JP2015067024A - Seat for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat for an automobile, which enables a device hardly causing resonance, without increasing weight.SOLUTION: An arm rest member 4, which is provided on the width-direction central side of a seat back 2, can be turned upward and downward in a forward tilting position and a standing position, and held in at least the standing position. Only one end of the arm rest member 4 is supported by the seat back 2.

Description

  The present invention relates to an automobile seat mounted on an automobile.

  As a seat mounted in the interior of a conventional automobile, the vibration input to the vehicle body is transmitted to the seat due to unevenness of the road surface as the automobile travels, and the seat also vibrates in synchronization (this resonates) (The same shall apply hereinafter) is known to be a very effective means for automobiles. For example, an automobile seat provided with a dynamic damper is known as Patent Document 1, for example.

JP 2001-161489 A

  However, in such a conventional automobile seat, the weight of the seat increases as the dynamic damper is applied, which may affect the fuel consumption.

  The present invention has been made by paying attention to such a conventional technique, and provides an automobile seat that enables a device that does not easily resonate without increasing its weight.

  The invention according to claim 1 is an automobile seat comprising at least a seat back that is held by a reclining device that is provided on each of the left and right sides, and a seat cushion that holds the seat back, An armrest member is provided on the center side in the vehicle width direction of the seat back, and is configured to be able to rotate up and down at the forwardly tilted position and the standing position, and at least be held at the standing position. Only one end is supported by the seat back.

  The invention according to claim 2 is characterized in that the other end portion of the armrest member is supported by the seat cushion via a vibration absorbing member.

  According to the first aspect of the present invention, only one end portion of the armrest member that is provided on the center side in the vehicle width direction of the seat back and can be rotated up and down at the forwardly tilted position and the standing position and at least held at the standing position. However, since it is supported by the seat back, even if vibrations caused by the traveling of the automobile are applied to the seat, the armrest member in a standing state is cantilevered to produce a dynamic damper effect, and the vibration of the seat It becomes difficult to resonate by acting to counteract. Since the armrest member is a member that is originally incorporated in the seat, not only does the weight increase, but there is no support member on the other end on the side that does not support the armrest member, so that the weight can be reduced. Has an effect.

  According to the second aspect of the present invention, the other end of the armrest member is supported by the seat cushion via the vibration absorbing member. Even if it is added to the armrest member, the other end of the armrest member is also supported, so that the support rigidity is high and the occupant holding function is not impaired. In addition, since the other end of the armrest member is supported via the vibration absorbing member, it is in the same state as the armrest member is cantilevered, so that the dynamic damper effect can be achieved without increasing the weight. Will occur.

1 is a front view of a seat according to a first embodiment of the present invention in which an armrest member is in a standing position. It is a perspective view which shows the frame | skeleton of the seat of FIG. It is a perspective view which shows the frame | skeleton of the seat which made the armrest member of FIG.1 and FIG.2 the front-down position. The graph which shows the effect by the structure in the state shown in FIG. It is a perspective view of the seat which concerns on 2nd Embodiment of this invention and has an armrest member in a standing position. It is an expansion perspective view of the A section of FIG. It is a disassembled perspective view of the support part of FIG. It is a disassembled perspective view shown from an angle different from FIG. It is a perspective view which shows the cross section of the vibrational absorption member of FIG.

  The object of providing an automobile seat that enables a device that does not resonate without increasing the weight is realized by the following configuration. That is, a vehicle seat including at least a seat back that is held by a reclining device that is provided on each of the left and right sides, and a seat cushion that holds the seat back, the vehicle width direction of the seat back On the center side, an armrest member is provided, and is configured to be able to rotate up and down at the forwardly tilted position and the standing position, and at least be held at the standing position, and only one end of the armrest member is Realized by supporting the seat back.

  Hereinafter, the seats 1 and 9 mounted on the automobile according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. The seat 1 and the seat 9 on the opposite side to the seat 1 include a seat 1 that occupies three-fifths of the lateral width of the side panel 15 and a seat 9 that occupies two-fifths of the lateral width of the vehicle body 15 ( It is also called a 6-by-4 split seat.) Reference numeral 16 denotes a side window panel. Reference numeral 17 denotes a roof panel.

