Quick-disassembly structure that can be quickly assembled

Abstract

The present invention provides a quick-release structure that can be quickly assembled, which includes: a fork, on the outer side of one end of which there is a receiving groove; a clamping assembly, which includes: a base that can be fixed in the receiving groove, on the outer side of the base there is a circular groove having a circular groove hole, and a plurality of strip-shaped grooves are arranged in the inner ring of the circular groove; a plurality of arc-shaped clamping plates arranged in the circular groove, each of the arc-shaped clamping plates respectively has a first column shaft and a second column shaft, and the first column shaft slides in the strip-shaped groove; an elastic ring that is buckled on the outer side edges of the arc-shaped clamping plates, so that a movable clamping opening is formed in the center of each of the arc-shaped clamping plates and is in a state of being clamped; a shaft cover, on the inner side of which a plurality of rotating shaft grooves are respectively provided for pivotally assembling each of the second column shafts, and the shaft cover is pivotally assembled with the base as a whole, and a quick-release group having a shaft rod, one end of the shaft rod is provided with a necking section and an enlarged end; the shaft rod penetrates into the movable clamping opening with the enlarged end; through the above structure, the substantial effect of quick assembly is achieved.

Description

Technical Field

[0001] The present invention relates to a quick-release structure, especially a fork having a clamping assembly, the clamping assembly having a movable clamping opening in the shape of a camera shutter, and the shaft of the quick-release assembly being provided with a necking section and an enlarged end. The enlarged end can quickly pass through the movable clamping opening, and the movable clamping opening can then elastically contract to clamp the necking section, thereby achieving quick assembly. Background Art

[0002] In the existing quick-release and wheel assembly structures of bicycles, as shown in Figures 1 and 2, a fork 10 of a bicycle has a quick-release wheel set 11 that can be inserted through both ends thereof. One end of the fork 10 has an internal thread hole 101; the quick-release wheel set 11 includes a hub 12 and a quick-release assembly 13; the quick-release assembly 13 has a shaft 14, one end of the shaft 14 is provided with an integral external thread 15, and the other end has a locking assembly 16. The locking assembly 16 has a pressing block 17, a driving shaft 18, and a locking handle 19. The external thread 15 is screwed into the internal thread hole 101 of the fork 10. By rotating the locking handle 19 with the driving shaft 18 as the axis, the locking handle 19 presses the pressing block 17 against the outside of the fork 10 at the eccentric portion 191, so as to achieve the purpose that the quick-release assembly 13 can tighten the fork 10 to fix the hub 12. In the above structure, when the external thread 15 of the shaft 14 is screwed into the internal thread hole 101 of the fork 10, it is very laborious and time-consuming to screw the external thread 15 into the internal thread hole 101 one by one by rotating the locking handle 19 and the shaft 14. It is very inconvenient to use, and there is a need for improvement. Summary of the Invention

[0003] The main object of the present invention is to solve the above problems, and to provide a quick-release structure that can be quickly assembled. The main technical object is: The present invention is provided with a clamping assembly on the fork. The clamping assembly has a movable clamping opening that can be contracted or expanded. The shaft of the quick-release assembly is provided with a necking section and an enlarged end. The enlarged end can quickly pass through the movable clamping opening to elastically expand and pass through, and the movable clamping opening can then elastically contract to clamp the necking section, thereby achieving quick assembly.

