CN110341795A - A kind of electric car and its Rear secondary frame for vehicle - Google Patents

Abstract

The present invention discloses a kind of electric car and its Rear secondary frame for vehicle, wherein, the Rear secondary frame for vehicle includes the spaced first crossbeam of front-rear direction, second cross beam, therebetween the first stringer, the second stringer are connected with, first stringer is located at the top of second stringer, first stringer includes the first left stringer, the first right vertical beam, and second stringer includes the second left stringer, the second right vertical beam；If at least one of the first crossbeam, the second cross beam, first stringer and described second stringer are the non-uniform beam being enclosed by dry plate beam, each described beam is the not closed plate structure in section.Rear secondary frame for vehicle provided by the present invention, if at least one of its each crossbeam, stringer are enclosed by dry plate beam, the non-uniform beam with complex section can be easily enclosed, to meet the bearing strength demand of different zones, also just without installing stiffening plate, so that the installation of the Rear secondary frame for vehicle is more easy, structure is more simple.

Description

A kind of electric car and its Rear secondary frame for vehicle

Technical field

The present invention relates to electric vehicle engineering field more particularly to a kind of electric cars and its Rear secondary frame for vehicle.

Background technique

For traditional internal-combustion engines vehicle, power assembly is usually provided in the front of car body, sets to Rear secondary frame for vehicle Timing, without considering the influence of power assembly, it is only necessary to provide installation point for suspension system and periphery other component, and foot is provided The design space of enough intensity, Rear secondary frame for vehicle is relatively abundant, and design difficulty is relatively low.

However, with the development of new-energy automobile, the vehicle of motor postposition starts to occur, at this point, Rear secondary frame for vehicle just needs Enough installation spaces are provided for motor, transmission shaft etc., or even need carrying motor completely, while being still to as suspension system and week Side other component provides installation point, and the design space of Rear secondary frame for vehicle becomes narrow, and design constraints factor increases, and design difficulty is substantially Increase.

For above situation, a kind of Rear secondary frame for vehicle of aluminium alloy casting and forming exists in the prior art, the Rear secondary frame for vehicle It is hollowed out in the middle part of stringer, to be passed through transmission shaft.However, the difficulty of aluminum alloy casting technique is larger for this large size product, Technology stability is poor, it is difficult to guarantee the quality of product, and manufacturing cost is also higher.

In the prior art there is also a kind of Rear secondary frame for vehicle using tubular beam welding fabrication, due to welding procedure relative at Ripe, the Rear secondary frame for vehicle difficulty of processing of this form is lower.But since the cross sectional shape of tubular beam is relatively fixed, in part area Domain, bearing strength are difficult to meet the requirements, and need to install stiffening plate, this overall structure that will lead to Rear secondary frame for vehicle becomes multiple Miscellaneous, installation and subsequent maintenance become difficult.

Therefore, it is simple how to provide a kind of structure, is easily installed, and is suitable for the rear secondary vehicle of power assembly postposition vehicle Frame is still those skilled in the art's technical problem urgently to be resolved.

Summary of the invention

The object of the present invention is to provide a kind of electric car and its Rear secondary frame for vehicle, wherein the Rear secondary frame for vehicle is suitable for power The electric car of assembly postposition, and structure is simple, is easily installed.

In order to solve the above technical problems, the present invention provides a kind of Rear secondary frame for vehicle of electric car, including front-rear direction interval First crossbeam, the second cross beam of setting, are connected with therebetween the first stringer, the second stringer, and first stringer is located at described The top of second stringer, first stringer include the first left stringer, the first right vertical beam, and second stringer includes second left vertical Beam, the second right vertical beam；At least one of the first crossbeam, the second cross beam, first stringer and described second stringer If each described beam is the not closed plate structure in section for the non-uniform beam being enclosed by dry plate beam.

Rear secondary frame for vehicle provided by the present invention, if at least one of each crossbeam, stringer are enclosed by dry plate beam, each beam It is the not closed plate structure in section, it, can be convenient for forming various complex sections, so since the processing of plate structure is relatively easy Each beam is docked afterwards, the non-uniform beam with complex section can be enclosed, easily to meet different zones Bearing strength demand.

Compared with tubular beam in the prior art, since the non-uniform beam being enclosed above by each beam has been able to completely Sufficient bearing strength demand also just without installing stiffening plate, so that the installation of the Rear secondary frame for vehicle is more easy, and is tied during installation Structure is more simple.

Optionally, the first crossbeam includes piece beam after the first anter beam, first, and the both ends of the first anter beam are all provided with It dashes forward before having first arc-like sheet, the both ends of piece beam are equipped with the first processus aboralis arc-like sheet after described first；Prominent arc-like sheet before described first First can be enclosed with the corresponding first processus aboralis arc-like sheet to fill the span of a man's arms mechanism, for installing first sleeve.

