TWI421421B - High-load linear actuator - Google Patents
High-load linear actuator Download PDFInfo
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- TWI421421B TWI421421B TW99144442A TW99144442A TWI421421B TW I421421 B TWI421421 B TW I421421B TW 99144442 A TW99144442 A TW 99144442A TW 99144442 A TW99144442 A TW 99144442A TW I421421 B TWI421421 B TW I421421B
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Description
本發明係有關於一種致動器,尤指一種用於醫療器材、電動椅等設備的高載重線性致動器。 The present invention relates to an actuator, and more particularly to a high load linear actuator for use in medical equipment, electric chairs, and the like.
隨著經濟的發展和社會的富裕,國人在飲食方面大量的攝取高營養和高熱量的食材,而使國人整體平均體重不斷的被提高;受到前述原因的影響,從事醫療器材或電動椅等設備的製造廠商,必須針對廣泛應用在前述設備的線性致動器(Linear Actuator)進行創新改良,繼續產製或設計出合乎市場需求的產品。 With the development of the economy and the affluence of the society, the Chinese people ingest a large amount of high-nutrition and high-calorie ingredients in the diet, so that the average weight of the Chinese people is continuously increased; under the influence of the above reasons, they are engaged in medical equipment or electric chairs. Manufacturers must innovate and improve the Linear Actuator, which is widely used in the aforementioned equipment, to continue to manufacture or design products that meet market needs.
以往線性致動器主要係利用電動機搭配蝸桿及蝸輪等驅動組件來帶動導螺桿旋轉,同時藉由導螺桿驅使螺接於其上的伸縮管作線性的伸出或縮回的動作;如此,以組合成一線性致動器。 In the past, linear actuators mainly used a motor with a worm and a worm gear to drive the lead screw to rotate, and at the same time, the lead screw drives the telescopic tube screwed thereon to linearly extend or retract; A linear actuator is assembled.
由於傳統的線性致動器配置結構僅能用在較低載重的醫療設備上,對於市場所需求的高載重線性致動器,因安全性負荷考量和使用壽命問題,已無法滿足線性致動器的階段性產品需求。另外,用於高載重設備的線性致動器,其伸縮管在縮回過程中的速度,亦是影響到使用者使用的舒適度和安全性 等問題,其皆是待加以改善克服者。 Since the traditional linear actuator configuration can only be used on lower-load medical devices, the high-load linear actuators required by the market cannot meet the linear actuator due to safety load considerations and service life problems. Stage product requirements. In addition, the linear actuator used in high-load equipment, the speed of the telescopic tube during the retracting process, also affects the comfort and safety of the user. And so on, they are all to be improved to overcome.
本發明之一目的,在於提供一種高載重線性致動器,其是藉助驅動機構和蝸輪組件的配置結構,以形成穩固的支承作用而能夠應用在高載重的設備上。 It is an object of the present invention to provide a high load linear actuator which can be applied to a high load apparatus by means of a configuration of a drive mechanism and a worm gear assembly to form a stable support.
