JPH02141341A - Side support and lumbar support adjusting device for vehicle seat - Google Patents

Abstract

PURPOSE:To contrive simplification of an adjusting device by providing a change-over clutch for engaging a turning operation member on one side with a turning shaft by the drawing-out or inserting operation of the turning shaft, between the turning shaft provided so as to be insertable in the axial direction and respective turning operation members of a lumber support and side supports. CONSTITUTION:In the case of adjustment of a lumbar support, a turning shaft 25 is drawn out by holding an operation dial 47 for engaging the clutch claw 35 of a changeover clutch 34 with the clutch claw 45 of a turning operation member 26. Next, by turning the operation dial 47, the turning operation member 26 is turned, so that a lumbar plate 22 is moved forward or rearward via a turning plate 20. On the other hand, in the case of adjustment of side supports, the operation dial 47 is pushed to engage the clutch claw 36 of the changeover clutch 34 with the clutch claw 46 of a turning operation member 28. In this condition, by turning the operation dial 47, a screw shaft 29 is tuned, and via a moving shaft 32 and a rod 33 being screwed thereto, turning arms 10, 11 of right and left side plates are turned.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an adjustment device for a side support and a lumbar support of a vehicle seat, in which both can be adjusted using a separate dial.

(Prior art) Japanese Patent Application No. 1983-234495 (
(Undisclosed) has a back seat formed of a central back seat having a lumbar support that can be adjusted in the front-rear direction, and side supports that can be rotated in the left-right direction. A rotating shaft protruding from the shaft is provided, and the rotating shaft can be freely moved in and out in the axial direction, and the protruding end of the rotating shaft has a small diameter circular switching knob for moving the rotating shaft in and out, and a large diameter circular switching knob for rotating the rotating shaft. An operation dial is provided concentrically between the rotating shaft, the lumbar support, and the side support.

This document describes an adjustment device for a side support and a lumbar support of a vehicle seat, which is provided with a switching clutch that transmits rotation to either one by moving the rotating shaft in and out.

(Problem to be Solved by the Invention) The prior application has a small-diameter circular switching knob for moving the 0-rotation axis in and out and a large-diameter circular operation dial for rotating the 0-rotation axis concentrically on the protruding end of the 3-rotation axis. It had a dual structure consisting of a small diameter circular ticket knob and a large diameter circular operation dial.

However, it is possible to use - number of operation dials to both move the rotary shaft in and out and rotate the rotary shaft, and by using only one operation dial, the configuration can be simplified and the cost can be reduced.

(Means for Solving the Problems) Therefore, the present invention includes a central backrest portion 5a having a lumbar support 6 that allows the backrest seat 3 to be adjusted in the front-rear direction, and side supports 5.5 that can be rotated in the left-right direction 7AtIJ. The back seat 3 is provided with a rotating shaft M25 that protrudes in any direction, the rotating shaft M25 is movable in and out in the axial direction, and the rotating shaft δ is provided at the protruding end of the rotating shaft δ. an operation dial 47 that rotates the rotation axis δ while
is provided between the rotary shaft δ and the rotary manipulating members of the ramper support 60 and the side supports 5 and 5, by moving the rotary shaft in and out, one of the rotary manipulating members or This is an adjustment device for a side support and a lumbar support of a vehicle seat, which is provided with a switching clutch that engages with a rotational operation member and transmits rotation.

(Example) An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a vehicle seat 1, with reference numeral 2 representing a seat of the vehicle seat 1, 3 a back seat of the vehicle seat 1, and 4 a headrest attached to the upper part of the back seat 3. As shown in FIG.

Side supports 5.5 projecting forward are provided on both left and right sides of the backrest seat 3, and a central backrest portion 5a having a lumbar support 6 is formed at a portion where the waist and back of the seated person come into contact.

