CN102991563B

CN102991563B - Foldable steering wheel

Info

Publication number: CN102991563B
Application number: CN201210465856.7A
Authority: CN
Inventors: 黄崇华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-16
Filing date: 2012-11-16
Publication date: 2015-07-08
Anticipated expiration: 2032-11-16
Also published as: CN102991563A

Abstract

The invention provides a foldable steering wheel. The foldable steering wheel comprises a rotating shaft of the steering wheel, a handle sleeve of the steering wheel and a hub connected between the handle sleeve and the rotating shaft, wherein the handle sleeve comprises a plurality of circumference chain sections which are sequentially connected to form a sealed ring; the head end and the tail end of each circumference chain section are respectively hinged with the adjacent circumference chain section; a circumference channel is arranged inside each circumference chain section; the circumference channels of all the circumference chain sections are communicated to form an annular channel; and a movable locking device is arranged inside the annular channel. The foldable steering wheel provided by the invention can be used for unlocking the steering wheel, can be released by being folded, provides a certain space for a driver squeezed between a seat and the steering wheel in a traffic accident, and gets precious time for self-aid or rescue of the driver.

Description

Folding bearing circle

Technical field

The present invention relates to automotive field, be specifically related to a kind of bearing circle, especially a kind of folding bearing circle.

Background technology

Bearing circle is the vitals of automobile, and its steadiness and fecundity ensure that the safety of vehicle drive.But, when automobile meets with an accidet, such as, when colliding automobile cab or driving engine distortion, vehicle seat moves forward, and moves after driving engine, chaufeur is usually stuck between vehicle seat and bearing circle and is difficult to move, move the necessary cut direction dish of chaufeur, so then needing special instrument or need fire fighter to have implemented, is which kind of mode cut direction dish all can delay the much time by, delay the therapeutic time of chaufeur, affect the life or health safety of chaufeur.

Summary of the invention

The object of this invention is to provide a kind of folding bearing circle, to solve existing bearing circle not foldable or the problem that needs cutting damage to be out of shape or to disassemble.

For this reason, the present invention proposes a kind of folding bearing circle, and described folding bearing circle comprises: the rotating shaft of bearing circle, the grip of bearing circle and the wheel hub be connected between described grip and rotating shaft,

Described grip comprises: multiple circumferential chain link being in turn connected to form closed circle, the head end of each circumferential chain link and tail end are hinged with adjacent circumferential chain link respectively, the inside of each circumferential chain link has circumferential passageway, and the circumferential passageway of all circumferential chain links is communicated with formation annular arrangement passage; Movable locking device is provided with in described annular arrangement passage.

Further, described wheel hub at least comprises: be disposed radially and form first wheel and second wheel hub of angle;

Described first wheel comprises: inside first radial chain link and with described first inside radial chain link by hinged the first outer radial chain link of the first radial hinge, inside described first, radial chain link and described first outer radial chain link inside all have radial passage; The radial passage of described first outer radial chain link is communicated with the radial passage of radial chain link inside described first, and the radial passage of described first outer radial chain link and described annular arrangement channel connection;

Described first wheel also comprises: the first radial location pin and the first tractive unit, described first radial location pin and described first tractive unit flexibly connect, inside the radial passage and described first that described first radial location pin and described first tractive unit are all movably arranged on described first outer radial chain link radial chain link radial passage in, described first radial location pin is positioned at the outside of described first tractive unit;

Described second wheel hub comprises: inside second radial chain link and with described second inside hinged the second outer radial chain link of radial chain link, inside described second, the hinged and described second outer radial chain link inside of radial chain link all has radial passage, inside described second, the radial passage of radial chain link and the radial passage of described second outer radial are interconnected, further, the radial passage of described second outer radial is communicated with described torus section;

Described second wheel hub also comprises: the second radial location pin and the second tractive unit, inside described second radial chain link radial passage in be provided with the second tractive unit, described second radial location pin and described second tractive unit flexibly connect, inside the radial passage and described second that described second radial location pin and described second tractive unit are all movably arranged on described second outer radial chain link radial chain link radial passage in, described second radial location pin is positioned at the outside of described second tractive unit;

Described circumferential chain link at least comprises: the first circumferential chain link crossing with described first outer radial chain link, and crossing with described second outer radial chain link with second week to chain link, be provided with the first circumferential passageway in described first circumferential chain link, described second week is provided with the second circumferential passageway in chain link;

Be provided with the annular lock pin of multiple mutual extruding in described annular arrangement passage, each described annular lock pin is slidably disposed in described annular arrangement passage, and multiple described annular lock pin is connected to form the annular with opening; The circumferential lengths of described opening adds that the circumferential lengths sum of multiple described annular lock pin equals the length of described annular arrangement passage;

Described opening is first opening or the second opening that can mutually switch, described first opening is positioned at described first circumferential passageway and is positioned at the intersection, radial passage of described first circumferential passageway and described first outer radial chain link, described second opening is positioned at described second circumferential passageway and is positioned at the intersection, radial passage of described second circumferential passageway and described second outer radial chain link, described first radial location pin can insert and depart from described first opening, described second radial location pin can insert and depart from described second opening, described second radial location pin and described second tractive unit and described first radial location pin and described first tractive unit synchronizing moving,

When described first radial location pin is arranged in the position of inserting described first opening, described second radial location pin is positioned at the position departing from described second opening, each described annular lock pin is connected across in adjacent two circumferential passageways in described annular arrangement passage, inside the radial passage and described first that described first tractive unit is connected across described first outer radial chain link radial chain link radial passage in, inside the radial passage and described second that described second tractive unit is connected across described second outer radial chain link radial chain link radial passage in, described folding bearing circle is in the lock state,

When described first radial location pin is positioned at the position departing from described first opening, described second radial location pin is positioned at the position of inserting described second opening, each described annular lock pin is only arranged in a described circumferential passageway of described annular arrangement passage, described first tractive unit is only arranged in the radial passage of radial chain link inside described first, described second tractive unit is only arranged in the radial passage of radial chain link inside described second, and described folding bearing circle is in collapsible state.

Further, the shape of each circumferential chain link is identical with structure, the shape of the circumferential passageway of each circumferential chain link is equal with length, the width W of described first radial location pin equals the twice of the stroke of described each annular lock pin, more than the number of described chain link two of the number of described annular lock pin, except the first circumferential chain link and second week are to except the described annular lock pin in chain link, the length of each described annular lock pin equals the length of the circumferential passageway of described each circumferential chain link.

