Household appliance

Abstract

The utility model discloses a household appliance, belongs to the field of household appliances, solves the problem that a door body is easy to lift due to lower processing precision, and adopts the technical scheme that the household appliance mainly comprises a machine body, the door body, a hinge supporting piece and a door hinge, the hinge supporting piece is provided with a hinge shaft, and the hinge shaft is provided with a limiting block; the door hinge is provided with a mounting hole, a first guide wall and a second guide wall, a guide hole is formed between the first guide wall and the second guide wall, the limiting block enters and exits the guide hole when the door body is at a specific opening angle beta, and a first limiting face and a second limiting face which are located on the same rotating plane with the limiting block are arranged on the two sides of the guide hole respectively. The first limiting face is formed by partially blanking the first guide wall, and when the door body is in a closed state, the limiting block abuts against the first limiting face to prevent the door body from moving upwards relative to the machine body. According to the utility model, the punched first limiting surface has higher precision, so that the lifting height when the door body is closed can be greatly reduced.

Description

[Technical Field]

[0001] This utility model relates to the field of household appliance technology, and in particular to household appliances. [Background Technology]

[0002] With the improvement of living standards, household appliances have become indispensable products for every household. In most existing household appliances, the door hinges and hinge supports are connected together by fasteners. This connection method is relatively reliable, but it leads to low installation efficiency of the door.

[0003] The prior art CN217269561U discloses a household appliance, including a hinge support member disposed on the appliance body and a door hinge disposed on the door body. The hinge support member is provided with a hinge shaft, and a limiting block is provided at one outer end of the hinge shaft. The door hinge is provided with a receiving groove and a moving channel. Both sides of the moving channel are provided with outward protrusions located on the same rotation plane as the limiting block. When the door body and the appliance body are at a specific angle, the moving channel is aligned with the hinge shaft, allowing the hinge shaft to slide relative to the moving channel, so that the hinge shaft reaches the receiving groove or disengages from the moving channel, thereby realizing the installation and disassembly of the door body and the appliance body. When the angle between the door body and the appliance body is greater than or less than the specific angle, the limiting block of the hinge shaft will abut against the outward protrusion on one side of the moving channel, thereby preventing the hinge shaft from sliding relative to the moving channel, thus limiting the door body from detaching from the appliance body and reducing the risk of the door body falling off the appliance body.

[0004] The aforementioned patent refers to the protruding part of the door hinge that protrudes from the moving channel. The protrusion is directed away from the main body. This protrusion is formed by bending sheet metal through stamping. However, the precision of the stamped protrusion is difficult to control. In order to ensure that the limiting block and the protrusion do not interfere with each other, a large gap is usually required. Some household appliances have seals at the bottom of the door and the main body. When the door and the main body are closed, the compression and rebound of the seal will cause the door to be raised. Due to the large gap, the door will move upward relative to the main body and cause a large misalignment, making it impossible for the door to close properly, thus affecting the normal use of the household appliance. [Utility Model Content]

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a household appliance in which the first limiting surface is partially punched out from the first guide wall, so that the matching accuracy between the first limiting surface and the limiting block is higher, and the lifting height when the door is closed can be greatly reduced.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A household appliance includes a body, a door, a hinge support on the body, and a door hinge on the door. The hinge support has a hinge shaft, and the end face of the hinge shaft has a limiting block. The door hinge has a mounting hole that rotatably engages with the hinge shaft, and a first guide wall and a second guide wall disposed opposite to each other. A guide hole communicating with the mounting hole is formed between the first guide wall and the second guide wall. The limiting block enters and exits the guide hole when the door is at a specific opening angle β. A first limiting surface and a second limiting surface located on the same rotation plane as the limiting block are respectively provided on both sides of the guide hole. The first limiting surface is partially punched from the first guide wall. When the door is in the closed state, the limiting block abuts against the first limiting surface to prevent the door from moving upward relative to the body.

[0008] In the aforementioned household appliance, the bottom of the limiting block is provided with a first arc surface, and the first limiting surface or the second limiting surface cooperates with the first arc surface to prevent the limiting block from coming out of the guide hole. Both the first limiting surface and the second limiting surface are curved surfaces.

[0009] In the aforementioned household appliance, the door hinge includes a body and a first limiting plate protruding from the outer surface of the body. The mounting hole is provided on the body, a first guide wall is formed on one side of the first limiting plate, and the side of the first limiting plate opposite to the guide hole is connected to the body.

