JP3400158B2 - Hydraulic pump - Google Patents
Hydraulic pumpInfo
- Publication number
- JP3400158B2 JP3400158B2 JP32707294A JP32707294A JP3400158B2 JP 3400158 B2 JP3400158 B2 JP 3400158B2 JP 32707294 A JP32707294 A JP 32707294A JP 32707294 A JP32707294 A JP 32707294A JP 3400158 B2 JP3400158 B2 JP 3400158B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- plug
- cylinder
- cylinder body
- discharge
- 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
Landscapes
- Details Of Reciprocating Pumps (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、吐出孔が設けられた端
壁を有する円筒状のシリンダ体に、前記端壁の外面との
間に吐出室を形成する有底円筒状のプラグが結合され、
前記吐出孔に通じるポンプ室を前記端壁の内面との間に
形成するプランジャがシリンダ体内に往復摺動可能に嵌
合され、吐出室内には、吐出孔の吐出室側端縁に設けら
れる弁座と、該弁座に着座可能な球状の弁体と、弁座に
着座する方向に弁体を付勢する弁ばねとから成る吐出弁
が収納、配設される液圧ポンプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical cylinder body having an end wall provided with a discharge hole, and a bottomed cylindrical plug for forming a discharge chamber between the end face and the outer surface of the end wall. Is
A plunger forming a pump chamber communicating with the discharge hole between the inner surface of the end wall and the cylinder is reciprocally slidably fitted in the cylinder body, and a valve provided in the discharge chamber at the discharge chamber side end edge of the discharge hole. The present invention relates to a hydraulic pump in which a discharge valve including a seat, a spherical valve body that can be seated on the valve seat, and a valve spring that biases the valve body in the direction of seating on the valve seat is housed and arranged.
【０００２】[0002]
【従来の技術】従来、かかる液圧ポンプは、たとえば実
開平５−６４４８１号公報および特開平２−２４９７４
９号公報等により既に知られている。2. Description of the Related Art Conventionally, such hydraulic pumps have been disclosed, for example, in Japanese Utility Model Laid-Open No. 5-64481 and Japanese Patent Application Laid-Open No. 2-24974.
It is already known from the publication No. 9, etc.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のものでは、
有底円筒状であるプラグの開口端がシリンダ体にかしめ
結合される際に、吐出弁の弁体と、該弁体を付勢する弁
ばねとを、シリンダ体およびプラグ間に組込む作業が煩
雑であり、組付け作業能率が優れたものであるとは言い
難かった。SUMMARY OF THE INVENTION In the above conventional one,
When the open end of the bottomed cylindrical plug is caulked and coupled to the cylinder body, the work of incorporating the valve body of the discharge valve and the valve spring for urging the valve body between the cylinder body and the plug is complicated. It was difficult to say that the assembly work efficiency was excellent.
【０００４】本発明は、かかる事情に鑑みてなされたも
のであり、吐出弁の弁体および弁ばねの組込み作業を容
易として、組付け作業能率を向上させた液圧ポンプを提
供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hydraulic pump in which the work of assembling the valve body and the valve spring of the discharge valve is facilitated and the assembling work efficiency is improved. And
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１記載の発明は、吐出孔が設けられた端壁を
有する円筒状のシリンダ体に、前記端壁の外面との間に
吐出室を形成する有底円筒状のプラグが結合され、前記
吐出孔に通じるポンプ室を前記端壁の内面との間に形成
するプランジャがシリンダ体内に往復摺動可能に嵌合さ
れ、吐出室内には、吐出孔の吐出室側端縁に設けられる
弁座と、該弁座に着座可能な球状の弁体と、弁座に着座
する方向に弁体を付勢する弁ばねとから成る吐出弁が収
納、配設される液圧ポンプにおいて、シリンダ体および
プラグの結合状態では弁体および弁ばねを収納して弁体
の開閉作動を案内すべく吐出室内に配設されるとともに
シリンダ体およびプラグの非結合状態では弁体および弁
ばねを保持し得る円筒状のガイド筒の一端が、シリンダ
体の端壁およびプラグのいずれか一方に固定されること
を特徴とする。In order to achieve the above object, the invention according to claim 1 provides a cylindrical cylinder body having an end wall provided with a discharge hole, between the outer surface of the end wall. A bottomed cylindrical plug that forms a discharge chamber is coupled to the plunger, and a plunger that forms a pump chamber that communicates with the discharge hole between the inner surface of the end wall and the plunger is fitted in the cylinder body so that it can slide back and forth. The chamber is composed of a valve seat provided at the discharge chamber side edge of the discharge hole, a spherical valve body that can be seated on the valve seat, and a valve spring that biases the valve body in the direction of seating on the valve seat. In a hydraulic pump in which a discharge valve is housed and arranged, when the cylinder body and plug are connected, the valve body and the valve spring are housed in the discharge chamber to guide the opening / closing operation of the valve body and the cylinder body. And can hold the valve body and valve spring in the uncoupled state of the plug One end of the cylindrical guide tube, characterized in that fixed to one of the end walls and the plug of the cylinder body.
