JPS6320863Y2 - - Google Patents
Info
- Publication number
- JPS6320863Y2 JPS6320863Y2 JP18131582U JP18131582U JPS6320863Y2 JP S6320863 Y2 JPS6320863 Y2 JP S6320863Y2 JP 18131582 U JP18131582 U JP 18131582U JP 18131582 U JP18131582 U JP 18131582U JP S6320863 Y2 JPS6320863 Y2 JP S6320863Y2
- Authority
- JP
- Japan
- Prior art keywords
- swash plate
- roller bearing
- cylindrical guide
- guide part
- stopper
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/502—Other types of ball or roller bearings with rolling elements in rows not forming a full circle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/306—Means to synchronise movements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
Description
【考案の詳細な説明】
本考案は斜板式可変容量形ポンプの斜板を回転
自在に支承する斜板支持装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swash plate support device that rotatably supports the swash plate of a swash plate type variable displacement pump.
一般にこの種の斜板支持装置の軸受は、斜板の
揺動摩擦抵抗を小さくするため、斜板の凸筒状案
内部を内輪とし機体の凹筒状案内部を外輪とした
円弧状のコロ軸受が使用されている。しかし、か
かるコロ軸受は斜板の振動、コロの弾性変形等に
よる自由の動きで次第に位置がずれて軌道面から
はずれることがある。これを防ぐため、強制的に
ストツパで制限すると、斜板の回転においてコロ
軸受がストツパに当接した後は転動しないコロ上
を斜板がすべる結果、大きな摩擦力が生じ軸受が
損傷されることがあつた。そこで、第1図に示す
ようにコロ軸受1の一つのコロ2と斜板3に回転
自在に設けた枢軸4にロツド5を進退自在に挿入
し、このロツドの一端を折曲げてこれを機体6の
穴7に挿入したものが提案された。このもので
は、ロツド5は斜板3の回転によりコロ2及び枢
軸4の回転を得て穴7を中心に回転するので、コ
ロ軸受1は斜板3に追従することになる。 Generally, in order to reduce the swaying frictional resistance of the swash plate, the bearings of this type of swash plate support device use arc-shaped roller bearings with the convex cylindrical guide of the swash plate as the inner ring and the concave cylindrical guide of the machine body as the outer ring. However, such roller bearings can gradually shift position and come off the raceway due to free movement caused by vibration of the swash plate and elastic deformation of the rollers. If a stopper is used to prevent this, the swash plate will slide on the rollers that do not roll after the roller bearing abuts against the stopper during the rotation of the swash plate, resulting in large frictional forces and damage to the bearing. Therefore, a proposal has been made to insert a rod 5 freely moving back and forth into a pivot 4 rotatably provided on one roller 2 of a roller bearing 1 and a swash plate 3, as shown in Figure 1, and one end of the rod is bent and inserted into a hole 7 of the machine body 6. In this type, the rod 5 rotates around the hole 7 by the rotation of the roller 2 and the pivot 4 due to the rotation of the swash plate 3, so that the roller bearing 1 follows the swash plate 3.
しかしながらロツド5によつて転動できないコ
ロ2は、コロ軸受1のコロ8と同径にするとすべ
り摩擦が生じて早期に損傷せしめられ、これを避
けるためコロ8より小径にすると、軸受機能を衷
失する結果、他のコロの分担荷重が増大しコロ軸
受が大型化する。加えて、このコロ軸受はロツド
を組付ける特殊構造のために高価になる欠点があ
つた。 However, if the rollers 2, which cannot be rolled by the rods 5, are made the same diameter as the rollers 8 of the roller bearing 1, sliding friction will occur and early damage will occur.To avoid this, if the rollers 2 are made smaller in diameter than the rollers 8, the bearing function will be improved. As a result, the load shared by other rollers increases and the roller bearing becomes larger. In addition, this roller bearing had the disadvantage of being expensive due to the special structure in which the rods were assembled.
本考案は、前記の欠点を改善することを目的と
したもので、斜板の凸筒状案内部とこれに対応す
る機体の凹筒状案内部との間に凸筒状案内部を内
輪とし凹筒状案内部を外輪とした円弧状のコロ軸
受を介装したものにおいて、前記コロ軸受の両端
にそれぞれ中間をコロ軸受端に当接し両端側を機
体と斜板とに設ける支持部に支持されて回転と長
さ方向の移動が可能となる弾力を有するストツパ
を配設したことを特徴とするものである。 The purpose of the present invention is to improve the above-mentioned drawbacks, and the present invention uses a convex cylindrical guide part as an inner ring between the convex cylindrical guide part of the swash plate and the corresponding concave cylindrical guide part of the fuselage. An arc-shaped roller bearing with a concave cylindrical guide as an outer ring is installed, and the roller bearing is supported at both ends by a support part provided on the fuselage and the swash plate, with the intermediate part abutting the roller bearing end, and both ends supported by support parts provided on the fuselage and the swash plate. The device is characterized in that a resilient stopper is provided that allows rotation and movement in the longitudinal direction.
