support base 31, and a fixing area 34 for fixing the bracket is formed between the first buckle assembly 32 and the second buckle assembly 33.

[0037] Further, based on the above embodiments, in other embodiments, the first buckle assembly 32 is disposed at one end of the support base 31 , and the second buckle assembly 33 is movably sleeved on the support base 31 .

[0038] Specifically, by movably setting the second snap assembly 33, the second snap assembly 33 can slide on the support base 31 to adjust the distance between the first snap assembly 32 and the second snap assembly 33, so that the size of the fixed area 34 between the first snap assembly 32 and the second snap assembly 33 is adjustable, thereby adapting to brackets of different sizes to suit different application scenarios.

[0039] Further, in order to increase the anti-slip performance between the second buckle assembly 33 and the support base 31, so as to fix the bracket more stably, based on the above embodiment, in other embodiments, such as Figure 7 As shown, an anti-slip member 36 is provided on the inner side wall of the second buckle assembly 33 .

[0040] Specifically, the anti-slip member 36 is fixedly disposed on the inner side wall, and the contact surface between the anti-slip member 36 and the support base 31 is configured to be frosted, thereby increasing the friction between the anti-slip member 36 and the support base 31 .

[0041] Furthermore, in order to better fix the bracket, based on the above embodiment, in other embodiments, such as Figure 2 As shown, the first buckle assembly 32 includes a first buckle 321 that is tilted, the second buckle assembly 33 includes a second buckle 331 and a first locking member 332, the second buckle assembly 33 is arranged on the first locking member 332, the first locking member 332 is movably sleeved on the support base 31, the second buckle 331 is tilted on a side opposite to the first buckle 321 and the tilting direction is opposite to the tilting direction of the first buckle 321, so that the top ends of the first buckle 321 and the second buckle 331 are close to each other, the bottom ends of the first buckle 321 and the second buckle 331 are far away from each other, and the opposite side of the first buckle 321 and the second buckle 331 is arranged in an arc shape.

[0042] Specifically, by relatively tilting the first clip 321 and the second clip 331, the clip mechanism 3 can be used to fix a bracket that is obliquely inserted into the fixing area 34, such as a tripod. When the bracket is installed on the caster set, the foot of the bracket will be obliquely inserted into the fixing area 34. If the first clip 321 and the second clip 331 are not tilted, the first clip 321 and the second clip 331 may not be able to fix it. In addition, by setting the opposite side of the first clip 321 and the second clip 331 to an arc shape, the bracket is not easy to fall off after the first clip 321 and the second clip 331 fix the bracket.

[0043] Further, based on the above embodiments, in other embodiments, such as Figure 6 As shown, the first locking member 332 includes an annular sleeve portion 3321, a first locking portion 3322, a second locking portion 3323, a first locking knob 3324, a second shaft 3325 and a shaft support rod 3326, the annular sleeve portion 3321 is movably sleeved on the support base 31, the annular sleeve portion 3321 is provided with a notch 33211, the first locking portion 3322 is provided at the top of the notch 33211 and connected to the annular sleeve portion 3321, the second locking portion 3323 is provided at the bottom of the notch 33211 and connected to the annular sleeve portion 3321 The first locking portion 3322 and the second locking portion 3323 are connected, and are arranged opposite to each other and are spaced a certain distance apart. When the first locking portion 3322 and the second locking portion 3323 are locked, the distance between the first locking portion 3322 and the second locking portion 3323 becomes smaller, which makes the area enclosed by the annular sleeve portion 3321 have a tendency to shrink inward, and the annular sleeve portion 3321 applies a force to its center, thereby increasing the pressure between the annular sleeve portion 3321 and the support base 31 bracket, so as to achieve the effect of locking the annular sleeve portion 3321 and the support base 31. The first locking portion 3322 and the second locking portion 3323 are both provided with a first mounting hole 3327, the side surface of the second rotating shaft 3325 is provided with a second mounting hole 33251, the top of the rotating shaft support rod 3326 passes through the first mounting hole 3327 and is fixedly provided in the second mounting hole 33251, the bottom end of the rotating shaft support rod 3326 is provided with a first limiting portion 33261, and the first limiting portion 33261 abuts against the bottom surface of the second locking portion 3323 The first locking knob 3324 is provided with a third mounting hole 33241 for mounting the second rotating shaft 3325, and the second rotating shaft 3325 is rotatably disposed in the third mounting hole 33241. The first locking knob 3324 is provided with a first abutting surface 33242 and a second abutting surface 33243, and the distance between the third mounting hole 33241 and the first abutting surface 33242 is smaller than the distance between the third mounting hole 33241 and the second abutting surface 33243.

