TWI836723B - Double-acting cylinder with retraction cushion function - Google Patents
Double-acting cylinder with retraction cushion function Download PDFInfo
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- TWI836723B TWI836723B TW111143484A TW111143484A TWI836723B TW I836723 B TWI836723 B TW I836723B TW 111143484 A TW111143484 A TW 111143484A TW 111143484 A TW111143484 A TW 111143484A TW I836723 B TWI836723 B TW I836723B
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- 239000012530 fluid Substances 0.000 claims abstract description 87
- 238000004891 communication Methods 0.000 claims description 41
- 230000003139 buffering effect Effects 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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Abstract
Description
本發明相關於一種雙動缸,特別是相關於一種具縮回緩衝之雙動缸。 The present invention relates to a double-acting cylinder, and in particular to a double-acting cylinder with retraction cushioning.
雙動缸(double-acting cylinder)是驅動流體交替作用於活塞兩側的缸體,藉由使驅動流體作用於活塞的其中一側,能夠使活塞伸出作動,藉由使驅動流體作用於活塞的另外一側,則能夠使活塞縮回作動。雙動缸主要應用在無法使用外力使活塞縮回作動的情況,以及也可應用在伸出及縮回的兩個作動方向皆需要有較高力量的情況。 A double-acting cylinder is a cylinder in which the driving fluid acts on both sides of the piston alternately. By causing the driving fluid to act on one side of the piston, the piston can be extended and actuated. By causing the driving fluid to act on the piston On the other side, the piston can be retracted. Double-acting cylinders are mainly used in situations where external force cannot be used to retract the piston, and can also be used in situations where higher force is required in both extending and retracting directions.
由於驅動流體的作用力大,造成活塞在縮回作動至終點時容易因慣性而有劇烈撞擊缸體後端的情況發生,嚴重時甚至可能有破損的問題,因此實有改善的必要。 Due to the large force of the driving fluid, the piston is prone to violently hit the rear end of the cylinder due to inertia when it retracts to the end. In serious cases, it may even be damaged, so there is a need for improvement.
因此,本發明的目的即在提供一種具縮回緩衝之雙動缸,以解決習知技術的問題。 Therefore, the purpose of the present invention is to provide a double-acting cylinder with retraction buffer to solve the problems of the prior art.
本發明為解決習知技術之問題所採用之技術手段係提供一種具縮回緩衝之雙動缸,包含:一缸體,具有一缸室、一前流體進出口、及一後流體進出口,該前流體進出口連通於該缸室之前側,該缸室之後端具有一縱向連通孔,該後流體進出口經由該縱向連通孔而連通至該缸室;以及一軸心,具有一活塞部及一緩衝部,該活塞部位於該軸心之一端,該軸心係以該活塞部之外徑面對應於該缸體之內徑面的方式縱向滑移地套設於該缸體之該缸室中,而由該活塞部將該缸室區分為一前缸室空間及一後缸室空間,該前缸室空間連通於該前流體進出口,該後缸室空間經由該縱向連通孔而連通於該後流體進出口,以藉由自該後流體進出口輸入一驅動流體至該缸室之該後缸室空間,使該活塞部受推動而帶動該軸心縱向向前伸出,且同時該缸室之該前缸室空間內的該驅動流體向該前流體進出口流出,以及藉由自該前流體進出口輸入該驅動流體至該缸室之該前缸室空間,使該活塞部受推動而帶動該軸心縱向向後縮回,且同時該缸室之該後缸室空間內的該驅動流體向該後流體進出口流出,該緩衝部係自該活塞部縱向向後彈性凸伸出且縱向對應於該缸室之該縱向連通孔,該緩衝部之後側面設有一間隙溝槽,其中該緩衝部係經設置而:在該軸心縱向向後縮回時,該緩衝部隨著該活塞部向後位移而對應地彈性抵靠於該縱向連通孔,並藉由彈性抵靠所致的彈性力使該緩衝部之後側面壓緊於該縱向連通孔之前側面,而以只留下在該緩衝部之該間隙溝槽與該縱向連通孔之前側面之間所夾出的一間隙流道的方式將該縱向連通孔封閉,該間隙流道之流道截面積小於該縱向連通孔之流道截面積,而使自該後缸室空間經由該縱向連通孔向該後流體進出口的該驅動流體的流出受限於該間隙流道而減小,從而減緩該軸心的縮回速度。 The present invention solves the problems of the prior art by providing a double-acting cylinder with a retraction buffer, comprising: a cylinder body having a cylinder chamber, a front fluid inlet and outlet, and a rear fluid inlet and outlet, the front fluid inlet and outlet being connected to the front side of the cylinder chamber, the rear end of the cylinder chamber having a longitudinal connecting hole, the rear fluid inlet and outlet being connected to the cylinder chamber through the longitudinal connecting hole; and an axis having a piston part and a buffer part, the piston part being located at one end of the axis, the axis being arranged in such a way that the outer diameter surface of the piston part corresponds to the inner diameter surface of the cylinder body. The piston is longitudinally slidably sleeved in