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JP5657265B2 - Member fixing structure - Google Patents
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JP5657265B2 - Member fixing structure - Google Patents

Member fixing structure Download PDF

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JP5657265B2
JP5657265B2 JP2010082754A JP2010082754A JP5657265B2 JP 5657265 B2 JP5657265 B2 JP 5657265B2 JP 2010082754 A JP2010082754 A JP 2010082754A JP 2010082754 A JP2010082754 A JP 2010082754A JP 5657265 B2 JP5657265 B2 JP 5657265B2
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Japan
Prior art keywords
boss
base
base portion
ribs
fixing structure
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JP2010082754A
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JP2011214650A (en
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栄作 池亀
栄作 池亀
友幸 水沼
友幸 水沼
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TS Tech Co Ltd
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TS Tech Co Ltd
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Priority to JP2010082754A priority Critical patent/JP5657265B2/en
Priority to US13/074,770 priority patent/US8845228B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • B29C65/607—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7835—Positioning the parts to be joined, e.g. aligning, indexing or centring by using stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Description

本発明は、２つの部材をボスを介して固定するための部材の固定構造に関する。   The present invention relates to a member fixing structure for fixing two members via a boss.

従来、基部から突出するボスを有する第１部材と、ボスの先端が固定される基部を有する第２部材とを備えた部材の固定構造が知られている（特許文献１参照）。具体的に、この構造では、ボスの周囲に、ボスの補強用もしくは２つの部材の間隔を保持するスペーサ部として機能するためのリブが、基部とボスを繋ぐように放射状に形成されている。   2. Description of the Related Art Conventionally, a member fixing structure including a first member having a boss protruding from a base and a second member having a base to which the tip of the boss is fixed is known (see Patent Document 1). Specifically, in this structure, ribs for functioning as a spacer portion for reinforcing the boss or maintaining a distance between two members are radially formed around the boss so as to connect the base portion and the boss.

特開２００９−１６６７８２号公報JP 2009-166782 A

しかしながら、従来技術では、第１部材のボス付近に、ボスの軸方向に沿った荷重が第１部材側から第２部材側に向けて加わると、リブの根元（リブと基部の間の隅部）に応力が集中して第１部材に応力が集中するおそれがあったので、応力を確実に分散することが望まれていた。   However, in the related art, when a load along the axial direction of the boss is applied near the boss of the first member from the first member side toward the second member side, the root of the rib (the corner between the rib and the base) ) And the stress may concentrate on the first member, it has been desired to disperse the stress reliably.

そこで、本発明は、ボスの軸方向に荷重が加わった場合であっても、１つの部材に応力が集中するのを確実に抑えることができる部材の固定構造を提供することを目的とする。   Therefore, an object of the present invention is to provide a member fixing structure capable of reliably suppressing stress concentration on one member even when a load is applied in the axial direction of the boss.

前記した課題を解決するため、本発明は、基部から突出するボスを有する第１部材と、前記ボスの先端が固定される基部を有する第２部材とを備えた部材の固定構造であって、前記ボスの周囲に配置されて前記第１部材の基部と前記第２部材の基部との間隔を保持するスペーサ部が、前記第２部材の基部から突出して前記第１部材の基部に接触するように、前記第２部材に設けられている。前記第２部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、前記複数のリブと前記ボスとが非接触となっている。前記第２部材の基部には、前記ボスの先端を固定するための孔が形成され、前記ボスの先端は、前記第２部材の基部の孔を貫通して前記第２部材に熱溶着されている。 In order to solve the above-described problem, the present invention is a member fixing structure including a first member having a boss protruding from a base and a second member having a base to which a tip of the boss is fixed, A spacer portion disposed around the boss and maintaining a distance between the base portion of the first member and the base portion of the second member protrudes from the base portion of the second member and contacts the base portion of the first member. And provided on the second member. The spacer portion of the second member is a plurality of ribs that extend radially from the boss in a radial direction so as to support the boss from the surroundings, and the plurality of ribs and the boss are not in contact with each other. Yes. A hole for fixing the tip of the boss is formed in the base of the second member, and the tip of the boss penetrates the hole in the base of the second member and is thermally welded to the second member. Yes.

これによれば、第１部材のボス付近に軸方向に荷重が加わった場合であっても、その荷重が第２部材のスペーサ部を介して第２部材に伝達されるので、第１部材のみにスペーサ部がボスと一体に設けられる形態に比べ、第２部材に荷重を分散させて、第１部材に応力が集中するのを抑えることができる。 According to this , even when a load is applied in the axial direction in the vicinity of the boss of the first member, the load is transmitted to the second member via the spacer portion of the second member. Compared with the configuration in which the spacer portion is provided integrally with the boss, the load can be distributed to the second member, and the stress can be prevented from concentrating on the first member.

