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Seat slide device
| Details |
Inventors: Nishino, Takaichi;
Assignee: Tachi-S Co. (Tokyo, JP)
Primary Examiner: Song; Robert R.
Assistant Examiner:
Attorney, Agent or Firm: Oldham & Oldham Co.
A seat slide device for adjusting the forward and backward positions of the seat which comprises an upper rail and a lower rail, the upper rail being slidably fitted to the lower rail, in which a seat belt is at its one end secured to one of the upper rail and seat. In one of the upper and lower rails, formed are a plurality of projected pieces, while in the other of those rails, formed are a plurality of incised portions, so that, when an upward pulling force is exerted upon the upper rail via the seat belt, the projected pieces are pressed against the incised portions to bend them and pass therethrough, thereby causing a mutual direct engagement of the upper and lower rails to prevent removal of the upper rail from the lower rail. |
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DETAILED DESCRIPTION It is a purpose of the present invention to provide an improved seat slide device comprising slidably assembled upper and lower rails, which is effectively reinforced its rigidity without need for a large-sized and weight-increased design thereof, and further prevents removal of the upper rail from the lower rail when a great upward force is applied thereto.
With a view to attaining this purpose, the present invention includes a plurality of projected pieces formed in one of the upper and lower rails such that the projected pieces are arranged in a mutually spaced-apart relationship along the bent ends of such one of the upper and lower rails, and includes a plurality of bendable incised portions formed in the other of the upper and lower rails in likewise spaced-apart manner so that each of the incised portions is located opposite to the respective projected pieces and connected via a connecting portion to the body of such the other of the upper and lower rails.
This structure, therefore, allows the incised portions to be easily bended when the projected pieces are caused to press thereagainst in such a manner as if the projected pieces passed through the openings defined by the thus-bended incised portions.
In one aspect of the present invention, there is formed a recessed portion in the end of each of the projected pieces in order that the recessed portion is to receive each end edge of the incised portions when the projected pieces press against the incised portions, bending the same.
Accordingly, due to the engagement between the recessed portions of the projected pieces and the end edges of the incised portions, the projected pieces are thereby prevented against their deformation and thus against their removal from the incised portions.
Further, such structure adds to reinforcement of the upper and lower rails: The greater pulled is the upper rail, the more firmly engaged together are the the projected peices and incised portions, hence reinforcing more and more the structure of those rails, so sufficiently as to resist a high load applied when a collision accident or the like occurs
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