EP1346942A1 - Car upper handrail device of elevator - Google Patents
Car upper handrail device of elevator Download PDFInfo
- Publication number
- EP1346942A1 EP1346942A1 EP00985997A EP00985997A EP1346942A1 EP 1346942 A1 EP1346942 A1 EP 1346942A1 EP 00985997 A EP00985997 A EP 00985997A EP 00985997 A EP00985997 A EP 00985997A EP 1346942 A1 EP1346942 A1 EP 1346942A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- car
- handrails
- rotating
- pair
- end portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
- B66B5/0081—Safety of maintenance personnel by preventing falling by means of safety fences or handrails, being operable or not, mounted on top of the elevator car
Definitions
- a member when carrying out maintenance and inspection on an elevator, a member a maintenance personnel steps onto the car and performs maintenance and inspection work on device(s) inside the hoistway or on car-top device(s).
- a car-top handrail unit is generally provided on the car.
- the structure is complicated and a large number of parts is required, with the result that costs are high.
- the handrail needs to be assembled and folded away at the time of performing maintenance and inspection work, increasing the time required for performing the maintenance and inspection work, with the result that the operational efficiency of the elevator is degraded.
- the present invention was made with a view to solving the above-mentioned problems, and the object of the invention is to create a car-top handrail unit for an elevator which can avoid interference with beams and device(s) positioned upward of the car, and which can decrease cost with a simple structure.
- a car-top handrail unit for an elevator which is provided on a car and surrounds a working area for performing maintenance and inspection work on the car, comprising: a pair of fixed handrails provided uprightly on the upper portion of the car being spaced apart from each other in the width direction of the car, each having one end portion positioned in the vicinity of the front end portion of the car and the other end portion positioned in a middle portion in the depth direction of the car; and a pair of rotating handrails each being capable of rotating between a closed position, in which the rotating handrails extend along the width direction of the car from the other end portions of the pair of fixed handrails and close the gap between the other end portions, and an open position, in which the rotating handrails extend along the depth direction of the car from the other end portions of the pair of fixed handrails.
- Fig. 1 is a side view showing a car-top handrail unit for an elevator according to Embodiment 1 of the present invention and Fig. 2 is a cross-sectional diagram obtained by taking along a line II-II of Fig. 1.
- a pair of guide rails 12 is provided within a hoistway 11.
- a car 13 ascends/descends within the hoistway 11 while being guided by the guide rails 12.
- Doors 14 and 15 of the car are respectively provided in the front and the back of the car 13.
- a beam 18 of the building used for lifting devices at the time of installation of the elevator, is installed upward of the car 13 within the hoistway 11.
- the car-top handrail unit 20 has a pair of fixed handrails 21 and 22 and a pair of rotating handrails 23 and 24.
- the fixed handrails 21 and 22 are provided uprightly on the upper portion of the car 13 being spaced apart from each other in the width direction of the car 13 (upper and lower direction in Fig. 2). Further, one end portion of each of the fixed handrails 21 and 22 is positioned in the vicinity of the front end portion of the car 13. The other end portions of the fixed handrails 21 and 22 are positioned in a middle portion in the depth direction (left and right direction in Fig. 2).
- the rotating handrails 23 and 24 each are capable of rotating between a closed position, in which they extend along the width direction of the car 13 from the other end portions of the pair of fixed handrails 21 and 22 and close the gap between the other end portions, and an open position, in which they extend along the depth direction of the car 13 from the other end portions of the pair of fixed handrails 21 and 22 as shown in Fig. 3 and Fig. 4 (a double door type).
- a member of maintenance personnel steps onto the car 13 from the landing on the front side of the car 13 (left side in Fig. 1 and Fig. 2).
- the rotating handrails 23 and 24 are in the closed position, work is performed within the working area A.
- maintenance personnel move to the working area B, as shown in Fig. 3 and Fig. 4, the rotating handrails 23 and 24 rotate to the open position, once the car 13 has descended to a position at which the rotating handrails 23 and 24 will not interfere with the beam 18.
- a rear handrail 25 needs to be mounted on the rear end portion on the car 13.
- the rear handrail 25 is fixed to a position where the rear handrail 25 will not interfere with a beam 18 or device(s) inside the hoistway at the time of normal operation, and the rotating handrails 23 and 24 are joined to the rear handrail 25 when the rotating handrails 23 and 24 rotate to the open position. Therefore, it becomes possible to avoid interference with the beam 18 or device(s) positioned upward of the car 13 and to decrease cost with a simple structure, as well as avoiding any undue increase in time to carry out maintenance work.