Further, described first radial location pin is connected by using flexible wire with described first tractive unit, described using flexible wire is connect line segment between the two endpoints, the first end of described using flexible wire is A point, described A point is positioned at the inside of described first radial location pin, second end of described using flexible wire is B point, described B point is positioned at the inside of described first tractive unit, the inside of described first radial location pin is provided with the first open slot holding described using flexible wire and rotate, the inside of described first tractive unit is provided with the second open slot holding described using flexible wire and rotate,

Described first open slot and the vertical described first radial hinge of described second open slot,

Described first radial location pin has the first contact surface, and described first tractive unit has the second contact surface, described first contact surface adjacent with described second contact surface and faced by, described first contact surface and described second contact surface are semi-cylindrical face,

When described folding bearing circle is in the lock state, described first radial location pin and described first tractive unit are positioned on straight line, described using flexible wire is straight line, and described first contact surface and described second contact surface fit, described using flexible wire and described first contact surface intersect at C point, described using flexible wire and described second contact surface intersect at D point, the center of circle of described first contact surface is described A point, the radius of described first contact surface is the straight-line distance of A point and C point, described first open slot with described A point for the center of circle, and described first open slot extends to described first contact surface, and the opening of described first open slot is at least 90 degree,

The center of circle of described second contact surface is described B point, the radius of described second contact surface is the straight-line distance of B point and D point, described second open slot is with described B point for the center of circle, and described second open slot extends to described second contact surface, and the opening of described second open slot is at least 90 degree.

Further, described first circumferential chain link and the first outer radial chain link are integral type structure.

Further, comprise the first circumferential chain link identical to the circumferential length of each circumferential chain link of chain link with second week, the shape of each circumferential chain link is identical, each circumferential chain link is by circumferential hinge, the shape of the circumferential passageway of each chain link is identical with length, the vertical described annular arrangement passage of described circumferential bearing pin and described annular lock pin, each circumferential chain link comprises: circular arc chain link main body, the chain link head end be connected respectively with the two ends of described chain link main body and chain link tail end, described chain link head end has picking up the ears of the circular arc of circumferentially stretching out, described chain link tail end has the boss with described circular arc of picking up the ears to be connected, described chain link main body, described pick up the ears identical with the circular arc radian of described boss, described picking up the ears is provided with the first axis hole, described boss is provided with the second axis hole, each described circumferential passageway is arranged in a described chain link main body and each described boss, the minimum spacing of described circumferential passageway and described first axis hole is greater than the minimum spacing of described circumferential passageway and described second axis hole, the end that penetrates that described circumferential bearing pin penetrates into described second axis hole is greater than zero with the distance of described annular lock pin, a described circumferential bearing pin penetrates the first axis hole of a described circumferential chain link and described second axis hole of previous described circumferential chain link, next described circumferential bearing pin penetrates the second axis hole of a described circumferential chain link and described first axis hole of a rear described circumferential chain link, until all described circumferential chain link head and the tail are connected to form annular arrangement.

Further, described wheel hub is two, the angle of described first wheel and the second wheel hub is 180 degree, described first wheel and the second wheel hub are symmetrical arranged and the line of described first wheel and the second wheel hub is positioned at described folding bearing circle diametrically, described rotating shaft is connected with the transmission shaft of automobile, described folding bearing circle also comprises: be arranged on the gear on described transmission shaft, and described second tractive unit and described first tractive unit are respectively equipped with the tooth bar with described gears meshing.

Further, described folding bearing circle is by the second radial location pin described in motor-driven and/or manual drives and described second tractive unit and described first radial location pin and described first tractive unit synchronizing moving, described folding bearing circle also comprises: be arranged on the motor on described transmission shaft, and described motor connects described gear; Or described folding bearing circle also comprises: be arranged on the sensor that the motor on described transmission shaft and the impression operator's compartment that is connected with motor collide, described motor connects described gear.

Further, described wheel hub is more than three, except described first wheel and the second wheel hub, described wheel hub also comprises: n accessory whorl hub, n >=1, each accessory whorl hub comprises: inside accessory whorl hub radial chain link and with described accessory whorl hub inside the hinged accessory whorl hub outer radial chain link of radial chain link, inside described accessory whorl hub, radial chain link and described accessory whorl hub outer radial chain link inside all have radial passage, inside described accessory whorl hub, the radial passage of radial chain link and the radial passage of described accessory whorl hub outer radial are interconnected

Described accessory whorl hub also comprises: accessory whorl hub tractive unit, inside described accessory whorl hub radial chain link radial passage in be provided with accessory whorl hub tractive unit, described accessory whorl hub tractive unit is movably arranged in the radial passage of radial chain link inside the radial passage of described accessory whorl hub outer radial chain link and described accessory whorl hub;

Inside described accessory whorl hub, radial chain link is identical with structure with the shape of chain link radial inside first, described accessory whorl hub outer radial chain link is identical with structure with the shape of described first outer radial chain link, inside described accessory whorl hub, the radial passage of radial chain link is identical with the length of the radial passage of radial chain link inside described first, and the stroke of described accessory whorl hub tractive unit is identical with the stroke of the first tractive unit and described second tractive unit.

Further, described first radial location pin has the insertion section of inserting described first opening and the location division be connected with described insertion section, described insertion section is positioned at that one end near described circumferential chain link, the sectional area of described insertion section successively decreases along direction from inside to outside, described position point is in the inner side of described insertion section, the first adjacent annular lock pin and the second annular lock pin is provided with in described first circumferential chain link, described first annular lock pin comprises: the first spigot surface, second annular lock pin comprises: the second spigot surface, described first spigot surface and described second spigot surface form the socket inserted for described insertion section, described location division has the second plane of orientation of the second annular lock pin described in the first plane of orientation of the first annular lock pin described in positioning supports and positioning supports.

Further, along the cross section of described first radial location pin, the shape of described insertion section is triangle, described first plane of orientation and described second plane of orientation are the straight line be connected with described leg-of-mutton base end points respectively, the radial direction at first wheel place described in described straight line parallel, the socket that described first spigot surface and described second spigot surface are formed is triangle, described first annular lock pin also comprises: be connected to the 3rd plane of orientation outside described first spigot surface, second annular lock pin also comprises: be connected to the 4th plane of orientation outside described second spigot surface, parallel described 4th plane of orientation of described 3rd plane of orientation and the radial direction at parallel described first wheel place.

Beneficial effect of the present invention has: by grip is made chain-type structure, chain link makes again the annular arrangement passage of hollow, movable locking device is provided with in described annular arrangement passage, can be locked by latching device and conciliate lock handle cover, the adjacent chain link put would not there be is limit rotation, thus realize bearing circle circumference and unlock, can Folding steering wheel, save oneself robbed the valuable time for succouring driver or driver in traffic accident.

And then, by grip and wheel hub are all made chain-type structure, make grip and wheel hub can quick-detachment, by the annular lock pin in grip and wheel hub, first radial location pin and described first tractive unit are connected across in the inner passage of adjacent circumferential chain link and radial chain link, realize the locking of bearing circle, by the movement of the first tractive unit, by annular lock pin, first radial location pin turns back to independent passage from the inner passage of the adjacent circumferential chain link of cross-over connection and radial chain link, like this, adjacent circumferential chain link and radial chain link would not have limit rotation, thus realize bearing circle circumference and radial direction unlock simultaneously, bearing circle can be made radially to fold, can more thoroughly Folding steering wheel.And then transmission shaft can also be designed to by the present invention can the structure of axial compression, compresses, can reduce the space shared by bearing circle further to transmission shaft.

