JPH0716367Y2 - Vehicle seat support device - Google Patents

Description

[Detailed description of the device] "Industrial application field" This device is intended to stabilize the posture of a seated person by providing a support device for a vehicle seat, such as a side support or a lumbar support provided in a seat back. It is about improvement.

"Prior Art" Such a support device has a rotation direction adjusting rod that pivotally supports an operating shaft and a driven shaft vertically facing a frame of a back seat and rotates the driven shaft in a reverse direction with respect to the operating shaft. The support is configured to move and adjust by connecting both shafts and rotating the operating shaft.

The working shaft is rotated by rotating the operating shaft, and the operating shaft and the driven shaft are rotated in opposite directions to open and close a pair of opposing supports in the side support device, respectively, and in the lumbar support device. Move the lumbar support back and forth.

The method of rotating the operating shaft by the operating shaft is roughly classified into a screw mechanism in which a male screw provided on the operating shaft is screwed into a female screw member, and a method by a cam mechanism.

“Problems to be solved by the device” However, with the screw mechanism, the support cannot be moved to the desired position unless the lever attached to the operation shaft is rotated many times, and the operability is poor. Was there. If a gear mechanism or the like is attached to improve operability, the structure becomes complicated and the reliability of the mechanism is impaired.

The cam mechanism also has a drawback that the structure is complicated and the manufacturing cost is high.

"Means for solving the problem" Therefore, the present invention solves the above-mentioned drawbacks of the conventional method,
It is an object of the present invention to provide a vehicle support device having excellent operability and a simple structure, and has the following structure.

A guide member is attached to the operation shaft pivotally supported laterally with respect to the operation shaft.

A guided member having a portion slidably engaged with the guide member is attached to the operating shaft.

Then, at least a portion of the guided member that engages with the guide member is inclined with respect to the rotation direction of the guide member.

[Operation] Since the portion of the guided member that engages with the guide member is inclined with respect to the rotation direction of the guide member, the guided member with which the guide member engages rotates when the operation shaft is rotated. For being pushed towards the axis of the actuating shaft. As a result, the operating shaft rotates.

Therefore, since the driven shaft also rotates in the opposite direction to the operating shaft, the support moves.

[Examples] Hereinafter, the present invention will be described in detail with reference to the drawings.

First, the side support device shown in FIG. 1 will be described.

Reference numeral 1 is a seat back frame, and 2 is a bracket fixed to the frame 1.

An operation shaft 3 is pivotally supported in the lateral direction on the bracket 2 and is rotatable by a lever 4.

Reference numeral 5a is an operating shaft vertically supported by the bracket 2, and a driven shaft 5b is vertically supported by the bracket 6 fixed to the frame 1 at a position facing the operating shaft 5a. Both shafts 5a, 5b
Are connected by a rotation direction adjusting rod 7 and are rotated in opposite directions. A pair of side supports 8a and 8b are fixed to the shafts 5a and 5b, respectively.

Reference numeral 9 is a guided member formed in a U-shape or a semicircle, and the upper base is fixed to the inside of the operating shaft 5a and the lower base is fixed to the outside. Therefore, this guided member 9
Has a plane including the central axis inclined with respect to the axis of the operating shaft 5a.

Reference numeral 10 denotes an inverted U-shaped guide member, which is fixed to the operation shaft 3 and on which the guided member 9 is slidably engaged.

Therefore, in the case of the illustrated embodiment, when the lever 4 is rotated clockwise, the guide member 10 rotating together with the operation shaft 3 rotates in a state of being engaged with the guided member 9. Therefore, the guided member 9 is pushed toward the axis of the operating shaft 5a,
The operating shaft 5a rotates clockwise. Therefore, the side support 8a on the operating shaft side opens to the outside of the seat, and the driven shaft 5b connected to the operating shaft 5a through the rotation direction adjusting rod 7 rotates counterclockwise, and the side support 8b also opens to the outside of the seat. .

Here, the guided member 9 only needs to rotate the operating shaft 5a by the rotation of the guide member with which it engages, and its shape is not limited to that of the embodiment, and may be, for example, a plate shape. In short, at least the portion that engages with the guide member 10 and rotates the actuating shaft 5a is inclined with respect to the rotation direction of the guide member 10 as shown in FIG. Good.

Similarly, the shape of the guide member 10 is not limited to that of the embodiment, and may be formed in, for example, a U shape or a semi-ring shape, or two short shafts may be planted on the operation shaft 3. .

Next, an embodiment of the lumbar support device shown in FIG. 3 will be described.

1 is a frame, 22 is a bracket, 23 is an operating shaft, and 24 is a lever. Further, 25a is an operating shaft vertically supported by the bracket 22, 25b is a driven shaft vertically supported by the bracket 26, and both shafts 25a, 25b are connected by a rotation direction adjusting rod 27. 28 is lumbar support.

29 is a member to be guided, which is fixed to the operating shaft 25a with the upper base portion on the outside and the lower base portion on the inside, unlike the above embodiment. Reference numeral 30 is a guide member fixed to the operation shaft 23.

Therefore, when the lever 24 is rotated counterclockwise, the guided member 29 rotates clockwise and the operating shaft 25a also rotates clockwise. At the same time, the driven shaft 25b connected to the operating shaft 25a by the rotation direction adjusting rod 27 rotates counterclockwise, so that the lumbar support 28 moves forward.

Although not shown, the operation shaft 3 of the side support device is used as a pipe shaft, and the operation shaft 23 of the lumbar support device is coaxially attached to the pipe shaft. Both brackets 2 and 22 are overlapped and integrated, and the bracket 2 operates on the side support side. axis
Attach 5a to bracket 22 and actuating shaft 25b. And
It is also possible to use the brackets 6 and 26 as one common bracket and attach the driven shafts 5b and 25b thereto. In this case, a seat including both the side support device and the lumbar support device can be formed.

"Effect" The rotation of the operation axis is small, and the large movement of the support is obtained.
Since the cam mechanism is not used, the structure is extremely simple and highly reliable, and it can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a side support device, and FIG. 2 is an explanatory view showing a state in which a guide member and a guided member are engaged with each other. FIG. 3 is a perspective view of the lumbar support device. 1 …… Frame 2,22 …… Bracket 3,23 …… Operating axes 5a, 25a …… Operating axes 5b, 25b …… Driven axes 7,27 …… Rotation direction adjusting rods 8a, 8b …… Side supports 28 …… Lumber Support 9 ... Guided member 10 ... Guide member

Claims (1)

[Scope of utility model registration request] 1. An actuating shaft and a driven shaft are vertically supported so as to be opposed to a frame of a backseat, respectively, and both shafts are connected by a rotation direction adjusting rod that reversely rotates the driven shaft with respect to the actuating shaft. In a vehicle seat support device for moving and adjusting a support by rotating a shaft, a guide member is attached to an operation shaft pivotally supported in a lateral direction with respect to the operation shaft, and the guide member is attached to the operation shaft. A seat for a vehicle, wherein a guided member having a portion slidably engaged with the guide member is mounted, and at least a portion of the guided member engaged with the guide member is inclined with respect to a rotation direction of the guide member. Support equipment.