Rotary support structure and trolley

Abstract

This invention provides a rotating support structure and a portable folding vehicle. The rotating support structure includes a lower support base with a first vertical through hole and a guide portion protruding from the top, the guide portion having several limiting structures; an upper rotating base with a second vertical through hole inside and a mating portion at the bottom that rotatably engages with the guide portion, the side of the mating portion having a clearance structure passing through the mating portion and the second vertical through hole; a connecting structure passing through the clearance structure; and a first safety mechanism on the upper rotating base for locking or unlocking the upper rotating base to the lower support base. When the connecting structure and the limiting structures are locked together, the upper rotating base is anti-rotation and limited; when the first safety mechanism is unlocked and the connecting structure and the limiting structures are disengaged or loosened, the upper rotating base can rotate freely. This rotating support structure is simple in structure, simplifies the locking and unlocking operation of the rotating support structure while controlling manufacturing costs, and improves the user experience of the folding vehicle.

Description

Technical Field

[0001] This invention relates to the field of portable vehicle technology, and particularly to a rotating support structure and a portable vehicle. Background Technology

[0002] The world today advocates energy conservation and emission reduction, and my country is undoubtedly a major country in bicycles and electric vehicles, with various types of bicycles, electric vehicles, and scooters being widely used. Folding bicycles, electric vehicles, and scooters are particularly suitable for personal or shared use and have become a very important type of portable vehicle.

[0003] Traditional folding bicycles have a complex rotating support structure for the handlebars, which increases manufacturing costs. Furthermore, locking and unlocking this structure is cumbersome and inconvenient, negatively impacting the user experience. In addition, integrating a vertical lift function into the rotating support structure further increases the structural complexity, thereby raising manufacturing costs and hindering the widespread adoption of folding bicycles. Summary of the Invention

[0004] This invention proposes a rotating support structure and a portable vehicle to solve the technical problems of the complex rotating support structure of traditional portable vehicles and the cumbersome operation of locking and unlocking the rotating support structure.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a rotary support structure, comprising:

[0007] The lower support base has a first vertical through hole inside, and a guide part is provided on the top of the lower support base. The guide part is provided with several limiting structures.

[0008] The upper rotating seat has a second vertical through hole inside, and the bottom of the upper rotating seat has a mating part that rotates with the guide part. The side of the mating part has a clearance structure that passes through the mating part and the second vertical through hole.

[0009] The connecting structure is inserted into the clearance structure;

[0010] The first safety mechanism, located on the upper rotating seat, is used to lock or unlock the upper rotating seat to the lower support seat;

[0011] When the connecting structure and the limiting structure are locked together, the upper rotating seat achieves anti-rotation limiting. When the first safety mechanism is unlocked and the connecting structure and the limiting structure are disconnected or loosened, the upper rotating seat can rotate freely.

[0012] Preferably, the guide portion is a guide protrusion ring located on the top surface of the lower support base and surrounding the first vertical through hole;

[0013] The limiting structure includes: a guide groove, which is arranged around the outer edge of the guide ring in the circumferential direction; and a plurality of limiting holes, which are arranged at intervals in the circumferential direction along the guide groove.

[0014] The mating part is a mating step located on the bottom surface of the upper rotating seat, surrounding and connecting to the second vertical through hole;

[0015] The clearance structure includes: an extension seat located on one side of the bottom of the upper rotating seat; and a clearance through hole located inside the extension seat and penetrating the mating step.

[0016] The connecting structure includes: a connecting latch, which passes through the clearance through hole, one end of the connecting latch being a mating end that mates with the guide groove, and the other end of the connecting latch opposite to the mating end being a pull-out end, the pull-out end extending out of the clearance through hole, and the mating end opposite to the pull-out end having a plug-in portion that matches the limiting hole; and a reset member, which is connected between the connecting latch and the extension seat.

[0017] When the plug-in part is locked into the limiting hole, the upper rotating seat achieves anti-rotation limiting. When the pull-out end is pulled to make the plug-in part exit and release the connection limiting hole, the upper rotating seat achieves free rotation through the mating part and the guide groove.

[0018] Preferably, the guide part is a guide hook located on the top surface of the lower support base and on one side of the first vertical through hole. The end of the guide hook extends away from the first vertical through hole and forms a guide groove with the top surface of the lower support base.

[0019] The limiting structure is a connecting hole located at the end of the guide hook;

[0020] The mating part includes: an arc-shaped guide groove, which is located at the bottom of the rotating seat and surrounds and connects to the second vertical through hole. The shape of the arc-shaped guide groove matches the shape of the guide hook.

[0021] The clearance structure is a clearance through groove located on the bottom side of the rotating seat and extending through the arc-shaped guide groove. The clearance through groove extends around the circumference of the arc-shaped guide groove. The shape of the clearance through groove matches the shape of the end of the guide hook. The bottom surface of the clearance through groove rotates and engages with the top surface of the guide slot.

[0022] The connection structure is a connecting screw, which includes a second nut part and a second screw part that are connected to each other. The second screw part passes through the clearance groove and is connected to the connecting hole.

[0023] When the second screw is tightened into the connecting hole until it abuts against the clearance groove, the upper rotating seat achieves anti-rotation limit. When the second screw is loosened from the connecting hole until it disengages from the clearance groove, the upper rotating seat achieves free rotation through the rotational engagement of the bottom surface of the clearance groove and the top surface of the guide slot.

[0024] Preferably, the three limiting holes are evenly spaced along the circumference of the guide groove, and the axial direction of each limiting hole points to the radial direction of the guide ring, and the angle between the line connecting the axis of adjacent limiting holes and the axis of the guide ring is 90 degrees.

