阅读说明：本技术 用于包括自动闩锁机构的罐的盖 (Lid for a can including an automatic latching mechanism ) 是由 S·皮陶德 于 2020-02-18 设计创作，主要内容包括：本发明涉及一种用于罐的盖(10),所述罐用于包含植物检疫产品或液体肥料,所述盖(10)包括：第一盖零件(11),第二盖零件(12),围绕在轴向方向上的枢转轴线(14)在用于解除阻挡盖的第一角度位置与用于阻挡盖的第二角度位置之间能枢转地安装在第一盖零件上,在所述第二角度位置意在将所述盖轴向阻挡在围绕枢转轴线延伸的盖的开口边缘上；多个阻挡部件(13),意在当第二盖零件占据第二角度阻挡位置时,与罐的开口边缘接合,以相对于罐轴向阻挡盖；阻挡机构(31、32、33、41),被设计成当第二盖零件到达第二角度阻挡位置时,自动地阻挡第二盖零件相对于第一盖零件在枢转方向(P2)上从第二角度阻挡位置开始到第一角度非阻挡位置的枢转。(The present invention relates to a lid (10) for a tank for containing phytosanitary products or liquid manure, the lid (10) comprising: a first cover part (11), a second cover part (12), which is pivotably mounted on the first cover part about a pivot axis (14) in the axial direction between a first angular position for unblocking the blocking cover and a second angular position for blocking the cover, which second angular position is intended to axially block the cover on an opening edge of the cover extending about the pivot axis; a plurality of blocking members (13) intended to engage with the edge of the opening of the can to block the cover axially with respect to the can when the second cover part occupies the second angular blocking position; a blocking mechanism (31, 32, 33, 41) designed to automatically block pivoting of the second cover part relative to the first cover part in a pivoting direction (P2) starting from the second angular blocking position to the first angular non-blocking position when the second cover part reaches the second angular blocking position.)

1. A lid (10) for a pot (100), the pot (100) for containing a plant protection product or liquid manure, the lid (10) for sealing an opening (101) of the pot (100) defined by an opening rim (102), the lid (10) comprising:

a first cover element (11),

a second cover part (12) pivotably mounted to the first cover part (11) about a pivot axis (14) having an axial direction between a first angular position unblocking the cover (10) and a second angular position blocking the cover (10) intended to axially block the cover (10) to the opening rim (102) of the can (100) extending about the pivot axis (14),

a plurality of blocking members (13) for cooperating with the opening edge (101) of the can (100) when the second cover part (12) occupies the second blocking angular position, to block the cover (10) axially with respect to the can (100),

the lid (10) being characterized in that it further comprises a latching mechanism (31, 32, 33, 41) designed to: automatically latching pivoting of the second cover part (12) relative to the first cover part (11) in a pivoting direction (P2) from the second blocking angular position to the first non-blocking angular position when the second cover part (12) reaches the second blocking angular position, the latching mechanism (31, 32, 33, 41) comprising:

a latch member (31) movably mounted to one of the first and second cover parts (11, 12) between a stop position and a limit position in which a resilient return member (33) returns the latch member (31) to move towards the stop position,

a first drive member (32) integral with the other of the first cover part (11) and the second cover part (12) and designed to: on the one hand, to drive the latch member (31) movably from the stop position to the limit position, or to hold the latch member (31) in the limit position, when the second cover part (12) is pivoted from the first non-blocking angular position to the second blocking angular position; on the other hand, releasing the latch member (31) when the second cover part (12) reaches the second blocking angular position,

the latching member (31) is further designed to: when the second cover part (12) reaches the second blocking angular position and the latching member (31) moves from the limit position to the stop position under the action of the elastic return member (33), abuts against the other of the first cover part (11) and the second cover part (12), thereby automatically latching the pivoting of the second cover part (12) in the pivoting direction (P2) from the second blocking angular position to the first non-blocking angular position.

2. The lid (10) of claim 1, wherein the latch member (31) is swingably mounted to one of the first lid part (11) and the second lid part (12) between the stop position and the limit position about a swing axis (34), the swing axis (34) being circumferentially oriented about the pivot axis (14).

3. Cap (10) according to claim 1 or claim 2, wherein the first drive member (32) forms a cam cooperating with the latch member (31), forming a cam follower on its own.

4. The cap (10) according to any one of claims 1 to 3, wherein the first drive member (32) is in the form of a ramp carried by the other of the first cap part (11) and the second cap part (12) and comprising a first drive surface (35), the latch member (31) being movably driven from the stop position to the limit position, or retained in the limit position, via the first drive surface (35) when the second cap part (12) is pivoted from the first non-blocking angular position to the second blocking angular position.

5. The lid (10) according to claim 4, wherein the latching member (31) is designed to: sliding on the first driving surface (35) of the ramp along a sliding line (36) when the second cover part (12) is pivoted from the first non-blocking angular position to the second blocking angular position.

6. The lid (10) of claim 5, wherein the latch member (31) includes an inclined surface (39) by which the latch member (31) slides on the first drive surface (35) of the ramp (32).

7. The cover (10) according to any one of claims 1 to 6, wherein the other one of the first cover part (11) and the second cover part (12) comprises an abutment surface (40) which is oriented circumferentially with respect to the pivot axis (15) in a pivoting direction towards the second blocking angular position, and against which the latch member (31) abuts when the second cover part (12) reaches the second blocking angular position and the latch member (31) moves from the limit position to the stop position under the action of the resilient return member (33).

8. The cap (10) according to claim 7, wherein the abutment surface (40) is formed on the ramp (32).

9. The lid (10) according to any one of claims 1 to 8, wherein the latching mechanism (31, 32, 33, 41) comprises an unlatching member (41) designed to: -manually unlatching pivoting of the second cover part (12) relative to the first cover part (11) in the pivoting direction from the second blocking angular position to the first non-blocking angular position when the second cover part (12) occupies the second blocking angular position.

10. The lid (10) according to claim 9, wherein the unlatching member (41) is designed to drive the latching member (31) movably from the stop position to the limit position.

11. The lid (10) of claim 10, wherein the unlatching member (41) is in the form of a button slidably mounted to one of the first lid part (11) and the second lid part (12) along a sliding axis (42) between a release position in which the latching member (31) is in the detent position and an active position in which the latching member (31) is in the restricting position.

12. Cap (10) according to claim 11, wherein the button (41) forms a rod extending along the sliding axis (42) between a first end (43) and an opposite second end (44), the button (41) driving the latch member (31) movably from the stop position to the limit position via the rod.

13. Cap (10) according to claim 12, wherein the latch mechanism (31, 32, 33, 41) is axially interposed between the first cap part (11) and the second cap part (12) so as to be housed inside the cap (10), and wherein the first end (43) of the button (41) projects from one of the first cap part (11) and the second cap part (12) towards the outside of the cap (10).

14. Cap (10) according to claim 12 or claim 13, wherein the second end (44) of the button (41) carries a first face (46) perpendicular to the sliding axis (42) and oriented towards the latching member (31) on the opposite side to the first end (43) of the button (41), and wherein the first face (46) of the button (41) is designed to: -pushing the latch member (31) along the sliding axis (42) when the button (41) is slid to the activated position, thereby movably driving the latch member (31) from the stop position to the restricted position.

