Hinge and dish washing machine

Abstract

The utility model discloses a hinge and a dish-washing machine, and relates to the technical field of household appliances. The device specifically comprises a support, a hinge arm, a connecting rod piece, a springback assembly and an elastic retaining piece, the hinge arm comprises a second rotating part and a first rotating part, and the hinge arm is hinged to the support through the first rotating part; the connecting rod piece comprises a connecting rod body and a guide block, the connecting rod body is hinged to the hinge arm through a second rotating part, and the guide block is rotationally connected with the connecting rod body and slides along the inner wall of the support; the other end of the springback assembly is connected with the connecting rod main body; the elastic retaining piece is connected to the support and can abut against the connecting rod body so as to limit the connecting rod body to move relative to the support. The elastic retaining piece can abut against the connecting rod piece, it is ensured that the hinge arm and the support can be kept at a small angle, fatigue abrasion of the elastic retaining piece is made up through friction between the guide block and the support, it is ensured that stress is kept balanced when the hinge is opened and closed, and the hovering reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to a hinge and a dishwasher. Background Technology

[0002] Hinges are components that connect the doors and cabinets of household appliances. They enable the doors of appliances to open and close smoothly and ensure the airtightness of the interior space when the appliance is operating. Household appliances include dishwashers, ovens, microwave ovens, and steam ovens.

[0003] In the prior art, the hinge adopts a sliding hinge structure, which allows the door to slide along a certain track when it is opened. It includes a slide rail, a rotating part and an elastic element. However, after a period of use, the hovering function of the rotating part, the slide rail and the elastic element will deteriorate. For example, the friction will increase, resulting in a greater force to open and close the door. At the same time, the elastic element will experience fatigue wear, resulting in an imbalance of force when the hinge is opened and closed, which will affect the normal use of the door. Utility Model Content

[0004] The main purpose of this invention is to provide a hinge and a dishwasher, which aims to optimize the hinge structure and ensure that the force remains balanced when the hinge is opened and closed.

[0005] To achieve the above objectives, this utility model proposes a hinge, comprising:

[0006] support;

[0007] A hinged arm is hinged to the bracket;

[0008] A connecting rod includes a connecting rod body and a guide block. The connecting rod body is hinged to the hinge arm, and the guide block is rotatably connected to the connecting rod body and slidably disposed along the inner wall of the bracket.

[0009] The spring-loaded assembly has one end connected to the bracket and the other end connected to the connecting rod body;

[0010] An elastic retainer, connected to the bracket, is capable of abutting against the link body to restrict movement of the link body relative to the bracket.

[0011] Furthermore, the guide block has an oil reservoir for holding grease.

[0012] Furthermore, the rebound assembly includes an elastic element, a flexible element, and at least one guide element disposed on the bracket. One end of the elastic element is connected to the bracket, and the other end is wrapped around the at least one guide element and connected to the connecting rod body.

[0013] Furthermore, the rebound assembly includes two guide members spaced apart, and the other end of the flexible member is sequentially wound around the two guide members.

[0014] Furthermore, each of the guide elements includes:

[0015] The positioning shaft is connected to the side wall of the bracket;

[0016] The guide wheel is rotatably connected to the positioning shaft, and its outer wall is wrapped around the flexible member.

[0017] Furthermore, the flexible element includes a rope, belt, or chain.

[0018] Furthermore, the side wall of the bracket has a protruding guide strip. When the hinge arm rotates relative to the bracket, the guide block slides relative to the guide strip, causing grease to flow out of the oil storage groove of the guide block.

[0019] Furthermore, the connecting rod body includes:

[0020] The mounting part is connected to one end of the flexible member;

[0021] Limiting part;

[0022] The side wall of the bracket is provided with a limit block. When the hinge arm and the bracket are opened to the maximum position, the limiting part abuts against the limit block.

[0023] Furthermore, the bracket has at least one hanging hole, and the elastic element is hooked into one of the hanging holes.

[0024] This application also discloses a dishwasher, which includes a dishwasher body, a door and the aforementioned hinge. The dishwasher body has a washing chamber. The dishwasher body is connected to the bracket of the hinge, and the door is connected to the hinge arm of the hinge.