[0004] According to the above object of the present invention, a quick-release structure that can be quickly assembled is provided, which includes: a fork, on the outer side of one end of which there is a receiving groove, and a horizontal circular through hole is provided in the receiving groove; a clamping assembly, which includes: a base that can be fixed in the receiving groove, a circular groove is provided on the outer side of the base, a circular groove hole corresponding to the position of the circular through hole is provided at the center of the circular groove, and a plurality of strip-shaped grooves arranged at equal intervals in the radially outward direction are provided around the circular groove hole in the circular groove; a plurality of arc-shaped clamping plates arranged at equal intervals in a ring shape in the circular groove, each of the arc-shaped clamping plates has a first column shaft, the first column shaft is slidably arranged in the strip-shaped groove, and the arc-shaped clamping plate has a second column shaft in the opposite direction to the first column shaft; an elastic ring that is buckled on the outer side edges of each of the arc-shaped clamping plates, so that a movable clamping opening is formed in the center of the arc-shaped clamping plates surrounded in a ring shape; and an axle cover, on the inner side of which a plurality of rotating shaft grooves are provided in a ring shape, and each of the second column shafts is pivotally arranged in each of the rotating shaft grooves respectively, and the axle cover is pivotally integrated with the base rotatably, rotating the axle cover can synchronously drive each of the arc-shaped clamping plates, so that each of the arc-shaped clamping plates takes the second column shaft as an axis, and the first column shaft slides in the strip-shaped groove, and when the first column shaft slides to the outer side direction of the strip-shaped groove, each of the arc-shaped clamping plates can resist the elastic force of the elastic ring, so that the movable clamping opening is expanded; and a quick-release group, which has a shaft rod, one end of the shaft rod is sequentially provided with a necking section and an enlarged end, the diameter of the enlarged end is larger than the aperture of the movable clamping opening in the clamped state, and a locking assembly is provided at the other end of the shaft rod; the two ends of the fork can penetrate the shaft rod of the quick-release group, the shaft rod penetrates into the circular groove hole from the inner side of the fork with the enlarged end, and the enlarged end resists the elastic force of the elastic ring, and at the same time, the first column shafts of each of the arc-shaped clamping plates slide outward along the strip-shaped groove respectively, so that each of the arc-shaped clamping plates opens outward with the second column shaft as an axis, the movable clamping opening is in an expanded state, so that the enlarged end can pass through, after the enlarged end passes through the movable clamping opening, the movable clamping opening is clamped to the necking section by the elastic force of the elastic ring, and then the shaft rod is tightened by the locking assembly.

[0005] In an embodiment of the present invention, each of the arc-shaped clamping plates has a first arc plate portion and a second arc plate portion, the first arc plate portion and the second arc plate portion are arranged in a staggered manner and not in the same plane, so that the second arc plate portion of the arc-shaped clamping plate can be juxtaposed and stacked with the first arc plate portion of another arc-shaped clamping plate behind; each of the first arc plate portions has the first column shaft, and each of the second arc plate portions has the second column shaft.

[0006] In an embodiment of the present invention, a retracted arc surface is respectively recessed on the outer side edge of each of the first arc plate portions, and the elastic ring is respectively buckled on each of the retracted arc surfaces.

[0007] In an embodiment of the present invention, an extension section is provided on the inner side surface of the base, the circular groove hole penetrates the extension section, and the extension section is arranged in the circular through hole.

[0008] In an embodiment of the present invention, an internal thread is provided in the circular through-hole, an external thread is provided on the extension section, and the base is screwed into the circular through-hole with the extension section, so that the base is fixed in the receiving groove.

[0009] In an embodiment of the present invention, a lug is provided on the periphery of the base, the lug is arranged in the receiving groove, and a screw is used to lock the lug from the inner side of the fork, so that the base is fixed in the receiving groove.

[0010] In an embodiment of the present invention, a screw hole is provided on the outer side of the fork corresponding to the periphery of the base, and a screw is used to tighten the periphery of the base through the screw hole, so that the base is fixed in the receiving groove.

[0011] In an embodiment of the present invention, a conical portion is provided at the front end of the enlarged end.

[0012] In an embodiment of the present invention, an outer ring rib is provided on the outer periphery of the circular groove of the base, and a cover rib is provided on the inner periphery of the cover opening of the shaft cover. The cover rib is forced to pass through the outer ring rib, so that the shaft cover is pivotally integrated with the base rotatably.

[0013] In an embodiment of the present invention, a chamfered edge is further provided on the inner arc edge of the side of each of the first arc plate portions corresponding to the first column shaft.

[0014] With the above structure, the substantial effect of quickly assembling the quick-release group can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of the prior art quick-release group and wheel assembly;

[0016] Figure 2 is a perspective view of the prior art quick-release group;

[0017] Figure 3 is an exploded perspective view of the quick-release group of the present invention assembled on the fork;

[0018] Figure 4 is a schematic cross-sectional view of the enlarged end of the present invention inserted into the movable clamping opening;

[0019] Figure 5 is a schematic plan view of the enlarged end of the present invention inserted into the movable clamping opening;

[0020] Figure 6 is a schematic cross-sectional view of the enlarged end of the present invention passing through the movable clamping opening;

