Hinge assembly for household appliance and household appliance

Abstract

The hinge assembly comprises a support used for being installed on a box body with an opening in the front side of the household appliance, the support is provided with a through hole, and the through hole is used for allowing a first connecting piece connecting the support with the box body to penetrate through; the hinge comprises a first rod body and a second rod body which are perpendicular to each other, the joint of the first rod body and the second rod body is rotationally connected with the support through a pin shaft, and the first rod body is used for being installed on a door body at the opening of the box body; the rotation track of the second rod body of the hinge on the support is a fan-shaped area with the pin shaft as the center, and the penetrating hole is located in the outer side of the fan-shaped area and avoids the movement range of the first connecting piece, so that the first connecting piece does not interfere with rotation of the hinge, the first connecting piece of a specific structure does not need to be arranged, and the cost is reduced. The first connecting piece can adopt a first screw and the like which are low in cost and easy to obtain.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to a hinge assembly for household appliances and the household appliances. Background Art

[0002] As a household appliance that is popular among everyone, dishwashers can free our hands while ensuring the cleanliness of dishes. The hinge structure of the dishwasher's door is an important part of the dishwasher, which determines whether the dishwasher can open and close the door normally, the door is sealed, and the door hovers.

[0003] For example, the Chinese utility model patent No. ZL202320367486.7 (Announcement No. CN219471851U) discloses a "dishwasher and its door hinge assembly", which includes a hinge support, a hinge pin, a hinge, and a sheath assembly made of self-lubricating material, wherein the sheath assembly includes a first body and a second body, the first body is provided with a first recess, the second body is provided with a second recess, and the first recess and the second recess are combined to form an axial hole for passing the hinge pin. Since the sheath assembly is added between the hinge pin and the hinge, the wear of the hinge and / or hinge pin caused by dry grinding is reduced.

[0004] This patent only provides a sleeve assembly at the hinge pin to reduce the deviation or wear of the hinge, but it is not enough to limit only this part by the sleeve assembly. The part of the hinge away from the hinge pin may still deviate toward the part where the hinge support is located.

[0005] In response to the above problems, the Chinese utility model patent with patent number ZL202322307324.7 (publication number CN220344365U) discloses "A Household Appliance", in which a door hinge assembly is used to realize the rotational connection between a door body and a box body, and includes a door hinge arranged at a lower position on one of the left and right sides of the door body and a connecting assembly connecting the door hinge and the box body, the door hinge includes a first connecting rod arranged in sequence from front to back along the same side wall of the box body and a second connecting rod connecting the first connecting rod and the connecting assembly, the first connecting rod is arranged along the front and rear directions, and the first connecting rod is rotatably arranged on the box body, and the rotationally connected part is the rotation point, and the front area of ​​the first connecting rod before the rotation point is connected to the side edge of the corresponding side of the door body; in order to reduce the friction between the first connecting rod and the hinge seat, a first gasket is arranged between the first end of the first connecting rod and the hinge seat, and the first gasket is provided with an axial hole for the connecting shaft to pass through. In order to avoid a situation where the gap between the door hinge and the hinge seat is too small, a second gasket fixed relatively to the second connecting rod is provided on the side of the second connecting rod facing the hinge seat. The presence of the second gasket ensures that the door body is smoother during the process of opening and closing the door.

[0006] Although the patent is provided with two gaskets, which solves the problem of hinge offset to a certain extent, in the above two patents, from the drawings, the screws connecting the hinge support and the dishwasher body are all located on the rotation path of the hinge, so special screws need to be used, otherwise the screws will interfere with the rotation of the hinge. Utility Model Content

[0007] The first technical problem to be solved by the utility model is to provide a hinge assembly for household appliances in which a first connecting member connecting a support and a box body does not affect the rotation of the hinge in view of the current status of the prior art.

[0008] The second technical problem to be solved by the present invention is to provide a household appliance using the above hinge assembly in view of the current status of the prior art.

[0009] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a hinge assembly for household appliances, comprising:

[0010] A support, used for being mounted on a box body of a household appliance with an open front side, wherein the support is provided with a through hole for a first connecting member connecting the support and the box body to pass through;

[0011] The hinge comprises a first rod body and a second rod body which are perpendicular to each other, wherein the connection between the first rod body and the second rod body is rotatably connected to the support through a pin shaft, and the first rod body is used to be installed on the door body at the opening of the box body;

[0012] It is characterized in that the rotation trajectory of the second rod body of the hinge on the support is a fan-shaped area centered on the pin shaft, and the through hole is located outside the fan-shaped area.

