KR20170114325A - Cover Structure of Urea Storage Tank - Google Patents

Abstract

The present invention prevents the penetration of rainwater or other foreign matter into the urea storage tank by sealing the cap of the urea storage tank which is opened to fill the urea, thereby allowing the rainwater or other foreign matter to penetrate into the urea storage tank, Preventing the occurrence of corrosion and preventing a phenomenon in which the cap of the storage tank is frozen easily so that it is not opened easily even when it is frozen.
The present invention relates to a urea storage tank (T), comprising: a main body part (10) fixed to an upper part of a urea storage tank (T); A cover 20 provided on the main body 10 to be openable and closable; 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; And a locking member 40 mounted on the cover 20 such that the cover 20 is opened and closed from the main body 10. [

Description

Technical Field [0001] The present invention relates to a Urea storage tank cover structure,

The present invention relates to a urea storage tank cover structure, and more particularly, to a structure for protecting a cap of a urea storage tank, which is opened for filling a urea, with sealing from outside, thereby preventing rainwater or other foreign matter from penetrating into the urea storage tank In case of flowing down during urea filling, it prevents penetration into peripheral structure to prevent corrosion, and it is possible to prevent the phenomenon that the cap of the storage tank is frozen easily when it is frozen even when freezing.

2. Description of the Related Art Generally, a construction machine such as an excavator (or a hydraulic excavator) includes a traveling body capable of traveling by a traveling motor, a rotating body disposed on the traveling body, and a working device mounted on the rotating body for performing excavation work A hydraulic pump which is located on one side of the swivel body in the width direction with the mounting portion of the working device interposed therebetween and which has a cab and which is located at the rear side of the cab and supplies the driving oil of the traveling motor or the working device; It has an engine. Diesel engines are commonly used in construction machinery.

BACKGROUND ART [0002] A urea SCR system is known as a system for reducing nitrogen oxides (NOx) in an exhaust gas discharged from a diesel engine in recent years and purifying the exhaust gas. Such an SCR system is also applied to a diesel engine mounted on a construction machine.

The urea SCR system is a nitrogen oxide selective catalytic reduction system for selectively reducing nitrogen oxides in an exhaust gas by using an urea aqueous solution (hereinafter referred to as "urea") as a reducing agent. The urea SCR system comprises a urea And a urea supply device which is provided in a urea supply pipe for connecting the urea storage tank and the urea injection valve to supply the urea to the urea injection valve have.

The conventional urea storage tank has a body portion having a space capable of storing urea and a structure in which an opening / closing cap is coupled to the upper portion of the body portion.

The conventional urea storage tank having such a structure is disposed at a position away from the engine on the swivel body, for example, at a position opposite to the driver's seat with the mounting portion of the working device therebetween, As shown in FIG.

In cooling cold water or the like, a cooling water pipe that circulates the cooling water of the engine so that urea flowing through the urea supply pipe can be frozen or the urea can be warmed by the cooling water heat of the engine is thrown into the urea supply pipe In the case of the present invention.

The conventional urea storage tank has a storage space and has a structure in which an openable and closable cap is coupled to the upper portion and is exposed to the outside. In particular, when the construction machine is in operation, the cap portion may be damaged by impact, In addition, when the urea is poured into the storage tank, the urea is poured into the surrounding structure and corrosion may occur.

Further, since the cap of the urea storage tank is provided in the state exposed to the outside, the possibility that rainwater or foreign matter penetrates is increased.

In addition, since the urea storage tank can be easily frozen in the cold winter season, the structure for preventing freezing can be easily frozen. Since the cap of the urea storage tank is exposed in the winter season, If the cap is to be opened, there is a problem that it is frozen and is not opened properly and inconvenient.

Further, since the cap of the urea storage tank is not protected from external impact, if the cap is damaged by external impact, the cap may be separated from the urea storage tank.

Korean Patent Publication No. 10-2014-105220 (Published on September 01, 2014)

Accordingly, it is an object of the present invention to provide a method of sealing a urea storage tank by sealing a cap of a urea storage tank which is opened to fill a urea, thereby preventing rainwater or other foreign matter In order to prevent penetration into the urea storage tank and to prevent the corrosion from penetrating into the surrounding structure when flowing down during urea filling and to prevent the opening of the storage tank by freezing easily, To provide a cover structure for a urea storage tank.