[0021] Figure 7 is a schematic plan view of the enlarged end of the present invention passing through the movable clamping opening;

[0022] Figure 8 is a schematic cross-sectional view of the movable clamping opening of the present invention clamping the necking section;

[0023] Figure 9 Schematic plan view of the necking section of the movable clamping opening of the present invention

[0024] Figure 10 Schematic cross-sectional view of the movable clamping opening expanded by the rotating shaft cover of the present invention

[0025] Figure 11 Schematic cross-sectional view of the embodiment of the base fixing of the present invention

[0026] Figure 12 Schematic cross-sectional view of another embodiment of the base fixing of the present invention

[0027] In the figure:

[0028] 10 Fork; 101 Internal thread hole; 11 Quick-release wheel set; 12 Hub; 13 Quick-release set; 14 Shaft rod; 15 External thread; 16 Locking assembly; 17 Compression block; 18 Driving shaft; 19 Locking handle; 191 Eccentric part; 20 Fork; 201 Screw hole; 202 Screw; 21 Receiving groove; 22 Circular through hole; 221 Internal thread; 30 Clamping assembly; 31 Base; 311 Outer ring rib; 312 Lug; 313 Screw; 32 Circular groove; 321 Strip groove; 322 Inner ring rib; 33 Extension section; 331 External thread; 34 Circular slot hole; 35 Arc-shaped clamping plate; 351 First arc plate part; 352 Second arc plate part; 353 First column shaft; 354 Second column shaft; 355 Retreating arc surface; 356 Chamfer edge; 36 Elastic ring; 37 Movable clamping opening; 38 Shaft cover; 381 Cover hole; 382 Rotating shaft groove; 383 Cover rib; 40 Quick-release set; 41 Shaft rod; 42 Necking section; 43 Enlarged end; 431 Tapered part; 44 Locking assembly. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited are not intended to limit the present invention.

[0030] Please refer to Figures 3 to 10, which includes: a fork of a bicycle 20, on the outer side of one end of which there is a receiving groove 21, and in the receiving groove 21 there is a horizontally arranged circular through hole 22; a clamping assembly 30, which includes: a base 31, which can be fixed in the receiving groove 21, on the outer side of the base 31 there is a circular groove 32, on the inner side of which there is an extension section 33 corresponding to the position of the circular through hole 22, in the center of the circular groove 32 there is a circular groove hole 34 penetrating the extension section 33, and the extension section 33 is assembled in the circular through hole 22, around the circular groove hole 34 in the circular groove 32 there are several strip-shaped grooves 321 arranged equidistantly in a radially outward direction; on the outer peripheral edge of the circular groove 32 of the base 31 there is an outer ring rib 311, and on the inner peripheral edge of the notch of the circular groove 32 there is an inner ring rib 322; several arc-shaped clamping plates 35 arranged equidistantly in a ring in the circular groove 32, each of the arc-shaped clamping plates 35 has a first arc plate portion 351 and a second arc plate portion 352, the first arc plate portion 351 and the second arc plate portion 352 are arranged in a staggered manner and not in the same plane, so that the second arc plate portion 352 of the arc-shaped clamping plate 35 can be juxtaposed and stacked with the first arc plate portion 351 of another arc-shaped clamping plate 35 assembled behind; each of the first arc plate portions 351 has a first column shaft 353 corresponding to the strip-shaped groove 321, the first column shaft 353 is slidably assembled in the strip-shaped groove 321, and the second arc plate portion 352 has a second column shaft 354 in a direction opposite to the first column shaft 353, and on the outer side edge of each of the first arc plate portions 351 there is a recessed arc surface 355; an elastic ring 36, which is respectively buckled on the recessed arc surface 355 on the outer side edge of each of the first arc plate portions 351, so that a movable clamping opening 37 that can be elastically contracted or expanded is formed in the center of the arc-shaped clamping plates 35 arranged in a ring, and the movable clamping opening 37 is in a normally clamped state under the elastic force of the elastic ring 36; and an axle cap 38, in the center of which there is a cap hole 381, around the cap hole 381 in the axle cap 38 there are several rotating shaft grooves 382 that can respectively correspond to the second column shafts 354, and on the inner peripheral edge of the notch of the axle cap 38 there is a cap rib 383, each of the second column shafts 354 is pivotally assembled in each of the rotating shaft grooves 382, and the cap rib 383 is forced to pass through the outer ring rib 311, so that the axle cap 38 is pivotally assembled with the base 31 in a rotatable manner, rotating the axle cap 38 can synchronously drive each of the arc-shaped clamping plates 35, so that each of the arc-shaped clamping plates 35 takes the second column shaft 354 as an axis, and the first column shaft 353 slides in the strip-shaped groove 321, and rotating the axle cap 38 to make the first column shaft 353 slide to the outer side direction of the strip-shaped groove 321 can make each of the arc-shaped clamping plates 35 resist the elastic force of the elastic ring 36 and expand the movable clamping opening 37; and a quick-release group 40, which has a shaft rod 41, at one end of the shaft rod 41 there are sequentially arranged a necking section 42 and an enlarged end 43, the diameter of the enlarged end 43 is larger than the aperture of the movable clamping opening 37 in the clamped state, and at the front end of the enlarged end 43 there is a tapered portion 431, and at the other end of the shaft rod 41 there is a locking assembly 44;Both ends of the fork 20 can be inserted through the shaft rod 41 of the quick-release assembly 40. The shaft rod 41 is inserted into the circular groove hole 34 from the inner side of the fork 20 having the circular through-hole 22 with the enlarged end 43, and the tapered portion 431 resists the elastic force of the elastic ring 36. At the same time, the first column shaft 353 slides along the strip-shaped groove 321 respectively, so that each of the arc-shaped clamping plates 35 opens outward with the second column shaft 354 as the axis, making the movable clamping opening 37 in an expanded state, so that the enlarged end 43 can pass through the movable clamping opening 37. The enlarged end 43 passes through the movable clamping opening 37 and can be placed in the cover hole 381. Then, the movable clamping opening 37 contracts and clamps the necking section 42 under the elastic force of the elastic ring 36, and the shaft rod 41 is tightened by the locking assembly 44; with the above structure, the substantial effect of rapid assembly is achieved.

