JP2018172001A - Armrest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armrest which can reduce or inhibit movement of an occupant during a collision by forcibly moving a part of a body of the occupant.SOLUTION: An armrest 1 is provided at a side of a seat 100 on which an occupant P of a vehicle is seated and includes: a pair of side parts 2 which are provided at left and right sides of the occupant P and extend in a fore and aft direction so that each front arm part of the occupant P may be placed thereon; and a driving part 3 which can move the side parts 2 through driving. The driving part 3 moves the side parts 2 to the rear side and moves a rear part 222 of each side part 2 to the outer side relative to a front part 221 in a seat width direction when a collision occurs or is predicted.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an armrest, particularly an armrest that can reduce or suppress movement of an occupant during a collision by forcibly moving a part of the occupant's body.

  Various airbags and the like have been developed to protect vehicle occupants, such as drivers. For example, a vehicle driver's seat airbag device disclosed in Patent Document 1 includes a main chamber that is deployed in front of the driver and a sub-chamber that is deployed to the side of the main chamber. It is possible to protect even when the driver moves diagonally forward.

JP 2016-199123 A

  For example, a front airbag or the like that is deployed from a steering wheel receives and protects the occupant where the occupant has moved forward due to an impact at the time of a collision. However, reducing or suppressing the forward movement of the occupant by making it difficult for the occupant to move even when an impact is applied is difficult to achieve with a front airbag or the like, and has been dealt with by a rapid winding of the seat belt, etc. . At present, the armrest is not used as an occupant protection member or there are very few examples of use.

  In view of this, the problem to be solved by the present invention is to provide an armrest that can reduce or suppress movement of an occupant during a collision by forcibly moving a part of the occupant's body.

  As a means for solving the above problems, an armrest according to the present invention is provided on the side of a seat on which a vehicle occupant is seated, and is provided on a pair of left and right sides of the occupant, and the forearm portion of the occupant is mounted A side part that extends in the front-rear direction so that it can be placed, and a drive part that can move the side part by driving, and at the time of collision or collision prediction, the drive part moves the side part to the rear side, The rear portion of the side portion is moved outward in the seat width direction relative to the front portion.

  In the armrest according to the present invention, it is preferable that the drive unit moves the rear part to the outside in the seat width direction and moves the front part to the inside in the seat width direction.

  In the armrest according to the present invention, it is preferable that the drive unit moves the side portion to the rear side so that the front and rear positions of the occupant's elbows are the front side or the same position from the shoulder.

  The armrest which concerns on this invention WHEREIN: It is preferable that a side part has a support part which supports a passenger | crew's forearm part in at least any one of the seat width direction outer side of a front part, and the seat width direction inner side of a back part.

  According to the present invention, when the occupant tries to move forward by the movement of the side, the elbow position is at a position where the occupant is pulled to the upper body of the occupant. Or the armrest which suppresses the raise of the injury value which may arise by moving diagonally forward can be provided.

FIG. 1 is a schematic view showing a seat provided with an armrest according to an embodiment of the present invention, FIG. 1A is a schematic side view showing the seat in a side view, and FIG. It is the plane schematic which shows a sheet | seat by planar view. FIG. 2 is a schematic diagram showing a seat driven by a drive unit according to an embodiment of the present invention, and FIG. 2A is a schematic side view showing the seat in a side view, and FIG. FIG. 3 is a schematic plan view showing the sheet in plan view. FIG. 3 is a schematic view showing a seat provided with an armrest according to another embodiment of the present invention. FIG. 3A is a schematic side view showing the seat in a side view, and FIG. FIG. 3 is a schematic plan view showing the sheet in plan view.

(Basic embodiment)
An embodiment of an armrest according to the present invention will be described with reference to FIGS. 1 and 2.
1 is a schematic diagram showing a seat 100 provided with an armrest 1 according to an embodiment of the present invention, and FIG. 1A is a schematic side view showing the seat 100 in a side view. 1 (b) is a schematic plan view showing the sheet 100 in plan view. 2 is a schematic view showing the seat 100 driven by the drive unit 3 according to an embodiment of the present invention, and FIG. 2A is a schematic side view showing the seat 100 in a side view. FIG. 2B is a schematic plan view showing the sheet 100 in a plan view.

  As shown in FIG. 1, the armrest 1 is attached to a seat 100 and includes a side portion 2 and a drive portion 3.

  The side portions 2 are long members that are provided in a pair on the left and right sides of the occupant P and extend substantially parallel to the front-rear direction. The extending direction of the side part 2 may be substantially along the front-rear direction, and may be inclined to some extent vertically or horizontally with respect to the front-rear direction.

  Further, the side part 2 is connected to the seat 100 via the rear part 4. The rear portion 4 is a shaft member that penetrates the seat back 101 in the left-right direction, and is connected to the substantially central portion of the seat back 101 in the vertical direction and to the rear end side of the side portion 2. The rear portion 4 in the present embodiment is fixedly attached to the seat frame 102 disposed in the seat back 101 so as to be immovable in the vehicle front-rear, left-right, and up-down directions.

