KR20090030933A - Apparatus for opening and closing door in dishwasher - Google Patents

Abstract

A door switching of a dish washer is provided to reduce the frequency of the trouble occurrence, and the manufacturing cost and the process. A door switching(100) of a dish washer(1) comprises a bottom link(30) and a top link(40) connected to each other with a bottom door(10) and a hinge(70). A shear of the bottom link is combined with one side of a assemble link(120) which can rotate with 90°. The other side of the assemble link is combined through a bracket(130) and the hinge fixed to an inner case(2). The bottom link has the reverse L form facing a drainage opening(3) of the inner case. The bottom link is equipped in a trim symmetrically formed in left and right.

Description

{Apparatus for opening and closing door in dishwasher}

The present invention relates to a dishwasher, and more particularly, to an apparatus for opening and closing the lower door and the upper door of the dishwasher.

Referring to FIG. 1, a perspective view of a dishwasher 10 ′ with a conventional door closed is shown. Referring to FIG. 2, a perspective view of a dishwasher 10 ′ with a door open and a holder is shown. .

As shown in FIGS. 1 and 2, the conventional dishwasher 10 ′ has an inner case 12 ′ provided with a storage box 11 ′, and a handle 13 ′ at a front upper portion of the inner case 12 ′. ) Is formed, and the lower end is composed of one door 15 'coupled to the inner case 12' by the rotating shaft 14 '.

Since the dishwasher 10 'cannot have a single door 15', the height of the inner case 12 'cannot be increased, and therefore, the inner depth is usually deepened.

However, if the inner depth of the inner case 12 'is deep in this manner, the dishes should be placed far away from the dish holder 11', which causes inconvenience in storing the dish.

In addition, since there is only one door 15 ', the length thereof is long, and thus there is an inconvenience in opening and closing the door 15'.

In addition, since the inner depth of the inner case 12 ′ is large, the length of the dish holder 11 ′ is also increased, so that when the door 15 ′ is opened to store the dish, the lid 11 ′ protrudes forward. There is also the problem of lengthening. That is, under some installation conditions, the door 15 'or the dish holder 11' may be caught by a faucet of a kitchen.

In order to solve the above problems, the door is made up of the upper door and the lower door as in Korean Patent Laid-Open Publication No. 2001-0107640, and those in which opening and closing of the upper door and the lower door interlock with each other are released one after another.

However, since the link structure for allowing the upper door and the lower door to interwork is quite complicated, the number of parts is inevitably increased, resulting in an increase in manufacturing cost and a process and a high frequency of failure.

In addition, the link structure that allows the upper door and the lower door to interlock with each other does not have a separate damper, so that when the upper and lower doors are opened and closed, a large shock is applied to each of the upper door, the lower door, and the link assembly. However, the impact caused the upper door, the lower door, and the link assembly to be easily broken.

The present invention has been made to solve the above problems, the upper door and the lower door is opened and closed in conjunction with each other, not only can significantly reduce the space for opening and closing the door compared to the conventional, the minimum link As the upper door and the lower door can be interlocked, the number of parts can be reduced to significantly reduce manufacturing costs and processes, and the frequency of breakdowns can be reduced, and the upper and lower doors can be opened and closed smoothly without impact. The object is to provide a door opening and closing device.

According to an aspect of the present invention for achieving the above object, an inner case in which a communication port for storing the dish is formed, a lower door which opens to the front of the communication port in a state where the lower part of the communication port is closed, and an upper part of the communication port. An apparatus for opening and closing the lower door and the upper door in a dishwasher including an upper door which opens to the upper surface of the inner case along the front of the communication port in a closed state, the lower door and the front end connected by a hinge link; And a main rod having a front end fixed to the upper door and a rear end hinged to a rear end of the lower link, and a server rod branched upward from the main rod, wherein the main rod has a main shaft fixed to the inner case. According to the present invention, there is provided a door opening and closing device of a dishwasher, the main guide groove having a sliding operation and the server load including an upper link having a server guide groove that can slide along an auxiliary shaft fixed to the inner case. .