[0025] The above technical solution has the following advantages:

[0026] This invention uses a spring-loaded component to pull the connecting rod, causing the connecting rod to drive the hinge arm and the bracket to gradually close. The elastic retainer can abut against the connecting rod, ensuring that the hinge arm and the bracket can be kept at a small angle. The friction between the guide block and the bracket compensates for the fatigue wear of the elastic retainer, ensuring that the force is balanced when the hinge is opened and closed, and improving the reliability of the hovering. Attached Figure Description

[0027] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0028] Figure 1 This is a three-dimensional structural diagram of the first state of this utility model;

[0029] Figure 2This is a schematic diagram of the forward structure of the first state of this utility model;

[0030] Figure 3 This is a three-dimensional structural diagram of the second state of this utility model;

[0031] Figure 4 This is a schematic diagram of the forward structure of the second state of this utility model;

[0032] Figure 5 This is a schematic diagram of the connecting rod of this utility model.

[0033] In the diagram: 1. Bracket; 11. Guide bar; 12. Limiting block; 13. Stop block; 14. Hanging hole; 2. Elastic element; 3. Flexible element; 4. Guide element; 41. Guide wheel; 42. Positioning shaft; 5. Elastic retaining element; 6. Linkage element; 61. Linkage body; 62. Mounting part; 63. Limiting part; 64. Connecting part; 65. Guide block; 7. Hinge arm; 71. First rotating part; 72. Second rotating part. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0035] like Figures 1 to 3 and Figure 5 As shown, a hinge includes a bracket 1, a hinge arm 7, a connecting rod 6, a spring-loaded assembly, and an elastic retainer 5. The hinge arm 7 includes a second rotating part 72 and a first rotating part 71, and the hinge arm 7 is hinged to the bracket 1 through the first rotating part 71. The connecting rod 6 includes a connecting rod body 61 and a guide block 65. The connecting rod body 61 is hinged to the hinge arm 7 through the second rotating part 72, and the guide block 65 is rotatably connected to the connecting rod body 61 and slidably disposed along the inner wall of the bracket 1. One end of the spring-loaded assembly is connected to the bracket 1, and the other end is connected to the connecting rod body 61. The elastic retainer 5 is connected to the bracket 1 and can abut against the connecting rod body 61 to restrict the movement of the connecting rod body 61 relative to the bracket 1.

[0036] The hinge arm 7 is rotatably connected to the bracket 1 via a first rotating part 71, and drives the connecting rod 6 to move synchronously via a second rotating part 72. The first rotating part 71 is located at the end of the hinge arm 7, and the second rotating part 72 is close to the first rotating part 71. The first rotating part 71 and the second rotating part 72 are mounting holes for the hinge arm 7. The first rotating part 71 and the second rotating part 72 can be rotatably connected to the bracket 1 and the connecting rod 6 respectively using pins. The connection structure between the hinge arm 7, the bracket 1, and the connecting rod 6 is a synchronous linkage mechanism. During the closing process of the hinge arm 7 and the bracket 1, it springs back... The component pulls the connecting rod 6 to provide the closing pull force for the hinge arm 7. The connecting rod 6 rotates synchronously with the second rotating part 72. The guide block 65 slides along the bracket 1, keeping the connecting rod 6 able to slide back and forth along a fixed trajectory. When the hinge arm 7 is in the closed area of ​​the bracket 1, the elastic retainer 5 abuts against the connecting rod 6 and prevents the hinge arm 7 from closing with the bracket 1, so that the hinge arm 7 and the bracket 1 maintain a small angle, ensuring that the hinge arm 7 and the bracket 1 remain balanced, and avoiding the reduction of the hovering function of the hinge arm 7 after long-term use, which would affect the normal use of the door.

