Lower swing arm assembly before automobile
Technical field
The present invention relates to auto parts and components field, particularly relate to lower swing arm assembly before a kind of automobile.
Background technology
The suspension of automobile is the assembly of all transmission joints, its Main Function between vehicle body and the wheel connecting automobile
It is to transmit the shear force and moment acting between wheel and vehicle body, slows down the shake being transferred to vehicle body in driving conditions from wheel
Dynamic, improve stability and the comfortableness of driving, suspension includes front suspension and rear suspension, the front suspension lower swing arm assembly of automobile, is
Front suspension is primarily directed toward rod member, distance rod effect of simultaneously having held concurrently, bear startup, brake, longitudinal force when turning and cross force, be
Determining one of critical component of vehicle performance, front suspension lower swing arm assembly is mainly total with fore sub frame by front lining, back bush
One-tenth is attached, and by swing arm bulb and knuckle and turn to guiding mechanism to be attached, according to prior art, the bottom before automobile
Arm assembly is all to cast with spheroidal graphite cast-iron to form, Heavy Weight, and cost is high, and generally applicable property is poor, does not has avoiding structure simultaneously, causes nothing
Method other vehicles general, it is impossible to simultaneously meet two or more vehicles, poor universality, if before using other materials to produce automobile
Lower swing arm assembly, according to current structure, it is impossible to meets the bearing capacity after material changes and requires and can not dodge power transmission shaft
Deng drive mechanism.
Summary of the invention
The technical problem to be solved is: overcome the defect of above prior art, it is provided that one can meet material
Bearing capacity after material change require to dodge again the drive mechanisms such as power transmission shaft make that weight is the lightest, low cost and versatility good
Lower swing arm assembly before automobile.
The technical solution used in the present invention is: lower swing arm assembly before a kind of automobile, including lower swing arm main body assembly, described
Lower swing arm main body assembly be provided with bulb assembly and front lining, be provided with swing arm, institute between described bulb assembly and front lining
The material of the lower swing arm main body assembly stated is aluminium alloy, and the medial surface of described swing arm includes and horizontal plane in the projection of horizontal plane
The first parallel straight line and the circular arc line being connected with the first straight line, the upper surface of described swing arm is at bulb assembly axis place
Perpendicular includes oblique line and the first curve being connected with oblique line, and the lower surface of described swing arm is at bulb assembly axis place
Perpendicular includes the second straight line with plane-parallel and the second curve being connected with the second straight line, the first described curve and
Second curve sizes shape is identical, and the center of circle of described circular arc line is positioned at the lower section of circular arc line, the circular arc of described circular arc line half
Footpath is 110~140 millimeters, and the central angle of described circular arc line is 50 °~70 °, described oblique line and bulb assembly upper surface institute
The angle of plane be 10 °~20 °, the first described curve includes the first circular arc line, the second circular arc line and three-arc line,
The first described circular arc line and the second straight line are tangent, and the second described circular arc line and the first circular arc line are tangent, the 3rd described circle
Camber line and the second circular arc line are tangent, and the center of circle of the first described circular arc line is positioned at the top of the first curve, the first described circular arc
The arc radius of line is 350~500 millimeters, and the described central angle corresponding to the first circular arc line is 8 °~16 °, described second
The center of circle of circular arc line is positioned at the lower section of the first curve, and the arc radius of the second described circular arc line is 130~160 millimeters, described
The central angle corresponding to the second circular arc line be 20 °~50 °, the center of circle of described three-arc line is positioned at the upper of the first curve
Side, the arc radius of described three-arc line is 50~80 millimeters, and the described central angle corresponding to three-arc line is 10 °
~30 °.