以下本考案を図面に示す実施例に基いて具体的
に説明する。第2図において、11は斜板式可変
容量形ポンプの駆動軸〔油圧モータとして使用す
るときは出力軸〕、12は駆動軸11に軸着され
たシリンダブロツク、13はシリンダブロツク1
2に嵌挿されたピストン、14はピストン13に
取付けられたシユー15が摺動回転する斜板で、
その凸筒状案内部16を機体17の凹筒状案内部
18に対向させ、機体17との間に凸筒状案内部
16を内輪とし凹筒状案内部18を外輪とした円
弧状のコロ軸受19を介装している。 The present invention will be specifically described below based on embodiments shown in the drawings. In FIG. 2, 11 is the drive shaft of the swash plate type variable displacement pump (output shaft when used as a hydraulic motor), 12 is the cylinder block pivotally attached to the drive shaft 11, and 13 is the cylinder block 1.
A piston 14 is fitted into the piston 2, and a swash plate 14 is a swash plate on which a shoe 15 attached to the piston 13 slides and rotates.
The convex cylindrical guide part 16 is opposed to the concave cylindrical guide part 18 of the body 17, and an arc-shaped roller is formed between the convex cylindrical guide part 16 as an inner ring and the concave cylindrical guide part 18 as an outer ring. A bearing 19 is interposed.
さらに、本実施例においては、コロ軸受19の
両端に、中間がコロ軸受19端と当接するか、又
はわずかの隙間をおいて対向するストツパ21を
配置する。このストツパ21は一端を斜板14に
軸着した支軸22に回転可能に取付け、他端部を
機体17に軸着した支軸23のコロ軸受側側部に
当接するもので、支軸22と23の位置は、スト
ツパ21が斜板14と略同期して移動するコロ軸
受19の端面に添うように選定する。しかして、
ストツパ21は適度の弾力を有する板体で、斜板
14の振動、コロの弾性変形等によるコロ軸受1
9の自由な動きに対してストツパの弾性変形によ
る押戻し力で対抗しコロ軸受の移動量を規制して
いる。 Furthermore, in this embodiment, stoppers 21 are disposed at both ends of the roller bearing 19, with the intermediate portions abutting against the ends of the roller bearing 19, or facing each other with a slight gap therebetween. This stopper 21 has one end rotatably attached to a support shaft 22 that is pivoted to the swash plate 14, and the other end that comes into contact with the roller bearing side of a support shaft 23 that is pivoted to the fuselage 17. The positions of and 23 are selected so that the stopper 21 is along the end face of the roller bearing 19, which moves substantially synchronously with the swash plate 14. However,
The stopper 21 is a plate with moderate elasticity, and the roller bearing 1 is caused by vibration of the swash plate 14, elastic deformation of the rollers, etc.
The free movement of the roller bearing 9 is counteracted by the pushing back force generated by the elastic deformation of the stopper, thereby regulating the amount of movement of the roller bearing.
本実施例は前記するような構成であるから、ポ
ンプ吐出流量を減少させるべく、図示最大傾転角
度位置にある斜板14を時計方向に回転させる
と、コロ軸受19はその両端のストツパ21で挾
持される形で斜板14と同期移動することにな
る。これがため、コロ軸受19の移動量は斜板1
4の凸筒状案内面24の移動量の1/2となりコロ
軸受19は転動するためすべり摩擦力は発生しな
い。又、斜板14の振動等によるコロ軸受19の
自由な移動は、両側のストツパ21により規制さ
れるため、コロ軸受19の位置ずれの問題は解消
する。 Since this embodiment has the above-described configuration, when the swash plate 14, which is at the maximum tilt angle position shown in the figure, is rotated clockwise in order to reduce the pump discharge flow rate, the roller bearing 19 is rotated by the stoppers 21 at both ends thereof. It moves synchronously with the swash plate 14 while being held in place. Therefore, the amount of movement of the roller bearing 19 is
Since the roller bearing 19 rolls by half the amount of movement of the convex cylindrical guide surface 24 of No. 4, no sliding friction force is generated. Furthermore, the free movement of the roller bearing 19 due to vibration of the swash plate 14 is restricted by the stoppers 21 on both sides, so the problem of misalignment of the roller bearing 19 is solved.
第4図に示すものはいま一つの実施例で、スト
ツパ25はその中間部26をコロ軸受19端に当
接するようにすると共に、その両側を互いに反対
方向に直角に折曲げ、さらに一端を直角に折曲げ
この折曲げ部27を斜板14の半径方向の溝28
に嵌挿し、他端部29は機体17に回転自在に嵌
挿した支軸30の横孔31に挿通する。しかし
て、溝28及び支軸30の位置は、ストツパ25
が斜板14と略同期して移動するコロ軸受19の
端面に添うように選定している。 The one shown in FIG. 4 is another embodiment of the stopper 25, in which the intermediate portion 26 is brought into contact with the end of the roller bearing 19, both sides of which are bent at right angles in opposite directions, and one end is bent at right angles. The bent portion 27 is inserted into the radial groove 28 of the swash plate 14.
