TWI790180B

TWI790180B - Caster with a circular positioning structure

Info

Publication number: TWI790180B
Application number: TW111128865A
Authority: TW
Inventors: 林青松
Original assignee: 取德工業股份有限公司
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-01-11
Also published as: TW202406765A

Abstract

A caster with a circular positioning structure, which drives a driving rod and a driving piece to rotate by stamping pedals, so as to make a positioning pin of the driving piece moved periodically between first, second and path points of a positioning piece, so that a cam unit is pushed against an axis, thereby, the positioning piece and a directional hole will be engaged with or separated from each other, and a locking end of a locking member will be locked with or separated from a locking slot, achieving the effect of stopping, preventing the caster from rotating or loosing.

Description

具有循環式定位結構的腳輪Casters with circular positioning structure

本發明係關於輪組的技術領域，特別係指一種具有循環式定位結構的腳輪。 The invention relates to the technical field of wheel sets, in particular to a caster with a circular positioning structure.

一般為了使載體(病床、精密儀器或工作檯等)移動方便、省力，通常於載體下方設置有腳輪，而載體透過腳輪移動至定點後須透過另外的止動元件固定腳輪，前述的止動元件主要是透過踩踏剎車踏板達成止動腳輪的效果，而需要鬆釋腳輪時，另有一鬆釋踏板供踩動以鬆釋腳輪，但前述剎車踏板與鬆釋踏板之位置相近，容易發生踩錯踏板之問題。 Generally, in order to make the carrier (hospital bed, precision instrument or workbench, etc.) move conveniently and labor-saving, casters are usually set under the carrier, and after the carrier moves to a fixed point through the caster, the caster must be fixed through another stop element, the aforementioned stop element The effect of stopping the casters is mainly achieved by stepping on the brake pedal. When the casters need to be released, there is another release pedal for stepping on to release the casters. However, the positions of the brake pedal and the release pedal are similar, and it is easy to step on the wrong pedal. question.

有鑑於此，確有必要提供一種技術手段以解決前述問題。 In view of this, it is indeed necessary to provide a technical means to solve the aforementioned problems.

本發明之目的在於，解決腳輪是透過兩個不同踏板的止動或鬆釋，造成容易踩錯的問題。 The purpose of the present invention is to solve the problem that the casters are easily stepped on wrongly due to the stop or release of the casters through two different pedals.

為解決前述問題，本發明為一種具有循環式定位結構的腳輪，包含：一驅動組件，具有樞接於一支架上的一驅動桿，以及固定於該驅動桿上的一驅動片，該驅動片具有一凸抵部、以及設於該凸抵部上的一定位栓；一定位件，具有透過一樞桿樞接於該支架的一樞接部，該定位件具有朝向該驅動片凸設一第一定位部，該第一定位部較接近該樞桿的側邊與該樞接部的側邊之間形成一第一定位點，該定位件具有連接該第一定位部及該樞接部的的一第二定位部，該第二定位部與該第一定位部之間形成一第二定位點，且該第二定位部具有朝向該支架傾斜的一導引斜面，該定位件具有一第三定位部，該第三定位部係銜接於該樞接部，該第三定位部連接該第二定位部，且該第三定位部與該第二定位部之間形成一路徑點；一彈性件，套設於該樞桿，該彈性件的其中一端固定於該支架，該彈性件的另一端固定於該定位件；一凸輪單元，具有固定連接該驅動桿的一凸輪，該凸輪具有自邊緣凹設的一第一定位部及一第二定位部，該第一定位部具有一第一底面，該第二定位部具有一第二底面，該第一底面與該驅動桿之間的距離大於該第二底面與該驅動桿之間的距離，該凸輪單元另具有持續靠抵於該凸輪的一受抵件；一軸心，靠抵於該受抵件；一定向單元，具有套設於該軸心並固定的一定向件，以及套設於該軸心並隨著該軸心位移的一定位片，該定向件開設有供該軸心通過的一定向孔，該定位片具有自周緣凸設的一卡設部；一腳輪組，固定連接該軸心。In order to solve the foregoing problems, the present invention provides a caster with a circular positioning structure, comprising: a driving assembly, a driving rod pivotally connected to a bracket, and a driving piece fixed on the driving rod, the driving piece It has a protruding part and a positioning pin arranged on the protruding part; a positioning part has a pivot part connected to the bracket through a pivot rod, and the positioning part has a protruding part facing the driving piece. The first positioning part, a first positioning point is formed between the side of the first positioning part that is closer to the pivot rod and the side of the pivot joint part, and the positioning part has a connection between the first positioning part and the pivot joint part A second positioning part, a second positioning point is formed between the second positioning part and the first positioning part, and the second positioning part has a guiding slope inclined toward the bracket, and the positioning part has a A third positioning part, the third positioning part is connected to the pivotal part, the third positioning part is connected to the second positioning part, and a path point is formed between the third positioning part and the second positioning part; An elastic member is sleeved on the pivot rod, one end of the elastic member is fixed to the bracket, and the other end of the elastic member is fixed to the positioning member; a cam unit has a cam fixedly connected to the driving rod, and the cam has A first positioning portion and a second positioning portion are recessed from the edge, the first positioning portion has a first bottom surface, the second positioning portion has a second bottom surface, the distance between the first bottom surface and the driving rod The distance is greater than the distance between the second bottom surface and the driving rod, and the cam unit further has an abutting member continuously abutting against the cam; an axis abutting against the abutting member; an orientation unit having a sleeve A directional piece fixed on the axis, and a positioning piece sleeved on the axis and displaced along with the axis, the directional piece is provided with a directional hole for the axis to pass through, and the positioning piece has A clamping part protruding from the peripheral edge; a caster set fixedly connected with the shaft.

