CN2533050Y

CN2533050Y - Vertical tube wedge eccentric lockpin folding device for bicycle handlebar

Info

Publication number: CN2533050Y
Application number: CN 01280413
Authority: CN
Inventors: 贾新
Original assignee: Xiandai Science & Technology Development Co Ltd Economic District Shijiazhu
Current assignee: Xiandai Science & Technology Development Co Ltd Economic District Shijiazhu
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2003-01-29
Anticipated expiration: 2011-12-28

Abstract

The utility model relates to a standpipe wedge-type eccentric lockpin folding device for the handlebars of a folding bicycle. A wedge seat body and a shaft seat body are buckled with each other, wherein one side of the wedge seat body and one side of the shaft seat body are hinged in corresponding holes by a fixed pin shaft, and the other side of each of the wedge seat body and the shaft seat body and a T-shaped draw rod arranged at the vertical center of the fixed pin shaft are penetrated with gaskets in order. Both shaft ends of a lock shaft are arranged in flat holes of the shaft seat body, and a radial hole at the middle part of the lock shaft and a spring are coupled with a corresponding screw hole by threads. When an eccentric deflector rod is compressed, the lock shaft and the upper slope of a wedge with double ears can be pressed and cut, so the whole body is fastened. When the eccentric deflector rod is little loose, the lock shaft is pressed by the spring to move away, so the utility model can be opened freely. A regulating cushion is adopted in the utility model, so the self-locking performance is increased. The upper slope is designed to be from 20 DEG to 60 DEG, so the locking strength is increased.

Description

The eccentric lock pin folding device of a kind of cycle arm tube wedge type

The utility model relates to a kind of eccentric lock pin folding device of cycle arm tube wedge type that is used for Folding Bicycle.

The eccentric compression type folding device of stem sleeve pipe folding device that is used for Folding Bicycle in the existing technology is the most typical, sees figure (1), shown in (2).Among the figure, mutually the mesopore that fastens connects firmly the vertical free bearing (1) that connects firmly under the wedge pipe (13) with mesopore of the last twisted seat (2) of upright sleeve pipe (5) is locked by rationed marketing axle (3) in corresponding all axis holes on the left of it and tied, and sees figure (2); Its right side only in pull bar bearing pin (12) middle part of the following sold inside the country dress of the corresponding axis hole of free bearing (1) radially in the screw with fourth type pull bar (11) down thread end connect, see figure (1) (wherein fourth type pull bar (11) forms with vertical key-bolt admittedly for the transverse axis that is loaded on eccentric driving lever (9) axis hole in).The adjusting disk (16) of suit fourth type pull bar (11) is positioned at that (this mechanism is general Fast detachable unit, does not give unnecessary details between twisted seat (2) and the eccentric driving lever (9).) when using, turn fourth type pull bar (11) mixes up the wheelbase of eccentric driving lever (9) eccentric wheel and pull bar bearing pin (12) in advance, presses down eccentric driving lever (9) along arrow (6) tensile stress of its generation is incited somebody to action twisted seat (2) up and down, figure (1) is seen in (1) locking.Wherein, the spiral shell pull bar (14) that installs in wedge pipe (13) hole that following free bearing (1) mesopore connects firmly constitutes the upright locking mechanism (seeing the QB/T1715-93 standard) of general handle with drift (15) spiral marking connection, can sell to be loaded in the vertical tube of front fork; Last twisted seat (2) mesopore connect firmly with the upright interior suit handle riser of sleeve pipe (5) of the coaxial handle of wedge pipe (13) and by its port quick detach locked clip device, it is a general part, does not give unnecessary details.In the time must opening this device, eccentric driving lever (9) is upwards overturn along arrow (6), eliminate fourth type pull bar (11) tensile stress and make it loosening after, be that the axle center fourth type pull bar (11) that overturns is to the right horizontally gone in the upright open slot (10) of twisted seat (1) right side board by producing in the horizontal open slot of last twisted seat (2) (8) along arrow (7) direction with pull bar bearing pin (12) again, can will go up twisted seat (2) upset by arrow (4), see figure (1), shown in the middle long and two-short dash line of figure (2).Structure is a screw thread screwing type folding device shown in the figure (3), all the other structures with above-mentioned with, only right side double-screw bolt (20) is up and down respectively and nut locking bar (23), pull bar bearing pin (12) connects, along arrow (24) turn nut locking bar (23), incite somebody to action twisted seat (2) up and down by tommy bar (21), (1) locking.(arrow (22) is represented driving lever (21) but left and right sides slippage in the hole), this type of folding device was because simple in structure, and locking property is good, and is safe and reliable; Adopt General Construction, operation is convenient; Technology is good, and low cost and other advantages is existing to become widely used Folding Bicycle upright sleeve pipe folding device General Construction.But, because its structural restriction is difficult to realize less industrial design (being generally rectangular box-like) that partly overall appearance is inharmonious attractive in appearance to make handle riser; Owing to all pull driving lever when opening and closing, driving lever fourth type pull bar under loosening state easily produces rotation, so must often adjust, makes operation very not convenient; If eccentric driving lever is subjected to accidental shock power, the loosening possibility of opening is arranged, there is accident potential.