[0013] Preferably, a positioning portion for positioning a pull rope is provided at the end of the second rod. The pull rope serves to tighten the door body to balance the weight of the door body, so that the door can be opened and closed without overcoming the deadweight of the door body, and can be operated with very little force, so that fingers of people will not be accidentally pinched, thereby ensuring the safety of opening and closing the door.

[0014] The positioning portion can have various structural forms, such as a hook, or the wall surface of the second rod body close to the first rod body is called the front wall surface, and the wall surface of the second rod body facing away from the first rod body is called the rear wall surface. The positioning portion is a groove that passes through the front wall surface of the second rod body. The structure is simple, and the groove is used for the annular body formed at the end of the pull rope to be hooked therein.

[0015] In order to prevent the rear wall of the second rod from contacting the annular body and cutting the annular body during the rotation of the hinge, a notch is provided on the rear wall of the second rod to avoid the annular body of the pull rope end to avoid contact between the rear wall of the second rod and the annular body.

[0016] In order to further prevent the rear wall of the second rod from contacting the annular body during the hinge rotation process, the annular body is cut off, the contour of the groove is arc-shaped, with the center of the groove as the center point, and the part of the rear wall of the second rod corresponding to the groove is also an arc-shaped structure, the arc structure is located above the notch and the two are connected, and the angle between the center point and the connecting line of the two ends of the arc structure is between 3 degrees and 123 degrees. This is more in line with the motion state of the annular body, reduces the friction between the second rod and the annular body, and prolongs the life of the pull rope.

[0017] In order to prevent the annular body from escaping from the groove, a limiting portion which can be pressed to at least partially close the groove is provided at the notch of the groove. After the annular body is hooked in the groove, the limiting portion is pressed.

[0018] In order to prevent the hinge from deviating in the direction of the support, a first gasket and a second gasket are sandwiched between the second rod and the support, the first gasket is sleeved on the pin, and the first gasket is connected to the support through a second connecting piece, the second gasket is arranged adjacent to the groove, and the second gasket is connected to the support through a third connecting piece. This two-point positioning prevents the hinge from deviating in the left and right directions relative to the box body when rotating, causing the door body to shake left and right during movement.

[0019] In order to reduce the wear between the drawstring and the groove, a sheath is provided on the circumference of the groove, the sheath plays a role in protecting the drawstring, and the sheath is integrally formed with the second gasket to achieve positioning of the sheath.

[0020] In order to limit the moving stroke of the second rod body, the wall surface of the second rod body close to the first rod body is called the front wall surface, and the wall surface of the second rod body facing away from the first rod body is called the rear wall surface. The support is provided with a limiting plate that can abut against the front wall surface of the second rod body. In this state, the second rod body extends vertically and the first rod body extends horizontally.

[0021] Preferably, the wall surface of the second rod body close to the first rod body is called the front wall surface, and the wall surface of the second rod body facing away from the first rod body is called the rear wall surface. An arc plate is also provided between the front wall surface of the first rod body and the second rod body. The arc plate is arched away from the connection between the first rod body and the second rod body, so that the hinge assembly can withstand a larger door body weight.

[0022] The first technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a household appliance, characterized in that: it includes a box body, a door body and the above-mentioned hinge assembly, the front side of the box body is open, the door body is arranged at the opening of the box body, the door body can deflect forward and backward relative to the box body, and the left side wall and / or right side wall of the box body are provided with supports, and correspondingly, the first rod body is installed on the side wall of the corresponding side of the door body.

[0023] The household appliance may be a steamer, an oven, etc. In the above solution, the household appliance is a dishwasher.

[0024] Compared with the prior art, the advantages of the utility model are as follows: a through hole is provided on the support of the utility model, and the through hole is used for the first connecting member connecting the support and the box body to pass through. The rotation trajectory of the hinge on the support is a fan-shaped area centered on the pin shaft. The through hole is located on the outside of the fan-shaped area, avoiding the movement range of the first connecting member, so that the first connecting member will not interfere with the rotation of the hinge, and there is no need to set a first connecting member with a specific structure. The first connecting member can adopt a low-cost and easily available first screw, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of a hinge assembly;

[0027] Figure 3 for Figure 2 Schematic diagram of the decomposition of

[0028] Figure 4 for Figure 2 Schematic diagram of the draw cord and groove hook arrangement. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Household appliances can be steamers, ovens, dishwashers, etc. Figures 1 to 4 As shown, the household appliance of this embodiment takes a dishwasher as an example.