在一較佳實施例中，該彈性件為一扭力彈簧。In a preferred embodiment, the elastic member is a torsion spring.

在一較佳實施例中，該腳輪組具有一腳輪，該腳輪用以在地面滾動。In a preferred embodiment, the caster set has a caster, and the caster is used for rolling on the ground.

在一較佳實施例中，該驅動組件另具有設於該驅動桿上的一踩踏結構，該踏板具有固定連接該驅動桿的二側板，以及連接該二側板的一踏板。In a preferred embodiment, the driving assembly further has a stepping structure disposed on the driving rod, the pedal has two side plates fixedly connected to the driving rod, and a pedal connected to the two side plates.

在一較佳實施例中，該驅動組件另具有一收縮彈簧，該收縮彈簧的其中一端固定於該驅動片，該收縮彈簧的另一端固定於該支架。In a preferred embodiment, the driving assembly further has a contraction spring, one end of the contraction spring is fixed to the driving plate, and the other end of the contraction spring is fixed to the bracket.

在一較佳實施例中，該驅動桿的剖面為多邊形，該驅動片具有一多邊孔，該驅動片以該多邊孔套入該驅動桿固定。In a preferred embodiment, the cross section of the driving rod is polygonal, the driving piece has a polygonal hole, and the driving piece is inserted into the driving rod through the polygonal hole to be fixed.

在一較佳實施例中，該定位件另具有連接該第三定位部的一勾部，該勾部具有朝向該驅動桿的一勾面，該勾部與該第一定位部之間形成一開口，該勾面朝向該開口傾斜。In a preferred embodiment, the locating member further has a hook connected to the third locating portion, the hook has a hook surface facing the driving rod, and a gap is formed between the hook and the first locating portion. an opening, and the hook surface is inclined towards the opening.

使用者透過踩踏該踏板帶動該驅動片轉動，讓驅動片的定位栓在該第一定位點、該第二定位點、該路徑點之間循環移動，從而帶動凸輪單元推抵軸心，讓定位片與定向孔相互卡合或脫離，進而達成能夠止動或鬆釋腳輪的效果。The user drives the driving piece to rotate by stepping on the pedal, so that the positioning pin of the driving piece moves circularly among the first positioning point, the second positioning point, and the path point, thereby driving the cam unit to push against the axis, allowing the positioning The plate and the directional hole engage or disengage from each other, thereby achieving the effect of stopping or releasing the caster.

請參閱1至圖10，本發明為一種具有循環式定位結構的腳輪，主要具有一驅動組件10、一定位件20、一彈性件30、一凸輪單元40、一軸心50、一定向單元60及一腳輪組70，其中：Please refer to FIG. 1 to FIG. 10 , the present invention is a caster wheel with a circular positioning structure, mainly comprising a driving assembly 10 , a positioning member 20 , an elastic member 30 , a cam unit 40 , an axis 50 , and an orientation unit 60 And a caster set 70, wherein:

該驅動組件10具有一支架11及樞接於該支架11上的一驅動桿12，以及固定於該驅動桿12上的一驅動片13，該驅動片13具有一凸抵部131、以及設於該凸抵部131上的一定位栓132，較佳的，該定位栓132係自該驅動片13上略為凸出，其中，定義該支架11及該驅動桿12之延伸方向為一橫向Y。The driving assembly 10 has a bracket 11, a driving rod 12 pivotally connected to the bracket 11, and a driving piece 13 fixed on the driving rod 12. The driving piece 13 has a protruding portion 131 and is located on the A positioning pin 132 on the protruding portion 131, preferably, the positioning pin 132 slightly protrudes from the driving piece 13, wherein the extending direction of the bracket 11 and the driving rod 12 is defined as a transverse direction Y.