[0025] Furthermore, the extension seat includes: a horizontal tube body, located on one side of the bottom of the upper rotating seat, with a clearance through hole formed inside the horizontal tube body, and a first internal thread provided on the inner wall of the clearance through hole; and a sealing nut, including a first nut portion and a first screw portion connected to each other, the first screw portion being hollow, the first nut portion having a clearance through hole penetrating the hollow inner side of the first screw portion, and the outer side of the first nut portion having a first external thread that mates with the first internal thread of the clearance through hole;

[0026] A limiting step is provided at the connection between the mating end and the pull-out end. The end of the pull-out end facing away from the mating end extends out of the first nut part through the clearance hole. The end of the pull-out end facing away from the mating end is provided with a second external thread.

[0027] The reset component is a reset spring sleeved on the pull-out end and abutting between the limiting step and the first nut portion;

[0028] The connecting latch also includes:

[0029] The ring-shaped part has a second internal thread on its inner wall that mates with the second external thread.

[0030] Furthermore, the second nut portion and the second screw portion are connected by a transition tapered surface;

[0031] The coordination department also includes:

[0032] Several limiting notches are spaced apart on the bottom outer wall of the rotating seat along the circumferential direction of the relief groove, and communicate with the relief groove to form a limiting hole whose shape matches the shape of the second nut part. The inner wall of the limiting hole is provided with a chamfered cone surface that matches the transition cone surface.

[0033] Preferably, the three limiting holes are evenly spaced along the circumference of the arc-shaped guide groove, and the angle between the line connecting the adjacent limiting holes and the axis of the rotating seat is 90 degrees.

[0034] Furthermore, the upper rotating seat is in the shape of a clamp with an opening on one side, and a pair of first clamping parts are formed on the open side of the upper rotating seat;

[0035] The rotating support structure also includes:

[0036] A clamping vertical tube is provided on one side of the clamping vertical tube. The clamping vertical tube passes through the first vertical through hole and the second vertical through hole. A pair of first clamping parts are respectively clamped on both sides of the corresponding deformation notch of the clamping vertical tube.

[0037] The lifting vertical rod is inserted into the inner hole of the clamping vertical tube, the first vertical through hole, and the second vertical through hole;

[0038] The first safety mechanism, located on the upper rotating seat, is used to adjust the size of the opening formed by a pair of first clamping parts, so that the pair of first clamping parts clamp or loosen the clamping vertical tube and squeeze or relax the deformation notch, thereby driving the first vertical perforation to press or loosen the lifting vertical rod to fix or adjust the height of the lifting vertical rod extending upward from the upper rotating seat, and driving the mating part to press or loosen the guide part to lock or unlock the upper rotating seat to the lower support seat.

[0039] Furthermore, the rotary support structure also includes:

[0040] The stem is mounted on top of the upper swivel seat, and a handlebar clamp is provided at one end of the stem.

[0041] The present invention also provides a portable vehicle, including a frame and the aforementioned rotating support structure, with a lower support mounted on the frame.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The rotating support structure provided by this invention has the advantage of simple structure. While controlling the manufacturing cost of folding bicycles, it simplifies the user's operation of locking and unlocking the rotating support structure, thus improving the user experience of folding bicycles. In addition, the rotating support structure provided by this invention integrates a vertical rod lifting function without excessively increasing the structural complexity of the folding bicycle, realizing dual limits for steering and lifting of the handlebars and other structures installed on the vertical rod. Attached Figure Description

[0044] To more clearly illustrate the technical solution proposed by this invention, the invention will be described in detail below with reference to embodiments and accompanying drawings. It should be understood that the embodiments and drawings described in the following detailed description and specification are merely some embodiments of this invention, and those skilled in the art can make changes to these drawings within the framework of this invention.

[0045] Figure 1 This is a three-dimensional structural schematic diagram of a first embodiment of the rotary support structure of the present invention;

[0046] Figure 2 This is an exploded structural diagram of a first embodiment of the rotary support structure of the present invention;

[0047] Figure 3 for Figure 2 A magnified schematic diagram of a portion of region A in the diagram;

[0048] Figure 4 This is a front view schematic diagram of an embodiment of the rotary support structure of the present invention;

[0049] Figure 5 for Figure 1 A cross-sectional view of the rotating support structure along the BB direction.

[0050] Figure 6 This is an exploded structural diagram of another embodiment of the rotary support structure of the present invention;

[0051] Figure 7 for Figure 6 A magnified schematic diagram of the local structure of region C in the diagram;

[0052] Figure 8 This is a cross-sectional structural schematic diagram of another embodiment of the rotary support structure of the present invention.

[0053] Figure 9 This is a three-dimensional structural diagram of a second embodiment of the rotary support structure of the present invention;

[0054] Figure 10 This is an exploded structural diagram of a second embodiment of the rotary support structure of the present invention;

[0055] Figure 11 for Figure 10 A magnified schematic diagram of the local structure of region D in the diagram;

[0056] Figure 12 This is a front view schematic diagram of a second embodiment of the rotary support structure of the present invention;

[0057] Figure 13 for Figure 9 A cross-sectional view of the rotating support structure along the EE direction.

[0058] Figure 14 This is a three-dimensional structural diagram of a third embodiment of the rotary support structure of the present invention;

[0059] Figure 15 This is an exploded structural diagram of Embodiment 3 of the rotary support structure of the present invention;

[0060] Figure 16 This is a front view schematic diagram of Embodiment 3 of the rotary support structure of the present invention;

[0061] Figure 17 for Figure 14 A cross-sectional view of the rotating support structure along the FF direction.

[0062] Figure 18 This is a three-dimensional structural diagram of the rotating support structure of the present invention assembled on a front fork, according to Embodiment 3.

[0063] Figure 19 This is a three-dimensional structural schematic diagram of one embodiment of the rotary support structure of the present invention (Example 4).

