CN208828027U - A kind of back fork of bicycle bone structure and bicycle - Google Patents
A kind of back fork of bicycle bone structure and bicycle Download PDFInfo
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- CN208828027U CN208828027U CN201821321051.4U CN201821321051U CN208828027U CN 208828027 U CN208828027 U CN 208828027U CN 201821321051 U CN201821321051 U CN 201821321051U CN 208828027 U CN208828027 U CN 208828027U
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- bicycle
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Abstract
The utility model discloses a kind of back fork of bicycle bone structure, it is related to bicycle art, including rear furcula, furcula after furcula includes left back furcula and is right after described, the left back furcula includes left back yoke and left back hook piece, furcula is including hooking piece behind yoke behind the right side and the right side behind the right side, the left back yoke and left back hook piece are integral type setting, yoke and hook piece behind the right side are integral type setting behind the right side, furcula is asymmetric setting after the left back furcula and the right side, and wherein the angle of the rear furcula outward bending of side is greater than the angle of the outward bending of the rear furcula of the other side.A kind of bicycle is also disclosed in the utility model.Not only intensity is big and precision is high for the back fork of bicycle bone structure, and reduces human cost.
Description
Technical field
The utility model relates to bicycle arts, and in particular to a kind of back fork of bicycle bone structure and bicycle.
Background technique
Back fork of bicycle bone structure is largely welded together using individually rear furcula with piece is hooked on existing market, is reached
The effect of assembly.Back fork of bicycle bone structure has the following problems on existing market: rear furcula and the welding bead appearance for hooking piece welding
Unsightly, the step of welding is easy to make pipe deformations, and precision deviation is big, and integrally-built intensity is low, welding increases manpower
Cost.
Utility model content
One of purpose of the utility model is to provide a kind of intensity greatly and back fork of bicycle bone structure with high accuracy.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of back fork of bicycle bone structure, including rear furcula, furcula after the rear furcula includes left back furcula and is right are described
Left back furcula includes left back yoke and left back hook piece, and furcula is including hooking piece, the left back fork behind yoke behind the right side and the right side behind the right side
Arm and left back hook piece are integral type setting, hook piece behind yoke and the right side behind the right side as integral type setting, the left back furcula and the right side
Furcula is asymmetric setting afterwards, and wherein the angle of the rear furcula outward bending of side is greater than the outward bending of the rear furcula of the other side
Angle.
Preferably, the left back yoke is solid setting close to left back one end for hooking piece, the other end is hollow setting；Institute
One end of piece is hooked as solid setting after stating the nearly right side of right rear fork arm rest, and the other end is hollow setting.Using the above structure, solid one
Hook piece is processed at end, makes to hook piece and rear yoke forms integral structure, compared with welding, intensity is bigger, and safety is more preferable, eliminates
Because of the deformation that welding generates, reduce subsequent correction, saved the working hour of correction, greatly reduced accuracy error, increases
Shock-proof effect.
Preferably, the left back yoke is held level with both hands with left back hook piece close to the one of left back yoke close to left back one end for hooking piece
Row but be not overlapped, hooked after the right rear fork arm rest is close right one end of piece with it is right after to hook piece one end of yoke behind the right side parallel but not
It is overlapped.
Another purpose of the utility model is to provide a kind of bicycle.
A kind of bicycle, including such as above-mentioned back fork of bicycle bone structure.
A kind of manufacturing method of back fork of bicycle bone structure, comprising the following steps:
1) tubing of the furcula after manufacturing left back furcula and the right side is forged；
2) saponification process is carried out to the tubing forged；
3) tubing after saponification process is carried out taking out pipe processing, tubing is processed into thickness in 2.0MM or less；
4) pipe will be taken out treated that tubing makes annealing treatment；
5) tubing after annealing is subjected to draw processing；
6) draw treated tubing is pressed up and down by the mold with mold cavities, is pressed into the shape of needs；
7) it is processed finally by CNC, the hook plate shape of tubing one end is milled out to come.
