JP3649974B2 - Retractable retractable armrest structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a retractable armrest structure for a reclining seat in which an armrest body is provided on a seatback tiltable in the front-rear direction so that the armrest body can be retracted under its flip-up.
[0002]
[Prior art]
Generally, in a retractable armrest that is mounted on a seat of an automobile or the like, the armrest body is in a predetermined retracted position, for example, a side along the seatback, with respect to the seatback while rotating in the flip-up direction. It is provided so that it can be stored in a part position, a storage recess of the seat back or the like, and is used under a forward drawing (rotation) from the storage position.
[0003]
As such a retractable armrest, for example, a structure in which the armrest can be held at its use position under the restriction of rotation with respect to the seat back by a stopper or the like is generally known.
[0004]
[Problems to be solved by the invention]
By the way, in the armrest which supports a seated person's arm, it is desired from the viewpoints of a feeling of use, comfort, etc. that the use position is made substantially horizontal. However, in the known general retractable armrest, since the angle with respect to the seatback in the use position, that is, the support angle is constant, the retractable armrest is attached to a so-called reclining seat in which the seatback can be tilted in the front-rear direction. It is undeniable that the armrest body tilts in the corresponding direction due to the tilt of the seat back.
[0005]
Therefore, for example, a configuration in which the armrest body can be maintained at a substantially horizontal support position without tilting with the seat back is disclosed in Japanese Utility Model Laid-Open No. 06-048446, Japanese Patent Laid-Open No. 10-166919, and the like. However, all of these known configurations have a plurality of link arms, and the movement range thereof is relatively wide, so that the configuration is complicated due to an increase in the number of parts and the space of the mechanism is expanded. Is inevitable.
[0006]
An object of the present invention is to provide a retractable armrest structure for a reclining seat that can maintain an armrest in a substantially horizontal position in spite of a simple configuration.
[0007]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, the armrest hinge is a hinge shaft having one end fixed to the armrest body, and one end of the support arm is formed on the seat side fixing member at a position displaced from the reclining hinge. The other end of the support arm is slidably mounted in a guide hole having a long hole extending linearly in the direction of the reclining hinge, and the other end of the support arm is connected to the free end of the link plate that rotates around the armrest hinge. The link plate is pivotally connected by a lock pin so that the link plate can be rotated relative to the tilt of the seat back. Then, by engaging the lock arm fixed to the armrest hinge with the lock pin at the free end of the link plate used for connecting the support arm, the armrest main body at the use position set by the lock pin is linked to this link pin. It is possible to set and maintain a substantially horizontal state regardless of the tilt angle of the seat back under the rotation of the plate, and to release the engagement between the lock pin and the lock arm when the armrest body is stored, and the seat back. The armrest body can be moved forward and down integrally with the seat back under the sliding of the support arm terminal in the direction of the reclining hinge along the long hole-shaped guide hole with respect to the seat side fixing member following the tilting of the seat Yes.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0009]
As shown in FIG. 1, in a retractable armrest structure 10 for a reclining seat according to the present invention, an armrest body 12 is disposed so as to be rotatable via an armrest hinge 16 with respect to a seatback 14 that can tilt in the front-rear direction. It is installed. The retractable armrest structure 10 is configured such that the armrest main body 12 can be stored in a predetermined storage position of the seat back 14, for example, the storage recess 18, under the rotation of the armrest hinge 16 in the flip-up direction. Is configured (see FIG. 2).
[0010]
As can be seen from FIG. 1, in this reclining seat 20, the seat back 14 is moved back and forth via, for example, a hinge shaft 24 of a reclining base 22 fixed to the floor surface of an automobile, that is, a fixed reclining hinge. It is supported so that it can tilt in the direction. The tilt angle (reclining angle) of the seat back 14 can be arbitrarily adjusted and set under the forward and backward tilting around the reclining hinge (hinge shaft) 24, and the seat cushion 26 can be lifted up. The seat back can be moved forward in the forward space (see FIGS. 3 and 4).
[0011]
The basic configuration of this type of reclining seat 20 is well known, and the configuration itself is not the gist of the present invention, and thus detailed description thereof is omitted here.
[0012]
The armrest hinge 16 is formed as a hinge shaft that protrudes and extends to the side under one end of the armrest body 12 fixed, and the extension end of the hinge shaft is pivoted by a bracket 27 on the seat back 14 side. By supporting the armrest body, the armrest body is rotatably disposed and supported on the seat back. As shown in FIG. 1, in the present invention, a link plate 28 is rotatably disposed around the armrest hinge under the pivot of the base end by the armrest hinge 16, and the reclining hinge. The other end of the support arm 30 whose fulcrum is different from 24 is pivotally connected and connected to the free end of the link plate.
