JPH0415547Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a locking device for a vehicle seat, and in particular to an improvement for preventing abnormal noise from being generated from a shaft connecting left and right locking devices.

<<Prior Art>> A locking device is provided on both sides of a trunk-through type seat back, and the locking device constantly engages with a striker provided on the body side, thereby joining the seat back to the rear body panel.
It is held in the normal position.

Then, by unlocking either the left or right locking device, the seatback is unlatched from the striker, the seatback folds forward, and the trunk space is opened to the inside of the vehicle.

To enable this type of operation, the left and right locking devices are linked by a connecting shaft, and when either one is unlocked, the other side can also be unlocked via the connecting shaft.

[Problems that the invention aims to solve] However, since this connecting shaft spans the entire width of the rear seat bag, it is likely to vibrate due to the vibrations of the vehicle body, and this will hit the frame and generate abnormal noise. It was causing unpleasant noise.

This invention was made in view of the above problems, and its purpose is to provide a locking device for a vehicle seat that suppresses the generation of abnormal noise by adding a simple configuration. It is something.

<Means for Solving the Problems> In order to achieve the above object, this invention includes a pair of lock devices provided on both left and right sides of the seat back frame, and a pair of lock devices disposed between each lock device, one of the lock devices being disposed between the two lock devices. The vehicle seat is equipped with a connecting shaft that transmits the locking and unlocking operation of one lock device to the other locking device, characterized in that a band made of a sound insulating material is attached in a skewered manner along the longitudinal direction of the outer periphery of the connecting shaft.

[Function] According to the above configuration, a damping effect can be expected from the band made of sound insulating material, and even if this band hits the frame due to vibration, it is not a direct contact between metals, so no abnormal noise is generated. The occurrence of this will be completely eliminated.

<<Example>> Hereinafter, an example of this invention will be described in detail using the drawings.

Figures 1 and 2 show a rear seat bag to which this invention is applied.

The rear seat back in the figure includes a plate-shaped frame 10 formed in an outer shape according to the outer shape of the seat back, a back pad 12 attached to the front surface of the frame 10, and a back pad 12 attached to the front surface of the frame 10.
The end portion of the skin 14 is fixed to a mounting portion 10a formed on the back surface of the frame 10 via an ohm clip 16, thereby assembling the three parts together. There is.

A pair of locking devices 18 are fixedly arranged on both sides of the front side of the back frame 10, and lock levers 20 of the locking devices 18 are projected from the upper part of the frame, penetrate through the pads, and are positioned to protrude from both side shoulders of the seat back.

The lock lever 20 is always biased into the lock-on state by the spring pressure of a spring (not shown), and a latch portion, which is rotationally biased in conjunction with this, is provided on the body side (not shown) that protrudes oppositely from the rear surface of the back frame 10. It is connected to the striker. Then, by pulling the lock lever 20 upward, the latch portion is unlatched from the striker and becomes unlocked.

The rotation center axes of each of the latch parts are connected by a single connecting shaft 22, so that when one lock lever 20 is pulled up, the other lock device 18 is interlocked so that both lock devices 18 can be locked and unlocked at the same time. It's getting old.

The connecting shaft 22 is made of a hollow pipe and is a member that easily resonates with external vibrations, and since it is disposed over almost the entire width of the seat back, it has a strong tendency to resonate.

Further, a band 24 made of a sound insulating material is skewered and fixed to the outer periphery of the connecting shaft 22 along its longitudinal direction.

This band 24 is obtained by trimming and cutting a damping material made of waste material such as a floor carpet to an appropriate width dimension, and has a pair of insertion holes 24a formed at each end and in the center. It is inserted into the connecting shaft 22 with its surface facing the back frame 10 side.

In the above configuration, the connection shaft 22 resonates due to vehicle body vibration, and when it vibrates, it hits the front surface of the back frame 10, but the vibration damping effect of the band 24 reduces the amplitude, and the part that hits the frame 10 Because of the band 24, direct metal-to-metal contact is avoided and no abnormal noise is generated.

Although the band 24 is attached in a skewered manner at the center and both sides thereof, it goes without saying that the number of insertion points may be increased depending on the vibration mode of the connecting shaft 22.

<<Effects of the invention>> As explained in detail using the embodiments above, in the vehicle seat locking device according to this invention, a band made of sound insulating material is skewered along the longitudinal direction of the outer periphery of the connecting shaft. Direct contact between the shaft and frame can be avoided by simply attaching it to the frame, and abnormal noise caused by metal-to-metal contact can be suppressed. Further, according to this invention, a sound insulation effect can be easily obtained by using waste materials, so that abnormal noise prevention can be achieved at low cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a rear seat back frame equipped with a locking device according to the invention, and FIG. 2 is a sectional view of essential parts showing the rear seat back in a completed state. DESCRIPTION OF SYMBOLS 10... Seat back frame, 18... Lock device, 22... Connection shaft, 24... Band.

Claims (1)

[Scope of utility model registration request] A vehicle seat comprising a pair of locking devices provided on both left and right sides of a seat back frame, and a connecting shaft disposed between each locking device and transmitting a locking/unlocking operation of one locking device to the other locking device, A locking device for a vehicle seat, characterized in that a band made of a sound insulating material is attached in a skewered manner along the longitudinal direction of the outer periphery of the connecting shaft.