SPRING ARMING/DISARMING MECHANISM AND JUMPING TOY INCLUDING THE LATTER

摘要

The mechanism comprises a part (116) sliding with respect to a base (102), locking means (144, 154) and control means adapted i) to store energy in elastic means (122) by contraction of the sliding part and ii) to release the energy by extending the sliding part by releasing of the locking means. The control means comprise an arm (130) articulated on the sliding part (116), a part (140) driven by a motor, with a cam surface (144) stressing a finger (134) integral with the arm, and a lock (150). In a first mode, the sliding part (116) is contracted via the arm (130) through the finger (134), then released after the reaching of a release area (C) of the cam surface, in the same rotation of the rotary part, whereas in a second mode, the sliding part (116) is contracted, then locked by the lock (150), then released after the reaching of a release are (D) formed by the cam surface, causing the unlocking by a reverse rotation of the rotary part.

主权项

1. A mechanism for arming/disarming a sliding part, in particular for a jumping and/or shooting toy, comprising:
a sliding part (116) mobile in translation with respect to a base (102) between extended and contracted positions; releasable means (144, 154) for locking the sliding part with respect to the base; elastic means (122) stressed between the base and the sliding part; and control means adapted i) to progressively store potential energy in the elastic means (122) by displacement of the sliding part towards a contracted position under the action of motor means, and ii) to release the thus-stored energy, hence driving the sliding part towards the extended position under the effect of a releasing of the locking means said control means comprising: an arm (130) articulated on the sliding part (116); and a rotary part (140) rotationally mounted on the base (102), controlled by said motor means and having an inner cam surface (144) adapted to stress a finger (134) integral with the arm during the rotation of said part, the control means being adapted to control the motor means: i) in a first mode where the sliding part (116) is contracted via the cam surface (144) acting on the arm (130) through the finger (134), then abruptly released after the finger has reached a release area (C) formed by the cam surface, during the same rotational movement of the rotary part this mechanism being characterized in that it further comprises: a lock (150) adapted to cooperate with a locking arrangement (136) formed on the arm, and in that the control means are adapted to selectively control the motor means: i) in said first mode, or ii) to a second mode where the sliding part (116) is contracted via the cam surface (114) acting on the arm (130) through the finger (134), then locked by the lock (150) acting on the arm locking arrangement (136), then abruptly released after the finger has reached a release area (D) formed by the cam surface, causing the disengagement of the locking arrangement with respect to the lock during a reverse rotation of the rotary part.