TW201712256A - Piston structure of pneumatic cylinder for effectively enhancing sealing effect and structural strength with low manufacturing cost and easy assembly - Google Patents
Piston structure of pneumatic cylinder for effectively enhancing sealing effect and structural strength with low manufacturing cost and easy assembly Download PDFInfo
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本發明係有關於壓力缸之活塞結構，特別是指一體包覆有金屬材質之活塞，可有效提升密封效果及結構強度，且其製造成本低、組裝容易，並具密封性佳且耐用之功效者。 The invention relates to a piston structure of a pressure cylinder, in particular to a piston integrally coated with a metal material, which can effectively improve the sealing effect and structural strength, and has the advantages of low manufacturing cost, easy assembly, good sealing performance and durability. By.
按，壓力缸內設有活塞結構，其外徑約等於壓力缸內徑，且將壓力缸內部區隔成二容室，該二容室中以結構應用區分大致可分為氣壓式、油壓式及氣油壓複合式，該活塞可於壓力缸內滑動，以改變壓力缸包圍的容積，或傳遞壓力缸內氣體或油體所施加之壓力。其中氣壓式或油壓式係指單以利用氣體或油體的特性，使承受力量之活塞桿產生阻尼值者；氣油壓複合式則係利用氣體可壓縮之特性搭配液壓油之流通，而使承受力量之活塞桿產生阻尼值者。 Pressing, the pressure cylinder is provided with a piston structure, the outer diameter of which is approximately equal to the inner diameter of the pressure cylinder, and the inner portion of the pressure cylinder is divided into two chambers, and the two chambers can be divided into a pneumatic type and a hydraulic pressure by structural application. In combination with a gas-oil pressure type, the piston can slide in the pressure cylinder to change the volume enclosed by the pressure cylinder or to transmit the pressure exerted by the gas or oil body in the pressure cylinder. The pneumatic or hydraulic type refers to the use of the characteristics of the gas or the oil body to make the piston rod with the force to generate the damping value; the gas-oil pressure composite type uses the gas compressible characteristic to match the circulation of the hydraulic oil, and The piston rod that receives the force produces a damping value.
一般常見之活塞係呈中空環圈狀，其中央設有一軸孔，將一活塞桿穿設軸孔並與該活塞組接結合，該活塞受活塞桿帶動且相對壓力缸位移作動，提供傳遞壓力之功效，且該活塞桿與一油室之間的縫隙被活塞堵住，以避免氣體或油體漏出。該活塞係為可適度變型之彈性材質，然而因活塞桿作動位移時活塞軸心容易因偏擺產生變型而造成漏氣或漏油之缺弊，遂有業者於活 塞環面設有環槽，且於該環槽設有補充件，以提升其抵抗軸心偏擺時對活塞本身的抗壓縮應力，可防止因軸心偏擺所造成的漏氣或漏油問題發生。 Generally, the piston system has a hollow ring shape, and a shaft hole is arranged in the center thereof. A piston rod is threaded through the shaft hole and coupled with the piston assembly. The piston is driven by the piston rod and is displaced relative to the pressure cylinder to provide transmission pressure. The effect is that the gap between the piston rod and an oil chamber is blocked by the piston to prevent gas or oil from leaking out. The piston is an elastic material that can be appropriately modified. However, due to the displacement of the piston rod, the piston shaft is prone to deformation due to yaw deformation, which causes air leakage or oil leakage. The ring surface is provided with a ring groove, and a supplemental piece is arranged in the ring groove to improve the anti-compression stress against the piston itself when resisting the eccentricity of the shaft, thereby preventing leakage or oil leakage caused by the eccentricity of the shaft center. The problem has occurred.
常見具有填充件之活塞結構，該填充件依材質之應用上又可分為彈性材質及金屬材質。 Commonly used as a piston structure with a filling member, the filling member can be further divided into an elastic material and a metal material depending on the application of the material.