According to an aspect of the present invention, there is provided a method of manufacturing an urea storage tank, comprising: a main body fixed to an upper portion of a urea storage tank; A cover which is openably and closably provided on 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; And a lock member mounted on the cover such that the cover is opened and closed from the main body portion.

In addition, in the inside of the main body, a receptacle formed in an upper portion of the urea storage tank may be inserted and supported.

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

The link member may include a first link coupled to both side inner surfaces of the bracket, a second link rotatably coupled to one end of the first link while being disposed inside the first link, A third link rotatably coupled to one end of the link, a fourth link rotatably coupled to one end of the first link, the fourth link being located outside the third link, and a second link rotatably connected to one end of the fourth link, And a fixing bracket fixed to the inner surface of the main body and rotatably coupled to one end of the elongate member, And a sixth link rotatably coupled to one end of the fifth link.

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

In addition, a stopper for stopping the cover to be opened can be fixed to a lower inner surface of the third link.

The stopper may include a latching pin, a mounting bracket to which the latching pin is inserted so as to be slidably supported, a pressing plate fixed to the outer circumferential surface of the latching pin, and a pressing plate coupled to the outer circumferential surface of the latching pin, And an elastic member that is elastically biased between the mounting brackets to return to the original position by pressing and releasing the latching pin.

The latching pin of the stopper is formed on a fourth link located outside the third link through the mounting bracket and the third link from the handle portion so that the latching pin of the stopper is located outside the mounting bracket and can be gripped. And a stem portion inserted and inserted into the insertion groove.

In addition, the lock member may include a housing having an outer surface, an operating member protruding from the front surface of the housing and movable leftward and rightward to enable locking and unlocking of the cover, And an engaging member which is provided to move together with the movement of the operating member in the inside of the engaging member; and an engaging member which is inserted into the engaging member at one side of the operating plate and moves according to the movement of the operating plate And a key lock plate inserted into the engaging member and movable upward and downward and locked and unlocked.

In addition, a striker fixed to one side of the inside of the main body may be protruded from the leading end of the engaging member so as to be unlocked.

In addition, a lower surface of the engaging piece may be formed with an inclined surface inclined in one direction.

In addition, elastic members may be respectively provided on the engaging member and the rear end of the operation plate.

In addition, the operation plate and the inner surface of the housing may be formed with engagement grooves through which projections formed on the upper surface of the key lock plate are inserted and engaged.

In addition, a fixing protrusion protruding from the bottom of the insertion groove of the operation plate is provided to limit the movement distance of the key lock plate when the key lock plate is moved downward.

In addition, a key operation member is rotatably coupled to the operation member by inserting and operating the key, and the key operation plate formed at the end of the key operation member is provided with a key lock plate Eccentric projections may be eccentrically formed to be inserted into the elongated holes formed in the guide grooves and engage with each other.

As described above, the present invention is a cover structure of a urea storage tank for storing urea, which is a reducing agent used for reducing nitrogen oxides in exhaust gas, wherein the urea storage tank cover structure is mounted on the upper surface of the urea storage tank, It is possible to prevent penetration of rainwater or foreign matter into the inside of the urea storage tank.

Further, since the urea storage tank is prevented from penetrating into other peripheral structures in the interior of the main body even when the urea flows around the urea due to inadvertent charging of the urea into the inside of the urea storage tank, the urea penetrates into the peripheral structure, It is possible to prevent a phenomenon that occurs.

Further, since the cover can be automatically opened by the stopper after the cover is opened, the cover opened during the urea filling operation into the urea storage tank does not rock, and the urea filling operation can be smoothly performed.

In addition, according to the present invention, when the cover is closed, the automatic stopping state of the stopper is manually released, the cover is slightly closed, and the stopper is closed again. When the stopper is pushed by the striker and moved downward, Therefore, there is an effect that the closing operation of the cover can be performed simply as much.

