CN213503825U - Urea case lid and urea case - Google Patents

Abstract

The utility model relates to a urea case technical field discloses a urea case lid and urea case, and the urea case lid includes: the linkage assembly is arranged on the outer cover in a covering mode and can move between a first position and a second position along the second direction, and the linkage assembly is matched with the linkage assembly to move along the first direction and be clamped with the inner cover or separated from the inner cover so as to enable the inner cover and the outer cover to be selectively linked; the lock is arranged on the outer portion of the outer cover and is configured to lock or unlock the outer cover and the movable locking pin. This urea case lid can lock or unblock enclosing cover and activity lockpin through the outside lock that sets up of enclosing cover, has realized that the external lock of taking of urea case lid, when the lock damages or the key is lost, only need change the lock can, avoid scrapping whole urea case lid, saved the cost.

Description

Urea case lid and urea case

Technical Field

The utility model relates to a urea case technical field especially relates to a urea case lid and urea case.

Background

At present, automobile emission regulations are becoming more and more stringent, and the treatment technology of selective catalytic reduction of nitrogen oxides in the tail gas emission of diesel engines by using automobile urea is widely applied to the tail gas aftertreatment of diesel engines by manufacturers, thereby meeting the requirements of environmental protection departments. The urea solution is needed to be used in the technology, the urea box needs to be additionally installed when the vehicle technology is upgraded, and the urea box needs to be fixedly integrated on a vehicle body, so that an integrated urea box assembly is needed, and the catalytic reduction reaction is convenient to perform.

The existing urea box comprises a box body and a box cover, the urea box cover is generally set to be an anti-theft type in order to prevent urea liquid in the urea box from being stolen, most of the existing urea box cover with a lock is provided with a built-in lock cylinder, and if the lock cylinder is damaged or a key is lost, the whole cover can only be scrapped, so that resource waste is caused. Therefore, a need exists for a urea tank cover that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a urea case lid and urea case has solved current urea case lid and has adopted built-in lock core, damages or the key loses at the lock core, and whole lid can only be scrapped, the technical problem of extravagant data.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a urea case lid, include:

an inner cover;

the outer cover is covered on the inner cover, a linkage assembly is movably arranged in the outer cover along a first direction, a movable lock pin is movably arranged on the outer cover along a second direction, the movable lock pin is configured to be capable of moving between a first position and a second position along the second direction and matched with the linkage assembly, so that the linkage assembly moves along the first direction and is clamped with the inner cover or separated from the inner cover, and the inner cover and the outer cover are selectively linked; and

a lock disposed outside the outer cover, the lock configured to be able to lock or unlock the outer cover and the movable lock pin.

The linkage assembly is movably arranged in the outer cover of the urea box along the first direction, the movable lock pin is arranged on the outer cover along the second direction, the movable lock pin can move between the first position and the second position along the second direction and is matched with the linkage assembly, so that the linkage assembly moves along the first direction and is connected with the inner cover in a clamping mode or separated from the inner cover, the inner cover and the outer cover are selectively linked, the outer cover and the movable lock pin can be locked or unlocked through a lock arranged outside the outer cover, the external belt lock of the urea box cover is realized, when the lock is damaged or a key is lost, the lock only needs to be replaced, the whole urea box cover is prevented from being scrapped, and the cost is saved.

As a preferable mode of the above urea tank cover, the urea tank cover further includes:

an elastic assembly configured to drive the linkage assembly to reset to disengage the linkage assembly from the inner lid.

The elastic component can drive the linkage component to reset so that the linkage component is separated from the inner cover.

As a preferable mode of the above urea tank cover, the linkage assembly is an integral structure, and the elastic assembly is disposed between the linkage assembly and the inner cover and used for enabling the linkage assembly to move along the first direction towards a direction away from the inner cover.

The linkage assembly is of an integrated structure, the structure is simple, parts are few, and the linkage assembly can be driven by the elastic assembly between the linkage assembly and the inner cover conveniently.

