KR102059717B1 - Cover Structure of Urea Storage Tank - Google Patents

Abstract

The present invention is to be sealed while protecting the plug of the urea storage tank opening to fill the urea, to prevent rainwater or other foreign matter from penetrating into the urea storage tank, when flowing down during urea filling, penetrates into the surrounding structure The present invention relates to a urea storage tank cover structure which prevents corrosion from occurring and prevents the plug of the storage tank from freezing easily when frozen.
The present invention and the main body portion 10 is fixed to the upper portion of the urea storage tank (T); A cover 20 provided on the main body 10 so as to be openable and closeable; A hinge member 30 connected between the cover 20 and the inside of the main body 10 so as to open and close the cover 20; The cover 20 includes a locking member 40 mounted to the cover 20 so as to be opened and closed from the main body 10.

Description

Cover structure of urea storage tank

The present invention relates to a urea storage tank cover structure, and more particularly, to prevent rainwater or other foreign matter from penetrating into the urea storage tank by protecting the plug of the urea storage tank opening to fill the urea from the outside. When the urea flows down, it is prevented from penetrating into the surrounding structure to prevent corrosion, and even when freezing, the stopper of the storage tank is frozen so that it does not open well.

In general, a construction machine such as an excavator (or hydraulic excavator) includes a traveling body capable of traveling by a traveling motor, a swinging body disposed on the traveling body, and a work device mounted on the swinging body to perform excavation work on earth and sand. On the swinging body, the cab is located on one side in the width direction with the mounting portion of the work device interposed therebetween, and is located at the rear side of the cab to supply hydraulic oil of the traveling motor or the work device, and to operate the hydraulic pump. Equipped with an engine. The engine mounted on the construction machine is generally a diesel engine.

Recently, a urea SCR system is known as a system for reducing nitrogen oxides (NOx) in exhaust gas discharged from a diesel engine and purifying exhaust gas, and this SCR system is also applied to a diesel engine mounted on a construction machine.

The urea SCR system is a nitrogen oxide selective reduction catalyst system for selectively reducing nitrogen oxides in exhaust gas using an aqueous urea solution (hereinafter referred to as "urea") as a reducing agent, and a urea on the upstream side of the nitrogen oxide selective reduction catalyst device. The urea supply valve is provided in the urea injection valve for injecting the urea, the urea storage tank for storing urea, and the urea supply pipe connecting the urea storage tank and the urea injection valve and pumps the urea to the urea injection valve. have.

The conventional urea storage tank has a structure in which a main body portion having a space for storing urea and an openable stopper are coupled to an upper portion of the main body portion.

Conventional urea storage tanks having such a structure have a position away from the engine on the swinging structure, for example, a position opposite to the driver's seat between the driver's seats, mainly due to the prevention of overheating and ease of urea supply (charge) work. Can be placed in.

Also, in a cold region or the like, in order to prevent freezing of the urea flowing in the urea supply pipe or to thaw the frozen urea aqueous solution, a coolant pipe for circulating the coolant of the engine so that the urea can be heated by the coolant heat of the engine is urea supply pipe. Communication is being carried out.

Conventional urea storage tank has a single storage space, and has a structure that is coupled to the opening and closing stopper on the top and exposed to the outside, particularly when working on construction machinery, the plug portion may be damaged by collision, In addition, when the urea is injected into the storage tank, the urea may penetrate into the surrounding structure and cause corrosion.

Moreover, since the plug of the urea storage tank is provided in the state exposed outside, the possibility of rainwater or foreign matter penetrating increases.

In addition, in the cold winter, the heat retention is not properly achieved, so that the urea in the storage tank can be easily frozen, and a structure for preventing freezing is provided. The plug of the urea storage tank is exposed as it is in winter, so that the urea can be charged. If you want to open the stopper, there is a problem uncomfortable to freeze open well.

In addition, since the plug of the urea storage tank is not protected from an external shock, when the plug is damaged by an external shock, the plug may be separated from the urea storage tank.

Republic of Korea Patent Publication No. 10-2014-105220 (published: September 01, 2014)

Accordingly, the present invention has been invented to solve the conventional problems as described above, the problem to be solved by the present invention is to seal while closing the plug of the urea storage tank to open for filling the urea, rain water or other foreign matter is Prevents penetration into the urea storage tank, prevents corrosion from penetrating into the surrounding structure when flowing down during urea filling, and prevents the storage tank from freezing and opening easily even during freezing. It is to provide a cover structure of a urea storage tank.

