TWI726452B - Caster for a wheelchair - Google Patents
Caster for a wheelchair Download PDFInfo
- Publication number
- TWI726452B TWI726452B TW108138080A TW108138080A TWI726452B TW I726452 B TWI726452 B TW I726452B TW 108138080 A TW108138080 A TW 108138080A TW 108138080 A TW108138080 A TW 108138080A TW I726452 B TWI726452 B TW I726452B
- Authority
- TW
- Taiwan
- Prior art keywords
- shaft
- wheel
- sleeve
- abutting
- wheelchair
- Prior art date
Links
Images
Landscapes
- Steering Controls (AREA)
Abstract
Description
本發明係關於一種輪椅輔助輪,尤其是一種輔助回正的輪椅輔助輪。 The present invention relates to a wheelchair auxiliary wheel, in particular to a wheelchair auxiliary wheel for assisting back-up.
習知之輪椅主要係倚靠使用者自身施力使輪椅轉向及前進,尤其輪椅使用者通常為體力不佳的年長者或病患,因此在控制輪椅由轉向後的回正上,更需要耗費較大的體力。有鑑於此,習知之輪椅仍有加以改善之必要。 Conventional wheelchairs mainly rely on the user's own force to make the wheelchair turn and move forward. In particular, wheelchair users are usually elderly or patients with poor physical strength. Therefore, it is more expensive to control the wheelchair to return after turning. Physical strength. In view of this, the conventional wheelchair still needs to be improved.
為解決上述問題,本發明的目的是提供一種輪椅輔助輪,係可以輔助輪椅回正者。 In order to solve the above problems, the purpose of the present invention is to provide a wheelchair auxiliary wheel, which can assist the wheelchair to return to the right position.
本發明全文所述方向性或其近似用語,例如「前」、「後」、「左」、「右」、「上(頂)」、「下(底)」、「內」、「外」、「側面」等,主要係參考附加圖式的方向,各方向性或其近似用語僅用以輔助說明及理解本發明的各實施例,非用以限制本發明。 The directionality described in the full text of the present invention or its similar terms, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings, and the terms of directionality or similar terms are only used to help explain and understand the embodiments of the present invention, and are not used to limit the present invention.
本發明全文所記載的元件及構件使用「一」或「一個」之量詞,僅是為了方便使用且提供本發明範圍的通常意義;於本發明中應被解讀為包括一個或至少一個,且單一的概念也包括複數的情況,除非其明顯意指其他 意思。 The elements and components described in the full text of the present invention use the quantifiers "one" or "one" for convenience and to provide the general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and single The concept of also includes the plural, unless it clearly implies other meaning.
本發明全文所述「結合」、「組合」或「組裝」等近似用語,主要包含連接後仍可不破壞構件地分離,或是連接後使構件不可分離等型態,係本領域中具有通常知識者可以依據欲相連之構件材質或組裝需求予以選擇者。 Approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of the present invention mainly include the types that can be separated without destroying the components after being connected, or the components cannot be separated after being connected, which are common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.
本發明的輪椅輔助輪,包含:一軸套,具有貫通的一滑移道,一抵接件可伸縮地位於該滑移道,該抵接件具有相對的一抵接部及一伸縮部;一轉向軸,具有一軸接部可旋轉地結合於該軸套,該軸接部徑向方向上的周面具有一導正槽,該導正槽對位於該軸套之滑移道,該導正槽抵接於該抵接件之抵接部以壓縮該伸縮部,該導正槽之槽口具有相對的一第一端及一第二端,該軸接部之軸心到該導正槽的半徑,係形成由該第一端及該第二端分別朝該第一端及該第二端之間遞減;及一輪組件,具有一輪架,該輪架連接於該轉向軸並樞接一輪體。 The wheelchair auxiliary wheel of the present invention includes: a shaft sleeve with a penetrating sliding path, an abutting member telescopically located on the sliding path, and the abutting member having a relatively abutting portion and a telescopic portion; The steering shaft has a shaft joint rotatably coupled to the shaft sleeve. The circumferential surface of the shaft joint in the radial direction has a guide groove. The guide groove is located on the sliding path of the shaft sleeve. The groove abuts against the abutting part of the abutting piece to compress the telescopic part, the notch of the guiding groove has a first end and a second end opposite to each other, and the axis of the shaft connecting part is connected to the guiding groove The radius of is formed from the first end and the second end respectively decreasing toward the first end and the second end; and a wheel assembly having a wheel frame connected to the steering shaft and pivotally connected to a wheel body.
