WO2022207314A1 - Rollenführungsschuh zum führen einer aufzugskabine oder eines gegengewichts eines aufzugs - Google Patents
Rollenführungsschuh zum führen einer aufzugskabine oder eines gegengewichts eines aufzugs Download PDFInfo
- Publication number
- WO2022207314A1 WO2022207314A1 PCT/EP2022/056768 EP2022056768W WO2022207314A1 WO 2022207314 A1 WO2022207314 A1 WO 2022207314A1 EP 2022056768 W EP2022056768 W EP 2022056768W WO 2022207314 A1 WO2022207314 A1 WO 2022207314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide shoe
- roller
- roller guide
- lever element
- lever
- Prior art date
Links
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 10
- 239000002991 molded plastic Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000000725 suspension Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920003208 poly(ethylene sulfide) Polymers 0.000 description 3
- 229920006393 polyether sulfone Polymers 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- 229920006324 polyoxymethylene Polymers 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
- B66B7/048—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes including passive attenuation system for shocks, vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
- B66B7/046—Rollers
Definitions
- the invention relates to a roller guide shoe according to the preamble of claim 1.
- Elevators for transporting people and goods contain elevator cars that can be moved up and down an elevator shaft.
- the elevator cars can be moved in the vertical elevator shaft via suspension means, for example in the form of suspension ropes or suspension belts, by means of a drive unit.
- the elevator usually includes at least one counterweight, which is moved in opposite directions in the elevator shaft.
- the elevator car and the at least one counterweight run in guide rails.
- Guide shoes are usually used to guide elevator cars and counterweights, and the guide shoes can be designed as sliding guide shoes or roller guide shoes.
- roller guide shoes having three running rollers, such as are known from US Pat. No. 5,107,963 or US Pat. No. 7,562,749. Fuftfederem or helical compression springs and elastomeric springs are used in this roller guide shoes to achieve good driving comfort.
- This roller guide shoes are characterized by a complicated structure and large material requirements and are therefore expensive.
- roller guide shoe for guiding an elevator car or a counterweight of an elevator, which is characterized by a simple construction.
- the roller guide shoe should also be inexpensive and characterized by easy handling with regard to its assembly.
- the roller guide shoe for an elevator for transporting people or goods is used to guide an elevator car or a counterweight along a direction that extends in the direction of travel or catching guide rail.
- the roller guide shoe comprises at least one roller and a support structure with a preferably plate-like base section for fastening the roller guide shoe to the elevator car or to the counterweight and at least one web section preferably projecting at right angles from the base section.
- the base section can have fastening means, for example in the form of recesses for receiving fastening screws.
- the web portion is that part of the support structure associated with the roller.
- the carrier structure preferably has a web section for each roller for supporting and carrying the at least one roller.
- Roller guide shoes often have three rollers.
- the support structure would essentially comprise the base section already mentioned and three web sections projecting away from the base section for supporting and carrying the rollers.
- a lever element preferably designed as a bent part, is arranged between the support structure and the at least one roller.
- a bent part is understood to mean a component which can be subjected to bending. Bending refers to the flexural part being elastically flexed under load. With regard to the bent part, it is about the spring properties of the bent part and not how the part is manufactured.
- the lever element designed as a bending part can be arranged in the roller guide shoe in such a way that the lever element is bent, whereby a prestress is built up with which the roller is pressed against the guide rail.
- the at least one roller is freely rotatably mounted on a free end of the lever element.
- the roller guide shoe is characterized by a particularly simple structure, because the roller guide shoe essentially consists of only three components; namely from support structure, lever element and roller.
- a lever element designed as a bent part is arranged between the support structure and the at least one roller to apply a pretension for the roller in the operational state (or when the roller guide shoe is fully installed in the elevator), a sufficiently good ride comfort can be achieved. Since no additional springs or isolation elements such as helical compression springs and elastomeric springs have to be used, the present roller guide shoe has significant cost advantages over conventional roller guide shoes. Another advantage of this roller guide shoe is that it requires little maintenance during operation.
- the carrier structure with base section and web section can be designed as a one-piece molded body made of a plastic. Alternatively or additionally, the at least one lever element can also be designed as a one-piece molded body made of a plastic. Such moldings are easy and inexpensive to produce. The use of plastic also results in weight advantages compared to the comparatively heavy conventional roller guide shoes made from metal materials.
- the carrier structure can be made of a high-strength plastic material, e.g. PE, PP, PA, PS, PES, POM, PEEK, TPEs, whereby fibers can also be mixed into the plastic materials to reinforce the structure. It is particularly preferred to manufacture the support structure from a fiber-reinforced plastic.