[0037] Specifically, the guide block 65 has an oil reservoir for holding grease. When the hinge arm 7 is closed with the bracket 1, the connecting rod body 61 rotates relative to the guide block 65, and oil flows out of the oil reservoir of the guide block 65. The oil lubricates the guide block 65 and the bracket 1, preventing the friction between the guide block 65 and the bracket 1 from increasing over time, which would otherwise require more force to open and close the hinge arm 7. The guide block 65 can hold liquid lubricating oil, preferably solid grease, which can extend its service life. When the connecting rod 6 rotates, it squeezes the solid grease, causing the grease to coat the contact area between the guide block 65 and the bracket 1, reducing friction.

[0038] like Figure 1 and Figure 2As shown, the rebound assembly includes an elastic element 2, a flexible element 3, and at least one guide element 4 disposed on the support 1. One end of the elastic element 2 is connected to the support 1, and the other end is wrapped around at least one guide element 4 and connected to the connecting rod body 61. The flexible element 3 connects the elastic element 2 and the connecting rod 6. The flexible element 3 rests on at least one guide element 4. Preferably, one or two guide elements 4 are provided. The flexible element 3 is used to pull one end of the connecting rod 6. It can be fixed by riveting, clamping, or hanging. The elastic element 2 pulls one end of the connecting rod 6 through the flexible element 3 to pass through the connecting rod. When component 6 drives the hinge arm 7 to close with the bracket 1, the combined force of the elastic force of the elastic element 2, the frictional force of the guide block 65, and the gravity of the hinge arm 7 maintains static balance. After the hinge arm 7 opens and closes, the component of gravity of the hinge arm 7 and the frictional force between the guide block 65 and the bracket 1 are basically equal to the elastic force of the elastic element 2, that is, the above-mentioned static balance is maintained, thereby keeping the hinge arm 7 in a suspended state after opening and closing, which is convenient to use. Even if the elastic element 2 becomes fatigued, the friction between the guide block 65 and the bracket 1 can compensate for the fatigue wear of the elastic element 2, ensuring that the force remains balanced when the hinge is opened and closed.

[0039] Specifically, the rebound assembly includes two guide members 4 spaced apart, and the other end of the flexible member 3 is sequentially wound around the two guide members 4. In order to better cooperate with the flexible member 3, the two guide members 4 are preferably at the same height or approximately the same height, such as the height difference between the two guide members 4 is less than 1 cm.

[0040] The guide member 4 can be a rib set on the bracket 1, so that the flexible member 3 fits against the rib and plays a role in changing the direction of the flexible member 3. The surface of the rib needs to be smooth and chamfered to avoid the end of the rib from causing jamming of the flexible member 3. The shape of the rib can be selected according to the changing position of the flexible member 3.

[0041] Preferably, each guide member 4 includes a positioning shaft 42 and a guide wheel 41. The positioning shaft 42 is connected to the side wall of the bracket 1. The guide wheel 41 is rotatably connected to the positioning shaft 42, and its outer wall is wrapped with a flexible member 3. When the hinge arm 7 opens or closes, the flexible member 3 is acted upon by the guide wheel 41, which plays a reversing role on the flexible member 3 to improve the space utilization of the hinge. At the same time, when the guide wheel 41 rotates, there is friction between it and the positioning shaft 42, so that the guide wheel 41 and the positioning shaft 42 can also participate in the above-mentioned static balance, further compensating for the fatigue wear of the elastic element 2. Lubricating oil is applied between the guide wheel 41 and the positioning shaft 42 to further improve the service life.

[0042] In one embodiment of this application, the flexible member 3 is a rope, belt, or chain. When the flexible member 3 is a rope, the guide wheel 41 can be a pulley, so that the pulley and the rope cooperate, and the two ends of the rope are respectively sleeved and fixed to the connecting rod 6 and the elastic element 2. The middle part of the rope is sleeved and contacts the groove on the outer wall of the pulley, so as to realize the pulling of the connecting rod 6 by the elastic element 2. When the flexible member 3 is a belt, only the guide wheel 41 needs to be replaced with a pulley. If the flexible member 3 is a chain, only the guide wheel 41 needs to be replaced with a sprocket.

