JPH0352224Y2 - - Google Patents
Info
- Publication number
- JPH0352224Y2 JPH0352224Y2 JP14911486U JP14911486U JPH0352224Y2 JP H0352224 Y2 JPH0352224 Y2 JP H0352224Y2 JP 14911486 U JP14911486 U JP 14911486U JP 14911486 U JP14911486 U JP 14911486U JP H0352224 Y2 JPH0352224 Y2 JP H0352224Y2
- Authority
- JP
- Japan
- Prior art keywords
- key member
- valve body
- retainer
- valve
- plunger
- 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
- 210000000078 claw Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案はブレーキ倍力装置におけるキー部材の
抜止め装置に関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a device for preventing the key member from coming off in a brake booster.
「従来の技術」
一般にブレーキ倍力装置は入力軸によつて作動
される弁機構を備えており、その弁機構を構成す
る弁プランジヤは、上記バルブボデイに形成した
孔内に半径方向外方から挿入して上記弁プランジ
ヤに係合させたキー部材によつて上記バルブボデ
イから抜出るのが防止され、さらにそのキー部材
も抜止め装置によつて上記孔から抜出るのが防止
されている。"Prior Art" Generally, a brake booster is equipped with a valve mechanism operated by an input shaft, and a valve plunger that constitutes the valve mechanism is inserted from the outside in the radial direction into a hole formed in the valve body. A key member engaged with the valve plunger prevents the key member from coming out of the valve body, and a retaining device prevents the key member from coming out of the hole.
従来、上記キー部材の抜止め装置として、上記
キー部材を、バルブボデイに形成した上記孔内に
半径方向外方から挿入されて弁プランジヤに係合
し、その弁プランジヤがバルブボデイから抜出る
のを防止する抜止部と、この抜止部に一体に連設
され、上記バルブボデイの外周のほぼ半周を囲む
キー部材の円弧部とから構成し、さらに上記バル
ブボデイの外周に、上記キー部材の円弧部の反対
側からその外周のほぼ半周を囲むばね性を有する
リテーナを配設し、かつこのリテーナの両端部を
上記円弧部の端部に穿設した孔内に係合させてキ
ー部材に連結することにより、上記キー部材が上
記孔から抜出るのを防止するようにしたものが提
案されている（実開昭58−164965号）。 Conventionally, as a device for preventing the key member from coming out, the key member is inserted from the outside in the radial direction into the hole formed in the valve body and engaged with the valve plunger, thereby preventing the valve plunger from being pulled out from the valve body. and a circular arc portion of a key member integrally connected to the retaining portion and surrounding approximately half of the outer periphery of the valve body; By arranging a retainer having spring properties surrounding approximately half of the outer circumference thereof, and connecting the retainer to the key member by engaging both ends of the retainer into holes drilled in the ends of the circular arc portion, A device has been proposed in which the key member is prevented from being pulled out from the hole (Utility Model Application No. 164965/1983).
「考案が解決しようとする問題点」
しかるに、そのような構成の抜止め装置では、
上記リテーナの両端部を各円弧部の端部に穿設し
た孔内にそれぞれ別個に係合させる必要があるた
め、その組立作業が煩雑なものとなつていた。``Problems that the invention attempts to solve'' However, with such a configuration of the retaining device,
Since both ends of the retainer need to be separately engaged in holes drilled in the ends of each arcuate portion, the assembly work is complicated.
「問題点を解決するための手段」
本考案はそのような事情に鑑み、上記抜止部と
円弧部とを有するキー部材と、このキー部材の円
弧部の反対側からバルブボデイの外周のほぼ半周
を囲むリテーナとを備える抜止め装置において、
上記キー部材の円弧部の両端部内側に係合凹部を
形成するとともに、リテーナの両端部外側にその
リテーナの弾性により上記係合凹部に係合してキ
ー部材とリテーナとがバルブボデイの半径方向外
方に分離されるのを防止する係合爪を形成し、さ
らに上記リテーナの軸方向両端部を、バルブボデ
イに形成した一対の段部端面によつて又はバルブ
ボデイに形成した段部端面と上記キー部材とによ
つて挟持して、上記係合凹部と係合爪との係合が
軸方向に離脱されるのを防止したものである。"Means for Solving the Problem" In view of such circumstances, the present invention includes a key member having the above-mentioned retaining portion and a circular arc portion, and approximately half the circumference of the outer circumference of the valve body from the opposite side of the circular arc portion of the key member. In a retaining device comprising a surrounding retainer,
Engagement recesses are formed inside both ends of the arc portion of the key member, and engagement recesses are formed on the outside of both ends of the retainer due to the elasticity of the retainer, so that the key member and the retainer are moved outward in the radial direction of the valve body. Further, both ends of the retainer in the axial direction are formed with a pair of stepped end surfaces formed on the valve body, or between the stepped end surfaces formed on the valve body and the key member. This prevents the engaging recess and the engaging pawl from being disengaged from each other in the axial direction.