1 is a perspective view of an urea storage tank cover structure according to an embodiment of the present invention.
FIG. 2A is a perspective view of the cover with the cover opened in FIG.
2B is an enlarged view of part A of FIG. 2A.
3A is an assembled perspective view of a hinge member constituting a urea storage tank cover structure according to an embodiment of the present invention.
Figure 3b is a partially exploded perspective view of Figure 3a.
4 is an enlarged perspective view of part B in Fig.
FIG. 5 is a perspective view illustrating a structure of a lock member and a striker of a urea storage tank cover structure according to an embodiment of the present invention. FIG.
6 is a view showing the inside of a back surface of a lock member of a urea storage tank cover structure according to an embodiment of the present invention.
7 is an assembled perspective view of a locking member of a urea storage tank cover structure according to an embodiment of the present invention.
Fig. 8A is a view showing the state in which the engaging member is removed in 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 a position of a hinge member of a urea storage tank cover structure according to an embodiment of the present invention in accordance with an opening and closing operation of the cover, FIG. 9A is an arrangement structure of a hinge member when the cover is closed And Fig. 9B is a perspective view showing the arrangement structure of the hinge member when the cover is opened.
FIGS. 10A to 10D are views showing steps of releasing a lock 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 OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an urea storage tank cover structure according to an embodiment of the present invention, and FIG. 2 (a) is a perspective view of the cover in FIG.

As shown in the drawings, a urea storage tank cover structure 1 according to an embodiment of the present invention includes a main body portion 10 fixed to an upper portion of a urea storage tank T, And a cover 20 provided so as to be openable and closable.

The main body 10 is formed in a predetermined size and can be formed in a rectangular cylindrical shape and has a rear open structure. Inside the main body 10, an upper portion of the urea storage tank T And a receptacle 11 for receiving and forming a cap T1 is formed.

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

In addition, a predetermined space is formed in the upper end of the receiving port 11 so that the hinge member 30, which will be described later, can rotate when the cover 20 is opened and closed without interference.

 As shown in FIG. 2B, the injection port portion provided with the plug T1 of the urea storage tank T is inserted and projected upwardly through the bottom surface into the receiving port 11, Supported and adhered to each other.

In addition, the main body 10 can be coupled and fixed through a fastening member such as a bolt so as to be disassembled and assembled on the upper surface of the urea storage tank T. In the present embodiment, a bolt is fastened to the back surface of the main body 10 to fix it.

The cover 20 provided on the opening 10a of the body 10 has a folded structure so that the cover 20 is coupled to the body 10 And a hinge member 30 coupled to the cover 20 such that the cover 20 can be opened and closed.

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

The cover 20 has a structure in which a locking member 40 is provided to enable the locking and unlocking of the cover 20 from the main body 10.

The hinge member 30 includes a bracket 31 coupled to an inner surface of the cover 20 and a plurality of brackets 31 symmetrically formed on both sides of the bracket 31 so as to be folded and unfolded while being coupled to the bracket 31. [ And the link members 32 of FIG.

3A, the link member 32 includes a first link 32a which is engaged with both inner side surfaces of the bracket 31 and a second link 32b which is disposed inside the first link 32a, A third link 32c rotatably coupled to one end of the second link 32b and a third link 32c rotatably coupled to one end of the second link 32b, 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, An extension piece 32f bent at one end of the third link 32c in a different direction and a sixth link 32g rotatably coupled to one end of the extension piece 32f.

The fourth link 32d smoothly operates even when the link member 32 is in contact with the engaging piece 14 provided on the inner surface of the main body 10 during the opening and closing operation of the cover 20 during the unfolding and folding operation of the link member 32 A convex curved surface portion may be formed on the rear surface.

The sixth link 32g can be fixedly coupled with the fixing bracket 14 fixed to the inner surface of the main body 10 and rotatably engaged with one end of the fifth link 32e. .

3B, the stopper 50 is fixed to a lower inner surface of the third link 32c of the pair of third links 32c. As shown in FIG. 3B, Is inserted into the insertion groove 32d-1 formed in the fourth link 32d located outside the third link 32c, and is engaged with the stem portion 51b constituting the latching pin 51 of the second link 32c .

A first crossbar 33 is provided rotatably between the second link members 32b for maintaining a gap therebetween and a second crossbar 34 for maintaining a gap between the fourth links 32d Are rotatably coupled to each other.

In addition, it can be rotatably coupled to the hinge pin 32d-2 at a position of the third link 32c and the fourth link 32d.

As described above, when the link member 32 is unfolded by the opening operation of the cover 20 at the one inner side position of the pair of link members 32 provided symmetrically with respect to each other, 4, the stopper 50 includes a latching pin 51 and a mounting bracket 51 which is inserted and supported by the latching pin 51. As shown in FIG. 4, A pressing plate 53 fixed to the outer circumferential surface of the engaging pin 51 and a pressing plate 53 fixed to the outer circumferential surface of the engaging pin 51 and being protruded between the pressing plate 53 and the mounting bracket 52 And an elastic member 54 for returning to the original position when the latching pin 51 is pressed and released.