また、放射状のリブでボスが補強される（ボスの倒れが抑えられる）ので、ボスの剛性を高めることができる。 Further , since the boss is reinforced by the radial ribs (the boss is prevented from falling down), the rigidity of the boss can be increased.

なお、前記複数のリブは、他のリブで連結されていてもよい。
また、前記第１部材には、当該第１部材の基部から突出して前記第２部材の基部に接触するスペーサ部がさらに設けられ、前記第１部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、前記第２部材の複数のリブの間に配置されていてもよいし、前記他のリブと非接触であってもよい。
また、前記第２部材において径方向に延びる各リブの長さは、前記第１部材において径方向に延びる各リブの長さよりも長くてもよい。
また、前記第１部材には、当該第１部材の基部から突出して前記第２部材の基部に接触するスペーサ部がさらに設けられ、前記第１部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、前記第２部材のスペーサ部と前記第１部材の基部との接触面積が、前記第１部材のスペーサ部と前記第２部材の基部との接触面積よりも大きくなるように、各スペーサ部が形成されていてもよい。 The plurality of ribs may be connected by other ribs.
Further, the first member is further provided with a spacer portion that protrudes from the base portion of the first member and contacts the base portion of the second member, and the spacer portion of the first member is radially radiated from the boss. A plurality of ribs provided so as to support the boss from the periphery, and may be disposed between the plurality of ribs of the second member, or may not be in contact with the other ribs. Good.
The length of each rib extending in the radial direction in the second member may be longer than the length of each rib extending in the radial direction in the first member.
Further , the first member is further provided with a spacer portion that protrudes from the base portion of the first member and contacts the base portion of the second member, and the spacer portion of the first member is radially radiated from the boss. A plurality of ribs provided so as to support the boss from the periphery, and a contact area between the spacer portion of the second member and the base portion of the first member is set to be different from that of the first member. Each spacer part may be formed so that it may become larger than a contact area with the base part of 2 members.

これによれば、第１部材のスペーサ部よりも第２部材のスペーサ部が広い範囲で基部と接触するので、荷重を第２部材に分散させて、第１部材に応力が集中するのを抑えることができる。 According to this , since the spacer part of the second member is in contact with the base part in a wider range than the spacer part of the first member, the load is distributed to the second member, and stress concentration on the first member is suppressed. be able to.

また、前記第２部材の基部には、前記第２部材の前記スペーサ部よりも柔らかく、かつ、衝撃力を吸収する弾性変形可能な衝撃緩衝材が、前記第２部材の前記スペーサ部よりも外側に配置され、かつ、前記第１部材の基部に接触するように設けられていてもよい。 In addition , an elastically shock-resistant shock absorbing material that is softer than the spacer portion of the second member and absorbs an impact force is provided outside the spacer portion of the second member at the base portion of the second member. And may be provided so as to contact the base of the first member.

これによれば、衝撃緩衝材により荷重を吸収できるので、第１部材に応力が集中するのをより抑制することができる。 According to this , since the load can be absorbed by the shock absorbing material, it is possible to further suppress the stress concentration on the first member.

本発明によれば、第１部材のみにスペーサ部がボスと一体に設けられる形態に比べ、第２部材に荷重を分散させて、第１部材に応力が集中するのを抑えることができる。 According to the present invention, compared to a configuration in which the spacer portion is provided integrally with the boss only on the first member, it is possible to suppress the concentration of stress on the first member by dispersing the load on the second member.

また、本発明によれば、ボスの剛性を高めることができる。 Moreover, according to the present invention, the rigidity of the boss can be increased.

また、本発明における第２部材のスペーサ部と第１基材の基部との接触面積が第１部材のスペーサ部と第２部材の基部との接触面積よりも大きくなる構成によれば、荷重を第２部材に分散させて、第１部材に応力が集中するのを抑えることができる。 Further, according to the configuration the contact area between the spacer portion and the base portion of the first substrate of the second member definitive to the present invention is greater than the contact area between the spacer and the base of the second member of the first member, the load Can be dispersed in the second member to prevent stress from concentrating on the first member.