「作 用」
そのような構成によれば、キー部材とリテーナ
とをバルブボデイの外周に嵌装するように組付け
るだけで、上記リテーナの弾性によりこれに形成
した係合爪をキー部材の係合凹部に係合させて両
者が半径方向外方に分離されるのを防止できるの
で、従来に比較して組立作業を極めて容易なもの
とすることができる。"Function" According to such a configuration, the key member and the retainer are simply assembled so as to fit around the outer periphery of the valve body, and the elasticity of the retainer causes the engaging pawls formed on the retainer to engage with the key member. Since it is possible to prevent the two from being separated radially outward by engaging with the recess, the assembly work can be made much easier than in the past.
そしてこの際、上記キー部材は上記抜止部を挿
入した孔によつて軸方向の移動が制限されてお
り、またリテーナはバルブボデイに形成した一対
の段部端面によつて又はバルブボデイに形成した
段部端面と上記キー部材とによつて挟持されてや
はり軸方向の移動が制限されているので、両者が
必要量以上に軸方向に相対移動して上記係合凹部
と係合爪との係合が軸方向に離脱するのが防止さ
れている。 At this time, the key member is restricted from moving in the axial direction by the hole into which the retainer is inserted, and the retainer is restricted from moving in the axial direction by a pair of stepped end faces formed on the valve body or by the stepped portion formed on the valve body. Since the end face and the key member sandwich each other and axial movement is also restricted, the two may move relative to each other in the axial direction by more than the necessary amount, preventing the engagement between the engagement recess and the engagement pawl. It is prevented from coming off in the axial direction.
「実施例」
以下本考案をタンデムブレーキ倍力装置に適用
した実施例について説明すると、第１図におい
て、フロントシエル１とリヤシエル２とで構成し
た密封容器内は、その中央部に設けたセンタープ
レート３によつて前後のフロント室４とリヤ室５
との２室に区画してあり、かつ、上記リヤシエル
２およびセンタープレート３の軸部に、合成樹脂
からなる概略筒状のバルブボデイ６をそれぞれシ
ール部材７，８により気密を保つて摺動自在に貫
通させている。``Example'' An example in which the present invention is applied to a tandem brake booster will be described below. In FIG. 3: front and rear front chambers 4 and rear chambers 5
A roughly cylindrical valve body 6 made of synthetic resin is slidably secured to the shaft portions of the rear shell 2 and center plate 3 while keeping airtight with seal members 7 and 8, respectively. It penetrates.
そして上記バルブボデイ６には、上記フロント
室４とリヤ室５とに収納したフロントパワーピス
トン９とリヤパワーピストン１０とをそれぞれ連
結するとともに、各パワーピストン９，１０の背
面にフロントダイアフラム１１とリヤダイヤフラ
ム１２とをそれぞれ張設し、それらダイアフラム
１１，１２によつて上記フロント室４とリヤ室５
とをそれぞれ２室に区画して、合計４つの室Ａ，
Ｂ，Ｃ，Ｄを形成している。 A front power piston 9 and a rear power piston 10 housed in the front chamber 4 and rear chamber 5 are connected to the valve body 6, respectively, and a front diaphragm 11 and a rear diaphragm are connected to the back of each power piston 9, 10. 12, respectively, and the front chamber 4 and rear chamber 5 are separated by the diaphragms 11 and 12.
and are divided into two rooms each, making a total of four rooms A,
B, C, and D are formed.
上記バルブボデイ６内に収納した弁機構１５は
バルブボデイ６内に摺動自在に嵌合した弁プラン
ジヤ１６を備えており、この弁プランジヤ１６の
末端を図示しないブレーキペダルに連動させた入
力軸１７に連結している。また、弁プランジヤ１
６の先端をプツシユロツド１８の右端大径部内に
設けたリアクシヨンデイスク１９の端面に対向さ
せ、このプツシユロツド１８の先端はシール部材
２０を介してフロントシエル１の軸部から摺動自
在に外部に突出させて図示しないマスターシリン
ダのピストンに連動させている。 The valve mechanism 15 housed within the valve body 6 is equipped with a valve plunger 16 that is slidably fitted within the valve body 6, and the end of the valve plunger 16 is connected to an input shaft 17 that is linked to a brake pedal (not shown). are doing. Also, valve plunger 1
The tip of the push rod 18 faces the end surface of a reaction disk 19 provided in the large diameter portion at the right end of the push rod 18, and the tip of the push rod 18 is slidably protruded from the shaft portion of the front shell 1 via a seal member 20. The piston is interlocked with the piston of a master cylinder (not shown).
