JPS6318527Y2 - - Google Patents
Info
- Publication number
- JPS6318527Y2 JPS6318527Y2 JP3712780U JP3712780U JPS6318527Y2 JP S6318527 Y2 JPS6318527 Y2 JP S6318527Y2 JP 3712780 U JP3712780 U JP 3712780U JP 3712780 U JP3712780 U JP 3712780U JP S6318527 Y2 JPS6318527 Y2 JP S6318527Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve housing
- annular
- boot
- annular retainer
- cylindrical
- 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
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
【考案の詳細な説明】
本考案は、車両のブレーキ、クラツチ等の操作
力を軽減する目的で使用される真空倍力装置に係
り、特にブーツの環状バルブハウジングへの取付
構造を改良することによりその取付作業を容易に
行なえるようにしたものである。[Detailed description of the invention] This invention relates to a vacuum booster used for the purpose of reducing the operating force of vehicle brakes, clutches, etc., and in particular, by improving the mounting structure of the boot to the annular valve housing. This allows for easy installation work.
一般に真空倍力装置では、シエル内に収納した
パワーピストン軸部の環状バルブハウジングを上
記シエルの開口部から突出させ、この開口部と環
状バルブハウジングの外端部との間に筒状ブーツ
を取付けている。従来、この筒状ブーツを上記外
端部に取付けるには、予め筒状ブーツの先端部分
を内側に折返してその折返し部の外周に係合溝を
形成しておくとともに、環状バルブハウジングの
外端部には環状リテーナを取付けておき、この環
状リテーナの内周部に上記係合溝を係合させるよ
うにしていた。 Generally, in a vacuum booster, the annular valve housing of the power piston shaft housed in the shell protrudes from an opening in the shell, and a cylindrical boot is installed between this opening and the outer end of the annular valve housing. ing. Conventionally, in order to attach this cylindrical boot to the outer end, the tip of the cylindrical boot is folded inward in advance and an engagement groove is formed on the outer periphery of the folded part. An annular retainer is attached to the annular retainer, and the engagement groove is engaged with the inner circumference of the annular retainer.
しかるに従来、上記環状リテーナの内周部に係
合溝を係合させる作業はブーツの先端部分を押圧
変形させつつ行う必要があることからその自動化
が困難で、しかも比較的時間を要するという欠点
があつた。 However, conventionally, the work of engaging the engagement groove with the inner peripheral part of the annular retainer has to be carried out while pressing and deforming the tip of the boot, which has the drawback of being difficult to automate and requiring a relatively long time. It was hot.
本考案はこのような事情に鑑み、筒状ブーツの
先端部分を環状バルブハウジングの軸方向に押込
むだけで容易に環状リテーナの内周部と係合溝と
を係合させることができるようにした真空倍力装
置を提供するものである。 In view of these circumstances, the present invention has been developed so that the inner peripheral part of the annular retainer and the engagement groove can be easily engaged by simply pushing the tip of the cylindrical boot in the axial direction of the annular valve housing. The present invention provides a vacuum booster.
以下図示実施例について本考案を説明すると、
第１図は真空倍力装置としてのブレーキ倍力装置
を示したもので、シエル１にシール２を介して摺
動自在に嵌合されたパワーピストン３の環状バル
ブハウジング４は上記シエル１の開孔部５より突
出し、こ突出された円筒部は筒状ブーツ６で覆わ
れている。この筒状ブーツ６のシエル側端部はビ
ードによつてシエル１の開孔部５の外周端に嵌着
され、筒状ブーツ６の他側先端部分は内側に折返
されてその折返し部６ａの外周に係合溝７が形成
され、この係合溝７は上記環状バルブハウジング
４の外端部内周に嵌着した環状リテーナ８の内周
部に係合されている。 The present invention will be explained below with reference to the illustrated embodiments.