The purpose of this utility model provides a kind ofly improvedly can have the locking of tracking property rigidity, again in structure

On do not produce the eccentric lock pin folding device of loosening wedge-type, defective such as it can overcome slippage hidden danger in the existing technology effectively, and operation is not convenient, and especially outward appearance is inharmonious.

The utility model is achieved through the following technical solutions:

(1), its hole seat connect firmly the wedge block body (33) of upright sleeve pipe (5) and its hole seat are connected firmly wedge pipe (13) axle bed body (32) in its corresponding axis hole in left side by rationed marketing axle (3) hinge knot, after it fastened, wedge pipe (13) was with coaxial upright sleeve pipe (5);

(2), pin adorns eccentric driving lever (9) and installs packing ring (38) successively, respective center screw spiral marking connection on the left of fourth type pull bar (11) the screw thread axle head of lock shaft (39) middle part radial hole and spring (31) and the axle bed body (32), and with its horizontally set; Wherein, in the two flat holes (35) that are symmetrically distributed with fourth type pull bar (11) axis that lock shaft (39) two ends are plugged in axle bed body (32) right side;

(3), the aures unitas wedge (30) on the wedge seat (33) that is provided with of symmetrical fourth type pull bar (11) threaded shaft axis is by ramp (36) and lower inclined plane (40) formation that connects of arc with it, and ramp (36) can constitute the outer tangent plane of lock shaft (39) cylinder.

The utility model can also be achieved through the following technical solutions:

1, axle bed body (32), its gabarit pattern of wedge block body (33) is a gyro-rotor.

2, aures unitas wedge (30) ramp (36) angle of inclination beta of wedge block body (33) is more than or equal to 20 ° and smaller or equal to 60 °.

3, in axle bed body (32) two flat holes (35), go up bottom margin and be not more than bearing pin (39) two axial ends of 10 class precision running-fits and aures unitas wedge (30) ramp (36) and hob after, still have clearance C, and its value is not less than 2mm; Lock shaft (39) is opened and is given up the throne maximum opening H more than or equal to the maximum radius of turn R of aures unitas wedge (30).

4, packing ring (38) two ends, the left and right sides that are set between lock shaft (39) and the eccentric driving lever (9) are concave-curve, and wherein left concave arc and lock shaft (39) cylinder coincide, and right concave arc and eccentric driving lever (9) eccentric wheel cambered surface are coincide; And its material constitutes outer wrapping up in and is the compound material of high-strength engineering plastic in the metal.