[0031] The household appliance includes a box body 1, a door body 2 and a hinge assembly. The front side of the box body 1 is open, and the door body 2 is arranged at the opening of the box body 1. The door body 2 can deflect forward and backward relative to the box body 1. Hinge assemblies are provided on the left and right sides of the box body 1. Of course, the hinge assembly can also be provided on the left or right side of the box body 1, but if the hinge assembly is only provided on one side, the door body 2 is prone to uneven force during the opening and closing process. Therefore, it is preferred that hinge assemblies are provided on both sides of the box body 1. This is a prior art and will not be repeated here.

[0032] The hinge assembly of this embodiment has two groups with the same structure, and one group of hinge assemblies is described below.

[0033] The hinge assembly includes a support 3, a hinge 4, a pull rope 5 and the like.

[0034] The support 3 is arranged on the side wall of the box body 1 . A through hole 31 is arranged on the support 3 . The through hole 31 is used for a first connecting member connecting the support 3 and the box body 1 to pass through. The first connecting member may be a screw.

[0035] The hinge 4 includes a first rod 41 and a second rod 42 which are perpendicular to each other. The connection between the first rod 41 and the second rod 42 is rotatably connected to the support 3 through a pin 6. The first rod 41 is mounted on the door 2. The hinge 4 can rotate 90° to open or close the door 2.

[0036] The rotation trajectory of the second rod body 42 of the hinge 4 on the support 3 is a fan-shaped area centered on the pin shaft 6, and the through hole 31 is located outside the fan-shaped area, avoiding the movement range of the hinge 4, so that the first connecting member will not interfere with the rotation of the hinge 4. There is no need to set a first connecting member with a specific structure. The first connecting member can adopt a low-cost and easily available first screw, etc.

[0037] The end of the second rod 42 is provided with a positioning portion for positioning the pull rope 5. The wall surface of the second rod 42 close to the first rod 41 is called the front wall surface, and the wall surface of the second rod 42 facing away from the first rod 41 is called the rear wall surface. The positioning portion is a groove 43 that passes through the front wall surface of the second rod 42, and the groove 43 is used for the annular body 51 formed at the end of the pull rope 5 to be hooked therein. The pull rope 5 is generally connected to the tension spring 52, which plays the role of tightening the door body 2 to balance the weight of the door body 2, so that the door can be opened and closed without overcoming the deadweight of the door body 2, and can be operated with very little force, so that people's fingers will not be accidentally pinched, and the safety of opening and closing the door is guaranteed; the pull rope 5 and the tension spring 52 can adopt existing technologies, which will not be repeated here.

[0038] In order to prevent the annular body 51 from escaping from the groove 43, a limiting portion 44 which can be pressed to at least partially close the groove is provided at the notch of the groove 43. After the annular body 51 is hooked in the groove 43, the limiting portion 44 is pressed. The accompanying drawing shows the state before the limiting portion 44 is pressed.

[0039] In order to prevent the rear wall of the second rod body 42 from contacting the annular body 51 during the rotation of the hinge 4, the annular body 51 is cut off and a notch 45 is provided on the rear wall of the second rod body 42 for avoiding the annular body 51 at the end of the pull rope 5 to avoid contact between the rear wall of the second rod body 42 and the annular body 51.

[0040] In addition, the contour of the groove 43 is arc-shaped, with the center of the groove 43 as the center point, the rear wall of the second rod body 42 corresponding to the groove 43 is also arc-shaped, the arc structure is located above the notch 45 and the two are connected, and the angle α between the center point and the connecting line of the two ends of the arc structure is between 3 degrees and 123 degrees. This is more in line with the motion state of the annular body 51, reduces the friction between the second rod body 42 and the annular body 51, and prolongs the life of the pull rope 5.

[0041] A first gasket 61 and a second gasket 62 are sandwiched between the second rod 42 and the support 3. The first gasket 61 is sleeved on the pin 6 and connected to the support 3 via a second connecting member 611. The second gasket 62 is disposed adjacent to the groove 43 and connected to the support 3 via a third connecting member 621. The two-point positioning prevents the hinge 4 from deviating in the left and right directions relative to the box body 1 when rotating, causing the door body 2 to shake left and right during movement.

[0042] In order to reduce the wear between the pull rope 5 and the groove 43 , a sheath 63 is sleeved on the circumference of the groove 43 . The sheath 63 protects the pull rope 5 . The sheath 63 is integrally formed with the second gasket 62 to achieve positioning of the sheath 63 .

[0043] The first gasket 61 , the second gasket 62 and the sheath 63 can all be made of flexible materials, such as silicone, rubber, etc.; the first gasket 61 and the second gasket 62 can both be interference fit with the support 3 and the second rod body 42 .