また、本発明における衝撃緩衝材を有する構成によれば、第１部材に応力が集中するのをより抑制することができる。 Further, according to the configuration having a shock absorbing material definitive to the present invention, it is possible to stress the first member is suppressed from concentrating.

本発明の一実施形態に係る部材の固定構造を示す分解斜視図である。It is a disassembled perspective view which shows the fixing structure of the member which concerns on one Embodiment of this invention. 図１の構造を下側から見た平面図（ａ）と、図２（ａ）のＩ−Ｉ線で切った断面図（ｂ）である。It is the top view (a) which looked at the structure of FIG. 1 from the lower side, and sectional drawing (b) cut | disconnected by the II line | wire of FIG. 2 (a). リブを円筒状にした形態を示す平面図（ａ）と、図３（ａ）のII−II線で切った断面図（ｂ）である。It is the top view (a) which shows the form which made the rib cylindrical, and sectional drawing (b) cut | disconnected by the II-II line of Fig.3 (a). 衝撃緩衝材を設けた形態を示す平面図（ａ）と、図４（ａ）のIII−III線で切った断面図であり、２つの部材を組み付ける前の状態を示す断面図（ｂ）と、組み付け後の状態を示す断面図（ｃ）である。The top view (a) which shows the form which provided the shock-absorbing material, It is sectional drawing cut | disconnected by the III-III line of Fig.4 (a), Sectional drawing (b) which shows the state before attaching two members, It is sectional drawing (c) which shows the state after an assembly | attachment. スペーサ部を折れ曲がった形状に形成する形態を示す平面図（ａ）と、図５（ａ）のＩＶ−ＩＶ線で切った断面図（ｂ）である。It is the top view (a) which shows the form which forms a spacer part in the shape bent, and sectional drawing (b) cut | disconnected by the IV-IV line of Fig.5 (a). 図５の第２延在部の変形例を示す断面図である。It is sectional drawing which shows the modification of the 2nd extension part of FIG. 第１部材と第２部材の両方にリブを設けた形態を示す図であり、第１部材を示す平面図（ａ）と、第２部材を示す平面図（ｂ）である。It is a figure which shows the form which provided the rib in both the 1st member and the 2nd member, and is the top view (a) which shows a 1st member, and the top view (b) which shows a 2nd member. 図７に示す第１部材と第２部材を組み付けた状態を示す平面図（ａ）と、図８（ａ）のＶ−Ｖ線で切った断面図（ｂ）である。It is the top view (a) which shows the state which assembled | attached the 1st member shown in FIG. 7, and the 2nd member, and sectional drawing (b) cut | disconnected by the VV line of Fig.8 (a). 図７（ｂ）に示す第２部材に新たなリブを追加した形態を示す図であり、第１部材を示す平面図（ａ）と、第２部材を示す平面図（ｂ）と、第１部材と第２部材を組み付けた状態を示す平面図（ｃ）である。It is a figure which shows the form which added the new rib to the 2nd member shown in FIG.7 (b), the top view (a) which shows a 1st member, the top view (b) which shows a 2nd member, and 1st It is a top view (c) which shows the state which assembled | attached the member and the 2nd member.

以下、図面を参照しながら、本発明の一実施形態について説明する。
図１に示すように、部材の固定構造Ｍは、板状の第１部材１と、板状の第２部材２とを備えている。なお、第１部材１や第２部材２としては、どのような部材を採用してもよく、例えばドアライニングや当該ドアライングに取り付けるアームレストなどの部材を採用することができる。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the member fixing structure M includes a plate-like first member 1 and a plate-like second member 2. In addition, as the 1st member 1 and the 2nd member 2, what kind of members may be employ | adopted, for example, members, such as a door lining and an armrest attached to the said door line, are employable.

第１部材１は、板状の基部１１と、基部１１から第２部材２に向けて突出するボス１２とを有している。   The first member 1 includes a plate-like base 11 and a boss 12 that protrudes from the base 11 toward the second member 2.

基部１１は、内部に複数の気泡を有する発泡樹脂材料１１ａと、当該発泡樹脂材料１１ａを挟み込む一対のスキン層１１ｂとで形成されている。なお、発泡樹脂材料１１ａとしては、どのような材料を採用してもよく、例えば発泡ポリプロピレンなどを採用することができる。   The base 11 is formed of a foamed resin material 11a having a plurality of bubbles therein and a pair of skin layers 11b that sandwich the foamed resin material 11a. In addition, as the foamed resin material 11a, any material may be employed, for example, foamed polypropylene or the like may be employed.

