Installation and working method of silencer spring and locking mechanism in seat slide rail

Abstract

The invention relates to an installation and working method of a sound-absorbing spring and a locking mechanism in a seat slide rail, which is mainly suitable for the high and low slide rails of automobile seats. The installation of the silencer spring of the present invention: hang in the corner of the pressure plate and the groove of the press block, the silencer spring is initially pre-tightened; the installation of the locking mechanism: the lock pin penetrates the lock pin hole from top to bottom, and the lock spring passes through the lower end of the lock pin Put it up into the groove of the lock pin; install the shift fork, pin shaft and the reset torsion spring of the shift fork, and then put them into the upper slide rail, so that the lock pin passes through the lock spring hole and the lock spring hole of the upper slide rail from top to bottom. Lock pin guide hole; when locked: the handle shaft is inserted into the spring hole and the upper slide rail, the tail of the shift fork is just inserted between the front part of the spring and the pressure plate bushing, and the front bending point of the spring is always in contact with the shift fork groove , the shift fork is in contact with the pressure plate bushing; when unlocking: the pressure plate bush presses the shift fork, so that the tail of the shift fork is downward, the head of the shift fork is upward, and the lock pin is lifted up. The present invention has no abnormal sound, no idle stroke, and no increase in operating force.

Description

technical field [0001] The invention relates to a seat slide rail, in particular to an installation and working method of a sound-absorbing spring and a locking mechanism in the seat slide rail, which is mainly applicable to the high and low slide rails of automobile seats. Background technique [0002] U.S. Patent Application No. US007722006B2 discloses an invention patent application for a "locking device for a motor vehicle seat length adjustment mechanism with two pairs of slide rails", in which two locking structures are listed, and the closer one is Although the lock pin assembly is installed in the device, it does not have a bracket plate, and the lock spring cannot be pressed, so the upper slide rail can only be used to limit the upward movement, so the lock pin can only be made into a split structure, that is, the lock pin is divided into two parts. The flange plus the lock pin body, when installing, remove the flange, the lock spring must be placed on the upper par...

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Problems solved by technology

[0002] U.S. Patent Application No. US007722006B2 discloses an invention patent application for a "locking device for a motor vehicle seat length adjustment mechanism with two pairs of slide rails", in which two locking structures are listed, and the closer one is Although the lock pin assembly is installed in the device, it does not have a bracket plate, and the lock spring cannot be pressed, so the upper slide rail can only be used to limit the upward movement, so the lock pin can only be made into a split structure, that is, the lock pin is divided into two parts. The flange plus the lock pin body, when installing, remove the flange, the lock spring must be placed on the upper part of the lock pin from top to bottom, and be stuck at the step, and then the lock pin and the lock spring must pass through from bottom to top It is inconvenient to install the flange after going through the lock pin guide plate and the upper slide rail; when locking, because it is not equipped with a silencer spring, the handle assembly will move and make abnormal noise; at the same time, when the shift fork is in use , cannot ensure that there is no empty travel between it and the handle assembly

[0003] U.S. Patent Application No. US006231022B1 discloses a patent application for "the longitudinal slide rail of a motor vehicle seat with a locking device". The locking problem that exists in the US007722006B2 patent application also exists; moreover, other parts must be installed on the upper slide rail one by one, which is troublesome to install; in addition, because it is not provided with the silencer spring, the shift fork uses When it is used, it cannot be guaranteed that there is no empty travel between it and the handle assembly; at the same time, it cannot eliminate the unlocking empty travel that exists during the unlocking process and the increased operating force when unlocking

In addition, tension springs are used in the lock structure, which is prone to vibrato

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