為了達成上述之目的,本發明係提供一種高載重線性致動器,包括一驅動機構、一蝸桿、一蝸輪組件、一導螺桿、一伸縮管及一外管,該驅動機構包含一機座及可產生正反轉的一電動機,該機座具有一承接部和一安置部,該承接部包含一座體和自該座體延伸成型的一中空筒柱,該安置部包含連接在該中空筒柱的一環體,該電動機固定在該座體;該蝸桿係自該電動機凸伸而出並且穿入該中空筒柱中;該蝸輪組件包含一蝸輪及共同將該蝸輪支承在該環體內部的二軸承,該蝸輪係與該蝸桿相互囓合傳動;該導螺桿穿接該蝸輪並受該電動機的致動而產生旋轉;該伸縮管套設在該導螺桿外部並與該導螺桿相互螺接;該外管套接在該伸縮管外部,該伸縮管受該導螺桿的旋轉驅動而相對該外管產生線性伸縮移動。 In order to achieve the above object, the present invention provides a high load linear actuator comprising a driving mechanism, a worm, a worm gear assembly, a lead screw, a telescopic tube and an outer tube, the driving mechanism comprising a base and An electric motor capable of generating a positive and negative reversal, the base having a receiving portion and a seating portion, the receiving portion comprising a body and a hollow cylinder extending from the seat body, the mounting portion comprising the hollow tubular column a ring body, the motor is fixed to the seat body; the worm is protruded from the motor and penetrates into the hollow cylinder; the worm gear assembly includes a worm wheel and a common worm wheel supporting the inside of the ring body a bearing, the worm gear is meshed with the worm; the lead screw penetrates the worm wheel and is rotated by the actuation of the motor; the telescopic tube is sleeved outside the lead screw and screwed to the lead screw; The outer tube is sleeved outside the telescopic tube, and the telescopic tube is driven by the rotation of the lead screw to generate linear telescopic movement relative to the outer tube.
本發明還具有以下功效,藉助機座和蝸輪組件的組合設計,不僅可提昇蝸輪被支承在環體內的穩固性,且在組裝和維修的過程皆因被簡化而縮短拆、組時間。藉由減速傳動機構的設置,利用各滾針與中介環的摩擦作用,以使導螺桿在特定方向的旋轉受到阻礙而可達成減速作用者。利用中介環可在扭力彈簧內部輕易轉動,使傳動機構的傳動效能良好。導螺 桿受力反推時,可使中介環、各滾針、被動軸套及導螺桿皆不產生相對傳動情況,以令導螺桿被牢牢的固定,而能有效地防止導螺桿與螺帽的自滑產生。各傳動元件之間的摩擦力是隨著負載的增加而增加,因此空載時沒有不必要的摩擦力產生而不消耗能量,且伸縮管的縮入速度在不同負載下大致相同,因此可保持在速度恆定的情況作下降,而提高使用者的使用舒適感。 The invention also has the following effects. By the combined design of the base and the worm gear assembly, not only the stability of the worm wheel supported in the ring body can be improved, but also the assembly and maintenance process is simplified and the disassembly and assembly time is shortened. By the arrangement of the reduction transmission mechanism, the friction between the respective needles and the intermediate ring is utilized, so that the rotation of the lead screw in a specific direction is hindered, and the deceleration effect can be achieved. The intermediate ring can be easily rotated inside the torsion spring to make the transmission performance of the transmission mechanism good. Guide screw When the rod is pushed back by force, the intermediate ring, each needle roller, the passive bushing and the lead screw can not be driven relative to each other, so that the lead screw is firmly fixed, and the lead screw and the nut can be effectively prevented. Self-slip occurs. The friction between the transmission elements increases as the load increases, so no unnecessary friction is generated during no-load without consuming energy, and the retraction speed of the telescopic tube is approximately the same under different loads, thus maintaining Decrease in the case of constant speed, and improve user comfort.