據此,本發明的輪椅輔助輪,係可以裝設於輪椅,藉由該軸接部徑向方向上的周面具有該導正槽,且該軸接部之軸心到該導正槽的半徑,係形成由該導正槽的第一端及該第二端分別朝該導正槽之中心部遞減,以使該軸套之推抵件抵接於該導正槽之第一端或該第二端時係形成最大推抵力,並可以產生朝向該中心部滑移的一力矩,當輪椅轉向完成而欲回復直行時,使用者即可藉由該力矩的輔助,輕易地帶動該軸接部旋轉以使該推抵件重新回到推抵該中心部的位置,以使該軸接部之輪體回正,達到減輕使用者負擔的功效。 Accordingly, the wheelchair auxiliary wheel of the present invention can be installed on a wheelchair. The circumferential surface of the shaft connecting portion in the radial direction has the guiding groove, and the shaft center of the shaft connecting portion reaches the center of the guiding groove. The radius is formed from the first end and the second end of the guide groove respectively decreasing toward the center of the guide groove, so that the thrust piece of the sleeve abuts against the first end of the guide groove or The second end time system forms the maximum thrust force, and can generate a moment of sliding toward the center part. When the wheelchair is turned and wants to go straight back, the user can easily drive the wheel with the assistance of the moment. The shaft connecting part rotates to make the pushing member return to the position of pushing against the central part, so that the wheel body of the shaft connecting part returns to the center, achieving the effect of reducing the burden on the user.
其中,該滑移道係於該軸套的內周壁形成一開口,該抵接件之伸縮部係具有一支撐件及一彈性件,該伸縮部之支撐件係固定於該滑移道相對該開口的一端,該伸縮部之彈性件的兩端係分別抵接於該支撐件及該抵接 部。如此,可以藉由該彈性件的彈性復位力而抵撐於該轉向軸,以產生朝向該中心部滑移的一力矩,具有輔助帶動該軸接部旋轉以使該推抵件重新回到推抵該中心部的位置的效果。 Wherein, the sliding path is formed with an opening on the inner peripheral wall of the shaft sleeve, the telescopic part of the abutting member has a support part and an elastic part, and the support part of the telescopic part is fixed to the sliding path relative to the One end of the opening, the two ends of the elastic member of the telescopic part are respectively abutted against the support member and the abutment unit. In this way, the steering shaft can be supported by the elastic restoring force of the elastic member to generate a moment that slides toward the center portion, and it can assist in driving the shaft connection portion to rotate so that the pushing member returns to the pushing member. The effect of reaching the center position.
其中,該抵接部係與該支撐件之間連接一定位柱,使該定位柱相對於該抵接部產生縮徑,以使該定位柱的外周面結合該伸縮部之彈性件。如此,可以使該彈性件穩定地於該定位柱外周被壓縮及彈性複位而不會晃動,具有提升該抵接件於該滑移道內伸縮順暢度的功效。 Wherein, a positioning post is connected between the abutting part and the support, so that the positioning post is reduced in diameter relative to the abutting part, so that the outer peripheral surface of the positioning post is combined with the elastic part of the telescopic part. In this way, the elastic member can be stably compressed and elastically reset on the outer periphery of the positioning column without shaking, and has the effect of improving the smoothness of the abutment member in the sliding path.
其中,該軸套的外周壁具有用以連接於輪椅架體的一連接部,該軸套的滑移道係設於該連接部,並貫通該連接部及該軸套的內周壁。如此,可以使該軸套的其他部位形成相對於該連接部較薄的壁厚,以減少不必要的材料消耗,具有輕量化的作用。 Wherein, the outer peripheral wall of the shaft sleeve has a connecting part for connecting to the wheelchair frame, and the sliding path of the shaft sleeve is arranged at the connecting part and penetrates the connecting part and the inner peripheral wall of the shaft sleeve. In this way, other parts of the sleeve can be formed with a thinner wall thickness relative to the connecting part, so as to reduce unnecessary material consumption and have the effect of lightening.