In the step 1) for forge one end be it is solid, the other end is hollow tubing.
Saponification process in the step 2) the following steps are included:
A) first tubing is put into the room temperature sink with degreasing agent 8-16 minutes；
B) tubing is put into the Rinsing Area of room temperature 0.5-1.5 minutes again；
C) tubing is put into the Rinsing Area of room temperature 0.5-1.5 minutes again；
D) tubing is put into film agent temperature 2-4 minutes in the sink of 80-90 degree again；
E) tubing is put into the Rinsing Area of room temperature 0.5-1.5 minutes again；
F) tubing is put into the Rinsing Area of room temperature 0.5-1.5 minutes again；
G) finally tubing is put into 2-8 minutes in the sink that lubricant temperature is 80-90 degree.
In the annealing of the step 4), if tubing is 6061 materials, it is 400-460 DEG C that tubing, which is placed in temperature,
0.8-1.2 hours in tempering furnace, tubing webster hardness is to 0-3 degree after Temperature fall.
In the annealing of the step 4), if tubing is 7005 materials, it is 400-460 DEG C that tubing, which is placed in temperature,
1.3-1.8 hours in tempering furnace, tubing webster hardness is in 6-8 degree after Temperature fall.
In the annealing of the step 4), if tubing is 6066 materials, it is 400-460 DEG C that tubing, which is placed in temperature,
0.8-1.2 hours in tempering furnace, tubing webster hardness is in 3-5 degree after Temperature fall.
The beneficial effects of the utility model are:
1. the left back yoke of the back fork of bicycle bone structure of the utility model and left back hook piece are integral type setting, right rear fork
It is integral type setting that piece is hooked after arm and the right side, and specious, overall structural strength is big, and precision is high, and stability is high, eliminates left back fork
The welding step of arm and hook piece behind yoke behind the left back welding step for hooking piece and the right side and the right side, reduces subsequent correction, to drop
Low human cost；
2. furcula is asymmetric setting behind the left back furcula of the back fork of bicycle bone structure of the utility model and the right side, wherein one
The angle of the rear furcula outward bending of side is greater than the angle of the outward bending of the rear furcula of the other side, the big side of outward bending degree
Drive mechanism to be arranged on bicycle rear shaft leaves space, and the small side of outward bending degree tightly holds hind axle,
Its is compact-sized and firm, is suitable for minibike field, is readily transported and installs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of back fork of bicycle bone structure in the utility model embodiment.
Appended drawing reference: 1, left back furcula；2, furcula behind the right side；3, left back yoke；4, left back hook piece；5, yoke behind the right side；6, right
After hook piece.
Specific embodiment
Embodiment 1
As shown in Figure 1, the utility model embodiment provides a kind of back fork of bicycle bone structure, the back fork of bicycle bone structure
Including rear furcula, furcula 2 after rear furcula includes left back furcula 1 and is right, left back furcula 1 includes left back yoke 3 and left back hook piece 4,
Furcula 2 includes yoke 5 and hook piece 6 behind the right side behind the right side behind the right side, and left back yoke 3 is that integral type is arranged with left back hook piece 4, yoke 5 behind the right side
It is arranged with piece 6 is hooked behind the right side for integral type, furcula 2 is asymmetric setting after left back furcula 1 and the right side, left back 1 outward bending of furcula
Angle of the angle greater than the outward bending of furcula 2 behind the right side.
Left back yoke 3 is solid setting close to left back one end for hooking piece 4, and the other end is hollow setting；Yoke 5 is close behind the right side
One end that piece 6 is hooked behind the right side is solid setting, and the other end is hollow setting, and hook piece is processed into solid one end, makes to hook piece and rear fork
Arm forms integral structure, and compared with welding, intensity is bigger, and safety is more preferable, eliminates the deformation generated by welding, reduces
Subsequent correction has saved the working hour of correction, has greatly reduced accuracy error, increase shock-proof effect.