10‧‧‧驅動機構 10‧‧‧ drive mechanism
11‧‧‧機座 11‧‧‧After
111‧‧‧承接部 111‧‧‧Receiving Department
112‧‧‧座體 112‧‧‧ body
113‧‧‧中空筒柱 113‧‧‧ hollow cylinder
115‧‧‧安置部 115‧‧‧Relocation Department
116‧‧‧圓形環體 116‧‧‧Circular ring
1161‧‧‧後台階 1161‧‧‧post steps
117‧‧‧蓋板 117‧‧‧ cover
1171‧‧‧前台階 1171‧‧ ‧ front steps
12‧‧‧電動機 12‧‧‧Electric motor
20‧‧‧蝸桿 20‧‧‧ worm
30‧‧‧蝸輪組件 30‧‧‧worm gear assembly
31‧‧‧蝸輪 31‧‧‧ worm gear
311‧‧‧環形齒面 311‧‧‧Ring tooth surface
312‧‧‧中空心軸 312‧‧‧ hollow shaft
313‧‧‧前容槽 313‧‧‧ 前容槽
314‧‧‧後容槽 314‧‧‧ Hourong
315‧‧‧內齒 315‧‧‧ internal teeth
32‧‧‧前軸承 32‧‧‧ front bearing
33‧‧‧後軸承 33‧‧‧ rear bearing
40‧‧‧導螺桿 40‧‧‧ lead screw
41‧‧‧螺牙段 41‧‧‧ thread segments
42‧‧‧圓軸段 42‧‧‧round shaft
421‧‧‧外定位平面 421‧‧‧Outer positioning plane
50‧‧‧伸縮管 50‧‧‧ telescopic tube
51‧‧‧管體 51‧‧‧ tube body
52‧‧‧螺帽 52‧‧‧ nuts
521‧‧‧嵌塊 521‧‧‧Block
60‧‧‧外管 60‧‧‧External management
61‧‧‧溝槽 61‧‧‧ trench
65‧‧‧后支承機構 65‧‧‧ rear support mechanism
651‧‧‧半罩 651‧‧‧ half cover
652‧‧‧滾珠軸承 652‧‧‧Ball bearings
653‧‧‧插槽 653‧‧‧Slot
70‧‧‧減速傳動機構 70‧‧‧Reducing gear mechanism
71‧‧‧從動輪 71‧‧‧ driven wheel
711‧‧‧外齒 711‧‧‧ external teeth
72‧‧‧爪環 72‧‧‧ claw ring
721‧‧‧卡槽 721‧‧‧ card slot
722‧‧‧爪臂 722‧‧‧ claw arm
723‧‧‧間隔槽 723‧‧‧ spacing slot
73‧‧‧被動軸套 73‧‧‧Passive bushings
731‧‧‧內平面 731‧‧‧ inner plane
732‧‧‧凸條 732‧‧ ‧ ribs
733‧‧‧凹槽 733‧‧‧ Groove
74‧‧‧滾針 74‧‧‧needle needle
75‧‧‧中介環 75‧‧‧Intermediate ring
76‧‧‧扭力彈簧 76‧‧‧Torque spring
761‧‧‧定位段 761‧‧‧ positioning segment
77‧‧‧限位擋蓋 77‧‧‧Limited door
80‧‧‧外殼 80‧‧‧ Shell
90‧‧‧電氣單元 90‧‧‧Electrical unit
第一圖係本發明線性致動器組合外觀圖。 The first figure is an appearance view of the linear actuator combination of the present invention.
第二圖係本發明之驅動機構和蝸輪組件立體分解圖。 The second drawing is an exploded perspective view of the drive mechanism and the worm gear assembly of the present invention.
第三圖係第二圖之另一視角圖。 The third figure is another perspective view of the second figure.
第四圖係第二圖之各元件組合剖視圖。 The fourth drawing is a sectional view of each component combination of the second drawing.
第五圖係本發明線性致動器之立體分解圖。 The fifth figure is an exploded perspective view of the linear actuator of the present invention.
第六圖係本發明之減速傳動機構立體分解圖。 Figure 6 is a perspective exploded view of the reduction transmission mechanism of the present invention.
第七圖係本發明之減速傳動機構組合剖視圖。 Figure 7 is a cross-sectional view showing the combination of the reduction transmission mechanism of the present invention.
第八圖係本發明線性致動器之組合示意圖。 The eighth figure is a schematic diagram of the combination of the linear actuators of the present invention.
第九圖係本發明線性致動器組合剖視圖。 Figure 9 is a cross-sectional view of the linear actuator assembly of the present invention.
有關本發明之詳細說明及技術內容,配合圖式說明如下,然而所附圖式僅提供參考與說明用,並非用來對本發明加以限制者。 The detailed description and technical content of the present invention are set forth in the accompanying drawings.