[0044] Specifically, by setting the position of the third mounting hole 33241, the distance between the third mounting hole 33241 and the first abutting surface 33242 is smaller than the distance between the third mounting hole 33241 and the second abutting surface 33243. By rotating the first locking knob 3324, the distance between the third mounting hole 33241 and the top surface of the first locking portion 3322 is changed, and the distance between the first locking portion 3322 and the second locking portion 3323 is changed, thereby achieving the purpose of controlling the first locking member 332 to lock the support base 31 by the first locking knob 3324. When the first locking knob 3324 is rotated to the first preset position, the first abutting surface 33242 abuts against the top surface of the first locking portion 3322, and the distance between the first abutting surface 33242 and the third mounting hole 33241 is smaller. At this time, the distance between the first locking portion 3322 and the second locking portion 3323 is expanded, and the annular sleeve portion 3321 is no longer locked on the support base 31, and the position of the first locking member 332 can be adjusted; when the first locking knob 3324 is rotated to the second preset position, the second abutting surface 33243 abuts against the top surface of the second locking portion 3323, and the distance between the second abutting surface 33243 and the third mounting hole 33241 is larger. At this time, the distance between the first locking portion 3322 and the second locking portion 3323 is reduced, the annular sleeve portion 3321 locks the support base 31, and the position of the first locking member 332 is fixed.

[0045] Furthermore, in order to prevent the first locking member 332 from sliding off the supporting base 31, based on the above embodiment, in other embodiments, as Figure 6 As shown, the other end of the support base 31 is provided with a second limiting member 35 for limiting the second buckle assembly 33 .

[0046] Specifically, the edge position of the human limiting member exceeds the edge of the supporting base 31 , thereby forming a protruding structure to block the first locking member 332 .

[0047] The present application also provides a bracket caster set, which includes at least one caster bracket and at least two detachable casters described in the above embodiments, one end of the caster bracket is detachably connected to a connecting piece of a detachable caster, and the other end of the caster bracket is detachably connected to a connecting piece of another detachable caster.

[0048] See also Figure 8 , Figure 8 The structural schematic diagram of a two-wheeled bracket caster set is shown. The bracket caster set includes a caster bracket 100A and two detachable casters 200A, one end of the caster bracket 100A is detachably connected to a connecting piece of one detachable caster 200A, and the other end of the caster bracket 100A is detachably connected to a connecting piece of another detachable caster 200A.

[0049] See also Fig. 9 , Fig. 9 The structural schematic diagram of a three-wheel bracket caster set is shown. The bracket caster set includes a first caster bracket 100B, a second caster bracket 200B, a third caster bracket 300B, a first detachable caster 400B, a second detachable caster 500B, and a third detachable caster 600B. One end of the first caster bracket 100B is connected to the first connecting piece of the first detachable caster 400B, the other end of the first caster bracket 100B is connected to the first connecting piece of the second detachable caster 500B, one end of the second caster bracket 200B is connected to the second connecting piece of the first detachable caster 400B, the other end of the second caster bracket 200B is connected to the first connecting piece of the third detachable caster 600B, one end of the third caster bracket 300B is connected to the second connecting piece of the second detachable caster 500B, and the other end of the third caster bracket 300B is connected to the second connecting piece of the third detachable caster 600B.

[0050] See also Fig.10 , Fig.10 The structural schematic diagram of a four-wheel bracket caster set is shown. The bracket caster set includes a first caster bracket 100C, a second caster bracket 200C, a third caster bracket 300C, a fourth caster bracket 400C, a first detachable caster 500C, a second detachable caster 600C, a third detachable caster 700C, and a fourth detachable caster 800C. One end of the first caster bracket 100B is connected to the first connecting piece of the first detachable caster 500C, the other end of the first caster bracket 100B is connected to the first connecting piece of the second detachable caster 600C, one end of the second caster bracket 200B is connected to the second connecting piece of the second detachable caster 600C, the other end of the second caster bracket 200B is connected to the first connecting piece of the third detachable caster 700C, one end of the third caster bracket 300B is connected to the second connecting piece of the third detachable caster 700C, the other end of the third caster bracket 300B is connected to the first connecting piece of the fourth detachable caster 800C, one end of the fourth caster bracket 400C is connected to the second connecting piece of the fourth detachable caster 800C, and the other end of the third caster bracket 300B is connected to the second connecting piece of the first detachable caster 500C.

