JP4079741B2 - Vehicle seat structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat structure in a vehicle such as a passenger car, a commercial vehicle, a truck, or a bus.
[0002]
[Prior art]
Some vehicles have a height adjustment mechanism that changes the height of the seat (for example, a height adjustment mechanism that changes the overall height of the seat or a front / rear angle of the seat portion of the seat Height adjustment mechanism etc.).
As disclosed in, for example, Patent Document 1 as a height adjustment mechanism as described above, an operation lever (see FIG. 1 of Patent Document 1) is provided on a lateral side portion of a seat portion (3 in FIG. 1 of Patent Document 1). 1), and 9), and a configuration in which the height adjustment mechanism is operated to change the height of the seat by reciprocating up and down with the front portion of the operation lever.
[Patent Document 1]
JP 2001-150987 A (FIGS. 1 and 2)
[0003]
[Problems to be solved by the invention]
According to the structure of Patent Document 1, since the front portion of the operation lever is located above the upper surface of the seat portion of the seat when the operation lever is not used (see FIG. 1 of Patent Document 1), In addition, the front part of the control lever may get in the way. Accordingly, it can be considered that the front portion of the operation lever is positioned below the upper surface of the seat portion of the seat when the operation lever is not used.
[0004]
However, when the distance between the lateral side portion of the seat portion of the seat and the lining of the door is small, for example, in a light vehicle, the front portion of the operation lever is the seat seat portion when the operation lever is not used as described above. If it is configured to be positioned below the upper surface, it is difficult to say that a hand is inserted between the lateral side portion of the seat portion of the seat and the lining of the door, and the reciprocating operation is performed up and down with the front portion of the operation lever. It can be a thing.
[0005]
In the vehicle seat structure according to the present invention, when a height adjusting mechanism for changing the height of the seat is provided, the distance between the lateral side portion of the seat portion of the seat and the lining of the door is narrow, as in a light vehicle, for example. Even if it exists, it aims at comprising so that it can carry out a reciprocating operation up and down easily with the operation lever not obstructing getting on and off, and holding the front part of an operation lever.
[0006]
[Means for Solving the Problems]
[I]
According to the feature of the first aspect, the height adjustment mechanism for changing the height of the seat is provided, the operation shaft of the height adjustment mechanism is provided on the lateral side portion of the seat portion of the seat, and the operation shaft is within a predetermined angle range. When the height adjustment mechanism is configured to change the seat height by reciprocating rotation driving, the operation lever is attached to the operation shaft, and the operation lever is arranged on the lateral side of the seat portion of the seat for operation. The lever is configured so that the front part of the lever is in a non-use posture positioned below the top surface of the seat portion of the seat and the use posture in which the front portion of the operation lever is positioned above the top surface of the seat portion of the seat. One of the operating lever and the operating shaft is provided with an engaging portion, and the other engaging portion of the operating lever and the operating shaft is provided. When the operating lever is operated in a non-use posture, the engaging portion is separated from the engaging portion. When the operating lever is moved away from the operating position, the engaging portion engages with the locking portion, so that the operating shaft can be reciprocally driven by the operating lever.
[0007]
Thereby, according to the characteristic of Claim 1, in the state which does not use an operation lever, what is necessary is just to operate an operation lever to a non-use attitude | position. In the non-use posture of the operation lever, the front portion of the operation lever is located below the upper surface of the seat portion of the seat, so that the front portion of the operation lever does not get in the way when getting on and off.
[0008]
[II]
In a state where the operation lever is used, the operation lever may be operated to the operation posture. In this case, since the operating lever is simply lifted from the non-use posture to the operating posture, for example, even if the distance between the side portion of the seat portion of the seat and the lining of the door is narrow as in a light vehicle, It is possible to operate from the non-use posture to the operation posture without difficulty.
In the state where the operation lever is set to the non-use posture, the engagement portion is separated from the locking portion, and therefore, when the operation lever is lifted from the non-use posture to the operation posture, the operation shaft is not operated ( The resistance from the operation shaft (height adjustment mechanism) does not apply to the operation lever), and the operation lever can be lifted lightly from the non-use posture to the operation posture.
[0009]
When the operating lever is operated to the use posture, the front portion of the operating lever is positioned above the upper surface of the seat portion of the seat, and the engaging portion engages with the locking portion, and the operating shaft is operated by the operating lever. It will be in the state where reciprocating rotation drive of becomes possible.
In this way, when the front part of the operation lever is positioned above the upper surface of the seat part of the seat, the distance between the lateral side part of the seat part of the seat and the lining of the door is narrow, for example, like a light vehicle Even so, the front portion of the operation lever is held, and the operation shaft can be easily driven to reciprocate and rotate by the operation lever.