上記パワーピストン２やバルブボデイ６等は、
通常は、リターンスプリング２１によつて図示非
作動位置に保持させてあり、この非作動状態で
は、上記弁プランジヤ１６がバルブボデイ６から
抜出るのを防止するキー部材２２は、リヤシエル
２の内面に当接してバルブボデイ６に対する弁プ
ランジヤ１６の自由な右行を規制し、次に入力軸
１７および弁プランジヤ１６が作動された際に直
ちに上記弁機構１５による流体回路の切換え動作
が得られるようにしている。 The power piston 2, valve body 6, etc. mentioned above are
Normally, the return spring 21 holds the valve plunger 16 in the non-operating position shown in the figure. The valve plunger 16 is in contact with the valve body 6 to restrict the free movement of the valve plunger 16 to the right, so that when the input shaft 17 and the valve plunger 16 are next operated, the valve mechanism 15 can immediately switch the fluid circuit. .
すなわち、上記キー部材２２は、自由な状態で
はバルブボデイ６に対して大きく後退して弁機構
１５の弁体２３と弁座２４との間に大きな間隙を
確保するが、上記非作動状態ではリヤシエル２の
内面に当接してバルブボデイ６に対して前進さ
れ、それによつて弁プランジヤ１６の自由な後退
を規制して上記弁体２３と弁座２４との間の間隙
を微少若しくは実質的に零に保ち、次に入力軸１
７および弁プランジヤ１６が作動された際に直ち
に流体回路を切換えるようになつている。 That is, in the free state, the key member 22 moves back greatly with respect to the valve body 6 to ensure a large gap between the valve body 23 and the valve seat 24 of the valve mechanism 15, but in the non-operating state, the key member 22 is advanced against the valve body 6 by contacting the inner surface of the valve plunger 16, thereby restricting the free retreat of the valve plunger 16 and keeping the gap between the valve body 23 and the valve seat 24 at a slight or substantially zero level. , then input shaft 1
7 and the valve plunger 16 are adapted to immediately switch the fluid circuit when actuated.
次に、前述した室Ａは常時負圧が導入される定
圧室となつており、フロントシエル１に取付けた
負圧導入管２５を介して図示しないインテークマ
ニホールドに連通している。またこの定圧室Ａは
上記バルブボデイ６に形成した軸方向通路２６お
よび半径方向通路２７を介して常時定圧室Ｃに連
通している。 Next, the aforementioned chamber A is a constant pressure chamber into which negative pressure is constantly introduced, and communicates with an intake manifold (not shown) via a negative pressure introducing pipe 25 attached to the front shell 1. Further, this constant pressure chamber A is always in communication with the constant pressure chamber C via an axial passage 26 and a radial passage 27 formed in the valve body 6.
またこれらの定圧室Ａ，Ｃは、ブレーキ倍力装
置の非作動時には、上記軸方向通路２６、弁機構
１５の弁体２３と弁座２４との間隙およびバルブ
ボデイ６に形成した半径方向通路２８を介して変
圧室Ｄに連通し、さらにバルブボデイ６に形成し
た軸方向通路２９を介して変圧室Ｂに連通してい
る。 Furthermore, when the brake booster is not in operation, these constant pressure chambers A and C are connected to the axial passage 26, the gap between the valve body 23 and the valve seat 24 of the valve mechanism 15, and the radial passage 28 formed in the valve body 6. It communicates with the variable pressure chamber D through the valve body 6, and further communicates with the variable pressure chamber B through an axial passage 29 formed in the valve body 6.
この状態では、各定圧室Ａ，Ｃおよび変圧室
Ｂ，Ｄのそれぞれに負圧が導入されて等圧とな
り、各ダイアフラム１１，１２の前後に圧力差が
生じていないので、それらはリターンスプリング
２１によつて図示非作動位置に保持されるように
なる。 In this state, negative pressure is introduced into each of the constant pressure chambers A, C and variable pressure chambers B, D, and the pressure becomes equal, and there is no pressure difference between the front and back of each diaphragm 11, 12, so that the return spring 21 is held in the non-operating position shown.
