WO2015111687A4 - Spring assembly for master cylinder - Google Patents

Spring assembly for master cylinder Download PDF

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Publication number
WO2015111687A4
WO2015111687A4 PCT/JP2015/051792 JP2015051792W WO2015111687A4 WO 2015111687 A4 WO2015111687 A4 WO 2015111687A4 JP 2015051792 W JP2015051792 W JP 2015051792W WO 2015111687 A4 WO2015111687 A4 WO 2015111687A4
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WO
WIPO (PCT)
Prior art keywords
retainer member
spring assembly
compression coil
coil spring
outward flange
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PCT/JP2015/051792
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French (fr)
Japanese (ja)
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WO2015111687A2 (en
WO2015111687A3 (en
Inventor
佑次 山岸
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株式会社アドヴィックス
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Publication of WO2015111687A2 publication Critical patent/WO2015111687A2/en
Publication of WO2015111687A3 publication Critical patent/WO2015111687A3/en
Publication of WO2015111687A4 publication Critical patent/WO2015111687A4/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/128—Attachments or mountings with motion-limiting means, e.g. with a full-length guide element or ball joint connections; with protective outer cover
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3221—Constructional features of piston rods

Definitions

  • the present invention relates to a spring assembly of a master cylinder assembled with a piston in a cylinder bore provided in a cylinder body.
  • a spring assembly of this type is described, for example, in Japanese Patent No. 4563343.
  • a tubular assembly having an inward engaging portion at one end and an outward flange at the other end is disclosed.
  • First retainer member and a small diameter portion having an outward engaging portion formed at one end, and an outward flange portion formed at the other end coaxially with the small diameter portion
  • a large diameter portion which is inserted into the first retainer member at the small diameter portion and prevented from coming off by the engagement of the inward engagement portion and the outward engagement portion;
  • a second retainer member coaxially connected to the retainer member, coaxially mounted on the outer periphery of the first retainer member and the second retainer member, and facing outward of the first retainer member at one end Engage with the flange and at the other end
  • a compression coil spring that engages the outward flange portion of the second retainers member.
  • Such a spring assembly can accommodate and arrange a part thereof (for example, the first retainer member side end portion) in a bore provided in the piston, and can reduce the overall length of the master cylinder. is there.
  • a spring assembly can be incorporated in advance in the bore of the piston, and can be assembled together with the piston in the bore in the cylinder provided in the cylinder body, so that the assemblability is good. It is possible to
  • the inward engagement portion of the first retainer member is formed in the small diameter cylindrical portion, and the outward flange portion of the first retainer member is formed in the large diameter cylindrical portion. It is formed, and a small diameter cylinder part is formed in the taper shape which diameter-expands toward a large diameter cylinder part. For this reason, when the compression coil spring is contracted in the axial direction, the clearance between the small diameter cylindrical portion of the first retainer member and the outward engagement portion of the second retainer member becomes large, thereby causing the compression coil spring to buckle (axial load (Radial deformation) can not be sufficiently suppressed. In the master cylinder designed to reduce the overall length, the compression coil spring may interfere with the inner wall of the inner hole of the piston to generate noise due to the back ring of the compression coil spring.
  • the present invention has been made to address the above-mentioned problems, and it is an object of the present invention to provide a spring assembly of a master cylinder capable of sufficiently suppressing the buckling of a compression coil spring.
  • the inward engagement portion of the first retainer member is set to be in sliding contact with the outer peripheral surface of the small diameter portion of the second retainer member, and the outward engagement portion of the second retainer member is a cylinder of the first retainer member. It is characterized in that it is set so as to be in sliding contact with the inner circumferential surface.
  • the inward engagement portion of the first retainer member is in sliding contact with the outer peripheral surface of the small diameter portion of the second retainer member, and the outward engagement of the second retainer member
  • the first retainer member moves in the axial direction relative to the second retainer member in a state where the mating portion is in sliding contact with the cylindrical inner peripheral surface of the first retainer member. For this reason, the coaxiality of the 1st retainer member and the 2nd retainer member is maintained satisfactorily. Therefore, it is possible to sufficiently suppress the buckling of the compression coil spring.
  • the first retainer member is provided with a holding portion for holding one end of the compression coil spring in a state in which movement in the radial direction is restricted, and the other end of the compression coil spring is formed on the second retainer member.
  • a holding portion that restricts the movement of the compression coil in the radial direction
  • relative movement of the compression coil spring relative to the first and second retainer members can be properly suppressed. It is possible. For this reason, in this case, it is possible to enhance the function of suppressing the buckling of the compression coil spring by the first and second retainer members.
