CN2498056Y

CN2498056Y - Folding structure for bicycle frame

Info

Publication number: CN2498056Y
Application number: CN 01229851
Authority: CN
Inventors: 赖存义
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-06
Filing date: 2001-07-06
Publication date: 2002-07-03
Anticipated expiration: 2011-07-06

Abstract

The utility model provides a bicycle frame folds back structure comprises a footstock, a base, a lock group, a locating pin, a fixed pin, two springs and an adjusting screw. The top seat is in the shape of an n-shaped body, two clamping grooves are cut upwards on two sides of the top seat, two lugs are arranged at the tail end of the top seat in an extending mode, a positioning hole is arranged at the front section of the right side edge of the top seat, a guide groove is arranged below the positioning hole, a clamping groove is arranged at the front edge of the top seat, the base seat is in a shape corresponding to the top seat, the tail end of the base seat is bent into a long ring wall, a U-shaped groove is arranged at the other end of the base seat in a cutting mode and then bent upwards into two left and right ring walls which are arranged in parallel, two convex blocks are arranged at the middle sections of the two sides of the base seat in an extending mode, the buckling group is provided with a whistle-shaped.

Description

Bicycle skeleton Folding structure

The utility model relates to the structure technology of bicycle, is a kind of bicycle skeleton Folding structure.This structure is provided with the footstock and the base that can cover mutually, and can be by the locating effect of a locating dowel pin and a fastening group, the effect that makes a bicycle skeleton Folding structure can reach strong fix and locate fast.

The Folding Bicycle skeleton connected structure of commonly using, common person its be substantially establish can cover mutually cover the seat and base, this covers a top and the base bottom is welded the welded pipe that is provided with the bicycle skeleton respectively, be provided with a groove and cover seat, both sides, groove top are provided with footstock, make and form and cover the corresponding groove of seat in the footstock, and the pertusate lug of the terminal formation of the side plate that covers a both sides, for wearing a pivot, and borrow pivot and make base one side link with footstock, and base in addition side be provided with one and wear axle and be used to articulate a snap-fastener; Be characterized in covering the suitable breach of establishing on the side plate, and the breach limit is established the card of a turnover and is lifted protuberance, and continue and establish a positioning groove, and the base plate two side ends of base is rolled up respectively and is set as end limit loop-drive plate and outer arc girth sheets, form knock hole in this outer arc girth sheets, and in its middle section formation short slot, and short slot root edge place inwardly reels and form the inner arc girth sheets, and form a through hole in the inner arc girth sheets, and on base bilateral wall, form translot and perforation corresponding to inner arc girth sheets through hole, make wearing in the knock hole that axle sleeve penetrates the outer arc girth sheets of base whereby, and the threaded portion of snap-fastener screw rod bottom can be locked in the screw of wearing axle sleeve, establishes the through hole that penetrates and pass the inner arc girth sheets in the perforation of a locating dowel pin by one of base sidewall again, and is passed by the translot of another sidewall, place the side face of locating dowel pin again with an end hook of a spring, and its in addition end be fixedly arranged on the outer arc girth sheets and be added on fixedly, and then can operate locating dowel pin and snap-fastener, finish the fixing of its level and vertical direction, yet this structure still has following shortcoming:

1, covers too complexity of seat and understructure, and increase its procedure of processing, make that producing man-hour elongates;

2, must go through locating dowel pin during its actual binding operation and break away from footstock positioning groove and snap-fastener and pull the step of two sections of rotations etc. and can finish, this process is real non-very simple and easy quick.

The purpose of this utility model is to propose a kind of bicycle skeleton Folding structure, this structure will more become to simplifying than existing technology, not only reduce spare part quantity and processing built-up time, cost-cutting, more be to have simplified operating process and step, provide a kind of bicycle skeleton Folding structure of more quick and convenient.

