CN210162200U

CN210162200U - Folding bicycle frame

Info

Publication number: CN210162200U
Application number: CN201921145307.5U
Authority: CN
Inventors: 刘微
Original assignee: Tianjin Ruian Bicycle Co Ltd
Current assignee: Tianjin Ruian Bicycle Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-03-20
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a folding bicycle frame, including mutual articulated girder and auxiliary girder, the welding of auxiliary girder one end has the back vent, and the auxiliary girder top yell hungry engine oil seat section of thick bamboo, and a seat section of thick bamboo inside is equipped with the spring, the spring top is put and is equipped with the support column, and the support column top has the cushion through the screw fixation, the support column lateral wall articulates there is the connecting rod, and the connecting rod bottom articulates there is the trundle, the welding of trundle bottom has the slider, and opens the slider both sides has the jack that link up, the jack inner wall is pegged graft and is had positioning bolt, the welding of seat section of thick bamboo lateral wall top department has the horizontal bar, and open at the horizontal bar top has the spout with slider looks adaptation, logical. The utility model discloses change the holding power of cushion into the extrusion stress between positioning bolt and the nut groove, compare the fixed mode of tradition, fixed effect is better, can not appear riding for a long time and lead to the condition of cushion landing, can provide certain cushioning effect for riding passerby, and the travelling comfort is promoted.

Description

Folding bicycle frame

Technical Field

The utility model relates to a bicycle technical field especially relates to a folding bicycle frame.

Background

Bicycles, also known as bicycles or bicycles, are typically two-wheeled small land vehicles. After a person rides the bicycle, the folding bicycle is a green and environment-friendly vehicle powered by pedaling, and is popular among consumers due to the characteristic of convenient carrying and storage.

The cushion height of common folding bicycle all is adjustable, but its fixed mode all utilizes the bolt extrusion support column lateral wall basically for support column and a seat section of thick bamboo are died because of the frictional force card, and the condition of cushion landing very easily appears after such cushion structure is ridden for a long time again, and the fixed stability of cushion remains to be improved, and rigid connection when common folding bicycle cushion in addition and automobile body, the impression of riding when meetting the rugged road surface is also relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a folding bicycle frame.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a folding bicycle frame comprises a main beam and an auxiliary beam which are hinged with each other, wherein one end of the auxiliary beam is welded with a rear fork, the top of the auxiliary beam is hungry to form a machine oil seat cylinder, a spring is arranged inside the seat cylinder, a supporting column is arranged at the top of the spring, a cushion is fixed at the top of the supporting column through a screw, a connecting rod is hinged to the side wall of the supporting column, a short stick is hinged to the bottom end of the connecting rod, a sliding block is welded at the bottom end of the short stick, through holes are formed in two sides of the sliding block, positioning bolts are inserted into the inner walls of the through holes, cross bars are welded at the top of the side wall of the seat cylinder, a sliding groove matched with the sliding block is formed in the top of the cross bars, through grooves are formed in two sides of the sliding groove, nut grooves are distributed at equal intervals and are formed in the outer walls of the through grooves, and the sleeve inner wall is connected with the handlebar through the bearing, the welding of handlebar bottom has the front fork.

Preferably, the bottom of the transverse bar is fixed with an installation rod through a screw, and the bottom of the installation rod is welded with an arc-shaped seat.

Preferably, the front fork and the bottom of the arc seat are both fixed with a mudguard through screws, and the mudguard is of an arc-shaped structure.

Preferably, the specification of spring and the specification looks adaptation of a seat section of thick bamboo, and the spring top is equipped with the roof, support column sliding connection is in a seat section of thick bamboo inner wall.

Preferably, the handle sleeves are sleeved at the two handles of the handlebar, and the outer walls of the handle sleeves are provided with anti-slip threads.

Preferably, the main beam and the sleeve are of an integrally formed structure, and the auxiliary beam, the rear fork, the seat barrel and the cross bar are of an integrally formed structure.

The utility model has the advantages that:

1. through a seat section of thick bamboo, the support column, the connecting rod, the setting of slider and horizontal bar, realize the function that the cushion height can be adjusted to horizontal adjustment slider position, utilize behind the positioning bolt fixed slide block, the cushion is located the support column, the top of the triangle-shaped of connecting rod and horizontal bar formation, stability is strong, it is fixed that traditional cushion relies on the frictional force, this frame changes the holding power of cushion into the extrusion stress between positioning bolt and the nut groove, compare traditional fixed mode, fixed effect is better, the condition that can appear riding for a long time and lead to the cushion landing.

2. The inside spring that is provided with of seat section of thick bamboo, the support column is put and is established at the spring top, and when the road surface condition is comparatively rugged and rugged, through the effect of spring, also can provide certain cushioning effect for riding passerby, the travelling comfort is compared traditional folding bicycle and is promoted.

Drawings

Fig. 1 is a schematic structural view of a foldable bicycle frame according to the present invention;

fig. 2 is a schematic structural view of a secondary beam and a rear fork of a foldable bicycle frame according to the present invention;

fig. 3 is a schematic view of a structure of a cushion portion of a foldable bicycle frame according to the present invention.