Solution to Problem The present invention for solving the above problems, the main body portion fixed to the upper portion of the urea storage tank; A cover provided to open and close the main body; A hinge member connected between the cover and the inside of the main body so as to open and close the cover; It includes a locking member mounted to the cover to open and close the cover from the main body.

In addition, the main body portion may have a structure in which a receiving hole for inserting and supporting a stopper formed at an upper portion of the urea storage tank is formed.

The hinge member may include a bracket coupled to and fixed to an inner surface of the cover, and a plurality of link members symmetrically formed at both sides of the bracket to be folded and unfolded while being coupled to the bracket.

The link member may include a first link coupled to both inner surfaces of the bracket, a second link rotatably coupled to one end of the first link while being disposed inside the first link, and a second link; A third link rotatably coupled to one end of the link, a fourth link rotatably coupled to one end of the first link while being located outside the third link, and rotatably connected to one end of the fourth link; A fifth link to be coupled, an extension piece bent in different directions to one end of the third link, and a fixing bracket fixed to an inner surface of the main body while being rotatably coupled to one end of the extension piece, It may be composed of a sixth link rotatably coupled to one end of the fifth link.

The hinge pin may be rotatably coupled to a portion of the third link and the fourth link.

In addition, a stopper may be fixed to a lower inner surface of the one third link to stop the cover in an open state.

The stopper may further include a locking pin, a mounting bracket for inserting the locking pin to be slidably supported, a pressure plate formed to be fixed to an outer circumferential surface of the locking pin, and a pressure plate coupled to the outer circumferential surface of the locking pin. It may include an elastic member that is supported between the mounting bracket to press and release the locking pin to return to the original position.

In addition, the stopper pin of the stopper is formed in the handle portion to be located outside of the mounting bracket to be gripped, and the fourth link located outside the third link through the mounting bracket and the third link from the handle portion. It may be made of a stem portion to be inserted into the insertion groove is made.

The locking member may include a housing constituting an outer surface, an operation member protruding from the front surface of the housing and moving left and right and locking and releasing the cover, and a movable operation member on an inner surface of the housing. A locking member provided to move together, an operation plate formed to move together with the movement of the operation member inside the locking member, and a locking member inserted into one end of the operation plate to move according to the movement of the operation panel. It may include a protrusion formed to move the locking member at the same time, and a key lock plate is inserted into the locking member to move up, down and lock and release.

In addition, the front end portion of the locking member may be formed to protrude from the striker fixed to the inner side of the main body and the locking piece to be unlocked while entering the opening of the housing.

In addition, the lower portion of the locking piece may be formed inclined surface inclined in one direction.

In addition, elastic members may be supported on the rear ends of the locking member and the operation panel, respectively.

In addition, a locking groove for inserting a protrusion protruding from the upper surface of the lock plate may be formed in the operation panel and the inner surface of the housing to communicate with each other.

In addition, the lower portion of the insertion groove of the operation plate is a structure in which the fixing projections to stop by limiting the movement distance when the key lock plate moves downward.

In addition, a key operating member that is rotatably coupled by inserting and operating a key is formed in the operating member, and a key lock plate such that a key lock plate is moved up and down on a key operating plate formed at an end of the key operating member. The eccentric protrusions inserted into the long holes formed in the eccentric protrusions may be formed to protrude eccentrically.

As described above, the present invention is a cover structure of a urea storage tank for storing urea, which is a reducing agent used to reduce nitrogen oxides in exhaust gas, and the urea storage tank cover structure is mounted on the upper surface of the urea storage tank. The cap is not exposed to the outside to prevent rainwater or foreign matter from penetrating into the urea storage tank.

In addition, the present invention, even if the urea flows to the periphery due to inadvertent charging of the urea into the interior of the urea storage tank, because it does not penetrate into the other peripheral structure from the inside of the main body portion, because the urea penetrates into the peripheral structure and corrosion, etc. The phenomenon that occurs can be prevented.

In addition, the present invention can automatically maintain the open state of the cover by the stopper after the opening of the cover, the urea filling operation can be made smoothly because the open cover does not swing during the urea filling operation into the urea storage tank.

