CN2163132Y

CN2163132Y - Bicycle front fork shock absorber

Info

Publication number: CN2163132Y
Application number: CN 93215228
Authority: CN
Inventors: 张武松
Original assignee: SHENLI METAL MANUFACTURING CORP
Current assignee: SHENLI METAL MANUFACTURING CORP
Priority date: 1993-06-16
Filing date: 1993-06-16
Publication date: 1994-04-27
Anticipated expiration: 2003-06-16

Abstract

The utility model relates to a fork foot damping device for the front forks of bicycles a buffering and damping device is mainly arranged in a front fork tube to achieve buffering effect and reduce abrasion. The components of the buffering and damping device have no weld mark. Therefore, the utility model has the advantages of simple processing step and low processing and manufacturing cost.

Description

Bicycle front fork shock absorber

The utility model relates to a kind of bicycle front fork shock absorption device, is primarily aimed to commonly use the bicycle shock absorption device and can't exempt the work programme of welding and design-calculated.

Regular Bicycle be weight light and advance between do not produce the vehicle of pollution, in modern society, bicycle has become the important leisure vehicle, similarly beats because of Uneven road between advancing for solving bicycle, produce reforming phenomena, thereby need the bicycle shock absorption device.

On bicycle in the past, shock absorption device for stationary bicycle, often give welding in the upper and lower fork pin and establish permanent seat (figure does not show), must be undertaken by a fixed routine when assembling, bring inconvenience, welding job often must polish the weldering trace again, polish, or, repeat processing, the tooling cost height in inner palpus boring.

The main purpose of this creation is the shortcoming at above-mentioned bicycle shock absorption device, and a kind of processing and stack-mounted bicycle shock absorption device be convenient to is provided; It comprises coil spring, elastic ring cushion in order to damping, and other cooperates the design of guide securement screw rod, recoil spring, buffering ring pad, and it is more convenient to make in the assembling.

Bicycle front fork shock absorption device of the present utility model mainly is the inner installing of the breeches pipe damping device at the front fork pin, comprising:

One spring perch blind nut is provided with screw thread in outer peripheral edges, and the center is offered a sealing inner bolt hole;

One guides bar into, is a stock cylinder, and the top forms an outside thread, is fixed at described spring perch blind nut center screw;

One coil spring is set on described guiding in the bar, and the spring perch blind nut is stated on its top against the residence, and passes for guiding bar into;

At least one elastic ring cushion, it is the annular elastomeric of a tool centre hole, centre hole can pass for the described bar of guiding into;

At least one positioning seat, it is the ring body with last lower flange, and its center is established a through hole and passed for the described bar of guiding into, is used for described elastic ring cushion and coil spring location, coil spring bottom places on the positioning seat, in order to avoid elastic ring cushion and coil spring are subjected to displacement after stressed.

Pitch pin on one, it is a tubular body, and an end is established negative thread for described spring perch blind nut locking, holds above-mentioned each assembly in it;

Once fixed plug ring is a hollow tube, and an end is established an arc groove and closed in the described fork foot bottom of going up to roll, and the other end is established negative thread;

Axle bush once, it is the ring-type body, opens a vertical long opening on the body and is beneficial to the described fixed plug ring down of fit;

The fixing plug screw of axle bush once, it is the ring body of tool centre hole, and anchor ring is provided with outside thread and is fixed in the described fixed plug ring down, and bottom flange just can lean described axle bush down;

One guide securement screw rod, the one end forms plate-like, and in order to lean each assembly on the described positioning seat, an end has outside thread;

One buffering ring pad, it is a ring body, and ring body is built-in with described guide securement screw rod, and an end relies on the plate-like end of guide securement screw rod, and the other end is resisted against fixedly plug screw of described axle bush down;

One recoil spring forms spiral fashion, also places in the described buffering ring pad;

Its interior internal thread hole that forms of one lower fork pin is for the solid described guide securement screw rod of spiral shell;

The described bar of guiding into runs through described coil spring positioning seat and elastic ring cushion, inserts in the centre hole of described guide securement screw rod;

Described guide securement screw rod passes fixedly plug screw of described buffering ring pad, recoil spring, following axle bush, is fixed at the tapped bore of described lower fork pin.

Effect of the present utility model, the utility model are utilized the more piece buffering ring pad and the fixed form that is spirally connected, and obtain damping effect preferably, and are convenient to assembling, have avoided welding sequence and corresponding subsequent handling thereof during the bicycle shock absorption device is made in the past, reduce production costs.

Be described with reference to the accompanying drawings as follows:

Fig. 1: bicycle front fork shock absorption device three-dimensional combination figure of the present utility model.

Fig. 2: bicycle front fork shock absorption device three-dimensional exploded view of the present utility model.

Fig. 3: bicycle front fork shock absorption device section-drawing of the present utility model.

