TWI761747B - Wheel chair driving structure - Google Patents
Wheel chair driving structure Download PDFInfo
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- TWI761747B TWI761747B TW109100239A TW109100239A TWI761747B TW I761747 B TWI761747 B TW I761747B TW 109100239 A TW109100239 A TW 109100239A TW 109100239 A TW109100239 A TW 109100239A TW I761747 B TWI761747 B TW I761747B
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Abstract
Description
本發明是有關於一種輪椅驅動結構,且尤其是有關一種手動驅動與電動驅動兼具之輪椅驅動結構。 The present invention relates to a wheelchair driving structure, and more particularly, to a wheelchair driving structure with both manual driving and electric driving.
目前在身心障礙人口統計的計算中,肢體障礙者所占比例為最高,約為身心障礙者的31%;因此,輔助下肢行動之行動輔具愈顯重要。再者,行動輔具除了提供下肢行動不便者使用之外,老年人亦有使用需求,由於目前人口老化的跡象不斷成長,因此,已有許多學業界投入行動輔具的開發及改良。 At present, in the calculation of the population with disabilities, the proportion of people with physical disabilities is the highest, about 31% of the people with disabilities; therefore, the mobility aids that assist the movement of the lower limbs are becoming more and more important. Furthermore, in addition to providing mobility aids for those with lower extremity mobility issues, the elderly also need to use them. Due to the growing signs of an aging population, many academic circles have invested in the development and improvement of mobility aids.
輪椅是常見的行動輔具,而輪椅的驅動可分為手動驅動與電動驅動,習知之手動驅動方式為手輪式驅動,然,手輪式驅動容易造成手腕關節部位的韌帶壓迫而產生慢性的運動傷害,故有其待改進之處。電動驅動採用馬達提供動力,而能減輕使用者之負擔,但電動驅動容易導致輪椅之重量及體積增加,同時亦會產生收納問題。 Wheelchair is a common mobility aid, and the drive of wheelchair can be divided into manual drive and electric drive. The conventional manual drive method is handwheel drive. However, handwheel drive is easy to cause ligament compression at the wrist joints and cause chronic disease. Sports injuries, so there is room for improvement. Electric drives use motors to provide power, which can reduce the burden on users, but electric drives tend to increase the weight and volume of the wheelchair, and also cause storage problems.
為了增加輪椅的使用方便性,手動驅動與電動驅動兼具之輪椅被開發出來,但上述之問題仍然存在,且驅 動結構更為複雜。有鑑於此,如何有效地改良輪椅的驅動結構,遂成相關業者努力的目標。 In order to increase the convenience of the wheelchair, wheelchairs with both manual drive and electric drive have been developed, but the above problems still exist, and the drive The dynamic structure is more complex. In view of this, how to effectively improve the driving structure of the wheelchair has become the goal of the relevant industry.
為解決上述問題,本發明提供一種輪椅驅動結構,透過其結構配置,可達到工作模式切換及結構簡化之優點。 In order to solve the above problems, the present invention provides a wheelchair drive structure, through which the structural configuration can achieve the advantages of switching the working mode and simplifying the structure.
依據本發明之一態樣之一實施方式提供一種輪椅驅動結構,其設置於一輪椅的一輪子上且包含一輪轂、一中心軸組件、一行星齒輪組、一馬達單元及一驅動桿單元。 中心軸組件位於輪轂內,行星齒輪組位於輪轂內且包含一太陽齒輪、一環齒輪、至少一行星齒輪及一行星臂。太陽齒輪套設於中心軸組件,環齒輪套設於中心軸組件且與輪轂固接,前述至少一行星齒輪囓接於太陽齒輪及環齒輪之間,行星臂樞接於前述至少一行星齒輪。馬達單元位於輪轂內且耦合於行星臂,驅動桿單元連動太陽齒輪。其中,中心軸組件作動以選擇性地阻止太陽齒輪或行星臂相對中心軸組件轉動。 An embodiment according to an aspect of the present invention provides a wheelchair driving structure, which is disposed on a wheel of a wheelchair and includes a hub, a central shaft assembly, a planetary gear set, a motor unit and a drive rod unit. The central shaft assembly is located in the hub, and the planetary gear set is located in the hub and includes a sun gear, a ring gear, at least one planetary gear and a planetary arm. The sun gear is sleeved on the central shaft assembly, the ring gear is sleeved on the central shaft assembly and is fixedly connected with the hub, the at least one planetary gear is engaged between the sun gear and the ring gear, and the planetary arm is pivotally connected to the at least one planetary gear. The motor unit is located in the wheel hub and is coupled to the planetary arm, and the drive rod unit is linked with the sun gear. Wherein, the central shaft assembly is actuated to selectively prevent the sun gear or the planetary arm from rotating relative to the central shaft assembly.
藉此,當中心軸組件對太陽齒輪限位時,由馬達單元帶動輪轂轉動;反之,當中心軸組件對行星臂限位時,由驅動桿單元帶動輪轂轉動,而具有結構簡化之優點。 Thereby, when the central shaft assembly limits the sun gear, the motor unit drives the hub to rotate; on the contrary, when the central shaft assembly limits the planetary arm, the driving rod unit drives the hub to rotate, which has the advantage of simplified structure.