[0031] The composition, function and effect of the present invention are described in detail as follows: Please refer to Figures 3 to 10As shown, the distance between the inner end of the strip-shaped groove 321 of the present invention and the center of the circular groove hole 34 is less than the distance between the outer end of the strip-shaped groove 321 and the center of the circular groove hole 34, that is, they are arranged in a radially outward direction; when the arc-shaped clamping plates 35 are assembled into the circular groove 32, in order to avoid the inner ring convex rib 322, they can be respectively inserted obliquely, and the first column shafts 353 are respectively assembled into the strip-shaped grooves 321, and the elastic rings 36 are respectively buckled on the respective retracted arc surfaces 355. The elastic force of the elastic ring 36 pushes the respective first column shafts 353 to the inner end of the strip-shaped groove 321, so that the movable clamping opening 37 is always in a clamped state. The arc angle of the retracted arc surface 355 makes the inner ring convex rib 322 resist against the outer edge of the second arc plate portion 352 of the arc-shaped clamping plate 35 when the elastic ring 36 is buckled, which can prevent the arc-shaped clamping plate 35 from accidentally disengaging from the circular groove 32 and achieve the effect of auxiliary positioning; and the first arc plate portion 351 and the second arc plate portion 352 of each arc-shaped clamping plate 35 are arranged in a staggered manner rather than in the same plane, so that the arc-shaped clamping plates 35 can be stacked side by side. On the one hand, it can increase the number of arc-shaped clamping plates 35 arranged in a ring. The more the number of arc-shaped clamping plates 35, the closer the formed movable clamping opening 37 is to a circular opening when clamping or expanding; on the other hand, the stacked arrangement of the arc-shaped clamping plates 35 can reduce the volume of the base 31 under the comparison of the same number of arc-shaped clamping plates 35. The tapered portion 431 of the shaft rod 41 can be set as a concave conical shape. When the tapered portion 431 passes through the inner arc edge of the arc-shaped clamping plate 35, the resistance of the enlarged end 43 is reduced and it is easy to push, and it has the effect of assisting in resisting the elasticity of the elastic ring 36 and saving effort and being easy to assemble; also, a chamfered edge 356 is further provided on the inner arc edge of the first arc plate portion 351 corresponding to the first column shaft 353, so that when the tapered portion 431 passes through the first arc plate portion 351, the frictional resistance between the chamfered edge 356 and the tapered portion 431 is reduced, and it has the effect of being easier to assemble; if the shaft rod 41 of the quick-release group 40 is assembled through the fork 20, when the tapered portion 431 of the enlarged end 43 is inserted into the movable clamping opening 37 (as shown in Figure 4 , Figure 5 ), pushing the shaft rod 41 and applying a force greater than the elastic force of the elastic ring 36 will cause each arc-shaped clamping plate 35 to swing outward with the second column shaft 354 as the axis (as shown in Figure 6 , Figure 7 ), that is, the first column shaft 353 slides along the strip-shaped groove 321 towards the outer end, and at the same time rotates the shaft cover 38 that pivotally groups the respective second column shafts 354. In this way, the movable clamping opening 37 will expand, allowing the enlarged end 43 of the shaft rod 41 to pass through the movable clamping opening 37 until the necking section 42 of the shaft rod 41 is located in the movable clamping opening 37. At this time, the elastic ring 36 is no longer pressed by an external force and elastically returns, making the movable clamping opening 37 return to the clamped state again (as shown in Figure 8 , Figure 9As shown, it can be understood that the first column shaft 353 slides inward along the strip-shaped groove 321, causing the movable clamping opening 37 to clamp the necking section 42. The diameter of the enlarged end 43 is greater than the aperture of the movable clamping opening 37 in the clamped state, so that the enlarged end 43 cannot retreat and disengage from the movable clamping opening 37. Finally, the locking component 44 presses the shaft rod 41 tightly against the side of the fork 20, eliminating the need to waste time assembling the shaft rod 41 by screwing it in one by one, achieving the practical effects of quick assembly and easy application of force.

