CN219154651U

CN219154651U - Five-way structure of bicycle and bicycle frame

Info

Publication number: CN219154651U
Application number: CN202221373934.6U
Authority: CN
Inventors: 文讯; 颜兵; 蒋和平
Original assignee: Dongguan Kaisheng Bicycle Co ltd
Current assignee: Dongguan Kaisheng Bicycle Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2023-06-09
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses a bicycle five-way structure which comprises a middle shaft tube and a rear fork mounting tube, wherein a vertical tube connecting part is arranged on the middle shaft tube, and the rear fork mounting tube is fixedly connected with the middle shaft tube. The bicycle five-way structure provided by the utility model is convenient for quick installation of the rear fork. The utility model also discloses a bicycle frame.

Description

Five-way structure of bicycle and bicycle frame

Technical Field

The utility model relates to the technical field of bicycles and bicycle accessories, in particular to a bicycle five-way structure and a bicycle frame.

Background

In the prior art, chinese patent CN201320676295.5 discloses a bicycle frame with a detachable brake column, the bicycle frame comprises a front vertical tube, a rear vertical tube, a front fork upper beam, a front fork lower beam, a rear fork upper beam, a rear fork lower beam and a brake column, the front ends of the front fork upper beam and the front fork lower beam are fixedly mounted with the front vertical tube, the rear ends are fixedly mounted with the rear vertical tube, the front ends of the rear fork upper beam and the rear fork lower beam are fixedly mounted with the rear vertical tube, the rear ends are fixedly mounted together to form a rear fork head, and the brake column is mounted on the lower bottom surface of the rear fork upper beam. Because the rear fork underbeam is fixed in the five-way pipe through welding, the rear fork upper beam is fixed in the rear vertical pipe through welding, in order to ensure the neatness of a bicycle assembly workshop and the reliability of assembled parts, the general bicycle assembly workshop and a bicycle frame welding workshop are arranged in different workshops, and in the transportation process, gaps exist between the main beam pipe of the bicycle frame and the rear fork, so that the transportation efficiency is low, and the assembly efficiency is influenced. In addition, the upper rear fork and the lower rear fork are respectively welded with the seat tube and the five-way tube, and special rear fork welding procedures are needed to influence the total assembly efficiency of the bicycle.

Disclosure of Invention

The utility model aims to provide a five-way structure of a bicycle, which is convenient for quick installation of a rear fork.

The technical scheme adopted by the bicycle five-way structure disclosed by the utility model is as follows:

the bicycle five-way structure comprises a middle shaft tube, wherein a vertical tube connecting part is arranged on the middle shaft tube, and the bicycle five-way structure further comprises a rear fork mounting tube which is fixedly connected with the middle shaft tube.

As the preferred scheme, still be equipped with heel brace installation department and elasticity butt piece on the central siphon, heel brace jack and two lugs have been seted up on the heel brace installation department, the both ends of heel brace jack are located respectively to the lug, the lug is passed to the jack, elasticity butt piece is fixed to be located on the heel brace installation department, is located between two lugs.

Preferably, the middle shaft tube is provided with a lower tube connecting part.

The bicycle five-way joint disclosed by the utility model has the beneficial effects that: the rear fork is installed through the rear fork installation pipe, and the disassembly and the assembly are convenient.

Yet another object of the present utility model is to provide a bicycle frame, in which the rear fork can be quickly installed or removed,

the utility model provides a bicycle frame, includes the front tube, goes up pipe, riser and rear fork, the one end fixed connection of going up the pipe is on the front tube, and the other end fixed connection is on the riser, the rear fork includes that rear fork and rear fork down, still includes foretell bicycle five-way structure, first fastening component, second fastening component, the rear fork passes through first fastening component detachably and installs on the riser, the rear fork passes through second fastening component detachably and installs in the rear fork installation pipe down.

As the preferable scheme, first fastening assembly is including locating the screw rod of riser to and the butt seat of being connected with the back upper fork, the butt seat has seted up the first mounting hole that matches with the screw rod, the butt seat is fixed in the screw rod through the nut.