[0051] Further, such as Fig.11As shown, the caster bracket 200 includes a first telescopic tube 2001, a second telescopic tube 2002 and a second locking member 2003, one end of the first telescopic tube 2001 is arranged in the second telescopic tube 2002, the end of the second telescopic tube 2002 connected to the first telescopic tube 2001 is provided with an opening 20021, the second locking member 2003 includes an annular support portion 20031, a second locking knob 20032 and a fixing block 20033, the annular support portion 20031 is fixedly arranged on the second telescopic tube 2002 and wraps the opening 20021, the annular support portion 20031 is provided with a knob mounting portion 20034, and the second locking knob 20032 is provided with a fixing block 20033. One end of the second locking knob 20032 is arranged on the knob mounting portion 20034 and is rotatably connected to the knob mounting portion 20034. A fixing protrusion 20035 is arranged on one end of the second locking knob 20032. The fixing protrusion 20035 is arranged at the opening 20021. The fixing block 20033 is arranged between the fixing protrusion 20035 and the first telescopic tube 2001. A groove matching the edge of the first telescopic tube 2001 is arranged on the side of the fixing block 20033 in contact with the first telescopic tube 2001. When the second locking knob 20032 is rotated to a specified position, the fixing protrusion 20035 presses against the fixing block 20033 to fix the first telescopic tube 2001.

[0052] In this embodiment, the caster bracket is set to be adjustable in length, so that the caster set can be applied to more application scenarios and meet the diverse usage needs of users. Specifically, when it is necessary to adjust the length of the caster bracket, by rotating the second locking knob 20032 to the fourth preset position, the fixing protrusion 20035 is rotated to the outside of the fixing port 20021 and no longer presses against the fixing block 20033, and the first telescopic tube 2001 is released, and the length of the caster bracket can be adjusted; after the length of the caster bracket is adjusted, the second locking knob 20032 is rotated to the third preset position, and the fixing protrusion 20035 passes through the fixing port 20021 and presses against the fixing block 20033, so that the fixing block 20033 presses against the first telescopic tube 2001, thereby fixing the first telescopic tube 2001.

[0053] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application. Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A detachable caster, characterized in that: It includes: A mounting frame, wherein a roller is disposed at the bottom of the mounting frame, and a first rotating shaft is disposed at the top of the mounting frame, and the first rotating shaft can rotate relative to the mounting frame; At least two connecting members, one end of each connecting member is movably sleeved on the first rotating shaft so that the at least two connecting members can rotate relative to the first rotating shaft, and the other end of each connecting member is provided with a connecting portion for connecting to a caster bracket; A buckle mechanism for fixing the bracket, wherein the buckle mechanism is arranged on the top of the first rotating shaft.

2. The detachable caster according to claim 1, characterized in that: The at least two connecting members include a first connecting member and a second connecting member, the first connecting member includes a first disc portion, a first connecting rod and a first connecting portion, the second connecting member includes a second disc portion, a third disc portion, a second connecting rod and a second connecting portion, the side wall of the first disc portion is connected to the center of one end of the first connecting rod, the side wall of the second disc portion is connected to the top of one end of the second connecting rod, the side wall of the third disc portion is connected to the bottom of one end of the second connecting rod, and the second disc portion and the third disc portion are arranged opposite to each other, so that a accommodating area is formed between the second disc portion and the third disc portion, the first disc portion is accommodated in the accommodating area, and the first disc portion, the second disc portion and the third disc portion are all provided with a through hole at the center of the first disc portion, the second disc portion and the third disc portion, and the first rotating shaft passes through the through hole so that the first connecting member and the second connecting member can rotate relative to the first rotating shaft.

3. The detachable caster according to claim 2, characterized in that: The top surface and the bottom surface of the first disc portion are both provided with at least one annular groove.