請參閱第一圖所示,本發明係提供一種高載重線性致動器,此致動器主要應用在數百公斤或千公斤以上的負載,包括一驅動機構10、一蝸桿20、一蝸輪組件30、一導螺桿40、一伸縮管50(如第八圖所示)及一外管60。 Referring to the first figure, the present invention provides a high load linear actuator which is mainly applied to loads of several hundred kilograms or more, including a driving mechanism 10, a worm 20, and a worm gear assembly 30. A lead screw 40, a telescopic tube 50 (as shown in the eighth figure) and an outer tube 60.
請參閱第二至四圖所示,驅動機構10包含一機座11及可產生正反轉的一電動機12,機座11具有一承接部111和一安置部115,承接部111由一板狀座體112和自座體112向上延伸成型的一中空筒柱113所構成,電動機12是透過螺絲(圖未示出)鎖固在座體112下方。安置部115包含一圓形環體116和一蓋板117,圓形環體116與座體112和中空筒柱113為一體構成。另在圓形環體116的內側形成有一後台階1161;蓋板117則是透過螺絲(圖未示出)鎖固在圓形環體116的一側邊,蓋板117在對應圓形環體116的一側亦形成有一前台階1171(如第三圖所示)。 Referring to the second to fourth figures, the driving mechanism 10 includes a base 11 and a motor 12 capable of generating a forward and reverse rotation. The base 11 has a receiving portion 111 and a seating portion 115. The receiving portion 111 is formed by a plate. The base body 112 is formed by a hollow cylinder 113 formed by extending upwardly from the base body 112. The motor 12 is locked under the seat body 112 by screws (not shown). The seating portion 115 includes a circular ring body 116 and a cover plate 117. The circular ring body 116 is integrally formed with the seat body 112 and the hollow cylinder column 113. Further, a rear step 1161 is formed on the inner side of the circular ring body 116; the cover plate 117 is locked to one side of the circular ring body 116 by a screw (not shown), and the cover plate 117 is corresponding to the circular ring body. A front step 1171 is also formed on one side of the 116 (as shown in the third figure).
蝸桿20可為前述電動機12的軸心而從電動機12中心凸伸而出,亦可以連接方式自電動機12的中心延伸而出,在電動機12固定於前述座體112時,蝸桿20是穿入中空筒柱113內部,且其自由端是利用軸套承接而安置在中空筒柱113,藉以增加固持的穩定度。 The worm 20 may protrude from the center of the motor 12 in the axial center of the motor 12, or may extend from the center of the motor 12 in a connected manner. When the motor 12 is fixed to the seat 112, the worm 20 is penetrated into the hollow. The inside of the column 113, and the free end thereof is received by the sleeve and placed in the hollow cylinder column 113, thereby increasing the stability of the holding.
蝸輪組件30包含一蝸輪31、一前軸承32及一後軸承33,蝸輪31具有一環形齒面311和連接環形齒面311的一中空心軸312,在環形齒面311和中空心軸312之間形成有前、後容槽313、314,另在中空心軸312的後側成型有一內齒輪315(如第三 圖所示),環形齒面311係與前述蝸桿20相互囓合傳動。參閱第四圖,前軸承32套接在中空心軸312並容設在前容槽313內,前軸承32外周緣的一部份區域是裸露出環形齒面311的外部,此前軸承32的裸露區域是固接在蓋板117的前台階1171內;同理,後軸承33亦套接在中空心軸312並容設在後容槽314內,後軸承33外周緣的一部份區域是裸露出環形齒面311的外部;此後軸承33的裸露區域是固接在圓形環體116的後台階1161內;如此,以將蝸輪31共同支承於安置部115的圓形環體116和蓋板117內。 The worm gear assembly 30 includes a worm wheel 31, a front bearing 32 and a rear bearing 33. The worm wheel 31 has an annular tooth surface 311 and a hollow hollow shaft 312 connecting the annular tooth surface 311, and the annular tooth surface 311 and the hollow hollow shaft 312. Forming front and rear pockets 313, 314, and forming an internal gear 315 on the rear side of the hollow shaft 312 (such as the third As shown, the annular tooth surface 311 is in meshing engagement with the aforementioned worm 20. Referring to the fourth figure, the front bearing 32 is sleeved in the middle hollow shaft 312 and accommodated in the front pocket 313. A portion of the outer circumference of the front bearing 32 is exposed outside the annular tooth surface 311, and the bearing 32 is bare before. The area is fixed in the front step 1171 of the cover plate 117; similarly, the rear bearing 33 is also sleeved in the middle hollow shaft 312 and accommodated in the rear pocket 314, and a part of the outer circumference of the rear bearing 33 is exposed. The outer portion of the annular tooth surface 311 is formed; thereafter, the exposed portion of the bearing 33 is fixed in the rear step 1161 of the circular ring body 116; thus, the circular ring body 116 and the cover plate for supporting the worm wheel 31 in the seating portion 115 in common 117.
