CN109854711A - A kind of balance shaft gear - Google Patents
A kind of balance shaft gear Download PDFInfo
- Publication number
- CN109854711A CN109854711A CN201910103011.5A CN201910103011A CN109854711A CN 109854711 A CN109854711 A CN 109854711A CN 201910103011 A CN201910103011 A CN 201910103011A CN 109854711 A CN109854711 A CN 109854711A
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- annular
- arc structure
- wheel hub
- ring
- inertia ring
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Abstract
The invention discloses a kind of balance shaft gears, it includes the wheel hub of inertia ring and coaxial arrangement, circumferentially turning has annular indent arc structure on the internal perisporium of inertia ring, make it that there is indent arc section and straightway on axial cross section, circumferentially turning has annular outer arc structure on the periphery wall of wheel hub, make it that there is evagination arc section and straightway, the non-straight wall gap of annular indent arc structure formation annular corresponding with annular outer arc structure position on axial cross section；Adhesive is coated on the annular indent arc structure surface opposite with annular outer arc structure when assembly, it is pressed by interference and is pressed into rubber ring into the non-straight wall gap of annular, makes rubber ring respectively with annular indent arc structure together with annular outer arc structure gluing by post-cure；Advantage is the interference power that the cooperation of annular indent arc structure and annular outer arc structure increases the rubber ring being fitted in annular non-straight wall gap, avoids and occurs phenomenon of spinning between inertia ring and wheel hub.
Description
Technical field
The present invention relates to a kind of balance shafts, more particularly, to a kind of balance shaft gear.
Background technique
Existing three-cylinder engine is because the imbalance in structure has larger vibration in the running, to solve three-cylinder engine
Imbalance in structure needs to be balanced with balance shaft, and balance shaft gear plays transmitting torque band in this equilibrium process
Dynamic balancing axis and the effect for reducing drive noise.
Common balance shaft gear is made of inertia ring, rubber ring, wheel hub, has engaging tooth on the periphery wall of inertia ring,
There is annular straight wall gap, rubber in inertia ring, between the internal perisporium of inertia ring and the periphery wall of wheel hub in wheel hub coaxial arrangement
Liquid injects vulcanization in annular straight wall gap and forms rubber ring.This balance shaft gear has the following problems: 1) vulcanizing it in injecting glue
Before, it needs first to clean up the periphery wall of the internal perisporium of inertia ring and wheel hub, then in the internal perisporium of inertia ring and wheel hub
It is coated with adhesive on periphery wall, then injects rubber molten sulfurization into annular straight wall gap and forms rubber ring, complex process, cost
It is high；2) balance shaft gear be in -40 DEG C~150 DEG C of the engine for having mist of oil the life-cycle work, need its transmitting enough
Big torque, and it is required to keep good working order in mist of oil working environment, it is contemplated that it is in mist of oil working environment
In work, inertia ring and wheel hub all use metallic sintered products, and metallic sintered products are formed by rubber liquid injecting glue bonding by Vulcanization,
It is more to be related to content for technique of injecting glue vulcanization during this, and much is difficult to carry out process monitoring, is influenced by mist of oil, rubber
There are biggish degumming risk between circle and inertia ring and wheel hub, it will lead to occur spinning between inertia ring and wheel hub now in this way
As to will lead to balance shaft gear failure.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of balance shaft gears, and it efficiently avoids inertia rings and wheel
Occurs phenomenon of spinning between hub, and structure is simple, at low cost.
The technical scheme of the invention to solve the technical problem is: a kind of balance shaft gear, including inertia ring and
It is coaxially disposed in the wheel hub in the inertia ring, it is characterised in that: circumferentially turning has on the internal perisporium of the inertia ring
One annular indent arc structure, makes the internal perisporium of the inertia ring have indent arc section and straight line on axial cross section
Section, circumferentially turning has an annular outer arc structure on the periphery wall of the wheel hub, makes the periphery wall of the wheel hub
There is evagination arc section and straightway, the annular indent arc structure and the annular outer circular arc on axial cross section
Locations of structures is corresponding make between the inertia ring and the wheel hub that there are one with arc structure for assembling
The non-straight wall gap of annular of the rubber ring of compression moulding；Annular indent arc structure and the annular outer described in when assembly
Arc structure is coated with adhesive on opposite surface, is pressed into the annular non-straight wall gap described in indentation by interference
Rubber ring, make annular non-straight wall construction of the rubber ring from annular straight wall malformation with circular arc, by secondary
Vulcanization makes the rubber ring exist respectively with the annular indent arc structure and the annular outer arc structure gluing
Together.
