TWI735827B

TWI735827B - Casters

Info

Publication number: TWI735827B
Application number: TW107144551A
Authority: TW
Inventors: 林青松
Original assignee: 取德工業股份有限公司
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2021-08-11
Also published as: TW202021830A

Abstract

一腳輪，包含：一輪座、一移動單元、一轉向單元、一制動單元，及一驅動單元，該移動單元穿設於該輪座，並包括兩個能轉動的轉輪，該制動單元包括一個制動座，及一第一制動桿，該制動座可在一個煞車位置與一個移動位置移動，在該煞車位置時相較於在該活動位置，該制動桿向上嵌入於該轉輪，該驅動單元包括一個具有一斜槽的移動件，及一具有嵌入於該斜槽的凸部並貫穿該轉向單元的驅動桿，可利用一操作單元帶動該移動件移動，使該驅動桿隨著該斜槽上下移動，該驅動桿向上移動後，該驅動塊會向上頂撐該制動座移動至該煞車位置。 A caster includes: a wheel base, a moving unit, a steering unit, a braking unit, and a driving unit. The moving unit is passed through the wheel base and includes two rotatable wheels. The braking unit includes one A brake seat, and a first brake lever, the brake seat can move in a braking position and a moving position, when in the braking position compared to the active position, the brake lever is embedded in the wheel upwards, the drive unit It includes a moving part with a chute, and a driving rod with a convex part embedded in the chute and penetrating the steering unit. An operating unit can be used to drive the moving part to move so that the driving rod follows the chute Move up and down, after the drive rod moves up, the drive block will push up the brake seat to move to the braking position.

Description

腳輪 Casters

本發明是有關於一種腳輪，特別是指一種具有止動煞車功能的腳輪。 The present invention relates to a caster, in particular to a caster with the function of stopping and braking.

一般為了移動方便，通常會在乘載物品的載台下方安裝數個腳輪。而為了防止該載台在地面不平整的地方自行移動，會在該腳輪上設置煞車機構。台灣專利I451984揭露的煞車輪組，該煞車輪組由一控制組、一煞車組，及一車輪所組成，該車輪上具有數個煞車卡槽；該煞車組主要是具有一樞軸、一與該樞軸相連之煞車塊，及一設置於該煞車塊上的卡掣塊；該控制組主要具有一固定塊，及一設置於該固定塊內的控制塊，及一與該樞軸相連之滑塊。利用該控制塊的導滑面帶動該滑塊上下移動，進而帶動該樞軸去連動該煞車塊，使該卡掣塊嵌入煞車卡槽中達到煞車的效果。 Generally, in order to facilitate the movement, several casters are usually installed under the carrier. In order to prevent the carrier from moving on its own on uneven ground, a brake mechanism is provided on the caster. The brake wheel set disclosed in Taiwan Patent I451984 is composed of a control group, a brake group, and a wheel. The wheel has several brake grooves; the brake group mainly has a pivot, a and The brake block connected with the pivot and a catch block arranged on the brake block; the control group mainly has a fixed block, a control block arranged in the fixed block, and a control block connected with the pivot Slider. The sliding guide surface of the control block is used to drive the sliding block to move up and down, thereby driving the pivot to link the braking block, so that the catch block is embedded in the braking slot to achieve a braking effect.

雖然該腳輪解決了煞車的問題，但該滑塊與該導滑面之間僅利用靠抵的方式帶動，在釋放該控制塊時，因釋放時的瞬間彈力易造成滑塊偏卡於該導滑面或是該固定塊上，導致無法順利將該滑塊復歸回非煞車的位置，要再次驅動該控制塊煞車時便無法正常操作。 Although the caster solves the problem of braking, the slider and the sliding guide surface are only driven by abutment. When the control block is released, the slider is easily stuck in the guide due to the instantaneous elastic force at the time of release. Slippery surface or the fixed block, resulting in failure to smoothly remove The slider returns to the non-brake position, and it cannot operate normally when the control block is driven to brake again.

本發明之目的，是在提供一種能夠克服先前技術的至少一個缺點的腳輪。 The purpose of the present invention is to provide a caster that can overcome at least one of the disadvantages of the prior art.