Optionally, arc-like sheet of dashing forward before described first includes anter on spaced first, the first lower anter, and described first Processus aboralis arc-like sheet includes rear piece on spaced first, the first lower rear piece；Anter under anter and described first on described first Between, on described first after piece and it is described first it is lower after form groove between piece.

Optionally, piece beam has positioning protrusion backwards after described first, and the front end of first stringer can be coated on The positioning protrusion.

Optionally, the second cross beam includes piece beam after the second anter beam, second, and the both ends of the second anter beam are all provided with It dashes forward before having second arc-like sheet, the both ends of piece beam are equipped with the second processus aboralis arc-like sheet after described second；Prominent arc-like sheet before described second Second can be enclosed with the corresponding second processus aboralis arc-like sheet to fill the span of a man's arms mechanism, for installing the second casing.

Optionally, the second cross beam has recessed portion backwards, and the rear end of first stringer can be coated on described Recessed portion.

Optionally, arc-like sheet of dashing forward before described second includes anter on second, and the second processus aboralis arc-like sheet includes that interval is set Piece after on second set, second it is lower after piece, on described second after piece and it is described second it is lower after form groove between piece；Described first Stringer includes the first upper piece beam and the first bottom sheet beam, and the rear end of the first bottom sheet beam is equipped with lower arc portion, and described second fills the span of a man's arms machine Structure further includes the lower arc portion；When first stringer and the recessed portion are in coated state, anter and institute on described second Piece is filled the span of a man's arms the upper end of second casing after stating on second, described second it is lower after piece, the lower arc portion fill the span of a man's arms described second set The lower end of pipe.

Optionally, the rear end of described first upper piece beam is additionally provided with arc portion, and the upper arc portion is opposite with the lower arc portion to be set It sets, and the upper arc portion can be coated on anter on described second；Second casing be installed on described second fill the span of a man's arms mechanism when, There is evacuation gap between the upper arc portion and the outer wall of second casing.

Optionally, the sectional dimension in first stringer rear and front end portion is greater than the sectional dimension in the middle part of it.

Optionally, the first crossbeam, the second cross beam are equipped with lower protrusion, and the lower protrusion is equipped in the front-back direction Mounting hole, second stringer are plugged in the mounting hole of the first crossbeam, the second cross beam.

Optionally, the mounting hole set on the first anter beam, the second anter beam has preceding prominent flange, is set to institute The mounting hole of piece beam has the flange of processus aboralis after piece beam, described second after stating first, and the height of the flange is 5-10mm.

Optionally, second stringer is plugged in the part of the mounting hole, and peripheral wall is equipped with flow-guiding mouth.

Optionally, there is arc evacuation between the lower protrusion of the first crossbeam and the end of the first crossbeam Portion, and the size of the end of the first crossbeam in above-below direction is less than other positions.

Optionally, the described first fill the span of a man's arms mechanism, described second mechanism that fills the span of a man's arms is to fill the span of a man's arms mechanism greater than the arc of 180 degree.

The present invention provides a kind of electric car, including Rear secondary frame for vehicle, which is the rear secondary vehicle of above-mentioned electric car Frame.

Since the Rear secondary frame for vehicle of above-mentioned electric car has had technical effect as above, then, there is the Rear secondary frame for vehicle Electric car also when having similar technical effect, therefore this will not be repeated here.

Detailed description of the invention

Fig. 1 is a kind of stereochemical structure signal of specific embodiment of the Rear secondary frame for vehicle of electric car provided by the present invention Figure；

Fig. 2 is the side view of Fig. 1

Fig. 3 is the rearview of Fig. 1；

Fig. 4 is the top view of Fig. 1；

Fig. 5 is the schematic perspective view of first crossbeam in the Rear secondary frame for vehicle of electric car provided by the present invention；

Fig. 6 is the first partial enlarged view for filling the span of a man's arms mechanism in Fig. 5；

Fig. 7 is the top view of Fig. 6；

Fig. 8 is the front view of Fig. 6；

Fig. 9 is the schematic perspective view of second cross beam in the Rear secondary frame for vehicle of electric car provided by the present invention；

Figure 10 is the top view of Fig. 9；

Figure 11 is the second partial enlarged view for filling the span of a man's arms mechanism in Fig. 9；

Figure 12 is the structural schematic diagram of the first stringer of the Rear secondary frame for vehicle of electric car provided by the present invention；

Figure 13 is the side view of Figure 12；

Figure 14 is the attachment structure schematic diagram of second cross beam and the first stringer；

Figure 15 is the second partial enlarged view for filling the span of a man's arms mechanism in Figure 14；

Figure 16 is the structural schematic diagram of the second stringer of the Rear secondary frame for vehicle of electric car provided by the present invention.

