JPH0131089Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an armrest attached to a seat.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3. Reference numeral 1 denotes a seat mounted on a vehicle such as a bus, and the seat is composed of a seat cushion 2 and a seat back 3. The seat cushion 2 is mounted on a floor 4 via a bracket 4'. A rectangular cylindrical armrest holder 6 is fixed vertically to the other end and rear end of the frame 5 of the seat cushion 2, and a locking hole in the side surface of the armrest holder is into which a lock pin 18 (described later) is locked. 6' is drilled. In the armrest holder 6, a stay 11 is slidably inserted into the armrest holder 6, in which a first member 7 having a U-shaped cross section and a second member 8 having a U-shaped cross section are formed into a rectangular tube shape through bolts 9 and nuts 10. It is fitted. Further, a bent portion of an L-shaped first lever 12 is pivotally supported at the upper end of the second member 8, and a bent portion of an L-shaped second lever 13 is pivotally supported at the lower end of the first member 7. , one end 14 of the second lever and one end 15 of the first lever 12 are connected via a wire 16. The other end 17 of the second lever 13 is provided with a lock pin 18, and the first member 7 corresponding to the lock pin 18 is provided with a through hole 19 through which the lock pin 18 can protrude. Note that 20 is the second
This is a spring that biases the lever 13 in the counterclockwise direction in FIG. An armrest frame 21 having a U-shaped cross section is welded to the upper end of the first member 7, an opening 22 is bored in the lower surface of the frame 21 corresponding to the first lever 12, and the other end 23 of the first lever 12 The portion protrudes into the frame 21 through the opening. Further, openings 24 and 25 are formed in the side wall of the frame 21 on the first member 7 side and in the first member 7 in correspondence with the opening 22, and a guide member 26 with a closed cross section is fixed to the edge of the opening 24. Also, a lock release button 27 is slidably fitted into the guide member, and the lock release button is connected to the first lever 12.
It is configured to abut on the other end 23 of. Note that a snap spring 28 is provided on the outside of the guide member 26.
A part of the snap ring passes through a slit 29 provided on the upper surface of the guide member 26 and projects inwardly of the guide member, and the protruding portion is connected to a groove 3 formed on the upper surface of the lock release button 27.
0 and the lock release button opens 24, 2.
5. I try not to go outside. Further, the upper ends of the armrest frame 21 and the stay 11 are inserted into a recess 32 formed at the lower part of the armrest 31, which has foamed urethane or the like inside its soft skin, and the armrest and armrest frame 2
1 is fixed by appropriate fixing means, and furthermore, the lock release button 27 passes through an opening 33 provided in the armrest 31 and projects to the outside of the armrest 31. In addition, 33 is a stopper pin fixed to the first member 7 to prevent the stay 11 from slipping out from the armrest holder 6 upward in FIG.
4 is a side cover made of resin provided on the side of the seat cushion 2, and a recess 35 is provided in the upper part of the side cover, as shown by the two-dot chain line in FIG. The armrest 31 is accommodated when the armrest 31 is not in use. When the armrest 31 is accommodated in the recess 35, the upper surface 36 of the armrest 31 and the upper surface 37 of the seat cushion 2 are substantially on the same plane, and the side surfaces 38 and front surface 39 of the armrest 31 are on the same surface as the side surface 40 and front surface 41 of the side cover 34. They are arranged to form approximately the same surface.

The operation of the armrest 31 will be explained below. First, when the armrest 31 is in the use state shown by the solid line in FIG. 2, when the lock release button 27 is pressed and moved to the left in FIG. At the same time, the second lever 13 rotates clockwise via the wire 16, and the lock pin 18 comes out of the locking hole 6' of the armrest holder 6, so the stay 11 can slide inside the armrest holder 6, and the armrest 31 can be moved to the unused state shown by the two-dot chain line in FIG. Conversely, when moving the armrest 31 from the unused state shown by the two-dot chain line in FIG. 2 to the used state shown by the solid line, press the lock release button 27 to the left in FIG. 2 and move the armrest 31 upward. When the stopper pin 33 is in approximate contact with the lower end of the stay 11, press the second lock release button 27.
When the pressure to the left in the drawing is stopped, the second lever 13 is rotated counterclockwise in the drawing due to the biasing force of the spring 20, and the lock pin 18 is moved to the armrest holder 6.
The armrest 31 is locked in the locking hole 6' of the second
It is held at the solid line position in the figure.