ボス１２は、一方（第２部材２側）のスキン層１１ｂに一体に形成されている。   The boss 12 is integrally formed with one (second member 2 side) skin layer 11b.

第２部材２は、樹脂で形成された板状の部材であり、板状の基部２１と、第１部材１の基部１１と第２部材２の基部２１との間隔を保持するスペーサ部の一例としての４つ（複数）のリブ２２とを有している。   The second member 2 is a plate-like member formed of resin, and an example of a spacer portion that maintains a distance between the plate-like base portion 21 and the base portion 11 of the first member 1 and the base portion 21 of the second member 2. And four (plural) ribs 22.

基部２１には、ボス１２の先端１２ａを固定するための孔２１ａが形成されている。具体的に、ボス１２の先端１２ａは、図２（ｂ）に示すように、基部２１の孔２１ａを貫通した後、加熱された治具で溶融されることで基部２１に固着される。   A hole 21 a for fixing the tip 12 a of the boss 12 is formed in the base portion 21. Specifically, as shown in FIG. 2 (b), the tip 12 a of the boss 12 passes through the hole 21 a of the base portion 21 and is then fixed to the base portion 21 by being melted by a heated jig.

リブ２２は、基部２１から突出して第１部材１の基部１１に接触することで第１部材１と第２部材２との間隔を保持しており、基部２１に一体に形成されている。リブ２２は、図２（ａ）および図１に示すように、各部材１，２を固定した際にボス１２の周囲に近接して配置されるようになっており、ボス１２から径方向に放射状（十字状）に延びるように形成されている。これにより、第１部材１のボス１２を第２部材２のリブ２２で補強して、ボス１２の剛性を高めることが可能となっている。   The rib 22 protrudes from the base portion 21 and comes into contact with the base portion 11 of the first member 1 to maintain the distance between the first member 1 and the second member 2 and is formed integrally with the base portion 21. As shown in FIG. 2A and FIG. 1, the rib 22 is arranged close to the periphery of the boss 12 when the members 1 and 2 are fixed. It is formed to extend radially (cross shape). Thereby, the boss 12 of the first member 1 can be reinforced by the ribs 22 of the second member 2 to increase the rigidity of the boss 12.

すなわち、本実施形態では、２つの部材１，２の間隔を保持するとともに、ボス１２の補強を兼ねるリブ２２が、従来のようにボス１２を有する第１部材１に設けられるのではなく、ボス１２がない方の第２部材２に設けられている。これにより、図２（ｂ）に矢印で示すように、第１部材１側から第２部材２側に向けて第１部材１のボス１２付近に軸方向に衝突荷重が加わった場合に、第１部材１の基部１１がボス１２を中心に下側（第２部材２側）に凹むように撓んだ場合であっても、第１部材１にリブ２２が固定されていないことより、リブ２２と第１部材１の基部１１との間の隅部に応力が集中することがなく、第２部材２に荷重を分散させることができる。   That is, in the present embodiment, the rib 22 that maintains the distance between the two members 1 and 2 and also serves as the reinforcement of the boss 12 is not provided in the first member 1 having the boss 12 as in the prior art. It is provided on the second member 2 that does not have 12. As a result, as shown by an arrow in FIG. 2B, when a collision load is applied in the axial direction near the boss 12 of the first member 1 from the first member 1 side to the second member 2 side, Even when the base 11 of the one member 1 is bent so as to be recessed downward (second member 2 side) around the boss 12, the rib 22 is not fixed to the first member 1. The stress is not concentrated at the corner between the base 22 and the base 11 of the first member 1, and the load can be distributed to the second member 2.

すなわち、従来のようにボスとリブと基部が一体に第１部材に形成されていると、衝突荷重によりボスとリブが第２部材側に移動するとともに基部が凹状に撓むときに、形状変化の大きい部分であるリブと基部との間の隅部（接続部）に応力が集中して加わる。これに対し、本実施形態では、第１部材１にはリブがないので、形状変化が大きくなるところがなく、第１部材１に応力が集中し難くなっている。   That is, if the boss, rib, and base are integrally formed on the first member as in the prior art, the shape changes when the boss and rib move toward the second member due to a collision load and the base bends in a concave shape. Stress is concentrated and applied to the corner (connecting portion) between the rib and the base, which is a large portion. On the other hand, in the present embodiment, since the first member 1 has no ribs, the shape change does not become large, and the stress is difficult to concentrate on the first member 1.