- Fig. 7 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 3 of the present invention.
- a rear handrail 25 provided on both end portions of a rear handrail 25 are stoppers 26 and 27, with which the ends of rotating handrails 23 and 24 are brought into contact, thus regulating the rotation of rotating handrails 23 and 24 in the opening direction.
- the other structures are the same as those in Embodiment 2.
- the rotation of the rotating handrails 23 and 24 can be regulated with a simple structure, whereby the rotating handrails 23 and 24 are prevented from interfering with car-top device(s) or the like.
- Fig. 8 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 4 of the present invention.
- rotating handrails 23 and 24 are held in a closed position with a set screw 28 serving as retaining means for connecting them with each other. Further, the direction of rotation of the rotating handrails 23 and 24 is constantly biased to the open position by twisted coil springs 29 and 30 respectively, serving as biasing means.
- the rotating handrails 23 and 24 are held in the closed position by the set screw 28.
- the rotating handrails 23 and 24 are prevented from rotating to the open position as a result of vibration or the like during normal operation, and interference of the rotating handrails 23 and 24 with beam 18 or device(s) positioned upward of car 13 can be prevented more securely.
- a detection signal from the micro switch 31 is outputted to a control device (not shown) for controlling operation of the elevator.
- a control device for controlling operation of the elevator.
- the detecting means is not limited to the micro switch 31, and it is possible to use other mechanical switches, optical switches, proximity sensors or the like.
Landscapes
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
- The present invention relates to a car-top handrail unit for an elevator, which is provided on a car and surrounds a working area for carrying out maintenance and inspection work on the car.
- Conventionally, when carrying out maintenance and inspection on an elevator, a member a maintenance personnel steps onto the car and performs maintenance and inspection work on device(s) inside the hoistway or on car-top device(s). For the safety of the maintenance personnel at the time of performing such car-top work, a car-top handrail unit is generally provided on the car.
- Further, in order to minimize the space between the car and the ceiling of the hoistway when the elevator stops at the top floor, and to reduce the amount by which the top portion of the hoistway projects from the upper portion of the building, it is required that, when the car passes the top floor and moves to an uppermost position to which the car can physically ascend, the car-top device does not collide with the ceiling of the hoistway and the safety of the maintenance personnel at the time of performing the car-top work is ensured.
- However, in a case where a beam of the building or device(s) related to the elevator exist upward of the car, when a handrail having the necessary height (for example, 750 - 900 mm) is provided on the car, the space between the car and the ceiling of the hoistway cannot be reduced.
- In view of this, elevators have conventionally employed folding car-top handrail units. Fig. 10 is a perspective view showing, by way of example, a conventional car-top handrail unit for an elevator disclosed in Japanese Utility Model Publication No. 2-42704. Fig. 11 is a side view showing the car-top handrail unit in Fig. 10 and Fig. 12 is a side view showing a state where the car-top handrail unit in Fig. 11 is folded away. A car-
top handrail unit 2 provided on a car 1 is assembled at the time of performing maintenance and inspection work as shown in Fig. 10 and Fig. 11. During normal operation, the car-top handrail unit 2 is, as shown in Fig. 12, folded away and the height thereof is reduced. - However, in the conventional folding type car-
top handrail unit 2 described above, the structure is complicated and a large number of parts is required, with the result that costs are high. In addition, the handrail needs to be assembled and folded away at the time of performing maintenance and inspection work, increasing the time required for performing the maintenance and inspection work, with the result that the operational efficiency of the elevator is degraded. - The present invention was made with a view to solving the above-mentioned problems, and the object of the invention is to create a car-top handrail unit for an elevator which can avoid interference with beams and device(s) positioned upward of the car, and which can decrease cost with a simple structure.
- To this end, according to one aspect of the present invention, there is provided a car-top handrail unit for an elevator, which is provided on a car and surrounds a working area for performing maintenance and inspection work on the car, comprising: a pair of fixed handrails provided uprightly on the upper portion of the car being spaced apart from each other in the width direction of the car, each having one end portion positioned in the vicinity of the front end portion of the car and the other end portion positioned in a middle portion in the depth direction of the car; and a pair of rotating handrails each being capable of rotating between a closed position, in which the rotating handrails extend along the width direction of the car from the other end portions of the pair of fixed handrails and close the gap between the other end portions, and an open position, in which the rotating handrails extend along the depth direction of the car from the other end portions of the pair of fixed handrails.
