EP3864988B1 - Ensemble casque de protection - Google Patents

Ensemble casque de protection Download PDF

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Publication number
EP3864988B1
EP3864988B1 EP21155333.4A EP21155333A EP3864988B1 EP 3864988 B1 EP3864988 B1 EP 3864988B1 EP 21155333 A EP21155333 A EP 21155333A EP 3864988 B1 EP3864988 B1 EP 3864988B1
Authority
EP
European Patent Office
Prior art keywords
ratchet
cover
band
knob
ratchet gear
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.)
Active
Application number
EP21155333.4A
Other languages
German (de)
English (en)
Other versions
EP3864988A1 (fr
Inventor
Surya PASALA
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.)
Honeywell International Inc
Original Assignee
Honeywell International Inc
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 Honeywell International Inc filed Critical Honeywell International Inc
Priority to EP23198902.1A priority Critical patent/EP4272591A3/fr
Publication of EP3864988A1 publication Critical patent/EP3864988A1/fr
Application granted granted Critical
Publication of EP3864988B1 publication Critical patent/EP3864988B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A42B3/14—Suspension devices
    • A42B3/145—Size adjustment devices
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/08—Chin straps or similar retention devices

Definitions

  • Example embodiments of the present disclosure relate generally to head protection devices or protective headgears, and more particularly, to a ratchet assembly for head protection devices.
  • Protective headgears and hard hats are generally worn by users at industrial sites to protect the users from head injuries caused by falling objects or collisions with fixed objects at the sites.
  • the hard hats are provided with a band or strap that is adjustable and is used by the users to wear the hard hat.
  • Such bands are equipped with a buckle or a ratchet mechanism to secure the band around the users' heads.
  • the buckle or the ratchet mechanism becomes inefficient and tends to loosen unwantedly.
  • US2010095438A1 discloses a headgear support that comprises a headband and a pad.
  • the headband has a first end and a second end and forms a substantially closed perimeter having a length which is selectively adjustable.
  • the pad is pivotally connected to the headband such that the pad is disposed within the substantially closed perimeter and pivots relative to the headband about a pivot axis.
  • safety helmets are preferably required to help ensure the safety of workers in dangerous conditions.
  • some existing safety helmets may not fit the user correctly or consistently, in some examples, but not limited to, during emergency incidents, due to various reasons, including improper placement, unbuckling or loose buckling of a chin strap, a loosened headband and/or the like.
  • ratcheting means can loosen during an operation due to a mechanical failure, thereby leading to safety risk.
  • failures may be based on defects, wear and tear, and/or the like.
  • Various example embodiments described in the present disclosure relate to a head band and a ratcheting mechanism of the head band to allow for a user to easily tighten the ratcheting mechanism while also resisting loosening of straps of the head band during the operation.
  • FIGS. 1A-1C illustrate various exterior views of a ratchet assembly 100 in accordance with an example embodiment of the present disclosure.
  • the ratchet assembly 100 may include a knob 110 and a band housing (e.g., a first cover 120 snap-fit to a second cover 130).
  • the knob 110 may be configured to allow a user to tighten or loosen the ratchet assembly 100.
  • the knob 110 may be shaped such that the user could easily operate the knob 110.
  • the knob 110 may have a plurality of engagement protrusions 140 to allow for a user to grip the knob 110.
  • the knob 110 may have five engagement protrusions 140.
  • the knob 110 is operably coupled with the ratchet gear 170 (shown in FIG. 3A-3C ), as discussed in more detail below.
  • the first cover 120 and the second cover 130 are configured to engage with one another (e.g., via snap-fitting) to form the band housing.
