JPS5925706Y2 - reclining adjuster - Google Patents

Description

[Detailed description of the invention] The present invention relates to a reclining adjuster suitable for a reclining seat, especially a rear reclining seat, and an object of the present invention is to obtain a reclining adjuster that is lightweight without reducing the performance and required strength of the reclining mechanism. With the goal.

In the conventional reclining seat, a reclining device 35 is provided at a hinge portion 36 that engages the seat back 1 and the seat cushion 2, as shown in FIG. In order to support all of the rotational moment by the hinge part 36,
Sea I back 1 frame, reclining device 35
Both had to be very strong and durable to withstand this cantilevered support, thus adding considerable weight.

By providing the reclining mechanism near the load application point at the upper rear end of the seatback, the present invention does not reduce the performance of the reclining mechanism in the slightest.
Moreover, since a mechanism similar to simple support can be used instead of cantilever support, the strength of the seat back frame and reclining mechanism can be significantly reduced for the same seating load, resulting in weight and cost reductions. This is a reclining mechanism that is particularly effective for seats that do not require large angle adjustments, such as the rear seats of passenger cars.

FIG. 1 shows the mounting position relationship of the adjuster 5, in which the seat back 1 near the lower end is pivoted to the body 3 near the rear end of the seat cushion 2 by a simple hinge 4 so as to be rotatable in the front and back direction. By means of an adjuster 5 fixed to a rear body 3 facing near the top of the seat back 1, the seat back 1 can be reclined to position 1 shown by a solid line or position 1' shown by a chain line. The adjuster 5 changes the rotational position of the support arm 6 and the auxiliary arm 7 attached to the body 3 via the bracket 10.11 by operating the handle 9, and is engaged with the support arm 6 and the auxiliary arm 7. The configuration is such that the angle of the seat back 1 is changed by changing the position of the horizontal seat back beam 8, which is the back surface member of the seat back 1.

FIG. 2 shows a detailed configuration of the adjuster of the embodiment shown in FIG.
A support arm 6 and an auxiliary arm 7 are fixedly installed apart from each other in the vehicle width direction, and the torque puller 12 is biased by a torsion spring 13 in the direction of arrow R, that is, in the direction of raising the seat back toward the front of the vehicle body. .

In the illustrated example, both ends of the torsion spring 13 are
An operation frame is attached to the mounting surface 37 of the bracket 10 via a pin 19, which is respectively locked to the bracket 10 and the support arm 6 and is biased to rotate the support arm 6 in the direction of arrow R. A handle 9 is rotatably supported in a plane substantially parallel to the mounting surface 37, and a lock arm 18 extends from the other end of the handle 9.
A fork 21 serving as a retaining portion is formed at the upper free end of the support arm 6 so as to support the seat back beam 8 in a pinched manner, and teeth 15, 15 having notches 16 and 16 are formed near the lower end. is formed.

A groove 17 into which the tip of the lock arm 18 is rotatably inserted is bored in the vertical surface 38 of the bracket 10, which is formed at right angles to the mounting surface 37.

The handle 9 is biased by a torsion spring 20 surrounding the pin 19 to rotate in the direction opposite to arrow B, that is, counterclockwise.
is inserted into the notch 16 and groove 17 of the support arm 6, and locks the rotation of the handle 9 and the support arm 6.

A fork 22, which is a holding portion capable of holding the seat back beam 8, is formed at the tip of the auxiliary arm 7, which is fixed to the torque par 12 near the bracket 11 at a position spaced apart from the support arm 6 in the vehicle width direction. has been done.

To lock the lever 12 to the brackets 10 and 11,
This is usually done with an elastic catch 14.

The adjuster 5 of this embodiment is mainly used for narrow individual seats, etc., and the beam 8 provided near the upper end of the frame of the seat back 1 toward the rear side is connected to the fork at the tip of the support arm 6 and the auxiliary arm 7. 21.22
It is attached to the body 3 located on the rear side of the seat back 1 at a position where it is clamped by the seat back 1.

