JPH032704B2 - - Google Patents
Info
- Publication number
- JPH032704B2 JPH032704B2 JP55180919A JP18091980A JPH032704B2 JP H032704 B2 JPH032704 B2 JP H032704B2 JP 55180919 A JP55180919 A JP 55180919A JP 18091980 A JP18091980 A JP 18091980A JP H032704 B2 JPH032704 B2 JP H032704B2
- Authority
- JP
- Japan
- Prior art keywords
- shell
- movable wall
- wall
- output shaft
- master cylinder
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000004323 axial length Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
【発明の詳細な説明】
本発明は、車両等のブレーキ装置或はクラツチ
装置の作動を助勢するために使用されるタンデム
型気圧式倍力装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tandem pneumatic booster used to assist the operation of a brake or clutch device of a vehicle or the like.
従来、タンデム型気圧式倍力装置として、前方
端部にマスタシリンダを取付けられる前方シエル
と後方端部を車体に取付けられる後方シエルとを
密封部材を介在して互いに結合され、内部に空間
を有するシエルと、前記空間を前方室と後方室と
に区分しシエルに固定した中間壁と、前記両室に
各々移動可能に配設して前方に定圧室を後方に変
圧室を各々形成するとともに機械的に連結された
前方可動壁及び後方可動壁と、後方可動壁に設け
シエルの後端を貫通して外部に突出するハブ部
と、該ハブ部に設けられた前記変圧室と前記変圧
室または外部圧力源との連通遮断を行う弁装置
と、前記ハブ部の前方端部に配置されマスタシリ
ンダに出力を伝達する出力軸と、該出力軸と前記
弁装置との間に設けられ出力軸からの反力の一部
を弁装置に伝える反力装置とを備えたものが知ら
れている。 Conventionally, as a tandem type pneumatic booster, a front shell to which a master cylinder is attached to the front end and a rear shell to which the rear end is attached to the vehicle body are connected to each other via a sealing member and have a space inside. a shell, an intermediate wall that divides the space into a front chamber and a rear chamber and is fixed to the shell, and is movably disposed in each of the two chambers to form a constant pressure chamber in the front and a variable pressure chamber in the rear, and a machine. a front movable wall and a rear movable wall that are connected to each other; a hub portion provided on the rear movable wall and projecting to the outside through the rear end of the shell; and the variable pressure chamber and the variable pressure chamber provided in the hub portion; a valve device that cuts off communication with an external pressure source; an output shaft that is disposed at the front end of the hub portion and transmits output to the master cylinder; and a valve device that is provided between the output shaft and the valve device and that There are known devices equipped with a reaction force device that transmits a part of the reaction force of the valve device to the valve device.
ところが、こうした従来のものでは、前方可動
壁を後方可動壁及びハブ部と機械的に結合する手
段として、前方可動壁の中央部から後方に向つて
延び中間壁を摺動自在に貫通する筒状部を当該前
方可動壁に設け、この筒状部の後端を後方可動壁
に一体化したハブ部の前端に螺着するようにして
いるため、ハブ部に螺着部を設ける必要からハブ
部の軸方向長さが長くなり、こうした余分な結合
構造を設けてあるハブ部の前方側に、装置作動時
の最大移動量に対応した空間を設けるためには、
シエルの前方端の対向する部分をより前方側に変
移させた位置に設定するしかなく、これによりマ
スタシリンダとの結合状態では組合せの軸方向長
さが長くなるという問題を生じさせる。 However, in these conventional devices, as a means for mechanically coupling the front movable wall with the rear movable wall and the hub portion, a cylindrical member extending rearward from the center of the front movable wall and slidably penetrating the intermediate wall is used. A section is provided on the front movable wall, and the rear end of this cylindrical section is screwed onto the front end of the hub section integrated with the rear movable wall. In order to provide a space corresponding to the maximum amount of movement during device operation on the front side of the hub section where the extra coupling structure is provided, the axial length of the
There is no choice but to set the opposing portions of the front end of the shell at a position shifted further to the front side, which causes the problem that the axial length of the combination increases when connected to the master cylinder.