於是，本發明腳輪，包含：一輪座、一移動單元、一轉向單元、一制動單元，及一驅動單元。該輪座界定一個容置空間，及一個開口朝上並向下延伸至該容置空間的軸孔。該移動單元包括一穿設於該輪座的輪軸，及兩個套設於該輪軸左右兩端並能轉動的轉輪，每一轉輪包括一個面向另一轉輪的內側面，至少一個內側面上設有數個間隔環繞其自身軸線排列的第一齒塊，相鄰的兩個第一齒塊共同界定出一個第一齒槽。該轉向單元包括一支插設於該軸孔的軸桿。 Therefore, the caster of the present invention includes: a wheel base, a moving unit, a steering unit, a braking unit, and a driving unit. The wheel base defines an accommodating space, and a shaft hole with an opening upward and extending downward to the accommodating space. The moving unit includes a wheel shaft passing through the wheel base, and two rotating wheels sleeved on the left and right ends of the wheel shaft and capable of rotating. Each wheel includes an inner side facing the other wheel, at least one inner side A number of first tooth blocks arranged at intervals around its own axis are arranged on the side surface, and two adjacent first tooth blocks jointly define a first tooth groove. The steering unit includes a shaft inserted in the shaft hole.

該制動單元設置於該容置空間內，並包括一個界定一個穿孔的制動座、一插設於該輪座與該穿孔的第一制動桿，及一設置於該制動座與該輪座之間的第一彈性件，該制動座可相對於該輪座在一個煞車位置與一個移動位置移動，在該煞車位置時相較於在該活動位置，該制動座水平位置較高，該制動桿同時向上移動且至少一端嵌入於對應的第一齒槽內，該第一彈性件恆將該制動座移至該活動位置。 The brake unit is arranged in the accommodating space, and includes a brake seat defining a perforation, a first brake rod inserted between the wheel seat and the perforation, and a first brake rod arranged between the brake seat and the wheel seat The first elastic member, the brake seat can move relative to the wheel seat in a braking position and a moving position. In the braking position, compared to the active position, the horizontal position of the brake seat is higher, and the brake lever is at the same time Move upward and at least one end is embedded in the corresponding first tooth groove, the first elastic member always moves the brake seat to the Activity location.

該驅動單元包括一個位於該轉向單元上方的移動件、一支由上往下貫穿該軸桿的驅動桿，及一片安裝於該驅動桿下端並可頂撐該制動座的驅動塊，該移動件具有一圍壁，及一形成於該圍壁且傾斜延伸的斜槽，該圍壁具有分別界定該斜槽之上、下槽緣且彼此上下間隔的一上槽面與一下槽面，該驅動桿具有一穿出該移動件的頭部，及一個凸出於該頭部並可嵌入該斜槽的凸部，該移動件可相對於該軸桿前後移動，移動時該凸部會被該上槽面與該下槽面限位帶動而隨著該斜槽上下移動，進而帶動該驅動桿上下移動，該驅動桿向上移動後，該驅動塊會向上頂撐該制動座移動至該煞車位置。 The driving unit includes a moving part located above the steering unit, a driving rod penetrating the shaft from top to bottom, and a driving block installed at the lower end of the driving rod and capable of supporting the brake seat. The moving part There is a surrounding wall, and an obliquely extending chute formed on the surrounding wall. The surrounding wall has an upper groove surface and a lower groove surface which respectively define the upper and lower groove edges of the chute and are spaced up and down. The rod has a head that penetrates the moving part, and a convex part that protrudes from the head and can be inserted into the chute. The moving part can move back and forth relative to the shaft. When moving, the convex part will be The upper groove surface and the lower groove surface limit the drive and move up and down with the chute, and then drive the drive rod to move up and down. After the drive rod moves up, the drive block will push up the brake seat and move to the braking position .

本發明的功效在於：藉由該移動件的前後移動，帶動該制動座可相對於該輪座上下位移而產生煞車和解除煞車的效果，並利用該凸部嵌入該斜槽降低該驅動桿與該移動件之間在操作煞車時不會造成偏卡的情形發生。 The effect of the present invention is that by the forward and backward movement of the moving part, the brake seat can be driven to move up and down relative to the wheel seat to produce the effect of braking and releasing the brake, and the convex part is inserted into the chute to lower the driving rod and When the brake is operated between the moving parts, it will not cause partial jamming.