按，習知具彈性材質填充件之活塞結構，如國內第090223848號新型專利所揭露之「油封結構改良」，係將油封本體環面底側所具設內凹之環槽開口端處，於其開口端之內、外兩側突設共同形成包含至少有三點的唇封點，藉此與軸心及其相對的裝設內壁面產生具有穩固的三點支撐定位效果，而可有效防止油封本體受油壓壓力作用而產生傾斜偏心漏油的缺失；且，在該油封本體環槽內填裝有彈性材質的填充件，以提昇其抵抗軸心偏擺時對油封本身的抗壓縮應力，可防止因軸心本身偏擺所造成的漏油現象發生；又，於鄰近該油封本體環槽開口端處的內外兩側週緣佈設有若干個可供油膜回流的缺口，俾使該油封本體可將附著於軸心表面上毛細孔的油膜經由其缺口回流回收；藉該等結構改良，可防止油封受油壓作用之後，產生傾斜位移偏心，造成漏油現象的發生，同時可提供軸心在往復作動過程中能將附著在軸心表面上毛細孔的油膜加以回收，並可改善油壓作動位移時軸心本身因偏擺所造成的漏油現象缺失。 According to the piston structure of the elastic material filling member, the "oil seal structure improvement" disclosed in the new patent No. 090223848 is provided at the open end of the annular groove of the bottom surface of the oil seal body. The inner and outer sides of the open end of the open end jointly form a lip seal point including at least three points, thereby generating a stable three-point support positioning effect with the axial center and the opposite inner wall surface thereof, thereby effectively preventing the oil seal The body is subjected to oil pressure and pressure to produce a lack of tilting eccentric oil leakage; and a filling member of elastic material is filled in the annular groove of the oil seal body to improve the anti-compression stress of the oil seal itself when resisting the axial deflection. The oil leakage caused by the yaw of the shaft itself can be prevented from occurring; and a plurality of gaps for the oil film returning are disposed on the inner and outer sides of the opening end of the annular groove of the oil seal body, so that the oil seal body can be The oil film attached to the capillary pores on the surface of the shaft core is recovered by backflow through the notch; by the improvement of the structure, the oil seal can be prevented from being eccentrically inclined after the oil seal is applied, thereby causing oil leakage. , While providing axial reciprocating actuator capable of adhering process in the axial surface of the capillary film is recovered, the oil pressure can be improved own axis due to the lack of oil leakage caused by the yawing motion of the displacement.
習知具金屬材質填充件之活塞結構，如國內第087219017號新型專利所揭露之「氣壓棒之灌氣防漏環」，該灌氣 防漏環乃組裝在一氣壓棒之一外缸管內，上述外缸管內部裝設有一同軸之內缸管，於內缸管內部形成一內氣室，在內、外缸管間形成一可和內氣室相通之外氣室，於內、外缸管上再組裝一可軸向位移之活塞桿，上述活塞桿位於內氣室的一軸端上組裝一活塞；而該灌氣防漏環具有一可適度變形之基座，及一嵌設在基座上之金屬墊片，其中，該基座上具有一環基部，此基部上開設一供活塞桿穿伸的軸孔，在軸孔周緣突出一環內環壁，其中，該內環壁上突出一環可束緊活塞桿之束緊部，以及一環向內氣室漸次收束之進氣斜面，其特徵在於：該外環壁上突出兩環可和外缸管之內壁面緊密貼合之防漏突緣，致使灌氣時，僅能由該進氣斜面導入內氣室內部。 A piston structure having a metal filler member, such as a gas pressure leakage preventing ring of a gas pressure bar disclosed in the Japanese Patent No. 087219017 The anti-leakage ring is assembled in an outer cylinder tube of one of the air pressure rods. The outer cylinder tube is internally provided with a coaxial inner cylinder tube, an inner air chamber is formed inside the inner cylinder tube, and a inner air chamber is formed between the inner and outer cylinder tubes. An axially displaceable gas chamber is disposed on the inner and outer cylinder tubes, and an axially displaceable piston rod is assembled on the inner and outer cylinder tubes, wherein the piston rod is assembled on a shaft end of the inner air chamber to assemble a piston; and the gas filling is leakproof The ring has a base that is moderately deformed, and a metal gasket embedded on the base, wherein the base has a ring base, and the base has a shaft hole for the piston rod to penetrate, and the shaft hole The peripheral edge protrudes from the inner ring wall of the ring, wherein a ring protruding from the inner ring wall can tighten the tightening portion of the piston rod, and a ring inclined portion of the inner air chamber gradually converging, wherein the outer ring wall protrudes The two rings can be closely attached to the inner wall surface of the outer cylinder tube to prevent leaking flanges, so that when the gas is filled, only the air inlet slope can be introduced into the inner air chamber.
