IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0864159
(2009-09-22)
|
등록번호 |
US-8464843
(2013-06-18)
|
우선권정보 |
CN-2008 2 0201506 U (2008-09-30); CN-2008 2 0202130 U (2008-10-15) |
국제출원번호 |
PCT/CN2009/074104
(2009-09-22)
|
§371/§102 date |
20100722
(20100722)
|
국제공개번호 |
WO2010/037328
(2010-04-08)
|
발명자
/ 주소 |
- Qiu, Ying
- Fang, Liming
- Xu, Jinyuan
- Ma, Jie
|
출원인 / 주소 |
- Rocateq International B.V.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
3 |
초록
▼
The invention relates a lockable caster wheel. The lockable caster wheel can be widely used in shopping carts, luggage carts, strollers, turnover carts, stretcher cars and many other trolleys. The controlling mechanism of the lockable caster wheel comprises a controller which comprises a signal rece
The invention relates a lockable caster wheel. The lockable caster wheel can be widely used in shopping carts, luggage carts, strollers, turnover carts, stretcher cars and many other trolleys. The controlling mechanism of the lockable caster wheel comprises a controller which comprises a signal receiving device and a locking device which is controlled by the controller. The locking mechanism further comprises a revolving damper which comprises a shell having a restricting structure and a damping wheel located inside the shell. The shell, through its restricting structure, separates from or connects with the locking device to form unlocked or locked states. The damping wheel connects with the wheel assembly. The caster wheel uses a damper. Beyond the allowed area of use, the trolleys can be slowly pushed for a few of meters because of the damper effect, but it will not suddenly stop completely. Therefore it will not present danger to the users. It can also prevent the casters from being damaged by a forceful push when they are locked.
대표청구항
▼
1. A lockable caster wheel, comprising a wheel frame and wheel assembly which is rotationally supported on the wheel frame; the wheel frame having a locking mechanism acting on the wheel assembly; the locking mechanism comprising a controller and a locking device corresponding with the controller; w
1. A lockable caster wheel, comprising a wheel frame and wheel assembly which is rotationally supported on the wheel frame; the wheel frame having a locking mechanism acting on the wheel assembly; the locking mechanism comprising a controller and a locking device corresponding with the controller; wherein the locking mechanism further comprises a revolving damper; the damper comprises a shell having a restricting structure and a damping wheel located inside the shell; wherein the shell, through its restricting structure, separates from or connects with the locking device to form a free, rotating state or a locked, non-rotating state, respectively; wherein the damping wheel is connected through the transmission of motion with the wheel assembly; wherein the wheel assembly comprises a tire body, a bearing and a first gear; and wherein the first gear and the bearing are connected through the same axis and fixed on the tire body. 2. The lockable caster wheel of claim 1, wherein the locking device comprises a driving part and an operative part. 3. The lockable caster wheel of claim 2, wherein the driving part comprises a motor; the operative part comprises a locking rod and a rotating head which acts on the locking rod; and the locking rod has an elastic recovery component. 4. The lockable caster wheel of claim 3, wherein the rotating head is a cam and the elastic recovering component is a torsion spring. 5. The lockable caster wheel of claim 1, wherein the damping wheel is rotationally set inside the shell; the damping wheel and the shell form a closed chamber; the chamber is filled with damping oil; between the shell and the damping wheel are provided with a sealing to prevent the damping oil from leaking. 6. The lockable caster wheel of claim 5, wherein the damping wheel comprises a base, a center, a first circular wall, and a second circular wall; said first circular wall and second circular wall form a first loop and the second circular wall and the center forms a second loop; the inner surface of the shell has a third circular wall which coordinates in space with the first loop and a fourth circular wall which coordinates in space with the second loop. 7. The lockable caster wheel of claim 6, wherein the center has a bearing bore which circumferentially fixes a rotation axis. 8. The lockable caster wheel of claim 7, wherein the bearing bore is a through-hole in the shape of a rectangle with two rounded ends. 9. The lockable caster wheel of claim 6, wherein the base has several concave chambers, and each concave chamber is filled with oil storage cotton. 10. The lockable caster wheel of claim 5, wherein the shell comprises a cover which is connected through screws with a base, wherein the sealing is provided between the base of the shell and the cover, between the center of the damping wheel and the base of the shell, and between the center of the damping wheel and the cover. 11. The lockable caster wheel of claim 10, wherein the base of the shell is provided with a first oil port which is connected to the sealed chamber; the cover is provided with a second oil port which is connected with the sealed chamber; and the first and second oil ports are respectively sealed by a first sealing and a second sealing. 12. The lockable caster wheel of claim 11, wherein the circumferential side wall of the shell is provided with the restricting structure which coordinates with the locking device. 13. The lockable caster wheel of claim 12, wherein the restricting structure is a number of ring-sector-shaped grooves which are evenly distributed along the circumferential side wall. 14. The lockable caster wheel of claim 5, wherein both of the shell and the damping wheel are made by metal. 15. The lockable caster wheel of claim 5, wherein both of the shell and the damping wheel are cylinder-shaped. 16. The lockable caster wheel of claim 1, wherein the damping wheel is linked, through a gear driving mechanism, with the first gear; the gear driving mechanism comprises parallel gear shaft and damping wheel shaft; one end of the gear shaft meshes, through a second gear, with the first gear; the other end of the gear shaft meshes, through a third gear, with a fourth gear at one end of the damping wheel shaft; and the damping wheel shaft and the damping wheel are circumferentially fixed. 17. The lockable caster wheel of claim 1, wherein the wheel frame comprises a metal stand and a plastic shell in which the controller, the locking device, and the revolving damper are contained. 18. The lockable caster wheel of claim 17, wherein the wheel assembly is set in the middle or approximately in the middle of the plastic shell. 19. The lockable caster wheel of claim 17, wherein the wheel assembly is set in the side of the plastic shell.
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