  The side part 2 has a slide part 21 and a rotation part 22.

  The slide portion 21 is a portion that forms the rear side of the side portion 2. On the rear side of the slide portion 21, a slide groove 23 that penetrates in the left-right direction along the extending direction of the slide portion 21 is provided. By inserting the rear portion 4 into the rear end portion of the slide groove 23, the slide portion 21 is fixed to the sheet 100. The front side of the slide part 21 is connected to the rear side of the rotating part 22. The slide part 21 is formed in a flat plate shape whose front side extends in a substantially horizontal direction. The slide part 21 can be slid rearward by the drive part 3 described later while maintaining the inclination with respect to the horizontal direction.

The rotating part 22 is a part that forms the front side of the side part 2. The rear side of the rotation unit 22 is configured to sandwich the front side of the slide unit 21, and the slide unit 21 and the rotation unit 22 are connected by being pivotally supported by a rotation shaft 24 in the vertical direction. The rotation shaft 24 is disposed substantially along the vertical direction, and the rotation portion 22 is rotatable in the substantially left-right direction around the rotation shaft 24. In the initial state before the collision shown in FIG. 1, the rotating shaft 24 is fixed.
The rotating part 22 is a part on which the forearm part from the elbow to the hand of the occupant P is placed, and the length on the rear side in particular extends to a position where the elbow can be easily placed with the occupant P relaxing. It should be present.

  In the rotating unit 22, a portion on the front side of the rotating shaft 24 configured as the front portion 221 is an example of the front portion in the present invention, and is located on the rear side of the rotating shaft 24 configured as the rear portion 222. A site | part is an example of the back part in this invention.

The drive unit 3 is a member that can move the slide unit 21 and the rotation unit 22 of the side unit 2 by driving. The drive unit 3 includes a first drive unit 31 and a second drive unit 32 as shown in FIG.
When a drive signal is input, the first drive unit 31 causes power to act on the connection portion between the rear portion 4 and the slide portion 21 to move the slide portion 21 rearward.
When the drive signal is input, the second drive unit 32 causes the rotation shaft 24 to rotate with respect to the slide unit 21 by applying power to the rotation shaft 24.
The driving mode of the first driving unit 31 and the second driving unit 32 is not particularly limited as long as it can be driven before the occupant P starts to move forward or obliquely forward due to a collision. For example, in the driving mode using gas pressure There may be a drive form using an actuator that drives at high speed.

The drive unit 3 is driven when a collision occurs or when it is predicted that a collision will occur. In the present embodiment, the detection unit 5 detects a collision or a collision prediction. The detection unit 5 receives, for example, information on the presence or absence of a collision detected by an in-vehicle acceleration sensor, a camera that monitors the outside of the vehicle, a sensor, a radar, or the like, and a collision prediction determined through a driving control system or the like. The
Although the drive unit 3 and the detection unit 5 in the present embodiment are described as independent control members, they may be included in an existing in-vehicle control system such as an operation control system.

  Here, the protection form of the passenger | crew P by the armrest 1 is explained in full detail.

First, the detection unit 5 detects a collision or a collision prediction. The detection unit 5 detects the occupant P, particularly before the upper body starts to move forward or obliquely forward, or immediately after the occupant P starts to move. When the detection unit 5 detects a collision or a collision prediction, a drive signal is input to the drive unit 3.
The detection unit 5 may be capable of mechanically outputting the drive signal of the drive unit 3, and a control unit that performs operation control is provided separately, and the drive signal from the control unit to the drive unit 3 is provided. May be output.

In the drive unit 3 to which the drive signal is input, the first drive unit 31 moves the slide unit 21, and the second drive unit 32 rotates the rotation unit 22.
As shown in FIG. 2A, the first drive unit 31 moves the rear portion 4 backward so as to feed the slide portion 21 backward while maintaining the fixed state to the seat back 101.
Further, as shown in FIG. 2B, the second drive unit 32 rotates the rotation unit 22 around the rotation shaft 24. The rotating part 22 moves the rear part 222 to the outside in the width direction of the seat 100 relative to the front part 221. In the present embodiment, the rotation unit 22 rotates so that the front part 221 moves inward in the width direction of the seat 100 and the rear part 222 moves inward in the width direction of the seat 100.

The forearm portion of the occupant P is forcibly moved by the drive of the drive unit 3.
Specifically, the elbow of the occupant P moves to the rear side by the movement of the slide unit 21 to the rear side by the first drive unit 31. Furthermore, the elbow of the occupant P moves to the outside in the width direction of the seat 100 and the hand moves to the inside in the width direction of the seat 100 by the turning of the turning portion 22 by the second driving unit 32. As a result, the occupant P is forcibly pulled toward the upper body side while projecting the elbow outward in the width direction of the seat 100 as compared to before the collision. That is, the position of the forearm portion of the occupant P placed on the side portion 2 of the armrest 1, particularly the position of the elbow, is regulated.