15. Cap (10) according to any one of claims 11 to 14, wherein the elastic return member (33) is further designed to return the push button (41) to the release position.

16. Cap (10) according to any one of claims 11 to 15, wherein the push-button (41) carries a projection (50), the projection (50) extending radially with respect to the sliding axis (42) and being designed to: abutting against one of the first cover part (11) and the second cover part (12) when the button (41) is slid to the release position.

17. The lid (10) according to any one of claims 1 to 16, wherein the blocking members (13) are distributed about the pivot axis (14), wherein each of the blocking members (13) is movably mounted with respect to the first lid part (11) and the second lid part (12) between a non-blocking position, in which the blocking member (13) is radially closer to the pivot axis than in the non-blocking position, and a blocking position, in which the blocking member is intended to cooperate with a radially outer surface (103) of the opening edge (102) of the can (100) so as to axially block the lid (10) with respect to the can (100), and wherein the lid (10) is designed such that when the second lid part (12) is pivoted from the first non-blocking angular position to the second blocking angular position, each of the blocking members (13) is moved from its non-blocking position to its blocking position.

18. The cover (10) according to claim 17, comprising a motion conversion mechanism (15, 23), said motion conversion mechanism (15, 23) being designed to convert pivoting of the second cover part (12) relative to the first cover part (11) from the first non-blocking angular position to the second blocking angular position into movement of each of the blocking members (13) relative to the first cover part (11) from its non-blocking position to its blocking position.

19. The cap (10) according to claim 18, wherein:

the motion conversion mechanism (15, 23) comprising at least one second drive member (15) carried by the second cover part (12) and cooperating with the blocking member (13), or each of the second drive members (15) cooperating with one or more of the blocking members (13),

the second drive member (15) or each of the second drive members (15) is designed to: -driving the or each blocking member (13) with which it cooperates movably with respect to the first cover part (11) from its non-blocking position to its blocking position when the second cover part (12) is pivoted from the first non-blocking angular position to the second blocking angular position.

20. Cap (10) according to claim 19, wherein the or each second driving member (15) of the second driving members (15) forms a cam cooperating with the one or more blocking members (13), forming itself a cam follower.

21. The cap (10) according to claim 19 or claim 20, wherein:

the or each second drive member (15) of the second drive members (15) is in the form of a first groove extending along an extension line (17) between a first end (20) and an opposite second end (21), the extension line (17) lying in a plane orthogonal to the pivot axis (14),

the or each of the first grooves (15) comprises at least one second drive surface (18, 19) via which one, more or all of the blocking members (13) are movably driven relative to the first cover part (11) between their non-blocking and their blocking positions when the second cover part (12) is pivoted between the first and second non-blocking angular positions.

22. The cap (10) according to claim 21, wherein the first groove (15) or the extension (17) of each of the first grooves (15) is helical.

23. The cover (10) according to claim 21 or claim 22, wherein the two first grooves (15) with which each pair of circumferentially adjacent blocking members (13) cooperates about the pivot axis (14) are radially offset from each other with respect to the pivot axis (14).

24. The cap (10) according to any one of claims 17 to 23, wherein each of the blocking members (13) is slidably mounted with respect to the first cap part (11) along a sliding line (16) between its non-blocking position and its blocking position.

25. A subassembly for a tank (100), the tank (100) being intended to contain a plant protection product or a liquid fertilizer, the subassembly comprising a lid (10) according to any one of claims 1 to 24 and an annular flange (200), the annular flange (200) extending about the pivot axis (14) and being intended to be attached to the opening edge (102) of the tank (100), the blocking member (13) further cooperating with the opening edge (102) of the tank (100) via the flange (200) when the second lid part (12) occupies the second blocking angular position.

26. A sub-assembly according to claim 25, further comprising a locking nut for attaching the flange (200) to the opening edge (102) of the can (100).

27. An assembly, comprising: a tank (100) for containing a plant protection product or a liquid fertilizer and a lid (10) according to any one of claims 1 to 24 or a sub-assembly according to any one of claims 25 to 26.

Technical Field

The present invention relates to a lid for a tank, in particular for containing plant protection products or liquid manure, a subassembly comprising a flange and such a lid, and an assembly comprising a tank and such a subassembly or such a lid.

Background

In the field of agricultural spraying, it is known that agricultural machines are equipped with containers filled with plant protection products or liquid manure. Then, this crop protection agent or liquid fertilizer is sprayed onto the crop while the agricultural machine moves in the crop field.

The can has an opening defined by an opening edge and closed by a lid conventionally comprising a first lid part and a second lid part pivotably mounted to the first lid part about an axial pivot axis between a first non-blocking angular position and a second blocking angular position in which the lid is axially blocked to the opening edge of the can.

In order to ensure such axial blocking, the opening edge of the container is provided with an internal thread which cooperates with an external thread of the second cover element after the second cover element has been pivoted into the second blocking angular position.

Latching of the second lid part in the second blocking angular position is further ensured by applying a latching torque to the second lid part to wedge the threads of the can and the second lid part together. In order to unlatch the second cover part from its second blocking angular position, an unlatching torque then needs to be applied to the second cover part to pivot it into the first non-blocking angular position.

Thus, this blocking is random as it depends on the latching torque applied to the second cover part.

Furthermore, if not enough latching torque is applied, there is a significant risk that the second lid part will unlatch by itself and pivot to a first non-blocking angular position in which the lid is no longer axially blocked to the opening edge of the can, enabling opening. This is the case, for example, when the agricultural machine is traveling over rough terrain.

However, this situation is not acceptable, as accidental spillage of the crop protection agent or liquid fertilizer contained in the tank would be harmful to the environment.

Furthermore, the introduction of foreign matter such as sand or mud into the tank should be avoided. For example, such foreign bodies can damage the spraying system through which the crop protection agent or liquid fertilizer is sucked and then sprayed onto the crop, in particular by clogging filters or nozzles of the spraying system, or even by scraping parts of valves or pumps which suck the crop protection agent or liquid fertilizer contained in the tank for spraying onto the crop.

Furthermore, in case of high latching torques applied, such blocking may result in that the second cover part is difficult to unlatch.

Disclosure of Invention

To overcome one or more of these drawbacks, the present invention provides a lid for a can comprising a first lid part, a second lid part pivotably mounted to the first lid part between a first non-blocking angular position and a second blocking angular position, a blocking member for axially blocking the lid to an opening edge of the can when the second lid part occupies the second blocking angular position, and a mechanism for automatically blocking the second lid part in the second blocking angular position.

More precisely, one object of the invention is a lid for a can for containing a plant protection product or fertilizer, for sealing an opening of the can defined by an opening rim, the lid comprising:

a first cover part for covering the first opening of the container,

a second cover part pivotally mounted to the first cover part about an axial pivot axis between a first cover non-blocking angular position and a second cover blocking angular position in which the cover is axially blocked to an opening edge of the can extending about the pivot axis,

a plurality of blocking members adapted to cooperate with the opening edge of the can to block the cover axially with respect to the can when the second cover part occupies the second blocking angular position, an

A latch mechanism designed to: when the second cover part reaches the second blocking angular position, the second cover part is automatically blocked from pivoting relative to the first cover part in the pivoting direction from the second blocking angular position to the first non-blocking angular position.

