JPS6245934Y2 - - Google Patents
Info
- Publication number
- JPS6245934Y2 JPS6245934Y2 JP1982037670U JP3767082U JPS6245934Y2 JP S6245934 Y2 JPS6245934 Y2 JP S6245934Y2 JP 1982037670 U JP1982037670 U JP 1982037670U JP 3767082 U JP3767082 U JP 3767082U JP S6245934 Y2 JPS6245934 Y2 JP S6245934Y2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- housing
- absorbing cover
- transmission housing
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Arrangement Of Transmissions (AREA)
Description
【考案の詳細な説明】
この考案は自動車用トランスミツシヨンハウジ
ングの改良に関する。[Detailed Description of the Invention] This invention relates to an improvement of a transmission housing for an automobile.
トランスミツシヨン１は例えば第１図に示すよ
うなものがある（例えば実開昭56−150821号公
報）。これはベルマウス部２ａおよびギヤケース
部２ｂからなるハウジング２を有し、上記ベルマ
ウス部２ａの前端開口縁がシリンダブロツク３の
後端にボルト４により結合されており、このハウ
ジング２は一般に軽量なアルミニウム合金鋳物に
て形成されている。 For example, there is a transmission 1 as shown in FIG. 1 (for example, Japanese Utility Model Application Publication No. 150821/1983). This has a housing 2 consisting of a bell mouth part 2a and a gear case part 2b, and the front opening edge of the bell mouth part 2a is connected to the rear end of a cylinder block 3 by a bolt 4. It is made of aluminum alloy casting.
従つてシリンダブロツク３側から伝達される加
振入力によつて、上記ハウジング２が膜振動し、
あるいはベルマウス部２ａ開口部が開閉振動し
て、極めて高いレベルの騒音が発生する欠点があ
る。ちなみに現状では、エンジン騒音全体の中
で、このトランスミツシヨンハウジング２から発
生する騒音の占める割合は約25％もの高率であ
り、自動車騒音の低減を図る上で大きな課題とな
つている。 Therefore, due to the vibration input transmitted from the cylinder block 3 side, the housing 2 vibrates, and
Alternatively, there is a drawback that the opening of the bell mouth portion 2a vibrates when opening and closing, producing an extremely high level of noise. Incidentally, at present, the noise generated from the transmission housing 2 accounts for approximately 25% of the total engine noise, making it a major issue in reducing vehicle noise.
なお、従来、トランスミツシヨンハウジング２
のベルマウス部２ａを、骨格となるフレームとゴ
ム等の防振カバーとで構成した例（実開昭55−
127622号公報）もあるが、油密性の確保や防振カ
バーの耐久性確保が困難である。 In addition, conventionally, transmission housing 2
An example in which the bell mouth part 2a of 2008 is composed of a frame serving as a skeleton and a vibration-proof cover made of rubber etc.
127622), but it is difficult to ensure oil-tightness and durability of the anti-vibration cover.
この考案は上記のような従来の欠点に鑑みてな
されたもので、トランスミツシヨンハウジングに
突設した位置決め用の突起に係合する係合孔を有
し、かつ両端部がクリツプにより互いに連結され
て略筒状となる吸音性カバーを用いて、上記トラ
ンスミツシヨンハウジング外表面を覆うととも
に、この吸音性カバー内周面に複数の突起を形成
してトランスミツシヨンハウジング外表面との間
に空気層を設けた構成により、自動車用トランス
ミツシヨンからの騒音発生を抑制することを目的
とする。 This idea was made in view of the above-mentioned drawbacks of the conventional transmission housing, and has an engagement hole that engages with a positioning protrusion protruding from the transmission housing, and both ends are connected to each other by clips. A substantially cylindrical sound-absorbing cover is used to cover the outer surface of the transmission housing, and a plurality of protrusions are formed on the inner peripheral surface of the sound-absorbing cover to prevent air from forming between the outer surface of the transmission housing and the outer surface of the transmission housing. The purpose of this layered structure is to suppress noise generation from automotive transmissions.
以下、この考案の一実施例を図面に基づいて詳
細に説明する。 Hereinafter, one embodiment of this invention will be described in detail based on the drawings.