As a preferable mode of the above urea tank cover, the linkage assembly includes:

the abutting piece is matched with the movable lock pin; and

the linkage piece is sleeved on the outer side of the abutting piece and abutted against the convex shoulder of the abutting piece, and the abutting piece is configured to drive the linkage piece to move when moving towards the direction far away from the inner cover along the first direction; the linkage is separable from the inner lid when moving in the first direction toward the inner lid.

The linkage assembly comprises a propping piece and a linkage piece, the linkage piece is sleeved outside the propping piece and is propped against the convex shoulder of the propping piece, and when the propping piece moves towards the inner cover direction along the first direction, the linkage piece can be driven to move; when the abutting part moves towards the direction far away from the inner cover along the first direction, the linkage part and the abutting part are separated and can not move synchronously, so that the linkage part and the inner cover are abutted conveniently.

As a preferable mode of the above urea tank cover, the urea tank cover further includes an elastic component, and the elastic component includes:

the two ends of the first elastic piece are respectively abutted against the abutting piece and the inner cover; and

and two ends of the second elastic part are respectively abutted against the linkage part and the outer cover, and the elasticity of the first elastic part is greater than that of the second elastic part.

The urea box cover comprises an elastic component, two ends of a first elastic part of the elastic component are respectively abutted against the abutting part and the inner cover and used for driving the abutting part to move along a first direction away from the inner cover; the two ends of the second elastic part are respectively abutted against the linkage part and the outer cover and used for driving the linkage part to move towards the inner cover along the first direction, and the elastic force of the first elastic part is larger than that of the second elastic part, so that the first elastic part drives the linkage part to drive the pressing part to move towards the direction away from the inner cover.

As a preferable mode of the above urea tank cover, the outer cover includes:

an outer cover main body; and

the locking part is connected with the outer cover main body and communicated with the interior of the outer cover main body;

the linkage assembly is movably arranged in the outer cover main body along the first direction and can extend into the locking portion from the outer cover main body, and the movable lock pin is movably arranged in the locking portion along the second direction and can selectively press the linkage assembly so as to enable the linkage assembly to be clamped with the inner cover or separated from the inner cover.

The outer cover comprises an outer cover main body and a locking portion, the linkage assembly is movably arranged in the outer cover main body along a first direction and can stretch into the locking portion from the outer cover main body, the movable lock pin is movably arranged in the locking portion along a second direction and can selectively abut against the linkage assembly, so that the linkage assembly is clamped with the inner cover or separated from the inner cover, and the linkage assembly and the movable lock pin are conveniently accommodated and installed.

As a preferable mode of the above urea tank cover, the movable latch includes:

the body is movably arranged in the locking part along the second direction, and one end of the body is locked or unlocked with the outer cover through the lock; and

the pressing part is arranged at the other end of the body, and an avoiding groove is formed in the position where the pressing part is connected with the body;

when the movable lock pin is located at the first position, the pressing part presses the linkage assembly and enables the linkage assembly to move towards the inner cover along the first direction, so that the linkage assembly is clamped with the inner cover; when the movable lock pin is located at the second position, the linkage assembly extends into the avoidance groove and is separated from the inner cover.

The movable lock pin with the structure is simple in structure, and the linkage assembly can be pressed and released through the movable lock pin moving along the second direction.

As a preferable scheme of the above urea tank cover, a first locking hole is provided on the locking portion, a second locking hole is provided at one end of the body, when the movable lock pin is located at the second position, the first locking hole corresponds to the second locking hole, and the lock can pass through the first locking hole and the second locking hole to lock the movable lock pin and the outer cover.

The locking part is provided with a first locking hole, one end of the body is provided with a second locking hole, when the movable lock pin is located at the second position, the first locking hole corresponds to the second locking hole, the lock can penetrate through the first locking hole and the second locking hole to lock the movable lock pin and the outer cover, and the movable lock pin and the outer cover can be conveniently locked and unlocked through the lock by the aid of the first locking hole and the second locking hole.

As an optimal scheme of above-mentioned urea case lid, the inner cup include the inner cup main part and set up in center seat in the inner cup main part, be provided with joint portion in the center seat, the linkage subassembly set up in the center seat with between the enclosing cover, and selectivity with joint looks joint.

