JP6864286B2

JP6864286B2 - Mounting structure of damping mass

Info

Publication number: JP6864286B2
Application number: JP2016216360A
Authority: JP
Inventors: 健一重富; 友章村上; 宏西迫; 北斗向井; 孝陣内; 弘太郎捧; 晋佐野; 昂史 ▲高▼橋
Original assignee: Mazda Motor Corp; Y Tec Corp
Current assignee: Mazda Motor Corp; Y Tec Corp
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2021-04-28
Anticipated expiration: 2036-11-04
Also published as: JP2018070104A

Description

本発明は、例えば自動車用部品等の制振対象物にマス部材が取り付けられる制振用マスの取付構造に関し、特に、剛性、精度、防錆が要求される制振対象物への取付構造に関する。 The present invention relates to a mounting structure of a vibration damping mass in which a mass member is attached to a vibration damping object such as an automobile part, and particularly to a mounting structure to a vibration damping object that requires rigidity, accuracy, and rust prevention. ..

一般に、制振対象物にマス部材を取り付けることによって制振対象物のピーク周波数を有害な周波数とずらすことで、振動を抑制することが行われている。例えば、特許文献１には、フロントデフマウントメンバー内にマス部材を固定する場合に、メンバー内にマス部材を挿入した状態で、メンバーの外側から該メンバーにエンボス加工を施して突起を形成し、この突起をマス部材に食い込ませることによってメンバー内にマス部材を固定することが開示されている。また、特許文献２には、マス部材を制振対象物に対し弾性的に連結し、マス部材を振動させることで制振対象物の所定の周波数の振動を抑制するダイナミックダンパとして、互いに間隔をあけて配置される２つの取付部材に対して１つのマス部材を、ゴム部材を介在させた状態で連結する構造、すなわちマス部材を取付部材を介して制振対象物に取付ける構造が開示されている。 Generally, vibration is suppressed by attaching a mass member to the vibration damping object to shift the peak frequency of the vibration damping object from a harmful frequency. For example, in Patent Document 1, when a mass member is fixed in a front differential mount member, the member is embossed from the outside of the member to form a protrusion with the mass member inserted in the member. It is disclosed that the mass member is fixed in the member by biting the protrusion into the mass member. Further, in Patent Document 2, the mass members are elastically connected to the vibration damping object, and the mass members are vibrated to suppress the vibration of the vibration damping object at a predetermined frequency. A structure in which one mass member is connected to two mounting members arranged apart from each other with a rubber member interposed therebetween, that is, a structure in which the mass member is attached to a vibration damping object via the mounting member is disclosed. There is.

実用新案登録第２５９９０７７号公報Utility Model Registration No. 2599077 特開２０１３−２４３９２号公報Japanese Unexamined Patent Publication No. 2013-24392

ところで、例えば、自動車のサスペンション装置を構成するクロスメンバにはサスペンションアームが揺動自在に取り付けられている。自動車の走行時には、タイヤに発生した振動がサスペンションアームを介してクロスメンバに伝達してクロスメンバが振動し、そのクロスメンバの振動が車体（ボデー）に伝達して車内騒音の原因になることがある。 By the way, for example, a suspension arm is swingably attached to a cross member constituting an automobile suspension device. When a car is running, the vibration generated in the tires is transmitted to the cross member via the suspension arm and the cross member vibrates, and the vibration of the cross member is transmitted to the vehicle body (body) and causes noise inside the car. is there.

クロスメンバの振動を抑制する構造として、例えば特許文献１のようなマスダンパを設けることが考えられる。これによれば、マスダンパをクロスメンバの内部に収容することができるのでスペース効率を高めることができる反面、クロスメンバの外側にエンボス加工を施す必要があるので、クロスメンバの一部を凹ませることになる。クロスメンバの一部が凹んでしまうと該クロスメンバの剛性低下を招く恐れがある。これに対し、マス部材を制振対象物に溶接することが考えられるが、マス部材が制振対象物よりも厚肉で熱容量が大きい場合、マス部材が十分に加熱され溶接されるまでに制振対象物の溶接部位が過剰に加熱され熱歪みが生じることが考えられる。 As a structure for suppressing the vibration of the cross member, it is conceivable to provide a mass damper as in Patent Document 1, for example. According to this, since the mass damper can be housed inside the cross member, space efficiency can be improved, but on the other hand, it is necessary to emboss the outside of the cross member, so that a part of the cross member is dented. become. If a part of the cross member is dented, the rigidity of the cross member may decrease. On the other hand, it is conceivable to weld the mass member to the vibration damping object, but if the mass member is thicker and has a larger heat capacity than the vibration damping object, the mass member is sufficiently heated and controlled until it is welded. It is conceivable that the welded part of the object to be shaken is overheated and thermal strain occurs.

そこで、特許文献２のダイナミックダンパのように２つの取付部材を設け、各取付部材をクロスメンバに固定するようにすれば、クロスメンバには特許文献１のような凹みを設けずに済み、また溶接しても熱歪みを抑制できるので剛性低下を回避することができると考えられる。 Therefore, if two mounting members are provided like the dynamic damper of Patent Document 2 and each mounting member is fixed to the cross member, the cross member does not have to be provided with a recess as in Patent Document 1 and also. Since thermal strain can be suppressed even by welding, it is considered that a decrease in rigidity can be avoided.

しかしながら、クロスメンバの剛性を更に高めたい場合があり、この場合には、特許文献２のダイナミックダンパをクロスメンバに取り付けたとしても、２つの取付部材の間にゴム部材が介在しているので、２つの取付部材の相対的な動きが拘束されることはなく、従ってクロスメンバの剛性向上には寄与しない。このため、クロスメンバを制振しながら該クロスメンバの剛性も向上させようとすると、特許文献２のダイナミックダンパとは別に補強部材を設けて補強したり、クロスメンバの板厚を厚くすることによって補強する必要が生じるので、部品点数や重量の増加を招く結果となる。また、自動車のクロスメンバ以外の部材でも同様に制振しながら剛性を高めたい場合がある。 However, there are cases where it is desired to further increase the rigidity of the cross member. In this case, even if the dynamic damper of Patent Document 2 is attached to the cross member, a rubber member is interposed between the two attachment members. The relative movements of the two mounting members are not constrained and therefore do not contribute to the increased rigidity of the cross member. Therefore, in order to improve the rigidity of the cross member while suppressing the vibration of the cross member, a reinforcing member may be provided separately from the dynamic damper of Patent Document 2 to reinforce the cross member, or the thickness of the cross member may be increased. Since it is necessary to reinforce the parts, the number of parts and the weight are increased. In addition, there are cases where it is desired to increase the rigidity of a member other than the cross member of an automobile while suppressing vibration in the same manner.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、マス部材を制振対象物に取り付けて制振効果を得る場合にスペース効率を高め、しかも、部品点数や重量の増加を抑制しつつ制振対象物の剛性を高めることができるようにすることにある。 The present invention has been made in view of this point, and an object of the present invention is to improve space efficiency when a mass member is attached to a vibration damping object to obtain a vibration damping effect, and the number of parts and weight are increased. The purpose is to make it possible to increase the rigidity of the vibration damping object while suppressing the increase in the vibration damping object.

上記目的を達成するために、本発明では、制振用マスを制振対象物の内部に配置するとともに、マス部材を制振対象物に取り付けるための金属製板材からなる取付部材を利用して制振対象物の剛性を向上させるようにした。 In order to achieve the above object, in the present invention, the damping mass is arranged inside the damping object, and the mounting member made of a metal plate material for mounting the mass member to the damping object is used. The rigidity of the damping object was improved.

第１の発明は、中空状の制振対象物に取り付けられる制振用マスの取付構造において、上記制振用マスは、マス部材と、該マス部材を上記制振対象物に取り付けるための金属製板材からなる一体物の取付部材とを備え、該取付部材は１つであり、上記取付部材には、互いに間隔をあけて第１固定部及び第２固定部が設けられ、上記マス部材は、上記取付部材に対して、少なくとも上記取付部材の中央部よりも上記第１固定部に近い部位及び上記第２取付部に近い部位にそれぞれ剛体結合され、上記制振用マスは、上記制振対象物の内部に収容されるとともに、上記第１固定部及び上記第２固定部が上記制振対象物に固定されることにより該制振対象物に取り付けられ、上記取付部材の上記第１固定部及び上記第２固定部の離間方向の寸法は、上記マス部材の同方向の寸法よりも長く設定されていることを特徴とする。 The first invention is a mounting structure of a vibration damping mass attached to a hollow vibration damping object, wherein the vibration damping mass is a mass member and a metal for attaching the mass member to the vibration damping object. and a mounting member integrally composed of manufacturing plate material, the mounting member is one in the mounting member, the first and second fixing portions are spaced apart from one another, the mass member , The mounting member is rigidly coupled to at least a portion closer to the first fixing portion and a portion closer to the second mounting portion than the central portion of the mounting member, and the vibration damping mass is the vibration damping mass. While being housed inside the object, the first fixing portion and the second fixing portion are fixed to the vibration damping object to be attached to the vibration damping object, and the first fixing of the mounting member is performed. The dimension of the portion and the second fixing portion in the separation direction is set longer than the dimension of the mass member in the same direction .

