CN2597323Y - Speed changeable bicycle chain shifting device - Google Patents

Abstract

The utility model discloses a chain toggle device of speed change bicycles which comprises a toggling device and a permanent seat which is fixed on the frame of the bicycle by clamping. The toggling device comprises a screw rod which can cross the groove of the permanent seat and which can be locked together with a screw cap and a protruding part. Loosing the screw cap can adjust the corresponding position of the toggling device and the permanent seat so as to adjust the position being suitable for the toggling chain. The retainer is provided with a pulley; the cable wire which is applied to tract the speeder can be wound on the pulley before being connected with the toggling device, which serves as the up pull controlling speed change or the cable wire is not wound on the pulley and directly adopts the down pull controlling speed change.

Description

Variable speed bicycle chain striking gear

Technical field

The utility model relates to a kind of chain striking gear of variable speed bicycle.

Background technology

General variable-ratio bicycle, its transmission principle is that chain is assemblied on the step sprocket wheel, the rider can operate as required and stir device and stir chain, chain is moved on one of them sprocket wheel of step sprocket wheel, changes transmission speed according to the difference of gear ratio.

It is a kind of device that is fixed on the bicycle skeleton that described traditional chain is stirred device, because the skeleton structure of different automobile types may be different, therefore traditional device of stirring is all at specific vehicle and design and installation, can not be applicable to other vehicle, therefore not only cause the trouble in design, the manufacturing thus, and manufacturing cost can improve also and not have an economy.

In addition, generally being used for controlling chain, to stir the mode of device be to connect a steel cable stirring on the device, and an end of steel cable then is connected in a controller, and the rider operates this controller and can make and stir the device action and stir chain; Described controller can be assembled in the higher position near handle, or is assembled on the lower bicycle skeleton.When controller is provided in a side of eminence, and stir device bonded assembly steel cable and must walk around a pulley and could be connected in controller again after with change of direction, therefore, traditional way be provided with in the appropriate location of skeleton a pulley for steel cable stride around; If controller is provided in a side of the skeleton of lower position, then do not need pulley; In other words, if the variable speed bicycle desire of not installing pulley with controller when lower is retrofitted to eminence, must install a pulley more in addition, thus trouble comparatively for the user of bicycle.

Summary of the invention

First purpose of the present utility model be solve because of have now variable speed bicycle striking gear comprised stirs device and permanent seat can't relatively move, and can't stir the problem of device position according to the needs adjustment of different automobile types.

Second purpose of the present utility model is to solve because of the striking gear that has variable speed bicycle now not install that pulley can not freely be selected steel cable upwards drawn or the problem of drop-down mode.

The utility model is provided with screw rod and teat stirring of chain striking gear on the device, on permanent seat, be provided with groove in addition, when stirring screw rod on the device and pass groove on the permanent seat, also this teat is contained in this groove simultaneously, be locked on this screw rod with nut then, combine fixingly with permanent seat thereby will stir device, and when unscrewing nut, then can adjust the relative position of stirring device and permanent seat.

The utility model is provided with a pulley on this fixer, the steel cable that is used for drawing change-speed box can be walked around to be connected in behind this pulley again and stir device, comes as pull-up control speed change, or does not make steel cable pile warp pulley and directly adopt pull-down control speed change.

According to design of the present utility model, permanent seat can be fixed on the bicycle skeleton, according to the needs of different automobile types, adjust the relative position of stirring device and permanent seat, make a kind of striking gear can be fit to multiple vehicle.

The utility model directly is provided with a pulley on the chain striking gear, the user can be arranged at eminence or lower with variable-speed controller according to individual demand, free selection will connect controller and the steel cable of stirring device stride around or do not stride around this pulley, thereby more convenient concerning the user.

Description of drawings

Fig. 1 is a perspective exploded view of stirring device and permanent seat syntagmatic of the present utility model.

Fig. 2 is the transparent view of stirring after device and permanent seat make up of the present utility model.

Embodiment transparent view when Fig. 3 is chain striking gear of the present utility model and the combination of bicycle skeleton.

Embodiment planar view when Fig. 4 is chain striking gear of the present utility model and the combination of bicycle skeleton.

Fig. 5 is that chain striking gear of the present utility model can be done lift adjustment at the bicycle skeleton

Embodiment planar gesture figure.

Fig. 6 is the chain striking gear of the present utility model that is installed in the bicycle skeleton, steel cable is striden be around in the embodiment plan view that pulley extends toward the top again.

Fig. 7 is the chain striking gear of the present utility model that is installed in the bicycle skeleton, steel cable is striden the embodiment planar gesture figure that is around in pulley and spurs toward the top.

Fig. 8 is the chain striking gear of the present utility model that is installed in the bicycle skeleton, with the embodiment plan view of steel cable directly past below extension.