1:輪座 1: Wheel seat

11:容置空間 11: accommodating space

12:軸孔 12: Shaft hole

2:移動單元 2: mobile unit

21:輪軸 21: Axle

22:轉輪 22: Runner

221:內側面 221: inside

222:第一齒塊 222: first tooth block

223:第一齒槽 223: first cogging

3:轉向單元 3: Steering unit

31:安裝板 31: Mounting plate

32:軸桿 32: Axle

33:軸承 33: Bearing

34:齒輪 34: Gear

341:第二齒塊 341: second tooth block

342:第二齒槽 342: second cogging

35:第三彈性件 35: The third elastic part

4:制動單元 4: Braking unit

41:制動座 41: brake seat

411:穿孔 411: piercing

42:第一制動桿 42: The first brake lever

43:第一彈性件 43: The first elastic part

44:第二制動桿 44: second brake lever

45:第二彈性件 45: second elastic part

5:驅動單元 5: Drive unit

51:移動件 51: moving parts

511:圍壁 511: Wall

512:斜槽 512: chute

513:上槽面 513: upper groove surface

514:下槽面 514: lower groove surface

52:驅動桿 52: drive rod

521:頭部 521: head

522:凸部 522: Convex

53:驅動塊 53: drive block

A:操作單元 A: Operating unit

本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是本發明腳輪的一實施例的一個立體圖；圖2是該實施例的一個立體分解圖；圖3是一個剖視側視圖，說明一制動座於一活動位置；圖4是一個剖視前視圖，說明該制動座於該活動位置；圖5是一個類似於圖3的圖，說明該制動座於一煞車位置；圖6是一個類似於圖4的圖，說明該制動座於該煞車位置；及圖7是一個類似於圖3的圖，說明該制動座於該煞車位置時，一第一制動桿與一第二制動桿未嵌入於對應的一第一齒槽與一第二齒槽的狀態。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view of an embodiment of the caster of the present invention; Figure 2 is a perspective exploded view of the embodiment; Figure 3 is a cross-sectional side view illustrating a brake seat in an active position; Figure 4 is a sectional front view illustrating the brake seat in the active position; Figure 5 It is a diagram similar to Figure 3, illustrating the brake seat in a braking position; Figure 6 is a diagram similar to Figure 4, illustrating the brake seat in the braking position; and Figure 7 is a diagram similar to Figure 3, It illustrates that when the brake seat is in the braking position, a first brake lever and a second brake lever are not embedded in the corresponding first and second tooth grooves.

參閱圖1、2，本發明腳輪的一個實施例，該腳輪包含一輪座1、一移動單元2、一轉向單元3、一制動單元4，及一驅動單元5。 Referring to FIGS. 1 and 2, an embodiment of the caster of the present invention includes a wheel base 1, a moving unit 2, a steering unit 3, a braking unit 4, and a driving unit 5.

該輪座1界定一個容置空間11，及一個開口朝上並向下延伸至該容置空間11的軸孔12。 The wheel base 1 defines an accommodating space 11 and a shaft hole 12 whose opening faces upward and extends downward to the accommodating space 11.

該移動單元2包括一穿設於該輪座1的輪軸21，及兩個套設於該輪軸21左右兩端並能轉動的轉輪22，每一轉輪22包括一個面向另一轉輪22的內側面221，至少一個內側面221上設有數個間隔環繞其自身軸線排列的第一齒塊222，相鄰的兩個第一齒塊222共同界定出一個第一齒槽223。 The moving unit 2 includes a wheel shaft 21 passing through the wheel base 1, and two rotating wheels 22 sleeved on the left and right ends of the wheel shaft 21 and capable of rotating. Each wheel 22 includes one wheel 22 facing the other wheel 22 At least one inner side surface 221 is provided with a plurality of first tooth blocks 222 arranged at intervals around its own axis, and two adjacent first tooth blocks 222 jointly define a first tooth groove 223.

