Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
  • B61D37/00—Other furniture or furnishings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
  • B60N3/001—Arrangements or adaptations of other passenger fittings, not otherwise provided for of tables or trays

Definitions

• the present invention relates to an arrangement in accordance with the preamble of claim 1 for fastening a furniture item in a vehicle.
• the arrangement comprises an installation means by which the furniture item is positioned, for instance, between two opposing seats or seat sets.
• the invention also relates to a method in accordance with the preamble of claim 10 for fastening a furniture item in a vehicle.
• the object of the present invention is to provide an arrangement that solves the above-described prior art problems in a more reliable manner.
• the invention is based on the idea that by directing and neutralizing forces acting on the furniture item onto the installation means used in the fastening of the furniture item it is possible to control the behaviour of the furniture item and its effect on the environment better than previously.
• a structure of these guide grooves tapering in the direction of forces also transforms effectively the energy contained in this force into deformation of the installation means and kinetic friction. Because internal friction in the installation means comprised by the guide groove and a slide pin increases at the same time, the furniture's possibility to bounce back towards its original position is also reduced.
• Figure 1 shows schematically installation of a table constituting a fixture in a passenger cabin of a vehicle
• Figure 2 is a side view of the fixture of Figure 1 without seat sets
• Figure 3 is an axonometric view of an installation means used in the fastening of the fixture and included in the table
• Figure 4 is a front view of the guide grooves in the installation means, with their slide means
• Figure 5 shows a detail of the guide groove and the slide means therein
• Figure 6 shows the detail in accordance with Figure 5 of the guide groove and the slide means therein, with a locking nut removed
• Figure 7 shows the detail in accordance with Figure 5 of the guide groove and the slide means therein, with a locking nut and a sleeve removed
• Figure 8 shows a section at a sliding pin of the installation means
• Figure 9 shows a detail at a point in the guide groove indicated by dashed lines in Figure 8,
• Figure 10 shows an alternative section at the sliding pin of the installation means
• Figure 11 shows a second alternative section at the sliding pin of the installation means
• Figure 12 illustrates development of the force between the guide groove and the sliding pin in an impact situation.
• the present solution relates to an arrangement by which a furniture item 1 , in particular a fixture such as a table, is installed in a vehicle known per se to a substantially fixed position.
• This installation is carried out, in particular, in a passenger cabin of a vehicle and it protrudes transversally to the travel direction V of the vehicle.
• said travel direction is thus perpendicular to the drawing plane.
• the fixture is illustrated by a table that is arranged in connection with one or more sets of seats 2 protruding likewise transversally to the travel direction of the vehicle.
• the structures defining the passenger cabin there are only shown part of a side wall 3 and part of a floor 4.
• the fixture 1 of the arrangement comprises an inner end 5 and an outer end 6 opposite to one another.
• This fixture is secured at the inner end 5 to a side wall 3 defining the passenger cabin and being substantially parallel with the travel direction of the vehicle. Securing is thus provided by an installation means 7 that in the embodiment of the figure is arranged substantially beneath the fixture 1.
• the installation means may just as well be arranged be- tween the side wall and the furniture item.
• the installation means is connected, on one hand, to the furniture item and, on the other hand, to a conventional frame structure 8 on the cabin wall or substantially in the vicinity thereof, which frame structure is represented in Figure 2 by a tubular beam.
• the latter securing point is preferably close to the passenger cabin floor 4 in accordance with the figure.
• the so-called upper securing provided in the fixture and the so-called lower securing provided in the frame structure are not in immediate connection with one another, but between them there is provided a joint 9 enabling a parallel displacement in the travel direction V of the vehicle.
• a preferred embodiment of the installation means 7 that interconnects the frame structure 8 and the fixture 1 thus comprises, in accordance with Figure 3, an operationally two-piece support structure. From the frame structure projects, substantially vertically, a lower frame part 10 that is connected to an upper frame part 11 thereabove through said joint 9 enabling the parallel displacement.
• the joint comprises the lower, parallel guides 12 oriented in the travel direction V of the vehicle and associating with an upper slide 3 correspondingly oriented in the travel direction of the vehicle.
• the guides 12 and the slide 13 may be shaped in many different ways utilizing technical solutions known per se.
• the guides may be arranged in the upper frame part 11 , in which case they are surrounded by the slide locating in the lower frame part.
• the joint 9 enabling the parallel displacement of the installation means 7 comprises at least one so-called slide means.
• this slide means comprises a slide pin 14 passing through the upper and lower frame parts 10 and 11 placed against one another.