  • the holding portion of the first retainer member is formed on the outward flange portion of the first retainer member, and the holding portion of the second retainer member is formed on the large diameter portion or the outward flange portion of the second retainer member. It is also possible.
  • FIG. 1 is a cross-sectional view of an essential part showing an embodiment of a master cylinder including a spring assembly according to the present invention. It is a cross section of a single spring assembly shown in FIG.
  • FIG. 7 is a cross-sectional view showing a first modified embodiment of a spring assembly according to the present invention.
  • FIG. 7 is a cross-sectional view showing a second modified embodiment of the spring assembly according to the present invention.
  • FIG. 1 shows a part (one embodiment) of a master cylinder MC including a spring assembly 20 according to the present invention.
  • a spring together with a piston 12 in a cylinder bore 11a provided in a cylinder body 11 is shown.
  • the assembly 20 is assembled. Further, the spring assembly 20 is incorporated in advance in the bore 12 a of the piston 12, and a part (right side portion in the drawing) is accommodated in the bore 12 a of the piston 12. Thereby, the entire length of the master cylinder MC is shortened.
  • the spring assembly 20 as shown in FIGS. 1 and 2, includes a cylindrical first retainer member 21 made of resin, a solid second retainer member 22 made of resin, and a cylindrical compression made of metal.
  • a coil spring 23 is provided.
  • the second retainer member 22 is coaxially connected to the first retainer member 21.
  • the compression coil spring 23 is coaxially mounted on the outer periphery of the first retainer member 21 and the second retainer member 22.
  • the first retainer member 21 has a small diameter cylindrical portion 21a and a large diameter cylindrical portion 21b.
  • a plurality of inward engaging portions 21a1 and a plurality of inward engaging portions 21a1 are provided at the left end (one end) of the small diameter cylindrical portion 21a.
  • Each slit 21a2 is formed, and an outward flange portion 21b1 and a holding portion 21b2 are formed at the illustrated right end portion (the other end portion) of the large diameter cylindrical portion 21b.
  • the small diameter cylindrical portion 21a, the large diameter cylindrical portion 21b, the outward flange portion 21b1, the holding portion 21b2, and the like are formed coaxially.
  • Each inward engagement portion 21a1 is formed in an arc shape.
  • Each slit 21a2 is for enabling the diameter of the left end portion of the small diameter cylindrical portion 21a to be increased in diameter, and extends in the axial direction.
  • the outward flange portion 21b1 is formed in an annular shape, and is engaged with the illustrated right end of the compression coil spring 23.
  • the holding portion 21b2 is for holding the illustrated right end portion (one end portion) of the compression coil spring 23 in a state in which movement in the radial direction is restricted, and is formed annularly on the outer periphery of the large diameter cylindrical portion 21b. There is.
  • the second retainer member 22 has a small diameter portion 22a and a large diameter portion 22b, and an outward engaging portion 22a1 is formed at the illustrated right end portion (one end portion) of the small diameter portion 21a, and the large diameter portion 21b An outward flange portion 22b1 and a holding portion 22b2 are formed at the left end portion (the other end portion) of the drawing.
  • the small diameter cylindrical portion 22a, the large diameter cylindrical portion 22b, the outward flange portion 22b1, the holding portion 22b2, and the like are formed coaxially.
  • the outward engagement portion 22a1 is formed in an annular shape, and the second retainer member 22 is prevented from coming off the first retainer member 21 by engaging with the inward engagement portion 21a1.
  • the outward flange portion 22b1 is formed in an annular shape, and is engaged with the illustrated left end of the compression coil spring 23.
  • the holding portion 22b2 is for holding the illustrated left end portion (the other end portion) of the compression coil spring 23 in a state in which movement in the radial direction is restricted, and is formed annularly on the outer periphery of the large diameter portion 22b. There is.
  • the inward engaging portion 21a1 of the first retainer member 21 is set to be in sliding contact with the small diameter portion outer peripheral surface S2 of the second retainer member 22, and the outward engaging of the second retainer member 22
  • the portion 22a1 is set to be in sliding contact with the cylindrical inner circumferential surface S1 of the first retainer member 21.
  • the first retainer member 21 is provided with a holding portion 21b2 for holding the illustrated right end portion of the compression coil spring 23 in the state of restricting the movement in the radial direction, and the second retainer member 22 is compressed.