また、従来の他の方式として、中間壁に対しマ
スタシリンダを結合するために前方側中央部に筒
部を形成し、かつ、後方シエルを結合するために
後方側に中央部より外周側に寄つた位置で柱状部
を形成し、前方可動壁と後方可動壁とを中間壁を
貫通して延びる軸状部材により互いに結合する方
式がある。ところが、この方式では、予め中間
壁、前方可動壁、後方可動壁、後方シエルの４者
を組合せたとき、中間壁全体が径方向にしつかり
と案内されていないことから、前方シエルと後方
シエルとの結合上のずれがそのまま前方可動壁及
び中間壁の前方シエルへの組付誤差となり、この
両者と前方シエルとの間の密封性能あるいは摺動
性に悪影響を与え、作動の信頼性を損うといつた
問題がある。 In addition, as another conventional method, a cylindrical part is formed at the front central part in order to connect the master cylinder to the intermediate wall, and the cylindrical part is moved closer to the outer circumferential side than the central part on the rear side in order to connect the rear shell. There is a method in which a columnar portion is formed at a tilted position, and the front movable wall and the rear movable wall are coupled to each other by a shaft member extending through the intermediate wall. However, in this method, when the intermediate wall, front movable wall, rear movable wall, and rear shell are combined in advance, the entire intermediate wall is not firmly guided in the radial direction. Any deviation in the connection between the front movable wall and the intermediate wall will result in an assembly error in the front shell, which will adversely affect the sealing performance or slidability between these two and the front shell, impairing the reliability of operation. There is a problem.
本発明は、叙上の問題に鑑みて成され、マスタ
シリンダとの組合せで軸方向長さを短縮可能であ
るとともに作動の信頼性を向上可能なタンデム型
気圧式倍力装置を提供することを目的とし、この
目的を達成するために、前記前方可動壁と後方可
動壁とを前記中間壁を摺動可能に貫通する連結部
材により互いに連結し、中間壁の外周端を前記密
封部材に係合させて前記前方シエルと前記後方シ
エルとの間で固定し、前記中間壁の中央部から前
記出力軸を囲み前記前方可動壁を相対的に摺動可
能に貫通してシエルまで延在する筒状部を設ける
とともに、当該筒状部に内嵌する凹み部をシエル
の前方端に形成し、前記凹み部にマスタシリンダ
の端部を嵌合可能としたものである。 The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a tandem type pneumatic booster that can shorten the axial length in combination with a master cylinder and improve the reliability of operation. and to achieve this purpose, the front movable wall and the rear movable wall are connected to each other by a connecting member slidably passing through the intermediate wall, and the outer peripheral end of the intermediate wall is engaged with the sealing member. and fixed between the front shell and the rear shell, and extending from the center of the intermediate wall to the shell by surrounding the output shaft and relatively slidably penetrating the front movable wall. At the same time, a recessed portion that fits inside the cylindrical portion is formed at the front end of the shell, so that the end of the master cylinder can be fitted into the recessed portion.
すなわち、本発明によれば、前記可動壁と後方
可動壁とを連結部材によつて互いに連結している
ので、前方可動壁とハブ部とを従来例のようにハ
ブ部の前端部でねじ構造を用いて互いに結合する
必要がなくなり、これによりハブ部には、前方可
動壁連結用のねじ構造を設ける必要がなくなり、
ハブ部の軸方向長さを短縮でき、この短縮した長
さ分だけ凹み部を深く筒状部の内方側に延ばして
形成でき、マスタシリンダ端部の嵌入長さを大き
くして、マスタシリンダとの組合せでの軸方向長
さを短縮できる。 That is, according to the present invention, since the movable wall and the rear movable wall are connected to each other by the connecting member, the front movable wall and the hub portion are connected to each other by a threaded structure at the front end of the hub portion as in the conventional example. This eliminates the need for the hub part to have a threaded structure for connecting the front movable wall.
The axial length of the hub part can be shortened, and the concave part can be formed by extending deeper into the cylindrical part by the shortened length, and the fitting length of the master cylinder end can be increased. In combination with this, the axial length can be shortened.
また、ハブ部の軸方向長さを短縮でき、かつ、
ねじ結合構造が不要であるから、ハブ部の形状を
簡略化、小型化でき、生産性が向上する。 In addition, the axial length of the hub portion can be shortened, and
Since a screw connection structure is not required, the shape of the hub portion can be simplified and downsized, improving productivity.
更に、中間壁は、装置組立時その筒状部を前方
シエルの凹み部に嵌合し、かつ、外周部をシール
材に係合させて前方シエルに組付けるので、凹み
部による位置決めとシール材への係合による融通
性により、中間壁を正規位置に大きな誤差を生じ
ることなく組付けることができ、前方可動壁も中
間壁組付け時にシエル及び中間壁との間で大きな
誤差が生ずることなく組付けられ、内外のシール
性及び摺動性を安定させることができ、作動時の
信頼性を向上する。 Furthermore, when assembling the device, the intermediate wall is assembled to the front shell by fitting its cylindrical part into the recess of the front shell and engaging the outer circumferential part with the sealing material. Due to the flexibility of engagement with the shell, the intermediate wall can be assembled in the correct position without making a large error, and the front movable wall can also be assembled with the intermediate wall without making a large error between the shell and the intermediate wall. When assembled, it is possible to stabilize the internal and external sealing properties and sliding properties, improving reliability during operation.
以下、図示の実施例に基き、本発明のタンデム
型気圧式倍力装置について詳説する。 EMBODIMENT OF THE INVENTION Hereinafter, the tandem type pneumatic booster of the present invention will be explained in detail based on the illustrated embodiment.
