CN2170917Y - Adjusting device for rear gearbox chain of bicycle - Google Patents

Abstract

The utility model relates to a pull wire adjusting device of a rear derailleur of a bicycle, particularly a pull wire adjusting device which can ensure the precision of positioning and variable speed control. The utility model is characterized in that the corresponding position of the side end of a rear derailleur main body is respectively provided with a fixed knob and an adjusting seat, wherein, one end of the adjusting seat forms with two opposite support frames, wherein, one support frame is screwed with the adjusting knob; a control pull wire respectively passes through the adjusting knob and a perforation of the other positioning support frame and is tightly tied on the fixed knob. When the adjusting knob is adjusted and displaced for tensioning or loosening the pull wire, because the angle of the pull wire between the fixed knob and the positioning support frame is fixed, the precision of positioning and variable speed control can be ensured.

Description

Adjusting device for rear gearbox chain of bicycle

The utility model relates to a kind of bicycle rear derailleur backguy setting device, it mainly is to set up fixing button separately and adjust seat at Rear Derailleur side relative position, adjust seat one end and be formed with two stands respectively, one is established one for spiral shell and is adjusted button, another is pertusate locating support, backguy one end is passed respectively adjust button, fixing button, and tighten on fixing button, because the fixed angle between fixing button and locating support, thereby when adjusting button control backguy tightness, being able to does not influence control accurately because of angle changes.

By Rear Derailleur is the main element that bicycle is reached the speed change purpose, be configured with a setting device at Rear Derailleur, in order to improve the backguy system in lax tired phenomenon through producing after the long-term use, its structure generally as shown in Figure 4, it mainly is to establish a lug 91 and fixing button 92 in the punishment of Rear Derailleur 90 body sides, wherein be formed with screw on the lug 91, swivel nut has one to adjust button 93 on it, this adjustment button 93 is to be a hollow to connect shape, pass for backguy 94, after these backguy 94 1 ends pass and adjust button 93, and be clamped on this fixing button 92, adjust button 93 1 ends again and be formed with screw thread, except that the confession swivel nut is on lug 91, but and mat its be screwed into the degree of lug 91, the degree of tightness of control backguy 94 and is reached the purpose of adjustment.

Be to adjust button 93 to be positioned at the combination form of lug 91 as shown in Figure 5 than the outside, adjust the backguy 94 that button 93 1 ends are not shored 91 of itself and lugs this moment, thereby backguy 94 this moment is to be in lax slightly state, under this state, had influence on the normal variable speed control of Rear Derailleur 90 as the relaxation of backguy system, then can screw out lug 91 outsides to suitable degree with adjusting button 93, owing to adjust button 93 and fixing button 92 non-being located along the same line, so when adjustment button 93 spiral shells go out, to simultaneously this section backguy 94 of 92 of itself and fixing buttons outwards be shored, then this backguy 94 will be tauted, to improve the relaxation of backguy system; Although and this device can see through the depth degree that adjustment button 93 spiral shells go out, with the lax tired phenomenon of change backguy system, yet the space that its adjustment process caused changes particularity and convenience in the time of may influencing control; As shown in Figure 5, before this adjustment button 93 is not adjusted, the angle that its medial extremity and fixing button are 92 is to be θ, button 93 to be adjusted screws out to lug 91 outsides, backguy 94 is outwards shored, then adjust the angle of 92 of button 93 medial extremitys and fixing buttons and will change into θ ', because the angle that this adjustment button 93 and fixing button are 92 significantly changes, difficulty reaches accurately in the time of will making adjustment, and will produce after adjusting that the inaccurate or running in location does not become smooth and easy and the shortcoming that produces noise, so these structures obviously remain thoroughly improvement.

Based on above-mentioned explanation as can be known, main purpose of the present utility model is at what: a kind of bicycle Hou change-speed box backguy setting device is provided, its be a kind of in the backguy adjustment process unexpected change adjust the setting device of angle between button and fixing button, mainly be to set up fixing button separately and adjust seat at Rear Derailleur side relative position, adjust seat one end and be formed with two stands respectively, one is established one for spiral shell and is adjusted button, another is pertusate locating support, make backguy one end pass the adjustment button respectively, fixing button, and tighten on fixing button, because the fixed angle between fixing button and locating support, thereby when adjusting button control backguy tightness, can, angle not influence control accurately because of changing.