Piece 6 is hooked in the form of sheets behind yoke 5 and the right side behind left back yoke 3, left back hook piece 4, the right side, and left back yoke 3 is close to left back hook
One end of piece 4 is parallel close to one end of left back yoke 3 with left back hook piece 4 but is not overlapped, and yoke 5 hooks piece 6 behind the right side behind the right side
Hooking piece 6 behind one end and the right side, one end of yoke 5 is parallel behind the right side but is not overlapped.
A kind of manufacturing method of back fork of bicycle bone structure, comprising the following steps:
1) aluminium tube selects 6061 materials, forges the aluminium tube of the furcula 2 after manufacturing left back furcula 1 and the right side, aluminum pipe
One end of material be it is solid, the other end is hollow；
2) to the aluminium tube progress saponification process come is forged, saponification process is the following steps are included: a) first put aluminium tube
Enter in the room temperature sink with aluminium degreasing agent 12 minutes；B) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；C) again by aluminium
Tubing is put into the Rinsing Area of room temperature 1 minute；D) aluminium tube is put into film agent temperature 3 points in 85 degree of sink again
Clock；E) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；F) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；g)
Finally aluminium tube is put into the sink for being 85 degree with lubricant temperature 5 minutes.
3) aluminium tube after saponification process is carried out taking out pipe processing, mandrel is inserted into aluminium tube through external mold, control is passed through
The aluminium tube thickness of needs is extracted in gap between core spindle and external mold out, and aluminium tube is processed into thickness in 1.5MM；
4) pipe will be taken out treated that aluminium tube makes annealing treatment, aluminium tube is placed in the tempering furnace that temperature is 430 DEG C
In 1 hour, aluminium tube webster hardness is to 0-3 degree after Temperature fall.
5) aluminium tube after annealing is subjected to draw processing, is inwardly squeezed by 4 sheet molds that will be rotated, makes aluminum pipe
The internal-and external diameter of material generates variation, to reach the moulding of different size caliber, so as to the assembly and moulding of vehicle frame below；
6) draw treated aluminium tube is pressed up and down by the mold with mold cavities, is pressed into the shape of needs
Shape；
7) it is processed finally by CNC, the hook plate shape of aluminium tube one end is milled out to come.
A kind of bicycle, including such as above-mentioned back fork of bicycle bone structure.
Embodiment 2
As shown in Figure 1, the utility model embodiment provides a kind of back fork of bicycle bone structure, the back fork of bicycle bone structure
Including rear furcula, furcula 2 after rear furcula includes left back furcula 1 and is right, left back furcula 1 includes left back yoke 3 and left back hook piece 4,
Furcula 2 includes yoke 5 and hook piece 6 behind the right side behind the right side behind the right side, and left back yoke 3 is that integral type is arranged with left back hook piece 4, yoke 5 behind the right side
It is arranged with piece 6 is hooked behind the right side for integral type, furcula 2 is asymmetric setting after left back furcula 1 and the right side, left back 1 outward bending of furcula
Angle of the angle greater than the outward bending of furcula 2 behind the right side.
Left back yoke 3 is solid setting close to left back one end for hooking piece 4, and the other end is hollow setting；Yoke 5 is close behind the right side
One end that piece 6 is hooked behind the right side is solid setting, and the other end is hollow setting, and hook piece is processed into solid one end, makes to hook piece and rear fork
Arm forms integral structure, and compared with welding, intensity is bigger, and safety is more preferable, eliminates the deformation generated by welding, reduces
Subsequent correction has saved the working hour of correction, has greatly reduced accuracy error, increase shock-proof effect.
Piece 6 is hooked in the form of sheets behind yoke 5 and the right side behind left back yoke 3, left back hook piece 4, the right side, and left back yoke 3 is close to left back hook
One end of piece 4 is parallel close to one end of left back yoke 3 with left back hook piece 4 but is not overlapped, and yoke 5 hooks piece 6 behind the right side behind the right side
Hooking piece 6 behind one end and the right side, one end of yoke 5 is parallel behind the right side but is not overlapped.