この構成によれば、制振用マスが制振対象物の内部に収容された状態で該制振対象物に取り付けられるので、制振対象物の内部が有効に利用されてスペース効率が向上する。また、取付部材の第１固定部及び第２固定部が制振対象物に固定されると、これら第１固定部及び第２固定部が互いに離れているので、制振対象物の互いに離れた複数箇所が取付部材によって連結されることになる。このとき、取付部材が金属製板材からなる一体物であるため、取付部材によって制振対象物が補強される。つまり、マス部材を取り付けるための取付部材を利用して制振対象物を補強することが可能になるので、制振対象物に対して別に補強部材を設けたり、制振対象物の肉厚を厚くすることなく、制振対象物の剛性を高めることが可能になる。 According to this configuration, since the vibration damping mass is attached to the vibration damping object while being housed inside the vibration damping object, the inside of the vibration damping object is effectively used and the space efficiency is improved. .. Further, when the first fixing portion and the second fixing portion of the mounting member are fixed to the vibration damping object, the first fixing portion and the second fixing portion are separated from each other, so that the vibration damping object is separated from each other. Multiple locations will be connected by mounting members. At this time, since the mounting member is an integral body made of a metal plate material, the vibration damping target is reinforced by the mounting member. That is, since it is possible to reinforce the vibration damping object by using the mounting member for attaching the mass member, it is possible to separately provide a reinforcing member for the vibration damping object or to increase the wall thickness of the vibration damping object. It is possible to increase the rigidity of the vibration damping object without increasing the thickness.

また、マス部材が取付部材に対して強固に一体化するので、マス部材によって取付部材の剛性が高まり、これにより、取付部材による制振対象物の補強効果がより一層高まると共に、制振対象物とマス部材の連結剛性が高まり、一体性を高められる。 Further, since the mass member is firmly integrated with the mounting member, the rigidity of the mounting member is increased by the mass member, whereby the effect of reinforcing the vibration damping object by the mounting member is further enhanced, and the vibration damping object is further enhanced. The connection rigidity of the mass member is increased, and the unity is enhanced.

第２の発明は、第１の発明において、上記取付部材における上記第１固定部と上記第２固定部との間の部分は、上記制振対象物から離れるように形成され、上記制振対象物には塗装が施されていることを特徴とする。 In the second invention, in the first invention, the portion of the mounting member between the first fixing portion and the second fixing portion is formed so as to be separated from the vibration damping object, and the vibration damping object is formed. The feature is that the object is painted.

この構成によれば、取付部材における第１固定部と第２固定部との間の部分が制振対象物から離れているので、取付部材を制振対象物に取り付けた後に該制振対象物に塗装を施す場合に、塗料が制振対象物と取付部材との間に入り込み易くなり、制振対象物と取付部材の塗装工程が容易になる。 According to this configuration, since the portion of the mounting member between the first fixing portion and the second fixing portion is separated from the vibration damping object, the vibration damping object is attached after the mounting member is attached to the vibration damping object. The paint easily enters between the vibration damping object and the mounting member, and the painting process of the vibration damping object and the mounting member becomes easy .

第３の発明は、第１または２の発明において、上記マス部材は、金属製板材からなり、上記取付部材に対してかしめ部材によりかしめ固定されていることを特徴とする。 A third invention is characterized in that, in the first or second invention, the mass member is made of a metal plate material and is caulked and fixed to the mounting member by a caulking member.

この構成によれば、溶接や接着の容易さに関係なく金属製板材からなるマス部材が取付部材に対して強固に一体化するので、マス部材によって取付部材の剛性が高まり、これにより、取付部材による制振対象物の補強効果がより一層高まる。 According to this configuration, the mass member made of a metal plate material is firmly integrated with the mounting member regardless of the ease of welding or bonding, so that the mass member increases the rigidity of the mounting member, thereby increasing the rigidity of the mounting member. The effect of reinforcing the vibration damping object is further enhanced.

第４の発明は、第３の発明において、上記マス部材は、上記制振対象物のピッチング中心から離間した部位に配設されていることを特徴とする。 A fourth invention, in the third invention, the mass member may be disposed on the portion spaced from the pitching center of the vibration damping target.

この構成によれば、少ない重量で効果的に制振対象のピーク周波数をずらして、制振対象物全体が揺動するピッチングを抑制できる。 According to this configuration, by shifting the effective damping target peak frequency with less weight, total damping object can suppress pitching of the swing.

第５の発明は、第１から４のいずれか１つの発明において、上記第１固定部と上記第２固定部は上記制振対象物にスポット溶接されていることを特徴とする。 A fifth aspect of the invention is characterized in that, in any one of the first to fourth inventions, the first fixing portion and the second fixing portion are spot-welded to the vibration damping object.

この構成によれば、取付部材を制振対象物に固定する際に制振対象物の熱歪みが起こりにくくなり、制振対象物の変形が抑制される。 According to this configuration, when the mounting member is fixed to the vibration damping object, thermal distortion of the vibration damping object is less likely to occur, and deformation of the vibration damping object is suppressed.

第６の発明は、第１から５のいずれか１つの発明において、上記制振対象物は、金属製板材からなる自動車用部品であり、自動車の左右方向に長く延びるとともに左右方向中央部が、屈曲して形成されるか、またはその幅が両側の幅に比べて狭く形成されており、上記第１固定部と上記第２固定部は、上記制振対象物の左右方向中央部に固定されていることを特徴とする。 A sixth aspect of the present invention is the invention according to any one of the first to fifth aspects, wherein the vibration damping object is an automobile part made of a metal plate material, which extends long in the left-right direction of the automobile and has a central portion in the left-right direction. It is formed by bending, or its width is narrower than the widths on both sides, and the first fixing portion and the second fixing portion are fixed to the central portion in the left-right direction of the vibration damping object. It is characterized by being.

すなわち、制振対象物の左右方向中央部が屈曲して成形されるか、またはその幅が両側に比べて狭いので、該中央部の剛性が低下し易くなるが、この中央部に第１固定部と第２固定部を固定することで、中央部が取付部材により補強されて制振対象物全体としての剛性が高まる。 That is, since the central portion of the vibration damping object in the left-right direction is bent and molded, or the width thereof is narrower than that of both sides, the rigidity of the central portion tends to decrease, but the first fixation is made to this central portion. By fixing the portion and the second fixing portion, the central portion is reinforced by the mounting member, and the rigidity of the vibration damping object as a whole is increased.

第７の発明は、第１から５のいずれか１つの発明において、上記制振対象物は、金属製板材からなる自動車用部品であり、上記制振対象物には、別の部材が接合されており、上記第１固定部と上記第２固定部は、上記制振対象物における上記別の部材が接合される部分を跨ぐように配置されて該制振対象物に固定されていることを特徴とする。 According to a seventh aspect of the present invention, in any one of the first to fifth aspects, the vibration damping object is an automobile part made of a metal plate material, and another member is joined to the vibration damping object. The first fixing portion and the second fixing portion are arranged so as to straddle the portion of the vibration damping object to which the other members are joined and are fixed to the vibration damping object. It is a feature.

この構成によれば、制振対象物における別の部材が接合される部分が取付部材によって補強される。 According to this configuration, the portion of the vibration damping object to which another member is joined is reinforced by the mounting member.

第１の発明によれば、制振用マスを中空状の制振対象物の内部に取り付けるようにしたので、制振効果を得ながらスペース効率を高めることができる。そして、金属製板材からなる一体物の取付部材に設けた第１固定部及び第２固定部を制振対象物に固定することで、部品点数や重量の増加を抑制しつつ制振対象物の剛性を高めることができる。 According to the first invention, since the damping mass is attached to the inside of the hollow damping object, the space efficiency can be improved while obtaining the damping effect. Then, by fixing the first fixing portion and the second fixing portion provided on the mounting member of the integral object made of a metal plate material to the vibration damping object, the vibration damping object is suppressed while suppressing the increase in the number of parts and the weight. Rigidity can be increased.

また、マス部材を利用して取付部材の剛性を高めることができるので、制振対象物の剛性をより一層高めることができると共に、制振対象物とマス部材の一体性が高まることにより、制振対象物のピーク周波数を効果的に有害な周波数からずらすことができる。 Further, since the rigidity of the mounting member can be increased by using the mass member, the rigidity of the vibration damping object can be further increased, and the integrity of the vibration damping object and the mass member is enhanced, thereby controlling the vibration. The peak frequency of the vibration target can be effectively shifted from the harmful frequency.