Later-model main technical schemes of this practicality and characteristics are: this bicycle skeleton Folding structure comprises that mainly a footstock, a base, a fastening group, a locating dowel pin, a set pin, two springs and a plus-minus screw constitute.Wherein, this footstock is generally to be ∏ shape body, its dual-side is upwards cut and is provided with two draw-in grooves, and both-side ends extends two lugs of tool open-work, and offers a knock hole in footstock right edge leading portion, cut in the knock hole below simultaneously and establish an inclined-plane guide groove, and be arranged with a я shape fixing slot in the footstock leading edge; This base is the shape for the footstock that is involutory, its terminal one Cheng Yichang circle wall that bends inwards, and base also upwards is bent into two juxtaposed left and right circle walls after a U-lag is established in end-grain cutting in addition, and the wall outer end is enclosed on a left side sealed, and its stage casing, base both sides outwards extends two projections; This fastening group is to establish a whistle shape Button Handle, and its head is provided with eccentric jack-post, articulates a screw rod on this jack-post, and screw rod side in addition then wears a pad, in regular turn and compresses a piece and a spring, and this compresses the piece dorsal part and cuts and be provided with radial groove; This locating dowel pin be to be provided with an open-work thereon, and its length slightly is longer than the base width;

By being pivoted of above-mentioned member, pass footstock two lug open-works with set pin, base length is enclosed wall and is given rivet clasp, make footstock and base elder generation joining line, then from the right circle wall outside successively inserting spring and locating dowel pin in about enclose within the walls, and place an end of spring with fastening group screw rod, pass the locating dowel pin perforation from the base front side, and establish a plus-minus screw in the terminal spiral shell of screw rod, and then can press down footstock, make the inclined-plane guide groove of locating dowel pin termination from footstock knock hole below, slip into and finish the location in the knock hole, and continue to pull and move its fastening group of operation, make screw rod be positioned the footstock fixing slot, footstock and base packing are fixed by Button Handle by pressing simultaneously, and made a bicycle skeleton Folding structure can reach strong fix and fixing fast effect.

Major advantage of the present utility model is, its structure will more become to simplifying than existing technology, not only reduce spare part quantity and processing built-up time, cost-cutting, more be to have simplified operating process and step, provide a kind of bicycle skeleton Folding structure of more quick and convenient.

In order to describe structure of the present utility model in detail, do following explanation now in conjunction with the accompanying drawings and embodiments:

Fig. 1 is a three-dimensional appearance scheme drawing of the present utility model.

Fig. 2 is a stero scheme drawing of the present utility model.

Fig. 2 A is Fig. 2 A of the present utility model portion edge-on body scheme drawing in addition.

Fig. 2 B is Fig. 2 B of the present utility model portion edge-on body scheme drawing in addition.

Fig. 3 is the three-dimensional appearance scheme drawing of footstock of the present utility model and base opening.

Fig. 4 is an action scheme drawing of the present utility model.

Fig. 5 is the embodiment scheme drawing that the bicycle skeleton is located in the utility model weldering.

Figure number explanation: 10 footstocks, 11 draw-in grooves, 12 lugs, 13 open-works, 14 knock holees, 15 guide grooves

16 fixing slots, 20 bases, 21 long circle wall 22U shape groove 23 left side circle walls 24 right circle walls

25 projections, 30 fastenings are organized 31 Button Handles, 32 jack-posts, 33 screw rods, 34 pads 35 and are compressed piece

36,42 springs, 37 grooves, 40 locating dowel pins, 41 perforation, 50 set pins, 60 plus-minus screws

Shown in Fig. 1,2,2A, 2B, 3, structure of the present utility model mainly comprises: a footstock 10, a base 20, a fastening group 30, a locating dowel pin 40, a set pin 50, two springs 36,42 and a plus-minus screw 60 constitute.Wherein, this footstock 10, be generally to be ∏ shape body, its dual-side is upwards cut and is provided with two draw-in grooves 11, and both-side ends extends two lugs 12 of tool open-work 13, and offer a knock hole 14 in footstock 10 right edge leading portions, cut in knock hole 14 belows simultaneously and establish an inclined-plane guide groove 15, and be arranged with a я shape fixing slot 16 in footstock 10 leading edges; This base 20, it is shape for the footstock 10 that is involutory, its terminal one Cheng Yichang circle wall 21 that bends inwards, and base 20 is after a U-lag 22 is established in end-grain cutting in addition, also upwards be bent into two juxtaposed left and

right circle walls

23,24, and wall 23 outer ends are enclosed on a left side sealed, and its stage casing, base 20 both sides outwards extends two projections 25; This fastening group 30, be to establish a whistle shape Button Handle 31, its head is provided with eccentric jack-post 32, articulates a screw rod 33 on this jack-post 32, screw rod 33 sides in addition then wears a pad 34, in regular turn and compresses a piece 35 and a spring 36, and this compresses 35 dorsal parts and cuts and be provided with radial groove 37; This locating dowel pin 40 be to be provided with an open-work 41 thereon, and its length slightly is longer than base 20 width;