前者油封本體環面底側所具設內凹之環槽開口端處內、外兩側突設共同形成包含至少有三點的唇封點，藉此與軸心及其相對的裝設內壁面產生具有穩固的三點支撐定位效果，而可有效防止油封本體受油壓壓力作用而產生傾斜偏心漏油的缺失，且在該油封本體環槽內填裝有彈性材質的填充件，以提昇其抵抗軸心偏擺對油壓的抗壓縮應力，可防止因軸心本身偏擺所造成的漏油現象發生，又於鄰近該油封本體環槽開口端處的內外兩側週緣佈設有若干個可供液壓油油膜回流的缺口，俾使該油封本體可將附著於軸心表面上的油膜經由其缺口回流回收；後者灌氣防漏環上具有一與氣壓棒之外缸管相貼合的外環壁，以及一可束緊氣 壓棒之活塞桿的內環壁，在外環壁上突出兩環可緊靠在外缸管內壁面之防漏突緣，於內環壁上突出一環束緊活塞桿之束緊部，以束緊部為分界在內環壁上形成一環靠向氣壓棒內側之封閉斜面，以及一靠向氣壓棒外側之進氣斜面，當氣壓棒在權氣時，氣體可經由進氣斜面進入氣壓棒內部，俟灌氣完成後內部氣壓可作用在封閉斜面，而使束緊部更為緊密的抱緊活塞桿。 The inner and outer sides of the open end of the annular groove of the former oil seal body have protrusions formed on the inner and outer sides to form a lip seal point including at least three points, thereby generating an inner wall surface corresponding to the shaft center and the opposite The utility model has the advantages of stable three-point support positioning, and can effectively prevent the oil seal body from being affected by the oil pressure and the lack of the inclined eccentric oil leakage, and the filler of the elastic material is filled in the ring groove of the oil seal body to enhance the resistance. The anti-compression stress of the axial yaw on the oil pressure prevents the oil leakage caused by the yaw of the shaft itself, and several pieces are provided on the inner and outer sides of the opening end of the ring groove of the oil seal body. The gap of the hydraulic oil film is recirculated, so that the oil seal body can recover the oil film attached to the surface of the shaft through the gap; the latter gas leakage preventing ring has an outer ring which is matched with the cylinder tube outside the gas pressure rod. Wall, and one can tighten The inner ring wall of the piston rod of the pressure rod protrudes from the outer ring wall to abut against the leakage preventing flange of the inner wall surface of the outer cylinder tube, and protrudes from the inner ring wall to tighten the tightening portion of the piston rod to the bundle The tight portion is a boundary formed on the inner ring wall to form a closed inclined surface facing the inner side of the gas pressure bar, and an air intake inclined surface facing the outer side of the gas pressure bar. When the gas pressure bar is in the right gas, the gas can enter the gas pressure bar through the air intake inclined surface. After the completion of the gas filling, the internal air pressure can act on the closed slope, and the tightening portion tightly holds the piston rod tightly.
惟，前者彈性材質之填充件其支撐效果有限，容易因往復位移作動產生變型，影響密封效果；後者防漏環設有溝槽嵌設金屬墊片，然而防漏環於溝槽兩側之接觸面積減少而無法承受高壓，且經活塞桿位移後，金屬墊片容易脫出溝槽而失去密封效果，使得二容室間之氣體或油體經由縫隙進入另一容室中，造成二容室間之氣體或油體產生汙染，而影響壓力缸之作動，整體結構確有待改良之必要者。 However, the filling material of the former elastic material has limited support effect, and is easily deformed by the reciprocating displacement to affect the sealing effect; the latter leakage preventing ring is provided with a groove-embedded metal gasket, but the leakage preventing ring is in contact with both sides of the groove. The area is reduced and cannot withstand high pressure, and after displacement by the piston rod, the metal gasket easily escapes from the groove and loses the sealing effect, so that the gas or oil body between the two chambers enters the other chamber through the gap, resulting in a two-chamber chamber. The gas or oil body between the two produces pollution, which affects the operation of the pressure cylinder, and the overall structure does need to be improved.
本發明所揭露壓力缸之活塞結構，包含有：一壓力缸；一作動桿，其一端穿設於該壓力缸內並組設有一閥座；一活塞，呈中空圓柱狀且具有一軸孔，該活塞為塑性材質之應用，該活塞內、外壁分別形成有一內環面及一外環面，於該活塞內部一體包覆有環狀之一強化件，該強化件為金屬材質之應用，該活塞藉軸孔套設於作動桿上，且該活塞之內、外環面分別抵貼於作動桿外壁面及壓力缸內壁面；藉由上述構件，利用較硬材質之強化件之設置所形成該活塞，受壓時，較軟材質之活塞可適度變形而更具密封性，且藉活塞內部有較硬材質之該強化件以提供支撐，有 效提升密封效果及結構強度，其製造成本低，組裝容易，密封性佳且耐用，以達極佳創新實用性及成本效益者。 The piston structure of the pressure cylinder disclosed in the present invention comprises: a pressure cylinder; an actuating rod, one end of which is disposed in the pressure cylinder and is provided with a valve seat; a piston having a hollow cylindrical shape and having a shaft hole, The piston is a plastic material. The inner and outer walls of the piston are respectively formed with an inner annular surface and an outer annular surface. The inner part of the piston is integrally covered with an annular one-piece reinforcing member, and the reinforcing member is a metal material application. The shaft hole is sleeved on the actuating rod, and the inner and outer annular surfaces of the piston are respectively abutted against the outer wall surface of the actuating rod and the inner wall surface of the pressure cylinder; and the above member is formed by the setting of the reinforcing member of the hard material Piston, when pressed, the piston of the softer material can be deformed moderately and more tightly, and the reinforcement is provided by the harder material inside the piston to provide support. Effectively improve the sealing effect and structural strength, its manufacturing cost is low, assembly is easy, sealing is good and durable, to achieve excellent innovation and cost-effectiveness.