Accompanying drawing explanation

Fig. 1 sectional structure shows the integral structure of the folding bearing circle schematically gone out according to a first embodiment of the present invention;

Fig. 2 sectional structure diagrammatically illustrates the integral structure of folding bearing circle according to a first embodiment of the present invention, and wherein, show the radial passage in each wheel hub and the second opening, in the present embodiment, the number of wheel hub is two;

Fig. 3 sectional structure diagrammatically illustrates structure when the second locating dowel pin is inserted into the second opening;

Fig. 4 sectional structure diagrammatically illustrates the structure of the first opening;

Fig. 5 sectional structure diagrammatically illustrates structure when the first locating dowel pin is inserted into the first opening;

Fig. 6 plan structure diagrammatically illustrates the structure of a circumferential chain link according to the embodiment of the present invention;

The main TV structure of Fig. 7 diagrammatically illustrates the structure of a circumferential chain link according to the embodiment of the present invention;

Fig. 8 plan structure diagrammatically illustrates the connection structure of the adjacent circumferential chain link that invention removes annular lock;

Fig. 9 plan structure diagrammatically illustrates the structure of the annular lock locking adjacent circumferential chain link of the embodiment of the present invention;

Figure 10 plan structure diagrammatically illustrates the structure of the adjacent circumferential chain link when embodiment of the present invention unlocks;

Structure when Figure 11 plan structure is folding after diagrammatically illustrating the adjacent circumferential chain link unblock of the embodiment of the present invention;

The main TV structure of Figure 12 diagrammatically illustrates the decomposition texture of adjacent circumferential chain link;

The main TV structure of Figure 13 diagrammatically illustrates the connection structure of adjacent circumferential chain link;

Figure 14 with main TV structure show radial chain link inside first and with described first inside the decomposition texture of radial chain link;

Figure 15 with main TV structure show radial chain link inside first and with described first inside the connection structure of radial chain link;

Figure 16 plan structure shows radial chain link and the decomposition texture with described first outer radial chain link inside first;

Figure 17 plan structure shows radial chain link and the connection structure with described first outer radial chain link inside first;

Figure 18 sectional structure shows the first radial location pin, the first opening, the second radial location pin and the second opening;

Figure 19 sectional structure shows the structure that the second radial location pin is extracted from the second opening;

Figure 20 sectional structure shows the structure that the first radial location pin is extracted from the first opening;

It is the schematic diagram of integral type structure that Figure 21 plan structure shows radial chain link and the first circumferential chain link inside first;

Figure 22 sectional structure shows the schematic diagram of the first circumferential chain link released state;

Figure 23 sectional structure shows the schematic diagram of the first circumferential chain link locking state;

Figure 24 sectional structure shows the structure of the insertion section of the first radial location pin;

Figure 25 sectional structure shows the structure of the annular lock pin in the first circumferential chain link;

Figure 26 sectional structure shows the decomposition texture of the first radial location pin and the first tractive unit;

Figure 27 sectional structure show the first radial location pin and the first tractive unit folding time connection structure;

Figure 28 sectional structure shows connection structure when the first radial location pin and the first tractive unit half-lap;

Figure 29 sectional structure show the first radial location pin and the first tractive unit completely folding time connection structure;

Figure 30 sectional structure diagrammatically illustrates the integral structure of the folding bearing circle with three wheel hubs.

Detailed description of the invention

As shown in Figure 1, the described folding bearing circle according to the embodiment of the present invention comprises: the rotating shaft 5 of bearing circle, the grip 1 of bearing circle and the wheel hub be connected between described grip 1 and rotating shaft 5, and rotating shaft 5 can be solid axle, also can be axle sleeve or hollow shaft.

As shown in Fig. 1,2 and 4, described grip 1 comprises: multiple circumferential chain link being in turn connected to form closed circle, the head end of each circumferential chain link and tail end are hinged with adjacent circumferential chain link respectively, the inside of each circumferential chain link has circumferential passageway, and the circumferential passageway of all circumferential chain links is communicated with formation annular arrangement passage; Movable locking device 101 is provided with in described annular arrangement passage.As shown in Fig. 8 to Figure 10, such as, circumference chain link 15 (circumferential chain link 15 is except the first circumferential chain link and second week are to the circumferential chain link except chain link) is hinged with previous circumferential chain link 15a, circumference chain link 15 is hinged with a rear circumferential chain link 15b, as shown in figure 11, the vertical adjacent circumferential chain link of the rotation direction of each circumferential chain link connects the plane formed.As shown in Figure 6 and Figure 7, the inside of circumference chain link 15 all has circumferential passageway 157, the pin-and-hole that circumference chain link 15 is connected with adjacent circumferential chain link is respectively pin-and-hole 1531 and pin-and-hole 1551, circumferential passageway 157 lays respectively at two vertical direction with pin-and-hole 1531 and pin-and-hole 1551, and as shown in figure 13, the bearing pin 16 penetrated in pin-and-hole 1531 and pin-and-hole 1551 is split-type structural, make the bearing pin 16 connecting adjacent circumferential chain link can not penetrate the internal circumferential passage 157 of circumferential chain link 15, can not contact with the internal circumferential passage 157 of circumferential chain link 15 or affect mutually.As shown in Fig. 8 to Figure 10, the internal circumferential passage 157b of the circumference internal circumferential passage 157 of chain link 15, the internal circumferential passage 157a of circumferential chain link 15a and circumferential chain link 15b forms annular arrangement path 10 (circular channel), by that analogy, the circumferential passageway of all circumferential chain links is communicated with formation annular arrangement path 10, as shown in Figures 9 to 11, being provided with movable locking device 101 in described annular arrangement path 10, such as, is annular lock pin 150,150a and 150b.Certainly, except annular lock pin, latching device can also adopt other structures.

By grip is made chain-type structure, chain link makes again the annular arrangement passage of hollow, movable locking device is provided with in described annular arrangement passage, can be locked by latching device and conciliate lock handle cover, the adjacent chain link put would not there be is limit rotation, thus realize bearing circle circumference and radial direction unlock simultaneously, can Folding steering wheel.