The reference numerals are as follows in Fig. 1-16:

Dash forward before 1 first crossbeam, 11 first anter beams, 111 first arc-like sheet, before anter, 111b first are lower on 111a first Piece beam behind piece, 12 first, 121 first processus aboralis arc-like sheets, on 121a first after piece, 121b first it is lower after pieces, 122 positioning protrusion, 13 lower protrusions, 131 mounting holes, 14 arc relief portion；

It dashes forward before 2 second cross beams, 21 second anter beams, 211 second arc-like sheet, anter, 212 recessed portions, 22 on 211a second Piece beam after second, 221 second processus aboralis arc-like sheets, on 221a second after piece, 221b second it is lower after piece；

3 first stringers, 31 first upper piece beams, arc portion, 32 first bottom sheet beams, 321 lower arc portions on 311；

4 second stringers, 5 first sleeves, 6 second casings, 7 motor mounting brackets, 8 oscillating arm brackets, 9 connecting rod racks；

A first fill the span of a man's arms mechanism, a groove, B second fill the span of a man's arms mechanism, X evacuation gap.

Specific embodiment

It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention Applying example, the present invention is described in further detail.

It is described herein it is " several " be that exponential quantity is uncertain multiple, it is usually more than two；And when using " several " table When showing the quantity of certain several component, the quantity for being not offered as these components is identical.

The words such as " first " described herein, " second ", be merely for convenience of description scheme same or like two with On structure or component, be not offered as certain particular determination to sequence.

Herein, using the driving direction of vehicle as front-rear direction, wherein before the position by near-car head is, close to the tailstock After position is, front-rear direction is also referred to as longitudinal；In the horizontal plane, the direction vertical with front-rear direction is left and right directions, with Driver is reference, and driver's left hand direction is left-hand, and right-hand direction is dextrad, and left and right directions is also referred to as laterally；Up and down Direction, that is, vertical direction, in the vertical direction, far from ground direction be referred to as on, close to ground direction be referred to as under.

Fig. 1-4 is please referred to, Fig. 1 is a kind of the vertical of specific embodiment of the Rear secondary frame for vehicle of electric car provided by the present invention Body structural schematic diagram, Fig. 2 are the side view of Fig. 1, and Fig. 3 is the rearview of Fig. 1, and Fig. 4 is the top view of Fig. 1.

As shown in Figs 1-4, the present invention provides a kind of Rear secondary frame for vehicle of electric car, including front-rear direction spaced One crossbeam 1, second cross beam 2, are connected with therebetween the first stringer 3, the second stringer 4, and the first stringer 3 is located at the second stringer 4 Top, the first stringer 3 include the first left stringer, the first right vertical beam, and the second stringer 4 includes the second left stringer, the second right vertical beam.

Above-mentioned each crossbeam, stringer can be enclosed the installation space of the power assemblies such as motor, after adapting to power assembly The vehicle set；As shown in Fig. 2, can have gap between the first stringer 3 and the second stringer 4, the transmission shaft of motor can be between being somebody's turn to do Gap passes through, to realize that power transmits；Meanwhile the installation branch of motor, suspension system is also provided on above-mentioned each crossbeam, stringer Frame, to install motor and suspension system.

Specifically, Fig. 1, Fig. 4 be can refer to, the top of two first stringers 3 of first crossbeam 1, second cross beam 2 and left and right is all provided with There is motor mounting bracket 7, to fix motor；It is equipped with oscillating arm bracket 8 on first stringer 3, the second stringer 4, to fix suspension system The swing arm of system specifically can be used for fixing the upper swing arm of suspension system set on the oscillating arm bracket 8 of the first stringer 3, be set to second The oscillating arm bracket 8 of stringer 4 then can be used for fixing the lower swing arm of suspension system；The side of first stringer 3 is also provided with connecting rod branch Frame 9, to fix the connecting rod of suspension system.

It is appreciated that Rear secondary frame for vehicle provided by the present invention is additionally provided with other brackets in addition to the bracket of above-mentioned several forms, For fixing the components such as stabiliser bar in suspension system, drag link, but since it is not core of the invention improvement, herein It is not described in detail, when specifically used, those skilled in the art can install on corresponding crossbeam, stringer according to actual needs Corresponding bracket.

It is different from the prior art, Rear secondary frame for vehicle provided by the present invention, if at least one of each crossbeam, stringer are by dry plate beam It is enclosed, each beam is the not closed plate structure in section, various multiple convenient for being formed since plate structure processing is relatively easy Then miscellaneous section docks each beam, can easily be enclosed the non-uniform beam with complex section, to meet not With the bearing strength demand in region.

Since the non-uniform beam being enclosed above by each beam has been able to meet bearing strength demand, installing When, also just without installing stiffening plate, so that the installation of Rear secondary frame for vehicle is more easy, structure is more simple.

By taking the first stringer 3 as an example, rear and front end needs to be connected with first crossbeam 1, second cross beam 2, higher to guarantee Bonding strength, the rear and front end of the first stringer 3 need to have biggish size, and due to the limitation of installation space, in the middle part of Size requires smaller.

At this point, as following several method can be used: 1) to meet above-mentioned requirements using tubular beam in the prior art Then segmental machining along the longitudinal direction assembles, rear and front end can use large-diameter pipe, and small diameter tube can be used in middle position, this The stringer of form, the junction stress between each section of front-rear direction are weak, it is difficult to meet the carrying demand of motor；2) stringer is whole Using large-diameter pipe, this is difficult to meet requirements of installation space again；3) stiffening plate, such as background technology part are installed at the both ends of stringer Described, this will increase the structural complexity and installation difficulty of Rear secondary frame for vehicle.

And if using Rear secondary frame for vehicle provided by the present invention, in processing, either to pass through punching there are for two panels beam It presses or casts, be convenient to obtain the board-like beam that rear and front end is big, centre is small, then dock two panels beam, i.e., The longitudinal beam structure that can be met the requirements not only is easily worked, is easily installed, and also can avoid the generation of redundancy structure, so that after The overall structure of subframe is more simple.

Specific to the embodiment of the present invention, each beam for forming crossbeam or stringer is preferably formed using impact style, be can be improved The surface quality of production efficiency, obtained piece beam is more preferable, and intensity is also higher；The piece beam quantity for being enclosed crossbeam or stringer is preferred It is two, to improve the packaging efficiency of each beam.

Fig. 5-8 is please referred to, Fig. 5 is that the stereochemical structure of first crossbeam in the Rear secondary frame for vehicle of electric car provided by the present invention is shown It is intended to, Fig. 6 is the first partial enlarged view for filling the span of a man's arms mechanism in Fig. 5, and Fig. 7 is the top view of Fig. 6, and Fig. 8 is the front view of Fig. 6.

As shown in figure 5, the Rear secondary frame for vehicle of electric car provided by the present invention, first crossbeam 1 may include the first anter Piece beam 12 after beam 11 and first, the both ends of the first anter beam 11 are dashed forward arc-like sheet 111 before being equipped with first, piece beam 12 after first Both ends can be equipped with the first processus aboralis arc-like sheet 121；Before the first of first anter beam, 11 one end dash forward arc-like sheet 111 with it is corresponding First processus aboralis arc-like sheet 121 can be enclosed first and fill the span of a man's arms mechanism A, for installing first sleeve 5.

First sleeve 5 can specifically be welded in first and fill the span of a man's arms in mechanism A, inside can be used for installing adapter tube, which can First crossbeam 1 is fixed on car body, bushing is also provided between first sleeve 5 and adapter tube, vibration is isolated, improves vehicle Comfort.

Specifically, the above-mentioned first mechanism A that fills the span of a man's arms can fill the span of a man's arms mechanism for arc, or complete circle is filled the span of a man's arms machine Structure, regardless of using the mechanism that fills the span of a man's arms of which kind of form, as long as can guarantee to first sleeve 5 fill the span of a man's arms and first sleeve 5 with First fill the span of a man's arms mechanism A welding after bonding strength.

Found through analysis, first sleeve 5 and first fill the span of a man's arms mechanism A connection structure in actual use, outermost end ( The left and right ends of one crossbeam 1) actually and do not stress, then the first mechanism A that fills the span of a man's arms can preferably have arc jaggy and close Mechanism is embraced, which can be set to the first outer end for filling the span of a man's arms mechanism A, using Fig. 5 as visual angle, that is, be set to first right side for filling the span of a man's arms mechanism A End.

So, on the one hand, the first processing assembling difficulty for filling the span of a man's arms mechanism A can be reduced, on the other hand, additionally it is possible to mitigate the The weight of one crossbeam 1, is conducive to vehicle loss of weight.

It is to be appreciated that in embodiments of the present invention, the first size for filling the span of a man's arms central angle corresponding to mechanism A is not limited, Its corresponding central angle is bigger, i.e., the first weld seam for filling the span of a man's arms between mechanism A and first sleeve 5 is also longer, more advantageously ensures that Connection reliability between the two；Corresponding central angle is smaller, and the first the fill the span of a man's arms processing of mechanism A, installation difficulty is lower, and The weight of one crossbeam 1 is lower；It fills the span of a man's arms mechanism A institute when it is implemented, those skilled in the art can be arranged first according to actual needs The size of corresponding central angle selects the mechanism that fills the span of a man's arms using the arc for being greater than 180 degree alternatively, can also refer to attached drawing 6.