[0010] In the aforementioned household appliance, the door hinge includes a body and a second limiting plate protruding from the outer surface of the body. The mounting hole is provided on the body, the second limiting plate is connected to the body, a second guide wall is formed on one side of the second limiting plate, and the second limiting surface is provided on the second limiting plate to prevent the limiting block from dislodging from the guide hole when the door opening angle is greater than a specific opening angle β.

[0011] In the aforementioned household appliance, the second limiting plate has a transition area connected to the body, and the outer surface of the transition area is formed with the second limiting surface.

[0012] In the aforementioned household appliance, the side of the second limiting plate opposite to the guide hole is connected to the main body, and the side of the second limiting plate forming the second guide wall is partially punched to form the second limiting surface.

[0013] In the aforementioned household appliance, the outer periphery of the limiting block includes two straight surfaces symmetrically arranged about a first center line and two arc surfaces connected between the two ends of the two straight surfaces. The two opposing straight surfaces are parallel to each other and the distance between them is less than or equal to the distance between the first guide wall and the second guide wall. The diameter of the circle shared by the two opposing arc surfaces is greater than the distance between the first guide wall and the second guide wall.

[0014] In the aforementioned household appliances, the angle between the first center line and the vertical plane is β.

[0015] In the aforementioned household appliances, the distance between the end of the first guide wall away from the mounting hole and the end of the second guide wall away from the mounting hole gradually increases in the direction away from the mounting hole.

[0016] In the aforementioned household appliances, the door hinge is a one-piece stamped metal part.

[0017] The beneficial effects of this utility model are:

[0018] 1. In this utility model, the first limiting surface is partially punched from the first guide wall, which allows for higher processing precision and better matching accuracy between the first limiting surface and the limiting block. This significantly reduces the gap between the first limiting surface and the limiting block, thereby reducing the lifting height of the door when it closes. This ensures precise fit between the door and the machine body, reducing the possibility of misalignment that could prevent the door from closing. Furthermore, the punched section of the first limiting surface not only provides higher processing precision but also reduces the processing difficulty. Secondly, only on the door... When the door is at a specific opening angle β, the limiting block can enter and exit the guide hole. Therefore, when the door is closed or the opening angle of the door is greater than or less than β, the limiting block will abut against the first limiting surface or the second limiting surface, thereby preventing the door from moving upward relative to the main body. This achieves a stable connection between the door and the main body, reduces the possibility of the door separating from the main body, and makes the connection between the door and the main body more stable and reliable. When it is necessary to disassemble the door, it is only necessary to open the door to the specific opening angle β, making the installation and disassembly of the door and the main body simpler and more convenient, so as to facilitate the maintenance and cleaning of household appliances.

[0019] 2. The bottom of the limiting block is provided with a first arc surface. Both the first and second limiting surfaces are curved surfaces, which makes the contact and separation between the first arc surface and the first or second limiting surface smoother. This effectively avoids interference between the limiting block and the first or second limiting surface, preventing jamming or even jamming. This allows the limiting block to cooperate with the first and second limiting surfaces to restrict the door from detaching from the machine body while ensuring that the door can rotate smoothly relative to the machine body, so that the door can reach the closed state and have a larger opening angle. In addition, the use of arc and curved surface structures makes the contact between the limiting block and the first and second limiting surfaces smoother and more uniform, reducing the possibility of local wear on the limiting block, the first and second limiting surfaces, and the second limiting surface. This helps to improve the wear resistance of the limiting block, the first and second limiting surfaces, and the second limiting surface, thereby extending the service life of the limiting block, the first and second limiting surfaces.

[0020] 3. The first limiting plate protrudes from the outer surface of the main body, so that the first limiting plate and the limiting block are on the same rotation plane. This ensures that the limiting block and the door hinge can maintain contact after relative rotation, thereby achieving the abutment fit between the limiting block and the first limiting surface. This prevents the door from moving upward relative to the main body, making the connection between the door and the main body more stable and reliable. In addition, the first guide wall is formed on the side of the first limiting plate facing the limiting block, which can increase the contact area when the limiting block and the first limiting surface abut, making the abutment fit between the limiting block and the first limiting surface more stable and reliable. At the same time, it can also disperse the force on the limiting block and the first limiting surface, reducing the possibility of local deformation or damage to the limiting block and the first limiting surface, and helping to extend the service life of the limiting block and the first limiting surface.

[0021] 4. When the door opens at an angle greater than a specific opening angle β, the limiting block will abut against the second limiting surface to prevent the limiting block from disengaging from the guide hole. This ensures that the door remains stably connected to the machine body even when it is open, reducing the possibility of the door disengaging from the machine body at will, and making the connection between the door and the machine body more stable and reliable.