the cylinder chamber of the cylinder body, and the cylinder chamber is divided into a front cylinder chamber space and a rear cylinder chamber space by the piston portion. The front cylinder chamber space is connected to the front fluid inlet and outlet, and the rear cylinder chamber space is connected to the rear fluid inlet and outlet via the longitudinal connecting hole, so that a driving fluid is input from the rear fluid inlet and outlet to the rear cylinder chamber space of the cylinder chamber, so that the piston portion is pushed to drive the axis to extend longitudinally forward, and at the same time, the driving fluid in the front cylinder chamber space of the cylinder chamber flows out to the front fluid inlet and outlet, and the driving fluid is input from the front fluid inlet and outlet to the rear cylinder chamber space of the cylinder chamber. The fluid inlet and outlet input the driving fluid into the front cylinder chamber space of the cylinder chamber, so that the piston part is pushed to drive the axis to retract longitudinally backward, and at the same time, the driving fluid in the rear cylinder chamber space of the cylinder chamber flows out to the rear fluid inlet and outlet, the buffer part elastically protrudes longitudinally backward from the piston part and longitudinally corresponds to the longitudinal through hole of the cylinder chamber, and the rear side surface of the buffer part is provided with a gap groove, wherein the buffer part is arranged: when the axis retracts longitudinally backward, the buffer part elastically abuts against the longitudinal through hole correspondingly with the backward displacement of the piston part The rear side of the buffer portion is pressed against the front side of the longitudinal connecting hole by the elastic force caused by the elastic abutment, and the longitudinal connecting hole is closed by leaving only a gap flow channel sandwiched between the gap groove of the buffer portion and the front side of the longitudinal connecting hole. The flow channel cross-sectional area of the gap flow channel is smaller than the flow channel cross-sectional area of the longitudinal connecting hole, so that the outflow of the driving fluid from the rear cylinder chamber space through the longitudinal connecting hole to the rear fluid inlet and outlet is limited by the gap flow channel and reduced, thereby slowing down the retraction speed of the axis.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該緩衝部包括一抵靠塊及一彈性件,該抵靠塊縱向對應於該縱向連通孔,該間隙溝槽係形成在該抵靠塊之後側面,該彈性件彈性連接在該抵靠塊與該活塞部之間,以在該活塞部向後位移時,使該抵靠塊對應地彈性抵靠於該縱向連通孔。 In one embodiment of the present invention, a double-acting cylinder with a retraction buffer is provided, wherein the buffer portion includes a support block and an elastic member, the support block longitudinally corresponds to the longitudinal through hole, the gap groove is formed on the rear side of the support block, and the elastic member is elastically connected between the support block and the piston portion, so that when the piston portion moves backward, the support block elastically abuts against the longitudinal through hole in a corresponding manner.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該間隙溝槽係為自該抵靠塊之後側面的一周緣位置橫向向內延伸至該抵靠塊之後側面的一內側位置,該周緣位置所在之半徑距離係大於該縱向連通孔之半徑尺寸,該內側位置所在之半徑距離係小於該縱向連通孔之半徑尺寸,以在該抵靠塊對應地彈性抵靠於該縱向連通孔時,該間隙流道於該周緣位置橫向連通於該後缸室空間以及於該內側位置連通於該縱向連通孔。 