  • the band housing may define a unitary piece (e.g., the first cover 120 and the second cover 130 may be formed out of a single piece of material).
  • the band housing e.g., the first cover 120 and the second cover 130
  • the band cavity may be configured to receive a band (e.g., a head band 150), as discussed in more detail (shown in FIG. 2A ).
  • a band e.g., a head band 150
  • two ends of the band 150 may be placed in the band cavity such that the ratchet assembly 100 is configured to loosen and/or tighten the band 150 such that the band 150 may fit snugly with various shaped heads.
  • the ratchet assembly 100 may be installed on the band 150.
  • the second cover 130 may define a protrusion 210.
  • the protrusion 210 extends outwardly through a plurality of band teeth 220 of the band 150 (e.g., through both band end 150A and head band end 150B).
  • the first cover 120 may be coupled to the second cover 130, such that the band 150 may be sandwiched therebetween.
  • the band 150 may pass through the band cavity defined between the first cover 120 and the second cover 130.
  • the ratchet gear 170 may be disposed on the protrusion 210.
  • the knob 110 may also be disposed on the protrusion 210 and configured to engage with the ratchet gear 170.
  • the engagement of the knob 110 with the protrusion 210 may secure the knob 110 to the ratchet assembly 100 and cause the ratchet assembly 100 to stay a unitary piece.
  • the ratchet gear 170 defines a plurality of ratchet gear teeth 320 configured to be received by the band teeth 220 of the band 150.
  • the band 150 may define two ends 150A, 150B, configured to be received between the band housing (e.g., first cover 120 and second cover 130).
  • the ratchet gear teeth 320 of the ratchet gear 170 rotates, the two ends 150A, 150B of the head band 150 may be configured to either enlarge or reduce the circumference of the band 150.
  • the amount of overlap between the two ends 150A, 150B may increase.
  • the increase in the overlap causes the band circumference to reduce (e.g., the head band 150 is tightened).
  • the ratchet gear 170 rotates counterclockwise, the overlap of the two ends 150A, 150B of the band 150 may be reduced. Therefore the band circumference may be increased (e.g., the head band 150 is loosened).
  • the first cover 120 defines at least one locking element (e.g., locking elements 410A, 410B) configured to engage with one or more ratchet gear teeth 320 of the ratchet gear 170, as discussed with reference to FIG. 4A below.
  • the rotational movement of the ratchet gear 170 is restricted in a direction via the engagement of the locking elements 410A, 410B of the first cover 120, and the ratchet gear teeth 320 of the ratchet gear 170.
  • locking elements 410A, 410B configured to engage with one or more ratchet gear teeth 320 of the ratchet gear 170, as discussed with reference to FIG. 4A below.
  • the rotational movement of the ratchet gear 170 is restricted in a direction via the engagement of the locking elements 410A, 410B of the first cover 120, and the ratchet gear teeth 320 of the ratchet gear 170.
  • the ratchet gear teeth 320 may be disengaged from the locking elements 410A, 410B of the first cover 120 based on the rotation of the knob 110 due to the interaction between a plurality of knob gears 310 and at least one unlocking rib (e.g., unlocking ribs 440A, 440B) of the locking elements 410A, 410B, as shown in FIGS. 4A-4C .
  • unlocking ribs 440A, 440B unlocking ribs 440A, 440B
  • FIG. 3A illustrates the knob 110 of the ratchet assembly 100, in accordance with an example embodiment.
  • the knob 110 includes the plurality of knob gears 310.
  • each knob gear of the plurality of knob gears 310 may be spaced equally from one another.
  • the same number of knob gears 310 may be provided as the number of ratchet gear teeth 320 provided on the ratchet gear 170, as shown in FIG. 3B .
  • the knob 110 may comprise a knob aperture 330 configured to engage with the protrusion 210 of the second cover 130.