【０００６】また請求項２記載の発明によれば、上記請
求項１記載の発明の構成に加えて、ガイド筒には、該ガ
イド筒内を吐出室に通じさせる連通孔が設けられ、該連
通孔の全面にわたるフィルタがガイド筒に取付けられ
る。According to a second aspect of the invention, in addition to the structure of the first aspect of the invention, the guide tube is provided with a communication hole for communicating the inside of the guide tube with the discharge chamber, and the communication is performed. A filter covering the entire surface of the hole is attached to the guide tube.
【０００７】さらに請求項３記載の発明によれば、上記
請求項１または２記載の発明の構成に加えて、有底円筒
状に形成されるガイド筒の開口端部がシリンダ体の端壁
に固定され、該ガイド筒の閉塞端および弁体間に弁ばね
が縮設される。According to the third aspect of the invention, in addition to the structure of the first or second aspect of the invention, the open end of the guide cylinder formed in the shape of a bottomed cylinder is formed on the end wall of the cylinder body. The valve spring is fixed and the valve spring is compressed between the closed end of the guide cylinder and the valve body.
【０００８】[0008]
【作用】上記請求項１記載の発明の構成によれば、シリ
ンダ体およびプラグの非結合状態で、吐出弁の弁体およ
び弁ばねを、シリンダ体およびプラグのいずれか一方に
固定されたガイド筒で保持することができるので、シリ
ンダ体およびプラグの結合時に弁体および弁ばねを安定
的に保持して組み込むことが可能となる。According to the structure of the invention described in claim 1, the guide cylinder in which the valve body and the valve spring of the discharge valve are fixed to one of the cylinder body and the plug when the cylinder body and the plug are not connected to each other. Since it can be held by, the valve body and the valve spring can be stably held and incorporated when the cylinder body and the plug are coupled.
【０００９】また上記請求項２記載の発明の構成によれ
ば、フィルタ設置のための余分なスペースを不要として
小型のフィルタによる作動液ろ過を可能とすることがで
きる。Further, according to the configuration of the invention described in claim 2, the extra space for installing the filter is not required, and the working fluid can be filtered by the small filter.
【００１０】さらに上記請求項３記載の発明の構成によ
れば、ガイド筒から脱出することを確実に回避して弁体
および弁ばねをガイド筒内に保持することが可能とな
る。Further, according to the configuration of the invention described in claim 3, it is possible to reliably avoid the escape from the guide cylinder and hold the valve element and the valve spring in the guide cylinder.
【００１１】[0011]
【実施例】以下、図面により本発明の実施例について説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１ないし図３は本発明の第１実施例を示
すものであり、図１はアンチロックブレーキ制御装置の
全体液圧回路図、図２は液圧ポンプの縦断面図、図３は
シリンダ体およびプラグの非結合状態での断面図であ
る。FIGS. 1 to 3 show a first embodiment of the present invention, FIG. 1 is an overall hydraulic circuit diagram of an antilock brake control device, FIG. 2 is a longitudinal sectional view of a hydraulic pump, and FIG. FIG. 6 is a cross-sectional view of a cylinder body and a plug in a non-bonded state.
【００１３】先ず図１において、マスタシリンダＭは、
ブレーキペダル５の踏込みに応じた制動液圧を出力する
出力ポート６を備えており、該出力ポート６と車輪ブレ
ーキＢとの間に、アンチロックブレーキ制御装置７が設
けられる。First, in FIG. 1, the master cylinder M is
An output port 6 for outputting a braking fluid pressure according to the depression of the brake pedal 5 is provided, and an antilock brake control device 7 is provided between the output port 6 and the wheel brake B.
【００１４】このアンチロックブレーキ制御装置７は、
リザーバ８と、該リザーバ８およびマスタシリンダＭの
出力ポート６間に設けられる液圧ポンプ９と、車輪ブレ
ーキＢをマスタシリンダＭの出力ポート６およびリザー
バ８に択一的に切換えて接続可能な切換弁手段１０とを
備える。而してマスタシリンダＭの出力ポート６および
液圧ポンプ９間にはダンパ１１およびオリフィス１２が
接続されるが、ダンパ１１は省略されてもよい。The antilock brake control device 7 is
Reservoir 8, hydraulic pump 9 provided between reservoir 8 and output port 6 of master cylinder M, and wheel brake B are selectively connectable to output port 6 of master cylinder M and reservoir 8 and connectable. And valve means 10. Although the damper 11 and the orifice 12 are connected between the output port 6 and the hydraulic pump 9 of the master cylinder M, the damper 11 may be omitted.
