CN1765678A - Car body lower structure - Google Patents

Car body lower structure Download PDF

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Publication number
CN1765678A
CN1765678A CN 200510114098 CN200510114098A CN1765678A CN 1765678 A CN1765678 A CN 1765678A CN 200510114098 CN200510114098 CN 200510114098 CN 200510114098 A CN200510114098 A CN 200510114098A CN 1765678 A CN1765678 A CN 1765678A
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CN
China
Prior art keywords
extension
vehicle
mentioned
engagement section
frame part
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Granted
Application number
CN 200510114098
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Chinese (zh)
Other versions
CN100513242C (en
Inventor
坂本守一
安藤裕之
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.)
Mazda Motor Corp
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Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Publication of CN1765678A publication Critical patent/CN1765678A/en
Application granted granted Critical
Publication of CN100513242C publication Critical patent/CN100513242C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

To provide a lower body structure for a vehicle not deteriorate assembling property of a sub-frame while enhancing mounting rigidity of a tie down engagement part. The sub-frame 8 is fastened/fixed through a connection bracket 9 joined to a lower surface of a rear side frame 3. Then, an extension part 95 extending from a body part 91 to a front side of the vehicle is formed on the connection bracket 9 and the tie down engagement part 2 or the like is fastened/fixed to the extension part 95.