Further, as shown in Figures 2 and 3, described wheel hub comprises: be disposed radially and form first wheel 31 and second wheel hub 35 of angle;

As shown in Figure 14 to Figure 17, described first wheel 31 comprises: inside first radial chain link 311 and with described first inside radial chain link by hinged the first outer radial chain link 331 of the first radial hinge 32, inside described first, radial chain link 311 and described first outer radial chain link 331 inside all have radial passage; The radial passage 3310 of described first outer radial chain link is communicated with the radial passage 3110 of radial chain link inside described first, and as shown in figure 21, the radial passage 3310 of described first outer radial chain link is communicated with described radial passage 3110;

Inside first, the hinged principle of the hinged and circumferential chain link of radial chain link 311 and the first outer radial chain link 331 is similar, all has inner passage, has movable locking device in inner passage.Only, inside first, the shape of radial chain link 311 and the first outer radial chain link 331 is not circular arc, is straight, to be arranged in radial direction.As shown in Figure 14 to Figure 17, the first outer radial chain link 331 has pick up the ears 3315 and inner passage 3310, picks up the ears 3315 to be provided with pin-and-hole 3317, picks up the ears 3315 can be two, two 3315 formation grooves 3319 of picking up the ears.Inside first, radial chain link 311 has boss 3115 and inner passage 3110, boss 3115 is provided with pin-and-hole 3117, boss 3115 is for being inserted in groove 3319 for 3315 aligning with picking up the ears, after aligning, pin-and-hole 3317 and pin-and-hole 3117 can be coupled together by bearing pin 32, bearing pin 32 is not through inner passage 3310 and 3110, thus, hinged and locking inside first between radial chain link 311 and the first outer radial chain link 331 is independent of each other, when the first tractive unit 316 is connected across in inner passage 3310 and 3110, inside first, radial chain link 311 and the first outer radial chain link 331 are locked, can not rotate, when returning in inner passage 3110 between radial chain link 311 and the first outer radial chain link 331 inside first, inside first, radial chain link 311 and the first outer radial chain link 331 unlock, can rotate.Wherein, as Figure 16 and Figure 17, pick up the ears 3315 and the lateral surface of boss 3115 be arc surface, can mutually rotate between radial chain link 311 and the first outer radial chain link 331 inside first.

As shown in Figure 3 and Figure 5, described first wheel 31 also comprises: the first radial location pin 336 and the first tractive unit 316, first radial location pin 336 is such as the shape of straight-bar or approximate straight-bar, first tractive unit 316 is also such as the shape of straight-bar or approximate straight-bar, and the first tractive unit 316 is for drawing or promote the movement of the first radial location pin 336.First tractive unit 316 can manually or Electronic control its move.

In order to not only ensure locking but also ensure to unlock, and realize the folding of the first radial chain link, described first radial location pin and described first tractive unit flexibly connect or are flexible coupling, if be hard link therebetween, then cannot realize folding.In order to ensure that the first radial location pin 336 and the first tractive unit 316 can synchronizing movings, first radial location pin 336 and the first tractive unit 316 be mutually be pressed on together with, synchronously can promote the first radial location pin 336 with the movement realizing the first tractive unit 316.Inside the radial passage 3310 and described first that first radial location pin 336 and the first tractive unit 316 are all movably arranged on described first outer radial chain link radial chain link radial passage 3110 in, described first radial location pin 336 is positioned at the outside of described first tractive unit 316;

Described second wheel hub 35 also can adopt setting same or similar with first wheel 31.Described second wheel hub 35 comprises: inside second radial chain link 356 and with described second inside hinged the second outer radial chain link 354 of radial chain link, inside described second, the hinged and described second outer radial chain link inside of radial chain link all has radial passage, inside described second, the radial passage of radial chain link and the radial passage of described second outer radial are interconnected, and, as shown in Figure 2, the radial passage of described second outer radial is communicated with described torus section.

As shown in Figure 3 and Figure 5, described second wheel hub 35 also comprises: the second radial location pin 356 and the second tractive unit 354, described second radial location pin and described second tractive unit flexibly connect or are flexible coupling, as Figure 18 and Figure 19, inside the radial passage 3510 and described second that described second radial location pin and described second tractive unit are all movably arranged on described second outer radial chain link radial chain link radial passage in, described second radial location pin 354 is positioned at the outside of described second tractive unit 356;

As shown in Figure 3 and Figure 5, described circumferential chain link at least comprises: the first circumferential chain link 11 crossing with described first outer radial chain link, and crossing with described second outer radial chain link with second week to chain link 13, as Figure 18 and Figure 19, be provided with the first circumferential passageway (being presented as a part for annular arrangement path 10) in described first circumferential chain link, described second week is provided with the second circumferential passageway (being presented as a part for annular arrangement path 10) in chain link;

Be provided with the annular lock pin of multiple mutual extruding in described annular arrangement path 10, the length of each described annular lock pin is one section of circular arc, and each annular lock pin is slidably disposed in described annular arrangement passage, and multiple described annular lock pin is connected to form the annular with opening; The circumferential lengths of described opening adds that the circumferential lengths sum of multiple described annular lock pin equals the length of described annular arrangement passage;

Described opening is first opening or the second opening that can mutually switch, as shown in Figure 4, described first opening 110 is positioned at described first circumferential passageway and is positioned at the intersection, radial passage of described first circumferential passageway and described first outer radial chain link, as shown in Figure 2, described second opening 130 is positioned at described second circumferential passageway and is positioned at the intersection, radial passage of described second circumferential passageway and described second outer radial chain link, described first radial location pin 336 can insert and depart from described first opening 110, described second radial location pin 354 can insert and depart from described second opening 130.Described second radial location pin and described second tractive unit and described first radial location pin and described first tractive unit synchronizing moving, as shown in Figure 5, when described first radial location pin 336 is inserted in the first opening 110 with described first tractive unit 316, the second radial location pin and described second tractive unit synchronously leave second week to chain link 13 and the first opening 110; When described first radial location pin 336 departs from the first opening 110 with described first tractive unit 316, first opening 110 closes, first opening 110 is opened, second radial location pin and described second tractive unit are synchronously inserted in the second opening 130, and described first radial location pin 336 and described first tractive unit 316 distance be inserted in the first opening 110 equal the distance that the second radial location pin and described second tractive unit leave the second opening 130;

As Fig. 5, when described first radial location pin is arranged in the position of inserting described first opening, described second radial location pin is positioned at the position departing from described second opening, each described annular lock pin is connected across in adjacent two circumferential passageways in described annular arrangement passage, such as, annular lock pin 111 and annular lock pin 1113 jump in adjacent circumferential passageway respectively, as Fig. 9, annular lock pin 150a cross-over connection or dislocation are in annular arrangement path 10, annular lock pin 150 cross-over connection of circumference chain link 15 or dislocation are in the circumferential passageway 157a of circumferential chain link 15a, the annular lock pin 150b cross-over connection of circumference chain link 15b or dislocation are in the circumferential passageway 157b of circumferential chain link 15, by that analogy, the lock pin of all circumferential chain links all misplaces or is connected across in adjacent circumferential passageway.