本發明所提供壓力缸之活塞結構，係利用塑性材質包覆金屬材質之強化件，並一體成型出該活塞，受壓時，較軟材質之該活塞可適度變形而更具密封性，且藉該活塞內部有較硬材質之該強化件以提供支撐，有效提升密封效果及結構強度，其製造成本低，組裝容易，密封性佳且耐用，以達極佳創新實用性及成本效益者；再者，該活塞各該內、外環面形成有環狀之凸緣，當該活塞受壓變形時，各該凸緣與作動桿外壁面及壓力缸內壁面間分別形成環狀之單點接觸，提供單點密封之效果，且可提升該活塞滑動之順暢性；該活塞之內、外環面可分別設有複數環槽，各該環槽於各該內、外環面形成有環狀之複數凸緣，當該活塞受壓變形時，各該內、外環面之複數凸緣與作動桿外壁面及壓力缸內壁面間分別形成環狀之多點接觸，提供多點密封之效果，提升該活塞滑動之順暢性，且可增進密封性；該活塞各該內、外環面分別設有環槽，且於該活塞軸向二端面分別設有環槽，則各該環槽於內環面端部形成有環狀之二凸緣，各該環槽於外環面端部形成有環狀之二凸緣，可提升該活塞滑動之順暢性，當該活塞受壓時，可具有較大之撓性變形，且藉該強化件之設置，提供極佳撓性密封之功效者。 The piston structure of the pressure cylinder provided by the invention is made of a plastic material coated with a metal material reinforcement member, and the piston is integrally formed. When the pressure is applied, the piston of the soft material can be moderately deformed and more sealed, and borrowed. The inside of the piston has a stiffer material to provide support, which effectively improves the sealing effect and structural strength, and has low manufacturing cost, easy assembly, good sealing performance and durability, so as to achieve excellent innovation and cost-effectiveness; Each of the inner and outer annular faces of the piston is formed with an annular flange. When the piston is compressed and deformed, each of the flanges forms a ring-shaped single point contact with the outer wall surface of the actuating rod and the inner wall surface of the pressure cylinder. Providing a single point sealing effect, and improving the smoothness of sliding of the piston; the inner and outer annular surfaces of the piston may respectively be provided with a plurality of ring grooves, each of which forms a ring shape on each of the inner and outer ring faces The plurality of flanges, when the piston is deformed by pressure, the plurality of flanges of the inner and outer annular surfaces form an annular multi-point contact with the outer wall surface of the actuating rod and the inner wall surface of the pressure cylinder, thereby providing a multi-point sealing effect. Lift the piston The smoothness of the movement and the improvement of the sealing property; the inner and outer annular faces of the piston are respectively provided with ring grooves, and the ring grooves are respectively arranged on the axial end faces of the pistons, and the ring grooves are respectively at the inner ring end faces The annular portion is formed with two flanges, and each of the annular grooves is formed with an annular two-flange at the end of the outer annular surface to improve the smoothness of the sliding of the piston. When the piston is pressed, it can have a larger Flexible deformation, and by the arrangement of the reinforcement, provides the effect of an excellent flexible seal.
10‧‧‧壓力缸 10‧‧‧pressure cylinder
20‧‧‧作動桿 20‧‧‧Action rod
21‧‧‧閥座 21‧‧‧ valve seat
30‧‧‧活塞 30‧‧‧Piston
31‧‧‧軸孔 31‧‧‧ shaft hole
32‧‧‧內環面 32‧‧‧ Inner torus
321‧‧‧凸緣 321‧‧‧Flange
322‧‧‧環槽 322‧‧‧ Ring groove
323‧‧‧凸緣 323‧‧‧Flange
33‧‧‧外環面 33‧‧‧ outer annulus
331‧‧‧凸緣 331‧‧‧Flange
332‧‧‧環槽 332‧‧‧ Ring groove
333‧‧‧凸緣 333‧‧‧Flange
34‧‧‧第一容室 34‧‧‧First room
35‧‧‧第二容室 35‧‧‧Second room
36‧‧‧第三容室 36‧‧‧ third room
40‧‧‧強化件 40‧‧‧Reinforcement
50‧‧‧活塞 50‧‧‧Piston
51‧‧‧軸孔 51‧‧‧Axis hole
52‧‧‧內環面 52‧‧‧ Inner torus
521‧‧‧環槽 521‧‧‧ Ring groove
53‧‧‧外環面 53‧‧‧ outer annulus
531‧‧‧環槽 531‧‧‧ Ring groove
54‧‧‧環槽 54‧‧‧ Ring groove
55‧‧‧凸緣 55‧‧‧Flange
56‧‧‧凸緣 56‧‧‧Flange
第一圖為本創作一較佳實施例之立體外觀局部剖視圖。 The first figure is a partial cross-sectional view of a three-dimensional appearance of a preferred embodiment of the present invention.