[0013]
For example, a bracket 32 protrudes from a reclining hinge 24 serving as a seat-side fixing member, and one end of a support arm 30 is pivotally attached to the bracket.
[0014]
In the embodiment of the present invention, the pivot hole of the bracket 32 is formed as a long hole-shaped guide hole 33 extending in the direction of the reclining hinge 24, for example, and one end of the support arm 30 is pivoted into the guide hole. By wearing it, the pivot point of the support arm can be slid in the direction of the reclining hinge.
[0015]
In this configuration, the link arm 28 rotates according to the angle of the support arm 30 and is held at that angle. Since the support arm 30 has a fulcrum different from that of the reclining hinge 24, the support arm 30 has its own rotation linked to the tilt of the seat back 14, that is, the relative rotation of the link plate 28 following the tilt of the seat back. However, this configuration is ensured.
[0016]
Furthermore, in the present invention, the lock pin 34 protrudes from the free end of the link plate 28, and the lock arm 36 that can be engaged with the lock pin is fixed to the armrest hinge 16, The armrest body 12 and the armrest body 12 are provided so as to be rotatable.
[0017]
In this configuration, the rotation of the armrest body 12 with respect to the seat back 14 is restricted by the engagement of the lock arm 36 with the lock pin 34 shown in FIG. 1, and this rotation restriction position is used as the use position of the armrest body. It is prescribed.
[0018]
The use position of the armrest body 12 is set and defined as a position where the upper surface 12a serving as a support surface is substantially horizontal.
[0019]
As described above, the retractable armrest structure 10 of the present invention sets and holds the armrest body 12 in its use position under the engagement of the lock arm 36 with the lock pin 34 protruding from the link plate 28. Therefore, the support angle of the armrest main body 12 with respect to the seat back 14 corresponds to and depends on the support angle of the link plate by the support arm 30.
[0020]
That is, even if the seat back 14 is tilted backward from the assumed initial position shown in FIG. 1, the link plate 28 is relatively moved following the tilt of the seat back, so as shown in FIG. The armrest body 12 is maintained substantially horizontal regardless of the backward tilt of the seat back under the rotation of the link plate with respect to the seat back.
[0021]
As described above, according to the retractable armrest structure 10 of the present invention, the armrest body 12 in the use position is maintained substantially horizontal regardless of the tilt angle of the seat back 14, so that the feeling of use and comfort of the seated person can be improved. Improvements such as sex are surely made.
[0022]
In the present invention, the link plate 28 pivotally attached to the armrest hinge 16 is supported by the support arm 30, and the lock arm 36 that can be engaged with the lock pin of the link plate is fixed to the armrest hinge. Therefore, not only the configuration is simplified but also the size can be sufficiently reduced. That is, according to the present invention, since the mechanism portion can be sufficiently reduced in size, the seat back 14 can be easily reduced in thickness without being covered by a cover member or the like. Diversification is possible.
[0023]
Further, as shown in FIG. 2, also in the retractable armrest structure 10 of the present invention, the armrest main body 12 can be stored in the storage recess 18 of the seat back under the flip-up centered on the armrest hinge 16. It has become. In the retracted state, as shown in FIG. 2, since the lock pin 34 and the lock arm 36 are sufficiently separated from each other, even if the seat back 14 is tilted forward in this retracted state, the lock pin 34 and the lock arm 36 Thus, the seat back as shown in FIG. 4 can be moved forward.
[0024]
By the way, in the present invention, since one end of the support arm 30 is pivotally attached to the long hole-shaped guide hole 33 of the bracket, according to this configuration, the support arm 30 is supported in the guide hole when the seatback 14 is tilted forward. The slide of one end of the arm 30 absorbs and guarantees the shift of the movement locus at that time. That is, even if the displacement of the movement trajectory becomes large, since the displacement is absorbed by providing the guide hole 33, this guide hole can be used particularly effectively when the support arm 30 is lengthened. .
[0025]
In this way, if one end of the support arm 30 is pivotally attached to the long hole-shaped guide hole 33 of the bracket, the length of the support arm can be set in a wide range, so that the layout can be diversified and versatile. The retractable armrest can be provided without complicating the configuration.
