CN104070953A - Rear axle assembly - Google Patents

Rear axle assembly Download PDF

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Publication number
CN104070953A
CN104070953A CN201410249550.7A CN201410249550A CN104070953A CN 104070953 A CN104070953 A CN 104070953A CN 201410249550 A CN201410249550 A CN 201410249550A CN 104070953 A CN104070953 A CN 104070953A
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CN
China
Prior art keywords
back axle
rear arm
fixed
axle assembly
vehicle frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410249550.7A
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Chinese (zh)
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CN104070953B (en
Inventor
吴成辉
邓斌
龙江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Large Fenghe Motor Vehicle Of Loudi City Co Ltd
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Large Fenghe Motor Vehicle Of Loudi City Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Large Fenghe Motor Vehicle Of Loudi City Co Ltd filed Critical Large Fenghe Motor Vehicle Of Loudi City Co Ltd
Priority to CN201410249550.7A priority Critical patent/CN104070953B/en
Publication of CN104070953A publication Critical patent/CN104070953A/en
Application granted granted Critical
Publication of CN104070953B publication Critical patent/CN104070953B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The embodiment of the invention discloses a rear axle assembly. The rear axle assembly comprises a rear axle, two rear rocker arms symmetrically arranged at the two sides of the rear axle, and two spring shock absorbers arranged above the rear axle. First ends of the two rear rocker arms are fixed on the rear axle through rocker arm fixing pieces, and are perpendicular to the axis of the rear axle, and second ends of the rear rocker arms are connected with a first cross bar of a car frame to form a rotating pair. The bottom ends of the two spring shock absorbers are fixed on the upper end surfaces of the first ends of the rear rocker arms, and the top ends of the two spring shock absorbers are connected with the bottom of a car body. The rear axle assembly can enhance the car driving stability and the sitting comfort, and is in favor of reducing the weight of a car and realizing the miniaturization.