[0022] 5. The transition zone is located at the connection between the second limiting plate and the main body, which makes the transition zone stronger. Setting the second limiting surface in the transition zone can reduce the possibility of deformation of the second limiting surface, thereby providing stable and reliable support for the limiting block, ensuring that the limiting block can keep in close contact with the second limiting surface, reducing the possibility of door shaking, and making the connection between the door and the machine body tighter.

[0023] 6. The second limiting surface is formed by partial punching of the second guide wall to make the second limiting surface have higher processing accuracy, so that the second limiting surface and the limiting block have higher matching accuracy, reduce the gap between the second limiting surface and the limiting block, so that the contact between the limiting block and the second limiting surface is tighter, which helps to reduce the possibility of the door shaking.

[0024] 7. The distance between the two straight surfaces is less than or equal to the distance between the first guide wall and the second guide wall. This reduces the possibility of the limiting block colliding with the guide hole during the installation of the door, and thus reduces the possibility of deformation of the guide hole and the limiting block due to impact. This provides a certain degree of protection for the guide hole and the limiting block, while also reducing the difficulty of door installation and improving the efficiency of door installation. In addition, the diameter of the circle shared by the two opposing arc surfaces is greater than the distance between the first guide wall and the second guide wall, ensuring that the limiting block can contact the first guide wall after rotating relative to the guide hole. This allows the limiting block to abut against the first limiting surface, which helps reduce the possibility of door shaking and makes the connection between the door and the machine body tighter.

[0025] 8. The angle between the first center line and the vertical plane is β, and the two straight planes are parallel to the first center line. Therefore, when the door opens at an angle of β, the first guide wall and the second guide wall of the guide hole can remain parallel to the two straight planes. At this time, the limiting block will not interfere with the first guide wall and the second guide wall, so that the limiting block can slide relative to the guide hole, thereby realizing the installation and disassembly of the door and the machine body.

[0026] 9. The distance between the end of the first guide wall away from the mounting hole and the end of the second guide wall away from the mounting hole gradually increases in the direction away from the mounting hole, that is, a flared mouth is formed at the opening of the guide hole, which can guide the limiting block into the guide hole, which helps to reduce the installation difficulty of the door body and thus improve the installation efficiency of the door body. At the same time, it can also reduce the possibility of the end of the first guide wall and the end of the second guide wall colliding with the limiting block, and reduce the possibility of damage to the first guide wall, the second guide wall and the limiting block.

[0027] 10. The door hinges are made of one-piece stamped metal parts, which makes the door hinges more complete, improves the overall strength of the door hinges, and reduces the possibility of door hinge deformation; in addition, the overall structure of the door hinges is simpler, which makes it easier to process and form with molds, and can improve the manufacturing efficiency of door hinges.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the body and the door in Embodiment 1 of this utility model;

[0031] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0032] Figure 3 This is a schematic diagram of the door hinge structure in Embodiment 1 of this utility model;

[0033] Figure 4 This is a partial side view of the door hinge opening angle β in Embodiment 1 of this utility model;

[0034] Figure 5 This is a partial side view of the door hinge opening angle when it is greater than β in Embodiment 1 of this utility model;

[0035] Figure 6 This is a partial side view of the door when it is closed in Embodiment 1 of this utility model;

[0036] Figure 7This is a schematic diagram of the structure of the body and the door in Embodiment 2 of this utility model;

[0037] Figure 8 for Figure 7 A magnified view of part B in the middle section;

[0038] Figure 9 This is a schematic diagram of the door hinge structure in Embodiment 2 of this utility model;

[0039] Figure 10 This is a partial side view of the door hinge opening angle β in Embodiment 2 of this utility model;

[0040] Figure 11 This is a partial side view of the door hinge opening angle when it is greater than β in Embodiment 2 of this utility model;

[0041] Figure 12 This is a partial side view of the door when it is closed in Embodiment 2 of this utility model.

[0042] Figure label:

[0043] 1. Body; 11. Hinge support; 2. Door body; 21. Door hinge; 211. Body; 212. First limiting plate; 2121. First limiting surface; 213. Second limiting plate; 2131. Second limiting surface; 214. Guide hole; 2141. First guide wall; 2142. Second guide wall; 215. Mounting hole; 3. Hinge shaft; 31. Limiting block; 311. Straight surface; 312. Arc surface; 3121. First arc surface; 32. First center line.