As shown in the figure, bicycle front fork shock absorption device of the present utility model mainly is to install shock absorber in front fork tube, comprising:

Spring perch blind nut 11, its outer peripheral edges are provided with screw thread 111, and are solid on last fork pin 17 with spiral shell, and a sealing inner bolt hole 112 is offered in the center, and is solid for guiding bar 12 spiral shells into;

Guiding bar 12 into is a major axis cylinder, the top forms an outside thread 121 and is fixed at spring perch blind nut 11 center screws 112, and run through coil spring 13,

positioning seat

14,14 ', 14 ",

elastic ring cushion

15,15 ', 15 ", the bottom also inserts in guide securement screw rod 21 centre holes 212, a flange 122 is established in the tail end appropriate location, be matched with in the centre hole 212 of standing screw, in case described elastic ring cushion landing;

Against living spring perch blind nut 11, the bottom places on the positioning seat 14 coil spring 13 in the top, and passes for guiding bar 12 into;

Positioning

seat

14,14 ', 14 "; for having the ring body of last lower flange; its center is established a through hole 141 and passed for guiding bar 12 into; positioning seat 14; 14 ', 14 " be used to locate

elastic ring cushion

15,15 ', 15 ", retrodeviate to moving in order to avoid elastic ring cushion 15 is stressed, by the positioning seat 14 of coil spring 13 1 ends also can for coil spring 13 against;

Elastic ring cushion

15,15 ', 15 ", be the annular elastomeric of tool centre hole 151, centre hole 151 can pass for guiding bar 12 into, by positioning

seat

14,14 ', 14 " positioned at intervals;

Last fork pin 17 is a body, and an end is established negative thread 171 ammunition feed spring abutment blind nuts 11 and is spirally connected, and other end combination is fixed plug ring 18 down, can hold above-mentioned each assembly in it;

Following fixed plug ring 18 is a hollow tube, one end is established an arc groove and is closed in last fork pin 17 bottoms to roll, and the other end is established negative thread 181, and fixedly plug screw 25 spiral shells are solid for following axle bush, following fixed plug ring body and cover axle bush 24, the friction when going up 17,26 motions of lower fork pin to lower;

Following axle bush 24 is a ring-type body, when opening a vertical long opening 241 on the body and being beneficial to move in the tube air flow out and the prevention pad expands and extends, base abuts is in the fixing plug screw 25 of following axle bush;

Following axle bush is plug screw 25 fixedly, is the ring body of a tool centre hole 251, and anchor ring is provided with screw thread 252, and it is fixed at down in the fixed plug ring 18, and bottom flange just can lean down axle bush 24, passes in it and for guide securement screw rod 21;

Guide securement screw rod 21, one ends form plate-like 211, in order to lean

elastic ring cushion

15,15 ', 15 ", positioning seat 14; 14 ', 14 " go up each assembly, one end also is fixed at the internal thread hole 261 of lower fork pin 26, and pass buffering ring pad 22, recoil spring 23, and following axle bush is plug screw 25 fixedly;

Buffering ring pad 22 is a hollow ring body, relies on the plate-like end 211 of guide securement screw rod 21, and the other end is resisted against down fixedly plug screw 25 of axle bush, and recoil spring 23 and guide securement screw rod 21 are arranged in the ring body;

Recoil spring 23 forms spiral fashion, places in the buffering ring pad 22, and passes for guide securement screw rod 21, in order to work the buffer action that goes up fork pin 17 up-down vibration;

The lower fork pin 26 inner internal thread holes 261 that form are for the solid guide securement screw rod 21 of spiral shell;

Form damping device by above-mentioned member, to reach assembling facility and damping effect.

In addition, in the prong place of lower fork pin 26 be that wear reduction and anti-dustiness are provided with that dust protecting cap 31, C type buckle 32, oil sealing 33, go up axle bush 34, oil sealing 33 purposes are for making the shock absorption device lubricating oil of can packing into, last axle bush 34 is an abrasive resistant material, can lower the friction between upper and

lower breeches pipe

17 and 26 tube walls, dust protecting cap 31 enters in the breeches pipe in order to prevent the dust foreign material, and the C type is buckled and is fixedly oil sealing 33 and upward axle bush 34 usefulness.

Claims

1, a kind of bicycle front fork shock absorption device mainly is the inner installing of the breeches pipe damping device at the front fork pin, it is characterized in that:

At least one positioning seat, it is the ring body with last lower flange, and its center is established a through hole and passed for the described bar of guiding into, is used for described elastic ring cushion and coil spring location, coil spring bottom places on the positioning seat, in order to avoid elastic ring cushion and coil spring are subjected to displacement after stressed;

Once fixed plug ring is a hollow tube, and an end is established an arc groove and closed in the described fork foot bottom of going up to roll, and the other end is established negative thread; Axle bush once, it is the ring-type body, opens a vertical long opening on the body and is beneficial to the described fixed plug ring down of fit;