When the lower door and the upper door open the communication port, the lower link and the upper link move toward the communication port, but the main guide groove operates forward to rear along the main shaft and the server guide groove is When the lower door and the upper door closes the communication port along the auxiliary axis, the lower link and the upper link move in the opposite direction of the communication port, but the main guide groove is along the main axis. It is preferable to operate from the rear to the front and the server guide groove is operated from below to upward along the auxiliary axis.

The lower link and the upper link are symmetrically formed on the left and right sides of the inner case.

It is preferable that a plurality of impact preventing dampers are further provided at any one of the lower link and the upper link or the lower link and the upper link.

The damper includes at least one rod member capable of rotating a predetermined section about a rotation shaft provided in an inner case, one side of which is fixed to the inner case, and the other side of the damper connected to the rod member to contract or rotate according to the rotation of the rod member. And at least one spring member that relaxes, wherein the rod member is arranged to contact or be spaced apart from the stopper provided in the lower link and the upper link, respectively, or contact the stopper provided in any one of the lower link and the upper link. Arranged or spaced apart, the spring member is characterized in that the rod member in contact with the stopper to elastically support the rod member when moving toward the communication port or in the opposite direction of the communication hole.

In another embodiment, the damper, at least one rod member that can be rotated for a predetermined period around the rotation shaft provided in the inner case, one side is fixed to the inner case and the other side is connected to the rod member to rotate the rod member And at least one first spring member that contracts or relaxes, wherein the rod member is arranged to be in contact with or spaced apart from a stopper provided in any one of the lower link and the upper link. At least one auxiliary spring that resiliently supports the rod member when the rod member in contact with the stopper moves toward the communication port or moves in the opposite direction of the communication hole and is opposite to the side where the rod member is installed; Further comprising a member, wherein the auxiliary spring member is fixed on one side of the inner case and the other side It is connected to any one of the lower link and the upper link is characterized in that the contraction or relaxation in accordance with any one of the lower link and the upper link.

The lower link has a "┛" shape toward the communication port.

The upper link has a "┻" shape toward the communication port.

The present invention relates to a door opening and closing device of the dishwasher, the lower link is connected to the lower door and the front end hinge; And a main rod having a front end fixed to the upper door and a rear end hinged to a rear end of the lower link, and a server rod branched upward from the main rod, wherein the main rod has a main shaft fixed to the inner case. The server rod includes an upper link having a main guide groove which can be slid along and the server guide groove which is slidable along an auxiliary shaft fixed to the inner case. As a result, the space for opening and closing the door can be significantly reduced as compared to the conventional one, and since the upper and lower doors can be interlocked with a minimum of links, the number of parts can be reduced to significantly reduce manufacturing costs and processes, and It has a good effect to reduce the frequency of outbreaks In particular, the upper link has an excellent effect that can operate smoothly without friction than the prior art because it has the guide groove in sliding server operable along the main guide groove is possible, and the auxiliary sliding motion along the major axis.

In addition, since all of the lower link and the upper link or any one of the lower link and the upper link is further provided with a plurality of shock-proof dampers, the upper door and the lower door can be opened and closed smoothly without impact, specifically, to close the lower door and the upper door. When the damper pulls the lower door and the upper door, the lower door and the upper door are flexible closed, and the damper pulls the lower door and the upper door in the opposite direction when the lower door and the upper door are opened. By doing this there is an excellent effect to mitigate the impact that occurs during the opening of the lower door and the upper door.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the door opening and closing device of the dishwasher according to the present invention.

Figure 3 is a perspective view showing a dishwasher according to the present invention, Figure 4 is a side sectional view showing a closed state of the door opening and closing device of the dishwasher according to the present invention, Figure 5 is a door opening and closing of the dishwasher according to the present invention. Figure 6 is a side cross-sectional view showing an open state of the device, Figures 6 to 8 is a state diagram showing the operating state of the damper when the door opening and closing device of the dishwasher according to the present invention operates in the closed open state.