然して、上記弁プランジヤ１６がバルブボデイ
６から抜出るのを防止するキー部材２２は、上記
バルブボデイ６に形成した半径方向の孔３４内に
外方から挿入されて上記弁プランジヤ１６に係合
し、その弁プランジヤ１６がバルブボデイ６から
抜出るのを防止する抜止部２２ａと、第２図に示
すように、この抜止部２２ａの外端部に一体に連
設され、上記バルブボデイ６の外周のほぼ半周を
囲む一対の円弧部２２ｂと、さらに各円弧部２２
ｂの両端部内側に形成した係合凹部２２ｃとを備
えてる。 The key member 22, which prevents the valve plunger 16 from being pulled out of the valve body 6, is inserted from the outside into the radial hole 34 formed in the valve body 6, engages with the valve plunger 16, and locks the valve plunger 16. A retaining portion 22a that prevents the valve plunger 16 from being pulled out from the valve body 6, and a retaining portion 22a that is integrally connected to the outer end of the retaining portion 22a as shown in FIG. A pair of surrounding arcuate portions 22b and each of the arcuate portions 22
It is provided with engagement recesses 22c formed inside both ends of b.
これに対し、上記キー部材２２が上記孔３４内
から抜出るのを防止するリテーナ３５は、第１図
ないし第３図に示すように、上記キー部材２２の
円弧部２２ｂとは反対側から上記バルブボデイ６
の外周のほぼ半周を囲む円弧状本体３５ａと、こ
の円弧状本体３５ａの両端部を外側に向けて折返
して形成した係合爪３５ｂとを備えており、各係
合爪３５ｂは自己の弾性により上記係合凹部２２
ｃに係合可能となつている。そして各係合爪３５
ｂの軸方向の幅は、上記キー部材２２がバルブボ
デイ６に対して所要量移動しても、両者が軸方向
に離脱することがないような幅に設定している。 On the other hand, the retainer 35 that prevents the key member 22 from coming out from the hole 34 is inserted from the opposite side of the key member 22 from the arcuate portion 22b, as shown in FIGS. 1 to 3. Valve body 6
The arcuate main body 35a surrounds approximately half of the outer periphery of the main body 35a, and the engaging claws 35b are formed by folding both ends of the arcuate main body 35a outward. The engagement recess 22
c. And each engagement claw 35
The axial width of b is set to such a width that even if the key member 22 moves a required amount with respect to the valve body 6, the two will not separate in the axial direction.
さらに、上記リテーナ３５の円弧状本体３５ａ
の両端部に、上記係合爪３５ｂと軸方向に位置を
ずらして一対の当接部３５ｃを形成し、各当接部
３５ｃは円弧状本体３５ａの両端部から半径方向
外方に円弧状に、上記係合爪３５ｂよりもさらに
外方まで突出させて形成している。各当接部３５
Ｃは、バルブボデイ６に形成した軸方向通路２９
の変圧室Ｄ側開口部内に収容可能な大きさに設定
してあり、かつリテーナ３５をバルブボデイ６の
所定位置に組付けた際に、上記係合爪３５ｂと反
対側の端面が上記軸方向通路２９の内部に形成し
た段部端面２９ａに隣接するような幅に設定し、
その段部端面２９ａとキー部材２２とによつてリ
テーナ３５を軸方向両側から挟持できるようにし
ている。 Further, the arcuate main body 35a of the retainer 35
A pair of abutting portions 35c are formed at both ends of the engaging claw 35b at positions shifted in the axial direction, and each abutting portion 35c extends in an arc shape radially outward from both ends of the arc-shaped main body 35a. , is formed to protrude further outward than the engaging claw 35b. Each contact part 35
C is an axial passage 29 formed in the valve body 6;
When the retainer 35 is assembled to a predetermined position of the valve body 6, the end surface opposite to the engaging claw 35b is set to a size that can be accommodated in the opening on the side of the pressure variable chamber D. The width is set to be adjacent to the step end face 29a formed inside the step part 29,
The step end face 29a and the key member 22 allow the retainer 35 to be held from both sides in the axial direction.