According to the present invention, a latch mechanism includes:

a latch member movably mounted to one of the first and second cover parts between a detent position and a limit position in which the resilient return member returns the latch member to the detent position,

a first drive member integral with the other of the first and second cover parts and designed to: in one aspect, the latch member is movably driven from the stop position to the restricting position or held in the restricting position when the second cover part is pivoted from the first non-blocking angular position to the second blocking angular position; on the other hand, the latch member is released when the second cover part reaches the second blocking angular position;

the latch member is further designed to: when the second cover part reaches the second blocking angular position and the latching member moves from the restricting position to the stop position under the action of the resilient return member, abuts against the other of the first cover part and the second cover part, thereby automatically latching the pivoting of the second cover part in the pivoting direction from the second blocking angular position towards the first non-blocking angular position;

according to alternative embodiments, which may be combined together or separated:

a latch member is swingably mounted to one of the first and second cover parts about a swing axis between a stop position and a limit position, the swing axis being circumferentially oriented about the pivot axis;

the first drive member forms a cam cooperating with the latch member, forming a cam follower on its own;

the first drive member is in the form of a ramp carried by the other of the first and second cover parts and including a first drive surface via which the latch member is movably driven from the rest position to the restricting position, or held in the restricting position, when the second cover part is pivoted from said first non-blocking angular position to the second blocking angular position;

the latch member is designed to: sliding on the first drive surface of the ramp along a slide line as the second cover part is pivoted from the first non-blocking angular position to the second blocking angular position;

the sliding line is rectilinear, thus forming a sliding axis;

the latch member includes an inclined surface by which the latch member slides on the first drive surface of the ramp;

the other of the first and second cover parts comprises an abutment surface, circumferentially oriented in the pivoting direction towards the second blocking angular position, against which the latching member abuts when the second cover part reaches the second blocking angular position and the latching member is moved from the limiting position to the stop position under the action of the resilient return member;

an abutment surface is formed on the slope;

the latch mechanism includes an unlatching member designed to: pivoting the second cover part relative to the first cover part in the pivoting direction from the second blocking angular position to the first non-blocking angular position when the second cover part is in the second blocking angular position;

the unlatching member is designed to move the latching member from the stop position to the restricting position;

the unlatching member is in the form of a button slidably mounted on one of the first and second cover parts along a sliding axis between a release position in which the latching member is in a rest position and an active position in which the latching member is in a restricting position;

the button forming a rod extending along the sliding axis between a first end and an opposite second end, the button movably driving the latch member from the rest position to the restricting position through the rod;

a latching mechanism axially interposed between the first and second cap parts for accommodation within the cap;

a first end of the button projecting outwardly of the cover from one of the first and second cover parts; and

the second end of the push button carries a first face perpendicular to the sliding axis and directed towards the latch member on a side opposite to the first end of the push button;

the first face of the button is designed to: pushing the latch member along the sliding axis when the button is slid to the activated position, thereby movably driving the latch member from the rest position to the restricting position;

the elastic return member is also designed to return the push-button to the release position;

the push-button carries a projection extending radially with respect to the sliding axis and designed to: abutting against one of the first and second cover parts when the button is slid to the release position;

the blocking members are distributed about the pivot axis;

each blocking member is movably mounted with respect to the first and second cover parts between a non-blocking position in which the blocking member is radially closer to the pivot axis than in the non-blocking position and a blocking position for cooperating with a radially outer surface of the opening rim of the can to axially block the cover with respect to the can;

the cover is designed such that each blocking member moves from its non-blocking position to its blocking position when the second cover part is pivoted from the first non-blocking angular position to the second blocking angular position;

the cover comprises a motion conversion mechanism designed to convert pivoting of the second cover part relative to the first cover part from a first non-blocking angular position to a second blocking angular position into movement of each latch member relative to the first cover part from its non-blocking position to its blocking position;

the motion conversion mechanism comprises at least one second drive member carried by the second cover part and cooperating with the blocking member or each second drive member cooperating with one or more blocking members;

the or each second drive member is designed to: when the second cover part is pivoted from the first non-blocking angular position to the second blocking angular position, the one or more blocking members cooperating therewith are movably driven relative to the first cover part from their non-blocking position to their blocking position;

the or each second drive member forming a cam cooperating with the one or more latch members, thereby forming a cam follower on its own;

the or each second drive member is in the form of a first recess extending between a first end and an opposite second end along an extension line lying in a plane orthogonal to the pivot axis;

the or each first recess comprises at least one first drive surface by which the one or more latch members are movably driven relative to the first cover part between their unblocking and blocking positions when the second cover part is pivoted between the first unblocking angular position and the second blocking angular position;

the blocking members are each slidably mounted to the second cover part along an extension line via the second drive surface of the first groove;

the extension line of the or each first groove is helical;

the first groove being narrower at its second end than at its first end and than between its first and second ends, the blocking member moving towards the second end when the second cover part is pivoted to the first non-blocking angular position;

the two first grooves being radially offset from each other relative to the pivot axis, each pair of circumferentially adjacent blocking members cooperating with the two first grooves about the pivot axis;

the first grooves each cooperate with one, more or all blocking members via an axial pin projecting from the latching member;

each blocking member is slidably mounted relative to the first cover part along a sliding line between its non-blocking position and its blocking position;

each sliding line is rectilinear and lies in a plane orthogonal to the pivot axis, forming a sliding axis radial to the pivot axis;

the first cover part carries guide members, each designed to slidably guide one of the latch members relative to the first cover part along its sliding line between a non-blocking position and a locking position;

the blocking members each comprise a body provided with a claw for cooperating with the radially outer surface of the opening edge of the can to axially block the lid with respect to the can when the blocking member occupies its blocking position.

The invention also relates to a subassembly for a tank for containing a plant protection product or liquid fertilizer, comprising a lid as previously described and an annular flange extending about a pivot axis and attached to an opening edge of the tank, the blocking member cooperating with the opening edge of the tank via the flange when the second lid part occupies the second angular blocking position.

According to alternative embodiments, which may be combined together or separated:

the subassembly further comprises a lock nut for connecting the flange to the opening rim of the can;

each blocking member comprises a body provided with a claw designed to be received in a notch when the blocking member occupies its blocking position and to release the notch when the blocking member occupies its non-blocking position, the notch being hollowed out radially in its entirety with respect to the pivot axis in the radially outer surface of the flange.

The invention also relates to an assembly comprising a tank for containing a plant protection product or liquid fertilizer and a lid as described before or a sub-assembly as described before.

