Detachable trundle and support trundle set with same

Abstract

The utility model discloses a detachable caster and a support caster set with the detachable caster, the detachable caster comprises a mounting rack, a first rotating shaft, a second rotating shaft, a first connecting rod and a second connecting rod, the bottom of the mounting rack is provided with a roller, and the top of the mounting rack is provided with a first rotating shaft which 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 are increasingly using caster sets in production and life to achieve convenient, fast and stable transportation of objects. A caster set is a supporting mechanism composed of multiple universal wheels and a bracket. A universal wheel is provided at the bottom of the caster set, so that it can be easily moved. For example, a tripod for placing photographic and video equipment adopts a triangular bracket structure. A universal wheel is provided 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 model, such as a fixed structure tripod or a fixed structure quadripod, so that users need to prepare separate caster sets suitable for different application scenarios, such as a two-wheel caster set suitable for lightweight carts, a three-wheel caster set suitable for photographic equipment, and a four-wheel caster set suitable for heavy-duty carts. As a result, the application range of caster sets with this structure is relatively narrow, it is difficult to adapt to various complex working environments, and the practicality is poor. Utility Model Content

[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 to the caster bracket; a snap mechanism for fixing the bracket, and the snap mechanism is provided at 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 a through hole for accommodating the first rotating shaft at the center, 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 connecting part and the second connecting part, and the locking button includes at least one locking pin, a spring and a spring mounting tube. At least one locking hole is provided at the first connecting part and the second connecting part, and the locking pin is accommodated in the locking hole. The spring mounting tube is provided in the first connecting part and the second connecting part, and is opposite to the locking hole. The spring is provided in the spring mounting tube, and one end of the spring abuts against the locking pin, and the locking pin 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 arranged on the top of the first rotating shaft. The first snap assembly and the second snap assembly are relatively arranged on the support base, and a fixed 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 snap assembly is arranged at one end of the support base, and the second snap assembly is movably sleeved on the support base.

[0012] As a further improvement of the present application, the first snap assembly includes a first snap-on component that is arranged at an angle, the second snap-on assembly includes a second snap-on component and a first locking component, the second snap-on component is arranged on the first locking component, the first locking component is movably sleeved on the support base, the second snap-on component is arranged at an angle on a side opposite to the first snap-on component and the inclination direction is opposite to the inclination direction of the first snap-on component, so that the tops of the first snap-on component and the second snap-on component are close to each other, the bottom ends of the first snap-on component and the second snap-on component are far away from each other, and the opposite sides of the first snap-on component and the second snap-on component are 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 is connected to the annular sleeve portion, the second locking portion is provided at the bottom of the notch and is 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 the bottom surface of the second locking portion, a third mounting hole for mounting 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 member, 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 member 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 the 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. When the second locking knob is rotated to the 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:

[0018] 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 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 different environments and have stronger practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the detachable caster of the present application;

[0020] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the detachable caster of the present application;

[0021] Figure 3 This is a schematic structural diagram of a first connecting member of an embodiment of the detachable caster of the present application;

[0022] Figure 4 This is a schematic structural diagram of the second connecting member of an embodiment of the detachable caster of the present application;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the locking button of one embodiment of the detachable caster of the present application;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the buckle mechanism of one embodiment of the detachable caster of the present application;

[0025] Figure 7 This is another exploded structural diagram of the buckle mechanism of one embodiment of the detachable caster of the present application;

[0026] Figure 8 This is a structural diagram of an embodiment of the bracket caster assembly of the present application;

[0027] Figure 9 This is a structural diagram of another embodiment of the bracket caster assembly of the present application;

[0028] Figure 10 This is a structural diagram of another embodiment of the bracket caster assembly of this application

[0029] Figure 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

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] Figure 1 and Figure 2The following is a schematic diagram showing the structure of an embodiment of the detachable caster wheel of the present application. Figure 1 and Figure 2 As shown, the detachable caster includes a mounting frame 1, at least two connecting members 2, and a snap mechanism 3. A roller 11 is provided at the bottom of the mounting frame 1, and a first rotating shaft 12 is provided at the top of the mounting frame 1. The at least two connecting members 2 each have one end movably mounted on the first rotating shaft 12, allowing them to rotate relative to the first rotating shaft 12. The other ends of the at least two connecting members 2 are provided with a connection portion for connecting to the caster bracket. The snap mechanism 3, used to secure the bracket, is provided at the top of the first rotating shaft 12.