さらに、第２部材２に設けられたリブ２２は、ボス１２と一体になっていないので、仮に第２部材２が孔２１ａの付近で撓んだとしても、リブ２２はボス１２に拘束されることなく自由に向きを変えることができる。そのため、リブ２２の根元に応力集中することが抑制される。   Further, since the rib 22 provided on the second member 2 is not integrated with the boss 12, even if the second member 2 is bent near the hole 21 a, the rib 22 is restrained by the boss 12. You can freely change the direction without having to. Therefore, stress concentration at the base of the rib 22 is suppressed.

以上により、ボス１２の軸方向に荷重が加わった場合であっても、１つの部材に応力が集中するのを確実に抑えることができる。   As described above, even when a load is applied in the axial direction of the boss 12, it is possible to reliably suppress stress concentration on one member.

以上に本発明の実施形態について説明したが、本発明は、以下の他の形態に示すように、適宜変形して実施することが可能である。なお、以下の説明では、前記実施形態と略同様の構成要素については、同一符号を付し、その説明を省略することとする。   Although the embodiments of the present invention have been described above, the present invention can be implemented with appropriate modifications as shown in other embodiments below. In the following description, components that are substantially the same as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

前記実施形態では、スペーサ部として放射状のリブ２２を採用したが、本発明はこれに限定されず、例えば図３（ａ），（ｂ）に示すように、円筒状のリブ２３を採用してもよい。具体的に、このリブ２３は、ボス１２から離れた位置で当該ボス１２を囲うように形成されている。この構造では、リブ２３をボス１２に近接させないため、リブ２３のボス１２との位置精度を厳密に管理する必要がなく、各部材１，２Ａの組み付けを容易にすることができる。   In the above embodiment, the radial ribs 22 are used as the spacer portion. However, the present invention is not limited to this, and for example, as shown in FIGS. 3A and 3B, the cylindrical ribs 23 are used. Also good. Specifically, the rib 23 is formed so as to surround the boss 12 at a position away from the boss 12. In this structure, since the rib 23 is not brought close to the boss 12, it is not necessary to strictly manage the positional accuracy of the rib 23 with the boss 12, and the assembly of the members 1 and 2A can be facilitated.

また、図４（ａ）〜（ｃ）に示すように、リブ２３とは別に、リブ２３よりも柔らかく、かつ、衝撃力を吸収する弾性変形可能な衝撃緩衝材の一例としてのスポンジ２４を第２部材２Ｂの基部２１に設けてもよい。なお、衝撃緩衝材としては、ゴムやバネなどの部材を採用してもよい。   Further, as shown in FIGS. 4A to 4C, apart from the rib 23, a sponge 24, which is softer than the rib 23 and elastically deformable and absorbs an impact force, is used as a first example. You may provide in the base 21 of 2 member 2B. A member such as rubber or a spring may be adopted as the shock absorbing material.

具体的に、スポンジ２４は、円筒状のリブ２３の径方向外側に離れて配置される円筒状に形成されており、図４（ｂ）に示すように、リブ２３よりも高くなるように（第１部材１側に突出するように）形成されている。これにより、図４（ｃ）に示すように、各部材１，２Ｂを固定した際には、スポンジ２４が第１部材１の基部１１に確実に接触するようになっている。   Specifically, the sponge 24 is formed in a cylindrical shape that is spaced apart radially outward of the cylindrical rib 23 and is higher than the rib 23 as shown in FIG. It is formed so as to protrude toward the first member 1 side. As a result, as shown in FIG. 4C, when the members 1 and 2B are fixed, the sponge 24 is surely in contact with the base 11 of the first member 1.

この構造によれば、第１部材１のボス１２付近に加わった衝撃荷重をスポンジ２４で吸収することができるので、第１部材１に応力が集中するのをより抑制することができる。なお、スポンジ２４の形状やリブ２３の形状は、円筒状に限定されず、任意に様々な形状を採用できる。   According to this structure, since the impact load applied to the vicinity of the boss 12 of the first member 1 can be absorbed by the sponge 24, it is possible to further suppress stress concentration on the first member 1. The shape of the sponge 24 and the shape of the rib 23 are not limited to a cylindrical shape, and various shapes can be arbitrarily adopted.

また、図５（ａ），（ｂ）に示すように、第２部材２Ｃのスペーサ部２５を、板状の基部２６から第１部材１に向けて折れ曲がって延びる第１延在部２５１と、第１延在部２５１の先端から折れ曲がって延びる第２延在部２５２とで構成してもよい。   Further, as shown in FIGS. 5A and 5B, the spacer portion 25 of the second member 2C is bent from the plate-like base portion 26 toward the first member 1 and extends to the first member 251. You may comprise with the 2nd extension part 252 bent and extended from the front-end | tip of the 1st extension part 251. FIG.