5 or 7, the locking member 40 can be mounted on the cover 20 in a modular structure in the form of a single casing, in which a housing 40a constituting the outer surface is formed The operation member 41 protrudes from the front surface of the housing 40a so that the operation member 41 is movable left and right so that the cover 20 can be locked and unlocked.

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

6, when the back plate of the housing 40a is detached, an operation plate 41a located inside the latch member 43 and the latch member 43 described later is provided inside the housing 40a Structure.

In other words, the housing 40a has a structure in which the engaging member 43 and the operation plate 41a are inserted.

A fixing piece 42 is fixedly formed on one side of the operating member 41 protruding outside the front surface of the housing 40a while being spaced from the outside of the housing 20 and protruding outside the cover 20 Structure. Therefore, when the operating member 41 is moved in the direction of the fixing piece 42 by holding the one fixing piece 42, the locking state of the cover 20 can be easily released.

Further, the housing 40a has a structure in which an engaging member 43 that moves together with the movable operating member 41 is provided on the inner surface of the housing 40a.

The latching member 43 has a plate-like structure having a predetermined area and a latching piece 43a is formed at the distal end of the latching member 43. The latching piece 43a has a slope 43b.

The opening 40a-2 is formed at the distal end of the housing 40a so that the latching piece 43a is exposed toward the front end of the housing 40a.

Further, the engaging member 43 has a structure in which the elastic member 44 is protruded from the rear end portion.

The elastic member 44 may be a coil spring, and may include at least one elastic member.

An operation plate 41a having a plate-like structure for moving together with the movement of the operating member 41 having a protruding structure is formed on the inside of the latching member 43. The operation plate 41a has one end And a key lock plate 45 is provided at a substantially central position to move the key lock plate 45 upward and downward.

6, when the operating member 41 is moved in the lateral direction for unlocking by being fitted to one side of the upper portion of the engaging member 43, the engaging member 43 is moved simultaneously So that the engagement can be released from the striker 12, as shown in Fig.

8A, a protrusion 45a protruding from the upper surface of the key lock plate 45 is inserted into the inner surface of the operation plate 41a and the housing 40a, The grooves 41a-1 and 40a-1 are formed so as to communicate with each other.

8B, the key lock plate 45 may be provided so as to be movable up and down in an insertion groove 41a-2 formed in the operation plate 41a, and the operation plate 41a, A locking protrusion 41a-3 protrudes from the bottom of the insertion groove 41a-2 of the key lock plate 45 to limit the moving distance of the key lock plate 45 when the key lock plate 45 is moved down.

The engaging groove 41a-1 formed on the upper portion of the operation plate 41a is formed to communicate with the insertion groove 41a-2 so that the protrusion 45a of the key lock plate 45 is inserted It is possible to smoothly carry out the movement.

One or more elastic members 41c are mounted on the rear end of the operation plate 41a and the elastic member 41c is elastically projected forward of the elastic member 41c as shown in Fig. The support plate 41d can be assembled.

7, 8A and 8B, the operation member 41 is rotatably engaged in a fixed state by inserting and operating (rotating) the key in the operation member 41 A key operation member 46 is formed and an eccentric projection 46b is eccentrically projected from an end of the key operation member 46, that is, a key operation plate 46a formed on the inner surface of the housing 40a, The key lock plate 45 is formed with a slot 45b through which the eccentric protrusion 46b is inserted so that the eccentric protrusion 46b is moved up and down according to the eccentric movement of the eccentric protrusion 46b.

The engaging piece 43a is engaged with the lower portion of the striker 12 formed inside the main body portion 10 and moves simultaneously with the lateral movement of the operating member 41 to move from the striker 12 So that the cover 20 is released from the main body 10 in the upward direction.

2B, the striker 12 is fixed by a fixing member 13, and the fixing member 13 is bent and formed on the inner surface of the main body 10 and can be fixedly coupled thereto.

In other words, the housing 40a is provided with the lock member 40 so as to be modularized.

4, the latching pin 51 constituting the stopper 50 includes a handle 51a disposed on the outside of the attachment bracket 52 and a handle 51b disposed on the handle 51a. And a stem portion 51b extending through the mounting bracket 52 while having a length corresponding to the length of the elastic member 54. The elastic member 54 has a structure in which the pressure plate 53 is fixed to the stem portion 51b, .

