Patent SG-11201407080W-A (SG)
Title: Safety arrangement of an elevator
Inventor: KATTAINEN ARI
IPC: B66B5/02
Filed: 2013-05-20
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 5 December 2013 (05.12.2013) WIPOIPCT (10) International Publication Number WO 2013/178873 A1 (51) International Patent Classification: B66B 5/02 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/FI2013/050542 20 May 2013 (20.05.2013) Finnish English (30) Priority Data: 20125596 31 May 2012 (31.05.2012) FI (71) Applicant: KONE CORPORATION [FI/FI]; Kartanontie 1, FI-00330 Helsinki (FI). (72) Inventors: KATTAINEN, Ari; Tiilitehtaantie 9, FI-05830 Hyvinkaa (FI). RAASSINA, Pasi; Rannimaentie 68, FI- 04660 Numminen (FI). SAARIKOSKI, Tapio; Pikku- lukontie D 3 43, FI-05830 Hyvinkaa (FI). STOLT, Lauri; Haagan urheilutie 13 A 16, FI-00320 Helsinki (FI). NA- KARI, Arto; Kynnostie 6, FI-05810 Hyvinkaa (FI). KAL- LIONIEMI, Antti; Kaarretie 26, FI-05400 Jokela (FI). (74) Agent: KONE CORPORATION/PATENT DEPART­ MENT; P.O. Box 677, FI-05801 Hyvinkaa (FI). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, [Continued on next page] 5 - 11 \ f \ ' 15 - 16 m i> oo 00 l> T-H rn T-H o CJ (54) Title: SAFETY ARRANGEMENT OF AN ELEVATOR (57) Abstract: The invention relates to a safety arrangement of an elevator, which comprises sensors (27, 28) configured to indicate functions that are critical from the viewpoint of the safety of the elevator, and also a safety circuit (20, 34), with which the data formed by the aforementioned sensors (27, 28) indicating the safety of the elevator is read. The safety arrangement comprises a drive device (1) for driving the hoisting machine of the elevator. The drive device (1) comprises DC bus (2 a A, 2B), and also a motor bridge (3) connected to the DC bus for the electricity supply of the elev­ ator motor (6). The motor bridge (3) comprises high- side (4A) and low-side (4B) switches for supplying electric power from the DC bus (2A, 2B) to the elevator motor (6) when driving with the elevator motor (6). and also from the elevator motor (6) to the DC bus (2A, 2B) when braking with the el­ evator motor (6). The drive device also comprises a control circuit (5) of the motor bridge, with which control circuit the operation of the motor bridge (3) is controlled by producing control pulses in the control poles of the high-side (4A) and low-side (4B) switches of the motor bridge, an input circuit (12) for a safety signal (13), which safety signal ( 13) can be disconnected/connected from outside the drive device (1), and also drive prevention logic (15), which is connected to the input circuit (12) and is configured to prevent the passage of control pulses to the control poles of the high- side (4 A) and/or low-side (4B) switches of the motor bridge when the safety signal ( 13) is disconnected. The signal conductor of the safety signal (13) is wired from the safety signal (20, 34) to the drive device (1), and the safety circuit (20, 34) com­ prises means (14) for disconnecting/connecting the safety sig­ nal (13). The safety circuit (20, 34) is arranged to bring the elevator into a state preventing a run by disconnecting the safety signal ( 13), and the safety circuit (20, 34) is arranged to remove the state preventing a run by connecting the safety signal (13). 2A 26 2B Fig. 1 WO 2013/178873 Al I lllll llllllll II llllll III lllll lllll III III III lllll lllll llll lllll lllll lllll llll lllllll llll llll TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — of inventorship (Rule 4.17 (iv)) Published: — with international search report (Art. 21(3))