4. The detachable caster according to claim 2, characterized in that: The first connection part and the second connection part are both provided with a locking button for locking the caster bracket, and the locking button includes at least one locking nail, a spring and a spring mounting tube. The first connection part and the second connection part are both provided with at least one locking hole, and the locking nail is accommodated in the locking hole. The spring mounting tube is arranged in the first connection part and the second connection part and faces the locking hole. The spring is arranged in the spring mounting tube, and one end of the spring abuts against the locking nail. The locking nail extends out of the locking hole under the elastic action of the spring.

5. The detachable caster according to claim 2, characterized in that: Gaskets are disposed on the top surface of the second disc portion and under the bottom surface of the third disc portion.

6. The detachable caster according to claim 1, characterized in that: The buckle mechanism includes a support base, a first buckle assembly, and a second buckle assembly. One end of the support base is fixedly arranged on the top of the first rotating shaft. The first buckle assembly and the second buckle assembly are relatively arranged on the support base, and a fixing area for fixing the bracket is formed between the first buckle assembly and the second buckle assembly.

7. The detachable caster according to claim 6, characterized in that: The first buckle assembly is arranged at one end of the support base, and the second buckle assembly is movably sleeved on the support base.

8. The detachable caster according to claim 7, characterized in that: The first buckle assembly includes a first buckle member that is tilted, the second buckle assembly includes a second buckle member and a first locking member, the second buckle member is arranged on the first locking member, the first locking member is movably mounted on the support base, the second buckle member is tilted on a side opposite to the first buckle member and the tilting direction is opposite to the tilting direction of the first buckle member, so that the tops of the first buckle member and the second buckle member are close to each other, the bottoms of the first buckle member and the second buckle member are far away from each other, and the side opposite to the first buckle member and the second buckle member is arranged in an arc shape.

9. The detachable caster according to claim 8, characterized in that: The first locking member includes an annular sleeve portion, a first locking portion, a second locking portion, a first locking knob, a second rotating shaft and a rotating shaft support rod, the annular sleeve portion is movably sleeved on the support base, the annular sleeve portion is provided with a notch, the first locking portion is arranged at the top of the notch and connected to the annular sleeve portion, the second locking portion is arranged at the bottom of the notch and connected to the annular sleeve portion, the first locking portion and the second locking portion are arranged opposite to each other and are spaced a certain distance apart, the first locking portion and the second locking portion are both provided with a first mounting hole, the second rotating shaft A second mounting hole is provided on the side surface, the top of the rotating shaft support rod passes through the first mounting hole and is fixedly set in the second mounting hole, the bottom end of the rotating shaft support rod is provided with a first limiting portion, the first limiting portion abuts against the bottom surface of the second locking portion, a third mounting hole for installing the second rotating shaft is provided on the first locking knob, the second rotating shaft is rotatably set in the third mounting hole, a first abutting surface and a second abutting surface are provided on the first locking knob, and the distance between the third mounting hole and the first abutting surface is smaller than the distance between the third mounting hole and the second abutting surface.

10. The detachable caster according to claim 7, characterized in that: The other end of the support base is provided with a second limiting member for limiting the second buckle assembly.

11. A bracket caster set, characterized in that: It comprises at least one caster bracket and at least two detachable casters as described in any one of claims 1-10, wherein one end of the caster bracket is detachably connected to a connecting piece of one of the detachable casters, and the other end of the caster bracket is detachably connected to a connecting piece of another of the detachable casters.

12. The bracket caster assembly according to claim 11, characterized in that: The caster bracket includes a first telescopic tube, a second telescopic tube and a second locking piece, one end of the first telescopic tube is arranged in the second telescopic tube, the end of the second telescopic tube connected to the first telescopic tube is provided with an opening, the second locking piece includes an annular support portion, a second locking knob and a fixing block, the annular support portion is fixedly arranged on the second telescopic tube and wraps the opening, the annular support portion is provided with a knob mounting portion, one end of the second locking knob is arranged on the knob mounting portion and is rotatably connected to the knob mounting portion, one end of the second locking knob is provided with a fixing protrusion, the fixing protrusion is arranged at the opening, the fixing block is arranged between the fixing protrusion and the first telescopic tube, a surface of the fixing block contacting the first telescopic tube is provided with a groove matching the edge of the first telescopic tube, and when the second locking knob is rotated to a specified position, the fixing protrusion presses against the fixing block to fix the first telescopic tube.

Images