In addition, when the cover is closed, the automatic stop state of the stopper is manually released and when the cover is slightly closed and the stopper is placed again, the stopper is pushed back by the striker and moved to the lower position automatically when the stopper is made. As such, the closing operation of the cover can be easily achieved by that much.

1 is a perspective view of the installation state of the urea storage tank cover structure according to an embodiment of the present invention.
FIG. 2A is a perspective view of the cover opened in FIG. 1; FIG.
2B is an enlarged view of a portion A of FIG. 2A.
Figure 3a is a perspective view of the hinge member constituting the urea storage tank cover structure according to an embodiment of the present invention.
3B is a partially exploded perspective view of FIG. 3A.
4 is an enlarged perspective view of portion B of FIG. 3A.
5 is a perspective view showing the arrangement of the locking member and the striker of the urea storage tank cover structure according to an embodiment of the present invention.
6 is a view showing the inside of the rear of the locking member of the urea storage tank cover structure according to an embodiment of the present invention.
7 is a perspective view of the locking member of the urea storage tank cover structure according to an embodiment of the present invention.
8A is a view of a state in which the locking member is removed in FIG. 6.
FIG. 8B is a view illustrating a state in which the key lock plate is lowered and the lock is released in the state of FIG. 8A.
9a and 9b are perspective views showing the position of the hinge member of the urea storage tank cover structure according to the opening and closing operation of the cover according to an embodiment of the present invention, Figure 9a is the arrangement of the hinge member when the cover is closed 9B is a perspective view showing the arrangement of the hinge member when the cover is opened.
10A through 10D are diagrams illustrating a step of releasing a locking member in a process of opening a cover in a closed state in a urea storage tank cover structure according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, specific details for carrying out the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of the installation state of the urea storage tank cover structure according to an embodiment of the present invention, Figure 2a is a perspective view of the cover in the open state in FIG.

As shown in the figure, the urea storage tank cover structure 1 according to an embodiment of the present invention, the main body portion 10 is fixed to the upper portion of the urea storage tank (T), the main body portion 10 It is configured to include a cover 20 provided to be openable.

The body portion 10 may be formed in a predetermined standard, may be formed in a rectangular cylindrical shape, the rear surface may have an open structure, the inside of the body portion 10 in the upper portion of the urea storage tank (T) It has a structure in which the receiving hole 11 is formed so that the stopper (T1) is formed is supported.

The receiving port 11 may have a structure in which a circumferential wall is formed at a predetermined height to have a receiving space.

In addition, a predetermined space is formed at the upper end of the receiving tool 11 so that the hinge member 30 to be described later can be rotated during the opening and closing operation of the cover 20 without interference.

 The injection hole portion in which the stopper T1 of the urea storage tank T is provided is inserted into the receiving port 11 through the bottom surface and protrudes as shown in FIG. 2B, and is securely inserted in the inserted state. Support and tight contact.

In addition, the body portion 10 may be fixedly coupled through a fastening member such as a bolt to be disassembled and assembled on the upper surface of the urea storage tank (T). In this embodiment, the back of the body portion 10 is made of a structure that is fixed by fastening with a bolt.

In addition, the cover 20 is provided to be opened and closed in the opening (10a) of the main body portion 10, has a bent structure (A-shaped), the inner surface of the cover 20 is coupled to the main body portion 10 While having a hinge member 30 that is rotatably coupled so that the opening and closing operation of the cover 20 is made.

The cover 20 may be provided with a sealing member (for example, rubber packing) to be sealed to the opening 10a of the body portion 10 in a closed state on the body portion 10.

In addition, the cover 20 has a structure that is provided with a locking member 40 to enable locking and unlocking from the body portion 10.

The hinge member 30 has a plurality of brackets symmetrically formed on both sides of the bracket 31 to be folded and unfolded while being coupled to the bracket 31 and coupled to the inner surface of the cover 20. It consists of the link members (32).

As shown in FIG. 3A, the link member 32 may include a first link 32a coupled to and fixed to both inner surfaces of the bracket 31, and disposed inside the first link 32a. A second link 32b rotatably coupled to one end of one link 32a, a third link 32c rotatably coupled to one end of the second link 32b, and a third link 32c. And a fourth link 32d rotatably coupled to one end of the first link 32a and a fifth link 32e rotatably coupled to one end of the fourth link 32d. And an extension piece 32f bent in one end of the third link 32c in different directions and a sixth link 32g rotatably coupled to one end of the extension piece 32f.