The ring width in the non-straight wall gap of annular is 3~4 millimeters.Count the number that a large amount of practical exemplar manufacturing process obtain
According to, the thickness of pressing type balance shaft part than relatively thin, if the ring width in the non-straight wall gap of annular less than 3 millimeters, it is required that press fitting
The rubber ring of compression moulding it is small in size, and the too small guide angle made on rubber ring of the volume of rubber ring is too small, is unfavorable for
Assembling process；If the ring width in the non-straight wall gap of annular is greater than 4 millimeters, because of the limited height of balance shaft gear, foot can not be provided
Enough axial pressure-off power.
The height of the evagination arc section of the periphery wall of the indent arc section and wheel hub of the internal perisporium of the inertia ring
Degree is 1.8~2.3 millimeters.Here, limiting the outer dome of the indent arc section of the internal perisporium of inertia ring and the periphery wall of wheel hub
The height of segmental arc mainly considers to balance the enough axial pressure-off power of shaft gear and Slip torque, prevents from highly being got over by pressure-off
High camber line is longer, and pressure-off power also can be bigger, and Slip torque also can be bigger, and when height is less than 1.8 millimeters, pressure-off power is too small can not
Meet design value, then will affect the difficulty of assembly when height is greater than 2.3 millimeters.
The straightway of the internal perisporium of the highest point of the evagination arc section of the periphery wall of the wheel hub and the inertia ring
Between vertical range be 0.5~1.5 millimeter.The data are obtained according to actual structure measurement, 0.5~1.5 millimeter of energy
Enough meeting balance shaft gear needs certain axial pressure-off power design, and too low to will affect assembly difficulty, too high then pressure-off power is not
Foot.
The roughness of the periphery wall of the internal perisporium of the inertia ring and the wheel hub is 6.3.Here, limitation is coarse
Degree is the contact area in order to increase rubber ring Yu inertia ring and wheel hub, increases adhesive strength.
A kind of balance shaft gear, including inertia ring and coaxial arrangement in the wheel hub in the inertia ring, it is characterised in that:
Circumferentially turning has an annular outer arc structure on the internal perisporium of the inertia ring, makes the internal perisporium of the inertia ring
There is evagination arc section and straightway on axial cross section, circumferentially turning has in an annular on the periphery wall of the wheel hub
Concave arc structure makes the periphery wall of the wheel hub have indent arc section and straightway, the annular on axial cross section
Evagination arc structure is corresponding with the annular indent arc structure position to be made between the inertia ring and the wheel hub
There are the annular non-straight wall gaps of a rubber ring with arc structure for assemble compression moulding；Described in when assembly
Annular indent arc structure is coated with adhesive on the surface opposite with the annular outer arc structure, is pressed by interference
It is pressed into the rubber ring into the non-straight wall gap of annular, has the rubber ring from annular straight wall malformation
Have the non-straight wall construction of annular of circular arc, by post-cure make the rubber ring respectively with the annular indent arc structure
Together with the annular outer arc structure gluing.
The ring width in the non-straight wall gap of annular is 3~4 millimeters.Count the number that a large amount of practical exemplar manufacturing process obtain
According to, the thickness of pressing type balance shaft part than relatively thin, if the ring width in the non-straight wall gap of annular less than 3 millimeters, it is required that press fitting
The rubber ring of compression moulding it is small in size, and the too small guide angle made on rubber ring of the volume of rubber ring is too small, is unfavorable for
Assembling process；If the ring width in the non-straight wall gap of annular is greater than 4 millimeters, because of the limited height of balance shaft gear, foot can not be provided
Enough axial pressure-off power.
The height of the indent arc section of the periphery wall of the evagination arc section and wheel hub of the internal perisporium of the inertia ring
Degree is 1.8~2.3 millimeters.Here, limiting the indent circle of the evagination arc section of the internal perisporium of inertia ring and the periphery wall of wheel hub
The height of segmental arc mainly considers to balance the enough axial pressure-off power of shaft gear and Slip torque, prevents from highly being got over by pressure-off
High camber line is longer, and pressure-off power also can be bigger, and Slip torque also can be bigger, and when height is less than 1.8 millimeters, pressure-off power is too small can not
Meet design value, then will affect the difficulty of assembly when height is greater than 2.3 millimeters.