  • the knob 110 may be configured for a user to rotate via engagement protrusions 140, as shown in FIG. 1A .
  • the number of engagement protrusions 140 provided may be based on the desired gripping characteristics. For example, as shown in FIG. 1A , the knob 110 may have five engagement protrusions 140.
  • the knob 110 is configured with one or more keys 340.
  • the knob 110 is configured with three keys 340A, 340B, and 340C spaced equally from one another.
  • the keys 340 of the knob 110 interact with spacings 350 (shown in FIG. 3B ) for coupling the knob 110 to the ratchet gear 170.
  • the key 340A is disposed within the spacing 350A
  • the key 340B is within the spacing 350B
  • the key 340C is within the spacing 350C.
  • the ratchet gear 170 is configured with a ratchet aperture 360.
  • the ratchet aperture 360 allows the receiving of the protrusion 210.
  • the ratchet gear 170 also has a plurality of pinion gear teeth 370.
  • the plurality of pinion gear teeth 370 is aligned along the ratchet aperture 360 and is configured to mate with the plurality of band teeth 220 on the band 150.
  • the plurality of pinion gear teeth 370 is engaged with the plurality of band teeth 220 such that the rotation of the ratchet gear 170 allows movement of the band 150 for tightening or loosening the band 150.
  • Each pinion gear tooth of the plurality of pinion gear teeth 370 is spaced equally from each other.
  • FIG. 3C illustrates the engagement between the knob 110 of FIG. 3A and the ratchet gear 170 of FIG. 3B , in accordance with an example embodiment.
  • the ratchet gear 170 may be disposed under the knob 110.
  • the knob 110 may have one or more keys 340A-340C that are configured to engage with the ratchet gear 170.
  • the ratchet gear 170 may be configured to engage with the band housing (e.g., first cover 120 and the second cover 130).
  • the ratchet gear 170 may be configured with a plurality of ratchet gear teeth 320 and a plurality of pinion gear teeth 370.
  • FIG. 4A illustrates the first cover 120 having locking elements 410A, 410B in accordance with an example embodiment.
  • the first cover 120 has an aperture 420 to receive the ratchet gear 170 during assembly of the ratchet assembly 100.
  • the locking elements 410A and 410B are aligned along the aperture 420.
  • the first cover 120 may have more than two locking elements 410A, 410B.
  • the locking elements 410A and 410B are positioned at diametrically opposite positions along the aperture 420.
  • the locking elements 410A and 410B are configured to engage with at least one of the plurality of ratchet gear teeth 320 of the ratchet gear 170.
  • Each locking element 410A and 410B comprises a ratchet lock and an unlocking rib.
  • the locking element 410A comprises ratchet lock 430A and unlocking rib 440A
  • the locking element 410B comprises ratchet lock 430B and unlocking rib 440B.
  • the ratchet locks 430A and 430B comprise a ramped surface 450 having one lower end and another higher end.
  • the unlocking ribs 440A and 440B protrude outwardly from the first cover 120 and are configured to engage with one of the plurality of knob gears 310 of the knob 110.
  • FIGS. 4B-4C illustrate the interaction of the first cover 120 of FIG. 4A and a ratchet gear 170 of the ratchet assembly 100.
  • Each ratchet gear tooth of the plurality of ratchet gear teeth 320 comprises a ramped surface 450 such that the lower portion of the ramped surface 450 of the ratchet gear tooth abuts a higher portion of the ramped surface 450 of the ratchet gear tooth.
  • the ratchet lock 430A, 430B and the ratchet gear tooth are engaged in a manner that the higher portion of the ramped surface 450 of the ratchet lock 430A, 430B engages with the higher portion of the ramped surface 450 of a subsequent ratchet gear tooth.
  • the ratchet gear 170 is configured to rotate in one direction, for example, in a clockwise direction, and is restricted to move in the opposite direction, for example, in a counterclockwise direction when the ratchet locks 430A and 430B are engaged with the ratchet gear teeth 320 of the ratchet gear 170.