[0064] Figure 20 This is a three-dimensional structural schematic diagram of another embodiment of the rotary support structure of the present invention, which is shown in Embodiment 4.

[0065] The main markings in the attached figures are as follows:

[0066] 1. Lower support base; 11. First vertical through hole; 12. Guide part; 120. Limiting structure; 1201. Guide groove; 1202. Limiting hole; 1203. Connecting hole; 121. Guide protrusion ring; 122. Guide protrusion hook; 1221. Guide slot; 13. Second clamping part; 131. Adjusting screw hole;

[0067] 2. Upper rotating seat; 21. Second vertical through hole; 22. Mating part; 221. Mating step; 222. Arc-shaped guide groove; 23. Relief structure; 231. Extension seat; 2311. Horizontal tube body; 2312. Sealing nut; 23121. First nut part; 231211. Relief through hole; 231212. First external thread; 23122. First screw part; 232. Relief through hole; 2321. First internal thread; 233. Relief through groove; 2331. Limiting notch; 2332. Tapered hole; 23321. Chamfered conical surface; 24. First clamping part; 241. Adjustment through hole; 242. Guide arc surface; 25. Lifting guide block;

[0068] 3. Connection structure; 31. Connecting latch; 311. Mating end; 3111. Insertion part; 3112. Mating notch; 312. Pull-out end; 32. Reset part; 321. Reset spring; 322. First spring; 323. Second spring; 313. Limiting step; 314. Wrench part; 3141. Second internal thread; 315. Mating rod; 316. Mating sleeve; 3161. Sleeve part; 3162. Guide part; 3163. Mating hole; 33. Connecting screw; 331. Second nut part; 332. Second screw part; 333. Transition cone surface;

[0069] 4. First safety mechanism; 41. Adjusting rod; 42. Adjusting knob; 43. Tilting shaft; 44. Adjusting handle; 441. Eccentric hole; 442. Guide convex surface;

[0070] 5. Clamping the vertical pipe; 51. Deformation notch;

[0071] 6. Lifting vertical rod; 61. Lifting guide groove; 62. Damping sleeve; 63. Limit block;

[0072] 7. Second safety mechanism; 71. Locking screw;

[0073] 8. Stem; 81. Handlebar clamp;

[0074] 9. The third security agency;

[0075] 10. Front fork. Detailed Implementation

[0076] To make the technical problem to be solved, the technical solution and the beneficial effects of the present invention clearer, the following description is provided in conjunction with the appendix. Figure 1-20 The present invention will be further described in detail below with reference to the embodiments.

[0077] Please refer to the following: Figure 1-20 The rotary support structure provided by the present invention includes:

[0078] The lower support base 1 has a first vertical through hole 11 inside, and a guide part 12 is provided on the top of the lower support base 1. The guide part 12 is provided with several limiting structures 120.

[0079] The upper rotating seat 2 has a second vertical through hole 21 inside. The bottom of the upper rotating seat 2 has a mating part 22 that rotates with the guide part 12. The side of the mating part 22 has a clearance structure 23 that passes through the mating part 22 and the second vertical through hole 21.

[0080] The connecting structure 3 passes through the relief structure 23;

[0081] The first safety mechanism 4 is provided on the upper rotating seat 2 and is used to lock or unlock the upper rotating seat 2 to the lower support seat 1.

[0082] When the connecting structure 3 is locked to the limiting structure 120, the upper rotating seat 2 achieves anti-rotation limiting. When the first safety mechanism 4 is unlocked and the connecting structure 3 is disconnected from or loosened from the limiting structure 120, the upper rotating seat 2 achieves free rotation.

[0083] Please refer to the following: Figure 1-5 In one embodiment of the rotary support structure provided by the present invention, the guide part 12 is a guide protrusion 121 provided on the top surface of the lower support 1 and surrounding the first vertical through hole 11.

[0084] The limiting structure 120 includes:

[0085] A guide groove 1201 is provided around the outer edge of the guide ring 121 in the circumferential direction; a plurality of limiting holes 1202 are provided at intervals in the circumferential direction along the guide groove 1201.

[0086] The aforementioned mating part 22 is a mating step 221 located on the bottom surface of the upper rotating seat 2, surrounding and communicating with the second vertical through hole 21.

[0087] The yielding structure 23 includes:

[0088] Extension seat 231, which is provided on one side of the bottom of the upper rotating seat 2;

[0089] A clearance through hole 232 is provided inside the extension seat 231 and passes through the second vertical through hole 21.

[0090] Connection structure 3 includes:

[0091] A connecting latch 31 is inserted into the clearance through hole 232. One end of the connecting latch 31 is a mating end 311 that mates with the guide groove 1201. The other end of the connecting latch 31 opposite to the mating end 311 is a pull-out end 312. The pull-out end 312 extends out of the clearance through hole 232 at the end opposite to the mating end 311. The mating end 311 at the end opposite to the pull-out end 312 is provided with a plug-in part 3111 that matches the limiting hole 1202.

[0092] Reset member 32, which is connected between the connecting latch 31 and the extension seat 231.

[0093] When the insertion part 3111 is locked into the limiting hole 1202, the upper rotating seat 2 achieves anti-rotation limiting. When the pull-out end 312 is pulled to make the insertion part 3111 exit and release the connection limiting hole 1202, the upper rotating seat 2 can freely cooperate with the guide groove 1201 through the mating part 22, so that the upper rotating seat 2 can rotate freely along the guide protrusion ring 121 (guide part 12).