Description

Back axle assembly
Technical field
The present invention relates to vehicular field, relate in particular to a kind of back axle assembly for dependent suspension structure vehicle.
Background technology
To be both sides wheel be connected by a rigid axle constructional feature of the dependent suspension in vehicle, wheel together with vehicle bridge by resilient suspension structure be suspended on vehicle frame or vehicle body below.The resilient suspension structure of dependent suspension structure vehicle adopts steel spring more in the market.Because steel spring rigidity is larger, running into while jolting road surface, almost there is no shock-absorbing functions, so traveling comfort is poor.Simultaneously Leaf Spring Suspension structural weight heavy, to the having relatively high expectations of longitudinal length, be unfavorable for loss of weight and the micro-miniaturisation of vehicle.
Summary of the invention
The object of the present invention is to provide a kind of back axle assembly for dependent suspension structure vehicle, it can improve the travelling comfort of vehicle, and is conducive to the micro-miniaturisation of vehicle loss of weight and vehicle.
According to embodiments of the invention, a kind of back axle assembly is provided, comprise back axle, two rear arms that are symmetricly set in described back axle both sides, and two spring dampers that are arranged at described back axle top;
The first end of each rear arm is fixed on described back axle by rocking arm connecting element and is vertical with the axle center of described back axle, and the first cross bar of the second end of rear arm and vehicle frame is connected to form revolute pair;
The upper surface of described rear arm first end is fixed in the bottom of each spring damper, and its top is connected with body bottom.
Wherein, the angle between the line of centers of described spring damper and the line of centers of described rear arm is less than 90 degree.
Preferably, the angle between the line of centers of described spring damper and the line of centers of described rear arm is 80 degree ~87 degree.
Further, described back axle assembly also comprises:
Adjustable and balancing bar, its one end is fixedly connected with the second cross bar of vehicle frame, and the other end is fixedly connected with back axle, to connect described vehicle frame and described back axle at horizontal direction and to regulate the distance at two ends and the described vehicle frame center of described back axle.
Preferably, the second cross bar of described vehicle frame is provided with fixedly angle steel, described back axle is provided with the adapter plate extending along the longitudinal direction, and one end of described adjustable and balancing bar is fixed on described fixedly angle steel, and the other end of described adjustable and balancing bar is fixed on described adapter plate.
Preferably, back axle assembly comprises at least one in following technical characterictic:
Described adjustable and balancing bar comprises the threaded adjusting body of rod and is arranged at the first ball head connecting piece and second ball head connecting piece at described threaded adjusting body of rod two ends, the first ball head connecting piece is fixed on described fixedly angle steel, and the second ball head connecting piece is fixed on described adapter plate;
Described spring damper comprises base, is articulated with the anchor shaft on described base and is sheathed on the spring on described anchor shaft; Described base is fixed on the upper surface of described rear arm first end.
Preferably, described rocking arm connecting element comprises that longitudinal cross-section is single arch-shaped permanent seat and bolt;
The upper plane of described permanent seat is fixed on the below of described rear arm first end, recessed being embedded on described back axle of concave portions in described permanent seat;
Described permanent seat two ends along the longitudinal direction have the axle center through hole vertical with back axle axle center; On the first end of described rear arm, have the axle center of two through holes on axle center and described permanent seat at collinear two through holes;
Described bolt screws in back axle after penetrating respectively the through hole of rear arm first end and the through hole on described permanent seat, and described rear arm is fixed on described back axle; Wherein,
The direction that extend in described back axle axle center is that laterally the direction vertical with described back axle axle center is longitudinal.
Preferably, described rear arm is rectangular steel tube.
As optimal technical scheme, at the second end of rear arm and the first cross bar of vehicle frame, be bolted formation revolute pair.
Further, between the both sides of described rear arm the second end and described bolt, be provided with cushion rubber
From above technical scheme, in the present invention, the rear arm of back axle assembly is for connecting vehicle frame and back axle, when wheel is during with the fluctuating dandle on ground, rear arm in the present invention is converted into the application force of wheel vertical direction the centripetal force of rotating around rear arm the second end end points by the revolute pair of its second end, and this centripetal force is acted on spring damper, thereby effectively avoided vehicle body to follow wheel dandle, reached the effect of stablizing vehicle body.Adjustable and balancing bar structure in back axle assembly makes vehicle can not produce double swerve simultaneously, has further strengthened the stability of vehicle and the traveling comfort of taking.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows the structural representation as the back axle assembly of the preferred embodiment of the present invention;
