JP2019010906A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat capable of adjusting the operation angle of an operation lever of a height adjustment mechanism.SOLUTION: A vehicle seat includes a seat cushion having a side frame 111R, a seat back to be connected to the seat cushion, and a height adjustment mechanism 115 for adjusting the height of the seat cushion by moving an operation lever 115a upward or downward. The side frame includes the height adjustment mechanism and a regulation member 116 for regulating the operation range of the operation lever by coming into contact with the operation lever.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to a vehicle seat and can be applied to a vehicle seat including a lifter mechanism.

  A vehicle seat equipped with a lifter mechanism has a seat cushion, a pair of slide rails provided below the seat cushion, an upper end portion that is pivotably attached to the seat cushion side, and a lower end portion that is pivotable to the slide rail side. Has four links attached. And, it has an operation lever that can be tilted on the side of the seat cushion, and a lifter mechanism that adjusts the tilt angle of one of the links and the seat cushion, and by operating the lifter mechanism by tilting the operation lever, The height is adjusted (for example, JP 2009-227208 A).

JP 2009-227208 A

  However, the operation angle of the operation lever of the lifter mechanism (height adjustment mechanism) is set for each height adjustment mechanism, and it is necessary to optimize the operation angle for each applicable vehicle type.

An outline of typical ones of the present disclosure will be briefly described as follows.
That is, the vehicle seat includes a seat cushion having a side frame, a seat back coupled to the seat cushion, and a height adjusting mechanism that adjusts the height of the seat cushion by moving an operation lever up and down. Prepare. The side frame includes the height adjusting mechanism and a regulating member that regulates the operating lever operating range by contacting the operating lever.

  According to the vehicle seat described above, it is not necessary to optimize the height adjustment mechanism for each applicable vehicle type, and the operation angle of the operation lever of the height adjustment mechanism can be adjusted.

It is a figure for demonstrating the example of a structure of the vehicle seat. It is a perspective view from the right front side of the seat frame of the vehicle seat of FIG. FIG. 3 is an enlarged view of the vicinity of a height adjustment mechanism in FIG. 2. It is a side view from the right side of the seat frame of the vehicle seat of FIG. FIG. 5 is an enlarged view of the vicinity of the height adjustment mechanism in FIG. 4. FIG. 6 is a perspective view of the regulating member in FIG. 5.

  Examples will be described below with reference to the drawings. However, in the following description, the same components may be denoted by the same reference numerals and repeated description may be omitted. In order to clarify the description, the drawings may be schematically represented with respect to the width, thickness, shape, etc. of each part as compared to the actual embodiment, but are merely examples, and the interpretation of the present invention is not limited to them. It is not limited.

  FIG. 1 is a perspective view of a vehicle seat from the right front side. In order to facilitate understanding of the structure of the vehicle seat 1, the directions of “front”, “rear”, “left”, “right”, “upper” and “lower” are shown in the figure, and these directions are shown. Is also used to express a relative positional relationship in the following description. These directions correspond to the direction of the vehicle when the vehicle seat 1 is mounted on the vehicle. For example, the front direction of the vehicle seat 1 and the front direction of the vehicle indicate the same direction. Below, although the structure of the vehicle seat 1 suitable for a front right seat (for example, driver's seat) is described, the vehicle seat 1 is applicable also to another seat. In addition, the vehicle seat mounted on the left side of the vehicle has a configuration in which the left and right sides of the vehicle seat 1 are interchanged.

  The vehicle seat 1 includes a seat cushion 10, a seat back 20, a headrest 30, a side cover 40, an operation lever 41, an operation lever 42, a riser 50, and a seat slide adjustment device 60. The seat cushion 10 forms a seating surface. The seat back 20 forms a backrest. The headrest 30 is disposed above the seat back 20 and forms a pillow portion that supports the head of the occupant. The seat slide adjusting device 60 is fixed to the vehicle via the riser 50, and enables the seat cushion 10 to slide in the front-rear direction (position adjustment). In addition, the vehicle seat 1 includes a reclining device (recliner) that enables angle adjustment between the seat cushion 10 and the seat back 20 and a lift device (lifter) that enables height adjustment of the seat cushion 10.

  The operation lever 41 is an operation unit for a reclining operation, and accepts a reclining operation of the vehicle seat 1. The operation lever 42 is an operation unit for lifter operation, and accepts a lift operation of the seat cushion 10.

  A retractor (not shown) of a seat belt device is fixedly installed on the upper right side of the vehicle seat 1 mounted on the vehicle. The webbing pulled out from the retractor is connected to an anchor portion (not shown) on the lower right side of the vehicle seat 1. A tongue plate (not shown) is inserted in the middle of the webbing pulled out from the retractor. The tongue plate is detachable from the buckle 71 connected to the left side frame portion via an anchor portion (not shown).