- a high-strength plastic material e.g. PE, PP, PA, PS, PES, POM, PEEK, TPEs
- the carrier structure with base section and web section is an injection molded part and/or the lever element is an injection molded part.
- Injection molded parts are plastic parts produced in an injection molding process. In this way, a stable and torsion-resistant support structure can be created in which the base section and web section are monolithically connected to one another.
- the at least one roller can have an internal bearing bush and an outer wheel rim connected to the bearing bush in a freely rotatable manner, for example via a roller bearing or a plain bearing, to form the running body.
- the bearing bush and the wheel rim can be made of plastics.
- the wheel rim can be made up of several plastic components, for example, which can further improve driving comfort.
- the lever element can be inserted or snapped onto articulated cams arranged laterally on the web section, the articulated cam engaging in a recess on the lever element to specify an articulation axis.
- a locking member preferably designed as a projection
- the projection is molded onto the support structure and can easily be created by means of the aforementioned injection molding process. Instead of such projections monolithically connected to the support structure, however, separate locking members could also be used, which are attached to the support structure in a detachable or fixed manner.
- the locking member is a latching lug in which the lever arm is in latching engagement with the latching lug.
- the locking lug can contain a contact surface, which contacts the lever element when the locking connection is present, and a ramp-like run-on surface adjoining the contact surface. This ramp-like run-on surface can be inclined in such a way that when the lever element is mounted, the lever element can move along the run-on surface until the end position is reached or when the latching connection is present; the lever arm is now in contact with the contact surface, which finally causes the support.
- the lever member may have two lever arms defining a V-shape.
- a V-shaped lever element is particularly suitable as a bent part with which the preload for the roller can be applied.
- the two lever arms rigidly connected to each other, thanks to the V-shape, ensure spring properties in a simple way, thanks to which the bending to create the preload can be allowed.
- the V-shape is particularly favorable when the lever part is a plastic part.
- the lever element can then have reinforcing ribs or webs for reinforcement, which preferably run transversely and are preferably provided on a lateral outer contour.
- the lever element can have an axle stub formed laterally onto the lever element for receiving the roller.
- the roller can be inserted into the stub axle via the bearing bush be used.
- the roller guide shoe can have three rollers.
- the three rollers can consist of two rollers facing each other, which are used for guidance along the parallel lateral guide surfaces of the guide rail, and one roller, which is used for guidance along the front guide surface of the guide rail that connects the lateral guide surfaces to one another.
- a lever element is preferably assigned to each roller.
- the support structure for the roller guide shoe with three running rollers can have a preferably plate-like base section and three web sections which preferably project at right angles away from the base section.
- the web sections can form a “T” when viewed from above.
- the roller guide shoe has three rollers, it can be advantageous if at least two of the three lever elements and in particular the lever elements with the rollers, which are used for guiding along the lateral guide surfaces of the guide rail assigned to the rollers, each have two coaxial stub axles for accommodating rollers that are arranged on opposite sides of the lever element. Identical lever elements can thus be used for the two lever elements which are provided for lateral guidance. This has the advantage that the same tool can be used for injection molding, which has a favorable effect on the production costs.
- the support structure can preferably have web sections projecting at right angles away from the base section for supporting the rollers, the web sections being connected to one another via a connecting region.
- An emergency guide can be integrated in the carrier structure in such a way that an emergency guide channel extending along the web sections is provided in the connection area of the web sections.
- Such an emergency guide channel is characterized by excellent emergency guide properties thanks to its length for emergencies.
- the length of the emergency guide channel can essentially correspond to the external dimensions of the support structure in relation to the longitudinal direction.
- the emergency guide channel can be formed by channel wall sections, with the channel wall sections forming a U shape. In other words, the duct wall sections together form a U-shaped profile part body in a plan view.
- This U-shaped profile part body is preferably an integral part of the support structure and monolithically connected to the support structure.
- the web sections can each adjoin the channel wall sections at right angles.
- a channel wall section is consequently assigned to each web section, and the respective web sections open into associated channel wall sections.
- a further aspect of the invention can relate to an elevator car or a counterweight for an elevator, the elevator car or the counterweight being equipped with the roller guide shoes described above.
- a further aspect of the invention can relate to an elevator system with an elevator car and a counterweight which is connected to the elevator car via suspension means and can be moved in the opposite direction to the elevator car, the elevator car or the counterweight being equipped with such roller guide shoes for guiding the elevator car or the counterweight on guide rails.