依據前述之輪椅驅動結構的複數實施例,中心軸組件包含一主軸、一切換軸、一第一棘爪及一第二棘爪。主軸包含一套管部,且套管部包含二開孔間隔排列,切換軸 可轉動地插設於套管部內,第一棘爪可動地位於一開孔內且選擇性地耦合於太陽齒輪,第二棘爪可動地位於另一開孔內且選擇性地耦合於行星臂。其中,切換軸被作動使第一棘爪與太陽齒輪耦合時,阻止太陽齒輪相對中心軸組件轉動;切換軸被作動使第二棘爪與行星臂耦合時,阻止行星臂相對中心軸組件轉動。 According to various embodiments of the wheelchair driving structure, the central shaft assembly includes a main shaft, a switching shaft, a first pawl and a second pawl. The main shaft includes a sleeve part, and the sleeve part includes two openings arranged at intervals, and the switching shaft rotatably inserted in the sleeve portion, the first pawl is movably located in an opening and is selectively coupled to the sun gear, and the second pawl is movably located in another opening and selectively coupled to the planetary arm . When the switching shaft is actuated to couple the first pawl with the sun gear, the sun gear is prevented from rotating relative to the central shaft assembly; when the switching shaft is actuated to couple the second pawl with the planetary arm, the planetary arm is prevented from rotating relative to the central shaft assembly.
依據前述之輪椅驅動結構的複數實施例,其中,切換軸包含一第一太陽齒輪限制槽、一第二太陽齒輪限制槽、一第一行星臂限制槽以及一第二行星臂限制槽。第二太陽齒輪限制槽與第一太陽齒輪限制槽相鄰,第一行星臂限制槽與第二太陽齒輪限制槽沿切換軸的一軸向排列,第二行星臂限制槽與第一行星臂限制槽相鄰。其中,切換軸被作動以於一第一位置、一第二位置及一第三位置切換,當切換軸位於第一位置時,第一棘爪與第一太陽齒輪限制槽對位,以使第一棘爪與太陽齒輪分離,此時僅允許驅動桿單元帶動太陽齒輪相對中心軸組件轉動;當切換軸位於第二位置時,第一棘爪與第二太陽齒輪限制槽對位且第二棘爪與第一行星臂限制槽對位,以使第一棘爪與太陽齒輪分離,且使第二棘爪與行星臂分離,此時允許馬達單元帶動行星臂及允許驅動桿單元帶動太陽齒輪相對中心軸組件轉動;當切換軸位於第三位置時,第二棘爪與第二行星臂限制槽對位,以使第二棘爪與行星臂分離,此時僅允許馬達單元帶動行星臂相對中心軸組件轉動。 According to various embodiments of the wheelchair driving structure, the switching shaft includes a first sun gear limiting groove, a second sun gear limiting groove, a first planetary arm limiting groove and a second planetary arm limiting groove. The second sun gear limiting groove is adjacent to the first sun gear limiting groove, the first planetary arm limiting groove and the second sun gear limiting groove are arranged along an axial direction of the switching shaft, and the second planetary arm limiting groove and the first planetary arm limit Slots are adjacent. The switching shaft is actuated to switch between a first position, a second position and a third position. When the switching shaft is at the first position, the first pawl is aligned with the first sun gear limiting groove, so that the first A pawl is separated from the sun gear, at this time only the drive lever unit is allowed to drive the sun gear to rotate relative to the central shaft assembly; when the switching shaft is in the second position, the first pawl is aligned with the second sun gear limiting groove and the second pawl The pawl is aligned with the limiting groove of the first planetary arm, so that the first pawl is separated from the sun gear and the second pawl is separated from the planetary arm. At this time, the motor unit is allowed to drive the planetary arm and the drive lever unit is allowed to drive the sun gear to face each other. The central shaft assembly rotates; when the switching shaft is at the third position, the second pawl is aligned with the second planetary arm limiting groove, so that the second pawl is separated from the planetary arm. At this time, only the motor unit is allowed to drive the planetary arm relative to the center The shaft assembly rotates.
依據前述之輪椅驅動結構的複數實施例,其中,馬達單元包含一減速齒輪組及一輪轂馬達,減速齒輪組與行星臂連動,輪轂馬達連接帶動減速齒輪組。 According to several embodiments of the wheelchair drive structure, the motor unit includes a reduction gear set and a hub motor, the reduction gear set is linked with the planetary arm, and the hub motor is connected to drive the reduction gear set.
