IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0636278
(2006-12-08)
|
등록번호 |
US-7753436
(2010-08-02)
|
우선권정보 |
KR-10-2006-0119936(2006-11-30) |
발명자
/ 주소 |
- Kim, Kang Tae
- Kosaka, Hideo
- Uchida, Yasushi
|
출원인 / 주소 |
- Volvo Construction Equipment Holding Sweden AB
- Press Kogyo Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
11 |
초록
▼
An operator cab for heavy equipment is described to prevent a sliding door mounted on the cab from rocking or rattling in X, Y, and Z-axis directions due to a shock or vibration applied to the cab in a state that the sliding door is fully opened. The operator cab includes an outer sidewall having a
An operator cab for heavy equipment is described to prevent a sliding door mounted on the cab from rocking or rattling in X, Y, and Z-axis directions due to a shock or vibration applied to the cab in a state that the sliding door is fully opened. The operator cab includes an outer sidewall having a doorway formed thereon; upper and lower rails provided on upper and lower portions of the outer sidewall and engaged with upper and lower rollers; a sliding door being slid by upper and lower rollers engaged with the upper and lower rails; an upper pad formed on an upper bracket; a lower pad formed on a lower bracket; an upper stopper, installed in the opened position of the outer sidewall, for being in surface contact with the upper pad when the sliding door is fully opened, and preventing the sliding door from rocking when the upper stopper becomes in surface contact with the upper pad; and a lower stopper, installed in the opened position of the outer sidewall, for being in surface contact with the lower pad when the sliding door is fully opened, and preventing the sliding door from rocking when the lower stopper becomes in surface contact with the lower pad.
대표청구항
▼
What is claimed is: 1. An operator cab for heavy equipment, comprising: an outer sidewall having a doorway formed thereon; upper and lower rails provided on upper and lower portions of the outer sidewall and engaged with upper and lower rollers, respectively; a sliding door being slid by upper and
What is claimed is: 1. An operator cab for heavy equipment, comprising: an outer sidewall having a doorway formed thereon; upper and lower rails provided on upper and lower portions of the outer sidewall and engaged with upper and lower rollers, respectively; a sliding door being slid by upper and lower rollers that are engaged with the upper and lower rails, respectively, to open or close the doorway; an upper pad formed on an upper bracket which is fixed to an inner surface of the sliding door and on which the upper roller is rotatively mounted; a lower pad formed on a lower bracket which is fixed to the inner surface of the sliding door and on which the lower roller is rotatively mounted; an upper stopper, installed in the opened position of the outer sidewall in which the sliding door is fully opened, for being in surface contact with the upper pad when the sliding door is fully opened, and preventing the sliding door from rocking by pressure of a pad elastically supported to produce a displacement in an X-axis direction when the upper stopper becomes in surface contact with the upper pad; and a lower stopper, installed in the opened position of the outer sidewall in which the sliding door is fully opened, for being in surface contact with the lower pad when the sliding door is fully opened, and preventing the sliding door from rocking by pressure of a pad elastically supported to produce a displacement in the X-axis direction when the lower stopper becomes in surface contact with the lower pad, wherein at least one of the upper and lower stoppers comprises: a case mounted on the outer sidewall, a pad being movably engaged with a guide bar fixed to penetrate the case, and having an upper surface upwardly inclined in a direction in which the sliding door is opened, and elastic members installed on outer surfaces of the guide bar in forward and backward directions of the pad to fix the sliding door by pressing the pad being in surface contact with any one of the upper and lower pads by elastic restoring forces of the elastic members when the sliding door of the elastic member is fully opened, wherein the elastic members are respectively installed on the guide bar in the backward and forward directions of the pad, and wherein the X-axis direction is a forward-backward direction. 2. The operator cab of claim 1, wherein the number of the upper and lower stoppers installed on the outer sidewall corresponds to the number of the upper and lower rollers. 3. The operator cab of claim 1, wherein the upper stopper is installed to press the upper pad in X and Y-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions, and wherein the Y-axis direction is a right-left direction. 4. The operator cab of claim 1, wherein the lower stopper comprises: a first lower stopper installed to press a first lower pad in X and Z-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Z-axis directions, and a second lower stopper installed to press a second lower pad in X and Y-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions; and wherein the Y-axis direction is a right-left direction and the Z-axis direction is an up-down direction. 