First, the dishwasher 1 to which the present invention is applied includes an inner case 2 in which a communication port 3 for storing a dish is formed, and an outer circumferential surface of the inner case 2 and forming an appearance of the dishwasher 1. An outer case (not shown), the lower door 10 which opens to the front of the communication port 3 in a state where the lower part of the communication port 3 is closed, and in a state where the upper part of the communication port 3 is closed. An upper door 20 is opened to the upper surface of the inner case 2 along the front of the communication port (3). A fixing hook 80 is provided inside the lower door 10, and an inner case 2 is provided with a latch and a micro switch 90 that are engaged with or released from the fixing hook 80. The operation relationship between the fixed hook 80 and the latch and the micro switch 90 is well known in the art, so a detailed description thereof will be omitted here.

3 to 5, the door opening and closing device 100 of the dishwasher 1 according to the present invention, the lower link (10) as a device for opening and closing the lower door 10 and the upper door (20) 30 and an upper link 40.

First, the lower link 30 is connected to the lower door 10 and the front end by the hinge 70.

In an embodiment, the front end of the lower link 30 engages with one side of the rotatable link 120 which can be rotated 90 ° through the inner surface of the lower door 10 and the hinge 70. In addition, the other side of the rotation link 120 is preferably coupled to the bracket 130 and the hinge 70 fixed to the inner case (2).

The lower link 30 is coupled to the rotational link 120 and the hinge 70, the lower link 30 has a "┛" shape toward the communication port 3 of the inner case (2).

The lower link 30 is preferably formed symmetrically on the left and right sides of the inner case 2. More preferably, the lower link 30 is preferably provided at trim portions formed symmetrically on the left and right sides of the inner case 2.

In addition, a plurality of stoppers 31 and 32 are formed in the lower link 30.

In the embodiment, the stoppers 31 and 32 consist of a first stopper 31 and a second stopper 32, the function and action of which stoppers 31 and 32 are detailed in the dampers 50 and 60 described below. Will be explained.

On the other hand, the upper link 40 is fixed to the front end and the upper door 20, the rear end is connected to the rear end and the hinge 71 of the lower link (30).

The upper link 40 has a "┻" shape toward the communication port 3 of the inner case 2.

Like the lower link 30, the upper link 40 is also formed symmetrically on the left and right sides of the inner case 2. More preferably, the upper link 40 is preferably provided at each trim portion symmetrically formed on the left and right sides of the inner case 2.

In an embodiment, the upper link 40 consists of a main rod 41 and a server rod 42.

The front end of the main rod 41 is fixed integrally with the upper door 20 and the rear end is connected to the hinge 71 so as to be rotatable with the rear end of the lower link 30.

The main rod 41 has a main guide groove 43 capable of sliding along the main shaft 72 fixed to the inner case 2.

The main guide groove 43 is preferably formed between the coupling point of the main rod 41 and the server rod 42 and the rear end of the main rod 41.

The server rod 42 branches upwards from the main rod 41.

The server rod 42 has a server guide groove 44 capable of sliding along an auxiliary shaft 73 fixed to the inner case 2.

This server guide groove 44 is preferably formed along its longitudinal direction.

The linkage operation of the lower link 10 and the upper link 40 having the above structure is as follows.

First, when the lower door 10 and the upper door 20 open the communication port 3 of the inner case 2, the lower link 30 and the upper link 40 as shown in FIG. Move toward the communication port 3 of the inner case (2).

At this time, the main guide groove 43 of the main rod 41 operates from the front to the rear along the main shaft 72 of the inner case 2, the server guide groove 44 of the server rod 42 is the inner case It operates from above to below along the auxiliary axis 73 of (2).

On the other hand, when the lower door 10 and the upper door 20 closes the communication port 3 of the inner case 2, the lower link 30 and the upper link 40 as shown in FIG. It moves toward the opposite direction of the communication port 3 of the inner case 2.

At this time, the main guide groove 43 of the main rod 41 operates from the rear to the front along the main shaft 72 of the inner case 2, the server guide groove 44 of the server rod 42 is the inner case ( It operates from below to upward along the auxiliary shaft 73 of 2).

In the present invention, the lower link 30 and all of the upper link 40 or any one of the lower link 30 and the upper link 40 is preferably further provided with a plurality of shock-proof dampers (50, 60).

In the exemplary embodiment, the dampers 50 and 60 are respectively formed of two dampers 50 and 60 on the left and right sides of the inner case 2, that is, the first dampers 50 and the second dampers 60. Only one 60 may be formed on each of the left and right sides of the inner case 2 or two or more may be formed on the left and right sides thereof.

