WO2021100662A1 - Spring assembly - Google Patents

Spring assembly Download PDF

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Publication number
WO2021100662A1
WO2021100662A1 PCT/JP2020/042638 JP2020042638W WO2021100662A1 WO 2021100662 A1 WO2021100662 A1 WO 2021100662A1 JP 2020042638 W JP2020042638 W JP 2020042638W WO 2021100662 A1 WO2021100662 A1 WO 2021100662A1
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WO
WIPO (PCT)
Prior art keywords
spring assembly
piston
base plate
spring
contact portion
Prior art date
Application number
PCT/JP2020/042638
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French (fr)
Japanese (ja)
Inventor
泰崇 植松
信吾 酒井
Original Assignee
株式会社パイオラックス
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Application filed by 株式会社パイオラックス filed Critical 株式会社パイオラックス
Priority to JP2021558373A priority Critical patent/JP7288972B2/en
Publication of WO2021100662A1 publication Critical patent/WO2021100662A1/en

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    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
    • F16D13/71—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members in which the clutching pressure is produced by springs only
    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs

Definitions

  • the present invention relates to a spring assembly that holds a plurality of springs.
  • Patent Document 1 discloses a piston mechanism of an automatic transmission having a plurality of return springs and spring retainers.
  • the spring retainer has an annular disk portion, a holding portion for holding the return spring, and a passing hole through which the pressing portion of the piston is inserted. The passage hole penetrates the disk portion.
  • the spring retainer disclosed in Patent Document 1 reduces the rigidity of the disk portion by forming a passage hole for inserting the pressing portion of the piston. If the passage hole for inserting the pressing portion of the piston is not formed, the piston and the spring retainer may be significantly displaced.
  • An object of the present invention is to provide a technique for ensuring the rigidity of the base plate of the spring assembly while suppressing the displacement between the spring assembly and the piston.
  • one aspect of the present invention is a spring assembly in which a piston and a contacted member extending from the piston are in contact with each other, and the piston is formed. It is provided with a plurality of springs for urging the members in a direction away from the contacted member, and a base plate formed in an annular shape and supporting the plurality of springs arranged in the circumferential direction.
  • the base plate has a plurality of through holes for inserting the contact portion to abut the contacted member when the spring contracts, and the contact portion is inserted and formed at the edge of each of the plurality of through holes.
  • It has a plurality of tubular portions and a plurality of tubular portions. The tubular portion extends along the advancing / retreating direction of the piston.
  • FIG. 2A is a side view of the spring assembly
  • FIG. 2B is a bottom view of the spring assembly.
  • It is a perspective view of the spring assembly in a reference state at the time of mounting.
  • It is a perspective view of the spring assembly in the contact state at the time of mounting.
  • It is a figure for demonstrating operation of a spring assembly in a mounted state.
  • It is a perspective view of the spring assembly of the 1st modification.
  • FIG. 6 is a cross-sectional view taken along the line segment AA of the spring assembly shown in FIG.
  • It is a perspective view of the spring assembly of the 2nd modification.
  • It is a perspective view of the spring assembly body of the 3rd modification.
  • FIG. 1 is a perspective view of the spring assembly 10 of the embodiment.
  • FIG. 1 (a) is a view seen from diagonally above
  • FIG. 1 (b) is a view seen from diagonally below.
  • 2 (a) is a side view of the spring assembly 10
  • FIG. 2 (b) is a bottom view of the spring assembly 10.
  • the spring assembly 10 includes a base plate 20, a support plate 22, and a spring 24.
  • the spring assembly 10 is provided in the clutch mechanism of the transmission of the vehicle, functions as an elastic body for returning the position of the piston, and is provided on the outer circumference or the inner circumference of the pipe member.
  • the spring assembly 10 is interposed between the piston and the contacted member to which the piston can come into contact.
  • the spring assembly 10 can be expanded and contracted in the axial direction of the spring 24. In the following description, the axial direction of the spring 24 is simply referred to as the axial direction.
  • the base plate 20 and the support plate 22 are each formed of a metal material in an annular shape.
  • the base plate 20 and the support plate 22 face each other in the axial direction and support both ends of the spring 24 so as to sandwich the spring 24.
  • the plurality of springs 24 are coil springs and are supported by the base plate 20 and the support plate 22. Both ends of the spring 24 are fixed to the base plate 20 and the support plate 22 by caulking.
  • the plurality of springs 24 are arranged in parallel, apart from each other in the circumferential direction.
  • the tubular portion 26 of the base plate 20 is formed so as to be erected along the axial direction by deep drawing.
  • the tubular portion 26 extends from the main body of the base plate 20 along the advancing / retreating direction of the piston.
  • a through hole 28 is formed inside the tubular portion 26.
  • the tubular portion 26 extends from the edge of the through hole 28 toward the support plate 22.
  • the tubular portion 26 and the through hole 28 are formed in a long hole shape in a bottom view, but are not limited to the long hole shape and may be formed in an elliptical shape or a perfect circle shape. ..
  • a plurality of tubular portions 26 and through holes 28 are formed apart from each other in the circumferential direction.
  • a plurality of caulking holes 33 for caulking the spring 24 are formed between the plurality of through holes 28.
  • the through hole 28 and the caulking hole 33 are provided at positions having the same diameter from the central axis of the spring assembly 10.
  • the axial height of the tubular portion 26 may be set in the range from twice the plate thickness of the base plate 20 to 3/4 of the distance between the base plate 20 and the support plate 22 in the free state.
  • the insertion hole 30 of the support plate 22 is formed in an elongated shape as shown in FIG. 2B, and is arranged coaxially with the through hole 28.