Description

The bottom section of body of vehicle
Technical field
The present invention relates to a kind of bottom section of body of vehicle, especially be provided with the automobile body bottom section of the engagement section that fastens hook.
Background technology
,, be provided with when transporting vehicle in the past, fixed the engagement section that fastens hook (fastening the engagement section) of this vehicle to call in the following text by trailer or railway truck etc. at the body bottom section of vehicle.
For example, in patent documentation 1 (Japanese Patent open communique 2003-40141 number), disclose a kind of with front side member and auxiliary vehicle frame bonded assembly link on the bottom section of body that fastens the engagement section is set.
But,, must possess higher installation rigidity to a certain extent so this fastens the engagement section owing to when fastening, there is bigger load to act on above-mentioned fastening on the engagement section.
As described in above-mentioned patent documentation 1, the link of auxiliary vehicle frame is provided with when fastening the engagement section, can not fully guarantee the above-mentioned installation rigidity that fastens the engagement section, might deform so fasten engagement section or link etc.
Therefore, in order to ensure higher installation rigidity, list only is fastened on the link fastening the engagement section, it is also conceivable that its connection is fastened on along on the longeron of vehicle fore-and-aft direction extension.
But, when fastening the engagement section and being fixed on link and the longeron, also can produce new problem.
In the time will assisting vehicle frame to be installed on the vehicle body, owing to being arranged at fastening the engagement section and can form to hinder and make the installation exercise mis-behave on the link.
Promptly, auxiliary vehicle frame is secured on the longeron through link from the below of vehicle, also be fixed on link and the longeron but fasten the engagement section, and outstanding, can produce with auxiliary vehicle frame etc. and interfere so when under-vehicle one side is installed auxiliary vehicle frame, fasten the engagement section to the below of vehicle.
Summary of the invention
The objective of the invention is for a kind of bottom section of body of vehicle is provided, when raising fastens the installation rigidity of engagement section, can not make the installation exercise mis-behave of auxiliary vehicle frame.
Automobile body bottom section of the present invention, has the frame part that extends along the vehicle fore-and-aft direction, and be positioned at this frame part the below, assist vehicle frame with this frame part at a distance of certain distance and by the link and this workshop parts bonded assembly that engage with this frame part, above-mentioned link can be formed with than the connecting portion of auxiliary vehicle frame more to the extension of vehicle front or rear extension, this extension can be provided with the engagement section that fastens that is used for fixing vehicle, and this fastens the engagement section and can tighten together with above-mentioned link and frame part.
Adopt said structure, owing on link, be formed with than the connecting portion of auxiliary vehicle frame more to the extension of vehicle front or rear extension, on this extension, be provided for the engagement section that fastens of fixed vehicle, and make and fasten engagement section and link and frame part and tighten together, therefore, fasten the engagement section, extension at link, not only be fixed on the link, but also be fixed on the frame part, also be fixed on connecting portion than auxiliary vehicle frame in addition and more be positioned on the position of the place ahead of vehicle or rear one side.
Promptly, fasten the engagement section by on the extension of link, being provided with, be fixed on lessly and be positioned on the position of the vehicle front of connecting portion of auxiliary vehicle frame or rear one side with fastening the engagement section, can make it to be fastened on link and the frame part simultaneously the installation exercise influence of auxiliary vehicle frame.
In addition, about the shape of the extension of link, so long as the shape that stretches along frame part does not have specific limitation.
In addition, the direction that stretches of extension is no matter be the place ahead or the rear of vehicle, and any one party can adopt, and preferably adopts under the state that auxiliary vehicle frame is installed, can be to the direction of the side extension of not assisting vehicle frame.Because the operator is being incorporated into when fastening the engagement section fastening dogging, auxiliary vehicle frame can make that engaging is easier to be carried out.
In addition, do not have specific limitation yet, can adopt the structure that on flat board member, wears connecting hole, ring-type connecting hole structure that forms by bar or the like fastening the engagement section.
In said structure, an end also can be set be connected with the extension of above-mentioned link, the other end along the bearing of trend of this extension extend and with above-mentioned frame part bonded assembly extension component.
Adopt said structure, because being provided with an end is connected with the extension of link, the other end along the bearing of trend of this extension extend and with frame part bonded assembly extension component, so the extension of link can be connected by extension component with frame part.Therefore, the extension of link just is extended parts and is connected on the frame part securely.Thus, the installation rigidity of link extension is improved, even born from the bigger load that fastens the engagement section, extension can not be out of shape yet, and can bear fastens load infalliblely.