  • a holding portion 22b2 is formed which holds the illustrated left end portion of the coil spring 23 in a state in which movement in the radial direction is restricted.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention, for example, the first modification illustrated in FIG. 3 or the second modification illustrated in FIG. Embodiments can be employed.
  • a shape in which the large diameter cylindrical portion 21 b is eliminated is adopted as the first retainer member 21, and an outward flange portion is provided at the illustrated right end (other end) of the small diameter cylindrical portion 21 a. 21b1 and a holding portion 21b2 are formed. Further, in this modified embodiment, the holding portion 21b2 holds the right end portion (one end portion) of the compression coil spring 23 on the inner peripheral portion of the outward flange portion 21b1 while restricting the movement from the inner periphery to the radial direction. Is formed.
  • the first retainer member 21 adopts a shape in which the large diameter cylindrical portion 21 b is eliminated, and the outward rightward end (other end) of the small diameter cylindrical portion 21 a is illustrated.
  • the flange portion 21b1 and the holding portion 21b2 are formed.
  • a holding portion 21b2 is formed on the outer peripheral portion of the outward flange portion 21b1 to hold the illustrated right end portion (one end portion) of the compression coil spring 23 in a state of restricting radial movement from the outer periphery. It is done.
  • the holding portion 22b2 of the second retainer member 22 may be formed on the outer peripheral portion of the outward flange portion 22b1 similarly to the second modified embodiment of FIG. 4 described above. It is possible.

Abstract

　This spring assembly (20) is provided with: a first retainer member (21) and a second retainer member (22) that are coaxially coupled; and a cylindrical compression coil spring (23) coaxially mounted to the outer periphery of the first retainer member (21) and the second retainer member (22). The spring assembly (20) is arranged, together with a piston (12), inside a cylinder inner hole (11a) provided in a cylinder body (11) of a master cylinder (MC). An inwardly oriented engaging part (21a1) of the first retainer member (21) is configured so as to be in sliding contact with a small diameter portion outer peripheral surface (S2) of the second retainer member (22). An outwardly oriented engaging part (22a1) of the second retainer member (22) is configured so as to be in sliding contact with a cylindrical inner peripheral surface (S1) of the first retainer member (21). Thus, buckling of the compression coil spring can be sufficiently suppressed in the spring assembly.

Description

マスタシリンダのスプリング組立体Master cylinder spring assembly
　本発明は、シリンダ本体に設けたシリンダ内孔内にピストンとともに組付けられるマスタシリンダのスプリング組立体に関する。 The present invention relates to a spring assembly of a master cylinder assembled with a piston in a cylinder bore provided in a cylinder body.
　この種のスプリング組立体は、例えば、特許第４５６３３４３号に記載されていて、一端部に内向き係合部が形成されているとともに、他端部に外向きフランジ部が形成されている筒状の第１リテーナ部材と、一端部に外向き係合部が形成されている小径部を有するとともに、他端部に外向きフランジ部が形成されていて前記小径部に対して同軸的に形成されている大径部を有していて、前記小径部にて前記第１リテーナ部材内に挿入され、前記内向き係合部と前記外向き係合部の係合により抜け止めされ、前記第１リテーナ部材に対して同軸的に連結される第２リテーナ部材と、前記第１リテーナ部材と前記第２リテーナ部材の外周に同軸的に装着されていて、一端にて前記第１リテーナ部材の外向きフランジ部に係合し、他端にて前記第２リテーナ部材の外向きフランジ部に係合する圧縮コイルスプリングとを備えている。 A spring assembly of this type is described, for example, in Japanese Patent No. 4563343. A tubular assembly having an inward engaging portion at one end and an outward flange at the other end is disclosed. First retainer member and a small diameter portion having an outward engaging portion formed at one end, and an outward flange portion formed at the other end coaxially with the small diameter portion A large diameter portion which is inserted into the first retainer member at the small diameter portion and prevented from coming off by the engagement of the inward engagement portion and the outward engagement portion; A second retainer member coaxially connected to the retainer member, coaxially mounted on the outer periphery of the first retainer member and the second retainer member, and facing outward of the first retainer member at one end Engage with the flange and at the other end And a compression coil spring that engages the outward flange portion of the second retainers member.
