JPS61270535A - Block type v-belt - Google Patents
Block type v-beltInfo
- Publication number
- JPS61270535A JPS61270535A JP11116885A JP11116885A JPS61270535A JP S61270535 A JPS61270535 A JP S61270535A JP 11116885 A JP11116885 A JP 11116885A JP 11116885 A JP11116885 A JP 11116885A JP S61270535 A JPS61270535 A JP S61270535A
- Authority
- JP
- Japan
- Prior art keywords
- blocks
- block
- pitch
- band member
- band
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
- F16G5/166—V-belts, i.e. belts of tapered cross-section consisting of several parts with non-metallic rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はブロック式Ｖベルト、特にＶヘルド式無段変速
機などに使用されるブロック式Ｖベルトに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a block type V-belt, particularly to a block-type V-belt used in a V-held continuously variable transmission.
従来技術とその問題点
従来、ブロック式Ｖベルトとしては、特公昭５５−６７
８３号公報に記載のように金属製帯体に多数のブロック
を摺動自在に支持した圧縮方式のブロック式Ｖベルトと
、特公昭５９〜８６９７号公報に記載のように帯体に多
数のブロックをそれぞれ位置決めして支持した引張方式
のブロック式Ｖベルトとが知られている。Conventional technology and its problems Conventionally, block-type V-belts were developed using the
A compression type block type V-belt in which a large number of blocks are slidably supported on a metal band as described in Japanese Patent Publication No. 83, and a large number of blocks on a band as described in Japanese Patent Publication No. 1986-8697. A tension-type block-type V-belt is known in which the V-belts are positioned and supported.
これらブロック式Ｖベルトにおいて、■ヘルドを駆動す
るプーリが一定回転数で回転しているとき、第１図に示
すごとくある周波数ｆ。の点で音圧レヘルのピークがあ
り、この音圧ピークが非常に耳障りな騒音となるという
問題があった。この原因は、帯体に支持された各ブロッ
ク間のピッチが一定であり、そのためブロックがプーリ
に衝突する単位時間当りの回数（以下、かみ合い周波数
ｆｏという）が一定となって、これが音圧ピークをもた
らすものであると考えられる。この音圧ピークはプーリ
の回転数が高くなればそれだけ顕著に現れる。In these block-type V-belts, (1) When the pulley that drives the heald rotates at a constant rotation speed, a certain frequency f as shown in FIG. There is a problem in that there is a peak in sound pressure level at this point, and this sound pressure peak results in extremely harsh noise. The reason for this is that the pitch between each block supported by the band is constant, so the number of times the blocks collide with the pulley per unit time (hereinafter referred to as the meshing frequency fo) is constant, which causes the sound pressure to peak. It is thought that this brings about the following. This sound pressure peak becomes more pronounced as the rotation speed of the pulley increases.
発明の目的
本発明はかかる従来の問題点に鑑みてなされたもので、
その目的は、かみ合い周波数成分の騒音を低減できるブ
ロック式Ｖベルトを提供することにある。Purpose of the Invention The present invention has been made in view of such conventional problems.
The purpose is to provide a block-type V-belt that can reduce noise in meshing frequency components.
発明の構成
上記目的を達成するために、本発明は、帯体に支持され
た各ブロック間のピッチを不均等とじたものである。Structure of the Invention In order to achieve the above object, the present invention is such that the pitches between the blocks supported by the band are unequal.
すなわち、各ブロック間のピッチを不均等とすれば、か
み合い周波数にはバラツキが生じ、そのためかめ合い周
波数成分の音圧ビークが抑えられ、騒音を低減できるも
のである。That is, if the pitches between the blocks are made uneven, variations will occur in the meshing frequency, which will suppress the sound pressure peak of the meshing frequency component and reduce noise.
実施例の説明
第２図は本発明の−・例である引張力式のブロック式■
ヘルドを示し、内部に芯材２を埋設したゴム製帯体１と
、帯体１に位置決めされて支持された多数のブロック５
とで構成されている。帯体１の内面には凸部３、外面に
は凹！＃ｌＩ４がそれぞれ形成されており、略Ｕ字形の
ブロック５を帯体１の内面凸部３と係合するように図面
下方より嵌合し、ブロック５の側方から支柱６を挿着す
ることにより、支柱６を帯体１の外面凹部４に係合させ
、ブロック５を帯体１に対して位置決めしている。DESCRIPTION OF EMBODIMENTS Figure 2 shows a tensile force type block type which is an example of the present invention.
A rubber band 1 which shows a heddle and has a core material 2 embedded therein, and a large number of blocks 5 positioned and supported by the band 1.
It is made up of. The inner surface of the band 1 has a convex portion 3, and the outer surface has a concave portion! #lI4 are respectively formed, and the substantially U-shaped block 5 is fitted from the bottom of the drawing so as to engage with the inner surface convex portion 3 of the band 1, and the support column 6 is inserted from the side of the block 5. As a result, the support column 6 is engaged with the outer surface recess 4 of the band 1, and the block 5 is positioned with respect to the band 1.
なお、ブロック５のＶ字状両側面には、プーリとの摩擦
係数を高め、騒音を低減するためにゴム材（図示せず）
が被着されている。Note that rubber material (not shown) is attached to both V-shaped sides of the block 5 to increase the coefficient of friction with the pulley and reduce noise.
is covered.