In said structure, side's one side can be provided with fuel tank in the overall width direction of above-mentioned frame part, and above-mentioned extension component can be provided with the protrusion more outstanding than the fuel tank bottom.
Adopt said structure, because extension component is provided with the protrusion more outstanding than the fuel tank bottom, extension component just produces butt (interference) etc. with the road surface earlier than fuel tank.Therefore, extension component can have the function of guard block as the protection fuel tank concurrently, so with regard to the unnecessary vehicle ' employed guard block when the abominable road surface that is arranged in addition.
In said structure, above-mentioned extension can be equipped with the draft hitch of wheel.
Adopt said structure, can be on the extension of reinforcing by extension component, the draft hitch (for example suspension arm etc.) of wheel is installed.Therefore, the installation rigidity that the strengthening part that draft hitch is installed just can improve draft hitch need not be set in addition.
In said structure, the trailing arm of the vehicle fore-and-aft direction position of regulation wheel can be installed in an end of the overall width direction of above-mentioned extension in the above-mentioned draft hitch, above-mentionedly fasten the other end that the engagement section can be arranged on the overall width direction of above-mentioned extension, an end of above-mentioned extension component can engage with the overall width direction central part of above-mentioned extension.
Adopt said structure, because trailing arm is installed in an end of the overall width direction of extension, fasten the other end that the engagement section is arranged on the overall width direction of extension, one end of extension component engages with the overall width direction central part of extension, so put on the active position of the load of extension, divided to the both ends of the overall width direction of extension, thereby the overall width direction central part of extension is firmly fastened to.
Like this, can bring into play the function that improves the installation rigidity of extension by extension component efficiently.Promptly, by extension component being bonded on the overall width direction central part of extension, at load from the fore-and-aft direction of the trailing arm that is positioned at overall width direction one end, and, can both bring into play the function that improves the installation rigidity of extension by extension component effectively from the load that fastens hook that is positioned at the overall width direction other end.
Therefore, even on extension, exist trailing arm and a plurality of loads such as fastening the engagement section to go into the force, also can improve the installation rigidity effectively by extension component.
Adopt the present invention, fasten the engagement section by on the extension of link, being provided with, can be fixed on lessly and be positioned on the position of the vehicle front of connecting portion of auxiliary vehicle frame or rear one side with fastening the engagement section, can make it to be fastened on link and the frame part simultaneously the installation exercise influence of auxiliary vehicle frame.
Therefore, by the bottom section of body of above-mentioned vehicle, when raising fastens the installation rigidity of engagement section, can not make the installation exercise mis-behave of auxiliary vehicle frame.
Description of drawings
Fig. 1 is the unitary side view of vehicle when fastening state of expression present embodiment.
Fig. 2 is the schematic bottom view of bottom section of body of the vehicle of present embodiment.
Fig. 3 connects support and near bottom surface detailed maps thereof.
Fig. 4 connects support and near detailed side view thereof.
Fig. 5 is the cutaway view of A-A line among Fig. 3.
Fig. 6 is the mode charts of each parts of explanation with respect to the effect that restraint location produced of extension.
The specific embodiment
Below, with reference to accompanying drawing in detail embodiments of the present invention are described in detail.
At first, by Fig. 1, Fig. 2 is illustrated the bottom section of body of the vehicle of present embodiment.Fig. 1 is the unitary side view of expression vehicle when fastening state, and Fig. 2 is the schematic bottom view of the bottom section of body of vehicle.
As shown in Figure 1, the vehicle V of present embodiment is light cargo cab (pick up track), has the goods platform at the rear portion of vehicle.
The central part rear of this vehicle V bottom is provided with the fuel tank 1 that charges.Rear view of vehicle one side of this fuel tank 1, be provided with when transporting vehicle V be used for fixing this vehicle V fasten that hook H fastens fasten engagement section 2.
When transporting vehicle V, be stuck close in and fasten in the engagement section 2 owing to fasten hook H, so fasten belt T at vehicle V with transport between the means C fastened.By above-mentioned fastening, fasten belt T and will apply the bigger load that fastens fastening engagement section 2.
As shown in Figure 2, the bottom section of body of present embodiment, have a pair of floor side member 3 that extends along the vehicle fore-and-aft direction, 3, the following longeron 4 that a pair of outside the vertical fine strain of millet in back, the fore-and-aft direction in the central part (left side of accompanying drawing) of vehicle along vehicle extend, 4, and a plurality of torsion boxs 5 that between floor side member 3 and following longeron 4, extend along the overall width direction etc.In addition, between above-mentioned floor side member 3,3, above-mentioned fuel tank 1 is provided with in the mode that its length direction is positioned at the overall width direction.
This fuel tank 1, its each bight are fastened on the longeron 3,3, thereby are firmly fixed with respect to vehicle body.In addition, be positioned at the overall width direction central part of fuel tank 1, having the fender 6 of Rack, crossing over along the vehicle fore-and-aft direction and be set in place on fuel tank 1 front-back direction in the overall width direction.