【００１５】切換弁手段１０は、マスタシリンダＭの出
力ポート６および車輪ブレーキＢ間に介設される常開型
電磁弁ＶO と、車輪ブレーキＢおよびリザーバ８間に介
設される常閉型電磁弁ＶC とから成り、常開型電磁弁Ｖ
O には、車輪ブレーキＢ側の液圧がマスタシリンダＭ側
よりも高いときに車輪ブレーキＢ側からマスタシリンダ
Ｍ側への作動液の流通を許容する一方向弁１３が並列に
接続される。The switching valve means 10 is a normally open solenoid valve V O provided between the output port 6 of the master cylinder M and the wheel brake B, and a normally closed solenoid valve provided between the wheel brake B and the reservoir 8. Solenoid valve V C and normally open solenoid valve V
A one-way valve 13 that allows the flow of hydraulic fluid from the wheel brake B side to the master cylinder M side when the hydraulic pressure on the wheel brake B side is higher than the master cylinder M side is connected in parallel to O.
【００１６】液圧ポンプ９には、リザーバ８との間に介
設される吸入弁１４と、マスタシリンダＭの出力ポート
６との間に介設される吐出弁１５とが内蔵される。The hydraulic pump 9 has a built-in suction valve 14 provided between it and the reservoir 8 and a discharge valve 15 provided between it and the output port 6 of the master cylinder M.
【００１７】図２を併せて参照して、液圧ポンプ９は、
金属製の基体１６に配設されるものである。この基体１
６には、該基体１６に取付けられるモータ１８の駆動軸
１９に設けられる駆動カム２０を回転自在に収納する凹
部２１が設けられており、該凹部２１と基体１６の一面
１６ａとの間にわたっては、モータ１８の回転軸線と直
交する軸線を有する取付孔２２が設けられる。而して該
取付孔２２は、凹部２１側から順に段階的に大径となる
第１、第２および第３孔部２２ａ，２２ｂ，２２ｃと、
第３孔部２２ｃよりも大径であるねじ孔部２２ｄとが同
軸に連設されて成るものであり、第２および第３孔部２
２ｂ，２２ｃ間には段部２２ｅが形成される。而して液
圧ポンプ９は、該取付孔２２内に嵌入、固定される。Referring also to FIG. 2, the hydraulic pump 9 is
It is disposed on the metal base 16. This base 1
6 is provided with a recess 21 for rotatably housing a drive cam 20 provided on a drive shaft 19 of a motor 18 attached to the base 16, and a recess 21 is provided between the recess 21 and one surface 16a of the base 16. A mounting hole 22 having an axis orthogonal to the rotation axis of the motor 18 is provided. Thus, the mounting hole 22 has first, second and third hole portions 22a, 22b, 22c which gradually increase in diameter from the concave portion 21 side,
The third hole portion 22c and the screw hole portion 22d having a diameter larger than that of the third hole portion 22c are coaxially connected to each other.
A step 22e is formed between 2b and 22c. Thus, the hydraulic pump 9 is fitted and fixed in the mounting hole 22.
【００１８】液圧ポンプ９は、端壁２４ａを一端に有し
て有底円筒状に形成されるシリンダ体２４と、ポンプ室
２５を前記端壁２４ａの内面との間に形成してシリンダ
体２４内に往復摺動可能に嵌合されるプランジャ２６
と、吐出室２７を前記端壁２４ａの外面との間に形成し
てシリンダ体２４の一端に結合される有底円筒状のプラ
グ２８とを備える。The hydraulic pump 9 has a cylinder body 24 having an end wall 24a at one end and formed in a cylindrical shape with a bottom, and a pump chamber 25 formed between the inner surface of the end wall 24a. Plunger 26 that is reciprocally slidably fitted in 24
And a bottomed cylindrical plug 28 that is connected to one end of the cylinder body 24 by forming a discharge chamber 27 between the discharge chamber 27 and the outer surface of the end wall 24a.
【００１９】シリンダ体２４には、取付孔２２における
段部２２ｅに全周にわたって密接し得る鍔部２４ｂが設
けられる。またプラグ２８は、端壁２４ａを覆うように
してシリンダ体２４の一端にかしめ結合される。而して
相互に結合されたシリンダ体２４およびプラグ２８は、
鍔部２４ｂを段部２２ｅに当接させるまでシリンダ体２
４の他端部を第１孔部２２ａに嵌合させるとともにプラ
グ２８を第３孔部２２ｃに嵌合するようにして取付孔２
２に嵌入され、取付孔２２のねじ孔部２２ｄには、プラ
グ２８に当接する栓部材２９が螺合される。而してシリ
ンダ体２４の鍔部２４ｂを段部２２ｅに圧接させるよう
に栓部材２９を締付けることにより、シリンダ体２４お
よびプラグ２８が取付孔２２内に固定配置されることに
なる。The cylinder body 24 is provided with a collar portion 24b which can be brought into close contact with the step portion 22e of the mounting hole 22 over the entire circumference. The plug 28 is caulked and coupled to one end of the cylinder body 24 so as to cover the end wall 24a. Thus, the cylinder body 24 and the plug 28 connected to each other are
Cylinder body 2 until the collar portion 24b is brought into contact with the step portion 22e
4 is fitted in the first hole 22a and the plug 28 is fitted in the third hole 22c.