依據前述之輪椅驅動結構的複數實施例,其中,驅動桿單元包含一傳動輪、一轉向輪組件及一推桿。傳動輪連接太陽齒輪,轉向輪組件選擇性地耦合於傳動輪,推桿連接轉向輪組件。其中,當轉向輪組件耦合於傳動輪時,推桿被作動以帶動傳動輪轉動。 According to several embodiments of the wheelchair driving structure, the driving rod unit includes a transmission wheel, a steering wheel assembly and a push rod. The transmission wheel is connected with the sun gear, the steering wheel assembly is selectively coupled to the transmission wheel, and the push rod is connected with the steering wheel assembly. Wherein, when the steering wheel assembly is coupled to the transmission wheel, the push rod is actuated to drive the transmission wheel to rotate.
依據前述之輪椅驅動結構的複數實施例,其中,轉向輪組件包含一主驅動齒輪、一第一轉向齒輪、一第二轉向齒輪以及一轉向盤,主驅動齒輪受推桿驅動轉動,第一轉向齒輪囓接於主驅動齒輪,第二轉向齒輪囓接於第一轉向齒輪,轉向盤連接第一轉向齒輪及第二轉向齒輪,且轉向盤帶動第一轉向齒輪及第二轉向齒輪位移。其中,轉向盤切換於一前進位置及一後退位置,當轉向盤位於前進位置時,第一轉向齒輪囓接於傳動輪;當轉向盤位於後退位置時,第二轉向齒輪囓接於傳動輪。 According to several embodiments of the wheelchair driving structure, the steering wheel assembly includes a main driving gear, a first steering gear, a second steering gear and a steering wheel, the main driving gear is driven to rotate by a push rod, and the first steering The gear is engaged with the main driving gear, the second steering gear is engaged with the first steering gear, the steering wheel is connected with the first steering gear and the second steering gear, and the steering wheel drives the first steering gear and the second steering gear to displace. The steering wheel is switched between a forward position and a backward position. When the steering wheel is at the forward position, the first steering gear is engaged with the transmission wheel; when the steering wheel is at the backward position, the second steering gear is engaged with the transmission wheel.
依據前述之輪椅驅動結構的複數實施例,其中,轉向盤更切換至一空檔位置,當轉向盤位於空檔位置時,第一轉向齒輪及第二轉向齒輪均與傳動輪分離。 According to several embodiments of the wheelchair driving structure, the steering wheel is further switched to a neutral position, and when the steering wheel is in the neutral position, the first steering gear and the second steering gear are separated from the transmission wheel.
依據前述之輪椅驅動結構的複數實施例,其中,推桿包含一單向軸承,單向軸承樞接於主驅動齒輪。 According to various embodiments of the wheelchair driving structure, the push rod includes a one-way bearing, and the one-way bearing is pivotally connected to the main driving gear.
依據前述之輪椅驅動結構的複數實施例,其中,更包含一碟煞單元,碟煞單元耦合於輪轂。 According to several embodiments of the wheelchair driving structure, a disc brake unit is further included, and the disc brake unit is coupled to the wheel hub.
依據前述之輪椅驅動結構的複數實施例,其中,驅動桿單元更包含一無線控制器,其啟閉馬達單元。 According to several embodiments of the aforementioned wheelchair driving structure, the driving rod unit further includes a wireless controller, which activates and closes the motor unit.
10:輪椅驅動結構 10: Wheelchair drive structure
100:輪轂 100: Wheels
110:殼體 110: Shell
120:蓋件 120: Cover
200:中心軸組件 200: Center shaft assembly
210:第一棘爪 210: First Pawl
220:第二棘爪 220: Second pawl
230:主軸 230: Spindle
231、232:開孔 231, 232: Opening
240:切換軸 240: switch axis
241:第一太陽齒輪限制槽 241: The first sun gear limiting groove
242:第二太陽齒輪限制槽 242: The second sun gear limiting groove
243:第一行星臂限制槽 243: The first planetary arm limiting groove
244:第二行星臂限制槽 244: The second planetary arm limiting groove
411:馬達外殼 411: Motor housing
4111:帶動齒 4111: Drive tooth
420:減速齒輪組 420: Reduction gear set
421:第一減速齒輪 421: First reduction gear
422:第二減速齒輪 422: Second reduction gear
500:驅動桿單元 500: Drive rod unit
510:轉向輪組件 510: Steering Wheel Assembly
511:主驅動齒輪 511: Main drive gear
512:第一轉向齒輪 512: First steering gear
513:第二轉向齒輪 513: Second steering gear
514:轉向盤 514: Steering Wheel
5141:限位銷 5141: Limit pin
515:固定盤 515: Fixed disk
5151、5152、5153:開孔 5151, 5152, 5153: Opening
245:端面 245: End face
300:行星齒輪組 300: Planetary gear set
310:太陽齒輪 310: Sun Gear
320:行星齒輪 320: Planetary gear
330:環齒輪 330: Ring Gear
340:行星臂 340: Planetary Arm
400:馬達單元 400: Motor unit
410:輪轂馬達 410: Hub Motor
516:單向軸承 516: one-way bearing
520:推桿 520: putter