The utility model also provides a urea case, the power distribution box comprises a box body, be provided with the filler on the box, still include like foretell urea case lid, urea case lid is established on the filler.

This urea case is established on the filler of box through foretell urea case lid, is convenient for lock and unblock, when the lock damages or the key loses, only need to change the lock can, avoid scrapping whole urea case lid, saved the cost.

The utility model has the advantages that:

the utility model provides a urea case lid, be provided with linkage assembly along the first direction activity in the enclosing cover, be provided with movable lockpin along the second direction on the enclosing cover, movable lockpin can follow the second direction and move between primary importance and second place, and with linkage assembly cooperation, so that linkage assembly removes and breaks away from with inner cup looks joint or with the inner cup mutually along the first direction, so that inner cup and enclosing cover selectivity link, the lock that sets up through the enclosing cover outside can lock enclosing cover and movable lockpin or unblock, the external area lock of urea case lid has been realized, when the lock damages or the key loses, only need to change the lock can, avoid scrapping whole urea case lid, the cost is saved.

The utility model provides a urea case establishes on the filler of box through foretell urea case lid, and the locking and the unblock of being convenient for when the lock damages or the key is lost, only need to change the lock can, avoid scrapping whole urea case lid, saved the cost.

Drawings

Fig. 1 is a schematic structural diagram of a urea tank cover mounted on a urea tank body according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a urea tank cover provided in an embodiment of the present invention, the urea tank cover being mounted on a filling port of a urea tank body;

FIG. 3 is a front view of a urea tank cover mounted on a filling port of a urea tank body according to a first embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a ready-to-assemble view of the cover, the moveable latch, and the lock provided in accordance with an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a urea tank cover provided in the embodiment of the present invention with an outer cover removed;

fig. 7 is a schematic structural view of the movable lock pin, the linkage assembly and the center seat according to an embodiment of the present invention;

fig. 8 is a top view of the movable locking pin, linkage assembly and center seat assembly in accordance with an embodiment of the present invention;

fig. 9 is a front view of the movable lock pin, linkage assembly and center seat assembly of the present invention;

fig. 10 is a schematic structural view of a movable lock pin of a urea tank cover provided by the second embodiment of the present invention in a second position;

fig. 11 is a schematic structural view of a movable lock pin of a urea tank cover provided in the second embodiment of the present invention at a first position;

fig. 12 is a schematic structural view of a linkage assembly and an elastic assembly according to a second embodiment of the present invention;

fig. 13 is an exploded view of a linkage assembly according to a second embodiment of the present invention;

fig. 14 is a schematic structural view of a movable lock pin of a urea tank cover provided by the third embodiment of the present invention in a first position;

FIG. 15 is a cross-sectional view taken along line B-B of FIG. 14;

fig. 16 is a schematic structural view of a movable lock pin of a urea tank cover provided by the third embodiment of the present invention at a second position;

fig. 17 is a sectional view taken along line C-C of fig. 16.

In the figure:

1. an inner cover; 11. an inner cap body; 12. a center seat; 121. a clamping part; 13. positioning the notch;

2. an outer cover; 21. an outer cover main body; 22. a locking portion; 221. a first locking hole;

3. a linkage assembly; 31. a holding member; 32. a linkage member;

4. a movable lock pin; 41. a body; 411. a second locking hole; 42. a pressing part; 43. an avoidance groove;

5. locking;

6. an elastic component; 61. a first elastic member; 62. a second elastic member;

7. an anti-lost ring;

100. a urea box cover; 200. a box body; 201. and a filling port.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, the present embodiment provides a urea tank, which includes a tank body 200, a filling port 201 provided on the tank body 200, and a urea tank cover 100, where the urea tank cover 100 covers the filling port 201. The urea tank is covered on the filler port 201 of the tank 200 by the urea tank cover 100.