[0010]
[III]
According to the feature of claim 2, as in the case of claim 1, the “action” described in the previous item [I] [II] is provided, and in addition to this, the following “action” is provided.
According to the second aspect of the present invention, the biasing mechanism for biasing the operation lever is provided so that when the operation lever is operated to the use posture, the engagement portion is automatically engaged with the locking portion.
As described above, according to the second aspect of the present invention, when the operating lever is operated to the use posture, the engaging portion automatically engages with the locking portion. There is no need to perform another operation for engaging the locking portion.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the vicinity of a driver's seat 1 as a passenger car seat. A pair of left and right lower rails 2 are fixed to a fixed portion of a vehicle body with respect to the driver's seat 1, and a pair of left and right upper rails 3 are It is supported so as to be movable in the front-rear direction. A pair of left and right first support members 4 in the form of vertical walls are fixed to the upper rail 3, and a lock mechanism (not shown) is provided that can fix the upper rail 3 to the lower rail 2 at a desired position. .
[0012]
As shown in FIG. 1, a front link 5 is supported swingably up and down around the horizontal axis P1 at the front of the right and left first support members 4, and extends rearward. A rear link 6 is supported swingably up and down around the horizontal axis P2 at the rear of the first support member 4 and extends rearward. The right and left second support members 7 that support the seat portion 1a of the driver's seat 1 are provided, and the front and rear links 5, 6 swing around the horizontal axis P3, P4 of the right and left second support members. It is connected freely. A backrest portion 1 b of the driver's seat 1 is attached to the rear portions of the right and left second support members 7 via a recliner 8. With the above structure, the height of the driver's seat 1 (the seat 1a and the backrest 1b) can be changed by the front and rear links 5 and 6.
[0013]
As shown in FIGS. 1 and 3, the right second support member 7 is provided with a height adjusting mechanism 9. A sector gear 10 is swingably supported around the horizontal axis P5 of the right second support member 7, and the drive gear 9a of the height adjusting mechanism 9 and the sector gear 10 are engaged with each other. A linkage link 11 is connected across the gear 10 and the rear link 6. An operation lever 12 is provided on the right lateral side (door side) of the seat 1a of the driver's seat 1, and the height adjusting mechanism 9 is operated by the operation lever 12 so that the driver's seat 1 (the seat 1a and the backrest) is operated. Change the height of the part 1b).
[0014]
Next, the structure near the operation lever 12 will be described.
As shown in FIGS. 2 and 3, the operation shaft 13 of the height adjusting mechanism 9 protrudes from the right side portion of the seat portion 1 a of the driver seat 1, and the bracket 14 is fixed to the operation shaft 13. The pin-shaped first engaging portion 15 and the second engaging portion 16 are fixed to the bracket 14 so as to be located opposite to each other, and the first and second engaging portions 15, 16 and the bracket 14 are made of synthetic resin. A cover 17 is attached.
[0015]
As shown in FIGS. 2 and 3, a front portion 12 a that is a handle portion and a short cylindrical base portion 12 b are integrally formed of synthetic resin to constitute an operation lever 12, and the base portion of the operation lever 12 is formed. A plate-like locking plate 18 is fixed inside 12 b, and a cap 19 is attached to the base 12 b of the operation lever 12. A large opening 18a is formed at the center of the locking plate 18, and a concave first locking portion 18b and a second locking portion 18c are formed on the inner peripheral portion of the opening 18a so as to be located opposite to each other. ing. A concave third locking portion 18d is formed near the first locking portion 18b on the inner peripheral portion of the opening 18a, and an inclined portion 18e is formed between the first and third locking portions 18b and 18d. Is formed.
[0016]
As shown in FIGS. 2 and 3, a washer 20 is attached to the first and second engaging portions 15 and 16, and a flange portion 17 a is integrally formed with the cover 17, and the flange portion 17 a and the washer of the cover 17 are formed. A locking plate 18 is sandwiched between 20 and 20. As a result, the operation lever 12 can move slightly with respect to the operation shaft 13 in the direction perpendicular to the operation shaft 13 (left and right direction in FIG. 2 and FIG. 3), but the operation lever 12 moves in the direction of the operation shaft 13. The operation lever 12 is configured not to be detached from the operation shaft 13.