The fourth link 32d is smoothly operated even when it is in contact with the engaging piece 14 provided on the inner side of the main body 10 when the link member 32 is expanded and folded during the opening and closing operation of the cover 20. It may be formed as a convex curved portion on the rear side.

In addition, the sixth link 32g may be fixedly coupled to the fixing bracket 14 fixed to the inner surface of the main body 10, and may be rotatably coupled to one end of the fifth link 32e. Has

In addition, a stopper 50, which will be described later, is fixed to a lower inner surface of one of the third links 32c of the pair of third links 32c, as shown in FIG. The stem portion 51b constituting the engaging pin 51 of the penetrating penetrates into the insertion groove 32d-1 formed in the fourth link 32d positioned outside the third link 32c, and the lock is made. Can be lost.

In addition, the first side rail 33 is rotatably coupled between the second link member 32b, the second side rail 34 to maintain the gap between the fourth link (32d). ) Is rotatably coupled.

In addition, the third link 32c and the fourth link 32d may be coupled to a hinge pin 32d-2 to be rotatable at a position.

In addition, as described above, when the link member 32 is unfolded by the opening operation of the cover 20 at one inner side of the pair of link members 32 provided symmetrically with each other, the cover 20 is opened. A stopper 50 may be provided to maintain the state. As shown in FIG. 4, the stopper 50 includes a locking pin 51 and a mounting bracket for inserting and supporting the locking pin 51. 52, the pressing plate 53 is formed to be fixed to the outer peripheral surface of the locking pin 51, while being coupled between the pressing plate 53 and the mounting bracket 52 while being coupled to the outer peripheral surface of the locking pin 51 When the locking pin 51 is pressed and released, it is configured to include an elastic member 54 to return to the original position.

In addition, the locking member 40, as shown in Figure 5 or 7, may be mounted to the cover 20 in a modular structure in the form of a casing, the housing 40a forming the outer surface is formed The front surface of the housing 40a is provided with a protruding operation member 41, and the operation member 41 is movable to the left and right to lock and release the cover 20.

The housing 40a may be mounted on the front inner surface of the cover 20 such that the operation member 41 protruding from the front side is seen when viewed from the front of the cover 20.

In addition, as shown in FIG. 6, when the rear plate of the housing 40a is removed, a locking member 43 to be described later and an operation plate 41a positioned inside the locking member 43 are provided therein. Has a structure.

In other words, the locking member 43 and the operation plate 41a are inserted into the housing 40a.

On one side of the operation member 41 protruding out of the front surface of the housing 40a, the fixing piece 42 is fixedly formed to protrude out of the cover 20 while being spaced apart from the housing 20 at intervals. Has a structure. Therefore, when the operation member 41 catches the fixing piece 42 on one side and moves in the direction of the fixing piece 42, the locking state of the cover 20 can be easily released.

In addition, the inner surface of the housing (40a) has a structure that is provided with a locking member 43 to move together by the movable operation member (41).

The locking member 43 has a plate-like structure having a predetermined area, and a locking piece 43a is formed at the tip, and the locking piece 43a has a structure in which an inclined surface 43b is formed.

The locking piece 43a has a structure in which an opening 40a-2 is formed at the front end of the housing 40a so as to be exposed toward the front end of the housing 40a.

In addition, the rear end portion of the locking member 43 has a structure in which the elastic member 44 is supported.

The elastic member 44 may be a coil spring, it may be provided with one or more to be carried.

In addition, an operation plate 41a having a plate-like structure for moving together in accordance with the movement of the operation member 41 of the protruding structure is formed inside the locking member 43, and one end of the operation plate 41a is formed. Protruding portion 41b is formed at the side, and the key lock plate 45 which is movable up and down is provided at a substantially center position.

As shown in FIG. 6, the protrusion 41b is fitted to the upper side of the locking member 43 so that the locking member 43 also moves simultaneously when the operation member 41 is laterally moved to release the lock. 5, the latch may be released from the striker 12.

As shown in FIG. 8A, the inner surface of the operation plate 41a and the housing 40a is inserted into a protrusion 45a protruding from the upper surface of the key lock plate 45 to be engaged. The grooves 41a-1 and 40a-1 are formed in communication with each other.