第１図は、本発明の一実施例である負圧式倍力
装置の側断面図で一部を変位図示している。な
お、本明細書中前方後方とは、第１図における左
方を前方、右方を後方として記述している。 FIG. 1 is a side sectional view of a negative pressure booster which is an embodiment of the present invention, and shows a partially displaced view. In this specification, "front and rear" refers to the left side in FIG. 1 as the front and the right side as the rear.
第１図において、タンデム型気圧式倍力装置は
全体を１で示されており、この装置１は、カツプ
状の前方シエル２と後方シエル３とを、前方シエ
ル２の鍔部４と後方シエル３の段部５との間に環
状の密封部材６を圧縮配置して結合することによ
つて、内部空間７を有するシエル８を備えてい
る。 In FIG. 1, the tandem pneumatic booster is shown as a whole by 1, and this device 1 has a cup-shaped front shell 2 and a rear shell 3, and a flange 4 of the front shell 2 and a rear shell. A shell 8 having an internal space 7 is provided by compressing and coupling an annular sealing member 6 between the step portion 5 of the shell 3 and the step portion 5 of the shell 8 .
シエル８内には、中間部分に板状の中間壁９が
その外周端を密封部材６と段部５との間に挾圧支
持されて配設されており、内部空間７を前方室１
０及び後方室１１に区画している。また、中間壁
９の中央部分には、円筒状の筒部１２が一体的に
形成されており、該筒部１２は、前方シエル２ま
で延びて前方シエル２に形成した凹み部１３に外
嵌している。凹み部１３は、図示しないマスタシ
リンダを前方シエル２に溶接止めしたボルト１４
を利用して前方シエル２に取付ける際、マスタシ
リンダのシリンダ本体の一端部が嵌入するに充分
な大きさの空所１５を形成している。 Inside the shell 8, a plate-shaped intermediate wall 9 is disposed at an intermediate portion with its outer circumferential end being supported under pressure between the sealing member 6 and the step portion 5, and the inner space 7 is connected to the front chamber 1.
It is divided into 0 and rear chamber 11. Further, a cylindrical tube portion 12 is integrally formed in the center portion of the intermediate wall 9, and the tube portion 12 extends to the front shell 2 and is externally fitted into a recessed portion 13 formed in the front shell 2. are doing. The recessed portion 13 is a bolt 14 that welds a master cylinder (not shown) to the front shell 2.
A cavity 15 is formed that is large enough for one end of the cylinder body of the master cylinder to fit into when the master cylinder is attached to the front shell 2 using the cylinder body.
上記各室１０，１１には、前方可動壁１６、後
方可動壁１７が各々摺動自在に挿入してあり、各
可動壁１６，１７の前方側に負圧室１８，１９
を、後方側に変圧室２０，２１を各々区画形成し
ている。両負圧室１８，１９は筒部１２の前端に
設けた切欠き２２と筒部１２の内部とを介在して
連絡するとともに前方シエル２の端部に溶接止め
した継手２３を通して図示しない負圧源に常時連
通している。両変圧室２０，２１は、前端を前方
可動壁１６にカシメ止めし、後端を後方可動壁１
７にねじ止めした軸状部材２４に形成したＴ字型
通路２５によつて連絡している。なお、軸状部材
２４は、中間壁９を摺動自在に貫通しているとと
もに、周方向に適宜間隔をもつて複数設けてあり
中間壁９と軸状部材２４との間には、合成樹脂製
のスライドリング２６と、抜止め２７によつて支
持した合成樹脂製の密封部材２８とを各々設けて
ある。また、各可動壁１６，１７とシエル８との
間及び前方可動壁１６と筒部１２との間には、合
成樹脂製のカツプ状の密封部材２９が配置してあ
り、各密封部材２９は弾性力をもつた環状部材３
０によつて内外両リツプを可動壁１６，１７、シ
エル８、筒部１２に向つて各々弾接するようにさ
れている。 A front movable wall 16 and a rear movable wall 17 are slidably inserted into each of the chambers 10 and 11, and negative pressure chambers 18 and 19 are provided in front of each of the movable walls 16 and 17, respectively.
In the rear side, variable pressure chambers 20 and 21 are respectively formed. Both negative pressure chambers 18 and 19 communicate with each other through a notch 22 provided at the front end of the cylindrical portion 12 and the inside of the cylindrical portion 12, and are connected to negative pressure (not shown) through a joint 23 welded to the end of the front shell 2. Always connected to the source. The front ends of both the transformation chambers 20 and 21 are caulked to the front movable wall 16, and the rear ends are caulked to the rear movable wall 1.
