CN109895914A - A kind of folding stand and folding two-wheel tricycle - Google Patents

Abstract

The present invention provides a kind of folding stand and use the folding two-wheel tricycle of the folding stand, it is related to folded bicycle technical field, folding stand includes the upper beam and underbeam of vertical front bar and rear bar disposed in parallel and horizontally-parallel setting, one end of upper beam and underbeam is articulated in rear bar by linkage interval, the other end of upper beam and underbeam is articulated on sliding sleeve by linkage interval, and sliding sleeve is slidably socketed in front bar；Lockable mechanism and pull ring are provided on the linkage of connection upper beam and sliding sleeve；Fixing sleeve is connected to supporting block in front bar, and supporting block is located at the lower section of underbeam, and pull rod is hinged in supporting block, and the other end of pull rod is articulated with the middle part of upper beam.Solve the problems, such as that operating process is complicated when folded bicycle folds or is unfolded in the prior art and volume after folding is not compact enough.

Description

A kind of folding stand and folding two-wheel tricycle

Technical field

The present invention relates to folded bicycle technical fields, more particularly to a kind of folding stand and use the folding of the folding stand Two-wheeled tricycle.

Background technique

Light collapsible vehicle is widely used in the world, with the development of science and technology, folded bicycle is more intended to letter at present Single light, easy to carry, due to these advantages, light collapsible vehicle is more and more concerned by people in recent years.Light-duty folding The folding of folded vehicle, mainly folds up front and back wheel, front and back wheel folds up the folding that key is vehicle frame, currently on the market The style of folding stand is relatively more, but after the vehicle frame folding of general light collapsible vehicle, and volume is still very big, cause storage and It carries very inconvenient, and operates during folding and unfolding more complex, cannot achieve fast folding or expansion.

Summary of the invention

For the above problem in the prior art, the present invention provides a kind of folding stands, solve and roll in the prior art The problem that operating process is complicated when folded vehicle folds or is unfolded and volume after folding is not compact enough.

In order to achieve the above object of the invention, The technical solution adopted by the invention is as follows:

There is provided a kind of folding stand comprising vertical front bar and rear bar disposed in parallel and the upper beam of horizontally-parallel setting And underbeam, one end of upper beam and underbeam are articulated in rear bar by linkage interval, the other end of upper beam and underbeam passes through hinge Chain mechanism interval is articulated on sliding sleeve, and sliding sleeve is slidably socketed in front bar；It is provided on the linkage of connection upper beam and sliding sleeve Lockable mechanism and pull ring；Fixing sleeve is connected to supporting block in front bar, and supporting block is located at the lower section of underbeam, is hinged with drawing in supporting block The other end of bar, pull rod is articulated with the middle part of upper beam.

Further, linkage includes the pipe socket part being fixedly connected with rear bar or sliding sleeve, and is cut with scissors with upper beam or underbeam The articulated section connect.

Further, pipe socket part includes casing, and casing is provided with perforative opening along its axial direction, on the casing for the two sides that are open It is provided with outwardly extending clamping plate.Opening is set on casing, by the clamping and release for the two sides clamping plate that is open come in adjusting sleeve pipe The size of diameter facilitates the installation and removal of casing and connected piece.

Further, articulated section includes the pivot hole through clamping plate, and the connecting tube that inner wall is screw thread is provided in pivot hole, The both ends of connecting tube are connected with threaded fastener, and axle sleeve is provided between threaded fastener and clamping plate.Connecting tube connects two pieces points The clamping plate opened, in the rundown process of threaded fastener and connecting tube, connecting tube furthers the distances of two clamping plates, makes the interior of casing Diameter becomes smaller and then clamps rear bar or sliding sleeve, achieves a fixed connection；Threaded fastener pushes against clamping plate by axle sleeve, makes spiral shell by axle sleeve Gap between line fastener and clamping plate is greater than the thickness of upper beam or underbeam, so that the upper beam or underbeam that are socketed on axle sleeve Can relative to axle sleeve flexible rotating, the structure that forms threaded fastener and connecting tube can either as articulated section pivot again Locking member of the energy as pipe socket part, simplifies structure, reduces costs, reduce failure rate.

Further, lockable mechanism includes the detent portion being set on upper beam, and be arranged on linkage and with lock Multiple lockholes of pin portion cooperation, lockhole are set in cambered surface.The cooperation of lockhole and lock pin is for limiting upper beam relative to front bar Rotation, the corresponding lock position of lockhole, make folding stand either unfolded state or folded state can be right Locking is answered, reliability is increased；Lockhole is set in cambered surface, make lock pin after pulling out lockhole can with upper beam rotation along Cambered surface is moved to next lockhole position, and cambered surface can resist lock pin without influencing lock pin as upper beam rotates always.