In one embodiment of the present invention, a double-acting cylinder with retraction buffer is provided, wherein the gap groove extends transversely inward from a peripheral position of the rear side surface of the abutment block to an inner position of the rear side surface of the abutment block, the radius of the peripheral position is greater than the radius of the longitudinal connecting hole, and the radius of the inner position is less than the radius of the longitudinal connecting hole, so that when the abutment block elastically abuts against the longitudinal connecting hole, the gap flow channel is transversely connected to the rear cylinder chamber space at the peripheral position and connected to the longitudinal connecting hole at the inner position.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該活塞部之後側面形成有一內縮槽,用於對應地容置該抵靠塊,以允許該活塞部向後位移至該活塞部之後側面抵靠該縱向連通孔之前側面的位置。 In one embodiment of the present invention, a double-acting cylinder with retraction buffer is provided, wherein a retraction groove is formed on the rear side of the piston portion for correspondingly accommodating the abutment block to allow the piston portion to move backward to a position where the rear side of the piston portion abuts against the front side of the longitudinal through hole.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該緩衝部更包括一導引桿,縱向對應於該縱向連通孔而自該活塞部縱向向後延伸,該抵靠塊滑移設置在該導引桿上,以藉由該導引桿確保該抵靠塊的縱向滑移,其中在該軸心縱向向後縮回時,該導引桿係隨著該活塞部的向後位移而以該導引桿與該缸室之間不抵靠的方式而對應地位移進入該縱向連通孔中。 In one embodiment of the present invention, a double-acting cylinder with a retraction buffer is provided, wherein the buffer portion further includes a guide rod, which longitudinally corresponds to the longitudinal connecting hole and extends longitudinally backward from the piston portion, and the abutment block is slidably arranged on the guide rod to ensure the longitudinal sliding of the abutment block by the guide rod, wherein when the axis retracts longitudinally backward, the guide rod is displaced into the longitudinal connecting hole in a corresponding manner with the backward displacement of the piston portion in a manner that the guide rod and the cylinder chamber do not abut against each other.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該彈性件為一壓縮彈簧,套設在該導引桿上而彈性連接在該抵靠塊與該活塞部之間。 In one embodiment of the present invention, a double-acting cylinder with retraction buffer is provided, wherein the elastic member is a compression spring, which is sleeved on the guide rod and elastically connected between the abutment block and the piston portion.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該緩衝部更包括一導引件,縱向對應於該縱向連通孔而自該緩衝部之後側面進一步 向後凸伸出,該導引件具有半徑由前往後漸縮的一錐面形狀,其中在該軸心縱向向後縮回時,該導引件係隨著該緩衝部而向後位移進入該縱向連通孔,並且藉由該錐面形狀而導引該緩衝部對應地彈性抵靠於該縱向連通孔。 In one embodiment of the present invention, a double-acting cylinder with retraction buffering is provided, wherein the buffering part further includes a guide member, longitudinally corresponding to the longitudinal communication hole and further from the rear side of the buffering part. Projecting backward, the guide member has a tapered shape with a radius tapering from front to back, wherein when the axis is retracted longitudinally backward, the guide member is displaced rearwardly into the longitudinal communication along with the buffer portion. hole, and the tapered shape guides the buffer portion to correspondingly elastically abut against the longitudinal communication hole.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該抵靠塊為一緩衝墊體。 In one embodiment of the present invention, a double-acting cylinder with retraction buffer is provided, wherein the abutment block is a buffer pad body.
在本發明的一實施例中係提供一種具縮回緩衝之雙動缸,其中該前流體進出口係穿過該缸體之外周壁而橫向連通至該前缸室空間。 In one embodiment of the present invention, a double-acting cylinder with retraction buffer is provided, wherein the front fluid inlet and outlet passes through the outer peripheral wall of the cylinder and is laterally connected to the front cylinder chamber space.