　かかるスプリング組立体は、その一部（例えば、第１リテーナ部材側端部）をピストンに設けた内孔内に収容配置することが可能であり、当該マスタシリンダの全長を短縮することが可能である。また、かかるスプリング組立体は、ピストンの内孔内に予め組み込んでおくことが可能であって、シリンダ本体に設けたシリンダ内孔内にピストンとともに組付けることが可能であり、組付性を良好とすることが可能である。 Such a spring assembly can accommodate and arrange a part thereof (for example, the first retainer member side end portion) in a bore provided in the piston, and can reduce the overall length of the master cylinder. is there. In addition, such a spring assembly can be incorporated in advance in the bore of the piston, and can be assembled together with the piston in the bore in the cylinder provided in the cylinder body, so that the assemblability is good. It is possible to
　ところで、特許第４５６３３４３号に記載されているスプリング組立体においては、第１リテーナ部材の内向き係合部が小径筒部に形成され、第１リテーナ部材の外向きフランジ部が大径筒部に形成されていて、小径筒部が大径筒部に向けて拡径するテーパー形状に形成されている。このため、圧縮コイルスプリングが軸方向に縮むときには、第１リテーナ部材の小径筒部と第２リテーナ部材の外向き係合部間のクリアランスが大きくなって、圧縮コイルスプリングのバックリング（軸方向荷重に対する径方向の変形）を十分に抑制することができなくなるおそれがある。なお、全長短縮を図ったマスタシリンダにおいては、圧縮コイルスプリングのバックリングによって、圧縮コイルスプリングがピストンの内孔内壁に干渉して異音を発生させるおそれがある。 By the way, in the spring assembly described in Japanese Patent No. 4563343, the inward engagement portion of the first retainer member is formed in the small diameter cylindrical portion, and the outward flange portion of the first retainer member is formed in the large diameter cylindrical portion. It is formed, and a small diameter cylinder part is formed in the taper shape which diameter-expands toward a large diameter cylinder part. For this reason, when the compression coil spring is contracted in the axial direction, the clearance between the small diameter cylindrical portion of the first retainer member and the outward engagement portion of the second retainer member becomes large, thereby causing the compression coil spring to buckle (axial load (Radial deformation) can not be sufficiently suppressed. In the master cylinder designed to reduce the overall length, the compression coil spring may interfere with the inner wall of the inner hole of the piston to generate noise due to the back ring of the compression coil spring.
　本発明は、上記した課題に対処すべくなされたものであり、圧縮コイルスプリングのバックリングを十分に抑制し得るマスタシリンダのスプリング組立体を提供することにあり、上記したスプリング組立体において、前記第１リテーナ部材の前記内向き係合部が前記第２リテーナ部材の小径部外周面に摺接するように設定され、前記第２リテーナ部材の前記外向き係合部が前記第１リテーナ部材の筒状内周面に摺接するように設定されていることに特徴がある。 The present invention has been made to address the above-mentioned problems, and it is an object of the present invention to provide a spring assembly of a master cylinder capable of sufficiently suppressing the buckling of a compression coil spring. The inward engagement portion of the first retainer member is set to be in sliding contact with the outer peripheral surface of the small diameter portion of the second retainer member, and the outward engagement portion of the second retainer member is a cylinder of the first retainer member. It is characterized in that it is set so as to be in sliding contact with the inner circumferential surface.
　本発明によるスプリング組立体では、圧縮コイルスプリングが軸方向に縮むとき、第１リテーナ部材の内向き係合部が第２リテーナ部材の小径部外周面に摺接し、第２リテーナ部材の外向き係合部が第１リテーナ部材の筒状内周面に摺接した状態にて、第１リテーナ部材が第２リテーナ部材に対して相対的に軸方向に移動する。このため、第１リテーナ部材と第２リテーナ部材の同軸度が良好に維持される。したがって、圧縮コイルスプリングのバックリングを十分に抑制することが可能である。 In the spring assembly according to the present invention, when the compression coil spring is contracted in the axial direction, the inward engagement portion of the first retainer member is in sliding contact with the outer peripheral surface of the small diameter portion of the second retainer member, and the outward engagement of the second retainer member The first retainer member moves in the axial direction relative to the second retainer member in a state where the mating portion is in sliding contact with the cylindrical inner peripheral surface of the first retainer member. For this reason, the coaxiality of the 1st retainer member and the 2nd retainer member is maintained satisfactorily. Therefore, it is possible to sufficiently suppress the buckling of the compression coil spring.