上記構成を有する本実施例において、上記キー
部材２２とリテーナ３５とを組付けるには、先ず
リテーナ３５の円弧状本体３５ａをバルブボデイ
６に形成した上記孔３４の開口側と反対側の外周
に嵌装するとともに、そのリテーナ３５の両端当
接部３５ｃをそれぞれ軸方向通路２９内に収納し
て段部端面２９ａに当接若しくは近接させる。 In this embodiment having the above configuration, in order to assemble the key member 22 and the retainer 35, first, the arcuate main body 35a of the retainer 35 is fitted into the outer periphery of the hole 34 formed in the valve body 6 on the opposite side to the opening side. At the same time, both end abutting portions 35c of the retainer 35 are housed in the axial passage 29 and brought into contact with or close to the step end face 29a.
そして次に、反対側からキー部材２２の抜止部
２２ａを上記孔３４内に挿入してその先端部を弁
プランジヤ１６に係合させるとともに、各円弧部
２２ｂの両端部内側に形成した係合凹部２２ｃ内
に上記リテーナ３５の係合爪３５ｂをそれぞれ係
合させれば、組付が完了する。 Next, the retaining part 22a of the key member 22 is inserted into the hole 34 from the opposite side and its tip is engaged with the valve plunger 16, and the engaging recesses formed inside both ends of each arcuate part 22b are Assembling is completed by engaging the engaging claws 35b of the retainer 35 into the retainers 22c.
この状態では、上記キー部材２２とリテーナ３
５とはそれぞれに形成した係合凹部２２ｃと係合
爪３５ｂとの係合により相互に半径方向外方に分
離されるのが防止される。しかも上記キー部材２
２は、上記抜止部２２ａを挿入した孔３４によつ
て軸方向の移動が所要量に制限されており、また
リテーナ３５の当接部３５ｃは、バルブボデイ６
に形成した段部端面２９ａと上記キー部材２２の
円弧部２２ｂとによつて挟持されてやはり軸方向
の移動が所要量に制限されているので、両者が必
要量以上に軸方向に相対移動して上記係合凹部２
２ｃと係合爪３５ｂとの係合が軸方向に離脱する
のが防止される。 In this state, the key member 22 and the retainer 3
5 and 5 are prevented from being separated from each other in the radial direction by the engagement between the engagement recesses 22c and the engagement claws 35b formed respectively. Moreover, the key member 2
2, the movement in the axial direction is limited to a required amount by the hole 34 into which the retainer 22a is inserted, and the abutting portion 35c of the retainer 35 is connected to the valve body 6.
Since the axial movement is limited to the required amount by being sandwiched between the step end face 29a formed in the key member 22 and the arcuate portion 22b of the key member 22, the relative movement of both in the axial direction by more than the required amount is prevented. the above-mentioned engagement recess 2
2c and the engagement claw 35b are prevented from disengaging in the axial direction.
なお、第４図に示すように、バルブボデイ６の
外周に環状溝３６を形成し、その環状溝３６内に
リテーナ３５の円弧状本体３５ａを嵌合してその
両側を上記環状溝の段部端面３６ａによつて挟持
させてもよい。この場合には、リテーナ３５に当
接部３５ｃを形成しておけば、上記当接部３５ｃ
と環状溝３６とにより、キー部材２２がバルブボ
デイ６に対して軸方向に変位した際にそれに伴な
つてリテーナ３５が傾くことを良好に防止できる
が、必要に応じてその当接部３５ｃを省略するこ
とも可能である。 As shown in FIG. 4, an annular groove 36 is formed on the outer periphery of the valve body 6, and the arcuate main body 35a of the retainer 35 is fitted into the annular groove 36, so that both sides thereof are connected to the stepped end surfaces of the annular groove. 36a may be used. In this case, if a contact portion 35c is formed in the retainer 35, the contact portion 35c
The annular groove 36 can effectively prevent the retainer 35 from tilting when the key member 22 is displaced in the axial direction with respect to the valve body 6, but the contact portion 35c can be omitted if necessary. It is also possible to do so.
「考案の効果」
以上のように、本考案によれば、キー部材とリ
テーナとをバルブボデイの外周に嵌装するように
組付けるだけで、極めて容易にキー部材がバルブ
ボデイから離脱することを防止できるという効果
が得られる。"Effect of the invention" As described above, according to the invention, the key member can be extremely easily prevented from coming off from the valve body simply by assembling the key member and the retainer so as to fit around the outer periphery of the valve body. This effect can be obtained.