The straightway of the internal perisporium of the highest point of the evagination arc section of the periphery wall of the inertia ring and the wheel hub
Between vertical range be 0.5~1.5 millimeter.The data are obtained according to actual structure measurement, 0.5~1.5 millimeter of energy
Enough meeting balance shaft gear needs certain axial pressure-off power design, and too low to will affect assembly difficulty, too high then pressure-off power is not
Foot.
The roughness of the periphery wall of the internal perisporium of the inertia ring and the wheel hub is 6.3.Here, limitation is coarse
Degree is the contact area in order to increase rubber ring Yu inertia ring and wheel hub, increases adhesive strength.
Compared with the prior art, the advantages of the present invention are as follows:
1) the circumferentially annular indent arc structure of turning one on the internal perisporium of inertia ring, and on the periphery wall of wheel hub
Circumferentially one annular outer arc structure of turning, or circumferentially one annular outer circular arc of turning on the internal perisporium of inertia ring
Structure, and the circumferentially turning one annular indent arc structure on the periphery wall of wheel hub, annular indent arc structure and annular
The cooperation of evagination arc structure increases the interference power for the rubber ring being fitted in the non-straight wall gap of annular, efficiently avoids being used to
There is phenomenon of spinning between amount ring and wheel hub, ensures that balance shaft gear is effective.
2) by adjusting the thickness of rubber ring, rubber ring can be made to have certain compression and back elastic force, additional glue after being compressed
The bonding of glutinous agent, can be effectively improved inertia ring and wheel hub -40 DEG C~150 DEG C at a temperature of guarantee enough static torques,
To ensure that the driving torque for driving balance shaft.
3) it is to adjust the rigidity of rubber ring by adjusting the rigidity of rubber, can be effectively avoided and occur altogether with engine
Vibration, so as to be effectively reduced the operational vibration of engine, reduces noise.
4) directly by the non-straight wall gap of rubber ring indentation annular of compression moulding, technical process is simple, cost
It is low.
5) adhesive is applied on the annular indent arc structure surface opposite with annular outer arc structure in assembly,
The torsional strength between rubber ring and inertia ring and wheel hub can be increased, transmit biggish torque to meet.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the balance shaft gear of embodiment one；
Fig. 2 is the axial sectional view of the balance shaft gear of embodiment one；
Fig. 3 is the axial sectional view of the balance shaft gear of embodiment two.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one:
The present embodiment propose a kind of balance shaft gear, as depicted in figs. 1 and 2 comprising inertia ring 1 and coaxial arrangement in
Wheel hub 2 in inertia ring 1, has engaging tooth 11 on the periphery wall of inertia ring 1, and circumferentially turning has on the internal perisporium of inertia ring 1
One annular indent arc structure 12, makes the internal perisporium of inertia ring 1 have one section of indent arc section 13 and two on axial cross section
Section is distributed in the straightways 14 of 13 two sides of indent arc section, and circumferentially turning has an annular outer circle on the periphery wall of wheel hub 2
Arc structure 22 makes the periphery wall of wheel hub 2 be distributed in evagination circular arc with one section of evagination arc section 23 and two sections on axial cross section
The straightway 24 of 23 two sides of section, annular indent arc structure 12 is corresponding with 22 position of annular outer arc structure to make inertia ring 1
There are the annular non-straight wall gaps of a rubber ring 4 with arc structure for assemble compression moulding between wheel hub 2
3；Adhesive is coated with (in figure not on the surface opposite with annular outer arc structure 22 of annular indent arc structure 12 when assembly
Show), it is pressed by interference and is pressed into rubber ring 4 into the non-straight wall gap 3 of annular, makes rubber ring 4 from annular straight wall malformation
For the non-straight wall construction of annular with circular arc, by post-cure make rubber ring 4 respectively with annular indent arc structure 12 and ring
22 gluing of shape evagination arc structure is together.
