WO2012097994A1 - Hangschloss zum sichern und überwachen eines schalters - Google Patents
Hangschloss zum sichern und überwachen eines schalters Download PDFInfo
- Publication number
- WO2012097994A1 WO2012097994A1 PCT/EP2012/000238 EP2012000238W WO2012097994A1 WO 2012097994 A1 WO2012097994 A1 WO 2012097994A1 EP 2012000238 W EP2012000238 W EP 2012000238W WO 2012097994 A1 WO2012097994 A1 WO 2012097994A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- padlock
- rfid transponder
- lock
- housing
- switch
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool
Definitions
- the invention relates to a padlock for securing and monitoring a switch of an industrial plant.
- the invention further relates to a safety and monitoring system for a switch of an industrial plant comprising at least one padlock.
- a special area of application of a padlock is in the field of occupational safety.
- the aforesaid switch is typically a power supply switch, for example, a main electrical switch of a controller or an industrial plant power supply (e.g., power switch box).
- the switch mentioned may be, for example, a valve of a liquid or gas line.
- each maintenance person hangs before the start of their work on the said switch or on a Switch assigned locking device a padlock and locks it.
- the switch is thereby secured in its OFF position, ie the switch can not be accidentally returned to an ON position by another person.
- the maintenance person finishes their work they unlock their padlock and release it from the switch.
- Each maintenance person is usually assigned his own individual padlock (or several individual padlocks).
- Lockout lock called.
- the document US 5 449 867 shows such a securing of an electrical toggle switch by means of a padlock. From the document US 3 171 908 it is known to secure the position of a rotary switch by means of a padlock.
- multiple receptacles e.g., eyelets
- a securing claw can be used, which is hooked into the relevant eyelet of the switch or the associated locking device and in turn has several hooks for a respective padlock. Only when the last padlock has been removed from the safety claw, the safety claw of the
- the design of the lock housing made of plastic results in a particularly lightweight padlock, which is advantageous when used as a lockout lock, since the maintenance personnel sometimes carry several lockout locks simultaneously.
- a plastic housing may also contribute to a desired electrical insulation.
- by using a plastic housing a particularly simple way of color marking the padlock.
- the lower stability of a plastic housing compared to a metal lock housing is not a serious disadvantage in a lockout lock, since the padlock serves only to secure a switch against unintentional actuation, but not, for example, as theft protection.
- Such a lockout lock with a plastic housing is known, for example, from the documents US Pat. No. 7,278,283 and US Pat. No. 5,755,121. These are simple, purely mechanical padlocks.
- This object is achieved by a padlock with the features of claim 1, and in particular by a padlock for securing and monitoring a switch of an industrial plant with a lock housing made of plastic, further comprising a bracket which on the
- Lock housing is held displaceably, and with a lock cylinder which is arranged in the lock housing and can be selectively brought from an open position to a locking position to lock the bracket to the lock housing, wherein in the lock housing, an RFID transponder is arranged.
- the padlock used can have a simple mechanical structure, since the RFID transponder can be used as a separate, autonomous unit in the padlock.
- the padlock can thus have a purely mechanical locking device, which is independent of the electronics of the RFID transponder. Due to the arrangement of the RFID transponder in a plastic housing, radio communication with an associated reading device can take place essentially undisturbed. At the same time, the RFID transponder is reliably protected against damage and contamination. This is an important aspect when using the padlock as lockout lock, as the
- Hanging may be exposed to heavy impact by impact and / or abrasion when it is placed on a switch industrial plant and even while it is carried when not in use by the maintenance person (for example, hanging on a belt).
- the arrangement of the RFID transponder in the lock housing can be done in many ways.
- the lock housing form an outer shell, in which the RFID transponder is integrated, in particular by encapsulation or encapsulation.
- An RFID transponder is a receiving and transmitting device which receives an interrogation signal at a predetermined radio frequency and then transmits a predetermined identification signal (for example an identification number coded in a radio signal).
- a predetermined identification signal for example an identification number coded in a radio signal.
- This method is called Radio Frequency Identification (English: radio-frequency identification).
- the RFID transponder has at least one antenna, an electronic circuit coupled thereto and a nonvolatile memory in which the predetermined identification number is stored. If an associated reading device generates an electromagnetic alternating field with a suitable frequency and transmits it to the RFID transponder (interrogation signal), the antenna of the RFID transponder receives the electromagnetic energy of the alternating field, whereby the transmission of said
- Identification signal (again via the antenna) is triggered.
- the electronic circuit of the RFID transponder does not have its own power supply, but he can remove the required electrical energy of the received alternating field.
- the emitted identification signal is impressed by field weakening in such a way in the alternating field generated by the reader that the reader can decode the identification signal of the RFID transponder.
- Such an RFID transponder is known, for example, from the document US Pat. No. 7,205,899.
- the RFID transponder is enclosed on all sides within the lock housing. This ensures a particularly effective protection of the RFID transponder from mechanical damage and / or contamination.
- the all-round enclosing of the RFID transponder is preferably carried out by interaction of the lock housing with another part of the padlock, in particular with a further housing part (for example inner housing or outer housing part).
- the lock cylinder of the padlock has a longitudinal shape with a longitudinal axis, which is typically the axis of rotation of a rotatable cylinder core of the lock cylinder equivalent.
- the lock cylinder can be designed, for example, as a profile cylinder, in particular as an exchangeable profile cylinder.
- the RFID transponder is curved in this embodiment with respect to the longitudinal axis of the lock cylinder. In other words, the RFID transponder extends in a curved manner (in a normal plane to the entire longitudinal axis) around the closing blind in a cross-section. This results in a particularly advantageous angular characteristic of the RFID transponder, ie, the RFID transponder can interact with a dedicated reader in a wide range of angles.
- reliable communication with an associated RFID reader can thereby be achieved independently of whether the RFID reader faces the front or the back of the padlock.
- the lock cylinder which is typically made of metal, does not prove to be disturbing because the lock cylinder can be arranged inside the curvature formed by the RFID transponder, ie the RFID transponder can completely or partially surround the lock cylinder in a circumferential manner.
- the RFID transponder may extend along at least part of the length of the lock cylinder and along at least part of the circumference of the lock cylinder.
- the RFID transponder does not have to touch the lock cylinder, but is preferably spaced from it (in the radial direction relative to the longitudinal axis of the lock cylinder).
- a particularly good reception and transmission characteristic of the RFID transponder is achieved, while the placement of the RFID transponder in the lock housing in the manner of a lock cylinder "wound" unit can be realized structurally simple and with minimal space requirements. It is advantageous if the RFID transponder is arranged at a distance from the lock cylinder.
- the RFID transponder can be accommodated in a form-fitting manner in a recess of the lock housing or of the further housing part provided in order to ensure a substantially backlash-free fit of the RFID transponder in the lock housing.
- said further housing part it is preferred if this also consists of plastic. As a result, a large range and a wide angle characteristic of the RFID transponder still become better supported.
- said housing part made of metal, provided electrical insulation is ensured by the components of the RFID transponder (for example by a plastic covering of the RFID transponder).
- the lock housing and said further housing part are secured to each other by means of a detachable securing device (for example a screw), wherein the RFID transponder is caught between the lock housing and the housing part, as long as the lock housing and the housing part secured together by means of said securing means are.
- a detachable securing device for example a screw
- the RFID transponder is reliably secured captive in the lock housing. Nevertheless, the RFID transponder can be exchanged later, for example to assign a different identification number to the relevant lock-out lock.
- the said securing device is only accessible if the authorized user has brought the locking cylinder into the opening position by means of an associated key. This makes it possible for the authorized user to exchange the RFID transponder as needed. However, as long as the lock housing and the housing part are secured together by means of said securing means and the padlock is locked, the RFID transponder is caught unreachable between the lock housing and the housing part, so that in terms of
- a safety and monitoring system for a switch an industrial system comprising at least one padlock with a plastic lock housing and with an arranged in the lock housing RFID transponder, the padlock on the switch of the industrial plant can be attached, wherein the security and monitoring system further comprises a permanently fixed in the vicinity of the switch reference RFID transponder and a mobile RFID reader, which is adapted to the RFID transponder of the padlock and in the environment of the switch fixed reference RFID transponder read.
- said RFID reader can be designed to store an identification information read from the RFID transponder of the lockout lock and an identification information read from the reference RFID transponder together with a time information (date / time), in particular a non-volatile memory.
- the associated time information can be derived, for example, from an integrated clock of the RFID reader.
- a safety and monitoring system for a switch an industrial system having at least one padlock with a lock housing made of plastic and with an arranged in the lock housing RFID transponder, the padlock on the switch of the industrial plant can be attached, and wherein the backup and monitoring system has a permanently mounted in the vicinity of the switch RFID reader, which is adapted to read the RFID transponder of the padlock at predetermined times.
- an RFID reader permanently mounted near the switch can detect the presence of one or more lockout locks on the switch by automatically checking at regular time intervals.