[0017]
The state shown in FIGS. 2 and 4 (a) is a state in which the operation lever 12 is operated in a non-use posture, and the front portion 12a of the operation lever 12 is below the upper surface of the seat portion 1a of the driver's seat 1. positioned. In a state where the operation lever 12 is operated in the non-use posture, the first engagement portion 15 enters the third engagement portion 18 d of the engagement plate 18, and the second engagement portion 16 is the second engagement portion of the engagement plate 18. It has entered the stop 18c.
[0018]
As shown in FIGS. 2 and 3, a spring 21 configured by bending a spring wire into an S shape is attached to an attachment portion 12 c of the operation lever 12, and an end portion of the spring 21 penetrates the cover 17. And is applied to the second engaging portion 16. As a result, in a state in which the operation lever 12 is operated to the non-use posture, the operation lever 12 is pushed to the operation shaft 13 by the spring 21 to the right in FIG. 2 and FIG. The portion 15 is pressed by the third locking portion 18d of the locking plate 18, and the play of the operation lever 12 is suppressed.
[0019]
Next, as shown in FIGS. 4 (a) to 4 (b), when the front portion 12a of the operation lever 12 is lifted in a state in which the operation lever 12 is operated to the non-use posture (for example, sitting on the driver's seat 1). When the occupant lifts his / her finger on the front portion 12a of the operation lever 12), the first engagement portion 15 is engaged with the locking plate 18 while the operation lever 12 tries to rotate around the second engagement portion 16. It hits the inclined part 18e. As a result, the operation lever 12 moves slightly to the left in FIG. 4B against the urging force of the spring 21 by the guiding action of the first engaging portion 15 and the inclined portion 18e of the locking plate 18. When the first engaging portion 15 reaches the first locking portion 18b of the locking plate 18, the operating lever 12 is slightly moved to the right in FIG. 4B by the biasing force of the spring 21. As shown in FIG. 4C, the first engaging portion 15 enters the first locking portion 18b of the locking plate 18. During this time, the operation shaft 13 is not rotationally driven by the operation lever 12.
[0020]
The state shown in FIG. 4C is a state in which the operation lever 12 is operated to the use posture, and the front portion 12a of the operation lever 12 is located above the upper surface of the seat portion 1a of the driver's seat 1. . In a state where the operation lever 12 is operated to the use posture, the first engagement portion 15 enters the first engagement portion 18 b of the engagement plate 18, and the second engagement portion 16 is the second engagement portion of the engagement plate 18. The operation lever 12 is fixed to the operation shaft 13 by entering the stop portion 18c. The operation lever 12 is pushed by the spring 21 to the right of the drawing surface of FIG. 4C with respect to the operation shaft 13, and the first engagement portion 15 is pushed by the first engagement portion 18 b of the engagement plate 18. Twelve backlashes are suppressed.
[0021]
As shown in FIG. 4C, in a state where the operation lever 12 is operated to the use posture, the operation lever 12 is lifted slightly upward from the use posture shown in FIG. By repeating the operation of returning to the use posture shown in (1), the operation shaft 13 is driven to reciprocate within a predetermined angle range. As a result, the drive gear 9a shown in FIGS. 1 and 3 is rotated little by little in the counterclockwise direction in FIG. 1, and the fan-shaped gear 10 is rotated in the clockwise direction in FIG. 1 around the horizontal axis P5. The front and rear links 5 and 6 change the height of the driver's seat 1 (the seat 1a and the backrest 1b) upward.
[0022]
When the operation of the operation lever 12 is stopped, the drive gear 9a is fixed in the height adjusting mechanism 9, and the height of the driver's seat 1 (seat portion 1a and backrest portion 1b) is maintained. When the operation lever 12 is operated slightly downward from the use posture shown in FIG. 4C, the height adjustment mechanism 9 releases the fixing of the drive gear 9a, and the driver seat 1 (seat portion) is moved by the front and rear links 5 and 6. The height of 1a and the backrest 1b) is changed downward.
[0023]
Next, as shown in FIG. 4 (c), in a state where the operation lever 12 is being operated to the use posture, the operation lever 12 is moved obliquely backward and downward against the urging force of the spring 21 (the paper surface of FIG. 4 (c)). When the first locking portion 18b of the locking plate 18 is moved to the left diagonally downward in FIG. 4C, the operation lever 12 is moved to the second engagement position. While rotating around the joint portion 16, the operation lever 12 is pushed down to operate from the use posture shown in FIG. 4 (c) to the non-use posture shown in FIG. 4 (b) through the state shown in FIG. 4 (b). can do. When the operating lever 12 is operated to the non-use posture as shown in FIG. 4 (a), the operating lever 12 is slightly moved to the right of the paper surface of FIG. The part 15 enters the third locking part 18 d of the locking plate 18. During this time, the operation shaft 13 is not rotationally driven by the operation lever 12.
