JP5198008B2 - Movable headrest - Google Patents

Description

  The present invention relates to a movable headrest, and more particularly to a movable headrest provided with sub headrests that can be rotated on both sides of a main headrest.

This type of movable headrest is disclosed in Patent Document 1, for example. In the movable headrest shown in Document 1, an insert made of a U-shaped pipe is embedded in the main headrest, and both leg ends of the insert projecting downward from the main headrest are placed in the top support hole of the seat back. Inserted and mounted. Sub-headrests arranged on both sides of the main headrest have plate-like connecting members embedded therein, and one end edge of the connecting member is formed into a cylindrical shape, and this cylindrical end edge is the insert in the main headrest. It is attached to the leg part of this so that rotation is possible. Thereby, the sub headrest can be rotated substantially horizontally in the front-rear direction with respect to the main headrest.
JP-A-9-224777

  By the way, in the conventional movable headrest described in the above document, since the rotation axis of the sub headrest is located in the main headrest, when the subheadrest rotates, the end surface thereof is viewed from the front of the seat with respect to the end surface of the main headrest. Moves greatly in the approach or separation direction. For this reason, it is necessary to form a relatively large gap between the sub headrest and the main headrest so that both end surfaces do not interfere with each other, and the bellows is used to shield the gap from the outside while ensuring the contact and separation of the sub headrest. There was a problem that the structure was necessary, the structure was complicated, and the appearance was bad.

  Therefore, the present invention solves such a problem, and an object of the present invention is to provide a movable headrest having a simple structure without the need to provide a bellows or the like for maintaining the appearance.

In order to achieve the above object, according to the first aspect of the present invention, a main headrest (1) that supports the rear surface of the head of a seated occupant and a front and rear with respect to the main headrest (1) disposed on both sides of the main headrest (1) In the movable headrest (H) provided with the secondary headrest (2, 3) that is coupled so as to be relatively rotatable in the direction and supports the side surface of the head of the occupant, from both side end faces (1a, 1b) of the main headrest (1) The protruding stay member (6), the shaft member (64) provided in the vertical direction at the tip of the stay member (6), and the auxiliary headrest (2, 3) provided to rotate to the shaft member (64) A connecting member (7) that can be coupled, and the tip of the stay member (6) is located in the sub headrest (2, 3) and is bent toward the front occupant, and the shaft member (64) is attached to the tip. Is provided .

  In the first aspect of the present invention, the sub headrest can swing around the shaft member in a substantially horizontal plane. Since the shaft member, which is the rotation axis of the sub headrest, is located outside the main headrest, when the sub headrest rotates, the amount by which the end face moves toward or away from the end face of the main headrest in the front view of the seat It can be kept small. Therefore, the gap between the sub headrest and the main headrest can be reduced, the appearance can be improved without using the bellows structure, and the complexity of the structure can be avoided.

  In the second invention, the connecting member (7) is made of a metal plate, and its intermediate part (71) is bent in a substantially circular shape and folded, and the inner peripheral surface of the intermediate part (71) is a shaft member (64). ) And is in contact with the outer peripheral surface with a predetermined frictional force. In the second aspect of the invention, the sub headrest is positioned at an arbitrary swinging position unless a predetermined force is applied, and the sub headrest can be positioned with a simple structure.

  In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

  As described above, according to the movable headrest of the present invention, since it is not necessary to provide a bellows or the like for keeping the appearance, the structure is simple.

  FIG. 1 shows an upper end portion of a seat back S of a vehicle seat provided with a movable headrest H. The movable headrest H includes a main headrest 1 and auxiliary headrests 2 and 3 located on both sides thereof. The main headrest 1 can be adjusted in height in the vertical direction and can be swung in the front-rear direction (arrows in the figure) by the structure described later, and the sub headrests 2 and 3 are located on the side of the main headrest 1 by the structure described later. It can be horizontally rotated from one side to the inside (arrow in the figure).

   2 shows a transparent front view of the movable headrest H, and FIG. 3 shows a transparent side view thereof. A stay member 11 in which a circular pipe material is bent in an inverted U shape is located in the pad of the main headrest 1, and both leg portions 111, 112 protrude downward from the main headrest 1 and the upper end surface of the seat back S Is inserted into a cylindrical holding member S1. The insertion amount of the stay member 11 can be adjusted with a known structure, and the main headrest 1 is mounted on the seat back S so that the height can be adjusted by such a structure.

  A horizontal top portion 113 of the stay member 11 located in the main headrest 1 serves as a shaft member, to which a connecting member 4 is coupled, as shown in FIG. The connecting member 4 is made of a metal plate, and is bent by bending the intermediate portion 41 into a substantially circular shape. Both end portions 42 and 43 of the connecting member 4 are sandwiched between metal frames 52 and 53 in the main headrest 1 by bolts 51 (FIG. 2), and the inner peripheral surface of the intermediate portion 41 is the outer periphery of the shaft member 113. It covers and touches the surface. As a result, the connecting member 4 can be relatively rotated around the shaft member 113 with a predetermined frictional force.