其中,該導正槽之一槽底面具有一中心部,該軸接部之軸心到該中心部形成一最小半徑。如此,可以使該第一端及該第二端對該抵接件形成之推抵力,大於該中心部對該抵接件形成之推抵力,可以產生朝向該中心部滑移的一力矩,具有輔助帶動該軸接部旋轉以使該推抵件重新回到推抵該中心部的位置的效果。 Wherein, a groove bottom of the guiding groove has a center portion, and the axis of the shaft connecting portion forms a minimum radius to the center portion. In this way, the pushing force formed by the first end and the second end against the abutting element can be greater than the pushing force formed by the central portion against the abutting element, and a moment of sliding toward the central portion can be generated , It has the effect of assisting the rotation of the shaft connecting part so that the pushing member can return to the position of pushing against the central part.
其中,該中心部具有一定位孔。如此,具有確保該抵接件可以抵接於該導正槽的中心部的效果。 Wherein, the central part has a positioning hole. In this way, there is an effect of ensuring that the abutting member can abut against the center portion of the guiding groove.
其中,該軸套具有一輔助滑移道,該輔助滑移道係與該滑移道相對,一輔助定位件可伸縮地位於該輔助滑移道。如此,該輔助定位件可以抵撐於該轉向軸,具有對該轉向軸產生定位的功效。 Wherein, the shaft sleeve has an auxiliary sliding path, the auxiliary sliding path is opposite to the sliding path, and an auxiliary positioning member is telescopically located on the auxiliary sliding path. In this way, the auxiliary positioning member can support the steering shaft, and has the function of positioning the steering shaft.
其中,該軸接部相對於該定位孔的一端,具有一輔助定位孔。如此,具有確保該抵接件可以抵接於該導正槽的中心部的效果。 Wherein, one end of the shaft connection portion opposite to the positioning hole has an auxiliary positioning hole. In this way, there is an effect of ensuring that the abutting member can abut against the center portion of the guiding groove.
其中,該軸接部之軸心到該第一端及該第二端的半徑,係等於 該軸接部之軸心到該軸接部之外周面的半徑。如此,可以由該軸接部徑向上的半徑差形成該導正槽,具有製造方便的作用。 Wherein, the radius from the shaft center of the shaft connecting portion to the first end and the second end is equal to The radius from the shaft center of the shaft joint to the outer peripheral surface of the shaft joint. In this way, the guide groove can be formed by the radial difference of the shaft connecting portion, which has the effect of convenient manufacturing.
其中。該輪架具有互相樞接的一第一支架及一第二支架以形成一樞接部,該第一支架連接於該轉向軸,該第二支架連接於該輪體,該第二支架具有由該樞接部往該輪體延伸的一滑軌,一連動件的一滑移端可滑移地結合於該滑軌,該連動件相對該滑移端的一樞接端樞接於該第一支架之樞接部與該轉向軸之間,該輪架具有一彈性件,該輪架之彈性件的兩端係分別連接於該樞接部及該連動件之滑移端。如此,可以提供該輪體常時抵接於地面的力量,而貼合於地面的作用。 among them. The wheel frame has a first frame and a second frame that are pivotally connected to each other to form a pivot part. The first frame is connected to the steering shaft, the second frame is connected to the wheel body, and the second frame has a A sliding rail extending from the pivotal portion to the wheel body, a sliding end of a linkage member is slidably coupled to the sliding rail, and the linkage member is pivotally connected to the first sliding end relative to a pivotal end of the sliding end Between the pivotal portion of the bracket and the steering shaft, the wheel frame has an elastic member, and two ends of the elastic member of the wheel frame are respectively connected to the pivotal portion and the sliding end of the linkage member. In this way, it is possible to provide the force that the wheel body always abuts against the ground, and the effect of being attached to the ground.
