Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C7/00—Parts, details, or accessories of chairs or stools
  • A47C7/36—Supports for the head or the back
  • A47C7/38—Supports for the head or the back for the head, e.g. detachable
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/80—Head-rests
  • B60N2/806—Head-rests movable or adjustable
  • B60N2/809—Head-rests movable or adjustable vertically slidable
  • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
  • B60N2/815—Release mechanisms, e.g. buttons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/80—Head-rests
  • B60N2/806—Head-rests movable or adjustable
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/80—Head-rests
  • B60N2/806—Head-rests movable or adjustable
  • B60N2/809—Head-rests movable or adjustable vertically slidable
  • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
  • B60N2/818—Head-rests movable or adjustable vertically slidable characterised by their locking devices with stepwise positioning

Definitions

• the invention relates to a locking device for a headrest and a headrest for a vehicle seat.
• Front area of a vehicle can be used. It serves the
• height-adjustable headrest provides the comfort of a vehicle occupant and the prevention of injury in the event of an accident.
• a headrest for a vehicle seat which has a headrest body, with respect to a
• Headrest bar is height adjustable. For locking the
• Headrest body with the headrest rod is provided a pivotally mounted and biased locking element, which is controlled by an actuating element.
• the locking element engages in a notch of the headrest rod.
• a locking device with spring means and a headrest are described with such a locking device.
• the locking device is adjustable relative to two support rods, wherein for locking the spring means cooperate with a plurality of recesses of the support rods.
• the locking of the handrails is through a mechanical fixation of the spring means in a central region effected.
• a force acting on the spring means in the central area causes a locking of the two support rods.
• Object of the present invention is to provide an improved
• a locking device for a headrest is a
• Locking element mounted displaceably in a carrier device.
• the locking element is displaceable from a locked position to an unlocked position by means of an actuator.
• the locking device is slidably mounted with respect to a support rod. If in the following a handrail is mentioned, it is clear to the person skilled in the art that it can also be a plurality of handrails, in particular two handrails.
• the locking element in the unlocked position allows a shift of
• Locking element in the locked position for locking the locking device with respect to the support rod in at least one
• Carrier device with the locking element arranged therein in the locked position formed mirror-symmetrical to a substantially perpendicular to the support device extending xz-plane.
• Actuating device can be used due to the mirror symmetry a similar locking device for locking each of the particular height-adjustable headrests.
• the actuator can be attached only to one side of the headrest.
• the actuator is the
• Headrest of a driver's seat mounted on one side, whereas the actuator of the headrest of a passenger seat is mounted on the opposite side.
• the mirror symmetry of the carrier device and the locking element of the locking device allows the fastening of the actuating device, in particular alternatively on the left side or on the right side of the xz plane along a y-axis extending perpendicular to the xz plane.
• the locking element engages in the recess of the support rod positively and / or non-positively.
• various locking devices which are formed substantially mirror-inverted to each other to produce, to allow a left-side or a right-side arrangement of the actuator.
• a first spring means biases the locking element into the locked position. This ensures that the locking device is mechanically fixed to the support rod, as long as the actuator is not actuated.
• the support device comprises an upper support plate and a lower support plate, wherein upper support plate and lower support plate are displaceable to each other and parallel to the y-axis. Is the
• Locking device installed in particular in a headrest of a vehicle seat, so the y-axis can be aligned transversely to a direction of travel which is parallel to an x-axis.
• Transferable locking element so that the locking device can be unlocked, in particular to make a height adjustment of the headrest.