The plug member 29 that is fitted into the mounting hole 22 and is in contact with the plug 28 is screwed into the screw hole portion 22d of the mounting hole 22. By tightening the plug member 29 so that the collar portion 24b of the cylinder body 24 is brought into pressure contact with the step portion 22e, the cylinder body 24 and the plug 28 are fixedly arranged in the mounting hole 22.
【００２０】シリンダ体２４およびプラグ２８の取付孔
２２内への嵌入、固定状態で、シリンダ体２４の外面と
第２孔部２２ｂの内面との間には環状吸入路３０が形成
され、シリンダ体２４およびプラグ２８の外面と第３孔
部２２ｃの内面との間には環状吐出路３１が形成され
る。而してシリンダ体２４の外面には、環状吸入路３０
の軸方向内方側をシールすべく第１孔部２２ａの内面に
接触する環状のシール部材３２が装着され、プラグ２８
の外面には環状吐出路３１の軸方向外方側をシールすべ
く第３孔部２２ｃの内面に接触する環状のシール部材３
３が装着される。また環状吸入路３０および環状吐出路
３１間は、鍔部２４ｂが段部２２ｅに全周にわたって密
接したメタルシールによって隔絶される。An annular suction passage 30 is formed between the outer surface of the cylinder body 24 and the inner surface of the second hole portion 22b in a state where the cylinder body 24 and the plug 28 are fitted and fixed in the mounting hole 22. An annular discharge passage 31 is formed between the outer surface of 24 and the plug 28 and the inner surface of the third hole portion 22c. Thus, the annular suction passage 30 is provided on the outer surface of the cylinder body 24.
An annular seal member 32, which comes into contact with the inner surface of the first hole portion 22a, is attached to seal the inner side in the axial direction of the plug 28.
The outer surface of the ring-shaped sealing member 3 is in contact with the inner surface of the third hole 22c to seal the axially outer side of the annular discharge passage 31.
3 is attached. Further, the collar portion 24b is isolated from the annular suction passage 30 and the annular discharge passage 31 by a metal seal that is in close contact with the step portion 22e over the entire circumference.
【００２１】環状吸入路３０はリザーバ８（図１参照）
に接続されており、また環状吐出路３１は、マスタシリ
ンダＭの出力ポート６（図１参照）および常開型電磁弁
ＶO（図１参照）に接続される。The annular suction passage 30 has a reservoir 8 (see FIG. 1).
The annular discharge passage 31 is connected to the output port 6 of the master cylinder M (see FIG. 1) and the normally open solenoid valve V O (see FIG. 1).
【００２２】プランジャ２６は、その一端と端壁２４ａ
の内面との間にポンプ室２５を形成するようにしてシリ
ンダ体２４に摺動自在に嵌合されるものであり、端壁２
４ａおよびプランジャ２６間には戻しばね３４が縮設さ
れる。これによりプランジャ２６の他端部はシリンダ体
２４の他端部から突出し、駆動カム２０に装着されたベ
アリング３５の外輪外面に常時摺接され、モータ１８の
作動に伴う駆動カム２０の回転作動により、プランジャ
２６はその軸線方向に往復駆動される。The plunger 26 has one end and an end wall 24a.
The end wall 2 is slidably fitted into the cylinder body 24 so as to form a pump chamber 25 between the end wall 2 and
A return spring 34 is contracted between 4a and the plunger 26. As a result, the other end of the plunger 26 projects from the other end of the cylinder body 24 and is always in sliding contact with the outer surface of the outer race of the bearing 35 mounted on the drive cam 20. The plunger 26 is reciprocally driven in the axial direction.
