JPS6318554B2 - - Google Patents
Info
- Publication number
- JPS6318554B2 JPS6318554B2 JP15657883A JP15657883A JPS6318554B2 JP S6318554 B2 JPS6318554 B2 JP S6318554B2 JP 15657883 A JP15657883 A JP 15657883A JP 15657883 A JP15657883 A JP 15657883A JP S6318554 B2 JPS6318554 B2 JP S6318554B2
- Authority
- JP
- Japan
- Prior art keywords
- cross member
- floor panel
- floor
- center
- suspension
- 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.)
- Expired
Links
- 239000000725 suspension Substances 0.000 claims description 18
- 230000000630 rising effect Effects 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0815—Acoustic or thermal insulation of passenger compartments
- B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、サスペンシヨン取付ブラケツトが固
設されたクロスメンバをフロアパネルに結合した
部位近傍における自動車車体のフロア構造に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floor structure of an automobile body in the vicinity of a portion where a cross member to which a suspension mounting bracket is fixedly attached is connected to a floor panel.
「従来技術」
従来の自動車車体のフロア構造としては、日産
自動車株式会社が昭和56年10月に発行したニツサ
ンサニーＥ―B11型、Ｅ―HB11型、Ｅ―WB11
型、Ｅ―WHB11型整備要領書の168頁〜169頁に
記載されているように、例えば第１図に示すよう
なものがある。"Prior art" Conventional car body floor structures include the Nissan Sunny E-B11 model, E-HB11 model, and E-WB11 model published by Nissan Motor Co., Ltd. in October 1981.
As described on pages 168 to 169 of the E-WHB11 maintenance manual, there is, for example, the type shown in Figure 1.
すなわち、自動車のフロア１はセンタフロアパ
ネル２の後にリヤフロアパネル３が接続し、セン
タフロアパネル２の後端部に立上り部２１が形成
され、この立上り部２１にリヤフロアパネル３が
接続されており、センタフロアパネル２の両側に
はサイドシル４，４が固設され、センタフロアパ
ネル２の立上り部２１にはクロスメンバ５が車体
横方向に固設され、テンシヨンロツドやトレーリ
ングアーム等のサスペンシヨン部材を取り付ける
ためのサスペンシヨン取付ブラケツト６，６…が
このクロスメンバ５に固設されている。また立上
り部２１からリヤフロアパネル３にリヤフロアサ
イドメンバ７，７が両側に縦に固設されている。 That is, in the floor 1 of the automobile, a rear floor panel 3 is connected after a center floor panel 2, a rising portion 21 is formed at the rear end of the center floor panel 2, and the rear floor panel 3 is connected to this rising portion 21. Side sills 4, 4 are fixed to both sides of the center floor panel 2, and a cross member 5 is fixed to the rising portion 21 of the center floor panel 2 in the lateral direction of the vehicle body, and is used to connect suspension members such as tension rods and trailing arms. Suspension mounting brackets 6, 6, . . . for mounting are fixed to this cross member 5. Further, rear floor side members 7, 7 are vertically fixed on both sides of the rear floor panel 3 from the rising portion 21.
しかしながら、このような従来のフロア１で
は、クロスメンバ５をセンタフロアパネル２の立
上り部２１に結合した部位の剛性が非常に高いも
のになつているので、サスペンシヨン系からの振
動がサスペンシヨン取付ブラケツト６，６…を介
してクロスメンバ５に伝達されると、センタフロ
アパネル２およびフロア１全体に減衰することな
く伝達され、センタフロアパネル２等が振動して
大きな騒音を発生し、乗員を不快にして居住性を
損なうという問題点があつた。 However, in such a conventional floor 1, the rigidity of the part where the cross member 5 is connected to the rising part 21 of the center floor panel 2 is extremely high, so vibrations from the suspension system are When transmitted to the cross member 5 via the brackets 6, 6, etc., it is transmitted to the center floor panel 2 and the entire floor 1 without attenuation, causing the center floor panel 2, etc. to vibrate and generate large noise, which may harm the occupants. There was a problem that it was uncomfortable and impaired livability.
「発明の目的」
本発明は、このような従来の問題点に着目して
なされたもので、サスペンシヨン系の振動がフロ
アに伝達されるとき減衰するようにして上記問題
点を解決することを目的としている。``Object of the Invention'' The present invention has been made by focusing on such conventional problems, and aims to solve the above problems by attenuating suspension system vibrations when transmitted to the floor. The purpose is
「発明の構成」
かかる目的を達成するため、本発明において
は、クロスメンバの前後方向の車両中心近傍のフ
ロアパネルに、該クロスメンバに略平行な剛性低
下部を形成したことを特徴とする自動車車体のフ
ロア構造とし、前記結合部付近の剛性を低下させ
てクロスメンバからフロアパネルへの振動伝達効
率を低下させるようにしたものである。``Structure of the Invention'' In order to achieve the above object, the present invention provides an automobile characterized in that a stiffness reducing portion substantially parallel to the cross member is formed in the floor panel near the center of the vehicle in the longitudinal direction of the cross member. The floor structure of the vehicle body is such that the rigidity near the coupling portion is reduced to reduce the efficiency of vibration transmission from the cross member to the floor panel.