  • the higher portion of the ramped surface of the ratchet lock 430A is pushed against the higher portion of the ramped surface of a subsequent ratchet gear tooth to restrict the movement in the counterclockwise direction.
  • the restriction of the ratchet gear 170 due to the interaction between the ratchet gear teeth 320 and the ratchet locks 430A and 430B may restrict the movement of the ratchet gear teeth 320 and the plurality of band teeth 220 on the band 150.
  • the ratchet gear teeth 320 may also be restricted from rotating counterclockwise, such that the band 150 cannot be loosened until tooth protrusion(s) of the ratchet gear teeth 320 are disengaged from the locking elements 410A, 410B (e.g., via a user rotating the knob 110).
  • the ratchet assembly 100 is configured such that rotation direction of the knob 110 and ratchet gear 170 in which the tooth protrusions of the ratchet gear teeth 320 engage with the locking element 410A, 410B (e.g., the counterclockwise direction) may be the rotational direction for loosening the band 150.
  • the engagement of the tooth protrusions of the ratchet gear teeth 320 and the locking element 410A, 410B are configured to be overcome with sufficient rotational force.
  • a user may be able to rotate the knob 110 in the loosening direction (e.g., counterclockwise) with sufficient force to overcome the engagement force between the tooth protrusions of the ratchet gear teeth 320 and the ratchet locks 430A and 430B of the locking elements 410A and 410B, such that the ratchet gear teeth 320 may disengage from the ratchet locks 430A and 430B and rotate to allow the ratchet assembly 100 to loosen the band 150.
  • the loosening direction e.g., counterclockwise
  • the unlocking ribs 440A and 440B interact with the plurality of knob gears 310 such that when the knob 110 is rotated in counterclockwise direction with sufficient force, then the plurality of knob gears 310 exert a force on the unlocking ribs 440A and 440B to bend the unlocking ribs 440A, 440B in a radially outward direction.
  • the bending of the unlocking ribs 440A and 440B in an outward direction disengages the ratchet locks 430A and 430B from the tooth protrusions of the ratchet gear teeth 320.
  • Each locking element 410A and 410B is movable between a first position and a second position.
  • the ratchet lock 430A, 430B is engaged with one of the plurality of the ratchet gear teeth 320, such that the ratchet lock 430A, 430B allows rotation of the ratchet gear 170 in one direction and restricts the rotation in another direction.
  • the knob gears 310 exert a force on the unlocking rib 440A, 440B in a radially outward direction to move to the second position.
  • the ratchet lock 430A, 430B disengages with the at least one ratchet gear tooth of the ratchet gear teeth 320 to allow rotation of the ratchet gear 170 in the counterclockwise direction and loosen the band 150.
  • FIG. 5A illustrates the plurality of band teeth 220 on the band 150 in accordance with an example embodiment.
  • the band 150 comprises two bands, 510A and 510B.
  • Each band comprises a plurality of band teeth 220.
  • Each of the band teeth 220 of the bands 510A and 510B is configured to engage with the plurality of pinion gear teeth 370 of the ratchet gear 170 during rotation of the ratchet gear 170 for loosening or tightening of the band 150.
  • the band 150 is inserted within the band housing (e.g., the first cover 120 and the second cover 130).
  • FIGS. 5B-5D illustrate the interaction of the pinion gear teeth 370 of the ratchet gear 170 and the plurality of band teeth 220 on the band 150, in accordance with an example embodiment. As shown, each pinion gear tooth of the ratchet gear 170 mates with each tooth of the plurality of band teeth 220 when the ratchet gear 170 is rotated in a direction.
  • the knob 110 when the knob 110 is rotated in the clockwise direction causing the ratchet gear 170 to also rotate in the clockwise direction, the bands 510A and 510B move towards each other, and the overlap increases thereby tightening the band 150.
  • the ratchet gear 170 is rotated in the counterclockwise direction, the bands 510A and 510B move away from each other in opposite directions to loosen the band 150.