請參閱第五圖所示,導螺桿40具有一螺牙段41及自螺牙段41延伸的一圓軸段42,在圓軸段42遠離螺牙段41的一端設有一外定位平面421,導螺桿40的一端是穿接在前述蝸輪31的中空心軸312內(如第九圖所示),另一端則朝遠離機座11的方向向外延伸,此導螺桿40是以電動機12驅動蝸桿20並帶動蝸輪31來產生旋轉動作。 Referring to the fifth figure, the lead screw 40 has a threaded section 41 and a circular shaft section 42 extending from the threaded section 41. An outer positioning plane 421 is disposed at an end of the circular shaft section 42 away from the threaded section 41. One end of the screw 40 is inserted into the hollow shaft 312 of the worm wheel 31 (as shown in the ninth figure), and the other end extends outwardly away from the frame 11. The lead screw 40 drives the worm with the motor 12. 20 and drive the worm wheel 31 to generate a rotating motion.
伸縮管50具有一管體51和固接在管體51端部的一螺帽52,螺帽52是與前述導螺桿40相互螺接傳動(如第九圖所示),在螺帽52的外周緣凸伸有複數嵌塊521。 The telescopic tube 50 has a tube body 51 and a nut 52 fixed to the end of the tube body 51. The nut 52 is screwed to the lead screw 40 (as shown in FIG. 9), and the nut 52 is A plurality of inserts 521 are protruded from the outer periphery.
外管60套接在伸縮管50的管體51外部(如第一圖所示),在外管60內部設有供前述各嵌塊521嵌入的複數溝槽61(如第九圖所示),以限制伸縮管50的旋轉作動,在伸縮管50受導螺桿40的旋轉驅動後將相對於外管60作線性伸縮移動。 The outer tube 60 is sleeved on the outside of the tube 51 of the telescopic tube 50 (as shown in the first figure), and a plurality of grooves 61 (shown in FIG. 9) for inserting the above-mentioned inserts 521 are disposed inside the outer tube 60. By restricting the rotation of the telescopic tube 50, the telescopic tube 50 is linearly telescopically moved relative to the outer tube 60 after being driven by the rotation of the lead screw 40.
本發明的線性致動器更包括一后支承機構65(如第五圖所示),其主要包括二個半罩651及被二半罩651所共同夾掣固定的一滾珠軸承652,此滾珠軸承652係供前述導螺桿40末端穿接安置;如此,可更提高導螺桿40和伸縮管50的作動穩定度。另在二半罩651的接合處開設有一插槽653。 The linear actuator of the present invention further includes a rear support mechanism 65 (as shown in FIG. 5), which mainly includes two half covers 651 and a ball bearing 652 which is clamped and fixed by the two half covers 651. The bearing 652 is disposed for the end of the lead screw 40 to be pierced; thus, the actuation stability of the lead screw 40 and the telescopic tube 50 can be further improved. Another slot 653 is formed at the junction of the second half cover 651.