With continued reference to FIG. 5, arc-like sheet 111 of dashing forward before above-mentioned first may include on spaced along the vertical direction first The lower anter 111b of anter 111a and first, the first processus aboralis arc-like sheet 121 may include on spaced along the vertical direction first Piece 121b after piece 121a and first is lower afterwards.

When in use, on first anter 111a can on first after piece 121a match, to the upper end of first sleeve 5 It fills the span of a man's arms, the first lower anter 111b can be matched with the first lower rear piece 121b, be closed to the lower end of first sleeve 5 It embraces.In this way, first fill the span of a man's arms mechanism A can the upper and lower ends portion to first sleeve 5 carry out fixation of filling the span of a man's arms, to guarantee first sleeve 5 Connection reliability.

Using this structure, rear piece 121a and first between the lower anter 111b of anter 111a and first, on first on first Groove a can be formed between piece 121b after lower；Alternatively, it may also be said that dash forward before first arc-like sheet 111, the first processus aboralis arc-like sheet 121 Arc-like sheet 111 of dashing forward before first is divided into anter 111a on first, the first lower anter 111b by groove a set by outer end, will Piece 121a, the first lower rear piece 121b after first processus aboralis arc-like sheet 121 is divided on first.

It is to be understood that the connection structure for filling the span of a man's arms mechanism A and first sleeve 5 for the first of welding assembly, stress is weak Point is commissure, i.e., the weld of arc-like sheet 111 of dashing forward before first, the first processus aboralis arc-like sheet 121 and first sleeve 5, when in use, Car body will focus on commissure to the active force of the connection structure by adapter tube, and weld seam is easy to cause to damage.

And in embodiments of the present invention, the setting of above-mentioned groove a prominent arc-like sheet 111, the first processus aboralis before can reducing by first The integral strength of arc-like sheet 121, when in use, car body will be dispersed to groove a's to the active force of the connection structure by adapter tube On side wall, the stress of commissure can be greatly reduced, to reduce the risk of weld seam damage, be more advantageous to guarantee first and fill the span of a man's arms mechanism The connection reliability of A and first sleeve 5.

As shown in fig. 7, piece beam 12 can have positioning protrusion 122 backwards after first, the front end of the first stringer 3 can be coated In positioning protrusion 122, piece beam 12 after then being fixed on first by modes such as welding.

Again as shown in figure 8, first crossbeam 1 can be equipped with lower protrusion 13, which can be equipped with pacifies in the front-back direction Hole 131 is filled, the second stringer 4 can be plugged in the mounting hole 131, then can be fixed on first crossbeam 1 by modes such as welding.

Specifically, the mounting hole 131 for being set to the first anter beam 11 can have preceding prominent flange b, piece after being set to first The mounting hole 131 of beam 12 can have the flange b of processus aboralis, when the second stringer 4 is plugged in mounting hole 131, can pass through flange b It is welded with the second stringer 4.

It is appreciated that the height of flange b is unsuitable excessively high, to reduce the difficulty of processing of flange b, meanwhile, it also can avoid material The waste of material and interfere caused by other components to be installed；The height of flange b is also unsuitable too low, to avoid welding space The problem of undercut phenomenon caused by deficiency and welding stress concentration cause weld strength to decline.

Specific to the embodiment of the present invention, the height of flange b can be 5-10mm, at this point, welding space is sufficient, welding is strong Degree is higher, and the difficulty of processing of flange b is relatively low, and is not easy to generate interference to other components to be installed.

For first crossbeam 1, since the length of casing 5 is shorter, the first of first crossbeam 1 fills the span of a man's arms mechanism A in above-below direction Size can be smaller, and setting due to lower protrusion 13 and first crossbeam 1 support the intensity of motor to need, first crossbeam 1 The size of intermediate position in above-below direction can be larger.That is, in the up-down direction, the embodiment of the present invention is secondary after providing The first crossbeam 1 of vehicle frame has intermediate variable section structure wide, both ends are thin, reference can be made to Fig. 8.

In this way, can have transition structure between the end (i.e. first fill the span of a man's arms mechanism A) of lower protrusion 13 and first crossbeam 1, The transition structure can be arc relief portion 14, to provide installation space for oscillating arm bracket 8, reference can be made to Fig. 3.

Fig. 9-15 is please referred to, Fig. 9 is the stereochemical structure of second cross beam in the Rear secondary frame for vehicle of electric car provided by the present invention Schematic diagram, Figure 10 are the top view of Fig. 9, and Figure 11 is the second partial enlarged view for filling the span of a man's arms mechanism in Fig. 9, and Figure 12 is of the invention mentioned For the structural schematic diagram of the first stringer of the Rear secondary frame for vehicle of electric car, Figure 13 is the side view of Figure 12, and Figure 14 is second cross beam With the attachment structure schematic diagram of the first stringer, Figure 15 is the second partial enlarged view for filling the span of a man's arms mechanism in Figure 14.