  • the contact portion of the piston is inserted into the through hole 28 and the insertion hole 30 from the support plate 22 side toward the base plate 20.
  • the insertion hole 30 is formed so as to be smaller than the through hole 28 of the base plate 20. As a result, the insertion hole 30 can regulate the movement of the base of the contact portion of the piston.
  • a circumferential step portion 32 is formed around the insertion hole 30.
  • the peripheral step portion 32 has an edge of the insertion hole 30 formed in a stepped shape, and projects toward the base plate 20.
  • the circumferential step portion 32 can ensure the rigidity of the support plate 22 around the insertion hole 30.
  • FIG. 3 is a perspective view of the spring assembly 10 in the reference state at the time of mounting.
  • FIG. 3 shows a piston 36 mounted on the spring assembly 10.
  • the piston 36 has a plurality of contact portions 34 and is formed in an annular shape.
  • the contact portion 34 extends from the main body of the piston 36, projects in a columnar shape, and is inserted into the through hole 28 and the insertion hole 30.
  • the contact portion 34 has an elongated cross section like the through hole 28 and the insertion hole 30.
  • the spring assembly 10 is attached to the clutch mechanism with an initial load applied.
  • the reference state of the spring assembly 10 refers to a mounted state in which only the initial load is applied, and refers to a state in which the spring 24 is most extended in a mounted state interposed between the piston 36 and the contacted member.
  • the piston 36 is coaxially mounted on the support plate 22, and the contact portion 34 is inserted from the insertion hole 30 into the cylinder portion 26 and the through hole 28. In this way, the contact portion 34 is inserted into the cylinder portion 26 in the reference state. The contact portion 34 does not protrude from the base plate 20.
  • FIG. 4 is a perspective view of the spring assembly 10 in the contact state at the time of mounting.
  • FIG. 4 shows a piston 36 mounted on the spring assembly 10.
  • the contact state means a state in which the contact portion 34 is in contact with a contacted member (not shown), and means a state in which the clutch mechanism is connected.
  • the clutch mechanism is not connected in the reference state of the spring assembly 10 shown in FIG.
  • the spring 24 contracts, the contact portion 34 penetrates the through hole 28, and protrudes below the base plate 20.
  • FIG. 5 is a diagram for explaining the operation of the spring assembly 10 in the mounted state.
  • FIG. 5A is a partial cross-sectional view of the spring assembly 10 in the reference state
  • FIG. 5B is a partial cross-sectional view of the spring assembly 10 in the contact state.
  • the spring assembly 10 is arranged inside the pipe member 42 and is placed on the pedestal portion 40.
  • the pedestal portion 40 is formed in an annular shape and projects from the inner peripheral surface of the pipe member 42 to restrict the downward movement of the spring assembly 10.
  • the spring assembly 10 is interposed between the contact portion 34 and the contacted member 38, and the spring 24 urges the contact portion 34 in a direction away from the contacted member 38.
  • the contact portion 34 In the spring assembly 10 in the reference state shown in FIG. 5A, the contact portion 34 is inserted into the tubular portion 26, but is separated from the contacted member 38. In the spring assembly 10 in the contact state shown in FIG. 5B, the contact portion 34 penetrates the through hole 28 and is in contact with the contacted member 38.
  • the tubular portion 26 functions as a guide when the abutting portion 34 advances toward the abutted member 38. By guiding the advancing and retreating of the contact portion 34 when the spring 24 expands and contracts, it is possible to prevent the spring 24 from being excessively tilted and to prevent the spring 24 from buckling.
  • the tip portion 34a of the contact portion 34 is located in the tubular portion 26 on the front side by the base plate 20 in the reference state of the spring assembly 10. That is, the contact portion 34 is set so as not to protrude from the base plate 20 in a state of being inserted into the tubular portion 26. As a result, since the contact portion 34 is always inserted into the cylinder portion 26, the guide of the cylinder portion 26 can be reliably received. Further, the tip portion 34a of the contact portion 34 can be arranged at a position close to the contacted member 38, and the stroke amount of the contact portion 34 can be set short. Therefore, the piston 36 and the contacted member 38 can be provided close to each other to shorten the axial length of the clutch mechanism and reduce the size. Since the abutting portion 34 is inserted into the insertion hole 30 of the support plate 22 and the tubular portion 26 of the base plate 20, respectively, the abutting portion 34 can receive radial guides at two locations.
  • the clearance between the insertion hole 30 and the outer peripheral surface of the contact portion 34 is the outer peripheral surface of the through hole 28 and the contact portion 34. It is set so that it is less than or equal to the clearance with. As a result, the radial movement of the contact portion 34 can be restricted on the root side of the contact portion 34, and the displacement between the support plate 22 and the piston 36 can be limited.
  • FIG. 6 is a perspective view of the spring assembly 100 of the first modification. Further, FIG. 7 is a cross-sectional view taken along line AA of the spring assembly 100 shown in FIG.
  • the spring assembly 100 of the first modification is different from the spring assembly 10 shown in FIG. 1A in that the support plate 122 has an interpolation tube portion 44.
  • the interpolation tube portion 44 of the support plate 122 is erected from the edge of the insertion hole 30 and has an elongated cross section.
  • the interpolation cylinder portion 44 is inserted into the cylinder portion 26.
  • FIG. 8 is a perspective view of the spring assembly 200 of the second modified example.
  • the spring assembly 200 is in contact with the spring assembly 200, and the spring 24 is contracted.
  • the spring assembly 200 of the second modification is different from the spring assembly 10 shown in FIG. 1A in that the base plate 220 and the support plate 222 have the same shape.