As shown in fig. 1 to 5, the urea tank cover 100 includes an inner cover 1 and an outer cover 2, the outer cover 2 is covered on the inner cover 1 and can selectively rotate relative to the inner cover 1, a linkage assembly 3 is movably disposed in the outer cover 2 along a first direction (the first direction is a direction of a Y arrow in fig. 4 and a reverse direction thereof), a movable lock pin 4 is movably disposed on the outer cover 2 along a second direction (a direction of an X arrow in fig. 4 and a reverse direction thereof), and the movable lock pin 4 can move between a first position and a second position along the second direction and is engaged with the linkage assembly 3, so that the linkage assembly 3 moves along the first direction and is engaged with the inner cover 1 or disengaged from the inner cover 1, so that the inner cover 1 and the outer cover 2 can be selectively linked. The urea box cover 100 further comprises a lock 5, the lock 5 is arranged outside the outer cover 2, the lock 5 can lock or unlock the outer cover 2 and the movable lock pin 4, the external belt lock 5 of the urea box cover 100 is achieved, when the lock 5 is damaged or a key is lost, the lock 5 only needs to be replaced, the whole urea box cover 100 is prevented from being scrapped, and cost is saved. Wherein the first direction is perpendicular to the second direction.

The urea tank cover 100 further includes an elastic member 6, and the elastic member 6 is used for driving the linkage member 3 to return so as to disengage the linkage member 3 from the inner cover 1. The elastic assembly 6 is disposed between the linkage assembly 3 and the inner cap 1 to move the linkage assembly 3 in a first direction toward a direction away from the inner cap 1. In this embodiment, the linkage assembly 3 is of an integrated structure, the structure is simple, the number of parts is small, and the elastic assembly 6 between the linkage assembly 3 and the inner cover 1 can facilitate the driving of the linkage assembly 3 of the integrated structure.

Further, the outer cover 2 includes an outer cover body 21 and a locking portion 22, the locking portion 22 is connected to the outer cover body 21 and is communicated with the inside of the outer cover body 21, an accommodating space is formed in the outer cover body 21, the linkage assembly 3 is movably disposed in the accommodating space in the outer cover body 21 along a first direction, but the linkage assembly 3 cannot rotate relative to the outer cover body 21, the locking portion 22 is disposed on one side of the outer cover body 21, an insertion hole is formed in the locking portion 22 and is communicated with the accommodating space, the movable lock pin 4 is movably disposed in the insertion hole and the accommodating space of the locking portion 22 along a second direction, the movable lock pin 4 can selectively press the linkage assembly 3 when moving along the second direction, so that the linkage assembly 3 is clamped with the inner cover 1 or separated from the inner cover 1, and the structure facilitates accommodating and mounting of the linkage assembly 3 and the movable lock pin 4.

Alternatively, the end of the latch 22 not connected to the outer cover main body 21 is provided with an insertion opening communicating with the insertion hole through which the movable lock pin 4 is inserted into the insertion hole.

As shown in fig. 4, 5 and 6, the inner cap 1 includes an inner cap body 11 and a center seat 12, the center seat 12 is disposed in the inner cap body 11, the center seat 12 is connected with the inner cap body 11 in a clamping manner, the linkage assembly 3 is disposed between the center seat 12 and the outer cap 2, and the linkage assembly 3 can be conveniently connected with or disconnected from the inner cap 1 in a clamping manner through the center seat 12.

Specifically, the inner cap main body 11 is provided with a mounting hole, the inner wall of the mounting hole is provided with a clamping groove, and the center seat 12 is provided with a clamping piece which is clamped with the clamping groove. In this embodiment, the circumference inner wall of mounting hole is provided with a plurality of draw-in grooves, is provided with a plurality of fasteners on the center seat 12, and the fastener is connected with the draw-in groove looks joint, and when linkage assembly 3 and center seat 12 looks joint, center seat 12 can drive inner cup 1 synchronous rotation.

As shown in fig. 6, a clamping portion 121 is disposed at the center of the center seat 12, the linkage assembly 3 can be selectively clamped with the clamping portion 121, a horizontal cross section of the clamping portion 121 is a star-shaped structure, the linkage assembly 3 can be clamped with the clamping portion 121 when moving towards the center seat 12 along a first direction, and the linkage assembly 3 moves away from the center seat 12 along the first direction and is separated from the clamping portion 121.