Further, detent portion includes the link block connecting with upper beam and the lock pin that is slidably connected on link block, lock pin On be socketed with spring.

Further, the lockpin hole passed through for lock pin is provided on link block and accommodates the spring eye of spring, spring eye with Lockpin hole is coaxially disposed and length is less than lockpin hole；The outer diameter of lock pin is less than the internal diameter of lockpin hole, is provided with edge in the middle part of lock pin Its block machine radially extended, spring are located between the bottom surface and block machine of spring eye.Gear when along axial pulling lock pin, on lock pin Platform squeezes spring, so that spring is generated deformation, after unclamping lock pin, lock pin automatic spring can be made lock pin front end enter lock by spring Locking in hole.

Further, lock pin is removably connected with knob far from one end of lockhole.Knob is held when pulling lock pin for bicyclist It holds, but will increase the outer diameter of lock pin simultaneously, being detachably connected for knob be inserted into lock pin can from spring eye one end during installation Later knob is installed again, improves the convenience of installation.

A kind of folding two-wheel tricycle comprising above-mentioned folding stand, the lower end connection front-wheel of front bar, upper end connection turn to Handle, the telescopic upper end of rear bar are connected with cushion, and bogie is fixedly connected on underbeam, and the front end of bogie is provided with chain conveyer machine The rear end of structure, bogie connects rear-wheel.

Further, damper is provided between bogie and folding stand.Drive is transmitted to by buffer of damper rear-wheel Vibration in moving frame improves the comfort of bicyclist.

The invention has the benefit that front bar, rear bar, upper beam, underbeam and pull rod constitute the structure of an overall linkage, make This folding stand rapidly can fold or be unfolded；When needing folding stand becoming folded state from expansion, it is only necessary to will lock Lock pin in locking mechanism is pulled out from lockhole, lifts pull ring, lock pin is in the extensive of spring after sliding sleeve is moved to the other end of front bar Automatically locking in the lockhole of another position is slid under multiple power effect；When needing to become unfolded state from folded state, lock is pulled Pin, sliding sleeve are moved down into the stopping of supporting block position by gravity automatically, and lock pin slides into locking in lockhole automatically；Whole operation letter It is single, quick, improve the convenience and practicability of this folding stand, unfolded state and folded state can locking, improve and use When safety and reliability.

Sliding sleeve is supported by supporting block and limits the moving distance of sliding sleeve, makes folding stand can be by during expansion It is accurately located, improves operation ease；Both ends, which are respectively hinged at the pull rod in supporting block and upper beam, makes folding stand form two A stable three-legged structure, increases the stability of folding stand；Pull rod is in energy during unfolding and folding of folding stand simultaneously Enough as the movement of sliding sleeve quickly struts or collapse the lower end of front bar, folding stand is made to be unfolded more abundant or collapse more Step up to gather.

Detailed description of the invention

Fig. 1 is folding stand unfolding state figure.

Fig. 2 is folding stand folded state diagram.

Fig. 3 is the schematic diagram of articulated section in linkwork.

Fig. 4 is the schematic diagram of lockable mechanism.

Fig. 5 is the sectional view in the direction A-A in Fig. 1.

Fig. 6 is the deployed configuration schematic diagram of folding two-wheel tricycle.

Fig. 7 is the foldable structure schematic diagram of folding two-wheel tricycle.

Wherein, 1, front bar；11, supporting block；2, rear bar；3, upper beam；4, underbeam；5, pull rod；6, linkage；61, pipe connects Portion；611, casing；612, it is open；613, clamping plate；62, articulated section；621, pivot hole；622, connecting tube；623, threaded fastener； 624, axle sleeve；7, sliding sleeve；8, lockable mechanism；81, detent portion；811, link block；812, lock pin；813, spring；814, it shakes hands； 82, lockhole；9, pull ring；101, front-wheel；102, steering handle；103, cushion；104, bogie；105, chain-drive mechanism；106, Rear-wheel；107, damper.

Specific embodiment

A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art, As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy See, all are using the innovation and creation of present inventive concept in the column of protection.