第二圖為本創作一較佳實施例之立體分解圖。 The second figure is an exploded perspective view of a preferred embodiment of the present invention.
第三圖為本創作一較佳實施例之組合剖視圖。 The third figure is a combined cross-sectional view of a preferred embodiment of the present invention.
第四圖為本創作第二實施例之立體外觀局部剖視圖。 The fourth figure is a partial cross-sectional view of the stereoscopic appearance of the second embodiment of the creation.
第五圖為本創作第二實施例之立體分解圖。 The fifth figure is an exploded perspective view of the second embodiment of the creation.
第六圖為本創作第二實施例之組合剖視圖。 The sixth drawing is a combined sectional view of the second embodiment of the creation.
第七圖為本創作第三實施例之立體外觀局部剖視圖。 Figure 7 is a partial cross-sectional view showing the three-dimensional appearance of the third embodiment of the present invention.
第八圖為本創作第三實施例之立體分解圖。 The eighth figure is an exploded perspective view of the third embodiment of the creation.
第九圖為本創作第三實施例之組合剖視圖。 The ninth drawing is a sectional view of the combination of the third embodiment of the creation.
第十圖為本創作第四實施例之立體外觀局部剖視圖。 Figure 11 is a partial cross-sectional view showing the three-dimensional appearance of the fourth embodiment of the present invention.
第十一圖為本創作第四實施例之立體分解圖。 The eleventh drawing is an exploded perspective view of the fourth embodiment of the creation.
第十二圖為本創作第四實施例之組合剖視圖。 Fig. 12 is a sectional view showing the combination of the fourth embodiment of the creation.
第十三圖為本創作第四實施例活塞之變形示意圖。 The thirteenth drawing is a schematic view showing the deformation of the piston of the fourth embodiment of the present invention.
首先請參照第一圖至第三圖，本發明所提供之一種壓力缸之活塞結構，其包含有：一壓力缸10、一作動桿20、以及一活塞30。 First, referring to the first to third figures, the piston structure of the pressure cylinder provided by the present invention comprises: a pressure cylinder 10, an actuating rod 20, and a piston 30.
該作動桿20，其一端穿設於該壓力缸10內並組設有一閥座21。 The actuating rod 20 has one end that is disposed in the pressure cylinder 10 and is provided with a valve seat 21 .
該活塞30，呈中空圓柱狀且具有一軸孔31，該活塞30為可適度變形之塑性材質之應用，該活塞30內、外壁分別形成有一內環面32及一外環面33；於該活塞30內部一體包覆有環狀之一強化件40，該強化件40為金屬材質之應用；該活塞30藉軸孔31套設於作動桿20上，且該活塞30之內、外環面32、33分別抵貼於作動桿20外壁面及壓力缸10內壁面，藉該活塞30於壓力缸10內部區隔出一第一容室34及一第二容室35，且該活塞30可於壓力缸10內滑動，各該第一、第二容室34、35中可容設有氣體、油體或彈性體，或可分別容設有氣體與油體而成氣油壓複合式之容室，或可分別容設有氣體或油體與彈性體而成之複合式容室；並於該閥座21與壓力缸10間形成有一第三容室36，該第三容室36中可容設有氣體、油體或彈性體。 The piston 30 has a hollow cylindrical shape and has a shaft hole 31. The piston 30 is a plastic material which can be appropriately deformed. The inner and outer walls of the piston 30 are respectively formed with an inner annular surface 32 and an outer annular surface 33. The inner part is integrally covered with an annular one-piece reinforcing member 40, and the reinforcing member 40 is applied to a metal material; the piston 30 is sleeved on the actuating rod 20 by the shaft hole 31, and the inner and outer annular surfaces 32 of the piston 30 are And the 33 is respectively abutted against the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, and the first chamber 34 and the second chamber 35 are separated from the inner portion of the cylinder 10 by the piston 30, and the piston 30 can be The pressure cylinder 10 slides, and each of the first and second chambers 34, 35 can accommodate a gas, an oil body or an elastomer, or can respectively contain a gas and an oil body to form a gas-oil pressure composite capacity. a chamber, or a composite chamber formed by a gas or an oil body and an elastomer; and a third chamber 36 formed between the valve seat 21 and the pressure cylinder 10, wherein the third chamber 36 can be Contains gas, oil or elastomer.