[0094] Please refer to the following: Figure 1-5 In a preferred embodiment of the first embodiment of the rotary support structure provided by the present invention, the limiting structure 120 includes three limiting holes 1202. The three limiting holes 1202 are evenly spaced along the circumference of the guide groove 1201, and the axial direction of each limiting hole 1202 points to the radial direction of the guide ring 121. The angle between the line connecting the axis of adjacent limiting holes 1202 and the axis of the guide ring 121 is 90 degrees, that is, the angle between the line connecting the axis of the two limiting holes 1202 located at both ends of the circumference of the guide groove 1201 and the axis of the guide ring 121 is 180 degrees.

[0095] Therefore, when the user pulls the pull-out end 312 to disengage the plug part 3111 and release the connection limiting hole 1202, force can be applied simultaneously to make the upper rotating seat 2 rotate along the guide protrusion ring 121 (guide part 12) through the mating part 22 and the guide groove 1201. By rotating the upper rotating seat 2 in both directions (left and right, i.e., clockwise or counterclockwise) until the plug part 3111 of the connecting latch 31 is engaged with the two limiting holes 1202 located at both ends of the circumferential direction of the guide groove 1201, the upper rotating seat 2 can be rotated to the left or right folding posture of 90 degrees to the left or right (matching the left and right folding postures of the folding bike respectively). By resetting the upper rotating seat 2 and rotating it until the plug part 3111 is engaged with the limiting hole 1202 located in the middle section of the guide groove 1201, the upper rotating seat 2 can be rotated to the initial use posture facing forward (matching the forward use posture of the folding bike).

[0096] Please refer to the following: Figure 1-5 In a preferred embodiment of the first embodiment of the rotary support structure provided by the present invention, the extension seat 231 includes:

[0097] The horizontal tube body 2311 is convex and extends laterally on one side of the bottom of the upper rotating seat 2. The interior of the horizontal tube body 2311 forms a clearance through hole 232, and the inner wall of the clearance through hole 232 is provided with a first internal thread 2321.

[0098] The sealing nut 2312 includes a first nut portion 23121 and a first screw portion 23122 that are connected to each other. The first screw portion 23122 is hollow. The first nut portion 23121 has a clearance through hole 231211 that passes through the hollow inner side of the first screw portion 23122. The outer side of the first nut portion 23121 has a first external thread 231212 that mates with the first internal thread 2321 of the clearance through hole 232.

[0099] The pull-out end 312 is rod-shaped and passes through the hollow inner hole of the first screw part 23122 and the clearance through hole 232 of the horizontal tube body 2311. The mating end 311 is cylindrical and coaxially connected with the pull-out end 312. A pair of mating notches 3112 are provided at intervals at the end of the mating end 311 away from the pull-out end 312. The shape of the solid part of the mating end 311 located between the pair of mating notches 3112 matches the shape of the guide groove 1201, so that the relative groove walls of the guide groove 1201 of the upper rotating seat 2 can slide and engage with the corresponding bottom surfaces of the pair of mating notches 3112 of the mating end 311, thereby realizing that the upper rotating seat 2 rotates along the guide protrusion ring 121 (guide part 12) through the mating part 22 and the guide groove 1201.

[0100] The insertion part 3111 is cylindrical and matches the limiting hole 1202, and is coaxially disposed at the end of the mating end 311 facing away from the pull-out end 312.

[0101] The connection between the mating end 311 and the pull-out end 312 forms a limiting step 313 that surrounds the pull-out end 312 circumferentially. The end of the pull-out end 312 facing away from the mating end 311 passes through the clearance hole 231211 and extends out of the first nut part 23121. The end of the pull-out end 312 facing away from the mating end 311 is provided with a second external thread.

[0102] The reset component 32 is a reset spring 321. The reset spring 321 is sleeved on the pull-out end 312 and passes through the hollow inner hole of the first screw part 23122 and the clearance through hole 232 of the horizontal tube body 2311. The reset spring 321 abuts between the limiting step 313 and the first nut part 23121.

[0103] The connecting latch 31 also includes:

[0104] The finger portion 314 is annular, and the inner wall of the finger portion 314 is provided with a second internal thread 3141 that mates with the second external thread. The finger portion 314 is screwed onto the second external thread of the pull-out end 312 that extends out of the first nut portion 23121, so that the user can touch and turn the pull-out end 312 of the connecting lock 31 by finger.

[0105] Please refer to the following: Figure 6-8 In another embodiment of the first embodiment of the rotary support structure provided by the present invention, the extension seat 231 also includes the above-mentioned horizontal tube body 2311 and sealing nut 2312, the pull-out end 312 is rod-shaped, and the pull-out end 312 is simultaneously inserted into the hollow inner hole of the first screw part 23122 and the clearance through hole 232 of the horizontal tube body 2311.

[0106] The mating end 311 includes:

[0107] The mating rod 315 is coaxially connected to the pull-out end 312, so that the two are integrated and form the main body of the connecting latch 31. The end of the mating rod 315 away from the pull-out end 312 serves as the aforementioned insertion part 3111. The insertion part 3111 (the end of the mating rod 315 away from the pull-out end 312) is cylindrical and matches the limiting hole 1202.

[0108] The connection between the mating rod 315 (matting end 311) and the pull-out end 312 forms a limiting step 313 that surrounds the pull-out end 312 circumferentially. The end of the pull-out end 312 facing away from the mating end 311 passes through the clearance hole 231211 and extends out of the first nut part 23121. The end of the pull-out end 312 facing away from the mating end 311 is provided with a second external thread.

[0109] The limiting step 313 (the connection between the mating end 311 and the pull-out end 312) extends into the hollow inner hole of the first screw part 23122.