In the both sides of fuel tank 1, be provided with protection thick stick 7,7 at vehicle ' time protection fuel tank 1 in abominable road surface.This protects thick stick 7,7, is made of columniform tubing, in order to protect the sidepiece of fuel tank 1, extends to the vehicle fore-and-aft direction along fuel tank 1.
In addition, this protects thick stick 7, and the flange part 71,72 by being arranged on its front end and rear end is fastened on the floor side member 3, thereby is firmly fixed with respect to vehicle body.
In rear view of vehicle one side of fuel tank 1, be provided with the auxiliary vehicle frame 8 (part that surrounds with long and short dash line among Fig. 2) of the draft hitch etc. of supporting wheels (not shown).
Should auxiliary vehicle frame 8, be positioned at the below of floor side member 3,3, and be erected between this floor side member 8,3, the fixed part of its front end etc., the connection support 9,9 that engages by bottom surface and being fastened on the floor side member 3,3 with floor side member 3,3.
As mentioned above, the above-mentioned engagement section 2,2 that fastens is arranged on the position of rear view of vehicle one side of fuel tank 1, is fastened on the floor side member 3,3 by above-mentioned connection support 9,9.
About above-mentioned connection support 9 and the detailed structure that fastens engagement section 2 etc. are illustrated by Fig. 3-Fig. 5.Fig. 3 connects support 9 and near bottom surface detailed maps thereof, and Fig. 4 connects support and near detailed side view thereof, and Fig. 5 is the cutaway view of A-A line among Fig. 3.
The connection support 9 of present embodiment is arranged on the floor side member 3 that the position more relies on rear view of vehicle that is provided with than following longeron 4, on, with the following side engagement to the joggling part 3a of vehicle top bending of this floor side member 3.
This connects support 9, and its main part 91 is made of the bracket component that is コ shape section that extends along the vehicle fore-and-aft direction.Downside at main part 91 is formed with the protuberance stage portion 92 of bearing the upper end of assisting vehicle frame 8, and the central part of this protuberance stage portion 92 is formed with the nut through hole 93 as the connecting portion of auxiliary vehicle frame 8.In addition, the two sides of main part 91 are provided with the junction surface 94,94 with the side firm engagement of floor side member 3.
In addition, connect on the support 9, be formed with the extension 95 that extends to vehicle front from main part 91 at this.This extension 95 also is コ shape section and extends along the vehicle fore-and-aft direction, and engages with the two sides and the bottom surface of floor side member 3 respectively.
Above-mentioned engagement section 2 grades that fasten are fastened on this extension 95.That is, as shown in Figure 5, fasten engagement section 2, be fastened on the side of overall width direction inboard of extension 95, the mounting flange portion 81 of the rear end flange part 72 of protection thick stick 7 and the trailing arm 82 of draft hitch is fastened on the bottom surface of extension 95.
The above-mentioned engagement section 2 that fastens by flat component set-up, is formed with at its underpart central part and is used to engage the long hole shape connecting hole 21 that fastens hook H.
In addition, fasten engagement section 2 self rigidity by forming joggling part 22,22 at two end edge portions of the vehicle fore-and-aft direction that fastens engagement section 2, can improving.
In addition,, be formed with three through holes 23 (with reference to Fig. 5) that constitute equilateral triangle on the top that fastens engagement section 2, by three fastening nuts 24,, infallible and be firmly fastened to together fastening engagement section 2 and floor side member 3 and being connected support 9.
As mentioned above, when fastening vehicle, fasten hook H and fasten engagement section 2 and engage, so having the bigger load that fastens acts on and fastens on the engagement section 2, but by fastening engagement section 2 with floor side member 3 and be connected support 9 and tighten together, can improve the installation rigidity that fastens engagement section 2, the possibility of damaged distortion also just disappears thereupon.
In addition,, when assisting the installation exercise of vehicle frame 8, fasten engagement section 2 and just can not form obstruction, also can not make the installation exercise mis-behave installation exercise because the above-mentioned position that tightens together is positioned on the extension 95 that vehicle front extends.
In addition, because this extension 95, to extending with the direction that the opposite side in position (rear view of vehicle position) (vehicle front position) is set of auxiliary vehicle frame 8, so when the operator will fasten hook H and fasten engagement section 2 and engage, auxiliary vehicle frame 8 can not become obstruction, thereby can improve the operating characteristic of engaging operation.
Above-mentioned protection thick stick 7, by the flange 71,72 that is positioned at its front-end and back-end, and to outstanding tubulose protrusion 73 formations of under-vehicle.
Wherein, protrusion 73 is set to more outstanding to vehicle lower side than the bottom 1a (with reference to Fig. 4) of fuel tank 1 to the outstanding overhang of under-vehicle.Protrusion 73 adopts above-mentioned setting, can during in abominable road surface etc., make protection thick stick 7 produce butt (interference) etc. with the road surface earlier than fuel tank 1, thereby can protect fuel tank in vehicle '.