In FIG. 2, 7 is a skeletal frame provided within the back seat 3. As shown in FIG. The skeleton frame 7 is the h lower frame 8
．． 8 and left and right side frames 9 and 9 form a rectangular shape. The upper and lower frames 8, 8 and the side frames 9, 9 are formed of hollow pipes or the like.

lO is the left rotation arm attached to the left side frame 9, l! is a right-handed rotating arm attached to the right side frame 9. Left rotation arm! 0 rotates the cushion material in the left side support 5, and the right rotation arm 11 rotates the cushion material in the right side support 5 in the left-right direction.

The upper part of the left rotation arm 10 is bent rearward, and the rear end is rotatably attached to the upper part of the side frame 9. The lower part of the left rotating arm lO is bent rearward to form a bent member, and the middle part of the bent part l is pivoted to the lower part of the side frame 9 by a pin 13. The bent member projects rearward from the bin 13 to form an arm portion 14, and one end of a connecting rod 15 is pivoted to the arm portion 14.

The upper part of the right rotation arm 11 is also bent rearward, and the rear end is rotatably attached to the upper position of the side frame 9,
The lower part of the right rotation arm 11 is also bent backward to form a bent portion 16.
The rear end of the bent portion 16 is pivotally attached to the lower part of the side frame 9 by a pin 17, and the connecting rod is attached to the intermediate portion of the bent portion 16. Attach the other end of 5 to the shaft.

A mounting base 18 is provided at a desired portion of either the left or right side frame 9. The upper and lower ends of a vertical shaft 19 are pivoted at approximately the midpoint between the left and right sides of the mounting base, and a 0-turn plate is attached to the vertical shaft 19 to rotatably pivot the middle part of a flat rotating plate. ) A ramper plate n is attached to the inner end of 2G via a torsion spring 21.

A bearing 24 is provided on the vertical plate n of the mounting plate, and a left-right rotating shaft is pivotally mounted to the bearing 24 so as to be movable in the axial direction.

The 0-rotation operation member, in which the rotation operation member is freely attached to the bearing 24 inside the vertical plate n, is formed by an eccentric cam having a plurality of engagement recesses n. The outer ends of the rotary plate springs are brought into elastic contact.

A 1-turn operation member n is provided at the tip of the rotation axis δ, and the inner end of the 0-rotation operation member n is formed into a screw shaft 6, and is inserted into an insertion hole (9) formed at the base of the screw shaft. Insert the tip of the rotating shaft 6.

The tip of the screw shaft is attached to the flange 31 on the back side of the mounting base.
Attach to the shaft.

Therefore, the rotation operation member n is supported by the flange 31 and the tip of the rotation shaft B.

A moving shaft is screwed into the screw shaft. One end of the rod is attached to the lower end of the moving shaft, and the other end of the rod is attached to the middle of the bent portion of the left rotating arm 10.The moving shaft is used to rotate the screw shaft. to move in the left-right direction, and the left-right rotating arm 10111 is rotated to the same angle by the rod controller and the connecting rod 15.

A switching clutch is provided on the outer peripheral surface of the rotating shaft δ between the 5-turn operating member and the rotating operating member n. The switching clutch is configured to move together with the rotating shaft δ only in the axial direction of the rotating shaft δ, and to rotate together with the rotating shaft δ.

A clutch claw 5 is formed on the rotary operating member n side of the switching clutch, and a clutch pawl 5 is formed on the rotating operating member j side of the switching clutch.

For each switching clutch, an engagement groove g is formed over the entire circumference of the outer circumferential surface between the clutch pawl back and the clutch pawl end, and an engagement vertical shaft is engaged with the engagement groove g.

The ends of the arm (39) are pivoted to the upper and lower ends of the engaging vertical shaft holder.The arm device (39) is pivotally connected to the base of the arm (39). 41.To be attached to 41 (Fig. 5), the arm device and wings are located between the upper and lower sides of the rotating plate and the upper and lower walls of the mounting base. is provided with another bin 43.43, with a spring tension between the bin 43.43 and the engaging vertical shaft.

Provide a pattern.