【００２３】プランジャ２６には、その軸方向往復作動
位置にかかわらず環状吸入路３０に常時連通する吸入孔
３６が同軸に設けられており、吸入弁１４は、ポンプ室
２５の減・増圧に応じて吸入孔３６を開閉するようにポ
ンプ室２５に収納、配設される。すなわち吸入弁１４
は、吸入孔３６のポンプ室２５側の端縁に設けられる弁
座３７と、弁座３７に着座可能としてポンプ室２５内に
収納される球状の弁体３８と、弁座３７に着座する方向
に弁体３８を付勢して端壁２４ａおよび弁体３８間に縮
設される弁ばね３９とから成る。The plunger 26 is coaxially provided with a suction hole 36 which is always in communication with the annular suction passage 30 regardless of its axial reciprocating position. The suction valve 14 serves to reduce or increase the pressure in the pump chamber 25. Accordingly, the suction hole 36 is housed and arranged in the pump chamber 25 so as to open and close. That is, the intake valve 14
Is a valve seat 37 provided at the edge of the suction hole 36 on the pump chamber 25 side, a spherical valve element 38 that is seatable in the valve seat 37 and accommodated in the pump chamber 25, and a direction in which the valve seat 37 is seated. And a valve spring 39 compressed between the end wall 24a and the valve body 38 by urging the valve body 38.
【００２４】シリンダ体２４における端壁２４ａには、
ポンプ室２５に通じる吐出孔４０がシリンダ体２４と同
軸に設けられており、吐出弁１５は、ポンプ室２５の増
・減圧に応じて吐出孔４０を開閉するように吐出室２７
に収納、配設される。すなわち吐出弁１５は、吐出孔４
０の吐出室２７側端縁に設けられる弁座４１と、弁座４
１に着座可能である球状の弁体４２と、弁座４１に着座
する方向に弁体４２を付勢するばね力を発揮してプラグ
２８および弁体４２間に縮設される弁ばね４３とから成
る。On the end wall 24a of the cylinder body 24,
A discharge hole 40 communicating with the pump chamber 25 is provided coaxially with the cylinder body 24, and the discharge valve 15 opens and closes the discharge hole 40 according to the increase / decrease in pressure of the pump chamber 25.
It is stored and arranged in. That is, the discharge valve 15 includes the discharge hole 4
0, the valve seat 41 provided at the edge of the discharge chamber 27 side, and the valve seat 4
1. A spherical valve body 42 that can be seated on the valve seat 1, and a valve spring 43 that is compressed between the plug 28 and the valve body 42 by exerting a spring force that urges the valve body 42 in the direction in which the valve seat 41 is seated. Consists of.
【００２５】ところで、プラグ２８には、シリンダ体２
４およびプラグ２８を結合した状態では、吐出室２７内
に収納、配設されるとともに、吐出弁１５における弁体
４２および弁ばね４３を収納して弁体４２の開閉作動を
案内するガイド筒４５1 の一端が固定される。このガイ
ド筒４５1 は、たとえば合成樹脂により円筒状に形成さ
れるものであり、プラグ２８の閉塞端寄り内面に設けら
れた嵌合凹部２８ａに、軽圧入するようにしてガイド筒
４５1 の一端がプラグ２８に固定される。しかもガイド
筒４５1 の周方向に間隔をあけた複数個所には連通孔４
６…が設けられており、それらの連通孔４６…の全面に
わたるフィルタ４７…がガイド筒４５1に取付けられ
る。By the way, the plug 28 has a cylinder body 2
In the state where the plug 4 and the plug 28 are connected, the guide cylinder 45 is housed and arranged in the discharge chamber 27, and also houses the valve body 42 and the valve spring 43 of the discharge valve 15 to guide the opening / closing operation of the valve body 42. One end of 1 is fixed. The guide cylinder 45 1 is formed of, for example, a synthetic resin into a cylindrical shape, and one end of the guide cylinder 45 1 is lightly press-fitted into a fitting recess 28 a provided on the inner surface of the plug 28 near the closed end. Are fixed to the plug 28. Moreover, the communication holes 4 are provided at a plurality of locations spaced apart in the circumferential direction of the guide cylinder 45 1.
6 are provided, and filters 47 are provided over the entire surfaces of the communication holes 46 ... Are attached to the guide cylinder 45 1 .
【００２６】図３において、前記ガイド筒４５1 は、シ
リンダ体２４およびプラグ２８の非結合状態では、弁体
４２および弁ばね４３を保持し得るものである。すなわ
ち一端をプラグ２８に当接させた弁ばね４３の自由状態
で、該弁ばね４３の他端に当接した球状の弁体４２の略
半分をガイド筒４５1 内に位置させ得るように、ガイド
筒４５1 の軸方向長さが設定される。In FIG. 3, the guide cylinder 45 1 can hold the valve body 42 and the valve spring 43 when the cylinder body 24 and the plug 28 are not connected. That is, in a free state of the valve spring 43 whose one end is in contact with the plug 28, approximately half of the spherical valve body 42 which is in contact with the other end of the valve spring 43 can be positioned in the guide cylinder 45 1 . The axial length of the guide cylinder 45 1 is set.