第２の発明によれば、取付部材における第１固定部と第２固定部との間の部分が制振対象物から離れているので、塗装工程で塗料が制振対象物と取付部材との間に入り込み易くなり、塗装工程を容易にすることができる。 According to the second invention, since the portion of the mounting member between the first fixing portion and the second fixing portion is separated from the vibration damping object, the paint is applied to the vibration damping object and the mounting member in the painting process. It becomes easy to get in between, and the painting process can be facilitated .

第３の発明によれば、溶接や接着の容易さに関係なく金属製板材からなるマス部材を利用して取付部材の剛性を高めることができるので、制振対象物の剛性をより一層高めることができる。 According to the third invention, the rigidity of the mounting member can be increased by using a mass member made of a metal plate material regardless of the ease of welding or adhesion, so that the rigidity of the vibration damping object can be further increased. Can be done.

第４の発明によれば、少ない重量で効果的に制振対象のピーク周波数をずらして、制振対象物全体が揺動するピッチングを抑制でき、ピッチングに起因する有害な振動を抑制できる。 According to a fourth aspect of the present invention, by shifting the effective damping target peak frequency with less weight, total damping object can suppress pitching of the swing can be suppressed harmful vibration due to pitching.

第５の発明によれば、取付部材の第１固定部と第２固定部を制振対象物にスポット溶接したので、制振対象物の熱歪みによる変形を抑制することができる。 According to the fifth invention, since the first fixing portion and the second fixing portion of the mounting member are spot-welded to the vibration damping object, deformation of the vibration damping object due to thermal strain can be suppressed.

第６の発明によれば、制振対象物が自動車用部品であり、左右方向中央部が屈曲して形成されるか、またはその幅が両側の幅に比べて狭く形成されている場合に、第１固定部と第２固定部を制振対象物の左右方向中央部に固定することで、制振対象物全体としての剛性を高めることができる。 According to the sixth invention, when the vibration damping object is an automobile part and the central portion in the left-right direction is bent or formed, or the width thereof is formed narrower than the widths on both sides. By fixing the first fixing portion and the second fixing portion to the central portion in the left-right direction of the vibration damping object, the rigidity of the vibration damping object as a whole can be increased.

第７の発明によれば、制振対象物における別の部材が接合される部分を取付部材によって補強することができる。 According to the seventh invention, the portion of the vibration damping object to which another member is joined can be reinforced by the mounting member.

サスペンション支持部材を上方から見た斜視図である。It is a perspective view which looked at the suspension support member from above. サスペンション支持部材の平面図である。It is a top view of the suspension support member. 右側サイドメンバの上側後半板材を下方から見た図である。It is the figure which looked at the upper latter half plate material of the right side member from the lower side. サイドメンバ用制振用マスを下方から見た斜視図である。It is a perspective view which looked at the vibration damping mass for a side member from the bottom. 図３におけるV−V線に相当する断面図である。It is sectional drawing corresponding to VV line in FIG. フロントクロスメンバの前側板材を後側から見た図である。It is the figure which looked at the front side plate material of a front cross member from the rear side. フロントクロスメンバ用制振用マスを下方から見た斜視図である。It is a perspective view which looked at the vibration damping mass for a front cross member from the bottom.

以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

図１は、本発明の実施形態に係るサスペンション支持部材１を上方から見た斜視図である。このサスペンション支持部材１は、自動車の車体の下部において後側に取り付けられ、図示しないサスペンションアームを揺動自在に支持するための自動車用部品である。サスペンション支持部材１、サスペンションアーム、スプリング（図示せず）等によって車両のリヤサスペンション装置が構成されている。尚、この実施形態の説明では、車両前側を単に前といい、車両後側を単に後といい、車両左側を単に左といい、車両右側を単に右というものとする。 FIG. 1 is a perspective view of the suspension support member 1 according to the embodiment of the present invention as viewed from above. The suspension support member 1 is an automobile component that is attached to the rear side of the lower part of the vehicle body of an automobile and is for swingably supporting a suspension arm (not shown). The rear suspension device of the vehicle is composed of a suspension support member 1, a suspension arm, a spring (not shown), and the like. In the description of this embodiment, the front side of the vehicle is simply referred to as the front side, the rear side of the vehicle is simply referred to as the rear side, the left side of the vehicle is simply referred to as the left side, and the right side of the vehicle is simply referred to as the right side.

（サスペンション支持部材の全体構成）
サスペンション支持部材１は、フロントクロスメンバ１０と、リヤクロスメンバ２０と、右側サイドメンバ３０と、左側サイドメンバ４０と、連結部材５０、５０とを備えており、フロントクロスメンバ１０、リヤクロスメンバ２０、右側サイドメンバ３０、左側サイドメンバ４０及び連結部材５０、５０が互いに連結されて一体化されている。フロントクロスメンバ１０は、サスペンション支持部材１の前側部分に配置されていて左右方向に延びる部材である。また、リヤクロスメンバ２０は、サスペンション支持部材１の後側部分、即ち、フロントクロスメンバ１０から後方に離れて配置されていて左右方向に延びる部材である。また、右側サイドメンバ３０は、フロントクロスメンバ１０の右端部とリヤクロスメンバ２０の右端部とを連結する部材であり、湾曲しながら前後方向に延びている。また、左側サイドメンバ４０は、フロントクロスメンバ１０の左端部とリヤクロスメンバ２０の左端部とを連結する部材であり、湾曲しながら前後方向に延びている。さらに、連結部材５０、５０は、フロントクロスメンバ１０の左右方向中間部とリヤクロスメンバ２０の左右方向中間部とを連結する部材である。 (Overall configuration of suspension support member)
The suspension support member 1 includes a front cross member 10, a rear cross member 20, a right side member 30, a left side member 40, and connecting members 50 and 50, and includes a front cross member 10, a rear cross member 20, and a rear cross member 20. , Right side member 30, left side member 40 and connecting members 50, 50 are connected to each other and integrated. The front cross member 10 is a member that is arranged on the front side portion of the suspension support member 1 and extends in the left-right direction. Further, the rear cross member 20 is a member that is arranged rearward from the rear side portion of the suspension support member 1, that is, the front cross member 10, and extends in the left-right direction. Further, the right side member 30 is a member that connects the right end portion of the front cross member 10 and the right end portion of the rear cross member 20, and extends in the front-rear direction while being curved. Further, the left side member 40 is a member that connects the left end portion of the front cross member 10 and the left end portion of the rear cross member 20, and extends in the front-rear direction while being curved. Further, the connecting members 50 and 50 are members that connect the left-right intermediate portion of the front cross member 10 and the left-right intermediate portion of the rear cross member 20.

また、フロントクロスメンバ１０、リヤクロスメンバ２０、右側サイドメンバ３０、左側サイドメンバ４０及び連結部材５０、５０は塗装されている。フロントクロスメンバ１０、リヤクロスメンバ２０、右側サイドメンバ３０及び左側サイドメンバ４０は後述するように中空状であり、内面も外面と同様に塗装されている。 Further, the front cross member 10, the rear cross member 20, the right side member 30, the left side member 40, and the connecting members 50 and 50 are painted. The front cross member 10, the rear cross member 20, the right side member 30, and the left side member 40 are hollow as described later, and the inner surface is also painted in the same manner as the outer surface.

（フロントクロスメンバの構成）
フロントクロスメンバ１０は、例えば鋼鈑等の金属製板材からなる前側板材１１と後側板材１２とを備えており、内部は中空状とされている。図６にも示すように、前側板材１１は、上下方向に延びるともに左右方向に延びる前板部１１ａと、前板部１１ａの上縁部から後方へ延びる上板部１１ｂと、前板部１１ａの下縁部から後方へ延びる下板部１１ｃとを有している。前板部１１ａ、上板部１１ｂ及び下板部１１ｃは１枚の板材をプレス成形することによって一体に形成されている。前側板材１１の上下方向の寸法（前側板材１１の幅）は、左右方向中央部が左右両側に比べて短くなっている。前板部１１ａの右側の上下方向中間部には、右側サイドメンバ３０が嵌まる右側切欠部１１ｄが形成されている。前板部１１ａの右側の上部及び下部には、右車輪用サスペンションアームが連結される右側連結部１１ｅ、１１ｅがそれぞれ形成されている。また、前板部１１ａの左側の上下方向中間部には、左側サイドメンバ４０が嵌まる左側切欠部１１ｆが形成されている。前板部１１ａの左側の上部及び下部には、左車輪用サスペンションアームが連結される右側連結部１１ｇ、１１ｇがそれぞれ形成されている。符号７０は、フロントクロスメンバ用制振用マスを示しており、これについての詳細は後述する。 (Composition of front cross member)
The front cross member 10 includes a front side plate material 11 and a rear side plate material 12 made of, for example, a metal plate material such as a steel plate, and the inside is hollow. As shown in FIG. 6, the front plate member 11 includes a front plate portion 11a extending in the vertical direction and extending in the horizontal direction, an upper plate portion 11b extending rearward from the upper edge portion of the front plate portion 11a, and a front plate portion 11a. It has a lower plate portion 11c extending rearward from the lower edge portion. The front plate portion 11a, the upper plate portion 11b, and the lower plate portion 11c are integrally formed by press-molding one plate material. The vertical dimension of the front plate member 11 (width of the front plate 11) is shorter in the central portion in the left-right direction than in the left and right sides. A right notch 11d into which the right side member 30 fits is formed in the vertical middle portion on the right side of the front plate portion 11a. Right-side connecting portions 11e and 11e to which the suspension arm for the right wheel is connected are formed on the upper and lower parts on the right side of the front plate portion 11a, respectively. Further, a left notch portion 11f into which the left side member 40 is fitted is formed in the vertical intermediate portion on the left side of the front plate portion 11a. Right-side connecting portions 11g and 11g to which the suspension arm for the left wheel is connected are formed on the upper and lower portions on the left side of the front plate portion 11a, respectively. Reference numeral 70 indicates a vibration damping mass for the front cross member, which will be described in detail later.

