JPH02305505A - Arm rest device - Google Patents

Abstract

PURPOSE:To preclude an arm rest from rotation with forward tumbling vigorously by furnishing a resistance applying means between the arm rest and a rotary shaft, wherein the resistance signifies that against arm rest rotation with forward tumbling motion. CONSTITUTION:In the condition that an arm rest 6 is rotated while lifted afloat, the cylinder 11 of an air damper 10 remains retracted in the air damper 10. When the arm rest 6 rotated with forward tumbling with a rotary shaft 7 as the center, the air damper 10 will turn round a pulley 9 together with the arm rest 6 because the pulley 9 is fixed so as not to make rotation relative to the rotary shaft 7, and a wire 12 is wound on the pulley 9 in an amount corresponding to the rotating range (approx. 90deg.) of the arm rest 6. Now the cylinder 11 is drawn out by this wire 12, when the energization being applied on this cylinder 11 works as a resistance to cause it to come out slowly. Thus the arm rest 6 makes rotation with forward tumbling at a low speed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an armrest device, particularly an armrest device for a car seat.

<Prior Art> As a conventional armrest device, for example, one shown in FIG. 7 is well known. A rotation shaft 4 is fixed to a side portion 3 of a seat back 2 of an automobile seat 1, and an armrest 5 is rotatably attached to this rotation shaft 4.

That is, the armrest 5 is attached to the seatback 2 when not in use.
It can be vertically lifted and rotated along the side 3 of the holder, and can also be tilted forward and rotated to a horizontal position when in use.

<Problems to be Solved by the Invention> However, in such a conventional armrest device, the armrest 5 is simply rotatably attached to the rotation shaft 4 fixed to the side portion 3 of the seat back 2. Therefore, when the armrest 5 was folded forward, there was a problem in that the armrest 5 would forcefully fall forward due to its own weight.

If the armrest 5 is tilted forward and rotated too vigorously, if the armrest 5 interferes with a console or the like as equipment in the vehicle interior while the armrest 5 is tilted forward and rotated, there is a risk that such equipment may be damaged. In addition, the armrest 5 itself also has a rotation axis 4.
The surrounding areas were prone to damage, and the ``clank'' impact and impact noise caused by the forward rotation caused discomfort to the seated occupants.

The present invention has been made in view of these conventional problems, and aims to provide an armrest device in which the armrest does not fall forward and rotate violently.

Means for Solving the Problems> In order to achieve the above object, an armrest device according to the present invention is provided with a means for providing resistance to the forward tilting rotation of the armrest between the armrest and the rotation axis. It is.

Therefore, since the armrest does not fall forward or rotate violently, there is no chance of damaging the equipment when the armrest interferes with the interior equipment of the vehicle, and since the impact is small, it does not cause discomfort to the seated occupant. I have nothing to give.

Preferred embodiments of the present invention will be described below with reference to the drawings. Incidentally, the same reference numerals are given to the parts common to the conventional one, and redundant explanation will be omitted.

1 to 4 are diagrams showing an embodiment of the present invention.

The armrest 6 according to this embodiment has a hollow structure, and the illustration of the skin material etc. is omitted in the figure. and,
A rotation shaft 7 fixed to the side portion 3 of the seat back 2 is rotatably inserted into the hollow armrest 6. A pulley 9 having a groove 8 formed on its outer periphery is attached to a rotation shaft 7 located within the armrest 6. This pulley 9 is integrally fixed to the rotating shaft 7,
It is configured not to rotate relative to the rotation axis 7.

And 1. There is also an air damper 1 inside the armrest 6.
0 is provided, and the cylinder 1 of this air damper 10
1 and the pulley 9 are connected by one wire 12. That is, one end 12a of the wire 12 is locked to the cylinder 11 of the air damper 10, and the other end 12b is locked to the groove 8 of the pulley 9 while being slightly wrapped around it.

The air damper 10 is provided at a constant inclination angle θ so that the wire 12 extending tangentially from the pulley 9 and the cylinder 11 are in a straight line. The cylinder 11 of the air damper 10 is biased so as to be drawn into the air damper 10, and this biasing force becomes a constant resistance force when the cylinder 11 is pulled out from the air damper IO.