-
- Fig. 1 is a side view showing a car-top handrail unit for an elevator according to Embodiment 1 of the present invention;
- Fig. 2 is a cross-sectional diagram obtained by taking along a line II-II of Fig. 1;
- Fig. 3 is a side view showing a state where the rotating handrails of Fig. 1 have rotated to an open position;
- Fig. 4 is a cross-sectional diagram obtained by taking along a line IV-IV of Fig. 3;
- Fig. 5 is a side view showing a car-top handrail unit for an
elevator according to
Embodiment 2 of the present invention; - Fig. 6 is a cross-sectional diagram obtained by taking along a line VI-VI of Fig. 5;
- Fig. 7 is a plan view showing the main portion of a car-top handrail unit for an elevator according to Embodiment 3 of the present invention;
- Fig. 8 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 4 of the present invention;
- Fig. 9 is a plan view showing the main portion of a car-top handrail unit for an elevator according to Embodiment 5 of the present invention;
- Fig. 10 is a perspective view showing an example of a conventional car-top handrail unit for an elevator;
- Fig. 11 is a side view showing the car-top handrail unit in Fig. 10; and
- Fig. 12 is a side view showing a state where the car-top handrail unit in Fig. 11 is folded away.
-
- Hereinafter, description will be made of preferred embodiments of the present invention with reference to drawings.
- Fig. 1 is a side view showing a car-top handrail unit for an elevator according to Embodiment 1 of the present invention and Fig. 2 is a cross-sectional diagram obtained by taking along a line II-II of Fig. 1. In the figures, a pair of
guide rails 12 is provided within ahoistway 11. Acar 13 ascends/descends within thehoistway 11 while being guided by theguide rails 12.Doors car 13. - On a landing side, there are provided
doors doors beam 18 of the building, used for lifting devices at the time of installation of the elevator, is installed upward of thecar 13 within thehoistway 11. - A car-
top handrail unit 20, which surrounds working areas A and B for performing maintenance and inspection work on thecar 13, is provided on thecar 13. The car-top handrail unit 20 has a pair of fixedhandrails handrails - The
fixed handrails car 13 being spaced apart from each other in the width direction of the car 13 (upper and lower direction in Fig. 2). Further, one end portion of each of thefixed handrails car 13. The other end portions of thefixed handrails - The rotating
handrails car 13 from the other end portions of the pair offixed handrails car 13 from the other end portions of the pair offixed handrails - In such a car-
top handrail unit 20, a member of maintenance personnel steps onto thecar 13 from the landing on the front side of the car 13 (left side in Fig. 1 and Fig. 2). When the rotatinghandrails rotating handrails car 13 has descended to a position at which the rotatinghandrails beam 18. - During normal operation, as shown in Fig. 1, the
rotating handrails beam 18 or device(s) positioned upward of thecar 13, as therotating handrails - That is, it is possible to avoid interference of the car-
top handrail unit 20 with thebeam 18 or device(s) positioned upward of thecar 13. Further, by simply rotating the rotatinghandrails top handrail unit 20 with thebeam 18 or any device(s) can be avoided at the same time, thus cost can be decreased with a simple structure, and also avoiding any undue increase in the time taken to carry out the maintenance work. - Furthermore, while the
beam 18 for lifting, used when installing the elevator, can be removed after installation, this requires time and labor. In contrast to this, according to the structure of Embodiment 1, the car-top handrail unit 20 does not interfere with thebeam 18, meaning thebeam 18 can be retained, and it becomes possible to eliminate the time and labor necessary for the removal of the beam. - Moreover, by retaining the
beam 18, thecar 13 can be suspended from thebeam 18 at the time of exchanging the main rope (not shown) for suspending thecar 13. Therefore, the time and labor involved in providing a new lifting member can be eliminated, enhancing the workability of maintenance work. - Next, Fig. 5 is a side view showing a car-top handrail unit for an elevator according to
Embodiment 2 of the present invention and Fig. 6 is a cross-sectional diagram obtained by taking along a line VI-VI of Fig. 5. InEmbodiment 2, thedoor 14 of the car is provided only on the front side of thecar 13. Arear handrail 25 is mounted in a rear end portion on thecar 13 so as to connect the rotatinghandrails - As described above, in the case where there is no door on the rear side of the
