JPH0440539Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a side support mechanism, and more specifically, a pair of fixed brackets are fixed to the side frame of a seat at appropriate intervals,
The present invention relates to a side support mechanism in which bent portions at both ends of a side support frame are rotatably supported by the pair of fixed brackets, and the inclination angle of the side support frame is adjusted by an inclination angle adjustment mechanism.

[Conventional technology]

2. Description of the Related Art Conventionally, side support mechanisms have been adopted in vehicle seats to improve the ability to hold a seated person. This side support mechanism 1 has a seventh
As shown in the figure, a screw shaft 3 is provided between a pair of side frames 2, 2, and normal and reverse threaded portions 3a and 3b are formed on the left and right sides of the screw shaft 3, respectively. , 3b, respectively, and move the movable members 4, 4 in the left-right direction by rotation of the screw shaft 3,
The inclination angles of the side support frames 5, 5 connected to the movable members 4, 4 are adjusted symmetrically.

[Problem that the invention attempts to solve]

However, since the conventional side support mechanism 1 is mechanically large, there is little freedom in design, and the position of the operation knob 6 formed at the outer end of the screw shaft 3 is fixed, resulting in poor operability. In addition, when adjusting the inclination of the side support part 7 in a direction that strongly holds the seated person, the skin material and pad material of the side support part 7 come into contact with the screw shaft 3, etc., making operation difficult. For this reason, an elongated hole or the like is provided in the side support portion 7 at the contact portion, but if such an elongated hole is provided, there is a risk that the appearance will deteriorate.

The purpose of the present invention is to simplify the configuration of the side support mechanism and improve operability, and to provide an operation knob on the side support part, and to move the operation knob according to the adjustment of the inclination angle of the side support part. To provide a side support mechanism with an excellent appearance without the need to provide a long hole or the like in the side support part.

[Means for solving problems]

The present invention was developed in view of the above-mentioned problems, and a pair of fixed brackets are fixed to the side frames of the seat at appropriate intervals, and bent portions at both ends of the side support frame are rotatable on the pair of fixed brackets. In the side support mechanism, the inclination angle of the side support frame is adjusted by an inclination angle adjustment mechanism, and the inclination angle adjustment mechanism includes a U-shaped support bracket fixed to the side support frame, and a U-shaped support bracket fixed to the side support frame. It has a support rod pivotally supported by a bracket, and a rotating shaft pivotally supported by the fixed bracket, an insertion hole is formed in the support bracket and the rotating shaft, a screw hole is formed in the support rod, and a center The tip of the operating shaft having a threaded portion nearby is inserted through the insertion hole of the support bracket, the threaded portion is screwed into the threaded hole of the support rod, the tip is inserted into the insertion hole of the rotating shaft, and the operating shaft is inserted into the insertion hole of the rotating shaft. The support rod is provided so as to be movable in the axial direction of the operating shaft by rotation.

[Effect]

According to the present invention, as the operating shaft rotates, the supporting rod that is threadedly engaged with the threaded portion of the operating shaft moves in the axial direction of the operating shaft, and the supporting bracket that pivotally supports the supporting rod and the supporting bracket are fixed. The side support frame rotates with respect to the fixed bracket and the side frame, and the inclination angle of the side support part is adjusted. At this time, the operating shaft and the operating knob at the tip of the operating shaft move together with the support rod, and the angle of inclination of the side support part is adjusted relative to the side support part. The positional relationship does not change.

〔Example〕

An embodiment of the side support mechanism according to the present invention will be described in detail below with reference to the drawings.

1 to 4 schematically show an embodiment of the present invention, and this side support mechanism 1
1 can be applied to both a seat bag and a seat cushion, but in this embodiment, the case where it is applied to a seat bag 12 will be explained.

Pair of side frames 1 of seat back 12
5 and 16 have fixed brackets 17 and 18, respectively.
9 and 20 are fixed at appropriate intervals in the vertical direction. The fixed bracket 17, 18; 1
9, 20 have side support frames 21, 22
Bent portions 23 and 24 formed at both ends of the
is pivotably supported. The fixed bracket 20 is provided with an inclination angle adjustment mechanism 31 for the side support parts 13, 13, and the left and right side support parts 13, 13 are linked together by a connection link mechanism 45.

The fixed bracket 20 on which the inclination angle adjustment mechanism 31 is provided includes a pair of bracket parts 26 and 27 formed in a U-shape when viewed from the side, and one bent part 24 of the side support frame 22 is attached to one of the bracket parts 26. A bent portion 29 of an intermediate frame 28 provided in the middle of the side support frame 22 is pivotally supported on the other bracket portion 27 . Further, the other bent portion 24 of the side support frame 22 is pivotally supported by a fixed bracket 19 that is paired with the fixed bracket 20. Note that the other bent portion 24 of the side support frame 22 may be directly supported by the other bracket portion 27 without providing the intermediate frame 28.

Both ends of a support bracket 32 formed in a substantially U-shape are fixed to the lower frame 22a of the side support frame 22 and the intermediate frame 28,
The support bracket 32 has an insertion hole 33 formed in its center. Both ends of a support rod 34 having a screw hole 35 in the center are pivotally supported on the support bracket 32.