藉由上述構件，該活塞30一體包覆有金屬材質之強化件40，利用較硬材質之強化件40之設置所形成該活塞30，受壓時，較軟材質之該活塞30可適度變形而更具密封性， 且藉該活塞30內部有較硬材質之該強化件40以提供支撐，有效提升密封效果及結構強度，其製造成本低，組裝容易，密封性佳且耐用，以達極佳創新實用性及成本效益者。 With the above-mentioned members, the piston 30 is integrally covered with a metal-reinforced member 40, and the piston 30 is formed by the arrangement of the stiffener 40. When pressed, the piston 30 of the softer material can be appropriately deformed. More sealed, The reinforcing member 40 of the hard material is provided inside the piston 30 to provide support, thereby effectively improving the sealing effect and structural strength, and has low manufacturing cost, easy assembly, good sealing performance and durability, so as to achieve excellent innovation and cost. Benefits.
為供進一步瞭解本發明構造特徵、運用技術手段及所預期達成之功效，茲將本發明之組設及使用方式加以敘述如下： For a further understanding of the structural features of the present invention, the use of technical means, and the desired effects achieved, the manner in which the present invention is assembled and used is described as follows:
本發明之組設，係利用塑性材料包覆該強化件40且一體成形出該活塞30，接著將該活塞30軸孔31與作動桿20相互套設，再接著將該作動桿20及活塞30穿設於壓力缸10內，且該活塞30內、外環面32、33分別抵貼於作動桿20外壁面及壓力缸10內壁面，即組設完畢。 In the assembly of the present invention, the reinforcing member 40 is covered with a plastic material and the piston 30 is integrally formed, and then the shaft hole 31 of the piston 30 and the actuating rod 20 are sleeved with each other, and then the actuating rod 20 and the piston 30 are further The inner and outer annular surfaces 32 and 33 of the piston 30 are respectively abutted against the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, that is, the assembly is completed.
本發明之使用方式，當該作動桿20位移時，該活塞30可於壓力缸10內滑動，以改變各該第一、第二容室34、35包圍之容積，或傳遞各該第一、第二容室34、35內氣體或由體所施加之壓力。 In the manner of use of the present invention, when the actuating lever 20 is displaced, the piston 30 can slide in the pressure cylinder 10 to change the volume surrounded by the first and second chambers 34, 35, or to transmit the first, The gas in the second chambers 34, 35 or the pressure exerted by the body.
請參照第四至六圖所示，為本發明之第二實施例，其中該活塞30之內、外環面32、33可設為弧狀，而於各該內、外環面32、33形成有環狀之一凸緣321、331，各該凸緣321、331與作動桿20外壁面及壓力缸10內壁面間分別形成環狀之單點接觸，當該活塞30受壓變形時，提供單點密封之效果，且可提升該活塞30滑動之順暢性。 Referring to Figures 4-6, a second embodiment of the present invention, wherein the inner and outer annular faces 32, 33 of the piston 30 can be arcuate, and the inner and outer annular faces 32, 33 One of the annular flanges 321 and 331 is formed, and each of the flanges 321 and 331 forms an annular single-point contact with the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, and when the piston 30 is deformed by pressure, The effect of a single point seal is provided, and the smoothness of sliding of the piston 30 can be improved.
