JPS6185737U

JPS6185737U -

Info

Publication number: JPS6185737U
Application number: JP17038284U
Authority: JP
Priority date: 1984-11-12
Filing date: 1984-11-12
Publication date: 1986-06-05

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る液圧緩衝器の
全体断面図、第２図は第１図のうちピストン近傍
の拡大断面図、第３図は第１図のうちバルブケー
ス近傍の拡大断面図、第４図は第１図のうちピス
トンの拡大断面図、第５図は第４図のピストンの
平面図、第６図は第４図のピストンの樹脂バンド
の素材である樹脂シートの平面図、第７図は第６
図の樹脂シートをピストン本体一端に圧入して樹
脂コーンを形成したときの断面図、第８図は樹脂
コーンをピストン本体外周に押圧成形したときの
断面図、第９図は第１図の液圧緩衝器の緩衝力特
性図、第１０図は従来のリングを有するピストン
の部分断面図、第１１図は第１０図のリングの斜
視図、第１２図は従来のバンドを有するピストン
の部分断面図、第１３図は第１２図のバンドの斜
視図、第１４図は従来のリングとバンドの両方を
有するピストンの部分断面図、第１５図は従来の
樹脂シートを貼りつけたピストンの部分断面図、
である。１……シリンダ、２……ピストン、３……ピス
トンロツド、４……Ａ室、５……Ｂ室、６……オ
イル、７……バルブケース、８……Ｃ室、９……
アウタシエル、１０……Ｄ室、１１，２２……オ
リフイス、１２，２１……ノンリターンバルブ、
１３……シート、１４……ノンリターンバルブス
プリング、１５……穴、１６，２３……ポート、
１７，２４……リーフバルブ、１８……スプリン
グシート、１９……コンプレツシヨンスプリング
、２０……コニカルスプリング、２５……ピスト
ン本体、２６……樹脂バンド、２６ａ……スカー
ト（伸側）、２６ｂ……スカート（縮み側）、２
７……環状の突起、２８……樹脂シート、２９，
３２……テーパ、３０，３３……治具、３１……
樹脂コーン、３４……空隙。 Fig. 1 is an overall sectional view of a hydraulic shock absorber according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the vicinity of the piston in Fig. 1, and Fig. 3 is an enlarged sectional view of the vicinity of the valve case in Fig. 1. 4 is an enlarged sectional view of the piston in FIG. 1, FIG. 5 is a plan view of the piston in FIG. 4, and FIG. 6 is a resin sheet that is the material of the resin band of the piston in FIG. 4. The plan view of Fig. 7 is the 6th
A cross-sectional view of the resin sheet shown in the figure is press-fitted into one end of the piston body to form a resin cone, Figure 8 is a cross-sectional view of the resin cone press-molded around the outer periphery of the piston body, and Figure 9 is a cross-sectional view of the resin sheet shown in Figure 1. A characteristic diagram of the damping force of a pressure shock absorber. Fig. 10 is a partial sectional view of a piston with a conventional ring. Fig. 11 is a perspective view of the ring in Fig. 10. Fig. 12 is a partial sectional view of a piston with a conventional band. Figure 13 is a perspective view of the band shown in Figure 12, Figure 14 is a partial cross-section of a conventional piston with both a ring and a band, and Figure 15 is a partial cross-section of a piston with a conventional resin sheet attached. figure,
It is. 1... Cylinder, 2... Piston, 3... Piston rod, 4... Chamber A, 5... Chamber B, 6... Oil, 7... Valve case, 8... Chamber C, 9...
Outer shell, 10... D chamber, 11, 22... Orifice, 12, 21... Non-return valve,
13... Seat, 14... Non-return valve spring, 15... Hole, 16, 23... Port,
17, 24... Leaf valve, 18... Spring seat, 19... Compression spring, 20... Conical spring, 25... Piston body, 26... Resin band, 26a... Skirt (growth side), 26b ...Skirt (shrinking side), 2
7... Annular projection, 28... Resin sheet, 29,
32... Taper, 30, 33... Jig, 31...
Resin cone, 34... void.

Claims

[Claims for Utility Model Registration] (1) The piston of a hydraulic shock absorber has a piston slidably inserted into the cylinder, and a pair of annular protrusions extending in the circumferential direction are provided on the outer periphery near both axial ends of the piston. A resin band is fitted around the outer periphery of a piston body, and both ends of the resin band on the expansion side and contraction side are extended in the axial direction of the piston from the contact portion of the resin band with the piston body. A hydraulic shock absorber characterized by forming a skirt. (2) The hydraulic shock absorber according to claim 1, wherein a squeeze wrinkle is formed on the extension side of the skirt. (3) The hydraulic shock absorber according to claim 1, which has a gap between the outer periphery between the pair of annular protrusions of the piston body and the resin band.