Also, the bracket portion 2 of the fixed bracket 20
Both ends of a rotating shaft 37 having an insertion hole 38 between 6 and 27 are rotatably supported, and this insertion hole 38, the screw hole 35, and the insertion hole 33 are arranged on a straight line facing each other. . These insertion holes 33, 3
8 and the screw hole 35, an operating shaft 41 is inserted therein.

The tip of the operating shaft 41 is formed into a cylindrical shape, and is rotatably inserted into the insertion hole 38 of the rotating shaft 37. An E-ring or the like is attached to the tip of the operating shaft 41 that protrudes from the insertion hole 38. is prevented from slipping out from the rotating shaft 37. Also, the operation axis 4
A threaded portion 42 is formed near the center of the shaft 1, and this threaded portion 42 is screwed into the threaded hole 35 of the support rod 34, so that the support rod 34 rotates as the operation shaft 41 rotates.
It is designed to move in the axial direction. The outer end of the operation shaft 41 protrudes outside the insertion hole 33 of the support bracket 32, and the operation knob 4 is attached to this protrusion.
3 is fixed. Incidentally, as shown in FIG. 5, the shape of the support bracket 32 may be modified.

As an example, the connecting link mechanism 45 is provided between the fixed brackets 17 and 19, and includes a side support frame 22 that is pivotally supported by the fixed bracket 19.
A first link 46 projecting upward is fixed to the tip of the bending part 24, and a second link 47 projecting downward is fixed to the tip of the bending part 23 pivotally supported on the fixed bracket 17. The connecting rod 48 is pivotally supported between the first link 46 and the second link 47, but the present invention is not limited to this.

In such a configuration, when the operation knob 43 is rotated from the state shown in FIG. 3, the support rod 34 that is threadedly engaged with the operation shaft 41 moves in the direction of the arrow a, which is the axial direction of the operation shaft 41. Since the support rod 34 is fixed to the support bracket 32 and the support bracket 32 is fixed to the side support frame 22, the rotation shaft 3
7 and the support rod 34 becomes narrower, and the side support frame 22 moves closer to the bent portion 2 according to this distance.
4, 24, and 29 in the counterclockwise direction shown by arrow b (see Fig. 4).

As shown in FIG. 6, the rotation of one side support frame 22 causes the first link 46 of the connecting link mechanism 45 to rotate, and in response to this rotation, the connecting rod 48 moves in the left-right direction, and the second The link 47 is rotated, and the other side support frame 21 is rotated symmetrically with the one side support frame 22.

In this case, the positions of the operating shaft 41 and the operating knob 43 in the side support section 13 are fixed as shown in FIG. 2, and the operating shaft 41 and the operating knob 43 also move as the side support frame 22 tilts.

The embodiment described above merely shows one embodiment of the present invention, and the side support frame 2
1, 22, fixed bracket 17, 18; 19, 2
0, support bracket 32, support rod 34, rotation shaft 3
7. The shape of the operating shaft 41 etc. is not limited to that shown in the drawings, and may be modified in various ways.

[Effect of idea]

The above is the configuration of one embodiment of the side support mechanism according to the present invention. According to this configuration, the side support part can be adjusted easily and quickly using the inclination angle adjustment mechanism, and the mechanism is simple and compact. Transformation,
Since the operation knob moves together with the side support part, it is possible to obtain a side support mechanism which has extremely excellent operability, and can easily form a trim structure of the side support part, and can obtain a side support part with an excellent appearance.

[Brief explanation of the drawing]

Figures 1 to 4 each schematically show an embodiment of the side support mechanism according to the present invention.
The figure is a perspective view showing the frame structure of the side support mechanism, FIG. 2 is an explanatory plan view, FIGS. 3 and 4 are explanatory plan views showing different inclination states of the side support frame, and FIG. FIG. 6 is an explanatory plan view showing an example of a connecting link mechanism, and FIG. 7 is an explanatory plan view of a conventional side support mechanism. In the figure, 11... side support mechanism, 12...
Seat back, 13...Side support part, 1
5, 16...Side frame, 17, 18, 1
9, 20...Fixed bracket, 21, 22...Side support frame, 23, 24...Bending part,
26, 27...Bracket portion, 28...Intermediate frame, 29...Bending portion, 31...Inclination angle adjustment mechanism, 32...Support bracket, 33...Through hole,
34... Support rod, 35... Screw hole, 37... Rotating shaft, 38... Insertion hole, 41... Operating shaft, 42...
Threaded portion, 43...operation knob, 45...connection link mechanism.

Claims (1)

[Scope of utility model registration request] A pair of fixed brackets are fixed to the side frames of the seat at appropriate intervals, bent portions at both ends of the side support frame are rotatably supported on the pair of fixed brackets, and the inclination angle of the side support frame is adjusted. In the side support mechanism adjusted by a mechanism, the inclination angle adjustment mechanism includes a U-shaped support bracket fixed to the side support frame, a support rod pivoted to the support bracket, and a support rod pivoted to the fixed bracket. The operating shaft has a supported rotating shaft, an insertion hole is formed in the supporting bracket and the rotating shaft, a threaded hole is formed in the supporting rod, and the tip of the operating shaft having a threaded portion near the center is connected to the supporting bracket. It is inserted through the insertion hole, the threaded part is screwed into the screw hole of the support rod, the tip is inserted into the insertion hole of the rotation shaft, and the rotation of the operation shaft causes the support rod to move in the axial direction of the operation shaft. A side support mechanism characterized in that it is possible.