【００２７】またプラグ２８の周方向に間隔をあけた位
置には、吐出室２７を環状吐出路３１に連通させるため
の複数の通路孔４８…が設けられる。A plurality of passage holes 48 for communicating the discharge chamber 27 with the annular discharge passage 31 are provided at positions spaced from each other in the circumferential direction of the plug 28.
【００２８】次にこの第１実施例の作用について説明す
ると、シリンダ体２４およびプラグ２８をかしめ結合す
る前に、シリンダ体２４およびプラグ２８間に形成され
る吐出室２７内に配設される吐出弁１５の構成要素たる
弁体４２および弁ばね４３は、プラグ２８に一端を固定
されたガイド筒４５1 に保持されるので、図３で示すよ
うに、プラグ２８側に弁体４２および弁ばね４３を安定
的に保持した状態で、シリンダ体２３４およびプラグ２
８のかしめ結合を行うことができ、弁体４２および弁ば
ね４３の煩雑な組み込み作業を不要として、組付け作業
能率を向上することができる。The operation of the first embodiment will now be described. Before the cylinder body 24 and the plug 28 are caulked and connected, the discharge provided in the discharge chamber 27 formed between the cylinder body 24 and the plug 28. Since the valve element 42 and the valve spring 43, which are the components of the valve 15, are held by the guide cylinder 45 1 whose one end is fixed to the plug 28, as shown in FIG. 3, the valve element 42 and the valve spring are arranged on the plug 28 side. While holding 43 stably, the cylinder body 234 and the plug 2
8 can be caulked, and the complicated work of assembling the valve body 42 and the valve spring 43 can be eliminated, and the assembling work efficiency can be improved.
【００２９】しかもシリンダ体２４およびプラグ２８の
結合完了後、ガイド筒４５1 は弁体４２の開閉作動を案
内するものであり、吐出弁１５の作動に支障を来すこと
はなく、しかもガイド筒４５1 にフィルタ４７…が取付
けられることにより、フィルタ設置のための余分なスペ
ースを不要として小型のフィルタ４７…による作動液ろ
過が可能となる。Moreover, after the cylinder body 24 and the plug 28 are completely coupled, the guide cylinder 45 1 guides the opening / closing operation of the valve body 42, so that the operation of the discharge valve 15 is not hindered, and the guide cylinder 45 1 By attaching the filters 47 to 45 1 , it is possible to filter the working fluid by the small filters 47 without requiring an extra space for installing the filters.
【００３０】図４は本発明の第２実施例を示すものであ
り、上記第１実施例に対応する部分には同一の参照符号
を付す。FIG. 4 shows a second embodiment of the present invention, in which parts corresponding to those in the first embodiment are designated by the same reference numerals.
【００３１】シリンダ体２４における端壁２４ａの外面
側には、吐出孔４０を囲撓する円筒状の突部４９が吐出
室２７側に突出して設けられており、たとえば合成樹脂
により有底円筒状に形成されたガイド筒４５2 の開口端
部が、前記突部４９をガイド筒４５2 内に軽圧入せしめ
ることにより、端壁２４ａに固定される。On the outer surface side of the end wall 24a of the cylinder body 24, a cylindrical projection 49 surrounding the discharge hole 40 is provided so as to project toward the discharge chamber 27. For example, a cylindrical bottomed cylinder made of synthetic resin is provided. The open end of the guide cylinder 45 2 formed in the above is fixed to the end wall 24 a by lightly press-fitting the protrusion 49 into the guide cylinder 45 2 .
【００３２】而してこのガイド筒４５2 内には、吐出弁
１５の構成要素たる弁体４２および弁ばね４３が収納さ
れるものであり、弁ばね４３は、ガイド筒４５2 の閉塞
端および弁体４２間に縮設される。[0032] The Thus to the guide tube 45 in 2, which components serving the valve body 42 and the valve spring 43 of the discharge valve 15 is accommodated, a valve spring 43, the closed end of the guide tube 45 2 and It is contracted between the valve bodies 42.
【００３３】またガイド筒４５2 に、ガイド筒４５2 内
を吐出室２７内に通じさせる複数の連通孔４６…が設け
られるとともに、それらの連通孔４６…の全面にわたる
フィルタ４７…が取付けられるのは、上記第１実施例と
同様である。Further to the guide tube 45 2, a plurality of communication holes 46 ... to let through the guide tube 45 within 2 into the discharge chamber 27 is provided, the filter 47 ... are mounted over their passage 46 ... entire Is similar to the first embodiment.
【００３４】この第２実施例によれば、弁体４２および
弁ばね４３をガイド筒４５2 内に確実に保持することが
でき、組付け作業がより容易となる。According to the second embodiment, the valve element 42 and the valve spring 43 can be securely held in the guide cylinder 45 2 and the assembling work becomes easier.