Communication is provided by a T-shaped passageway 25 formed in a shaft member 24 screwed to 7. The shaft member 24 slidably passes through the intermediate wall 9, and a plurality of shaft members 24 are provided at appropriate intervals in the circumferential direction. A slide ring 26 made of aluminum and a sealing member 28 made of synthetic resin supported by a retainer 27 are provided. Furthermore, a cup-shaped sealing member 29 made of synthetic resin is arranged between each movable wall 16, 17 and the shell 8 and between the front movable wall 16 and the cylindrical portion 12. Annular member 3 with elastic force
0, both the inner and outer lips are brought into elastic contact with the movable walls 16, 17, the shell 8, and the cylindrical portion 12, respectively.
後方可動壁１７には、ハブ部３１がゴム製の環
状部材３２の剪断強さを利用して取付けられてお
り、このハブ部３１は、内孔３３を有する略筒状
に形成されており、後方の円筒部３４は、後方シ
エル３の開口部３５に、スライドリング３６及び
プーツ３７に一体に設けた密封部材３８を介在し
て摺動自在に嵌合し、シエル８外部に突出してい
る。また、ハブ部３１の前方部分は若干大径とし
て膨出部３９を設けてあり、この膨出部３９の外
周に前述の環状部材３２を圧入する溝４０を形成
している。 A hub portion 31 is attached to the rear movable wall 17 by utilizing the shear strength of an annular member 32 made of rubber, and the hub portion 31 is formed in a substantially cylindrical shape with an inner hole 33. The rear cylindrical portion 34 is slidably fitted into the opening 35 of the rear shell 3 via a sealing member 38 provided integrally with a slide ring 36 and a boot 37, and projects outside the shell 8. Further, the front portion of the hub portion 31 is provided with a bulging portion 39 having a slightly larger diameter, and a groove 40 into which the annular member 32 described above is press-fitted is formed on the outer periphery of the bulging portion 39.
ハプ部３１の内孔３３には、前端にプランジヤ
弁４１を取付けたプツシユロツド４２が嵌合して
おり、このプツシユロツド４２の外周側に、プラ
ンジヤ弁４１の後端に設けた座４３と、内孔３３
内壁に設けた座４４とに着座可能なポペツト弁４
５が配置されており、ポペツト弁４５は、プツシ
ユロツド４２との間に張設した弁ばね４６によつ
て、後端部分を内孔３３内壁の段部４７に圧着支
持され、前端部分を前記各座４３，４４に着座す
るように付勢されている。プランジヤ弁４１は、
膨出部３９に設けた溝状の孔４８内に配置したＵ
字型ストツパ４９によつて、ハブ部３１に対する
軸方向の相対的移動量を制限されるようになつて
いる。このプランジヤ弁４１の前方には、ゴム製
のプレート５０が配置してあり、後端面の一部で
プランジヤ弁４１に、残部でハブ部３１に各々圧
接可能になつており、前端面の全部で出力軸５１
に圧接可能になつている。出力軸５１は、ばね受
け５２により内孔３３から抜け出るのを防止され
ており、減径部５３は前方に延びて凹み部１３に
密封部材５４を介在して摺動自在に嵌合し、減径
部５３の前端がマスタシリンダのピストン（図示
せず）と当接可能になつている。 A push rod 42 with a plunger valve 41 attached to its front end is fitted into the inner hole 33 of the hub portion 31, and a seat 43 provided at the rear end of the plunger valve 41 and a seat 43 provided at the rear end of the plunger valve 41 are fitted on the outer circumferential side of the push rod 42. 33
Poppet valve 4 that can be seated on a seat 44 provided on the inner wall
The poppet valve 45 has a rear end portion crimped and supported by a step portion 47 on the inner wall of the inner hole 33 by a valve spring 46 stretched between the poppet valve 45 and the push rod 42, and a front end portion of the poppet valve 45 that is connected to each of the above-mentioned It is urged to sit on seats 43 and 44. The plunger valve 41 is
U arranged in the groove-shaped hole 48 provided in the bulge 39
The letter-shaped stopper 49 limits the amount of relative movement in the axial direction with respect to the hub portion 31. A rubber plate 50 is arranged in front of the plunger valve 41, and a part of the rear end surface can be pressed against the plunger valve 41, and the rest can be pressed against the hub part 31, and the entire front end surface can be pressed against the plunger valve 41. Output shaft 51
It is now possible to pressure-weld. The output shaft 51 is prevented from coming out of the inner hole 33 by a spring receiver 52, and the reduced diameter portion 53 extends forward and is slidably fitted into the recessed portion 13 with a sealing member 54 interposed therebetween. The front end of the diameter portion 53 can come into contact with a piston (not shown) of a master cylinder.