　上記した本発明の実施に際して、第１リテーナ部材に圧縮コイルスプリングの一端部を径方向への移動を規制した状態で保持する保持部が形成され、第２リテーナ部材に圧縮コイルスプリングの他端部を径方向への移動を規制した状態で保持する保持部が形成されている場合には、第１リテーナ部材および第２リテーナ部材に対する圧縮コイルスプリングの径方向への相対的な移動を的確に抑制することが可能である。このため、この場合には、第１リテーナ部材および第２リテーナ部材による圧縮コイルスプリングのバックリング抑制機能を高めることが可能である。この場合において、第１リテーナ部材の保持部が第１リテーナ部材の外向きフランジ部に形成され、第２リテーナ部材の保持部が第２リテーナ部材の大径部または外向きフランジ部に形成されていることも可能である。 In the embodiment of the present invention described above, the first retainer member is provided with a holding portion for holding one end of the compression coil spring in a state in which movement in the radial direction is restricted, and the other end of the compression coil spring is formed on the second retainer member. In the case where there is formed a holding portion that restricts the movement of the compression coil in the radial direction, relative movement of the compression coil spring relative to the first and second retainer members can be properly suppressed. It is possible. For this reason, in this case, it is possible to enhance the function of suppressing the buckling of the compression coil spring by the first and second retainer members. In this case, the holding portion of the first retainer member is formed on the outward flange portion of the first retainer member, and the holding portion of the second retainer member is formed on the large diameter portion or the outward flange portion of the second retainer member. It is also possible.
本発明に係るスプリング組立体を含むマスタシリンダの一実施形態を示した要部断面図である。1 is a cross-sectional view of an essential part showing an embodiment of a master cylinder including a spring assembly according to the present invention. 図１に示したスプリング組立体単体の断面部である。It is a cross section of a single spring assembly shown in FIG. 本発明に係るスプリング組立体の第１変形実施形態を示した断面図である。FIG. 7 is a cross-sectional view showing a first modified embodiment of a spring assembly according to the present invention. 本発明に係るスプリング組立体に第２変形実施形態を示した断面図である。FIG. 7 is a cross-sectional view showing a second modified embodiment of the spring assembly according to the present invention.
　以下に、本発明の実施形態を図面に基づいて説明する。図１は本発明によるスプリング組立体２０を含むマスタシリンダＭＣの一部（一実施形態）を示していて、このマスタシリンダＭＣでは、シリンダ本体１１に設けたシリンダ内孔１１ａ内にピストン１２とともにスプリング組立体２０が組付けられている。また、スプリング組立体２０は、ピストン１２の内孔１２ａ内に予め組み込まれていて、その一部（図示右方部分）がピストン１２の内孔１２ａ内に収容配置されている。これにより、当該マスタシリンダＭＣの全長が短縮されている。 Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 shows a part (one embodiment) of a master cylinder MC including a spring assembly 20 according to the present invention. In this master cylinder MC, a spring together with a piston 12 in a cylinder bore 11a provided in a cylinder body 11 is shown. The assembly 20 is assembled. Further, the spring assembly 20 is incorporated in advance in the bore 12 a of the piston 12, and a part (right side portion in the drawing) is accommodated in the bore 12 a of the piston 12. Thereby, the entire length of the master cylinder MC is shortened.
　スプリング組立体２０は、図１および図２に示したように、樹脂製で筒状の第１リテーナ部材２１と、樹脂製で中実の第２リテーナ部材２２と、金属製で円筒状の圧縮コイルスプリング２３とを備えている。第２リテーナ部材２２は、第１リテーナ部材２１に対して同軸的に連結されている。圧縮コイルスプリング２３は、第１リテーナ部材２１と第２リテーナ部材２２の外周に同軸的に装着されている。 The spring assembly 20, as shown in FIGS. 1 and 2, includes a cylindrical first retainer member 21 made of resin, a solid second retainer member 22 made of resin, and a cylindrical compression made of metal. A coil spring 23 is provided. The second retainer member 22 is coaxially connected to the first retainer member 21. The compression coil spring 23 is coaxially mounted on the outer periphery of the first retainer member 21 and the second retainer member 22.
　第１リテーナ部材２１は、小径筒部２１ａを有するとともに大径筒部２１ｂを有していて、小径筒部２１ａの図示左端部（一端部）には複数個の内向き係合部２１ａ１と複数個のスリット２１ａ２が形成され、大径筒部２１ｂの図示右端部（他端部）には外向きフランジ部２１ｂ１と保持部２１ｂ２が形成されている。なお、第１リテーナ部材２１において、小径筒部２１ａ、大径筒部２１ｂ、外向きフランジ部２１ｂ１、保持部２１ｂ２等は同軸的に形成されている。 The first retainer member 21 has a small diameter cylindrical portion 21a and a large diameter cylindrical portion 21b. A plurality of inward engaging portions 21a1 and a plurality of inward engaging portions 21a1 are provided at the left end (one end) of the small diameter cylindrical portion 21a. Each slit 21a2 is formed, and an outward flange portion 21b1 and a holding portion 21b2 are formed at the illustrated right end portion (the other end portion) of the large diameter cylindrical portion 21b. In the first retainer member 21, the small diameter cylindrical portion 21a, the large diameter cylindrical portion 21b, the outward flange portion 21b1, the holding portion 21b2, and the like are formed coaxially.