Drawings

Other aspects, objects, advantages and features of the present invention will become more apparent upon reading of the following detailed description of preferred embodiments, given by way of non-limiting example and with reference to the accompanying drawings, in which:

FIG. 1 is an exploded view of a subassembly for a can including a flange and a lid according to one embodiment of the invention;

FIG. 2 is a top plan view of an assembly including the canister and subassembly shown in FIG. 1, with the lid occupying a first angular non-blocking position;

FIG. 3 is a top view of the assembly shown in FIG. 2 with the cover in a second angular non-blocking position;

FIG. 4 is a partial axial cross-sectional view of the assembly shown in FIGS. 2 and 3, with the cover occupying a first angular non-blocking position and with a blocking member for blocking the cover occupying a non-blocking position;

FIG. 5 is a partial axial cross-sectional view of the assembly illustrated in FIGS. 2-4, with the cover occupying a second angular blocking position and the blocking member occupying a blocking position;

FIG. 6 is a partial axial cross-sectional view of the assembly shown in FIGS. 2-5;

FIG. 7 is a partial top view of the subassembly shown in FIGS. 1 and 4-6, with the cover occupying a first non-blocking angular position and the blocking member of the cover occupying a non-blocking position;

FIG. 8 is a partial top view of the subassembly illustrated in FIGS. 1 and 4-7, with the cover occupying a second blocking angular position and the blocking member in the blocking position;

fig. 9 is a movement diagram of a movement conversion mechanism for converting the movement of the cover shown in fig. 1 and 4 to 8;

FIG. 10 is a detailed view of the latch mechanism for latching the lid of FIGS. 1 and 4-9, with the lid occupying the second blocking angular position and the latch member of the latch mechanism occupying the detent position;

FIG. 11 is a detailed view of the latch mechanism of FIG. 10, with the cover occupying a first intermediate position between the first non-blocking angular position and the second blocking angular position, and with the latch member occupying a restricting position;

FIG. 12 is a detailed view of the latch mechanism of FIGS. 10 and 11, with the cover occupying a second intermediate position between the first non-blocking angular position and the second blocking angular position, and with the latch member occupying a detent position;

FIG. 13 is a detailed axial cross-sectional view of the latch mechanism of FIGS. 10-12, with the cover occupying a second blocking angular position, the latch member occupying a detent position, and an unlatching member for unlatching the latch mechanism occupying a release position;

FIG. 14 is a detailed axial cross-sectional view of the latch mechanism shown in FIGS. 10-13, with the cover in a second blocking angular position, the latch member occupying a restricting position, and the unlatching member occupying an activating position;

FIG. 15 is a view of the cover taken along section A-A of FIG. 13, with the cover occupying a second blocking angular position and the latch member occupying a stop position;

fig. 16 is a view of the cover taken along section B-B of fig. 14, with the cover occupying the second blocking angular position and the latch member occupying the restricting position.

Detailed Description

Fig. 1 shows a subassembly, for example for a tank 100 containing a plant protection product or liquid manure, comprising a lid 10 and a flange 200, which will be described in more detail in the following description. Fig. 2-6 further illustrate an assembly comprising a can 100, a flange 200, and a lid 10, the lid 10 sealing an opening 101 of the can 100 defined by an opening rim 102. The tank 100 is used, for example, for equipping an agricultural machine (not shown).

The cover 10 comprises a first cover part 11, a second cover part 12 and a plurality of blocking members 13.

The second cover part 12 is pivotally mounted to the first cover part 11 about a pivot axis 14 between a first non-blocking angular position and a second blocking angular position in which the cover 10 is axially blocked to an opening edge 102 of the can 100 extending about the pivot axis 14. Thus, the second cover element 12 is pivoted from the first non-blocking angular position to the second blocking angular position in a first pivoting direction P1 (fig. 2 and 7) and from the second blocking angular position to the first non-blocking angular position in a second pivoting direction P2 (fig. 3 and 8) opposite to the first pivoting direction P1.

In this way, in the second blocking angular position, the axial blocking of the lid 10 on the opening edge 102 of the can 100 retains the lid 10 on the can 100, thus keeping the can 100 closed. In contrast, in the first angular blocking position, the lid 10 is not axially blocked to the opening edge 102 of the can 100, and the lid 10 may release the opening 101 of the can 100 so that the can 100 can be opened.

In the following description, the axial direction (or axial direction) is the direction of the pivot axis 14. The radial direction (or radial direction) R is the direction normal to and passing through the pivot axis 14 at any point, and the circumferential direction (or circumferential direction) is the direction normal to the radial direction and the pivot axis 14 at any point. The axial direction (or axial direction) is for example vertical, the radial direction (or radial direction) and the circumferential direction (or circumferential direction) are thus horizontal.

The first cover part 11 forms, for example, the lower part of the cover 10, while the second cover part 12 forms the upper part of the cover 10.

The blocking member 13 is intended to cooperate with the opening edge 101 of the can 100 to block the lid 10 axially with respect to the can 100 when the second lid part 12 occupies the second angular blocking position.

The lid 10 further comprises a latching mechanism 31, 32, 33, 41, the latching mechanism 31, 32, 33, 41 being visible in fig. 7 and 8, and shown in more detail in fig. 10 to 16.

The latching mechanism 31, 32, 33, 41 is designed to automatically latch the second lid part 12 in a second pivoting direction P2 from the second blocking angular position to the first non-blocking angular position relative to the first lid part 11 when the second lid part 12 reaches the second blocking angular position. The latching mechanisms 31, 32, 33, 41 thus automatically latch the second cover part 12 in the second blocking angular position.

In this way, when the second lid part 12 reaches the second blocking angular position and the blocking member 13 blocks the lid 10 axially to the can 100, the latching mechanisms 31, 32, 33, 41 prevent the second lid part 12 from pivoting to the first non-blocking angular position, thereby preventing the lid 10 from inadvertently becoming unblocked axially.

Furthermore, the latching mechanisms 31, 32, 33, 41 are automatically engaged when the second cover part 12 reaches the second blocking angular position, so that the blocking of the second cover part 12 is more reliable and safe than a manual blocking. In particular, the blocking of the second lid part 12 is no longer dependent on the magnitude of the latching torque applied to the second lid part 12, as is the case, for example, in the prior art for wedging the external thread of the lid 10 with the internal thread of the can 100.

To this end, the latch mechanisms 31, 32, 33, 41 comprise, for example, a latch member 31, a first drive member 32 and a resilient return member 33.

The latch member 31 is movably mounted to one of the first and second cover parts 11, 12 between a stop position (fig. 10, 12, 13 and 15) and a limit position (fig. 11, 14 and 16) in which the resilient return member 33 returns the latch member 31 towards the stop position.

The first drive member 32 is integral with the other of the first and second cover parts 11, 12.

In the following description, the latch member 31 will be described as being movably mounted to the second cover part 12, and the first driving member 32 will be described as being integral with the first cover part 11, but this is not restrictive. It is therefore to be understood that a person skilled in the art will be able to adapt the following description to the case where the latching member 31 is movably mounted to the first cover part 11 and the first drive member 32 is integral with the second cover part 12.

In one aspect, the first drive member 32 is designed to movably drive the latch member 31 from the stop position to the limit position when the second cover part 12 is pivoted from the first non-blocking angular position to the second blocking angular position.

As an alternative (not shown), the first drive member 32 is designed to keep the latch member 31 in the restricting position when the second cover part 12 is pivoted from the first non-blocking angular position to the second blocking angular position.

On the other hand, the first driving member 32 is designed to release the latching member 31 when the second cover part 12 reaches the second blocking angular position, the latching member 31 thus moving from the limiting position to the stop position under the action of the elastic return member 33.