「実施例」
以下、図面に基づき本発明の各種実施例を説明
する。なお、従来例ならびに各実施例につき同様
の部位には同一符号を付し重複した説明を省略す
る。"Embodiments" Various embodiments of the present invention will be described below based on the drawings. Note that similar parts in the conventional example and each embodiment are given the same reference numerals, and duplicate explanations will be omitted.
第２図および第３図は本発明の第１実施例を示
しており、クロスメンバ５の前方つまり前後方向
の車両中心Ｐ側であつてクロスメンバ５と立上り
部２１との結合部付近に位置してセンタフロアパ
ネル２にクロスメンバ５と略平行な剛性低下部８
を形成してあり、剛性低下部８はサスペンシヨン
取付ブラケツト６，６…に対応してそれらの前方
にクロスメンバ５と略平行に穿設したスリツト８
１，８１…を有して成る。 2 and 3 show a first embodiment of the present invention, which is located in front of the cross member 5, that is, on the vehicle center P side in the longitudinal direction, and near the joint between the cross member 5 and the rising portion 21. Then, a reduced rigidity portion 8 is provided on the center floor panel 2 that is approximately parallel to the cross member 5.
The reduced rigidity portion 8 is formed by a slit 8 bored approximately parallel to the cross member 5 in front of the suspension mounting brackets 6, 6...
1,81...
センタフロアパネル２の剛性の低下による車体
の剛性の低下を補うため、センタフロアパネル２
を介することなくクロスメンバ５とサイドシル４
との間に補強材９が架設されている。また、スリ
ツト８１からの水や塵埃の進入を防止するためセ
ンタフロアパネル２にはスリツト８１を塞ぐメル
シート２２が貼着されている。 In order to compensate for the decrease in the rigidity of the vehicle body due to the decrease in the rigidity of the center floor panel 2, the center floor panel 2
cross member 5 and side sill 4 without going through
A reinforcing member 9 is installed between the two. Further, in order to prevent water and dust from entering through the slit 81, a Mel sheet 22 is attached to the center floor panel 2 to close the slit 81.
上記構成を有するフロア１では、サスペンシヨ
ン系からの振動がサスペンシヨン取付ブラケツト
６，６…を介してクロスメンバ５に伝達され、さ
らにセンタフロアパネル２に伝達するとき、剛性
低下部８のために伝達効率が低下し、減衰して伝
達され、センタフロアパネル２の振動が抑制され
るので騒音の発生が抑えられる。すなわちリヤサ
スペンシヨンの右側のインナブシユからサスペン
シヨン取付ブラケツト６を上下に加振して運転席
の耳の位置で車体放射伝達特性を測定した第６図
に示すように、振動の車体放射伝達特性は実線で
あらわされた従来のものに対して破線であらわさ
れた本実施例に係るものでは特性レベルが著しく
低下し、特に100Hzから200Hzまでの低周波数の振
動に対して効果を生じていることがわかる。 In the floor 1 having the above configuration, when vibrations from the suspension system are transmitted to the cross member 5 via the suspension mounting brackets 6, 6, . The transmission efficiency is reduced, the vibration is attenuated and transmitted, and the vibration of the center floor panel 2 is suppressed, thereby suppressing the generation of noise. In other words, as shown in Figure 6, which vibrates the suspension mounting bracket 6 up and down from the right inner bush of the rear suspension and measures the vehicle body radiation transfer characteristics at the driver's seat ear position, the vehicle body radiation transfer characteristics of vibration are as follows. It can be seen that the characteristic level of the conventional one shown by the solid line and the one according to this embodiment shown by the broken line is significantly lower, and is particularly effective against low frequency vibrations from 100Hz to 200Hz. Recognize.
第４図および第５図は第２実施例を示してお
り、剛性低下部８としてサスペンシヨン取付ブラ
ケツト６，６…に対応してそれらの前方つまり前
後方向の車両中心Ｐ側にクロスメンバ５と略平行
に波形部８２，８２…を設けたもので、波形部８
２は車体前後方向に波が連なり横方向に延びてい
る。 4 and 5 show a second embodiment, in which a cross member 5 is provided as a stiffness reducing portion 8 in front of the suspension mounting brackets 6, 6, . . . on the side of the vehicle center P in the longitudinal direction. Waveform parts 82, 82... are provided approximately in parallel, and the waveform part 8
2, waves are continuous in the longitudinal direction of the vehicle body and extend laterally.
本実施例においても、サスペンシヨン系からの
振動がサスペンシヨン取付ブラケツト６，６…を
介してクロスメンバ５に伝達され、さらにセンタ
フロアパネル２に伝達するとき、剛性低下部８の
ために伝達効率が低下し、減衰して伝達され、セ
ンタフロアパネル２の振動が抑制されるので騒音
の発生が抑えられる。 In this embodiment as well, when vibrations from the suspension system are transmitted to the cross member 5 via the suspension mounting brackets 6, 6, . is transmitted in an attenuated manner, and the vibration of the center floor panel 2 is suppressed, thereby suppressing the generation of noise.