[0024]
[Another Embodiment of the Invention]
In the above-mentioned [Embodiment of the invention], the operating shaft 13 is provided with the first and second engaging portions 15 and 16, and the operating lever 12 is not provided with the locking plate 18, but the operating shaft 13 is provided with the locking plate. 18, and the operation lever 12 may be configured to include the first and second engaging portions 15 and 16. Not only the height adjustment mechanism 9 that changes the overall height of the seat up and down, but also the height adjustment mechanism 9 may be configured to change the front-rear angle of the seat portion 1a of the seat up and down. A coil-type spring (not shown) may be used instead of the spring 21 configured by bending the spring wire into an S shape.
The present invention is provided not only in the right-handle specification driver seat 1 but also in the right-handle specification passenger seat (not shown), the left-handle specification driver seat (not shown), and the passenger seat (not shown). It is also possible to configure.
[0025]
【The invention's effect】
According to the first aspect of the present invention, in the vehicle seat structure, when the height adjustment mechanism for changing the height of the seat is provided, if the operation lever is operated to a non-use posture, the front portion of the operation lever is seated on the seat. Since it is located below the upper surface of the part, the front part of the operation lever does not get in the way when getting on and off, and the boarding and getting-off characteristics can be improved.
[0026]
According to the first aspect of the present invention, when the operating lever is operated to the use posture, the front portion of the operating lever is positioned above the upper surface of the seat portion of the seat, and the engaging portion is engaged with the locking portion. Therefore, even if the distance between the side portion of the seat portion of the seat and the lining of the door is narrow as in a light car, for example, the operation lever can be driven by the operation lever. Thus, the operation shaft can be easily reciprocally driven by the operation lever, and the operability of the height adjusting mechanism by the operation lever can be improved.
[0027]
According to the first aspect of the present invention, even when the distance between the side portion of the seat portion of the seat and the lining of the door is narrow, such as a light vehicle, the operation lever is simply lifted from the non-use posture to the operation posture. The operation lever can be operated from the non-use posture to the operation posture without difficulty and the resistance from the operation shaft (height adjustment mechanism) is not applied to the operation lever. Because of the fact that it can be lifted lightly to the operating position, the operability from the non-use position of the operating lever to the operating position can be improved.
[0028]
According to the feature of claim 2, as in the case of claim 1, the “effect of the invention” of the above-mentioned claim 1 is provided. In addition to the “effect of the invention”, the following “effect of the invention” is provided. It has.
According to the second aspect of the present invention, when the operating lever is operated to the use posture, the engaging portion is automatically engaged with the locking portion. It is no longer necessary to perform another operation for engaging the control lever, and the operability of the operation lever from the non-use posture to the operation posture can be improved.
[Brief description of the drawings]
FIG. 1 is a side view of the height adjustment mechanism in the driver's seat and the vicinity of the operation lever. FIG. 2 is a vertical side view of the operation lever when the operation lever is operated in a non-use position. Cross-sectional plan view [FIG. 4] A vertical side view of the operating lever showing the state in which the operating lever is operated in the non-use posture, the state in which the operating lever is operated in the use posture, and the intermediate state between the non-use posture and the use posture [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat 1a Seat part 9 Height adjustment mechanism 12 Operation lever 13 Operation shaft 15 Engagement part 18b Locking part 21 Energizing mechanism

Claims (2)

A height adjustment mechanism for changing the height of the seat; an operation shaft of the height adjustment mechanism is provided on a lateral side portion of the seat portion of the seat; and the operation shaft is driven to reciprocate in a predetermined angle range. While configuring the height adjustment mechanism to change the height of the seat,
A non-use posture in which an operation lever is attached to the operation shaft, the operation lever is disposed on a lateral side portion of a seat portion of the seat, and a front portion of the operation lever is positioned below the upper surface of the seat portion of the seat; The front portion of the operation lever is configured to be freely operated in a use posture positioned above the upper surface of the seat portion of the seat,
One of the operating lever and the operating shaft is provided with an engaging portion, and the other engaging portion of the operating lever and the operating shaft is provided. When the operating lever is operated in a non-use posture, the engaging portion is A vehicle configured such that when the operating lever is moved away from the locking portion and the operating lever is operated to the use posture, the engaging portion is engaged with the locking portion, and the operation shaft can be reciprocally rotated by the operating lever. Sheet structure. The vehicle seat according to claim 1, further comprising an urging mechanism that urges the operation lever so that the engagement portion automatically engages with the locking portion when the operation lever is operated to a use posture. Construction.

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