- the permanently mounted RFID reader can be designed to store an identification information read from the RFID transponder of the lockout lock together with time information, in particular in a nonvolatile memory. hereby is a particularly reliable and complete documentation of possible, at what times which lockout locks were on the switch.
- the information read from the RFID transponder of the lock-out lock can be transmitted to a central memory and / or evaluation device.
- the central storage and / or evaluation device can receive the signals from a plurality of stationary RFID readers which are assigned to various switches of the industrial installation.
- the respective padlock may be developed according to one of the embodiments which have also been explained above for a lockout lock according to the invention.
- Fig. 1 shows a padlock in an exploded view.
- Fig. 2 shows a padlock in a cross-sectional view.
- Fig. 3 shows an inner housing with RFID transponder in one
- FIG. 4 shows a schematic representation of a safety and monitoring system for a switch of an industrial plant.
- Fig. 5 shows a schematic representation of another security and monitoring system.
- the padlock shown in Fig. 1 has a lock body 11 and a bracket 13.
- the bracket 13 has a U-shape with a shorter leg and a longer leg.
- an inwardly facing locking recess 15 is formed.
- an annular groove 17 is further provided with an abutment head 19 adjacent thereto.
- the lock body 11 has a lock housing 21 and a further housing part, which is formed in the embodiment shown as an inner housing 23.
- the lock housing 21 and the inner housing 23 are made of plastic.
- the inner housing 23 can be inserted into the lock housing 21 and fixed to the lock housing 21 by means of a locking screw 25, as will be explained below.
- the lock housing 21 and the inner housing 23 accommodate a lock cylinder 27 and a locking mechanism 29, via which the lock cylinder 27 cooperates with the bracket 13.
- the lock cylinder 27 has a cylinder core 31 with a keyway 33.
- the cylinder core 31 is rotatably supported within a cylinder housing 35 with respect to an axis of rotation A (FIG. 2), wherein a rotary operation is only possible when an associated key is inserted into the keyway 33 ,
- At the back of the cylinder core 31 has a driver extension 37th
- the locking mechanism 29 comprises a rotary latch 39 and two blocking balls 41.
- the rotary latch 39 has a substantially hollow-cylindrical cylindrical shape with an inside engagement lug 43, which allows a rotationally fixed coupling with the driver extension 37 of the lock cylinder 27.
- the rotary latch 39 On its outside, the rotary latch 39 has two receiving recesses 45, which can partially receive the blocking balls 41 when the closing cylinder 27 and thus the rotary latch 39 are open.
- the rotary latch 39 Surrounding respectively adjacent to the receiving recesses 45, the rotary latch 39 forms locking sections 47, by means of which the blocking balls 41 with the locking recesses 15 of the bracket 13 can be held in blocking engagement.
- the padlock shown in Fig. 1 allows by appropriate operation of the lock cylinder 17 selectively locking the bracket 13 on the lock body 11 (locking position of the lock cylinder 27) or the release of the shorter leg of the bracket 13 from the lock body 11 (open position of the lock cylinder 27), for example Insert the bracket 13 in an eyelet or remove it from this.
- the padlock shown is particularly suitable for use as a lockout lock.
- an RFID within the lock housing 21, an RFID
- Transponder 48 is arranged, which is formed in the embodiment shown here as a flexible unit, the antenna and electronic components are accommodated in a flexible film.
- the RFID transponder 48 is thus curved in cross-section U-shaped and with respect to the longitudinal axis of the lock cylinder 27 (rotation axis A of FIG. 2).
- the RFID transponder 48 is in this case arranged radially spaced from the lock cylinder 27.
- the RFID transponder 48 is thus functionally independent of the lock cylinder 27, the locking mechanism 29 and the bracket 13, ie the mode of operation and the functionality of the RFID transponder 48 are independent of the position and the operability of the lock cylinder 27, the lock mechanism 29, and the bracket 13.
- the generation of an identification signal by the RFID transponder 48 is solely in response to an interrogation signal from an RFID reader 69, 79, as explained below.
- FIG. 2 shows a cross-sectional view of a possible embodiment of a padlock according to FIG. 1 in the assembled state and with the bracket 13 locked.
- the inner housing 23 is inserted into the lock housing 21 and fixed to the lock housing 21 by means of the securing screw 25 , Thereby are the
- the fastening screw 25 cooperates with a nut 49 which is non-rotatably inserted into the inner housing 23.
- the fastening screw 25 is inserted into a bracket receiving channel 51 of the lock housing 21, which is closed by the bracket 13 when the bracket 13 - as shown in Fig. 2 - on
- Lock body 11 is locked.