  • the base plate 220 has a first through hole 228a and a second through hole 228b (when these are not distinguished, it is referred to as a "through hole 228"), and a tubular portion 226 formed on the edge of the first through hole 228a. That is, the tubular portion 226 is formed in the first through hole 228a, and the tubular portion 226 is not formed in the second through hole 228b.
  • the support plate 222 has a first insertion hole 230a and a second insertion hole 230b (when these are not distinguished, it is referred to as "insertion hole 230"), and a tubular portion 46 formed on the edge of the first insertion hole 230a.
  • the tubular portion 46 is not formed in the second insertion hole 230b.
  • the tubular portion 226 of the base plate 220 faces the second insertion hole 230b of the support plate 222, and the tubular portion 46 of the support plate 222 faces the second through hole 228b of the base plate 220.
  • the cylinder portion 226 and the cylinder portion 46 can be prevented from interfering with each other, and each can guide the advance / retreat of the contact portion 34.
  • the manufacturing cost can be suppressed.
  • the spring assembly 10 when the spring assembly 10 is provided between the piston 36 and the contacted member 38, the spring assembly 10 can be easily attached because the attachment direction of the spring assembly 10 does not matter.
  • Holes 48 for erroneous assembly are formed in the base plate 220 and the support plate 222. For example, by providing the piston 36 with a protrusion that enters the hole 48, the rotation position of the piston 36 is determined, and the contact portion 34 is inserted into the second insertion hole 230b of the first insertion hole 230a and the second insertion hole 230b. Can be set to be.
  • FIG. 9 is a perspective view of the spring assembly 300 of the third modification.
  • the spring assembly 300 of the third modification is not provided with the support plate 22 as compared with the spring assembly 10 shown in FIG. 1 (a).
  • the tubular portion 26 can guide the advance / retreat of the contact portion 34.
  • the spring 24 is supported by the base plate 20 at only one end and directly urges the piston 36.
  • the present invention relates to a spring assembly that holds a plurality of springs.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

Disclosed is a spring assembly which is interposed between a piston and an abutment-receiving member on which an abutting part extending from the piston can be brought into abutment. The spring assembly is provided with: a plurality of springs that bias the piston in a direction away from the abutment-receiving member; and a base plate that is formed in an annular shape and supports the plurality of springs arranged side by side in the circumferential direction thereof. The base plate comprises: a plurality of through-holes each of which allows the abutting part to pass therethrough when the springs are compressed so as to cause the abutting part to come into abutment with the abutment-receiving member; and a plurality of cylindrical parts in which the abutting part is inserted and which are formed at the rim of the respective through-holes. The cylindrical parts are configured to extend along a reciprocating direction of the piston.

Description

ばね組立体Spring assembly
　本発明は、複数のバネを保持するばね組立体に関する。 The present invention relates to a spring assembly that holds a plurality of springs.
　特許文献１には、複数のリターンスプリングとスプリングリテーナを有する自動変速機のピストン機構が開示されています。このスプリングリテーナは、円環状の円盤部と、リターンスプリングを保持する保持部と、ピストンの押圧部を挿通する通過孔とを有する。通過孔は円盤部を貫通する。 Patent Document 1 discloses a piston mechanism of an automatic transmission having a plurality of return springs and spring retainers. The spring retainer has an annular disk portion, a holding portion for holding the return spring, and a passing hole through which the pressing portion of the piston is inserted. The passage hole penetrates the disk portion.
特開２０１９－６５９２８号公報JP-A-2019-65928
　特許文献１に開示されるスプリングリテーナは、ピストンの押圧部を挿入するための通過孔を形成することで、円盤部の剛性が低下する。ピストンの押圧部を挿入するための通過孔を形成しなければ、ピストンとスプリングリテーナが大きくずれる可能性がある。 The spring retainer disclosed in Patent Document 1 reduces the rigidity of the disk portion by forming a passage hole for inserting the pressing portion of the piston. If the passage hole for inserting the pressing portion of the piston is not formed, the piston and the spring retainer may be significantly displaced.
　本発明の目的は、ばね組立体とピストンとのずれを抑えつつ、ばね組立体のベース板の剛性を確保する技術を提供することにある。 An object of the present invention is to provide a technique for ensuring the rigidity of the base plate of the spring assembly while suppressing the displacement between the spring assembly and the piston.
　上記課題を解決するために、本発明のある態様は、ピストンと、ピストンから延設された当接部が当接可能な被当接部材との間に介在するばね組立体であって、ピストンを被当接部材から離れる方向に付勢する複数のばねと、環状に形成され、周方向に並んだ複数のばねを支持するベース板と、を備える。ベース板は、ばねが縮んだときに当接部を挿通させて被当接部材に当接させるための複数の貫通孔と、当接部が挿入され、複数の貫通孔の縁にそれぞれ形成される複数の筒部と、を有する。筒部は、ピストンの進退方向に沿って延設する。 In order to solve the above problems, one aspect of the present invention is a spring assembly in which a piston and a contacted member extending from the piston are in contact with each other, and the piston is formed. It is provided with a plurality of springs for urging the members in a direction away from the contacted member, and a base plate formed in an annular shape and supporting the plurality of springs arranged in the circumferential direction. The base plate has a plurality of through holes for inserting the contact portion to abut the contacted member when the spring contracts, and the contact portion is inserted and formed at the edge of each of the plurality of through holes. It has a plurality of tubular portions and a plurality of tubular portions. The tubular portion extends along the advancing / retreating direction of the piston.