(Seat frame)
2 is a perspective view from the right front side of the seat frame of the vehicle seat of FIG. FIG. 3 is an enlarged view of the vicinity of the height adjusting mechanism of FIG. 4 is a side view from the right side of the seat frame of the vehicle seat of FIG.

  The seat frame 100 is assembled by a seat cushion frame 110, a seat back frame 120 hinged to the seat cushion frame 110 by a reclining device 114 so as to be tilted forward and angle-adjustable, a left and right seat slide adjusting device 60, and a left and right riser 50. The seat cushion 10 is assembled with a seat cushion frame 110, a seat cushion pad (not shown) and a skin (not shown), and the seat back 20 is a seat back frame 120, a seat back pad (not shown) and a skin (not shown). Assembled in.

  The riser 50 includes a right support portion 50R, a left support portion 50L, and a connecting member 51. The right support portion 50R includes a front leg 52R and a rear leg 53R that are installed on the floor of the vehicle, and a reinforcing member 54R. The same applies to the left support 50L.

  The seat slide adjusting device 60 includes a left slide rail 62L, a left guide rail 61L, a right guide rail 61R, a left guide rail 61L, a left guide rail 61L, and a left slide rail 62L that is supported by being slidably fitted to the right guide rail 61R. The slide rail 62R, the lock mechanism (not shown), the operation mechanism 64, and the like are normally assembled.

  The left guide rail 61L and the right guide rail 61R of the seat slide adjusting device 60 are fixedly mounted on the left support portion 50L and the right support portion 50R, respectively, and the seat cushion frame 110 is placed thereon. A cushion frame 110 is fixedly attached to support the seat cushion 10.

  The seat cushion frame 110 is formed of a substantially rectangular frame serving as a skeleton of the seat cushion 10, and as illustrated in FIG. 2, the left side frame 111L and the right side frame 111R respectively disposed on the left and right sides, A connecting pipe that connects the plate-like frame 112 installed on the front upper surface of the left side frame 111L and the right side frame 111R, and the rear inner surface of each of the left side frame 111L and the right side frame 111R. 113 and a connecting pipe (not shown) for connecting the inner side surface on the front side.

  The left side frame 111L and the right side frame 111R are each made of a sheet metal member extending in the front-rear direction, and the left side frame 111L and the right side frame 111R are separated in the left-right direction in a state of being substantially parallel to each other. doing.

  As shown in FIG. 2, a reclining device 114 that rotatably connects the seat back 20 to the seat cushion 10 is provided at a portion where the right side frame 111 </ b> R and the seat back frame 120 are connected. The reclining device 114 includes, for example, a spiral spring (not shown) that urges the seat back frame 120 in an upright state, and a spring locking member (not shown) that locks the extended end of the spiral spring. Yes.

  A lift device having a plurality of links (not shown) is provided between the seat cushion 10 and the seat slide adjusting device 60. The links are located on the front side and the rear side of the side frames 111R and 111L on both the left and right sides of the seat cushion frame 110, and one end portions are rotatably attached to the side frames 111R and 111L. Then, the other end portion is rotatably attached to the front side portion or the rear side portion of the underframe fixed to the seat slide device 60. Therefore, a four-bar link mechanism is constituted by the pair of front and rear links, the side frame 111R, and the underframe. The seat cushion 10 is supported by a four-bar linkage mechanism on both the left and right sides so as to be movable up and down. A height adjustment mechanism 115 attached to the side frame 111R is connected to the link located on the front side of the side frame 111R. The height adjusting mechanism 115 is positioned in front of the reclining device 114 and the operation lever 114 a of the reclining device 114.

  The right side frame 111R, the reclining device 114, and the height adjustment mechanism 115 are covered with the side cover 40.

  The seat back frame 120 includes a back frame main body 121, a left side frame 122L, and a right side frame 122R.

  The back frame main body 121 is a frame member that forms a skeleton of the seat back frame 120, and is formed by bending a round pipe formed in a cylindrical shape.

  The outer surface of the right side frame 122R is pivotally attached to the inner surface of the right side frame 111R. At this time, a reclining device 114 is assembled between these both surfaces. Thereby, since the seat back frame 120 can be locked with respect to the seat cushion frame 110 at a desired tilt position, the vehicle seat 1 having a reclining function can be obtained.

  A pair of pillar guides 128 for inserting pillars (not shown) of the headrest 30 are attached to the frame 121b in the upper part of the back frame body 121.

  The side cover 40 is attached to the right side frame 111R so as to cover (hide) the side portions of the seat cushion 10, the right side frame 111R, the right slide rail 62R, and the guide rail 61R. This attachment is detachable by, for example, press-fitting protrusions (not shown) provided at a plurality of locations on the inner surface side of the side cover 40 into locking holes (not shown) formed in the right side frame 111R. Can be done.