図１及び図２に示すように、後側板材１２は、前板部１１ａと同様に上下方向に延びるともに左右方向に延びる後板部１２ａと、後板部１２ａの上縁部から前方へ延びる上板部１２ｂと、後板部１２ａの下縁部から前方へ延びる下板部（図示せず）とを有している。後板部１２ａには、図示しないが前板部１１ａと同様に右側切欠部、左側切欠部、右側連結部及び左側連結部が形成されている。 As shown in FIGS. 1 and 2, the rear side plate member 12 extends in the vertical direction and extends in the horizontal direction as well as the front plate portion 11a, and extends forward from the upper edge portion of the rear plate portion 12a. It has an upper plate portion 12b and a lower plate portion (not shown) extending forward from the lower edge portion of the rear plate portion 12a. Although not shown, the rear plate portion 12a is formed with a right cutout portion, a left side cutout portion, a right side connecting portion, and a left side connecting portion, similarly to the front plate portion 11a.

そして、前側板材１１の上板部１１ｂと後側板材１２の上板部１２ｂとが厚み方向（上下方向）に重ね合わされて溶接され、また、前側板材１１の下板部１１ｃと後側板材１２の下板部とが厚み方向に重ね合わされて溶接されている。これにより、前側板材１１と後側板材１２とが一体化されて内部が中空状のフロントクロスメンバ１０が構成される。 Then, the upper plate portion 11b of the front side plate material 11 and the upper plate portion 12b of the rear side plate material 12 are overlapped and welded in the thickness direction (vertical direction), and the lower plate portion 11c and the rear side plate material 12 of the front side plate material 11 are welded. The lower plate portion is overlapped and welded in the thickness direction. As a result, the front side plate material 11 and the rear side plate material 12 are integrated to form a front cross member 10 having a hollow inside.

（リヤクロスメンバの構成）
リヤクロスメンバ２０は、フロントクロスメンバ１０と同様に例えば鋼鈑等の金属製板材からなる前側板材２１と後側板材２２とを備えており、内部は中空状とされている。前側板材２１は、上下方向に延びるともに左右方向に延びる前板部２１ａと、前板部２１ａの上縁部から後方へ延びる上板部２１ｂと、前板部２１ａの下縁部から後方へ延びる下板部（図示せず）とを有している。前板部２１ａ、上板部２１ｂ及び下板部は１枚の板材をプレス成形することによって一体に形成されている。前板部２１ａの右側の上下方向中間部には、右側サイドメンバ３０が嵌まる右側切欠部２１ｄが形成されている。また、前板部２１ａの左側の上下方向中間部には、左側サイドメンバ４０が嵌まる左側切欠部２１ｆが形成されている。 (Rear cross member configuration)
Like the front cross member 10, the rear cross member 20 includes a front side plate material 21 and a rear side plate material 22 made of a metal plate material such as a steel plate, and the inside is hollow. The front plate member 21 extends from the front plate portion 21a extending in the vertical direction and in the horizontal direction, the upper plate portion 21b extending rearward from the upper edge portion of the front plate portion 21a, and extending rearward from the lower edge portion of the front plate portion 21a. It has a lower plate portion (not shown). The front plate portion 21a, the upper plate portion 21b, and the lower plate portion are integrally formed by press-molding one plate material. A right notch 21d into which the right side member 30 is fitted is formed in the vertical middle portion on the right side of the front plate portion 21a. Further, a left notch portion 21f into which the left side member 40 is fitted is formed in the vertical intermediate portion on the left side of the front plate portion 21a.

後側板材２２は、前板部２１ａと同様に上下方向に延びるともに左右方向に延びる後板部２２ａと、後板部２２ａの上縁部から前方へ延びる上板部２２ｂと、後板部２２ａの下縁部から前方へ延びる下板部（図示せず）とを有している。後板部２２ａには、前板部２１ａと同様に右側切欠部２２ｄ及び左側切欠部２２ｆが形成されている。 The rear plate member 22 includes a rear plate portion 22a extending in the vertical direction and extending in the horizontal direction as in the front plate portion 21a, an upper plate portion 22b extending forward from the upper edge portion of the rear plate portion 22a, and a rear plate portion 22a. It has a lower plate portion (not shown) extending forward from the lower edge portion. The rear plate portion 22a is formed with a right notch portion 22d and a left notch portion 22f, similarly to the front plate portion 21a.

そして、前側板材２１の上板部２１ｂと後側板材２２の上板部２２ｂとが厚み方向（上下方向）に重ね合わされて溶接され、また、前側板材２１の下板部と後側板材２２の下板部とが厚み方向に重ね合わされて溶接されている。これにより、前側板材２１と後側板材２２とが一体化されて内部が中空状のリヤクロスメンバ２０が構成される。 Then, the upper plate portion 21b of the front side plate material 21 and the upper plate portion 22b of the rear side plate material 22 are overlapped and welded in the thickness direction (vertical direction), and the lower plate portion of the front side plate material 21 and the rear side plate material 22 are welded. The lower plate portion is overlapped and welded in the thickness direction. As a result, the front side plate member 21 and the rear side plate material 22 are integrated to form a rear cross member 20 having a hollow inside.

リヤクロスメンバ２０の左右方向の寸法は、フロントクロスメンバ１０の左右方向の寸法よりも短く設定されている。また、リヤクロスメンバ２０にはサスペンションアームの連結部が設けられておらず、このため、リヤクロスメンバ２０の上下方向の寸法はフロントクロスメンバ１０の上下方向の寸法よりも短くなる。 The left-right dimension of the rear cross member 20 is set shorter than the left-right dimension of the front cross member 10. Further, the rear cross member 20 is not provided with a connecting portion for the suspension arm, so that the vertical dimension of the rear cross member 20 is shorter than the vertical dimension of the front cross member 10.

リヤクロスメンバ２０の前側板材２１の前板部２１ａにおける左右方向の中間部と、フロントクロスメンバ１０の後側板材１２の後板部１２ａにおける左右方向の中間部とが連結部材５０、５０によって連結されている。連結部材５０、５０は左右方向に互いに間隔をあけて配置されている。右側の連結部材５０は、前側へ行くほど右に位置するように車体の前後方向に対して傾斜配置され、また、左側の連結部材５０は、前側へ行くほど左に位置するように車体の前後方向に対して傾斜配置されている。 The left-right intermediate portion of the front plate portion 21a of the front cross member 20 and the left-right intermediate portion of the rear plate portion 12a of the front cross member 10 are connected by connecting members 50 and 50. Has been done. The connecting members 50 and 50 are arranged so as to be spaced apart from each other in the left-right direction. The right connecting member 50 is inclined with respect to the front-rear direction of the vehicle body so as to be positioned to the right as it goes to the front side, and the left connecting member 50 is arranged to the left so as to go to the front side. It is arranged at an angle with respect to the direction.

（右側サイドメンバの構成）
右側サイドメンバ３０は、図２に示す平面視で前後方向の中間部が最も左に位置するように全体として湾曲しながら前後方向に延びている。右側サイドメンバ３０の前端部は、フロントクロスメンバ１０の前面よりも前方まで延びるとともに、フロントクロスメンバ１０の右端部よりも右側まで延びている。右側サイドメンバ３０の後端部は、リヤクロスメンバ２０の後面よりも後方まで延びるとともに、リヤクロスメンバ２０の右端部よりも右側まで延びている。右側サイドメンバ３０の前端部及び後端部には、車体（ボデー）に取り付けられるマウント部材３０ａ、３０ａがそれぞれ設けられている。 (Structure of right side member)
The right side member 30 extends in the front-rear direction while being curved as a whole so that the middle portion in the front-rear direction is located on the leftmost side in the plan view shown in FIG. The front end portion of the right side member 30 extends forward from the front surface of the front cross member 10 and extends to the right side of the right end portion of the front cross member 10. The rear end portion of the right side member 30 extends rearward from the rear surface of the rear cross member 20 and extends to the right side of the right end portion of the rear cross member 20. Mount members 30a and 30a to be attached to the vehicle body (body) are provided at the front end and the rear end of the right side member 30, respectively.