1:軸套 1: Bushing
1a:第一開口 1a: first opening
1b:第二開口 1b: second opening
11:軸承組件 11: Bearing assembly
11a:內環 11a: inner ring
11b:外環 11b: Outer ring
12:抵接肩部 12: Abut the shoulders
13:蓋體 13: Lid
14:滑移道 14: slipway
141:開口 141: Open
15:抵接件 15: abutment
15a:抵接部 15a: Abutment part
15b:伸縮部 15b: Telescopic part
151:滾動件 151: Rolling pieces
152:支撐件 152: Support
153:彈性件 153: Elastic
154:定位柱 154: Positioning column
16:輔助滑移道 16: Auxiliary slipway
161:開口 161: open
162:輔助定位件 162: auxiliary positioning parts
162a:輔助抵接部 162a: Auxiliary abutment part
162b:輔助伸縮部 162b: Auxiliary telescopic part
163:輔助滾動件 163: auxiliary rolling element
17:連接部 17: Connection part
171:鎖固件 171: Lock firmware
2:轉向軸 2: steering shaft
21:軸接部 21: Shaft joint
21a:軸管 21a: Shaft tube
21b:芯軸 21b: Mandrel
21c:限位環 21c: Limit ring
21d:檔止環 21d: gear stop ring
22:導正槽 22: guide groove
221:槽口 221: Notch
221a:第一端 221a: first end
221b:第二端 221b: second end
222:槽底面 222: groove bottom
223:中心部 223: Center
224:定位孔 224: positioning hole
225:輔助定位孔 225: auxiliary positioning hole
3:輪組件 3: Wheel assembly
31:輪架 31: Wheel frame
31a:第一支架 31a: first bracket
31b:第二支架 31b: second bracket
311:樞接部 311: Pivot
312:第一連接端 312: first connection end
313:第二連接端 313: second connection end
314:滑軌 314: Slide
32:輪體 32: Wheel center
33:連動件 33: Linkage
33a:滑移端 33a: Sliding end
33b:樞接端 33b: pivot end
331:彈性件 331: Elastic
S:容室 S: Room
C:輪椅架體 C: Wheelchair frame
〔第1圖〕本發明一較佳實施例的分解立體圖。 [Figure 1] An exploded perspective view of a preferred embodiment of the present invention.
〔第2圖〕本發明一較佳實施例的側剖圖。 [Figure 2] A side sectional view of a preferred embodiment of the present invention.
〔第3圖〕沿第2圖的A-A線剖面圖。 [Figure 3] A cross-sectional view along the line A-A in Figure 2.
〔第4圖〕本發明一較佳實施例之裝設於一輪椅示意圖。 [Figure 4] A schematic diagram of a preferred embodiment of the present invention installed in a wheelchair.
〔第5圖〕本發明輪椅輔助輪轉向時該抵接件抵接於軸接部兩端之示意圖。 [Figure 5] A schematic diagram of the abutment member abutting on both ends of the shaft joint when the auxiliary wheel of the wheelchair of the present invention is steered.
〔第6圖〕本發明輪椅輔助輪回正時該抵接件抵接於該中心部示意圖。 [Figure 6] A schematic diagram of the abutting member abutting against the central part of the wheelchair auxiliary cycle timing of the present invention.