In the figure: the bicycle comprises a main beam 1, a secondary beam 2, a sleeve 3, a handlebar 4, a front fork 5, a mudguard 6, a rear fork 7, a seat tube 8, a spring 9, a support column 10, a cushion 11, a connecting rod 12, a short rod 13, a slide block 14, a cross bar 15, a through groove 16, a nut groove 17, a positioning bolt 18, a mounting rod 19, an arc seat 20 and a pedal hole 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a folding bicycle frame comprises a main beam 1 and a secondary beam 2 which are hinged with each other, one end of the secondary beam 2 is welded with a rear fork 7, the top of the secondary beam 2 is shouting to an engine oil seat cylinder 8, a spring 9 is arranged inside the seat cylinder 8, the top of the spring 9 is provided with a support column 10, the top of the support column 10 is fixed with a cushion 11 through screws, the side wall of the support column 10 is hinged with a connecting rod 12, the bottom end of the connecting rod 12 is hinged with a short stick 13, the bottom end of the short stick 13 is welded with a sliding block 14, two sides of the sliding block 14 are provided with through jacks, the inner wall of each jack is inserted with a positioning bolt 18, the top of the side wall of the seat cylinder 8 is welded with a cross bar 15, the top of the cross bar 15 is provided with a sliding chute matched with the sliding block 14, two sides of the sliding chute are both provided with through grooves 16, the, the welding of 19 bottoms of installation pole has

arc seat

20, and 2 lateral wall bottoms of auxiliary girder department open there is pedal hole 21, and 1 one end welding of girder has sleeve 3, and sleeve 3 inner wall is connected with handlebar 4 through the bearing, and 4 bottom welding of handlebar have front fork 5.

The utility model discloses in, there is installation pole 19 bottom the crossband 15 through the screw fixation, the welding has arc seat 20 bottom installation pole 19, front fork 5 and 20 bottoms of arc seat all have fender 6 through the screw fixation, fender 6 is convex structure, the specification of spring 9 and the specification looks adaptation of a seat section of thick bamboo 8, spring 9 top is equipped with the roof, 10 sliding connection of support column in a seat section of thick bamboo 8 inner wall, the handle cover has all been cup jointed in two handle departments of handlebar 4, the handle cover outer wall is opened there is anti-skidding line, girder 1 and sleeve 3 are the integrated into one piece structure, auxiliary beam 2, back vent 7, a seat section of thick bamboo 8 and crossband 15 integrated into one piece structures.

The working principle is as follows: through a seat section of thick bamboo 8, the support column 10, the connecting rod 12, slider 14 and horizontal bar 15's setting, realize the function that horizontal adjustment slider 14 position can adjust the cushion 11 height, utilize positioning bolt 18 fixed slider 14 back, cushion 11 is located support column 10, the top of the triangle-shaped of connecting rod 12 and horizontal bar 15 formation, stability is strong, traditional cushion is fixed according to the frictional force, this frame changes the holding power of cushion 11 into the extrusion stress between positioning bolt 18 and the nut groove 17, compare traditional fixed mode, fixed effect is better, the condition that leads to cushion 11 landing for a long time of riding can not appear, the inside spring 9 that is provided with of a seat section of thick bamboo 8, support column 10 is put at spring 9 top, when the road surface condition is comparatively rugged, effect through spring 9, also can provide certain cushioning effect for riding the passerby, the travelling comfort is compared traditional folding bicycle and is promoted to some extent.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a folding bicycle frame, includes girder (1) and auxiliary girder (2) articulated each other, its characterized in that, auxiliary girder (2) one end welding has back fork (7), and auxiliary girder (2) top yell an oil seat section of thick bamboo (8), and seat section of thick bamboo (8) inside is equipped with spring (9), spring (9) top is equipped with support column (10), and support column (10) top has cushion (11) through the screw fixation, support column (10) lateral wall articulates there is connecting rod (12), and connecting rod (12) bottom articulates there is trundle (13), trundle (13) bottom welding has slider (14), and slider (14) both sides open has the jack that link up, the jack inner wall is pegged graft and is had positioning bolt (18), seat section of thick bamboo (8) lateral wall top department welding has horizontal bar (15), and horizontal bar (15) top open have with the spout of slider (14) looks adaptation, the utility model discloses a bicycle handlebar with the front fork, including spout both sides, spout both sides all opened logical groove (16), and lead to the groove outer wall and open screw cap groove (17) that have the equidistance and distribute, the specification of screw cap groove (17) and the specification looks adaptation of positioning bolt (18), auxiliary girder (2) lateral wall bottom department opens there is pedal hole (21), main girder (1) one end welding has sleeve (3), and sleeve (3) inner wall is connected with handlebar (4) through the bearing, handlebar (4) bottom welding has front fork (5).

2. Frame for a folding bicycle, according to claim 1, characterized in that the bottom of said cross bar (15) is fixed with a mounting rod (19) by means of screws, and the bottom of the mounting rod (19) is welded with an arc-shaped seat (20).

3. The folding bicycle frame according to claim 1 or 2, characterized in that the front fork (5) and the bottom of the arc-shaped seat (20) are fixed with a mudguard (6) through screws, and the mudguard (6) is of an arc-shaped structure.

4. A folding bicycle frame as claimed in claim 1, characterised in that the size of the spring (9) is adapted to the size of the seat tube (8), and a top plate is arranged on the top of the spring (9), and the supporting column (10) is slidably connected to the inner wall of the seat tube (8).

5. The frame of the foldable bicycle as claimed in claim 1, wherein the handles of the handlebar (4) are sleeved with handle sleeves, and the outer walls of the handle sleeves are provided with anti-slip threads.

6. A folding bicycle frame according to claim 1, characterised in that the primary beam (1) is of integral construction with the sleeve (3), and the secondary beam (2), the rear fork (7), the seat tube (8) and the cross-bar (15) are of integral construction.