4 to 8, the first damper 50 and the second damper 60 are composed of rod members 51 and 61 and spring members 52 and 62, respectively.

The rod members 51 and 61 may be rotated by a predetermined section about the rotation shafts 53 and 63 provided in the inner case 2. Here, the rod members 51 and 61 are in contact with or spaced apart from the stopper 31 and 32 provided in all of the lower link 30 and the upper link 40 or in any one of the lower link 30 and the upper link 40. do.

In the drawing, as described above, the first and second stoppers are contacted or spaced apart from the rod member 51 of the first damper 50 and the rod member 61 of the second damper 60 in the lower link 30, respectively. (31,32) are provided.

The spring members 52 and 62 are fixed to the inner case 2 and the other side thereof is connected to the rod members 51 and 61 to contract or relax in accordance with the rotation of the rod members 51 and 61.

Here, the spring members 52 and 62 are rod members when the rod members 51 and 61 in contact with the stoppers 31 and 32 move toward the communication port 3 or move in the opposite direction to the communication port 3. Elastic support for (51, 61).

In the figure, the spring members 52 and 62 are composed of a first spring member 52 and a second spring member 62.

One side of the first spring member 52 is fixed to the inner case 2 as a fixture 74 and the other side is connected to the rod member 51 side of the first damper 50.

In addition, one side of the second spring member 62 is fixed to the inner case as a fixture 74 and the other side thereof is connected to the rod member 61 side of the second damper 60.

Operation of the dampers 50 and 60 is as follows.

First, when the lower door 10 and the upper door 20 open the communication port 3 of the inner case 2, the lower link 30 and the upper link 40 are the communication port of the inner case 2. Move towards (3).

At the same time, the rod member 51 of the first damper 50 is rotated from the top to the bottom about the pivot shaft 63 while being caught by the first stopper 31 of the lower link 30, and the second damper. The rod member 61 of the 60 rotates from the upper part to the lower part about the rotation shaft 63 while pushing the second stopper 32 of the lower link 30. At this time, the first spring member 52 is relaxed while elastically supporting the rod member 51 of the first damper 50, the second spring member 62 is the rod member 61 of the second damper 60 It is contracted while supporting elasticity (refer to the drawing, the operations are performed in the order of FIGS. 6, 7 and 8).

Here, the first damper 50 can mitigate the shock when the lower door 10 is opened, and the second damper 60 has a more open operation of the lower door 10 when the lower door 10 is opened. Helping to be efficient.

Meanwhile, when the lower door 10 and the upper door 20 close the communication port 3 of the inner case 2, the lower link 30 and the upper link 40 communicate with the inner case 2. The sphere 3 moves in the opposite direction.

At the same time, the rod member 51 of the first damper 50 rotates from the lower part to the upper part about the pivot shaft 53 while pushing the first stopper 31 of the lower link 30, and the second damper 60. The rod member 61 of) rotates from the lower portion to the upper portion of the rotation shaft 63 while being caught by the second stopper 32 of the lower link 30. In this case, the first spring member 52 is contracted while elastically supporting the rod member 51 of the first damper 50, and the second spring member 62 is configured to support the rod member 61 of the second damper 60. The elastic support is relaxed while referring to the drawings (operation is performed in the order of FIGS. 8, 7 and 6).

Here, the first damper 50 assists to more efficiently close the lower door 10 when the lower door 10 is closed, and the second damper 60 lowers when the lower door 10 is closed. It is possible to alleviate the impact when the door 10 is closed.

In another embodiment, one damper 60 'is formed on each of the left and right sides of the inner case 2, and two or more dampers 60' are formed on the left and right sides of the inner case 2 as needed. It may be.

9 and 10, the damper 60 'is composed of a rod member 61' and a spring member 62 '.

The rod member 61 ′ is rotatable for a predetermined section about the rotation shaft 63 ′ provided in the inner case 2. Here, the rod member 61 'is in contact with or spaced apart from the stopper 31 provided in any one of the lower link 30 and the upper link 40.