【００３５】以上、本発明の実施例を説明したが、本発
明は上記実施例に限定されるものではなく、特許請求の
範囲に記載された本発明を逸脱することなく種々の設計
変更を行うことが可能である。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible.
【００３６】たとえば、吸入弁１４がシリンダ体２４に
設けられていてもよい。For example, the suction valve 14 may be provided in the cylinder body 24.
【００３７】[0037]
【発明の効果】以上のように請求項１記載の発明によれ
ば、シリンダ体およびプラグの結合状態では弁体および
弁ばねを収納して弁体の開閉作動を案内すべく吐出室内
に配設されるとともにシリンダ体およびプラグの非結合
状態では弁体および弁ばねを保持し得る円筒状のガイド
筒の一端が、シリンダ体の端壁およびプラグのいずれか
一方に固定されるので、シリンダ体およびプラグの結合
作業を行う際に、弁体および弁ばねをガイド筒で安定的
に保持して組み込むことができ、組付け作業能率を向上
することができ、シリンダ体およびプラグの結合完了後
には弁体の開閉作動をガイド筒で案内することができ
る。As described above, according to the first aspect of the invention, the valve body and the valve spring are housed in the connected state of the cylinder body and the plug to guide the opening / closing operation of the valve body in the discharge chamber. In addition, since one end of the cylindrical guide cylinder that can hold the valve body and the valve spring when the cylinder body and the plug are not connected is fixed to either one of the end wall of the cylinder body and the plug, When connecting the plug, the valve body and the valve spring can be stably held by the guide tube and installed, which can improve the assembly work efficiency. The guide tube can guide the opening and closing operation of the body.
【００３８】また請求項２記載の発明によれば、上記請
求項１記載の発明の構成に加えて、ガイド筒には、該ガ
イド筒内を吐出室に通じさせる連通孔が設けられ、該連
通孔の全面にわたるフィルタがガイド筒に取付けられる
ので、フィルタ設置のための余分なスペースを不要と
し、小型のフィルタによる作動液ろ過を可能とすること
ができる。According to the invention described in claim 2, in addition to the structure of the invention described in claim 1, the guide cylinder is provided with a communication hole for communicating the inside of the guide cylinder with the discharge chamber, and the communication is performed. Since the filter covering the entire surface of the hole is attached to the guide cylinder, an extra space for installing the filter is not required, and the working fluid can be filtered by a small filter.
【００３９】さらに請求項３記載の発明によれば、上記
請求項１または２記載の発明の構成に加えて、有底円筒
状に形成されるガイド筒の開口端部がシリンダ体の端壁
に固定され、該ガイド筒の閉塞端および弁体間に弁ばね
が縮設されるので、弁体および弁ばねをガイド筒内に確
実に保持して組付け作業をより容易とすることができ
る。Further, according to the invention of claim 3, in addition to the structure of the invention of claim 1 or 2, the open end of the guide cylinder formed in a bottomed cylindrical shape is provided on the end wall of the cylinder body. Since the valve spring is fixed and the valve spring is contracted between the closed end of the guide cylinder and the valve body, the valve body and the valve spring can be securely held in the guide cylinder to facilitate the assembling work.
【図１】第１実施例のアンチロックブレーキ制御装置の
全体液圧回路図である。FIG. 1 is an overall hydraulic circuit diagram of an antilock brake control device according to a first embodiment.
【図２】液圧ポンプの縦断面図である。FIG. 2 is a vertical sectional view of a hydraulic pump.
【図３】シリンダ体およびプラグの非結合状態での断面
図である。FIG. 3 is a cross-sectional view of a cylinder body and a plug in a non-bonded state.
【図４】第２実施例の液圧ポンプの縦断面図である。FIG. 4 is a vertical sectional view of a hydraulic pump according to a second embodiment.