　本発明によれば、ばね組立体とピストンとのずれを抑えつつ、ばね組立体のベース板の剛性を確保する技術を提供できる。 According to the present invention, it is possible to provide a technique for ensuring the rigidity of the base plate of the spring assembly while suppressing the displacement between the spring assembly and the piston.
実施例のばね組立体の斜視図である。It is a perspective view of the spring assembly of an Example. 図２（ａ）は、ばね組立体の側面図であり、図２（ｂ）は、ばね組立体の下面図である。FIG. 2A is a side view of the spring assembly, and FIG. 2B is a bottom view of the spring assembly. 取付時の基準状態のばね組立体の斜視図である。It is a perspective view of the spring assembly in a reference state at the time of mounting. 取付時の当接状態のばね組立体の斜視図である。It is a perspective view of the spring assembly in the contact state at the time of mounting. 取付状態のばね組立体の動作について説明するための図である。It is a figure for demonstrating operation of a spring assembly in a mounted state. 第１変形例のばね組立体の斜視図である。It is a perspective view of the spring assembly of the 1st modification. 図６に示すばね組立体の線分Ａ－Ａ断面図である。FIG. 6 is a cross-sectional view taken along the line segment AA of the spring assembly shown in FIG. 第２変形例のばね組立体の斜視図である。It is a perspective view of the spring assembly of the 2nd modification. 第３変形例のばね組付体の斜視図である。It is a perspective view of the spring assembly body of the 3rd modification.
　図１は、実施例のばね組立体１０の斜視図である。図１（ａ）は斜め上方から見た図であり、図１（ｂ）は斜め下方から見た図である。また、図２（ａ）は、ばね組立体１０の側面図であり、図２（ｂ）は、ばね組立体１０の下面図である。ばね組立体１０は、ベース板２０、支持板２２およびばね２４を備える。 FIG. 1 is a perspective view of the spring assembly 10 of the embodiment. FIG. 1 (a) is a view seen from diagonally above, and FIG. 1 (b) is a view seen from diagonally below. 2 (a) is a side view of the spring assembly 10, and FIG. 2 (b) is a bottom view of the spring assembly 10. The spring assembly 10 includes a base plate 20, a support plate 22, and a spring 24.
　ばね組立体１０は、車両のトランスミッションのクラッチ機構に設けられ、ピストンの位置を戻す弾性体として機能し、管部材の外周または内周に設けられる。ばね組立体１０は、ピストンと、ピストンが当接可能な被当接部材との間に介在する。ばね組立体１０は、ばね２４の軸方向に伸縮可能である。なお、以下の説明では、ばね２４の軸方向を単に軸方向という。 The spring assembly 10 is provided in the clutch mechanism of the transmission of the vehicle, functions as an elastic body for returning the position of the piston, and is provided on the outer circumference or the inner circumference of the pipe member. The spring assembly 10 is interposed between the piston and the contacted member to which the piston can come into contact. The spring assembly 10 can be expanded and contracted in the axial direction of the spring 24. In the following description, the axial direction of the spring 24 is simply referred to as the axial direction.
　ベース板２０および支持板２２は、金属材料で円環状にそれぞれ形成される。ベース板２０および支持板２２は、軸方向に対向し、ばね２４を挟持するようにばね２４の両端を支持する。 The base plate 20 and the support plate 22 are each formed of a metal material in an annular shape. The base plate 20 and the support plate 22 face each other in the axial direction and support both ends of the spring 24 so as to sandwich the spring 24.
　複数のばね２４は、コイルばねであって、ベース板２０および支持板２２に支持される。ばね２４の両端は、カシメによってベース板２０および支持板２２に固定される。複数のばね２４は、周方向に離れて、並列して配置される。 The plurality of springs 24 are coil springs and are supported by the base plate 20 and the support plate 22. Both ends of the spring 24 are fixed to the base plate 20 and the support plate 22 by caulking. The plurality of springs 24 are arranged in parallel, apart from each other in the circumferential direction.
　ベース板２０の筒部２６は、深絞り加工によって軸方向に沿って立設するよう形成される。筒部２６は、ピストンの進退方向に沿ってベース板２０の本体から延設する。筒部２６の内側には、貫通する貫通孔２８が形成される。筒部２６を形成することで、貫通孔２８周りのベース板２０の剛性を確保できる。 The tubular portion 26 of the base plate 20 is formed so as to be erected along the axial direction by deep drawing. The tubular portion 26 extends from the main body of the base plate 20 along the advancing / retreating direction of the piston. A through hole 28 is formed inside the tubular portion 26. By forming the tubular portion 26, the rigidity of the base plate 20 around the through hole 28 can be ensured.
　筒部２６は、図２（ａ）に示すように貫通孔２８の縁から支持板２２に向かって延出する。図２（ｂ）に示すように、筒部２６および貫通孔２８は、下面視にて長孔状に形成されるが、長孔状に限らず、楕円状や真円状に形成されてよい。筒部２６および貫通孔２８は、周方向に離れて複数形成される。また、複数の貫通孔２８の間にはばね２４をカシメするためのカシメ用孔３３が複数形成される。貫通孔２８およびカシメ用孔３３は、ばね組立体１０の中心軸から同径の位置に設けられる。筒部２６の軸方向高さは、ベース板２０の板厚の２倍から、自由状態におけるベース板２０および支持板２２の間隔の３／４までの範囲に設定されてよい。 As shown in FIG. 2A, the tubular portion 26 extends from the edge of the through hole 28 toward the support plate 22. As shown in FIG. 2B, the tubular portion 26 and the through hole 28 are formed in a long hole shape in a bottom view, but are not limited to the long hole shape and may be formed in an elliptical shape or a perfect circle shape. .. A plurality of tubular portions 26 and through holes 28 are formed apart from each other in the circumferential direction. Further, a plurality of caulking holes 33 for caulking the spring 24 are formed between the plurality of through holes 28. The through hole 28 and the caulking hole 33 are provided at positions having the same diameter from the central axis of the spring assembly 10. The axial height of the tubular portion 26 may be set in the range from twice the plate thickness of the base plate 20 to 3/4 of the distance between the base plate 20 and the support plate 22 in the free state.