- FIG. 1 is a perspective view of a roller guide shoe for an elevator
- FIG. 2 shows an exploded view of the roller guide shoe from FIG. 1.
- the roller guide shoe 1 shows a roller guide shoe for an elevator, denoted overall by 1 .
- the roller guide shoe 1 is used to guide an elevator car or a counterweight of the elevator along a guide rail (not shown here) extending in the longitudinal direction z.
- An elevator for a multi-story building may have an elevator shaft that accommodates an elevator car for transportation of people or goods is vertically movable up and down to individual floors.
- the elevator can be designed, for example, as a traction elevator system with a counterweight that can be moved in the opposite direction to the elevator car, with the suspension means usually being designed as suspension ropes or belts.
- the roller guide shoe 1 shown in FIG. 1 is particularly suitable for guiding along a guide rail that is formed by a T-profile (cf. FIG. 2 below).
- the T-profile can, for example, be a steel profile made by rolling.
- Such guide rails 2 have been known for a long time and are in use and widespread.
- the roller guide shoe 1 has three rollers 4, 4', 5. Each of the rollers 4, 4', 5 is in contact with a guide surface of the guide rail 2 and runs on it during a car journey.
- the roller guide shoe 1 further comprises a support structure 6 with a plate-like base section 7 and web sections 8, 9 projecting away from the base section 7.
- the base section 7 is used to attach the roller guide shoe 1 to the elevator car or to the counterweight.
- holes 27 are provided for fastening the roller guide shoe 1 in the base section 7, into which fastening screws 28 are passed or can be passed, with which the roller guide shoe 1 can be fastened to the guide rail 2 shown in outline in FIG.
- Metal sleeves (not shown) can be inserted into the holes 27 for reinforcement.
- the web sections 8, 9 are used to support and carry the rollers 4, 4', 5.
- the web sections 8 are used to carry the two rollers 4 and 4' facing each other.
- the roller 5 which is used for guiding along the guide surface of the guide rail 2 at the end, is assigned to the web section 9 .
- Lever elements 10, 11 are arranged between the support structure 6 and the respective rollers 4, 4', 5.
- the respective roller 4, 4', 5 is mounted in each case on a free end of the respective lever element 10, 11 so that it can rotate freely.
- the respective lever element 10, 11 has two lever arms 12, 13.
- the two lever arms 12, 13 are rigidly connected to one another, a recess 17 being provided centrally in the respective lever element 10, 11 between the lever arms 12, 13 in order to specify a joint axis.
- the lever element 10, 11 is inserted into a joint cam 16 which is arranged laterally on a web section 8, 9. After insertion, the joint cam 16 engages in the recess 17 on the lever element 10, 11.
- the lever element 10, 11 is designed as a bent part with which a preload can be applied at least in the operational state for the roller 4, 4', 5.
- the lever element 10, 11 is arranged in the roller guide shoe 1 in such a way that the lever element 10, 11 is bent, whereby a pretension is built up with which the roller 4, 4', 5 against the guide rail 2 is pressed.
- this bend is slight and hardly noticeable to the naked eye.
- the resilient properties which can be influenced above all by the effective length of the lever arm, the shape and the choice of material, the desired contact pressure for the rollers can be set quite precisely.
- the lever element 10, 11 and in particular the lever arm 12 associated with the roller is thereby elastically deformed.
- the roller guide shoe 1 can be designed in such a way that the bending that is necessary to bring about the prestressing is applied as far as possible above the joint axis, i.e. in the lever arm 12 between the joint axis and the roller, in order to avoid wear due to rotation in the joint cam 16 .
- roller guide shoe 1 manages without additional leather elements such as helical compression springs or leather means based on elastomers in order to ensure sufficiently good driving comfort.
- a further advantage is that bent parts of this type can be produced inexpensively in large numbers.
- the lever element 10, 11 designed as a bent part has a V-shaped configuration.
- the two lever arms 12, 13 define a V-shape.
- the lever arms 12, 13 enclose an angle of 120° to 150°.
- the "V" is therefore obtuse-angled.
- other shapes for the lever elements 10, 11 would also be conceivable.
- the lever element 10, 11 could have a curved shape or some other shape with one or optionally several curvatures.
- Each of the lever members 10, 11 has transverse and lateral Outer contour provided reinforcing ribs 21 for stiffening.
- the reinforcing ribs 21 can also be used so that the bending in the lever element for generating the prestress can also be optimally adjusted with them.