該定位件20透過一樞桿21樞接於該支架11，該定位件20具有相對之一第一端20A及一第二端20B，該第一端20A及該第二端20B之間的延伸方向為一高度方向Z，該高度方向Z係垂直於該橫向Y，該第一端20A係樞接於該支架11，該定位件20具有一樞接部22，該樞接部22透過該樞桿21樞接於該支架11，該第一端20A位於該樞接部22，該定位件20另具有一第一定位部23，該第一定位部23連接於該樞接部22較接近該驅動桿12的一側，該第一定位部23係沿著一縱向X延伸，該縱向X係垂直於該橫向Y，使該第一定位部23朝向該驅動桿12延伸，該第一定位部23較接近該樞桿21的側邊與該樞接部22較接近該驅動桿12的側邊之間形成一第一定位點P1，該定位件20另具有連接該第一定位部23及該樞接部22的一第二定位部24，該第二定位部24與該第一定位部23之間形成一第二定位點P2，請參照圖7B，且該第二定位部24具有朝向該支架11傾斜的一導引斜面241，該定位件20另具有一第三定位部25，該第三定位部25係銜接於該樞接部22，該樞接部22及該第三定位部25沿著該高度方向Z銜接，該第二端20B位於該第三定位部25，該第三定位部25亦連接該第二定位部24，且該第三定位部25與該第二定位部24之間形成一路徑點P3。The positioning member 20 is pivotally connected to the bracket 11 through a pivot rod 21, the positioning member 20 has a first end 20A and a second end 20B opposite to each other, and the extension between the first end 20A and the second end 20B The direction is a height direction Z, the height direction Z is perpendicular to the transverse direction Y, the first end 20A is pivotally connected to the bracket 11, the positioning member 20 has a pivot portion 22, and the pivot portion 22 passes through the pivot The rod 21 is pivotally connected to the bracket 11, the first end 20A is located at the pivot portion 22, and the positioning member 20 also has a first positioning portion 23, the first positioning portion 23 is connected to the pivot portion 22 and is closer to the pivot portion 22. On one side of the driving rod 12, the first positioning portion 23 extends along a longitudinal direction X, and the longitudinal X is perpendicular to the horizontal direction Y, so that the first positioning portion 23 extends toward the driving rod 12, and the first positioning portion A first positioning point P1 is formed between the side of the pivot 23 closer to the pivot 21 and the side of the pivot 22 closer to the drive rod 12, and the positioning member 20 also has a connection between the first positioning portion 23 and the A second positioning portion 24 of the pivot portion 22, a second positioning point P2 is formed between the second positioning portion 24 and the first positioning portion 23, please refer to FIG. 7B, and the second positioning portion 24 has a direction toward the A guiding inclined surface 241 of the bracket 11 is inclined. The positioning member 20 also has a third positioning portion 25. The third positioning portion 25 is connected to the pivot portion 22. The pivot portion 22 and the third positioning portion 25 Connected along the height direction Z, the second end 20B is located at the third positioning portion 25, the third positioning portion 25 is also connected to the second positioning portion 24, and the third positioning portion 25 and the second positioning portion 24 A path point P3 is formed between them.

於較佳實施例中，該第一定位部23較接近該樞桿21的側邊具有一引導弧面231，該引導弧面231係鄰近該第一定位點P1。In a preferred embodiment, the side of the first positioning portion 23 closer to the pivot 21 has a guiding arc surface 231 , and the guiding arc surface 231 is adjacent to the first positioning point P1.

該彈性件30套設於該樞桿21，該彈性件30的其中一端固定於該支架11，該彈性件30的另一端固定於該定位件20；在本實施例中，該彈性件30為一扭力彈簧，透過扭力彈簧兩端之固定支腳分別固定於該定位件20及該支架11上，透過扭力彈簧的彈性，能夠牽引該定位件20朝向該驅動桿12靠抵。The elastic member 30 is sleeved on the pivot rod 21, one end of the elastic member 30 is fixed to the bracket 11, and the other end of the elastic member 30 is fixed to the positioning member 20; in this embodiment, the elastic member 30 is A torsion spring is respectively fixed on the positioning member 20 and the bracket 11 through the fixed feet at both ends of the torsion spring. Through the elasticity of the torsion spring, the positioning member 20 can be pulled toward the driving rod 12 to lean against.