[0110] The connecting latch 31 also includes:

[0111] The sliding sleeve 316 includes a sliding sleeve portion 3161 and a guide portion 3162 that abuts against one end of the sliding sleeve portion 3161. The guide portion 3162 has an arc shape that matches the shape of the guide groove 1201. The sliding sleeve 316 has a mating hole 3163 that passes through the guide portion 3162 and the sliding sleeve portion 3161. The shape of the mating hole 3163 matches the shape of the mating rod 315. The sliding sleeve 316 fits into the mating rod 315 through the mating hole 3163, so that the sliding sleeve 316 is fitted on the outside of the mating rod 315 near its insertion portion 3111.

[0112] The relative groove walls of the guide groove 1201 of the upper rotating seat 2 can slide and engage with the relative surfaces of the guide portion 3162 of the mating sleeve 316, thereby enabling the upper rotating seat 2 to rotate along the guide protrusion ring 121 (guide portion 12) through the engagement portion 22 and the guide groove 1201.

[0113] Reset component 32 includes:

[0114] The first spring 322 is sleeved on the mating rod 315 and abuts against the sliding sleeve 3161 and the first screw 23122 in the clearance through hole 232 of the horizontal tube body 2311.

[0115] The second spring 323 and the first spring 322 are sleeved on the pull-out end 312 and abut against the limiting step 313 and the first nut part 23121 in the hollow inner hole of the first screw part 23122.

[0116] Please refer to the following: Figure 9-13 In Embodiment 2 of the rotary support structure provided by the present invention, the difference between the rotary support structure and that in Embodiment 1 is as follows:

[0117] The guide part 12 is a guide hook 122 located on the top surface of the lower support 1 and on one side of the first vertical through hole 11. The end of the guide hook 122 extends away from the first vertical through hole 11 and forms a guide groove 1221 with the top surface of the lower support 1.

[0118] The aforementioned limiting structure 120 is a connecting hole 1203 located at the end of the guide hook 122.

[0119] The cooperating part 22 includes:

[0120] An arc-shaped guide groove 222 is located at the bottom of the rotating seat and surrounds and connects to the second vertical through hole 21. The shape of the arc-shaped guide groove 222 matches the shape of the guide hook 122.

[0121] The aforementioned clearance structure 23 is a clearance through groove 233 located on the bottom side of the rotating seat and extending through the arc-shaped guide groove 222. The clearance through groove 233 extends circumferentially around the arc-shaped guide groove 222. The shape of the clearance through groove 233 matches the shape of the end of the guide hook 122. The bottom surface of the clearance through groove 233 rotates and engages with the top surface of the guide slot 1221. At the same time, the bottom surface of the guide slot 1221 (i.e., the top surface of the lower support seat 1) rotates and engages with the top surface of the lower support seat 1.

[0122] The aforementioned connection structure 3 is a connecting screw 33. The connecting screw 33 includes a second nut portion 331 and a second screw portion 332 that are connected to each other. The second screw portion 332 passes through the clearance groove 233 and is connected to the connecting hole 1203.

[0123] When the second screw part 332 is tightened with the connecting hole 1203 until the second screw part 332 abuts against the clearance groove 233, the upper rotating seat 2 achieves anti-rotation limit, and at this time the upper rotating seat 2 is in a state of rotational locking with the lower support seat 1.

[0124] When the second screw part 332 is loosened from the connecting hole 1203 until the second screw part 332 disengages from the relief groove 233, the upper rotating seat 2 switches from the rotational locking state to the free rotation state. At this time, the upper rotating seat 2 can rotate and engage with the bottom surface of the relief groove 233 and the top surface of the guide slot 1221 under the drive of external force, so that the upper rotating seat 2 can rotate freely along the guide hook 122 (guide part 12).

[0125] Please refer to the following: Figure 9-13 In one embodiment of the second embodiment of the rotary support structure provided by the present invention, the second nut portion 331 and the second screw portion 332 are connected by a transition cone surface 333.

[0126] The cooperating part 22 also includes:

[0127] Several limiting notches 2331 are spaced apart on the bottom outer wall of the rotating seat along the circumferential direction of the relief groove 233, and the limiting notches 2331 are connected to the relief groove 233. The limiting notches 2331 and the relief groove 233 form a tapered hole 2332 whose shape matches the outer shape of the second nut part 331. The inner wall of the tapered hole 2332 (the inner wall of the limiting notch 2331) is provided with a chamfered tapered surface 23321 that cooperates with the transition tapered surface 333.

[0128] When the second screw part 332 is tightened with the connecting hole 1203 until the transition tapered surface 333 at the junction of the second screw part 332 and the second screw part 332 abuts against the limiting notch 2331 (tapered hole 2332) corresponding to the clearance through groove 233, the upper rotating seat 2 achieves anti-rotation limiting through the tapered fit between the tapered hole 2332 and the chamfered tapered surface 23321. At this time, the upper rotating seat 2 is in a state of rotational locking with the lower support seat 1.

[0129] When the second screw part 332 is loosened from the connecting hole 1203 until the second screw part 332 disengages from the clearance groove 233, the chamfered conical surface 23321 of the connecting screw 33 (connecting structure 3) disengages from the tapered hole 2332 of the upper rotating seat 2. At this time, the upper rotating seat 2 switches from the rotation locking state to the free rotation state.

[0130] Please refer to the following: Figure 9-13 In a preferred embodiment of the second embodiment of the rotary support structure provided by the present invention, the mating part 22 includes three tapered holes 2332. The three tapered holes 2332 are evenly spaced along the circumference of the arc-shaped guide groove 222, and the axial direction of each tapered hole 2332 points to the radial direction of the rotary seat. The angle between the line connecting the adjacent tapered holes 2332 and the axis of the rotary seat is 90 degrees, that is, the angle between the two limiting holes 1202 located at both ends of the arc-shaped guide groove 222 and the axis of the rotary seat is 180 degrees.