As shown in Figure 1 and Figure 2, which includes vertical front bar 1 and rear bar 2 disposed in parallel and horizontally-parallel sets One end of the upper beam 3 and underbeam 4 set, upper beam 3 and underbeam 4 is articulated in rear bar 2 by the interval of linkage 6, upper beam 3 and underbeam 4 other end is articulated on sliding sleeve 7 by the interval of linkage 6, and sliding sleeve 7 is slidably socketed in front bar 1, under being made by sliding sleeve 7 The equidistant movement synchronous with upper beam 3 of beam 4.Fixing sleeve is connected to supporting block 11 in front bar 1, and supporting block 11 is located at the lower section of underbeam 4, support Pull rod 5 is hinged on block 11, the other end of pull rod 5 is articulated with the side of the middle part bar 2 to the rear of upper beam 3.

Lockable mechanism 8 and pull ring 9 are provided on the linkage 6 of connection upper beam 3 and sliding sleeve 7.When 8 locking of lockable mechanism, Linkage 6 cannot be such that upper beam 3 rotates relative to sliding sleeve 7, and sliding sleeve 7 cannot also slide relative to front bar 1, upper beam 3, pull rod 5, Sliding sleeve 7 and front bar 1 form the three-legged structure of fixed locking, thus the unfolded state or folded state of fixed fold vehicle frame；Lock When locking mechanism 8 unlocks, upper beam 3 can be rotated relative to sliding sleeve 7, so as to which shape is unfolded from collapsed state in folding stand State is changed into folded state from unfolded state.Pull ring 9 is preferably pull ring screw, with the threaded hole on setting linkage 6 Connection facilitates lifting linkage 6, and pull ring screw is standard component, can reduce cost.

As shown in figs. 3 and 5, linkage 6 includes the pipe socket part 61 being fixedly connected with rear bar 2 or sliding sleeve 7, and with it is upper Beam 3 or the hinged articulated section 62 of underbeam 4.Pipe socket part 61 includes casing 611, and casing 611 is provided with perforative opening along its axial direction 612, i.e. the section of casing 611 is in C font, is provided with outwardly extending clamping plate 613 on the casing 611 for 612 two sides that are open.

Direction perpendicular to clamping plate face is provided with the through-hole through two clamping plates, which is pivot hole 621, in the pivot Connecting tube 622 is placed in axis hole 621, connecting tube 622 is the internal pipe fitting being threaded, and the length of the connecting tube 622 is small In the length of pivot hole 621, can be free to move axially in pivot hole 621 along it.The both ends of connecting tube 622 are connected with screw thread Fastener 623, the preferably interior hexagonal round head screw of threaded fastener 623, to facilitate installation.The round end and folder of threaded fastener 623 Axle sleeve 624 is provided between 613 lateral surface of plate, axle sleeve 624 is placed on threaded fastener 623.Clamping plate is pushed against by axle sleeve 624 613, threaded fastener 623 is tightened with connecting tube 622.Hinged upper beam 3 or underbeam 4 is placed on axle sleeve 624, axle sleeve 624 width is greater than upper beam 3 or the unilateral thickness of underbeam 4, threaded fastener 623 will not be squeezed in rundown process upper beam 3 or Underbeam 4 enables upper beam 3 or underbeam 4 swimmingly to rotate around axle sleeve 624.

It is provided with lockable mechanism 8 on the linkage 6 of connection sliding sleeve 7 and upper beam 3, due on the linkage 6 at this Need to open up lockhole 82, so the opening 612 at this in linkage 6 is narrower than the opening 612 on the linkage 6 at other places, To provide the entity portion for opening up lockhole 82.As shown in figure 5, the sectional view of lower end illustrates the Link chain device provided with lockable mechanism 8 The sectional view of structure 6, upper end are the sectional view of the linkage 6 of not set lockable mechanism 8.

Lockable mechanism 8 includes the detent portion 81 that is set on upper beam 3, and is arranged on linkage 6 and and detent portion Multiple lockholes 82 of 81 cooperations, linkage 6 is arranged in towards the side of lock pin 812 in lockhole 82, and the face that lockhole 82 is arranged is Cambered surface, the cambered surface are the end face of clamping plate 613, and cambered surface is round and smooth, its end face after being drawn out lockhole 82 of lock pin 812 is facilitated to connect with cambered surface It touches and is slided along cambered surface to next lockhole 82；Circumferentially there are two lockhole 82 in cambered surface, the lockhole 82 positioned at top is right The unfolded state for answering locking folding stand, positioned at the folded state of the corresponding locking folding stand of following lockhole 82.

As shown in Figure 4, Figure 5, detent portion 81 includes the link block 811 connecting with upper beam 3 and is slidably connected to link block 811 On lock pin 812, be socketed with spring 813 on lock pin 812.Specifically, the lock passed through for lock pin 812 is provided on link block 811 Pin hole and the spring eye for accommodating spring 813, spring eye and lockpin hole are coaxially disposed and length is less than lockpin hole, spring eye and lock pin Hole intersection forms a step, which is the bottom surface of spring eye.The position of lockhole 82 and folding stand are being unfolded and are rolling over The location of lock pin 812 is corresponding under folded two states, i.e., always coaxial with lock pin 812.