請參照圖9、10，該凸輪單元40具有固定連接該驅動桿12的一凸輪41，該凸輪41具有自邊緣凹設的一第一定位部411及一第二定位部412，該第一定位部411具有一第一底面4111，該第二定位部412具有一第二底面4121，該第一底面4111與該驅動桿12之間的距離大於該第二底面4121與該驅動桿12之間的距離，該凸輪單元40另具有持續靠抵於該凸輪41的一受抵件42。Please refer to Figs. 9 and 10, the cam unit 40 has a cam 41 fixedly connected to the drive rod 12, the cam 41 has a first positioning portion 411 and a second positioning portion 412 recessed from the edge, the first positioning The part 411 has a first bottom surface 4111, the second positioning part 412 has a second bottom surface 4121, the distance between the first bottom surface 4111 and the driving rod 12 is greater than the distance between the second bottom surface 4121 and the driving rod 12 Distance, the cam unit 40 also has an abutting member 42 continuously abutting against the cam 41 .

該軸心50的其中一端連接該受抵件42，定義該軸心50連接該受抵件42之一端為一第一端51，該軸心50之另一端為一第二端52。One end of the shaft 50 is connected to the resisting member 42 , and the end of the shaft 50 connected to the resisting member 42 is defined as a first end 51 , and the other end of the shaft 50 is a second end 52 .

該定向單元60具有套設於該軸心50並固定的一定向件61，以及套設於該軸心50並隨著該軸心50位移的一定位片62，該定向件61開設有供該軸心50通過的一定向孔611，該定位片62具有自周緣凸設的一卡設部621，該卡設部621供以卡設於該定向孔611。The orientation unit 60 has an orientation member 61 sleeved on the shaft 50 and fixed, and a positioning piece 62 sleeved on the shaft 50 and displaced with the shaft 50. The orientation member 61 is provided with a An orientation hole 611 passes through the axis 50 , and the positioning piece 62 has an engaging portion 621 protruding from a peripheral edge thereof, and the engaging portion 621 is configured to be engaged in the orientation hole 611 .

該腳輪組70連接該驅動組件10；在本實施例中，該腳輪組70具有一腳輪71，該腳輪71用以在地面滾動，該腳輪71於內側具有一卡止齒件72，該卡止齒件72概呈圓形，該等卡止齒件72外周緣具有複數卡止槽721。The caster set 70 is connected to the driving assembly 10; in this embodiment, the caster set 70 has a caster 71, the caster 71 is used to roll on the ground, and the caster 71 has a locking tooth 72 inside, the locking The tooth parts 72 are generally circular, and the locking tooth parts 72 have a plurality of locking grooves 721 on the outer periphery thereof.

一卡止件80，概為一片體，該卡止件80係可樞轉的裝設於該腳輪組70，該卡止件80具有相對之一受抵端81及一卡止端82，該軸心50之該第二端52係抵於該受抵端81，該卡止端82供以卡設於該卡止槽721，以使該腳輪71止動，而當該卡止端82遠離該卡止槽721時，該腳輪71則呈現可滾動的狀態。A locking member 80 is generally a piece, and the locking member 80 is pivotably installed on the caster set 70. The locking member 80 has an opposing end 81 and a locking end 82. The second end 52 of the shaft center 50 is against the pressed end 81, and the locking end 82 is provided for locking in the locking groove 721, so that the caster 71 is stopped, and when the locking end 82 moves away from When the locking groove 721 is in place, the caster 71 is in a rollable state.

在本實施例中，請參照圖1，該驅動組件10另具有設於該驅動桿12上的一踩踏結構14，該踩踏結構14具有固定連接該驅動桿12的二側板141，以及連接該二側板141的一踏板142，透過踩踏該踏板142能夠轉動該驅動桿12。In this embodiment, please refer to FIG. 1 , the driving assembly 10 further has a stepping structure 14 disposed on the driving rod 12 , the stepping structure 14 has two side plates 141 fixedly connected to the driving rod 12 , and the two side plates 141 connected to the driving rod 12 . A pedal 142 on the side plate 141 can rotate the driving rod 12 by stepping on the pedal 142 .

其次，該驅動組件10另具有一收縮彈簧15，該收縮彈簧15沿著該縱向X延伸，該收縮彈簧15的其中一端固定於該驅動片13，該收縮彈簧15的另一端固定於該支架11，透過該收縮彈簧15牽引該驅動片13，使踩踏該踩踏結構14並鬆釋後，能夠由該收縮彈簧15帶動該驅動片13復位。Secondly, the driving assembly 10 further has a contraction spring 15, the contraction spring 15 extends along the longitudinal direction X, one end of the contraction spring 15 is fixed to the driving piece 13, and the other end of the contraction spring 15 is fixed to the bracket 11 , the driving piece 13 is pulled by the contraction spring 15, so that after stepping on the stepping structure 14 and releasing it, the contraction spring 15 can drive the driving piece 13 to reset.

