JP3585965B2 - Upper and lower seats with shock absorber - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to upper and lower sheets with a shock absorber.
[0002]
[Prior art]
Conventionally, a seat having a cushioning material, a base frame attached to a vehicle body to which the seat is mounted, a link mechanism provided between the seat and the base frame for moving the seat up and down with respect to the base frame, and reducing vertical vibration In the upper and lower seats having a buffer device to be made, the base frame is a pair of left and right sides, a lower parallel frame having a lower U-shaped cross section formed by an outer side plate, a front plate, and an inner side plate, and an inverted U-shape in front view. The lower part is composed of an L-shaped backrest base frame by the front side plate and the outer side plate, and the inner surface of the outer side plate of the backrest base frame abuts the outer surface of the outer side plate of the lower parallel frame. The upper and lower sheets with a shock absorber which are welded and fixed are known.
[0003]
[Problems to be solved by the invention]
In the known example, since the backrest base frame is formed in an L-shape when viewed from the side, management of storage and the like is difficult. Further, since the inverted L-shaped backrest base frame is placed on the rear upper surface of the lower parallel frame and fixed by contacting the lower surface and the side surface at two points, the weight increases to secure the strength of the mounting portion. There is.
[0004]
[Object of the invention]
It has improved strength, reduced weight, simplified storage management, and reduced costs.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a seat 2 having a cushion material 6, a base frame 3 attached to a vehicle body to which the seat 2 is mounted, and the seat 2 provided between the seat 2 and the base frame 3 to attach the seat 2 to the base frame 3. In the upper and lower seats having a link mechanism for moving up and down and a shock absorber for reducing vertical vibration, the base frame 3 is a pair of left and right, and at least a rear portion has an upper surface formed by an outer side plate 27, a front plate 28, and an inner side plate 29. A lower parallel frame 25 having a U-shaped cross section having an opened opening 30 and a flat steel shape having an inverted U-shape in front view and not bent in side view are opened inside by a front side plate 33, an outside side plate 34, and a back side plate 35. The backrest base frame 26 has a U-shaped cross section, and the inner edges of the front plate 33 and the rear plate 35 of the backrest base frame 26 Upper and lower seats with shock absorbers, which are welded and fixed by bringing the front surface of the front side plate 33 of the backrest base frame 26 into close contact with the inner surface of the inner side plate 29 of the part parallel frame 25 and the inner surface of the front plate 28 of the lower parallel frame 25, respectively. It is.
[0006]
【Example】
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes an upper and lower seat. To be configured.
[0007]
The seat 2 is configured by attaching a cushion material 6 surrounded by a skin member to a seat portion and a backrest portion of an L-shaped seat frame 5 as viewed from the side. Reference numeral 7 denotes a horizontal plate provided on the seat portion, and reference numeral 8 denotes a backrest plate provided on the backrest portion.
[0008]
The link mechanism provided between the seat 2 and the base frame 3 is provided with horizontal mounting shafts 10 on the upper left and right sides of the base frame 3, and the base of the arm 11 is rotatably mounted on the horizontal mounting shaft 10. An attachment member 12 is attached to the tip of the arm 11 by a shaft 13, and the attachment member 12 is fixed to the upper backing plate 8, and a base of a lower arm 14 is pivotally attached to a lower portion of the base frame 3. The distal end of the lower arm 14 is pivotally attached to the front lower portion of the seat frame 5.
[0009]
An adjusting shaft 16 is screwed to the upper center of the base frame 3 so as to be vertically movable. A horizontal mounting plate 17 is fixed to a lower portion of the adjusting shaft 16. The upper end is locked, and the lower end of the spring 18 is locked to the lower part of the back plate 8 of the seat 2. The upper part of the damper 19 is attached to the backrest plate 8, and the lower part of the damper 19 is attached to the base frame 3.
[0010]
Therefore, the seat 2 moves up and down by the rotation of the arm 11 and the lower arm 14, and supports the load by the spring 18 and the damper 19.