- the respective web sections 8, 9 of the support structure 6 have locking members 18 as an abutment for the respective lever element 10, 11.
- the locking member 18 is designed as a projection formed laterally on the support structure 6 and forms a stop to prevent a pivoting movement of the lever element 10, 11 about the joint axis.
- the locking member 18 is designed, for example, as a locking lug, in which the lower lever arm 13 of the lever element 10, 11 is in locking engagement with the locking lug.
- the carrier structure 6 has web sections 8, 9, which project at right angles away from the plate-like base section 7, for carrying the rollers 4, 4', 5.
- the web sections 8, 9 form a T when viewed from above.
- the web sections 8, 9, which protrude in a T-shape from the base section 7, are connected to one another via a connection area, with an emergency guide being integrated in this connection area in such a way that it runs along the web sections 8, 9 extending Not Installationskanal 25 forms.
- channel wall sections 26 are provided, which together form a U-shaped profile part body when viewed from above.
- the respective web sections 8, 9 adjoin the associated channel wall sections 26 at right angles.
- a metallic insert (not shown here) can be provided to reinforce the emergency guide channel 25 .
- This insert can be a metal part with a U-shaped cross section, which is inserted into the emergency guide channel and rests against the channel wall sections 26 after insertion.
- the carrier structure 6 is designed as a one-piece molded body made of a plastic.
- the carrier structure 6 is particularly preferably manufactured as an injection molded part.
- the carrier structure 6 can be made from a high-strength plastic material, for example from PE, PP, PA, PS, PES, POM, PEEK, TPEs, with the carrier structure 6 in particular being made from a fiber-reinforced plastic. In principle, however, other materials would also be conceivable.
- the support structure 6 could also be made of metallic materials, for example an aluminum casting.
- the lever elements 10, 11 are also one-piece moldings made of plastic. In particular, when the lever elements 10, 11 are plastic parts produced by injection molding, there are numerous advantages. Injection molded parts can be manufactured with high precision and cheaply.
- Comparatively complicated lever shapes can also be easily produced in this way.
- the bending and prestressing for the roller 4, 4′, 5 can be generated or adjusted via the geometry and the material of the lever element 10, 11, for which injection molded parts are particularly well suited.
- Plastics such as PE, PP, PA, PS, PES, POM, PEEK, TPEs, for example, can be used for the lever element 10, 11.
- Fiber-reinforced plastics, such as glass-fiber-reinforced plastic, are particularly suitable as the material. This material has excellent fatigue strength and ensures the spring property of the lever member for a long time.
- roller guide shoe 1 Since, in contrast to roller guide shoes of conventional design, no additional spring elements (eg helical compression springs) have to be used, the roller guide shoe 1 consists of few components, which means that it is easy to assemble and has considerable cost advantages.
- the bending part or the lever element 10, 11 of the roller guide shoe 1 assumes the combined function of a roller carrier and a spring element.
- the spring constant of the lever element 10, 11 can be determined by the lever structure.
- roller guide shoe 1 In principle, a metallic variant of the roller guide shoe 1 would also be conceivable.
- the support structure 6 could be made of metallic materials, for example as an aluminum casting.
- the lever elements 10, 11 could also be made of aluminum, for example.
- the three rollers 4, 4', 5 are presently identically designed rollers. However, it is also conceivable that different rollers 4, 4', 5 are used. In particular, the roller 5 could be designed differently from the rollers 4 and 4'.
- the respective roller 4, 4', 5 comprises an inner bearing bush 14 and an outer wheel rim 15 which is freely rotatably connected to the bearing bush via a roller bearing. Both the bearing bush 14 and the wheel rim 15 are preferably made of plastics.
- the wheel rim can be made from one plastic component or possibly from several plastic components made from different plastics be constructed. These components can be applied in multi-phase injection molding processes.
- the wheel rim 15 can be configured as a 2K injection molded part, for example. An outer component of the wheel rim 15 would generally have a greater hardness than the inner component.
- the roller guide shoe 1 is made up of a few components. Essentially, the roller guide shoe 1 consists of only three components, namely the support structure 6, lever element 10, 11 and roller 4, 4', 5. The three lever elements 10, 11 are designed almost identically. The two lever elements 10 for the rollers 4, 4' are identical, the lever element 11 for the roller 5 differs from the lever elements 10 only in that an axle stub 22 is only provided on one side for reasons of space. In principle, however, this lever element 11 could also be designed in the same way as the lever elements 10 with two axle stubs 22, 23 (e.g. in the case of a roller guide shoe with rollers with a larger diameter).