Simultaneously, as Fig. 5 and Figure 19, inside the radial passage and described first that described first tractive unit 316 is connected across described first outer radial chain link radial chain link radial passage in, inside the radial passage and described second that described second tractive unit 356 is connected across described second outer radial chain link radial chain link radial passage in, described folding bearing circle is in the lock state, no matter be grip 1 or wheel hub 3, due to cross-over connection or the dislocation of the annular lock pin in circumferential passageway or radial passage or locating dowel pin, grip 1 and wheel hub 3 all cannot fold, thus ensure that the safety of automobile normal running and stablize.Grip 1 and wheel hub 3 can be made up of iron and steel, can also be made up of aluminum alloy, engineering plastics, carbon fiber, like this, more wear-resisting, are also easy to folding.

As Fig. 3, when described first radial location pin 336 is positioned at the position departing from described first opening, described second radial location pin 354 is positioned at the position of inserting described second opening, now, as Figure 10, each described annular lock pin is only arranged in a described circumferential passageway of described annular arrangement passage, each annular lock pin is got back in the circumferential passageway of oneself, no longer misplace or jump in adjacent circumferential passageway, as Fig. 3 and Figure 20, described first tractive unit 316 is only arranged in the radial passage of radial chain link inside described first, described second tractive unit 356 is only arranged in the radial passage of radial chain link inside described second, namely in radial direction, each locating dowel pin and tractive unit are all got back in the radial passage of oneself, no longer misplace or jump in adjacent radial passage, thus, no matter grip 1 or wheel hub 3 due to the return of the annular lock pin in circumferential passageway or radial passage or locating dowel pin, grip 1 can fold separately in the circumferential, grip 1 can also be made with wheel hub 3 radial folding simultaneously, grip 1 is made to carry out radial folding again after circumference is folding, further shorten the radial dimension of bearing circle, for operator's compartment has vacateed rescue space.

Further, as Fig. 1 and Fig. 2, the shape of each circumferential chain link is identical with structure, the shape of the circumferential passageway of each circumferential chain link is equal with length, the width W of described first radial location pin equals the twice of the stroke of described each annular lock pin, and such as, circumferential chain link 15, circumferential chain link 15a are identical with structure with the shape of circumferential chain link 15b, to make each described annular lock pin can along the circumferential direction forward and be reversed way moving, switch the locking and the unblock that realize circumferential chain link.As shown in figures 24 and 25, the width W of the first radial location pin 336 is the distance between plane of orientation 3362 and plane of orientation 3364, it is all identical for comprising the first circumferential chain link and second week to the stroke (circumferential stroke) of each described annular lock pin in chain link, first radial location pin 336 is inserted in the annular lock pin in the first circumferential chain link, the each described annular lock pin in each circumferential chain link can be made simultaneously circumferentially to move to positive and negative both direction, realize the locking of circumferential chain link.In like manner, the second radial location pin is inserted in the annular lock pin in the first circumferential chain link, each described annular lock pin in each circumferential chain link can be made simultaneously circumferentially to move to positive and negative both direction, realize the unblock of circumferential chain link.The rectilinear movement of the first radial location pin or the second radial location pin, the double circumference being converted to annular lock pin is mobile, and thus, bearing circle unlocks fast, only needs a radial moved further, just can realize the unblock of bearing circle.

As Fig. 9 to Figure 11, except the first circumferential chain link and second week are to except the described annular lock pin in chain link, be provided with an annular lock pin in each circumferential chain link, the length of each described annular lock pin equals the length of the circumferential passageway of described each circumferential chain link, and during to ensure to unlock, circumference chain link is folding.For the first circumferential chain link and second week to chain link, as Figure 22 to Figure 25, in each circumferential passageway, be provided with two annular lock pins, thus, more than the number of described circumferential chain link two of the total number of all annular lock pins.Such as, be provided with annular lock pin 111 and annular lock pin 113 in the first circumferential chain link 11, the length sum of annular lock pin equals the length of the circumferential passageway of the first circumferential chain link 11.In like manner, second week is provided with annular lock pin 131 and annular lock pin 133 in chain link 13.The number of circumference chain link can be 4 joints, 6 joints, and 8 save, 10 joints, 12 joints, 16 joints, 24 joints etc., and the number of circumferential chain link is more, and the degree that grip folds is larger.

Further, as shown in Figure 26 to Figure 29, described first radial location pin 336 is connected by using flexible wire with described first tractive unit 316, and described using flexible wire is connect line segment between the two endpoints, is connected to form by the first using flexible wire 41 and the second using flexible wire 43.The first end of described using flexible wire is A point, described A point is positioned at the inside of described first radial location pin, second end of described using flexible wire is B point, described B point is positioned at the inside of described first tractive unit, the inside of described first radial location pin 336 is provided with the first open slot 3368 holding described using flexible wire and rotate, the inside of described first tractive unit 316 is provided with the second open slot 3168 holding described using flexible wire and rotate, described first open slot and the vertical described first radial hinge 32 of described second open slot, direction is consistent in relative rotation with described first tractive unit 316 with the first radial location pin 336 for the rotation direction of i.e. using flexible wire.

Described first radial location pin 336 has the first contact surface 3367, described first tractive unit 316 has the second contact surface 3167, described first contact surface 3361 adjacent with described second contact surface 3167 and faced by, described first contact surface and described second contact surface are semi-cylindrical face, to form round and smooth rotational plane.When first radial location pin 336 relatively rotates with described first tractive unit 316, the first contact surface 3361 and described second contact surface 3167 compress all the time mutually.

As shown in figure 27, when described folding bearing circle is in the lock state, described first radial location pin 336 is positioned on straight line with described first tractive unit 316, described using flexible wire is straight line, and described first contact surface and described second contact surface fit, described using flexible wire and described first contact surface intersect at C point, described using flexible wire and described second contact surface intersect at D point, the center of circle of described first contact surface is described A point, the radius of described first contact surface is the straight-line distance of A point and C point, described first open slot 3368 with described A point for the center of circle, and described first open slot extends to described first contact surface, and the opening of described first open slot is at least 90 degree, the center of circle of described second contact surface is described B point, the radius of described second contact surface is the straight-line distance of B point and D point, described second open slot 3168 with described B point for the center of circle, and described second open slot extends to described second contact surface, and the opening of described second open slot is at least 90 degree.Like this, as shown in figure 28, when the first radial location pin and the first tractive unit half-lap (completely not folding), first radial location pin 336 and described first tractive unit 316 one direction can rotate and are less than 90 degree mutually, as shown in figure 29, time completely folding, the two also can turn to and equal 90 degree.If the opening of the first open slot 3368 and the second open slot 3168 is 180 degree, then the first radial location pin 336 positive and negative both direction can rotate 90 degree mutually with described first tractive unit 316, first wheel can upwards be folded, also can fold downwards, can select flexibly according to actual vehicle condition.Whether no matter rotate between the first radial location pin 336 and described first tractive unit 316, using flexible wire, what neither affect therebetween is folding, does not disconnect again, can realize interlock at any time if being always tightly connected to therebetween.Except the first radial location pin 336 is provided with except the first open slot 3368 and the second open slot 3168 with described first tractive unit 316, radial chain link 311 and be also provided with the opening holding described using flexible wire and rotate with the respective corresponding above-mentioned open slot of described first outer radial chain link 331 inside first, radial chain link 311 and can mutually rotating with described first outer radial chain link inside making first.Further, as suggested in figures 21 and 23, described first circumferential chain link 11 and the first outer radial chain link 331 are integral type structure, like this, are convenient to install, but the annular lock pin of the first circumferential chain link 11 inside and the first radial location pin 336 remain and separate.