第２図はこの考案に係る自動車用トランスミツ
シヨン１′を示すもので、ベルマウス部２ａおよ
びギヤケース部２ｂからなるハウジング２の外表
面を、吸音性カバー１１によつて覆つてある。上
記吸音性カバー１１は、可撓性を有するシート状
の吸音材からなり、ハウジング２の形状に沿つて
予め成形され、かつ筒状のものを一箇所で切り離
して展開した形となつている。この切り離された
一端部には、トランスミツシヨンハウジング２に
突設した位置決め用の突起１２に係合可能な係合
孔１３を有し、かつ他端部の端縁には、この切り
離された両端部を連結するためのクリツプ１４が
予め取り付けられている。すなわち、上記吸音性
カバー１１は、その係合孔１３をハウジング２の
突起１２に係合させた上でハウジング２に巻き付
け、両端部をクリツプ１４にて連結することによ
つて、ハウジング２に取り付けられるのである。
上記クリツプ１４は例えば金属板にて形成され、
第３図に示すように、基端係止爪１４ａを吸音性
カバー１１のスリツトに通して折り曲げることに
よつて該カバー１１の一方の端部に予め固定して
おき、ハウジング２に巻き付けた後に、先端係止
爪１４ｂをカバー１１の他方の端部のスリツトに
通して折り曲げるようにしている。尚、合成樹脂
製クリツプを用いる場合には、吸音性カバー１１
に熱融着させるようにしても良い。そして、上記
吸音性カバー11の内周面には、ハウジング２と接
する複数の突起１５が形成されており、この突起
１５の介在により、ハウジング２外表面と吸音性
カバー１１内周面との間に空気層１６が保持され
ている。 FIG. 2 shows an automobile transmission 1' according to this invention, in which the outer surface of a housing 2 consisting of a bell mouth portion 2a and a gear case portion 2b is covered with a sound absorbing cover 11. The sound-absorbing cover 11 is made of a flexible sheet-like sound-absorbing material, is pre-formed along the shape of the housing 2, and has a cylindrical shape that is separated at one point and expanded. This separated end has an engagement hole 13 that can be engaged with a positioning protrusion 12 protruding from the transmission housing 2, and the edge of the other end has an engagement hole 13 that can be engaged with a positioning projection 12 protruding from the transmission housing 2. A clip 14 for connecting both ends is attached in advance. That is, the sound absorbing cover 11 is attached to the housing 2 by engaging the engagement hole 13 with the protrusion 12 of the housing 2, wrapping it around the housing 2, and connecting both ends with the clips 14. It will be done.
The clip 14 is made of a metal plate, for example,
As shown in FIG. 3, the proximal locking claw 14a is passed through a slit in the sound-absorbing cover 11 and fixed to one end of the cover 11 by bending, and after being wrapped around the housing 2, The end locking claw 14b is passed through a slit at the other end of the cover 11 and bent. In addition, when using a synthetic resin clip, the sound absorbing cover 11
It may also be thermally fused to. A plurality of protrusions 15 are formed on the inner circumferential surface of the sound-absorbing cover 11 and are in contact with the housing 2, and the interposition of the protrusions 15 creates a gap between the outer surface of the housing 2 and the inner circumferential surface of the sound-absorbing cover 11. An air layer 16 is held in the space.
上記吸音性カバー１１に適する吸音材として
は、例えば有機あるいは無機繊維に合成樹脂を配
合して加熱加圧成形したもの、ポリウレタン、ポ
リエチレン等の合成樹脂発泡体、あるいはグラス
ウール等が挙げられる。尚、合成樹脂発泡体のよ
うに熱的影響を受け易いものの場合には、排気系
等に近接する部位にアルミニウム等金属箔を表面
に貼着して輻射熱を防ぐようにすることが好まし
い。また、同様に必要に応じて、吸音材の表面に
ゴム膜あるいは合成樹脂膜を設けて、水、油等か
ら保護するようにしてある。 Examples of sound absorbing materials suitable for the sound absorbing cover 11 include organic or inorganic fibers mixed with synthetic resin and molded under heat and pressure, synthetic resin foams such as polyurethane and polyethylene, and glass wool. In the case of a synthetic resin foam that is easily affected by heat, it is preferable to attach metal foil such as aluminum to the surface of the material near the exhaust system to prevent radiant heat. Similarly, if necessary, a rubber film or a synthetic resin film is provided on the surface of the sound absorbing material to protect it from water, oil, etc.
このように吸音性カバー１１を設けた構成によ
れば、トランスミツシヨンハウジング２の膜振動
あるいは開閉振動に伴い該ハウジング２表面から
放射される音を上記吸音性カバー１１が遮音かつ
吸音し、車内ならびに車外における騒音レベルを
大幅に低減する。特に、吸音性カバー１１内周面
とハウジング２外表面との間に空気層１６が形成
されているので、一層優れた騒音低減効果が得ら
れる。そして、この空気層１６は、吸音性カバー
１１に設けた突起１５によつて形成されるもので
あるから、ハウジング２側には特に加工を施す必
要がなく、極めて容易に必要な空気層１６が確保
できる。 According to the structure in which the sound-absorbing cover 11 is provided in this manner, the sound-absorbing cover 11 insulates and absorbs the sound emitted from the surface of the housing 2 due to membrane vibration or opening/closing vibration of the transmission housing 2. It also significantly reduces noise levels outside the vehicle. In particular, since the air layer 16 is formed between the inner circumferential surface of the sound-absorbing cover 11 and the outer surface of the housing 2, an even better noise reduction effect can be obtained. Since this air layer 16 is formed by the protrusion 15 provided on the sound-absorbing cover 11, there is no need to perform any special processing on the housing 2 side, and the necessary air layer 16 can be formed very easily. Can be secured.