In the figure, the lower link 30 is provided with a stopper 31 which contacts or is spaced apart from the rod member 61 'of the damper 60', respectively.

The spring member 62 'is fixed to the inner case 2 and the other side is connected to the rod member 61' to contract or relax according to the rotation of the rod member 61 '.

Here, the spring member 62 'is a rod member 61' when the rod member 61 'in contact with the stopper 31 moves toward the communication port 3 or moves in the opposite direction to the communication port 3; Resilient support.

In the figure, one side of the spring member 62 'is fixed to the inner case 2 as a fixture 74' and the other side is connected to the rod member 61 'side of the damper 60'.

In addition, the rod member 61 'further includes at least one auxiliary spring member 110 provided on a side opposite to the side on which the rod member 61' is installed.

One side of the auxiliary spring member 110 is fixed to the inner case 2 as a fastener 111 and the other side is connected to any one of the lower link 10 and the upper link 20, the lower link 10 and the upper link. It contracts or relaxes according to the operation of any one of 20.

In the figure, the other side of the auxiliary spring member 110 is connected to the upper link (20).

Operation of the damper 60 'and the auxiliary spring member 110 are as follows.

First, the damper 60 'is the same as the operation of the second damper 60 in the above-described embodiment, and a detailed description thereof will be omitted here. On the other hand, the auxiliary spring member 110, when the lower door 10 and the upper door 20 to open the communication port 3 of the inner case 2, the lower door 10 so that the opening operation is performed smoothly while relaxing. And to open the upper door 20 to alleviate the impact.

Operation of the door opening and closing device 100 of the dishwasher 1 according to the present invention is shown in Figures 3 to 8, first, the lower door 10 and the upper door 20 of the inner case (2) When opening the communication hole 3, the lower link 30 and the upper link 40 move toward the communication hole 3 of the inner case 2, where the main guide groove of the main rod 41. 43 is operated from front to back along the main shaft 72 of the inner case 2, the server guide groove 44 of the server rod 42 is upward along the auxiliary shaft 73 of the inner case 2 Operates downward from

At this time, the rod member 51 of the first damper 50 is rotated from the top to the bottom around the pivot shaft 53 while being caught by the first stopper 31 of the lower link 30, and the second damper ( The rod member 61 of the 60 rotates from the top to the bottom about the rotation shaft 63 while pushing the second stopper 32 of the lower link 30. At this time, the first spring member 52 is relaxed while elastically supporting the rod member 51 of the first damper 50, the second spring member 62 is the rod member 61 of the second damper 60 It contracts while supporting elasticity.

In contrast, when the lower door 10 and the upper door 20 close the communication port 3 of the inner case 2, the lower link 30 and the upper link 40 communicate with the inner case 2. Moving in the opposite direction to the sphere 3, where the main guide groove 43 of the main rod 41 operates from the rear to the front along the main axis 72 of the inner case 2, and of the server rod 42. The server guide groove 44 operates downwardly upward along the auxiliary shaft 73 of the inner case 2.

At this time, the rod member 51 of the first damper 50 rotates from the lower portion to the upper portion around the rotation shaft 53 while pushing the first stopper 31 of the lower link 30, and the second damper 60. The rod member 61 is rotated from the lower portion to the upper portion of the rotation shaft 63 while being caught by the second stopper 32 of the lower link 30. In this case, the first spring member 52 is contracted while elastically supporting the rod member 51 of the first damper 50, and the second spring member 62 is configured to support the rod member 61 of the second damper 60. Relax while supporting elasticity.

1 is a perspective view showing a closed state of the door for a dish washer according to the prior art,

Figure 2 is a perspective view showing an open state of the door for a dish washer according to the prior art,

3 is a perspective view showing a dish washer according to the present invention,

Figure 4 is a side cross-sectional view showing a closed state of the door opening and closing device of the dishwasher according to the present invention,

Figure 5 is a side cross-sectional view showing an open state of the door opening and closing device of the dishwasher according to the present invention,

6 to 8 is a state diagram showing the operating state of the damper when the door opening and closing device of the dishwasher according to the present invention operates in the closed open state,

Figure 9 is a side cross-sectional view showing a closed state in another embodiment of the door opening and closing device of the dishwasher according to the present invention,

Figure 10 is a side cross-sectional view showing an open state in another embodiment of the door opening and closing device of the dishwasher according to the present invention.