本実施例によれば、センタフロアパネル２に穴
が明かないので水や塵埃が侵入するおそれがな
く、前記実施例の如きメルシート２２を必要とし
ないので簡易に剛性低下部８を形成でき、かつ重
量増加もしないという利点がある。なお、本実施
例においては、リヤサスペンシヨン側を例示した
が、図２に２点鎖線で示すように、ダツシユロア
クロスメンバ５ａを介してフロントサスペンシヨ
ンロツド（図示せず）を接合し、その車両中心Ｐ
側に剛性低下部８１ａを形成してもよい。 According to this embodiment, there is no hole in the center floor panel 2, so there is no risk of water or dust entering, and since the melt sheet 22 as in the previous embodiment is not required, the reduced rigidity portion 8 can be easily formed. It has the advantage of not increasing weight. In this embodiment, the rear suspension side is illustrated, but as shown by the two-dot chain line in FIG. 2, the front suspension rod (not shown) is connected via the dart lower cross member 5a. , the vehicle center P
A reduced-rigidity portion 81a may be formed on the side.
「発明の効果」
本発明に係る自動車車体のフロア構造によれ
ば、サスペンシヨン系からの振動の伝達効率を低
下させ振動が減衰してフロアへ伝達されるので、
フロアの振動が抑制され車室の騒音が抑えられ、
ロードノイズ等による室内騒音が低下し、居住性
が著しく向上する。"Effects of the Invention" According to the floor structure of an automobile body according to the present invention, the transmission efficiency of vibrations from the suspension system is reduced and the vibrations are attenuated and transmitted to the floor.
Floor vibrations are suppressed and cabin noise is suppressed.
Indoor noise caused by road noise, etc. is reduced, and livability is significantly improved.
第１図は従来のフロアの平面図、第２図および
第３図は本発明の第１実施例を示し、第１図はフ
ロアの平面図、第３図は第２図―断面図、第
４図および第５図は第２実施例を示し、第４図は
フロアの平面図、第５図は第４図―断面図、
第６図は車体放射伝達特性をあらわす線図であ
る。
１…フロア、２…センタフロアパネル、４…サ
イドシル、５…クロスメンバ、６…サスペンシヨ
ン取付ブラケツト、８…剛性低下部、８１…スリ
ツト、８２…波形部、９…補強材、Ｐ…車両中
心。
Fig. 1 is a plan view of a conventional floor, Figs. 2 and 3 show a first embodiment of the present invention, Fig. 1 is a plan view of the floor, Fig. 3 is Fig. 2 - sectional view, 4 and 5 show the second embodiment, FIG. 4 is a plan view of the floor, FIG. 5 is a sectional view of FIG.
FIG. 6 is a diagram showing the radiation transfer characteristics of the vehicle body. DESCRIPTION OF SYMBOLS 1...Floor, 2...Center floor panel, 4...Side sill, 5...Cross member, 6...Suspension mounting bracket, 8...Reduced rigidity part, 81...Slit, 82...Corrugated part, 9...Reinforcement material, P...Vehicle center .
Claims (1)
ラケツトがフロアパネル下面に結合された自動車
車体のフロア構造であつて、前記クロスメンバの
車両中心側近傍の前記フロアパネルに、該クロス
メンバと略平行に剛性低下部を形成したことを特
徴とする自動車車体のフロア構造。1. A floor structure of an automobile body in which a suspension mounting bracket is connected to the lower surface of a floor panel via a cross member, wherein the floor panel near the center of the vehicle of the cross member has a reduced rigidity approximately parallel to the cross member. A floor structure of an automobile body characterized by forming a section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15657883A JPS6047769A (en) | 1983-08-26 | 1983-08-26 | Automobile body floor construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15657883A JPS6047769A (en) | 1983-08-26 | 1983-08-26 | Automobile body floor construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6047769A JPS6047769A (en) | 1985-03-15 |
| JPS6318554B2 true JPS6318554B2 (en) | 1988-04-19 |
Family
ID=15630822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15657883A Granted JPS6047769A (en) | 1983-08-26 | 1983-08-26 | Automobile body floor construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047769A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1439110A3 (en) * | 2003-01-16 | 2004-11-03 | Mazda Motor Corporation | Floor panel structure of vehicle body |
| FR2897829B1 (en) * | 2006-02-24 | 2009-04-03 | Peugeot Citroen Automobiles Sa | STRUCTURE OF MOTOR VEHICLE ANTI-VIBRATION. |
| KR101332654B1 (en) * | 2011-08-15 | 2013-11-25 | 도요타 지도샤（주） | Vehicle underbody structure |
-
1983
- 1983-08-26 JP JP15657883A patent/JPS6047769A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6047769A (en) | 1985-03-15 |
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