請參照第七至九圖所示，為本發明之第三實施例，其中該活塞30之內、外環面32、33可分別設有至少一環槽 322、332，於本實施例中，各該內、外環面32、33分別設有複數環槽322、332，則各該環槽322、332於各該內、外環面32、33形成有環狀之複數凸緣323、333，各該內、外環面32、33之複數凸緣323、333分別抵貼於作動桿20外壁面及壓力缸10內壁面，當該活塞30受壓變形時，各該內、外環面32、33之複數凸緣323、333與作動桿20外壁面及壓力缸10內壁面間分別形成環狀之多點接觸，提供多點密封之效果，可分散其與作動桿20外壁面及壓力缸10內壁面間之摩擦力，提升該活塞30滑動之順暢性，且可增進密封性。 Referring to the seventh embodiment, the third embodiment of the present invention, wherein the inner and outer annular faces 32, 33 of the piston 30 are respectively provided with at least one ring groove. 322, 332, in the embodiment, each of the inner and outer annular surfaces 32, 33 is respectively provided with a plurality of annular grooves 322, 332, and each of the annular grooves 322, 332 is formed on each of the inner and outer annular faces 32, 33. The plurality of flanges 323 and 333 having a ring shape, and the plurality of flanges 323 and 333 of the inner and outer annular surfaces 32 and 33 respectively abut against the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, when the piston 30 is pressed During the deformation, the plurality of flanges 323 and 333 of the inner and outer annular surfaces 32 and 33 form an annular multi-point contact with the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, thereby providing a multi-point sealing effect. The frictional force between the outer wall surface of the actuating lever 20 and the inner wall surface of the pressure cylinder 10 is dispersed to improve the smoothness of sliding of the piston 30, and the sealing property can be improved.
請參照第十至十三圖所示，為本發明之第四實施例，該活塞50同樣呈中空圓柱狀且具有一軸孔51，該活塞50內、外壁分別形成有一內環面52及一外環面53；於該活塞50內部同樣一體包覆有環狀之強化件40，其中該活塞50各該內、外環面52、53分別設有一環槽521、531，且於該活塞50軸向二端面分別設有一環槽54，則各該環槽521、54於內環面52端部形成有環狀之二凸緣55，各該環槽531、54於外環面53端部形成有環狀之二凸緣56，使得各該內、外環面52、53分別有設有環狀之二凸緣55、56抵貼於作動桿20外壁面及壓力缸10內壁面間，可提升該活塞50滑動之順暢性，當該活塞50受壓時，可具有較大之撓性變形，且藉該強化件40之設置，提供極佳撓性密封之功效者。 Referring to the tenth to thirteenth drawings, in the fourth embodiment of the present invention, the piston 50 is also hollow cylindrical and has a shaft hole 51. The inner and outer walls of the piston 50 are respectively formed with an inner annular surface 52 and an outer portion. The annular surface 53 is also integrally covered with an annular reinforcing member 40. The inner and outer annular surfaces 52 and 53 of the piston 50 are respectively provided with a ring groove 521, 531, and the piston 50 shaft A ring groove 54 is formed in each of the two end faces, and each of the ring grooves 521 and 54 is formed with an annular flange 55 at an end of the inner ring surface 52, and each of the ring grooves 531 and 54 is formed at an end of the outer ring surface 53. The annular flanges 56 are arranged such that the inner and outer annular surfaces 52 and 53 are respectively provided with annular flanges 55 and 56 abutting against the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10, The smoothness of sliding of the piston 50 is improved, and when the piston 50 is pressed, it can have a large flexural deformation, and by virtue of the arrangement of the reinforcing member 40, it provides an excellent function of a flexible seal.
本發明利用塑性材質包覆金屬材質之強化件40，並一體成型出該活塞30，受壓時，較軟材質之該活塞30可適度變形而更具密封性，且藉該活塞30內部有較硬材質之該強化件40以提供支撐，有效提升密封效果及結構強度，其製造成本低，組裝容易，密封性佳且耐用，以達極佳創新實用性及成本效益者；再者，該活塞30各該內、外環面32、33形成有環狀之凸緣321、331，當該活塞30受壓變形時，各該凸緣321、331與作動桿20外壁面及壓力缸10內壁面間分別形成環狀之單點接觸，提供單點密封之效果，且可提升該活塞30滑動之順暢性。 The invention utilizes a plastic material to cover the metal material reinforcement member 40, and integrally forms the piston 30. When the pressure is applied, the piston 30 of the soft material can be moderately deformed and more sealed, and the piston 30 has a relatively internal inside. The reinforcing member 40 of the hard material provides support, effectively improves the sealing effect and structural strength, and has low manufacturing cost, easy assembly, good sealing performance and durability, so as to achieve excellent innovation, practicability and cost effectiveness; Each of the inner and outer annular faces 32, 33 is formed with annular flanges 321 and 331. When the piston 30 is deformed by pressure, the flanges 321 and 331 and the outer wall surface of the actuating lever 20 and the inner wall surface of the cylinder 10 are pressed. A single point contact is formed between the rings to provide a single point sealing effect, and the smoothness of sliding of the piston 30 can be improved.