The utility model owing to only need pull eccentric driving lever up and down and just can finish the folding of two pedestals and fold, is operated very convenient in opening-closing process; Because eccentric driving lever eccentric lock presses lock shaft to make it and aures unitas wedge ramp crush-cutting.(because inclined plane principle amplifies tens times with the axial force that produces), and the downward pressure of its generation is very large so that it locks intensity is big, can overcomes all gaps, and present fabulous connection rigidity; Because the inversion axis power that lock shaft produces is that self-lock force is so it is more safe and reliable for the fabulous eccentric driving lever generation of self-locking performance; Whole outward appearance takes the gyro-rotor pattern consistent with the handlebar Total tune.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof:

Figure (1) is that the eccentric compression type folding device of existing technology is in the cutaway view of figure (2) A-A; Figure (2) is that the B of figure (1) is to view; Figure (3) is existing technology screw thread screwing type folding device part sectional view; Figure (4) is that this practical figure (5) is in the B-B cutaway view; Figure (5) is that figure (4) is in the C-C cutaway view.

Below in conjunction with figure (4), (5) describe in detail according to specific structural details of the present utility model and service condition thereof.

Figure (4), in (5), corresponding axis hole is sold inside the country in the left side sets bearing pin (3) for wedge block body (33) that mutually fastens and axle bed body (32) up and down, and it is by jackscrew (42) tightening maintenance.Be in axle bed body (32) the symmetrical center line upper left side screw and install packing ring (38) successively, lock shaft (39), fourth type pull bar (11) the double-screw bolt end spiral marking connection of spring (31); Wherein, adopt the running-fit tolerance fit to pack in the two flat holes (35) of symmetrical distribution both sides in center horizontal lock shaft (39) two axial ends that installed by fourth type pull bar (11) of radial hole (for certain locking rigidity and precision are arranged, its back gauge height and diameter of axle tolerance fit are not more than 10 grades), this two flat hole (35) relative position length satisfies lock shaft (39) and presses range request; Spring (31) power normal pressure lock shaft (39) makes the eccentric wheel of the eccentric driving lever of packing ring (38) right-hand member arc normal pressure (9).Be symmetrically distributed in fourth type pull bar (11) double-screw bolt axis both sides wedge block body (33) collude shape aures unitas wedge (30) by the ramp that links to each other with inner arc (36) and with it the lower inclined plane (40) that connects of arc constitute.When moving to left, eccentric driving lever (9) spinning lock shaft (39) just can make it hob ramp (36), with wedge block body (33) and the powerful locking of axle bed body (32); In order to make the positive pressure on the ramp (36) produce bigger closed component and press journey to satisfy the eccentric wheel displacement, ramp (36) angle of inclination beta (seeing figure (4)) generally is designed to more than or equal to 20 ° and smaller or equal to 60 °, can open and close in the working process in reality like this, because of the maximum radius of turn R of aures unitas wedge (30) presses and to move lock shaft (39) and (see among the figure (4) shown in the long and two-short dash line along pulling release rear spring (31) on the arrow (41) smaller or equal to eccentric driving lever (9), its moving direction is seen shown in the arrow (37)) to maximum apothem H, so wedge block body (33) can (be seen figure (4) for the axle center along the free folding of arrow (34) by rationed marketing axle (3), (5) shown in the long and two-short dash line), to satisfy the operation requirements of 180 ° of upset degree.When folding device is in closure state, with the upright sleeve pipe (5) of the handle that connects firmly in the seat of wedge block body (33) hole and with axle bed body (32) hole seat in the wedge pipe (13) that connects firmly be in coaxial state.Wherein, interior upright sleeve pipe (5) with universal standard wedge surface structure, install the upright mechanism of general handle, do not give unnecessary details; The general wedge surface structure of drawing screw rod (13) threaded shaft client link drift (15) to constitute that installs in the wedge pipe (13) by wedge block body (33) hole, rank stop bit is anchored on vertical tube of front fork interior (in order to increase intensity herein, cooperating internal diameter to be designed to ￠ 25.4mm it).In order to increase the face of touching, concave arc is offered at packing ring (38) two ends, wherein left end concave arc and lock shaft (39) cylinder coincide, and the eccentric wheel of right-hand member concave arc and eccentric driving lever (9) coincide; In order to increase self-lock force, composite material is adopted in packing ring (38) design, its outside corrosion-resistant steel sleeve, the injection mo(u)lding of interior filling high-strength engineering plastic.Further specify: in order to strengthen the locking rigidity and to open conveniently,, be for closure is pressed into convenient design, its bevel angle design is generally about 45 ° and can satisfies the lower inclined plane (40) of aures unitas wedge (30) through experiment; In order not interfere lock shaft lock (39) to be pressed onto position (seeing figure (5)), certain clearance C should be arranged, this value generally is not less than 2mm and can satisfies.Because members such as bicycle handle bar are the gyro-rotor pattern, the special revolution build that with this type exterior design is as schemes (5), coordination attractive in appearance so on the whole.