A kind of manufacturing method of back fork of bicycle bone structure, comprising the following steps:
1) aluminium tube selects 7005 materials, forges the aluminium tube of the furcula 2 after manufacturing left back furcula 1 and the right side, aluminum pipe
One end of material be it is solid, the other end is hollow；
2) to the aluminium tube progress saponification process come is forged, saponification process is the following steps are included: a) first put aluminium tube
Enter in the room temperature sink with aluminium degreasing agent 12 minutes；B) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；C) again by aluminium
Tubing is put into the Rinsing Area of room temperature 1 minute；D) aluminium tube is put into film agent temperature 3 points in 85 degree of sink again
Clock；E) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；F) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；g)
Finally aluminium tube is put into the sink for being 85 degree with lubricant temperature 5 minutes.
3) aluminium tube after saponification process is carried out taking out pipe processing, mandrel is inserted into aluminium tube through external mold, control is passed through
The aluminium tube thickness of needs is extracted in gap between core spindle and external mold out, and aluminium tube is processed into thickness in 1.5MM；
4) pipe will be taken out treated that aluminium tube makes annealing treatment, aluminium tube is placed in the tempering furnace that temperature is 430 DEG C
In 1.5 hours, aluminium tube webster hardness is to 6-8 degree after Temperature fall.
5) aluminium tube after annealing is subjected to draw processing, is inwardly squeezed by 4 sheet molds that will be rotated, makes aluminum pipe
The internal-and external diameter of material generates variation, to reach the moulding of different size caliber, so as to the assembly and moulding of vehicle frame below；
6) draw treated aluminium tube is pressed up and down by the mold with mold cavities, is pressed into the shape of needs
Shape；
7) it is processed finally by CNC, the hook plate shape of aluminium tube one end is milled out to come.
A kind of bicycle, including such as above-mentioned back fork of bicycle bone structure.
Embodiment 3
As shown in Figure 1, the utility model embodiment provides a kind of back fork of bicycle bone structure, the back fork of bicycle bone structure
Including rear furcula, furcula 2 after rear furcula includes left back furcula 1 and is right, left back furcula 1 includes left back yoke 3 and left back hook piece 4,
Furcula 2 includes yoke 5 and hook piece 6 behind the right side behind the right side behind the right side, and left back yoke 3 is that integral type is arranged with left back hook piece 4, yoke 5 behind the right side
It is arranged with piece 6 is hooked behind the right side for integral type, furcula 2 is asymmetric setting after left back furcula 1 and the right side, left back 1 outward bending of furcula
Angle of the angle greater than the outward bending of furcula 2 behind the right side.
Left back yoke 3 is solid setting close to left back one end for hooking piece 4, and the other end is hollow setting；Yoke 5 is close behind the right side
One end that piece 6 is hooked behind the right side is solid setting, and the other end is hollow setting, and hook piece is processed into solid one end, makes to hook piece and rear fork
Arm forms integral structure, and compared with welding, intensity is bigger, and safety is more preferable, eliminates the deformation generated by welding, reduces
Subsequent correction has saved the working hour of correction, has greatly reduced accuracy error, increase shock-proof effect.
Piece 6 is hooked in the form of sheets behind yoke 5 and the right side behind left back yoke 3, left back hook piece 4, the right side, and left back yoke 3 is close to left back hook
One end of piece 4 is parallel close to one end of left back yoke 3 with left back hook piece 4 but is not overlapped, and yoke 5 hooks piece 6 behind the right side behind the right side
Hooking piece 6 behind one end and the right side, one end of yoke 5 is parallel behind the right side but is not overlapped.