  • FIGS. 6A-6D illustrate various views of the second cover 130 used in the ratchet assembly 100 in accordance with an example embodiment.
  • the second cover 130 may be configured with a curved shape, such as to engage a user's head more effectively and/or comfortably.
  • the second cover 130 may include a plurality of snap-fits 600 configured to operably couple the first cover 120 with the second cover 130.
  • the second cover 130 may include a plurality of gripping protrusions 610 extending towards the first cover 120 and configured to engage with the band 150 during operation (e.g., to assist in restricting any accidental movement of the bands during operation).
  • the second cover 130 may include the protrusion 210 configured to extend through the ratchet aperture 360, receive the ratchet gear 170, also secure the knob 110.
  • the knob 110 may be configured to snap-fit to the knob engagement protrusion 210, such that the non-rotational movement of the knob 110 is limited.
  • the band 150 may be configured to receive the protrusion 210, such that the band is held in the band cavity in part due to the protrusion 210.
  • the second cover 130 may define a surface ( FIG. 6C ) to engage with a user's head during operation.
  • FIG. 7 is a flow chart illustrating the method 700 for assembling the band housing in accordance with an example embodiment of the present disclosure.
  • the method 700 of assembling the band housing may include providing a first cover.
  • the first cover 120 comprises an aperture 420 and at least one locking element 410A, 410B.
  • the at least one locking element 410A, 410B is configured to engage with at least one of a plurality of ratchet gear teeth 320 of a ratchet gear 170 to restrict rotation of the ratchet gear 170 in at least one direction and allow rotation of the ratchet gear 170 in another direction.
  • the at least one locking element 410A, 410B is configured to move from a first position to a second position to disengage the at least one locking element 410A, 410B with the at least one of the plurality of ratchet gear teeth 320.
  • the method includes coupling a second cover to the first cover.
  • the second cover 130 may be coupled to the first cover 120.
  • the second cover 130 has a protrusion 210, wherein the first cover 120 is disposed on the protrusion 210.
  • the first cover 120 and the second cover 130 define a cavity to receive a band.
  • the band comprises a plurality of band teeth 220 configured to engage with a plurality of pinion gear teeth 370 of the ratchet gear 170.
  • the knob 110 and the keys 340 of the knob 110 rotate in the clockwise direction causing the ratchet gear 170 to rotate in the clockwise direction.
  • the pinion gear teeth 370 of the ratchet gear 170 cause the band 150 to tighten, at which point, the ratchet gear teeth 320 may engage with the locking element 410A, 410B, such that no unintended counterclockwise rotation may occur with a sufficient force, such that the band 150 is not loosened accidentally during operation.
  • the knob gears 310 cause the unlocking ribs 440A, 440B to bend outwards in a radially outward direction and the ratchet gear teeth 320 disengages with the ratchet lock 430A, 430B to allow the band 150 to loosen.
  • the user may turn the knob 110 in the counterclockwise direction until the knob gears 310 engage with the unlocking ribs 440A, 440B and exert the unlocking ribs 440A, 440B to move to the second position, such that the ratchet gear 170 rotates in the counterclockwise direction and the band 150 is loosened.
  • references within the specification to "one embodiment,” “an embodiment,” “embodiments,” or “one or more embodiments” are intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure.
  • the appearance of such phrases in various places within the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
  • various features are described which may be exhibited by some embodiments and not by others.
  • various requirements are described, which may be requirements for some embodiments, but not other embodiments.