再者，該驅動桿12的剖面為多邊形，該驅動片13具有一多邊孔133，該驅動片13透過以該多邊孔133套入該驅動桿12，使該驅動片13固定連接該驅動桿12，並且會隨著該驅動桿12的轉動而被帶動。Furthermore, the section of the driving rod 12 is polygonal, the driving piece 13 has a polygonal hole 133, the driving piece 13 is inserted into the driving rod 12 through the polygonal hole 133, so that the driving piece 13 is fixedly connected to the driving rod 12, and will be driven along with the rotation of the drive rod 12.

該定位件20另具有連接該第三定位部25的一勾部26，該勾部26具有朝向該驅動桿12的一勾面261，該勾部26與該第一定位部23之間形成一開口27，該勾面261朝向該開口27傾斜，當使用者踩踏該踏板142，使該定位栓132沿著該引導弧面231位移至靠抵於該勾面261，則該定位栓132會被該勾面261導引而落入該開口27，進而讓該定位栓132能夠定位於該第二定位點P2。The positioning member 20 also has a hook portion 26 connected to the third positioning portion 25, the hook portion 26 has a hook surface 261 facing the driving rod 12, and a gap is formed between the hook portion 26 and the first positioning portion 23. Opening 27, the hook surface 261 is inclined towards the opening 27. When the user steps on the pedal 142, the positioning pin 132 is displaced along the guiding arc surface 231 to abut against the hooking surface 261, and the positioning pin 132 will be The hook surface 261 is guided to drop into the opening 27, so that the positioning bolt 132 can be positioned at the second positioning point P2.

以上為本發明於一較佳實施例中之結構組態及其連接關係，本發明之使用方式及其所能產生的效果如下所述：The above is the structural configuration and connection relationship of the present invention in a preferred embodiment, the use mode of the present invention and the effect it can produce are as follows:

請參閱圖3，在鬆釋狀態下，該腳輪71能夠任意轉動，而該定位栓132位於該第一定位點P1並靠抵於該第一定位部23，請參照圖9，由於該第一底面4111與該驅動桿12之間的距離大於該第二底面4121與該驅動桿12之間的距離，此時，該受抵件42係抵於該第二底面4121，使該受抵件42較接近該驅動桿12，此時，該定位片62遠離該定向孔611，由於該定位片62不受該定向孔611的限制，使該腳輪組70能夠自由轉動，同時，該卡止端82亦未卡設於該卡止槽721，是以，該腳輪71係可自由地移動。Please refer to FIG. 3 , in the released state, the caster 71 can rotate freely, and the positioning pin 132 is located at the first positioning point P1 and leans against the first positioning portion 23 , please refer to FIG. 9 , because the first The distance between the bottom surface 4111 and the driving rod 12 is greater than the distance between the second bottom surface 4121 and the driving rod 12. At this time, the abutment member 42 is tied against the second bottom surface 4121, so that the abutment member 42 Closer to the drive rod 12, at this time, the positioning piece 62 is far away from the directional hole 611, because the positioning piece 62 is not restricted by the directional hole 611, the caster set 70 can rotate freely, and at the same time, the locking end 82 It is not locked in the locking groove 721, so the caster 71 can move freely.

請參閱圖3、4，當使用者踩踏該踏板142，透過該踏板142帶動該驅動桿12轉動，由該驅動桿12帶動該驅動片13轉動，使該定位栓132從該第一定位點P1開始沿著該引導弧面231位移並朝向該開口27移動，該定位栓132沿著該引導弧面231位移時係靠抵該引導弧面231，由於該定位栓132係自該驅動片13上略為凸出，使該定位栓132沿著該引導弧面231位移時驅使該定位件20被定位栓132推抵而以該樞桿21為樞轉中心朝縱向X樞擺，使該定位栓132自該引導弧面231移動至該勾面261，使該定位栓132靠抵於該勾面261，而使用者鬆釋該踏板142後，請參照圖5，由於該第一定位部23被該彈性件30帶動而朝向該驅動桿12轉動，該定位栓132則會被該勾面261導引而落入該開口27，進而讓該定位栓132能夠定位於該第二定位點P2。Please refer to Figures 3 and 4, when the user steps on the pedal 142, the pedal 142 drives the drive rod 12 to rotate, and the drive rod 12 drives the drive piece 13 to rotate, so that the positioning pin 132 moves from the first positioning point P1 Start to move along the guide arc surface 231 and move towards the opening 27. When the positioning pin 132 is displaced along the guide arc surface 231, it is tied against the guide arc surface 231. Since the positioning pin 132 is tied from the driving piece 13 Slightly protruding, so that when the positioning pin 132 is displaced along the guiding arc 231, the positioning member 20 is pushed against by the positioning pin 132 and pivots toward the longitudinal direction X with the pivot 21 as the pivot center, so that the positioning pin 132 Move from the guide arc surface 231 to the hook surface 261, make the positioning pin 132 lean against the hook surface 261, and after the user releases the pedal 142, please refer to FIG. The elastic member 30 is driven to rotate toward the driving rod 12 , and the positioning pin 132 is guided by the hook surface 261 and falls into the opening 27 , so that the positioning pin 132 can be positioned at the second positioning point P2 .