- Fig. 2 also shows how the locking lug for forming the locking member 18 is designed.
- the latching lug has a contact surface 19 which contacts the lever element 10, 11 when the latching connection is present, and thus provides a stop.
- a ramp-like ramp surface 20 adjoins the contact surface 19 .
- the ramp surface 20 is inclined in such a way that when the lever element is mounted, the relevant lever arm 13 of the lever element 10, 11 can move along the ramp surface of the latching lug until the end position is reached, in which the lever element 10, 11 or its lever arm with the latching lug is in locking engagement.
- the assembly of the roller guide shoe 1 can take place as follows: First, the support structure 6 is attached to the elevator car or to the counterweight, for example by means of screws 28 attached to it. Then the lever elements 10, 11 already provided with the rollers 4, 4', 5 are mounted on the support structure 6. The rollers 4, 4′, 5 can already be pre-assembled or, if necessary, can only be attached to the lever elements 10, 11 at the construction site. To mount the lever elements 10, 11 on the support structure 6, they are placed on the support structure 6, snapped or pushed onto the joint cam 16 in the region of the pivot axis by axially fitting their recess 17 and latching in the locking member. To secure against accidental loosening of the lever elements 10, 11, circlips, but also nuts, cotter pins, etc. can be used, which are attached to the articulated cam 16. Securing means could, for example, also be latching projections on the circumference of the articulated cam 16, over which the lever elements 10, 11 are snapped.
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22715061.2A EP4313832A1 (de) | 2021-03-30 | 2022-03-16 | Rollenführungsschuh zum führen einer aufzugskabine oder eines gegengewichts eines aufzugs |
US18/551,887 US20240174489A1 (en) | 2021-03-30 | 2022-03-16 | Roller guide shoe for guiding an elevator car or a counterweight of an elevator |
CN202280025817.7A CN117098718A (zh) | 2021-03-30 | 2022-03-16 | 用于引导电梯的电梯轿厢或对重的滚轮导靴 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21165967 | 2021-03-30 | ||
EP21165967.7 | 2021-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022207314A1 true WO2022207314A1 (de) | 2022-10-06 |
Family
ID=75302354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/056768 WO2022207314A1 (de) | 2021-03-30 | 2022-03-16 | Rollenführungsschuh zum führen einer aufzugskabine oder eines gegengewichts eines aufzugs |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240174489A1 (de) |
EP (1) | EP4313832A1 (de) |
CN (1) | CN117098718A (de) |
WO (1) | WO2022207314A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147739A (en) * | 1974-10-22 | 1976-04-23 | Mitsubishi Electric Corp | Idotaino annaisochi |
US5107963A (en) | 1990-01-29 | 1992-04-28 | Norcast Corporation | Spring loaded guide rollers |
US7562749B2 (en) | 2004-05-04 | 2009-07-21 | Elevator Safety Company | Roller guide |
WO2013170532A1 (zh) * | 2012-05-14 | 2013-11-21 | 杭州沪宁电梯配件有限公司 | 滚轮导靴 |
US20200317472A1 (en) * | 2019-04-03 | 2020-10-08 | Elevator Safety Company | Elevator guide |
-
2022
- 2022-03-16 US US18/551,887 patent/US20240174489A1/en active Pending
- 2022-03-16 CN CN202280025817.7A patent/CN117098718A/zh active Pending
- 2022-03-16 WO PCT/EP2022/056768 patent/WO2022207314A1/de active Application Filing
- 2022-03-16 EP EP22715061.2A patent/EP4313832A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147739A (en) * | 1974-10-22 | 1976-04-23 | Mitsubishi Electric Corp | Idotaino annaisochi |
US5107963A (en) | 1990-01-29 | 1992-04-28 | Norcast Corporation | Spring loaded guide rollers |
US7562749B2 (en) | 2004-05-04 | 2009-07-21 | Elevator Safety Company | Roller guide |
WO2013170532A1 (zh) * | 2012-05-14 | 2013-11-21 | 杭州沪宁电梯配件有限公司 | 滚轮导靴 |
US20200317472A1 (en) * | 2019-04-03 | 2020-10-08 | Elevator Safety Company | Elevator guide |
Also Published As
Publication number | Publication date |
---|---|
US20240174489A1 (en) | 2024-05-30 |
EP4313832A1 (de) | 2024-02-07 |
CN117098718A (zh) | 2023-11-21 |
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