In an embodiment of the present invention, the handle portion 51a of the latching pin 51 may be formed in a circular shape, but it is not limited thereto and may be formed in various shapes that are easily grasped.

The mounting bracket 52 is bent and has a substantially inverted U shape and is composed of a horizontal part 52a and a vertical part 52b formed to have a predetermined length on both sides of the horizontal part 52a, In addition, the mounting bracket 52 may be provided such that the stem portion 51b of the latching pin 51 passes through the horizontal portion 52a and is slidable.

The pressing plate 53 may be fixedly connected to the stem 51b constituting the engaging pin 51. The pressing plate 53 may be fixed to the stem 51b for convenience of assembly, So that the pressing plate 53 can be supported.

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

1, a urea storage tank cover structure 1 is provided on an upper portion of a urea storage tank T, and a cap (not shown) of a urea storage tank T T1).

If the urea storage tank T is to be filled with urea, the cover 20 provided in the main body portion 10 constituting the urea storage tank cover structure 1 is first opened. When the key is inserted into the key operation member 46 formed in the operation member 41 constituting the lock member 40 formed on the outer surface of the cover 20 and turned in one direction, State is released.

8A and 8B, a key operation plate 46a, which is integrally connected to the key operation member 46, is provided on the inner side of the key operation member 46, that is, on the inner side of the housing 40a And the key operation plate 46a is eccentrically formed in the key operation plate 46a so that when the key operation member 46 is rotated in one direction through the key, the key operation plate 46a is rotated simultaneously The eccentric projections 46b are moved.

At this time, the eccentric projections 46b are inserted into the elongated holes 45b of the key lock plate 45. When the eccentric projections 46b are rotated in the circumferential direction and moved downward as shown in FIG. 8B , And the key lock plate 45 also descend simultaneously.

The protrusion 45a of the key lock plate 45 is released from the engaging groove 41a-1 formed on the upper portion of the operation plate 41a and the engaging groove 40a-1 formed on the rear surface of the housing 40a, . Then, the operating member 41 of the lock member 40 can be moved in the lateral direction.

When the operating member 41 is pushed toward the fixing piece 42 with the basic locking state released by the key, the operating plate 41a and the key lock plate 45 simultaneously move in the lateral direction.

At this time, an elastic member 41c is mounted on the rear end of the operation plate 41a, so that the operation plate 41a moves while compressing the elastic member 41c.

6, the projecting portion 41b formed on one side of the operation plate 41a is simultaneously moved to move the latching member 43 provided in front of the operation plate 41a in the lateral direction .

An elastic member 44 is mounted on the rear end of the locking member 43 so that the elastic member 44 moves while compressing the locking member 43 when the locking member 43 is moved.

The latching member 43 is formed with a latching piece 43a at a front end thereof and the latching piece 43a is positioned at a lower portion of the striker 12 provided inside the main body portion 10, The engaging piece 43a is moved away from the striker 12 and the cover 20 is moved away from the main body 10 It can be opened.

Of course, when the operating member 41 moved in one direction is placed, the operating member 41, the operating plate 41a, and the engaging member 43 are simultaneously moved to the original position by the repulsive force of the compressed elastic members 41c, And the engaging piece 43a is exposed again from the housing 40a.

The cover 20 is opened according to the release operation of the lock member 40. The cover 20 is provided with a hinge member 30 symmetrical to each other on both sides of the cover 20 so that when the hinge member 30 moves, 20 are opened.

9A and 9B, the hinge member 30 is provided with a link member 32. When the cover 20 is opened, a bracket 31 is attached to the inner side surface of the cover 20 When the cover 20 is lifted upward from the main body 10 in the opening operation of the cover 20 and the bracket 31 is lifted at the same time, The link 32a to the sixth link 32g are folded and unfolded.

The fourth link 32d of the link member 32 is formed with an insertion groove 32d-1. The engagement pin 51 of the stopper 50 provided under the inner surface of the fifth link 32f, The elastic member 54 located on the inner side of the mounting bracket 52 is compressed and the insertion groove 32d is pressed by the repulsive force of the elastic member 54 which is compressed while the fourth link 32d is unfolded. The engaging pin 51 is automatically inserted into the engaging portion of the cover 20 so that the cover 20 is held in the opened state (in the direction of 90 degrees from the upper surface of the main body 10).