また、ハブ部３１には、プランジヤ弁４１の外
周側の室５５を変圧室２１に連通する第１通路５
６と、ポペツト弁４５の外周の室５７を負圧室１
９に連絡する通路５８とが各々設けられており、
ポペツト弁４５の内周はフイルタ５９を通して大
気に連通している。 The hub portion 31 also includes a first passage 5 that communicates a chamber 55 on the outer peripheral side of the plunger valve 41 with the variable pressure chamber 21.
6 and a chamber 57 around the poppet valve 45 as a negative pressure chamber 1.
A passage 58 communicating with 9 is provided respectively,
The inner periphery of the poppet valve 45 communicates with the atmosphere through a filter 59.
後方可動壁１７と中間壁９との間及び上記ばね
受け５２と凹み部１３との間には、各々予負荷を
もつたばね６０，６１が各々張設されており、後
方可動壁１７及びハブ部３１を後方に向つて付勢
している。 Preloaded springs 60 and 61 are stretched between the rear movable wall 17 and the intermediate wall 9 and between the spring receiver 52 and the recessed portion 13, respectively, and the rear movable wall 17 and the hub portion 31 toward the rear.
なお、上述の実施例において、ポペツト弁４
５、座４３，４４等は、変圧室２０，２１に供給
する大気量を制御する弁装置を、また、プレート
５０は、出力軸５１からの反力を、ハブ部３１と
プランジヤ弁４１とに所定の比率に分配して伝達
する反力装置を構成する。 In addition, in the above-mentioned embodiment, the poppet valve 4
5. The seats 43, 44, etc. are a valve device that controls the amount of atmospheric air supplied to the variable pressure chambers 20, 21, and the plate 50 is a valve device that controls the amount of atmospheric air supplied to the variable pressure chambers 20, 21. A reaction force device is configured that distributes and transmits the force at a predetermined ratio.
こうした上述の実施例の作動自体は従来のもの
と同様であり、以下に簡単に記す。 The operation of the above-described embodiment itself is similar to the conventional one, and will be briefly described below.
今、非作動状態であるとすると、装置１の各部
材は図示の位置にある。 Assuming that it is now in an inoperative state, each member of the device 1 is in the position shown.
すなわち、ポペツト弁４５がプランジヤ弁４１
の座４３に着座し、かつ、他方の座４４から離座
しているため、変圧室２０，２１は、第１通路５
６，室５５，室５７，第２通路５８を順次介して
負圧室１８，１９に連通している。このため、可
動壁１６，１７の前後に差圧がないので、ばね６
０，６１の付勢力で各可動壁１６，１７が最も後
退した位置にある。 That is, the poppet valve 45 is the plunger valve 41.
Because the person is seated on the seat 43 and is separated from the other seat 44, the pressure-changing chambers 20 and 21 are located in the first passage 5.
6, a chamber 55, a chamber 57, and a second passage 58 in order to communicate with the negative pressure chambers 18 and 19. Therefore, since there is no differential pressure before and after the movable walls 16 and 17, the spring 6
With a biasing force of 0.61, each movable wall 16, 17 is at its most retreated position.
こうした状態で、図示しないペダルからプツシ
ユロツド４２に前方側へ向う押圧力を負荷する
と、ポペツト弁４５が座４４に着座した後座４３
から離座して、変圧室２０，２１が外部に連通し
変圧室２０，２１に大気が供給される。すると、
各可動壁１６，１７の前後に差圧が生じ、ばね６
０，６１に抗して可動壁１６，１７が前進し始
め、出力軸５１によりマスタシリンダのピストン
を押圧し始める。 In this state, when a forward pressing force is applied to the push rod 42 from a pedal (not shown), the poppet valve 45 moves from the rear seat 43 seated on the seat 44.
The variable pressure chambers 20 and 21 are communicated with the outside, and atmospheric air is supplied to the variable pressure chambers 20 and 21. Then,
A pressure difference is generated before and after each movable wall 16, 17, and the spring 6
0 and 61, the movable walls 16 and 17 begin to move forward, and the output shaft 51 begins to press the piston of the master cylinder.
その後、出力軸５１からプレート５０に伝達さ
れる反力と、ハブ部３１からプレート５０に伝達
される作用力とプランジヤ弁４１からプレート５
０に伝達される押圧力との和とが釣り合うと、ポ
ペツト弁４５が両方の座４３，４４に着座し、変
圧室２０，２１を外部及び負圧室１８，１９から
遮断して変圧室２０，２１が一定圧になり、可動
壁１６，１７は一定位置に停止する。 Thereafter, the reaction force transmitted from the output shaft 51 to the plate 50, the acting force transmitted from the hub portion 31 to the plate 50, and the plate 50 from the plunger valve 41.
When the sum of the pressing force transmitted to the 0 and , 21 becomes a constant pressure, and the movable walls 16, 17 stop at a constant position.