As shown in fig. 4, 5, and 7-9, the movable lock pin 4 includes a body 41 and a pressing portion 42, the body 41 is movably disposed in the locking portion 22 along the second direction, one end of the body 41 is locked or unlocked with the outer lid 2 through the lock 5, the pressing portion 42 is disposed at the other end of the body 41, and an avoiding groove 43 is disposed at a position where the pressing portion 42 is connected to the body 41; when the movable lock pin 4 is located at the first position, the pressing part 42 presses the linkage component 3 and enables the linkage component to move towards the inner cover 1 along the first direction, so that the linkage component 3 is clamped with the inner cover 1; when the movable latch 4 is located at the second position, the linkage assembly 3 extends into the avoiding groove 43, and the linkage assembly 3 is separated from the inner lid 1. The movable lock pin 4 with the structure is simple in structure, and the linkage component 3 can be pressed and released through the movement of the movable lock pin 4 along the second direction.

As shown in fig. 5, the locking portion 22 is provided with a first locking hole 221, one end of the body 41 is provided with a second locking hole 411, when the movable lock pin 4 is located at the second position, the first locking hole 221 corresponds to the second locking hole 411, the lock 5 can pass through the first locking hole 221 and the second locking hole 411 to lock the movable lock pin 4 and the outer cover 2, and the locking and unlocking of the movable lock pin 4 and the outer cover 2 by the lock 5 is facilitated through the arrangement of the first locking hole 221 and the second locking hole 411.

In order to prevent the lock 5 from being disengaged from the locking portion 22, a limiting portion is disposed on one side of the locking portion 22, where the insertion opening is disposed, and the limiting portion is used for limiting a moving distance of the lock 5 along the second direction. Specifically, the limiting part is a limiting groove arranged on the locking part 22, the end part of the movable lock pin 4 is provided with a limiting part, the limiting part extends into the limiting groove and can move in the limiting groove, the moving distance of the movable lock pin 4 is limited by the length of the limiting groove, and the movable lock pin 4 can only move between a first position and a second position, wherein the first position is that the end part of the movable lock pin 4 extends out of the locking part 22, and at the moment, the movable lock pin 4 is abutted against the linkage component 3; the second position is that the movable lock pin 4 extends into the locking portion 22, and the movable lock pin 4 is not abutted against the linkage assembly 3.

As shown in fig. 2 and 3, the inner cap 1 and the outer cap 2 are provided with the anti-lost ring 7, the anti-lost ring 7 has two ring sleeves connected by a connecting rope, one of the ring sleeves is provided on the outer cap 2, and the other ring sleeve is provided on the filling port 201, so that the outer cap 2 and the inner cap 1 can be prevented from being separated, and the outer cap 2 can be prevented from being lost.

When the urea tank cover 100 is in the unlocked state:

the lock 5 is in an unlocking state, the movable lock pin 4 is pulled out, the linkage component 3 is forced to move downwards under the abutting action of the abutting part 42 of the movable lock pin 4, the elastic component 6 is compressed at the moment, the linkage component 3 is clamped with the clamping part 121 in the central seat 12, the linkage of the inner cover 1 and the outer cover 2 can be realized at the moment, and the urea box cover 100 can be installed on a box body 200 of the urea box through rotating.

When the urea tank cover 100 is in the locked state:

the movable lock pin 4 is pressed in, the lock 5 is in a locking state, at the moment, the movable lock pin 4 is arranged relatively to the linkage component 3 due to the avoidance groove 43, moves upwards under the elastic action of the elastic component 6 and extends into the avoidance groove 43, the linkage component 3 is separated from the clamping part 121, the outer cover 2 is rotated at the moment, the linkage component 3 can be driven by the outer cover 2 to rotate together, but the linkage component 3 is not clamped with the clamping part 121, the inner cover 1 cannot rotate along with the linkage component 1, only the outer cover 2 rotates together with the linkage part 32 at the moment, and the state of idling is realized.