As shown in FIG. 8B, the key lock plate 45 may be provided to move up and down in the insertion groove 41a-2 formed in the operation panel 41a, and the operation panel 41a. Fixing protrusion (41a-3) is formed in the lower portion of the insertion groove (41a-2) of the key lock plate 45 when moving the lower limit to the movement distance to be surely stopped.

In addition, the locking groove 41a-1 formed in the upper portion of the operation plate 41a is formed in communication with the insertion groove 41a-2, and the protrusion 45a of the key lock plate 45 is drawn in and out. It can be made to move smoothly.

In addition, at least one elastic member 41c is supported at the rear end of the operation panel 41a, and as shown in FIG. 6, the elastic member 41c is supported at the front of the elastic member 41c. The support plate 41d can be assembled to hold.

7, 8a and 8b, the operation member 41 is rotatably coupled in a fixed state by inserting a key into the operation member 41 to operate (rotate). A key operating member 46 is formed, and an eccentric protrusion 46b is eccentrically protruded from an end of the key operating member 46, that is, the key operating plate 46a formed on the inner surface of the housing 40a. The key lock plate 45 has a structure in which a long hole 45b into which the eccentric protrusion 46b is inserted to move up and down according to the eccentric movement of the eccentric protrusion 46b is formed.

Further, the locking piece 43a is hung on the lower part of the striker 12 formed inside the main body 10, and simultaneously moves in accordance with the lateral movement of the operation member 41 to move from the striker 12. The locking state is released so that the cover 20 is opened upward from the main body 10.

As shown in FIG. 2B, the striker 12 may be fixed by the fixing member 13, and the fixing member 13 may be bent and fixed to the inner surface of the main body 10.

In other words, the housing 40a is provided with all the configurations of the locking member 40 to be one modular.

In addition, as shown in FIG. 4, the locking pin 51 constituting the stopper 50 includes a handle portion 51a disposed outside the mounting bracket 52 and a predetermined portion from the handle portion 51a. It has a length of the structure consisting of a stem portion 51b penetrating the mounting bracket 52, the pressing plate 53 is fixed to the stem portion 51b, the structure in which the elastic member 54 is supported Has

In one embodiment of the present invention, the handle 51a of the locking pin 51 may be formed in a circular shape, but is not limited thereto and may be formed in various shapes that are easy to grip.

The mounting bracket 52 is bent to have a substantially inverted U-shape, and includes a horizontal portion 52a and a vertical portion 52b formed and supported to both sides of the horizontal portion 52a by a predetermined length. In addition, the mounting bracket 52 may be provided so that the stem 51b of the locking pin 51 may slide through the horizontal portion 52a.

In addition, the pressing plate 53 may be fixedly coupled to the stem portion 51b constituting the engaging pin 51, but is inserted into the stem portion 51b for convenience of assembly, and one side of the stem portion 51b. The fixing plate 55 may be coupled to the pressing plate 53 to be supported.

The elastic member 54 is inserted into the outer circumferential surface of the stem portion 51b of the locking pin 51 and may be provided as a coil spring.

According to one embodiment of the present invention having such a configuration, as shown in Figure 1, the urea storage tank cover structure (1) is provided on the top of the urea storage tank (T) of the plug of the urea storage tank (T) ( Protects T1).

If, in order to fill the urea in the urea storage tank (T), first to open the cover 20 provided in the main body 10 constituting the urea storage tank cover structure (1), for opening the cover 20 When the key formed in the operation member 41 forming the locking member 40 formed on the outer surface of the cover 20 is inserted into the operation member 46 and turned in one direction, the operation member 41 is locked so as to be movable horizontally. The state is released.

In other words, as shown in FIGS. 8A and 8B, the key operating plate 46a integrally connected to the key operating member 46 is provided inside the key operating member 46, that is, inside the housing 40a. Since the eccentric protrusion 46b is eccentrically formed in the key operation panel 46a, when the key operation member 46 is rotated in one direction through the key, the key operation panel 46a is also rotated at the same time. The eccentric protrusion 46b is moved.

At this time, the eccentric protrusion 46b is inserted into the long hole 45b of the key lock plate 45. As shown in FIG. 8B, when the eccentric protrusion 46b rotates in the circumferential direction and moves downward, The key lock plate 45 is also lowered at the same time.