• Pretens carrier plate in a centered position This is achieved by means of a simple mechanism that return the lower and upper support plate after operating the actuator in the original centered position, the locked position of the
• Locking element corresponds.
• the locking device is thus designed so that a user a force on the
• Actuator must exercise to lock the locking element in the unlocked position, with automatic release when the
• the second spring means also has the task
• the second spring means comprises two oppositely disposed coil springs, which are arranged in opposite directions in each case between the upper and lower support plate, so that the one of the two coil springs is stretched when the other of the two coil springs is compressed. This is achieved in a particularly simple manner that the upper support plate in the centered position
• Actuation of the actuator returns.
• this simple mechanism allows re-unlocking by subsequent re-actuation of the actuator.
• the actuator is designed as a push button or as a rocker arm.
• Locking element with respect to the lower support plate mounted such that the locking element is fixed parallel to the y-axis and parallel to an axis perpendicular to the y-axis x-axis is movable.
• the actuation of the actuator transmits a force by means of the upper support plate on the locking element to the
• Locking element for unlocking from the support rod away or to lock on the support rod to move.
• the upper support plate and the locking member have means by which the force acting on the upper support plate and parallel to the y-axis force on the locking element in a direction parallel to the x-axis is transferable to a linear movement of the
• the means comprise an angled portion of the locking element and an angled surface of the upper support plate, wherein the angled portion abuts against the angled surface.
• the angled portion and the angled surface extend obliquely to the x- and y-axis, so that a displacement of the upper support plate parallel to the y-axis causes a displacement of the locking element parallel to the x-axis.
• a headrest for a vehicle seat has the above-described
• the headrest may in particular have a carrier part which is likewise designed mirror-symmetrically to the xz plane and
• Figure 1 is a plan view of a locking device with a
• Figure 2 is a plan view of a locking device with a
• Locking element in an unlocked position, wherein an upper support plate with respect to a lower support plate occupies a first laterally offset position
• Figure 3 is a plan view of a locking device with a
• Locking element in an unlocked position, wherein an upper support plate opposite to a lower support plate occupies a second laterally offset position
• FIG. 4 shows an exploded view of a locking device
• FIG. 5 an exploded view of an actuating device
• Figure 6 is a perspective view of a support rod with a
• Figure 7 is a perspective view of a support part of a
• Figure 8 is a perspective view of an arrangement of a
• Headrest upholstery on a support part of a headrest
• FIG. 9 shows a rear view of two unpadded headrests, one operating device being arranged on each of the two headrests
• Figure 10 is a plan view of an alternative embodiment of a locking device with a locking element having a substantially W-shaped angled portion.
• Figure 1 shows a plan view of a locking device 1 with a
• Locking element 2 is arranged between an upper support plate 3.1 and a lower support plate 3.2 of a support device 3, wherein the upper support plate 3.1 is slidably mounted relative to the lower support plate 3.2 along a y-axis Y.
• the bow-shaped locking element 2 is inserted into the lower support plate 3.2, wherein a limiting element 3.2.1, the lower
• Support plate 3.2 is formed adjacent to the locking element 2 and prevents movement of the locking element 2 parallel to the y-axis Y.
• the bow-shaped locking element 2 is biased by a arranged between the upper and lower support plate first spring means 4 in the locked position L.
• the upper support plate 3.1 has a receiving recess 3.1 .1, which is suitable for receiving a second spring means 5, the two opposite and mutually oppositely mounted coil springs 5.1, which are shown in detail in Figure 4, is suitable.
• a bias of the upper support plate 3.1 is achieved with respect to the lower support plate 3.2 in a centered position C.
• the upper and the lower support plate 3.1, 3.2 with the intermediate locking element 2 in the locked position L is, as shown in Figure 1, mirror-symmetrical to an xz-plane XZ formed and arranged.
• the xz plane XZ runs parallel to the x-axis X and a z-axis Z running perpendicular to the plane shown in FIG.
• the upper support plate 3.1 has two opposite and laterally projecting arms 3.1 .2. Furthermore, the lower one