[0011]
The base frame 3 is formed by fixing an inverted U-shaped backrest base frame 26 to the rear portions of a pair of left and right lower parallel frames 25. The rear portion of the lower parallel frame 25 is formed by an outer side plate 27, a front plate 28, and an inner side plate 29 to open the upper surface in a U-shaped cross section to form an opening portion 30 and open the rear side to form a lower parallel frame. The front portion of the lower frame 25 is formed with an inclined portion 31 which is inclined so as to become lower toward the front following the front plate 28, and is formed as an upper plate 32 following the inclined portion 31, and the front side of the lower parallel frame 25 is lightweight. The inner side plate 29 is omitted in order to form a cross-section with an inverted L-shape.
[0012]
The backrest base frame 26 is formed in a U-shaped cross section by the front side plate 33, the outer side plate 34, and the rear side plate 35, and is bent to have an inverted U-shape in a front view, a side view, and a vertical shape. The lower ends of the backrest base frame 26 are inserted into the openings 30 of the lower parallel frame 25 from above, respectively, so that the front plate 33 of the backrest base frame 26 The inner edge of the rear plate 35 is brought into contact with the inner side plate 29 of the lower parallel frame 25, and the front surface of the front plate 33 of the backrest base frame 26 is brought into close contact with the inner surface (rear surface) of the front plate 28 of the lower parallel frame 25. The parallel frame 25 and the backrest base frame 26 are fixed by welding.
[0013]
Therefore, although the lower parallel frame 25 and the backrest base frame 26 are both made of channel steel, the fixed portion has a box structure to improve the strength.
[0014]
In the embodiment, a portion between the rear upper end surface of the lower parallel frame 25 and the front plate 33 of the backrest base frame 26, an inner surface of the front plate 28 of the lower parallel frame 25, and a front portion of the outer side plate 34 of the backrest base frame 26 and A portion between the inner side plate 29 of the lower parallel frame 25 and the rear plate 35 of the backrest base frame 26 is fixed by welding.
36 is a lower horizontal rod, 37 is a connecting rod, 38 is a damper mounting part, 39 is a spring locking part, and 40 is a cover.
[0015]
[Action]
Next, the operation will be described.
The adjusting shaft 16 and the horizontal mounting plate 17 are mounted on the base frame 3, and the bases of the arm 11 and the lower arm 14 are also mounted respectively. The seat frame 5 of the seat 2 is mounted on the distal ends of the arm 11 and the lower arm 14. When the spring 18 is mounted between the plate 17 and the spring engaging portion 39 below the backrest plate 8 and the damper 19 is mounted between the seat frame 5 and the base frame 3, the seat 2 is interposed via the shock absorber and the link mechanism. Installation and assembly are completed.
[0016]
In this case, the base frame 3 is formed by fixing the lower part of an inverted U-shaped backrest base frame 26 to the rear part of a pair of left and right lower parallel frames 25, and the lower parallel frame 25 is formed of an outer side plate 27 and a front plate 28. And an inner side plate 29 to form a U-shaped cross section, and an opening 30 having an open upper surface. The backrest base frame 26 also has a U-shaped cross section formed by a front side plate 33, an outer side plate 34, and a rear side plate 35. The backrest base frame 26 is inserted through the opening 30 of the lower parallel frame 25, and the inner edges of the front plate 33 and the rear plate 35 of the backrest base frame 26 are brought into contact with the inner side plate 29 of the lower parallel frame 25. The front surface of the front plate 33 of the backrest base frame 26 is brought into close contact with the inner surface (rear surface) of the front plate 28 of the lower parallel frame 25 so that the lower parallel frame 25 and the backrest base frame 26 Since fixed by welding, although both the lower parallel frame 25 and backrest base frame 26 is channel steel, fixed part becomes box structure, preventing deformation, thereby improving the strength.
[0017]
Therefore, the base frame 3 can be formed vertically in a side view, and transportation, storage management, and the like are facilitated.