[0043] like Figure 1 , Figure 3 and Figure 5 As shown, the side wall of the bracket 1 has a protruding guide strip 11. When the hinge arm 7 rotates around the first rotating part 71, the guide block 65 slides relative to the guide strip 11, causing grease to flow out of the oil reservoir of the guide block 65. The guide strip 11 is integrally formed with the bracket 1. The cross-section of the guide strip 11 is L-shaped, so that the guide block 65 slides along the trajectory of the guide strip 11. When the guide block 65 slides along the guide strip 11, the solid grease is squeezed, so that the grease is coated on the inner wall of the guide strip 11, reducing the friction between the guide block 65 and the guide strip 11.

[0044] like Figure 4 and Figure 5 As shown, the connecting rod body 61 includes a mounting part 62 and a limiting part 63. The mounting part 62 is connected to one end of the flexible member 3. A connecting part 64 is provided on the edge of the connecting rod body 61. The connecting part 64 is rotatably connected to the first rotating part 71. The mounting part 62 is rotatably connected to one end of the flexible member 3. A limiting block 12 is provided on the side wall of the bracket 1. When the hinge arm 7 opens and closes with the bracket 1, the limiting part 63 abuts against the limiting block 12. Preferably, the mounting part 62 is suspended and fixed to the flexible member 3, that is, one end of the flexible member 3 is sleeved on the mounting part 62, and the mounting part 62 is hook-shaped to hook the end of the flexible member 3 for easy replacement; the end of the connecting part 64 is connected to the first rotating part 71 by a bearing to reduce the friction of rotation; the limiting part 63 is also hook-shaped, and when the hinge arm 7 opens and closes, the limiting part 63 directly abuts against the outer wall of the limiting block 12 to limit the hinge arm 7 from continuing to open and close, and to avoid excessive opening and closing of the hinge. The shape of the limiting block 12 can be designed by itself, such as by making a contour design with the limiting part 63.

[0045] like Figures 1 to 4 As shown, the bracket 1 has one or more hanging holes 14 at the elastic element 2. When multiple hanging holes 14 are provided on the bracket 1, the multiple hanging holes 14 are spaced apart in the vertical direction. The end of the elastic element 2 can be selectively hooked to one of the hanging holes 14. The elastic force of the elastic element 2 is different. Multiple hanging holes 14 can be selected according to the elastic force of the elastic element 2 to ensure that the gravity component of the hinge arm 7 and the friction between the guide block 65 and the bracket 1 are basically equal to the elastic force of the elastic element 2, so as to facilitate the selection of different hanging hole 14 positions as needed.

[0046] As one embodiment of this application, the elastic element 2 is made of spring, elastic rubber product, elastic fabric, etc., preferably spring, so that the two ends of the spring can be fixed to the hanging hole 14 and the end of the flexible element 3, thereby improving the service life.

[0047] like Figures 1 to 4 As shown, the inner wall of the bracket 1 is connected to an elastic retainer 5. When the hinge arm 7 is closed with the bracket 1, the elastic retainer 5 overcomes the elastic force of the elastic element 2. The elastic retainer 5 acts on the connecting rod 6. When the hinge needs to maintain a small opening angle, such as the range of 0° to 10°, the elastic retainer 5 applies a force to the connecting rod 6 and deforms, causing the hinge arm 7 to be unable to close completely. The elastic retainer 5 overcomes the elastic force of the elastic element 2, thereby achieving the function of maintaining a small angle. When the elastic retainer 5 is not in contact with the connecting rod 6, the elastic retainer 5 maintains its original state, that is, no deformation occurs.

[0048] In this application, the elastic retainer 5 is a torsion spring, which has a fixed end and a rotating arm. The fixed end of the torsion spring is connected to the bracket 1. The inner wall of the bracket 1 has a stop 13 that restricts the rotation arm of the torsion spring. Specifically, the fixed end of the torsion spring is fixed to the inner wall of the bracket 1 by rivets or screws, and the rotating arm of the torsion spring is close to the stop 13. When the connecting rod 6 is not in contact with the torsion spring, the rotating arm of the torsion spring is always against the stop 13. When the connecting rod 6 is in contact with the rotating arm of the torsion spring, the torsion spring applies a force to the connecting rod 6 to resist the moving of the connecting rod 6 toward the hinge closing direction, and maintain the hinge opening at a small range of angles.