Fig. 9 is the chain striking gear of the present utility model that is installed in the bicycle skeleton, with the embodiment planar gesture figure of steel cable directly past below pulling.Among the figure

(1) stirs device

(10) lug

(101) pivot

(11) interior plate

(12) outer panel

(13) space

(14) male member

(15) pedestal

(16) screw rod

(17) teat

(18) four-bar linkage

(181) first rod members

(182) second rod members

(183) the 3rd rod members

(184) the 4th rod members

(185) pivot

(186) nut

(187) pivot

(188) pivot

(2) permanent seat

(21) plate body

(22) groove

(23) ring

(231) lug

(232) through hole

(24) screw

(25) nut

(26) pulley

(3) bicycle skeleton

(4) steel cable

The specific embodiment

As shown in Figure 1, the most preferred embodiment of chain striking gear of the present utility model comprises and stirs a device 1 and a permanent seat 2; Wherein stir the similar inverted U-shaped of device 1 section and have an interior plate 11 and an outer panel 12, the upper end of described inside and outside side plate 11,12 links to each other and is provided with lug 10, and the chain (not shown) can be passed through in the space 13 that is constituted between inside and outside side plate 11,12.Described stir device 1 above a male member 14 is combined with lug 10 by pivot 101, male member 14 upper ends are also in conjunction with a pedestal 15, and are fixedly provided with a screw rod 16 and a teat 17 in the front of pedestal 15.Simultaneously with reference to Fig. 1 and shown in Figure 6, described male member 14 further is provided with one or four connecting rod assemblies 18, this four connecting rod assembly 18 comprises first rod member 181 and second rod member 182 that utilizes described screw rod 16 to be articulated, second rod member 182 articulates the 3rd rod member 183 with a pivot 187 again, 183 of the 3rd rod members articulate the described device 1 of stirring with pivot 188, stir 1 end that is articulated in first rod member 181 with pivot 101 of device.When first rod member 181 is subjected to stirring, simultaneously can interlock second rod member 182, the 3rd rod member 183 and 184 swings (as shown in Figure 7) of the 4th rod member, and then make and stir device 1 and move.

The structure of described permanent seat 2 is preferably one-body molded to go out a ring 23 and a plate body 21, and at plate body 21 groove 22 longitudinally is set, the equal diameters of the basic and described teat 17 of the width of this groove 22; A breach is set on described ring 23, be provided with lug 231 with through hole 232 in these breach both sides, after one screw 24 can being passed the through hole 232 of two lugs 231, thereby again with nut and screw 24 sealed breach closures with ring 23, therefore after this ring 23 can being linked in the appropriate location of bicycle skeleton, again screw 24 is cooperated nut locking, thereby permanent seat 2 is fixed on bicycle skeleton (as shown in Figure 3 and Figure 4).16 of described screw rods can pass the groove 22 of permanent seat 2, and teat 17 is contained in the groove 22 simultaneously, use nut 25 and screw rod 16 sealed again, thereby with permanent seat 2 with stir device 1 combine (as Fig. 2 and shown in Figure 4).Described ring 23 is fixedly provided with a pulley 26 that extends downwards

According to the above embodiments, after bicycle skeleton 3 is fixed in permanent seat 2 assemblings, can be fixing when block nut 25 with stirring device 1, and when needing adjustment to stir the position of device 1 because vehicle is different, then only need unscrew nut 25, just can be upper and lower mobile with stirring device, make screw rod 16 and teat 17 all move (as shown in Figure 5) along groove 22, when moving to the appropriate location,, fix with permanent seat 2 so that stir device 1 again with nut locking; The utility model utilizes screw rod 16 and teat 17 to penetrate the purpose of groove 22 simultaneously, is to be to prevent to stir between device 1 and the permanent seat 2 to produce relative rotation, and then guarantees to stir the stability of device 1.

As shown in Figure 6, described chain striking gear is by steel cable 4 controls, one end of steel cable 4 is with steel cable 4 clamp fittings when being locked together in the outside thread of pivot 185 by nut 186, the other end of steel cable 4 then is connected in the controller (not shown), this controller can be assembled in the higher position near the grip, or on the bicycle skeleton of lower position; When controller is located at eminence, in order to stir first rod member 181 when the operation control, steel cable 4 must be striden and is around in pulley 26, at this moment, each rod member that pulling just can drive four connecting rod assemblies 18 during steel cable 4 moves (as shown in Figure 7) simultaneously, thereby and then makes and stir device 1 and move and stir chain.

If Fig. 8 shows controller when being located at lower, then steel cable 4 does not need to stride around pulley 26, is connected to controller as long as steel ropes 4 directly extended toward belows; At this moment, when steel cable 4 was subjected to down pulling force, each rod member that equally also can drive four connecting rod assemblies 18 moved (as shown in Figure 9) simultaneously, thereby and then made and stir device 1 and move and stir chain.

The above only is in order to explain most preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model; so; be same as under the spirit of the present utility model; done relevant for any modification of the present utility model or change, all should be included in the category of the utility model intention protection.

Claims (2)

1. variable speed bicycle chain striking gear includes:

Stir device for one, it is combined with a pedestal, and this pedestal comprises a screw rod and a teat, and stirs device at this and be provided with four connecting rod assemblies;

One permanent seat, it has a plate body and a ring, and this plate body has a vertical groove, and this ring has breach, and these breach both sides are provided with the lug that possesses through hole, and this permanent seat is provided with a pulley;

Described screw rod can pass the groove of this permanent seat, and sealed with nut (25) and this screw rod, and this teat is contained in this groove, and it is relatively mobile with permanent seat to make this stir device when unscrewing this nut (25); Described ring can be sleeved on the bicycle skeleton, and passes the through hole of this two lug and cooperate nut that ring is locked in the bicycle skeleton with screw.

2. variable speed bicycle chain striking gear as claimed in claim 1, the diameter of wherein said teat equates with the width of described groove substantially.

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