該轉向單元3包括一個位於該輪座1上方的安裝板31、一支插設於該軸孔12的軸桿32、一個套設於該軸桿32的軸承33、一個套設於該軸桿32且位於該軸承33下方並隨該軸桿32旋轉的齒輪34，及一個套設於該軸桿32並位於該齒輪34與該軸承33之間的第三彈性件35。該軸桿32與該安裝板31固接，使該安裝板31可相對該輪座1以該軸桿32為軸心旋轉。該齒輪34與該軸桿32是呈非圓形地套接，使該齒輪34可沿該軸桿32上下移動，並且能隨該軸桿32繞自身軸線旋轉，該齒輪34具有數個間隔環繞排列的第二齒塊341，相鄰兩個第二齒塊341共同界定出一個第二齒槽342。該第三彈性件35其中一端頂抵於該齒輪34，另一端頂抵於該軸承33。 The steering unit 3 includes a mounting plate 31 located above the wheel base 1, a shaft 32 inserted in the shaft hole 12, a bearing 33 sleeved on the shaft 32, and a bearing 33 sleeved on the shaft 32. 32 and a gear 34 located under the bearing 33 and rotating with the shaft 32, and a third elastic member 35 sleeved on the shaft 32 and located between the gear 34 and the bearing 33. The shaft 32 is fixed to the mounting plate 31 so that the mounting plate 31 can rotate relative to the wheel base 1 with the shaft 32 as the axis. The gear 34 and the shaft 32 are non-circularly sleeved, so that the gear 34 can move up and down along the shaft 32 and can rotate with the shaft 32 around its own axis. The gear 34 has several intervals around In the second tooth blocks 341 arranged, two adjacent second tooth blocks 341 jointly define a second tooth groove 342. One end of the third elastic member 35 abuts against the gear 34 and the other end abuts against the bearing 33.

該制動單元4設置於該容置空間11內，並包括一個界定一個穿孔411的制動座41、一插設於該輪座1與該穿孔411的第一制動桿42、一設置於該制動座41與該輪座1之間的第一彈性件43，及一個固定於該制動座41上並位於該軸孔12的第二制動桿44。該制動座41可相對於該輪座1在一個煞車位置與一個移動位置移動，在該煞車位置時相較於在該活動位置，該制動座41水平位置較高，該第一制動桿42同時向上移動且至少一端嵌入於對應的第一齒槽223內，該第二制動桿44會嵌入於對應的該第二齒槽342。該第一彈性件43在該制動座41位於該煞車位置時會積蓄一彈力，恆將該制動座41推至該活動位置。 The brake unit 4 is disposed in the accommodating space 11, and includes a brake seat 41 defining a perforation 411, a first brake lever 42 inserted in the wheel seat 1 and the perforation 411, and a brake seat disposed on the brake seat. The first elastic member 43 between 41 and the wheel base 1, and a second brake lever 44 fixed on the brake base 41 and located in the shaft hole 12. The brake seat 41 can move in a braking position and a moving position relative to the wheel seat 1. When in the braking position, the brake seat 41 has a higher horizontal position than in the active position, and the first brake lever 42 is at the same time Moving upward and at least one end is embedded in the corresponding first tooth groove 223, the second brake lever 44 will be embedded in the corresponding second tooth groove 342. The first elastic member 43 accumulates an elastic force when the brake seat 41 is in the braking position, and constantly pushes the brake seat 41 to the active position.

該驅動單元5包括一個位於該轉向單元3上方的移動件51、一支由上往下貫穿該軸桿32的驅動桿52，及一片安裝於該驅動桿52下端並可頂撐該制動座41的驅動塊53。該移動件51具有一圍壁511，及一形成於該圍壁511上且傾斜延伸的斜槽512。該圍壁511具有分別界定該斜槽512的上、下槽緣且彼此上下間隔的一上槽面513與一下槽面514，該驅動桿52具有一穿出該移動件51的頭部521，及至少一個凸出於該頭部521並可嵌入該斜槽512的凸部522。 The driving unit 5 includes a moving part 51 located above the steering unit 3, a driving rod 52 penetrating the shaft 32 from top to bottom, and a piece of driving rod 52 installed at the lower end of the driving rod 52 and capable of supporting the brake seat 41 The drive block 53. The moving member 51 has a surrounding wall 511 and a chute 512 formed on the surrounding wall 511 and extending obliquely. The surrounding wall 511 has an upper groove surface 513 and a lower groove surface 514 that respectively define the upper and lower groove edges of the chute 512 and are spaced up and down. The driving rod 52 has a head 521 that penetrates the moving part 51, And at least one protrusion 522 protruding from the head 521 and capable of being inserted into the chute 512.