Example two:

the present embodiment provides a urea tank cover, in the present embodiment, a linkage assembly of the urea tank cover is a split structure, and a structure of a matched elastic assembly is different from that of the elastic assembly in the first embodiment, as shown in fig. 10-13, the linkage assembly 3 includes a holding member 31 and a linkage member 32, the holding member 31 is matched with a movable lock pin 4, the linkage member 32 is sleeved outside the holding member 31, the linkage member 32 is abutted against a shoulder of the holding member 31, and the holding member 31 is configured to drive the linkage member 32 to move when moving in a direction away from an inner cover 1 along a first direction; when the abutting member 31 moves towards the inner cap 1 along the first direction, the linkage member 32 and the abutting member 31 are separated and can move asynchronously, so that the abutting of the linkage member 32 and the inner cap 1 is facilitated.

The urea box cover 100 further comprises an elastic assembly 6, the elastic assembly 6 comprises a first elastic part 61 and a second elastic part 62, two ends of the first elastic part 61 are respectively abutted against the abutting part 31 and the inner cover 1, and the first elastic part is used for driving the abutting part 31 to move towards a direction away from the inner cover 1 along a first direction; both ends of the second elastic member 62 abut against the linkage 32 and the outer cap 2, respectively, for driving the linkage 32 to move toward the inner cap 1 along the first direction. The elastic force of the first elastic member 61 is greater than the elastic force of the second elastic member 62, so that the first elastic member 61 drives the linking member 32 to drive the abutting member 31 to move away from the inner cap 1.

Alternatively, the inner cap 1 is provided with internal threads to be screwed with external threads on the filling port 201, and the urea tank cap 100 is placed on the filling port 201 or removed from the filling port 201 by rotating the outer cap 2 when the inner cap 1 and the outer cap 2 are interlocked.

When the urea tank cover 100 is in the unlocked state:

when the lock 5 is in an unlocked state, the movable lock pin 4 is pulled out, the abutting piece 31 is forced to move downwards by the abutting action of the abutting part 42 of the movable lock pin 4, at this time, the first elastic piece 61 is compressed, after the abutting piece 31 moves downwards, a gap is formed between the abutting piece 31 and the linkage piece 32, the linkage piece 32 is forced to move downwards by the extrusion of the second elastic piece 62, and the second elastic piece 62 can meet two conditions in the downward moving process, namely: directly block on with joint portion 121 in the center seat 12, can realize the linkage at this time, the second: the linkage piece 32 hits the clamping portion 121 of the central seat 12 in the downward moving process, at this time, the linkage piece 32 cannot be clamped with the clamping portion 121, but the pulling-out of the movable lock pin 4 is not influenced completely, at this time, when the outer cover 2 is rotated, the linkage piece 32 is driven by the outer cover 2 to rotate together, the corresponding position can be found quickly, at this time, the linkage piece 32 is extruded downwards by the second elastic piece 62, and the linkage piece is clamped with the clamping portion 121 of the central seat 12, so that the linkage function is realized.

When the urea tank cover 100 is in the locked state:

the movable lock pin 4 is pressed in, the lock 5 is in a locked state, at this time, the movable lock pin 4 is arranged opposite to the linkage component 3 due to the avoidance groove 43, at this time, the first elastic piece 61 overcomes the reverse force of the second elastic piece 62, the abutting piece 31 moves upwards, as the shoulder of the abutting piece 31 abuts against the linkage piece 32, the linkage piece 32 is taken up when the abutting piece 31 moves upwards, the linkage piece 32 is separated from the clamping part 121, at this time, the outer cover 2 is rotated, the linkage piece 32 is driven to rotate together by the outer cover 2, but as the linkage piece 32 is not clamped with the clamping part 121, the inner cover 1 cannot rotate together, as the 360-degree rotation is carried out between the abutting piece 31 and the linkage piece 32, the abutting piece 31 cannot rotate together, at this time, only the outer cover 2 rotates together with the linkage piece 32, and the idle rotation state is achieved.