為讓本發明之上述及其他目的、特徵及優點能更明顯易懂,下文特舉本發明之較佳實施例,並配合所附圖式,作詳細說明如下:請參照第1、2圖所示,其係本發明輪椅輔助輪的一較佳實施例,係包含一軸套1、一轉向軸2及一輪組件3,該轉向軸2可旋轉地結合於
該軸套1,該輪組件3結合於該轉向軸2以隨著該轉向軸2旋轉。
In order to make the above and other objectives, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings: Please refer to Figures 1 and 2 As shown, it is a preferred embodiment of the wheelchair auxiliary wheel of the present invention, which includes a
該軸套1具有相對的一第一開口1a及一第二開口1b,該轉向軸2可以穿伸於該第一開口1a及該第二開口1b,以於該軸套1內進行旋轉,詳言之,該軸套1內可以藉由一軸承組件11結合於該轉向軸2,本實施例中,該軸承組件11可以為數個滾珠軸承,該數個滾珠軸承分別具有一內環11a及一外環11b,該內環11a可以結合於該轉向軸2,該外環11b可以結合於該軸套1,舉例而言,該外環11b可以緊配合於該軸套1之內壁面,或者,本實施例中,該軸套1能夠以徑差於內壁面形成朝向該第一開口1a的一抵接肩部12,該軸承組件11之外環11b係可以抵接於該抵接肩部12,藉此,該轉向軸2可以藉由該軸承組件11可旋轉地位於該軸套1內。另,該第一開口1a可以結合一蓋體13,該蓋體13可以對該軸套1形成封閉,以防止灰塵等異物進入。
The
該軸套1另具有貫通該軸套1的一滑移道14,該滑移道14係於該軸套1的內周壁形成一開口141,一抵接件15可伸縮地位於該滑移道14,以使該抵接件15係可以抵接於該轉向軸2,詳言之,該抵接件15具有相對的一抵接部15a及一伸縮部15b,該抵接部15a具有一滾動件151,該滾動件151可相對該抵接件15進行滾動,藉此,當該轉向軸2旋轉時,係可以帶動該滾動件151形成滾動,舉例而言,該滾動件151可以為與該轉向軸2之轉動方向平行設置的一滾輪,或者如本實施例中該滾動件151為可以進行任意方向的旋轉的一滾珠,藉此可以不用考慮設置方向,具有提升組裝便利性的效果。
The
該抵接件15之伸縮部15b係可以具有一支撐件152及一彈性件153,該支撐件152係可以固定於該滑移道14相對該開口141的一端,該彈性件153的兩端係分別抵接於該支撐件152及該抵接部15a,藉此,該抵
接部15a係可以被該轉向軸2推抵以壓縮該彈性件153,並藉由該彈性件153的彈性復位力而抵撐於該轉向軸2。本實施例中,該抵接部15a係與該支撐件152之間可以連接一定位柱154,該定位柱154的徑向截面積小於該抵接部15a的徑向截面積,使該定位柱154相對於該抵接部15a產生縮徑,以使該定位柱154的外周面係可以結合該彈性件153,另,該支撐件152具有對位於該定位柱154的一容室S,該抵接部15a被推抵時該定位柱154可以穿伸於該容室S,藉此可以使該彈性件153可以穩定地於該定位柱154外周被壓縮及彈性複位而不會晃動,具有提升該抵接件15於該滑移道14內伸縮順暢度的作用。
The
值得注意的是,該軸套1還可以具有一輔助滑移道16,該輔助滑移道16係與該滑移道14相對,即,該輔助滑移道16於該軸套1的內周壁形成一開口161,該開口161係與該滑移道14之開口141相對位,一輔助定位件162可伸縮地位於該輔助滑移道16,以使該輔助定位件162係可以抵接於該轉向軸2,以對該轉向軸2產生定位。詳言之,該輔助定位件162具有相對的一輔助抵接部162a及一輔助伸縮部162b,該輔助抵接部162a具有一輔助滾動件163,該輔助滾動件163可相對該輔助定位件162進行滾動,藉此,當該轉向軸2旋轉時,係可以帶動該輔助滾動件163形成滾動,同樣的,該輔助滾動件163為可以進行任意方向的旋轉的一滾珠,藉此可以不用考慮設置方向,具有提升組裝便利性的效果。該輔助伸縮部162b亦可以為一彈性件,並分別抵接於該輔助滾動件163及該輔助滑移道16的一封閉端,使該輔助抵接部162a係可以被該轉向軸2推抵以壓縮該彈性件,並藉由該彈性件的彈性復位力而抵撐於該轉向軸2。
It is worth noting that the
該軸套1還可以具有一連接部17,該連接部17係可以位於該軸套1的外周壁,用以將該軸套1經由一鎖固件171連接於一輪椅架體C,
該軸套1的滑移道14係可以設於該連接部17,並貫通該連接部17及該軸套1的內周壁,藉此,可以使該軸套1的其他部位形成相對於該連接部17較薄的壁厚,以減少不必要的材料消耗,具有輕量化的作用。惟,該軸套1亦可以具有足夠設置該滑移道14的壁厚,而將該滑移道14不設置於該連接部17,此為本領域人員可以瞭解,本發明在此不作贅述。
The
該轉向軸2具有一軸接部21,該軸接部21係可以作為一旋轉軸心,並能夠由該軸接部21可旋轉地結合於該軸套1,本實施例中,該軸接部21可以具有一軸管21a結合一芯軸21b,該軸管21a的外周可以結合於該軸承組件11之內環11a,較佳該軸管21a外周可以結合一限位環21c,該限位環21c係抵接於該軸承組件11以避免該軸承組件11產升晃動,該芯軸21b突伸於該軸管21a的自由端係可以具有一檔止環21d,以避免結合於該軸管21a外周的軸承組件11及該限位環21c由該自由端脫出,另,該軸接部21亦可以為一體成形的一軸桿,同樣能夠可旋轉地結合於該軸套1,本發明不予限制。