  The side cover 40 is a synthetic resin molded product, and has an attachment hole and a concave portion (not shown), and an operation lever of the reclining device 114 on the surface side through a through hole provided so as to penetrate the through hole and the concave portion. 41, an operation lever 42 of the lift device and the like are provided so as to be manually operable.

(Height adjustment mechanism)
The height adjustment mechanism will be described with reference to FIGS. FIG. 5 is an enlarged view of the vicinity of the height adjustment mechanism of FIG. FIG. 6 is a perspective view of the regulating member of FIG.

  An operation lever 115 a (42) is attached to the height adjustment mechanism 115. The operation lever 115a has a crank shape in a side view and extends forward from the first portion 115a1 extending forward from the height adjusting mechanism 115, the second portion 115a2 extending upward from the first portion 115a1, and the second portion 115a2. And a third portion 115a3.

  By tilting the operation lever 115a upward from the neutral position, the relative angle between the link and the side frame 111R changes, and the seat cushion 10 moves upward. The seat cushion 10 is raised to a desired height by tilting the operation lever 115a a plurality of times. When the operation lever 115a is tilted downward from the neutral position, the relative angle between the link and the side frame 111R changes, and the seat cushion 10 moves downward. Then, by tilting the operation lever 115a a plurality of times, the seat cushion 10 is lowered to a desired height.

  A restriction member 116 is provided on the side frame 111R below the operation lever 115a as shown in FIG. The regulating member 116 is a bracket made by bending a flat metal as shown in FIG. 6, and is a mechanism for adjusting the operating angle of the operation lever 115a, and adjusts the downward movement range of the operation lever 115a.

  In this case, as an example only, the regulating member 116, which is a separate part, is attached to the right side frame 111R. However, for example, even if it is configured by an extended portion such as the right side frame 111R, what is its role and effect? no change. Therefore, it should not be limited as to whether the regulating member 116 is a separate part or is configured as an integral part of the peripheral member of the operation lever 115a.

  As shown in FIG. 6, the regulating member 116 is substantially parallel to the first portion 116a that contacts the lower end side of the first portion 115a1 of the operation lever 115a, the second portion 116b that is fixed to the side frame 111R, and the second portion 116b. A third portion 116c having a smooth surface. The restriction member 116 is provided at the lower end of the side frame 111R below the height adjustment mechanism 115 and the operation lever 115a, and a contact shape (stopper) of the restriction member 116 is set on the side frame 111R side to operate the height adjustment mechanism 115. When the lever 115a is operated, if it is operated to the target position, the regulating member 116 comes into contact with the lower end side of the first portion 115a1 of the operation lever 115a and is stopped.

  However, this time, as an example only, the restriction member 116 is provided at the lower end of the side frame 111R below the height adjustment mechanism 115 and the operation lever 115a. However, the restriction member 116 is provided above the operation lever 115a. Needless to say, the position of the restricting member 116 is not limited.

  By using the restricting member 116 as a stopper for the operation angle of the operation lever 115a of the height adjustment mechanism 115, the operation angle of the operation lever 115a of the height adjustment mechanism 115 can be arbitrarily set.

  According to this embodiment, it is possible to share a single height brake with a fixed operating angle of the operating lever, and to realize an optimal operating angle for each vehicle type. As described above, the unit cost can be reduced (cost reduction) by improving the height brake sharing rate, and the number of man-hours for management can be reduced by reducing the types of height adjustment mechanisms.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and needless to say, various modifications can be made.

1: Vehicle seat 10: Seat cushion 110: Seat cushion frame 111R: Right side frame 115: Height adjusting mechanism 115a: Control lever 116 regulating member 50: Riser 60: Seat slide device

Claims (3)

The vehicle seat
A seat cushion having a side frame;
A seat back coupled to the seat cushion;
A height adjustment mechanism for adjusting the height of the seat cushion by moving the operation lever up and down;
With
The side frame is
The height adjusting mechanism;
A regulating member that regulates the operation range of the operation lever by contacting the operation lever;
Is provided. The vehicle seat according to claim 1,
The regulating member is provided on the side frame within a movable range of the operation lever,
The operating lever has a portion extending forward from the height adjusting mechanism, and the portion abuts on the regulating member. The vehicle seat according to claim 2,
Furthermore, in order to support the seat cushion so as to be movable up and down, a plurality of links, one end of which is rotatably attached to the seat cushion and the other end of which is rotatably attached to the floor,
The height adjusting mechanism adjusts the height of the seat cushion by adjusting an inclination angle with respect to one of the links and the seat cushion.

Images