• Support plate 3.2 two protruding latching arms 3.2.2 formed for attachment of the locking device 1 to another component.
• the bow-shaped locking element 2 is angled in sections. At least one flexible arm 3.1 .3 abuts on the sections
• angled locking element 2 such that a game or a tolerance can be compensated.
• Figure 2 shows a plan view of the locking device 1 with the
• Locking element 2 in an unlocked position U.
• Support plate 3.1 occupies a first laterally offset position S1 relative to the lower support plate 3.2.
• the upper support plate 3.1 in the first laterally offset position S1, is offset from the centered position C parallel to the y-axis to the right.
• a further upper support plate 3.1 in dashed lines in the centered position C in FIG.
• the upper support plate 3.1 is displaceable by means of a parallel to the y-axis Y on the laterally projecting arm 3.1 .2 acting force F from the centered position C in the first laterally offset position S1.
• the upper support plate 3.1 and the locking element 2 means on, the force F acting on the upper support plate 3.1 transmitted to the locking element 2 in a direction parallel to the x-axis X.
• Locking element 2 abuts against an angled surface 3.1 .4, so that the force F acting on the upper support plate 3.1 on the
• Locking element 2 is transferable.
• the displacement of the upper support plate 3.1 from the centered position C to the first laterally offset position S1 thus causes a displacement of the locking element 2 parallel to the x-axis X from the locked position L to the unlocked position U.
• the locking element 2 is in the unlocked
• Figure 3 shows a plan view of the locking device 1 with the
• FIG. 3 essentially corresponds to the situation already shown in FIG. 2, with the difference that the locking mechanism is locked in place for guiding the locking element 2
• Support plate 3.1 relative to the lower support plate 3.2 compared to the centered position C to the left in the second laterally offset
• Figure 4 shows an exploded view of the locking device 1, which comprises the upper support plate 3.1, the lower support plate 3.2, the first spring means 4, the partially angled locking element 2 and the second spring means 5, wherein the second spring means 5 two
• each of the two coil springs 5.1 strikes a stop surface 3.1 .5 of the upper support plate 3.1 and a central web 3.2.3, which is integrally formed on the lower support plate 3.2 at. So that's the two
• Coil springs 5.1 mounted in opposite directions and biased the upper support plate 3.1 in the centered position C.
• the second spring means 5 is made of a rubber.
• the second includes
• Spring means 5 an elastically deformable O-ring, the upper
• Carrier plate 3.1 biases in the centered position C.
• Support plate 3.2 the upper support plate 3.1 a variety of
• Holding recesses 3.2.4 a corresponding axial extent parallel to the y-axis Y, so that a displacement of the upper support plate 3.1 with respect to the lower support plate 3.2 between the centered position C, the first and the second laterally offset position S1, S2 is possible.
• FIG. 5 shows an exploded view of an actuator 6, which is designed as a push button.
• the actuating device 6 comprises a spring element 6.1, an actuating element 6.2 and a retaining sleeve 6.3.
• the actuator 6.2 is against a force exerted by the spring element 6.1 spring force in the retaining sleeve 6.3 manually pressed.
• the actuator 6 is arranged such that when manual Actuate the actuator 6, the force F on one of the two laterally projecting arms 3.1 .2 of the upper support plate 3.1 is taught.
• a support rod 7 is shown with a plurality of spaced-apart recesses 7.1. To lock the
• Locking device 1 in a predetermined position relative to the support rod 7 engages the locking element 2 in one of the recesses 7.1 non-positively and / or positively.
• a retaining sleeve 8 is slidably mounted on the support rod 7.
• the retaining sleeve 8 serves for fastening the locking device 1 to the support rod 7, so that the locking device 1 in a plurality of positions corresponding to the recesses 7.1, can be locked.
• the locking element 2 engages through a slot-shaped
• Holding rod 7 a An attached to the support rod 7 end fixing pin 7.2 limits a displacement of the retaining sleeve 8 along the support rod. 7
• FIG. 7 shows a perspective view of a carrier part 9.1 of a headrest 9.
• the carrier part 9.1 is made of a plastic material and has fastening means 10 for receiving and fastening the locking device 1.
• the support member 9.1 is formed mirror-symmetrically to the xz-plane XZ and has two opposite mounting recesses 9.1 .1, which are adapted to the retaining sleeve 6.3, for fastening the