[0032] The roller 11 disposed at the bottom of the mounting frame 1 is generally spherical, and may be a relatively regular sphere or nearly spherical, which is not limited in this application. Furthermore, at least a portion of the measuring area of ​​the roller 11 is configured as a flat surface. It is understood that the roller 11 required by this application can be obtained by removing opposite sides of a spherical or quasi-spherical object, thereby constructing circular flat surfaces on both sides of the spherical object.

[0033] Among them, the first rotating shaft 12 is arranged on the mounting frame 1 in the vertical direction, the snap 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 snap mechanism 3 can rotate relative to the mounting member. Conversely, when the snap 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.

[0034] 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°.

[0035] The buckle mechanism 3 is provided at the top end of the first rotating shaft 12 , and is used to fix an external bracket, such as the foot of a tripod, which can be fixed by the buckle mechanism 3 .

[0036] Specifically, when assembling the caster set, connect the connector of one caster to one end of the caster bracket, and then connect the connector of the other caster 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 to meet the needs of various usage environments.

[0037] The detachable caster of this embodiment is achieved 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.

[0038] Furthermore, 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 each other, so that a accommodating area 225 is formed between the second disc portion 221 and the third disc portion 222, and the first disc portion 211 is accommodated in the accommodating 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 a through hole 23 for accommodating the first rotating shaft 12. 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.

[0039] Specifically, in this embodiment, the number of connectors is preferably set to two, namely a first connector 21 and a second connector 22. The connection between the first connector 21 and the second connector 22 and the first rotating shaft 12 adopts a disc structure, thereby preventing the first connector 21 and the second connector 22 from blocking each other and failing to reach the corresponding angle during rotation. In addition, in this embodiment, the first disc portion 211 of the first connector 21 is connected to the center of the end of the first connecting rod 212, and the second disc portion 221 and the third disc portion 222 of the second connecting portion 224 are connected to the top and bottom of the end of the second connecting rod 223 respectively. The first disc portion 211 is then 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 connector 21 and the second connector 22, preventing the first connector 21 and the second connector 22 from shaking relative to each other, thereby improving the stability of the assembled caster assembly. Moreover, 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 that bears force is also larger. When the caster assembly supports heavier objects, the force is more dispersed, thereby being able to support heavier objects.

[0040] Furthermore, 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 provided on the top surface and the bottom surface of the first disc portion 211 .

[0041] Specifically, by setting 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.

[0042] Furthermore, based on the above embodiments, in other embodiments, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the first connecting portion 213 and the second connecting portion 224 are both provided with a locking button 24 for locking the caster bracket, and the locking button 24 includes at least one locking nail 241, a spring 242 and a spring mounting tube 243. The first connecting portion 213 and the second connecting portion 224 are both provided with at least one locking hole 25, and the locking nail 241 is accommodated in the locking hole 25. The spring mounting tube 243 is arranged in the first connecting portion 213 and the second connecting portion 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 from the locking hole 25 under the elastic action of the spring 242.

[0043] The top of the locking pin 241 is hemispherical, and the bottom is locked in the locking hole 25 by a limiting structure. A spring 242 is provided at the bottom of the locking pin 241, allowing the locking pin 241 to be ejected from the locking hole 25 under the action of elasticity. The spring mounting tube 243 serves to secure the spring 242. Preferably, in this embodiment, there are two locking pins 241. The top and bottom surfaces of the first and second connection points are provided with mutually opposing locking holes 25, and the two locking pins 241 are respectively provided at the two ends of the spring 242. It is understood that the greater the number of locking pins 241, the better the locking effect. It should be noted that a bayonet that matches the locking pin 241 needs to be provided on the caster bracket.

[0044] Specifically, by setting a locking button 24 on the first connecting portion 213 and the second connecting portion 224, a detachable connection between the first connecting portion 213, the second connecting portion 224 and the caster bracket is achieved. When the caster bracket needs to be installed, the locking pin 241 is manually pressed and the first connecting portion 213 or the second connecting portion 224 is inserted into the caster bracket. After being inserted into the designated position, the locking pin 241 moves to the slot of the caster bracket and is elastically seated by the spring 242. The locking pin 241 is ejected and snapped into the slot, thereby fixing the first connecting portion 213 and the caster bracket, or the second connecting portion 224 and the caster bracket.