car 13, arear handrail 25 needs to be mounted on the rear end portion on thecar 13. In this case, therear handrail 25 is fixed to a position where therear handrail 25 will not interfere with abeam 18 or device(s) inside the hoistway at the time of normal operation, and the rotatinghandrails rear handrail 25 when the rotatinghandrails beam 18 or device(s) positioned upward of thecar 13 and to decrease cost with a simple structure, as well as avoiding any undue increase in time to carry out maintenance work. - Next, Fig. 7 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 3 of the present invention. In this example, provided on both end portions of a
rear handrail 25 are stoppers 26 and 27, with which the ends of rotatinghandrails handrails Embodiment 2. - In such a car-top handrail unit, the rotation of the
rotating handrails rotating handrails - Next, Fig. 8 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 4 of the present invention. In the figure,
rotating handrails set screw 28 serving as retaining means for connecting them with each other. Further, the direction of rotation of therotating handrails - In such a car-top handrail unit, the
rotating handrails set screw 28. Thus, therotating handrails rotating handrails beam 18 or device(s) positioned upward ofcar 13 can be prevented more securely. - Further, the
rotating handrails rotating handrails set screw 28, and thereby workability is enhanced. - Note that the retaining means is not limited to the
set screw 28 and may be, for example, an engaging member such as a hook, which is hung between therotating handrails rotating handrails rotating handrails - Next, Fig. 9 is a plan view showing the main portions of a car-top handrail unit for an elevator according to Embodiment 5 of the present invention. In the figure, arranged between
rotating handrails micro switch 31 serving as a detecting means for detecting whether therotating handrails micro switch 31 is mounted on the one rotatinghandrail 23 and is operated by the otherrotating handrail 24. - A detection signal from the
micro switch 31 is outputted to a control device (not shown) for controlling operation of the elevator. With the use of this control device, normal operation can be performed when the rotatinghandrail 24 is in the closed position. However, when the rotatinghandrail 24 is not in the closed position, it is regarded that there is a danger of interference of the car-top handrail unit withbeam 18 or the like, and thus the range in which thecar 13 can ascend is limited. - In such a car-top handrail unit, because of the provision of the
micro switch 31, therotating handrails beam 18, or device(s) and the like positioned upward thecar 13. - Note that the detecting means is not limited to the
micro switch 31, and it is possible to use other mechanical switches, optical switches, proximity sensors or the like.
Claims (6)
- A car-top handrail unit for an elevator, which is provided on a car and surrounds a working area for performing maintenance and inspection work on the car, comprising:a pair of fixed handrails provided uprightly on the upper portion of the car being spaced apart from each other in the width direction of the car, each having one end portion positioned in the vicinity of the front end portion of the car and the other end portion positioned in a middle portion in the depth direction of the car; anda pair of rotating handrails each being capable of rotating between a closed position, in which the rotating handrails extend along the width direction of the car from the other end portions of the pair of fixed handrails and closes the gap between the other end portions, and an open position, in which the rotating handrails extend along the depth direction of the car from the other end portions of the pair of fixed handrails.
- The car-top handrail unit for an elevator according to claim 1, further comprising a rear handrail disposed in the rear end portion of the car so as to make connection between end portions of the rotating handrails when they are in the open position.
- The car-top handrail unit for an elevator according to claim 2, wherein stoppers are provided on the rear handrail, in which the rotating handrails are brought into contact with each other in the tip end portions for regulating rotation of the rotating handrails.
- The car-top handrail unit for an elevator according to claim 1, further comprising a retaining means for keeping the rotating handrails in the closed position by connecting the pair of rotating handrails to each other.
- The car-top handrail unit for an elevator according to claim 4, further comprising a biasing means for biasing the direction of rotation of the rotating handrails in the open position.
