Latch with spring for bell crank lever
First Claim
1. A latch, comprising:
- a fork bolt movably mounted to the latch for movement between an open position and a closed position;
a detent lever movably mounted to the latch for movement between a latched position and a released position, wherein the detent lever prevents the fork bolt from moving from the closed position to the open position when the detent lever is in the latched position;
a bell crank lever movably mounted to the latch for movement between a first position and a second position, wherein the bell crank lever moves the detent lever from the latched position to the released position as the bell crank lever moves from the first position to the second position;
a worm gear having a plurality of gears meshingly engaged with a plurality of gears of the bell crank lever; and
an over center spring directly secured to the bell crank lever at one end and a portion of a housing of the latch at another end, wherein the over center spring provides a biasing force to the bell crank lever in a first direction creating a rotational force towards the first position when the bell crank lever is in the first position and the over center spring provides a biasing force to the bell crank lever in a second direction creating a rotational force towards the second position when the bell crank lever is in the second position, wherein the over center spring holds the bell crank lever in place in order to prevent it from bouncing around as it moves between its corresponding first and second positions and wherein the over center spring returns the bell crank lever to the first position, which is different from a position of the bell crank lever if the bell crank lever was only directly driven by the detent lever, wherein the biasing force of the over center spring in the second direction is applied below an axis of rotation of the bell crank lever.
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Accused Products
Abstract
A latch having: a fork bolt; a detent lever; and a bell crank lever, wherein the bell crank lever moves the detent lever from a latched position to a released position as the bell crank lever moves from a first position to a second position; and an over center spring secured to the bell crank lever at one end and a portion of a housing of the latch at another end, wherein the over center spring is configured to provide a biasing force to the bell crank lever in a first direction towards first position when the bell crank lever is in the first position and the over center spring is configured to provide a biasing force to the bell crank lever in a second direction towards the second position when the bell crank lever is in the second position.
69 Citations
17 Claims
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1. A latch, comprising:
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a fork bolt movably mounted to the latch for movement between an open position and a closed position; a detent lever movably mounted to the latch for movement between a latched position and a released position, wherein the detent lever prevents the fork bolt from moving from the closed position to the open position when the detent lever is in the latched position; a bell crank lever movably mounted to the latch for movement between a first position and a second position, wherein the bell crank lever moves the detent lever from the latched position to the released position as the bell crank lever moves from the first position to the second position; a worm gear having a plurality of gears meshingly engaged with a plurality of gears of the bell crank lever; and an over center spring directly secured to the bell crank lever at one end and a portion of a housing of the latch at another end, wherein the over center spring provides a biasing force to the bell crank lever in a first direction creating a rotational force towards the first position when the bell crank lever is in the first position and the over center spring provides a biasing force to the bell crank lever in a second direction creating a rotational force towards the second position when the bell crank lever is in the second position, wherein the over center spring holds the bell crank lever in place in order to prevent it from bouncing around as it moves between its corresponding first and second positions and wherein the over center spring returns the bell crank lever to the first position, which is different from a position of the bell crank lever if the bell crank lever was only directly driven by the detent lever, wherein the biasing force of the over center spring in the second direction is applied below an axis of rotation of the bell crank lever. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of disengaging a detent lever from engagement with a fork bolt a latch, comprising:
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pivotally mounting a fork bolt to the latch for movement between an open position and a closed position; pivotally mounting the detent lever to the latch for movement between a latched position and a released position, wherein the detent lever engages the fork bolt and prevents the fork bolt from moving from the closed position to the open position when the detent lever is in the latched position; movably mounting a bell crank lever to the latch for movement between a first position and a second position, wherein the bell crank lever is configured to engage and move the detent lever from the latched position to the released position as it moves from the first position to the second position; meshingly engaging a plurality of gears of the bell crank lever with a plurality of gears of a worm gear; biasing the bell crank lever in a first direction to create a rotational force towards the first position when the bell crank lever is in the first position with an over center spring directly secured to the bell crank lever at one end and a portion of a housing of the latch at another end; and biasing the bell crank lever in a second direction to create a rotational force towards the second position with the over center spring when the bell crank lever is in the second position, wherein the biasing force of the over center spring in the second direction is applied below an axis of rotation of the bell crank lever and the over center spring holds the bell crank lever in place in order to prevent it from bouncing around as it moves between its corresponding first and second positions, and wherein the over center spring returns the bell crank lever to the first position, which is different from a position of the bell crank lever if the bell crank lever was only directly driven by the detent lever.
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Specification