[0131] Please refer to the following: Figure 14-18 In Embodiment 3 of the rotary support structure provided by the present invention, the rotary support structure differs from that in Embodiments 1 and 2 in that:

[0132] The upper rotating seat 2 is in the shape of a clamp with one side open, and a pair of first clamping parts 24 are formed on the open side of the upper rotating seat 2.

[0133] The rotating support structure also includes:

[0134] A clamping vertical tube 5 is provided with a deformation notch 51 on one side of its top end. The clamping vertical tube 5 passes through the first vertical through hole 11 and the second vertical through hole 21. The top end of the clamping vertical tube 5 extends into the upper part of the first vertical through hole 11, and the bottom end of the clamping vertical tube 5 passes through the lower support seat 1 from the bottom end of the second vertical through hole 21 away from the upper rotating seat 2. A pair of first clamping parts 24 are respectively clamped on both sides of the top end of the clamping vertical tube 5 corresponding to the deformation notch 51.

[0135] The lifting rod 6 passes through the inner hole of the clamping vertical tube 5, the first vertical through hole 11, and the second vertical through hole 21. After the top end of the lifting rod 6 passes upward through the top opening of the clamping vertical tube 5, it passes upward through the top end of the first vertical through hole 11 away from the lower support seat 1 and exits the upper rotating seat 2. The bottom end of the lifting rod 6 passes downward through the clamping vertical tube 5 from the bottom end. The top end of the lifting rod 6 can be used to install the handlebars 8, seat post, and other structures of the portable bicycle.

[0136] The aforementioned first safety mechanism 4 is mounted on the upper rotating seat 2 and is used to adjust the size of the opening formed by a pair of first clamping parts 24 so that the pair of first clamping parts 24 clamp or loosen the clamping vertical tube 5 and deform the clamping vertical tube 5 to squeeze or loosen the deformation notch 51, thereby causing the diameter of the first vertical through hole 11 to shrink or expand, thereby driving the first vertical through hole 11 to press or loosen the lifting vertical rod 6 to fix or adjust the height of the lifting vertical rod 6 extending upward from the upper rotating seat 2.

[0137] Furthermore, while adjusting the size of the opening formed by the pair of first clamping parts 24, the first safety mechanism 4 also simultaneously drives the mating part 22 to press or release the guide part 12 by reducing or expanding the diameter of the first vertical through hole 11, so as to lock or unlock the upper rotating seat 2 to the lower support seat 1.

[0138] Please refer to the following: Figure 14-18 In a preferred embodiment of the rotating support structure provided by the present invention, the outer side (outer wall) of the lifting vertical rod 6 is provided with a lifting guide groove 61 extending along its axial direction, and the upper rotating seat 2 is provided with a lifting guide block 25 cooperating with the lifting guide groove 61 on the inner side (inner wall) of the top opening of the first vertical through hole 11.

[0139] Please refer to the following: Figure 14-18 In a more preferred embodiment of the rotating support structure provided by the present invention, a damping sleeve 62 is fitted around the lower outer side of the lifting rod 6. The damping sleeve 62 is placed between the lower outer side (outer wall) of the lifting rod 6 and the bottom inner side (inner wall) of the clamping vertical tube 5. When the first safety mechanism 4 adjusts the opening formed by the pair of first clamping parts 24 to make the pair of first clamping parts 24 loosen the clamping vertical tube 5, the damping sleeve 62 fitted around the lower outer side of the lifting rod 6 and the bottom inner side (inner wall) of the clamping vertical tube 5 are in frictional engagement. At this time, the user needs to apply a certain external force to push the lifting rod 6 to overcome the friction between the damping sleeve 62 and the clamping vertical tube 5 to complete the lifting action, so as to avoid the lifting rod 6 directly loosening and quickly sliding down when the first safety mechanism 4 is unlocked, causing its top structure to hit the rotating seat 2.

[0140] Please refer to the following: Figure 14-18In a more preferred embodiment of the rotating support structure provided by the present invention, a limiting block 63 is detachably installed on the outer side (outer wall) of the lifting vertical rod 6 by means of connecting screw 33. The limiting block 63 cooperates with the top wall of the upper rotating seat 2 to limit the upward stroke of the lifting vertical rod 6 and prevent the upward stroke of the lifting vertical rod 6 from exceeding the preset value.

[0141] Please refer to the following: Figure 1-5 In one common embodiment of the rotary support structure provided by the present invention, a pair of first clamping parts 24 are respectively provided with mutually matching adjustment through holes 241, and one of the first clamping parts 24 is provided with a guide arc surface 242 that is recessed relative to the first clamping part 24 and surrounds the adjustment through hole 241 on the opposite side of the other first clamping part 24.

[0142] The first safety mechanism 4 is an eccentric wheel mechanism. The eccentric wheel mechanism includes an adjusting rod 41 that passes through the corresponding adjusting through holes 241 of a pair of first clamping parts 24. The two ends of the adjusting rod 41 extend outward from the opposite sides of the pair of first clamping parts 24. An adjusting knob 42 is screwed to one end of the adjusting rod 41 away from the guide arc surface 242. A flip shaft 43 is screwed to the other end of the adjusting rod 41 that extends out of the guide arc surface 242. The bottom end of an adjusting handle 44 is hinged to the flip shaft 43 through an eccentrically set eccentric hole 441. The bottom end of the adjusting handle 44 has a guide convex surface 442 that matches the shape of the guide arc surface 242.

[0143] The bottom end of the adjusting handle 44 engages with the guide arc surface 242 via the guide convex surface 442. When the user moves the adjusting handle 44 in both directions, the bottom end of the adjusting handle 44 is driven to swing eccentrically in both directions around the flip axis 43 via the eccentric hole 441. This drives the bottom end of the adjusting handle 44 to flip in both directions around the guide arc surface 242 via the guide convex surface 442. It also drives the bottom end of the adjusting handle 44 to press towards the other first clamping part 24 or to loosen the guide arc surface 242 in the direction away from the other first clamping part 24. This causes the first clamping part 24 with the guide arc surface 242 to move along the adjusting rod 41 towards or away from the other first clamping part 24, so that the first safety mechanism 4 can adjust the size of the opening formed by the pair of first clamping parts 24.