After using above structure, the present invention compared with prior art has the advantage that the material lower swing arm main body assembly
Material is changed into aluminium alloy by spheroidal graphite cast-iron, and processing mode is become forging, lower swing arm assembly before the automobile produced from casting simultaneously
Lightweight, in order to meet three kinds of different automobile types (pure electronic, the HA hybrid power of 5AEV and HAVE are pure electronic) bearing requirements and
Dodging the requirement of power transmission shaft, arrange curved surface at swing arm horizontal direction, be made up of plane and arc surface, projection corresponding to plane is
One straight line, what arc surface was corresponding is projected as circular arc line, plane and arc surface is to be sequentially distributed to front lining direction from bulb assembly
, curved surface is set at swing arm longitudinal direction, is made up of slope, the first arc surface, the second arc surface and three-arc face, slope pair
That answers is projected as oblique line, and what the first arc surface was corresponding is projected as the first circular arc line, and what the second arc surface was corresponding is projected as the second circle
Camber line, what three-arc face was corresponding is projected as three-arc line, and it is exactly whole swing arm that horizontal curved surface combines with longitudinal curved surface
A concrete shape, ensure the size of various curved surface within the specific limits simultaneously, ball stud installation site and front lining are installed
The change of horizontal radian and the longitudinal radian of increase between position, advantage is that the bearing capacity after can meeting changes in material requires again
Can dodge the drive mechanisms such as power transmission shaft make that weight is the lightest, low cost and versatility good.
As preferably, the arc radius of the first described circular arc line is 400 millimeters, corresponding to the first described circular arc line
Central angle is 13 °, and effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
As preferably, the arc radius of the second described circular arc line is 150 millimeters, corresponding to the second described circular arc line
Central angle is 30 °, and effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
As preferably, the arc radius of described three-arc line is 70 millimeters, corresponding to described three-arc line
Central angle is 18 °, and effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
As preferably, described bulb assembly is provided with the convenient opening positioned away from the side of front lining one end, and it is right to facilitate
Bulb assembly positions, and is conducive to installing location, it is not necessary to additionally arrange the realization of locating dowel, beneficially Forging Technology.
As preferably, described bulb assembly is provided with at least two bulb pin-and-hole, and two bulb pin-and-holes lay respectively at out
The both sides of mouth, easy for installation.
As preferably, the quantity of described bulb pin-and-hole is three, and described bulb pin-and-hole becomes angular distribution, described pendulum
The side of arm nearly bulb assembly one end is 10~17 millimeters to the distance at the bulb pin-and-hole center away from opening, convenient total to bulb
Become to position, simultaneously can preferably dispersive stress.
As preferably, described swing arm upper surface is provided with two the first reinforcements, and described swing arm lower surface is provided with two
Second reinforcement, the first described reinforcement is divided into three the first grooves swing arm upper surface, the first groove of nearly bulb assembly
For opening towards the open slot of bulb assembly, the described bulb pin-and-hole away from opening is positioned at open slot, and described second adds
Strong muscle is divided into three the second grooves swing arm lower surface, and the second groove of nearly bulb assembly is the groove closed, described away from
The bulb pin-and-hole of opening is positioned at the outside of the second groove of nearly bulb assembly, and the bulb pin-and-hole away from opening is positioned at open slot,
Conveniently positioning casting when, the second groove of nearly bulb assembly is the groove closed, away from the bulb pin-and-hole of opening
It is positioned at the outside of the second groove of nearly bulb assembly, in the case of not affecting bulb assembly location, improves the carrying energy of swing arm
Power.
As preferably, the first described groove and the degree of depth of the second groove are 2~6 millimeters, both ensure that the strong of swing arm
Degree in turn ensure that the effect of dispersive stress.
As preferably, the first described reinforcement and the thickness of the second reinforcement are 15~30 millimeters, can preferably divide
Dissipate stress.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of lower swing arm assembly before automobile of the present invention.
Fig. 2 is the top view of lower swing arm assembly before automobile of the present invention.
Fig. 3 is the axonometric chart of lower swing arm another angle of assembly before automobile of the present invention.
Fig. 4 is the front view of lower swing arm assembly before automobile of the present invention.
Wherein, 1, lower swing arm assembly, 2, bulb assembly, 3, front lining, the 4, first reinforcement, the 5, first straight line, 6, circular arc
Line, 7, oblique line, the 8, first curve, the 9, second straight line, the 10, second curve, the 11, first circular arc line, the 12, second circular arc line, 13,
Three-arc line, 14, opening, 15, bulb pin-and-hole, 16, swing arm, the 17, second reinforcement, the 18, first groove, the 19, second groove.