請參閱第六及七圖所示,本發明的線性致動器更包括一減速傳動機構70,其係套接在前述導螺桿40且介於后支承機構65和蝸輪組件30之間,此減速傳動機構70主要包含一從動輪71、一爪環72、一被動軸套73、多數滾針74、一中介環75、一扭力彈簧76及一限位擋蓋77;從動輪71是套接在導螺桿40的圓軸段42位置,且其具有一部份穿接蝸輪31之內齒315的複數外齒711;爪環72設有與前述外齒711相互卡固的複數卡槽721,此爪環72成型有多數爪臂722,並在任二相鄰爪臂722之間形成有一間隔槽723。 Referring to Figures 6 and 7, the linear actuator of the present invention further includes a reduction transmission mechanism 70 that is sleeved between the lead screw 40 and interposed between the rear support mechanism 65 and the worm gear assembly 30. The transmission mechanism 70 mainly includes a driven wheel 71, a claw ring 72, a passive bushing 73, a plurality of needle rollers 74, an intermediate ring 75, a torsion spring 76 and a limit stop cover 77; the driven wheel 71 is sleeved at The cylindrical shaft portion 42 of the lead screw 40 is located, and has a plurality of external teeth 711 which are partially connected to the internal teeth 315 of the worm wheel 31. The claw ring 72 is provided with a plurality of card slots 721 which are mutually engaged with the external teeth 711. The claw ring 72 is formed with a plurality of claw arms 722, and a spacing groove 723 is formed between any two adjacent claw arms 722.
被動軸套73設有一內定位平面731,另在被動軸套73外周緣延伸有複數凸條732,於任二相鄰凸條732之間形成有一凹槽733,被動軸套73是套接在導螺桿40,並以其內定位平面731和前述圓軸段42的外定位平面421相互嵌固而一起轉動,且被動軸套73是容置在爪環72的各爪臂722內;各滾針74分別插接在前述各間隔槽723和各凹槽733所圍設形成的空間中;中介環75套接在爪環72外周緣並與各滾針74相互接觸。扭力彈簧76彎折有一定位段761,此扭力彈簧76是以彈力束緊前述中介環75的外周緣,定位段761則是穿入前述插槽653而固 定。限位擋蓋77是套接在被動軸套73的一側,並且封住爪環72和各滾針74的端面(如第九圖所示)。 The passive bushing 73 is provided with an inner positioning plane 731, and a plurality of ribs 732 extend from the outer periphery of the passive bushing 73. A recess 733 is formed between any two adjacent ribs 732, and the passive bushing 73 is sleeved at The lead screw 40 is rotated by the inner positioning plane 731 and the outer positioning plane 421 of the circular shaft section 42, and the passive sleeve 73 is received in each claw arm 722 of the claw ring 72; The needles 74 are respectively inserted into the spaces formed by the respective spacing grooves 723 and the respective grooves 733; the intermediate ring 75 is sleeved on the outer circumference of the claw ring 72 and is in contact with the respective needle rollers 74. The torsion spring 76 is bent with a positioning section 761. The torsion spring 76 elastically tightens the outer circumference of the intermediate ring 75, and the positioning section 761 penetrates into the slot 653 to be solid. set. The limit stop cover 77 is sleeved on one side of the passive bushing 73 and seals the claw ring 72 and the end faces of the respective needle rollers 74 (as shown in the ninth figure).
請參閱第八及九圖所示,本發明的線性致動器更包括一外殼80,此外殼80包覆在驅動機構10及減速傳動機構70外部,並供后支承機構65支承及供外管60的一側來穿接置放。 Referring to FIGS. 8 and 9, the linear actuator of the present invention further includes a housing 80 which is wrapped around the drive mechanism 10 and the reduction transmission mechanism 70 and supported by the rear support mechanism 65 and provided for the outer tube. One side of the 60 is placed and placed.