521:連結桿 521: connecting rod
522:上桿部 522: Upper stem
523:下桿部 523: Lower stem
524:快拆座管束 524:Quick release seat tube bundle
530:傳動輪 530: Transmission wheel
540:無線控制器 540: Wireless Controller
600:碟煞單元 600: Disc brake unit
第1圖繪示依照本發明一實施例之一種輪椅驅動結構的立體示意圖; FIG. 1 is a three-dimensional schematic diagram of a wheelchair driving structure according to an embodiment of the present invention;
第2圖繪示第1圖實施例之輪椅驅動結構的***示意圖; Fig. 2 is an exploded schematic view of the wheelchair driving structure of the embodiment of Fig. 1;
第3圖繪示第1圖實施例之輪椅驅動結構之一切換軸的立體示意圖; FIG. 3 is a three-dimensional schematic view of a switching shaft of the wheelchair driving structure according to the embodiment of FIG. 1;
第4圖繪示第1圖實施例之輪椅驅動結構的一剖視示意圖; FIG. 4 is a schematic cross-sectional view of the wheelchair driving structure according to the embodiment of FIG. 1;
第5圖繪示第1圖實施例之輪椅驅動結構的另一剖視示意圖; Fig. 5 is another schematic cross-sectional view of the wheelchair driving structure according to the embodiment of Fig. 1;
第6圖繪示第1圖實施例之輪椅驅動結構的又一剖視示意圖; Fig. 6 is another schematic cross-sectional view of the wheelchair driving structure according to the embodiment of Fig. 1;
第7圖繪示第1圖實施例之輪椅驅動結構的一驅動桿單元的***示意圖; FIG. 7 is an exploded schematic view of a driving rod unit of the wheelchair driving structure according to the embodiment of FIG. 1;
第8圖繪示第1圖實施例之輪椅驅動結構的一側視示意圖; Fig. 8 is a schematic side view of the wheelchair driving structure according to the embodiment of Fig. 1;
第9圖繪示第1圖實施例之輪椅驅動結構的另一側視示意圖;以及 Fig. 9 is a schematic diagram of another side view of the wheelchair driving structure of the embodiment of Fig. 1; and
第10圖繪示第1圖實施例之輪椅驅動結構的又一側視示意圖。 FIG. 10 is another schematic side view of the wheelchair driving structure according to the embodiment of FIG. 1 .
以下將參照圖式說明本發明之實施例。為明確說明起見,許多實務上的細節將在以下敘述中一併說明。然而,閱讀者應瞭解到,這些實務上的細節不應用以限制本發明。也就是說,在本發明部分實施例中,這些實務上的細節是非必要的。此外,為簡化圖式起見,一些習知慣用的結構與元件在圖式中將以簡單示意的方式繪示;並且重複之元件將可能使用相同的編號或類似的編號表示。 Embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details are set forth in the following description. The reader should understand, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, to simplify the drawings, some well-known and conventional structures and elements will be shown in a simplified and schematic manner in the drawings; and repeated elements may be denoted by the same or similar numerals.
此外,本文中當某一元件(或機構或模組等)「連接」、「設置」或「耦合」於另一元件,可指所述元件是直接連接、直接設置或直接耦合於另一元件,亦可指某一元件是間接連接、間接設置或間接耦合於另一元件,意即,有其他元件介於所述元件及另一元件之間。而當有明示某一元件是「直接連接」、「直接設置」或「直接耦合」於另一元件時,才表示沒有其他元件介於所述元件及另一元件之間。而第一、第二、第三等用語只是用來描述不同元件或成分,而對元件/成分本身並無限制,因此,第一元件/成分亦可改稱為第二元件/成分。且本文中之元件/成分/機構/模組之組合非此領域中之一般周知、常規或習知之組合,不能以元件/成分/機構/模組本身是否為習知,來判定其組合關係是否容易被技術領域中之通常知識者輕易完成。 In addition, when a certain element (or mechanism or module, etc.) is "connected", "arranged" or "coupled" to another element herein, it may mean that the element is directly connected, directly arranged or directly coupled to another element , can also mean that an element is indirectly connected, indirectly arranged or indirectly coupled to another element, that is, there are other elements interposed between the element and the other element. When it is expressly stated that an element is "directly connected", "directly arranged" or "directly coupled" to another element, it means that no other element is interposed between the said element and the other element. The terms first, second, and third are only used to describe different elements or components, and do not limit the elements/components themselves. Therefore, the first element/component may also be renamed as the second element/component. Moreover, the combination of elements/components/mechanisms/modules in this article is not a generally known, conventional or conventional combination in this field, and whether the components/components/mechanisms/modules themselves are known to determine whether their combination relationship is not Easily accomplished by those of ordinary knowledge in the technical field.