經由本發明所採用之技術手段,本發明的具縮回緩衝之雙動缸能夠在軸心縱向向後縮回時,藉由以緩衝部將缸體後端的縱向連通孔封閉至只留下間隙流道的方式,使經由縱向連通孔的驅動流體的流出受限而減少,從而減緩軸心的縮回速度,以解決習知技術的問題。並且,藉由本發明的具縮回緩衝之雙動缸,能夠在無須對驅動流體進行精確的外部流量控制的情況下,有效地提供縮回緩衝的作用,從而更方便於應用在各種機構中。 Through the technical means adopted by the present invention, the double-acting cylinder with retraction buffer of the present invention can, when the axis retracts longitudinally backward, use the buffer part to seal the longitudinal connecting hole at the rear end of the cylinder body until only the gap flow channel is left, so that the outflow of the driving fluid through the longitudinal connecting hole is restricted and reduced, thereby reducing the retraction speed of the buffer axis to solve the problem of the prior art. In addition, the double-acting cylinder with retraction buffer of the present invention can effectively provide the retraction buffer function without the need for precise external flow control of the driving fluid, so that it is more convenient to be applied in various mechanisms.
100:具縮回緩衝之雙動缸 100:Double-acting cylinder with retraction buffer
1:缸體 1: Cylinder body
10:缸室 10:Cylinder room
101:前缸室空間 101: Front cylinder room space
102:後缸室空間 102: Rear cylinder room space
11:前流體進出口 11: Front fluid inlet and outlet
12:後流體進出口 12:Rear fluid inlet and outlet
121:縱向連通孔 121: Longitudinal communicating hole
2:軸心 2: Axis
3:活塞部 3: Piston part
31:內縮槽 31: Retraction groove
4:緩衝部 4: Buffer section
41:抵靠塊 41: against block
411:間隙溝槽 411: Gap groove
42:彈性件 42: Elastic parts
43:導引桿 43:Guide rod
44:導引件 44: Guide parts
C:間隙流道 C: Gap channel
Rh:半徑尺寸 Rh: Radius size
Ri:半徑距離 Ri: Radius distance
Ro:半徑距離 Ro: Radius distance
〔第1圖〕為顯示根據本發明的一實施例的具縮回緩衝之雙動缸的立體示意圖;〔第2圖〕為顯示根據本發明的實施例的具縮回緩衝之雙動缸於伸出時的剖視示意圖;〔第3圖〕為顯示根據本發明的實施例的具縮回緩衝之雙動缸於縮回時的剖視示意圖; 〔第4圖〕為顯示根據本發明的實施例的具縮回緩衝之雙動缸於縮回時的剖視示意圖;〔第5圖〕為顯示根據本發明的實施例的具縮回緩衝之雙動缸於縮回時的剖視示意圖。 [Figure 1] is a three-dimensional schematic diagram showing a double-acting cylinder with retraction cushioning according to an embodiment of the present invention; [Figure 2] is a cross-sectional schematic diagram showing the double-acting cylinder with retraction cushioning according to an embodiment of the present invention when extended; [Figure 3] is a cross-sectional schematic diagram showing the double-acting cylinder with retraction cushioning according to an embodiment of the present invention when retracted; [Figure 4] is a cross-sectional schematic diagram showing the double-acting cylinder with retraction cushioning according to an embodiment of the present invention when retracted; [Figure 5] is a cross-sectional schematic diagram showing the double-acting cylinder with retraction cushioning according to an embodiment of the present invention when retracted.
以下根據第1圖至第5圖,而說明本發明的實施方式。該說明並非為限制本發明的實施方式,而為本發明之實施例的一種。 The following describes the implementation of the present invention based on Figures 1 to 5. The description is not intended to limit the implementation of the present invention, but is an example of the implementation of the present invention.