右側サイドメンバ３０は例えば鋼鈑等の金属製板材からなる４枚の板材で構成されている。すなわち、右側サイドメンバ３０は、右側サイドメンバ３０の上側かつ略前半部を構成する上側前半板材３１と、右側サイドメンバ３０の上側かつ略後半部を構成する上側後半板材３２と、右側サイドメンバ３０の下側かつ略前半部を構成する下側前半板材３３と、右側サイドメンバ３０の下側かつ略後半部を構成する下側後半板材３４とを備えている。右側サイドメンバ３０の内部は中空状とされている。 The right side member 30 is composed of four plate members made of a metal plate material such as a steel plate. That is, the right side member 30 includes an upper front half plate 31 forming an upper side and substantially the first half of the right side member 30, an upper second half plate 32 forming an upper side and substantially the second half of the right side member 30, and a right side member 30. It includes a lower front half plate member 33 that constitutes a lower side and a substantially front half portion, and a lower rear half plate material 34 that constitutes a lower side and a substantially second half portion of the right side member 30. The inside of the right side member 30 is hollow.

図３に示すように、上側後半板材３２は、上板部３２ａと、上板部３２ａの前縁部から下方へ延びる前板部３２ｂと、上板部３２ａの後縁部から下方へ延びる後板部３２ｃとを有している。上板部３２ａ、前板部３２ｂ及び後板部３２ｃは１枚の板材をプレス成形することによって一体に形成されている。上板部３２ａの右端部には、マウント部材３０ａが嵌まる切欠部３２ｄが形成されている。符号６０は、右側サイドメンバ用制振用マスを示しており、これについての詳細は後述する。 As shown in FIG. 3, the upper rear plate member 32 includes an upper plate portion 32a, a front plate portion 32b extending downward from the front edge portion of the upper plate portion 32a, and a rear portion extending downward from the trailing edge portion of the upper plate portion 32a. It has a plate portion 32c. The upper plate portion 32a, the front plate portion 32b, and the rear plate portion 32c are integrally formed by press-molding one plate material. A notch 32d into which the mount member 30a fits is formed at the right end of the upper plate portion 32a. Reference numeral 60 indicates a vibration damping mass for the right side member, which will be described in detail later.

尚、符号は付さないが、上側前半板材３１は、上側後半板材３２と同様に上板部と前板部と後板部とを有している。上側前半板材３１の後端部と上側後半板材３２の前端部とが溶接されている。また、下側前半板材３３及び下側後半板材３４は、上側前半板材３１及び上側後半板材３２と上下対称に近い形状である。下側前半板材３３の後端部と下側後半板材３４の前端部とが溶接されている。さらに、上側前半板材３１と下側前半板材３３とが溶接され、また、上側後半板材３２と下側後半板材３４とが溶接されている。これにより、上側前半板材３１、上側後半板材３２、下側前半板材３３及び下側後半板材３４が一体化されて内部が中空状の右側サイドメンバ３０が構成される。 Although not designated, the upper front half plate member 31 has an upper plate portion, a front plate portion, and a rear plate portion, similarly to the upper rear half plate material 32. The rear end portion of the upper front half plate member 31 and the front end portion of the upper rear half plate member 32 are welded. Further, the lower front half plate material 33 and the lower rear half plate material 34 have a shape close to vertical symmetry with the upper front half plate material 31 and the upper second half plate material 32. The rear end portion of the lower front half plate member 33 and the front end portion of the lower rear half plate member 34 are welded. Further, the upper front half plate 31 and the lower front half plate 33 are welded, and the upper rear half plate 32 and the lower rear half plate 34 are welded. As a result, the upper front half plate material 31, the upper second half plate material 32, the lower front half plate material 33, and the lower second half plate material 34 are integrated to form the right side member 30 having a hollow inside.

図５に仮想線で示すように、上側後半板材３２の上板部３２ａには、リヤクロスメンバ２０の後側板材２２（別の部材）が溶接によって接合されている。 As shown by a virtual line in FIG. 5, the rear plate member 22 (another member) of the rear cross member 20 is joined to the upper plate portion 32a of the upper rear plate member 32 by welding.

（左側サイドメンバの構成）
左側サイドメンバ４０は右側サイドメンバ３０と左右対称に近い形状であり、右側サイドメンバ３０と同様な構成である。すなわち、図１及び図２に示すように、左側サイドメンバ４０は、上側前半板材４１、上側後半板材４２、下側前半板材４３及び下側後半板材４４を備えており、上側前半板材４１、上側後半板材４２、下側前半板材４３及び下側後半板材４４が一体化されて内部が中空状の左側サイドメンバ４０が構成される。左側サイドメンバ４０の前端部及び後端部には、車体に取り付けられるマウント部材４０ａ、４０ａがそれぞれ設けられている。上側後半板材４２には、リヤクロスメンバ２０の後側板材２２が溶接によって接合されている。 (Structure of left side member)
The left side member 40 has a shape close to left-right symmetry with the right side member 30, and has the same configuration as the right side member 30. That is, as shown in FIGS. 1 and 2, the left side member 40 includes an upper front half plate 41, an upper second half plate 42, a lower front half plate 43, and a lower second half plate 44, and the upper front half plate 41 and the upper side. The latter half plate material 42, the lower front half plate material 43, and the lower rear half plate material 44 are integrated to form a left side member 40 having a hollow inside. Mount members 40a and 40a to be attached to the vehicle body are provided at the front end and the rear end of the left side member 40, respectively. The rear plate member 22 of the rear cross member 20 is joined to the upper rear plate member 42 by welding.

（サイドメンバ用制振用マスの構成）
図２に破線で示すように、サイドメンバ用制振用マス６０は、中空状の制振対象物としての右側サイドメンバ３０及び左側サイドメンバ４０のそれぞれに取り付けられ、右側サイドメンバ３０及び左側サイドメンバ４０の振動を抑制するためのものであり、その振動抑制原理は、本実施形態においては、リヤクロスメンバ２０の振動が大きくなる部位に制振用マス６０を一体的に固定して、ピーク周波数を有害な振動周波数からずらすものであり、例えばリヤクロスメンバ２０のピッチング振動を抑制する場合は、制振用マス６０をピッチング中心から離間して配置する。 (Structure of damping mass for side members)
As shown by the broken line in FIG. 2, the vibration damping mass 60 for the side member is attached to each of the right side member 30 and the left side member 40 as a hollow vibration damping object, and the right side member 30 and the left side side. The purpose is to suppress the vibration of the member 40, and the principle of suppressing the vibration is that, in the present embodiment, the vibration damping mass 60 is integrally fixed to the portion where the vibration of the rear cross member 20 becomes large, and the peak is reached. The frequency is shifted from the harmful vibration frequency. For example, when suppressing the pitching vibration of the rear cross member 20, the damping mass 60 is arranged away from the pitching center.

右側サイドメンバ３０に取り付けられるサイドメンバ用制振用マス６０と左側サイドメンバ４０に取り付けられるサイドメンバ用制振用マス６０は同じであるため、以下、右側サイドメンバ３０に取り付けられるサイドメンバ用制振用マス６０について詳細に説明する。 Since the side member damping mass 60 attached to the right side member 30 and the side member damping mass 60 attached to the left side member 40 are the same, the side member damping mass 60 attached to the right side member 30 will be described below. The diversion mass 60 will be described in detail.

サイドメンバ用制振用マス６０は右側サイドメンバ３０の内部に収容されるものであり、図４及び図５に示すように、複数のマス部材６１、６１、…と、該マス部材６１を右側サイドメンバ３０に取り付けるための金属製板材からなる一体物の取付部材６２とを備えている。尚、一体物としては、例えば１枚の板材をプレス成形して得たプレス成形品、鋳造品や鍛造品のような一体成形品、複数の部材を溶接やろう付けして一体化した接合品、複数の部材をリベットやボルト及びナットのような締結部材によって結合することによって一体化した結合品等を挙げることができる。 The vibration damping mass 60 for the side member is housed inside the right side member 30, and as shown in FIGS. 4 and 5, a plurality of mass members 61, 61, ... And the mass member 61 are placed on the right side. It is provided with an integral mounting member 62 made of a metal plate material for mounting on the side member 30. The integrated product includes, for example, a press-molded product obtained by press-molding one plate, an integrally molded product such as a cast product or a forged product, and a bonded product in which a plurality of members are welded or brazed to be integrated. , A bonded product integrated by connecting a plurality of members with fastening members such as rivets, bolts and nuts.

