JPH01128003U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案による２段式アクチユエータ
の一実施例を示す初期位置の横断平面図、第２図
は第１図に示すものの１段目のストローク終端位
置の横断平面図、第３図は第１図のものの要部の
拡大縦断面図、第４図は第３図のものの右側面図
、第５図はバルブが開いた状態を示す拡大縦断面
図、第６図は従来のものの一例を示す初期位置の
横断平面図、第７図は負圧力とストロークとの関
係を示すグラフである。 １，３１……ロアーロツド、２，３２……アツ
パーロツド、３，４，７，８，３３，３４，３７
，３８……ダイアフラムリテーナ、５，９，３５
，３９……ダイアフラム、６，１０，３６，４０
……ナツト、１１，４１……ハウジング、１２，
４２……ロアーカツプ、１３，４３……アツパー
カツプ、１４……大径部、１５……カラー、１６
……段部、１７，４７，６１……かしめ部、１８
，４８，６２……ジヨイント、１９，２０，４９
，５０……ダイアフラム室、２１，５１……アツ
パースプリング、２２，５２……センターフツク
、２３，５３……ロアースプリング、２４，５４
……ブラケツト、２５……貫通孔、２６……バル
ブ、２７……ホルダ、２８……ピン、６０……セ
ンターケース、６３……溶接ボルト、６４……ス
プリングワツシヤ、６５……ナツト。 FIG. 1 is a cross-sectional plan view of an embodiment of the two-stage actuator according to this invention at the initial position, FIG. 2 is a cross-sectional plan view of the first stage of the actuator shown in FIG. Figure 1 is an enlarged vertical cross-sectional view of the main parts of the valve, Figure 4 is a right side view of the valve shown in Figure 3, Figure 5 is an enlarged vertical cross-sectional view showing the valve in an open state, and Figure 6 is an example of the conventional valve. FIG. 7 is a graph showing the relationship between negative pressure and stroke. 1, 31... lower rod, 2, 32... upper rod, 3, 4, 7, 8, 33, 34, 37
, 38...Diaphragm retainer, 5, 9, 35
, 39... diaphragm, 6, 10, 36, 40
...Natsuto, 11,41...Housing, 12,
42...Lower cup, 13, 43...Upper cup, 14...Large diameter section, 15...Color, 16
...Stepped portion, 17, 47, 61...Caulked portion, 18
,48,62... joint, 19,20,49
,50...Diaphragm chamber, 21,51...Upper spring, 22,52...Center hook, 23,53...Lower spring, 24,54
... Bracket, 25 ... Through hole, 26 ... Valve, 27 ... Holder, 28 ... Pin, 60 ... Center case, 63 ... Welding bolt, 64 ... Spring washer, 65 ... Nut.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ロツド１，２の軸線方向に間隔を隔てて２段の
ダイアフラム５，９を装着し、これらのダイアフ
ラム５，９の周縁部を筒状のハウジング１１に固
着して２つのダイアフラム室１９，２０を形成し
、これらのダイアフラム室１９，２０に負圧を適
用して前記ロツド１，２を２段ストロークで進退
させるようになつた２段式アクチユエータにおい
て、前記ハウジング１１を、１段目の前記ダイア
フラム室１９をなすとともに負圧源に連なるジヨ
イント１８を具えたアツパーカツプ１３と、２段
目の前記ダイアフラム室２０をなすとともに負圧
源に連なるジヨイントを具えていないロアーカツ
プ１２とで構成し、このロアーカツプ１２に一端
が前記アツパーカツプ１３とかしめられる大径部
１４を設け、この大径部１４にカラー１５を挿入
してその両端に前記各ダイアフラム５，９の周縁
部を固着し、また１段目の前記ダイアフラム９に
バルブ２６を設け、前記１段目のダイアフラム室
１９に、前記１段目のダイアフラム９がストロー
ク終端に達したとき前記バルブ２６を開けて前記
両ダイアフラム室５，９を連通させるピン２８を
設けたことを特徴とする２段式アクチユエータ。 Two stages of diaphragms 5 and 9 are mounted at intervals in the axial direction of the rods 1 and 2, and the peripheral edges of these diaphragms 5 and 9 are fixed to a cylindrical housing 11 to form two diaphragm chambers 19 and 20. In the two-stage actuator, the rods 1 and 2 are moved forward and backward in a two-stage stroke by applying negative pressure to the diaphragm chambers 19 and 20. The lower cup 12 is composed of an upper cup 13 that forms a chamber 19 and is provided with a joint 18 that is connected to a negative pressure source, and a lower cup 12 that forms the second stage diaphragm chamber 20 and is not provided with a joint that is connected to a negative pressure source. A large diameter portion 14 is provided at one end of which is caulked with the upper cup 13, a collar 15 is inserted into this large diameter portion 14, and the peripheral edges of each of the diaphragms 5 and 9 are fixed to both ends of the collar 15. A valve 26 is provided on the diaphragm 9, and a pin 28 is provided in the first stage diaphragm chamber 19 to open the valve 26 and communicate the two diaphragm chambers 5 and 9 when the first stage diaphragm 9 reaches the end of its stroke. A two-stage actuator characterized by being provided with.