　支持板２２の挿通孔３０は、図２（ｂ）に示すように長孔状に形成され、貫通孔２８と同軸に配置される。ピストンの当接部は、支持板２２側からベース板２０に向かって、貫通孔２８および挿通孔３０に挿入される。挿通孔３０は、ベース板２０の貫通孔２８より小さくなるように形成される。これにより、挿通孔３０がピストンの当接部の根元の動きを規制できる。 The insertion hole 30 of the support plate 22 is formed in an elongated shape as shown in FIG. 2B, and is arranged coaxially with the through hole 28. The contact portion of the piston is inserted into the through hole 28 and the insertion hole 30 from the support plate 22 side toward the base plate 20. The insertion hole 30 is formed so as to be smaller than the through hole 28 of the base plate 20. As a result, the insertion hole 30 can regulate the movement of the base of the contact portion of the piston.
　挿通孔３０の周りには周状段部３２が形成される。周状段部３２は、挿通孔３０の縁を段差状に形成したもので、ベース板２０に向かって突出している。周状段部３２により、挿通孔３０周りの支持板２２の剛性を確保できる。 A circumferential step portion 32 is formed around the insertion hole 30. The peripheral step portion 32 has an edge of the insertion hole 30 formed in a stepped shape, and projects toward the base plate 20. The circumferential step portion 32 can ensure the rigidity of the support plate 22 around the insertion hole 30.
　図３は、取付時の基準状態のばね組立体１０の斜視図である。図３では、ばね組立体１０に載置されたピストン３６を示す。ピストン３６は、複数の当接部３４を有しており、環状に形成される。当接部３４は、ピストン３６の本体から延設されて、柱状に突出し、貫通孔２８および挿通孔３０に挿入される。当接部３４は、貫通孔２８および挿通孔３０と同様に断面が長孔状に形成される。 FIG. 3 is a perspective view of the spring assembly 10 in the reference state at the time of mounting. FIG. 3 shows a piston 36 mounted on the spring assembly 10. The piston 36 has a plurality of contact portions 34 and is formed in an annular shape. The contact portion 34 extends from the main body of the piston 36, projects in a columnar shape, and is inserted into the through hole 28 and the insertion hole 30. The contact portion 34 has an elongated cross section like the through hole 28 and the insertion hole 30.
　ばね組立体１０は、初期荷重を加えた状態でクラッチ機構に取り付けられる。ばね組立体１０の基準状態とは、初期荷重のみを加えた取付状態をいい、ピストン３６および被当接部材に介在した取付状態でばね２４が最も伸びた状態をいう。 The spring assembly 10 is attached to the clutch mechanism with an initial load applied. The reference state of the spring assembly 10 refers to a mounted state in which only the initial load is applied, and refers to a state in which the spring 24 is most extended in a mounted state interposed between the piston 36 and the contacted member.
　ピストン３６は、支持板２２に同軸で載置されており、当接部３４は、挿通孔３０から筒部２６、貫通孔２８へと挿入されている。このように、当接部３４は基準状態で筒部２６に挿入されている。なお、当接部３４は、ベース板２０から突き出てはいない。 The piston 36 is coaxially mounted on the support plate 22, and the contact portion 34 is inserted from the insertion hole 30 into the cylinder portion 26 and the through hole 28. In this way, the contact portion 34 is inserted into the cylinder portion 26 in the reference state. The contact portion 34 does not protrude from the base plate 20.
　図４は、取付時の当接状態のばね組立体１０の斜視図である。図４はばね組立体１０に載置されるピストン３６を示す。当接状態とは、当接部３４が不図示の被当接部材に当接した状態をいい、クラッチ機構が接続した状態をいう。図３に示すばね組立体１０の基準状態ではクラッチ機構は接続されていない。 FIG. 4 is a perspective view of the spring assembly 10 in the contact state at the time of mounting. FIG. 4 shows a piston 36 mounted on the spring assembly 10. The contact state means a state in which the contact portion 34 is in contact with a contacted member (not shown), and means a state in which the clutch mechanism is connected. The clutch mechanism is not connected in the reference state of the spring assembly 10 shown in FIG.
　当接状態のばね組立体１０は、ばね２４が縮み、当接部３４が貫通孔２８を突き抜けて、ベース板２０の下方に出ている。 In the spring assembly 10 in the contact state, the spring 24 contracts, the contact portion 34 penetrates the through hole 28, and protrudes below the base plate 20.
　図５は、取付状態のばね組立体１０の動作について説明するための図である。図５（ａ）は基準状態のばね組立体１０の部分断面図であり、図５（ｂ）は当接状態のばね組立体１０の部分断面図である。 FIG. 5 is a diagram for explaining the operation of the spring assembly 10 in the mounted state. FIG. 5A is a partial cross-sectional view of the spring assembly 10 in the reference state, and FIG. 5B is a partial cross-sectional view of the spring assembly 10 in the contact state.
　ばね組立体１０は、管部材４２の内側に配置され、台座部４０に載置される。台座部４０は、円環状に形成され、管部材４２の内周面から張り出し、ばね組立体１０の下方への移動を規制する。ばね組立体１０は、当接部３４と被当接部材３８とに介在しており、ばね２４は、当接部３４を被当接部材３８から離れる方向に付勢する。 The spring assembly 10 is arranged inside the pipe member 42 and is placed on the pedestal portion 40. The pedestal portion 40 is formed in an annular shape and projects from the inner peripheral surface of the pipe member 42 to restrict the downward movement of the spring assembly 10. The spring assembly 10 is interposed between the contact portion 34 and the contacted member 38, and the spring 24 urges the contact portion 34 in a direction away from the contacted member 38.
　図５（ａ）に示す基準状態のばね組立体１０では、当接部３４が筒部２６に挿入されているものの、被当接部材３８から離れている。図５（ｂ）に示す当接状態のばね組立体１０では、当接部３４が貫通孔２８を突き抜けて被当接部材３８に当接している。 In the spring assembly 10 in the reference state shown in FIG. 5A, the contact portion 34 is inserted into the tubular portion 26, but is separated from the contacted member 38. In the spring assembly 10 in the contact state shown in FIG. 5B, the contact portion 34 penetrates the through hole 28 and is in contact with the contacted member 38.
　筒部２６は、当接部３４が被当接部材３８に向かって進行する際のガイドとして機能する。ばね２４の伸縮時に当接部３４の進退をガイドすることで、ばね２４が過度に倒れることを抑え、ばね２４が座屈することを抑えられる。 The tubular portion 26 functions as a guide when the abutting portion 34 advances toward the abutted member 38. By guiding the advancing and retreating of the contact portion 34 when the spring 24 expands and contracts, it is possible to prevent the spring 24 from being excessively tilted and to prevent the spring 24 from buckling.
　当接部３４の先端部３４ａは、ばね組立体１０の基準状態において、ベース板２０により手前側で筒部２６の中に位置する。つまり、当接部３４は、筒部２６に挿入された状態でベース板２０から突き出ないように設定される。これにより、当接部３４が常に筒部２６に挿入されているため、筒部２６のガイドを確実に受けることができる。また、当接部３４の先端部３４ａが被当接部材３８に近い位置に配置することができ、当接部３４のストローク量を短く設定することが可能となる。そのため、ピストン３６および被当接部材３８を接近させて設け、クラッチ機構の軸方向長さを短く小型にできる。当接部３４は、支持板２２の挿通孔３０およびベース板２０の筒部２６にそれぞれ挿入されるため、２箇所で径方向のガイドを受けられる。 The tip portion 34a of the contact portion 34 is located in the tubular portion 26 on the front side by the base plate 20 in the reference state of the spring assembly 10. That is, the contact portion 34 is set so as not to protrude from the base plate 20 in a state of being inserted into the tubular portion 26. As a result, since the contact portion 34 is always inserted into the cylinder portion 26, the guide of the cylinder portion 26 can be reliably received. Further, the tip portion 34a of the contact portion 34 can be arranged at a position close to the contacted member 38, and the stroke amount of the contact portion 34 can be set short. Therefore, the piston 36 and the contacted member 38 can be provided close to each other to shorten the axial length of the clutch mechanism and reduce the size. Since the abutting portion 34 is inserted into the insertion hole 30 of the support plate 22 and the tubular portion 26 of the base plate 20, respectively, the abutting portion 34 can receive radial guides at two locations.
　挿通孔３０は、ベース板２０の貫通孔２８より小さくなるように形成されているため、挿通孔３０と当接部３４の外周面とのクリアランスは、貫通孔２８と当接部３４の外周面とのクリアランス以下になるように設定される。これにより、当接部３４の径方向の動きを、当接部３４の根元側で制限でき、支持板２２とピストン３６のずれを制限できる。 Since the insertion hole 30 is formed so as to be smaller than the through hole 28 of the base plate 20, the clearance between the insertion hole 30 and the outer peripheral surface of the contact portion 34 is the outer peripheral surface of the through hole 28 and the contact portion 34. It is set so that it is less than or equal to the clearance with. As a result, the radial movement of the contact portion 34 can be restricted on the root side of the contact portion 34, and the displacement between the support plate 22 and the piston 36 can be limited.
　周状段部３２が形成されることで、当接部３４の根元の外周面に湾曲したアールが付与されても挿通孔３０の縁に干渉することを避けることができ、ピストン３６を支持板２２に密着させることができる。 By forming the circumferential step portion 32, it is possible to avoid interfering with the edge of the insertion hole 30 even if a curved radius is given to the outer peripheral surface of the base of the contact portion 34, and the piston 36 is supported by the support plate. It can be brought into close contact with 22.
　図６は、第１変形例のばね組立体１００の斜視図である。また、図７は、図６に示すばね組立体１００の線分Ａ－Ａ断面図である。第１変形例のばね組立体１００は、図１（ａ）に示すばね組立体１０と比べて、支持板１２２が内挿筒部４４を有する点で異なる。 FIG. 6 is a perspective view of the spring assembly 100 of the first modification. Further, FIG. 7 is a cross-sectional view taken along line AA of the spring assembly 100 shown in FIG. The spring assembly 100 of the first modification is different from the spring assembly 10 shown in FIG. 1A in that the support plate 122 has an interpolation tube portion 44.
　支持板１２２の内挿筒部４４は、挿通孔３０の縁から立設し、断面が長孔状に形成される。内挿筒部４４は、筒部２６に挿入される。これにより、ベース板２０および支持板２２がずれることを抑えることができる。また、内挿筒部４４を筒部２６に挿入することで、当接部３４が筒部２６の先端に接触することを避けられる。 The interpolation tube portion 44 of the support plate 122 is erected from the edge of the insertion hole 30 and has an elongated cross section. The interpolation cylinder portion 44 is inserted into the cylinder portion 26. As a result, it is possible to prevent the base plate 20 and the support plate 22 from being displaced. Further, by inserting the interpolation cylinder portion 44 into the cylinder portion 26, it is possible to prevent the contact portion 34 from coming into contact with the tip of the cylinder portion 26.