具体的に、第１延在部２５１は、ボス１２が固定される部位である基部２６から第１部材１に向かう程、ボス１２の径方向外側に拡径するように延びている。そのため、第１延在部を円筒状（ボス１２の軸方向に平行な円筒状）に形成するものに比べ、第１延在部２５１が基部２６との接続部を中心に曲げ変形可能となるので、衝撃荷重を吸収することができる。   Specifically, the first extending portion 251 extends so as to increase in diameter toward the outer side in the radial direction of the boss 12 toward the first member 1 from the base portion 26 where the boss 12 is fixed. Therefore, the first extending portion 251 can be bent and deformed around the connection portion with the base portion 26 as compared with the first extending portion formed in a cylindrical shape (cylindrical shape parallel to the axial direction of the boss 12). Therefore, an impact load can be absorbed.

また、第２延在部２５２は、第１部材１の基部１１に沿うようにボス１２から離れる方向（径方向外側）に折れ曲がって延び、当該第１部材１の基部１１に面接触している。そのため、折れ曲がった第２延在部２５２の広い面で荷重を受けることができるので、より大きな荷重を第２部材２Ｃに分散することができる。   Further, the second extending portion 252 is bent and extends in a direction away from the boss 12 (radially outward) along the base portion 11 of the first member 1, and is in surface contact with the base portion 11 of the first member 1. . Therefore, since the load can be received on the wide surface of the bent second extending portion 252, a larger load can be distributed to the second member 2C.

なお、第２延在部２５２を、図６に示すように、その先端部２５２Ａが基部１１から離れるように反らせて形成してもよい。これによれば、第２延在部２５２の先端部２５２Ａ（エッジ部）が基部１１に接触しないので、先端部２５２Ａで基部１１を傷つけることを防止することができる。   In addition, you may form the 2nd extension part 252 so that the front-end | tip part 252A may be warped so that it may leave | separate from the base 11, as shown in FIG. According to this, since the front end portion 252A (edge portion) of the second extending portion 252 does not contact the base portion 11, it is possible to prevent the base portion 11 from being damaged by the front end portion 252A.

前記実施形態では、第２部材２にのみリブ２２（スペーサ部）を設けたが、本発明はこれに限定されず、例えば図７（ａ），（ｂ）に示すように、第２部材２にリブ２２を設けた上で、第１部材１Ｄにも、第１部材１Ｄと第２部材２との間隔を保持するリブ１７（スペーサ部）を設けてもよい。   In the above-described embodiment, the rib 22 (spacer portion) is provided only on the second member 2, but the present invention is not limited to this. For example, as shown in FIGS. 7 (a) and 7 (b), the second member 2 is provided. In addition, the first member 1D may be provided with ribs 17 (spacer portions) that maintain the distance between the first member 1D and the second member 2 after the ribs 22 are provided on the first member 1D.

具体的に、第１部材１Ｄのリブ１７は、図８（ａ），（ｂ）に示すように、第１部材１Ｄの基部１１から第２部材２側に突出して第２部材２の基部２１に接触することで、第１部材１Ｄと第２部材２との間隔を保持している。また、リブ１７は、ボス１２の周囲に４つ配置されており、ボス１２から径方向に十字状（詳しくはリブ２２とは異なる方向）に延びるようにボス１２と基部１１とに一体に形成されている。これにより、リブ１７によってボス１２が強固に補強されている。   Specifically, as shown in FIGS. 8A and 8B, the rib 17 of the first member 1D protrudes from the base 11 of the first member 1D toward the second member 2 and protrudes from the base 21 of the second member 2. The distance between the first member 1D and the second member 2 is maintained. Four ribs 17 are arranged around the boss 12 and are formed integrally with the boss 12 and the base portion 11 so as to extend in a radial shape from the boss 12 in a cross shape (specifically, a direction different from the rib 22). Has been. Thereby, the boss 12 is strongly reinforced by the rib 17.