As the preferred scheme, first fastening assembly still includes the cushion collar of seting up the second mounting hole, the screw rod passes second mounting hole and first mounting hole in proper order for the cushion collar butt is between riser and butt seat.

As the preferred scheme, the second fastening assembly comprises a fixed shaft and a fixed seat connected with the rear lower fork, wherein the fixed seat is provided with two fixed lugs which are respectively positioned at two sides of the rear fork installation pipe, two fixed lugs are respectively provided with an inserting hole, and the fixed shaft sequentially penetrates through the inserting holes and the rear fork installation pipe to enable the fixed seat to be fixed on the rear fork installation pipe.

As a preferable scheme, the rear upper fork comprises a first rear upper fork and a second rear upper fork, the first rear upper fork and the second rear upper fork are respectively arranged at two ends of the first fastening component, the rear lower fork comprises a first rear lower fork and a second rear lower fork, and the first rear lower fork and the second rear lower fork are respectively arranged at two ends of the second fastening component.

As the preferable scheme, the rear fork further comprises a first supporting seat connected between the first rear upper fork and the first rear lower fork and a second supporting seat connected between the second rear upper fork and the second rear lower fork, the first supporting seat is provided with a first hook claw, and the second supporting seat is provided with a second hook claw.

The utility model discloses a bicycle frame, which has the beneficial effects that: through increasing the rear fork installation pipe on the central siphon, when the rear fork is installed, need not the welding, through the rear fork installation pipe fix can to realize the quick installation of rear fork.

Drawings

FIG. 1 is a schematic view of a five-way bicycle structure of the present utility model;

FIG. 2 is a schematic view of another joint of the bicycle five-way structure of the present utility model;

FIG. 3 is a schematic structural view of the bicycle frame of the present utility model;

FIG. 4 is a schematic view of the rear fork structure of the bicycle frame of the present utility model.

Detailed Description

The utility model is further illustrated and described below in conjunction with the specific embodiments and the accompanying drawings:

referring to fig. 1 and 2, a bicycle five-way structure includes a bottom bracket tube 10 and a bottom bracket mounting tube 12, the bottom bracket mounting tube 12 is fixedly connected with the bottom bracket tube 10, and may be integrally formed or welded, a riser connection portion, a heel brace mounting portion 14 and an elastic abutment piece 16 are disposed on an outer surface of the bottom bracket tube 10, a heel brace insertion hole 142 and two protruding blocks 144 are disposed on the heel brace mounting portion 14, the protruding blocks 144 are disposed at two ends of the heel brace insertion hole 142 respectively, the heel brace insertion hole 142 passes through the protruding blocks 144, and the elastic abutment piece 16 is fixedly disposed on the heel brace mounting portion 14 and located between the two protruding blocks 144 through screws 18.

The middle shaft tube 10 is provided with a lower tube connecting part and a vertical tube connecting part. Through adding the rear fork installation tube 12 on the middle shaft tube 10, when the rear fork is installed, welding is not needed, and the rear fork installation tube 12 is used for fixing, so that the quick installation of the rear fork is realized. The heel brace insertion holes 142 of the heel brace installation part 14 may be used for heel brace insertion, thereby realizing installation and fixation of the heel brace.

Referring to fig. 3 and 4, a bicycle frame includes a front tube, an upper tube, a stand tube 20, a rear fork 30, a bicycle five-way structure, a first fastening assembly 60 and a second fastening assembly 70, wherein one end of the upper tube is fixedly connected to the front tube, the other end is fixedly connected to the stand tube 20, and the rear fork 30 includes a rear upper fork 40 and a rear lower fork 50.

The upper rear fork 40 is removably mounted to the riser 20 by a first fastening assembly 60 and the lower rear fork 50 is removably mounted to the rear fork mounting tube 12 by a second fastening assembly 70.