[0018]
Thus, when the user sits on the seat 2 and travels, and a load is applied to the seat 2, the seat 2 is lowered by the arm 11 and the lower arm 14, and the spring 18 and the damper 19 absorb and reduce the load caused by the lowering. The vertical vibration of the seat 2 is reduced.
[0019]
【effect】
The present invention relates to a seat 2 having a cushion material 6, a base frame 3 attached to a vehicle body to which the seat 2 is mounted, and a seat frame 2 provided between the seat 2 and the base frame 3 to move the seat 2 to the base frame 3. In the upper and lower seats having a link mechanism for moving up and down and a shock absorbing device for reducing vertical vibration, the base frame 3 is a pair of left and right, and at least the rear portion has an upper surface released by an outer side plate 27, a front plate 28, and an inner side plate 29. A lower parallel frame 25 having a U-shaped cross section having an opening 30, a flat steel shape having an inverted U shape in a front view and not bent in a side view, and a front plate 33, an outer plate 34, and a rear plate 35 having a cross section opened inside. The backrest base frame 26 has a U-shaped backrest base frame 26, and the inner edges of the front plate 33 and the rear plate 35 of the backrest base frame 26 are parallel to the lower part. Upper and lower seats with shock absorbers are welded and fixed by bringing the front surface of the front plate 33 of the backrest base frame 26 into close contact with the inner surface of the inner side plate 29 of the frame 25 and the inner surface of the front plate 28 of the lower parallel frame 25, respectively. Therefore, both the lower parallel frame 25 of the base frame 3 and the backrest base frame 26 are made of channel steel, and can be lighter than a pipe or a square-tube-shaped frame. Can be prevented and the strength can be secured. Further, the backrest base frame 26 can be formed in a vertical shape in a side view, so that transportation, storage management, and the like are facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view of a frame including a perspective view of a main part.
FIG. 2 is a side view.
FIG. 3 is a front view in which one side shows a back surface.
FIG. 4 is an exploded perspective view of a base frame.
FIG. 5 is a perspective view of a main part.
FIG. 6 is a plan view of a fixed portion between the lower parallel frame and the backrest base frame.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Upper and lower seat, 2 ... Seat, 3 ... Base frame, 5 ... Seat frame, 6 ... Cushion material, 7 ... Horizontal plate, 8 ... Backing plate, 10 ... Horizontal mounting shaft, 11 ... Arm, 12 ... Mounting member, 13 ... shaft, 14 ... lower arm, 16 ... adjustment shaft, 17 ... horizontal mounting plate, 18 ... spring, 19 ... damper, 25 ... lower parallel frame, 26 ... backrest base frame, 27 ... outer side plate, 28 ... front plate , 29 ... inner side plate, 30 ... opening, 31 ... inclined portion, 32 ... upper plate, 33 ... front side plate, 34 ... outer side plate, 35 ... rear side plate, 36 ... lower horizontal rod, 37 ... connecting rod, 38 ... damper Attachment part, 39 ... spring locking part.

Claims (1)

A seat 2 having a cushion material 6, a base frame 3 attached to a vehicle body to which the seat 2 is mounted, and a link provided between the seat 2 and the base frame 3 for moving the seat 2 up and down with respect to the base frame 3 In the upper and lower seats having a mechanism and a shock absorber for alleviating the vertical vibration, the base frame 3 has a pair of right and left, and at least a rear portion of the opening 30 whose upper surface is opened by an outer side plate 27, a front plate 28, and an inner side plate 29. A lower parallel frame 25 having a U-shaped cross section, and a flat U-shaped flat steel shape which is not bent in side view and has a U-shaped cross section in which the inner side is opened by a front side plate 33, an outer side plate 34, and a rear side plate 35. The backrest base frame 26 is formed of a lower parallel frame 2 and the inner edges of the front plate 33 and the rear plate 35 of the backrest base frame 26. Of the inner surface of the inner side plate 29, the backrest cushioning device with vertical sheets welded by contact respectively with the inner surface of the front plate 28 of the lower parallel frame 25 the front of the front side plate 33 of the base frame 26.

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