如第1圖至第5圖所示,依據本發明的一實施例的一具縮回緩衝之雙動缸100包含:一缸體1及一軸心2。
As shown in Figures 1 to 5, a double-acting
如第1圖至第5圖所示,該缸體1具有一缸室10、一前流體進出口11、及一後流體進出口12,該前流體進出口11連通於該缸室10之前側,該缸室10之後端具有一縱向連通孔121,該後流體進出口12經由該縱向連通孔121而連通至該缸室10。
As shown in Figures 1 to 5, the
如第1圖至第5圖所示,該軸心2具有一活塞部3及一緩衝部4,該活塞部3位於該軸心2之一端,該軸心2係以該活塞部3之外徑面對應於該缸體1之內徑面的方式縱向滑移地套設於該缸體1之該缸室10中,而由該活塞部3將該缸室10區分為一前缸室空間101及一後缸室空間102,該前缸室空間101連通於該前流體進出口11,該後缸室空間102經由該縱向連通孔121而連通於該後流體進出口12,以藉由自該後流體進出口12輸入一驅動流體至該缸室10之該後缸室空間102,使該活塞部3受推動而帶動該軸心2縱向向前伸出,且同時該缸室10之該前缸室空間101內的該驅動流體向該前流體進出口11流出,以及藉由自該前流體進
出口11輸入該驅動流體至該缸室10之該前缸室空間101,使該活塞部3受推動而帶動該軸心2縱向向後縮回,且同時該缸室10之該後缸室空間102內的該驅動流體向該後流體進出口12流出。
As shown in Figures 1 to 5, the
如第2圖至第5圖所示,該緩衝部4係自該活塞部3縱向向後彈性凸伸出且縱向對應於該缸室10之該縱向連通孔121,該緩衝部4之後側面設有一間隙溝槽411,其中該緩衝部4係經設置而:在該軸心2縱向向後縮回時,該緩衝部4隨著該活塞部3向後位移而對應地彈性抵靠於該縱向連通孔121(如第3圖所示),並藉由彈性抵靠所致的彈性力使該緩衝部4之後側面壓緊於該縱向連通孔121之前側面(如第4圖所示),而以只留下在該緩衝部4之該間隙溝槽411與該縱向連通孔121之前側面之間所夾出的一間隙流道C的方式將該縱向連通孔121封閉,該間隙流道C之流道截面積小於該縱向連通孔121之流道截面積,而使自該後缸室空間102經由該縱向連通孔121向該後流體進出口12的該驅動流體的流出受限於該間隙流道C而減小,從而減緩該軸心2的縮回速度。
As shown in FIGS. 2 to 5, the
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該緩衝部4包括一抵靠塊41及一彈性件42,該抵靠塊41縱向對應於該縱向連通孔121,該間隙溝槽411係形成在該抵靠塊41之後側面,該彈性件42彈性連接在該抵靠塊41與該活塞部3之間,以在該活塞部3向後位移時,使該抵靠塊41對應地彈性抵靠於該縱向連通孔121。
As shown in Figures 2 to 5, a double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該間隙溝槽411係為自該抵靠塊41之後側面的一周緣位置橫向向內延伸至該抵靠塊41之後側面的一內側位置,該周緣位置所在之半徑距離Ro係大於該縱向連通孔121之半徑尺寸Rh,該內側位置所在之半徑距離Ri係小於該縱向
連通孔121之半徑尺寸Rh,以在該抵靠塊41對應地彈性抵靠於該縱向連通孔121時,該間隙流道C於該周緣位置橫向連通於該後缸室空間102以及於該內側位置連通於該縱向連通孔121。
As shown in FIGS. 2 to 5, in a double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該活塞部3之後側面形成有一內縮槽31,用於對應地容置該抵靠塊41,以允許該活塞部3向後位移至該活塞部3之後側面抵靠該縱向連通孔121之前側面的位置(如第5圖所示)。
As shown in Figures 2 to 5, according to an embodiment of the double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該緩衝部4更包括一導引桿43,縱向對應於該縱向連通孔121而自該活塞部3縱向向後延伸,該抵靠塊41滑移設置在該導引桿43上,以藉由該導引桿43確保該抵靠塊41的縱向滑移,其中在該軸心2縱向向後縮回時,該導引桿43係隨著該活塞部3的向後位移而以該導引桿43與該缸室10之間不抵靠的方式而對應地位移進入該縱向連通孔121中(如第3圖、第4圖、第5圖所示)。
As shown in FIGS. 2 to 5, according to an embodiment of the present invention, a double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該彈性件42為一壓縮彈簧,套設在該導引桿43上而彈性連接在該抵靠塊41與該活塞部3之間。
As shown in Figures 2 to 5, according to an embodiment of the double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該緩衝部4更包括一導引件44,縱向對應於該縱向連通孔121而自該緩衝部4之後側面進一步向後凸伸出,該導引件44具有半徑由前往後漸縮的一錐面形狀,其中在該軸心2縱向向後縮回時,該導引件44係隨著該緩衝部4而向後位移進入該縱向連通孔121,並且藉由該錐面形狀而導引該緩衝部4對應地彈性抵靠於該縱向連通孔121。