Then, the projection 45a of the key lock plate 45 is displaced from the locking groove 41a-1 formed on the upper portion of the operation panel 41a and the locking groove 40a-1 formed on the rear surface of the housing 40a. Will be in. Then, the operation member 41 of the locking member 40 is in a state capable of moving in the lateral direction.

When the operation member 41 is pushed toward the stationary piece 42 in a state in which the basic locking state by the key is released, the operation plate 41a and the key lock plate 45 simultaneously move laterally.

At this time, the elastic member 41c is supported on the rear end of the operation panel 41a, and the operation panel 41a moves while compressing the elastic member 41c.

Then, as shown in Figure 6, while the projection 41b formed on one side of the operation panel 41a is also moved at the same time, the locking member 43 provided in front of the operation panel 41a is moved in the lateral direction. .

The elastic member 44 is supported on the rear end of the locking member 43, and the elastic member 44 is moved while compressing the elastic member 44 when the locking member 43 moves.

A catching piece 43a is formed at the front end of the catching member 43. The catching piece 43a is located at a lower part of the striker 12 provided inside one of the main body parts 10, so that the catching member 43a is in a state of being caught. While the locking piece 43a moves at the same time as the locking member 43 moves in the lateral direction, the locking piece 43a is released from the striker 12 while the cover 20 is removed from the main body 10. It can be opened.

Of course, when the operation member 41 that has been moved in one direction is released, the operation member 41, the operation plate 41a, and the locking member 43 are simultaneously operated by the repulsive force of the elastic members 41c and 44 that have been compressed. Returning to the position of, the locking piece 43a is again exposed from the housing 40a.

The cover 20 is opened according to the release operation of the locking member 40. Both sides of the cover 20 are provided with hinge members 30 which are symmetrical with each other, so that the hinge member 30 moves and the cover ( 20) opening operation is performed.

That is, the hinge member 30 is provided with a link member 32, as shown in Figure 9a and 9b, when the cover 20 is open, the bracket 31 is provided on the inner surface of the cover 20 When the cover 20 is lifted upward from the main body 10 during the opening operation of the cover 20, the bracket 31 is also simultaneously lifted, thereby being coupled to the bracket 31. The links 32a to 6th link 32g are folded and spread out.

At this time, the insertion groove (32d-1) is formed in the fourth link (32d) of the link member 32, the locking pin 51 of the stopper (50) provided in the lower inner surface of one of the fifth link (32f) While the elastic member 54 located inside the mounting bracket 52 is in a compressed state, the insertion groove 32d is formed by the repulsive force of the elastic member 54 that is compressed while the fourth link 32d is unfolded. The locking pin 51 is automatically inserted into the -1), and the locking pin 51 is automatically inserted. Accordingly, the cover 20 is maintained in an open state (90 degrees from the upper surface of the main body 10).

As described above, the urea storage tank cover structure 1 according to the exemplary embodiment of the present invention opens the stopper T1 of the urea storage tank T in a state where the cover 20 is opened from the main body 10, and urea. After charging, the lid T1 is again locked and the cover 20 is closed.

The cover 20 is maintained in a fixed state by the stopper 50 in the open state, so that the cover 20 does not swing during the urea filling operation into the urea storage tank T to smoothly perform the urea filling operation. It can be.

On the other hand, in order to close the opened cover 20 again, the locking pin 51 of the stopper 50 is first removed from the insertion groove 32d-1 of the fourth link 32d, and then closed. When the handle portion 51a, which is an end of the locking pin 51, is grasped and pulled out, the stem portion 51b formed integrally with the handle portion 51a is pulled out.

The pressing plate 53 is fixed to the stem 51b, and as the stem 51b is pulled, the pressing plate 53 compresses the elastic member 54 inserted into the outer circumferential surface of the stem 51b. The mounting bracket 52 is moved to the outside.

Accordingly, the end portion of the stem portion 51b is deviated from the insertion groove 32d-1 of the fourth link 32d, and when the cover 20 is slightly closed, the link member 32 is folded. The position of the fourth link 32d is also changed. Then, when the handle portion 51a of the stopper 50 that is pulled is released, the pressing plate 53 is pushed by the repulsive force of the compressed elastic member 54 and the stem is pushed. Even if the portion 51b moves toward the fourth link 32d, the position of the insertion groove 32d-1 is changed, so that insertion and latching are not performed.