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Package Frames And Binding Bands (AREA)

Claims (14)

  1. Ensemble rochet (100) pour un dispositif de protection de la tête, dans lequel l'ensemble rochet (100) comprend :
    un premier recouvrement (120) définissant une ouverture (420), et un engrenage à rochet (170), dans lequel l'engrenage à rochet (170) est disposé à l'intérieur de l'ouverture (420) du premier recouvrement (120), caractérisé en ce que
    le premier recouvrement (120) comprend au moins un élément de verrouillage (410A) disposé le long de l'ouverture (420) ; et
    l'engrenage à rochet (170) comprend une pluralité de dents d'engrenage à rochet (320) disposées sur une surface extérieure de l'engrenage à rochet (170),
    dans lequel l'au moins un élément de verrouillage (410A) est mobile d'une première position à une seconde position dans une direction radialement vers l'extérieur en fonction d'une force appliquée de l'extérieur, et
    dans lequel l'au moins un élément de verrouillage (410A) du premier recouvrement (120) est en prise avec au moins une de la pluralité de dents d'engrenage à rochet (320) de l'engrenage à rochet (170).
  2. Ensemble rochet (100) selon la revendication 1, comprenant en outre un second recouvrement (130) comportant une saillie, dans lequel le premier recouvrement (120) est disposé sur la saillie, et dans lequel le premier recouvrement (120) et le second recouvrement (130) définissent une cavité.
  3. Ensemble rochet (100) selon la revendication 2, dans lequel la cavité est conçue pour recevoir une bande (150), et dans lequel la bande (150) comprend une pluralité de dents de bande (220).
  4. Ensemble rochet (100) selon la revendication 3, dans lequel l'engrenage à rochet (170) comprend une pluralité de dents d'engrenage à pignon (370), dans lequel chacune de la pluralité de dents d'engrenage à pignon (370) est en prise avec l'au moins une de la pluralité de dents de bande (220) de la bande (150), de telle sorte que la rotation de l'engrenage à rochet (170) resserre ou desserre la bande (150) lors du fonctionnement.
  5. Ensemble rochet (100) selon l'une quelconque des revendications 1 à 4, comprenant en outre un bouton (110), dans lequel le bouton (110) comprend une pluralité d'engrenages à bouton (310) disposés à l'intérieur du bouton (110).
  6. Ensemble rochet (100) selon la revendication 5, dans lequel le bouton (110) est disposé sur l'engrenage à rochet (170).
  7. Ensemble rochet (100) selon l'une quelconque des revendications 1 à 6, dans lequel l'au moins un élément de verrouillage (410A) comprend un verrou à rochet (430A) et une nervure de déverrouillage (440B), dans lequel le verrou à rochet (430A) comprend une surface en rampe et est en prise avec l'au moins une de la pluralité de dents d'engrenage à rochet (320) de l'engrenage à rochet (170), et la nervure de déverrouillage (440B) fait saillie vers l'extérieur à partir du premier recouvrement (120).
  8. Ensemble rochet (100) selon la revendication 7, dans lequel l'au moins un élément de verrouillage (410A) du premier recouvrement (120) est en prise avec au moins un de la pluralité d'engrenages à bouton (310) du bouton (110).
  9. Ensemble rochet (100) selon la revendication 1, dans lequel le premier recouvrement (120) comprend au moins deux éléments de verrouillage (410A, 410B) disposés le long de l'ouverture (420), dans lequel les au moins deux éléments de verrouillage (410A, 410B) sont positionnés diamétralement opposés l'un à l'autre, et chacun des au moins deux éléments de verrouillage (410A, 410B) comprend un verrou à rochet (430A) et une nervure de déverrouillage (440B) et dans lequel l'engrenage à rochet (170) est disposé à l'intérieur de l'ouverture (420) du premier recouvrement (120) et le verrou à rochet (430A) de chacun des au moins deux éléments de verrouillage (410A, 410B) est en prise avec au moins une de la pluralité de dents d'engrenage à rochet (320) de l'engrenage à rochet (170).
  10. Ensemble rochet (100) selon la revendication 9, comprenant en outre un bouton (110), disposé sur l'engrenage à rochet (170), le bouton (110) comprenant une pluralité d'engrenages à bouton (310), dans lequel la nervure de déverrouillage (440B) de chacun des au moins deux éléments de verrouillage (410A, 410B) est en prise avec au moins un de la pluralité d'engrenages à bouton (310).
  11. Ensemble rochet (100) selon la revendication 10, dans lequel la nervure de déverrouillage (440B) de chacun des au moins deux éléments de verrouillage (410A, 410B) est mobile de la première position à la seconde position dans une direction radialement vers l'extérieur en fonction de la force appliquée par l'au moins un de la pluralité d'engrenages à bouton (310) en réponse à une rotation du bouton (110) dans une direction par un utilisateur.
  12. Ensemble rochet (100) selon l'une quelconque des revendications 10 à 11, comprenant en outre un second recouvrement (130), le second recouvrement (130) comportant une saillie, dans lequel le premier recouvrement (120) est disposé sur la saillie du second recouvrement (130) et dans lequel le premier recouvrement (120) et le second recouvrement (130) définissent une cavité conçue pour recevoir une bande (150), dans lequel la bande (150) comprend une pluralité de dents de bande (220).
  13. Ensemble rochet (100) selon la revendication 12, dans lequel l'engrenage à rochet (170) comprend une pluralité de dents d'engrenage à pignon (370), dans lequel chacune de la pluralité de dents d'engrenage à pignon (370) est conçue pour venir en prise avec l'au moins un de la pluralité de dents de bande (220) de la bande (150) et dans lequel chacune de la pluralité de dents d'engrenage à rochet (320) comprend une surface en rampe, de telle sorte qu'une partie inférieure de la surface en rampe d'une dent d'engrenage à rochet bute contre une partie supérieure de la surface en rampe d'une dent d'engrenage à rochet suivante.
  14. Ensemble rochet (100) selon l'une quelconque des revendications 10 à 13, dans lequel le bouton (110) comprend une pluralité de saillies de prise que l'utilisateur peut saisir.
EP21155333.4A 2020-02-15 2021-02-04 Ensemble casque de protection Active EP3864988B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23198902.1A EP4272591A3 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN202011006628 2020-02-15