As shown in FIGS. 2 to 5 , according to an embodiment of the double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該抵靠塊41為一緩衝墊體。具體而言,緩衝墊體係指以緩衝材料製成的墊體,藉此以吸收、減緩該抵靠塊41抵靠於該縱向連通孔121時的撞擊力道,並且可幫助使該抵靠塊41之後側面與該縱向連通孔121之前側面更緊密地貼合,以減少縫隙的產生。
As shown in Figures 2 to 5, in a double-acting
如第2圖至第5圖所示,依據本發明的一實施例的具縮回緩衝之雙動缸100,其中該前流體進出口11係穿過該缸體1之外周壁而橫向連通至該前缸室空間101。當然,本發明並不以此為限,在其它實施方式中,該前流體進出口11亦可用其它方式連通至該前缸室空間101。例如,該前流體進出口11可穿過該缸體1之端壁而縱向連通至該前缸室空間101。
As shown in Figures 2 to 5, according to an embodiment of the present invention, the double-acting
接下來,將參考第2圖至第5圖,對本發明的一實施例的具縮回緩衝之雙動缸100的作動方式作一說明如下。
Next, referring to Figures 2 to 5, the actuation of the double-acting
如第2圖所示並配合第3圖至第5圖所示,在自該後流體進出口12輸入該驅動流體時,該驅動流體經由該縱向連通孔121而流入該缸室10之該後缸室空間102,使該活塞部3受到來自該後缸室空間102內的該驅動流體的推動而向前位移。同時,該前缸室空間101內的該驅動流體受到該活塞部3的推擠,而向該前流體進出口11流出。從而,該活塞部3帶動該軸心2一同縱向向前伸出。
As shown in Figure 2 and shown in Figures 3 to 5, when the driving fluid is input from the rear fluid inlet and
如第3圖所示,在自該前流體進出口11輸入該驅動流體時,該驅動流體流入該缸室10之該前缸室空間101,使該活塞部3受到來自該前缸室空間101內的該驅動流體的推動而向後位移。同時,該後缸室空間102內的該驅動流體受到該活塞部3的推擠,而經由該縱向連通孔121向該後流體進出口12流出。從而,該活塞部3帶動該軸心2一同縱向後縮回。
As shown in Figure 3, when the driving fluid is input from the front fluid inlet and
如第3圖所示並配合第2圖、第4圖及第5圖所示,在該軸心2縱向向後縮回而位移到與該縱向連通孔121相接觸的位置時,該緩衝部4會對應地抵靠於該縱向連通孔121,而藉此將該縱向連通孔121之前側面封閉。並且,因為該緩衝部4之後側面設有該間隙溝槽411,所以該縱向連通孔121並不會被完全封閉,而會留下在該緩衝部4之該間隙溝槽411與該縱向連通孔121之前側面之間所夾出的該間隙流道C,使該後缸室空間102只能經由該間隙流道C而連通於該後流體進出口12。
As shown in Figure 3 and combined with Figures 2, 4 and 5, when the
如第4圖及第5圖所示並配合第2圖及第3圖所示,在該後流體進出口12與該後缸室空間102之間的連通從原先的該縱向連通孔121的大的流道截面積縮減至該間隙流道C的小的流道截面積之後,該後缸室空間102內的該驅動流體向該後流體進出口12的流出會因流道截面積的縮減而減小。在此情況下,該活塞部3向後位移的速度也會隨著該後缸室空間102內的該驅動流體的流出減小而對應趨緩,從而使該軸心2的縮回速度減緩,達到縮回緩衝的作用。
As shown in Figures 4 and 5 and in conjunction with Figures 2 and 3, the communication between the rear fluid inlet and
藉由上述結構,本發明的具縮回緩衝之雙動缸100能夠在該軸心2縱向向後縮回時,藉由以該緩衝部4將該缸體1後端的該縱向連通孔121封閉至只留下該間隙流道C的方式,使經由該縱向連通孔121的該驅動流體的流出受限而減少,從而減緩該軸心2的縮回速度,以解決習知技術的問題。並且,藉由本發明的具縮回緩衝之雙動缸100,能夠在無須對該驅動流體進行精確的外部流量控制的情況下,有效地提供縮回緩衝的作用,從而更方便於應用在各種機構中。
With the above structure, the double-acting
以上之敘述以及說明僅為本發明之較佳實施例之說明,對於此項技術具有通常知識者當可依據以下所界定申請專利範圍以及上述之說明而作其他之修改,惟此些修改仍應是為本發明之發明精神而在本發明之權利範圍中。 The above descriptions and explanations are only descriptions of the preferred embodiments of the present invention. Those with ordinary knowledge of this technology may make other modifications based on the patent scope defined below and the above explanations, but these modifications should still be made. It is for the spirit of the present invention and within the scope of rights of the present invention.