The steering
請續參照第2、3圖所示,該軸接部21徑向方向上的周面可以具有一導正槽22,該導正槽22對位於該軸套1內周壁的開口141,以使該抵接件15可以抵接於該導正槽22。詳言之,該導正槽22之槽口221具有相對的一第一端221a及一第二端221b,該抵接件15之抵接部15a可以隨著該轉向軸2旋轉滑移於該第一端221a及一第二端221b之間,以使該導正槽22可以壓縮該抵接件15之彈性件153,並受到該抵接件15的推抵。該軸接部21到該導正槽22的半徑,係形成由該第一端221a及該第二端221b分別朝該第一端221a及該第二端221b之間遞減,即,該彈性件153由該第一端221a或該第二端221b,到該導正槽22中心所受到的壓縮程度不同。
Please continue to refer to Figures 2 and 3, the circumferential surface of the
詳言之,該導正槽22之槽底面222具有一中心部223,該軸
接部21之軸心到該中心部223形成一最小半徑,藉此,該第一端221a及該第二端221b對該抵接件15形成之推抵力,係大於該中心部223對該抵接件15形成之推抵力。本實施例中,該中心部223可以具有一定位孔224,使該抵接部15a滑移至該中心部223時,可以卡抵於該定位孔224,藉此,可以確保該抵接件15可以抵接於該導正槽22的中心部223。同樣的,該軸接部21相對於該定位孔224的一端,可以具有一輔助定位孔225,該輔助定位孔225係可以用以供該輔助定位件162卡抵,以進一步確保該抵接件15可以抵接於該導正槽22的中心部223。另,該軸接部21之軸心到該第一端221a及該第二端211b的半徑,係可以等於該軸接部21之軸心到該軸接部21之外周面的半徑,即,該導正槽22之槽底面222係延伸至該槽口221的第一端221a及該第二端221b,藉此,可以由該軸接部21徑向上的半徑差形成該導正槽22,具有製造方便的作用。
In detail, the
該輪組件3可以連接於該轉向軸2之軸接部21,以隨著該軸接部21旋轉而轉動,本實施例中,該輪組件3可以具有連接該轉向軸2的一輪架31,該輪架31樞接一輪體32,該輪體32可以用以抵接於地面,以輔助輪椅移動,藉此,當輪椅轉向時係可以隨著該輪體32的轉向以帶動該轉向軸2相對該軸套1進行旋轉。
The
詳言之,該輪組件3之輪架31可以具有一第一支架31a及一第二支架31b,該第一支架31a及該第二支架31b係互相樞接,以使該輪架31形成一樞接部311,該第一支架31a遠離該樞接部311的一端具有一第一連接端312,該第一連接端312連接於該轉向軸2,而該第二支架31b遠離該樞接部311的一端具有一第二連接端313,該第二連接端313係用以樞接於該輪體32,且該樞接部311與該轉向軸2不同軸,且該輪體32係與該轉向軸2在軸向上相對位,藉此,使該輪架31可以呈ㄑ字型,以使該輪體32可以藉
由該輪架31之樞接部311,與該轉向軸2產生相對位移。
In detail, the
本實施例中,該第二支架31b係可以具有由該樞接部311往該第二連接端313延伸的一滑軌314,一連動件33的一滑移端33a可滑移地結合於該滑軌314,該連動件33相對該滑移端33a的一樞接端33b可以樞接於該第一支架31a之樞接部311與該第一連接端312之間,該連動件33另可以具有一彈性件331,該連動件33之彈性件331的兩端係分別連接於該樞接部311及該連動件33之滑移端33a,藉此,該連動件33之彈性件331係可以產生將該連動件33之滑移端33a,由該第二支架31b之第二連接端313拉至該樞接部311的拉力,並以反作用力帶動該第二支架31b以該樞接部311產生樞轉,使該輪體32朝遠離該轉向軸2的方向位移,藉此,當該輪體32行經過凹處之地面時,該輪體32係可以隨該凹處下降,又,當該輪體32行經過凸起之地面時,該輪體32可以隨該凸起上升,據此,可以提供該輪體32常時抵接於地面的力量,而貼合於地面,並隨著地面起伏產生緩衝的作用。
In this embodiment, the
請參照第4、5圖所示,據由前述結構,本發明輪椅輔助輪係可以裝設於該輪椅架體C,當輪椅轉向時,該輪組件3之輪體32係隨之轉向,並帶動該轉向軸2之軸接部21相對該軸套1旋轉,此時,該抵接件15之抵接部15a係根據該轉向軸2向左或向右旋轉,由該導正槽22之中心部223,朝該導正槽22的第一端221a或該第二端221b形成相對滑移,因為該轉向軸2的軸心到該導正槽22之半徑,係由該中心部223分別朝該第一端221a及該第二端221b漸增,即,該導正槽22之槽底面222對該抵接件15之彈性件153的壓縮力亦隨著該軸接部21旋轉,由該中心部223分別朝該第一端221a及該第二端221b漸增。
Please refer to Figures 4 and 5. According to the aforementioned structure, the wheelchair auxiliary wheel train of the present invention can be installed on the wheelchair frame C. When the wheelchair turns, the