• the slide pin is arranged in a guide groove 15 in the second frame part such that the slide pin is surrounded, when necessary, by a sleeve 16 that extends through the guide groove and after passing therethrough encounters a surface of the adjacent frame part.
• the guide groove 15 is in the lower frame part 10, and the sleeve encounters, after passing therethrough, the surface 17 of the upper frame part 11 , for instance as shown in Figure 9.
• the sleeve 16 is advanta- geously arranged to be longer, to some extent, than the depth of the guide groove, i.e. the thickness of the frame part passed through, whereby a small overflow space 20 will remain between the slide pin head 18 butting against the sleeve and the outer edge 19 of the guide groove.
• the overflow space will be formed, as shown in Figure 9, between a support flange 21 of the sleeve and the outer edge of the guide groove.
• the slide pin 2 After passing through the guide groove 13 the slide pin 2 is arranged into a hole 22 locating in the adjacent frame part and receiving the slide pin. After passing through the hole, the slide pin is tightened against the frame part, for instance, with a nut 23 to be arranged on the opposite side of the frame part with respect to the guide groove.
• the sleeve arranged on the slide pin is advantageously tightened into place with a nut arranged in the opposite end, whereby the sleeve 16 or a like structure prevents the frame parts 10 and 11 from pressing against one another excessively.
• the slide pin may be a bolt whose head butts against the sleeve 16, and the nut 23 will be arranged in the free end of the bolt after it passes through the hole 22 receiving the slide pin.
• the slide pin may further be a means 24 lathed into shape, in accordance with Figures 10 and 11 , in which the slide pin is tightened through a shoulder 25 arranged on the other side of the penetrated hole and a nut arranged on the opposite side.
• the head of this slide pin on the side of the guide groove 5 is advantageously provided with a shoulder or a flange 26, as shown in Figure 11 , so as to provide an overflow space 20 described above.
• material overflow escaping from the forming of the outer edge of the guide groove may be allowed to rise freely along the flank of the slide pin of Figure 10 without pursuing to limit its progress.
• the force acting on the fixture 1 is neutralized with the above-described installation means 7 in such a manner that the movement of the slide pin 14 is arranged to be mechanically decelerating in the guide groove 15.
• This is implemented by forming the guide groove substantially tapering in the travel direction V of the vehicle.
• the slide pin having a uniform cross section, or a uniform sleeve 16 surrounding it, advances in the guide groove and wedges little by little against the walls of the guide groove having a tapering cross section.
• the guide groove may in that case be continuously tapering, or staggeringly tapering, which appears best in Figure 7. Approximately the same end result will be achieved by setting the guide groove of fairly uniform width in cross-section, or the guide groove comprising portions of staggeringly uniform width, at an angle to the travel direction V of the vehicle.
• the installation means 7 As it is conventional that the vehicle moves in two opposite directions, it is advantageous to provide the installation means 7 with at least two slide means formed as mirror images, as shown in Figure 4. In that case the guide grooves 15 are arranged, for instance, to taper in a direction towards one another. When more than two slide means are used, it is advantageous to arrange them in pairs substantially on the same motion axis. The solution involving a plurality of slide pins with heads it is even possible to replace the guides and the slides otherwise present in the joint 9 enabling parallel displacement.
• the present arrangement operates in the following manner.
• the installation means 7 is secured to the frame structure 8 in the wall 3 to support the fixture 1.
• the force F acting on the fixture in an accident is to be neutralized without major injuries caused to the passengers by allowing the fixture to yield slightly by the effect of the force in the travel direction of the vehicle.
• Yielding is realized by arranging in the installation means, between the frame structure and the securing point of the fixture, a joint 9 that enables parallel displacement and divides the installation means into two frame parts 10 and 11 able to move in relation to one another.
• said joint comprises a slide 13 moving along guides 12.
• the parallel displacement is restricted by an intercomponent arrangement, in which a slide pin 14 or 24 is connected to the second frame part, which slide pin extends to and passes through a guide groove 15 in the opposite frame part that limits mechanically the movement of the slide pin.
• a special overflow space 20 may be arranged in the slide means.
• the overflow space is provided in the vicinity of the outer edge 19 of the guide groove 15 by utilizing the geometry of the slide pin 14 or 24, or the sleeve 16 surrounding it.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Connection Of Plates (AREA)
• Body Structure For Vehicles (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=45002566

Family Applications (2)

Family Applications Before (1)

Country Status (2)

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Citations (6)

Family Cites Families (4)

• 2011
  • 2011-09-30 EP EP11183385A patent/EP2574518A1/de not_active Withdrawn
• 2012
  • 2012-09-17 WO PCT/FI2012/050898 patent/WO2013045757A1/en active Application Filing
  • 2012-09-17 EP EP12835165.7A patent/EP2748046A1/de not_active Withdrawn

Patent Citations (6)

Non-Patent Citations (1)

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