請參閱圖10，由於該凸輪41被帶動轉動，使該凸輪41的該第一底面4111靠抵於該受抵件42，由於該第一底面4111與該驅動桿12之間的距離大於第二底面4121與該驅動桿12之間的距離，使該受抵件42被推抵，進而帶動該軸心50朝向遠離該驅動桿12的方向移動，進而帶動該定位片62落入該定向孔611內，由於該定位片62被該定向孔611限制而無法周向轉動，因此，與該定位片62相互固定連接的軸心50也無法周向轉動，使該腳輪組70無法任意轉動，此時，該卡止端82亦卡設於該卡止槽721，是以，該腳輪71係呈止動狀態。Please refer to Fig. 10, since the cam 41 is driven to rotate, the first bottom surface 4111 of the cam 41 is abutted against the abutting member 42, since the distance between the first bottom surface 4111 and the driving rod 12 is greater than the second The distance between the bottom surface 4121 and the driving rod 12 is such that the abutting member 42 is pushed against, thereby driving the axis 50 to move away from the driving rod 12, and further driving the positioning piece 62 to fall into the orientation hole 611 Inside, since the positioning piece 62 is restricted by the orientation hole 611 and cannot rotate in the circumferential direction, the shaft center 50 that is fixedly connected to the positioning piece 62 cannot rotate in the circumferential direction, so that the caster set 70 cannot rotate arbitrarily. , the locking end 82 is also locked in the locking groove 721, so the caster 71 is in a stopped state.

請參閱圖6、7A、7B，當使用者再度踩踏該踏板142，則該定位栓132離開該第二定位點P2並靠抵於該第三定位部25，當使用者鬆釋該踏板142後，因為該收縮彈簧15拉引，使該驅動片13轉動而讓該定位栓132移動至該路徑點P3。Please refer to Figures 6, 7A, and 7B. When the user steps on the pedal 142 again, the positioning pin 132 leaves the second positioning point P2 and leans against the third positioning portion 25. When the user releases the pedal 142 , because the contraction spring 15 is pulled, the driving plate 13 is rotated and the positioning pin 132 is moved to the path point P3.

請參閱圖8A、8B，當該定位栓132位於該路徑點P3，則該定位栓132被該導引斜面241導引，進而讓該定位栓132推抵該定位件20，使該定位件20沿著橫向Y向外偏擺以壓縮該彈性件30，再透過該收縮彈簧15拉引而讓驅動片13樞轉復位，使該定位栓132再次移動至該第一定位點P1，而讓該腳輪組70恢復至可自由地移動且能夠轉動的狀態。8A and 8B, when the positioning pin 132 is located at the path point P3, the positioning pin 132 is guided by the guide slope 241, and then the positioning pin 132 is pushed against the positioning member 20, so that the positioning member 20 Swing outward along the transverse direction Y to compress the elastic member 30, and then pull the retractable spring 15 to make the driving piece 13 pivot and reset, so that the positioning pin 132 moves to the first positioning point P1 again, so that the The caster set 70 returns to a freely movable and rotatable state.