The outer diameter of lock pin 812 is less than the internal diameter of lockpin hole, and lock pin 812 is made to be free to slide axially along lockpin hole. The middle part of lock pin 812 is provided with the block machine radially extended, and spring 813 is located between the bottom surface and block machine of spring eye.Lock pin 812 pass through from spring eye one end and lockpin hole and have been connected through a screw thread knob 814, and 814 end of shaking hands is provided with barb, should fall Hook is placed in the strip-shaped hole on upper beam 3, and the scope of activities of knob 814 is limited by strip-shaped hole.

It forms as shown in Figure 1, upper beam 3 and underbeam 4 are all made of the fixation of two boards part relative spacing, is connect with linkage 6 When, two boards part is socketed on respectively on the axle sleeve 624 at 622 both ends of connecting tube, lockable mechanism 8 be located at upper beam 3 two boards part it Between, i.e. the both ends of link block 811 are fixedly connected on the inside of 3 two boards part of upper beam, can enhance the whole of folding stand appearance Cleanliness, and linkage 6 and lockable mechanism 8 can be protected by damaged in collision by two boards part.

Upper beam 3 and underbeam 4 and the linkage 6 of 2 junction of rear bar are stationarily connected in rear bar 2, upper beam 3 and underbeam 4 The one end connecting with sliding sleeve 7 can follow sliding sleeve 7 to slide axially along front bar 1.Sliding sleeve 7 slides into the lower end of front bar 1 and passes through Supporting block 11 limits, and supporting block 11 includes pipe socket part identical with linkage 6, and a pivot is fixed on the clamping plate of pipe socket part Axis, a splaying of pull rod 5 are socketed on the pivot between two clamping plates, and another splaying of pull rod 5, which is socketed on, is fixed on upper beam 3 On pivot between two boards part.

Lock pin 812 when sliding sleeve 7 is slided into supporting block 11, under the restoring force effect of spring 813, on lockable mechanism 8 Front end slide into the lockhole 82 of the position corresponding position, the one end for connecting upper beam 3 with sliding sleeve 7 can not relatively rotate again, Prevent sliding sleeve 7 from sliding relative to front bar 1, so that upper beam 3, pull rod 5, sliding sleeve 7 and front bar 1 form the triangle knot of fixed locking Structure secures the distance between front bar 1 and rear bar 2, also just secures the position of underbeam 4, and then fix entire folding stand Form stablizes folding stand and keeps unfolded state.

Once lockable mechanism 8 unlocks, the front end of lock pin 812 is exited from lockhole 82, the hinged place energy of upper beam 3 and sliding sleeve 7 Enough to relatively rotate, sliding sleeve 7 can be slided relative to front bar 1, so that the rotational freedom of all hinged places is opened on this folding stand, By the characteristics of motion of link mechanism it is found that as the angle between upper beam 3 and sliding sleeve 7 becomes smaller, while sliding sleeve 7 is along in front bar 1 It rises, 7 synchronous drive upper beam 3 of sliding sleeve and underbeam 4 rise, and since the length of upper beam 3 and underbeam 4 is fixed, will pull rear bar 2 to front bar 1 direction is mobile, while the certain pull rod 5 of length limits the distance between 1 lower end of front bar and upper beam 3, and then with the cunning of sliding sleeve 7 Behind the upper end for moving front bar 1, entire vehicle frame is just folded into state shown in Fig. 2.

When needing to become from the unfolded state of Fig. 1 the folded state of Fig. 2, one hand of bicyclist is pulled toward 2 side of rear bar Lock pin 812, lock pin 812 are removed from lockhole 82, while the block machine on lock pin 812 squeezes spring 813 and generates deformation, lockable mechanism 8 unlocks, the another hand of bicyclist up lift pull ring 9, and upper beam 3 is rotated around the hinge joint of itself and sliding sleeve 7, then unclamp lock Pin 812, it is the end face of cambered surface and with upper beam that the end face of lock pin 812, which is pushed against under the rebound effect of spring 813 on clamping plate 613, 3 rotation and slided along cambered surface, sliding sleeve 7 is moved to the top of front bar 1, and folding stand folds completely, and lock pin 812 is also just just Slide into locking in the lockhole 82 of lower section.