By being pivoted of above-mentioned member, pass footstock 10 2 lugs 12 open-works 13, base 20 long circle walls 21 and give rivet clasp with set pin 50, make footstock 10 and base 20 first joining lines, then enclose wall 24 outsides priority inserting spring 42 and locating dowel pin 40 from the right side in left and

right circle wall

23,24, and organize the end that 30 screw rods 33 place spring 36 with fastening, pass locating dowel pin 40 perforation 41 from base 20 front sides, and establish a plus-minus screw 60, constitute structure of the present utility model in screw rod 33 terminal spiral shells.

As Fig. 4 and Fig. 1--shown in 3, at skeleton in conjunction with fixedly the time, with footstock 10 to base 20 pressings, make the inclined-plane guide groove 15 of locating dowel pin 40 terminations from footstock 10 right edge leading portion root edge knock holees below, slip in the knock hole 14,10 liang of side bayonet slots 11 of footstock this moment are embedded in 20 liang of projections 25 of base, then with Button Handle 31 to footstock 10 left side translations, and Jing upwards revolves Button Handle 31 to move 90 degree, allows screw rod 33 screw in the fixing slot 16 of footstocks 10, and this moment, locating dowel pin 40 was subjected to shoring of spring 42, and make screw rod 33 displacement to the right of interlock, and be fastened in the fixing slot 16, then, promptly borrow dorsal part to cut the piece 35 that compresses that is provided with radial groove 37 and compel to be fixed in footstock 10 end faces again with eccentric downwards rotation 90 degree of Button Handle 31, and because 37 orders of radial groove compress piece 35 and footstock 10 contact surface Mo Chali increasing, for locating effect.In addition, the plus-minus screw 60 of screw rod 33 ends is rich in the functions of fine setting screw rods 33 operation major diameters, is convenient to operation and suitable safety location tightness to make fastening group 30 reach; When launching this structure, Button Handle 31 is rotated up 90 degree it is got loose, and screw rod 33 pulled left, forward move, be subjected to locating dowel pin 40 terminations of its interlock to break away from the knock hole 14 of footstock 10 with order, and then screw rod 33 moved 90 degree to backspin, just can upwards dig footstock 10 and carry out the folding action.

Fig. 5 is a practical example scheme drawing of the present utility model, the overall appearance when demonstrating it and being welded on the bicycle skeleton.

Claims

A kind of bicycle skeleton Folding structure mainly is made of a footstock, a base, a fastening group, a locating dowel pin, a set pin, two springs and a plus-minus screw; It is characterized in that: this footstock is generally to be ∏ shape body, and its dual-side is upwards cut and is provided with two draw-in grooves, and both-side ends extends two lugs of tool open-work, and offer a knock hole in footstock right edge leading portion, cut in the knock hole below simultaneously and establish an inclined-plane guide groove, and be arranged with a я shape fixing slot in the footstock leading edge; This base is the shape for the footstock that is involutory, its terminal one Cheng Yichang circle wall that bends inwards, and base also upwards is bent into two juxtaposed left and right circle walls after a U-lag is established in end-grain cutting in addition, and the wall outer end is enclosed on a left side sealed, and its stage casing, base both sides outwards extends two projections; This fastening group is to establish a whistle shape Button Handle, and its head is provided with eccentric jack-post, articulates a screw rod on this jack-post, and screw rod side in addition then wears a pad, in regular turn and compresses a piece and a spring, and this compresses the piece dorsal part and cuts and be provided with radial groove; This locating dowel pin be to be provided with an open-work thereon, and its length slightly is longer than the base width; Pass footstock two lug open-works, base long circle wall and give rivet clasp with set pin, make footstock and base elder generation joining line, then from the right circle wall outside successively inserting spring and locating dowel pin in about enclose within the walls, and place an end of spring with fastening group screw rod, pass the locating dowel pin perforation from the base front side, and establish a plus-minus screw in the terminal spiral shell of screw rod, and then press down footstock, make the inclined-plane guide groove of locating dowel pin termination from footstock knock hole below, slip into and finish the location in the knock hole, screw rod is positioned the footstock fixing slot, presses and by Button Handle footstock and base packing is fixed.