The upper rear fork 40 is removably mounted to the riser 20 by the first fastening assembly 60 and the lower rear fork 50 is removably mounted to the rear fork mounting tube 12 by the second fastening assembly 70 without welding, thereby allowing for quick mounting of the rear fork 30.

In this embodiment, the first fastening assembly 60 includes a screw 61 disposed on the riser 20, and a abutment 62 connected to the rear upper fork 40, the abutment 62 is provided with a first mounting hole 622 matching with the screw 61, and the abutment 62 is fixed to the screw 61 by a nut. Specifically, the screw 61 passes through the first mounting hole 622 of the abutment seat 62, and then the abutment seat 62 moves and abuts against the riser 20 to achieve fixation by mounting a nut on the screw 61 and tightening, or an abutment protrusion is provided on the outer wall of the screw 61 for abutting against the abutment seat 62.

Further, the first fastening assembly 60 further includes a buffer sleeve 64 provided with a second mounting hole, and the screw 61 sequentially passes through the second mounting hole and the first mounting hole 622, so that the buffer sleeve 64 abuts between the riser 20 and the abutment seat 62. Specifically, the screw 61 sequentially passes through the second mounting hole of the buffer sleeve 64 and the first mounting hole 622 of the abutment seat 62, and then the buffer sleeve 64 and the abutment seat 62 are moved by mounting and tightening a nut on the screw 61, and the buffer sleeve 64 is abutted between the stand pipe 20 and the abutment seat 62, so that the fixing of the rear fork 30 is realized. The cushion cover 64 is made of elastic material, such as silica gel or rubber, so that the connection between the abutment 62 and the riser 20 can be tightly secured, and the rigid contact between the abutment 62 and the riser 20 can be avoided to generate a large friction.

In this embodiment, the second fastening assembly 70 includes a fixing shaft 74, and a fixing base 72 connected to the rear lower fork 50, where the fixing base 72 is provided with two fixing lugs 722 and located on two sides of the rear fork mounting tube 12, and two fixing lugs 722 are provided with insertion holes 724, and the fixing shaft 74 sequentially passes through the insertion holes 724 and the rear fork mounting tube 12, so that the fixing base 72 is fixed to the rear fork mounting tube 12. Specifically, the fixing shaft 74 is provided with a shaft hole, and after the fixing shaft 74 sequentially passes through the insertion hole 724 and the rear fork mounting tube 12, screws or rivets are screwed into the shaft holes at two ends of the fixing shaft 74 and are fixed to the fixing lugs 722, so that the fixing base 72 is mounted and fixed. In other embodiments, the outer wall of the fixed shaft 74 is threaded, and after the fixed shaft 74 passes through the insertion hole 724 and the rear fork mounting tube 12 in sequence, a nut is mounted on the fixed shaft 74 and tightened to realize the mounting and fixing of the fixing base 72.

In this embodiment, the rear upper fork 40 includes a first rear upper fork 42 and a second rear upper fork 44, and the first rear upper fork 42 and the second rear upper fork 44 are respectively mounted at two ends of the first fastening assembly 60. The rear lower fork 50 includes a first rear lower fork 52 and a second rear lower fork 54, and the first rear lower fork 52 and the second rear lower fork 54 are respectively mounted at both ends of the second fastening assembly 70. Specifically, the two ends of the abutment seat 62 are respectively provided with a first clamping protrusion, the first rear upper fork 42 and the second rear upper fork 44 are respectively provided with a matched first clamping groove, and the two first clamping grooves are respectively clamped with the first clamping protrusions at the two ends of the abutment seat 62. The two ends of the fixing seat 72 are respectively provided with a second clamping protrusion, the first rear lower fork 52 and the second rear lower fork 54 are respectively provided with a matched second clamping groove, and the two second clamping grooves are respectively clamped in the second clamping protrusions at the two ends of the fixing seat 72.