FIG. 1 shows a brake booster as a vacuum booster, in which an annular valve housing 4 of a power piston 3 is slidably fitted into a shell 1 via a seal 2. The cylindrical portion that protrudes from the hole 5 is covered with a cylindrical boot 6. The shell-side end of the cylindrical boot 6 is fitted into the outer peripheral end of the opening 5 of the shell 1 with a bead, and the other end of the cylindrical boot 6 is folded inward to form the folded-back part 6a. An engagement groove 7 is formed on the outer periphery, and the engagement groove 7 is engaged with the inner periphery of an annular retainer 8 fitted to the inner periphery of the outer end of the annular valve housing 4 .
上記環状リテーナ８は、第３図に拡大して示す
ように、円錐状部材から構成され、その主たる外
周部８ａは環状バルブハウジング４の外端部内周
に形成した段部を構成する溝４ａ（第２図参照）
と実質的に同一の径を有している。さらに環状リ
テーナ８はその外周部等間隔複数位置に、それぞ
れ一対の切欠き８ｂ，８ｂおよび両切欠き間の係
止爪８ｃを備えている。この係止爪８ｃの径は上
記外周部８ａの径したがつて溝４ａの径よりも僅
かに大きく、第１図、第２図に示すように、その
溝４ａ内に環状リテーナ８を挿入した後、これが
溝４ａから外部に抜出るのを阻止する。さらに上
記筒状ブーツ６の先端、すなわち折返し部６ａの
上記係合溝７よりも先端部分の外周には、先端が
窄まつたテーパ面６ｂを形成している。 The annular retainer 8, as shown in an enlarged view in FIG. (See Figure 2)
have substantially the same diameter. Further, the annular retainer 8 is provided with a pair of notches 8b, 8b and a locking claw 8c between the two notches, respectively, at a plurality of equally spaced positions on the outer periphery. The diameter of this locking pawl 8c is slightly larger than the diameter of the outer peripheral portion 8a and therefore the diameter of the groove 4a, and as shown in FIGS. 1 and 2, the annular retainer 8 is inserted into the groove 4a. After that, this is prevented from coming out from the groove 4a. Furthermore, a tapered surface 6b with a narrowed end is formed on the outer periphery of the tip of the cylindrical boot 6, that is, at the tip of the folded portion 6a beyond the engagement groove 7.
したがつて環状リテーナ８の内周部に筒状ブー
ツ６の係合溝７を係合させるには、まず円錐状の
環状リテーナ８を、上記環状バルブハウジング４
の内側となる内側面８ｄが上記溝４ａの段部に当
接するまでその溝４ａ内に嵌合挿入し、これを環
状バルブハウジング４に係合するように取付け
る。次に筒状ブーツ６の折返し部６ａ先端を内方
に向けて押込めば、その先端のテーパ面６ｂが環
状リテーナ８の外側面に形成されるテーパ面８ｅ
に当接し、次いで、環状リテーナ８のテーパ面８
ｅがガイド面として作用し筒状ブーツ６の折返し
部６ａ先端を環状バルブハウジング４の内に摺動
案内するため、上記テーパ面６ｂ部分は縮径され
て環状リテーナ８の内周部を通過し、次に係合溝
７が環状リテーナ８の内周部に係合すればテーパ
面６ｂ部分は自己の弾性により元の径に復帰する
ので、係合溝７と環状リテーナ８の内周部との係
合状態が解除されることはない。 Therefore, in order to engage the engagement groove 7 of the cylindrical boot 6 with the inner circumferential portion of the annular retainer 8, the conical annular retainer 8 is first inserted into the annular valve housing 4.
The valve housing 4 is fitted into the groove 4a until the inner surface 8d thereof contacts the stepped portion of the groove 4a, and is attached to the annular valve housing 4 so as to engage with the groove 4a. Next, when the tip of the folded portion 6a of the cylindrical boot 6 is pushed inward, the tapered surface 6b of the tip becomes a tapered surface 8e formed on the outer surface of the annular retainer 8.
and then the tapered surface 8 of the annular retainer 8
Since the tapered surface 6b functions as a guide surface and slides and guides the tip of the folded portion 6a of the cylindrical boot 6 into the annular valve housing 4, the diameter of the tapered surface 6b is reduced and passes through the inner circumference of the annular retainer 8. Then, when the engagement groove 7 engages with the inner circumference of the annular retainer 8, the tapered surface 6b portion returns to its original diameter due to its own elasticity, so that the engagement groove 7 and the inner circumference of the annular retainer 8 The engagement state of is never released.
また上述のように、環状リテーナ８を環状バル
ブハウジング４内に嵌入収納しているのでその環
状バルブハウジング４の外周面全域をシール２と
の摺接面として確保することができ、さらに上記
環状リテーナ８を円錐状部材で構成しているので
溝４ａに挿入するのが容易でしかも外れにくく、
かつ係合溝７もこれから外れにくくなるという作
用効果が得られる。 Further, as described above, since the annular retainer 8 is fitted and housed in the annular valve housing 4, the entire outer peripheral surface of the annular valve housing 4 can be secured as a sliding surface with the seal 2. Since 8 is made of a conical member, it is easy to insert into the groove 4a, and it is difficult to come off.
Moreover, the effect that the engagement groove 7 also becomes difficult to come off is obtained.
加わうるに、上記環状リテーナ８は極めて簡単
な偏平形状を有するため、その成型加工を容易に
行い得られ、その重積配置が可能となることと相
俟ち環状リテーナ８の自動供給が容易となつて、
筒状ブーツ６の環状バルブハウジング４に対する
組付けの自動化が極めて容易になる。 In addition, since the annular retainer 8 has an extremely simple flat shape, it can be easily molded, and the annular retainer 8 can be stacked and arranged, and the automatic feeding of the annular retainer 8 is easy. As I get older,
Automating the assembly of the cylindrical boot 6 to the annular valve housing 4 becomes extremely easy.
なお、上記環状リテーナ８を第４図に示すよう
に断面略Ｌ字形の環状リテーナ９とし、これを環
状バルブハウジング４の溝４ａに嵌着してその外
側面をテーパ面９ａとしてもよい。 The annular retainer 8 may be replaced with an annular retainer 9 having a substantially L-shaped cross section as shown in FIG. 4, which may be fitted into the groove 4a of the annular valve housing 4 so that the outer surface thereof has a tapered surface 9a.
さらに、環状リテーナ８の外周に、第５図に示
すように、例えば１つの切欠き８ｆを形成し、外
周部８ａ全体を環状バルブハウジング４の溝４ａ
に嵌着させる構成としてもよい。また、上記切欠
き８ｆに代え、第５図に想像線で示すように、切
断部８ｇにより環状リテーナ８の円環を切断する
構造としても、組立てが容易でしかも外れにくい
という効果が得られる。 Furthermore, as shown in FIG.
It may also be configured to be fitted into the Further, instead of the cutout 8f, a structure in which the ring of the annular retainer 8 is cut by a cutting portion 8g as shown by the imaginary line in FIG. 5 can also be used to facilitate assembly and prevent it from coming off easily.
以上のように本考案によれば、環状バルブハウ
ジング円筒部の外端部内周に段部を形成するとと
もに、この段部に嵌着された環状リテーナにバル
ブハウジング内側方向に窄まり傾斜するテーパ面
を形成するとともに、上記ブーツの係合溝より先
端側の折返し部外側面に上記リテーナと同一方向
に傾斜するテーパ面を形成したため、環状リテー
ナのテーパ面が筒状ブーツ先端テーパ面のガイド
面として作用し、筒状ブーツの先端を圧入するだ
けで、該先端部を自動的に挾窄凹入させてその先
端外周面の係合溝と環状リテーナの内周面とを係
合させることができ、したがつてその組付けが容
易となり、しかも環状リテーナの形状の簡素化と
ともに組付時間の短縮及び自動化を図ることが可
能となるという効果が得られる。 As described above, according to the present invention, a step is formed on the inner periphery of the outer end of the cylindrical portion of the annular valve housing, and the annular retainer fitted into the step has a tapered surface that narrows and slopes toward the inside of the valve housing. At the same time, a tapered surface inclined in the same direction as the retainer is formed on the outer surface of the folded part on the distal end side of the engagement groove of the boot, so that the tapered surface of the annular retainer serves as a guide surface for the tapered surface at the distal end of the cylindrical boot. By simply press-fitting the tip of the cylindrical boot, the tip can be automatically recessed and the engagement groove on the outer circumferential surface of the tip can be engaged with the inner circumferential surface of the annular retainer. Therefore, the assembly becomes easy, and the shape of the annular retainer can be simplified, and the assembly time can be shortened and automated.