參閱圖3~圖6，使用上，通常是在需要被搬運的一載台(圖未示)下方藉由該安裝板31與該載台固接，將該腳輪安裝於該載台，通常是安裝四個該腳輪，利用該移動單元2進行省力的推動該載台，並利用該轉向單元3來控制行進方向的改變。另外再藉由外接一操作單元A與該移動件51結合來帶動該移動件51前後移動。該操作單元A可以是一繩索延伸至使用者的近身處的控桿，以供使用者操作控桿來移動該移動件以進行煞車操作，也可以同時連接複數個腳輪的該等移動件51，達到同時帶動該等移動件51的目的。由於該操作單元A並非本發明之重點，因此不再敘述。 Refer to Figures 3 to 6, in use, usually under a carrier (not shown) to be transported, the mounting plate 31 is fixed to the carrier, and the caster is installed on the carrier, usually Four casters are installed, the moving unit 2 is used to push the carrier in a labor-saving manner, and the steering unit 3 is used to control the change of the traveling direction. In addition, an external operating unit A is combined with the moving member 51 to drive the moving member 51 to move back and forth. The operating unit A may be a control rod with a rope extending to the user's close body for the user to operate the control rod to move the moving part for braking operation, and may also be connected to the moving parts 51 of a plurality of casters at the same time. , To achieve the purpose of driving the moving parts 51 at the same time. Since the operating unit A is not the focus of the present invention, it will not be described again.

該移動件51可相對於該軸桿32前後移動，移動時該凸部522會受到該上槽面513與該下槽面514的限位帶動而沿著該斜槽512的延伸方向上下移動，進而帶動該驅動桿52上下移動，該驅動桿52向上移動後，該驅動塊53會向上頂撐該制動座41移動至該煞車位置。需要停放該載台時，藉由該操作單元A帶動該移動件51移動至如圖5的位置，此時，該凸部522會因抵靠於該下槽面514而上移，並藉由該驅動塊53帶動該制動座41移至該煞車位置，該第一制動桿42會嵌入該第一齒槽223使該等轉輪22無法轉動，該第二制動桿44會嵌入該第二齒槽342使該齒輪34無法轉動，進而使該軸桿32無法轉動，達到止動煞車的功能(如圖5、6所示)。需要再次移動該載台時，藉由反向操作該操作單元A帶動該移動件51移動至如圖3的位置，該上槽面513會迫使該凸部522沿著該斜槽512的延伸方向向下位移，同時該第一彈性件43會將該制動座41向下推至該活動位置也同時將該移動件51回復至如圖3的位置，使該移動單元2與該轉向單元3，不受限制的繼續活動。 The moving member 51 can move back and forth relative to the shaft 32. When moving, the convex portion 522 will be driven by the upper groove surface 513 and the lower groove surface 514 to move up and down along the extension direction of the chute 512. And then drive the drive rod 52 to move up and down, the drive After the rod 52 moves upward, the driving block 53 will push up the brake seat 41 to move to the braking position. When the carrier needs to be parked, the operating unit A drives the moving member 51 to move to the position shown in FIG. The driving block 53 drives the brake seat 41 to move to the braking position, the first brake lever 42 is inserted into the first tooth groove 223 so that the wheels 22 cannot rotate, and the second brake lever 44 is inserted into the second tooth The groove 342 prevents the gear 34 from rotating, thereby preventing the shaft 32 from rotating, achieving the function of stopping the brake (as shown in FIGS. 5 and 6). When the carrier needs to be moved again, by operating the operating unit A in the reverse direction to drive the moving member 51 to move to the position shown in FIG. Displacement downwards, and at the same time, the first elastic member 43 pushes the brake seat 41 down to the active position and at the same time restores the moving member 51 to the position shown in FIG. 3, so that the moving unit 2 and the steering unit 3, Unrestricted continued activities.

