EP3927585A1 - Frein électromagnétique axial - Google Patents

Frein électromagnétique axial

Info

Publication number
EP3927585A1
EP3927585A1 EP20716159.7A EP20716159A EP3927585A1 EP 3927585 A1 EP3927585 A1 EP 3927585A1 EP 20716159 A EP20716159 A EP 20716159A EP 3927585 A1 EP3927585 A1 EP 3927585A1
Authority
EP
European Patent Office
Prior art keywords
brake
ring
axial
electromagnetic
electromagnetic brake
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.)
Pending
Application number
EP20716159.7A
Other languages
German (de)
English (en)
Inventor
Frantisek KARNOVSKÝ
Petr TOMÁS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mz Liberec AS
Original Assignee
Mz Liberec AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mz Liberec AS filed Critical Mz Liberec AS
Publication of EP3927585A1 publication Critical patent/EP3927585A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/748—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on electro-magnetic brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
    • F16D67/02—Clutch-brake combinations
    • F16D67/06—Clutch-brake combinations electromagnetically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets
    • F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F16D65/186—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with full-face force-applying member, e.g. annular

Definitions

  • the invention relates to an axial electromagnetic brake, in particular to the axial electromagnetic brake of the rotatable arm of a ceiling tripod arranged at the conjunction of the supporting axis and the rotatable arm of the ceiling tripod, on which are arranged supported medical apparatus and instruments.
  • the electromagnetic brake comprises an armature and a core in the form of a ring having an axial cross-section in an E-shape, provided with a winding.
  • the core ring is composed of at least one moulding of sintered soft ferromagnetic material, with the winding being fastened in the grooves of the friction ring core by a grouting compound.
  • a static electromagnetic brake consisting of a bearing shield with an outer half-ring and an inner half-ring, to which the armature holder adjoins across an air gap.
  • a nut is screwed into the shaft of the electric motor, on which the first spring is supported, its other end being supported by one face of the armature holder and, to the second face of the armature holder, is located a second spring whose opposite end is supported on the shoulder of the shaft.
  • CZ 304251 is further known a twin electromag netically released spring brake provided with two, equally spaced electromagnets arranged coaxially with the brake rotor coils, between which axially movable braking armatures are arranged.
  • the braking armatures are pushed from the electromagnets by spring assemblies mounted in brackets. The spacing of the electromagnets is ensured by spacers.
  • the brake rotor is arranged between both brake armatures and is axially slidably mounted on the mounting hub by means of a system of support pins distributed around the perimeter of the mounting hub.
  • the braking armatures are axially slidably mounted on fastening bolts that pass through both carriers.
  • the main disadvantage of current technology is that the braking effect is usually created only while supplying energy from an external source.
  • the object of the invention is to design a simple and fully functional axial electromagnetic brake which will not be, in the braked state, dependent on external energy sources and which will likewise be usable in medical facilities.
  • an axial electromagnetic brake specifically an axial electromagnetic brake of the rotatable arm of a ceiling tripod arranged at the conjunction of the supporting axis and the rotatable arm of the ceiling tripod, on which are arranged supported medical apparatus and instruments, according to the invention whose basis is that it comprises, attached to the support axis, a ring with an electromagnetic core which is, by means of at least one guide element, connected to a brake flange which abuts a braking counterpart to which a rotatable arm is connected, with the ring being divided into at least two annular sections.
  • the advantage of this design is that the brake generates continuous frictional braking resistance without the need to supply power from an external source, while in the braked state there is no need to supply electricity to the brake which could permanently interfere with sensitive electrical devices. Electricity is only supplied to the brake to induce release.
  • Another advantage is that it is a ring composition of two halves and thus enables its assembly or disassembly on the assembled ceiling tripod, which eliminates the time needed for assembly and disassembly of other parts during assembly as well as for inspection and service.
  • the brake flange is divided into at least two flange sections.
  • the advantages are the same as the above noted two-part ring composition.
  • the guide element is a pin which is fixedly mounted in the brake flange and slidably mounted in a guide opening arranged in the ring.
  • the guide element may alternatively be fixedly mounted in the ring and slidably mounted in the brake flange.
  • the guide element can also be mounted directly on the support axis.
  • the coupling means additionally mounted in the ring is at least one coupling means, with which the ring is connected to the braked counterpart.
  • the coupling means may be mounted in the braked counterpart and instead be connected to the ring.
  • the brake flange is provided with a braking segment.
  • the advantage is longer service life of the contact surfaces and higher efficiency.
  • the electromagnetic core is connected to a source of electricity.
  • the ring and the brake flange are to advantage made of metal.
  • the main advantage of the design solution according to the invention is that in the braking mode, there is no need to supply electricity to the brake which could permanently interfere with sensitive electrical devices, while the brake, even when in the release mode, fulfils the electromagnetic interference values in accordance with current norms for electrical medical devices.
  • the brake can be used to advantage where compressed air is not available for operating pneumatic brakes.
  • Another advantage is that the power of the electromagnetic core and the force of the compression springs can be easily combined to achieve the optimum braking effect.
  • the braking effect can be adjusted so that in the event of an electricity outage, the rotatable arm is able to be adjusted by only exerting a manual force on it, thus reducing the risk of limited access to the patient.
  • FIG. 1 is a perspective view of a partial breakdown of individual parts of an axial electromagnetic brake
  • Fig. 2 shows a frontal view of a section of an axial electromagnetic brake
  • Fig. 3 shows a detailed perspective view of a breakdown of individual parts connecting the ring and brake flange
  • Fig. 4 shows a detailed cross- sectional view of a ring with a single electromagnetic core
  • Fig. 5 shows a detailed cross-sectional view of a ring with two electromagnetic cores
  • Fig. 6 shows a perspective view of the breakdown of individual parts of an axial electromagnetic brake including a breakdown of the covering.
  • An axial electromagnetic brake 1 of the rotatable arm H of a ceiling tripod (Fig. 1 , Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6) is arranged in conjunction with the support axis 12 of the ceiling tripod and the rotatable arm 1_1 on which are arranged supported medical apparatus and instruments.
  • the axial electromagnetic brake (Fig. 1 , Fig. 2) comprises, attached to the support axis 12, a metal ring 2 with an electromagnetic core 3 which is by means of a whole series of guide elements 8 connected to a metal brake flange 6, which abuts the braked counterpart 10, to which is connected the rotatable arm I T
  • On the guide elements 8 are mounted compression springs 5, which push the brake flange 6 against the braking counterpart 10, thereby causing friction and thus leading to mutual braking.
  • the compression springs 5 are also arranged beyond the guide elements 8.
  • the ring 2 is divided into at least two annular sections 13, 14.
  • Both the annular sections 13, 14 (Fig. 2, Fig. 5) contain two electromagnetic cores 3.
  • the two annular sections 13, 14 (Fig. 4) comprise a single electromagnetic core 3.
  • the brake flange 6 is divided into at least two flange sections 15, 16.
  • the guide elements 8 (Fig. 3) are pins which are fixedly mounted in the brake flange 6 and slidably mounted in a guide opening 9 arranged in the ring 2.
  • the guide elements 8 ensure fluid movement of the brake flange 6.
  • the brake flange 6 is provided with a braking segment 7.
  • the electromagnetic core 3 is connected to a source of electricity.
  • the axial electromagnetic brake 1 is provided with a split cover 17.
  • a connecting piece 18 by which the entire ceiling tripod is attached to the ceiling.
  • the axial electromagnetic brake 1 operates in such a way that at the moment when, through the electromagnetic core 3, electricity begins to flow, magnetic forces are exerted by the electricity which overcome the force of the compression springs 5, with the metal brake flange 6 containing the braking segment 7 being pulled towards the metal ring 2 so that by removing the pressure of the brake flange 6, friction force is no longer exerted on the braked counterpart 10 and the rotatable arm 1_1 can be moved.
  • the magnetic forces cease and the compression springs 5 again press the metal brake flange 6 containing the braking segment 7 onto the inner face of the support axis 12.
  • the axial electromagnetic brake according to the invention can especially be used as an electromagnetic axial brake of the rotatable arm of a ceiling tripod, on which are arranged supported medical apparatus and instruments.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Manipulator (AREA)