The latching member 31 is further designed to abut against the first cover part 11 when the second cover part 12 reaches the second blocking angular position and the latching member 31 is moved from the limiting position to the stop position under the action of the elastic return member 33, blocking the pivoting of the second cover part 12 from the second blocking angular position to the first non-blocking angular position (fig. 10, 13 and 15).

In this way, when the second cover part 12 reaches the second blocking angular position, the elastic return member 33 provides an automatic blocking of the second cover part 12 by returning the latch member 31 to the stop position against the first cover part 11.

Furthermore, the elastic return member 33 prevents the second cover part 12 from unlatching, since the elastic return member 33 holds the latch member 31 in a stop position against the first cover part 11 when the second cover part 12 reaches the second blocking angular position.

The latch mechanisms 31, 32, 33, 41 are, for example, axially interposed between the first lid part 11 and the second lid part 12 so as to be accommodated in the inner space of the lid 10.

To this end, the second cover part 12 comprises, for example, at least one grip member 331 projecting outwardly from the cover 10, in particular two grip members 331 arranged diametrically opposite to each other with respect to the pivot axis 14, the grip member 331 or one of the grip members 331 further accommodating the latch mechanism 31, 32, 33, 41. The gripping member 331 allows a user to manipulate the second cover part 12, in particular to pivot the second cover part 12.

The latching member 31 is swingably mounted to the second cover part 12 between a stop position and a limit position, for example about a circumferentially oriented swing axis 34. Thus, the latch member 31 swings with respect to the second cover part 12 in the first swing direction B1 from the stop position to the limit position thereof, and swings in the second swing direction B2 opposite to the first swing direction B1 from the limit position thereof to the stop position thereof.

As an alternative (not shown), the latch member 31 is slidably mounted to the second cover part 12 along an axially or radially oriented sliding axis between a stop position and a limit position.

The first driving member 32 may form, in particular by sliding, a cam cooperating with the latching member 31, forming a cam follower.

For this purpose, the first drive member 32 has, for example, the form of a ramp carried by the first cover part 11 (fig. 10, 12, 15 and 16).

The ramp 32 comprises a first driving or cam surface 35 by means of which the latching member 31 is movably (in particular swingably) driven from the stop position into the limit position, or is held in the limit position, when the second cover part 12 is pivoted from the first non-blocking angular position into the second blocking angular position. When the second cover part 12 reaches the second blocking angular position, the first drive surface 35 of the ramp 32 releases the latch member 31 further.

The latching member 31 is further designed to slide on the first driving surface 35 of the ramp 32 along a sliding line 36 when the second cover part 12 is pivoted from the first non-blocking angular position to the second blocking angular position. The resilient return member 33 allows maintaining contact between the latch member 31 and the first drive surface 35 of the ramp 32.

The sliding line 36 is, for example, rectilinear, thus forming a sliding axis.

As an alternative (not shown), the sliding line 36 is curved.

When the second cover part 12 is pivoted into the second blocking angular position, the ramp 32 extends along a sliding line 36 between a first end 37 and an opposite second end 38, the latch member 31 sliding towards the second end 38.

For example, the sliding line 36 lies in a plane orthogonal to the pivot axis 14, especially when the latch member 31 swings or slides radially. Furthermore, the second end 38 is radially offset from the first end 37 on the one hand, and is circumferentially spaced from the first end 37 in the first pivot direction P1 on the other hand (fig. 15 and 16). The ramp 32 is further radially displaced and circumferentially displaced in a progressive manner along the sliding line 36 from its first end 37 to its second end 38. The ramp 32 thus provides a swinging or radial sliding drive of the latch member 31 from the stop position to the limit position.

As an alternative (not shown), particularly when the latch member 31 is slid axially, the sliding line 36 intersects a plane orthogonal to the pivot axis 14, and not parallel to the pivot axis 14. Furthermore, the second end 38 is axially offset from the first end 37 on the one hand and is circumferentially spaced from the first end 37 in the first pivot direction P1 on the other hand. The ramp 32 is further axially and circumferentially offset in a progressive manner along the sliding line 36 from its first end 37 towards its second end 38. The ramp 32 thus provides an axial sliding drive of the latch member 31 from the stop position to the limit position.

Still alternatively (not shown), the ramp 32 is only circumferentially offset along the slide line 32 when the ramp 32 holds the latch member 31 in the restrained position.

In this way, when the second cover part 12 is pivoted into the second blocking angular position, the latching member 31 slides along the ramp 32 along the sliding line 36, in particular towards the second end 38 of said ramp 32, so as to be driven movably (in particular swingably) towards the limit position or to be held in the limit position (fig. 11).

When the second cover part 12 reaches the second angular blocking position, the ramp 32, in particular the second end 38 of the ramp 32, releases the latch member 31, which latch member 31, under the action of the elastic return member 33, moves, in particular swings, towards the stop position and abuts against the first cover part 11, thereby pivotally blocking the second cover part 12 towards the first angular non-blocking position (fig. 10, 13 and 15).

The latch member 31 also comprises, for example, an inclined surface 39, by means of which inclined surface 39 the latch member 31 slides on the first driving surface 35 of the ramp 32 (fig. 11). This limits friction between the latch member 31 and the ramp 32, thereby preventing the cover 10 from jamming.

The first cover part 11 may also comprise an abutment surface 40, which abutment surface 40 is oriented circumferentially in the first pivoting direction P1 towards the second blocking angular position and against which abutment surface 40 the latching member 31 abuts when the second cover part 12 reaches the second blocking angular position and the latching member 31 is moved from the limiting position to the stop position under the action of the resilient return member 33 (fig. 10 and 13 to 16).

The abutment surface 40 is formed, for example, on the ramp 32, in particular as an extension of the second end 38 of the ramp 32. The first drive surface 35 and the abutment surface 40 may further together form an integral L-shape.

The latch mechanisms 31, 32, 33, 41 may further comprise an unlatching member 41, the unlatching member 41 being designed to manually unlatch pivoting of the second cover part 12 relative to the first cover part 11 from the second blocking angular position to the first non-blocking angular position when the second cover part 12 is in the second blocking angular position. Thus, the unlatching member 41 may be manually actuated, in particular from the outside of the lid 10.

In this way, the unlatching of the second cover part 12 in the second blocking angular position requires manual actuation and therefore user intervention. This makes the latch mechanisms 31, 32, 33, 41 more reliable and safe.

For this purpose, the unlatching member 41 is designed, for example, to drive the latching member 31 from the latching position movably (in particular swingably) into the limit position.

In this way, when the second cover part 12 occupies the second blocking angular position, the release of the latch member 41 allows the latch member 31 to be released from the abutment formed by the first cover part 11 and, therefore, the pivoting of the second cover part 12 to the first non-blocking angular position.

Once the latch member 31 is released by the unlatching member 41 from the abutment formed by the first cover part 11 (fig. 14 and 15), a slight pivoting of the second cover part 12 towards the first non-blocking angular position allows the latch member 31 to be placed back onto the ramp 32, in particular in contact with the first drive surface 35. Then, when the second cover part 12 is pivoted into the first non-blocking angular position, the latch member 31 can slide along the ramp 32 along the sliding line 36, in particular towards the first end 37 of said ramp 32.