請參照第6圖所示,而當輪椅轉回復直行時,該軸接部21相對該軸套1旋轉,以使該抵接件15之抵接部15a由該第一端221a或該第二
端221b朝該中心部223形成滑移,此時,由於該抵接件15之抵接部15a抵接於該第一端221a或該第二端221b時,相對抵接於該中心部223具有較大的推抵力,因此產生朝向該中心部223滑移的一力矩,藉此,該抵接部15a朝該中心部223形成相對滑移時,係可以藉由該力矩輔助該軸接部21相對該軸套1旋轉,以使該抵接部15a於該導正槽22中回到抵接於該中心部223的位置,以輔助該輪組件3之輪體32回正。
Please refer to Figure 6, and when the wheelchair turns back to go straight, the
綜上所述,本發明的輪椅輔助輪,係可以裝設於輪椅,藉由該軸接部徑向方向上的周面具有該導正槽,且該軸接部之軸心到該導正槽的半徑,係形成由該導正槽的第一端及該第二端分別朝該導正槽之中心部遞減,以使該軸套之推抵件抵接於該導正槽之第一端或該第二端時係形成最大推抵力,並產生朝向該中心部滑移的一力矩,當輪椅轉向完成而欲回復直行時,使用者即可藉由該力矩的輔助,輕易地帶動該軸接部旋轉以使該推抵件重新回到推抵該中心部的位置,以使該軸接部之輪體回正,達到減輕使用者負擔的功效。 To sum up, the wheelchair auxiliary wheel of the present invention can be installed on a wheelchair, by having the guide groove on the circumferential surface of the shaft connecting portion in the radial direction, and the shaft center of the shaft connecting portion reaches the guide The radius of the groove is formed from the first end and the second end of the guide groove respectively decreasing toward the center of the guide groove, so that the pushing member of the sleeve abuts against the first guide groove At the end or the second end, the maximum thrust is formed, and a moment of slipping toward the center is generated. When the wheelchair is turned and wants to go straight back, the user can easily drive with the assistance of the moment. The shaft connection part rotates to make the pushing member return to the position of pushing against the central part, so that the wheel body of the shaft connection part is returned to the center, achieving the effect of reducing the burden on the user.
雖然本發明已利用上述較佳實施例揭示,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之內,相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇,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 using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art without departing from the spirit and scope of the present invention may make various changes and modifications relative to the above-mentioned embodiments. The technical scope of the invention is protected. Therefore, the scope of protection of the invention shall be subject to the scope of the attached patent application.