Example three:

as shown in fig. 14-17, the present embodiment further provides a urea tank cover 100, which is different from the urea tank cover in the first embodiment in that the inner cover and the outer cover are locked and unlocked, in the present embodiment, the urea tank cover 100 includes an inner cover 1 and an outer cover 2, the outer cover 2 covers the inner cover 1, the inner cover 1 is capable of rotating relative to the outer cover 2, a movable lock pin 4 is movably disposed on the outer cover 2 along the second direction, and the movable lock pin 4 is capable of moving between the first position and the second position along the second direction and is engaged with the inner cover 1 or disengaged from the inner cover 1, so that the inner cover 1 and the outer cover 2 are selectively linked. The urea box cover 100 further comprises a lock (not shown in the figure), the lock is arranged outside the outer cover 2, the outer cover 2 and the movable lock pin 4 can be locked or unlocked by the lock, the external lock with the urea box cover 100 is achieved, when the lock is damaged or a key is lost, the lock only needs to be replaced, the whole urea box cover 100 is prevented from being scrapped, and the cost is saved.

Optionally, the inner cap 1 is circumferentially provided with a plurality of positioning notches 13, the movable lock pin 4 moves towards the inner cap 1 along the second direction, when the movable lock pin 4 extends into the positioning notches 13, the inner cap 1 and the outer cap 2 can be linked, and when the movable lock pin 4 extends out of the positioning notches 13, the inner cap 1 and the outer cap 2 cannot be linked. In this embodiment, four positioning notches 13 are formed in the circumferential direction of the inner cap 1, so that the movable lock pin 4 can extend into the positioning notches 13 and be linked with the inner cap 1 when the inner cap 1 rotates by 90 degrees.

Specifically, be provided with the second accommodation space on enclosing cover 2, activity lockpin 4 sets up in the second accommodation space in enclosing cover 2 along the second direction activity to can selectively with the location breach 13 looks joint of inner cup 1 or break away from mutually with inner cup 1, the holding and the installation of linkage subassembly 3 and activity lockpin 4 are convenient for to this structure.

Optionally, one end of the outer cover 2 is provided with an insertion opening communicated with the second accommodating space, and the movable lock pin 4 is inserted into the outer cover 2 through the insertion opening.

Be provided with the third closure hole on enclosing cover 2, the one end of activity lockpin 4 is provided with the fourth closure hole, and when activity lockpin 4 was located the second position, the third closure hole was corresponding with the fourth closure hole, and the lock can pass third closure hole and fourth closure hole to with activity lockpin 4 and enclosing cover 2 locking, through the setting in third closure hole and fourth closure hole, be convenient for realize the locking and the unblock of activity lockpin 4 and enclosing cover 2 through the lock.

In order to avoid the lock to deviate from the outer cover 2, one side of the outer cover 2, which is provided with the insertion hole, is provided with a limiting part, and the limiting part is used for limiting the moving distance of the lock along the second direction. Specifically, the limiting part is a limiting groove arranged on the outer cover 2, the end part of the movable lock pin 4 is provided with a limiting part, the limiting part extends into the limiting groove and can move in the limiting groove, the moving distance of the movable lock pin 4 is limited by the length of the limiting groove, and the movable lock pin 4 can only move between a first position and a second position, wherein the first position is that the end part of the movable lock pin 4 extends out of the outer cover 2, and at the moment, the movable lock pin 4 is separated from the inner cover 1; the second position is that the movable lock pin 4 extends into the outer cover 2, and the movable lock pin 4 is clamped with the inner cover 1.

During installation, the urea box cover 100 is assembled, at the moment, the inner cover 1 and the movable lock pin 4 are not fixed with each other, and the inner cover 1 and the outer cover 2 are in a loose state and can rotate mutually; then the inner cover 1 is rotated to enable the movable lock pin 4 to extend into the positioning gap 13, the inner cover 1 is linked with the outer cover 2 through the movable lock pin 4, and then the third locking hole of the outer cover 2 is locked with the fourth locking hole of the movable lock pin 4 through a lock.

Optionally, a dust-proof member (not shown), in this embodiment a sponge, is disposed between the inner cap 1 and the outer cap 2 to prevent large particles of dust from entering the inner cap 1.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A urea tank cover, characterized by comprising:

an inner lid (1);

the outer cover (2) is covered on the inner cover (1), a linkage assembly (3) is movably arranged in the outer cover (2) along a first direction, a movable lock pin (4) is movably arranged on the outer cover (2) along a second direction, the movable lock pin (4) is configured to be capable of moving between a first position and a second position along the second direction and is matched with the linkage assembly (3), so that the linkage assembly (3) moves along the first direction and is clamped with the inner cover (1) or separated from the inner cover (1), and the inner cover (1) and the outer cover (2) are selectively linked; and

a lock (5) provided outside the outer cover (2), the lock (5) being configured to be able to lock or unlock the outer cover (2) and the movable lock pin (4).