　図８は、第２変形例のばね組立体２００の斜視図である。なお、図８ではばね組立体２００が当接状態になっており、ばね２４が縮んでいる。第２変形例のばね組立体２００は、図１（ａ）に示すばね組立体１０と比べて、ベース板２２０および支持板２２２が同形状である点が異なる。 FIG. 8 is a perspective view of the spring assembly 200 of the second modified example. In FIG. 8, the spring assembly 200 is in contact with the spring assembly 200, and the spring 24 is contracted. The spring assembly 200 of the second modification is different from the spring assembly 10 shown in FIG. 1A in that the base plate 220 and the support plate 222 have the same shape.
　ベース板２２０は、第１貫通孔２２８ａおよび第２貫通孔２２８ｂ（これらを区別しない場合「貫通孔２２８」という）と、第１貫通孔２２８ａの縁に形成された筒部２２６とを有する。つまり、第１貫通孔２２８ａには筒部２２６が形成され、第２貫通孔２２８ｂには筒部２２６が形成されない。 The base plate 220 has a first through hole 228a and a second through hole 228b (when these are not distinguished, it is referred to as a "through hole 228"), and a tubular portion 226 formed on the edge of the first through hole 228a. That is, the tubular portion 226 is formed in the first through hole 228a, and the tubular portion 226 is not formed in the second through hole 228b.
　支持板２２２は、第１挿通孔２３０ａおよび第２挿通孔２３０ｂ（これらを区別しない場合「挿通孔２３０」という）と、第１挿通孔２３０ａの縁に形成された筒部４６とを有する。第２挿通孔２３０ｂには筒部４６が形成されない。 The support plate 222 has a first insertion hole 230a and a second insertion hole 230b (when these are not distinguished, it is referred to as "insertion hole 230"), and a tubular portion 46 formed on the edge of the first insertion hole 230a. The tubular portion 46 is not formed in the second insertion hole 230b.
　ベース板２２０の筒部２２６は、支持板２２２の第２挿通孔２３０ｂに対向し、支持板２２２の筒部４６は、ベース板２２０の第２貫通孔２２８ｂに対向する。これにより、筒部２２６と筒部４６が干渉しないようにでき、それぞれが当接部３４の進退をガイドできる。ベース板２２０および支持板２２２が同形状に形成されることで、製造コストを抑えることができる。また、ばね組立体１０がピストン３６および被当接部材３８の間に設ける際に、ばね組立体１０の取付方向が問われないため、容易に取り付けることができる。 The tubular portion 226 of the base plate 220 faces the second insertion hole 230b of the support plate 222, and the tubular portion 46 of the support plate 222 faces the second through hole 228b of the base plate 220. As a result, the cylinder portion 226 and the cylinder portion 46 can be prevented from interfering with each other, and each can guide the advance / retreat of the contact portion 34. By forming the base plate 220 and the support plate 222 in the same shape, the manufacturing cost can be suppressed. Further, when the spring assembly 10 is provided between the piston 36 and the contacted member 38, the spring assembly 10 can be easily attached because the attachment direction of the spring assembly 10 does not matter.
　ベース板２２０および支持板２２２には、誤組付用の孔部４８が形成される。例えば孔部４８に入る突部をピストン３６に設けることで、ピストン３６の回転位置を定め、当接部３４が第１挿通孔２３０ａおよび第２挿通孔２３０ｂのうち、第２挿通孔２３０ｂに挿入されるように設定できる。 Holes 48 for erroneous assembly are formed in the base plate 220 and the support plate 222. For example, by providing the piston 36 with a protrusion that enters the hole 48, the rotation position of the piston 36 is determined, and the contact portion 34 is inserted into the second insertion hole 230b of the first insertion hole 230a and the second insertion hole 230b. Can be set to be.
　図９は、第３変形例のばね組付体３００の斜視図である。第３変形例のばね組付体３００は、図１（ａ）に示すばね組立体１０と比べて、支持板２２が設けられていない。この態様によっても筒部２６が当接部３４の進退をガイドできる。この態様では、ばね２４が一端のみベース板２０に支持され、ピストン３６を直接付勢する。 FIG. 9 is a perspective view of the spring assembly 300 of the third modification. The spring assembly 300 of the third modification is not provided with the support plate 22 as compared with the spring assembly 10 shown in FIG. 1 (a). Also in this aspect, the tubular portion 26 can guide the advance / retreat of the contact portion 34. In this aspect, the spring 24 is supported by the base plate 20 at only one end and directly urges the piston 36.
　本発明は上述の各実施例に限定されるものではなく、当業者の知識に基づいて各種の設計変更等の変形を各実施例に対して加えることも可能であり、そのような変形が加えられた実施例も本発明の範囲に含まれうる。 The present invention is not limited to each of the above-described embodiments, and modifications such as various design changes can be added to each embodiment based on the knowledge of those skilled in the art, and such modifications are added. The examples given may also be included in the scope of the present invention.
　本発明は、複数のバネを保持するばね組立体に関する。 The present invention relates to a spring assembly that holds a plurality of springs.