[0144] Please refer to the following: Figure 1-5 In one common embodiment of the rotary support structure provided by the present invention, the lower support 1 is in the form of a clamp with one open side, and a pair of second clamping parts 13 are formed on the open side of the lower support 1.

[0145] The rotating support structure also includes:

[0146] The second safety mechanism 7 is provided on the lower support base 1 and is used to adjust the size of the opening formed by a pair of second clamping parts 13 so that the pair of second clamping parts 13 clamp or loosen the vertical tube 5, thereby fastening or loosening the lower support base 1 to the clamping vertical tube 5, which facilitates the assembly and disassembly of the rotating support structure.

[0147] Please refer to the following: Figure 1-5 In one common embodiment of the rotary support structure provided by the present invention, the second safety mechanism 7 is a locking screw 71 that passes between corresponding adjusting screw holes 131 of a pair of second clamping parts 13.

[0148] In another embodiment of the rotary support structure provided by the present invention, the structure and principle of the second safety mechanism 7 are similar to those of the first safety mechanism 4, and therefore will not be described again here.

[0149] Please refer to the following: Figures 19-20 In Embodiment 4 of the rotary support structure provided by the present invention, the rotary support structure differs from that in Embodiments 1 and 2 in that:

[0150] The rotating support structure also includes:

[0151] The stem 8 is installed on the top of the upper swivel seat 2, and one end of the stem 8 is provided with a handlebar clamp 81.

[0152] Please see Figure 20 In one embodiment of the rotating support structure provided by the present invention, the other end of the stem 8 relative to the handlebar clamp 81 is hinged to the top of the upper rotating seat 2 through a third safety mechanism 9. The third safety mechanism 9 is used to realize the flip locking and unlocking of the stem 8 and the upper rotating seat 2 so that the stem 8 can be safely adjusted to adjust the pitch angle.

[0153] The present invention also provides a portable vehicle (not shown in the figure), including a frame (not shown in the figure) and the above-mentioned rotating support structure, with the lower support seat 1 mounted on the frame.

[0154] In a preferred embodiment of the portable vehicle provided by the present invention, the portable vehicle can be a portable bicycle, electric vehicle, scooter, etc.

[0155] Please refer to the following: Figure 14-18 In one embodiment of the portable vehicle provided by the present invention, the portable vehicle adopts the rotary support structure in the above embodiment three. The clamping vertical tube 5 is installed on the top of the front fork 10 of the portable vehicle, and the top of the lifting vertical rod 6 is used to install the handlebar 8 of the portable vehicle. That is, the rotary support structure can simultaneously realize the rotation limit and lifting limit functions of the handlebar 8.

[0156] Please refer to the following: Figures 19-20In another embodiment of the portable vehicle provided by the present invention, the portable vehicle adopts the rotary support structure in the above embodiment four, without the need to set up the clamping vertical tube 5 and the lifting vertical rod 6, that is, the rotary support structure is only used to realize the rotation limit function of the handlebar 8.

[0157] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary support structure, characterized in that, include: The lower support base (1) has a first vertical through hole (11) inside, and a guide part (12) is provided on the top of the lower support base (1). The guide part (12) is provided with several limiting structures (120). The upper rotating seat (2) has a second vertical through hole (21) inside. The bottom of the upper rotating seat (2) has a mating part (22) that rotates with the guide part (12). The side of the mating part (22) has a clearance structure (23) that passes through the mating part (22) and the second vertical through hole (21). The connecting structure (3) is inserted into the clearance structure (23); The first safety mechanism (4) is located on the upper rotating seat (2) and is used to lock or unlock the upper rotating seat (2) to the lower support seat (1); When the connecting structure (3) is locked to the limiting structure (120), the upper rotating seat (2) achieves anti-rotation limiting. When the first safety mechanism (4) is unlocked and the connecting structure (3) is disconnected from the limiting structure (120) or loosened, the upper rotating seat (2) achieves free rotation.

2. The rotary support structure as described in claim 1, characterized in that, The guide part (12) is a guide protrusion (121) provided on the top surface of the lower support (1) and surrounding the first vertical through hole (11); The limiting structure (120) includes: a guide groove (1201) which is disposed around the outer edge of the guide ring (121) in the circumferential direction; and a plurality of limiting holes (1202) which are disposed at intervals in the circumferential direction along the guide groove (1201). The mating part (22) is a mating step (221) provided on the bottom surface of the upper rotating seat (2), surrounding and communicating with the second vertical through hole (21); The clearance structure (23) includes: an extension seat (231) located on one side of the bottom of the upper rotating seat (2); and a clearance through hole (232) located inside the extension seat (231) and penetrating the mating step (221). The connecting structure (3) includes: a connecting latch (31) passing through the clearance through hole (232), one end of the connecting latch (31) being a mating end (311) that cooperates with the guide groove (1201), the other end of the connecting latch (31) opposite to the mating end (311) being a pull-out end (312), the pull-out end (312) extending out of the clearance through hole (232) at one end away from the mating end (311), and the mating end (311) having a plug-in portion (3111) matching the limiting hole (1202) at one end away from the pull-out end (312); and a reset member (32) connected between the connecting latch (31) and the extension seat (231). When the plug-in part (3111) is locked into the limiting hole (1202), the upper rotating seat (2) achieves anti-rotation limiting. When the pull-out end (312) is pulled out to make the plug-in part (3111) exit and release the connection limiting hole (1202), the upper rotating seat (2) achieves free rotation through the cooperation of the mating part (22) and the guide groove (1201).