5. The operator cab of claim 1, wherein the case is provided with a bracket for fixing the case to the outer sidewall, which has elongated fastening holes formed thereon so as to move the upper or lower stoppers in the X or Z-axis direction against the outer sidewall to fix the stopper to the outer sidewall, and the Z-axis direction is an up-down direction. 6. The operator cab of claim 1, wherein the case further comprises a pair of partition members, formed to correspond to the right and left directions of the case around the guide bar, for guiding a rectilineal movement of the pad in the X-axis direction if the upper or lower pad becomes in surface contact with the slant surface of the pad due to the movement of the sliding door. 7. The operator cab of claim 1, wherein the pad is made of a plastic material. 8. The operator cab of claim 1, wherein the upper and lower pads are made of a metallic material. 9. The operator cab of claim 1, wherein the elastic members are installed on the guide bar in a direction in which the pad is pressed. 10. The operator cab of claim 1, wherein the elastic members are installed on the guide bar in the forward and backward directions of the pad in such a manner that the elastic member installed in the forward direction of the pad has a strength relatively higher than the elastic member installed in the backward direction of the pad, and is installed on a part of the guide bar in the forward direction of the pad. 11. The operator cab of claim 1, wherein the elastic member installed on the guide bar in the forward direction of the pad is a tension coil spring, and the elastic member installed on the guide bar in the backward direction of the pad is a compression coil spring. 12. The operator cab of claim 1, wherein the elastic member installed on the guide bar in the forward direction of the pad is a compression coil spring, and the elastic member installed on the guide bar in the backward direction of the pad is a tension coil spring. 13. The operator cab of claim 1, wherein the elastic members are compression coil springs. 14. The operator cab of claim 1, wherein at least one of both ends of the upper or lower pad is bent so that the upper or lower pad smoothly slides when the upper or lower pad becomes in surface contact with the pad. 15. The operator cab of claim 1, wherein the upper stopper is installed at an inner end portion of the upper rail of the opened position in which the sliding door is fully opened, and the lower stopper is installed at an inner end portion of the lower rail of the opened position in which the sliding door is fully opened. 16. The operator cab of claim 1, further comprising a supporter, installed on an upper or lower portion of the outer sidewall, for being in surface contact with the sliding door, when the sliding door is fully opened, to prevent the sliding door from rocking in the X-axis direction. 17. The operator cab of claim 16, wherein the supporter is made of a plastic material. 18. The operator cab of claim 1, further comprising: a stopper bar holder formed on an inner rear surface of the sliding door; a stopper bar installed on the outer sidewall, for being engaged with the stopper bar holder when the sliding door is fully opened, and locking the stopper bar holder, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions; and a lock striker, installed adjacent to the stopper bar, for being locked when the sliding door is fully opened, wherein the Y-axis direction is a fight-left direction. 19. The operator cab of claim 18, wherein the stopper bar holder is made of a plastic material. 20. An operator cab for heavy equipment, comprising: an outer sidewall having a doorway formed thereon; upper, central, and lower rails provided on upper, central, and lower portions of the outer sidewall and engaged with upper, central, and lower rollers, respectively; a sliding door being slid by upper, central, and lower rollers that are engaged with the upper, central, and lower rails, respectively, to open or close the doorway; an upper pad formed on an upper bracket which is fixed to an inner surface of the sliding door and on which the upper roller is rotatively mounted; a central pad formed on a central bracket which is fixed to the inner surface of the sliding door and on which the central roller is rotatively mounted; a lower pad formed on a lower bracket which is fixed to the inner surface of the sliding door and on which the lower roller is rotatively mounted; an upper stopper, installed in the opened position of the outer sidewall in which the sliding door is fully opened, for being in surface contact with the upper pad when the sliding door is fully opened, and preventing the sliding door from rocking by pressure of a pad elastically supported to produce a displacement in an X-axis direction when the upper stopper becomes in surface contact with the upper pad; a central stopper, installed in the opened position of the outer sidewall in which the sliding door is fully opened, for being in surface contact with the central pad when the sliding door is fully opened, and preventing the sliding door from rocking by pressure of a pad