When the clutch pawl of the switching clutch engages with the clutch pawl 45 formed on the rotary operating member 5, or when the clutch pawl engages with the clutch pawl 46 formed on the rotary operating member. , energizes the switching clutch U so as to press it against the rotary operating member or the rotary operating member n.

Therefore, the pin 40 is arranged so as to be at the dead center of the spring a according to the engagement vertical @ (and pin invitation), the switching clutch moves, and the arm unit rotates around the pin 40. When the holding vertical axis (vertical shaft) moves to the rotational operation member π side or the rotational operation member n side beyond the bottle chrysanthemum, the switching clutch is held in that position.

An operation dial 47 for adjusting the side support 5 and the lumbar support 6 is fixed to the outer end of the rotation axis δ.

In the figure, 48 is a protrusion formed on the outer peripheral surface of one rotation axis δ, 49
51 is one wheel that fixes the switching clutch; 50 is one wheel that is attached to the bearing 24 that fixes the rotational operation member; 51
is the cushion material, and the back is the epidermis.

FIG. 6 shows a second embodiment, in which the engagement groove r of the switching clutch U
is provided with an engaging vertical shaft (38a) so as to clamp the switching clutch U from both front and rear sides.

The ends of the arms and wings are pivoted to both upper and lower ends of the engaging vertical shaft 38a, and the ends of another arm 53 are pivotally connected to the upper and lower ends of the engaging vertical shaft 38a, respectively. The base of the arm 53 is pivoted with a bottle 40 and a chrysanthemum, and the bottle cutter is attached to the mounting base 18. Between the engaging vertical shaft wing and the engaging vertical shaft 38a. Provide spring material and morning.

(effect) Next, we will discuss the effect.

A. When the adjustment operation dial 47 of the lumbar support is pulled outward, the entire rotating shaft 3 moves outward, and the switching clutch blades provided on the first rotation shaft move outward together with the rotating shaft δ, and the clutch pawl of the switching clutch U moves outward. 5
is engaged with the clutch pawl 45 of the rotary operation member.

Next, when the operation dial 47 is rotated, the rotation shaft 6 rotates, and the switching clutch U is rotated by the protrusion of the rotation shaft δ, and the clutch claw of the switching clutch passes through the clutch claw 6 to the rotary operation member. is rotated, and the end of the rotary play (20) which is in contact with the outer peripheral surface of the rotary operation member is engaged with the other engagement recess n.

Since the engagement recess n rotates the rotary plate about the vertical axis 19 to move the ramper plate η back and forth, the degree of contact of the ramper plate η is adjusted.

In this case, the switching clutch is loosely fitted to the rotating shaft B, but the pin is positioned so that it is at the dead center of the spring with respect to the engagement vertical axis (and the pin). When the arm device rotates around the bottle catch and the engagement vertical axis moves beyond the bottle catch to the rotational operation member 3 side, the spring paulownia 44 moves the clutch pawl 5 of the switching clutch to the rotational operation member. It is energized so as to press against the redundant clutch pawl 6.

B. Adjusting the side support When the operation dial 47 is pressed, the entire rotating shaft 6 moves inward, and the switching clutch provided on the rotational shaft δ moves inward together with the rotating shaft, rotating the clutch pawl of the switching clutch. Engage the clutch pawl of the operating member n.

When the operation dial 47 is rotated in this state, the rotation axis δ
Rotate and switch clutch words.

vJ4! The rotation of the clutch is transmitted by the clutch pawl I and the clutch pawl to the screw shaft of the rotational operation member, and the screw shaft rotates. The rotation of the screw shaft moves the moving shaft to the right, and the moving shaft moves to the left rotating arm 10t- through the rod n.
By rotating the left rotating arm 10, the connecting rod δ
Rotate the right rotation arm U through the side support 5.
, 5 can narrow the horizontal width. On the other hand, in order to widen the width of the side supports 5, 5, the operation dial 47 can be turned in the opposite direction.

