CN113494220A - Door hinge structure of dish washing machine and dish washing machine - Google Patents

Abstract

The invention discloses a door hinge structure of a dish washing machine and the dish washing machine, comprising: the first hinged plate is fixedly arranged on the box body; the second hinge plate is fixedly arranged on the door body and is hinged with the first hinge plate; one end of the bracket can be arranged on the first hinged plate in a vertically sliding mode, and the other end of the bracket is hinged to the second hinged plate; the adjusting structure is provided with a connecting plate which can be adjusted up and down and is arranged on the bracket, and a spring which gives upward tension to the connecting plate. The adjusting structure is arranged, so that the adjusting structure can be adjusted according to different weights of the door body, and the door opening angle is ensured to be unchanged after the door plates with different weights are installed; the adjusting structure is provided with a connecting plate which can be adjusted up and down and is arranged on the support, and a spring which gives upward tensile force to the connecting plate, the upper position and the lower position of the connecting plate relative to the support are adjusted, the motion state of the door plate after being opened or the tensile force of the spring are adjusted, the requirements of users are met, the structure is simple, and the adjustment is convenient.

Description

Door hinge structure of dish washing machine and dish washing machine

Technical Field

The invention belongs to the technical field of dish washing machines, and particularly relates to a door hinge structure of a dish washing machine and the dish washing machine.

Background

At present, with the improvement of living standard of people, the dish washing machine is more and more widely applied to life. The embedded dish washer has larger capacity, is mainly embedded into a cabinet for use, and is integrated with the cabinet in appearance after being provided with a door plate, so that the whole kitchen is more attractive, and the embedded dish washer is widely applied. The embedded dish washer is mostly embedded into the cabinet for use, and the consistency of the overall appearance of the cabinet can be maintained after the door plate is installed, so that the embedded dish washer is widely applied. However, the door plates corresponding to different types of cabinets have different weights, and when the weight of the door plate is light, the opening angle after the door is automatically opened is too small, so that ventilation and drying are not facilitated, peculiar smell is easily generated, and user experience is influenced; when door plant weight is heavier, open the door after automatic opening the door angle too big, can occupy great space, be unfavorable for planning the mounted position.

At present, the purpose that the door body is pushed to a specific angle by pushing devices such as a gear rack and the like in the embedded dish washing machine is achieved, and the purpose that the door is automatically opened at a proper angle after door plates with different weights are installed in a certain range. However, the structure is complex and easy to break down; and the motor is needed to drive, the cost is higher, and the requirement on a control circuit is higher.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a door hinge structure of a dish washing machine, which can ensure a determined door opening angle after door plates with different weights are installed so as to meet the requirements of users, and has the advantages of simple structure and convenient adjustment.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a door hinge structure of a dishwasher, provided between a cabinet and a door body of the dishwasher, includes:

the first hinged plate is fixedly arranged on the box body;

the second hinge plate is fixedly arranged on the door body and is hinged with the first hinge plate;

one end of the bracket can be arranged on the first hinged plate in a vertically sliding mode, and the other end of the bracket is hinged to the second hinged plate;

the adjusting structure is provided with a connecting plate which can be adjusted up and down and is arranged on the bracket, and a spring which gives upward tension to the connecting plate.

Furthermore, a third hinge shaft is arranged between the connecting plate and the support, a waist circular hole matched with the third hinge shaft is formed in the connecting plate, and the third hinge shaft is arranged on the support and can be located in the waist circular hole in a vertical sliding mode.

Furthermore, the adjusting structure is also provided with an adjusting column which is used for adjusting the position of the connecting plate and stopping the connecting plate from moving upwards.

Furthermore, the adjusting column is arranged on the first hinge plate in a manner of being capable of moving up and down through threaded connection.

Furthermore, the upper end of first flap is equipped with and is used for the installation adjust the mounting panel of post, it fixes to adjust the post through threaded connection on the mounting panel, it is located to adjust the post the upper end of connecting plate.

Furthermore, a third hinge shaft is arranged between the connecting plate and the support, a waist circular hole matched with the third hinge shaft is formed in the connecting plate, and the third hinge shaft is rotatably arranged on the support and can be vertically adjusted to be fixed in the waist circular hole.

Furthermore, the spring is provided with a support rod connected with the connecting plate and a spring body sleeved outside the support rod, and a support cap stopped at the upper side of the spring body is arranged at the top of the support rod.

Furthermore, an outward upper folding edge is arranged at the upper end of the first hinged plate, a through hole for the supporting rod to penetrate through is formed in the upper folding edge, a spring seat sleeved on the outer side of the supporting rod is arranged on the upper folding edge, and the spring seat is located on the lower side of the spring body.

Furthermore, a connecting claw is arranged on one side, far away from the door body, of the connecting plate, and a hook matched with the connecting claw is arranged at the lower end of the supporting rod.

Furthermore, a front sliding groove and a rear sliding groove which are arranged in parallel and used for realizing the vertical sliding of the connecting plate are respectively arranged on the front side and the rear side of the first hinged plate.

Furthermore, a front sliding block matched with the front sliding groove and a rear sliding block matched with the rear sliding groove are arranged on the connecting plate, and the assembling position of the front sliding block on the connecting plate is higher than that of the rear sliding block.

Furthermore, be equipped with first connecting axle between connecting plate and the preceding slider, be equipped with the second connecting axle between connecting plate and the back slider, the setting is just inclining forward upwards to the line between first connecting axle and the second connecting axle.

Furthermore, a second hinge shaft is arranged between the bracket and the second hinge plate; a connecting line between the second hinge shaft and the third hinge shaft is arranged forwards and downwards in a downward inclined mode; when the door body is opened in place, a connecting line between the first connecting shaft and the second connecting shaft is perpendicular to a connecting line between the second hinge shaft and the third hinge shaft.

Furthermore, the front side and the rear side of the first hinged plate are respectively provided with an outward front folded edge and an outward rear folded edge, the front sliding groove is formed in the front folded edge, and the rear sliding groove is formed in the rear folded edge.

Furthermore, a first vertical sliding groove is formed in the first hinge plate, a first sliding block matched with the first sliding groove is arranged on the support, and the first sliding block is located in the first sliding groove.

Furthermore, the first hinge plate and the second hinge plate are hinged through a first hinge shaft, the support and the second hinge plate are hinged through a second hinge shaft, and the first hinge shaft and the second hinge shaft are arranged in parallel at intervals.

Furthermore, a limiting structure used for limiting the door body to be opened in place is arranged between the first hinge plate and the support, and the limiting structure comprises a limiting column arranged on the first hinge plate and a limiting protrusion arranged on the support.

Furthermore, when the door body is opened in place, the limiting column blocks the bracket, and further blocks the door body from being opened continuously.

Furthermore, spacing post is circular, the support has support body and protrusion the spacing of support body is protruding, spacing protruding with be equipped with between the support body with spacing post assorted arc recess.

Further, the support is a flat plate of an integrated structure, the support is provided with a support body and a limiting protrusion protruding out of the support body, the support body is provided with a first arm assembled with the first hinge plate, a second arm hinged with the second hinge plate and an arc-shaped connecting portion connected with the first arm and the second arm, and the limiting protrusion is arranged on the arc-shaped connecting portion.

Further, the included angle between the first arm and the second arm is 110-160 degrees.

Furthermore, the door body is provided with a door shell and a door plate capable of sliding up and down relative to the door shell, and the door hinge structure further comprises a sliding door structure which is matched with the support and used for realizing the up-and-down sliding of the door plate relative to the door shell in the opening and closing process of the door body.

Furthermore, the sliding door structure is provided with a door sliding block fixedly arranged on the door plate and a transmission assembly arranged between the support and the door sliding block and used for transmitting pushing force.

Furthermore, one end of the support, which is close to the door body, is provided with a tooth part, the transmission assembly is provided with a first rack matched with the tooth part, and in the opening and closing process of the door body, the support moves and the tooth part pushes the first rack to move up and down.

Further, the transmission assembly is also provided with a second rack for pushing the door slider and the gear set for connecting between the first rack and the second rack.

Furthermore, the first sliding block is provided with a claw protruding backwards, the upper end of the second rack is provided with a clamping head matched with the claw, and the clamping head is clamped in the claw.

Furthermore, the clamping jaw is provided with a clamping cavity with a downward opening and matched with the clamping head, the clamping cavity is arc-shaped, and the width of the opening of the clamping jaw is smaller than the diameter of the clamping cavity.

Furthermore, a second slide way is arranged on the door shell, the second rack is slidably located in the second slide way, and an extending opening used for enabling the clamping jaw to extend backwards into the second slide way is formed in the second slide way.

Furthermore, a second sliding groove used for containing the second sliding rail is formed in the door shell.

Furthermore, be equipped with the spacing post of direction that extends backward on the door plant set up on the door casing with the spacing post assorted direction constant head tank of direction spacing post slidable is located in the direction constant head tank.

Furthermore, the rear end of the guide limiting column is provided with a positioning cap, the size of the positioning cap is equal to the width of the guide positioning groove, and the positioning cap is positioned at the rear side of the guide positioning groove.

Furthermore, the top end of the guide positioning groove is provided with a mounting opening through which the positioning cap can pass.

Furthermore, the second hinged plate is provided with a second hinged plate body hinged with the first hinged plate, a bending bottom plate bending inwards and extending along the front end of the second hinged plate body, and a bending side plate bending backwards and extending along the inner side of the bending bottom plate, and the second hinged plate body, the bending bottom plate and the bending side plate surround to form a first slide way for accommodating the first rack.

Further, the gear set is mounted on the second hinge plate.

Based on the door hinge structure of the dish washing machine, the washing machine is further provided with the door hinge structure, the door opening angle can be ensured after the door plates with different weights are installed, so that the requirements of users are met, the structure is simple, and the adjustment is convenient.

A dishwasher, comprising:

a case having an opening of a front side;

the door body is hinged at the opening of the box body in an opening and closing way,

the door hinge structure is arranged between the box body and the door body of the dishwasher.

Compared with the prior art, the invention has the advantages and positive effects that: by arranging the adjusting structure, the adjusting structure can be adjusted according to different weights of the door body, so that the door opening angle is ensured to be unchanged after the door plates with different weights are installed; the adjusting structure is provided with a connecting plate which can be adjusted up and down and is arranged on the support, and a spring which gives upward tensile force to the connecting plate, and the movement state of the door plate after being opened or the tensile force of the spring can be adjusted by adjusting the up-and-down position of the connecting plate relative to the support, so that the requirements of users can be met, the structure is simple, and the adjustment is convenient.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a first embodiment of a door hinge structure of a dishwasher according to the present invention;

FIG. 2 is a schematic view of an exploded structure at the door body of FIG. 1;

FIG. 3 is an enlarged schematic view of region A in FIG. 2;

FIG. 4 is a schematic structural diagram of a door hinge with a closed door body;

FIG. 5 is a schematic structural view of a door hinge during the opening process of a door body;

FIG. 6 is a schematic structural diagram of a door hinge in a state that a door body is opened in place;

FIG. 7 is a schematic view of an exploded structure of a door hinge;

FIG. 8 is an enlarged view of the bracket of FIG. 7;

FIG. 9 is an enlarged schematic view of the adjustment mechanism of FIG. 7;

FIG. 10 is an enlarged view of the connection plate of FIG. 9;

FIG. 11 is an enlarged schematic view of the transmission assembly of FIG. 7;

FIG. 12 is an enlarged schematic view of the door slider of FIG. 7;

FIG. 13 is a schematic view of the structure of the door slider and the second runner;

FIG. 14 is a schematic structural view of a second embodiment of a door hinge structure of a dishwasher according to the present invention;

fig. 15 is an enlarged view of the structure of fig. 14 at the connection plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the positional relationships shown in the drawings, and the directions near the axis of the inner tube are "inner" and vice versa. The terminology is for the purpose of describing the invention only and is for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and is not to be considered limiting of the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 15, which are first embodiments of a door hinge structure of a dishwasher according to the present invention, a door panel 22 of a door body 20 is removed in fig. 1 in order to show a door hinge structure 30; the door hinge structure 30 is provided between the cabinet 10 and the door 20 of the dishwasher, the cabinet 10 has an opening at the front side, and the door 20 is hinge-coupled at the opening of the cabinet 10 in an openable and closable manner. The door hinge structure 30 includes: the door comprises a first hinge plate 31, a second hinge plate 32, a bracket 35 and an adjusting structure 36, wherein the first hinge plate 31 and the second hinge plate 32 are hinged through a first hinge shaft 33, the first hinge plate 31 is fixed on the box body 10, a door frame 12 is arranged at an opening at the front side of the box body 1, the upper end and the lower end of the first hinge plate 31 are fixed on the door frame 12 and fixed on a base 11, and the second hinge plate 32 is fixed on the door body 20. One end of the bracket 35 is slidably arranged on the first hinge plate 31, and the other end is hinged on the second hinge plate 32; the adjusting structure 36 has a connecting plate 361 provided on the bracket 35 and adjustable up and down, and a spring 362 for pulling the connecting plate 361 upward.

By arranging the adjusting structure 36, the adjusting structure 36 can be adjusted according to different weights of the door body 20, so that the door opening angle is ensured to be unchanged after door plates with different weights are installed; the adjusting structure 36 has a connecting plate 361 capable of being adjusted up and down and arranged on the bracket 35, and a spring 362 for providing upward tension to the connecting plate 361, and the movement state of the door panel 22 after being opened or the tension of the spring 362 can be adjusted by adjusting the up-and-down position of the connecting plate 361 relative to the bracket 35, so as to meet the requirements of users.

Referring to fig. 3 to 6, in order to realize the slidably adjustable hinge connection between the connecting plate 361 and the bracket 35, a third hinge shaft 363 is disposed between the connecting plate 361 and the bracket 35, a waist-round hole 3611 extending up and down is disposed on the connecting plate 361, and the waist-round hole 3611 is matched with the third hinge shaft 363. In this embodiment, the third hinge shaft 363 is disposed on the bracket 35, and the third hinge shaft 363 may be fixed on the bracket 35, or the third hinge shaft 363 may be rotatably disposed on the bracket 35, and the third hinge shaft 363 may be located in the oval hole 3611 in a vertical sliding manner. By forming the oval hole 3611 on the connecting plate 361, the connecting plate 361 can be adjusted in the vertical direction, so that the third hinge shaft 363 can be located at any position in the vertical direction of the oval hole 3611 when the door body 20 is in a closed state, and the distance between the third hinge shaft 363 and the lower end of the oval hole 3611 is defined as L when the door body 20 is in the closed state; after the door body 20 starts to be opened, the upper end of the bracket 35 slides downwards, the lower end of the bracket 35 rotates along with the door body 20, when the downward moving distance of the upper end of the bracket 35 is less than L, the bracket 35 is not pulled upwards by the spring 362, and the door body 20 rotates and falls under the action of gravity; when the upper end of the bracket 35 moves downward by a distance equal to L, the third hinge shaft 363 slides to the lower end of the oval hole 3611, and in the case that the bracket 35 has the potential energy of moving downward, the connecting plate 361 is pulled to have a tendency of moving downward, and the spring 362 gives an upward pulling force, so that the door body 20 rotates to open under the pulling force of the spring 362 and the gravity. In the case that only the connecting plate 361 is adjustable up and down, the larger the distance L between the third hinge shaft 363 and the lower end of the oval hole 3611 when the door 20 is in the closed state, the larger the speed of the door 20 when the spring 362 starts to apply a pulling force to the door 20, that is, the larger the inertia, the larger the force that the door 20 can overcome the spring 362 is, and the larger the opening angle when the door 20 is suspended in a balanced manner. The same distance between the third hinge shaft 363 and the lower end of the waist-round hole 3611 is L, and when the door bodies 20 with different weights are different, the opening angles of the door bodies 20 during the stress balance suspension are different; specifically, the greater the weight of the door 20, the greater the opening angle of the door 20. Therefore, when the weight of the door body 20 is increased, the connecting plate 361 needs to be adjusted to move downward, so that the distance between the third hinge shaft 363 and the lower end of the oval hole 3611 is decreased to L, thereby ensuring the opening angle when the door body 20 is suspended in a balanced manner.

At the initial stage when the door 20 starts to open, the door 20 does not receive the pulling force of the spring 362, and moves only under the action of the gravity of the door 20 until the third hinge shaft 363 contacts with the lower end of the kidney-shaped hole 3611, and pulls the connecting plate 361, and at this time, the door 20 moves under the combined action of the elastic force of the spring 362 and the gravity of the door 20 until the movement stops. The initial positions of the third hinge shaft 363 and the connecting plate 361 determine the distance of the free movement of the door 20, that is, the distance L between the third hinge shaft 363 and the lower end of the oval hole 3611 affects the speed of the door 20 when the free movement is finished, and further affects the distance of the door 20 in the stage of the combined action of the elasticity of the spring 362 and the gravity, and finally results in the difference of the door opening angle of the door 20.

For the adjustment of the up-down position of the connecting plate 361, the adjusting structure 36 further has an adjusting column 365 for adjusting the position of the connecting plate 361, and the adjusting column 365 is further used for stopping the connecting plate 361 from moving upwards to play a role in limiting; after the position of the connecting plate 361 is adjusted, the position of the connecting plate 361 is unchanged when the door 20 is closed, and the position needs to be adjusted again basically when the dishwasher is used. The adjustment post 365 is threadably secured, and the adjustment post 365 is secured to the first hinge plate 31 at an upper end of the connecting plate 361. When the adjusting column 365 moves downwards, the connecting plate 361 moves downwards, the position of the third hinge shaft 363 is unchanged, the distance L between the third hinge shaft 363 and the lower end of the waist-round hole 3611 is increased, the free movement distance of the door body 20 is increased, the speed of the door body 20 is increased when the free movement is finished, the distance is increased in the stage of comprehensive action of elasticity and gravity, and the door opening angle of the door body 20 is increased. Aiming at the door panels 20 with different weights, the door opening angle of the door body 20 can be changed in a stepless manner by adjusting the upper position and the lower position of the column 365, so that the door opening angle under the door bodies with different weights is constant. The difference between the vertical size of the oval hole 3611 formed in the connecting plate 361 and the diameter of the third hinge shaft 363 determines the adjustment range of the adjustment structure 36, and the larger the difference is, the larger the weight range of the door panel 20 that can be adapted by the structure is.

Referring to fig. 9, for the installation of the adjusting column 365, an installation plate 312 for installing the adjusting column 365 is arranged at the upper end of the first hinge plate 31, a thread is arranged at the outer side of the adjusting column 365, a threaded hole matched with the adjusting column 365 is formed in the installation plate 312, and the adjusting column 365 is located at the upper end of the connection plate 361.

The spring 362 has a supporting rod 3622 connected to the connecting plate 361 and a spring body 3621 sleeved outside the supporting rod 3622, and a supporting cap 3623 stopped on the upper side of the spring body 3621 is disposed at the top of the supporting rod 3622. An outward upper folding edge 313 is arranged at the upper end of the first hinge plate 31, a through hole for the supporting rod 3622 to pass through is formed in the upper folding edge 313, a spring seat 3624 sleeved on the outer side of the supporting rod 3622 is arranged on the upper folding edge 313, and the spring seat 3624 is located on the lower side of the spring body 3621. The spring body 3621 is located between the spring body 3621 and the supporting cap 3623, and when the connecting plate 361 moves downwards, the supporting rod 3622 is pulled to move downwards, so that the spring body 3621 is further compressed, and the upward spring force is transmitted to the connecting plate 361 through the supporting rod 3622. The connecting claw 3612 is arranged on one side, far away from the door body 20, of the connecting plate 361, so that the distance between the pulling force of the spring and the door body 20 is increased, the moment on the door body 2 is increased, and the hook 3625 matched with the connecting claw 3612 is arranged at the lower end of the supporting rod 3622.

The connecting plate 361 is arranged on the first hinge plate 31 in a vertically sliding mode, and the connecting plate 361 is arranged at the upper end of the support 35 in a vertically adjustable mode, so that the upper end of the support 35 is guaranteed to slide on the first hinge plate 31 in the vertical direction. In order to ensure the sliding of the connecting plate 361 in the vertical direction and to transmit the elastic force of the spring 362 to the bracket 35, a front sliding groove 314 and a rear sliding groove 315 are provided in parallel on the front and rear sides of the first hinge plate 31, respectively, and the front sliding groove 314 and the rear sliding groove 315 are used for realizing the vertical sliding of the connecting plate 361. The connecting plate 361 is provided with a front sliding block 366 matched with the front sliding groove 314 and a rear sliding block 367 matched with the rear sliding groove 315, the assembling position of the front sliding block 366 on the connecting plate 361 is higher than that of the rear sliding block 367 on the connecting plate 361, namely the front sliding block 366 and the rear sliding block 367 are arranged in the forward and upward inclined direction, so that after the door body 20 is opened, the tension of the bracket 35 extending upwards and forwards is facilitated, and the stress of the connecting plate 361 is stable. Specifically, a first connecting shaft 3661 is arranged between the connecting plate 361 and the front slider 366, a second connecting shaft 3671 is arranged between the connecting plate 361 and the rear slider 367, and a connecting line between the first connecting shaft 3661 and the second connecting shaft 3671 is arranged in an upward and forward inclining manner. A second hinge shaft 34 is arranged between the bracket 35 and the second hinge plate 32; a connecting line between the second hinge shaft 34 and the third hinge shaft 363 is arranged forward and downward; preferably, when the door body 20 is opened to a certain position, a connecting line between the first connecting shaft 3661 and the second connecting shaft 3671 is perpendicular to a connecting line between the second hinge shaft 34 and the third hinge shaft 363; the stress on the connecting plate 361 is stable, and the elastic force on the spring 362 is stably transmitted to the bracket 35. The front and rear sides of the first hinge plate 31 are respectively provided with a front folded edge and a rear folded edge, the front sliding groove 314 is arranged on the front folded edge, and the rear sliding groove 315 is arranged on the rear folded edge.

The bracket 35 has one end slidably provided on the first hinge plate 31 following the connecting plate 361 and the other end hinge-connected to the second hinge plate 32. The bracket 35 is hinged to the second hinge plate 32 by a second hinge shaft 34, and the first hinge shaft 33 and the second hinge shaft 34 are spaced in parallel. When the door body 20 is opened, the second hinge plate 32 and the door body 20 rotate forward together, the second hinge shaft 34 rotates around the first hinge shaft 33 along with the door shell 21, the end of the bracket 35 hinged to the second hinge plate 32 also rotates forward together, the upper end of the bracket 35 moves downward, and the lower end of the bracket 35 rotates, so that the bracket 35 moves along with the opening and closing of the door body 20.

A limiting structure for limiting the opening position of the door body 20 is arranged between the first hinge plate 31 and the bracket 35, and the limiting structure comprises a limiting column 316 arranged on the first hinge plate 31 and a limiting projection 351 arranged on the bracket 35. After the door body 20 is opened to a certain position, the limiting column 316 stops the bracket 35 from moving continuously, so as to stop the door body 20 from opening continuously. Through setting up limited structure for the biggest opening angle of door body 20 is fixed, and gives the oblique ascending pulling force of the door body 20 who opens the target position through second hinge 32, is favorable to the stability after door body 20 opens.

The limiting column 316 is arranged to be circular, the bracket 35 is provided with a bracket body 350 and a limiting projection 351 projecting out of the bracket body 350, and an arc-shaped groove 353 matched with the limiting column 316 is arranged between the limiting projection 351 and the bracket body 350; through setting up arc recess 353 and spacing post 316 for circularly, be favorable to increasing the area of contact between spacing post 316 and the support 35, increase the support of limiting post 316 to support 35 to it is not high to make the cooperation precision requirement between limiting post 316 and the spacing protruding 351, it has the deviation slightly to both limit post 316 and the relative position between the spacing protruding 351, also can realize spacing cooperation through the guide of the cambered surface contact between limiting post 316 and the spacing protruding 351.

The bracket 35 is a flat plate with an integrated structure, the bracket body 35 has a first arm 3501 assembled with the first hinge plate 31, a second arm 3502 hinged with the second hinge plate 32, and an arc-shaped connecting part 3503 connecting the first arm 3501 and the second arm 3502, and the limiting protrusion 351 is arranged on one side of the arc-shaped connecting part 3503 away from the door body 20. An included angle between the center line of the first arm 3501 and the center line of the second arm 3502 is 110 ° to 160 °, preferably, an included angle between the center line of the first arm 3501 and the center line of the second arm 3502 is 130 ° to 140 °, and the bracket 35 is disposed in a vertical plane.

In the embodiment, the dishwasher is a built-in dishwasher, and the door 20 has a door housing 21 fixed to the second hinge plate 32 and a door panel 22 located at the front side of the door housing 21, mainly different door panels 22 result in door 20 with different weights. The embedded dish washer is mainly embedded into a cabinet for use, and is integrated with the cabinet in appearance after a door plate is installed, so that the whole kitchen is more attractive, and the embedded dish washer is widely applied. However, in order to maintain the overall aesthetic property, the door panel should shield the box body of the embedded dishwasher, which leads to the interference between the door panel and the base or the external environment during the door opening and closing process, aggravates the abrasion of the door panel, and damages the connection structure between the door panel and the embedded dishwasher, thereby affecting the overall appearance and performance. Therefore, the door plate can slide up and down in the process of opening and closing the door, so that the interference between the door plate and the base or the external environment is avoided.

The door body 20 is provided with a door shell 21 and a door panel 22 capable of sliding up and down relative to the door shell 21, the door panel 22 is positioned on the front side of the door shell 21, the door panel 22 is the front end surface of the door shell 21, and the door panel 22 and the door shell 21 are arranged in parallel; the sliding door structure 37 is used for realizing the up-and-down sliding of the door panel 22 relative to the door shell 21 during the opening and closing of the door body 20. In the opening process of the door body 20, the door body 20 rotates forwards and downwards around the first hinge shaft 33 to be opened, the door shell 21 and the door body 22 rotate and move synchronously, and meanwhile, the door plate 22 slides upwards relative to the door shell 21, the door body 20 is preferably arranged to be opened to be in a horizontal state, namely, the opening angle is 90 degrees, so that the bowl racks in the box body 10 can be taken and placed conveniently; during the closing process of the door body 20, the door body 20 is rotated backward and upward around the first hinge shaft 33 to be closed, that is, the door shell 21 and the door body 22 are synchronously rotated and moved, and the door panel 22 slides downward relative to the door shell 21. Through the arrangement of the sliding door structure 37, the door panel 22 can slide up and down relative to the door shell 21 in the door opening and closing process, and in the door body 20 opening process, the door panel 22 rotates to open along with the door shell 21 and moves upwards relative to the door shell 21, so that the lower end of the door panel 22 moves upwards, is far away from the base 11 of the box body 10, and is beneficial to avoiding the interference between the door panel 22 and the base 11 or the external environment; in the door closing process, the door panel 22 sliding upwards is reset, so that the door body 20 is closed to shield the box body 10 of the embedded dishwasher; the interference between the door panel 22 and the base 11 or the external environment is avoided on the premise of not reducing the length of the door panel 22 and adjusting the external environment. The door frame 12 is arranged at the opening at the front side of the box body 1, the upper end of the first hinge plate 31 is fixed on the door frame 12, the lower end is fixed on the base 11, the second hinge plate 32 is fixed on the door body 20, in particular on the door shell 21 of the door body 20, and the door body 20 is also provided with a door liner 23 fixedly arranged at the rear side of the door shell 21.

The sliding door structure 37 has a door slider 371 fixed on the door panel 22, a transmission assembly 372 arranged between the bracket 35 and the door slider 371 and used for transmitting pushing force; specifically, a tooth portion 352 is disposed at the hinged end of the bracket 35 and the second hinge plate 32, and a first rack 3721 matching with the tooth portion 352 is disposed on the transmission assembly 372, and the tooth portion 352 is engaged with the first rack 3721. During the opening and closing of the door body 20, the bracket 35 moves, and the tooth portion 352 moves rotationally about the third hinge shaft 354 relative to the door housing 21, thereby pushing the first rack 3721 to move up and down relative to the door housing 21.

The transmission assembly 372 also has a second rack 3722 for pushing the door slider 42 and a gear set 3723 for connecting between the first rack 3721 and the second rack 3722. By providing the second rack 3722 and the gear set 3723, the distance of movement of the second rack 3722 can be different from that of the first rack 3721 by setting the tooth pitch of the first rack 3721 and the second rack 3722, and the pushing force of the second rack 3722 to the slider 42 can be adjusted.

The second hinge plate 32 has a second hinge plate body 321 hinged to the first hinge plate 31, a bent bottom plate 322 bent inward and extending along a front end of the second hinge plate body 321, and a bent side plate 323 bent rearward and extending along an inner side of the bent bottom plate 322. The bracket 35 is arranged on the outer side of the first hinge plate 31 and the inner side of the second hinge plate body 321; in order to engage the tooth portion 352 with the first rack 3721, the first rack 3721 is disposed inside the second hinge plate body 321. The second hinge plate body 321, the bent bottom plate 322 and the bent side plate 323 surround to form a first slideway for accommodating the first rack 3721; the first slide is directly arranged on the second hinge plate 32, so that a special slide structure is avoided, the structure is simple, and the tooth part 352 is meshed with the first rack 3721. The gear set 3723 is mounted on the second hinge plate 32, the first mounting hole 324 and the second mounting hole 325 are coaxially formed in the second hinge plate body 321 and the bent side plate 323, respectively, the gear set 3723 has a first gear and a second gear which are coaxially formed, and a tooth pitch of the second gear is larger than a tooth pitch of the first gear.

In order to transmit the pushing force on the second rack 3722 to the door slider 371, the door slider 371 is provided with a slider body 3711 fixed with the door panel 22 and a claw 3712 protruding backwards along the slider body 3711; an extending opening 3731 for the claw 3712 to extend backwards is formed in the second slideway 373, and the claw 3712 is located at the upper part of the second rack 3722; when the second rack 3722 moves upward, the pushing claw 3712 moves upward together, and when the second rack 3722 moves downward, the door panel 22 also moves downward under its own weight, and the second rack 3722 holds the door panel 22 and moves downward together.

The clamping of the clamping claw 3712 and the second rack 3722 is favorable for the second rack 3722 to push the door slider 371 to move stably, and the door slider 21 can be slidably assembled with the door casing, so that the door panel 22 and the door casing 21 are arranged in parallel and can move up and down relatively. The upper end of the second rack 3722 is provided with a clamp 37221 matched with the claw 3712, and the clamp 37221 is positioned in the claw 3712. The claw 3712 has a downward opening cavity 3713, the cavity 3713 is matched with the clamp 37221, the cavity 3713 is arc-shaped, and the width of the opening of the cavity 3713 is smaller than the diameter of the cavity 3713.

A second slideway 373 is arranged on the door shell 21, the second rack 432 is slidably positioned in the second slideway 373, and in order to transmit the pushing force on the second rack 3722 to the second slider 371, the second slider 371 is provided with a slider body 3711 fixed with the door plate 22 and a claw 3712 protruding backwards along the slider body 3711; an extending opening 3731 for the claw 3712 to extend backwards is formed in the second slideway 373, and the claw 3712 is located at the upper part of the second rack 3722; when the second rack 3722 moves upward, the pushing claw 3712 moves upward together, and when the second rack 3722 moves downward, the door panel 22 also moves downward under its own weight, and the second rack 432 holds the door panel 22 and moves downward together.

Referring to fig. 14 to 15, a second embodiment of a door hinge structure of a dishwasher according to the present invention is shown, and the present embodiment is mainly different from the first embodiment in that: the third hinge shaft is vertically adjustable in the fixed oval hole so that the tension applied to the connecting plate 361 by the spring 362 is different, and other structures may be the same as those of the first embodiment.

The third hinge shaft 363 is rotatably disposed on the bracket 35, and the third hinge shaft 363 is vertically adjustable and fixed in the oval hole 3611. The connecting plate 361 can be adjusted in the up-down direction by forming a waist-round hole 3611 on the connecting plate 361, and the third hinge shaft 363 is fixed in the waist-round hole 3611 after adjustment; when the door body 20 is in a closed state, the connecting plate 361 is adjusted in the vertical direction, so that the tension applied to the connecting plate 361 by the spring 362 is different, namely the tension applied to the bracket 35 is different; the door body 20 is rotated and opened under the pulling force of the spring 362 and the gravity of the door body 20, and as the opening angle of the door body 20 increases, the compressed amount of the spring 362 also increases, and the elastic force provided by the spring 362 also increases; when the door body 20 is closed, the connecting plate 361 is adjusted downward, so that the initial tension of the spring 362 is increased, and in the opening process of the door body 20, the tension of the spring 362 is continuously increased, so that the opening angle of the door body 20 is reduced; when the weight of the door body 20 is increased, the connecting plate 361 needs to be adjusted to move downwards, so that the distance between the third hinge shaft 363 and the lower end of the waist-round hole 3611 is reduced, and the opening angle of the door body 20 when the door body is suspended in a balanced stress manner is ensured.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The utility model provides a door hinge structure of dish washer establishes between the box and the door body of dish washer, its characterized in that includes:

the first hinged plate is fixedly arranged on the box body;

the second hinge plate is fixedly arranged on the door body and is hinged with the first hinge plate;

one end of the bracket can be arranged on the first hinged plate in a vertically sliding mode, and the other end of the bracket is hinged to the second hinged plate;

the adjusting structure is provided with a connecting plate which can be adjusted up and down and is arranged on the bracket, and a spring which gives upward tension to the connecting plate.

2. The door hinge structure according to claim 1, wherein a third hinge shaft is provided between the connecting plate and the bracket, a kidney-round hole matched with the third hinge shaft is provided on the connecting plate, and the third hinge shaft is provided on the bracket and is located in the kidney-round hole in a manner of sliding up and down.

3. The door hinge structure according to claim 1, wherein the adjusting structure further has an adjusting post for adjusting the position of the connecting plate and stopping the connecting plate from moving upward.

4. The door hinge structure according to claim 1, wherein a third hinge shaft is provided between the connecting plate and the bracket, a kidney-round hole matched with the third hinge shaft is provided on the connecting plate, and the third hinge shaft is rotatably provided on the bracket and is fixed in the kidney-round hole in a vertically adjustable manner.

5. The door hinge structure according to any one of claims 1 to 4, wherein the spring has a support rod connected to the connecting plate, a spring body sleeved outside the support rod, and a support cap stopped at an upper side of the spring body is provided at a top of the support rod.

6. The door hinge structure according to claim 5, wherein an outward upper folded edge is formed at the upper end of the first hinge plate, a through hole for the support rod to pass through is formed in the upper folded edge, a spring seat sleeved on the outer side of the support rod is arranged on the upper folded edge, and the spring seat is located on the lower side of the spring body.

7. The door hinge structure according to any one of claims 1 to 4, wherein a front slide groove and a rear slide groove for allowing the connecting plate to slide up and down are provided in parallel on front and rear sides of the first hinge plate, respectively.

8. The door hinge structure according to claim 7, wherein a front slider matched with the front sliding groove and a rear slider matched with the rear sliding groove are provided on the connecting plate, and an assembling position of the front slider on the connecting plate is higher than that of the rear slider.

9. The door hinge structure according to claim 8, wherein a first connecting shaft is provided between the connecting plate and the front slider, a second connecting shaft is provided between the connecting plate and the rear slider, and a connecting line between the first connecting shaft and the second connecting shaft is inclined upward and forward; a second hinge shaft is arranged between the bracket and the second hinge plate; when the door body is opened in place, a connecting line between the first connecting shaft and the second connecting shaft is perpendicular to a connecting line between the second hinge shaft and the third hinge shaft.

10. A dishwasher, comprising:

a case having an opening of a front side;

the door body is hinged at the opening of the box body in an opening and closing way,

the door hinge structure of any one of claims 1 to 9, provided between a cabinet and a door body of the dishwasher.

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