Explanation of symbols on the main parts of the drawing

1: dishwasher 2: inner case

3: communication port 10: lower door

20: upper door 30: lower link

31: first stopper 32: second stopper

40: upper link 41: main rod

42: Server Load 43: Main Guide Home

44: server guide groove 50: first damper

51: rod member of first damper 52: first spring member

53: rotation shaft 60: second damper

60 ': damper 61: rod member of second damper

61 ': rod member of damper 62: second spring member

62 ': spring member 63': rotating shaft

63: pivot axis 70, 71: hinge

72: spindle 73: minor axis

74, 74 ': Fixture 80: Fixing hook

90: micro switch 100: door opening device

110: auxiliary spring member 111: fixture

120: rotation link 130: bracket

Claims (8)

An inner case in which a communication port for storing dishes is formed, a lower door which opens to the front of the communication port in a state where the lower part of the communication port is closed, and the inner case along the front of the communication hole in a state where the upper part of the communication port is closed. An apparatus for opening and closing the lower door and the upper door in a dishwasher including an upper door that opens to an upper surface of the A lower link hingedly connected to the lower door; And The upper door and the front end is fixed and the rear end is composed of a main rod hinged to the rear end of the lower link and a server rod branched from the main rod to the upper, the main rod is along the main shaft fixed to the inner case The server load opening and closing device of the dishwasher, characterized in that the server rod has a main guide groove capable of sliding operation and the upper link having a server guide groove capable of sliding movement along the auxiliary shaft fixed to the inner case. The method of claim 1, When the lower door and the upper door open the communication port, the lower link and the upper link move toward the communication port, but the main guide groove operates forward to rear along the main shaft and the server guide groove is When the lower door and the upper door closes the communication port along the auxiliary axis, the lower link and the upper link move in the opposite direction of the communication port, but the main guide groove is along the main axis. A door opening and closing device of a dishwasher, wherein the server guide groove operates from below to upward along the auxiliary shaft. The method of claim 2, The lower link and the upper link are symmetrically formed on the left and right sides of the inner case door opening and closing device of the dishwasher. The method according to any one of claims 1 to 3, All of the lower link and the upper link, or any one of the lower link and the upper link is a door opening and closing device of the dishwasher, characterized in that further provided with a plurality of shock-proof dampers. The method of claim 4, wherein The damper is, At least one rod member capable of pivoting a predetermined section about a rotation shaft provided in the inner case, and at least one of which one side is fixed to the inner case and the other side is connected to the rod member to contract or relax according to the rotation of the rod member. It includes a spring member of, The rod member is arranged to contact or spaced apart from the stopper provided in the lower link and the upper link, respectively, or arranged to contact or spaced apart from the stopper provided in any one of the lower link and the upper link, the spring member is The door opening and closing device of the dishwasher, characterized in that the rod member is elastically supported when the rod member in contact with the stopper moves toward the communication port or in the opposite direction of the communication hole. The method of claim 4, wherein The damper is, At least one rod member capable of pivoting a predetermined section about a rotation shaft provided in the inner case, and at least one of which one side is fixed to the inner case and the other side is connected to the rod member to contract or relax according to the rotation of the rod member. It includes a spring member of, The rod member is arranged to contact or spaced apart from the stopper provided in any one of the lower link and the upper link, the spring member is the rod member in contact with the stopper to move toward the communication port or the opposite of the communication port Elastically supporting the rod member when moving in the direction, Further comprising at least one auxiliary spring member provided on a side opposite to the side on which the rod member is installed, wherein the auxiliary spring member is fixed to the inner case one side and the other side to any one of the lower link and the upper link Is connected to shrink or relax according to the operation of any one of the lower link and the upper link door opening and closing device of the dishwasher. The method of claim 1, The lower link is a door opening and closing device of the dishwasher, characterized in that it has a shape toward the communication port. The method of claim 1, The upper link is a door opening and closing device of the dishwasher, characterized in that it has a shape toward the communication port.

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