請參閱第1圖及第2圖,其中第1圖繪示依照本發明一實施例之一種輪椅驅動結構10的立體示意圖,第2圖繪示第1圖實施例之輪椅驅動結構10的***示意圖。輪椅驅
動結構10設置於一輪椅(未繪示)的一輪子(未繪示)上且包含一輪轂100、一中心軸組件200、一行星齒輪組300、一馬達單元400及一驅動桿單元500。
Please refer to FIG. 1 and FIG. 2, wherein FIG. 1 is a three-dimensional schematic diagram of a
中心軸組件200位於輪轂100內,行星齒輪組300位於輪轂100內且包含一太陽齒輪310、一環齒輪330、至少一行星齒輪320及一行星臂340。太陽齒輪310套設於中心軸組件200,環齒輪330套設於中心軸組件200且與輪轂100固接,前述至少一行星齒輪320囓接於太陽齒輪310及環齒輪330之間,行星臂340樞接於前述至少一行星齒輪320。馬達單元400位於輪轂100內且耦合於行星臂340,驅動桿單元500連動太陽齒輪310。其中,中心軸組件200作動以選擇性地阻止太陽齒輪310或行星臂340相對中心軸組件200轉動。
The
藉此,當中心軸組件200對太陽齒輪310限位時,由馬達單元400帶動輪轂100轉動;反之,當中心軸組件200對行星臂340限位時,由驅動桿單元500帶動輪轂100轉動,進而具有結構簡化之優點。
Thereby, when the
輪轂100包含殼體110及蓋件120,殼體110包含一容置空間(未標示)供行星齒輪組300及馬達單元400容設,蓋件120則連接於殼體110的一端。
The
行星齒輪組300中,行星齒輪320的數量為三,然不以此限制本發明。在結構配置上,太陽齒輪310位於中央且包含外齒(未標示),三行星齒輪320樞設於行星臂340上,且三行星齒輪320環設於太陽齒輪310的外側以囓接於
太陽齒輪310的外齒。環齒輪330包含複數內齒(未標示)以供三行星齒輪320囓接,且環齒輪330可以螺鎖於輪轂100上以與輪轂100同動。
In the planetary gear set 300, the number of the
馬達單元400可包含一減速齒輪組420及一輪轂馬達410,減速齒輪組420與行星臂340連動,輪轂馬達410連接帶動減速齒輪組420。更仔細地說,輪轂馬達410可包含一馬達外殼411連接於輪轂馬達410的外轉子(未標示),外轉子轉動可帶動馬達外殼411轉動。馬達外殼411包含帶動齒4111,帶動齒4111可囓接於減速齒輪組420。減速齒輪組420包含第一減速齒輪421及第二減速齒輪422,第一減速齒輪421與第二減速齒輪422連動,且第一減速齒輪421受帶動齒4111帶動,第二減速齒輪422則囓接於行星臂340上的連接齒(未繪示)。是以,輪轂馬達410轉動時,可帶動馬達外殼411,以連動第一減速齒輪421、第二減速齒輪422及行星臂340轉動。
The
中心軸組件200可包含一主軸230、一切換軸240、一第一棘爪210及一第二棘爪220。主軸230包含一套管部(未標示),且套管部包含二開孔231、232間隔排列,切換軸240可轉動地插設於套管部內,第一棘爪210可動地位於開孔231內且選擇性地耦合於太陽齒輪310,第二棘爪220可動地位於開孔232內且選擇性地耦合於行星臂340。其中,切換軸240被作動使第一棘爪210與太陽齒輪310耦合時,阻止太陽齒輪310相對中心軸組件200轉動;切換軸
240被作動使第二棘爪220與行星臂340耦合時,阻止行星臂340相對中心軸組件200轉動。
The
請參閱第3圖,並請一併參閱第2圖,其中第3圖繪示第1圖實施例之輪椅驅動結構10之一切換軸240的一立體示意圖。切換軸240可包含一第一太陽齒輪限制槽241、一第二太陽齒輪限制槽242、一第一行星臂限制槽243以及一第二行星臂限制槽244。第二太陽齒輪限制槽242與第一太陽齒輪限制槽241相鄰,第一行星臂限制槽243與第二太陽齒輪限制槽242沿切換軸240的一軸向(未標示)排列,第二行星臂限制槽244與第一行星臂限制槽243相鄰。其中,切換軸240被作動以於一第一位置、一第二位置及一第三位置切換,當切換軸240位於第一位置時,第一棘爪210與第一太陽齒輪限制槽241對位,以使第一棘爪210與太陽齒輪310分離,此時僅允許驅動桿單元500帶動太陽齒輪310相對中心軸組件200轉動;當切換軸240位於第二位置時,第一棘爪210與第二太陽齒輪限制槽242對位且第二棘爪220與第一行星臂限制槽243對位,以使第一棘爪210與太陽齒輪310分離,且使第二棘爪220與行星臂340分離,此時允許馬達單元400帶動行星臂340及允許驅動桿單元500帶動太陽齒輪310相對中心軸組件200轉動;當切換軸240位於第三位置時,第二棘爪220與第二行星臂限制槽244對位,以使第二棘爪220與行星臂340分離,此時僅允許馬達單元400帶動行星臂340相對中心軸組件200轉動。
Please refer to FIG. 3 , and please refer to FIG. 2 , wherein FIG. 3 is a three-dimensional schematic diagram of a switching
仔細而言,中心軸組件200穿設於輪轂100的中心線,套管部的內部呈中空,二開孔231、232與套管部的內部連通,且開孔231中心與開孔232中心的連線平行於切換軸240的軸向。為了配合第一棘爪210及第二棘爪220,太陽齒輪310可包含複數內齒(未標示)供第一棘爪210囓合,且行星臂340亦可包含複數內齒(未標示)供第二棘爪220囓合。