In this state, when the cover 20 is continuously closed, the exposed locking pieces 43a meet the striker 12 provided on one inner side of the main body 10.

The locking piece 43a formed at the front end of the locking member 43 has an inclined surface 43b having a lower surface inclined in one direction, so that the cover 20 is in contact with the striker 12. If it continues to close, the engaging piece (43a) is pushed automatically into the interior of the housing (40a), accordingly the cover 20 is continuously closed, the position is located on the lower surface of the striker 12 In this case, the locking piece 43a, which has been pushed back by the repulsive force of the elastic member 44, returns and the closing operation of the cover 20 is completed while the locking piece 43a is caught on the lower surface of the striker 12.

According to one embodiment of the invention, since the urea storage tank cover structure (1) is mounted on the upper surface of the urea storage tank (T), the stopper (T1) of the urea storage tank (T) is not exposed to the outside urea Rainwater or foreign matter can be prevented from entering the storage tank (T).

In addition, even when urea flows around due to inadvertent filling of urea into the urea storage tank T, the urea penetrates into the surrounding structure because the urea is blocked without penetrating into other surrounding structures inside the main body 10. Therefore, the phenomenon of corrosion or the like can be prevented.

In addition, according to an embodiment of the present invention, the opening of the cover 20 can be automatically maintained by the stopper 50 after the opening of the cover 20, so that during the urea filling operation into the urea storage tank (T) Open cover 20 is not swinging can be made smoothly urea filling operation.

In addition, when closing the cover 20, the self-locking state of the stopper 50 is released (pull the handle portion 51a manually), and the cover 20 is slightly closed and the stopper 50 is placed again to close the locking piece. When the 43a moves downward while being pushed by the striker 12, the latching state is automatically made in the original position, and thus the closing operation of the cover 20 can be easily performed.

In addition, the locking member 40 is formed to have a small thickness to protrude to the inner surface of the cover 20 has a slim thickness, and the locking and releasing operation in the lateral direction, so that the plug of the urea storage tank (T) ( Even if the distance from T1) is narrow, installation and operation (locking and releasing operation) can be performed without sufficient interference.

In the above, specific embodiments of the present invention shown in the accompanying drawings have been described in detail, but these are merely illustrative of the preferred embodiments of the present invention, and the scope of protection of the present invention is not limited thereto. In addition, the embodiments of the present invention as described above can be variously modified and equivalent other embodiments by those of ordinary skill in the art within the technical spirit of the present invention, such modifications and equivalent other embodiments are It belongs to the appended claims of the invention.

1: Urea storage tank cover structure
10: main body
10a: opening
11: receiving mouth
12: striker
13: fixing member
14: combined piece
20: cover
21: hanging groove
30: hinge member
31: bracket
32: link member
32a: first link
32b: second link
32c: third link
32d: fourth link
32d-1: Insertion groove
32d-2: Hinge pin
32e: 5th link
32f: Extension
32g: 6th Link
33: 1st street stand
34: second street stand
40: locking member
40a: housing
40a-1: Hanging groove
40a-2: opening
41: operation member
41a: Operation Panel
41a-1: Hanging groove
41a-2: Insertion groove
41a-3: Fixing protrusion
41b: protrusion
41c: elastic member
41d: support plate
42: fixing piece
43: locking member
43a: hanging piece
43b: slope
44: elastic member
45: key lock plate
45b: longevity
46: key operation member
46a: key operation panel
46b: eccentric protrusion
50: stopper
51: locking pin
51a: handle portion
51b stem portion
52: mounting bracket
52a: horizontal section
52b: vertical section
53: pressure plate
54: elastic member
55: fixed pin
T: Urea Storage Tank
T1: stopper

Claims (15)