The unlatching member 41 is, for example, in the form of a push button, slidably mounted to the second cover part 12 along a sliding axis 42 between a release position (fig. 13) in which the latching member 31 is in the arresting position and an activation position (fig. 14) in which the latching member 31 is in the restricting position. The button 41 slides in a first sliding direction C3 from the release position to the activated position and in a second sliding direction C4 opposite the first sliding direction C3 from the activated position to the release position.

The orthogonal projection of the sliding axis 42 onto a plane orthogonal to the pivot axis 14 is, for example, radially oriented.

The button 41 forms a rod extending along the sliding axis 42 between a first end 43 and an opposite second end 44, by means of which the button 41 movably drives the latch member from the stop position to the limit position.

The first end 43 of the button 41 protrudes, for example, from the second lid part 12, in particular from the grip member 331 accommodating the latching mechanisms 31, 32, 33, 41, towards the outside of the lid 10. For this purpose, an aperture 45 made in the second cover part 12, in particular in the grip member 331, may be provided. This allows the user to manually press the button 41 from outside the lid 10 to the activated position to movably drive the latch member 31 to the restricting position to unlatch the second lid part 12 from the latched pivot to the first non-blocking angular position.

The first end 43 of the button 41 may be further oriented toward the pivot axis 14.

The second end 44 of the button 41 carries a first face 46, which first face 46 is perpendicular to the sliding axis 42 and is directed towards the latch member 31 on the opposite side to the first end 43 of the button 41. The first face 46 of the button 41 is further designed to push the latch member 31 along the sliding axis 42 when the button 41 is slid to the activated position, so as to movably drive the latch member 31 towards the restricted position.

In this way, when the push-button 41 slides towards the active position, in particular because it is pressed by the user, the first face 46 of the second end 44 of the push-button 41 pushes the latch member 31, the latch member 31 moving, in particular swinging, from the stop position towards the limit position. This allows, in particular, the latch member 31 to be released from the abutment formed by the first cover part 11 when the second cover part 12 occupies the second blocking angular position, and thus pivots the second cover part 12 into the first non-blocking angular position.

The latch member 31 may further comprise two lugs 47, 48, which lugs 47, 48 are arranged circumferentially at a distance from each other and between which the second end 44 of the button 41 extends along the sliding axis 42 to a second face 49, which second face 49 is arranged parallel to the first face 46, at a distance from the first face 46 and faces the first face 46. The lugs 47, 48 are received between the first face 46 and the second face 49 of the second end 44 of the button 41.

The resilient return member 33 is for example also designed to return the push button 41 to the release position.

In this way, the button 41 occupies the release position unless pressed to the active position by the user.

The resilient return member 33 may directly or indirectly return the button 41 to the release position.

When the elastic restoring member 33 directly restores the push button 41 to the release position, the elastic restoring member 33 is installed between the second cover part 12 and the push button 41. The resilient return member 33 then indirectly returns the latch member 31 to the stop position via the push button 41, in particular via the second side 49 of the push button 41.

When the resilient return member 33 indirectly returns the button 41 to the release position, the resilient return member 33 is mounted between the second cover part 12 and the latch member 31. Then, the elastic return member 33 indirectly returns the push button 41 to the release position via the latch member 31, and the latch member 31 pushes the first face 46 of the push button 41 toward the release position.

When the latch member 31 is swingably mounted, the elastic return member 33 is, for example, in the form of a return spring, particularly a torsion spring.

For example, the push-button 41 also carries a projection 50, which projection 50 extends radially with respect to the sliding axis 42 and is designed to abut against the second cover part 12, in particular against the edge of the aperture 45, when the push-button 41 is slid into the release position (fig. 13 and 14).

In this way, when the push-button 41 slides to the release position under the action of the elastic return member 33, the projection 50 of the push-button 41 prevents the push-button 41 from being detached from the lid 10 through the aperture 45.

The blocking members 13 are distributed, for example, about a pivot axis 14.

Each blocking member 13 is further mounted movably with respect to the first and second cover parts 11, 12 between a non-blocking position (fig. 2, 4 and 7) in which the blocking member 13 is radially closer to the pivot axis 14 than in the non-blocking position, and a blocking position (fig. 3, 5 and 8) in which the blocking member 13 cooperates with a radially outer surface 103 of the opening edge 102 of the can 100 to axially block the cover 10 with respect to the can 100.

The cover 10 is further designed such that each blocking member 13 moves from its non-blocking position to its blocking position relative to the first cover part 11 and the second cover part 12 when the second cover part 12 is pivoted from the first non-blocking angular position to the second blocking angular position. Similarly, each blocking member 13 moves from its blocking position to its non-blocking position when the second cover part 12 is pivoted from the second blocking angular position to the first non-blocking angular position.

In this way, when the second cover part 12 occupies the second blocking angular position and the blocking member 13 occupies its blocking position, the blocking member 13 cooperates with the radially outer surface 103 of the can 100 (fig. 3, 5 and 8). Thus, when the agricultural machine moves in an agricultural field, for example on uneven ground, and the plant protection product or liquid manure contained in the tank 100 tends to deform the tank 100, in particular becoming oval at its opening 101, the opening edge 102 of the tank 100 presses the second cover part 12 in the direction opposite to the pivot axis 14, so that it holds the cover 10 instead of ejecting it. This reduces the risk of accidental opening of the canister 100.

The blocking member 13 is for example axially interposed between the first cover part 11 and the second cover part 12, so as to be housed inside the inner space of the cover 10.

The cover 10 comprises, for example, a motion conversion mechanism 15, 23, which motion conversion mechanism 15, 23 is designed to convert the pivoting of the second cover part 12 relative to the first cover part 11 from the first non-blocking angular position to the second blocking angular position into a movement of each latch member 13 relative to the first cover part from its non-blocking position to its blocking position.

The same applies to the pivoting of the second cover part 12 from the second blocking angular position to the first non-blocking angular position, which translates into a movement of each blocking member 13 from its blocking position to its non-blocking position.

Fig. 7 and 8 show the motion conversion mechanisms 15, 23 in more detail. Fig. 9 shows the kinematics of the motion conversion mechanism 15, 23.

To this end, the motion conversion mechanism 15, 23 comprises at least one second drive member 15, the second drive member 15 being carried by the second cover part 12 and cooperating with the blocking member 13 or each second drive member 15 cooperating with one or more blocking members 13.

The second drive member 15 is further designed to drive the blocking member 13 cooperating therewith movably from its non-blocking position to its blocking position relative to the first cover part 11 when the second cover part 12 is pivoted from the first non-blocking angular position to the second blocking angular position.

The same applies to each blocking member 13 going from the blocking position to the non-blocking position when the second cover part 12 is pivoted from the second blocking angular position to the first non-blocking angular position. Thus, the second drive member 15 carried by the second cover part 12 provides a reciprocating or alternating movement to the blocking member 13 between its non-blocking position and its blocking position relative to the first cover part 11.