此外,本發明的線性致動器更包括一電氣單元90(如第一圖所示),其係配設在外殼80的內部且位於前述電動機12的一側邊位置。 Further, the linear actuator of the present invention further includes an electric unit 90 (shown in the first figure) which is disposed inside the outer casing 80 and located at one side of the motor 12.
請參閱第八圖,使用時當蝸輪31受蝸桿20正向驅動而作順時針方向旋轉時,亦即是導螺桿40的帶動伸縮管50向內縮入外管60內部;請參閱第七圖,各爪臂722將推動中介環75及各滾針74作轉動,藉助扭力彈簧76的旋向與蝸輪31旋轉方向相同,且其定位段761固定在半罩651的插槽653內(如第五圖所示),而令扭力彈簧76對中介環75產生束緊的卡掣止動(即中介環75被緊抱而不能產生轉動),使各爪臂722驅動各滾針74及中介環75的摩擦力增加,而降低導螺桿40旋轉速度;如此,此線性致動器安裝在電動床或椅時,可使伸縮管50縮入外管60內部的速度較為緩慢,以增加使用者的使用舒適度。 Referring to the eighth figure, when the worm wheel 31 is rotated in the clockwise direction by the worm gear 20 in the forward direction, that is, the lead screw 40 of the lead screw 40 is retracted into the outer tube 60; Each of the claw arms 722 will push the intermediate ring 75 and the respective needle rollers 74 to rotate. The direction of rotation of the torsion spring 76 is the same as the direction of rotation of the worm wheel 31, and the positioning portion 761 is fixed in the slot 653 of the half cover 651 (eg, The five-figure spring 76 causes the torsion spring 76 to produce a tightening of the intermediate ring 75 (ie, the intermediate ring 75 is tightly held and cannot rotate), so that each of the claw arms 722 drives the respective needle 74 and the intermediate ring. The frictional force of 75 is increased, and the rotation speed of the lead screw 40 is lowered; thus, when the linear actuator is mounted on the electric bed or the chair, the speed of the telescopic tube 50 retracting into the outer tube 60 is slower to increase the user's Use comfort.
當蝸輪31受蝸桿20反向驅動而作逆時針方向旋轉時,亦即是導螺桿40帶動伸縮管50向外伸出外管60外部;續請參閱第七圖,各爪臂722將推動中介環75及各滾針74作轉動,由於扭力彈簧76的旋向與蝸輪31旋轉方向相反,扭力彈簧76將因為 中介環75的轉動而產生鬆開狀態,此時中介環75、扭力彈簧76及各滾針74之間摩擦阻尼小,而使中介環75可在扭力彈簧76內部輕易轉動;如此,即可令內部機構的傳動效能良好。 When the worm wheel 31 is driven by the worm gear 20 to rotate in the counterclockwise direction, that is, the lead screw 40 drives the extension tube 50 to extend outwardly from the outside of the outer tube 60; Continuing to refer to the seventh figure, each of the claw arms 722 will push the intermediate ring. 75 and each of the needle rollers 74 rotates, since the direction of rotation of the torsion spring 76 is opposite to the direction of rotation of the worm wheel 31, the torsion spring 76 will be The rotation of the intermediate ring 75 causes a loose state. At this time, the frictional damping between the intermediate ring 75, the torsion spring 76 and each of the needle rollers 74 is small, so that the intermediate ring 75 can be easily rotated inside the torsion spring 76; The transmission of the internal mechanism is good.
綜上所述,本發明之高載重線性致動器確可達到預期之使用目的,而解決習知之缺失,又因極具新穎性及進步性,完全符合發明專利申請要件,爰依專利法提出申請,敬請詳查並賜准本案專利,以保障發明人之權利。 In summary, the high-load linear actuator of the present invention can achieve the intended use purpose, and solves the lack of the prior art, and is extremely novel and progressive, fully conforms to the requirements of the invention patent application, and is proposed according to the patent law. To apply, please check and grant the patent in this case to protect the rights of the inventor.