As shown in figure 9, second cross beam 2 provided by the present invention may include piece beam 22 after the second anter beam 21 and second, the The both ends of two anter beams 21 are dashed forward arc-like sheet 211 before being equipped with second, and the both ends of piece beam 22 can be equipped with second after second Processus aboralis arc-like sheet 221；It dashes forward before the second of second anter beam, 21 one end arc-like sheet 211 and corresponding second processus aboralis arc-like sheet, 221 energy It is enough enclosed second to fill the span of a man's arms mechanism B, for installing the second casing 6.

The structure and function of second casing 6 are similar with first sleeve 5, and this will not be repeated here, pass through first sleeve 5, First crossbeam 1, second cross beam 2 can be fixed on car body, and then realize entire Rear secondary frame for vehicle by set adapter tube in two casings 6 Installation with car body is fixed.

As shown in Figure 10, second cross beam 2 can have recessed portion 212 backwards, and the rear end of the first stringer 3 can be coated on recessed Concave portion 212, the recessed portion 212 can be specifically recessed backward by piece beam 22 after the second anter beam 21, second and be formed, then can passed through The second anter beam 21 is fixed in the rear end of first stringer 3 by the modes such as welding, reference can be made to Figure 14.Alternatively, second cross beam 2 can also be with The protruding portion to match is set and the first stringer 3 cooperates, the rear end of the first stringer 3 can be equally fixed.Specific real Shi Shi, those skilled in the art can be according to concrete conditions such as actual installation environment to the cooperation knot of second cross beam 2 and the first stringer 3 Structure is selected.

Similar with first crossbeam 1, second cross beam 2 can also be equipped with lower protrusion 13, which can be equipped with installation Hole 131, so that the second stringer 4 passes through, and the mounting hole 131 for being set to the second anter beam 21 has flange b facing forward, is set to second The mounting hole 131 of piece beam 22 can have flange b backwards afterwards.

The second mechanism B that fills the span of a man's arms can fill the span of a man's arms that mechanism A is consistent, and there may also be certain differences with first, please specifically join Figure 11 is examined, arc-like sheet 211 of dashing forward before second may include anter 211a on second, and the second processus aboralis arc-like sheet 221 may include along upper Piece 221b after piece 221a and second is lower after on lower direction spaced second, on second anter 211a can with second on after piece 221a is matched, and is filled the span of a man's arms with the upper end to the second casing 6, and second it is lower after piece 221b then can under the second casing 6 End is connected.

It could be aware that, the second mechanism B that fills the span of a man's arms fills the span of a man's arms mechanism A compared to first, and difference is, set on second cross beam 2 Second fill the span of a man's arms mechanism B only include anter, it is upper after piece and it is lower after piece, not set anter lower accordingly.

Groove a can be formed between piece 221b after piece 221a and second is lower after on second, the structure and function of groove a with The first groove a that fills the span of a man's arms in mechanism A is similar, can also play the second casing 6 of dispersion and second and fill the span of a man's arms the commissure mechanism B stress Effect.

As shown in Figure 12 and Figure 13, the first stringer 3 may include the first upper piece beam 31 and the first bottom sheet beam 32, and entirety can The fork configuration that both ends are big, centre is small is formed, i.e. the sectional dimension in 3 rear and front end portion of the first stringer is greater than the section ruler at middle part Very little, the rear end of the first bottom sheet beam 32 can be equipped with lower arc portion 321.

For another example shown in Figure 14, Figure 15, when the first stringer 3 is in coated state with recessed portion 212, above-mentioned lower arc portion 321 The second lower rear piece 221b can be cooperated to coat the lower end of the second casing 6, that is to say, that the lower arc portion 321 and second Upper anter 211a, on second after piece 221a, second it is lower after piece 221b common combination form above-mentioned second and fill the span of a man's arms mechanism B.

As previously mentioned, the first stringer 3 can be coated on the recessed portion 212 of second cross beam 2, it could be aware that, in the first stringer 3 With the cladding junction of second cross beam 2, the first stringer 3 has bigger size in the up-down direction.In this way, when using lower arc portion When piece 221b fills the span of a man's arms to the second casing 6 after 321 cooperations second are lower, anter 211a is in upper and lower in lower arc portion 321 and second To can have bigger size, that is to say, that using the second of this structure fill the span of a man's arms mechanism B fill the span of a man's arms the length of the second casing 6 can With longer, it is more advantageous to the connection reliability for guaranteeing the second casing 6.