- The car-top handrail unit for an elevator according to claim 1, further comprising a detecting means for detecting whether the rotating handrails are in the closed position and for outputting a detection signal to a control device that controls the operation of the elevator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2000/009425 WO2002053484A1 (en) | 2000-12-28 | 2000-12-28 | Car upper handrail device of elevator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1346942A1 true EP1346942A1 (en) | 2003-09-24 |
EP1346942A4 EP1346942A4 (en) | 2006-04-26 |
EP1346942B1 EP1346942B1 (en) | 2008-08-27 |
Family
ID=11736870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00985997A Expired - Lifetime EP1346942B1 (en) | 2000-12-28 | 2000-12-28 | Car upper handrail device of elevator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1346942B1 (en) |
JP (1) | JP4694096B2 (en) |
CN (1) | CN1289377C (en) |
DE (1) | DE60040100D1 (en) |
WO (1) | WO2002053484A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1386876A1 (en) * | 2001-04-17 | 2004-02-04 | Mitsubishi Denki Kabushiki Kaisha | Elevator cage and elevator |
EP1710191A1 (en) * | 2004-01-30 | 2006-10-11 | Mitsubishi Denki Kabushiki Kaisha | Elevator system |
NL1030867C2 (en) * | 2006-01-06 | 2007-07-09 | Melker B V De | Safety construction is for lift and comprises at least two uprights, at least one horizontal piece connected with uprights, devices for fixture of construction to lift cage, at least one bolting component for securing the construction |
WO2018078211A1 (en) * | 2016-10-25 | 2018-05-03 | Kone Corporation | Elevator and elevator car roof railing |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4619016B2 (en) * | 2004-03-01 | 2011-01-26 | 東芝エレベータ株式会社 | View elevator equipment platform |
JP4415025B2 (en) * | 2007-02-28 | 2010-02-17 | 株式会社日立ビルシステム | Elevator car handrail device |
EP3247664B1 (en) * | 2015-01-20 | 2019-10-23 | Inventio AG | Elevator |
JP6429742B2 (en) * | 2015-07-06 | 2018-11-28 | 三菱電機株式会社 | Elevator car equipment |
US10233054B2 (en) * | 2015-07-23 | 2019-03-19 | Mitsubishi Electric Corporation | Elevator car upper handrail apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0242704Y2 (en) * | 1986-04-30 | 1990-11-14 | ||
JPH04292386A (en) * | 1991-03-20 | 1992-10-16 | Toshiba Corp | Safety fence for hydraulic elevator cage |
JP4245209B2 (en) * | 1998-09-03 | 2009-03-25 | 東芝エレベータ株式会社 | Elevator |
-
2000
- 2000-12-28 JP JP2002554610A patent/JP4694096B2/en not_active Expired - Fee Related
- 2000-12-28 WO PCT/JP2000/009425 patent/WO2002053484A1/en active IP Right Grant
- 2000-12-28 EP EP00985997A patent/EP1346942B1/en not_active Expired - Lifetime
- 2000-12-28 CN CN00819195.6A patent/CN1289377C/en not_active Expired - Fee Related
- 2000-12-28 DE DE60040100T patent/DE60040100D1/en not_active Expired - Lifetime
Non-Patent Citations (2)
Title |
---|
No further relevant documents disclosed * |
See also references of WO02053484A1 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1386876A1 (en) * | 2001-04-17 | 2004-02-04 | Mitsubishi Denki Kabushiki Kaisha | Elevator cage and elevator |
EP1386876A4 (en) * | 2001-04-17 | 2004-06-23 | Mitsubishi Electric Corp | Elevator cage and elevator |
EP1710191A1 (en) * | 2004-01-30 | 2006-10-11 | Mitsubishi Denki Kabushiki Kaisha | Elevator system |
EP1710191A4 (en) * | 2004-01-30 | 2009-09-30 | Mitsubishi Electric Corp | Elevator system |
NL1030867C2 (en) * | 2006-01-06 | 2007-07-09 | Melker B V De | Safety construction is for lift and comprises at least two uprights, at least one horizontal piece connected with uprights, devices for fixture of construction to lift cage, at least one bolting component for securing the construction |
WO2018078211A1 (en) * | 2016-10-25 | 2018-05-03 | Kone Corporation | Elevator and elevator car roof railing |
Also Published As
Publication number | Publication date |
---|---|
CN1437556A (en) | 2003-08-20 |
DE60040100D1 (en) | 2008-10-09 |
JP4694096B2 (en) | 2011-06-01 |
WO2002053484A1 (en) | 2002-07-11 |
EP1346942A4 (en) | 2006-04-26 |
EP1346942B1 (en) | 2008-08-27 |
JPWO2002053484A1 (en) | 2004-04-30 |
CN1289377C (en) | 2006-12-13 |
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