[0044] A limit plate 46 is provided on the support 3 and can abut against the front wall of the second rod body 42 to limit the moving stroke of the second rod body 42. When the second rod body 42 abuts against the limit plate 46, the second rod body 42 extends vertically, the first rod body 41 extends horizontally, and the door body 2 is in an open state.

[0045] An arc plate 47 is further provided between the front wall of the first rod body 41 and the second rod body 42 . The arc plate 47 is arched away from the connection between the first rod body 41 and the second rod body 42 , so that the hinge 4 assembly can bear a greater weight of the door body 2 .

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A hinge assembly for a household appliance, comprising: A support (3) is used for being mounted on a box (1) of a household appliance with an open front side, wherein the support (3) is provided with a through hole (31), and the through hole (31) is used for allowing a first connecting member connecting the support (3) and the box (1) to pass through; The hinge (4) comprises a first rod (41) and a second rod (42) which are perpendicular to each other, wherein the connection between the first rod (41) and the second rod (42) is rotatably connected to the support (3) via a pin (6), and the first rod (41) is used to be mounted on the door (2) at the opening of the box (1); It is characterized in that The rotation track of the second rod body (42) of the hinge (4) on the support (3) is a fan-shaped area centered on the pin shaft (6), and the through hole (31) is located outside the fan-shaped area.

2. The hinge assembly according to claim 1, characterized in that: The end of the second rod body (42) is provided with a positioning portion for positioning the pull rope (5).

3. The hinge assembly according to claim 2, characterized in that: The wall surface of the second rod body (42) close to the first rod body (41) is called the front wall surface, and the wall surface of the second rod body (42) facing away from the first rod body (41) is called the rear wall surface. The positioning portion is a groove (43) that passes through the front wall surface of the second rod body (42), and the groove (43) is used for the annular body (51) formed at the end of the pull rope (5) to be hooked therein.

4. The hinge assembly according to claim 3, characterized in that: A notch (45) for accommodating the annular body (51) at the end of the pull rope (5) is provided on the rear wall surface of the second rod body (42).

5. The hinge assembly according to claim 4, characterized in that: The contour of the groove (43) is arc-shaped, with the center of the groove (43) as the center point, and the portion of the rear wall of the second rod body (42) corresponding to the groove (43) is also arc-shaped. The arc-shaped structure is located above the notch (45) and the two are connected, and the angle between the center point and the connecting line of the two ends of the arc-shaped structure is between 3 degrees and 123 degrees.

6. The hinge assembly according to claim 3, characterized in that: The notch of the groove (43) is also provided with a limiting portion (44) which can be pressed to at least partially close the notch.

7. The hinge assembly according to claim 3, characterized in that: A first gasket (61) and a second gasket (62) are clamped between the second rod body (42) and the hinge (4); the first gasket (61) is sleeved on the pin shaft (6), and the first gasket (61) is connected to the support (3) via a second connecting member; the second gasket (62) is arranged adjacent to the groove (43), and the second gasket (62) is connected to the support (3) via a third connecting member.

8. The hinge assembly according to claim 7, characterized in that: A protective sleeve (63) is sleeved on the circumference of the groove (43), and the protective sleeve (63) and the second gasket (62) are integrally formed.

9. The hinge assembly according to claim 1 or 2, characterized in that: The wall surface of the second rod body (42) close to the first rod body (41) is called the front wall surface, and the wall surface of the second rod body (42) facing away from the first rod body (41) is called the rear wall surface. The support (3) is provided with a limit plate (46) capable of abutting against the front wall surface of the second rod body (42). In this state, the second rod body (42) extends vertically and the first rod body (41) extends horizontally.

10. The hinge assembly according to claim 1 or 2, characterized in that: The wall surface of the second rod body (42) close to the first rod body (41) is called the front wall surface, and the wall surface of the second rod body (42) facing away from the first rod body (41) is called the rear wall surface. An arc plate (47) is also provided between the front wall surface of the first rod body (41) and the second rod body (42), and the arc plate (47) is arched away from the connection between the first rod body (41) and the second rod body (42).

11. A household appliance, characterized in that: It comprises a box body (1), a door body (2) and a hinge assembly as claimed in any one of claims 1 to 10, wherein the front side of the box body (1) is open, the door body (2) is arranged at the opening of the box body (1), the door body (2) can deflect forward and backward relative to the box body (1), and the left side wall and / or right side wall of the box body (1) are provided with a support (3), and correspondingly, the first rod body (41) is installed on the side wall of the corresponding side of the door body (2).

12. The household appliance according to claim 11, characterized in that: The household appliance is a dishwasher.

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