elastically supported to produce a displacement in the X-axis direction when the central stopper becomes in surface contact with the central pad; and a lower stopper, installed in the opened position of the outer sidewall in which the sliding door is fully opened, for being in surface contact with the lower pad when the sliding door is fully opened, and preventing the sliding door from rocking by pressure of a pad elastically supported to produce a displacement in the X-axis direction when the lower stopper becomes in surface contact with the lower pad, wherein the X-axis direction is a forward-backward direction, wherein at least one of the upper, central, and lower stoppers comprises: a case mounted on the outer sidewall; a pad being movably engaged with a guide bar fixed to penetrate the case, and having an upper surface upwardly inclined in a direction in which the sliding door is opened; and elastic members installed on outer surfaces of the guide bar in forward and backward directions of the pad to fix the sliding door by pressing the pad being in surface contact with any one of the upper, central, and lower pads by their elastic restoring forces when the sliding door is fully opened; and wherein the elastic members are respectively installed on the guide bar in the backward and forward directions of the pad. 21. The operator cab of claim 20, wherein the number of the upper, central, and lower stoppers installed on the outer sidewall corresponds to the number of the upper, central, and lower rollers. 22. The operator cab of claim 20, wherein the upper stopper is installed to press the upper pad in X and Y-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions, and wherein the Y-axis direction is a right-left direction. 23. The operator cab of claim 2, wherein the lower stopper comprises: a first lower stopper installed to press a first lower pad in X and Z-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Z-axis directions, and a second lower stopper installed to press a second lower pad in X and Y-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions; and wherein the Y-axis direction is a fight-left direction and the Z-axis direction is an up-down direction. 24. The operator cab of claim 20, wherein the central stopper comprises: a first central pad installed to press a first central roller in X and Z-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Z-axis directions, and a second central stopper installed to press a second central pad in X and Y-axis directions through the pad, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions; and wherein the Y-axis direction is a fight-left direction and the Z-axis direction is an up-down direction. 25. The operator cab of claim 20, wherein the case is provided with a bracket for fixing the case to the outer sidewall, which has elongated fastening holes formed thereon so as to move at least one of the upper, central, and lower stoppers in the X or Z-axis direction against the outer sidewall to fix the stopper to the outer sidewall, and the Z-axis direction is an up-down direction. 26. The operator cab of claim 20, further comprising a supporter, installed on an upper or lower portion of the outer sidewall, for being in surface contact with the sliding door, when the sliding door is fully opened, to prevent the sliding door from rocking in the X-axis direction. 27. The operator cab of claim 20, further comprising: a stopper bar holder formed on an inner rear surface of the sliding door; a stopper bar installed on the outer sidewall, for being engaged with the stopper bar holder when the sliding door is fully opened, and locking the stopper bar holder, when the sliding door is fully opened, to prevent the sliding door from rocking in the X and Y-axis directions; and a lock striker, installed adjacent to the stopper bar, for being locked when the sliding door is fully opened, wherein the Y-axis direction is a fight-left direction. 28. The operator cab of claim 20, wherein the case further comprises a pair of partition members, formed to correspond to the right and left directions of the case around the guide bar, for guiding a rectilineal movement of the pad in the X-axis direction if any one of the upper, central, and lower pads becomes in surface contact with the slant surface of the pad due to the movement of the sliding door. 29. The operator cab of claim 20, wherein the upper, central, and lower pads are made of a metallic material. 30. The operator cab of claim 20, wherein at least one of both ends of the upper, central, or lower pad is bent so that the upper, central, or lower pad smoothly slides when the upper, central, or lower pad becomes in surface contact with the pad. 31. The operator cab of claim 20, wherein the upper stopper is installed at an inner end portion of the upper rail of the opened position in which the sliding door is fully opened, the central stopper is installed at an inner end portion of the central rail of the opened position in which the sliding door is fully opened, and the low stopper is installed at an inner end portion of the low rail of the opened position in which the sliding door is fully opened.
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