[0032] Conversely, when disassembling the quick-release assembly 40 from the fork 20, the shaft cover 38 can be rotated to drive each of the arc-shaped clamping plates 35. The rotational force is greater than the elastic force of the elastic ring 36, and the rotational direction is used to push each of the first column shafts 353 to slide outward along the strip-shaped groove 321 (as Figure 10 shown), enabling each of the arc-shaped clamping plates 35 to swing outward with the second column shaft 354 as the axis, expanding the movable clamping opening 37. In this way, the enlarged end 43 of the shaft rod 41 can retreat through the movable clamping opening 37 and be withdrawn from the shaft rod 41, achieving the practical effect of quickly detaching from the fork 20. It should be noted that when rotating the shaft cover 38 to push the first column shaft 353 to move, the pushing direction of the first column shaft 353 should not be perpendicular to the groove direction of the strip-shaped groove 321, otherwise it will cause difficulties and non-smooth rotation of the shaft cover 38. Furthermore, for the fixing method of the base 31, a lug 312 can be provided on the periphery of the base 31. The lug 312 can also be arranged in the receiving groove 21 and cooperated with a screw 313 to lock the lug 312 from the inner side of the fork 20, so that the base 31 can be fixed in the receiving groove 21.

[0033] In addition, the fixing method of the base 31 of the present invention can also be implemented in the form of Figure 11 , Figure 12 as shown in Figure 11 . An internal thread 221 is provided in the circular through-hole 22, and an external thread 331 is provided on the extension section 33. The base 31 is screwed into the circular through-hole 22 with the extension section 33, so that the base 31 can be fixed in the receiving groove 21; as shown in Figure 12 , a screw hole 201 is provided on the fork 20 corresponding to the outer periphery of the base 31, and a screw 202 is used to press tightly against the periphery of the base 31 from the screw hole 201, so that the base 31 can be firmly fixed in the receiving groove 21 without rotating.