- the nut 49 is covered by a cover 53. If the lock cylinder 27 brought into the open position and the shorter leg of the bracket 13 is removed from the strap receiving channel 51, the locking screw 25 can be released again from the nut 49 to remove the inner housing 23 of the lock housing 21. As a result, therefore, the RFID transponder 48 can also be replaced later.
- FIG. 2 shows a state of the padlock in which the bracket 13 is locked and thus secured against removal from the lock body 11.
- the locking portions 47 of the rotating bracket 39 hold the blocking balls 41 in locking engagement with the locking recesses 15 of the bracket 13.
- an opening rotary operation by means of an associated key 55 is required.
- the driver extension 37 of the lock cylinder 27 and the rotary latch 39 are rotated by 90 ° so that a respective receiving recess 45 of the rotary latch 39 is rotated into the region of the blocking balls 41.
- the blocking balls 41 can thus escape from the locking recesses 15 of the bracket 13.
- the bracket 13 can now be pulled axially out of the lock body 11 until the stopper head 19 of the longer stirrup leg strikes against the respective blocking ball 41.
- the shorter leg of the bracket 13 protrudes now already out of the lock body 11.
- the bracket 13 can now be rotated about the longitudinal axis of the longer stirrup leg. A renewed locking of the bracket 13 on the lock body 11 takes place in the reverse order.
- FIG. 3 shows a perspective view of a possible embodiment of an inner housing 23 of the padlock according to FIG. 1 or FIG. 2. Shown is the U-shaped RFID transponder 48, which is inserted into an outer recess 57 of the inner housing 23 in a form-fitting manner. in this connection surrounds the RFID transponder 48 at a certain radial distance a central recess 59 of the inner housing 23, which is provided for the positive reception of a lock cylinder 27 in the assembled state of the padlock.
- the RFID transponder then extends along a part of the length of the lock cylinder 27 and along a part of the circumference of the lock cylinder 27, viewed in radial projection with respect to the axis of rotation A according to FIG. 2.
- Fig. 4 shows a fuse and monitoring system for a switch 61 of an industrial plant.
- This safety and monitoring system comprises a padlock 63, the bracket 13 is mounted in a blocking device 65 of the switch 61, for example in an eyelet.
- the padlock 63 has an RFID transponder 48, as explained in connection with FIGS. 1 to 3.
- the securing and monitoring system according to FIG. 4 further comprises a reference RFID transponder 67 permanently mounted on the switch 61 or in the vicinity of the switch 61.
- the securing and monitoring system comprises a mobile RFID reading device 69 a transmitting and receiving antenna 71, a control and evaluation circuit 73 coupled thereto, a nonvolatile memory 75 and a power supply device 77 (eg, an electric battery).
- an interrogation signal can be transmitted, which is an electromagnetic alternating field of a predetermined frequency.
- both the RFID transponder 48 of the padlock 63 and the reference RFID transponder 67 emit a respective identification signal, which contains an individual identification information for the respective RFID transponder 48 or 67.
- the respective identification signal may be received and decoded by the mobile RFID reader 69.
- the respectively received and decoded identification information is stored in the non-volatile memory 75, preferably together with an assigned time information.
- the switch 61 can be monitored to determine whether at a time when the RFID reader identifies the reference RFID transponder 67, the
- FIG. 5 shows a modified embodiment of a fuse and monitoring system for a switch 61 of an industrial plant compared to FIG. 4.
- This securing and monitoring system also includes a padlock 63 with an RFID transponder 48, as explained in connection with FIGS. 1 to 3.
- the bracket 13 of the padlock 63 is mounted in a blocking device 65 of the switch 61.
- a stationary RFID reader 79 is arranged on the switch 61 or in the vicinity of the switch 61, ie the RFID reader 79 is located on the switch 61 or in the vicinity of the switch 61 for its operation permanently attached.
- an interrogation signal can be automatically triggered, which is converted in the RFID transponder 48 of the padlock 63 into an identification signal.
- This identification signal which is characteristic for the RFID transponder 48 and thus for the padlock 63, can be received and decoded by the stationary RFID reader 79.
- the identification information obtained therefrom is then stored in a non-volatile memory 75 of the stationary RFID reader 79, preferably together with time information.
- the fuse state of the switch 61 is monitored so that it can be checked by reading the non-volatile memory 75, which padlock 63 has been arranged on the switch 61 or arranged at an earlier time.
- Plastic may be provided, in particular in the manner of an open housing with an associated lid, or in the manner of a two-piece Lock housing with a central dividing plane as known from the aforementioned document US 5,755,121.