As described above, in the urea storage tank cover structure 1 according to the embodiment of the present invention, when the cover 20 is opened from the main body 10, the cap T1 of the urea storage tank T is opened, The cover T1 is closed again, and the cover 20 is closed.

The cover 20 is kept in a fixed state by the stopper 50 in the opened state and the cover 20 is not pivoted during the urea filling operation into the urea storage tank T to smoothly perform the urea filling operation You can.

On the other hand, when the opened cover 20 is to be closed again, the engaging pin 51 of the stopper 50 is first disengaged from the insertion groove 32d-1 of the fourth link 32d, When the handle portion 51a which is the end of the engaging pin 51 is gripped and pulled, the stem portion 51b formed integrally with the handle portion 51a is pulled.

A pressing plate 53 is fixed to the stem portion 51b so that the pressing plate 53 compresses the elastic member 54 inserted into the outer peripheral surface of the stem portion 51b as the stem portion 51b is pulled And moves to the outside of the mounting bracket 52.

As a result, the end of the stem portion 51b is separated from the insertion groove 32d-1 of the fourth link 32d. At this time, if the cover 20 is slightly closed, the link member 32 is folded The position of the fourth link 32d also changes so that when the handle portion 51a of the stopper 50 being pulled is placed, the pushing plate 53 is pushed by the repulsive force of the compressed elastic member 54, Even if the portion 51b moves toward the fourth link 32d, since the insertion groove 32d-1 is in a changed position, insertion and engagement are not performed.

In this state, when the cover 20 is continuously closed, the exposed latching piece 43a comes into contact with the striker 12 provided on the inner side surface of the main body 10.

The engaging piece 43a formed at the distal end of the engaging member 43 is formed with an inclined surface 43b whose lower surface is inclined in one direction so that when the inclined surface 43b meets the striker 12, The cover 20 is continuously closed so that it is positioned on the lower surface of the striker 12 and the cover 40 is continuously closed, The latching member 43a pushed back by the repulsive force of the elastic member 44 is returned and the lower surface of the striker 12 is hooked to complete the closing operation of the cover 20. [

According to the embodiment of the present invention, since the urea storage tank cover structure 1 is mounted on the upper surface of the urea storage tank T, the cap T1 of the urea storage tank T is not exposed to the outside, The penetration of rainwater or foreign matter into the interior of the storage tank T can be prevented.

In addition, even if urea flows around the urea storage tank T due to carelessness during charging of the urea, it is prevented from penetrating into other peripheral structures inside the main body portion 10, It is possible to prevent the occurrence of corrosion or the like.

According to the embodiment of the present invention, since the cover 20 can be automatically kept open by the stopper 50 after the cover 20 is opened, the U- The opened cover 20 does not rock and the urea filling operation can be smoothly performed.

When the cover 20 is closed, the automatic stopping state of the stopper 50 is released (the handle portion 51a is manually pulled), the cover 20 is slightly closed, the stopper 50 is placed again, When the striker 43 is pushed by the striker 12 and moves downward, the striker 12 automatically returns to the engaged position, and the closing operation of the cover 20 can be carried out by that much.

Since the lock member 40 has a small thickness protruding from the inner surface of the cover 20 and has a slim thickness and is locked and unlocked in the lateral direction, T1) can be installed and operated (locking and unlocking operations) without interference sufficiently even if the interval between them is small.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But fall within the scope of the appended claims.

1: urea storage tank cover structure
10:
10a: opening
11: Receiver
12: striker
13: Fixing member
14:
20: cover
21:
30: a 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: fifth link
32f: extension piece
32g: sixth link
33: 1st rail
34: 2nd crossbar
40:
40a: housing
40a-1:
40a-2:
41:
41a:
41a-1:
41a-2: insertion groove
41a-3: Fixing projection
41b:
41c: elastic member
41d:
42:
43:
43a:
43b:
44: elastic member
45: key lock plate
45a: Long hole
46: Key operation member
46a: Key operation plate
46b: eccentric projection
50: Stopper
51:
51a:
51b:
52: Mounting bracket
52a:
52b:
53: Platen
54: elastic member
55: Fixing pin
T: Urea storage tank
T1: Plug

Claims (15)

