Shutter device for a front-end air intake of a motor vehicle comprising a shutter disconnection device

1 . A blocking device for a front end air inlet of a motor vehicle comprising:

a support frame having two lateral uprights and two end cross-pieces connecting the two lateral uprights;

at least two flaps arranged inside the support frame and pivoting around a pivot axis between a first open end position and a second closed end position, each of the at least two flaps comprising a flap body, a first end connected to the support frame by a first pivot connection,

wherein the first end of a first flap of the at least two flaps comprises a release device of said first flap, and

wherein the first end of a second flap of the at least two flaps also comprises a release device of said second flap,

each release device comprising:

a first part connected to the flap body containing a first ring, and

a second part arranged opposite the first part, containing a second ring, and comprising the first pivot connection to the support frame; and

at least one mechanical stop positioned on the support frame, the first part of the release device and the flap body being configured to come into contact with said at least one mechanical stop, such that when the first part of the release device and the flap body are in contact with said at least one mechanical stop, the first part and the second part move apart from one another by the rotation of the second part,

wherein the first ring and the second ring facilitate engagement of the first part and the second part.

2 . The blocking device as claimed in claim 1 , wherein the first part and the second part of the release device are connected by a male/female device comprising at least one first contact zone so as to transmit the rotational movements of a drive device to the flap body towards the first open end position, and at least one seconds contact zone so as to transmit the rotational movements of the drive device to the flap body towards the second closed end position, at least one of the first or second contact zones of the male/female device forming an angle with a parallel to the pivot axis.

3 . The blocking device as claimed in claim 2 , wherein only the first contact zone between the first part and the second part of the release device forms an angle with a parallel to the pivot axis.

4 . The blocking device as claimed in claim 2 , wherein the first contact zone of the male/female device and the second contact zone of the male/female device both form an angle with a parallel to the pivot axis.

5 . The blocking device as claimed in claim 1 , wherein the male/female device comprises:

a first base arranged on the first part of the release device,

a second base arranged on the second part of the release device opposite the first base,

at least one male member arranged on one or the other of the first or second bases, said male member protruding parallel to the pivot axis, and

at least one female member complementary to the at least one male member and arranged on the base opposite the base carrying the at least one male member.

6 . The blocking device as claimed in claim 2 , wherein the drive device is configured to extend the rotational movement of one of the at least two flaps when the latter comes into contact with the at least one mechanical stop, and to detect the resistance to rotation of the one of the at least two flaps and to stop its rotation on reaching a given resistance value,

said drive device also being configured to stop its rotation when it reaches a predetermined travel exceeding that necessary for reaching the at least one mechanical stop without encountering a resistance to rotation of the at least two flaps, and to send an error signal to an electronic management system.

7 . The blocking device as claimed in claim 1 , wherein a stop is arranged on each end cross-piece such that each corresponding stop comes into opposition with the pivoting of the first flap when the latter is in an end position and of the second flap when the latter is in the opposite end position.

8 . The blocking device as claimed in claim 1 , wherein the first ring comprises a bead and the second ring comprises a groove which engage in one another so as to clip the first part to the second part.

9 . The blocking device as claimed in claim 8 , wherein the bead is located on an outer face of the first ring.

10 . The blocking device as claimed in claim 8 , wherein the groove is located on an inner face of the second ring.

11 . The blocking device as claimed in claim 1 , further comprising a poka-yoke device configured to position the second part on the first part.