The other end 29 is inserted into a horizontal hole 31 of a support shaft 30 rotatably fitted into the body 17. Therefore, the position of the groove 28 and the support shaft 30 is determined by the stopper 25.
is selected so that it follows the end face of the roller bearing 19 which moves substantially in synchronization with the swash plate 14.
この実施例においては、斜板14の回転により
ストツパ25の折曲げ部27は斜板14の溝28
上を摺動し他端側は支軸30を中心に回転すると
共に、長さ方向に移動して中間部26がコロ軸受
19端に沿うため、コロ軸受19はその両端のス
トツパ25で挾持される形で斜板14と同期移動
する。これがため、第2図に示した実施例と同様
の作用が得られる。 In this embodiment, as the swash plate 14 rotates, the bent portion 27 of the stopper 25 is inserted into the groove 27 of the swash plate 14.
The roller bearing 19 is clamped by the stoppers 25 at both ends of the roller bearing 19 because the intermediate portion 26 slides on the top and the other end rotates around the support shaft 30 and moves in the length direction so that the intermediate portion 26 follows the end of the roller bearing 19. It moves synchronously with the swash plate 14 in such a manner. Therefore, the same effect as the embodiment shown in FIG. 2 can be obtained.
以上説明したように本考案においては、コロ軸
受はその両側に位置する一対のストツパに挾持さ
れる形で斜板と同期移動するので、コロ軸受はす
べり摩擦力により損傷されることがない。又、コ
ロ軸受の自由な移動が規制されているため、コロ
軸受の位置ずれの問題は解決する。又、コロ軸受
はストツパ等の取付けを必要としないため小型且
つ安価に製作をすることができる。 As explained above, in the present invention, the roller bearing moves synchronously with the swash plate while being held by a pair of stoppers located on both sides of the roller bearing, so that the roller bearing is not damaged by sliding frictional force. Furthermore, since the free movement of the roller bearings is restricted, the problem of misalignment of the roller bearings is solved. Further, since the roller bearing does not require the installation of a stopper or the like, it can be manufactured in a small size and at low cost.
第1図は従来品の側面図、第2図は本考案の実
施例を示す側面図、第3図は第2図におけるA−
A線断面図、第4図は本考案のいま一つの実施例
を示す側面図、第5図は第4図におけるB−B線
断面図である。
12……シリンダブロツク、14……斜板、1
6……凸筒状案内部、17……機体、18……凹
筒状案内部、19……コロ軸受、21,25……
ストツパ、22,23,30……支軸、28……
溝。
Fig. 1 is a side view of the conventional product, Fig. 2 is a side view showing the embodiment of the present invention, and Fig. 3 is A--A in Fig. 2.
4 is a side view showing another embodiment of the present invention, and FIG. 5 is a sectional view taken along line B--B in FIG. 4. 12...Cylinder block, 14...Swash plate, 1
6... Convex cylindrical guide part, 17... Body, 18... Concave cylindrical guide part, 19... Roller bearing, 21, 25...
Stopper, 22, 23, 30... Support shaft, 28...
groove.
Claims (1)
筒状案内部との間に凸筒状案内部を内輪とし凹筒
状案内部を外輪とした円弧状のコロ軸受を介装し
たものにおいて、前記コロ軸受の両端にそれぞれ
中間をコロ軸受端に当接し両端側を機体と斜板と
に設ける支持部に支持されて回転と長さ方向の移
動が可能となる弾力を有するストツパを配設した
ことを特徴とする斜板式可変容量形ポンプの斜板
支持装置。 An arc-shaped roller bearing is interposed between the convex cylindrical guide part of the swash plate and the corresponding concave cylindrical guide part of the body, with the convex cylindrical guide part as the inner ring and the concave cylindrical guide part as the outer ring. In the above-mentioned roller bearing, elastic stoppers are provided at both ends of the roller bearing, the intermediate portions of which abut against the roller bearing ends, and both ends of which are supported by support portions provided on the fuselage and the swash plate to enable rotation and longitudinal movement. A swash plate support device for a swash plate type variable displacement pump, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18131582U JPS5984281U (en) | 1982-11-29 | 1982-11-29 | Swash plate support device for swash plate type variable displacement pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18131582U JPS5984281U (en) | 1982-11-29 | 1982-11-29 | Swash plate support device for swash plate type variable displacement pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5984281U JPS5984281U (en) | 1984-06-07 |
JPS6320863Y2 true JPS6320863Y2 (en) | 1988-06-09 |
Family
ID=30392925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18131582U Granted JPS5984281U (en) | 1982-11-29 | 1982-11-29 | Swash plate support device for swash plate type variable displacement pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5984281U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0426701Y2 (en) * | 1984-08-28 | 1992-06-26 |
-
1982
- 1982-11-29 JP JP18131582U patent/JPS5984281U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5984281U (en) | 1984-06-07 |
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