第１図は本考案の一実施例を示し、かつ第２図
の−線に沿う断面図、第２図は第１図の−
線に沿う断面図、第３図はリテーナ３５の斜視
図、第４図は本考案の他の実施例を示す要部の断
面図である。
１……フロントシエル、２……リヤシエル、６
……バルブボデイ、１５……弁機構、１６……弁
プランジヤ、２２……キー部材、２２ａ……抜止
部、２２ｂ……円弧部、２２ｃ……係合凹部、２
９ａ……段部端面、３４……孔、３５……リテー
ナ、３５ａ……円弧状本体、３５ｂ……係合爪、
３５ｃ……当接部、３６……環状溝、３６ａ……
段部端面。
FIG. 1 shows an embodiment of the present invention, and is a sectional view taken along the - line in FIG. 2, and FIG.
3 is a perspective view of the retainer 35, and FIG. 4 is a sectional view of main parts showing another embodiment of the present invention. 1...Front shell, 2...Rear shell, 6
... Valve body, 15 ... Valve mechanism, 16 ... Valve plunger, 22 ... Key member, 22a ... Stopping portion, 22b ... Arc portion, 22c ... Engagement recess, 2
9a... Step end surface, 34... Hole, 35... Retainer, 35a... Arc-shaped main body, 35b... Engaging claw,
35c... Contact portion, 36... Annular groove, 36a...
Step end face.
Claims (1)
プランジヤと、上記バルブボデイに形成した孔内
に半径方向外方から挿入されて上記弁プランジヤ
に係合し、その弁プランジヤがバルブボデイから
抜出るのを防止するキー部材の抜止部と、この抜
止部に一体に連設され、上記バルブボデイの外周
のほぼ半周を囲むキー部材の円弧部と、この円弧
部の反対側から上記バルブボデイの外周のほぼ半
周を囲み、かつ両端部が上記各円弧部に連結され
て上記キー部材が上記孔から抜出るのを防止する
リテーナとを備えたブレーキ倍力装置におけるキ
ー部材の抜止め装置において、 上記キー部材の円弧部の両端部内側に係合凹部
を形成するとともに、上記リテーナの両端部外側
にそのリテーナの弾性により上記係合凹部に係合
してキー部材とリテーナとがバルブボデイの半径
方向外方に分離されるのを防止する係合爪を形成
し、さらに上記リテーナの軸方向両端部を、バル
ブボデイに形成した一対の段部端面によつて又は
バルブボデイに形成した段部端面と上記キー部材
とによつて挟持して、上記係合凹部と係合爪との
係合が軸方向に離脱されるのを防止したことを特
徴とするブレーキ倍力装置におけるキー部材の抜
止め装置。[Scope of Claim for Utility Model Registration] A valve plunger of a valve mechanism that is slidably fitted into a valve body, and a valve plunger that is inserted from the outside in the radial direction into a hole formed in the valve body and engaged with the valve plunger. A retaining portion of a key member that prevents the plunger from being pulled out from the valve body; a circular arc portion of the key member that is integrally connected to the retaining portion and surrounds approximately half of the outer circumference of the valve body; Preventing the key member from coming out in a brake booster, which includes a retainer that surrounds approximately half of the outer periphery of the valve body and has both ends connected to each of the arcuate portions to prevent the key member from coming out of the hole. In the device, engaging recesses are formed inside both ends of the arcuate portion of the key member, and engagement recesses are formed outside both ends of the retainer due to the elasticity of the retainer, so that the key member and the retainer are connected to the valve body. an engaging pawl for preventing the retainer from being separated in the radial direction outward; and the key member to prevent the key member from coming off in the axial direction of the engagement between the engagement recess and the engagement pawl. Device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14911486U JPH0352224Y2 (en) | 1986-09-29 | 1986-09-29 | |
| US07/097,803 US4787292A (en) | 1986-09-29 | 1987-09-16 | Brake booster |
| AU78846/87A AU583748B2 (en) | 1986-09-29 | 1987-09-21 | Brake booster |
| KR2019870016306U KR900007162Y1 (en) | 1986-09-29 | 1987-09-25 | Brake booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14911486U JPH0352224Y2 (en) | 1986-09-29 | 1986-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6353860U JPS6353860U (en) | 1988-04-11 |
| JPH0352224Y2 true JPH0352224Y2 (en) | 1991-11-12 |
Family
ID=31064017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14911486U Expired JPH0352224Y2 (en) | 1986-09-29 | 1986-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352224Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4567323B2 (en) * | 2003-12-15 | 2010-10-20 | 中央発條株式会社 | Fastening member for control cable |
-
1986
- 1986-09-29 JP JP14911486U patent/JPH0352224Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6353860U (en) | 1988-04-11 |
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