In the remainder of the description, the motion conversion mechanism 15, 23 will be described as comprising a plurality of second drive members 15, each second drive member 15 cooperating with one of the blocking members 13, but this is not limitative. It will therefore be appreciated that a person skilled in the art will be able to adapt the following description to the case where the motion conversion mechanism 15, 23 comprises only a single second drive member 15 cooperating with all blocking members 13, and to the case where the motion conversion mechanism 15, 23 comprises a plurality of second drive members 15 (each second drive member 15 cooperating with several blocking members 13).

For example, the second driving members 15 each form a cam cooperating, in particular by sliding, with one of the blocking members 13, so as to form a cam follower themselves.

To this end, each second drive member 15 may have the form of a first groove extending along an extension line 17, the extension line 17 being included in a plane (not shown) orthogonal to the pivot axis 14. Extension 17 may be curved or straight, as will be described in more detail later in the description.

Each first recess 15 comprises at least one, in particular two, second driving or camming surfaces 18, 19 by which the blocking member 13 is movably driven between its unblocking position and its blocking position relative to the first cover part 11 when the second cover part 12 is pivoted between the first unblocking angular position and the second blocking angular position.

The second drive surfaces 18, 19 are generally parallel to each other and to the extension 17 and are oriented towards each other. The second drive surfaces 18, 19 are also oriented, for example, parallel to the pivot axis 14.

Furthermore, the blocking members 13 are each slidably mounted to the second cover part 12 via second drive surfaces 18, 19 along an extension line 17.

As an alternative (not shown), the blocking members 13 are each rollably mounted on the second drive surfaces 18, 19 about a rolling axis parallel to the pivot axis 14.

In this way, when the second cover part 12 is pivoted into the second non-blocking angular position, the blocking member 13 is moved relative to the second cover part 12 along the first groove 15 with which it cooperates, in particular by sliding against the second drive surfaces 18, 19, and is thus movably driven relative to the first cover part 11 towards its blocking position. The same applies when the second cover part 12 is pivoted into the first blocking angular position and the blocking member 13 is moved into its non-blocking position.

Each first groove 15 further extends along an extension line 17 between a first end 20 and a second opposite end 21, the blocking member 13 moving towards the first end 20 when the second cover part 12 is pivoted into the first non-blocking angular position and the blocking member 13 moving towards the second opposite end 21 when the second cover part 12 is pivoted into the second blocking angular position.

On the one hand, the second end 21 of the first groove 15 is radially closer to the pivot axis 14 than the first end 20, thereby ensuring a radial offset of the blocking member 13 between its non-blocking and blocking positions.

On the other hand, the second end 21 of the first groove 15 is circumferentially spaced from the first end 20 in the first pivoting direction P1, allowing the second cover part 12 to pivot relative to the blocking member 13 between the first non-blocking angular position and the second blocking angular position.

Each first groove 15 is further radially and circumferentially offset in a progressive manner from its first end 20 towards its second end 21 so as to move the blocking member 13 between its non-blocking and blocking positions of the blocking member 13 without blocking.

For this purpose, the extension 17 of each first groove 15 is, for example, helical. In this way, the first groove 15, in particular compared to an alternative (not shown) with a rectilinear first groove 15, allows the second cover part 12 to pivot over a larger angular sector, due to the radial distance covered by the blocking member 13 between its non-blocking position and its blocking position. The first recess 15 thus allows a greater pivoting amplitude of the second cover part 12.

Each first groove 15 extends, for example, along its extension 17 between its first end 20 and its second end 21 over an angular sector of between 65 ° and 75 °, in particular equal to 69 °.

The blocking member 13 can also be designed to abut against the second end 21 of the first groove 15 when the second cover part 12 is pivoted into the second blocking angular position (fig. 8), and to abut against the first end 20 of the first groove 15 when the first cover part 12 is pivoted into the first blocking angular position (fig. 7).

In this way, when the blocking member 13 abuts against the second end 21 of the first recess 15, the blocking member 13 occupies its blocking position and the second cover part 12 occupies a second blocking angular position (fig. 8). When the blocking member 13 abuts against the first end 20 of the first recess 15, the blocking member 13 occupies its non-blocking position and the second cover part 12 occupies the first non-blocking angular position (fig. 7).

The radial offset between the first end 20 and the second end 21 of the first groove 15 is for example between 7mm and 10mm, in particular equal to 8.5 mm. Thus, the blocking member 13 itself is radially displaced by 7mm to 10mm, in particular 8.5 mm.

The second drive surfaces 18, 19 of each first recess 15 are for example closer together at their second end 21 than at their first end 20 and between their first and second ends 20, 21. Thus, the first groove 15 is tighter at its second end 21 than at its first end 20 and than between its first and second ends 20, 21.

In this way, the first recess 15 provides a loose fit of the blocking member 13 at its first end 20 and between its first and second ends 20, 21, and a tight or still tight fit of the blocking member 13 at its second end 21.

Thus, friction between the blocking member 13 and the second drive surfaces 18, 19 is increased at the second end 21 of the first groove 15, thereby preventing the blocking member 13 from moving in the blocking position. On the other hand, the friction at the first end 21 and between the first end 20 and the second end 21 is reduced to reduce the torque required to pivot the second cover part 12.

The blocking member 13 slides along the first groove 15, for example via a boss (not shown) which is carried by the blocking member 13, in particular machined on the blocking member 13. The bosses cooperate for example with the second drive surfaces 18, 19. The bosses extend, for example, radially.

The two first grooves 15 are, for example, radially offset from each other, each pair of circumferentially adjacent blocking members 13 cooperating with the two first grooves 15.

In this way, the number of blocking members 13 distributed about the pivot axis 14 can be increased without reducing the angular sector through which the second cover part 12 pivots.

For example, the first grooves 15 each cooperate with one of the blocking members 13 via an axially oriented pin 22 protruding from the blocking member 13. Each blocking member 13 therefore carries a pin 22, which pin 22 cooperates, in particular by sliding, with the second driving surface 18, 19 of one of the first grooves 15. The pin 22 carries, for example, a boss.

As an alternative (not shown), the pin 22 is carried by the second cover part 12, while the first recess 15 is carried by the blocking member 13.

As a further alternative (not shown), the motion conversion mechanism 15, 23 comprises a single second drive member 15 in the form of a part which is pivotally integrated with the second cover part 12 about the pivot axis 14. The part includes a plurality of cam surfaces parallel to the pivot axis 14 and distributed about the pivot axis 14. The cam surfaces are oriented in a direction opposite the pivot axis 14. Each of these cam surfaces further cooperates, in particular by sliding, with one of the blocking members 13, so as to form a cam follower. The lid 10 further comprises one or more elastic return members mounted between the blocking member 13 and the first lid part 11 and designed to return the blocking member 13 to its blocking position.

Each blocking member 13 is slidably mounted, for example relative to the first cover part 11, along a sliding line 16 between its non-blocking position and its blocking position, whereby the blocking member 13 is slidably driven by the second driving member 15. Thus, each blocking member 13 slides with respect to the first cover part 11 in the third sliding direction C1 from its non-blocking position to its blocking position and in the fourth sliding direction C2 opposite to the third sliding direction C1 from its blocking position to its non-blocking position.

Each sliding line 16 is for example included in a plane (not shown) orthogonal to the pivot axis 14.