  With the above structure, the main headrest 1 can swing in the front-rear direction around the shaft member 113. In this case, since the coupling member 4 can be relatively rotated around the shaft member 113 with a predetermined frictional force, the main headrest 1 is at an arbitrary swinging position unless a certain force is applied. Positioned. As shown in FIG. 5, the forward swing of the main headrest 1 is regulated by the metal frame 52 provided in the pad contacting the front surface of the leg portion 111 of the stay member 11. Backward swing is restricted by the tip of the rib 541 of the resin frame 54 provided in the pad contacting the rear surface of the leg portion 111 of the stay member 11 (chain line in FIG. 5). Here, the resin frames 54 and 58 are coupled and fixed to the metal frames 52 and 53. The main headrest 1 is swung rearward in a state where the main headrest 1 is pulled upward, and the chain line in FIG. 5 indicates the relative positional relationship with the stay member 11 when the main headrest 1 is swung rearward. Yes.

  In FIG. 2, a stay member 6, which is formed of a circular pipe material in a substantially U shape, passes through the left and right end faces 1 a, 1 b of the main headrest 1, and each stay member 6 has both leg portions. 61 and 62 are positioned up and down, and their ends are joined and fixed to the metal frame 53 in the main headrest 1. The tip portion 63 of each stay member 6 is bent forward (leftward in FIG. 3), and the top portion 64 extends in the vertical direction to form a shaft member. The connecting member 7 (FIG. 2) is coupled to the shaft member 64.

  The connecting member 7 is made of a metal plate, and its intermediate part 71 (FIG. 6) is bent in a substantially circular shape. Both end portions 72 and 73 of the connecting member 7 are fixed to the metal frame 56 in the sub headrest 3 by bolts 55 (FIG. 2), and the inner peripheral surface of the intermediate portion 71 covers the outer peripheral surface of the shaft member 64. I am in contact with this. Thereby, the connecting member 7 can be relatively rotated around the shaft member 64 with a predetermined frictional force. The above structure has been described for the sub headrest 3, but the same applies to the sub headrest 2.

  With such a structure, the sub headrests 2 and 3 can swing in the front-rear direction (vertical direction in FIG. 6) around the shaft member 64 in a horizontal plane. In this case, since the coupling member 7 can be relatively rotated around the shaft member 64 with a predetermined frictional force, the sub headrests 2 and 3 can be arbitrarily swung unless a force exceeding a certain level is applied. Positioned by position. As shown in FIG. 7, the front heads 2 and 3 swing forwardly when the stopper part 571 formed on the bezel 57 provided in the pad contacts the inner surface of the tip part 63 of the stay member 6. (The chain line in FIG. 7), and the backward swing of the sub headrests 2 and 3 is such that the edge of the metal frame 56 provided in the pad contacts the outer surface of the tip 63 of the stay member 6 ( (State of FIG. 7).

  According to the above structure, since the rotation shafts (shaft members) 64 of the sub headrests 2 and 3 are located outside the main headrest 1, when the sub headrests 2 and 3 are rotated, the end surfaces 2a and 3a thereof are It is possible to avoid a large movement in the approaching or separating direction with respect to the end faces 1a, 1b of the main headrest 1 in the front view of the seat. For this reason, since the appearance can be maintained without using the conventional bellows structure, the complexity of the structure can be avoided.

It is a perspective view of the seat back upper end part of the vehicle seat which provided the movable headrest which shows one Embodiment of this invention. It is a see-through | perspective front view of the seat back upper end part of the vehicle seat which provided the movable headrest. It is a see-through | perspective side view of the seat back upper end part of the vehicle seat which provided the movable headrest. FIG. 4 is a vertical sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a vertical sectional view taken along line V-V in FIG. 2. It is a horizontal sectional view along the VI-VI line of FIG. It is a horizontal sectional view along the VII-VII line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main headrest, 1a, 1b ... End face, 2, 3 ... Sub headrest, 6 ... Stay member, 64 ... Tip top part (shaft member), 7 ... Connection member, 71 ... Middle part, H ... Movable headrest.

Claims (2)

A main headrest that supports the rear surface of the head of the seated occupant, and a sub headrest that is disposed on both sides of the main headrest and is coupled to the main headrest so as to be capable of relative rotation in the front-rear direction and to support the side of the head of the occupant. In the movable headrest provided, the stay member protruded from both end surfaces of the main headrest, the shaft member provided in the vertical direction at the tip of the stay member, and the sub headrest are rotatably coupled to the shaft member. A movable headrest in which the tip of the stay member is positioned in the sub headrest and bent toward the front passenger, and the shaft member is provided at the tip . The connecting member is formed of a metal plate, and an intermediate portion of the connecting member is bent in a substantially circular shape, and the inner peripheral surface of the intermediate portion covers the outer peripheral surface of the shaft member. The movable headrest according to claim 1, wherein the movable headrest is movably contacted.

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