In addition, because the rear end flange part 72 of protection thick stick 7 is fastened on the extension 95 that connects support 9, front end boss portion 71 is fastened on the floor side member 3, so can improve the installation rigidity of extension 95.Particularly protect thick stick 7 to extend and be provided with, can improve the installation rigidity of the vehicle fore-and-aft direction of extension 95 thus along the vehicle fore-and-aft direction.
Like this, extension 95 can engage securely with floor side member 3 by protection thick stick 7, thereby can improve the installation rigidity.Therefore, even be subjected to from the bigger load that fastens that fastens engagement section 2, extension 95 can not produce damaged distortion etc. yet, fastens load thereby can bear infalliblely.
In addition, above-mentioned utilization (dual-purpose) protection thick stick 7 is used as improving the structure that rigid parts is installed, and need not each parts are set respectively, thereby cost-cutting effectively reduces arrangement space.
The trailing arm 82 of draft hitch (ring of representing with long and short dash line) extends along the vehicle fore-and-aft direction, is the annular element that is used to limit the vehicle fore-and-aft direction position of trailing wheel.Therefore, in the mounting flange portion 81 of above-mentioned trailing arm 82, can import bigger vehicle fore-and-aft direction suspension load.
But, as mentioned above,,, and can bear above-mentioned suspension load so the installation rigidity is higher because this mounting flange portion 81 is fastened to by protecting thick stick 7 to give on the firm bonded assembly extension 95 infalliblely.Particularly this mounting flange portion 81 is fastened on the extension 95 that connects support 9, so need not to be provided with in addition the installation rigidity that strengthening part just can improve draft hitch.
As mentioned above, can obtain various effects by various parts being fastened on the extension 95 that connects support 9.In addition, the position relation from each parts after fastened also has following effect.
Fig. 6 is the mode charts of each parts of explanation with respect to the effect that restraint location produced of extension 95.Here, each inscape is used symbol same as described above, and explanation is omitted.
As shown in Figure 6; the rear end flange part 72 of protection thick stick 7; be fastened to the overall width direction central part of the extension 95 that connects support 9; the mounting flange portion 81 of trailing arm 82; be fastened to overall width direction foreign side one side of extension 95; in addition, fasten on the overall width direction inner side end that engagement section 2 is fastened to extension 95.
Promptly; the installation rigid protecting thick stick 7 that improves extension 95 is fastened to the central part of extension 95; to the flange part 81 of the trailing arm 82 of extension 95 input load and fasten engagement section 2, fastening at the overall width direction foreign side of extension 95 and Nei Fang and extension 95 respectively.
By above-mentioned fastening,, can both bring into play the function that improves the installation rigidity of extensions 95 by protection thick stick 7 effectively at from trailing arm 82 or fasten the load of hook H any one party.
Particularly at from trailing arm 82 along the load of vehicle fore-and-aft direction and from fasten hook H along vehicle fore-and-aft direction load (in addition; also have load generation effect from fastening hook H along the overall width direction; but fasten on the side that engagement section 2 is fastened to extension 95; so above-mentioned load along the overall width direction is just born by the side of floor side member 3); because protection thick stick 7 extends along the vehicle fore-and-aft direction; so improved the installation rigidity along the vehicle fore-and-aft direction of extension 95, can suitably improve the installation rigidity of extension 95 thus.
In addition; if will protect thick stick 7 to be fastened on an end of the overall width direction of extension 95; the mounting flange portion 81 that fastens engagement section 2 and trailing arm 82 all is fastened on the other end of the overall width direction of extension 95; because bigger load is always imported into from an end of fastening protection thick stick 7; so the burden of protection thick stick 7 will increase; thereby in order to ensure the installation rigidity identical, need further to improve fastening force, then can't improve the installation rigidity of extension 95 thus efficiently with present embodiment.
So, in the present embodiment,, can guarantee the installation rigidity of extension 95 effectively by on the restraint location relation of each parts, working hard.
But,,, still can obtain effect same as described above even trailing arm and the restraint location that fastens the engagement section are exchanged in above-mentioned position relation.
As mentioned above, in the present embodiment, connect support 9 and be provided with the extension 95 that extends to vehicle front, fasten engagement section 2 and be fastened on this extension 95, but also can adopt the extension that extends and when assisting the installation exercise of vehicle frame 8, do not form obstruction along floor side member 3 to rear view of vehicle.
In addition, the shape of extension 95 also can adopt L shape section or tabular except コ shape section.
In addition, with fasten that hook H engages fasten engagement section 2, there is no particular limitation, except that adopting plate-shaped member, also can adopt by bar-like member to constitute endless member.
In addition, in the present embodiment, be that the floor side member 3 at vehicle rear describes, be arranged at the fastening engagement section 2 and connect support 9 etc. of front side member of front part of vehicle certainly, the present invention can be suitable for.
The present invention is not the structure that is confined to above-mentioned embodiment, and it comprises all embodiments that are applicable to the automobile body bottom section.

Claims (5)

1. the bottom section of body of a vehicle is characterized in that:
Have the frame part that extends along the vehicle fore-and-aft direction, and be positioned at the below of this frame part, distance and link and this frame part bonded assembly auxiliary vehicle frame by with this frame part engage certain apart with this frame part,
Above-mentioned link is formed with connecting portion than auxiliary vehicle frame more to the place ahead of vehicle or the extension of rear extension,
This extension is provided with the engagement section that fastens that is used for fixing vehicle,
This fastens the engagement section, tightens together with above-mentioned link and frame part.
2. according to the described automobile body bottom section of claim 1, it is characterized in that:
Also be provided with extension component, the one end is connected with the extension of above-mentioned link, and the other end extends and is connected with above-mentioned frame part along the bearing of trend of this extension.
3. according to the described automobile body bottom section of claim 2, it is characterized in that:
Side's one side is provided with fuel tank in the overall width direction of above-mentioned frame part,
Above-mentioned extension component is provided with the protrusion more outstanding than the fuel tank bottom.
4. according to claim 2 or 3 described automobile body bottom sections, it is characterized in that:
Above-mentioned extension is equipped with the draft hitch of wheel.
5. according to the described automobile body bottom section of claim 4, it is characterized in that:
Stipulate the trailing arm of the vehicle fore-and-aft direction position of wheel in the above-mentioned draft hitch, be installed in an end of the overall width direction of above-mentioned extension,
The above-mentioned engagement section that fastens is arranged on the other end of the overall width direction of above-mentioned extension,
One end of above-mentioned extension component engages with the overall width direction central part of above-mentioned extension.
CNB2005101140984A 2004-10-26 2005-10-21 Car body lower structure Expired - Fee Related CN100513242C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004310798 2004-10-26
JP2004310798A JP4506406B2 (en) 2004-10-26 2004-10-26 Lower body structure of the vehicle

Publications (2)

Publication Number Publication Date
CN1765678A true CN1765678A (en) 2006-05-03
CN100513242C CN100513242C (en) 2009-07-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005101140984A Expired - Fee Related CN100513242C (en) 2004-10-26 2005-10-21 Car body lower structure

Country Status (2)

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JP (1) JP4506406B2 (en)
CN (1) CN100513242C (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN107128372A (en) * 2016-02-29 2017-09-05 本田技研工业株式会社 Automotive body structure

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JP4729970B2 (en) * 2005-05-09 2011-07-20 スズキ株式会社 Structure of engagement part of fastener
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JP6520569B2 (en) * 2015-08-25 2019-05-29 トヨタ自動車株式会社 Vehicle frame structure
CN110723212A (en) * 2019-10-17 2020-01-24 重庆长安汽车股份有限公司 Preceding sub vehicle frame aluminum alloy installing support and vehicle

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CN107128372B (en) * 2016-02-29 2019-05-21 本田技研工业株式会社 Automotive body structure

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JP4506406B2 (en) 2010-07-21
JP2006123585A (en) 2006-05-18
CN100513242C (en) 2009-07-15

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Granted publication date: 20090715

Termination date: 20191021