[0034] The above-described embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A quick-disassembly structure that can be quickly assembled, characterized in that, Comprising: A fork, on the outer side of one end of which there is a receiving groove, and in the receiving groove there is a horizontally arranged circular through hole; A clamping assembly, which includes: A base that can be fixed in the receiving groove, on the outer side of the base there is a circular groove, in the center of the circular groove there is a circular groove hole corresponding to the position of the circular through hole, and around the circular groove hole in the circular groove there are several strip-shaped grooves arranged equidistantly in a radially outward direction; Several arc-shaped clamping plates arranged equidistantly in a ring in the circular groove, each of the arc-shaped clamping plates has a first column shaft, the first column shaft slides in the strip-shaped groove, and the arc-shaped clamping plate has a second column shaft in the opposite direction to the first column shaft; An elastic ring that is buckled on the outer side edges of each of the arc-shaped clamping plates, so that a movable clamping opening is formed in the center of the arc-shaped clamping plates surrounded in a ring; And an axle cover, on the inner side of which there are several rotating shaft grooves, and each of the second column shafts is pivotally connected to each of the rotating shaft grooves respectively, and the axle cover is pivotally connected to the base integrally in a rotatable manner. Rotating the axle cover can synchronously drive each of the arc-shaped clamping plates, so that each of the arc-shaped clamping plates takes the second column shaft as an axis, and the first column shaft slides in the strip-shaped groove. When the first column shaft slides to the outer side direction of the strip-shaped groove, each of the arc-shaped clamping plates can resist the elastic force of the elastic ring, so that the movable clamping opening expands; And a quick-release assembly, which has a shaft rod, at one end of the shaft rod there are sequentially arranged a necking section and an enlarged end, the diameter of the enlarged end is larger than the aperture of the movable clamping opening in the constricted clamping state, and at the other end of the shaft rod there is a locking assembly; The two ends of the fork can penetrate through the shaft rod of the quick-release assembly, the shaft rod penetrates into the circular groove hole from the inner side of the fork with the enlarged end, and the enlarged end resists the elastic force of the elastic ring. At the same time, the first column shafts of each of the arc-shaped clamping plates slide outward along the strip-shaped groove respectively, so that each of the arc-shaped clamping plates opens outward with the second column shaft as an axis, and the movable clamping opening is in an expanded state, so that the enlarged end can pass through. After the enlarged end passes through the movable clamping opening, the movable clamping opening is clamped to the necking section by the elastic force of the elastic ring, and then the shaft rod is tightened by the locking assembly.

2. The quickly-assemblable and quickly-detachable structure according to claim 1, wherein Each of the arc-shaped clamping plates has a first arc plate portion and a second arc plate portion, the first arc plate portion and the second arc plate portion are arranged in a staggered manner and not in the same plane, so that the second arc plate portion of the arc-shaped clamping plate can be juxtaposed and stacked with the first arc plate portion of another arc-shaped clamping plate behind; Each of the first arc plate portions has the first column shaft, and each of the second arc plate portions has the second column shaft.

3. The quick-disassembly structure capable of being quickly assembled according to claim 2, characterized in that, On the outer side edges of each of the first arc plate portions, there is respectively recessed a retracted arc surface, and the elastic ring is respectively buckled on each of the retracted arc surfaces.

4. The quick-disassembly structure capable of being quickly assembled according to claim 1, wherein On the inner side surface of the base, there is an extension section, the circular groove hole penetrates through the extension section, and the extension section is assembled in the circular through hole.

5. The quickly-assemblable and quickly-detachable structure according to claim 4, characterized in that, The circular through hole is provided with internal threads, the extension section is provided with external threads, and the base is screwed to the circular through hole with the extension section, so that the base is assembled and fixed in the receiving groove.

6. The quickly-assemblable and quickly-detachable structure according to claim 1, wherein, On the periphery of the base, there is a lug, the lug is arranged in the receiving groove, and a screw is used to lock the lug from the inner side surface of the fork, so that the base is assembled and fixed in the receiving groove.

7. The quick-disassembly structure capable of being quickly assembled according to claim 1, characterized in that, On the fork, there is a screw hole corresponding to the outer side of the periphery of the base, and a screw is used to tighten the periphery of the base from the screw hole, so that the base is assembled and fixed in the receiving groove.

8. The quick-disassembly structure capable of being quickly assembled according to claim 1, wherein The front end of the enlarged end has a tapered portion.

9. The quickly-assemblable and quickly-detachable structure according to claim 1, wherein The base is provided with an outer ring convex rib on the outer peripheral edge of the circular groove, and the inner peripheral edge of the cover opening of the shaft cover is provided with a cover convex rib. The cover convex rib is forced to pass through the outer ring convex rib, so that the shaft cover is pivotally integrated with the base rotatably.

10. The quickly-assemblable and quickly-detachable structure according to claim 2, wherein, Each of the first arc plate portions is the same, and a chamfered edge is further provided on the inner arc edge of the side of the first column shaft.

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