  The seat 1 is held by a seat cushion 3 supported on a floor 8 via a pedestal 7 and reclining devices 20 and 21 individually provided on the left and right of the seat cushion 3 and can be tilted at an appropriate angle. The seat back 2, the headrest 5 held by the top 2a of the seat back 2, the right-end 2b of the seat back 2 is forwardly tilted (indicated by a two-dot chain line in FIG. 1), and FIGS. The right armrest member 6 that can be rotated up and down at a standing position indicated by a solid line, a forwardly tilted position at the left end 2c of the seat back 2 (shown by a two-dot chain line in FIG. 1, and indicated by a solid line in FIG. 3) and The left armrest member 4 which is the “armrest member” of the present invention which can be rotated up and down at the standing position shown by the solid line in FIGS. 1 and 2 and can be held at least in the standing position. That. The standing of the left armrest member 4 will be further described. That is, the front end portion 4a of the left armrest member 4 that becomes the front side FR at the forwardly tilted position of the left armrest member 4 faces the upper side UP.

  The seat 9 is held by a seat cushion 11 supported on the floor 8 via a pedestal 14 and reclining devices (not shown) individually provided on the left and right sides of the seat cushion 11 and tilted at an appropriate angle. A possible seat back 10, a headrest 12 held by the top 10 a of the seat back 10, a forwardly tilted position (indicated by a two-dot chain line in FIG. 1) at the left end 10 c of the seat back 10, and a solid line in FIG. 1. And a left armrest member 13 that can be rotated up and down at a standing position shown in FIG. The right end 10b of the seat back 10 is disposed at a position with a gap that does not interfere with the vertical rotation of the left armrest member 4.

  Details of the seat 1 will be described below with reference to FIGS. 2 and 3.

  The seat cushion 3 includes a cushion frame 22 supported via a pedestal 7 of a floor 8, side panels 23 and 24 on which the reclining devices 20 and 21 are supported, and rear sides of the side panels 23 and 24. The rear frame 25 is formed by supporting the left and right sides of the cushion frame 22 including the RR. Reference numeral 26 denotes four wires that can hold a pad (not shown) constructed between the front FR of the cushion frame 22 and the rear frame 25 from the lower DW.

  The seat back 2 includes a movable arm 30 that can be rotated forward and backward FR and RR by the reclining devices 20 and 21 and can be held at an appropriate position, and side panels 31 and 32 that are held by the movable arm 30. A back panel 33 fixed to the side panels 31 and 32 and formed in a closed loop shape when viewed from the front side FR to the rear side RR, and a headrest stay (not shown) of the headrest 5 are held up and down. And headrest holders 34, 34. Reference numeral 35 denotes a retractor on which a safety belt (not shown) can be wound, and a guide member 36 that guides the safety belt so as to restrain an occupant (not shown) appropriately from the retractor 35 is provided. Reference numeral 41 denotes a wire constructed on the back panel 33.

  The right armrest member 6 is pivotally supported by the side panel 31 so as to be vertically rotatable at a forwardly tilted position (indicated by a two-dot chain line in FIG. 1) and a standing position indicated by a solid line in FIGS. .

  The left armrest member 4 includes a closed loop armrest frame 37 that is the same height as the seat back 2 in the standing position shown by a solid line in FIGS. 1 and 2, and a right side that is an “one end” of the armrest frame 37. Only the end portion 4a of the RH is supported, and the armrest frame 37 is set in a forward tilted position (shown by a two-dot chain line in FIG. 1 and indicated by a solid line in FIG. 3) and as shown by a solid line in FIGS. A recliner 38 capable of rotating up and down at a position and capable of being held at least in a standing position, a lock operating means 39 capable of operating the recliner 38 in a locked state and releasing the lock, and a container (not shown) such as a cup The armrest frame 37 is constituted by a cup holder 40 which can be supported in the forward-turned position.

  The operation of the first embodiment of the present invention having the above configuration will be described below.

  Only one end portion 4a of the left armrest member 4 provided at the center side in the vehicle width direction of the seat back 2 and capable of rotating up and down at the forwardly tilted position and the standing position and at least being held at the standing position is the seat back 2. Therefore, even if the vibration caused by the traveling of the automobile is applied to the seat 1, the left armrest member 4 in a standing state is cantilevered to produce a dynamic damper effect, so that the vibration of the seat 1 is reduced. As shown in the graph of FIG. 4, the applicant confirmed that the function of canceling out was 4.5 dB, and it was found that resonance was difficult. Since the left armrest member 4 is a member that has been incorporated in the seat 1 from the past, it is not particularly provided with a dynamic damper, so that it does not increase the weight and does not support the left armrest member 4. Since there is no support member at the other end on the side, the weight can be reduced.