該活塞30之內、外環面32、33可分別設有複數環槽322、332，各該環槽322、332於各該內、外環面32、33形成有環狀之複數凸緣323、333，當該活塞30受壓變形時，各該內、外環面32、33之複數凸緣323、333與作動桿20外壁面及壓力缸10內壁面間分別形成環狀之多點接觸，提供多點密封之效果，提升該活塞30滑動之順暢性，且可增進密封性。 The inner and outer annular faces 32, 33 of the piston 30 can be respectively provided with a plurality of annular grooves 322, 332, and each of the annular grooves 322, 332 is formed with a plurality of annular flanges 323 at the inner and outer annular faces 32, 33. 333, when the piston 30 is deformed by compression, the plurality of flanges 323, 333 of the inner and outer annular surfaces 32, 33 and the outer wall surface of the actuating rod 20 and the inner wall surface of the pressure cylinder 10 respectively form a circular multi-point contact The utility model provides the effect of multi-point sealing, improves the smoothness of the sliding of the piston 30, and improves the sealing property.
該活塞50各該內、外環面52、53分別設有環槽521、531，且於該活塞50軸向二端面分別設有環槽54，則各該環槽521、54於內環面52端部形成有環狀之二凸緣55，各該環槽531、54於外環面53端部形成有環狀之二凸緣56，可提升該活塞50滑動之順暢性，當該活塞50 受壓時，可具有較大之撓性變形，且藉該強化件40之設置，提供極佳撓性密封之功效者。 The inner and outer annular surfaces 52 and 53 of the piston 50 are respectively provided with ring grooves 521 and 531, and annular grooves 54 are respectively formed on the axial end faces of the piston 50, and the ring grooves 521 and 54 are respectively formed on the inner ring surface. The end portion of the 52 is formed with a ring-shaped two flanges 55. Each of the ring grooves 531 and 54 is formed with an annular flange 56 at the end of the outer ring surface 53 to improve the smoothness of sliding of the piston 50. 50 When pressed, it can have a large flexural deformation, and by virtue of the arrangement of the reinforcing member 40, it provides an excellent effect of the flexible seal.
綜合上述，本發明所揭露之「壓力缸之活塞結構」，係提供一種包覆有金屬材質強化件40之活塞30，受壓時，較軟材質之該活塞30可適度變形而更具密封性，且藉該活塞30內部有較硬材質之該強化件40以提供支撐，有效提升密封效果及結構強度，其製造成本低，組裝容易，密封性佳且耐用，而獲致一實用性高及具成本效益之活塞結構，俾使整體確具產業實用性及創新效益，且其構成結構又未曾見於諸書刊或公開使用，誠符合發明專利申請要件，懇請 鈞局明鑑，早日准予專利，至為感禱。 In summary, the "piston structure of the pressure cylinder" disclosed in the present invention provides a piston 30 coated with a metal material reinforcement member 40. When pressed, the piston 30 of the soft material can be moderately deformed and more sealed. The reinforcing member 40 of the hard material is provided inside the piston 30 to provide support, thereby effectively improving the sealing effect and structural strength, and has low manufacturing cost, easy assembly, good sealing performance and durability, and is highly practical and has a high practicality. The cost-effective piston structure makes the whole industry practical and innovative, and its structure has not been seen in the publications or public use. It is in line with the requirements of the invention patent application, so please ask the bureau to grant the patent as soon as possible. prayer.
需陳明者，以上所述乃是本發明之具體實施例及所運用之技術原理，若依本發明之構想所作之改變，其所產生之功能作用仍未超出說明書及圖式所涵蓋之精神時，均應在本發明之範圍內，合予陳明。 It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.
10‧‧‧壓力缸 10‧‧‧pressure cylinder
20‧‧‧作動桿 20‧‧‧Action rod
21‧‧‧閥座 21‧‧‧ valve seat
30‧‧‧活塞 30‧‧‧Piston
32‧‧‧內環面 32‧‧‧ Inner torus
33‧‧‧外環面 33‧‧‧ outer annulus
34‧‧‧第一容室 34‧‧‧First room
35‧‧‧第二容室 35‧‧‧Second room
36‧‧‧第三容室 36‧‧‧ third room
40‧‧‧強化件 40‧‧‧Reinforcement
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| TW104131057A TW201712256A (en) | 2015-09-21 | 2015-09-21 | Piston structure of pneumatic cylinder for effectively enhancing sealing effect and structural strength with low manufacturing cost and easy assembly |
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| TW201712256A true TW201712256A (en) | 2017-04-01 |
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| CN110864113A (en) * | 2019-12-01 | 2020-03-06 | 东北石油大学 | Elastic sealing element for reciprocating mobile equipment and sealing method thereof |
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| TWM406117U (en) * | 2010-12-14 | 2011-06-21 | Kind Shock Hi Tech Co Ltd | Piston structure of pressure cylinder |
| JP6190179B2 (en) * | 2013-06-21 | 2017-08-30 | 光洋シーリングテクノ株式会社 | Sealing device |
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