[0049] In addition to the methods described above, the torsion spring can be replaced with an elastic sheet, and its specific usage is similar to that of a torsion spring; alternatively, a spring and slider can be used, such as one end of the slider abutting against the stop 13, while the other end is suspended, so that the connecting rod 6 abuts against the slider. In the above solutions, the stop 13 is preferably integrally formed on the bracket 1.

[0050] A dishwasher includes a dishwasher body, a door, and the aforementioned hinges. The dishwasher body has a washing chamber. The dishwasher body is connected to the hinge bracket 1, and the door is connected to the hinge arm 7, so that the hinges on both sides of the dishwasher participate in the opening and closing of the door. When the hinge arm 7 is open or closed, the elastic force of the elastic element 2, the frictional force of the guide block 65, the weight of the hinge arm 7, and the weight of the door maintain a static balance to achieve the effect of door suspension when open.

[0051] When the dishwasher finishes its cycle and the automatic door-opening drying function is activated, the door is opened to a fixed angle. At this time, one end of the torsion spring presses against the connecting rod 6. When the door has a tendency to spring back, the spring force of the torsion spring will prevent the connecting rod 6 from rising, thereby preventing the door from springing back and closing, thus avoiding affecting the drying function.

[0052] Besides dishwashers, the hinges mentioned above can also be used in various household appliances, such as ovens, microwave ovens, and steam ovens.

[0053] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hinge, characterized in that, include: Frame (1); The hinge arm (7) is hinged to the bracket (1); The connecting rod (6) includes a connecting rod body (61) and a guide block (65). The connecting rod body (61) is hinged to the hinge arm (7), and the guide block (65) is rotatably connected to the connecting rod body (61) and slidably disposed along the inner wall of the bracket (1). The spring-loaded assembly has one end connected to the bracket (1) and the other end connected to the connecting rod body (61); An elastic retainer (5) is connected to the bracket (1) and is able to abut against the link body (61) to restrict the movement of the link body (61) relative to the bracket (1).

2. The hinge as described in claim 1, characterized in that, The guide block (65) has an oil storage tank for holding grease.

3. The hinge as described in claim 1, characterized in that, The rebound assembly includes an elastic element (2), a flexible element (3), and at least one guide element (4) disposed on the bracket (1). One end of the elastic element (2) is connected to the bracket (1), and the other end is wrapped around the at least one guide element (4) and connected to the connecting rod body (61).

4. The hinge as described in claim 3, characterized in that, The rebound assembly includes two guide members (4) spaced apart, and the other end of the flexible member (3) is sequentially wound around the two guide members (4).

5. The hinge as described in claim 3, characterized in that, Each of the guide elements (4) includes: The positioning shaft (42) is connected to the side wall of the bracket (1); The guide wheel (41) is rotatably connected to the positioning shaft (42), and its outer wall is wrapped around the flexible member (3).

6. The hinge as described in claim 3, 4, or 5, characterized in that, The flexible element (3) includes a rope, belt or chain.

7. The hinge as described in claim 2, characterized in that, The side wall of the bracket (1) has a protruding guide strip (11). When the hinge arm (7) rotates relative to the bracket (1), the guide block (65) slides relative to the guide strip (11), causing grease to flow out of the oil storage tank of the guide block (65).

8. The hinge as described in claim 3, 4, or 5, characterized in that, The connecting rod body (61) includes: The mounting part (62) is connected to one end of the flexible member (3); Limiting part (63); The side wall of the bracket (1) is provided with a limiting block (12). When the hinge arm (7) and the bracket (1) are opened to the maximum position, the limiting part (63) abuts against the limiting block (12).

9. The hinge as described in claim 3, characterized in that, The bracket (1) has at least one hanging hole (14), and the elastic element (2) is hooked to one of the hanging holes (14).

10. A dishwasher, characterized in that, The dishwasher includes a dishwasher body, a door and a hinge as described in any one of claims 1-9. The dishwasher body has a washing chamber. The dishwasher body is connected to the bracket (1) of the hinge and the door is connected to the hinge arm (7) of the hinge.

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