3. The rotary support structure as described in claim 1, characterized in that, The guide part (12) is a guide hook (122) located on the top surface of the lower support (1) and on one side of the first vertical through hole (11). The end of the guide hook (122) extends away from the first vertical through hole (11) and forms a guide groove (1221) with the top surface of the lower support (1). The limiting structure (120) is a connecting hole (1203) located at the end of the guide hook (122); The mating part (22) includes: an arc-shaped guide groove (222), which is disposed at the bottom of the rotating seat and surrounds and communicates with the second vertical through hole (21). The shape of the arc-shaped guide groove (222) matches the shape of the guide hook (122). The clearance structure (23) is a clearance through groove (233) provided on the bottom side of the rotating seat and passing through the arc-shaped guide groove (222). The clearance through groove (233) extends around the arc-shaped guide groove (222) in a circumferential direction. The shape of the clearance through groove (233) matches the shape of the end of the guide hook (122). The bottom surface of the clearance through groove (233) rotates and engages with the top surface of the guide slot (1221). The connecting structure (3) is a connecting screw (33), which includes a second nut part (331) and a second screw part (332) connected to each other. The second screw part (332) passes through the clearance groove (233) and is connected to the connecting hole (1203). When the second screw part (332) is tightened with the connecting hole (1203) until the second screw part (332) abuts against the relief groove (233), the upper rotating seat (2) achieves anti-rotation limit. When the second screw part (332) is loosened with the connecting hole (1203) until the second screw part (332) disengages from the relief groove (233), the upper rotating seat (2) achieves free rotation by rotating with the bottom surface of the relief groove (233) and the top surface of the guide slot (1221).

4. The rotary support structure as described in claim 2, characterized in that, The three limiting holes (1202) are evenly spaced along the circumference of the guide groove (1201), and the axial direction of each limiting hole (1202) points to the radial direction of the guide ring (121). The angle between the line connecting the center of adjacent limiting holes (1202) and the axis of the guide ring (121) is 90 degrees.

5. The rotary support structure as described in claim 2, characterized in that, The extension seat (231) includes: a horizontal tube body (2311) disposed on one side of the bottom of the upper rotating seat (2), the interior of the horizontal tube body (2311) forming the clearance through hole (232), the inner wall of the clearance through hole (232) being provided with a first internal thread (2321); and a sealing nut (2312) including a first nut part (23121) and a first screw part (23122) connected to each other, the first screw part (23122) being hollow, the first nut part (23121) being provided with a clearance through hole (231211) penetrating the hollow inner side of the first screw part (23122), and the outer side of the first nut part (23121) being provided with a first external thread (231212) that mates with the first internal thread (2321) of the clearance through hole (2322); A limiting step (313) is formed at the connection between the mating end (311) and the pull-out end (312). The end of the pull-out end (312) facing away from the mating end (311) passes through the relief hole (231211) and extends out of the first nut part (23121). The end of the pull-out end (312) facing away from the mating end (311) is provided with a second external thread. The reset component (32) is a reset spring (321) sleeved on the pull-out end (312) and abutting between the limiting step (313) and the first nut part (23121); The connecting latch (31) also includes: The ring portion (314) is annular, and the inner wall of the ring portion (314) is provided with a second internal thread (3141) that mates with the second external thread.

6. The rotary support structure as described in claim 3, characterized in that, The second nut portion (331) and the second screw portion (332) are connected by a transition conical surface (333); The mating part (22) also includes: Several limiting notches (2331) are spaced around the bottom outer wall of the rotating seat along the circumferential direction of the relief groove (233), and communicate with the relief groove (233) to form a limiting hole (1202) whose shape matches the shape of the second nut part (331). The inner wall of the limiting hole (1202) is provided with a chamfered cone surface (23321) that matches the transition cone surface (333).

7. The rotary support structure as described in claim 6, characterized in that, The three limiting holes (1202) are evenly spaced along the circumference of the arc-shaped guide groove (222), and the angle between the line connecting the adjacent limiting holes (1202) and the axis of the rotating seat is 90 degrees.

8. The rotary support structure according to any one of claims 1-7, characterized in that, The upper rotating seat (2) is in the shape of a clamp with an open side, and a pair of first clamping parts (24) are formed on the open side of the upper rotating seat (2); The rotary support structure also includes: A clamping vertical tube (5) is provided on one side of the clamping vertical tube (5). The clamping vertical tube (5) is inserted into the first vertical through hole (11) and the second vertical through hole (21). A pair of first clamping parts (24) are respectively clamped on both sides of the clamping vertical tube (5) corresponding to the deformation notch (51). The lifting vertical rod (6) is inserted into the inner hole of the clamping vertical tube (5), the first vertical through hole (11) and the second vertical through hole (21); The first safety mechanism (4) is used to adjust the size of the opening formed by the pair of first clamping parts (24) so ​​that the pair of first clamping parts (24) clamp or loosen the clamping vertical tube (5) and squeeze or relax the deformation notch (51), thereby driving the first vertical perforation (11) to press or loosen the lifting vertical rod (6) to fix or adjust the height of the lifting vertical rod (6) extending upward from the upper rotating seat (2), and driving the mating part (22) to press or loosen the guide part (12) to lock or unlock the upper rotating seat (2) to the lower support seat (1).

9. The rotary support structure according to any one of claims 1-7, characterized in that, Also includes: The stem (8) is installed on the top of the upper rotating seat (2), and one end of the stem (8) is provided with a handlebar clamp (81).

10. A portable vehicle, comprising a frame, characterized in that, It also includes a rotary support structure as described in any one of claims 1-9, wherein the lower support (1) is mounted on the frame.

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