Further, comprise the first circumferential chain link identical to the circumferential length of each circumferential chain link of chain link with second week, the shape of each circumferential chain link is identical, as shown in figure 13, each circumferential chain link is hinged by circumferential bearing pin 16, and the shape of the circumferential passageway of each chain link is identical with length.

For the connection of the circumferential chain link 15 in Fig. 6 and Fig. 7 and Figure 12 and Figure 13 and circumferential bearing pin 15a, the vertical described annular arrangement passage 157 of described circumferential bearing pin 16 and described annular lock pin.As Fig. 6 and Fig. 7, circumference chain link 15 comprises: circular arc chain link main body 151, the chain link head end be connected respectively with the two ends of described chain link main body and chain link tail end, what described chain link head end had the circular arc of circumferentially stretching out picks up the ears 153, described chain link tail end has the boss 155 with described circular arc of picking up the ears to be connected, described chain link main body 151, described in pick up the ears 153 identical with the circular arc radian of described boss 155 so that adjacent circumferential chain link connects.

Described picking up the ears 153 is provided with the first axis hole 1531, and described boss 155 is provided with the second axis hole 1551, and each described circumferential passageway is arranged in a described chain link main body 151 and each described boss 155, picks up the ears 153 not have circumferential passageway.As Figure 12, described circumferential passageway 157 and the minimum spacing of described first axis hole 1531 are greater than the minimum spacing of described circumferential passageway 157 and described second axis hole 1551, namely, first axis hole 1531 is arranged on the outside of the second axis hole 1551, can coordinate with the boss 155a of the last week to chain link 15a to make the first axis hole 1531, pick up the ears 153 can be one and just can complete hinged and inner locking, preferably, pick up the ears 153 to be two, be arranged in the both sides of circumferential passageway 157, pick up the ears for two between 153, to form groove 1533, groove 1533 holds boss 155a, formation is located by connecting, add the stable of bearing circle.

As Figure 13, the end that penetrates that described circumferential bearing pin 16 penetrates into described second axis hole is greater than zero with the distance of described annular lock pin (or circumferential passageway 157), namely, circumference bearing pin 16 does not penetrate in annular lock pin (or circumferential passageway 157), thus make the locking of annular lock pin (or circumferential passageway 157) can not affect between circumferential chain link hinged, the hinged locking that also can not affect annular lock pin (or circumferential passageway 157) between circumferential chain link.As Fig. 8 to Figure 11, a described circumferential bearing pin penetrates the first axis hole of a described circumferential chain link and described second axis hole of previous described circumferential chain link, next described circumferential bearing pin penetrates the second axis hole of a described circumferential chain link and described first axis hole of a rear described circumferential chain link, until all described circumferential chain link head and the tail are connected to form annular arrangement.

Further, as depicted in figs. 1 and 2, described wheel hub is two, the angle of described first wheel 31 and the second wheel hub 35 is 180 degree, described first wheel and the second wheel hub are symmetrical arranged and the line of described first wheel and the second wheel hub is positioned at described folding bearing circle diametrically, as Figure 18, described rotating shaft 5 is connected with the transmission shaft 9 of automobile, described folding bearing circle also comprises: be arranged on the gear 8 on described transmission shaft 9, described second tractive unit 316 and described first tractive unit 356 are respectively equipped with the tooth bar with described gears meshing, be such as tooth bar 3160 and tooth bar 3360.By rack pinion, can rotate in the bottom drive gear of bearing circle, thus drive the movement of the second tractive unit 316 and described first tractive unit 356, thus realize locking or unlock.

Further, described folding bearing circle is by the second radial location pin described in motor-driven or manual drives and described second tractive unit and described first radial location pin and described first tractive unit synchronizing moving, such as, spanner, key manual drives gear 8 can be passed through.As Figure 18 to Figure 20, described folding bearing circle also comprises: be arranged on the motor 6 on described transmission shaft 9, and described motor 6 connects described gear 8.Motor 6 can be micromotor, be arranged in the space of rotating shaft 5 (being such as axle sleeve) below of bearing circle, air bag and/or loudspeaker can be provided with in the cavity 7 of the top of first wheel, the second wheel hub middle, the drivings device such as each wheel hub, motor and gear are all arranged on the below of cavity 7, like this, the use of air bag and/or loudspeaker is not affected.Electric machine control is comparatively stable, can not arbitrarily unlock, and motor is between transmission shaft 9 and cavity 7, is not easy maloperation.

As Figure 18, when the first locating dowel pin 336 is in the process being inserted into circular channel 10, the second locating dowel pin 354 leaves circular channel 10.As Figure 19, when the first locating dowel pin 336 is after being inserted into circular channel 10, two annular lock pins in first circumferential chain link squeeze by the first locating dowel pin 336, second locating dowel pin 354 away from second week to the annular lock pin of two in chain link, second week presses together to the annular lock pin of two in chain link, realizes the locking of bearing circle.As Figure 20, after the first locating dowel pin 336 is released from circular channel 10, second week squeezes to the annular lock pin of two in chain link by the second locating dowel pin 354, and two annular lock pins in the first circumferential chain link press together, and realize the unblock of bearing circle.

Better way is, motor and sensor are coupled together, for when collision happens, sensor senses is collided, and feeding back to control module (being such as cpu or PLC), control module is given an order again, makes electric motor starting, thus when there is traffic accident, the unblock of bearing circle can be realized automatically.