- a multi-part lock housing made of plastic may optionally be additionally provided an inner housing.
- a padlock with a U-shaped bracket for example, a padlock with a curved turntable can be used.
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- Testing And Monitoring For Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280006113.1A CN103493162B (zh) | 2011-01-20 | 2012-01-19 | 用于保护与监测开关的挂锁 |
BR112013018243-1A BR112013018243B1 (pt) | 2011-01-20 | 2012-01-19 | Cadeado para prender e monitorar um interruptor de uma planta industrial |
DK12701447.0T DK2649627T3 (en) | 2011-01-20 | 2012-01-19 | LOCK FOR SECURING AND MONITORING A CONTACT |
EP12701447.0A EP2649627B1 (de) | 2011-01-20 | 2012-01-19 | Hangschloss zum sichern und überwachen eines schalters |
CA2824844A CA2824844C (en) | 2011-01-20 | 2012-01-19 | Padlock for securing and monitoring a switch |
AU2012208746A AU2012208746B2 (en) | 2011-01-20 | 2012-01-19 | Padlock for securing and monitoring a switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011009011.8A DE102011009011B4 (de) | 2011-01-20 | 2011-01-20 | Hangschloss zum Sichern und Überwachen eines Schalters |
DE102011009011.8 | 2011-01-20 |
Publications (1)
Publication Number | Publication Date |
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WO2012097994A1 true WO2012097994A1 (de) | 2012-07-26 |
Family
ID=45554618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/000238 WO2012097994A1 (de) | 2011-01-20 | 2012-01-19 | Hangschloss zum sichern und überwachen eines schalters |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP2649627B1 (de) |
CN (1) | CN103493162B (de) |
AU (1) | AU2012208746B2 (de) |
BR (1) | BR112013018243B1 (de) |
CA (1) | CA2824844C (de) |
DE (1) | DE102011009011B4 (de) |
DK (1) | DK2649627T3 (de) |
WO (1) | WO2012097994A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013207268A1 (de) * | 2013-04-22 | 2014-10-23 | ABUS August Bremicker Söhne KG | Hangschloss |
DE102014106228A1 (de) | 2014-05-05 | 2015-11-05 | ABUS August Bremicker Söhne KG | Verschlusskasten |
CN110889915A (zh) * | 2019-11-08 | 2020-03-17 | 深圳供电局有限公司 | 一种无线密码挂锁 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8820125B1 (en) * | 2013-06-05 | 2014-09-02 | Moshe Dolev | Padlock assembly |
US10210682B2 (en) | 2013-09-05 | 2019-02-19 | Rockwell Automation Technologies, Inc. | Systems and methods for improving a sensing ability of an interlock switch system |
CA2889127C (en) | 2014-04-22 | 2017-01-03 | Movex Innovation Inc. | Locking system for power line sectioning unit |
DE102018109746A1 (de) * | 2018-04-23 | 2019-10-24 | ABUS August Bremicker Söhne KG | Hangschloss zum sichern eines schalters |
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2011
- 2011-01-20 DE DE102011009011.8A patent/DE102011009011B4/de active Active
-
2012
- 2012-01-19 BR BR112013018243-1A patent/BR112013018243B1/pt active IP Right Grant
- 2012-01-19 CA CA2824844A patent/CA2824844C/en active Active
- 2012-01-19 DK DK12701447.0T patent/DK2649627T3/en active
- 2012-01-19 WO PCT/EP2012/000238 patent/WO2012097994A1/de active Application Filing
- 2012-01-19 AU AU2012208746A patent/AU2012208746B2/en active Active
- 2012-01-19 EP EP12701447.0A patent/EP2649627B1/de active Active
- 2012-01-19 CN CN201280006113.1A patent/CN103493162B/zh active Active
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BR112013018243B1 (pt) | 2021-11-16 |
EP2649627B1 (de) | 2018-03-14 |
DE102011009011A1 (de) | 2012-07-26 |
CN103493162B (zh) | 2016-08-10 |
AU2012208746A1 (en) | 2013-08-01 |
DE102011009011B4 (de) | 2023-10-05 |
DK2649627T3 (en) | 2018-05-22 |
CA2824844A1 (en) | 2012-07-26 |
CN103493162A (zh) | 2014-01-01 |
CA2824844C (en) | 2018-03-20 |
AU2012208746B2 (en) | 2016-06-23 |
BR112013018243A2 (pt) | 2016-11-08 |
EP2649627A1 (de) | 2013-10-16 |
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