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
As it can be seen, the present invention provides lower swing arm assembly before a kind of automobile, including lower swing arm main body assembly 1, described under
Swing arm main body assembly 1 is provided with bulb assembly 2 and front lining 3, is provided with swing arm 16 between described bulb assembly 2 and front lining 3,
The material of described lower swing arm main body assembly 1 is aluminium alloy, the medial surface of described swing arm 16 the projection of horizontal plane include with
First straight line 5 of plane-parallel and the circular arc line 6 being connected with the first straight line 5, the upper surface of described swing arm 16 is total at bulb
The perpendicular becoming 2 axis places includes oblique line 7 and the first curve 8 being connected with oblique line 7, and the lower surface of described swing arm 16 exists
The perpendicular at bulb assembly 2 axis place includes the second straight line 9 with plane-parallel and be connected second with the second straight line 9
Curve 10, the first described curve 8 is identical with the second curve 10 size shape, and the center of circle of described circular arc line 6 is positioned at circular arc line 6
Lower section, the arc radius of described circular arc line 6 is 110~140 millimeters, and the central angle of described circular arc line 6 is 50 °~70 °,
Described oblique line 7 is 10 °~20 ° with the angle of the plane at bulb assembly 2 upper surface place, and the first described curve 8 includes the
One circular arc line the 11, second circular arc line 12 and three-arc line 13, the first described circular arc line 11 is tangent with the second straight line 9, described
The second circular arc line 12 tangent with the first circular arc line 11, described three-arc line 13 is tangent with the second circular arc line 12, described
The center of circle of the first circular arc line 10 is positioned at the top of the first curve 8, and the arc radius of the first described circular arc line 11 is 350~500
Millimeter, the described central angle corresponding to the first circular arc line 10 is 8 °~16 °, and the center of circle of the second described circular arc line 12 is positioned at the
The lower section of one curve 8, the arc radius of the second described circular arc line 12 is 130~160 millimeters, the second described circular arc line 12 institute
Corresponding central angle is 20 °~50 °, and the center of circle of described three-arc line 13 is positioned at the top of the first curve 8, described the 3rd
The arc radius of circular arc line 13 is 50~80 millimeters, and the described central angle corresponding to three-arc line 13 is 10 °~30 °, this
The advantage of invention is that the material of lower swing arm main body assembly is changed into aluminium alloy by spheroidal graphite cast-iron, and processing mode is become from casting simultaneously
Forging, before the automobile produced, lower swing arm assembly is lightweight, in order to meet (pure electronic, the HA mixing of 5AEV of three kinds of different automobile types
Power and HAVE are pure electronic) bearing requirements and dodge the requirement of power transmission shaft, curved surface is set at swing arm 16 horizontal direction, by putting down
Face and arc surface composition, projection corresponding to plane is the first straight line 5, and what arc surface was corresponding is projected as circular arc line 6, plane and circular arc
Face is sequentially distributed to front lining 3 direction from bulb assembly 2, arranges curved surface at swing arm 16 longitudinal direction, by slope, the first circle
Cambered surface, the second arc surface and three-arc face composition, what slope was corresponding is projected as oblique line 7, corresponding being projected as of the first arc surface
First circular arc line 11, what the second arc surface was corresponding is projected as the second circular arc line 12, and what three-arc face was corresponding is projected as the 3rd circle
Camber line 13, oblique line, first circular arc line the 11, second circular arc line 12 and three-arc line 13 depend on to front lining 3 direction from bulb assembly 2
Secondary distribution, it is exactly a concrete shape of whole swing arm that horizontal curved surface combines with longitudinal curved surface, ensures various curved surface simultaneously
Size within the specific limits, horizontal radian change and increasing longitudinally between ball stud installation site and front lining installation site
Radian, advantage is that bearing capacity after can meeting changes in material requires to dodge again the drive mechanisms such as power transmission shaft and makes weight
Gently, low cost and versatility are good.
The arc radius of the first described circular arc line 11 is 400 millimeters, the described center of circle corresponding to the first circular arc line 10
Angle is 13 °, and effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
The arc radius of the second described circular arc line 12 is 150 millimeters, the described center of circle corresponding to the second circular arc line 12
Angle is 30 °, and effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
The arc radius of described three-arc line 13 is 70 millimeters, the described central angle corresponding to three-arc line 13
Being 18 °, effect is optimum, and dispersive stress is effective, and bearing capacity is strong.
Described bulb assembly 2 is provided with the convenient opening 14 positioned away from the side of front lining 3 one end, convenient the most total to bulb
Become to position, be conducive to location is installed, it is not necessary to additionally arrange the realization of locating dowel, beneficially Forging Technology.
Described bulb assembly 2 is provided with at least two bulb pin-and-hole 15, and two bulb pin-and-holes 15 lay respectively at opening 14
Both sides, easy for installation.
The quantity of described bulb pin-and-hole 15 is three, and described bulb pin-and-hole 15 becomes angular distribution, described swing arm 16
The side of nearly bulb assembly 2 one end is 10~17 millimeters to the distance at bulb pin-and-hole 15 center away from opening 14, convenient to ball
Head assembly 2 positions, simultaneously can preferably dispersive stress.
Described swing arm 16 upper surface is provided with two the first reinforcements 4, and described swing arm 16 lower surface is provided with two second
Reinforcement 17,4 swing arm 16 upper surfaces of the first described reinforcement are divided into three the first grooves 18, the first of nearly bulb assembly 2
Groove 18 is the opening open slot towards bulb assembly 2, and the described bulb pin-and-hole 15 away from opening 14 is positioned at open slot, institute
17 swing arm 16 lower surfaces of the second reinforcement stated are divided into three the second grooves 19, and the second groove 19 of nearly bulb assembly 2 is envelope
The groove closed, the described bulb pin-and-hole 15 away from opening 14 is positioned at the outside of the second groove 19 of nearly bulb assembly 2, keeps away
The bulb pin-and-hole position 15 of mouth 14, in open slot, conveniently positions, the second groove 19 of nearly bulb assembly 2 casting when
For the groove closed, it is positioned at the outside of the second groove 19 of nearly bulb assembly 2 away from the bulb pin-and-hole 15 of opening 14, is not affecting
The bearing capacity of swing arm 16 is improved in the case of bulb assembly 2 location.
The first described groove 18 and the degree of depth of the second groove 19 are 2~6 millimeters, not only ensure that swing arm 16 intensity but also
Ensure that the effect of dispersive stress.
The first described reinforcement 4 and the thickness of the second reinforcement 17 are 15~30 millimeters, can preferably dispersive stress.
Specifically, the principle of the present invention is that the material of lower swing arm main body assembly is changed into aluminium alloy by spheroidal graphite cast-iron, with
Time processing mode from casting become forging, before the automobile produced, lower swing arm assembly is lightweight, in order to meet three kinds of different cars
The bearing requirements of type (pure electronic, the HA hybrid power of 5AEV and HAVE are pure electronic) and dodge the requirement of power transmission shaft, in swing arm 16
Horizontal direction arranges curved surface, is made up of plane and arc surface, and projection corresponding to plane is the first straight line 5, the throwing that arc surface is corresponding
Shadow is that circular arc line 6, plane and arc surface are sequentially distributed to front lining 3 direction from bulb assembly 2, at swing arm 16 longitudinal direction
Arranging curved surface, be made up of slope, the first arc surface, the second arc surface and three-arc face, what slope was corresponding is projected as oblique line 7,
What the first arc surface was corresponding is projected as the first circular arc line 11, and what the second arc surface was corresponding is projected as the second circular arc line 12, the 3rd circle
What cambered surface was corresponding is projected as three-arc line 13, and oblique line, first circular arc line the 11, second circular arc line 12 and three-arc line 13 are from ball
Head assembly 2 is sequentially distributed to front lining 3 direction, and it is exactly that of whole swing arm is concrete that horizontal curved surface combines with longitudinal curved surface
Shape, ensures the size of various curved surface within the specific limits simultaneously, horizontal between ball stud installation site and front lining installation site
To radian change and increase longitudinal radian, advantage is the bearing requirements after meeting changes in material, dispersive stress and dodge biography
Moving axis, versatility is good, and the arc radius of described circular arc line 6 is 125 millimeters, and the central angle of described circular arc line 6 is 60 °, institute
The oblique line 7 stated is 15 ° with the angle of the plane at bulb assembly 2 upper surface place, the first described groove 18 and the second groove 19
The degree of depth be 4 millimeters, the first described reinforcement 4 and the thickness of the second reinforcement 17 are 20 millimeters, described swing arm 16
The side of nearly bulb assembly 2 one end is 14 millimeters to the distance at bulb pin-and-hole 15 center away from opening 14.
Above preferred embodiment of the present invention is described, but is not to be construed as limitations on claims.This
Bright being not only limited to above example, its concrete structure allows to change, all institutes in the protection domain of demand for independence of the present invention
The various changes made are the most within the scope of the present invention.