Specifically, the
當第一棘爪210與第一太陽齒輪限制槽241或第二太陽齒輪限制槽242對位時,第一棘爪210會滑落入第一太陽齒輪限制槽241或第二太陽齒輪限制槽242內,使第一棘爪210與太陽齒輪310分離;反之,當第一棘爪210未與第一太陽齒輪限制槽241或第二太陽齒輪限制槽242對位時,第一棘爪210被切換軸240的表面頂起(切換軸240表面高於第一太陽齒輪限制槽241或第二太陽齒輪限制槽242的槽面),故可與太陽齒輪310囓合。類似地,第二棘爪220與第一行星臂限制槽243及第二行星臂限制槽244之關係,與第一棘爪210與第一太陽齒輪限制槽241及第二太陽齒輪限制槽242相同,不再贅述。藉此,透過轉動切換軸240,可改變太陽齒輪310及行星臂340與中心軸組件200的耦合關係。
When the
第一太陽齒輪限制槽241與切換軸240之端面245間的距離,相等於第二太陽齒輪限制槽242與切換軸240之端面245間的距離。第一行星臂限制槽243與切換軸240之端面245間的距離,相等於第二行星臂限制槽244與
切換軸240之端面245間的距離。第一行星臂限制槽243與切換軸240之端面245間的距離,小於第一太陽齒輪限制槽241與切換軸240之端面245間的距離,且第二行星臂限制槽244與第一太陽齒輪限制槽241並未對齊。藉此,透過第一太陽齒輪限制槽241、第二太陽齒輪限制槽242、第一行星臂限制槽243及第二行星臂限制槽244的位置關係,可在轉動切換軸240時,僅固定太陽齒輪310或行星臂340。
The distance between the first sun
在第1至2圖的實施例中,驅動桿單元500可包含一傳動輪530、一轉向輪組件510及一推桿520。傳動輪530連接太陽齒輪310,轉向輪組件510選擇性地耦合於傳動輪530,推桿520連接轉向輪組件510。其中,當轉向輪組件510耦合於傳動輪530時,推桿520被作動可帶動傳動輪530轉動,以下將先描述行星齒輪組300的作動狀態,而驅動桿單元500的其他細節會於後面再詳述。
In the embodiment shown in FIGS. 1 to 2 , the driving
請參閱第4圖,並配合參閱第2、3圖,其中第4圖繪示第1圖實施例之輪椅驅動結構10的一剖視示意圖。在第4圖中,切換軸240是位於第一位置,此時第一棘爪210與第一太陽齒輪限制槽241對位,以使第一棘爪210與太陽齒輪310分離,太陽齒輪310的轉動未被限制;且由於第二棘爪220未與第一行星臂限制槽243或第二行星臂限制槽244對位,故第二棘爪220與行星臂340囓合,進而限制行星臂340相對切換軸240轉動。
Please refer to FIG. 4 together with FIGS. 2 and 3 , wherein FIG. 4 is a schematic cross-sectional view of the
在此情況下,當使用者推動驅動桿單元500時,由於太陽齒輪310未被限位,故可受驅動桿單元500驅
動旋轉,以帶動行星齒輪320。行星齒輪320受連動後可相對行星臂340自轉,最終使環齒輪330及輪轂100轉動,此為推桿驅動模式。
In this case, when the user pushes the driving
請參閱第5圖,並配合參閱第2、3圖,其中第5圖繪示第1圖實施例之輪椅驅動結構10的另一剖視示意圖。在第5圖中,切換軸240是位於第二位置,此時第一棘爪210與第二太陽齒輪限制槽242對位,以使第一棘爪210與太陽齒輪310分離,太陽齒輪310的轉動未被限制;且由於第二棘爪220與第一行星臂限制槽243對位,故第二棘爪220與行星臂340分離,行星臂340的轉動未被限制。
Please refer to FIG. 5 together with FIGS. 2 and 3 , wherein FIG. 5 shows another schematic cross-sectional view of the
此時,使用者可推動驅動桿單元500,由於太陽齒輪310未被限位,而能受驅動桿單元500驅動旋轉,以帶動行星齒輪320;同時,啟動馬達單元400,使馬達單元400帶動行星臂340轉動。是以,行星齒輪320受太陽齒輪310連動後可相對行星臂340自轉,且行星齒輪320同時被行星臂340帶動繞太陽齒輪310公轉,最終使環齒輪330及輪轂100轉動,此為混合動力驅動模式,且其轉速會大於推桿驅動模式時的轉速。
At this time, the user can push the driving
請參閱第6圖,並配合參閱第2、3圖,其中第6圖繪示第1圖實施例之輪椅驅動結構10的又一剖視示意圖。在第6圖中,切換軸240是位於第三位置,此時第一棘爪210未與第一太陽齒輪限制槽241或第二太陽齒輪限制槽242對位,故第一棘爪210與太陽齒輪310囓合,進而限制太陽齒輪310相對切換軸240轉動;且由於第二棘爪220與
第二行星臂限制槽244對位,故第二棘爪220與行星臂340分離,行星臂340的轉動未被限制。
Please refer to FIG. 6 , together with FIGS. 2 and 3 , wherein FIG. 6 is another schematic cross-sectional view of the