10:驅動組件 11:支架 12:驅動桿 13:驅動片 131:凸抵部 132:定位栓 133:多邊孔 14:踩踏結構 141:側板 142:踏板 15:收縮彈簧 20:定位件 20A:第一端 20B:第二端 21:樞桿 22:樞接部 23:第一定位部 231:引導弧面 24:第二定位部 241:導引斜面 25:第三定位部 26:勾部 261:勾面 27:開口 30:彈性件 40:凸輪單元 41:凸輪 411:第一定位部 4111:第一底面 412:第二定位部 4121:第二底面 42:受抵件 50:軸心 51:第一端 52:第二端 60:定向單元 61:定向件 611:定向孔 62:定位片 621:卡設部 70:腳輪組 71:腳輪 72:卡止齒件 721:卡止槽 80:卡止件 81:受抵端 82:卡止端 P1:第一定位點 P2:第二定位點 P3:路徑點 X:縱向 Y:橫向 Z:高度方向 10: Drive components 11: Bracket 12: Drive rod 13: Driver piece 131: Convex part 132: positioning bolt 133: Multilateral hole 14: Stampede structure 141: side panel 142: Pedal 15: retraction spring 20: Positioning parts 20A: first end 20B: second end 21: Pivot 22: pivot joint 23: The first positioning department 231: Guiding curved surface 24: The second positioning department 241: guide bevel 25: The third positioning department 26: hook 261: hook surface 27: opening 30: Elastic parts 40: Cam unit 41: cam 411: The first positioning department 4111: the first bottom surface 412: The second positioning department 4121: second bottom surface 42: Receipt 50: axis 51: first end 52: second end 60: Orientation unit 61: Orientation piece 611: Orientation hole 62:Positioning film 621: Card Design Department 70: caster set 71: casters 72: locking gear 721: locking groove 80: Locking parts 81: Receiving end 82: Locking end P1: first anchor point P2: Second anchor point P3: Waypoint X: Vertical Y: Horizontal Z: height direction

圖1為本發明於一較佳實施例中之立體圖；圖2為本發明於一較佳實施例中之側視圖；圖3為本發明於一較佳實施例中之局部放大側視圖；圖4為定位栓從第一定位點移動至第二定位點的側視圖；圖5為定位栓定位於第二定位點的側視圖；圖6為定位栓離開第二定位點的側視圖；圖7A為定位栓移動至路徑點的側視圖；圖7B為基於圖7A的剖線之剖視圖；圖8A為定位栓推擠定位件壓縮彈性件的側視圖；圖8B為基於圖8A的剖線之剖視圖；圖9為腳輪組呈鬆釋狀態的側面剖視圖；圖10為腳輪組呈止動定位狀態的側面剖視圖。 Fig. 1 is the perspective view of the present invention in a preferred embodiment; Fig. 2 is a side view of the present invention in a preferred embodiment; Fig. 3 is a partially enlarged side view of the present invention in a preferred embodiment; Fig. 4 is a side view of the positioning bolt moving from the first positioning point to the second positioning point; Fig. 5 is a side view of the positioning bolt positioned at the second positioning point; Fig. 6 is a side view of the positioning bolt leaving the second positioning point; Figure 7A is a side view of the positioning pin moving to the way point; Figure 7B is a cross-sectional view based on the section line of Figure 7A; Fig. 8A is a side view of the positioning bolt pushing the positioning member to compress the elastic member; Fig. 8B is a sectional view based on the section line of Fig. 8A; Fig. 9 is a side sectional view of the caster wheel set in a loose state; Fig. 10 is a side sectional view of the caster wheel set in a stop positioning state.