各マス部材６１は、金属製板材からなり、厚み方向に重ね合わされた状態で取付部材６２に固定されている。すなわち、各マス部材６１には、位置決め孔６１ａと固定用貫通孔６１ｂとが形成されており、マス部材６１、６１を重ね合わせると、マス部材６１、６１の固定用貫通孔６１ｂ同士が一致し、位置決め孔６１ａ同士も一致するようになっている。位置決め孔６１ａには図示しない位置決め用治具が挿入され、これにより複数のマス部材６１、６１、…が図５等に示すようにきれいに揃うようになる。一方、固定用貫通孔６１ｂには、柱状の金属製部材からなるかしめ部材６３が挿入されるようになっている。尚、マス部材６１の大きさや枚数は所望の周波数帯における制振効果を高めることができるように任意に設定することができる。 Each mass member 61 is made of a metal plate material and is fixed to the mounting member 62 in a state of being overlapped in the thickness direction. That is, each mass member 61 is formed with a positioning hole 61a and a fixing through hole 61b, and when the mass members 61 and 61 are overlapped with each other, the fixing through holes 61b of the mass members 61 and 61 coincide with each other. , The positioning holes 61a are also matched with each other. A positioning jig (not shown) is inserted into the positioning hole 61a so that the plurality of mass members 61, 61, ... Are neatly aligned as shown in FIG. 5 and the like. On the other hand, a caulking member 63 made of a columnar metal member is inserted into the fixing through hole 61b. The size and number of mass members 61 can be arbitrarily set so as to enhance the damping effect in a desired frequency band.

図４に示すように、取付部材６２には、第１固定部６２ａ及び第２固定部６２ｂが互いに間隔をあけて設けられている。図５に示すように、第１固定部６２ａ及び第２固定部６２ｂは、右側サイドメンバ３０の上側後半板材３２の上板部３２ａに沿って延びる板状をなしており、該上板部３２ａに固定される部分である。図３に示すように、第１固定部６２ａ及び第２固定部６２ｂはスポット溶接によって上板部３２ａに溶接される。符号６２ｆは第１固定部６２ａのスポット溶接部分を示し、符号６２ｇは第２固定部６２ｂのスポット溶接部分を示している。第１固定部６２ａ及び第２固定部６２ｂをスポット溶接することで、アーク溶接等に比べて上側後半板材３２の上板部３２ａの変形及び取付部材６２の変形が抑制される。 As shown in FIG. 4, the mounting member 62 is provided with a first fixing portion 62a and a second fixing portion 62b at intervals from each other. As shown in FIG. 5, the first fixing portion 62a and the second fixing portion 62b have a plate shape extending along the upper plate portion 32a of the upper rear half plate member 32 of the right side member 30, and the upper plate portion 32a. It is the part that is fixed to. As shown in FIG. 3, the first fixing portion 62a and the second fixing portion 62b are welded to the upper plate portion 32a by spot welding. Reference numeral 62f indicates a spot welded portion of the first fixed portion 62a, and reference numeral 62 g indicates a spot welded portion of the second fixed portion 62b. By spot welding the first fixing portion 62a and the second fixing portion 62b, the deformation of the upper plate portion 32a of the upper rear half plate member 32 and the deformation of the mounting member 62 are suppressed as compared with arc welding or the like.

図５に示すように、取付部材６２における第１固定部６２ａと第２固定部６２ｂとの間の部分である中間部６２ｃは、上側後半板材３２の上板部３２ａの内面から離れるように形成されている。これにより、第１固定部６２ａと第２固定部６２ｂを上側後半板材３２の上板部３２ａに固定した後に塗装を行う際に、中間部６２ｃと上板部３２ａとの間に塗料が入り込み易くなり、右側サイドメンバ３０と取付部材６２の塗装工程が容易になる。 As shown in FIG. 5, the intermediate portion 62c, which is a portion between the first fixing portion 62a and the second fixing portion 62b of the mounting member 62, is formed so as to be separated from the inner surface of the upper plate portion 32a of the upper rear plate member 32. Has been done. As a result, when painting is performed after fixing the first fixing portion 62a and the second fixing portion 62b to the upper plate portion 32a of the upper rear half plate material 32, the paint easily enters between the intermediate portion 62c and the upper plate portion 32a. Therefore, the painting process of the right side member 30 and the mounting member 62 becomes easy.

取付部材６２における第１固定部６２ａと中間部６２ｃとの間には、第１傾斜板部６２ｄが設けられている。この第１傾斜板部６２ｄは、第１固定部６２ａから中間部６２ｃまで延びるとともに、中間部６２ｃに近づくほど上板部３２ａの内面から離れるように傾斜している。また、取付部材６２における第２固定部６２ｂと中間部６２ｃとの間には、第２傾斜板部６２ｅが設けられている。この第２傾斜板部６２ｅは、第２固定部６２ｂから中間部６２ｃまで延びるとともに、中間部６２ｃに近づくほど上板部３２ａの内面から離れるように傾斜している。 A first inclined plate portion 62d is provided between the first fixing portion 62a and the intermediate portion 62c of the mounting member 62. The first inclined plate portion 62d extends from the first fixing portion 62a to the intermediate portion 62c, and is inclined so as to be separated from the inner surface of the upper plate portion 32a as it approaches the intermediate portion 62c. Further, a second inclined plate portion 62e is provided between the second fixing portion 62b and the intermediate portion 62c of the mounting member 62. The second inclined plate portion 62e extends from the second fixed portion 62b to the intermediate portion 62c, and is inclined so as to be separated from the inner surface of the upper plate portion 32a as it approaches the intermediate portion 62c.

そして、図５に示すように、第１固定部６２ａと第２固定部６２ｂは、上側後半板材３２の上板部３２ａにおけるリヤクロスメンバ２０の後側板材２２が接合される部分を跨ぐように配置されている。つまり、上板部３２ａにおけるリヤクロスメンバ２０の後側板材２２が接合される部分を挟むように、第１固定部６２ａと第２固定部６２ｂが配置されている。 Then, as shown in FIG. 5, the first fixing portion 62a and the second fixing portion 62b straddle the portion of the upper plate portion 32a of the upper rear half plate member 32 to which the rear side plate member 22 of the rear cross member 20 is joined. Have been placed. That is, the first fixing portion 62a and the second fixing portion 62b are arranged so as to sandwich the portion of the upper plate portion 32a to which the rear side plate member 22 of the rear cross member 20 is joined.

取付部材６２にはマス部材６１が厚み方向に重なるように配置されて固定されている。取付部材６２には、かしめ部材６３が挿通するようになっている。かしめ部材６３の頭部６３ａは取付部材６２におけるマス部材６１とは反対側の面に当接するように配置されており、この頭部６３ａは取付部材６２に対してマス部材６１とは反対側から係合するようになっている。 The mass member 61 is arranged and fixed to the mounting member 62 so as to overlap in the thickness direction. A caulking member 63 is inserted through the mounting member 62. The head 63a of the caulking member 63 is arranged so as to abut on the surface of the mounting member 62 opposite to the mass member 61, and the head 63a is arranged from the side opposite to the mass member 61 with respect to the mounting member 62. It is designed to engage.

また、かしめ部材６３における頭部６３ａとは反対側の端部には拡径部６３ｂが設けられている。この拡径部６３ｂは、全てのマス部材６１の固定用貫通孔６１ｂに挿通された後、重なり方向の端部に位置するマス部材６１の固定用貫通孔６１ｂから突出しており、この拡径部６３ｂには固定用貫通孔６１ｂへの挿通後にかしめ力が加えられ、これにより拡径部６３ｂが拡径方向に塑性変形して全てのマス部材６１を取付部材６２にかしめ固定することができるようになっている。これにより、マス部材６１が取付部材６２に対して該取付部材６２の中央部よりも第１固定部６２ａに近い部位及び第２取付部６２ｂに近い部位に剛体結合されている。 Further, a diameter-expanded portion 63b is provided at the end of the caulking member 63 on the side opposite to the head 63a. The diameter-expanded portion 63b is inserted into the fixing through holes 61b of all the mass members 61, and then protrudes from the fixing through holes 61b of the mass members 61 located at the ends in the overlapping direction. A caulking force is applied to 63b after insertion into the fixing through hole 61b, whereby the diameter-expanded portion 63b is plastically deformed in the diameter-expanding direction so that all mass members 61 can be caulked and fixed to the mounting member 62. It has become. As a result, the mass member 61 is rigidly coupled to the mounting member 62 to a portion closer to the first fixing portion 62a and a portion closer to the second mounting portion 62b than the central portion of the mounting member 62.

（フロントクロスメンバ用制振用マスの構成）
フロントクロスメンバ用制振用マス７０は、中空状の制振対象物としてのフロントクロスメンバ１０に取り付けられ、フロントクロスメンバ１０の振動を抑制するためのものである。 (Structure of damping mass for front cross member)
The vibration damping mass 70 for the front cross member is attached to the front cross member 10 as a hollow vibration damping object, and is for suppressing the vibration of the front cross member 10.