In the present embodiment, the ring width in the non-straight wall gap 3 of annular is 3~4 millimeters, specifically can be by the non-straight wall of annular when design
The ring width in gap 3 is designed as 3.5 millimeters；The outer dome of the periphery wall of the indent arc section 13 and wheel hub 2 of the internal perisporium of inertia ring 1
The height of segmental arc 23 is 1.8~2.3 millimeters, specifically will can highly be both designed as 2 millimeters when design；The periphery wall of wheel hub 2
Vertical range between the straightway 14 of the internal perisporium of the highest point and inertia ring 1 of evagination arc section 23 is 0.5~1.5 millimeter,
Vertical range can be designed as to 1.5 millimeters when specific design；The roughness of the periphery wall of the internal perisporium and wheel hub 2 of inertia ring 1 is equal
It is 6.3, limiting roughness is the contact area in order to increase rubber ring Yu inertia ring 1 and wheel hub 2, increases adhesive strength.
Embodiment two:
A kind of balance shaft gear that the present embodiment proposes, as shown in Figure 3 comprising inertia ring 1 and coaxial arrangement are in inertia
Wheel hub 2 in ring 1, has engaging tooth 11 on the periphery wall of inertia ring 1, and circumferentially turning has one on the internal perisporium of inertia ring 1
Annular outer arc structure 15 makes the internal perisporium of inertia ring 1 have one section of evagination arc section 16 and two sections points on axial cross section
Cloth is in the straightway 17 of the two sides of outer dome segmental arc 16, and circumferentially turning has concave arc in an annular on the periphery wall of wheel hub 2
Structure 25 makes the periphery wall of wheel hub 2 be distributed in indent arc section with one section of indent arc section 26 and two sections on axial cross section
The straightway 27 of 26 two sides, indent 25 positions of arc structure are corresponding makes inertia ring 1 with annular for annular outer arc structure 15
There are the annular non-straight wall gaps of a rubber ring 4 with arc structure for assemble compression moulding between wheel hub 2
3；Adhesive is coated with (in figure not on the surface opposite with annular outer arc structure 15 of annular indent arc structure 25 when assembly
Show), it is pressed by interference and is pressed into rubber ring 4 into the non-straight wall gap 3 of annular, makes rubber ring 4 from annular straight wall malformation
For the non-straight wall construction of annular with circular arc, by post-cure make rubber ring 4 respectively with annular indent arc structure 25 and ring
15 gluing of shape evagination arc structure is together.
In the present embodiment, the ring width in the non-straight wall gap 3 of annular is 3~4 millimeters, specifically can be by the non-straight wall of annular when design
The ring width in gap 3 is designed as 3.5 millimeters；The indent circle of the periphery wall of the evagination arc section 16 and wheel hub 2 of the internal perisporium of inertia ring 1
The height of segmental arc 26 is 1.8~2.3 millimeters, specifically will can highly be both designed as 2 millimeters when design；The periphery wall of inertia ring 1
Evagination arc section 16 highest point and wheel hub 2 internal perisporium straightway 27 between vertical range be 0.5~1.5 millimeter,
Vertical range can be designed as to 1.5 millimeters when specific design；The roughness of the periphery wall of the internal perisporium and wheel hub 2 of inertia ring 1 is equal
It is 6.3, limiting roughness is the contact area in order to increase rubber ring 4 Yu inertia ring 1 and wheel hub 2, increases adhesive strength.
In above-mentioned each embodiment, rubber ring 4 is preparatory compression moulding, and rubber passes through special annular straight-arm mold and rule
Fixed curing parameter, available molding annular straight-arm structure rubber circle；Interference press fitting is that rubber ring semi-finals system is squeezed into inertia
In the non-straight wall gap 3 of annular between ring 1 and wheel hub 2, rubber ring 4 is squeezed by external force forces compression to be elongated, after the assembly is completed,
Rubber ring 4 can generate resistance to inertia ring 1 and wheel hub 2, this power can increase the torque between inertia ring 1 and wheel hub 2.