そして、図８（ａ）に示すように、第２部材２のリブ２２は、第１部材１Ｄのリブ１７よりも幅広で、かつ、径方向に長く形成されている。すなわち、第２部材２のリブ２２と第１部材１Ｄの基部１１との接触面積が、第１部材１Ｄのリブ１７と第２部材２の基部２１との接触面積よりも大きくなるように、各リブ１７，２２が形成されている。   And as shown to Fig.8 (a), the rib 22 of the 2nd member 2 is wider than the rib 17 of 1st member 1D, and is formed long in radial direction. That is, each contact area between the rib 22 of the second member 2 and the base portion 11 of the first member 1D is larger than the contact area between the rib 17 of the first member 1D and the base portion 21 of the second member 2. Ribs 17 and 22 are formed.

この構造によれば、第１部材１Ｄのリブ１７よりも第２部材２のリブ２２が広い範囲で相手部品（基部１１）と接触するので、より大きな荷重を第２部材２に分散させることができる。   According to this structure, since the rib 22 of the second member 2 is in contact with the counterpart component (base 11) in a wider range than the rib 17 of the first member 1D, a larger load can be distributed to the second member 2. it can.

さらに、図９（ａ）〜（ｃ）に示すように、図８の形態における４つのリブ２２を、矩形の筒状のリブ２７で一体に繋ぎ合わせてもよい。これによれば、各リブ２２の剛性が高くなるので、第１部材１Ｄと第２部材２Ｅとの間隔の保持やボス１２の補強をより確実に行うことができる。また、矩形のリブ２７を各リブ２２と同じ高さで形成することで、リブ２２，２７と第１部材１Ｄの基部１１との接触面積がより大きくなるので、より大きな荷重を第２部材２Ｅに分散させることができる。   Further, as shown in FIGS. 9A to 9C, the four ribs 22 in the form of FIG. 8 may be integrally connected by a rectangular tubular rib 27. According to this, since the rigidity of each rib 22 becomes high, the space | interval of 1st member 1D and 2nd member 2E and the reinforcement | strengthening of the boss | hub 12 can be performed more reliably. Further, by forming the rectangular ribs 27 at the same height as the ribs 22, the contact area between the ribs 22 and 27 and the base portion 11 of the first member 1D becomes larger, so a larger load is applied to the second member 2E. Can be dispersed.

なお、スペーサ部の構造は、前記実施形態に限定されず、例えば基部とは別個の部材を接着剤等で固着して基部と一体にすることでスペーサ部を構成してもよい。また、スペーサ部の形状や数は、前記実施形態に限定されず、例えば円柱や多角柱など様々な形状のスペーサ部を１本もしくは複数本設けて構成してもよい。   Note that the structure of the spacer portion is not limited to the above-described embodiment. For example, the spacer portion may be configured by fixing a member separate from the base portion with an adhesive or the like so as to be integrated with the base portion. Further, the shape and number of the spacer portions are not limited to the above embodiment, and for example, one or a plurality of spacer portions having various shapes such as a cylinder or a polygonal column may be provided.

前記実施形態では、ボス１２の先端１２ａを溶かしてカシめることで第２部材２の基部２１に固定させたが、本発明はこれに限定されず、例えばボスを第２部材の基部にネジによって締結することで固定してもよい。   In the above embodiment, the tip 12a of the boss 12 is melted and caulked to be fixed to the base 21 of the second member 2. However, the present invention is not limited to this. For example, the boss is screwed to the base of the second member. You may fix by fastening by.

なお、前記実施形態では、基部１１を発泡樹脂材料１１ａで形成したが、本発明はこれに限定されず、非発泡のポリプロピレンのような樹脂材料で形成してもよい。ただし、前記実施形態のように発泡樹脂材料１１ａを使用した場合には、軽量化を図ることができるが、荷重が加わったときの強度が発泡しない樹脂材料よりも劣る分、本発明の効果による強度向上が特に有効となっている。   In the embodiment, the base 11 is formed of the foamed resin material 11a. However, the present invention is not limited to this, and the base 11 may be formed of a resin material such as non-foamed polypropylene. However, when the foamed resin material 11a is used as in the above-described embodiment, the weight can be reduced. However, the strength of the resin material when the load is applied is inferior to the resin material that does not foam. Strength improvement is particularly effective.