装置１の作動を終了させるには、プツシユロツ
ド４２に負荷している押圧力を除けばよく、この
際ポペツト弁４５が座４３に着座したまま座４４
から離座し、変圧室２０，２１内の大気は、負圧
室１８，１９を通つて負圧源に移動し、可動壁１
６，１７の前後の差圧がなくなることによつて、
図示の不作動位置に戻る。 To terminate the operation of the device 1, it is sufficient to remove the pressing force applied to the push rod 42. At this time, the poppet valve 45 remains seated on the seat 43.
The atmosphere in the variable pressure chambers 20 and 21 moves to the negative pressure source through the negative pressure chambers 18 and 19, and the movable wall 1
By eliminating the differential pressure before and after points 6 and 17,
Return to the inoperative position shown.
こうした上述の実施例においては、以下の如き
効果を奏する。 The above-described embodiments have the following effects.
すなわち、中間壁９の中央部分に前方シエル２
に向つて延在する筒部１２を設け、この筒部１２
の内部に向つて凹む凹み部１３にマスタシリンダ
の端部を嵌合可能であるから、マスタシリンダの
端部の位置を装置１の内部側に位置せしめること
によつて装置１にマスタシリンダを組付けたとき
の両者の全長を短かくすることができる。また、
中間壁９の固定は、前後シエル２，３及び密封部
材６によつて行なつているため、その固定構造が
簡単になるとともに、組付けが簡単である。 That is, the front shell 2 is located at the center of the intermediate wall 9.
A cylindrical portion 12 is provided that extends toward the cylindrical portion 12.
Since the end of the master cylinder can be fitted into the recess 13 that is recessed toward the inside of the device, the master cylinder can be assembled into the device 1 by positioning the end of the master cylinder toward the inside of the device 1. The total length of both can be shortened when attached. Also,
Since the intermediate wall 9 is fixed by the front and rear shells 2, 3 and the sealing member 6, the fixing structure is simple and assembly is easy.
更に、前後可動壁１６，１７は、軸状部材２４
を利用して固定し、ハブ部３１を後方可動壁１７
に固定するようにしているため、ハブ部３１に前
方可動壁１６を固定するための何らかの手段を設
ける必要がなく、ハブ部３１の軸方向の長さを短
かくすることができ装置１の短縮が可能である。
また、前後可動壁は、複数の軸状部材で固定して
あるため、その連結状態が堅固である。 Further, the front and rear movable walls 16 and 17 are arranged so that the shaft-like member 24
The hub part 31 is fixed using the rear movable wall 17.
Since the front movable wall 16 is fixed to the hub portion 31, there is no need to provide any means for fixing the front movable wall 16 to the hub portion 31, and the length of the hub portion 31 in the axial direction can be shortened. is possible.
Further, since the front and rear movable walls are fixed by a plurality of shaft-like members, their connection state is solid.
更に、上述した如く、中間壁９はその外周端を
前後シエル２，３及び密封部材６を利用して固定
されるが、中間壁９に一体に設けた筒部１２が凹
み部１３に外嵌するようにしているため、凹み部
１３が中間壁９を組付けるためのガイドとして機
能するのみならず、組付けた後中間壁９を一定位
置に保持するよう機能し、中間壁９が安定して取
付け状態を保持される。従つて、筒部１２の外周
を摺動する前方可動壁１６の前後への移動も確実
に案内される。 Further, as described above, the outer peripheral end of the intermediate wall 9 is fixed using the front and rear shells 2, 3 and the sealing member 6, but the cylindrical portion 12 integrally provided on the intermediate wall 9 is externally fitted into the recessed portion 13. Therefore, the recessed part 13 not only functions as a guide for assembling the intermediate wall 9, but also functions to hold the intermediate wall 9 in a fixed position after it is assembled, so that the intermediate wall 9 is stabilized. The installed state is maintained. Therefore, the forward and backward movement of the front movable wall 16 that slides on the outer periphery of the cylindrical portion 12 is also reliably guided.
第２図は、本発明の他の実施例を示す部分側断
面図である。なお、この実施例においては、第１
図の実施例と異なる点についてのみ説明し、ほぼ
同一の機能等を有するものには第１図のものと同
一の記号を付して説明を略す。 FIG. 2 is a partial side sectional view showing another embodiment of the invention. Note that in this embodiment, the first
Only the points different from the embodiment shown in the figure will be explained, and those having almost the same functions will be given the same symbols as those in FIG. 1, and the explanation will be omitted.
第２図において、シエル８は、段部６３を中間
に形成したコツプ型の前方シエル６４と、皿型の
後方シエル６５とを、前方シエル６４の鍔部６６
と後方シエル６５の段部６７との間でダイヤフラ
ム６８の外周ビード６９を圧縮した状態で結合す
ることによつて形成されている。ダイヤフラム６
８の内周側は膨出部７０を複数設け、膨出部７０
を後方可動壁１７を嵌め込むことにより後方可動
壁１７の前後の負圧室１９及び変圧室２１を各々
区画している。 In FIG. 2, the shell 8 includes a cup-shaped front shell 64 with a step 63 formed in the middle, a saucer-shaped rear shell 65, and a flange 66 of the front shell 64.