　１０　ばね組立体、　２０　ベース板、　２２　支持板、　２４　ばね、　２６　筒部、　２８　貫通孔、　３０　挿通孔、　３２　周状段部、　３４　当接部、　３４ａ　先端部、　３６　ピストン、　３８　被当接部材、　４０　台座部、　４２　管部材。 10 spring assembly, 20 base plate, 22 support plate, 24 spring, 26 cylinder part, 28 through hole, 30 insertion hole, 32 circumferential step part, 34 contact part, 34a tip part, 36 piston, 38 contacted part Member, 40 pedestal, 42 tube member.

Claims (5)

  1. 　ピストンと、前記ピストンから延設された当接部が当接可能な被当接部材との間に介在するばね組立体であって、
    　前記ピストンを前記被当接部材から離れる方向に付勢する複数のばねと、
    　環状に形成され、周方向に並んだ複数の前記ばねを支持するベース板と、を備え、
    　前記ベース板は、
    　前記ばねが縮んだときに前記当接部を挿通させて前記被当接部材に当接させるための複数の貫通孔と、
    　前記当接部が挿入され、複数の前記貫通孔の縁にそれぞれ形成される複数の筒部と、を有し、
    　前記筒部は、前記ピストンの進退方向に沿って延設することを特徴とするばね組立体。     A spring assembly that is interposed between a piston and a contacted member to which a contact portion extending from the piston can be contacted.
    A plurality of springs that urge the piston away from the contacted member, and
    A base plate formed in an annular shape and supporting a plurality of the springs arranged in the circumferential direction is provided.
    The base plate is
    A plurality of through holes for inserting the contact portion into contact with the contacted member when the spring contracts, and a plurality of through holes.
    It has a plurality of tubular portions into which the abutting portion is inserted and formed on the edges of the plurality of through holes, respectively.
    The tubular portion is a spring assembly characterized in that it extends along the advancing / retreating direction of the piston.
  2. 　環状に形成され、前記ベース板に対向して前記ベース板と複数の前記ばねを挟んで支持する支持板をさらに備え、
    　前記支持板は、前記当接部を挿通する挿通孔を有することを特徴とする請求項１に記載のばね組立体。     A support plate which is formed in an annular shape and is supported by sandwiching the base plate and a plurality of the springs so as to face the base plate is further provided.
    The spring assembly according to claim 1, wherein the support plate has an insertion hole through which the contact portion is inserted.
  3. 　前記挿通孔と前記当接部の外周面とのクリアランスは、前記貫通孔と前記当接部の外周面とのクリアランス以下になるように設定されることを特徴とする請求項２に記載のばね組立体。 The spring according to claim 2, wherein the clearance between the insertion hole and the outer peripheral surface of the contact portion is set to be equal to or less than the clearance between the through hole and the outer peripheral surface of the contact portion. Assembly.
  4. 　前記当接部の先端部は、初期荷重が付与された前記ばね組立体の基準状態において、前記ベース板により手前側で前記筒部の中に位置することを特徴とする請求項１から３のいずれかに記載の請求項１から３のいずれかに記載のばね組立体。 Claims 1 to 3, wherein the tip end portion of the contact portion is located in the tubular portion on the front side by the base plate in a reference state of the spring assembly to which an initial load is applied. The spring assembly according to any one of claims 1 to 3.
  5. 　前記支持板は、複数の前記挿通孔の縁にそれぞれ立設される筒部を有し、
    　前記支持板および前記ベース板は、同形状に形成されることを特徴とする請求項２または３に記載のばね組立体。     The support plate has a tubular portion that is erected on the edge of each of the plurality of insertion holes.
    The spring assembly according to claim 2 or 3, wherein the support plate and the base plate are formed in the same shape.
PCT/JP2020/042638 2019-11-21 2020-11-16 Spring assembly WO2021100662A1 (en)

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JP2021558373A JP7288972B2 (en) 2019-11-21 2020-11-16 spring assembly

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JP2019210806 2019-11-21
JP2019-210806 2019-11-21

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126032U (en) * 1991-05-02 1992-11-17 ダイハツ工業株式会社 Lubrication structure of clutch device
JP3002934U (en) * 1994-04-11 1994-10-11 中央発条工業株式会社 Spring assembly
JP2003035327A (en) * 2001-07-24 2003-02-07 Daihatsu Motor Co Ltd Multiple disc brake for automatic transmission
JP2017515041A (en) * 2015-04-17 2017-06-08 ハノン システムズ Electric compressor
JP2019065928A (en) * 2017-09-29 2019-04-25 ジヤトコ株式会社 Piston mechanism of automatic transmission
JP2019078375A (en) * 2017-10-26 2019-05-23 中央発条工業株式会社 Spring assembly, energizing body, and pressing method
JP2019078374A (en) * 2017-10-26 2019-05-23 中央発条工業株式会社 Spring assembly, energizing body, and pressing method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126032U (en) * 1991-05-02 1992-11-17 ダイハツ工業株式会社 Lubrication structure of clutch device
JP3002934U (en) * 1994-04-11 1994-10-11 中央発条工業株式会社 Spring assembly
JP2003035327A (en) * 2001-07-24 2003-02-07 Daihatsu Motor Co Ltd Multiple disc brake for automatic transmission
JP2017515041A (en) * 2015-04-17 2017-06-08 ハノン システムズ Electric compressor
JP2019065928A (en) * 2017-09-29 2019-04-25 ジヤトコ株式会社 Piston mechanism of automatic transmission
JP2019078375A (en) * 2017-10-26 2019-05-23 中央発条工業株式会社 Spring assembly, energizing body, and pressing method
JP2019078374A (en) * 2017-10-26 2019-05-23 中央発条工業株式会社 Spring assembly, energizing body, and pressing method

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