　各内向き係合部２１ａ１は、円弧状に形成されている。各スリット２１ａ２は、小径筒部２１ａの図示左端部を拡径可能とするためのものであり、軸方向に延設されている。外向きフランジ部２１ｂ１は、環状に形成されていて、圧縮コイルスプリング２３の図示右端と係合している。保持部２１ｂ２は、圧縮コイルスプリング２３の図示右端部（一端部）を径方向への移動を規制した状態で保持するためのものであり、大径筒部２１ｂの外周にて環状に形成されている。 Each inward engagement portion 21a1 is formed in an arc shape. Each slit 21a2 is for enabling the diameter of the left end portion of the small diameter cylindrical portion 21a to be increased in diameter, and extends in the axial direction. The outward flange portion 21b1 is formed in an annular shape, and is engaged with the illustrated right end of the compression coil spring 23. The holding portion 21b2 is for holding the illustrated right end portion (one end portion) of the compression coil spring 23 in a state in which movement in the radial direction is restricted, and is formed annularly on the outer periphery of the large diameter cylindrical portion 21b. There is.
　第２リテーナ部材２２は、小径部２２ａを有するとともに大径部２２ｂを有していて、小径部２１ａの図示右端部（一端部）には外向き係合部２２ａ１が形成され、大径部２１ｂの図示左端部（他端部）には外向きフランジ部２２ｂ１と保持部２２ｂ２が形成されている。なお、第２リテーナ部材２２において、小径筒部２２ａ、大径筒部２２ｂ、外向きフランジ部２２ｂ１、保持部２２ｂ２等は同軸的に形成されている。 The second retainer member 22 has a small diameter portion 22a and a large diameter portion 22b, and an outward engaging portion 22a1 is formed at the illustrated right end portion (one end portion) of the small diameter portion 21a, and the large diameter portion 21b An outward flange portion 22b1 and a holding portion 22b2 are formed at the left end portion (the other end portion) of the drawing. In the second retainer member 22, the small diameter cylindrical portion 22a, the large diameter cylindrical portion 22b, the outward flange portion 22b1, the holding portion 22b2, and the like are formed coaxially.
　外向き係合部２２ａ１は、環状に形成されていて、内向き係合部２１ａ１と係合することで、第２リテーナ部材２２が第１リテーナ部材２１から抜け止めされている。外向きフランジ部２２ｂ１は、環状に形成されていて、圧縮コイルスプリング２３の図示左端と係合している。保持部２２ｂ２は、圧縮コイルスプリング２３の図示左端部（他端部）を径方向への移動を規制した状態で保持するためのものであり、大径部２２ｂの外周にて環状に形成されている。 The outward engagement portion 22a1 is formed in an annular shape, and the second retainer member 22 is prevented from coming off the first retainer member 21 by engaging with the inward engagement portion 21a1. The outward flange portion 22b1 is formed in an annular shape, and is engaged with the illustrated left end of the compression coil spring 23. The holding portion 22b2 is for holding the illustrated left end portion (the other end portion) of the compression coil spring 23 in a state in which movement in the radial direction is restricted, and is formed annularly on the outer periphery of the large diameter portion 22b. There is.
　ところで、この実施形態においては、第１リテーナ部材２１の内向き係合部２１ａ１が第２リテーナ部材２２の小径部外周面Ｓ２に摺接するように設定され、第２リテーナ部材２２の外向き係合部２２ａ１が第１リテーナ部材２１の筒状内周面Ｓ１に摺接するように設定されている。 By the way, in this embodiment, the inward engaging portion 21a1 of the first retainer member 21 is set to be in sliding contact with the small diameter portion outer peripheral surface S2 of the second retainer member 22, and the outward engaging of the second retainer member 22 The portion 22a1 is set to be in sliding contact with the cylindrical inner circumferential surface S1 of the first retainer member 21.
