Patent US3901100A successfully refreshed from Google Patents.
US3901100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjusting device for the reclining seat of automotive vehicles
Assignee: Toyota Motor Corp
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Filing: 1973-07-11
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Granted: 1975-08-26
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Expires: 1993-07-11
Abstract
Abstract A reclining seat adjuster embodied by the present invention, with which the seat back of the front seat can be prevented from being flung forwardly by the engagement between a tooth portion of a ratchet member and a pawl of an engagement piece even when an occupant on the rear seat might collide with the seat back of the front seat as in case of accident. The forward flinging of the seat back can be prevented by a first holding mechanism and a second holding mechanism even when the aforementioned meshing in the reclining adjuster is lost due to an extensive shock. The first holding mechanism is constituted with a stop face formed on the ratchet and a stop face of the pawl or engagement piece. The second holding mechanism is intended to function when the pawl of the engagement piece has been broken. It comprises the stop face of the above mentioned ratchet member and a block mounted on a lower bracket.
Inventors
- 👤 Teiji Iida
- 👤 Masahide Hisayama
- 👤 Hisashi Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:48
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/22; B60N2/235; B60N2/2352; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20648; Y10T74/20654
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
245 words
An adjusting device for the reclining seat of automotive vehicles comprising: a lower bracket slidably mounted on a lower seat track member secured to the vehicle frame, a upper bracket pivotably mounted on a pin extending from said lower bracket, said upper bracket being spring biased such that it tends to become upright; a ratchet member on said upper bracket, said ratchet member having a sector-shaped downwardly facing ratchet tooth portion and a radially raised shoulder portion adjacent one end of said ratchet tooth portion; an engagement piece pivotally connected to said lower bracket, a portion of said engagement piece comprising: a toothed portion to be meshed with said ratchet tooth portion, a forward stop face adapted to abut said shoulder portion of said ratchet member when said upper bracket is biased forward by an impact force beyond the capacity of the ratchet teeth to hold, and a rear face; control means for selectively moving the toothed portion of said engagement piece into meshing engagement with the ratchet tooth portion of said ratchet member on said upper bracket whereby said upper bracket can be adjusted in inclination relative to said lower bracket; and a block on said lower bracket, said block having a front face whereby when an impact force is excessively great so that the portion of saId engaging piece is separated from the remainder, the portion is clamped between the shoulder portion of the ratchet member and the front face of the block.
Claim 2
Dependent Claim
245 words
An adjusting device for the reclining seat of automotive vehicles comprising: a lower bracket slidably mounted on a lower seat track member secured to the vehicle frame, a upper bracket pivotably mounted on a pin extending from said lower bracket, said upper bracket being spring biased such that it tends to become upright; a ratchet member on said upper bracket, said ratchet member having a sector-shaped downwardly facing ratchet tooth portion and a radially raised shoulder portion adjacent one end of said ratchet tooth portion; an engagement piece pivotally connected to said lower bracket, a portion of said engagement piece comprising: a toothed portion to be meshed with said ratchet tooth portion, a forward stop face adapted to abut said shoulder portion of said ratchet member when said upper bracket is biased forward by an impact force beyond the capacity of the ratchet teeth to hold, and a rear face; control means for selectively moving the toothed portion of said engagement piece into meshing engagement with the ratchet tooth portion of said ratchet member on said upper bracket whereby said upper bracket can be adjusted in inclination relative to said lower bracket; and a block on said lower bracket, said block having a front face whereby when an impact force is excessively great so that the portion of saId engaging piece is separated from the remainder, the portion is clamped between the shoulder portion of the ratchet member and the front face of the block.
Claim 3
Dependent Claim
45 words
An adjusting device as claimed in claim 1, wherein: said block is positioned with a portion of its front face closely adjacent the periphery of the ratchet tooth portion within an arc defined by the movement of the radially outermost tip of the shoulder portion.
Claim 4
Dependent Claim
18 words
An adjusting device as claimed in claim 1, wherein: said block is rigidly connected to said lower bracket.
Claim 5
Dependent Claim
78 words
An adjusting device as claimed in claim 3, wherein: said control means comprises: a first link pivotally connected to said engagement piece, a second link pivotally connected to said first link and said lower bracket, a pin pivotally connecting said first link and said second link, a roller on said pin, and a control rod connected to said second link, and said engagement piece has a lower edge defining a cam face along which the roller may move.
Claim 6
Dependent Claim
18 words
An adjusting device as claimed in claim 1, wherein: said block is pivotally connected to said lower bracket.
Claim 7
Dependent Claim
47 words
An adjusting device as claimed in claim 5, wherein: said control means comprises: a sub-plate pivotally connected to said lower bracket, an operating lever pivotally connected to said lower bracket, and a release lever pivotally connected to said block and connected to an end of said sub-plate.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |