Slide rail device for seat
First Claim
1. A slide rail device for a seat, of such a type mounted laterally of a seat cushion frame which forms a part of said seat, comprising:
- a lower rail means to be fixed to a floor, said lower rail means including an upper guide groove and a lower guide groove;
an upper rail means to be fixed to a lateral side of said seat cushion frame, said upper rail means being slidably assembled with said lower rail means such as to be slidable along said lower rail means;
said upper rail means including an upper guide means and a lower guide means which are respectively slidably fitted in said upper and lower guide grooves of said lower rail means via slider means;
a seat belt anchor means disposed between said upper rail means and said seat cushion frame; and
at least two engagement means which are so arranged between said upper and lower rail means that each of said at least two engagement means to effect an engagement action responsive to an inwardly slant upward force being applied through said seat belt anchor means to said upper rail means in a slant direction inwardly of the seat, whereby said engagement action disperses a stress produced by said inward slant upward force in said upper and lower guide means of said upper rail means, said at least two engagement means including;
(a) a first engagement means disposed at a point laterally away from said seat frame, said first engagement means being to effect an engagement action in response to at least one of an upward component force and an inward component force composed by said inwardly slant upward force; and
(b) a second engagement means disposed at a point laterally toward said seat frame and away from said first engagement means said second engagement means being to effect an engagement action only in response to said upward component force.
1 Assignment
0 Petitions
Accused Products
Abstract
A slide rail device for a seat, of the type mounted laterally of a seat cushion frame, which comprises an upper rail member fixed to the lateral side of the seat cushion frame, a lower rail member fixed to a floor, a seat belt anchor provided between the upper and lower rail members, and an engagement element. When a great degree of inwardly slant upward pulling force is applied via the seat belt anchor to the upper rail member, the engagement element effects an engagement action in response to at least one of upward and inward component forces composed by such inwardly slant upward pulling force, so that an intensive stress produced between the upper and lower rail members may be dispersed to the engagement element. Further, the upper and lower rail members are formed from a lightweight material with a reinforcing element to have a lightweight yet robust structure.
35 Citations
10 Claims
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1. A slide rail device for a seat, of such a type mounted laterally of a seat cushion frame which forms a part of said seat, comprising:
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a lower rail means to be fixed to a floor, said lower rail means including an upper guide groove and a lower guide groove; an upper rail means to be fixed to a lateral side of said seat cushion frame, said upper rail means being slidably assembled with said lower rail means such as to be slidable along said lower rail means; said upper rail means including an upper guide means and a lower guide means which are respectively slidably fitted in said upper and lower guide grooves of said lower rail means via slider means; a seat belt anchor means disposed between said upper rail means and said seat cushion frame; and at least two engagement means which are so arranged between said upper and lower rail means that each of said at least two engagement means to effect an engagement action responsive to an inwardly slant upward force being applied through said seat belt anchor means to said upper rail means in a slant direction inwardly of the seat, whereby said engagement action disperses a stress produced by said inward slant upward force in said upper and lower guide means of said upper rail means, said at least two engagement means including; (a) a first engagement means disposed at a point laterally away from said seat frame, said first engagement means being to effect an engagement action in response to at least one of an upward component force and an inward component force composed by said inwardly slant upward force; and (b) a second engagement means disposed at a point laterally toward said seat frame and away from said first engagement means said second engagement means being to effect an engagement action only in response to said upward component force. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A side rail device for a seat, of such a type mounted laterally of a seat cushion frame which forms a part of said seat, comprising
a lower rail means formed from a lightweight material, said lower rail means to be fixed to a floor and including an upper guide groove and a lower guide groove; -
an upper rail means formed from a lightweight material, said upper rail means to be fixed to a lateral side of said seat cushion frame and being slidably assembled with said lower rail means such as to be slidable along said lower rail means; said upper rail means including an upper guide means and a lower guide means which are respectively slidably fitted in said upper and lower guide grooves of said lower rail means via slider means; a seat belt anchor means disposed between said upper rail means and said seat cushion frame; at least two engagement means which are so arranged integrally between said upper and lower rail means that each of said at least two engagement means effect an engagement action responsive to an inwardly slant upward force being applied through said seat belt anchor means to said upper rail means in a slant direction inwardly of the seat, whereby said engagement action disperses a stress produced by said inward slant upward force in said upper and lower guide means of said upper rail means, said at least two engagement means including; (a) a first engagement means disposed at a point laterally away from said seat frame, said first engagement means being to effect an engagement action in response to at least one of an upward component force and an inward component force composed by said inwardly slant upward force; and (b) a second engagement means disposed at a point laterally toward said seat frame and from said first engagement means said second engagement means being to effect an engagement action only in response to said upward component force, a reinforcing means which is provided at a point where said upper rail means is fixed via said seat belt anchor to the lateral side of said cushion frame and also provided at a base portion of said lower rail mans fixed to said floor. - View Dependent Claims (8, 9, 10)
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Specification