A main body 10 fixed to an upper portion of the urea storage tank T;
A cover 20 provided on the main body 10 to be openable and closable;
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 on the cover (20) so that the cover (20) is opened and closed from the main body (10);
Wherein the cover structure of the urea storage tank is formed of a synthetic resin. The method according to claim 1,
A cover structure for a urea storage tank according to claim 1, wherein a receiving hole (11) is formed in the main body part (10) so that a cap (T1) The method according to claim 1,
The hinge member 30 includes a bracket 31 coupled to an inner surface of the cover 20 and a plurality of brackets 31 symmetrically formed on both sides of the bracket 31 so as to be folded and unfolded while being coupled to the bracket 31. [ Of the cover member (32) of the urea storage tank. The method of claim 3,
The link member 32 includes a first link 32a which is engaged with both inner side surfaces of the bracket 31 and a second link 32b which is disposed inside the first link 32a, A third link 32c rotatably coupled to one end of the second link 32b and a second link 32b rotatably coupled to the first link 32b and the second link 32b, A fourth link 32d rotatably coupled to one end of the link 32a and a fifth link 32e rotatably coupled to one end of the fourth link 32d; And a fixing bracket 14 rotatably coupled to one end of the extension piece 32f and fixed to the inner surface of the main body 10, And a sixth link (32g) rotatably coupled to one end of the fifth link (32e). The urea storage tank Structure. The method of claim 4,
Is rotatably engaged with the hinge pin (32d-2) at a position of the third link (32c) and a part of the fourth link (32d). The method of claim 4,
And a stopper (50) for stopping the cover (20) to stay open is fixed to a lower inner surface of the third link (32c). The method of claim 6,
The stopper (50)
A mounting bracket 52 for allowing the locking pin 51 to be inserted and slidably supported; a pressing plate 53 fixed to the outer circumferential surface of the locking pin 51; And an elastic member 54 which is engaged with the outer circumferential surface of the engaging pin 51 and is elastically protruded between the pressing plate 53 and the attaching bracket 52 so as to return to the original position when the engaging pin 51 is pressed and released. Of the cover structure of the urea storage tank. The method of claim 7,
The latching pin (51) of the stopper (50)
A handle portion 51a that is positioned outside the mounting bracket 52 and is capable of being gripped and a handle portion 51b that penetrates the mounting bracket 52 and the third link 32c from the handle portion 51a, And a stem portion (51b) inserted and inserted in an insertion groove (32d-1) formed in a fourth link (32d) located on the outside of the cover (32d). The method according to claim 1,
The locking member (40)
An operation member 41 protruding from the front surface of the housing 40a so as to be movable leftward and rightward to enable locking and unlocking of the cover 20, And an engaging member 43 provided on the operating plate 41 so as to move together with the movable operating member 41. The engaging member 43 is provided with an engaging member 43, A protruding portion 41b which is inserted into the engaging member 43 at one end of the operating plate 41a so as to allow the engaging member 43 to move simultaneously with the movement of the operating plate 41a, And a key lock plate (45) inserted in the engaging member (43) and movable upwardly and downwardly to be locked and unlocked. The method of claim 9,
The striker 12 which is fixed to one side of the inside of the main body 10 while being in and out of the opening 10a of the housing 40a is provided at the tip end of the engaging member 43. The engaging piece 43a for unlocking is projected And the cover structure of the urea storage tank. The method of claim 10,
Wherein a lower portion of the engaging piece (43a) is formed with an inclined surface (43b) inclined in one direction. The method of claim 9,
And elastic members (44) (41c) are mounted on the rear end portions of the engaging member (43) and the operation plate (41a), respectively. The method of claim 9,
40a-1, 40a-1, 40a-2, 40a-1, 40a-2, 40a-1, 40a-2 and 40a-4 are formed on the inner surface of the operation plate 41a and the housing 40a to engage with protrusions 45a protruding from the upper surface of the key lock plate 45, 1) are formed to communicate with each other. 14. The method of claim 13,
And a fixing protrusion 41a-3 protruding from the bottom of the insertion groove 41a-2 of the operation plate 41a for restricting movement distance of the key lock plate 45 when the key lock plate 45 is moved downward. Cover structure of tank. The method of claim 9,
A key operation member 46 is rotatably coupled to the operation member 41 by inserting and operating the key and the key operation plate 46a formed at the end of the key operation member 46 is provided with a key lock Wherein an eccentric projection (46b) is inserted into a slot (45b) formed in the key lock plate (45) so as to move the plate (45) upward and downward and is eccentrically projected Cover structure.

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