The rear end of first upper piece beam 31 is also provided with arc portion 311, and upper arc portion 311 is oppositely arranged with lower arc portion 321, and Upper arc portion 311 can be coated on anter 211a on second.When upper arc portion 311 is coated on anter 211a on second, on avoiding Arc portion 311 causes to interfere to the installation of the second casing 6, and anter 211a can protrude from the installation of arc portion 311 on second, i.e., upper arc The inner wall of anter 211a can have evacuation gap X on the inner wall in portion 311 and second；In other words, when the second casing 6 is installed on Second fill the span of a man's arms mechanism B when, can have between upper arc portion 311 and the outer wall of the second casing 6 evacuation gap X.

It is appreciated that above-mentioned evacuation gap X should have enough sizes, so that anter in upper arc portion 311, second Weld seam on weld seam and second between 211a between anter 211a, the second casing 6 is mutually independent of each other.

Above-mentioned evacuation gap X can also be not present, i.e., upper arc portion 311 can with second on anter 211a align, alternatively, Upper arc portion 311 can protrude from anter 211a on second, at this point, second fill the span of a man's arms mechanism B then can be by upper arc portion 311, lower arc portion 321, on second after piece 221a and second it is lower after piece 221b composition.But it should knowing, when upper arc portion 311 protrudes from anter on second When 211a, the weld seam in upper arc portion 311 and second between anter 211a will be coated on the inside of the first stringer 3, and welding is relatively not Just.

In conjunction with above content it is found that the embodiment of the present invention actually discloses two kinds of mechanisms that fill the span of a man's arms, a kind of end by crossbeam Portion independently forms, and fills the span of a man's arms mechanism A applied to first, and another kind is cooperatively formed by crossbeam and the first stringer 3, fills the span of a man's arms applied to second Mechanism B.When specifically used, the first fill the span of a man's arms mechanism A, second mechanism B that fills the span of a man's arms can be configured according to foregoing description；It can also be with It is used interchangeably, the first mechanism A that fills the span of a man's arms is cooperatively formed by first crossbeam 1 and the first stringer 3, and second fills the span of a man's arms mechanism B by Two crossbeams 2 independently form；First fill the span of a man's arms mechanism A, second fill the span of a man's arms mechanism B can also be using identical structure, i.e., by corresponding cross The end of beam independently forms, or is cooperatively formed by respective girders and the first stringer 3.

Figure 16 is please referred to, Figure 16 is the structural representation of the second stringer of the Rear secondary frame for vehicle of electric car provided by the present invention Figure.

As shown in figure 16, in Rear secondary frame for vehicle provided by the present invention, the second stringer 4 is plugged in first crossbeam 1, second cross beam 2 Mounting hole 131 part, peripheral wall can be equipped with flow-guiding mouth 41.

It is arranged such, on the one hand, Rear secondary frame for vehicle can carry out leakage by the deflector hole 41, so that oily in Electrophoresis paint Paint more can promptly be full of the inner wall of each beam of Rear secondary frame for vehicle, realize quickly paint；On the other hand, additionally it is possible to it is vertical to reduce by second The weight of beam 4 is conducive to vehicle loss of weight.

Referring again to Fig. 1, the Rear secondary frame for vehicle of electric car provided by the present invention, first crossbeam 1, second cross beam 2 with Be mating between first stringer 3, the second stringer 4, in this way, Rear secondary frame for vehicle is during installation, can only operate first crossbeam 1, Second cross beam 2 is plugged in the first stringer 3 along the longitudinal direction, the second stringer 4 is assembled.

The present invention also provides a kind of electric cars, the rear secondary vehicle including electric car involved in the respective embodiments described above Frame.

Since above-mentioned Rear secondary frame for vehicle has had technical effect as above, then, the electric car with the Rear secondary frame for vehicle is also When having similar technical effect, this will not be repeated here.

The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as Protection scope of the present invention.

Claims (15)

1. a kind of Rear secondary frame for vehicle of electric car, including the spaced first crossbeam of front-rear direction (1), second cross beam (2), two The first stringer (3), the second stringer (4) are connected between person, first stringer (3) is located at the top of second stringer (4), First stringer (3) includes the first left stringer, the first right vertical beam, and second stringer (4) includes the second left stringer, second right side Stringer, which is characterized in that

At least one in the first crossbeam (1), the second cross beam (2), first stringer (3) and second stringer (4) If person is the non-uniform beam being enclosed by dry plate beam, each described beam is the not closed plate structure in section.

2. the Rear secondary frame for vehicle of electric car according to claim 1, which is characterized in that the first crossbeam (1) includes first Arc-like sheet (111) are dashed forward before being equipped with first in piece beam (12) after anter beam (11), first, the both ends of the first anter beam (11), The both ends of piece beam (12) are equipped with the first processus aboralis arc-like sheet (121) after described first；

Prominent arc-like sheet (111) can be enclosed the first conjunction with the corresponding first processus aboralis arc-like sheet (121) before described first It embraces mechanism (A), for installing first sleeve (5).