This mounting position is selected so that it is near the point of application of the back pressure load by the seated person, regardless of the size of the seated person.

Next, the operation of the present invention will be explained.

When the handle 9 is rotated in the direction of arrow B as shown in FIG.
As shown in the figure, when the force p is not applied to the seat back 1, the torque puller 12, and therefore the support arm 6 and the auxiliary arm 7, rotate in the direction of arrow R due to the elasticity of the torsion spring 13, and the seat back 1 is rotated. Rotate around the hinge 4 in FIG. 1 to a more upright position.

At this time, when the handle 9 is rotated in the direction of the arrow B while applying force to the seats 1 to 1, the arms 6 and 7, which are no longer engaged with the lock arm 18, are rotated in the direction of the arrow Q.

When you remove your hand from the handle 9 at the appropriate rotation angle position, the handle 9 moves in the direction of arrow B due to the elasticity of the torsion spring 20.
, the locking arm 18 is inserted into a suitable notch 16 different from the front, and the support arm 6 is fixed in the new position, so that the seat back beam engages with the support arm 6 and the auxiliary arm 7. 8, the seat back 1 is fixed at a new position, for example, from position 1 to position 1' in FIG. 1, with the reclining angle changed.

There is no need to specify the teachings based on material mechanics, but in the seat lining mechanism of this embodiment, the rearward load due to the back pressure of the seated person and the weight of the seat back 1 are supported by the support arm 6, the auxiliary arm 7, and the hinge 4. and 2
Since it is a simple support at a point, it only needs to have enough strength to share and support the support load at the support point.In particular, the structure of the hinge 4 is different from conventional ones, and is simple and does not require cantilever support. Since a hinge structure is sufficient and the required strength is drastically reduced, its simplification and weight reduction can be easily achieved.

In addition, support arm 6, auxiliary arm 7 and torque par 1
The torsional and bending strength in 2 is sufficient to bear a portion of the load p shared with the hinge 4 out of the rearward load p due to the back pressure of the seated person, and the Since it is engaged with the arm 18 and the groove 17, the required strength is further reduced, and the required strength is reduced due to the reduction in the required rigidity of the seat back frame with a simple support beam.
Light weight can be easily achieved.

The adjuster 5' of the second embodiment shown in FIG.
It has a configuration that is more suitable as a reclining mechanism for a wide seat such as a seat for two or three people, and instead of the bracket 11 in FIG. 2, a bracket 10, a support arm 6, a lock arm and a A bracket 10', a support arm 6', a lock arm 18, etc., each having a shape substantially symmetrical to that of the support arm 18, are provided.

In other words, the support arm 6' fixed to the torque par 12' has the same shape as the support arm 6, has teeth 15', and a notch of 1.
6' and a fork 21' are provided, and the bracket 10'
has a shape substantially symmetrical to that of the bracket 10, and is provided with a groove 17', and a lock lever 24 having a lock arm 18' is rotatably mounted via a pin 19'.
8' is normally biased by a torsion spring 20' in the direction of engagement with the groove 17' and the notch 16'.

The bundle 9', which is rotatably engaged with the bracket 10 by a pin 19, has a connecting tongue 23 extending from the lower end of the bundle 9 in the embodiment described above, and both the connecting tongue 23 and the lock lever 24 are connected to each other. A connecting wire 25 is stretched around the tip and engages the connecting tongue 23 and the lock lever 24.

Next, talking about the action of this adjuster 5', when the bundle 9' is rotated in the direction of arrow B as in the previous embodiment, the lock arm 18 and support arm 6 are disengaged, and at the same time, The lock lever 24 is prevented from rotating in the direction of arrow E by the connecting wire 25, and the lock arm 18' is prevented from rotating in the direction of arrow F, resulting in the notch 16'.
The support arm 6' is disengaged from the support arm 6'.

Therefore, the support arm 6.6' is in the direction of arrow R.
l--Rotated by the elasticity of the John spring 13.