[0045] Furthermore, in order to avoid wear between the second connecting member 22 and the mounting bracket 1 and the buckle, based on the above embodiment, in other embodiments, such as Figure 2 As shown, a gasket 26 is provided on the top surface of the second disc portion 221 and under the bottom surface of the third disc portion 222 .

[0046] Specifically, by arranging a gasket 26 on the top surface of the second disc portion 221, mutual wear between the second connecting member 22 and the snap mechanism 3 is avoided, and by arranging 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.

[0047] Further, such as Figure 1 、 Figure 2 and Figure 6 As shown, the snap mechanism 3 includes a support base 31, a first snap assembly 32, and a second snap assembly 33. One end of the support base 31 is fixedly arranged on the top of the first rotating shaft 12. The first snap assembly 32 and the second snap assembly 33 are relatively arranged on the support base 31, and a fixing area 34 for fixing the bracket is formed between the first snap assembly 32 and the second snap assembly 33.

[0048] Furthermore, based on the above embodiment, in other embodiments, the first buckle assembly 32 is provided at one end of the support base 31 , and the second buckle assembly 33 is movably sleeved on the support base 31 .

[0049] 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 can be adjusted, thereby adapting to brackets of different sizes to suit different application scenarios.

[0050] Furthermore, in order to increase the anti-slip performance between the second buckle assembly 33 and the support base 31, thereby fixing the bracket more firmly, 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 .

[0051] 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 .

[0052] Furthermore, in order to better fix the bracket, based on the above embodiment, in other embodiments, such as Figure 2 As shown, the first snap assembly 32 includes a first snap assembly 321 that is set at an angle, the second snap assembly 33 includes a second snap assembly 331 and a first locking member 332, the second snap assembly 33 is set on the first locking member 332, the first locking member 332 is movably sleeved on the support base 31, the second snap assembly 331 is set at an angle on the side opposite to the first snap assembly 321 and the inclination direction is opposite to the inclination direction of the first snap assembly 321, so that the top ends of the first snap assembly 321 and the second snap assembly 331 are close to each other, the bottom ends of the first snap assembly 321 and the second snap assembly 331 are away from each other, and the opposite side of the first snap assembly 321 and the second snap assembly 331 is set to an arc shape.

[0053] Specifically, by arranging the first and second latches 321, 331 relative to each other at an angle, the latch mechanism 3 can be used to secure a bracket that is obliquely inserted into the fixing area 34, such as a tripod. When the bracket is mounted on the caster assembly, the leg of the bracket will be obliquely inserted into the fixing area 34. If the first and second latches 321, 331 are not arranged at an angle, the first and second latches 321, 331 may not be able to secure the bracket. Furthermore, by arranging the opposing sides of the first and second latches 321, 331 into an arc shape, the bracket is not likely to fall off after being secured by the first and second latches 321, 331.

[0054] Furthermore, 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 separated by a certain distance. 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. A first mounting hole 3327 is provided on each of the first locking portion 3322 and the second locking portion 3323. A second mounting hole 33251 is provided on the side of the second rotating shaft 3325. 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, which 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 set 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.

[0055] 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 changes, and the distance between the first locking portion 3322 and the second locking portion 3323 changes, thereby achieving the purpose of using the first locking knob 3324 to control the first locking member 332 to lock the support base 31. When the first locking knob 3324 is rotated to the first preset position, the first abutting surface 33242 abuts 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 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.

[0056] Furthermore, in order to prevent the first locking member 332 from sliding off the support base 31, based on the above embodiment, in other embodiments, such 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 .

[0057] Specifically, the edge of the human limiting member exceeds the edge of the support base 31 , thereby forming a protruding structure to block the first locking member 332 .

[0058] 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.

[0059] See also Figure 8 , Figure 8 A schematic diagram of a two-wheeled caster assembly is shown. The caster assembly includes a caster bracket 100A and two detachable casters 200A. One end of the caster bracket 100A is detachably connected to a connector of one detachable caster 200A, and the other end of the caster bracket 100A is detachably connected to a connector of the other detachable caster 200A.