[0026]
Here, in the embodiment of the present invention, a retractable armrest is illustrated in which the seatback storage recess 18 is the storage position of the armrest body 12. However, the present invention is not limited to this, for example, the seatback 14 side It goes without saying that the present invention can also be applied to a retractable armrest having a configuration in which the position of the armrest body is the retracted position of the armrest body.
[0027]
Further, as the seat side fixing member pivotally attached to one end of the support arm 30, the bracket 32 of the reclining hinge is embodied in this embodiment.
Since it is sufficient to pivotally attach one end of the support arm so that it can be pivoted about a point different from the reclining hinge, the present invention is not limited to this, and other members, for example, a fixed bracket fixed directly to the floor surface, etc. One end of the support arm may be pivotally used.
[0028]
Although the retractable armrest structure of the reclining seat of the present invention is suitable for a retractable armrest mounted on a seat of an automobile or the like, it is not limited to this, and if it is a reclining seat, for example, a sightseeing bus or a long distance Needless to say, the present invention can be applied to any type of vehicle seats such as passenger buses, high-speed trains, passenger ships, passenger planes, etc., or various types of seats for home use or movie theaters.
[0029]
The above-described embodiments are for explaining the present invention, and do not limit the present invention. All modifications, alterations, and the like within the technical scope of the present invention are included in the present invention. It goes without saying that it is done.
[0030]
【The invention's effect】
As described above, according to the retractable armrest structure of the reclining seat according to the present invention, the armrest main body in the use position is maintained substantially horizontal regardless of the tilt angle of the seatback, Improvements such as comfort are surely made.
[0031]
The link plate pivotally attached to the armrest hinge is supported by the support arm, and the lock arm that can be engaged with the lock pin of the link plate only needs to be fixed to the armrest hinge. In addition, the miniaturization can be sufficiently achieved. In other words, in this configuration, since the mechanism part can be sufficiently reduced in size, it is possible to easily reduce the thickness of the seat back without being covered with a cover member, etc. Is fully possible.
[0032]
Further, in the retracted state of the armrest body, the lock pin and the lock arm are in a sufficiently separated position, so that it is possible to ensure that the seat back is moved forward in this retracted state.
[0033]
Then, by pivoting one end of the support arm to the long hole-shaped guide hole, the displacement of the movement trajectory accompanying the forward tilting of the seat back is absorbed and guaranteed under the slide of one end in the guide hole. The length of the support arm can be set in a wide range. Therefore, the layout can be diversified and a retractable armrest having excellent versatility can be provided without complicating the configuration.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a retractable armrest structure for a reclining seat according to the present invention at a use position of an armrest body.
FIG. 2 is a schematic side view of a retractable armrest structure for a reclining seat at a retracted position of an armrest body.
FIG. 3 is a schematic side view of a retractable armrest structure for a reclining seat in a state in which the seat back is tilted backward in a retracted position of the armrest body.
FIG. 4 is a schematic side view of a retractable armrest structure for a reclining seat according to the present invention when the seat back is tilted forward.
[Explanation of symbols]
10 Retractable retractable armrest structure
12 Armrest body
14 Seat back
16 Armrest hinge
28 Link plate
30 Support arm
33 Guide hole
34 Lock pin
36 Lock arm

Claims (1)

A retractable armrest structure for a reclining seat that allows the armrest body provided on the seat back that can be tilted in the front-rear direction to be retracted from the use position to the specified retracted position with the armrest hinge as a center. In
The armrest hinge, a first end fixed hinge shaft to the armrest body,
One end of the support arm is slidably attached to an elongated guide hole formed linearly in the direction of the reclining hinge and formed in the seat side fixing member at a position shifted from the reclining hinge. the other end, the free end of the link plate which rotates with the armrest hinge around by pivotally connected to the locking pin, measure the relative rotation of the link plate that follows the tilting of the seat back the lock arm fixed to the armrest hinge, used for linking the support arm, by engaging in the locking pin of the link plate free end, the armrest body in the use position are thereby set, the It can be set and maintained in the almost horizontal state regardless of the tilt angle of the seat back under the rotation of the link plate. As well as,
The lock pin due to the storage of the armrest body, disengagement between the lock arm, and following the tilting of the seat back, relative to the seat-side fixing member, of the reclining hinge direction along the long hole-shaped guide hole A retractable armrest structure for a reclining seat, wherein the armrest body can be moved forward integrally with the seat back under the slide of the support arm terminal.

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