A main body portion 10 fixed to an upper portion of the urea storage tank T;
A cover 20 provided on the main body 10 so as to be openable and closeable;
A hinge member 30 connected between the cover 20 and the inside of the main body 10 so as to open and close the cover 20;
A locking member 40 mounted to the cover 20 to open and close the cover 20 from the main body 10; Including;
The hinge member 30 may include a bracket 31 coupled to an inner surface of the cover 20, a first link 32a coupled to and fixed to both inner surfaces of the bracket 31, and the first link. A second link 32b rotatably coupled to one end of the 32a, a third link 32c rotatably coupled to one end of the second link 32b, and the first link 32a. A fourth link 32d rotatably coupled to one end of the fourth link; a fifth link 32e rotatably coupled to one end of the fourth link 32d; and one end of the third link 32c. It is coupled and fixed to the extension piece (32f) is bent in different directions to, and the fixing bracket 14 is fixed to the inner surface of the main body portion 10 while being rotatably coupled to one end of the extension piece (32f) Cover structure of the urea storage tank, characterized in that consisting of a sixth link (32g) rotatably coupled to one end of the fifth link (32e) . The method according to claim 1,
The cover structure of the urea storage tank, characterized in that the receiving opening (11) is formed in the main body portion 10, the stopper (T1) formed in the upper portion of the urea storage tank (T) is inserted and supported. delete delete The method according to claim 1,
Cover structure of the urea storage tank, characterized in that coupled to the hinge pin (32d-2) rotatably at a position of the third link (32c) and the fourth link (32d). The method according to claim 1,
The cover structure of the urea storage tank, characterized in that the stopper 50 is fixed to the lower inner surface of the third link (32c) to stop the cover 20 to maintain the open state. The method according to claim 6,
The stopper 50,
A locking pin 51, a mounting bracket 52 for inserting the locking pin 51 to be slidably supported, a pressure plate 53 fixed to an outer circumferential surface of the locking pin 51, and It is characterized in that it comprises an elastic member 54 coupled to the outer circumferential surface of the locking pin 51 while being pressed between the pressure plate 53 and the mounting bracket 52 so as to press and release the locking pin 51 to return to its original position. Cover structure of urea storage tank. The method according to claim 7,
The locking pin 51 of the stopper 50,
A handle portion 51a positioned outside the mounting bracket 52 to be gripped, and penetrating the mounting bracket 52 and the third link 32c from the handle portion 51a to Cover structure of the urea storage tank, characterized in that consisting of a stem portion (51b) is inserted into the insertion groove (32d-1) formed in the fourth link (32d) located on the outside to engage the. The method according to claim 1,
The locking member 40,
A housing 40a constituting an outer surface, an operation member 41 protruding from the front surface of the housing 40a, movable left and right, and enabling locking and unlocking of the cover 20, and an inside of the housing 40a. The engaging member 43 provided to move together by the movable operation member 41 on the surface, and the operation plate formed to move together in accordance with the movement of the operating member 41 inside the locking member 43 41a and a protrusion 41b which is inserted into the locking member 43 at one end of the operation plate 41a and is formed to be movable at the same time as the operation plate 41a moves. The cover structure of the urea storage tank, characterized in that it comprises a key lock plate (45) is inserted into the locking member 43, the key lock plate (45) is provided so that the locking and release is possible. The method according to claim 9,
The striker 12 fixed to the inner side of the main body 10 and the locking piece 43a for unlocking protrude from the front end of the locking member 43 while entering and exiting the opening 10a of the housing 40a. Cover structure of the urea storage tank, characterized in that formed. The method according to claim 10,
The lower portion of the engaging piece (43a) is a cover structure of the urea storage tank, characterized in that the inclined surface (43b) inclined in one direction. The method according to claim 9,
The cover member of the urea storage tank, characterized in that the elastic member 44, 41c is carried on the rear end of the engaging member 43 and the operation plate 41a, respectively. The method according to claim 9,
Locking grooves 41a-1 and 40a- which are inserted into protrusions 45a protruding from the upper surface of the key lock plate 45 to be inserted into the operation panel 41a and the housing 40a. Cover structure of the urea storage tank, characterized in that 1) is formed in communication. The method according to claim 13,
The urea storage, characterized in that the fixing projection (41a-3) is formed to protrude from the lower portion of the insertion groove (41a-2) of the operation panel 41 to stop the movement distance when the key lock plate 45 moves downward Cover structure of the tank. The method according to claim 9,
In the operating member 41, a key operating member 46 is rotatably coupled by inserting and operating a key, and a key lock is formed on the key operating plate 46a formed at an end of the key operating member 46. The urea storage tank, characterized in that the eccentric protrusion (46b) is inserted into the long hole (45b) formed in the key lock plate 45 so that the plate 45 is moved up, down and eccentrically protruded Cover structure.

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