Claims (10)
1. a kind of balance shaft gear, including inertia ring and coaxial arrangement in the wheel hub in the inertia ring, it is characterised in that: institute
Circumferentially turning has an annular indent arc structure on the internal perisporium for the inertia ring stated, and the internal perisporium of the inertia ring is made to exist
There is indent arc section and straightway, circumferentially turning has an annular outer on the periphery wall of the wheel hub on axial cross section
Arc structure makes the periphery wall of the wheel hub have evagination arc section and straightway on axial cross section, in the annular
Concave arc structure is corresponding with the annular outer arc structure position to be made to deposit between the inertia ring and the wheel hub
In the non-straight wall gap of annular of a rubber ring for assembling compression moulding with arc structure；Ring described in when assembly
Shape indent arc structure is coated with adhesive on the surface opposite with the annular outer arc structure, by interference be pressed to
Rubber ring described in indentation in the described non-straight wall gap of annular, make the rubber ring from annular straight wall malformation with
The non-straight wall construction of annular of circular arc, by post-cure make the rubber ring respectively with the annular indent arc structure with
The annular outer arc structure gluing is together.
2. a kind of balance shaft gear according to claim 1, it is characterised in that: the ring width in the non-straight wall gap of annular
It is 3~4 millimeters.
3. a kind of balance shaft gear according to claim 2, it is characterised in that: the indent of the internal perisporium of the inertia ring
The height of the evagination arc section of the periphery wall of arc section and the wheel hub is 1.8~2.3 millimeters.
4. a kind of balance shaft gear according to claim 3, it is characterised in that: the outer dome of the periphery wall of the wheel hub
Vertical range between the straightway of the internal perisporium of the highest point of segmental arc and the inertia ring is 0.5~1.5 millimeter.
5. a kind of balance shaft gear according to any one of claim 1 to 4, it is characterised in that: the inertia ring
The roughness of the periphery wall of internal perisporium and the wheel hub is 6.3.
6. a kind of balance shaft gear, including inertia ring and coaxial arrangement in the wheel hub in the inertia ring, it is characterised in that: institute
Circumferentially turning has an annular outer arc structure on the internal perisporium for the inertia ring stated, and the internal perisporium of the inertia ring is made to exist
There is evagination arc section and straightway, circumferentially turning has an annular indent on the periphery wall of the wheel hub on axial cross section
Arc structure, makes the periphery wall of the wheel hub have indent arc section and straightway on axial cross section, and the annular is outer
Convex arc structure is corresponding with the annular indent arc structure position to be made to deposit between the inertia ring and the wheel hub
In the non-straight wall gap of annular of a rubber ring for assembling compression moulding with arc structure；Ring described in when assembly
Shape indent arc structure is coated with adhesive on the surface opposite with the annular outer arc structure, by interference be pressed to
Rubber ring described in indentation in the described non-straight wall gap of annular, make the rubber ring from annular straight wall malformation with
The non-straight wall construction of annular of circular arc, by post-cure make the rubber ring respectively with the annular indent arc structure with
The annular outer arc structure gluing is together.
7. a kind of balance shaft gear according to claim 6, it is characterised in that: the ring width in the non-straight wall gap of annular
It is 3~4 millimeters.
8. a kind of balance shaft gear according to claim 7, it is characterised in that: the evagination of the internal perisporium of the inertia ring
The height of the indent arc section of the periphery wall of arc section and the wheel hub is 1.8~2.3 millimeters.
9. a kind of balance shaft gear according to claim 8, it is characterised in that: the evagination of the periphery wall of the inertia ring
Vertical range between the straightway of the internal perisporium of the highest point of arc section and the wheel hub is 0.5~1.5 millimeter.
10. a kind of balance shaft gear according to any one of claims 6 to 9, it is characterised in that: the inertia ring
The roughness of the periphery wall of internal perisporium and the wheel hub is 6.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103011.5A CN109854711A (en) | 2019-02-01 | 2019-02-01 | A kind of balance shaft gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103011.5A CN109854711A (en) | 2019-02-01 | 2019-02-01 | A kind of balance shaft gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109854711A true CN109854711A (en) | 2019-06-07 |
Family
ID=66897305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910103011.5A Pending CN109854711A (en) | 2019-02-01 | 2019-02-01 | A kind of balance shaft gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109854711A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236930A1 (en) * | 2021-05-08 | 2022-11-17 | 武汉理工大学 | Balanced vibration reduction gear and multi-target structure optimization method for same |
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| CN201184390Y (en) * | 2008-03-18 | 2009-01-21 | 湖北广奥减振器制造有限公司 | Rubber shock absorber |
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Application publication date: 20190607 |
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