In this state, the seat back can rotate in the direction of arrow Q or R depending on the presence or absence of a load on the seat back.
If the bundle 9' is released at an appropriate reclining angle of the seat back, the seat back is fixed at that angle.

In the third embodiment shown by the two-dot chain line in FIG. 3, a suspension is used for a rear seat with an armrest, and instead of the bundle 9' of the second embodiment, an adjustment lever is placed at a separate position as an operating lever. A lever 27 is provided.

The adjustment lever 27 is rotatably attached to the lever bracket 26 via a pin 29, and the lever bracket 26 is attached to an appropriate position on the body 3 or the like, for example, at a storage position of the center armrest 34 as shown in FIG. .

A connecting tongue 2 is attached to the opposite end of the adjusting lever 27 from the pin 29.
8 is extended, and a connecting wire 30 is stretched between it and the tip of a lock lever 31 that replaces the bundle 9'.

If you want to change the angle of the lining, rotate the adjustment lever 27 in the direction of arrow G and the connecting wire 3
0, the lock lever 31 is rotated in the direction of arrow B, and the adjuster 5' is operated by the same process as in the second embodiment.

The auxiliary arm 7 is provided spaced apart from the support arm 6,6' in the vehicle width direction as required.

In the reclining mechanism of this embodiment, the adjuster 5' can be operated depending on the seated posture, and the adjuster lever 27 can be installed not only at the storage position of the center armrest 34 but also at a position that is easy for the seated person to operate. can.

In each of the above embodiments, a torsion spring is used as the biasing body for the torque puller and the lock arm, but the biasing body is not limited to a torsion spring, and may be a torsionally elastic body such as a torsion bar or a rubber-like elastic body. Of course, various elastic bodies may be used, such as a tension or compression elastic body such as a body, a leaf spring, a coil spring, etc., or a gas elastic body such as an air spring.

In addition, instead of a short back upright biasing body consisting of a torsion bar, an elastic body, a support arm, etc., the body is always biased in a direction to separate the back surface of the seatback from the body near the point where the seatback's load is applied by the seated person. An elastic body may be provided.

Since the present invention has the configuration described in the claims of the utility model registration, by providing the reclining mechanism near the point of application of the sitting load on the upper part of the seat back, the performance as a reclining mechanism is slightly reduced. Moreover, it is possible to create a mechanism that is close to simple support, and for the same seating load, the strength of the seat back frame and reclining mechanism can be significantly reduced, making it possible to reduce their weight and cost. This is an excellent idea that has achieved various effects.

[Brief explanation of the drawing]

Fig. 1 is a side view of the reclining seat showing the installed state of the embodiment, Fig. 2 is a perspective view of the embodiment, Fig. 3 is a perspective view of another embodiment, and Fig. 4 is the mounted state of the same embodiment. FIG. 5 is a perspective view of a conventional reclining seat. 1.1' rainbow pack, 2: seat cushion, 3:
Body, 4: Hinge, 6, 6': Support arm, 7:
Auxiliary arm, 8,8' rainbow pack beam, 12°1
2': h Lukbar, 13 Ni-John Spring, 16
゜16': Depth of cut, 18.18': Lock arm, 2
0.20': l--John Spring, 21.21
', 22: Fork.

Claims (1)

[Scope of utility model registration request] A seat cushion, a seat back whose lower end is pivotally supported on the vehicle body near the rear end of the seat cushion, and whose upper end can move back and forth relative to the vehicle body, and a seat back which is disposed on the vehicle body near the upper end of the seat cushion and is permanently locked. a support arm having at least two plurality of notches that can be engaged with the lock arm, and a retaining portion that engages with the back member of the seat back near the free end; an auxiliary arm that is provided apart from the support arm in the vehicle width direction and has a holding portion near the free end that engages with the back surface member of the seat back; a torque bar fixedly spaced apart from the vehicle body and rotatably supported on the vehicle body; and a spring that biases the free ends of the support arm and the auxiliary arm toward the front of the vehicle body with the torque bar as a rotation center. A reclining adjuster characterized by comprising: