KR20220030765A - Hinge apparatus and dish washer including the same - Google Patents

Abstract

A door hinge device according to one embodiment of the present invention comprises: an elastic member providing elastic force in the direction in which a door is closed; a rope having one end connected to the elastic member; an engagement member coupled to the other end of the rope and having an engaging protrusion; and a hinge bracket provided on the door and having a hook, which is separated from the engagement member when the door being closed and is caught on the engaging protrusion of the engagement member when the door being opened. Furthermore, the door hinge device is configured such that the weight of the door itself and the elastic force of the elastic member are balanced, so that the door can be maintained in a partially opened state.

Description

Hinge device and dishwasher including same

The present invention relates to a hinge device and a dishwasher including the same, and more particularly, to a hinge device having an improved door opening/closing structure, and a dishwasher including the same.

The content described in this section merely provides background information on the present invention and does not constitute the prior art.

A dishwasher is a device that washes contaminants such as food residues on dishes or cooking utensils using detergent and washing water.

A typical dishwasher includes a tub that provides a washing space, a rack provided in the tub to accommodate dishes, a jet arm that sprays washing water into the rack, a sump that stores washing water, and a sump that supplies washing water stored in the sump to the jet arm. includes a pump.

Such a dishwasher may perform a washing process of washing away dirt attached to the dishes, a rinsing process of rinsing the dishes that have undergone the washing process, and a drying process of removing moisture from the surface of the dishes that have undergone the rinsing process.

In the case of a general dishwasher, a rope and a spring are used as a configuration for adjusting an opening angle of a rotating door or fixing a position of a door in an open state. That is, the position of the door is adjusted by the elastic force of the spring.

As an example of a conventional dishwasher, the dishwasher disclosed in Korean Patent No. 10-1257508 includes a tub having a washing tub formed therein, a door selectively opening and closing the front of the tub, and a hinge shaft mounted on a side surface of the tub. The bracket includes the formed bracket, a door hinge rotatably coupled to the hinge shaft, and a fixing member for preventing the door hinge from being separated from the bracket.

However, in the case of the door of the dishwasher according to the prior art, the door receives an elastic force in the direction to close the tub within a predetermined angle by the spring connected to the rope, and closes the tub when the door is not rotated more than a predetermined angle. is formed

Therefore, in the case of a dishwasher according to the prior art, there is a problem in that it is impossible to discharge the heat inside the tub after washing the dishes or to partially open the door to ventilate the inside of the tub.

The present invention has been devised to solve the above-described problems, and an object of the present invention is to provide a hinge device in which a door can be partially opened by rotating only a predetermined angle, and a dishwasher including the same.

Another object of the present invention is to provide a hinge device having a structure capable of effectively suppressing sudden opening of a door, and a dishwasher including the same.

Another object of the present invention is to provide a hinge device having a structure capable of effectively suppressing a rotation bracket mounted on a door from being separated from an interlocking member, and a dishwasher including the same.

Another object of the present invention is to provide a hinge device having a structure capable of suppressing sudden opening of a door caused by a rotation bracket mounted on a door is separated from an interlocking member, and a dishwasher including the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

A hinge device according to an embodiment includes an elastic member for providing an elastic force in a direction in which a door is closed, a rope having one end connected to the elastic member, an interlocking member coupled to the other end of the rope and having a locking protrusion, and the door is provided and a hinge bracket that is separated from the interlocking member when the door is closed and has a hook formed so as to be caught on the engaging projection of the interlocking member when the door is opened, and the self-load and elasticity of the door when the door is opened The elastic force of the member is balanced, so that the door can be maintained in a partially opened state.

Hinge device according to an embodiment, by forming the length of the tip of the hook provided in the hinge bracket to be long, so that the hook does not separate from the interlocking member when the door is opened, the intention due to the detachment from the interlocking member of the hook Sudden full opening can be suppressed.

The hinge device according to another embodiment may include a stopper disposed on a movement path of the hook in the interlocking member and limiting the movement of the hook.

The hinge device according to another embodiment includes a cable connecting the hinge bracket and the interlocking member to each other, so that the door can be elastically supported by the elastic member even if the hook is separated from the interlocking member.

The hook includes a groove forming portion in which a locking groove in which the locking protrusion is seated is formed, and a tip portion bent from the groove forming portion, and is defined as the distance between the lowest point of the locking groove and the end of the tip when the door is closed. The first distance may be formed to be longer than the second distance defined as the distance between the lowermost point of the locking groove and the lowermost point of the locking projection.

The hinge bracket may include a fastening plate fastened to the door, and a holding plate extending from the fastening plate toward the interlocking member and having a hook formed thereon.

The interlocking member may include a rope fastening groove to which a rope is connected, an insertion groove formed to insert a locking plate, and a locking protrusion provided to be spaced apart from the locking groove when the door is closed.

A mounting rib in which the interlocking member is seated is formed at the lower portion of the door, and a seating groove into which the interlocking rib is inserted may be formed in the interlocking member.

The seating groove may be mounted on the mounting rib by the elastic force of the elastic member.

The rope guide may include a first sliding surface in contact with the upper surface of the rope, and a second sliding surface in contact with the lower surface of the rope.

The elastic member may be provided with a coil spring and a tension spring.

The interlocking member may include a stopper disposed on the movement path of the hook to limit the movement range of the hook.

The stopper is inserted into the interlocking member and includes an insertion protrusion, a portion of which is disposed on the movement path of the hook, and a head portion integrally formed with the insertion protrusion and having a larger diameter than the insertion protrusion, and the moving member is inserted with the insertion protrusion A through hole may be formed.

The hinge device according to an embodiment may further include a cable having one end coupled to the hinge bracket and the other end coupled to the interlocking member.

The hinge bracket may include a coupling mechanism to which the cables are coupled, and a cable coupling groove to which the cables are coupled may be formed in the interlocking member.

A hinge device according to another embodiment includes an elastic member providing an elastic force in a direction in which a door is closed, a rope having one end connected to the elastic member, a rope guide for changing the moving direction of the rope, coupled to the other end of the rope, and a locking protrusion is formed It includes an interlocking member, a hinge bracket provided in the door, separated from the interlocking member when the door is closed, and having a hook formed so as to be caught on the engaging protrusion of the interlocking member when the door is opened, and the interlocking member is the movement of the hook It may include a stopper disposed on the path to limit the range of movement of the hook.

A hinge device according to another embodiment includes an elastic member providing an elastic force in a door closing direction, a rope having one end connected to the elastic member, a rope guide for changing the direction of movement of the rope, coupled to the other end of the rope, and a locking protrusion is formed an interlocking member provided in the door, separated from the interlocking member when the door is closed, and a hinge bracket having a hook formed so as to be caught on the engaging protrusion of the interlocking member when the door is opened, and one end is coupled to the hinge bracket, , the other end may include a cable coupled to the interlocking member.

A dishwasher according to an embodiment includes a cabinet, a tub mounted on the cabinet to provide a washing space therein, a base coupled to the tub to support the tub, a door rotatably mounted in front of the tub, and the aforementioned hinge device. may include

By improving the hinge device for rotatably supporting the door in the dishwasher according to the present invention, the door is rotated only by a predetermined angle to partially open the door. In addition, the door is rotated only by a predetermined angle to partially open, so that moisture and heat in the tub can be discharged.

In addition, by sufficiently extending the length of the tip of the hook in the dishwasher according to the present invention, it is possible to effectively suppress the detachment from the interlocking member of the hook, the sudden full opening of the door, and the occurrence of injury to the user and damage to the dishwasher. there is.

In addition, in the dishwasher according to the present invention, by providing a stopper for limiting the movement of the hook in the interlocking member, it is possible to prevent separation from the interlocking member of the hook, the sudden full opening of the door, and the occurrence of injury to the user and damage to the dishwasher. can be effectively suppressed.

In addition, the hinge device according to the present invention is provided with a cable connecting the hinge bracket and the interlocking member, so that even when the hook of the hinge bracket leaves the interlocking member, the elastic member elastically supports the door to sufficiently prevent the sudden full opening of the door. can be suppressed Accordingly, it is possible to effectively suppress the detachment of the hook from the interlocking member, the sudden opening of the door, and the occurrence of injury to the user and damage to the dishwasher.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a schematic cross-sectional view of a dishwasher according to an embodiment.
2 is a cross-sectional view for explaining a hinge device according to an embodiment.
FIG. 3 is an enlarged view of part A of FIG. 2 .
4 is a cross-sectional view illustrating a state in which the door is opened due to its own load.
FIG. 5 is an enlarged view of part B of FIG. 4 .
6 is a side view of a hinge bracket according to an embodiment.
7 is a side view of an interlocking member according to an embodiment.
8 is a view showing the arrangement of the hinge bracket and the interlocking member in the hinge device according to an embodiment.
9 is a view showing the arrangement of the hinge bracket and the interlocking member in the hinge device according to another embodiment.
10 is a perspective view illustrating a part of a hinge device according to another embodiment.
11 is a side view of FIG. 10 ;
12 is a front view of FIG. 10 .
13 is a perspective view illustrating a part of a hinge device according to another embodiment.
FIG. 14 is a view for explaining the operation of the hinge device shown in FIG. 13 .

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, it goes without saying that the first component may be the second component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless otherwise stated, and when “C to D” is used, it means that there is no specific opposite description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

1 is a schematic cross-sectional view of a dishwasher 100 according to an exemplary embodiment.

The dishwasher 100 according to an embodiment includes a cabinet 110 forming an exterior, a tub 120 mounted on the cabinet 110 to provide a washing space therein, and a washing object provided inside the tub 120 . The racks 162 and 164 that provide the space to be accommodated, the spray arms 172 and 174 that spray wash water to the racks 162 and 164, the sump 130 that recovers the wash water sprayed into the tub 120, A pump 140 for supplying the washing water stored in the sump 130 to the spray arms 172 and 174 is included.

A base 114 may be provided under the cabinet 110 , and the base 114 may form a lower exterior of the cabinet 110 . The cabinet 110 may be coupled to the tub 120 to support the tub 120 .

The racks 162 and 164 may include an upper rack 162 and a lower rack 164 positioned under the upper rack 162 .

A door 112 for opening and closing the tub 120 is provided in the cabinet 110, and the upper rack 162 and the lower rack 164 may be provided to be drawn out from the tub 120 when the door 112 is opened. . That is, rails for guiding the movement of the racks 162 and 164 toward the door 112 are provided on the inner circumferential surface of the tub 120 , and the racks may further include rollers supported by the rails. The door 112 may be rotatably mounted in front of the tub 120 .

The sump 130 includes a water reservoir 131 in which washing water is stored, a sump cover 122 that is located above the water reservoir to separate the tub 120 from the water reservoir 131, and a sump cover ( It may include an inclined surface 132 that connects to 122 . In this case, the sump cover 122 may further include a recovery hole 123 provided to pass through the sump cover 122 and supplying washing water to the water storage unit 131 .

Here, the recovery hole 123 may be provided only in an area located above the water storage unit 131 among the areas provided by the sump cover 122 , or may be provided in the entire area of the sump cover 122 to provide the tub 120 . It may be provided to supply internal washing water to the inclined surface 132 . The inclined surface 132 may be inclined at a predetermined angle toward the water storage unit 131 to guide the washing water flowing in through the recovery hole 123 to the water storage unit 131 .

The tub 120 is preferably located in the upper space of the sump cover 122, which includes the recovery hole 123 and the inclined surface 132 without a separate device for the washing water sprayed to the tub through the spray arms 172 and 174. This is so that it can be recovered to the water storage unit 131 through the

Here, the sump cover 122 may be provided in any shape as long as it can divide the internal space of the cabinet 110 , and the inclined surface 132 may be fixed to the lower portion of the sump cover 122 .

On the other hand, the inclined surface 132 may be provided to cover the entire lower space of the sump cover 122 (the planar area of the sump cover and the planar area of the body are the same), or may be provided to cover only the space where the recovery hole 123 is formed. there is.

Meanwhile, the water storage unit 131 may be provided by bending the sump cover 122 concavely toward the bottom surface of the cabinet 110 . However, the cross-sectional area of the water reservoir 131 is preferably provided to have an area smaller than the area of the inclined surface 132 , but inclined downward toward the water reservoir 131 .

When the cross-sectional area of the water storage unit 131 is provided to have an area smaller than the area of the inclined surface 132, the pump 140 can be located in the lower region of the inclined surface 132 where the water storage unit 131 is not provided. The volume of the washing machine 100 may be minimized.

The water storage unit 131 receives washing water through the water supply passage 133 connected to the water supply source, and the washing water stored in the water storage unit 131 is supplied to the outside of the cabinet 110 through the drainage passage 134 and the drain pump 135 . is emitted as

The spray arms 172 and 174 are provided inside the tub 120 to wash the washing object stored in the lower rack 164, the lower arm 174, and the upper arm for washing the washing object stored in the upper rack 162. (172).

Here, the lower arm 174 and the upper arm 172 are supplied with washing water through the pump 140 and the supply passage 150 , and the supply passage 150 is a lower arm connection passage connected to the lower arm 174 . 152 , an upper arm connection passage 151 connected to the upper arm 172 , and a switching valve 153 for selectively opening each connection passage 152 , 151 may be included.

On the other hand, when the lower arm 174 is rotatably provided inside the tub 120 , the lower arm 174 is rotatably coupled to the holder 124 provided in the sump cover 122 , and the lower arm connection passageway. 152 may be provided to supply washing water to the holder 124 .

Also, if the upper arm 172 is rotatably provided inside the tub 120 , the upper arm 172 may be rotatably coupled to the upper arm connection passage 151 .

The pump 140 includes a pump housing 141 provided with an impeller 144, an inlet 143 through which washing water is introduced into the pump housing 141, an outlet 142 through which washing water inside the pump housing 141 is discharged, A motor 145 provided outside the pump housing 141 to rotate the impeller 144 may be included.

Here, the inlet 143 is connected to the water reservoir 131 through the inlet connecting pipe 146 , and the outlet 142 is connected to the switching valve 153 through the outlet connecting pipe 147 .

Accordingly, when electric power is supplied to the motor 145 and the impeller 144 rotates, the water flowing into the pump housing 141 from the sump 130 moves to the selector valve 153 through the outlet 142 and switches The water supplied to the valve 153 is supplied to the upper arm 172 or the lower arm 174 along the connection passages 151 and 152 opened by the switching valve 153 .

On the other hand, the pump 140 is fixed inside the cabinet 110 through an insulating part 148, and the insulating part attenuates the vibration generated in the pump 140 so that the vibration generated in the pump 140 is transmitted to the sump 130 and It is a means to prevent transmission to the cabinet (110).

The insulating part provided in the present invention not only separates the outer peripheral surface of the pump 140 and the bottom surface of the cabinet 110 by a predetermined distance, but also separates the outer peripheral surface of the pump 140 and the sump 130 by a predetermined distance. can be provided.

The door 112 is provided at the front of the cabinet 110 to open and close the open side of the tub 120 . As shown in FIG. 2 , the door 112 is rotatably fastened to the lower portion of the cabinet 110 by a hinge device 200 .

Hereinafter, the hinge device 200 of the dishwasher 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view for explaining the hinge device 200 according to an embodiment. FIG. 3 is an enlarged view of part A of FIG. 2 .

Although one hinge device 200 is shown in FIG. 2 , the hinge device 200 may be provided as a pair on both sides of the dishwasher 100 , and thus other devices related to the hinge device 200 are also a pair. can be provided as Hereinafter, unless otherwise specified, the hinge device 200 and other devices related thereto are considered to be provided as a pair, respectively.

A guide groove 118 and a hinge space 119 for mounting a hinge device 200 to be described later may be formed under the base 114 of the cabinet 110 .

The guide groove 118 is a space for the elastic member 250 to be installed and tensioned, and is formed to extend from the rear of the base 114 to the front, and the rear end of the elastic member 250 is located at the rear of the guide groove 118 . A fixed mounting portion 117 may be formed.

And, the hinge space 119 is a space in which the interlocking member 220 and the rope guide 230 are installed, and may be formed in front of the base 114 , that is, in front of the guide groove 118 . A mounting rib 115 on which the interlocking member 220 is seated may be formed in the front of the hinge space 119 , that is, at the lower portion of the door 112 .

The door 112 is mounted such that a hinge bracket 210 is coupled to the lower inner side thereof, and both lower sides of the door 112 are rotated on both front sides of the base 114 so that the door 112 rotates with respect to the cabinet 110 . possible to be mounted.

The hinge device 200 may include an elastic member 250 , a rope 240 , a rope guide 230 , an interlocking member 220 , and a hinge bracket 210 .

The elastic member 250 may provide an elastic force in a direction in which the door 112 is closed.

The elastic member 250 is fastened to the holder 117 formed at the rear end of the guide groove 118 of the base 114 at the rear end thereof, and the front end of the elastic member 250 is provided on the rope 240. A rope connection part 242 is connected.

Here, the elastic member 250 may be provided as a coil spring that is extensibly mounted to the guide groove 118 provided in the horizontal direction on the base 114 . In addition, the elastic member 250 may be provided as a tension spring that generates an elastic force, that is, a restoring force when stretched.

When the elastic member 250 is rotated to open the door 112 , the elastic force generated while being pulled and extended by the rope 240 acts as a resistance force against the opening of the door 112 . Accordingly, it is possible to prevent the door 112 from being opened at too fast a speed due to its own weight (self-load) and thus being subjected to an impact due to its own weight.

The elastic member 250 pulls the rope 240 while contracting when the door 112 is closed, thereby exerting a restoring force in the direction in which the door 112 is closed, thereby helping the user to close the door 112 with a small force.

The rope 240 may have one end connected to the elastic member 250 and the other end connected to the interlocking member 220 . The rope 240 may be formed of a flexible material.

The rope 240 is provided with an interlocking member 220 at the front end, and the rope connection part 242 is provided at the rear end of the rope 240 . For example, the rope connection part 242 may be formed so that the rear end of the rope 240 is insert-injected to be integrated with the rope 240 and fixed to the front end of the elastic member 250 . Similarly, the interlocking member 220 may be inserted and fixed at the tip of the rope 240 .

The rope 240 is provided by passing the rope guide 230 in a zigzag form in a state of being fixed to the elastic member 250 by the rope connection part 242, and the interlocking member 220 provided at the tip of the rope 240. may be mounted on and fixed to the mounting rib 115 formed in front of the base 114 by the elastic force of the elastic member 250 .

That is, the interlocking member 220 may be detachably mounted on the mounting rib 115 by the elastic force of the elastic member 250 transmitted to the rope 240 .

The rope guide 230 may change the moving direction of the rope 240 . The rope guide 230 may include a first sliding surface 234 in contact with the upper surface of the rope 240 and a second sliding surface 236 in contact with the lower surface of the rope 240 .

That is, the rope guide 230 may switch the moving direction of the rope 240 pulled by the elastic member 250 from the expansion and contraction direction of the elastic member 250 to the rotational direction of the hinge bracket 210 .

The rope guide 230 is formed with a fixing hole for rotatably fastening to the hinge space 119 of the base 114 on one side, and a first curved shape supporting the upper surface of the rope 240 around the fixing hole. A sliding surface 234 is formed, the second sliding surface 236 is formed to support the lower surface of the rope 240 is spaced apart from the first sliding surface 234 by a predetermined angle.

The rope 240 may transmit the elastic force of the elastic member 250 to the interlocking member 220 while passing through the first sliding surface 234 and the second sliding surface 236 of the rope guide 230 in a zigzag form.

The first sliding surface 234 and the second sliding surface 236 are to be formed concavely along the extension direction of the curved shape so as to slidably support the rope 240 and prevent the rope 240 from easily falling out from the support surface. can In addition, the first sliding surface 234 and the second sliding surface 236 may be formed to be convex and convex along the extension direction of the curved shape in order to reduce the contact area with the rope 240 .

The interlocking member 220 is coupled to the other end of the rope 240 , and a locking protrusion 226 may be formed. The interlocking member 220 is fixed to the front end of the rope 240, and as the door 112 rotates by a predetermined angle or more when the door 112 is opened, it is mounted on the hinge bracket 210 of the door 112 to be moved. can At this time, the interlocking member 220 is connected to the elastic member 250 by a rope 240 , and when the door 112 is opened and closed, the elastic force of the elastic member 250 may be transmitted from the rope 240 . The interlocking member 220 will be described in more detail with reference to the drawings below.

A hinge bracket 210 is provided on the door 112 and is separated from the interlocking member 220 when the door 112 is closed, and is separated from the interlocking member 220 when the door 112 is opened. A hook 211 (hook) may be formed so as to be caught by the locking projection 226 . The hinge bracket 210 will be described in more detail with reference to the drawings below.

4 is a cross-sectional view illustrating a state in which the door 112 is opened due to its own weight. FIG. 5 is an enlarged view of part B of FIG. 4 . 6 is a side view of the hinge bracket 210 according to an embodiment. 7 is a side view of the interlocking member 220 according to an embodiment.

First, the hinge bracket 210 and the interlocking member 220 will be described in detail with reference to FIGS. 6 and 7 .

Referring to FIG. 6 , the hinge bracket 210 may include a fastening plate 212 and a locking plate 214 . The fastening plate 212 may be fastened to the door 112 . The locking plate 214 is formed to extend from the fastening plate 212 toward the interlocking member 220 , and the hook 211 may be formed therein.

A fastening plate 212 for fastening to the door 112 may be formed on one side of the hinge bracket 210 . On the other side of the hinge bracket 210, the door 112 is spaced apart from the interlocking member 220 by a predetermined distance (D2 in FIGS. 8 and 9) in a closed state to close the tub 120 so that the door 112 can be freely rotated. A locking plate 214 mounted on the interlocking member 220 is formed when the door 112 is rotated at a predetermined angle to open the tub 120 while forming a flow interval that can be flowed.

The hook 211 is a portion of the engaging plate 214 that extends toward the interlocking member 220 , and may include a groove forming portion 2111 and a tip portion 2112 .

A locking groove 216 in which the locking protrusion 226 is seated may be formed in the groove forming part 2111 . The tip portion 2112 is formed by being bent from the groove forming portion 2111 , and when the door 112 is closed, its longitudinal direction may have a generally linear shape toward the locking protrusion 226 .

The hook 211 is inserted into the interlocking member 220 and moves inside the interlocking member 220 when the door 112 rotates, so that the engaging groove 216 may be caught by the engaging projection 226 .

Referring to FIG. 7 , the interlocking member 220 may include a rope fastening groove 222 , an insertion groove 224 , a locking protrusion 226 , and a seating groove 228 .

The rope fastening groove 222 may be formed in an appropriate portion of the interlocking member 220 so that the rope 240 is inserted. The rope 240 and the interlocking member 220 are integrally manufactured by insert injection so that the rope 240 is fixed to the interlocking member 220 with the end of the rope 240 inserted into the rope fastening groove 222. can be

The insertion groove 224 may be formed so that the locking plate 214 is inserted. Referring to FIGS. 10 and 12 to be described below, the insertion groove 224 may be formed so that the engaging plate 214 of the hinge bracket 210 can be movably inserted in the front and rear directions of the interlocking member 220 . there is. A locking protrusion 226 may be formed in a predetermined portion of the insertion groove 224 .

The locking protrusion 226 is formed in the insertion groove 224 and may be provided to be spaced apart from the locking groove 216 when the door 112 is closed.

The locking protrusion 226 is spaced apart from the locking groove 216 of the locking plate 214 formed on the hinge bracket 210 in a state in which the door 112 is completely closed by a predetermined distance (D2 in FIGS. 8 and 9). It is formed to be such that, as the door 112 is opened at a predetermined angle, the locking groove 216 of the locking plate 214 may be formed at a position where it is mounted on the locking protrusion 226 .

That is, when the door 112 is completely closed, the locking protrusion 226 of the interlocking member 220 and the locking groove 216 of the hinge bracket 210 are spaced apart by a predetermined distance (D2 in FIGS. 8 and 9). As the door 112 is rotated and opened, the locking groove 216 of the hinge bracket 210 is mounted on the locking protrusion 226 of the interlocking member 220 so that the hinge bracket 210 is connected to the interlocking member. 220 may be formed to pull.

A seating groove 228 into which the holding rib 115 is inserted may be formed in the interlocking member 220 . At this time, the seating groove 228 may be mounted on the mounting rib 115 by the elastic force of the elastic member 250 .

That is, when the interlocking member 220 receives the elastic force in the contraction direction of the elastic member 250 by the rope 240, the seating groove 228 is seated on the mounting rib 115 of the base 114, The interlocking member 220 may be mounted on the mounting rib 115 .

Hereinafter, an opening process of the dishwasher 100 will be described with reference to FIGS. 2 to 5 . 2 and 3 show the hinge device 200 in a state in which the door 112 of the dishwasher 100 is closed, and in FIGS. 4 and 5, the hinge device 200 in a state in which the door 112 is opened by its own weight ( 200) is shown.

As shown in FIGS. 2 and 3 , the state of the hinge part 200 when the door 112 is completely closed is that the rope 240 connected to the elastic member 250 is the first of the rope guide 230 . The sliding surface 234 and the second sliding surface 236 are in contact with the pulling state of the interlocking member 220 is maintained.

At this time, the interlocking member 220 maintains a state in which the seating groove 228 of the interlocking member 220 is mounted on the mounting rib 115 of the base 114 by the elastic force transmitted by the rope 240 . In addition, when the door 112 is completely closed, the locking groove 216 formed in the locking plate 214 of the hinge bracket 210 fastened to the door 112 is inserted into the insertion groove 224 of the interlocking member 220 . In the state in which the interlocking member 220 is separated from the locking protrusion 226 by a predetermined distance, the state is maintained.

Meanwhile, it is necessary to partially open the door 112 in order to discharge moisture or heat remaining in the interior of the dishwasher 100 after the operation of the dishwasher 100 is completed. In this case, the door 112 may not be fully opened but only partially opened.

As shown in FIGS. 4 and 5 , when a partial opening of the door 112 is required, as the locking device of the door 112 is released, the hinge bracket 210 provided in the door 112 is installed on the door 112 . ) is rotated like the door 112 according to the opening.

The door 112 rotates freely by the interval (D2 in FIGS. 8 and 9) between the locking groove 216 formed in the locking plate 214 of the hinge bracket 210 and the locking protrusion 226 of the interlocking member 220. As the door 112 rotates, the locking groove 216 of the locking plate 214 is mounted on the locking protrusion 226 on the interlocking member 220 to limit the rotation of the door 112 .

Here, when the external force applied to the door 112 is removed, the locking groove 216 of the locking plate 214 may maintain a state mounted on the locking protrusion 226 on the interlocking member 220 .

In this state, the self-weight of the door 112 and the elastic force of the elastic member 250 pulling the door 112 are balanced with each other, so that the door 112 maintains an open state by its own weight.

On the other hand, when the door 112 is completely opened, the door 112 rotates as the user applies an external force in the direction in which the door 112 is opened, and the latching plate of the hinge bracket 210 fastened to the door 112 . As the 214 is rotated, the interlocking member 220 is pulled and moved.

That is, as the door 112 is rotated, the locking groove 216 formed in the locking plate 214 is further rotated while being mounted on the locking protrusion 226 of the interlocking member 220 , and is applied to the door 112 . The locking plate 214 is rotated in a direction in which the door 112 is opened while overcoming the elastic force of the elastic member 250 transmitted to the interlocking member 220 by an external force.

In addition, the interlocking member 220 is separated from the holding rib 115 of the base 114 while being pulled by the engaging plate 214 of the hinge bracket 210 and moved along the engaging plate 214, and the interlocking member 220 ) as it moves, the rope 240 connected to the interlocking member 220 extends the elastic member 250 while sliding along the first sliding surface 234 and the second sliding surface 236 of the rope guide 230 . .

Accordingly, the interlocking member 220 is separated from the mounting rib 115 of the base 114 and moved while being mounted on the engaging plate 214 of the hinge bracket 210 , and the elastic member 250 is separated from the interlocking member 220 . ) while fully extended by the rope 240 connected to the door 112 can be fully opened.

In the embodiment, by improving the hinge device 200 for rotatably supporting the door 112 , the door 112 is rotated only by a predetermined angle to partially open the door 112 . In addition, the door 112 is rotated only by a predetermined angle to partially open, so that moisture and heat in the tub 120 can be discharged.

8 is a view showing the arrangement of the hinge bracket 210 and the interlocking member 220 in the hinge device 200 according to an embodiment. 9 is a view showing the arrangement of the hinge bracket 210 and the interlocking member 220 in the hinge device 200 according to another embodiment. 8 and 9 show the arrangement of the hinge bracket 210 and the interlocking member 220 when the door 112 is closed.

Referring to FIG. 8 , in the hinge device 200 according to an embodiment, when the door 112 is closed, the distance between the lowermost point of the locking groove 216 and the end of the tip 2112 is defined as The first distance (D1) may be shorter than the second distance (D2) defined as the distance between the lowermost point of the locking groove 216 and the lowermost point of the locking protrusion 226 .

However, in the hinge device 200 having the structure of FIG. 8 , when the door 112 is opened, the hook 211 is not caught on the locking protrusion 226 , and the interlocking member 220 can be separated as it is. This is when the door 112 is closed, the tip 2112 and the locking projection 226 of the hook 211 are spaced apart by the second distance ((D2) - the first distance ((D1)), and the door ( This is because, when the 112 is opened, the tip portion 2112 can pass through the insertion groove 224 of the interlocking member 220 without being caught by the locking protrusion 226 through the separation space.

When the hook 211 leaves the interlocking member 220 , the hinge bracket 210 is not limited in movement by the rope 240 and the elastic member 250 , so the door 112 by its own weight moves at a high speed. can be opened

When the door 112 is opened by its own weight, it exhibits an operation similar to free fall due to the self-weight of the door 112 , injuring a user near the dishwasher 100 , or by the dishwasher 100 itself. may cause damage to

Accordingly, in the hinge device 200 having a structure in which the first distance (D1) is shorter than the second distance (D2) shown in FIG. 8, the hook 211 is separated from the interlocking member 220 and the In order to suppress the sudden opening of the door 112 due to the need, it is necessary to additionally provide a stopper 221 or a cable 260 to be described below.

Referring to FIG. 9 , in the hinge device 200 according to another embodiment, when the door 112 is closed, the distance between the lowermost point of the locking groove 216 and the end of the tip 2112 is defined as The first distance (D1) may be formed to be longer than the second distance (D2) defined as the distance between the lowermost point of the locking groove 216 and the lowermost point of the locking protrusion 226 .

In the structure shown in FIG. 9, since there is no space between the tip 2112 and the locking protrusion 226, in the vertical direction in the drawing, there is no space between the tip 2112 and the locking protrusion 226. (226) is always caught, and the locking groove 216 may be necessarily seated on the locking projection 226.

Accordingly, in the hinge device 200 having the structure shown in FIG. 9 , the hook 211 does not leave the interlocking member 220 in the process of opening the door 112 , so the rotation speed of the door 112 is the rope 240 . ) and the elastic member 250 may be limited.

Accordingly, abrupt opening of the door 112 is suppressed, thereby effectively suppressing injury to a user near the dishwasher 100 or damage to the dishwasher 100 .

10 is a perspective view showing a part of the hinge device 200 according to another embodiment. 11 is a side view of FIG. 10 ; 12 is a front view of FIG. 10 .

In the hinge device 200 according to another embodiment, the interlocking member 220 may further include a stopper 221 . The stopper 221 may be disposed on the movement path of the hook 211 to limit the movement range of the hook 211 .

The stopper 221 is inserted into the interlocking member 220, a portion is formed integrally with the insertion protrusion 2211 disposed on the movement path of the hook 211, and the insertion protrusion 2211, and the insertion It may include a head 2212 having a larger diameter than the protrusion 2211 .

The interlocking member 220 may have a through hole 223 into which the insertion protrusion 2211 is inserted. The through hole 223 may be formed through a sidewall of the interlocking member 220 to communicate with the insertion groove 224 of the interlocking member 220 .

12 , when the stopper 221 is mounted on the interlocking member 220 , a portion of the insertion protrusion 2211 is disposed in the insertion groove 224 , and in the insertion groove 224 of the hook 211 . Movement route can be restricted. Accordingly, the hook 211 may come down only to the upper end of the insertion protrusion 2211 in the vertical direction on the interlocking member 220 .

Accordingly, even if the hook 211 moves downward of the interlocking member 220 as the door 112 is opened, the hook 211 is blocked by the stopper 221 and the upper end of the tip 2112 is a locking protrusion ( 226) Since it does not come down below the lower end, it can be suppressed that the hook 211 is separated from the interlocking member 220 .

The distance between the stopper 221 and the locking protrusion 226 may be appropriately selected in consideration of the length of the tip 2112 so that the hook 211 does not deviate from the interlocking member 220 .

At this time, since the stopper 221 sufficiently restricts the movement in the vertical direction of the interlocking member 220 of the hook 211, the length of the tip 2112 may be selected from any of the embodiments shown in FIG. 8 or FIG. free

That is, the hinge device 200 is, as shown in FIG. 8, when the door 112 is closed, the second defined by the distance from the lowest point of the locking groove 216 to the end of the tip 2112. One distance (D1) may be shorter than a second distance (D2) defined as the distance between the lowermost point of the locking groove 216 and the lowermost point of the locking protrusion 226 .

In another embodiment, as shown in FIG. 9 , when the door 112 is closed, the first distance (D1) may be formed to be longer than the second distance (D2).

In the embodiment, by providing a stopper 221 restricting the movement of the hook 211 to the interlocking member 220, the hook 211 is separated from the interlocking member 220, thereby abruptly fully opening the door 112 , it is possible to effectively suppress the occurrence of injury to the user and the occurrence of damage to the dishwasher 100 .

13 is a perspective view showing a portion of the hinge device 200 according to another embodiment. FIG. 14 is a view for explaining the operation of the hinge device 200 shown in FIG. 13 .

The hinge device 200 according to another embodiment may further include a cable 260 having one end coupled to the hinge bracket 210 and the other end coupled to the interlocking member 220 . The cable 260 may be formed of a flexible material.

The hinge bracket 210 may include a coupling mechanism 213 to which the cable 260 is coupled. The coupling mechanism 213 may be provided on the engaging plate 214 of the hinge bracket 210 , for example. The coupling mechanism 213 may use any screws, bolts, etc., as long as it stably couples the cable 260 to the hinge bracket 210 . An end of the cable 260 may be provided with, for example, a ring-shaped ring to be coupled to the coupling mechanism 213 .

A cable fastening groove 225 to which the cable 260 is fastened may be formed in the interlocking member 220 . The cable fastening groove 225 may be formed in an appropriate portion of the interlocking member 220 so that the cable 260 is inserted. The cable 260 and the interlocking member 220 are integrally manufactured by insert injection so that the cable 260 is fixed to the interlocking member 220 with the end of the cable 260 inserted into the cable fastening groove 225 . can be

The cable 260 may connect the hinge bracket 210 and the interlocking member 220 to each other. Accordingly, even when the hook 211 is separated from the interlocking member 220 , the hinge bracket 210 may receive elastic force from the elastic member as shown in FIG. 14 .

Due to this structure, even when the hook 211 is separated from the interlocking member 220 . The door 112 to which the hinge bracket 210 is coupled may be supported by the elastic member 250 . Therefore, even when the hook 211 leaves the interlocking member 220 , the elastic member 250 can pull the door 112 , so that the sudden full opening of the door 112 due to its own weight can be suppressed.

In the embodiment, the hinge device 200 is provided with a cable 260 connecting the hinge bracket 210 and the interlocking member 220 , so that the hook 211 of the hinge bracket 210 leaves the interlocking member 220 . Even in this case, the elastic member 250 elastically supports the door 112 to sufficiently suppress the sudden full opening of the door 112 .

Accordingly, it is possible to effectively suppress the detachment of the hook 211 from the interlocking member 220 , the sudden full opening of the door 112 , the occurrence of injury to the user and the occurrence of damage to the dishwasher 100 .

At this time, since the sudden opening of the door 112 can be suppressed by the cable 260 , the length of the tip 2112 may be selected from any of the embodiments shown in FIG. 8 or FIG. 9 .

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various methods can be obtained by those skilled in the art within the scope of the technical spirit of the present invention. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

100: dishwasher 110: cabinet
112: door 114: base
115: rib 120: tub
200: hinge device 210: hinge bracket
211: hook 2111: groove forming part
2112: tip 212: fastening plate
213: coupling mechanism 214: engaging plate
216: locking groove 220: interlocking member
221: stopper 2211: insertion projection
2212: head 222: rope fastening groove
223: through hole 224: insertion groove
225: cable fastening groove 226: locking projection
228: seating groove 230: rope guide
234: first sliding surface 236: second sliding surface
240: rope 242: rope connection
250: elastic member 260: cable
D1: first distance D2: second distance

Claims (14)

an elastic member providing an elastic force in a direction in which the door is closed;
a rope having one end connected to the elastic member;
a rope guide for changing the direction of movement of the rope;
an interlocking member coupled to the other end of the rope and having a locking protrusion; and
A hinge bracket provided in the door, separated from the interlocking member when the door is closed, and having a hook formed so as to be caught by the engaging protrusion of the interlocking member when the door is opened
including,
The hook is
a groove forming part in which a locking groove in which the locking protrusion is seated is formed; and
A tip portion formed by bending from the groove forming portion
including,
When the door is closed,
A first distance defined as the distance between the lowermost point of the locking groove and the end of the tip is formed longer than a second distance defined as the distance between the lowermost point of the locking groove and the lowermost point of the locking projection,
hinge device. According to claim 1,
The hinge bracket is
a fastening plate fastened to the door; and
A locking plate extending from the fastening plate toward the interlocking member and having the hook formed therein.
containing,
hinge device. 3. The method of claim 2,
The interlocking member is
a rope fastening groove to which the rope is connected;
an insertion groove formed so that the locking plate is inserted; and
The locking projection is formed in the insertion groove and provided to be spaced apart from the locking groove when the door is closed.
containing,
hinge device. 4. The method of claim 3,
A holding rib in which the interlocking member is seated is formed at a lower portion of the door, and a seating groove into which the holding rib is inserted is formed in the interlocking member,
hinge device. 5. The method of claim 4,
The seating groove is mounted on the mounting rib by the elastic force of the elastic member,
hinge device. According to claim 1,
The rope guide is
a first sliding surface in contact with the upper surface of the rope; and
The second sliding surface in contact with the lower surface of the rope
comprising,
hinge device. According to claim 1,
The elastic member,
It is provided with a coil spring and a tension spring,
hinge device. According to claim 1,
The interlocking member is
and a stopper disposed on the movement path of the hook to limit the movement range of the hook,
hinge device. 9. The method of claim 8,
The stopper is
an insertion protrusion inserted into the interlocking member, a portion of which is disposed on a movement path of the hook; and
The head is formed integrally with the insertion protrusion and has a larger diameter than the insertion protrusion.
including,
The moving member is
A through hole into which the insertion protrusion is inserted is formed,
hinge device. According to claim 1,
Further comprising a cable having one end coupled to the hinge bracket and the other end coupled to the interlocking member,
hinge device. 11. The method of claim 10,
The hinge bracket includes a coupling mechanism to which the cable is coupled;
A cable fastening groove to which the cable is fastened is formed in the interlocking member,
hinge device. an elastic member providing an elastic force in a direction in which the door is closed;
a rope having one end connected to the elastic member;
a rope guide for changing the direction of movement of the rope;
an interlocking member coupled to the other end of the rope and having a locking protrusion; and
A hinge bracket provided in the door, separated from the interlocking member when the door is closed, and having a hook formed so as to be caught by the engaging protrusion of the interlocking member when the door is opened
including,
The interlocking member is
and a stopper disposed on the movement path of the hook to limit the movement range of the hook,
hinge device. an elastic member providing an elastic force in a direction in which the door is closed;
a rope having one end connected to the elastic member;
a rope guide for changing the direction of movement of the rope;
an interlocking member coupled to the other end of the rope and having a locking protrusion;
a hinge bracket provided on the door, separated from the interlocking member when the door is closed, and having a hook formed so as to be caught by the engaging protrusion of the interlocking member when the door is opened; and
A cable having one end coupled to the hinge bracket and the other end coupled to the interlocking member
containing,
hinge device. cabinet;
a tub mounted on the cabinet to provide a cleaning space therein;
a base coupled to the tub to support the tub;
a door rotatably mounted in front of the tub; and
The hinge device according to any one of claims 1, 12 and 13
containing,
dish washer.

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