It is formed by connecting the outer peripheral bead 69 of the diaphragm 68 to the step portion 67 of the rear shell 65 in a compressed state. diaphragm 6
A plurality of bulges 70 are provided on the inner peripheral side of 8, and the bulges 70
By fitting the rear movable wall 17 into the rear movable wall 17, a negative pressure chamber 19 and a variable pressure chamber 21 are respectively partitioned before and after the rear movable wall 17.
前方可動壁１６にもダイヤフラム６８と同様な
ダイヤフラム７１が膨出部７２を利用して取付け
られており、このダイヤフラム７１の外周ビード
７３は、段部６３と中間壁７４の鍔部７５との間
に挾圧され、前方室１０と後方室１１とを区画す
るとともに、前方可動壁１６の前後の負圧室１８
及び変圧室２０を区画する。 A diaphragm 71 similar to the diaphragm 68 is attached to the front movable wall 16 using a bulging portion 72, and an outer peripheral bead 73 of this diaphragm 71 is located between the step portion 63 and the flange portion 75 of the intermediate wall 74. The front chamber 10 and the rear chamber 11 are divided into negative pressure chambers 18 in front and behind the front movable wall 16.
and partition the variable pressure chamber 20.
中間壁７４は、略円盤状を呈するとともに、凹
み部１３に外嵌した筒部材７６に環状部材７７を
螺着することによつて取付けられている。７８は
密封部材を示す。筒部材７６には略惰円型のフラ
ンジ７９を形成してあり、一部に切欠き８０を設
けてあるとともに、マスタシリンダ取付け用のボ
ルト８１を溶接止めしてある。８２は、ボルト８
１が外部に貫通するようにした孔８３から負圧が
漏れるのを防止するための密封部材である。な
お、筒部材７６と中間壁７４とは、装置１が単体
であるときは、ばね６０の付勢力によつて筒部材
７６が前方シエル６４に当接する位置に付勢さ
れ、マスタシリンダと装置１とをボルト８１を利
用して取付けると、前方シエル６４に対して一体
化される。 The intermediate wall 74 has a substantially disk shape, and is attached by screwing an annular member 77 to a cylindrical member 76 that is externally fitted into the recessed portion 13 . 78 indicates a sealing member. The cylindrical member 76 is formed with a flange 79 having a substantially circular shape, a notch 80 is provided in a part thereof, and a bolt 81 for attaching the master cylinder is welded to the flange 79 . 82 is bolt 8
1 is a sealing member for preventing negative pressure from leaking from a hole 83 that penetrates to the outside. Note that when the device 1 is a single unit, the cylindrical member 76 and the intermediate wall 74 are urged to a position where the cylindrical member 76 contacts the front shell 64 by the urging force of the spring 60, and the master cylinder and the device 1 When these are attached using bolts 81, they are integrated into the front shell 64.
こうした第２図のものは、第１図のものと同様
に作動し、かつ、装置１単体で及びマスタシリン
ダとの組合せで全長を短縮するという効果を奏す
るものである。 The device shown in FIG. 2 operates in the same manner as the device shown in FIG. 1, and has the effect of shortening the overall length of the device 1 alone and in combination with a master cylinder.
以上の実施例によれば、種々の効果を奏してい
るが、本発明は、上述の実施例に限定されること
なく実施可能である。 Although the above embodiments have various effects, the present invention can be implemented without being limited to the above embodiments.
すなわち、前後可動壁を機械的に連結する手段
として、通路付き軸状部材を用いずに、単なる軸
材を用い、その軸材の両端を各可動壁に対して、
螺着、溶接止め、圧入等の適当な手段で取付ける
ようにしてもよく、この際、軸材の一端を固定し
て他端を揺動可能に、また、両端を揺動可能にし
て取付けるようにしてもよい。また、負圧式倍力
装置のみならず、圧縮空気を使用する型式におい
ても本発明を適用可能である。 That is, as a means for mechanically connecting the front and rear movable walls, a simple shaft member is used instead of a shaft member with a passage, and both ends of the shaft member are connected to each movable wall.
It may be attached by any suitable means such as screwing, welding, press-fitting, etc. In this case, one end of the shaft member may be fixed and the other end swingable, or both ends may be swingable. You may also do so. Furthermore, the present invention is applicable not only to negative pressure type boosters but also to types that use compressed air.
第１，２図は、本発明の異なる実施例を示す図
である。
１…タンデム型負圧式倍力装置、８…シエル、
９，７４…中間壁、１２…筒部、１３…凹み部、
１６…前方可動壁、５１…出力軸、７６…筒部
材。
1 and 2 are diagrams showing different embodiments of the present invention. 1...Tandem type negative pressure booster, 8...Ciel,
9, 74... Intermediate wall, 12... Cylinder part, 13... Recessed part,
16... Front movable wall, 51... Output shaft, 76... Cylindrical member.