100:具縮回緩衝之雙動缸 100: Double-acting cylinder with retraction buffer
1:缸體 1: Cylinder body
10:缸室 10: Tank room
101:前缸室空間 101: Front cylinder room space
102:後缸室空間 102: Rear cylinder room space
11:前流體進出口 11: Front fluid inlet and outlet
12:後流體進出口 12: Rear fluid inlet and outlet
121:縱向連通孔 121: Longitudinal connecting hole
2:軸心 2: Axis
3:活塞部 3: Piston part
31:內縮槽 31:Inner shrink groove
4:緩衝部 4: Buffer part
41:抵靠塊 41: against block
42:彈性件 42: Elastic parts
43:導引桿 43:Guide rod
44:導引件 44: Guide parts
C:間隙流道 C: Gap flow channel
Claims (9)
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TW111143484A TWI836723B (en) | 2022-11-15 | 2022-11-15 | Double-acting cylinder with retraction cushion function |
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TW202421930A TW202421930A (en) | 2024-06-01 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201538859A (en) * | 2014-04-14 | 2015-10-16 | Smc Corp | Fluid pressure cylinder |
CN105041769A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Fast-extending and slow-contracting hydraulic cylinder |
US20180223878A1 (en) * | 2015-08-04 | 2018-08-09 | Antonioni Hydraulic Solutions S.R.L. | Hydraulic actuator, particularly of the shock absorbing and/or damping type |
CN113944675A (en) * | 2021-11-24 | 2022-01-18 | 四川凌峰航空液压机械有限公司 | Actuator tail end damping buffer mechanism |
TW202212705A (en) * | 2020-07-22 | 2022-04-01 | 日商Smc股份有限公司 | Fluid pressure cylinder |
-
2022
- 2022-11-15 TW TW111143484A patent/TWI836723B/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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TW201538859A (en) * | 2014-04-14 | 2015-10-16 | Smc Corp | Fluid pressure cylinder |
US20180223878A1 (en) * | 2015-08-04 | 2018-08-09 | Antonioni Hydraulic Solutions S.R.L. | Hydraulic actuator, particularly of the shock absorbing and/or damping type |
CN105041769A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Fast-extending and slow-contracting hydraulic cylinder |
TW202212705A (en) * | 2020-07-22 | 2022-04-01 | 日商Smc股份有限公司 | Fluid pressure cylinder |
CN113944675A (en) * | 2021-11-24 | 2022-01-18 | 四川凌峰航空液压机械有限公司 | Actuator tail end damping buffer mechanism |
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