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP23198902.1A Division EP4272591A3 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection
EP23198902.1A Division-Into EP4272591A3 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection

Publications (2)

Publication Number Publication Date
EP3864988A1 EP3864988A1 (fr) 2021-08-18
EP3864988B1 true EP3864988B1 (fr) 2023-11-01

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP23198902.1A Pending EP4272591A3 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection
EP21155333.4A Active EP3864988B1 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP23198902.1A Pending EP4272591A3 (fr) 2020-02-15 2021-02-04 Ensemble casque de protection

Country Status (3)

Country Link
US (1) US20210251329A1 (fr)
EP (2) EP4272591A3 (fr)
CN (1) CN113261739A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3869989A1 (fr) * 2018-10-24 2021-09-01 Stryker Corporation Ensemble casque chirurgical ayant un mécanisme d'ajustement
US11185120B2 (en) * 2020-02-20 2021-11-30 Varjo Technologies Oy Adjustment mechanism for adjusting length of a headband

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US8156574B2 (en) * 2007-05-08 2012-04-17 Warrior Sports, Inc. Helmet adjustment system
FR2927777B1 (fr) * 2008-02-27 2010-03-26 Decathlon Sa Dispositif de reglage, notamment pour un casque.
US8359672B2 (en) * 2008-10-21 2013-01-29 Kimberly-Clark Worldwide, Inc. Headband with pivotal pad
US8015625B2 (en) * 2009-05-06 2011-09-13 Specialized Bicycle Components Bicycle helmet adjustment mechanism
US9642412B2 (en) * 2013-08-30 2017-05-09 Msa Technology, Llc Adjustment mechanism for a headband arrangement of a safety helmet
US9161588B2 (en) * 2013-10-21 2015-10-20 Minson Enterprises Co., Ltd. Adjustable headband device for a helmet
JP6646195B2 (ja) * 2015-02-27 2020-02-14 エフ．ジー．ピー． エス．アール．エル． 整形外科用整形器具又は支持具のための手動操作式回転係止装置
WO2017108118A1 (fr) * 2015-12-22 2017-06-29 Groupe Ls S.A. Rétention et ajustement pour dispositif de casque de sécurité et casque de sécurité pourvue d'un tel dispositif

Also Published As

Publication number Publication date
CN113261739A (zh) 2021-08-17
EP4272591A3 (fr) 2024-01-17
EP3864988A1 (fr) 2021-08-18
US20210251329A1 (en) 2021-08-19
EP4272591A2 (fr) 2023-11-08

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