此時,使用者可啟動馬達單元400,使馬達單元400帶動行星臂340轉動,而行星齒輪320受行星臂340帶動會相對太陽齒輪310自轉及繞太陽齒輪310公轉,以連動環齒輪330及輪轂100轉動,此為馬達驅動模式,且其轉速大於推桿驅動模式時的轉速,但小於混合動力驅動模式的轉速。
At this time, the user can activate the
在第1圖至第6圖的實施例中,輪椅驅動結構10可更包含一碟煞單元600,碟煞單元600耦合於輪轂100。當碟煞單元600作動時,輪轂100可被停止,而具有剎車作用。
In the embodiment shown in FIGS. 1 to 6 , the
請參閱第7圖,第7圖繪示第1圖實施例之輪椅驅動結構10的一驅動桿單元500的***示意圖。在此要特別說明的是,為了圖式的簡潔,推桿520的部分元件(上桿部522、下桿部523及快拆座管束524)以及無線控制器540僅在第7圖中繪示,而在其他圖中省略,然不以此限制本發明。如第7圖所示,轉向輪組件510可包含一主驅動齒輪511、一第一轉向齒輪512、一第二轉向齒輪513以及一轉向盤514,主驅動齒輪511受推桿520驅動轉動,第一轉向齒輪512囓接於主驅動齒輪511,第二轉向齒輪513囓接於第一轉向齒輪512,轉向盤514連接第一轉向齒輪512及第二轉向齒輪513,且轉向盤514帶動第一轉向齒輪512及第二轉向齒輪513位移。轉向盤514切換於一前進位置及一後
退位置,當轉向盤514位於前進位置時,第一轉向齒輪512囓接於傳動輪530;當轉向盤514位於後退位置時,第二轉向齒輪513囓接於傳動輪530。
Please refer to FIG. 7 , which is an exploded schematic view of a driving
具體而言,推桿520可供使用者操作,而在操作上,是透過不斷地推動及復位推桿520來達到驅動傳動輪530的目的,為此,推桿520可包含一連結桿521,連結桿521透過單向軸承516連接於主驅動齒輪511。藉此,推桿520僅可單向驅動主驅動齒輪511,而在推桿520復位時不會帶動主驅動齒輪511轉動,以避免逆轉致使輪椅回復至原地而無法前進。推桿520可更包含一上桿部522、一下桿部523及一快拆座管束524,下桿部523連接於連結桿521,上桿部522可套設於下桿部523,快拆座管束524用以固定上桿部522及下桿部523間的相對距離。藉此,可因應不同使用者身型調整適合的推桿520長度,且可增加推桿520的徑向長度讓使用者有良好的操作舒適度。
Specifically, the
請參閱第8圖,並請一併參閱第7圖,其中第8圖繪示第1圖實施例之輪椅驅動結構10的一側視示意圖。轉向輪組件510可更包含一固定盤515,固定盤515一端供主驅動齒輪511樞設,另一端供切換軸240樞設,且固定盤515上包含三開孔5151、5152、5153,各個開孔5151、5152、5153供轉向盤514的限位銷5141限位。在第8圖中,轉向盤514的限位銷5141限位於開孔5151,此時轉向盤514位於前進位置,推桿520被推動後,帶動主驅動齒輪511、第一轉向齒輪512連動傳動輪530,輪椅可往前進。
Please refer to FIG. 8 , and please refer to FIG. 7 , wherein FIG. 8 is a schematic side view of the
請參閱第9圖,並請一併參閱第7圖,其中第9圖繪示第1圖實施例之輪椅驅動結構10的另一側視示意圖。轉向盤514被轉動使限位銷5141改限位於開孔5152,此時轉向盤514位於後退位置,推桿520被推動後,帶動主驅動齒輪511、第一轉向齒輪512、第二轉向齒輪513連動傳動輪530,輪椅可往後退。
Please refer to FIG. 9 , and please refer to FIG. 7 , wherein FIG. 9 is a schematic diagram of another side view of the
請參閱第10圖,其中第10圖繪示第1圖實施例之輪椅驅動結構10的又一側視示意圖。轉向盤514可更切換至一空檔位置,當轉向盤514位於空檔位置時,第一轉向齒輪512及第二轉向齒輪513均與傳動輪530分離。如第10圖所示,此時轉向盤514被轉動使限位銷5141改限位於開孔5153,由於第一轉向齒輪512及第二轉向齒輪513均與傳動輪530分離,故推動推桿520時,傳動輪530不會產生連動。
Please refer to FIG. 10 , wherein FIG. 10 is another schematic side view of the
請復參閱第7圖,並請一併參閱第2圖,為了更方便地操控輪椅驅動結構10,驅動桿單元500可更包含一無線控制器540,以啟閉馬達單元400之輪轂馬達410,無線控制器540可設置於上桿部522,且可更進行輪轂馬達410的調速,然本發明不限於此。
Please refer to FIG. 7 and FIG. 2 together. In order to control the
由上述之實施例可知,本發明之輪椅驅動結構具有下列優點。 As can be seen from the above-mentioned embodiments, the wheelchair driving structure of the present invention has the following advantages.