  Hereinafter, the seat 41 mounted on the automobile according to the second embodiment of the present invention will be described with reference to FIGS. The seat 41 is formed by dividing the left and right width of the side panel 15 (see FIG. 1) into two and symmetrically, and the structure will be described with the seat 41 of the right RH as a representative.

  The seat 41 includes a seat cushion 43, a seat back 42 that is held by reclining devices 20 and 21 that are individually provided on the left and right sides of the seat cushion 43, and can be tilted at an appropriate angle, and a top portion of the seat back 42. The headrest 5 held on the right side, the right armrest member 6 that can be rotated up and down at the right end 42b of the seat back 42 and the upright position shown by the solid line in FIG. The left armrest member 44, which is the “armrest member” of the present invention, can be rotated up and down at the fall position and the standing position shown by a solid line in FIG. 5 and can be held at least in the standing position. Reference numeral 51 denotes a headrest arranged on the upper side UP of the standing position shown by the solid line in FIG. 5 of the left armrest member 44.

  Details of the seat 41 will be described below with reference to FIGS.

  The left armrest member 44 has an armrest frame (see reference numeral 37 in FIG. 2) that is the same height as the seat back 42 in the standing position shown by a solid line in FIG. 5 and an “one end” of the armrest frame. A recliner that supports a certain right RH end portion 44a and can rotate the armrest frame up and down to a forwardly tilted position and a standing position shown by a solid line in FIG. 38), and a lock operating means (see reference numeral 39 in FIG. 2) capable of operating the recliner in a locked state and releasing the lock, and a container (not shown) such as a cup tilted forward. And a cup holder (see reference numeral 40 in FIG. 3) that can be supported in position.

  An end portion of the left side LH which is the “other end portion” of the left armrest member 44 is supported by the seat cushion 43 via a vibration absorbing member 45. More specifically, the vibration absorbing member is inserted into the through hole 48a of the bracket 48 that connects the cushion frame 46 of the seat cushion 43 and the armrest frame of the left armrest member 44 (see the armrest frame 37 of FIGS. 2 and 3). 45 is inserted and a special bolt 49 is screwed through a hole 50 in the center of the vibration absorbing member 45.

  The vibration absorbing member 45 includes a first ring 52 made of an iron plate having an inner diameter of 12.1 mm and a plate thickness of 2.0 mm, and an iron plate having an outer diameter of 20 mm and a plate thickness of 1.5 mm. The second ring 53 and the elastic body 54 in the direction perpendicular to the axis are fixed by baking between the first ring 52 and the second ring 53.

  The operation of the second embodiment of the present invention having the above configuration will be described below.

  Since the other end 55 of the left armrest member 44 is supported by the seat cushion 43 via the vibration absorbing member 45, the left armrest member 44 is placed in the forward-turned position and the occupant is not shown through the elbow of the occupant not shown. Even if the weight is added to the left armrest member 44, the other end 55 of the left armrest member 44 is also supported, so that the support rigidity is high and the occupant holding function is not impaired. In addition, since the other end 55 of the left armrest member 44 is supported via the vibration absorbing member 45, the left armrest member 44 is in the same state as cantilevered, so that the weight is increased. There is no dynamic damper effect.

1, 41 Seat 2, 42 Seat back 3, 43 Seat cushion 4, 44 Left armrest member (armrest member)
4a, 44a Left armrest member end 20, 21 Reclining device

Claims (2)

A seat for an automobile comprising at least a seat back that is held by a reclining device that is individually provided on the left and right, and a seat cushion that holds the seat back,
An armrest member is provided on the center side in the vehicle width direction of the seat back, and is configured to be able to rotate up and down at the forwardly tilted position and the standing position, and at least be held at the standing position. Only the one end part of this is supported by the said seat back, The seat for motor vehicles characterized by the above-mentioned. The automobile seat according to claim 1,
The other end of the armrest member is supported by the seat cushion via a vibration absorbing member.

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