Detailed Implementation Methods

[0044] This utility model provides a household appliance, including a body, a door, a hinge support on the body, and a door hinge on the door. The hinge support has a hinge shaft, and the end face of the hinge shaft has a limiting block. The door hinge has a mounting hole that rotatably engages with the hinge shaft, and a first guide wall and a second guide wall arranged opposite to each other. A guide hole communicating with the mounting hole is formed between the first guide wall and the second guide wall. The limiting block enters and exits the guide hole when the door is at a specific opening angle β. A first limiting surface and a second limiting surface located on the same rotation plane as the limiting block are respectively provided on both sides of the guide hole. The first limiting surface is partially punched from the first guide wall. When the door is in the closed state, the limiting block abuts against the first limiting surface to prevent the door from moving upward relative to the body.

[0045] In this invention, the first limiting surface is partially punched from the first guide wall, which allows for higher machining precision and better matching accuracy between the first limiting surface and the limiting block. This significantly reduces the gap between the first limiting surface and the limiting block, thereby reducing the lifting height of the door when it closes. This ensures precise alignment between the door and the machine body, reducing the possibility of misalignment that could prevent the door from closing. Furthermore, the punched section of the first limiting surface not only provides higher machining precision but also reduces the machining difficulty. Secondly, only the door body... The limiting block can only enter and exit the guide hole when the door is at a specific opening angle β. Therefore, when the door is closed or the opening angle of the door is greater than or less than β, the limiting block will abut against the first limiting surface or the second limiting surface, thereby preventing the door from moving upward relative to the machine body. This achieves a stable connection between the door and the machine body, reduces the possibility of the door and the machine body separating, and makes the connection between the door and the machine body more stable and reliable. When it is necessary to disassemble the door, it is only necessary to open the door to the specific opening angle β, making the installation and disassembly of the door and the machine body simpler and more convenient, so as to facilitate the maintenance and cleaning of household appliances.

[0046] The technical solutions of the embodiments of this utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model. In addition, it should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., indicating orientation or positional relationship, are only based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device / component must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Example 1:

[0048] like Figures 1 to 6As shown in the figure, this embodiment illustrates a household appliance, including a hinged body 1 and a door 2. The hinge joint between the body 1 and the door 2 is located on the lower side of the body 1. The body 1 is provided with a hinge support 11, and the hinge support 11 is provided with a hinge shaft 3. The door 2 is provided with a door hinge 21. The door hinge 21 is provided with a mounting hole 215 that rotatably engages with the hinge shaft 3, and a first guide wall 2141 and a second guide wall 2142 arranged opposite to each other. A guide hole 214 communicating with the mounting hole 215 is formed between the first guide wall 2141 and the second guide wall 2142. The end of the guide hole 214 away from the mounting hole 215 passes through the door hinge 21, thus forming an opening at the bottom end of the door hinge 21 for the hinge shaft 3 to enter the guide hole 214. The outer end of the hinge shaft 3 away from the hinge support 11 is provided with a limiting block 31. The two sides of the guide hole 214 are respectively... A first limiting surface 2121 and a second limiting surface 2131 are provided on the same rotation plane as the limiting block 31. The first limiting surface 2121 is partially punched from the first guide wall 2141. After the hinge shaft 3 enters the mounting hole 215 through the guide hole 214, the hinge shaft 3 and the door hinge 21 are hinged together, so that the door body 2 can rotate around the hinge shaft 3 to realize the opening and closing of the door body 2. When the included angle between the door body 2 and the machine body 1 is at a specific opening angle β, the first limiting surface 2121 and the second limiting surface 2131 do not interfere with the limiting block 31, so that the limiting block 31 can enter and exit the guide hole 214 to realize the installation and disassembly of the door body 2 and the machine body 1. When the door body 2 is in the closed state, the limiting block 31 abuts against the first limiting surface 2121 to prevent the door body 2 from moving upward relative to the machine body 1, so as to limit the door body 2 from detaching from the machine body 1.