  Due to the restriction of the elbow position of the occupant P, when the occupant P is about to move forward or obliquely forward in the event of a collision, the forearm portion pulls the upper body through the upper arm portion. Therefore, since the passenger | crew P becomes difficult to move ahead compared with the case where an elbow position is not controlled, the movement of the passenger | crew P can be reduced or suppressed as a result. When the forward movement of the occupant P is reduced or suppressed, it is not necessary to increase the tension of the seat belt for restraining the occupant P, so that an increase in the injury value of the chest can be suppressed. Furthermore, the speed or acceleration hitting the front airbag or the like is reduced, and the impact received by the occupant P is also reduced. Thereby, protection of the passenger | crew P by the armrest 1 is achieved.

  In the present invention, as a range in which the occupant's elbow is moved rearward by the movement of the side portion, the front / rear position of the occupant's elbow is preferably the front side or the same position as the occupant's shoulder. By adopting this range, first of all, when the upper body of the occupant tries to move forward from the elbow and when the upper body tries to move further forward in front of the elbow, the elbow position is restricted. The effect of.

Here, the modification of the armrest which concerns on this invention is demonstrated, referring FIG.
3 is a schematic view showing a seat 100 provided with an armrest 11 according to another embodiment of the present invention, and FIG. 3 (a) is a schematic side view showing the seat 100 in a side view. FIG. 2B is a schematic plan view showing the sheet 100 in a plan view. In addition, about the member similar to embodiment shown in FIG.1 and FIG.2, the same referential mark is attached | subjected and detailed description is abbreviate | omitted.

In the armrest 11 shown in FIG. 3A, a first support part 61 and a second support part 62 are provided as one form of the support part of the present invention.
The first support portion 61 and the second support portion 62 are airbags that are deployed from the rotating portion 22, and before deployment, the bag body is accommodated in the rotating portion 22 together with the inflator.
Specifically, the first support portion 61 is on the outer side in the width direction of the seat 100 of the front portion 221 in the turning portion 22 before turning, and the upper surface on which the forearm portion of the occupant P of the turning portion 22 is placed. It is an airbag developed above the part.
The second support portion 62 is an airbag that is deployed on the inner side in the width direction of the seat 100 of the rear portion 222 in the rotation portion 22 before rotation and above the upper surface portion of the rotation portion 22.

The first support portion 61 and the second support portion 62 project and expand upward from the rotating portion 22 when gas is pressed into the bag body from the inflator at the time of collision or when a collision is predicted. The first support part 61 and the second support part 62 protrude above the rotating part 22 by being deployed at the time of a collision or when a collision is predicted and before the rotating part 22 rotates. When the first support portion 61 and the second support portion 62 are deployed, the first support portion 61 is the hand portion of the occupant P when the second drive portion 32 of the drive portion 3 is driven and the turning portion 22 rotates. Is pushed in the turning direction of the turning portion 22 and the second support portion 62 pushes the elbow portion of the occupant P in the turning direction.
That is, the first support part 61 and the second support part 62 make it easy for the occupant P to follow the movement of the side part 2. When the surface material of the rotating part 22 is formed so as to be slippery, the forearm part of the occupant P completely follows the movement of the side part 2 when the rotating speed, the rotating amount, etc. of the rotating part 22 are large. Although it may become difficult, followable | trackability can be improved by providing the 1st support part 61 and the 2nd support part 62. FIG.

In the present embodiment, the first support portion 61 and the second support portion 62 are provided, but if at least one of the support portions is provided in the present invention, the followability to the movement of the side portion of the occupant's forearm portion is improved. Therefore, it is preferable.
Moreover, instead of the form in which the first support part 61 and the second support part 62 are formed when the drive part 3 shown in FIG. 3 is driven, the position and size where no problem occurs when the occupant P normally uses the armrest. The support portion may be formed in advance using a convex portion or the like that protrudes above the side portion as long as it has the shape and shape.

  As mentioned above, although embodiment which applied the invention made | formed by this inventor was described, this invention is not limited by the description and drawing which make a part of indication of this invention by this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

1 and 11: armrest, 2: side part, 3: drive part, 31: first drive part, 32: second drive part, 4: rear part, 5: detection part, 61: first support part, 62: second Support part, 100: seat, 101: seat back, 102: seat frame, P: passenger

Claims (4)

An armrest provided on a side of a seat on which a vehicle occupant is seated,
A pair of side portions provided on the left and right sides of the occupant and extending in the front-rear direction so that the forearm portion of the occupant can be placed;
A drive unit capable of moving the side part by driving,
At the time of a collision or at the time of collision prediction, the drive unit moves the side part to the rear side, and moves the rear part of the side part to the outside in the seat width direction relative to the front part.
Armrest. The drive unit moves the rear part to the outside in the seat width direction and moves the front part to the inside in the seat width direction.
The armrest according to claim 1. The drive unit moves to the rear side of the side part so that the front and back position of the occupant's elbow is the front side or the same position from the shoulder,
The armrest according to claim 1 or 2. The side portion includes a support portion that supports the forearm portion of the occupant on at least one of a seat width direction outer side of the front portion and a seat width direction inner side of the rear portion,
The armrest in any one of Claims 1-3.

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