The working process principle of this type reality is all simpler, as figure (4), (5) be depicted as it and fasten locking state, eccentric hereat driving lever (9) eccentric wheel eccentric lock pressure pad circle (38), lock shaft (39) hobs aures unitas wedge (30) ramp (36) of (overcoming spring (31) power) wedge block body (33), make fourth type pull bar (11) thus the coupling mechanism force that the tensile stress that produces becomes the inclined-plane fastens wedge block body (33) and axle bed body (32) are powerful.The model machine checking, it locks good rigidly; Because self-locking performance is very good, safe and reliable on its structure.In the time must opening, only eccentric driving lever (9) is upwards pulled along arrow (41), at spring (31) power and ramp (36), under lock shaft (39) the cylinder effect, can force lock shaft (39) to retreat to maximum opening H (right side, flat hole (35) still has clearance) along arrow (37); Because aures unitas wedge (30) be that the maximum radius of turn R in axle center is smaller or equal to H, so border wedge block body (33) can freedom overturn left along arrow (34) and open (can reach 180 ° of corners) and see figure (4), (5) long and two-short dash line with rationed marketing axle (3).Find out that by above-mentioned it has extraordinary operability.Because cutting shape substantially, it can essence cast type (stock left for machining is little), so it has broad application prospects on folding bicycle so its good manufacturability is aesthetic in appearance.

Claims

1, the eccentric lock pin folding device of a kind of cycle arm tube wedge type, comprise the upright sleeve pipe (5) of coaxial up and down handle, the drift (15) of wedge pipe (13) and interior spiral shell pull bar (14) spiral marking connection thereof, the rationed marketing axle (3) of hinge knot two pedestals, fourth type pull bar (11) with eccentric driving lever (9) pin dress is characterized in that:

2, folding device as claimed in claim 1 is characterized in that axle bed body (32), and its gabarit pattern of wedge block body (33) is a gyro-rotor.

3, folding device as claimed in claim 1, aures unitas wedge (30) ramp (36) angle of inclination beta that it is characterized in that wedge block body (33) is more than or equal to 20 ° and smaller or equal to 60 °.

4, folding device as claimed in claim 1, after it is characterized in that in axle bed body (32) two flat holes (35) bottom margin is not more than bearing pin (39) two end axles of 10 class precision running-fits and aures unitas wedge (30) ramp (36) and hobs, still have clearance C, and its value is not less than 2mm; Lock shaft (39) is opened and is given up the throne maximum opening H more than or equal to the maximum radius of turn R of aures unitas wedge (30).

5, folding device as claimed in claim 1, packing ring (38) two ends, the left and right sides that it is characterized in that being set between lock shaft (39) and the eccentric driving lever (9) are concave-curve, wherein left concave arc and lock shaft (39) cylinder coincide, and right concave arc and eccentric driving lever (9) eccentric wheel cambered surface are coincide; And its material constitutes outer wrapping up in and is the composite material of high-strength engineering plastic in the metal.