A kind of manufacturing method of back fork of bicycle bone structure, comprising the following steps:
1) aluminium tube selects 6066 materials, forges the aluminium tube of the furcula 2 after manufacturing left back furcula 1 and the right side, aluminum pipe
One end of material be it is solid, the other end is hollow；
2) to the aluminium tube progress saponification process come is forged, saponification process is the following steps are included: a) first put aluminium tube
Enter in the room temperature sink with aluminium degreasing agent 12 minutes；B) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；C) again by aluminium
Tubing is put into the Rinsing Area of room temperature 1 minute；D) aluminium tube is put into film agent temperature 3 points in 85 degree of sink again
Clock；E) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；F) aluminium tube is put into the Rinsing Area of room temperature 1 minute again；g)
Finally aluminium tube is put into the sink for being 85 degree with lubricant temperature 5 minutes.
3) aluminium tube after saponification process is carried out taking out pipe processing, mandrel is inserted into aluminium tube through external mold, control is passed through
The aluminium tube thickness of needs is extracted in gap between core spindle and external mold out, and aluminium tube is processed into thickness in 1.5MM；
4) pipe will be taken out treated that aluminium tube makes annealing treatment, aluminium tube is placed in the tempering furnace that temperature is 430 DEG C
In 1 hour, aluminium tube webster hardness is to 3-5 degree after Temperature fall.
5) aluminium tube after annealing is subjected to draw processing, is inwardly squeezed by 4 sheet molds that will be rotated, makes aluminum pipe
The internal-and external diameter of material generates variation, to reach the moulding of different size caliber, so as to the assembly and moulding of vehicle frame below；
6) draw treated aluminium tube is pressed up and down by the mold with mold cavities, is pressed into the shape of needs
Shape；
7) it is processed finally by CNC, the hook plate shape of aluminium tube one end is milled out to come.
A kind of bicycle, including such as above-mentioned back fork of bicycle bone structure.
Claims (4)
1. a kind of back fork of bicycle bone structure, which is characterized in that including rear furcula, after the rear furcula includes left back furcula and is right
Furcula, the left back furcula include left back yoke and left back hook piece, and furcula is including hooking piece behind yoke behind the right side and the right side behind the right side, institute
It is integral type setting that left back yoke, which is stated, with left back hook piece, and yoke and hook piece behind the right side are integral type setting behind the right side, described left back
Furcula is asymmetric setting after furcula and the right side, and wherein the angle of the rear furcula outward bending of side is greater than the rear furcula of the other side
The angle of outward bending.
2. back fork of bicycle bone structure according to claim 1, which is characterized in that the left back yoke is close to left back hook piece
One end be solid setting, the other end be hollow setting；One end that piece is hooked behind the nearly right side of the right rear fork arm rest is solid setting, separately
One end is hollow setting.
3. back fork of bicycle bone structure according to claim 1, which is characterized in that the left back yoke is close to left back hook piece
One end it is parallel close to one end of left back yoke with left back hook piece but be not overlapped, the right rear fork arm rest it is close it is right after hook one end of piece
One end of yoke is parallel behind the right side but is not overlapped with piece is hooked behind the right side.
4. a kind of bicycle, which is characterized in that including back fork of bicycle bone structure as described in any one of claims 1-3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821321051.4U CN208828027U (en) | 2018-08-16 | 2018-08-16 | A kind of back fork of bicycle bone structure and bicycle |
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| CN201821321051.4U CN208828027U (en) | 2018-08-16 | 2018-08-16 | A kind of back fork of bicycle bone structure and bicycle |
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| CN208828027U true CN208828027U (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109131692A (en) * | 2018-08-16 | 2019-01-04 | 升励五金（深圳）有限公司 | A kind of back fork of bicycle bone structure, its manufacturing method and bicycle |
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2018
- 2018-08-16 CN CN201821321051.4U patent/CN208828027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109131692A (en) * | 2018-08-16 | 2019-01-04 | 升励五金（深圳）有限公司 | A kind of back fork of bicycle bone structure, its manufacturing method and bicycle |
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