• Actuator 6 on the support member 9.1 record. It is on the headrest 9 only one actuator 6 attached to either the right side or, alternatively, on the left side in one of the two
• Two mutually parallel holding rods 7, each having a retaining sleeve 8, are inserted in the support member 9.1.
• the retaining sleeve 8 is non-positively and / or positively connected to the support member 9.1, for example by means of a further latching connection.
• the support part 9.1 of the headrest 9 with respect to the support rods. 7
• Locking device 1 is locked there.
• Figure 8 shows a perspective view of an arrangement of a headrest padding 9.2 on the support member 9.1 of the headrest 9.
• the headrest padding 9.2 is made of a plastic foam, so that on a side to which the actuator 6 is to be attached, a corresponding recess, as shown in FIG 8 indicated by a dashed circular contour, from the material of
• Headrest padding 9.2 can be cut out.
• Figure 9 shows a rear view of two unpadded headrests 9, wherein in each case an actuating device 6 to each one of the two
• Headrests 9 is arranged. One of the two headrests 9 has a right side mounted actuator 6, whereas the other of the two headrests 9 has a left side attached
• Actuator 6 has.
• FIG. 10 shows a top view of an alternative embodiment of the locking device 1. Shown is the lower support plate 3.2, in which the bow-shaped locking element 2 is inserted.
• the Locking element 2 has a substantially W-shaped
• Angled section 2.2 which comprises two adjacent, angled sections 2.1.
• circular cross-section forms the round abutment surface 3.1 .5, which abuts the two adjacent, angled sections 2.1 of the substantially W-shaped angled section 2.2.
• the vertical arrangement with respect to the z-axis Z may be reversed from the upper support plate 3.1 and the lower support plate 3.2, i. the lower one
• Support plate 3.2 can be arranged in particular above the support plate 3.1.
• the manual actuation of the actuator 6 causes a relative displacement between the stop pin 3.1 .7 and the lower support plate 3.2 parallel to the y-axis Y. This beats the
• the actuator 6 is manually operated by the user, wherein the actuating element 6.2 is pressed inwards.
• the user exerts the force F to guide the locking element 2 of the locking device 1 from the locked position L to the unlocked position U.
• the locking element 2 remains in the unlocked position U, which allows a height adjustment of the headrest 9.
• the headrest 9 is displaced substantially parallel to the z-axis Z.
• Locking element 2 is exerted by the first spring means 4, guided back into the locked position L. That's what it takes
• the two angled portions 2.1 and the stop pin 3.1 .7 are dimensioned such that the by a user on the
• Actuator 6 exerted force F when pushing the actuator 6.2 is not constant.
• the force F increases initially substantially with increasing displacement of the upper and lower support plate 3.1, 3.2 linear. Reach the well-trained
• Stop surface 3.1 .5 of the stopper pin 3.1 .7 one end of the angled portion 2.1, the abutment surface 3.1 .5 abuts the folded end of the angled portion 2.1 such that a parallel to the y-axis Y spring force acting from the first
• Support plate 3.2 parallel to the x-axis X causes.
• the force F expended by the user of the actuator 6 drops or at least remains constant. This ensures that the locking device 1 for the headrest 9 can be held by the user with a reduced force F in the unlocked state, in which the
• Locking element 2 is positioned in the unlocked position U.

Landscapes

• Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Chair Legs, Seat Parts, And Backrests (AREA)
• Seats For Vehicles (AREA)
• Connection Of Plates (AREA)
• Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44511002

Family Applications (1)

Country Status (7)

Families Citing this family (10)

Citations (6)

Family Cites Families (10)

• 2010
  • 2010-08-26 DE DE201010035429 patent/DE102010035429B4/de not_active Expired - Fee Related
• 2011
  • 2011-08-25 WO PCT/EP2011/064622 patent/WO2012025586A1/de not_active Ceased
  • 2011-08-25 JP JP2013525307A patent/JP5663664B2/ja not_active Expired - Fee Related
  • 2011-08-25 US US13/817,617 patent/US9004602B2/en active Active
  • 2011-08-25 KR KR1020137007549A patent/KR101430073B1/ko not_active Expired - Fee Related
  • 2011-08-25 EP EP11748659.7A patent/EP2608988B1/de not_active Not-in-force
  • 2011-08-25 CN CN201180041372.3A patent/CN103068630B/zh not_active Expired - Fee Related

Patent Citations (6)

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