[0049] In this embodiment, the first limiting surface 2121 is partially punched from the first guide wall 2141, which allows the first limiting surface 2121 to have higher processing precision, resulting in higher matching precision between the first limiting surface 2121 and the limiting block 31. This significantly reduces the gap between the first limiting surface 2121 and the limiting block 31, thereby reducing the lifting height of the door 2 when it closes. This ensures that the door 2 can maintain precise fit with the machine body 1, reducing the possibility of the door 2 failing to close due to misalignment between the door 2 and the machine body 1. In addition, the first limiting surface 2121 is a punched section, which not only has higher processing precision but also reduces the processing difficulty of the first limiting surface 2121; secondly, only When the door 2 is at a specific opening angle β, the limiting block 31 can enter and exit the guide hole 214. Therefore, when the door 2 is closed or the opening angle of the door 2 is greater than or less than β, the limiting block 31 will abut against the first limiting surface 2121 or the second limiting surface 2131, thereby preventing the door 2 from moving upward relative to the body 1, so as to achieve a stable connection between the door 2 and the body 1, reduce the possibility of the door 2 and the body 1 separating, and make the connection between the door 2 and the body 1 more stable and reliable. When it is necessary to disassemble the door 2, it is only necessary to open the door 2 to the specific opening angle β, making the installation and disassembly of the door 2 and the body 1 simpler and more convenient, so as to facilitate the maintenance and cleaning of household appliances.

[0050] like Figure 3 As shown, in this embodiment, the door hinge 21 includes a body 211 and a first limiting plate 212 and a second limiting plate 213 protruding from the outer surface of the body 211. A mounting hole 215 is provided on the body 211, and a guide hole 214 is formed between the first limiting plate 212 and the second limiting plate 213. A first guide wall 2141 is formed on the side of the first limiting plate 212 facing the guide hole 214, while the side of the first limiting plate 212 away from the guide hole 214 is connected to the body 211. A second guide wall 2142 is formed on the side of the second limiting plate 213 facing the guide hole 214, and the second limiting plate 213 is fixedly connected to the body 211. The first limiting surface 2121 and the second limiting surface 2131 are respectively disposed on the first limiting plate 212 and the second limiting plate 213. When the hinge shaft 3 enters the mounting hole 215, the door hinge 21 can rotate relative to the hinge shaft 3 to realize the opening and closing of the door body 2. When the opening angle of the door body 2 is less than β, the first limiting surface 2121 rotates to the lower side of the limiting block 31 and abuts against the limiting block 31 to prevent the door body 2 from moving upward relative to the body 1. When the opening angle of the door body 2 is greater than β, the second limiting surface 2131 rotates to the lower side of the limiting block 31 and abuts against the limiting block 31 to prevent the door body 2 from moving upward relative to the body 1.

[0051] In this embodiment, the first limiting plate 212 and the second limiting plate 213 protrude outward from the outer surface of the body 211, so that both the first limiting plate 212 and the second limiting plate 213 can be on the same rotation plane as the limiting block 31. This ensures that after the limiting block 31 rotates relative to the door hinge 21, it can maintain contact with the first limiting plate 212 or the second limiting plate 213, thereby achieving the abutting engagement between the limiting block 31 and the first limiting surface 2121 or the second limiting surface 2131, preventing the door body 2 from moving upward relative to the body 1, and making the connection between the door body 2 and the body 1 more secure. Stable and reliable; in addition, the first guide wall 2141 is formed on the side of the first limiting plate 212 facing the guide hole 214, which can increase the contact area when the limiting block 31 abuts against the first limiting surface 2121, making the abutment and cooperation between the limiting block 31 and the first limiting surface 2121 more stable and reliable. At the same time, it can also disperse the force on the limiting block 31 and the first limiting surface 2121, reduce the possibility of the limiting block 31 and the first limiting surface 2121 being in local deformation or damage, and help extend the service life of the limiting block 31 and the first limiting surface 2121.

[0052] like Figure 2As shown, in this embodiment, the bottom of the limiting block 31 is provided with a first arc surface 3121, the first limiting surface 2121 is formed at the upper end of the first guide wall 2141, and the first limiting surface 2121 is a curved surface. The second limiting plate 213 has a transition area connected to the body 211, the outer surface of the transition area forms the second limiting surface 2131, and the end of the second limiting surface 2131 extends to the second guide wall 2142. The second limiting surface 2131 is also a curved surface. The limiting block 31, the first limiting surface 2121, and the second limiting surface 2142 are all curved surfaces. The curved surfaces 2131 ensure smoother contact and separation between the first curved surface 3121 and the first limiting surface 2121 or the second limiting surface 2131. This effectively prevents interference between the limiting block 31 and the first limiting surface 2121 or the second limiting surface 2131, which could lead to jamming or even complete blockage. This allows the limiting block 31, in conjunction with the first limiting surface 2121 and the second limiting surface 2131, to restrict the door 2 from detaching from the machine body 1, while ensuring that the door 2 can rotate smoothly relative to the machine body 1. It achieves a closed state and has a larger opening angle; furthermore, when the first arc surface 3121 abuts against the first limiting surface 2121 or the second limiting surface 2131, as the door body 2 continues to rotate, the contact area between the limiting block 31 and the first limiting surface 2121 or the second limiting surface 2131 gradually increases. The curved structure allows the contact force between the first arc surface 3121 and the first limiting surface 2121 or the second limiting surface 2131 to gradually increase, making the connection between the door body 2 and the body 1 more secure and reliable, effectively... The swaying amplitude of the door body 2 is reduced; secondly, the use of arc and curved surface structures makes the contact between the limiting block 31 and the first limiting surface 2121 and the second limiting surface 2131 smoother and more uniform, reducing the possibility of local wear on the limiting block 31, the first limiting surface 2121 and the second limiting surface 2131, which helps to improve the wear resistance of the limiting block 31, the first limiting surface 2121 and the second limiting surface 2131, and thus extend the service life of the limiting block 31, the first limiting surface 2121 and the second limiting surface 2131.