10‧‧‧驅動機構 10‧‧‧ drive mechanism
11‧‧‧機座 11‧‧‧After
111‧‧‧承接部 111‧‧‧Receiving Department
112‧‧‧座體 112‧‧‧ body
113‧‧‧中空筒柱 113‧‧‧ hollow cylinder
115‧‧‧安置部 115‧‧‧Relocation Department
116‧‧‧圓形環體 116‧‧‧Circular ring
1161‧‧‧後台階 1161‧‧‧post steps
117‧‧‧蓋板 117‧‧‧ cover
12‧‧‧電動機 12‧‧‧Electric motor
20‧‧‧蝸桿 20‧‧‧ worm
30‧‧‧蝸輪組件 30‧‧‧worm gear assembly
31‧‧‧蝸輪 31‧‧‧ worm gear
311‧‧‧環形齒面 311‧‧‧Ring tooth surface
312‧‧‧中空心軸 312‧‧‧ hollow shaft
313‧‧‧前容槽 313‧‧‧ 前容槽
32‧‧‧前軸承 32‧‧‧ front bearing
33‧‧‧後軸承 33‧‧‧ rear bearing
Claims (11)
Priority Applications (1)
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TW99144442A TWI421421B (en) | 2010-12-17 | 2010-12-17 | High-load linear actuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW99144442A TWI421421B (en) | 2010-12-17 | 2010-12-17 | High-load linear actuator |
Publications (2)
Publication Number | Publication Date |
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TW201226740A TW201226740A (en) | 2012-07-01 |
TWI421421B true TWI421421B (en) | 2014-01-01 |
Family
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Application Number | Title | Priority Date | Filing Date |
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TW99144442A TWI421421B (en) | 2010-12-17 | 2010-12-17 | High-load linear actuator |
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TW (1) | TWI421421B (en) |
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CN104622658A (en) * | 2015-03-09 | 2015-05-20 | 北京大基康明医疗设备有限公司 | Telescopic claw of medical hospital bed transporting robot and method for grabbing bed board by using telescopic claw |
ES2834734B2 (en) * | 2019-12-17 | 2022-01-25 | Hooks Tania Verdu S L | MECHANICAL TENSIONING AND RELEASING DEVICE FOR CONTAINER LATCHING TIES |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08322189A (en) * | 1995-05-23 | 1996-12-03 | Nippon Seiko Kk | Motor linear actuator |
US20060243075A1 (en) * | 2005-05-02 | 2006-11-02 | Hiwin Mikrosystem Corp. | Linear actuator with quick release mechanism |
US7594450B2 (en) * | 2005-12-27 | 2009-09-29 | Jaeger Industrial Co., Ltd. | Quick-releasing linear actuator |
US7607526B2 (en) * | 2005-06-08 | 2009-10-27 | Ntn Corporation | Anti-reverse input clutch |
TWM404297U (en) * | 2010-12-17 | 2011-05-21 | Timotion Technology Co Ltd | Linear actuator with high-weight loading |
-
2010
- 2010-12-17 TW TW99144442A patent/TWI421421B/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08322189A (en) * | 1995-05-23 | 1996-12-03 | Nippon Seiko Kk | Motor linear actuator |
US20060243075A1 (en) * | 2005-05-02 | 2006-11-02 | Hiwin Mikrosystem Corp. | Linear actuator with quick release mechanism |
US7607526B2 (en) * | 2005-06-08 | 2009-10-27 | Ntn Corporation | Anti-reverse input clutch |
US7594450B2 (en) * | 2005-12-27 | 2009-09-29 | Jaeger Industrial Co., Ltd. | Quick-releasing linear actuator |
TWM404297U (en) * | 2010-12-17 | 2011-05-21 | Timotion Technology Co Ltd | Linear actuator with high-weight loading |
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TW201226740A (en) | 2012-07-01 |
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