１ 第１部材
２ 第２部材
１１ 基部
１２ ボス
１２ａ 先端
２１ 基部
２２ リブ
Ｍ 部材の固定構造
DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 11 Base 12 Boss 12a Tip 21 Base 22 Rib M Member fixing structure

Claims (7)

基部から突出するボスを有する第１部材と、
前記ボスの先端が固定される基部を有する第２部材とを備えた部材の固定構造であって、
前記ボスの周囲に配置されて前記第１部材の基部と前記第２部材の基部との間隔を保持するスペーサ部が、前記第２部材の基部から突出して前記第１部材の基部に接触するように、前記第２部材に設けられ、
前記第２部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、
前記複数のリブと前記ボスとが非接触であり、
前記第２部材の基部には、前記ボスの先端を固定するための孔が形成され、
前記ボスの先端は、前記第２部材の基部の孔を貫通して前記第２部材に熱溶着されていることを特徴とする部材の固定構造。 A first member having a boss protruding from the base;
A member fixing structure including a second member having a base to which a tip of the boss is fixed,
A spacer portion disposed around the boss and maintaining a distance between the base portion of the first member and the base portion of the second member protrudes from the base portion of the second member and contacts the base portion of the first member. Provided to the second member,
The spacer portion of the second member is a plurality of ribs extending radially from the boss in a radial direction and provided to support the boss from the surroundings,
Wherein the plurality of ribs and said boss Ri contactless der,
The base of the second member is formed with a hole for fixing the tip of the boss,
The member fixing structure , wherein the tip of the boss penetrates the hole of the base of the second member and is heat-welded to the second member . 前記複数のリブは、他のリブで連結されていることを特徴とする請求項１に記載の部材の固定構造。   The member fixing structure according to claim 1, wherein the plurality of ribs are connected by other ribs. 前記第１部材には、当該第１部材の基部から突出して前記第２部材の基部に接触するスペーサ部がさらに設けられ、
前記第１部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、前記第２部材の複数のリブの間に配置されていることを特徴とする請求項１または請求項２に記載の部材の固定構造。 The first member further includes a spacer portion that protrudes from the base portion of the first member and contacts the base portion of the second member,
The spacer portion of the first member is a plurality of ribs that extend radially from the boss in a radial direction so as to support the boss from the periphery, and is disposed between the plurality of ribs of the second member. The member fixing structure according to claim 1, wherein the member fixing structure is provided. 前記第１部材には、当該第１部材の基部から突出して前記第２部材の基部に接触するスペーサ部がさらに設けられ、
前記第１部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、前記他のリブと非接触であることを特徴とする請求項２に記載の部材の固定構造。 The first member further includes a spacer portion that protrudes from the base portion of the first member and contacts the base portion of the second member,
The spacer portion of the first member is a plurality of ribs extending radially from the boss in a radial direction so as to support the boss from the periphery, and is not in contact with the other ribs. The member fixing structure according to claim 2. 前記第２部材において径方向に延びる各リブの長さは、前記第１部材において径方向に延びる各リブの長さよりも長いことを特徴とする請求項３または請求項４に記載の部材の固定構造。   The length of each rib extending radially in the second member is longer than the length of each rib extending radially in the first member. Construction. 前記第１部材には、当該第１部材の基部から突出して前記第２部材の基部に接触するスペーサ部がさらに設けられ、
前記第１部材のスペーサ部は、前記ボスから径方向に放射状に延びて、前記ボスを周囲から支えるように設けられる複数のリブであり、
前記第２部材のスペーサ部と前記第１部材の基部との接触面積が、前記第１部材のスペーサ部と前記第２部材の基部との接触面積よりも大きくなるように、各スペーサ部が形成されていることを特徴とする請求項１または請求項２に記載の部材の固定構造。 The first member further includes a spacer portion that protrudes from the base portion of the first member and contacts the base portion of the second member,
The spacer portion of the first member is a plurality of ribs extending radially from the boss in a radial direction and provided to support the boss from the surroundings,
Each spacer portion is formed such that the contact area between the spacer portion of the second member and the base portion of the first member is larger than the contact area between the spacer portion of the first member and the base portion of the second member. The member fixing structure according to claim 1, wherein the member fixing structure is provided. 前記第２部材の基部には、前記第２部材の前記スペーサ部よりも柔らかく、かつ、衝撃力を吸収する弾性変形可能な衝撃緩衝材が、前記第２部材の前記スペーサ部よりも外側に配置され、かつ、前記第１部材の基部に接触するように設けられていることを特徴とする請求項１〜請求項６のいずれか１項に記載の部材の固定構造。   At the base of the second member, an elastically deformable shock absorbing material that is softer than the spacer portion of the second member and absorbs an impact force is disposed outside the spacer portion of the second member. The member fixing structure according to claim 1, wherein the member fixing structure is provided so as to be in contact with a base portion of the first member.
JP2010082754A 2010-03-31 2010-03-31 Member fixing structure Expired - Fee Related JP5657265B2 (en)

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