Headrest moving device

Abstract

Disclosed is a headrest moving device. The headrest moving device includes: a cover including a front wall and a rear wall a middle cover disposed inside the cover and formed with a hollow portion; a locking cover inserted into the hollow portion, connected to the cover, and formed with teeth along a forward / backward direction thereof; a lock pin plate installed on the middle cover to be slidable in a leftward / rightward direction and provided with a lock pin inserted into the teeth; a lock plate formed with through-holes through which vertical portions of a stay rod pass, the lock plate being installed on the middle cover to be slidable in the leftward / rightward direction and being connected to the lock pin plate; a return spring configured to return the lock plate or the lock pin plate; and a button configured to move the lock plate in the leftward / rightward direction. The cover is formed in an integrated body so that the spacing between the front wall and the rear wall may be maintained constantly.

Description

technical field [0001] The present invention relates to a headrest moving device, and more particularly, to a headrest moving device in which the forward / backward direction position and the upward / backward The position in the downward direction, the interval between the front wall and the rear wall is kept constant so that the gaps and gaps of the device are minimized, and the device is simple in structure so that assemblability can be improved and manufacturing cost can be reduced. Background technique [0002] US Patent Nos. 6,302,485, 7,322,646, 7,669,932 and 7,758,126 disclose a head restraint that folds when a single button is pressed. The problem with US Patent Nos. 6,302,485, 7,322,646, 7,669,932 and 7,758,126 is that the buttons for folding the headrest cannot be used to adjust the vertical height of the headrest. [0003] US Patent Nos. 6,880,890 and 6,910,740 disclose a headrest that, when a button is pressed, rotates the headrest to adjust the inclination of the ...

AI Technical Summary

Problems solved by technology

The problem with U.S. Patent Nos. 6,302,485, 7,322,646, 7,669,932 and 7,758,126 is that the buttons for folding the headrest cannot be used to adjust the vertical height of the headrest

The problem with US Patent Nos. 6,880,890 and 6,910,740 is that the buttons for adjusting the forward / backward angle cannot be used to adjust the vertical height of the headrest

The problem with U.S. Patent Nos. 6,068,337, 7,306,287, 7,621,598 and 5,711,579 and U.S. Publication No. 2011-0148171 is that the position of the headrest in the forward / backward direction cannot be adjusted by the vertical height adjustment button

The problem with U.S. Patent No. 4,265,482 is that the vertical height of the headrest cannot be adjusted via the forward / rearward position adjustment buttons

U.S. Patent Laid-Open Application Publication No. 2012-80926 has problems of poor assemblability due to the complexity of the internal structure of the headrest and an increase in the price of the product

[0009] However, the headrest of Korean Patent Application No. 2011-0089135 has the following problems: the front cover is installed to be able to move forward / backward with respect to the rear cover to create a gap in the device, and the structure is complicated by using a connecting structure change, deterioration of assembly performance, and increase in product price

As a result, the weight of the device increases and the fastening force is poor

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