Fig. 2 shows the birds-eye view of back axle assembly in Fig. 1;
Fig. 3 shows the scheme of installation of rear arm;
Fig. 4 shows the connection diagram of rear arm and back axle, spring damper
Illustrate: 1-back axle, 2-rear arm, 3-spring damper, 4-adjustable and balancing bar, 5-the first cross bar, 6-the second cross bar, 7-rocking arm connecting element, 31-base, 32-anchor shaft, 33-spring, 41-is angle steel fixedly, 42-adapter plate, 71-permanent seat, 72-bolt of rear end plate.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Below by specific embodiment, the structure of back axle assembly in the present invention is described in detail.
Fig. 1 shows the structural representation as the back axle assembly of the preferred embodiment of the present invention.
Fig. 2 shows the birds-eye view of back axle assembly in Fig. 1.As depicted in figs. 1 and 2, back axle assembly comprises back axle 1, two rear arm 2 and two spring dampers 3 that are arranged at back axle 1 top that are symmetricly set in back axle 1 both sides.
Fig. 3 shows the scheme of installation of rear arm.As shown in Figure 3, the first end of each rear arm 2 is fixed on back axle 1 by rocking arm connecting element 7 and is vertical with the axle center of back axle 1, and the first cross bar 5 of the second end of rear arm 2 and vehicle frame is connected to form revolute pair.Preferably, the rear arm in the embodiment of the present invention is rectangular steel tube.It is exemplary that rear arm adopts rectangular steel tube, and the steel-tube construction of other hollows or entity steel structure all fall into protection scope of the present invention.
Preferably, two rear arms in the present invention are installed on the top of back axle 1, and it act as the road clearance that increases back axle 1.
For convenience of description, define place, back axle axle center direction for horizontal in the present invention, the direction vertical with back axle axle center is defined as longitudinally.
In the specific embodiment of the present invention, for being fixedly connected with the rocking arm connecting element 7 of each rear arm and back axle, comprise that longitudinal cross-section is single arch-shaped permanent seat 71 and bolt 72.As shown in Figure 4, the upper plane-welding of permanent seat 71 or utilize other fixed forms to be fixed on the below of rear arm first end, recessed being embedded on back axle 1 of concave portions in permanent seat 71, permanent seat 71 two end symmetries are along the longitudinal direction positioned at the both sides in back axle axle center.Preferably, permanent seat can be selected the hollow structure of solid construction or lateral cross section such as " n " shape.Two ends of permanent seat all have the axle center through hole vertical with back axle axle center, and accordingly, the first end of rear arm is provided with two through holes, and on the axle center of these two through holes and permanent seat, the axle center of two through holes is respectively on same straight line.In two through holes of rear arm first end, all 72, two bolts of inserting bolt screw in back axle 1 through after the through hole at permanent seat two ends respectively, and rear arm 2 is fixed on back axle 1.In the present embodiment, the structure of rocking arm connecting element is example shape, and every other structures that rear arm can be fixed on back axle all fall into protection scope of the present invention.
Preferably, the first cross bar of the second end of rear arm 2 and vehicle frame is bolted formation revolute pair.Vehicle frame in the preferred embodiment of the present invention comprises the first cross bar 5 and the second cross bar 6.Certainly, employing comprises that the vehicle frame of the first cross bar and the second cross bar is exemplary, when vehicle frame adopts other structures, the second end of rear arm is secured by bolts in the corresponding site of vehicle frame, if make the line of centers of rear arm 2 and the axle center of back axle vertical.
Further, between the both sides of the second end of each rear arm and bolt, be also provided with cushion rubber.Preferably, the cushion rubber in the present invention adopts elastomeric material to make, and it act as avoids rear arm 2 to be rigidly connected with bolt, plays flexible buffer effect.
In the process of moving, the fluctuating vehicle with landing ground can not stop to rock thereupon up and down.Because the direct contact point on vehicle and ground is wheel, when wheel dandle, rear arm in the present invention is converted into the application force of wheel vertical direction the centripetal force of rotating around rear arm the second end end points by the revolute pair of its second end, effectively avoid vehicle body to follow wheel dandle, reached the effect of stablizing vehicle body.Simultaneously between the both sides of the second end of each rear arm and bolt, cushion rubber being set increases rubber buffer, can further increase vehicle stability in motion, makes passenger more comfortable when taking.
In the present invention, the upper surface of rear arm 2 first ends is fixed in the bottom of each spring damper 3, and the top of each spring damper 3 is connected with body bottom.Preferably, as shown in Figure 4, the spring damper 3 in the present invention comprises base 31, is articulated with the anchor shaft 32 on base and is sheathed on the spring 33 on anchor shaft.Wherein, the base of spring damper 3 is fixed on the upper surface of rear arm 2 first ends.Angle between the line of centers of spring damper and the line of centers of rear arm is preferably less than 90 degree.Particularly, the angle between the line of centers of spring damper 3 and the line of centers of rear arm 2 can be 80 degree~87 degree.Checking by experiment, the angle between the line of centers of spring damper 3 and the line of centers of rear arm 2 is 82 while spending, damping effect the best.
In the present invention, between the line of centers of the line of centers of spring damper 3 and rear arm 2, angle is set to be less than 90 degree, due to when vehicle travels on the road surface of fluctuating, the vertical direction application force that rear arm pitches wheel is converted into centripetal force by revolute pair, and the moment sense of motion of wheel changes the tangential direction around the rotation of rear arm the second end end points into.Medi-spring bumper line of centers of the present invention is parallel around the tangential direction of rear arm the second end end points rotation with wheel, and spring damper can bear the pressure of wheel on Maximum Contact area, thereby can realize to greatest extent damping effect.
Further, the back axle assembly in the present invention also comprises the adjustable and balancing bar 4 between two rear arms 2.Adjustable and balancing bar 4 is between two rear arms 2.Preferably, one end of the adjustable and balancing bar 4 in the present invention is fixedly connected with the second cross bar of vehicle frame, and the other end is fixedly connected with back axle.Adjustable and balancing bar 4 is for connecting vehicle frame and back axle, and can realize vehicle frame and back axle in the connection of horizontal direction.
As preferred embodiment, adjustable and balancing bar 4 is fixedly connected with back axle 1 with vehicle frame respectively with adapter plate 42 by fixing angle steel 41.Particularly, fixedly angle steel 41 is arranged on the second cross bar of vehicle frame, and adapter plate 42 is fixed on back axle 1 and along the longitudinal direction and extends.Preferably, fixedly angle steel is near a rear flank rocking arm, and adapter plate is near opposite side rear arm.One end of adjustable and balancing bar 4 is fixed on fixedly on angle steel, and the other end is fixed on adapter plate.Adjustable and balancing bar 4 has certain development length along horizontal direction.Adjustable and balancing bar 4 is exemplary by fixedly angle steel and adapter plate connecting vehicle frame and back axle, and every fixed structure piece that adjustable and balancing bar 4 can be fixed between vehicle frame and back axle all falls into protection scope of the present invention.
As the preferred embodiment in each embodiment, the adjustable and balancing bar 4 in the present invention comprises the threaded adjusting body of rod and is arranged at the first ball head connecting piece and second ball head connecting piece at threaded adjusting body of rod two ends.Wherein, the first ball head connecting piece is fixed on fixedly on angle steel, and the second ball head connecting piece is fixed on adapter plate.Adjustable and balancing bar 4 is for laterally connecting back axle and vehicle frame, and by the threaded adjusting body of rod, regulates the distance at two ends and the vehicle frame center of back axle.
The advantage of the adjustable and balancing bar in the present invention is: 1, back axle is connected by rear arm with vehicle body, and the setting party of rear arm is to vertical with back axle, can not guarantee back axle rocking in the horizontal direction.Trammel beam one end in the present invention is fixed on the vehicle frame near left side rear arm, the other end is fixed on one end of close right side rear arm in back axle, thereby adjustable and balancing bar is fixed back axle and vehicle frame in the horizontal direction, thereby guarantee that back axle does not rock in the horizontal direction, the stability while further having increased Vehicle Driving Cycle.2, when vehicle used after a period of time, back axle has the unsceptered of certain amplitude, and vehicle centre-line is not symmetrical relatively.When back axle two ends are not in relation to vehicle centre-line symmetry, the sympathetic meeting of the driving variation of vehicle, vehicle easily produces double swerve.Adjustable and balancing bar can manually be realized the adjusting to back axle when automotive servicing maintains, and makes back axle two ends symmetrical about vehicle centre-line, avoids vehicle to produce in motion double swerve.
As from the foregoing, in the present invention, the rear arm of back axle assembly is for connecting vehicle frame and back axle, when wheel is during with the fluctuating dandle on ground, rear arm in the present invention is converted into the application force of wheel vertical direction the centripetal force of rotating around rear arm the second end end points by the revolute pair of its second end, and this centripetal force is acted on spring damper, thereby effectively avoided vehicle body to follow wheel dandle, reached the effect of stablizing vehicle body.Adjustable and balancing bar structure in back axle assembly makes vehicle can not produce double swerve simultaneously, has further strengthened the stability of vehicle and the traveling comfort of taking.
Because the present invention adopts rear arm and spring damper, substitute the resilient suspension structure that existing vehicle uses leaf spring bumper, thereby the present invention has advantages of the vehicle riding comfort of enhancing, is beneficial to the loss of weight of vehicle and realizes micro-miniaturisation.
The foregoing is only preferred embodiment of the present invention, not for limiting the scope of the invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., within all should being included in the protection domain that this reality invent.

Claims (10)

1. a back axle assembly, comprises back axle, it is characterized in that, also comprises two rear arms that are symmetricly set in described back axle both sides, and two spring dampers that are arranged at described back axle top;
The first end of each rear arm is fixed on described back axle by rocking arm connecting element and is vertical with the axle center of described back axle, and the first cross bar of the second end of rear arm and vehicle frame is connected to form revolute pair;
The upper surface of described rear arm first end is fixed in the bottom of each spring damper, and its top is connected with body bottom.
2. back axle assembly according to claim 1, is characterized in that, the angle between the line of centers of described spring damper and the line of centers of described rear arm is less than 90 degree.
3. back axle assembly according to claim 2, is characterized in that, the angle between the line of centers of described spring damper and the line of centers of described rear arm is 80 degree~87 degree.
4. according to arbitrary described back axle assembly in claims 1 to 3, it is characterized in that, also comprise:
Adjustable and balancing bar, its one end is fixedly connected with the second cross bar of vehicle frame, and the other end is fixedly connected with back axle, to connect described vehicle frame and described back axle at horizontal direction and to regulate the distance at two ends and the described vehicle frame center of described back axle.
5. back axle assembly according to claim 4, it is characterized in that, the second cross bar of described vehicle frame is provided with fixedly angle steel, described back axle is provided with the adapter plate extending along the longitudinal direction, one end of described adjustable and balancing bar is fixed on described fixedly angle steel, and the other end of described adjustable and balancing bar is fixed on described adapter plate.
6. back axle assembly according to claim 4, is characterized in that, comprises at least one in following technical characterictic:
Described adjustable and balancing bar comprises the threaded adjusting body of rod and is arranged at the first ball head connecting piece and second ball head connecting piece at described threaded adjusting body of rod two ends, the first ball head connecting piece is fixed on described fixedly angle steel, and the second ball head connecting piece is fixed on described adapter plate;
Described spring damper comprises base, is articulated with the anchor shaft on described base and is sheathed on the spring on described anchor shaft; Described base is fixed on the upper surface of described rear arm first end.
7. back axle assembly according to claim 4, is characterized in that, described rocking arm connecting element comprises that longitudinal cross-section is single arch-shaped permanent seat and bolt;
The upper plane of described permanent seat is fixed on the below of described rear arm first end, recessed being embedded on described back axle of concave portions in described permanent seat;
Described permanent seat two ends along the longitudinal direction have the axle center through hole vertical with back axle axle center; On the first end of described rear arm, have the axle center of two through holes on axle center and described permanent seat at collinear two through holes;
Described bolt screws in back axle after penetrating respectively the through hole of rear arm first end and the through hole on described permanent seat, and described rear arm is fixed on described back axle; Wherein,
The direction that extend in described back axle axle center is that laterally the direction vertical with described back axle axle center is longitudinal.
8. back axle assembly according to claim 7, is characterized in that, described rear arm is rectangular steel tube.
9. back axle assembly according to claim 1, is characterized in that, at the second end of rear arm and the first cross bar of vehicle frame, is bolted formation revolute pair.
10. back axle assembly according to claim 9, is characterized in that, between the both sides of described rear arm the second end and described bolt, is provided with cushion rubber.
CN201410249550.7A 2014-06-06 2014-06-06 Rear axle assy Expired - Fee Related CN104070953B (en)

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Application Number Priority Date Filing Date Title
CN201410249550.7A CN104070953B (en) 2014-06-06 2014-06-06 Rear axle assy

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Application Number Priority Date Filing Date Title
CN201410249550.7A CN104070953B (en) 2014-06-06 2014-06-06 Rear axle assy

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CN104070953B CN104070953B (en) 2017-01-04

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105774995A (en) * 2014-12-24 2016-07-20 卫美恒(苏州)医疗器械有限公司 Scooter
CN105799440A (en) * 2016-03-17 2016-07-27 深圳市神州云海智能科技有限公司 Hanging mechanism
CN108556916A (en) * 2018-06-15 2018-09-21 长沙行深智能科技有限公司 A kind of vehicle chassis
CN109484111A (en) * 2018-12-15 2019-03-19 杭州容大智造科技有限公司 A kind of trailing arm for suspension
CN109515094A (en) * 2018-12-29 2019-03-26 新乡市合众鑫辉车业有限公司 A kind of electric car rear suspension structure
CN110116598A (en) * 2018-02-07 2019-08-13 郑州宇通客车股份有限公司 A kind of suspension system and the vehicle using the suspension system
CN112693551A (en) * 2020-12-31 2021-04-23 台州市佑吉车业科技股份有限公司 Electric tricycle

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CN102152724A (en) * 2011-03-09 2011-08-17 奇瑞汽车股份有限公司 Transverse stabilizer bar device of automobile
CN202088859U (en) * 2011-05-31 2011-12-28 江苏伊美吉电动车辆制造有限公司 Independent rear suspension transmission device of electric vehicle
CN102717857A (en) * 2012-06-29 2012-10-10 重庆建设摩托车股份有限公司 Independent front suspension structure of all-terrain four-wheel motorcycle
CN103640658A (en) * 2013-12-07 2014-03-19 刘景物 Shock absorption system for rear axle of electro-tricycle
CN203888563U (en) * 2014-06-06 2014-10-22 娄底市大丰和电动车辆有限公司 Rear axle assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102152724A (en) * 2011-03-09 2011-08-17 奇瑞汽车股份有限公司 Transverse stabilizer bar device of automobile
CN202088859U (en) * 2011-05-31 2011-12-28 江苏伊美吉电动车辆制造有限公司 Independent rear suspension transmission device of electric vehicle
CN102717857A (en) * 2012-06-29 2012-10-10 重庆建设摩托车股份有限公司 Independent front suspension structure of all-terrain four-wheel motorcycle
CN103640658A (en) * 2013-12-07 2014-03-19 刘景物 Shock absorption system for rear axle of electro-tricycle
CN203888563U (en) * 2014-06-06 2014-10-22 娄底市大丰和电动车辆有限公司 Rear axle assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105774995A (en) * 2014-12-24 2016-07-20 卫美恒(苏州)医疗器械有限公司 Scooter
CN105774995B (en) * 2014-12-24 2019-03-22 卫美恒(苏州)医疗器械有限公司 A kind of scooter
CN105799440A (en) * 2016-03-17 2016-07-27 深圳市神州云海智能科技有限公司 Hanging mechanism
CN110116598A (en) * 2018-02-07 2019-08-13 郑州宇通客车股份有限公司 A kind of suspension system and the vehicle using the suspension system
CN108556916A (en) * 2018-06-15 2018-09-21 长沙行深智能科技有限公司 A kind of vehicle chassis
CN109484111A (en) * 2018-12-15 2019-03-19 杭州容大智造科技有限公司 A kind of trailing arm for suspension
CN109515094A (en) * 2018-12-29 2019-03-26 新乡市合众鑫辉车业有限公司 A kind of electric car rear suspension structure
CN112693551A (en) * 2020-12-31 2021-04-23 台州市佑吉车业科技股份有限公司 Electric tricycle
CN112693551B (en) * 2020-12-31 2022-05-31 台州市佑吉车业科技股份有限公司 Electric tricycle

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