11:支架 11: Bracket

12:驅動桿 12: Drive rod

13:驅動片 13: Driver piece

131:凸抵部 131: Convex part

132:定位栓 132: positioning bolt

14:踩踏結構 14: Stampede structure

141:側板 141: side panel

142:踏板 142: Pedal

15:收縮彈簧 15: retraction spring

20:定位件 20: Positioning parts

20A:第一端 20A: first end

20B:第二端 20B: second end

21:樞桿 21: Pivot

22:樞接部 22: pivot joint

23:第一定位部 23: The first positioning department

231:引導弧面 231: Guiding curved surface

24:第二定位部 24: The second positioning department

25:第三定位部 25: The third positioning department

26:勾部 26: hook

70:腳輪組 70: caster set

71:腳輪 71: casters

X:縱向 X: Vertical

Z:高度方向 Z: height direction

Claims

一種具有循環式定位結構的腳輪，包含：一驅動組件，具有樞接於一支架上的一驅動桿，以及固定於該驅動桿上的一驅動片，該驅動片具有一凸抵部、以及設於該凸抵部上的一定位栓；一定位件，具有透過一樞桿樞接於該支架的一樞接部，該定位件具有朝向該驅動片凸設一第一定位部，該第一定位部較接近該樞桿的側邊與該樞接部的側邊之間形成一第一定位點，該定位件具有連接該第一定位部及該樞接部的的一第二定位部，該第二定位部與該第一定位部之間形成一第二定位點，且該第二定位部具有朝向該支架傾斜的一導引斜面，該定位件具有一第三定位部，該第三定位部係銜接於該樞接部，該第三定位部連接該第二定位部，且該第三定位部與該第二定位部之間形成一路徑點；一彈性件，套設於該樞桿，該彈性件的其中一端固定於該支架，該彈性件的另一端固定於該定位件；一凸輪單元，具有固定連接該驅動桿的一凸輪，該凸輪具有自邊緣凹設的一第一定位部及一第二定位部，該第一定位部具有一第一底面，該第二定位部具有一第二底面，該第一底面與該驅動桿之間的距離大於該第二底面與該驅動桿之間的距離，該凸輪單元另具有持續靠抵於該凸輪的一受抵件；一軸心，連接該受抵件；一定向單元，具有套設於該軸心並固定的一定向件，以及套設於該軸心並隨著該軸心位移的一定位片，該定向件開設有供該軸心通過的一定向孔，該定位片具有自周緣凸設的一卡設部；一腳輪組，固定連接該驅動組件。 A caster wheel with a circular positioning structure, comprising: a drive assembly, with a drive rod pivotally connected to a bracket, and a drive piece fixed on the drive rod, the drive piece has a protruding part, and a A positioning bolt on the protruding part; a positioning part, which has a pivot joint connected to the bracket through a pivot rod, and the positioning part has a first positioning part protruding toward the driving piece, the first A first positioning point is formed between the side of the positioning part closer to the pivot rod and the side of the pivot joint, and the positioning member has a second positioning part connecting the first positioning part and the pivot joint, A second positioning point is formed between the second positioning portion and the first positioning portion, and the second positioning portion has a guiding slope inclined toward the bracket, and the positioning member has a third positioning portion, the third positioning portion The positioning part is connected to the pivotal part, the third positioning part is connected to the second positioning part, and a path point is formed between the third positioning part and the second positioning part; an elastic member is sleeved on the pivot Rod, one end of the elastic member is fixed to the bracket, the other end of the elastic member is fixed to the positioning member; a cam unit has a cam fixedly connected to the driving rod, and the cam has a first recessed from the edge A positioning portion and a second positioning portion, the first positioning portion has a first bottom surface, the second positioning portion has a second bottom surface, the distance between the first bottom surface and the driving rod is greater than the distance between the second bottom surface and the The distance between the driving rods, the cam unit also has an abutment that continues to abut against the cam; an axis that connects the abutment; A directional unit has a directional piece sleeved on the axis and fixed, and a positioning piece sleeved on the axis and displaced along with the axis, the directional piece is provided with a directional hole for the axis to pass The positioning piece has a clamping part protruding from the periphery; a caster set is fixedly connected with the driving assembly.

如請求項1所述之具有循環式定位結構的腳輪，其中，該彈性件為一扭力彈簧。 The caster wheel with circular positioning structure according to claim 1, wherein the elastic member is a torsion spring.

如請求項1所述之具有循環式定位結構的腳輪，其中，該腳輪組具有一腳輪，該腳輪用以在地面滾動。 The caster with circular positioning structure as described in Claim 1, wherein the caster set has a caster, and the caster is used for rolling on the ground.

如請求項1所述之具有循環式定位結構的腳輪，其中，該驅動組件另具有設於該驅動桿上的一踩踏結構，該踩踏結構具有固定連接該驅動桿的二側板，以及連接該二側板的一踏板。 The caster wheel with circular positioning structure as described in claim 1, wherein, the driving assembly further has a stepping structure arranged on the driving rod, and the stepping structure has two side plates fixedly connected to the driving rod, and connecting the two A pedal on the side panel.

如請求項1所述之具有循環式定位結構的腳輪，其中，該驅動組件另具有一收縮彈簧，該收縮彈簧的其中一端固定於該驅動片，該收縮彈簧的另一端固定於該支架。 The caster wheel with circular positioning structure as described in claim 1, wherein the driving assembly further has a contraction spring, one end of the contraction spring is fixed to the driving piece, and the other end of the contraction spring is fixed to the bracket.

如請求項1所述之具有循環式定位結構的腳輪，其中，該驅動桿的剖面為多邊形，該驅動片具有一多邊孔，該驅動片以該多邊孔套入該驅動桿固定。 The caster wheel with circular positioning structure as described in claim 1, wherein the cross section of the driving rod is polygonal, the driving piece has a polygonal hole, and the driving piece is inserted into the driving rod through the polygonal hole to be fixed.

如請求項1所述之具有循環式定位結構的腳輪，其中，該定位件另具有連接該第三定位部的一勾部，該勾部具有朝向該驅動桿的一勾面，該勾部與該第一定位部之間形成一開口，該勾面朝向該開口傾斜。 The caster with circular positioning structure as described in claim 1, wherein the positioning member further has a hook connected to the third positioning part, the hook has a hook surface facing the driving rod, and the hook and An opening is formed between the first positioning parts, and the hook surface is inclined toward the opening.