Further, as shown in figure 30, described wheel hub is more than three, and except described first wheel and the second wheel hub, described wheel hub also comprises: one or more accessory whorl hubs 39.As shown in figure 30, wheel hub is three altogether, is mutually arranged on radial direction, to make the structure of bearing circle more stable in 120 degree of angles.Accessory whorl hub 39 comprises: inside accessory whorl hub radial chain link 391 and with described accessory whorl hub inside the hinged accessory whorl hub outer radial chain link 393 of radial chain link, inside described accessory whorl hub, radial chain link 391 and described accessory whorl hub outer radial chain link 393 inside all have radial passage, inside described accessory whorl hub, the radial passage of radial chain link and the radial passage of described accessory whorl hub outer radial are interconnected

Described accessory whorl hub 39 also comprises: accessory whorl hub tractive unit 396, inside described accessory whorl hub radial chain link radial passage in be provided with accessory whorl hub tractive unit 396, described accessory whorl hub tractive unit 396 is movably arranged in the radial passage of radial chain link inside the radial passage of described accessory whorl hub outer radial chain link and described accessory whorl hub; With first wheel and the second wheel hub unlike, accessory whorl hub 39 no longer has locating dowel pin, and other arrange all identical.Like this, bearing circle still realizes the unblock of circumferential chain link by the action of first wheel and the second wheel hub, make the structure of unblock simple, no matter bearing circle has two, three or four wheel hubs, only needs the action of first wheel and the second wheel hub just can realize the unblock of circumferential chain link.Simultaneously in order to accessory whorl hub 39 can be folded, by the movement of accessory whorl hub tractive unit 396 in accessory whorl hub outer radial chain link 393 radial passage 3930, control the folding of radial chain link 391 and described accessory whorl hub outer radial chain link 393 inside accessory whorl hub.

Inside described accessory whorl hub, radial chain link 391 is identical with structure with the shape of chain link 311 radial inside first, described accessory whorl hub outer radial chain link 393 is identical with structure with the shape of described first outer radial chain link 331, inside described accessory whorl hub, the radial passage of radial chain link is identical with the length of the radial passage of radial chain link inside described first, the stroke of described accessory whorl hub tractive unit 396 is identical with the stroke of the first tractive unit 316 and described second tractive unit 354, when moving to make the first tractive unit 316 and described second tractive unit 354, accessory whorl hub tractive unit 396 also synchronizing moving.Such as, when first tractive unit 316 is inserted in circular channel, first tractive unit 316 is away from the axis of bearing circle, second tractive unit 354 and accessory whorl hub tractive unit 396 are close to the axis near bearing circle, accessory whorl hub tractive unit 396 returns to the radial passage of oneself between the radial passage being connected across radial chain link inside accessory whorl hub outer radial chain link 393 radial passage 3930 and accessory whorl hub, thus be the hinged unblock inside described accessory whorl hub between radial chain link 391 and described accessory whorl hub outer radial chain link 393, inside described accessory whorl hub, radial chain link 391 and described accessory whorl hub outer radial chain link 393 can rotate around hinge 392 mutually.And first wheel and the folding of the second wheel hub have been discussed to some extent above, do not repeat them here.

For the transmission of the respective tractive unit of three wheel hubs, motor-driven gear and tooth bar still can be adopted to realize.With the tooth bar set-up mode in Figure 18 to Figure 20 unlike, the tooth bar angle of the tractive unit of two wheel hubs is 180 degree, and as in Figure 30, the tooth bar of each tractive unit forms 120 degree of angles mutually.

Further, as shown in figures 24 and 25, described first radial location pin 336 has the insertion section of inserting described first opening and the location division be connected with described insertion section, and described insertion section is positioned at that one end near described circumferential chain link, is namely positioned at the outer end of the first radial location pin 336.The sectional area of described insertion section successively decreases along direction from inside to outside, described position point is in the inner side of described insertion section, the first adjacent annular lock pin 111 and the second annular lock pin 113 is provided with in described first circumferential chain link, as shown in figures 24 and 25, described first annular lock pin 111 comprises: the first spigot surface 1111, second annular lock pin 113 comprises: the second spigot surface 1131, described first spigot surface 1111 and described second spigot surface 1131 form the socket 112 inserted for described insertion section, socket 112 is convenient to the first radial location pin 336 quick insertion, separately annular lock pin 111 and annular lock pin 113.Described location division has the second plane of orientation 3362 of the second annular lock pin described in the first plane of orientation 3364 of the first annular lock pin described in positioning supports and positioning supports.Location division is used for after the first radial location pin 336 inserts the first opening, and what the first radial location pin 336 was firm is clamped between annular lock pin 111 and annular lock pin 113, and can not more squeezed return, thus holding position is stable.

Further, as shown in figures 24 and 25, along the cross section of described first radial location pin, the shape of described insertion section is the triangle formed by straight line 3363 and straight line 3361, described first plane of orientation 3364 and described second plane of orientation 3362 are the straight line be connected with described leg-of-mutton base end points respectively, the radial direction at first wheel place described in described straight line parallel, the socket 112 that described first spigot surface 1111 and described second spigot surface 1311 are formed is triangle.Insertion section and socket 112 are triangle, and the first radial location pin extrusion speed is fast, and the speed of annular lock pin movement is fast, can use the unblock in emergency circumstances in the short time.

As shown in figures 24 and 25, described first annular lock pin also comprises: be connected to the 3rd plane of orientation 1112 outside described first spigot surface, second annular lock pin also comprises: be connected to the 4th plane of orientation 1132 outside described second spigot surface, parallel described 4th plane of orientation 1132 of described 3rd plane of orientation 1112 and the radial direction at parallel described first wheel place.After the first radial location pin 336 inserts the first opening, firm for first radial location pin 336 is clamped between annular lock pin 111 and annular lock pin 113 by parallel described and the 4th plane of orientation 1132 of the 3rd plane of orientation 1112, on the basis with the first plane of orientation 3364 and the second plane of orientation 3362 positioning supports, can realize Dual positioning support and can not more squeezed return, thus keep bearing circle unlock after can not return come.

In the present invention, the cross section of the circumferential passageway of circumference chain link can be rectangle or circle, the cross section of annular lock pin can be rectangle or circle, each tractive unit and locating dowel pin can be rectangle or circle, and, annular lock pin is only needed to enter into the circumferential passageway of adjacent circumferential chain link a little, namely be connected across in the circumferential passageway of two adjacent circumferential chain links a little, just can lock two adjacent circumferential chain links, stop the rotation of two adjacent circumferential chain links, locking property is good, and make use of the space of bearing circle inside, take no longer separately the space outerpace of bearing circle, save space, ensure that the stable of normal driving and safety, when external force exerts a force to tractive unit, could unlock, realize folding, namely, bearing circle normality is locking, during appearance situation, ability external force drives tractive unit, bearing circle is unlocked.External force can be manual, also can be electronic or mechanical drive driving, also can arrange manually with electronic, to carry out multiple security simultaneously.

The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.For each component part of the present invention can mutually combine under the condition of not conflicting, any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.