The utility model provides a kind of bicycle rear derailleur backguy setting device, and it mainly is to be arranged with one at Rear Derailleur body side appropriate location to adjust a seat and a fixing button, it is characterized in that:

This adjustment seat one end has extended to form a support and a location support relatively, the adjustment button that swivel nut has hollow and two ends to be to connect shape on its medium-height trestle, locating support is formed with a perforation again, adjusts to divide for backguy in the perforation of button and locating support to pass, and backguy one end is clamped on the fixing button

Adjust the relative angle of seat and fixing button with said structure unlikely change in the backguy adjustment process.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is local appearance figure of the present utility model.

Fig. 2, Fig. 3 are action scheme drawing of the present utility model.

Fig. 4 is the planar view of existing Rear Derailleur.

Fig. 5 is the action scheme drawing of existing Rear Derailleur.

Relevant structure of the present utility model partly, please at first consult shown in Figure 1, it mainly is to be provided with fixing button 20 in the appropriate position of Rear Derailleur 10 sides, this fixing button 20 mainly is made up of a screw rod 21 and intermediate plate 22, it mainly is the end in order to clamp fitting backguy 30, Rear Derailleur 10 sides are installed with one and adjust seat 40 in the relative position place of fixing button 20 again, these adjustment seat 40 1 ends extend to form two relative support 41 and locating supports 42 respectively, be formed with a screw on its medium-height trestle 41, swivel nut has one to adjust button 43 on the screw, these adjustment button 43 two ends are to be hollow to connect shape, can pass for backguy 30, adjust button 43 1 ends again and be formed with outside thread 430, for swivel nut on support 41, be formed with perforation 420 again on the locating support 42, can pass for backguy 30, this backguy 30 is after passing adjustment button 43 and locating support 42 respectively, promptly be clamped on the fixing button 20 with this end, promptly finish the assembling of this backguy 30 with these combination forms, it is detailed in as described in following to adjust adjustment manner of execution of button 43 as for this:

At first see also shown in Figure 2, this adjustment button 43 is to be screwed into fully on the support 41, and go deep into its inboard, so the backguy 30 that support 41 and locating support are 42 is not adjusted button 43 medial extremitys and is shored, the backguy system that treats bicycle is after long-term use, when producing tired or relaxation, then as shown in Figure 3, the user can attempt adjusting button 43 and go out (spiral shell goes out degree to be decided on the relaxed condition of backguy system) to support 41 outside spiral shells, when adjusting button 43 back-out supports 41 to suitable degree, its medial extremity will make the backguy 30 that passes therebetween outwards shore simultaneously, and this phenomenon is about to cause backguy 30 tight, and reaches the purpose of improving backguy system relaxation.

Can find out concrete structure of the present utility model and adjusting control mode by above-mentioned explanation, and the characteristics place of the utility model maximum, be that this adjustment button 43 is in course of adjustment, at all change the relative angle of 20 of adjustment seat 40 and fixing buttons, as shown in Figure 2, before this adjustment button 43 is not adjusted, the angle that the locating support 42 of this adjustment seat 40 and fixing button are 20 is θ, and for example shown in Figure 3, when adjusting button 43 when support 41 screws out, the angle that the locating support 42 of adjustment seat 40 and fixing button are 20 still remains on the θ angle, and do not change, this mainly is because of this adjustment button 43 is at support 41 and 42 tightness of controlling backguy 30 of locating support, as for adjusting the relative angle of seat 40 with fixing button 20, then because of the restriction of locating support 42, and be maintained at fixed angle, no matter thereby adjust button 43 and how to adjust, adjust seat 40 all the time must and 20 of fixing buttons keep certain included angle, its the two angle promptly belongs to fixing, so it is accurate can not influence the control of backguy 30 because of the adjustment process of adjusting button 43.

Claims (1)

1, a kind of bicycle rear derailleur backguy setting device, it mainly is to be arranged with one at Rear Derailleur body side appropriate location to adjust a seat and a fixing button, it is characterized in that:

This adjustment seat one end has extended to form a support and a location support relatively, the adjustment button that swivel nut has hollow and two ends to be to connect shape on its medium-height trestle, locating support is formed with a perforation again, adjusts to divide for backguy in the perforation of button and locating support to pass, and backguy one end is clamped on the fixing button

The relative angle of seat and fixing button is adjusted in unlikely change in the backguy adjustment process.

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