1.相較於一般手輪式驅動,推桿驅動方式可降低使用者手腕關節部位的韌帶壓迫而產生慢性的運動傷害,且其省力效果更能滿足使用者於更多地形狀況使用。 1. Compared with the general hand wheel drive, the push rod drive method can reduce the compression of the ligaments of the user's wrist joints and cause chronic sports injuries, and its labor-saving effect is more suitable for the user to use in more terrain conditions.
2.輪椅驅動結構已模組化,而能直接裝設於一般手動輪椅的支柱上,同時不影響輪椅的收摺,具有應用方便之優點。 2. The wheelchair driving structure has been modularized, and can be directly installed on the pillars of general manual wheelchairs without affecting the folding of the wheelchair, which has the advantage of convenient application.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何熟習此技藝者,在不脫離本發明之精神和範圍內,當可作各種之更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the appended patent application.
10‧‧‧輪椅驅動結構 10‧‧‧Wheelchair drive structure
110‧‧‧殼體 110‧‧‧Shell
120‧‧‧蓋件 120‧‧‧Cover
200‧‧‧中心軸組件 200‧‧‧Central shaft assembly
210‧‧‧第一棘爪 210‧‧‧First Pawl
220‧‧‧第二棘爪 220‧‧‧Second pawl
230‧‧‧主軸 230‧‧‧Spindle
231、232‧‧‧開孔 231, 232‧‧‧Opening
340‧‧‧行星臂 340‧‧‧Planetary arm
400‧‧‧馬達單元 400‧‧‧motor unit
410‧‧‧輪轂馬達 410‧‧‧Wheel motor
411‧‧‧馬達外殼 411‧‧‧Motor Housing
4111‧‧‧帶動齒 4111‧‧‧Drive tooth
420‧‧‧減速齒輪組 420‧‧‧Reduction gear set
421‧‧‧第一減速齒輪 421‧‧‧First reduction gear
422‧‧‧第二減速齒輪 422‧‧‧Second reduction gear
240‧‧‧切換軸 240‧‧‧Switching axis
300‧‧‧行星齒輪組 300‧‧‧Planetary gear set
310‧‧‧太陽齒輪 310‧‧‧Sun Gear
320‧‧‧行星齒輪 320‧‧‧Planetary gear
330‧‧‧環齒輪 330‧‧‧Ring gear
500‧‧‧驅動桿單元 500‧‧‧Drive Lever Unit
510‧‧‧轉向輪組件 510‧‧‧Steering wheel assembly
520‧‧‧推桿 520‧‧‧Putter
530‧‧‧傳動輪 530‧‧‧Transmission wheel
600‧‧‧碟煞單元 600‧‧‧ Disc Brake Unit
Claims (8)
Priority Applications (1)
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TW109100239A TWI761747B (en) | 2020-01-03 | 2020-01-03 | Wheel chair driving structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW109100239A TWI761747B (en) | 2020-01-03 | 2020-01-03 | Wheel chair driving structure |
Publications (2)
Publication Number | Publication Date |
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TW202126276A TW202126276A (en) | 2021-07-16 |
TWI761747B true TWI761747B (en) | 2022-04-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW109100239A TWI761747B (en) | 2020-01-03 | 2020-01-03 | Wheel chair driving structure |
Country Status (1)
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TW (1) | TWI761747B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM554787U (en) * | 2017-09-11 | 2018-02-01 | Nova Orthopedic & Rehabilitation Appliance Inc | Collapsible wheelchair with hub motor |
TW201905358A (en) * | 2017-06-26 | 2019-02-01 | 國立雲林科技大學 | Built-in speed-shifting mechanism of medical care assistive device for being coupled to vehicle wheels to generate different power transmission paths according to the requirement of an operator so as to drive the vehicle wheels to move in various terrains |
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2020
- 2020-01-03 TW TW109100239A patent/TWI761747B/en active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201905358A (en) * | 2017-06-26 | 2019-02-01 | 國立雲林科技大學 | Built-in speed-shifting mechanism of medical care assistive device for being coupled to vehicle wheels to generate different power transmission paths according to the requirement of an operator so as to drive the vehicle wheels to move in various terrains |
TWM554787U (en) * | 2017-09-11 | 2018-02-01 | Nova Orthopedic & Rehabilitation Appliance Inc | Collapsible wheelchair with hub motor |
Also Published As
Publication number | Publication date |
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TW202126276A (en) | 2021-07-16 |
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