2. The urea tank cover according to claim 1, further comprising:

an elastic assembly (6), wherein the elastic assembly (6) is configured to drive the linkage assembly (3) to reset so as to enable the linkage assembly (3) to be separated from the inner cover (1).

3. The urea tank cover according to claim 2, characterized in that the linkage assembly (3) is a unitary structure, and the elastic assembly (6) is disposed between the linkage assembly (3) and the inner cover (1) for moving the linkage assembly (3) in the first direction away from the inner cover (1).

4. The urea tank cover according to claim 1, characterized in that the linkage assembly (3) comprises:

the abutting piece (31) is matched with the movable lock pin (4); and

the linkage piece (32) is sleeved on the outer side of the abutting piece (31), the linkage piece (32) abuts against a shoulder of the abutting piece (31), and the abutting piece (31) is configured to drive the linkage piece (32) to move when moving towards the direction far away from the inner cover (1) along the first direction; can be separated from the linkage piece (32) when moving towards the inner cover (1) along the first direction.

5. The urea tank cover according to claim 4, characterized in that it further comprises a resilient assembly (6), the resilient assembly (6) comprising:

a first elastic member (61) having both ends respectively abutting against the abutting member (31) and the inner cap (1); and

and two ends of the second elastic piece (62) are respectively abutted against the linkage piece (32) and the outer cover (2), and the elastic force of the first elastic piece (61) is greater than that of the second elastic piece (62).

6. Urea tank cover according to any of claims 1-4, characterized in that the outer cover (2) comprises:

an outer cover main body (21); and

a locking part (22) connected with the outer cover main body (21) and communicated with the inside of the outer cover main body (21);

the linkage assembly (3) is movably arranged in the outer cover main body (21) along the first direction and can extend into the locking portion (22) from the outer cover main body (21), and the movable lock pin (4) is movably arranged in the locking portion (22) along the second direction and can selectively press the linkage assembly (3) so that the linkage assembly (3) is clamped with the inner cover (1) or separated from the inner cover (1).

7. Urea tank cover according to claim 6, characterized in that the movable latch (4) comprises:

the body (41) is movably arranged in the locking part (22) along the second direction, and one end of the body (41) is locked or unlocked with the outer cover (2) through the lock (5); and

the pressing part (42) is arranged at the other end of the body (41), and an avoiding groove (43) is arranged at the position where the pressing part (42) is connected with the body (41);

when the movable lock pin (4) is located at a first position, the pressing part (42) presses the linkage component (3) and enables the linkage component to move towards the inner cover (1) along the first direction, so that the linkage component (3) is clamped with the inner cover (1); when the movable lock pin (4) is located at the second position, the linkage component (3) extends into the avoidance groove (43), and the linkage component (3) is separated from the inner cover (1).

8. The urea tank cover according to claim 7, characterized in that the locking portion (22) is provided with a first locking hole (221), one end of the body (41) is provided with a second locking hole (411), when the movable lock pin (4) is located at the second position, the first locking hole (221) corresponds to the second locking hole (411), and the lock (5) can pass through the first locking hole (221) and the second locking hole (411) to lock the movable lock pin (4) and the outer cover (2).

9. The urea tank cover according to any one of claims 1-4, characterized in that the inner cover (1) comprises an inner cover main body (11) and a center seat (12) arranged in the inner cover main body (11), a clamping portion (121) is arranged in the center seat (12), and the linkage assembly (3) is arranged between the center seat (12) and the outer cover (2) and selectively clamped with the clamping portion (121).

10. A urea tank, characterized by comprising a tank body (200), said tank body (200) being provided with a filling opening (201), and a urea tank cover according to any one of claims 1-9, said urea tank cover being provided on said filling opening (201).

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