Abstract

La présente invention concerne un frein électromagnétique axial, en particulier un frein axial électromagnétique (1) du bras rotatif (11) d'un trépied de plafond disposé conjointement avec l'axe de support (12) du trépied de plafond et du bras rotatif (11) sur lesquels sont disposés des appareils et des instruments médicaux maintenus, qui contient, monté sur l'axe de support (12), un anneau fixe (2) avec un noyau électromagnétique (3), qui est relié au moyen d'au moins un élément de guidage (8) à une bride de frein (6), qui vient en butée contre la contrepartie freinée (10) à laquelle est fixé le bras rotatif (11), l'anneau (2) étant divisé en au moins deux sections annulaires (13, 14).
EP20716159.7A 2019-02-22 2020-02-19 Frein électromagnétique axial Pending EP3927585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2019-108A CZ2019108A3 (cs) 2019-02-22 2019-02-22 Elektromagnetická axiální brzda
PCT/CZ2020/000006 WO2020169131A1 (fr) 2019-02-22 2020-02-19 Frein électromagnétique axial

Publications (1)

Publication Number Publication Date
EP3927585A1 true EP3927585A1 (fr) 2021-12-29

Family

ID=70109990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20716159.7A Pending EP3927585A1 (fr) 2019-02-22 2020-02-19 Frein électromagnétique axial

Country Status (4)

Country Link
EP (1) EP3927585A1 (fr)
CZ (1) CZ2019108A3 (fr)
MA (1) MA55030A (fr)
WO (1) WO2020169131A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3424595A1 (de) * 1984-07-04 1986-01-09 Ortlinghaus-Werke GmbH, 5632 Wermelskirchen Elektromagnetisch lueftbare federdruckbremse
US7770247B2 (en) * 2005-05-02 2010-08-10 Hill-Rom Services, Inc. Brake system for wall arm
DE102007051229A1 (de) * 2007-10-26 2009-04-30 Schaeffler Kg Wälzlager mit einer Bremseinrichtung

Also Published As

Publication number Publication date
MA55030A (fr) 2021-12-29
WO2020169131A1 (fr) 2020-08-27
CZ2019108A3 (cs) 2020-09-09

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