該上槽面513與該下槽面514能保持該凸部522恆容置於該斜槽512中，確保操作煞車與解除煞車的動作皆是由該移動件51帶動。且當該頭部521或該凸部522與該移動件51產生偏卡時，可藉由反覆操作移動該移動件51使該上槽面513與該下槽面514帶動該凸部522復位成能沿該斜槽512移動的位置。 The upper groove surface 513 and the lower groove surface 514 can keep the convex portion 522 in the chute 512 at a constant volume, and ensure that the braking and releasing actions are driven by the moving member 51. And when the head 521 or the convex portion 522 and the moving member 51 are misaligned, the moving member 51 can be moved by repeated operations so that the upper groove surface 513 and the lower groove surface 514 drive the convex portion 522 to return to A position capable of moving along the chute 512.

配合參閱圖7，該制動座41於該煞車位置時，但是若該第一制動桿42是頂抵於該第一齒塊222，則該第一制動桿42無法向上移動進入該第一齒槽223而壓縮該第二彈性件45導致無法煞車，此時，使用者可稍微推動該載台，轉動該等轉輪22直到該第一齒槽223轉至可被該第一制動桿42嵌入的位置，該第二彈性件45會將該第一制動桿42推移嵌入對應的該第一齒槽223；若該第二制動桿44是頂抵於對應的該第二齒塊341，則該齒輪34會被向上推移並擠壓該第三彈性件35，使該第二制動桿44無法進入該第二齒槽342，導致無法限制該輪座1轉向，此時，使用者可稍微轉動該載台，進而轉動該軸桿32直到該第二齒槽342轉至可被該第二制動桿44嵌入的位置，該第三彈性件35會將該齒輪34推移使該第二制動桿44嵌入對應的該第二齒槽342。 With reference to Fig. 7, when the brake seat 41 is in the braking position, but if the first brake lever 42 abuts against the first tooth block 222, the first brake lever 42 cannot move upward into the first tooth slot 223 and compressing the second elastic member 45 results in unable to stop At this time, the user can slightly push the carrier and rotate the wheels 22 until the first tooth groove 223 is rotated to a position where the first brake lever 42 can be embedded, and the second elastic member 45 will The first brake lever 42 is pushed into the corresponding first tooth groove 223; if the second brake lever 44 is pressed against the corresponding second tooth block 341, the gear 34 will be pushed upward and squeeze the third tooth block. The elastic member 35 prevents the second brake lever 44 from entering the second tooth groove 342, so that the wheel seat 1 cannot be restricted from turning. At this time, the user can slightly rotate the carrier, and then rotate the shaft 32 until the first The second tooth groove 342 rotates to a position where the second brake lever 44 can be embedded, and the third elastic member 35 pushes the gear 34 so that the second brake lever 44 is inserted into the corresponding second tooth groove 342.

綜上所述，本發明腳輪的功效在於：藉由該移動件51的該上槽面513與該下槽面514來帶動該驅動桿52的該凸部522沿著該斜槽512上下移動，進而使該制動座41在該煞車位置與該活動位置移動，使用者可外接操作單元A於該移動件51上來控制該移動件51，將操作該腳輪煞車的動作不再侷限於在該腳輪上，另外藉由該凸部522嵌入該斜槽512來限制該頭部521與該移動件51的相對位置，使該頭部521不會因受力不均而偏卡於該移動件51，影響操作煞車的動作，因此，確實能達到本發明之目的。 In summary, the effect of the caster of the present invention is that the upper groove surface 513 and the lower groove surface 514 of the moving member 51 drive the convex portion 522 of the driving rod 52 to move up and down along the chute 512. In turn, the brake seat 41 is moved between the braking position and the movable position. The user can connect the operating unit A to the moving part 51 to control the moving part 51, so that the operation of the caster brake is no longer limited to the caster. In addition, the relative position of the head 521 and the moving part 51 is restricted by the convex part 522 being inserted into the chute 512, so that the head 521 will not be biased against the moving part 51 due to uneven force, which affects The action of operating the brake, therefore, can indeed achieve the purpose of the present invention.

惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to The scope of the invention patent Inside.

1:輪座 1: Wheel seat

11:容置空間 11: accommodating space

12:軸孔 12: Shaft hole

2:移動單元 2: mobile unit

21:輪軸 21: Axle

22:轉輪 22: Runner

221:內側面 221: inside

222:第一齒塊 222: first tooth block

35:第三彈性件 35: The third elastic part

4:制動單元 4: Braking unit

41:制動座 41: brake seat

411:穿孔 411: piercing

42:第一制動桿 42: The first brake lever

43:第一彈性件 43: The first elastic part

44:第二制動桿 44: second brake lever

45:第二彈性件 45: second elastic part

223:第一齒槽 223: first cogging

3:轉向單元 3: Steering unit

31:安裝板 31: Mounting plate

32:軸桿 32: Axle

33:軸承 33: Bearing

34:齒輪 34: Gear

341:第二齒塊 341: second tooth block

342:第二齒槽 342: second cogging

5:驅動單元 5: Drive unit

51:移動件 51: moving parts

511:圍壁 511: Wall

512:斜槽 512: chute

513:上槽面 513: upper groove surface

514:下槽面 514: lower groove surface

52:驅動桿 52: drive rod

521:頭部 521: head

522:凸部 522: Convex

53:驅動塊 53: drive block

Claims

一腳輪，包含：一輪座，界定一個容置空間，及一個開口朝上並向下延伸至該容置空間的軸孔；一移動單元，包括一穿設於該輪座的輪軸，及兩個套設於該輪軸左右兩端並能轉動的轉輪，每一轉輪包括一個面向另一轉輪的內側面，至少一個內側面上設有數個間隔環繞其自身軸線排列的第一齒塊，相鄰的兩個第一齒塊共同界定出一個第一齒槽；一轉向單元，包括一支插設於該軸孔的軸桿；一制動單元，設置於該容置空間內，並包括一個界定一個穿孔的制動座、一插設於該輪座與該穿孔的第一制動桿，及一設置於該制動座與該輪座之間的第一彈性件，該制動座可相對於該輪座在一個煞車位置與一個移動位置移動，在該煞車位置時相較於在該活動位置，該制動座水平位置較高，該制動桿同時向上移動且至少一端嵌入於對應的第一齒槽內，該第一彈性件恆將該制動座移至該活動位置；及一驅動單元，包括一個位於該轉向單元上方的移動件、一支由上往下貫穿該軸桿的驅動桿，及一片安裝於該驅動桿下端並可頂撐該制動座的驅動塊，該移動件具有一圍壁，及一形成於該圍壁上且傾斜延伸的斜槽，該圍壁具有分別界定該斜槽之上、下槽緣且彼此上下間隔的一上槽面與一下槽面，該驅動桿具有一穿出該移動件的頭部，及一個凸出於該頭部並可嵌入該斜槽的凸部，該移動件可相對於該軸桿前後移動，移動時該凸部會被該上槽面與該下槽面限位帶動而隨著該斜槽上下移動，進而帶動該驅動桿上下移動，該驅動桿向上移動後，該驅動塊會向上頂撐該制動座移動至該煞車位置。 A caster includes: a wheel seat, defining an accommodating space, and a shaft hole with an opening upward and extending downward to the accommodating space; a moving unit, including a wheel shaft passing through the wheel seat, and two Runners sleeved on the left and right ends of the axle and capable of rotating, each runner includes an inner side facing the other runner, at least one inner side is provided with a plurality of first tooth blocks arranged at intervals around its own axis, Two adjacent first tooth blocks jointly define a first tooth slot; a steering unit, including a shaft inserted in the shaft hole; a braking unit, arranged in the accommodating space, and including a Defining a perforated brake seat, a first brake rod inserted between the wheel seat and the perforation, and a first elastic member arranged between the brake seat and the wheel seat, the brake seat can be opposed to the wheel The seat moves in a braking position and a moving position. In the braking position, the brake seat has a higher horizontal position than in the active position. The brake lever moves upward at the same time and at least one end is embedded in the corresponding first tooth groove , The first elastic member constantly moves the brake seat to the active position; and a drive unit, including a moving member located above the steering unit, a drive rod that penetrates the shaft from top to bottom, and a piece of mounting At the lower end of the driving rod, a driving block capable of supporting the brake seat, the moving part has a surrounding wall, and an obliquely extending chute formed on the surrounding wall, and the surrounding wall has respectively defining the upper part of the chute , An upper groove surface and a lower groove surface with a lower groove edge and spaced up and down from each other, the driving rod has a head that penetrates the moving part, and A convex part protruding from the head and capable of being inserted into the chute. The moving part can move back and forth relative to the shaft. When moving, the convex part will be driven by the upper groove surface and the lower groove surface. The chute moves up and down, and then drives the drive rod to move up and down. After the drive rod moves up, the drive block will push up the brake seat to move to the braking position.