In this embodiment, the rear fork 30 further includes a first supporting seat 80 connected between the first rear upper fork 42 and the first rear lower fork 52, and a second supporting seat 90 connected between the second rear upper fork 44 and the second rear lower fork 54, where the first supporting seat 80 is provided with a first hook claw 82, and the second supporting seat 90 is provided with a second hook claw 92. Specifically, the two ends of the first supporting seat 80 are respectively provided with a third clamping protrusion, the first rear upper fork 42 and the first rear lower fork 52 are respectively provided with a matched third clamping groove, and the two third clamping grooves are respectively clamped with the third clamping protrusions at the two ends of the first supporting seat 80. The second supporting seat 90 is provided with fourth clamping protrusions at two ends, the second rear upper fork 44 and the second rear lower fork 54 are respectively provided with matched fourth clamping grooves, and the two fourth clamping grooves are respectively clamped with the fourth clamping protrusions at two ends of the second supporting seat 90.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. The bicycle five-way structure comprises a middle shaft tube, wherein a vertical tube connecting part is arranged on the middle shaft tube, and the bicycle five-way structure is characterized by further comprising a rear fork mounting tube, and the rear fork mounting tube is fixedly connected with the middle shaft tube.

2. The bicycle five-way structure according to claim 1, wherein the bottom bracket tube is further provided with a heel brace installation part and an elastic abutting piece, the heel brace installation part is provided with a heel brace insertion hole and two protruding blocks, the protruding blocks are respectively arranged at two ends of the heel brace insertion hole, the insertion hole penetrates through the protruding blocks, and the elastic abutting piece is fixedly arranged on the heel brace installation part and is positioned between the two protruding blocks.

3. The bicycle five-way structure according to claim 1 or 2, wherein the bottom bracket tube is provided with a bottom bracket tube connecting portion.

4. The bicycle frame comprises a front pipe, an upper pipe, a vertical pipe and a rear fork, wherein one end of the upper pipe is fixedly connected to the front pipe, the other end of the upper pipe is fixedly connected to the vertical pipe, the rear fork comprises a rear upper fork and a rear lower fork, and the bicycle frame is characterized by further comprising a bicycle five-way structure, a first fastening assembly and a second fastening assembly according to any one of claims 1-3, one end of the vertical pipe is fixed to a vertical pipe connecting part, the rear upper fork is detachably mounted on the vertical pipe through the first fastening assembly, and the rear lower fork is detachably mounted on the rear fork mounting pipe through the second fastening assembly.

5. The bicycle frame of claim 4, wherein the first fastening assembly comprises a nut and a threaded rod disposed on the stand pipe, and a abutment connected to the rear fork, the abutment being provided with a first mounting hole matching the threaded rod, the abutment being secured to the threaded rod by the nut.

6. The bicycle frame of claim 5, wherein the first fastening assembly further comprises a buffer sleeve provided with a second mounting hole, and the screw passes through the second mounting hole and the first mounting hole in sequence such that the buffer sleeve is abutted between the stand pipe and the abutment.

7. The bicycle frame of claim 4, wherein the second fastening assembly comprises a fixing shaft and a fixing seat connected with the rear lower fork, the fixing seat is provided with two fixing lugs which are respectively positioned at two sides of the rear fork installation tube, the two fixing lugs are provided with insertion holes, and the fixing shaft sequentially passes through the insertion holes and the rear fork installation tube, so that the fixing seat is fixed on the rear fork installation tube.

8. The bicycle frame of claim 4, wherein the rear top fork comprises a first rear top fork and a second rear top fork, the first rear top fork and the second rear top fork being mounted to respective ends of the first fastening assembly, the rear bottom fork comprising a first rear bottom fork and a second rear bottom fork, the first rear bottom fork and the second rear bottom fork being mounted to respective ends of the second fastening assembly.

9. The bicycle frame of claim 8, wherein the rear fork further comprises a first support base coupled between the first rear upper fork and the first rear lower fork, and a second support base coupled between the second rear upper fork and the second rear lower fork, the first support base having a first hook jaw thereon and the second support base having a second hook jaw thereon.