Armrest

1. An armrest comprising

a base;

a support arm pivotal on the base between a first end position and a second end position;

a latch including a first latch formation carried by the support arm and a second latch formation on the base for releasably securing the support arm relative to the base in the second end position; and

a spring on the support arm, biasing the support arm from one of the end positions toward the other end position, and forming the first latch formation.

2. The armrest defined in claim 1 , wherein the spring is a one-piece leaf spring formed unitarily with the first latch formation.

3. The armrest defined in claim 2 , wherein the leaf spring has first and second legs.

4. The armrest defined in claim 3 , wherein the leaf spring has a bight portion from ends of which the first and second legs extend, the bight portion being fixed directly to the support arm.

5. The armrest defined in claim 4 , wherein one of the first and second legs of the spring has a support portion engageable with the base in at least a portion of a pivot range between the first and second end positions.

6. The armrest defined in claim 1 , wherein in the other end position the first latch formation fits with the second latch formation.

7. The armrest defined in claim 6 wherein the first latch formation is a shoulder formed on the spring and inhibiting movement of the support arm toward the other of the end positions, but deflectable out of engagement with the second latch formation when a force in a direction urging the support arm into the one end position is applied to the support arm.

8. The armrest defined in claim 1 , further comprising:

another latch operable to secure the arm rest in the first position, the second position being an upper position.