[0053] like Figure 2As shown, regarding the specific structure of the limiting block 31, in this embodiment, the limiting block 31 has a first center line 32, which is parallel to the surface of the limiting block 31 away from the hinge support axis. The outer periphery of the limiting block 31 includes two straight surfaces 311 symmetrically arranged about the first center line 32 and two arc surfaces 312 connected between the two ends of the two straight surfaces 311. The arc surface 312 located below the two straight surfaces 311 is the first arc surface 3121. The two opposing straight surfaces 311 are parallel to each other and the distance between them is less than or equal to the distance between the first guide wall 2141 and the second guide wall 2142. The diameter of the circle shared by the two opposing arc surfaces 312 is greater than the distance between the first guide wall 2141 and the second guide wall 2142. In this embodiment, the outer periphery of the limiting block 31 is provided with two straight surfaces 311 parallel to the first center line 32. When the first guide wall 2141 and the second guide wall 2142 are parallel to the two straight surfaces 311, the limiting block 31 can be positioned such that when ... When the two straight surfaces 311 are kept parallel, since the distance between the two straight surfaces 311 is less than or equal to the distance between the first guide wall 2141 and the second guide wall 2142, the first guide wall 2141 and the second guide wall 2142 will not interfere with the limit block 31 when the limit block 31 moves along the guide hole 214 in this state, so that the limit block 31 can smoothly enter and exit the guide hole 214, thereby realizing the quick installation and disassembly of the door body 2 and the machine body 1. In addition, the distance between the two straight surfaces 311 is less than or equal to the distance between the first guide wall 2141 and the second guide wall 2142, which can reduce the possibility of the limit block 31 colliding with the guide hole 214 during the installation of the door body 2, thereby reducing the possibility of the guide hole 214 and the limit block 31 being deformed due to the impact, which can play a certain protective role for the guide hole 214 and the limit block 31, and at the same time reduce the installation difficulty of the door body 2 and improve the installation efficiency of the door body 2.

[0054] In addition, in this embodiment, the diameter of the circle shared by the two opposing arc surfaces 312 is greater than the distance between the first guide wall 2141 and the second guide wall 2142. That is, the rotation path of the two arc surfaces 312 relative to the door hinge 21 will interfere with the first guide wall 2141 and the second guide wall 2142. This ensures that after the limiting block 31 rotates relative to the guide hole 214, it can contact the first guide wall 2141 or the second guide wall 2142, thereby making the limiting block 31 abut against the first limiting surface 2121 or the second limiting surface 2131. This helps to reduce the possibility of the door body 2 shaking and makes the connection between the door body 2 and the body 1 tighter. It should be noted that although the second limiting surface 2131 is set in the transition area of ​​the second connecting plate, one end of the second limiting surface 2131 extends to the second guide wall 2142 and connects with the second guide wall 2142. When the second connecting plate rotates to After the lower side of the limiting block 31, the first arc surface 3121 will pass over the second guide wall 2142 and abut against the second limiting surface 2131 to prevent the door body 2 from moving upward relative to the body 1. Secondly, the diameter of the circle shared by the two opposing arc surfaces 312 is greater than the distance between the first guide wall 2141 and the second guide wall 2142, that is, the maximum distance between the two arc surfaces 312 is greater than the width of the guide hole 214. Since the limiting block 31, the first guide wall 2141, and the second guide wall 2142 are all on the same rotation plane, when the first guide wall 2141 and the second guide wall 2142 intersect with the straight surface 311, the first guide wall 2141 and the second guide wall 2142 will interfere with the two arc surfaces 312, thereby restricting the limiting block 31 from leaving the guide hole 214, so that the hinge shaft 3 and the door hinge 21 are more stable and reliable, and the possibility of the door body 2 arbitrarily leaving the body 1 is reduced.

[0055] It should be noted that the hinge shaft 3 in this embodiment also includes a shaft body fixedly connected to the hinge support 11. One end of the shaft body is provided with a fixed end, and the other end is fixedly connected to the limiting block 31. The cross-section of the shaft body is circular, and the wall of the mounting hole 215 matches the outer periphery of the shaft body, that is, the cross-section of the mounting hole 215 is also circular. When the hinge shaft 3 enters the mounting hole 215, the shaft body contacts the wall of the mounting hole 215, thereby allowing the shaft body and the mounting hole 215 to rotate relative to each other, so that the opening and closing of the door 2 is smoother and less prone to jamming. In addition, the hinge support 11 can be provided with a socket for the fixed end to be inserted. The fixed end and the socket are anti-rotationally engaged, thereby preventing the hinge shaft 3 from rotating relative to the hinge support frame, ensuring that the door 2 can open and close normally. The shape of the fixed end can be rectangular or D-shaped, etc., which have an anti-rotation function. Of course, it can be understood that the shaft body can also be an integral structure with the hinge support 11.

[0056] like Figure 4As shown, in this embodiment, the angle between the first centerline 32 and the vertical plane is β. The vertical plane is the side of the opening of the body 1, that is, the angle between the first centerline 32 and the side of the body 1 is also β. In addition, the length of the door 2 is from the bottom to the top. The first guide wall 2141 and the second guide wall 2142 are in the same plane as the length of the door 2. When the door 2 is opened, the angle between the door 2 and the body 1 is the opening angle of the door 2. When the opening angle of the door 2 is β, the first guide wall 214... The angle between the first guide wall 2141 and the second guide wall 2142 and the body 1 is also β. At this time, the first guide wall 2141 and the second guide wall 2142 are parallel to the first center line 32. That is, the first guide wall 2141 and the second guide wall 2142 are also parallel to the two straight surfaces 311 of the limiting block 31. As a result, the first guide wall 2141 and the second guide wall 2142 will not interfere with the limiting block 31, so that the limiting block 31 can smoothly enter and exit the guide hole 214, so as to realize the quick installation and disassembly of the door body 2 and the body 1.

[0057] like Figure 5 As shown, when the opening angle of the door 2 is greater than β, the second limiting plate 213 will rotate to the lower side of the limiting block 31, and the first guide wall 2141 and the second guide wall 2142 will remain intersecting. At this time, the first guide wall 2141 and the second guide wall 2142 will interfere with the two arc surfaces 312 of the limiting block 31, thereby restricting the limiting block 31 from disengaging from the guide hole 214. In addition, the first arc surface 3121 at the bottom of the limiting block 31 will abut against the second limiting surface 2131. The limiting cooperation between the limiting surface and the second limiting surface 2131 restricts the limiting block 31 from disengaging from the guide hole 214, thereby restricting the door 2 from disengaging from the body 1, and realizing a stable connection between the door 2 and the body 1; Figure 6 As shown, when the opening angle of the door 2 is less than β, or when the door 2 is in the closed state, the first limiting plate 212 will rotate to the lower side of the limiting block 31. At this time, the first arc surface 3121 will abut against the first limiting surface 2121. The first limiting surface 2121 abuts against the lower side of the limiting block 31, which can prevent the door 2 from moving upward relative to the body 1, thereby reducing the lifting height of the door 2 when it is closed, ensuring that the door 2 can maintain precise cooperation with the body 1, and reducing the possibility that the door 2 cannot be closed due to misalignment between the door 2 and the body 1.

[0058] like Figure 3As shown, the door hinge 21 in this embodiment is a one-piece stamped metal part. The first connecting plate and the second connecting plate protrude outward from the body 211 by stamping. The metal part can make the door hinge 21 have higher strength, reduce the possibility of the door hinge 21 breaking, and help extend the service life of the door hinge 21. The one-piece stamping of the door hinge 21 can make the door hinge 21 have higher integrity, improve the overall strength of the door hinge 21, and reduce the possibility of the door hinge 21 deforming. In addition, the overall structure of the door hinge 21 is simpler, which makes it easier to process and form with molds, and can improve the manufacturing efficiency of the door hinge 21.