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図の要部の拡大図、第３図ａは環状リ
テーナの平面図、第３図ｂは第３図ａのＡ−Ａ線
に沿う断面図、第４図は本考案の他の実施例を示
す要部の断面図、第５図ａは環状リテーナのさら
に他の実施例を示す平面図、第５図ｂは第５図ａ
のＢ−Ｂ線に沿う断面図である。
１……シエル、３……パワーピストン、４……
環状バルブハウジング、５……シエル開孔部、６
……筒状ブーツ、６ａ……折返し部、６ｂ……テ
ーパ面、７……係合溝、８，９……環状リテー
ナ、８ｅ，９ａ……テーパ面。
Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3a is a plan view of the annular retainer, and Fig. 3b is Fig. 3a. FIG. 4 is a sectional view of essential parts showing another embodiment of the present invention, FIG. 5a is a plan view showing still another embodiment of the annular retainer, FIG. b is Figure 5a
FIG. 2 is a cross-sectional view taken along line BB of 1... Ciel, 3... Power Piston, 4...
Annular valve housing, 5...Shell opening, 6
... Tubular boot, 6a ... Turned portion, 6b ... Tapered surface, 7 ... Engagement groove, 8, 9 ... Annular retainer, 8e, 9a ... Tapered surface.
Claims (1)
エル内に収納し、このパワーピストン軸部の環状
バルブハウジング円筒部を上記シエルの開口部か
ら突出させ、かつ筒状ブーツの一端を上記開口部
に止着するとともに、このブーツの他端を内側に
折返してその折返し部外周に形成した係合溝を、
上記環状バルブハウジング円筒部の外端部に取付
けた環状リテーナの内周部に係合させた真空倍力
装置において、上記環状バルブハウジング円筒部
の外端部内周に段部を形成するとともに、この段
部に嵌着された環状リテーナにバルブハウジング
内側方向に窄まり傾斜するテーパ面を形成すると
ともに、上記ブーツの係合溝より先端側の折返し
部外側面に上記リテーナと同一方向に傾斜するテ
ーパ面を形成したことを特徴とする真空倍力装
置。 A power piston that moves forward and backward in response to a pressure difference is housed in a shell, an annular valve housing cylindrical portion of the power piston shaft protrudes from an opening in the shell, and one end of a cylindrical boot is fixed in the opening. At the same time, the other end of the boot is folded inward to form an engagement groove on the outer periphery of the folded part.
In the vacuum booster that is engaged with the inner periphery of the annular retainer attached to the outer end of the cylindrical part of the annular valve housing, a stepped part is formed on the inner periphery of the outer end of the cylindrical part of the annular valve housing; An annular retainer fitted to the stepped portion is formed with a tapered surface that narrows and slopes toward the inside of the valve housing, and a taper that slopes in the same direction as the retainer is formed on the outer surface of the folded portion on the distal end side of the engagement groove of the boot. A vacuum booster characterized by forming a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3712780U JPS6318527Y2 (en) | 1980-03-21 | 1980-03-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3712780U JPS6318527Y2 (en) | 1980-03-21 | 1980-03-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56138758U JPS56138758U (en) | 1981-10-20 |
| JPS6318527Y2 true JPS6318527Y2 (en) | 1988-05-25 |
Family
ID=29632700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3712780U Expired JPS6318527Y2 (en) | 1980-03-21 | 1980-03-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6318527Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH042841Y2 (en) * | 1985-04-18 | 1992-01-30 | ||
| JP2006341790A (en) * | 2005-06-10 | 2006-12-21 | Advics:Kk | Booster |
-
1980
- 1980-03-21 JP JP3712780U patent/JPS6318527Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56138758U (en) | 1981-10-20 |
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