Claims (1)
方シエルと後方端部を車体に取付けられる後方シ
エルとを密封部材を介在して互いに結合され、内
部に空間を有するシエルと、前記空間を前方室と
後方室とに区分しシエルに固定した中間壁と、前
記両室に各々移動可能に配設して前方に定圧室を
後方に変圧室を各々形成するとともに機械的に連
結された前方可動壁及び後方可動壁と、後方可動
壁に設けシエルの後端を貫通して外部に突出する
ハブ部と、該ハブ部に設けられ前記変圧室と前記
定圧室または外部圧力源との連通遮断を行う弁装
置と、前記ハブ部の前方端部に配置されマスタシ
リンダに出力を伝達する出力軸と、該出力軸と前
記弁装置との間に設けられ出力軸からの反力の一
部を弁装置に伝える反力装置とを備えた気圧式倍
力装置に於いて、前記前方可動壁と後方可動壁と
を前記中間壁を摺動可能に貫通する連結部材によ
り互いに連結し、中間壁の外周端を前記密封部材
に係合させて前記前方シエルと前記後方シエルと
の間で固定し、前記中間壁の中央部から前記出力
軸を囲み前記前方可動壁を相対的に摺動可能に貫
通してシエルまで延在する筒状部を設けるととも
に、当該筒状部に内嵌する凹み部をシエルの前方
端に形成し、前記凹み部にマスタシリンダの端部
を嵌合可能としたタンデム型気圧式倍力装置。1. A front shell to which a master cylinder is attached to the front end and a rear shell to which the rear end is attached to the vehicle body are connected to each other via a sealing member, and the shell has a space inside, and the space is connected to the front chamber and the rear. a front movable wall and a rear movable wall that are movably arranged in each of the two chambers to form a constant pressure chamber in the front and a variable pressure chamber in the rear, and are mechanically connected to each other; a movable wall; a hub portion provided on the rear movable wall and projecting to the outside through penetrating the rear end of the shell; and a valve device provided on the hub portion for cutting off communication between the variable pressure chamber and the constant pressure chamber or an external pressure source. an output shaft disposed at the front end of the hub portion to transmit output to the master cylinder; and an output shaft disposed between the output shaft and the valve device to transmit a portion of the reaction force from the output shaft to the valve device. In the pneumatic booster equipped with a reaction force device, the front movable wall and the rear movable wall are connected to each other by a connecting member that slidably penetrates the intermediate wall, and the outer peripheral end of the intermediate wall is connected to the It is engaged with a sealing member and fixed between the front shell and the rear shell, and extends from the center of the intermediate wall, surrounds the output shaft, and passes through the front movable wall in a relatively slidable manner to the shell. A tandem pneumatic booster having an extending cylindrical part and a recessed part that fits inside the cylindrical part formed at the front end of the shell, so that the end of a master cylinder can be fitted into the recessed part. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55180919A JPS57104457A (en) | 1980-12-19 | 1980-12-19 | Tandem type atmospheric pressure multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55180919A JPS57104457A (en) | 1980-12-19 | 1980-12-19 | Tandem type atmospheric pressure multiplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57104457A JPS57104457A (en) | 1982-06-29 |
| JPH032704B2 true JPH032704B2 (en) | 1991-01-16 |
Family
ID=16091570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55180919A Granted JPS57104457A (en) | 1980-12-19 | 1980-12-19 | Tandem type atmospheric pressure multiplier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57104457A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01212658A (en) * | 1988-02-18 | 1989-08-25 | Tokico Ltd | Tandem type brake booster |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156982A (en) * | 1978-05-31 | 1979-12-11 | Tokico Ltd | Atmospheric pressure type toggle joint |
| JPS5515333A (en) * | 1978-07-18 | 1980-02-02 | Jidosha Kiki Co Ltd | Tandem type brake toggle-joint |
| DE2918914A1 (en) * | 1979-05-10 | 1980-12-11 | Teves Gmbh Alfred | BRAKE POWER AMPLIFIER |
-
1980
- 1980-12-19 JP JP55180919A patent/JPS57104457A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156982A (en) * | 1978-05-31 | 1979-12-11 | Tokico Ltd | Atmospheric pressure type toggle joint |
| JPS5515333A (en) * | 1978-07-18 | 1980-02-02 | Jidosha Kiki Co Ltd | Tandem type brake toggle-joint |
| DE2918914A1 (en) * | 1979-05-10 | 1980-12-11 | Teves Gmbh Alfred | BRAKE POWER AMPLIFIER |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57104457A (en) | 1982-06-29 |
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