3. the Rear secondary frame for vehicle of electric car according to claim 2, which is characterized in that dash forward arc-like sheet (111) before described first Including anter (111a), first lower anter (111b) on spaced first, between the first processus aboralis arc-like sheet (121) includes Piece (121a), the first lower rear piece (121b) after on the first of setting；

On described first between anter (111a) and first lower anter (111b), on described first after piece (121a) with it is described Groove (a) is formed between first lower rear piece (121b).

4. the Rear secondary frame for vehicle of electric car according to claim 2, which is characterized in that piece beam (12) has court after described first The front end of positioning protrusion (122) afterwards, first stringer (3) can be coated on the positioning protrusion (122).

5. according to the Rear secondary frame for vehicle of electric car described in any one of claim 2-4, which is characterized in that the second cross beam (2) including piece beam (22) after the second anter beam (21), second, the both ends of the second anter beam (21) prominent arc before being equipped with second Shape piece (211), the both ends of piece beam (22) are equipped with the second processus aboralis arc-like sheet (221) after described second；

Prominent arc-like sheet (211) can be enclosed the second conjunction with the corresponding second processus aboralis arc-like sheet (221) before described second It embraces mechanism (B), for installing the second casing (6).

6. the Rear secondary frame for vehicle of electric car according to claim 5, which is characterized in that the second cross beam (2) has backwards Recessed portion (212), the rear end of first stringer (3) can be coated on the recessed portion (212).

7. the back panel vehicle frame of electric car according to claim 6, which is characterized in that dash forward arc-like sheet (211) before described second Including anter (211a) on second, the second processus aboralis arc-like sheet (221) include on spaced second after piece (221a), the Two it is lower after pieces (221b), on described second after piece (221a) and it is described second it is lower after formation groove (a) between piece (221b)；

First stringer (3) includes the first upper piece beam (31) and the first bottom sheet beam (32), after the first bottom sheet beam (32) End is equipped with lower arc portion (321), and described second mechanism (B) that fills the span of a man's arms further includes the lower arc portion (321)；

When first stringer (3) and the recessed portion (212) are in coated state, on described second anter (211a) with it is described Piece (221a) is filled the span of a man's arms the upper end of second casing (6) after on second, described second it is lower after piece (221b), the lower arc portion (321) it fills the span of a man's arms the lower end of second casing (6).

8. the Rear secondary frame for vehicle of electric car according to claim 7, which is characterized in that the rear end of described first upper piece beam (31) It is additionally provided with arc portion (311), the upper arc portion (311) is oppositely arranged with the lower arc portion (321), and the upper arc portion (311) Anter (211a) on described second can be coated on；

Second casing (6) be installed on described second fill the span of a man's arms mechanism (B) when, the upper arc portion (311) and second casing (6) there is evacuation gap (X) between outer wall.

9. the Rear secondary frame for vehicle of electric car according to claim 7, which is characterized in that the first stringer (3) rear and front end The sectional dimension in portion is greater than the sectional dimension in the middle part of it.

10. the Rear secondary frame for vehicle of electric car according to claim 5, which is characterized in that the first crossbeam (1), described Two crossbeams (2) are equipped with lower protrusion (13), and the lower protrusion (13) is equipped with mounting hole (131) in the front-back direction, and described second is vertical Beam (4) is plugged in the mounting hole (131) of the first crossbeam (1), the second cross beam (2).

11. the Rear secondary frame for vehicle of electric car according to claim 10, which is characterized in that be set to the first anter beam (11), the mounting hole (131) of the second anter beam (21) have preceding prominent flange (b), be set to described first after piece beam (12), The mounting hole (131) of piece beam (22) has the flange (b) of processus aboralis after described second, and the height of the flange (b) is 5-10mm.

12. the Rear secondary frame for vehicle of electric car according to claim 10, which is characterized in that second stringer (4) is plugged in The part of the mounting hole (131), peripheral wall are equipped with flow-guiding mouth (41).

13. the Rear secondary frame for vehicle of electric car according to claim 10, which is characterized in that be set to the first crossbeam (1) There are arc relief portion (14) between lower protrusion (13) and the end of the first crossbeam (1)；The end of the first crossbeam (1) Size in above-below direction is less than other positions.

14. the Rear secondary frame for vehicle of electric car according to claim 5, which is characterized in that described first fills the span of a man's arms mechanism (A), institute Stating second mechanism (B) that fills the span of a man's arms is to fill the span of a man's arms mechanism greater than the arc of 180 degree.

15. a kind of electric car, including Rear secondary frame for vehicle, which is characterized in that the Rear secondary frame for vehicle is any in claim 1-14 The Rear secondary frame for vehicle of electric car described in.