Claims

1. a folding bearing circle, described folding bearing circle comprises: the rotating shaft of bearing circle, the grip of bearing circle and the wheel hub be connected between described grip and rotating shaft, is characterized in that,

Described grip comprises: multiple circumferential chain link being in turn connected to form closed circle, the head end of each circumferential chain link and tail end are hinged with adjacent circumferential chain link respectively, the inside of each circumferential chain link has circumferential passageway, and the circumferential passageway of all circumferential chain links is communicated with formation annular arrangement passage; Movable locking device is provided with in described annular arrangement passage;

Described grip and wheel hub are made by iron and steel or by aluminum alloy, engineering plastics or carbon fiber;

Described wheel hub at least comprises: be disposed radially and form first wheel and second wheel hub of angle;

Described second wheel hub comprises: inside second radial chain link and with described second inside hinged the second outer radial chain link of radial chain link, inside described second, radial chain link and described second outer radial chain link inside all have radial passage, inside described second, the radial passage of radial chain link and the radial passage of described second outer radial chain link are interconnected, further, the radial passage of described second outer radial chain link and described annular arrangement channel connection;

Described second wheel hub also comprises: the second radial location pin and the second tractive unit, described second radial location pin and described second tractive unit flexibly connect, inside the radial passage and described second that described second radial location pin and described second tractive unit are all movably arranged on described second outer radial chain link radial chain link radial passage in, described second radial location pin is positioned at the outside of described second tractive unit;

Described latching device is the annular lock pin of the multiple mutual extruding be arranged in described annular arrangement passage, and each described annular lock pin is slidably disposed in described annular arrangement passage, and multiple described annular lock pin is connected to form the annular with opening; The circumferential lengths of described opening adds that the circumferential lengths sum of multiple described annular lock pin equals the length of described annular arrangement passage;

2. folding bearing circle as claimed in claim 1, it is characterized in that, the shape of each circumferential chain link is identical with structure, the shape of the circumferential passageway of each circumferential chain link is equal with length, the width W of described first radial location pin equals the twice of the stroke of described each annular lock pin, more than the number of described circumferential chain link two of the number of described annular lock pin, first circumferential chain link and second week are equipped with two annular lock pins in chain link, except the first circumferential chain link and second week are to except the described annular lock pin in chain link, the length of each described annular lock pin equals the length of the circumferential passageway of described each circumferential chain link.

3. folding bearing circle as claimed in claim 1, is characterized in that,

Described first radial location pin is connected by using flexible wire with described first tractive unit, described using flexible wire is connect line segment between the two endpoints, the first end of described using flexible wire is A point, described A point is positioned at the inside of described first radial location pin, second end of described using flexible wire is B point, described B point is positioned at the inside of described first tractive unit, the inside of described first radial location pin is provided with the first open slot holding described using flexible wire and rotate, the inside of described first tractive unit is provided with the second open slot holding described using flexible wire and rotate

4. folding bearing circle as claimed in claim 1, it is characterized in that, described first circumferential chain link and the first outer radial chain link are integral type structure, comprise the first circumferential chain link identical to the circumferential length of each circumferential chain link of chain link with second week, the shape of each circumferential chain link is identical, each circumferential chain link is by circumferential hinge, the shape of the circumferential passageway of each chain link is identical with length, the vertical described annular arrangement passage of described circumferential bearing pin and described annular lock pin, each circumferential chain link comprises: circular arc chain link main body, the chain link head end be connected respectively with the two ends of described chain link main body and chain link tail end, described chain link head end has picking up the ears of the circular arc of circumferentially stretching out, described chain link tail end has the boss with described circular arc of picking up the ears to be connected, described chain link main body, described pick up the ears identical with the circular arc radian of described boss, described picking up the ears is provided with the first axis hole, described boss is provided with the second axis hole, each described circumferential passageway is arranged in each described chain link main body and each described boss, the minimum spacing of described circumferential passageway and described first axis hole is greater than the minimum spacing of described circumferential passageway and described second axis hole, the end that penetrates that described circumferential bearing pin penetrates into described second axis hole is greater than zero with the distance of described annular lock pin, a described circumferential bearing pin penetrates the first axis hole of a described circumferential chain link and described second axis hole of previous described circumferential chain link, next described circumferential bearing pin penetrates the second axis hole of a described circumferential chain link and described first axis hole of a rear described circumferential chain link, until all described circumferential chain link head and the tail are connected to form annular arrangement.

5. folding bearing circle as claimed in claim 1, it is characterized in that, described wheel hub is two, the angle of described first wheel and the second wheel hub is 180 degree, described first wheel and the second wheel hub are symmetrical arranged and the line of described first wheel and the second wheel hub is positioned at described folding bearing circle diametrically, described rotating shaft is connected with the transmission shaft of automobile, described folding bearing circle also comprises: be arranged on the gear on described transmission shaft, and described second tractive unit and described first tractive unit are respectively equipped with the tooth bar with described gears meshing.

6. folding bearing circle as claimed in claim 5, it is characterized in that, described folding bearing circle is by the second radial location pin described in motor-driven and/or manual drives and described second tractive unit and described first radial location pin and described first tractive unit synchronizing moving, described folding bearing circle also comprises: be arranged on the motor on described transmission shaft, and described motor connects described gear; Or described folding bearing circle also comprises: be arranged on the sensor that the motor on described transmission shaft and the impression operator's compartment that is connected with motor collide, described motor connects described gear.

7. folding bearing circle as claimed in claim 1, it is characterized in that, described wheel hub is more than three, except described first wheel and the second wheel hub, described wheel hub also comprises: n accessory whorl hub, n >=1, each accessory whorl hub comprises: inside accessory whorl hub radial chain link and with described accessory whorl hub inside the hinged accessory whorl hub outer radial chain link of radial chain link, inside described accessory whorl hub, radial chain link and described accessory whorl hub outer radial chain link inside all have radial passage, inside described accessory whorl hub, the radial passage of radial chain link and the radial passage of described accessory whorl hub outer radial are interconnected,

8. folding bearing circle as claimed in claim 1, it is characterized in that, described first radial location pin has the insertion section of inserting described first opening and the location division be connected with described insertion section, described insertion section is positioned at that one end near described circumferential chain link, the sectional area of described insertion section successively decreases along direction from inside to outside, described position point is in the inner side of described insertion section, the first adjacent annular lock pin and the second annular lock pin is provided with in described first circumferential chain link, described first annular lock pin comprises: the first spigot surface, second annular lock pin comprises: the second spigot surface, described first spigot surface and described second spigot surface form the socket inserted for described insertion section, described location division has the second plane of orientation of the second annular lock pin described in the first plane of orientation of the first annular lock pin described in positioning supports and positioning supports.

9. folding bearing circle as claimed in claim 8, it is characterized in that, along the cross section of described first radial location pin, the shape of described insertion section is triangle, described first plane of orientation and described second plane of orientation are the straight line be connected with described leg-of-mutton base end points respectively, the radial direction at first wheel place described in described straight line parallel, the socket that described first spigot surface and described second spigot surface are formed is triangle, described first annular lock pin also comprises: be connected to the 3rd plane of orientation outside described first spigot surface, second annular lock pin also comprises: be connected to the 4th plane of orientation outside described second spigot surface, parallel described 4th plane of orientation of described 3rd plane of orientation and the radial direction at parallel described first wheel place.