[0059] like Figure 3 As shown, in this embodiment, the distance between the end of the first guide wall 2141 away from the mounting hole 215 and the end of the second guide wall 2142 away from the mounting hole 215 gradually increases in the direction away from the mounting hole 215, that is, a flared mouth is formed at the opening of the guide hole 214, which can guide the limiting block 31 into the guide hole 214, which helps to reduce the installation difficulty of the door body 2, thereby improving the installation efficiency of the door body 2. At the same time, it can also reduce the possibility of collision between the end of the first guide wall 2141 and the end of the second guide wall 2142 and the limiting block 31, and reduce the possibility of damage to the first guide wall 2141, the second guide wall 2142 and the limiting block 31.

[0060] It should be noted that the household appliance described in this embodiment is a dishwasher. Of course, it is understood that in other embodiments, the household appliance may also be a disinfection cabinet, a freezer, etc.

[0061] Example 2:

[0062] like Figures 7 to 12 The main difference between this embodiment and embodiment one is that in this embodiment, the side of the second limiting plate 213 facing the guide hole 214 is the second guide wall 2142, and the side of the second limiting plate 213 away from the guide hole 214 is connected to the body 211. The second limiting surface 2131 is formed by partial punching of the second guide wall 2142. The second limiting surface 2131 is formed at the upper end of the second guide wall 2142. The second limiting surface 2131 is formed by partial punching of the second guide wall 2142 to make the second limiting surface 2131 have higher processing accuracy, so that the second limiting surface 2131 and the limiting block 31 have higher matching accuracy, reduce the gap between the second limiting surface 2131 and the limiting block 31, so that the contact between the limiting block 31 and the second limiting surface 2131 is tighter, which helps to reduce the possibility of the door 2 shaking.

[0063] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A household appliance, comprising a body, a door, a hinge support member disposed on the body, and a door hinge disposed on the door, wherein the hinge support member has a hinge shaft, the end face of the hinge shaft has a limiting block, the door hinge has a mounting hole for rotatably engaging with the hinge shaft, and a first guide wall and a second guide wall disposed opposite to each other, a guide hole communicating with the mounting hole is formed between the first guide wall and the second guide wall, the limiting block enters and exits the guide hole when the door is at a specific opening angle β, and a first limiting surface and a second limiting surface located on the same rotation plane as the limiting block are respectively provided on both sides of the guide hole, characterized in that, The first limiting surface is partially punched from the first guide wall. When the door is in the closed state, the limiting block abuts against the first limiting surface to prevent the door from moving upward relative to the machine body.

2. The household appliance as described in claim 1, characterized in that, The bottom of the limiting block is provided with a first arc surface. The first limiting surface or the second limiting surface cooperates with the first arc surface to prevent the limiting block from coming out of the guide hole. Both the first limiting surface and the second limiting surface are curved surfaces.

3. The household appliance as described in claim 1, characterized in that, The door hinge includes a body and a first limiting plate protruding from the outer surface of the body. The mounting hole is provided on the body. One side of the first limiting plate forms a first guide wall, and the side of the first limiting plate opposite to the guide hole is connected to the body.

4. The household appliance as described in claim 1, characterized in that, The door hinge includes a body and a second limiting plate protruding from the outer surface of the body. The mounting hole is provided on the body. The second limiting plate is connected to the body. A second guide wall is formed on one side of the second limiting plate. The second limiting surface is provided on the second limiting plate to prevent the limiting block from dislodging from the guide hole when the door opening angle is greater than a specific opening angle β.

5. The household appliance as described in claim 4, characterized in that, The second limiting plate has a transition area connected to the body, and the outer surface of the transition area is formed with the second limiting surface.

6. The household appliance as described in claim 4, characterized in that, The side of the second limiting plate opposite to the guide hole is connected to the body, and the side of the second limiting plate forming the second guide wall is partially punched to form the second limiting surface.

7. The household appliance as described in any one of claims 1 to 6, characterized in that, The outer periphery of the limiting block includes two straight surfaces symmetrically arranged about the first center line and two arc surfaces connected between the two ends of the two straight surfaces. The two opposite straight surfaces are parallel to each other and the distance between them is less than or equal to the distance between the first guide wall and the second guide wall. The diameter of the circle shared by the two opposite arc surfaces is greater than the distance between the first guide wall and the second guide wall.

8. The household appliance as described in claim 7, characterized in that, The angle between the first centerline and the vertical plane is β.

9. The household appliance as described in any one of claims 1 to 6, characterized in that, The distance between the end of the first guide wall away from the mounting hole and the end of the second guide wall away from the mounting hole gradually increases in the direction away from the mounting hole.

10. The household appliance as described in any one of claims 1 to 6, characterized in that, The door hinge is a one-piece stamped metal part.

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