　上記した実施形態のスプリング組立体２０では、圧縮コイルスプリング２３が軸方向に縮むとき、第１リテーナ部材２１の内向き係合部２１ａ１が第２リテーナ部材２２の小径部外周面Ｓ２に摺接し、第２リテーナ部材２２の外向き係合部２２ａ１が第１リテーナ部材２１の筒状内周面Ｓ１に摺接した状態にて、第１リテーナ部材２１が第２リテーナ部材２２に対して相対的に軸方向に移動する。このため、第１リテーナ部材２１と第２リテーナ部材２２の同軸度が良好に維持される。したがって、圧縮コイルスプリング２３のバックリングを十分に抑制することが可能である。 In the spring assembly 20 of the embodiment described above, when the compression coil spring 23 is contracted in the axial direction, the inward engagement portion 21a1 of the first retainer member 21 is in sliding contact with the small diameter portion outer peripheral surface S2 of the second retainer member 22; In a state where the outward engaging portion 22a1 of the second retainer member 22 is in sliding contact with the cylindrical inner circumferential surface S1 of the first retainer member 21, the first retainer member 21 is relatively relative to the second retainer member 22. Move in the axial direction. For this reason, the coaxiality of the 1st retainer member 21 and the 2nd retainer member 22 is maintained favorably. Therefore, it is possible to sufficiently suppress the buckling of the compression coil spring 23.
　また、このスプリング組立体２０では、第１リテーナ部材２１に圧縮コイルスプリング２３の図示右端部を径方向への移動を規制した状態で保持する保持部２１ｂ２が形成され、第２リテーナ部材２２に圧縮コイルスプリング２３の図示左端部を径方向への移動を規制した状態で保持する保持部２２ｂ２が形成されている。これにより、第１リテーナ部材２１および第２リテーナ部材２２に対する圧縮コイルスプリング２３の径方向への相対的な移動を的確に抑制することが可能である。このため、第１リテーナ部材２１および第２リテーナ部材２２による圧縮コイルスプリング２３のバックリング抑制機能を高めることが可能である。 Further, in the spring assembly 20, the first retainer member 21 is provided with a holding portion 21b2 for holding the illustrated right end portion of the compression coil spring 23 in the state of restricting the movement in the radial direction, and the second retainer member 22 is compressed. A holding portion 22b2 is formed which holds the illustrated left end portion of the coil spring 23 in a state in which movement in the radial direction is restricted. Thereby, it is possible to appropriately suppress relative movement of the compression coil spring 23 in the radial direction with respect to the first retainer member 21 and the second retainer member 22. Therefore, the function of suppressing the buckling of the compression coil spring 23 by the first retainer member 21 and the second retainer member 22 can be enhanced.
　本発明は上記実施形態に限定されることはなく、本発明の特許請求の範囲内において種々の変形実施形態、例えば、図３に例示した第１変形実施形態または図４に例示した第２変形実施形態を採用することができる。 The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention, for example, the first modification illustrated in FIG. 3 or the second modification illustrated in FIG. Embodiments can be employed.
　図３に例示した第１変形実施形態では、第１リテーナ部材２１として大径筒部２１ｂを無くした形状が採用され、小径筒部２１ａの図示右端部（他端部）に、外向きフランジ部２１ｂ１と保持部２１ｂ２が形成されている。また、この変形実施形態では、外向きフランジ部２１ｂ１の内周部に、圧縮コイルスプリング２３の図示右端部（一端部）を内周から径方向への移動を規制した状態で保持する保持部２１ｂ２が形成されている。 In the first modified embodiment illustrated in FIG. 3, a shape in which the large diameter cylindrical portion 21 b is eliminated is adopted as the first retainer member 21, and an outward flange portion is provided at the illustrated right end (other end) of the small diameter cylindrical portion 21 a. 21b1 and a holding portion 21b2 are formed. Further, in this modified embodiment, the holding portion 21b2 holds the right end portion (one end portion) of the compression coil spring 23 on the inner peripheral portion of the outward flange portion 21b1 while restricting the movement from the inner periphery to the radial direction. Is formed.
　一方、図４に例示した第２変形実施形態では、第１リテーナ部材２１として大径筒部２１ｂを無くした形状が採用され、小径筒部２１ａの図示右端部（他端部）に、外向きフランジ部２１ｂ１と保持部２１ｂ２が形成されている。また、この変形実施形態では、外向きフランジ部２１ｂ１の外周部に、圧縮コイルスプリング２３の図示右端部（一端部）を外周から径方向への移動を規制した状態で保持する保持部２１ｂ２が形成されている。 On the other hand, in the second modified embodiment illustrated in FIG. 4, the first retainer member 21 adopts a shape in which the large diameter cylindrical portion 21 b is eliminated, and the outward rightward end (other end) of the small diameter cylindrical portion 21 a is illustrated. The flange portion 21b1 and the holding portion 21b2 are formed. Further, in this modified embodiment, a holding portion 21b2 is formed on the outer peripheral portion of the outward flange portion 21b1 to hold the illustrated right end portion (one end portion) of the compression coil spring 23 in a state of restricting radial movement from the outer periphery. It is done.