As described above, the switching clutch blade can be switched by simply pushing or pulling one operation dial 47, and when rotated, the rotary operating member 3 or the rotary operating member 3 can be operated via the switching clutch. and the structure is simple.

(Effect) Japanese Patent Application No. 1983-234495 (
The one (unreleased) has a structure in which the aifti between the lumbar support and side supports of the backrest seat is controlled by a small diameter circular switching knob that moves the 0 rotation axis in and out, and a large diameter circular operation dial that rotates the 0 rotation axis. It had a dual structure with a small diameter circular switching knob and a large diameter circular operation dial.

However, one aspect of the present invention includes a central backrest portion 5a having a lumbar support 6 that allows the backrest seat 3 to be adjusted in the front-rear direction;
The backrest seat 3 is provided with a rotating shaft 5.5 that is rotatable in the left-right direction, and the rotating shaft δ is provided with a rotating shaft 5 that projects laterally, and the rotating shaft δ is freely movable in and out in the axial direction. The protruding end of the shaft δ is provided with an operation dial 47 for moving the rotary shaft δ in and out and for rotating the rotary shaft. A vehicle seat is provided with a switching clutch between the rotary operating members 4, which engages with either one of the rotary operating members or the rotary operating member to transmit rotation by moving the rotary shaft in and out. Side support and Ramper sabot 1: Because it is a JJi device.

(2) The - operation dials 47 can be used to both move the rotary shaft in and out and rotate the rotary shaft B.

■ By reducing the number of operation dials 47 to one.

The configuration can be simplified and costs can be reduced.

(2) Since the operation is performed using the - operation dials 47, there is no risk of erroneous operation.

- By using only one operation dial 47, the appearance is good.

This effect is achieved.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the seat, Figure 2 is a perspective view of the frame, Figure 3 is a bottom view of the main parts, Figure 4 is a cross-sectional plan view of the main parts, Figure 5 is an exploded perspective view of the main parts, and Figure 6 FIG. 2 is a diagram showing a second embodiment of the switching clutch. Explanation of symbols l...vehicle seat, 2...seat seat, 3...
Seat backrest, 4... Headrest, 5... Side support, 5a... Center backrest, 6... Lumbar support. 7... Skeletal frame, 8... Upper and lower frames, 9...
・Side frame, 10...Left rotation arm, 11...
Right rotation arm, l...Bending portion, 13... Bin, 14
...Arm part, 15...Connecting rod, 16...Bending part, 17...Bin, 1B...Mounting base, 19...
Vertical axis, I mean… rotating plate? ! ... Torsion spring, η... Ramper plate, 23... Vertical plate, 24
...Bearing, δ...Rotary shaft, ...Rotation operation member. n... Engagement recess, 28... Rotation operation member, 29...
・Screw shaft. Blade...insertion hole, 3! ...Flange, Ji...Moving axis, (...Rod, U...Switching clutch, 35.3
6...Clutch pawl, 37...Engagement groove, 3B, 3
8a... Engagement vertical shaft, (... arm, cut... pin,
41, C...Mounting hole, invitation bottle. 44...Spring, 45, Tsukuda...Clutch pawl, 47...
・Operation dial, 0... Projection, a, 50... Genuine, 51... Cushion material, 52... Outer skin, 53.
··arm.

Claims (1)

[Claims] The backrest seat 3 is formed by a central backrest portion 5a having a lumbar support 6 that is adjustable in the front and back direction, and side supports 5, 5 that are rotatable in the left and right directions. A rotating shaft 25 is provided that protrudes in the direction, and the rotating shaft 25 is movable in and out in the axial direction.
An operation dial 47 is provided on the protruding end of the rotary shaft 25 for moving the rotary shaft 25 in and out and for rotating the rotary shaft 25. A side support for a vehicle seat is provided between the members 28, and is provided with a switching clutch 34 that engages with either the rotary operating member 26 or the rotary operating member 28 to transmit rotation by moving the rotary shaft 25 in and out. Lumbar support adjustment device.