The above is the structure of the armrest device according to this embodiment, and the pulley 9, air damper 10, wire 12, etc. constitute a resistance applying means.

Next, the operation will be explained. When the armrest 6 is raised and rotated (see FIG. 2), the cylinder 11 of the air damper 10 is retracted into the air damper 10. Then, when the armrest 6 is tilted forward and rotated around the rotation axis 7, the air damper 10 is moved along with the armrest 6 to the pulley 9, since the pulley 9 is fixed so as not to rotate relative to the rotation axis 7. The wire 12 is wound around the pulley 9 by an amount corresponding to the rotation range (approximately 90 degrees) of the armrest 6. Therefore, the cylinder 11 will be pulled out by the wire 12, but since a certain biasing force is applied to the cylinder 11, this biasing force becomes a resistance force and the cylinder 11 is gradually and slowly pulled out. He will be exposed.

Therefore, the armrest 6 does not fall forward, but rotates forward at a slow speed.

Incidentally, when lifting and rotating the armrest 6 again, the urging force of the cylinder 11 helps and the armrest 6 can be lifted and rotated with a lighter force than before.

FIGS. 5 and 6 are diagrams showing other conventional examples of the present invention. In this embodiment, the rotation shaft 13 is inserted into the armrest 14, and a large diameter stopper portion 15 is provided at the inserted end. Further, a disk-shaped bracket 16 is integrally provided on the outer side of the rotation shaft 13. A bolt 17 is screwed into this brat 16 from the outside, and the tip of this bolt 17 is brought into contact with a resin receiving part 19 provided on a side surface 18 of the armrest 14. The above is the structure of the armrest device according to this embodiment,
Said bracket 16, bolt 17°°".

The resistance imparting means is constituted by the above.

Therefore, since the tip of the bolt 17 is in contact with the receiving part 19 provided on the side surface 18 of the armrest 14, when the armrest 14 is tilted forward or lifted up and rotated, the tip of the bolt 17 and the receiving part 19 are kept constant. Because the armrest 14 slides with the frictional force (resistance force) of Become. In addition, this frictional force (resistance force) is
4, and prevents the armrest 14 from accidentally falling forward by itself due to vibrations during driving, sudden braking, etc. Furthermore, since the receiving part 19 is interposed between the bolt 17 and the armrest 14, the side part 18 of the armrest 14 and the bolt 17 do not rub against each other directly, so that the armrest 14 is protected and abnormal noises are generated. do not. Further, since the frictional force between the bolt 17 and the receiving portion 19 can be adjusted by adjusting the tightening condition of the bolt 17, it is possible to easily obtain the optimum frictional force depending on the type of armrest 14 and its own weight.

<Effects of the Invention> The armrest device according to the present invention has the content as described above, and since the armrest does not fall forward forcefully, when the armrest interferes with vehicle interior equipment, they may be damaged. Furthermore, since the impact when tilted forward is small, it does not cause discomfort to the seated occupant.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing an armrest according to an embodiment of the present invention, Fig. 2 is a schematic side view showing the armrest in a lifted and rotating state, and Fig. 3 shows the armrest in a forward and rotating state. Schematic side view; Figure 4 is a sectional view taken along the line IV-IV in Figure 3;
6 is a partially cutaway perspective view showing an armrest according to another embodiment of the present invention, FIG. 6 is a sectional view taken along the line VI-VI shown in FIG. 5, and FIG. 7 is a conventional example of the present invention. It is a perspective view showing such an armrest device. 2- Seat pack 3-... Side part 4.7.13- Rotation shaft 5.6.14- Armrest Fig. 1 Fig. 2 Fig. 3

Claims (1)

[Scope of Claims] An armrest device in which an armrest is attached so that it can be tilted forward and lifted up and rotated with respect to a rotational shaft fixed to the side of a seat back, wherein between the armrest and the rotational shaft, the armrest is An armrest device characterized by being provided with means for imparting resistance to rotation.