1:軸套 1: Bushing
1a:第一開口 1a: first opening
1b:第二開口 1b: second opening
11:軸承組件 11: Bearing assembly
13:蓋體 13: Lid
14:滑移道 14: slipway
141:開口 141: Open
15:抵接件 15: abutment
15a:抵接部 15a: Abutment part
15b:伸縮部 15b: Telescopic part
151:滾動件 151: Rolling pieces
152:支撐件 152: Support
153:彈性件 153: Elastic
154:定位柱 154: Positioning column
16:輔助滑移道 16: Auxiliary slipway
161:開口 161: open
162:輔助定位件 162: auxiliary positioning parts
162a:輔助抵接部 162a: Auxiliary abutment part
162b:輔助伸縮部 162b: Auxiliary telescopic part
17:連接部 17: Connection part
171:鎖固件 171: Lock firmware
2:轉向軸 2: steering shaft
21:軸接部 21: Shaft joint
21a:軸管 21a: Shaft tube
21b:芯軸 21b: Mandrel
21c:限位環 21c: Limit ring
21d:檔止環 21d: gear stop ring
22:導正槽 22: guide groove
221:槽口 221: Notch
221a:第一端 221a: first end
221b:第二端 221b: second end
222:槽底面 222: groove bottom
223:中心部 223: Center
224:定位孔 224: positioning hole
225:輔助定位孔 225: auxiliary positioning hole
3:輪組件 3: Wheel assembly
31:輪架 31: Wheel frame
31a:第一支架 31a: first bracket
31b:第二支架 31b: second bracket
311:樞接部 311: Pivot
312:第一連接端 312: first connection end
313:第二連接端 313: second connection end
314:滑軌 314: Slide
32:輪體 32: Wheel center
33:連動件 33: Linkage
33a:滑移端 33a: Sliding end
33b:樞接端 33b: pivot end
331:彈性件 331: Elastic
C:輪椅架體 C: Wheelchair frame
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW108138080A TWI726452B (en) | 2019-10-22 | 2019-10-22 | Caster for a wheelchair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW108138080A TWI726452B (en) | 2019-10-22 | 2019-10-22 | Caster for a wheelchair |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI726452B true TWI726452B (en) | 2021-05-01 |
TW202116277A TW202116277A (en) | 2021-05-01 |
Family
ID=77020532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW108138080A TWI726452B (en) | 2019-10-22 | 2019-10-22 | Caster for a wheelchair |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI726452B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM554788U (en) * | 2017-07-24 | 2018-02-01 | Li Yuan Machinery Co Ltd | Auxiliary power device and wheelchair |
TWM579021U (en) * | 2018-03-27 | 2019-06-11 | 國睦工業股份有限公司 | Safety electric wheelchair |
CN209236634U (en) * | 2018-11-03 | 2019-08-13 | 上海互邦智能康复设备股份有限公司 | A kind of auxiliary wheel device of electric wheelchair |
-
2019
- 2019-10-22 TW TW108138080A patent/TWI726452B/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM554788U (en) * | 2017-07-24 | 2018-02-01 | Li Yuan Machinery Co Ltd | Auxiliary power device and wheelchair |
TWM579021U (en) * | 2018-03-27 | 2019-06-11 | 國睦工業股份有限公司 | Safety electric wheelchair |
CN209236634U (en) * | 2018-11-03 | 2019-08-13 | 上海互邦智能康复设备股份有限公司 | A kind of auxiliary wheel device of electric wheelchair |
Also Published As
Publication number | Publication date |
---|---|
TW202116277A (en) | 2021-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN202911873U (en) | Scooter | |
US9254860B2 (en) | Outer column and steering column apparatus | |
US8517407B2 (en) | Three-wheel pedal-style wheelchair | |
TWI522551B (en) | Actuator with quick-release mechanism | |
US20070144279A1 (en) | Quick-Releasing Linear Actuator | |
JP4286155B2 (en) | Coffin with casters | |
US20060261571A1 (en) | Propulsion unit for wheelchairs | |
JP2007182213A (en) | Steering device | |
WO2007079346A3 (en) | Articulated wheel assemblies and vehicles therewith | |
TWI671066B (en) | Mobile carrier | |
US8020881B2 (en) | Mobility assistance apparatus | |
TWI726452B (en) | Caster for a wheelchair | |
CA2507070C (en) | Propulsion unit for wheelchairs | |
TWI719352B (en) | Walker | |
JP6495855B2 (en) | Walking assistance vehicle | |
US8201657B2 (en) | Steering apparatus for vehicle | |
KR102384455B1 (en) | Combined structure of electric drive wheel for wheelchair | |
KR20120000804U (en) | Skate board | |
JP2001239944A (en) | Joining structure of telescopic shaft | |
JP2008074260A (en) | Center take-off type steering device | |
TWI731621B (en) | Walker | |
JP3230117U (en) | Movable seat structure for vehicles | |
TWI494238B (en) | Electron powered auxiliary steering device with pre-twisting function | |
CN220158584U (en) | Wheelchair gear device of portable step of going up | |
JP4449005B2 (en) | Walker |