Each slide line 16 is for example rectilinear.

Thus, when the sliding lines 16 are rectilinear and lie in a plane orthogonal to the pivot axis 14, each sliding line 16 forms a radial sliding axis.

In this way, the blocking members 13 each slide radially with respect to the first cover part 11 between their non-blocking position and their blocking position.

Alternatively (not shown), each slide line 16 is curved.

The first cover part 11 carries, for example, guide members 23, the guide members 23 each being designed to guide one of the blocking members 13 in movement, in particular when sliding along the sliding line 16, relative to the first cover part 11 between its non-blocking position and its blocking position.

To this end, each guide member 23 has the form, for example, of a second groove extending along the sliding line 16 and housing one of the blocking members 13 so as to guide it sliding between its non-blocking position and its blocking position.

The second grooves 23 each extend, for example, along the slide line 16 between a first end 231 and an opposite second end 232, the second end 232 being radially closer to the pivot axis 14 (fig. 1) than the first end 231.

For example, the blocking members 13 each project radially from a first end 231 of the second recess 23 accommodating it in a direction opposite to the pivot axis 14 (fig. 2 and 7). This allows the blocking member 13 to cooperate with the radially outer surface 103 of the opening edge 102 of the can 100 to block the lid 10 axially with respect to the can 100 when they occupy their blocking position.

The flange 200 is, for example, annular and extends about the pivot axis 14. The flange 200 is further attached to the opening edge 102 of the can 100, wherein the blocking member 13 further cooperates via the flange 200 with the opening edge 102 of the can 100, in particular with the radially outer surface 103 thereof, when the blocking member 13 occupies its blocking position.

To this end, the flange 200 itself has a radially outer surface 201, with which radially outer surface 201 the blocking member 13 cooperates in its blocking position (fig. 5).

For example, the lid 10 is hinged to the flange 200 about a hinge axis 202 substantially perpendicular to the pivot axis 14 between a position for opening the lid 10 and a position for closing the lid 10, in which the lid 10 seals the opening 101 of the can 100 (fig. 2, 3, 7 and 8).

The lid 10 may be hinged to the flange 200 via a first lid part 11, while a second lid part 12 is axially retained on the first lid part 11.

For this purpose, for example, a cover sector 24 (fig. 1 to 8) is provided. These cover sectors 24 are mounted integrally with the first cover part 11, in particular by screwing, and each comprise a retaining portion 25, which retaining portion 25 is arranged axially facing the second cover part 12 and is located axially on the opposite side of the first cover part 11 with respect to the second cover part 12 (fig. 4 and 6). The cover sectors 24 are inserted, for example, into the periphery of the first cover part 11 and the second cover part 12.

A retaining nut (not shown) is also provided, for example, for attaching the flange 200 to the opening rim 102 of the can 100. Such nuts have higher tear strength than standard rivets or screws. Thus, the flange 200 and the lid 10 can be torn off from the tank 100 more easily, especially when the agricultural machine brakes or turns at high speed, and the plant protection product or liquid manure contained in the tank 100 generates waves that tend to make up the ejection flange 200 and the lid 10. Furthermore, such a nut allows for the non-destructive disassembly of the subassembly comprising the flange 200 and the lid 10. These lock nuts are made of stainless steel, for example.

The blocking members 13 each comprise, for example, a body 26, the body 26 being provided with a claw 27, the claw 27 cooperating with the radially outer surface 103 of the opening edge 102 of the can 100, in particular with the radially outer surface 201 of the flange 200, to axially block the lid 10 with respect to the can 100 when the blocking member 13 occupies its blocking position (fig. 4 and 5).

To this end, the jaws 27 of each blocking member 13 are designed, for example, to be housed in a notch 203, the notch 203 entirely hollowing radially the outer radial surface 103 of the opening edge 102 of the tank 100, in particular the outer radial surface 201 of the flange 200, when the blocking member 13 occupies its blocking position, and releasing the notch 203 when the blocking member 13 occupies its unblocking position (fig. 1, 4 and 5).

The radially outer surface 103, 201 of the tank 100 or of the flange 200 is, for example, provided with a plurality of notches 203 distributed about the pivot axis 14, each notch 203 being designed to accommodate one or more claws 27 of the blocking member 13 when the blocking member 13 occupies its blocking position.

As an alternative (not shown), the radially outer surface 103, 201 of the can 100 or flange 200 is provided with a single recess designed to accommodate the claws 27 of all the blocking members 13 when the blocking members 13 occupy their blocking position.

The pawl 27 of each blocking member 13 has, for example, a first portion 29 and a second portion 30, the first portion 29 extending axially as a whole from the body 26 of the blocking member 13, the second portion 30 being a continuation of the first portion 29, extending radially as a whole towards the pivot axis 14 and away from the body 26. The claws 27 thus fold or fold back over the body 26.

The claws 27 of each blocking member 13 extend, for example, over an angular sector between 20 ° and 60 ° (inclusive of 20 ° and 60 °), in particular equal to 30 °.

The claws 27 of the blocking member 13 cover, for example together or cumulatively, an angular sector greater than 180 °, in particular equal to 210 °.

The cover 10 comprises, for example, seven blocking members 13, each comprising a claw 27 covering an angular sector of 30 °, so that the claws 27 cumulatively cover an angular sector of 210 °. The remaining angular sector corresponding to 150 ° is used, for example, by the second groove 23(105 °) and the hinge of the lid 10 on the flange 200(45 °).

It should be understood here that, in the absence of the flange 200, the jaws 27 of the blocking member 13 cooperate with the radially outer surface 103 of the opening edge 102 of the can 100, wherein one or more recesses may be radially hollowed out as a whole.

The lid 10 may also comprise an annular seal 28, which annular seal 28 is housed in an integral radially hollowed-out groove of the first lid part 11 and is designed to cooperate with a radially inner surface 204 of the flange 200 when the lid 10 is in the closed position (fig. 4 and 6).

As an alternative (not shown), when the second cover element 12 is pivoted from the first non-blocking angular position to the second blocking angular position, the blocking member 13 is in the form of an external thread cooperating with an internal thread carried by the radially inner surface of the opening edge 102 of the can 100, in particular the radially inner surface 204 of the flange 200.

The first and second cover parts 11, 12 are made, for example, of polypropylene (also called "PP") so as to give them flexibility to adapt to the deformation of the tank 100. The polypropylene is for example filled with 20% by weight of talc in order to limit friction with the blocking member 13.

The flange 200 is also made of polypropylene, in particular filled with 20% by weight of talc, for example.

The blocking member 13 and, where applicable, the latching member 31 and the button 41 are made, for example, of polyamide (also called "PA"), in particular PA6.6 filled with 30% by weight of glass fibers.

The resilient return member 33 is made of stainless steel, for example.

The above described lid 10 is particularly advantageous in that the lid 10 realizes an automatic latching mechanism 31, 32, 33, 41 of the second lid part 12 in its second angular blocking position. Therefore, the latch mechanisms 31, 32, 33, 41 are more reliable and safe. This reduces the risk of the second cover part 12 pivoting by itself from the second blocking angular position to the first non-blocking angular position, thereby reducing the risk of the cover 10 opening unintentionally.