図１に破線で示すように、フロントクロスメンバ用制振用マス７０はフロントクロスメンバ１０の内部に収容されるものであり、図７に示すように複数のマス部材７１、７１、…と、該マス部材７１をフロントクロスメンバ１０に取り付けるための金属製板材からなる一体物の取付部材７２とを備えている。各マス部材７１は、サイドメンバ用制振用マス６０用のマス部材６１と同様に構成されており、位置決め孔７１ａと固定用貫通孔７１ｂとが形成されており、マス部材７１、７１を重ね合わせると、マス部材７１、７１の固定用貫通孔７１ｂ同士が一致し、位置決め孔７１ａ同士も一致するようになっている。固定用貫通孔７１ｂには、かしめ部材７３が挿入されるようになっている。 As shown by the broken line in FIG. 1, the vibration damping mass 70 for the front cross member is housed inside the front cross member 10, and as shown in FIG. 7, a plurality of mass members 71, 71, ... It includes an integral mounting member 72 made of a metal plate material for mounting the mass member 71 to the front cross member 10. Each mass member 71 is configured in the same manner as the mass member 61 for the vibration damping mass 60 for the side member, and the positioning hole 71a and the fixing through hole 71b are formed, and the mass members 71 and 71 are overlapped. When combined, the fixing through holes 71b of the mass members 71 and 71 coincide with each other, and the positioning holes 71a also coincide with each other. The caulking member 73 is inserted into the fixing through hole 71b.

図７に示すように、取付部材７２には、第１固定部７２ａ及び第２固定部７２ｂが互いに間隔をあけて設けられている。第１固定部７２ａ及び第２固定部７２ｂは、フロントクロスメンバ１０における前側板材１１の前板部１１ａに沿って延びる板状をなしており、該前板部１１ａに固定される部分である。図６に示すように、第１固定部７２ａ及び第２固定部７２ｂはスポット溶接によって前板部１１ａに溶接される。符号７２ｆは第１固定部７２ａのスポット溶接部分を示し、符号７２ｇは第２固定部７２ｂのスポット溶接部分を示している。 As shown in FIG. 7, the mounting member 72 is provided with a first fixing portion 72a and a second fixing portion 72b at intervals from each other. The first fixing portion 72a and the second fixing portion 72b have a plate shape extending along the front plate portion 11a of the front side plate member 11 in the front cross member 10, and are portions fixed to the front plate portion 11a. As shown in FIG. 6, the first fixing portion 72a and the second fixing portion 72b are welded to the front plate portion 11a by spot welding. Reference numeral 72f indicates a spot welded portion of the first fixed portion 72a, and reference numeral 72 g indicates a spot welded portion of the second fixed portion 72b.

取付部材７２における第１固定部７２ａと第２固定部７２ｂとの間の部分である中間部７２ｃ（図７に示す）は、前側板材１１の前板部１１ａの内面から離れるように形成されている。これにより、第１固定部７２ａと第２固定部７２ｂを前側板材１１の前板部１１ａに固定した後に塗装を行う際に、中間部７２ｃと前板部１１ａとの間に塗料が入り込み易くなり、フロントクロスメンバ用制振用マス７０と取付部材６２の塗装工程が容易になる。 The intermediate portion 72c (shown in FIG. 7), which is a portion between the first fixing portion 72a and the second fixing portion 72b of the mounting member 72, is formed so as to be separated from the inner surface of the front plate portion 11a of the front side plate member 11. There is. As a result, when painting is performed after fixing the first fixing portion 72a and the second fixing portion 72b to the front plate portion 11a of the front side plate material 11, the paint easily enters between the intermediate portion 72c and the front plate portion 11a. , The painting process of the vibration damping mass 70 for the front cross member and the mounting member 62 becomes easy.

サイドメンバ用制振用マス６０用の取付部材６２と同様に、取付部材７２における第１固定部７２ａと中間部７２ｃとの間、及び、取付部材７２における第２固定部７２ｂと中間部７２ｃとの間には、それぞれ、第１傾斜板部７２ｄ及び第２傾斜板部７２ｅが設けられている。また、サイドメンバ用制振用マス６０と同様に、マス部材７１が取付部材７２に対して、かしめ部材７３によって固定されている。 Similar to the mounting member 62 for the vibration damping mass 60 for the side member, between the first fixing portion 72a and the intermediate portion 72c of the mounting member 72, and between the second fixing portion 72b and the intermediate portion 72c of the mounting member 72. A first inclined plate portion 72d and a second inclined plate portion 72e are provided between them, respectively. Further, similarly to the vibration damping mass 60 for the side member, the mass member 71 is fixed to the mounting member 72 by the caulking member 73.

（実施形態の作用効果）
以上説明したように、この実施形態に係る制振用マスの取付構造によれば、サイドメンバ用制振用マス６０が右側サイドメンバ３０及び左側サイドメンバ４０の内部に収容された状態で右側サイドメンバ３０及び左側サイドメンバ４０に取り付けられるので、右側サイドメンバ３０及び左側サイドメンバ４０の内部が有効に利用されてスペース効率が向上する。また、フロントクロスメンバ用制振用マス７０はフロントクロスメンバ１０の内部に収容された状態でフロントクロスメンバ１０に取り付けられるので、フロントクロスメンバ１０の内部が有効に利用されてスペース効率が向上する。 (Action and effect of the embodiment)
As described above, according to the mounting structure of the vibration damping mass according to this embodiment, the vibration damping mass 60 for the side member is housed inside the right side member 30 and the left side member 40 on the right side. Since it is attached to the member 30 and the left side member 40, the inside of the right side member 30 and the left side member 40 is effectively used to improve space efficiency. Further, since the vibration damping mass 70 for the front cross member is attached to the front cross member 10 in a state of being housed inside the front cross member 10, the inside of the front cross member 10 is effectively used and space efficiency is improved. ..

そして、サイドメンバ用制振用マス６０の取付部材６１の第１固定部６２ａ及び第２固定部６２ｂが右側サイドメンバ３０に固定されると、これら第１固定部６２ａ及び第２固定部６２ｂが互いに離れているので、右側サイドメンバ３０の互いに離れた複数箇所が取付部材６２によって連結されることになる。このとき、取付部材６２が金属製板材からなる一体物であるため、取付部材６２によって右側サイドメンバ３０が補強される。つまり、マス部材６１を取り付けるための取付部材６２を利用して右側サイドメンバ３０を補強することが可能になるので、右側サイドメンバ３０に対して別に補強部材を設けたり、右側サイドメンバ３０の肉厚を厚くすることなく、右側サイドメンバ３０の剛性を高めることが可能になる。左側サイドメンバ４０及びフロントクロスメンバ１０も同様である。 Then, when the first fixing portion 62a and the second fixing portion 62b of the mounting member 61 of the vibration damping mass 60 for the side member are fixed to the right side member 30, the first fixing portion 62a and the second fixing portion 62b are fixed. Since they are separated from each other, a plurality of positions of the right side member 30 separated from each other are connected by the mounting member 62. At this time, since the mounting member 62 is an integral body made of a metal plate material, the right side member 30 is reinforced by the mounting member 62. That is, since it is possible to reinforce the right side member 30 by using the mounting member 62 for mounting the mass member 61, a reinforcing member may be separately provided for the right side member 30, or the meat of the right side member 30 may be provided. It is possible to increase the rigidity of the right side member 30 without increasing the thickness. The same applies to the left side member 40 and the front cross member 10.

また、取付部材６２における第１固定部６２ａと第２固定部６２ｂとの間の部分が右側サイドメンバ３０の内面から離れているので、塗装工程で塗料が右側サイドメンバ３０と取付部材６２との間に入り込み易くなり、塗装工程を容易にすることができる。左側サイドメンバ４０及びフロントクロスメンバ１０も同様である。 Further, since the portion of the mounting member 62 between the first fixing portion 62a and the second fixing portion 62b is separated from the inner surface of the right side member 30, the paint is applied to the right side member 30 and the mounting member 62 in the painting process. It becomes easy to get in between, and the painting process can be facilitated. The same applies to the left side member 40 and the front cross member 10.

また、マス部材６１を取付部材６２にかしめ固定するようにしたので、マス部材６１が取付部材６２に対して強固に一体化する。これにより、マス部材６１によって取付部材６２の剛性が高まり、その結果、取付部材６２による右側サイドメンバ３０の補強効果がより一層高まる。左側サイドメンバ４０及びフロントクロスメンバ１０も同様である。 Further, since the mass member 61 is crimped and fixed to the mounting member 62, the mass member 61 is firmly integrated with the mounting member 62. As a result, the mass member 61 increases the rigidity of the mounting member 62, and as a result, the reinforcing effect of the right side member 30 by the mounting member 62 is further enhanced. The same applies to the left side member 40 and the front cross member 10.

また、フロントクロスメンバ１０の前側板材１１の左右方向中央部の幅が左右両側に比べて狭いので、該中央部の剛性が低下し易くなるが、この中央部にフロントクロスメンバ用制振用マス７０の第１固定部７２ａと第２固定部７２ｂを固定することで、中央部が取付部材７２により補強されて全体の剛性を高めることができる。 Further, since the width of the central portion of the front side plate member 11 of the front cross member 10 in the left-right direction is narrower than that of the left and right sides, the rigidity of the central portion tends to decrease. By fixing the first fixing portion 72a and the second fixing portion 72b of the 70, the central portion is reinforced by the mounting member 72, and the overall rigidity can be increased.

また、右側サイドメンバ３０におけるリヤクロスメンバ２０が接合される部分を取付部材６２によって補強することができる。左側サイドメンバ４０も同様である。 Further, the portion of the right side member 30 to which the rear cross member 20 is joined can be reinforced by the mounting member 62. The same applies to the left side member 40.

（その他の実施形態）
上述の実施形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 (Other embodiments)
The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

上記実施形態では、フロントクロスメンバ１０と、右側サイドメンバ３０と、左側サイドメンバ４０制振用マスを取り付けるようにしたが、いずれか１つにのみ取り付けるようにしてもよい。 In the above embodiment, the front cross member 10, the right side member 30, and the left side member 40 vibration damping mass are attached, but it may be attached to only one of them.

また、例えば、図示しないが、リヤクロスメンバ２０の内部に制振用マスを収容して取り付けるようにしてもよい。 Further, for example, although not shown, the damping mass may be accommodated and attached inside the rear cross member 20.

また、中空状の自動車用部品として例えばフロントサスペンション装置のクロスメンバ等の内部に制振用マスを収容して取り付けるようにしてもよい。 Further, as a hollow automobile component, for example, a vibration damping mass may be accommodated and attached inside a cross member of a front suspension device or the like.

さらに、自動車用部品以外にも振動する中空状の部品の内部に制振用マスを収容して取り付けるようにしてもよい。 Further, in addition to the automobile parts, the vibration damping mass may be accommodated and attached inside the vibrating hollow parts.

また、上記実施形態では、取付部材に固定部を２つ設けた場合について説明したが、これに限らず、取付部材に固定部を３つ以上設けてもよい。 Further, in the above embodiment, the case where the mounting member is provided with two fixing portions has been described, but the present invention is not limited to this, and the mounting member may be provided with three or more fixing portions.

また、上記実施形態の制振用マスは、マス部材を取付部材に一体的に固定する構成とし、制振対象物であるサブフレームのピッチングにおけるピーク振動数を有害な振動周波数からずらすタイプであるが、抑制すべき振動周波数に対しダイナミックダンパを用いることが適するものであり、取付部材のみで十分な補強が可能であれば、ダイナミックダンパを用いてもよい。 Further, the vibration damping mass of the above embodiment is a type in which the mass member is integrally fixed to the mounting member, and the peak frequency in the pitching of the subframe, which is the vibration damping object, is shifted from the harmful vibration frequency. However, it is suitable to use a dynamic damper for the vibration frequency to be suppressed, and a dynamic damper may be used as long as sufficient reinforcement can be performed only by the mounting member.

以上説明したように、本発明に係る制振用マスの取付構造は、例えば自動車用部品等の内部に制振用マスを収容して取り付ける場合に利用することができる。 As described above, the mounting structure of the damping mass according to the present invention can be used, for example, when the damping mass is accommodated and mounted inside an automobile part or the like.

１サスペンション支持部材
１０フロントクロスメンバ（制振対象物）
３０右側サイドメンバ（制振対象物）
４０左側サイドメンバ（制振対象物）
６０サイドメンバ用制振用マス
６１マス部材
６２取付部材
６２ａ第１固定部
６２ｂ第２固定部
６３かしめ部材
７０フロントクロスメンバ用制振用マス
７１マス部材
７２取付部材
７２ａ第１固定部
７２ｂ第２固定部
７３かしめ部材 1 Suspension support member 10 Front cross member (vibration damping object)
30 Right side member (vibration control target)
40 Left side member (vibration control target)
60 Vibration damping mass for side members 61 Mass member 62 Mounting member 62a First fixing part 62b Second fixing part 63 Caulking member 70 Vibration damping mass for front cross member 71 Mass member 72 Mounting member 72a First fixing part 72b Second Fixing part 73 Caulking member

Claims

中空状の制振対象物に取り付けられる制振用マスの取付構造において、
上記制振用マスは、マス部材と、該マス部材を上記制振対象物に取り付けるための金属製板材からなる一体物の取付部材とを備え、該取付部材は１つであり、
上記取付部材には、互いに間隔をあけて第１固定部及び第２固定部が設けられ、
上記マス部材は、上記取付部材に対して、少なくとも上記取付部材の中央部よりも上記第１固定部に近い部位及び上記第２固定部に近い部位にそれぞれ剛体結合され、
上記制振用マスは、上記制振対象物の内部に収容されるとともに、上記第１固定部及び上記第２固定部が上記制振対象物に固定されることにより該制振対象物に取り付けられ、
上記取付部材の上記第１固定部及び上記第２固定部の離間方向の寸法は、上記マス部材の同方向の寸法よりも長く設定されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the damping mass that is attached to the hollow damping object,
The vibration damping mass includes a mass member and an integral mounting member made of a metal plate material for mounting the mass member on the vibration damping object, and the mounting member is one.
The mounting member is provided with a first fixing portion and a second fixing portion at intervals from each other.
The mass member is rigidly coupled to the mounting member at least at a portion closer to the first fixing portion and a portion closer to the second fixing portion than the central portion of the mounting member.
The vibration damping mass is housed inside the vibration damping object, and is attached to the vibration damping object by fixing the first fixing portion and the second fixing portion to the vibration damping object. Be ,
The mounting structure of the vibration damping mass, characterized in that the dimensions of the first fixing portion and the second fixing portion of the mounting member in the separation direction are set longer than the dimensions of the mass member in the same direction.

請求項１に記載の制振用マスの取付構造において、
上記取付部材における上記第１固定部と上記第２固定部との間の部分は、上記制振対象物から離れるように形成され、
上記制振対象物には塗装が施されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the vibration damping mass according to claim 1,
The portion of the mounting member between the first fixing portion and the second fixing portion is formed so as to be separated from the vibration damping object.
The mounting structure of the damping mass is characterized in that the above-mentioned damping object is painted.

請求項１または２に記載の制振用マスの取付構造において、
上記マス部材は、金属製板材が厚み方向に積層されてなり、上記取付部材に対してかしめ部材によりかしめ固定されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the damping mass according to claim 1 or 2.
Said mass member, Ri Na metal plate is laminated in the thickness direction, the mounting structure of the vibration damping mass, characterized in that it is caulked by the caulking member relative to the mounting member.

請求項３に記載の制振用マスの取付構造において、
上記マス部材は、上記制振対象物のピッチング中心から離間した部位に配設されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the vibration damping mass according to claim 3 ,
Said mass member, the mounting structure of the vibration damping mass, characterized in that it is disposed at a site spaced from the pitching center of the vibration damping target.

請求項１から４のいずれか１つに記載の制振用マスの取付構造において、
上記第１固定部と上記第２固定部は上記制振対象物にスポット溶接されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the vibration damping mass according to any one of claims 1 to 4,
The mounting structure of the damping mass is characterized in that the first fixing portion and the second fixing portion are spot-welded to the vibration damping object.

請求項１から５のいずれか１つに記載の制振用マスの取付構造において、
上記制振対象物は、金属製板材からなる自動車用部品であり、自動車の左右方向に長く延びるとともに左右方向中央部が屈曲して形成されるか、またはその幅が両側の幅に比べて狭く形成されており、
上記第１固定部と上記第２固定部は、上記制振対象物の左右方向中央部に固定されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the vibration damping mass according to any one of claims 1 to 5,
The vibration damping object is an automobile part made of a metal plate material, which extends long in the left-right direction of the automobile and is formed by bending the central portion in the left-right direction, or its width is narrower than the widths on both sides. Has been formed and
The first fixing portion and the second fixing portion are fixed to the central portion in the left-right direction of the vibration damping object, and have a vibration damping mass mounting structure.

請求項１から５のいずれか１つに記載の制振用マスの取付構造において、
上記制振対象物は、金属製板材からなる自動車用部品であり、
上記制振対象物には、別の部材が接合されており、
上記第１固定部と上記第２固定部は、上記制振対象物における上記別の部材が接合される部分を跨ぐように配置されて該制振対象物に固定されていることを特徴とする制振用マスの取付構造。 In the mounting structure of the vibration damping mass according to any one of claims 1 to 5,
The vibration damping target is an automobile part made of a metal plate material.
Another member is joined to the vibration damping object.
The first fixing portion and the second fixing portion are arranged so as to straddle a portion of the vibration damping object to which the other members are joined and are fixed to the vibration damping object. Mounting structure of damping mass.