また、上記吸音性カバー１１にあつては、その
脱着が容易であるから、車両の整備性に何ら悪影
響を与えることはなく、かつコスト的にも極めて
安価である。そして、この吸音性カバー１１自体
は単なるカバーであり、ハウジング２の一部とな
つている訳ではないから、従来のように油密性や
耐久性の点で不具合を生じることがない。 Furthermore, since the sound absorbing cover 11 is easy to attach and detach, it does not have any adverse effect on the maintainability of the vehicle and is extremely inexpensive. Since the sound absorbing cover 11 itself is just a cover and is not a part of the housing 2, there are no problems in terms of oil tightness or durability as in the conventional case.
尚、上記突起１５は吸音材自体の厚みを変化さ
せることなく第４図に示すように膨出形成するよ
うにしても良い。 Incidentally, the projection 15 may be formed into a bulge as shown in FIG. 4 without changing the thickness of the sound absorbing material itself.
以上の説明で明らかなように、この考案に係る
自動車用トランスミツシヨンハウジングにあつて
は、吸音性カバーを用いてトランスミツシヨンハ
ウジング外表面を覆うとともに、その間に空気層
を設けたので、トランスミツシヨンからの放射騒
音を効果的に低減できる。そして、吸音性カバー
の突起により上記空気層が形成されるので、面倒
な加工なしに必要な空気層を容易に確保できる。 As is clear from the above description, in the automotive transmission housing according to this invention, a sound-absorbing cover is used to cover the outer surface of the transmission housing, and an air layer is provided in between. Radiated noise from the transmission can be effectively reduced. Since the air layer is formed by the protrusions of the sound-absorbing cover, the necessary air layer can be easily secured without complicated processing.
また、吸音性カバーの脱着は容易であり、整備
性等に悪影響がないとともに、トランスミツシヨ
ンの油密性や耐久性を損なうことがない。 Furthermore, the sound-absorbing cover is easy to attach and detach, does not adversely affect maintainability, and does not impair the oil-tightness or durability of the transmission.
第１図は従来のトランスミツシヨンをエンジン
装着状態にて示す側面図、第２図はこの考案に係
るトランスミツシヨンを示す一部切欠の側面図、
第３図は第２図の−線に沿つた断面図、第４
図はこの考案の異なる実施例を示す要部断面図で
ある。
１，１……トランスミツシヨン、２……トラン
スミツシヨンハウジング、１１……吸音性カバ
ー、１２……位置決め用突起、１３……係合孔、
１４……クリツプ、１５……突起、１６……空気
層。
FIG. 1 is a side view showing a conventional transmission with the engine installed, and FIG. 2 is a partially cutaway side view showing the transmission according to this invention.
Figure 3 is a sectional view taken along the - line in Figure 2;
The figure is a sectional view of a main part showing a different embodiment of this invention. 1, 1... Transmission, 2... Transmission housing, 11... Sound absorbing cover, 12... Positioning protrusion, 13... Engaging hole,
14...Clip, 15...Protrusion, 16...Air layer.
Claims (1)
決め用の突起に係合する係合孔を有し、かつ両端
部がクリツプにより互いに連結されて略筒状とな
る吸音性カバーを用いて、上記トランスミツシヨ
ンハウジング外表面を覆うとともに、この吸音性
カバー内周面に複数の突起を形成してトランスミ
ツシヨンハウジング外表面との間に空気層を設け
てなることを特徴とする自動車用トランスミツシ
ヨンハウジング。 The above-mentioned transmission housing is manufactured by using a sound absorbing cover having an engagement hole that engages with a positioning protrusion protruding from the transmission housing, and having a substantially cylindrical shape with both ends connected to each other by clips. A transmission housing for an automobile, which covers the outer surface of the sound-absorbing cover and has a plurality of protrusions formed on the inner peripheral surface of the sound-absorbing cover to provide an air layer between the outer surface and the outer surface of the transmission housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3767082U JPS58139330U (en) | 1982-03-17 | 1982-03-17 | Automotive transmission housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3767082U JPS58139330U (en) | 1982-03-17 | 1982-03-17 | Automotive transmission housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58139330U JPS58139330U (en) | 1983-09-19 |
| JPS6245934Y2 true JPS6245934Y2 (en) | 1987-12-09 |
Family
ID=30049048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3767082U Granted JPS58139330U (en) | 1982-03-17 | 1982-03-17 | Automotive transmission housing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58139330U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163316U (en) * | 1982-04-26 | 1983-10-31 | マツダ株式会社 | Automotive drive system housing vibration damping device |
| JP2010261513A (en) * | 2009-05-08 | 2010-11-18 | Shin Kobe Electric Mach Co Ltd | Resin composite gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55127622U (en) * | 1979-03-05 | 1980-09-09 |
-
1982
- 1982-03-17 JP JP3767082U patent/JPS58139330U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58139330U (en) | 1983-09-19 |
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