According to the above structure, when the armrest 31 is not in use, the armrest can be accommodated in the recess 35 of the side cover 34, and the armrest 31 can be accommodated in the recess 35 of the side cover 34.
1 is housed in the recess 35, the armrest 31
The upper surface 36 and the upper surface 37 of the seat cushion 2 are substantially the same surface, and the side surface 3 of the armrest 31
8 and the front surface 39 are substantially flush with the side surface 40 and the front surface 41 of the side cover 34, respectively, so when the user sits on the seat 1 or leaves the seat 1, the armrest 31 does not get in the way, so the user can move easily and the appearance is good. be effective. Furthermore, since the armrest 31 is made of a soft material, when the seat width is narrow, the armrest 31 can be used as a cushion for the seat 1 when placed in the position indicated by the two-dot chain line in FIG. Further, since the lock release button 27 is provided at an easily visible position on the side surface of the armrest 31, operability is improved. Also, the first lever 1 swings when the lock release button 27 is operated.
2 and the second lever 13, which swings via the wire 16 as the first lever 12 swings, are both pivotally supported on the inner surface of the stay 11 and rotated at a predetermined angle, so that sliding movement, etc. The operating resistance is lower than that and stable operation can be obtained.

Furthermore, the stay 11 that is slidably movable in the vertical direction within the armrest holder 6 is constructed by assembling two members each having a U-shaped cross section into a rectangular tube shape. The first to be
The lever 12, the second lever 13, the wire 16, and the spring 20 can be assembled to predetermined parts of the members 7 and 8 before assembling the members 7 and 8 into the rectangular tube shape. This has the effect that the first lever 12, second lever 13, etc. can be easily assembled into the stay 11. Furthermore, in the present invention, since both the stay 11 and the armrest holder 6 that loosely fits and supports the stay 11 are configured in a rectangular tube shape, the stay 11 can move vertically while being restricted from rotating within the armrest holder 6. I can do it. That is, it becomes possible to support the armrest 31 with one stay 11, and there is no need to separately provide a rotation regulating mechanism for regulating the rotation of the stay 11 between the armrest holder 6 and the stay 11, simplifying the configuration. It has the effect of being able to achieve this goal. Furthermore, since the stay 11 is provided near the seat back 3, it is possible to create a feeling of openness without restricting the legs of the seated person.

In addition, in the above embodiment, the armrest holder 6
Although only one locking hole 6' into which the lock pin 18 locks is provided, a plurality of locking holes 6' are provided along the vertical direction in FIG. may be adjusted as appropriate. Further, although the second lever 13 is provided on the first member 7 of the stay 11, the second lever 13 is
It may also be provided on the member 8. Further, although the lock release button 27 is provided at the other end of the armrest 31, the present invention is not limited thereto, and it may be provided at the front end or intermediate portion of the armrest 31.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along the line shown in Fig. 1, and Fig. 3 shows the stay 11 and armrest frame 2 shown in Fig. 2.
1, an armrest 31, etc., in an exploded perspective view. 1: Sheet, 2: Seat cushion, 7: First
Member, 8: Second member, 11: Stay, 12: First
Lever, 13: Second lever, 16: Wire, 1
8: Lock pin, 21: Frame, 27: Lock release button, 31: Armrest, 34: Side cover.

Claims (1)

[Scope of utility model registration request] The armrest holder is fixed to the side edge of the seat cushion frame along the vertical direction and has a rectangular tube shape with a locking hole on the side surface, and the armrest holder is installed near the seat back and has two members each having a U-shaped cross section. one stay that is attached and formed into a rectangular cylinder shape and loosely fitted into the armrest holder so as to be able to slide vertically; and an armrest that is fixed to the upper end of the stay via an armrest frame and extends in the front and back direction of the seat cushion. an L-shaped first lever having a bent portion pivotally supported on the upper inner surface of the stay; an L-shaped second lever having a bent portion pivotally supported on the lower inner surface of the stay; and the second lever. and a connecting member that connects one end of each of the first levers to interlock the two levers, a lock pin provided at the other end of the second lever that is removably connected to the locking hole, and the lock pin. a spring that urges the second lever in a direction in which the second lever engages with the locking hole; A retractable armrest characterized by comprising a lock release button for swinging the two levers in a direction opposite to the biasing direction of the spring via a connecting member.