如請求項1所述的腳輪，其中，該轉向單元還包括一個套設於該軸桿的軸承，及一個套設於該軸桿且位於該軸承下方並隨該軸桿旋轉的齒輪，該齒輪與該軸桿是呈非圓形地套接，使該齒輪可沿該軸桿上下移動，並且能隨該軸桿繞自身軸線旋轉，該齒輪具有數個間隔環繞排列的第二齒塊，相鄰兩個第二齒塊共同界定出一個第二齒槽，該制動單元還具有一個固定於該制動座上並位於該軸孔的第二制動桿，該制動座在該煞車位置時，該第二制動桿會嵌入於對應的該第二齒槽。 The caster according to claim 1, wherein the steering unit further includes a bearing sleeved on the shaft, and a gear sleeved on the shaft and located under the bearing and rotating with the shaft, the gear It is non-circularly sleeved with the shaft, so that the gear can move up and down along the shaft, and can rotate with the shaft around its own axis. The gear has a number of second tooth blocks arranged around the shaft at intervals. Two adjacent second tooth blocks jointly define a second tooth slot. The brake unit also has a second brake rod fixed on the brake seat and located in the shaft hole. When the brake seat is in the braking position, the first The two brake levers are embedded in the corresponding second tooth groove.

如請求項2所述的腳輪，其中，該轉向單元還包括一個套設於該軸桿並位於該齒輪與該軸承之間的第三彈性件，該第三彈性件其中一端頂抵於該齒輪，另一端頂抵於該軸承，該制動座於該煞車位置時，若該第二制動桿是頂抵於對應的該第二齒塊，則該齒輪會被向上推移並擠壓該第三彈性件，轉動該軸桿直到該第二齒槽轉至可被該第二制動桿嵌入的位置，該第三彈性件會將該齒輪推移使該第二制動桿嵌入對應的該第二齒槽。 The caster according to claim 2, wherein the steering unit further includes a third elastic member sleeved on the shaft and located between the gear and the bearing, one end of the third elastic member abuts against the gear , The other end abuts against the bearing, and when the brake seat is at the braking position, if the second brake lever abuts against the corresponding second tooth block, the gear will be pushed upward and squeeze the third elastic Member, rotate the shaft until the second tooth slot is turned to a position where the second brake lever can be embedded, and the third elastic member pushes the gear so that the second brake lever is inserted into the corresponding second tooth slot.

如請求項1至3中任一項所述的腳輪，其中，該制動單元還包括一個設置於該穿孔內的第二彈性件，該第二彈性件其中一端頂抵於該制動座，另一端頂抵於該第一制動桿，該制動座於該煞車位置時，若該第一制動桿是頂抵於該第一齒塊，則該第一制動桿無法向上移動而壓縮該第二彈性件，轉動該等轉輪直到該第一齒槽轉至可被該第一制動桿嵌入的位置，該第二彈性件會將該第一制動桿推移嵌入對應的該第一齒槽。 The caster according to any one of claims 1 to 3, wherein the braking unit further includes a second elastic member disposed in the perforation, and the second elastic member One end abuts against the brake seat, and the other end abuts against the first brake lever. When the brake seat is in the braking position, if the first brake lever abuts against the first tooth block, the first brake The rod cannot move upwards and compresses the second elastic member, and rotates the wheels until the first tooth groove is turned to a position where the first brake lever can be embedded, and the second elastic member pushes the first brake rod into Corresponding to the first tooth slot.