When needing to become from the folded state of Fig. 2 the unfolded state of Fig. 1, lock pin 812, locking structure are equally pulled backward 8 unlocks, slide downward, the stopping at the arrival supporting block 11 of sliding sleeve 7 under the effect of gravity of sliding sleeve 7, and 3 He of upper beam is driven simultaneously Underbeam 4 moves down and opposite hinged place rotates, when sliding sleeve 7 and supporting block 11 contact, lock pin 812 slide into above lockhole 82 in lock Only, folding stand is made to be stably held in unfolded state always.

As shown in Figure 5, Figure 6, a kind of folding two-wheel tricycle comprising above-mentioned folding stand, before the lower end connection of front bar 1 Wheel 101, upper end connect steering handle 102, and the telescopic upper end of rear bar 2 is connected with cushion 103, is fixedly connected with bogie on underbeam 4 104, bogie 104 is arranged in parallel with underbeam 4, and the front end of bogie 104 is provided with chain-drive mechanism 105, after bogie 104 End connection rear-wheel 106, chain-drive mechanism 105 include foot pedal and two sprocket wheels that the rotation of foot pedal is transmitted to rear-wheel 106 And the chain with sprocket engagement.Damper 107 is provided between bogie 104 and the underbeam 4 of folding stand.

Claims (10)

1. a kind of folding stand, which is characterized in that including vertical front bar (1) disposed in parallel and rear bar (2) and horizontally-parallel One end of the upper beam (3) and underbeam (4) of setting, the upper beam (3) and the underbeam (4) is hinged by linkage (6) interval In on the rear bar (2), the other end of the upper beam (3) and the underbeam (4) is articulated with sliding sleeve by linkage (6) interval (7) on, the sliding sleeve (7) is slidably socketed on the front bar (1)；

It connects and is provided with lockable mechanism (8) and pull ring on the linkage (6) of the upper beam (3) and the sliding sleeve (7) (9)；

Fixing sleeve is connected to supporting block (11) on the front bar (1), and the supporting block (11) is located at the lower section of the underbeam (4), institute It states and is hinged on supporting block (11) pull rod (5), the other end of the pull rod (5) is articulated with the middle part of the upper beam (3).

2. folding stand according to claim 1, which is characterized in that the linkage (6) includes and the rear bar (2) Or the pipe socket part (61) that the sliding sleeve (7) is fixedly connected, and the articulated section hinged with the upper beam (3) or the underbeam (4) (62)。

3. folding stand according to claim 2, which is characterized in that the pipe socket part (61) includes casing (611), described Casing (611) is provided with perforative opening (612) along its axial direction, is arranged in the described sleeve pipe (611) of described opening (612) two sides There are outwardly extending clamping plate (613).

4. folding stand according to claim 3, which is characterized in that the articulated section (62) includes running through the clamping plate (613) pivot hole (621) is provided with the connecting tube (622) that inner wall is screw thread, the connecting tube in the pivot hole (621) (622) both ends are connected with threaded fastener (623), are provided between the threaded fastener (623) and the clamping plate (613) Axle sleeve (624).

5. folding stand according to claim 1, which is characterized in that the lockable mechanism (8) includes being set on described Detent portion (81) on beam (3), and the multiple locks for being arranged on the linkage (6) and cooperating with the detent portion (81) Hole (82), the lockhole (82) are set in cambered surface.

6. folding stand according to claim 5, which is characterized in that the detent portion (81) includes and the upper beam (3) The link block (811) of connection and the lock pin (812) being slidably connected on the link block (811) are socketed on the lock pin (812) There are spring (813).

7. folding stand according to claim 6, which is characterized in that be provided on the link block (811) for the lock The spring eye of lockpin hole and the receiving spring (813) that pin (812) passes through, the spring eye and the lockpin hole are coaxially disposed And length is less than the lockpin hole；The outer diameter of the lock pin (812) is less than the internal diameter of the lockpin hole, the lock pin (812) Middle part is provided with the block machine radially extended, and the spring (813) is located between the bottom surface and the block machine of the spring eye.

8. folding stand according to claim 7, which is characterized in that the lock pin (812) is far from the lockhole (82) One end is removably connected with knob (814).

9. a kind of folding two-wheel tricycle, which is characterized in that including any folding stand of claim 1~8, before described Lower end connection front-wheel (101), upper end connection steering handle (102) of bar (1), the telescopic upper end of the rear bar (2) are connected with seat It pads (103), is fixedly connected bogie (104) on the underbeam (4), the front end of the bogie (104) is provided with chain conveyer machine The rear end of structure (105), the bogie (104) connects rear-wheel (106).

10. folding two-wheel tricycle according to claim 9, which is characterized in that the bogie (104) and the folding Damper (107) are provided between vehicle frame.