９・・・液圧ポンプ １５・・・吐出弁 ２４・・・シリンダ体 ２４ａ・・・端壁 ２５・・・ポンプ室 ２６・・・プランジャ ２７・・・吐出室 ２８・・・プラグ ４０・・・吐出孔 ４１・・・弁座 ４２・・・弁体 ４３・・・弁ばね ４５1 ，４５2 ・・・ガイド筒 ４６・・・連通孔 ４７・・・フィルタ9 ... Hydraulic pump 15 ... Discharge valve 24 ... Cylinder body 24a ... End wall 25 ... Pump chamber 26 ... Plunger 27 ... Discharge chamber 28 ... Plug 40 ... Discharge hole 41 ... Valve seat 42 ... Valve body 43 ... Valve springs 45 1 , 45 2 ... Guide cylinder 46 ... Communication hole 47 ... Filter
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F04B 1/00 - 7/06 F04B 21/00 - 23/14 Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) F04B 1/00-7/06 F04B 21/00-23/14
Claims (3)
ａ）を有する円筒状のシリンダ体（２４）に、前記端壁
（２４ａ）の外面との間に吐出室（２７）を形成する有
底円筒状のプラグ（２８）が結合され、前記吐出孔（４
０）に通じるポンプ室（２５）を前記端壁（２４ａ）の
内面との間に形成するプランジャ（２６）がシリンダ体
（２４）内に往復摺動可能に嵌合され、吐出室（２７）
内には、吐出孔（４０）の吐出室（２７）側端縁に設け
られる弁座（４１）と、該弁座（４１）に着座可能な球
状の弁体（４２）と、弁座（４１）に着座する方向に弁
体（４２）を付勢する弁ばね（４３）とから成る吐出弁
（１５）が収納、配設される液圧ポンプにおいて、シリ
ンダ体（２４）およびプラグ（２８）の結合状態では弁
体（４２）および弁ばね（４３）を収納して弁体（４
２）の開閉作動を案内すべく吐出室（２７）内に配設さ
れるとともにシリンダ体（２４）およびプラグ（２８）
の非結合状態では弁体（４２）および弁ばね（４３）を
保持し得る円筒状のガイド筒（４５1 ，４５2 ）の一端
が、シリンダ体（２４）の端壁（２４ａ）およびプラグ
（２８）のいずれか一方に固定されることを特徴とする
液圧ポンプ。1. An end wall (24) provided with a discharge hole (40).
a cylindrical cylinder body (24) having a) is joined with a bottomed cylindrical plug (28) forming a discharge chamber (27) between the cylindrical body (24) and the outer surface of the end wall (24a). (4
A plunger (26) forming a pump chamber (25) communicating with 0) between the inner surface of the end wall (24a) is reciprocally slidably fitted in the cylinder body (24), and a discharge chamber (27).
Inside, a valve seat (41) provided at the end of the discharge hole (40) on the discharge chamber (27) side, a spherical valve body (42) seatable on the valve seat (41), and a valve seat ( In a hydraulic pump in which a discharge valve (15) consisting of a valve spring (43) for urging the valve body (42) in a direction to be seated in (41) is housed and arranged, a cylinder body (24) and a plug (28). ) In the coupled state, the valve body (42) and the valve spring (43) are housed and the valve body (4
The cylinder body (24) and the plug (28) are arranged in the discharge chamber (27) to guide the opening / closing operation of 2).
Of the cylindrical guide cylinders (45 1 , 45 2 ) capable of holding the valve body (42) and the valve spring (43) in the uncoupled state of ( 1 ), the end wall (24a) of the cylinder body (24) and the plug ( A hydraulic pump characterized by being fixed to either one of 28).
イド筒（４５1 ，４５2 ）内を吐出室（２７）に通じさ
せる連通孔（４６）が設けられ、該連通孔（４６）の全
面にわたるフィルタ（４７）がガイド筒（４５1 ，４５
2 ）に取付けられることを特徴とする請求項１記載の液
圧ポンプ。2. The guide cylinder (45 1 , 45 2 ) is provided with a communication hole (46) for communicating the inside of the guide cylinder (45 1 , 45 2 ) with the discharge chamber (27). over the entire surface filter (47) the guide sleeve 46) (45 1, 45
The hydraulic pump according to claim 1, wherein the hydraulic pump is attached to 2 ).
2 ）の開口端部がシリンダ体（２４）の端壁（２４ａ）
に固定され、該ガイド筒（４５2 ）の閉塞端および弁体
（４２）間に弁ばね（４３）が縮設されることを特徴と
する請求項１または２記載の液圧ポンプ。3. A guide cylinder (45) formed in a bottomed cylindrical shape.
The open end of 2 ) is the end wall (24a) of the cylinder body (24).
The hydraulic pump according to claim 1 or 2, characterized in that a valve spring (43) is fixed between the closed end of the guide cylinder (45 2 ) and the valve body (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32707294A JP3400158B2 (en) | 1994-12-28 | 1994-12-28 | Hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32707294A JP3400158B2 (en) | 1994-12-28 | 1994-12-28 | Hydraulic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08177751A JPH08177751A (en) | 1996-07-12 |
| JP3400158B2 true JP3400158B2 (en) | 2003-04-28 |
Family
ID=18194981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32707294A Expired - Lifetime JP3400158B2 (en) | 1994-12-28 | 1994-12-28 | Hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3400158B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001501283A (en) * | 1997-07-30 | 2001-01-30 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Piston pump |
| JP4705551B2 (en) * | 2006-10-30 | 2011-06-22 | 日信工業株式会社 | Reciprocating pump |
-
1994
- 1994-12-28 JP JP32707294A patent/JP3400158B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08177751A (en) | 1996-07-12 |
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