[0060] See also Figure 9 , Figure 9 A schematic diagram of the structure of a three-wheeled caster bracket assembly is shown. The caster bracket assembly 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 member of the first detachable caster 400B, the other end of the first caster bracket 100B is connected to the first connecting member of the second detachable caster 500B, one end of the second caster bracket 200B is connected to the second connecting member of the first detachable caster 400B, the other end of the second caster bracket 200B is connected to the first connecting member of the third detachable caster 600B, one end of the third caster bracket 300B is connected to the second connecting member of the second detachable caster 500B, and the other end of the third caster bracket 300B is connected to the second connecting member of the third detachable caster 600B.

[0061] See also Figure 10 , Figure 10 A schematic diagram of a four-wheeled caster assembly is shown. The caster assembly 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.

[0062] Further, such as Figure 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 provided on the second telescopic tube 2002 and wraps the opening 20021. The annular support portion 20031 is provided with a knob mounting portion 20034. The second locking knob 20032 is provided with a fixing block 20033. One end of the second locking knob 20032 is provided on the knob mounting portion 20034 and is rotatably connected to the knob mounting portion 20034. A fixing protrusion 20035 is provided on one end of the second locking knob 20032. The fixing protrusion 20035 is provided at the opening 20021. The fixing block 20033 is provided between the fixing protrusion 20035 and the first telescopic tube 2001. A groove matching the edge of the first telescopic tube 2001 is provided on the surface of the fixing block 20033 that contacts 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.

[0063] This embodiment provides an adjustable length caster bracket, making the caster assembly suitable for a wider range of applications and meeting the diverse needs of users. Specifically, when the length of the caster bracket needs to be adjusted, the second locking knob 20032 is rotated to the fourth preset position, causing the fixing protrusion 20035 to rotate outside the fixing opening 20021 and no longer abut against the fixing block 20033. 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, causing the fixing protrusion 20035 to pass through the fixing opening 20021 and abut against the fixing block 20033, causing the fixing block 20033 to abut against the first telescopic tube 2001, thereby securing the first telescopic tube 2001.

[0064] Although 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 inventive 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 this application. Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if such changes and modifications fall within the scope of the claims of this application and their equivalents, then this application is intended to include such changes and modifications.

Claims

1. A detachable caster, characterized in that: It includes: A mounting frame, wherein a roller is provided at the bottom of the mounting frame, and a first rotating shaft is provided at the top of the mounting frame, and the first rotating shaft is rotatable relative to the mounting frame; at least two connecting members, one end of each connecting member being 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 being provided with a connecting portion for connecting to a caster bracket; A snap mechanism for fixing the bracket, wherein the snap 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 member, the second connecting member includes a second disc portion, a third disc portion, a second connecting rod and a second connecting member, 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 for accommodating the first rotating shaft at the center, 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 connecting portion and the second connecting portion 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 connecting portion and the second connecting portion 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 connecting portion and the second connecting portion 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 from the locking hole under the elastic action of the spring.

5. The detachable caster according to claim 2, characterized in that: Gaskets are provided 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 snap mechanism includes a support base, a first snap assembly, and a second snap assembly. One end of the support base is fixedly arranged on the top of the first rotating shaft. The first snap assembly and the second snap assembly are relatively arranged on the support base, and a fixing area for fixing the bracket is formed between the first snap assembly and the second snap 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 clip assembly includes a first clip that is set at an angle, the second clip assembly includes a second clip and a first locking piece, the second clip is set on the first locking piece, the first locking piece is movably sleeved on the support base, the second clip is set at an angle on a side opposite to the first clip, and the inclination direction is opposite to the inclination direction of the first clip, so that the tops of the first clip and the second clip are close to each other, the bottom ends of the first clip and the second clip are far away from each other, and the opposite sides of the first clip and the second clip are set to 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 supporting 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, 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 the bottom surface of the second locking portion, and a third mounting hole for installing the second rotating shaft is provided on the first locking knob, and the second rotating shaft is rotatably set in the third mounting hole, and 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 according to any one of claims 1 to 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 member, 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 member 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 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 surface of the fixing block contacting the first telescopic tube is provided with a groove matching the edge of the first telescopic tube. 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.

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