−１−記構成のブロック式■ヘルドにおいて、帯体１に
形成した凹凸部３，４のピッチδを不均等とし、これに
よって化体１に支持された各フロック５のピッチを不均
等にしている。例えば、ｇＡａ図のように隣り合・う５
個のブロック５ａ、５ｂ、５ｃ、５ｄ、５ｅのそれぞれ
のピッチ幅をａ、ｂ。In the block type heald having the configuration described in -1-, the pitches δ of the concave and convex portions 3 and 4 formed on the band body 1 are made uneven, thereby making the pitches of each flock 5 supported on the body 1 uneven. There is. For example, as shown in the gAa diagram, adjacent
The pitch widths of the blocks 5a, 5b, 5c, 5d, and 5e are a and b, respectively.
ｃ、ｄとすると、総てのピッチ幅をそれぞれ異なら一ロ
るか、あるいは１個おきにピッチ幅を異ならせる（ａ＝
ｃ≠ｂ＝ｄ）力）、さらには２（固おきにピッチ幅を異
ならせる（ａ＝ｂ７−ｃ ＝ｄ）など、種々の方法が考
えられる。いずれの場合も、ブロック５がプーリ９．！
：ｔｋ’を突する際のかめ合い周波数にバラツキが生し
、第１図破線で示すように音圧ピークを従来より低減で
きる。例えば、不等ピッチ量（最大ピッチ幅／最小ピッ
チ幅）を１．２以」−とすれば、かみ合い周波数成分の
音圧ピークを従来の半分以下にすることができた。If c and d are different, then the pitch widths of all the pitch widths are different, or the pitch width of every other pitch is different (a=
Various methods can be considered, such as (c≠b=d) force), or even 2 (changing the pitch width at fixed intervals (a=b7-c=d). In either case, the block 5 is connected to the pulley 9. !
: There is variation in the engagement frequency when hitting tk', and the sound pressure peak can be reduced compared to the conventional method, as shown by the broken line in FIG. For example, if the unequal pitch amount (maximum pitch width/minimum pitch width) is set to 1.2 or more, the sound pressure peak of the meshing frequency component can be reduced to less than half of the conventional one.
上記実施例では、引張方式のブロック弐■ヘルドについ
て説明したが、圧縮方式のブロック式ブロックにも本発
明を適用できる。ただ、圧縮方式の場合にはブロックが
帯体に対して摺動自在であるため、引張方式のような帯
体の凹凸部でピッチ幅を設定することができないので、
各ブロックの帯体長手方向の厚みを不均等にすればよい
。In the above embodiment, a tension type block 2-held was explained, but the present invention can also be applied to a compression type block type block. However, in the case of the compression method, since the block is slidable against the band, it is not possible to set the pitch width using the irregularities of the band as in the tension method.
The thickness of each block in the longitudinal direction of the band may be made uneven.
発明のすＪ果
以上の説明で明らかなように、本発明によれば化体に支
持された各ブロック間のピッチを不均等としたので、か
め合い周波数にバラツキが生し、そのためかみ合い周波
数成分の音圧ビークが抑えられ、騒音を低減できる。Effects of the Invention As is clear from the above explanation, according to the present invention, the pitches between the blocks supported by the incarnation are made uneven, resulting in variations in the meshing frequency, and as a result, the meshing frequency component The sound pressure peak of is suppressed and noise can be reduced.
第１図はブロック式Ｖヘルドの騒音レヘルを示ず図、第
２図は本発明の一例であるブロック弐Ｖベルトの斜視図
、第３図はブロック式■ヘルドをプーリに巻き川けた状
態の側面図である。
Ｉ・・・帯体、５・・・ブロック、９・・・プーリ、ａ
”−ｄ・・・ピッチ幅。
出 願 人 ダイハツ工業株式会社
代 理 人 弁理士 部外 秀隆
第１図
第２図Figure 1 is a diagram that does not show the noise level of a block type V heald, Figure 2 is a perspective view of a block 2 V belt which is an example of the present invention, and Figure 3 is a diagram of a block type V heald wound around a pulley and laid out. FIG. I...Band, 5...Block, 9...Pulley, a
”-d...Pitch width. Applicant: Daihatsu Motor Co., Ltd. Agent: Patent attorney Outside: Hidetaka Figure 1 Figure 2
Claims (1)
ルトにおいて、各ブロック間のピッチを不均等としたこ
とを特徴とするブロック式Ｖベルト。(1) A block-type V-belt in which a large number of blocks are supported on a band, and the block-type V-belt is characterized in that the pitches between the blocks are unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11116885A JPS61270535A (en) | 1985-05-23 | 1985-05-23 | Block type v-belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11116885A JPS61270535A (en) | 1985-05-23 | 1985-05-23 | Block type v-belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61270535A true JPS61270535A (en) | 1986-11-29 |
Family
ID=14554200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11116885A Pending JPS61270535A (en) | 1985-05-23 | 1985-05-23 | Block type v-belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61270535A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824424A (en) * | 1987-08-24 | 1989-04-25 | Fuji Jukogyo Kabushiki Kaisha | Belt for a belt drive device |
| US6949211B2 (en) | 2003-04-16 | 2005-09-27 | The Goodyear & Rubber Company | Means of manufacturing plural optimized cogged drive belts |
-
1985
- 1985-05-23 JP JP11116885A patent/JPS61270535A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824424A (en) * | 1987-08-24 | 1989-04-25 | Fuji Jukogyo Kabushiki Kaisha | Belt for a belt drive device |
| US6949211B2 (en) | 2003-04-16 | 2005-09-27 | The Goodyear & Rubber Company | Means of manufacturing plural optimized cogged drive belts |
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