　なお、本発明の実施に際しては、第２リテーナ部材２２の保持部２２ｂ２を、上記した図４の第２変形実施形態と同様に、外向きフランジ部２２ｂ１の外周部に形成して実施することも可能である。 In the implementation of the present invention, the holding portion 22b2 of the second retainer member 22 may be formed on the outer peripheral portion of the outward flange portion 22b1 similarly to the second modified embodiment of FIG. 4 described above. It is possible.

Claims (3)

  1. 　一端部に内向き係合部が形成されているとともに、他端部に外向きフランジ部が形成されている筒状の第１リテーナ部材と、
    　一端部に外向き係合部が形成されている小径部を有するとともに、他端部に外向きフランジ部が形成されていて前記小径部に対して同軸的に形成されている大径部を有していて、前記小径部にて前記第１リテーナ部材内に挿入され、前記内向き係合部と前記外向き係合部の係合により抜け止めされ、前記第１リテーナ部材に対して同軸的に連結される第２リテーナ部材と、
    　前記第１リテーナ部材と前記第２リテーナ部材の外周に同軸的に装着されていて、一端にて前記第１リテーナ部材の外向きフランジ部に係合し、他端にて前記第２リテーナ部材の外向きフランジ部に係合する圧縮コイルスプリングと、
    を備えていて、シリンダ本体に設けたシリンダ内孔内にピストンとともに組付けられるマスタシリンダのスプリング組立体であって、
    　前記第１リテーナ部材の前記内向き係合部が前記第２リテーナ部材の小径部外周面に摺接するように設定され、
    　前記第２リテーナ部材の前記外向き係合部が前記第１リテーナ部材の筒状内周面に摺接するように設定されている、
    マスタシリンダのスプリング組立体。     A tubular first retainer member having an inward engagement portion formed at one end and an outward flange formed at the other end;
    While having a small diameter portion in which an outward engaging portion is formed at one end, an outward flange portion is formed at the other end, and a large diameter portion coaxially formed with respect to the small diameter portion is provided. Are inserted into the first retainer member at the small diameter portion, and are prevented from coming off by the engagement of the inward engagement portion and the outward engagement portion, and are coaxial with the first retainer member A second retainer member coupled to the
    The first and second retainer members are coaxially mounted on the outer periphery of the first and second retainer members and engage with the outward flange portion of the first retainer member at one end, and at the other end of the second retainer member. A compression coil spring engaged with the outward flange portion;
    A spring assembly of a master cylinder that is assembled with a piston in a cylinder bore provided in a cylinder body,
    The inward engagement portion of the first retainer member is set in sliding contact with the outer peripheral surface of the small diameter portion of the second retainer member,
    The outward engagement portion of the second retainer member is set in sliding contact with the cylindrical inner circumferential surface of the first retainer member.
    Master cylinder spring assembly.
  2. 　前記第１リテーナ部材に前記圧縮コイルスプリングの一端部を径方向への移動を規制した状態で保持する保持部が形成され、前記第２リテーナ部材に前記圧縮コイルスプリングの他端部を径方向への移動を規制した状態で保持する保持部が形成されている、請求項１に記載のマスタシリンダのスプリング組立体。 A holding portion is formed on the first retainer member to hold one end of the compression coil spring in a state in which movement in the radial direction is restricted, and the other end of the compression coil spring is radially formed on the second retainer member. The spring assembly of a master cylinder according to claim 1, further comprising: a holding portion configured to hold the movement of the frame in a restricted state.
  3. 　前記第１リテーナ部材の前記保持部が前記第１リテーナ部材の前記外向きフランジ部に形成され、前記第２リテーナ部材の前記保持部が前記第２リテーナ部材の前記大径部または前記外向きフランジ部に形成されている、請求項２に記載のマスタシリンダのスプリング組立体。 The holding portion of the first retainer member is formed on the outward flange portion of the first retainer member, and the holding portion of the second retainer member is the large diameter portion or the outward flange of the second retainer member. The spring assembly of a master cylinder according to claim 2, formed in a part.
PCT/JP2015/051792 2014-01-24 2015-01-23 Spring assembly for master cylinder WO2015111687A2 (en)

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