Bidirectional damping hinge, door body structure and household appliance

Abstract

The present application relates to a kind of two-way damping hinges, including base, swing arm rotatably mounted at one end of base, two-way damping component is installed on base, one end of the two-way damping component is slidably connected with swing arm by sliding shaft, the other end of two-way damping component is connected with base by elastic element;The two-way damping component has two limit positions, and has damping effect when approaching limit position, swing arm can be driven to move between two limit positions by rotating.The present application also relates to a door body mechanism with the above two-way damping hinge, and a household appliance with the above door body structure.The present application has damping effect during hinge opening or closing, and has good mute effect, which can effectively avoid collision of door body.

Description

TECHNICAL FIELD

[0001] The present application relates to a hinge mechanism, in particular to a bidirectional damping hinge, a door body structure and a household appliance. BACKGROUND

[0002] Hinges are generally used to connect doors or windows, and with the improvement of people's living quality, the functions of hinges are becoming more and more rich. Some existing hinges with self-closing function can automatically close the door or window after opening, but such hinges often produce a large noise when closing the door or window. In order to reduce the noise when closing the door, some high-grade hinges increase dampers so that the door or window can be slowly closed, but such high-grade hinges generally only have a unidirectional damping effect, and only have a damping effect when the door or window is close to completely closed, and do not have a damping effect during the opening process. Thus, when the opening force is large, the door is easy to collide and produce a large noise, and the hinge is easy to be damaged. In addition, the opening feeling is not good, especially for high-end household appliances, a good opening feeling is very important, and it is very important to change the opening feeling to remind the user before the door is opened to the maximum angle. However, the existing hinges cannot meet the use requirements.

[0003] In view of this, the present application is proposed. SUMMARY

[0004] The first object of the present application is to overcome the shortcomings of the prior art, and to provide a bidirectional damping hinge, which has a damping effect during the opening or closing process, has a good mute effect, and can effectively avoid the collision of the door.

[0005] The second object of the present application is to provide a door body structure with the bidirectional damping hinge.

[0006] The third object of the present application is to provide a household appliance provided with the door body structure.

[0007] In order to achieve the first object of the present application, the present application adopts the following technical solutions:

[0008] A bidirectional damping hinge, comprising a base, a swing arm rotatably mounted at one end of the base, and a bidirectional damping assembly mounted on the base, one end of the bidirectional damping assembly being slidably connected to the swing arm through a sliding shaft, and the other end of the bidirectional damping assembly being connected to the base through an elastic element; the bidirectional damping assembly has two limit positions and has a damping effect when approaching the limit positions, and the bidirectional damping assembly can be moved between the two limit positions by rotating the swing arm.

[0009] Further, the bidirectional damping assembly comprises a slider slidably arranged on the base, a connecting rod hingedly connected to one end of the slider, and a damper mounted on the base; the other end of the connecting rod is slidably connected to the swing arm through a sliding shaft, the other end of the slider is connected to the base through an elastic element, the elastic element is configured to pull the slider away from the swing arm, a limiting slot with a length greater than that of the damper is arranged on the slider, the limiting slot is sleeved on the damper, and when the swing arm rotates, the slider is driven to slide through the connecting rod, and when the slider slides to the limit position, the end of the limiting slot is in contact with the damper and compresses the damper.

[0010] Further, the movement range of the swing arm is divided into a first movement region, a second movement region and a third movement region, in the first movement region and the third movement region, the end of the limiting slot is in contact with the damper, and in the second movement region, the end of the limiting slot is separated from the damper.

[0011] Further, the included angle between the swing arm and the connecting rod is 85°-105° when the swing arm is in the first movement region, the included angle between the swing arm and the connecting rod is 105°-160° when the swing arm is in the second movement region, and the included angle between the swing arm and the connecting rod is 160°-177° when the swing arm is in the third movement region.

[0012] Further, a sliding groove is arranged on the swing arm, the sliding groove is eccentrically arranged on one side of the swing arm, the sliding shaft is mounted in the sliding groove and slides along the sliding groove when the swing arm rotates, and the length of the sliding groove limits the rotation range of the swing arm.

[0013] Further, the sliding groove is an arc-shaped groove, a limiting protrusion is arranged on the side of the sliding groove close to the bidirectional damping assembly, the limiting protrusion changes the curvature of the sliding groove, and when the sliding shaft passes through the limiting protrusion, the resistance received by the sliding shaft increases.

[0014] Further, the bidirectional damping assembly further comprises a clamping seat, the damper is mounted on the base through the clamping seat, clamping claws are arranged on both sides of the clamping seat and are clamped with the base, a return spring is sleeved on the damper, and a gap is left between the end of the damper and the clamping seat, so that the damper can relatively move in the clamping seat.

[0015] Further, the slider is a long strip-shaped metal plate, a groove is arranged on the clamping seat for the slider to pass through, the limiting slot is a square through hole arranged in the middle of the slider, the damper is located in the square through hole and is compressed when the slider slides to a certain position.

[0016] Further, a limit claw is further connected to the swing arm, the limit claw is rotationally connected to the swing arm through a hinge shaft, and rotation of the limit claw can enable the limit claw to be clamped on the connecting rod to limit the rotation angle of the swing arm.

[0017] To achieve the second object, the application adopts the following technical scheme.

[0018] A door body structure with the bidirectional damping hinge, the bidirectional damping hinge is installed on at least one side of the door body, and the swing arm rotates relative to the base when the door body is opened and closed.

[0019] To achieve the first object, the application adopts the following technical scheme.

[0020] A household appliance configured with the door body structure.

[0021] The technical scheme of the application brings the following beneficial effects.

[0022] The bidirectional damping hinge has damping effects during opening and closing, can effectively avoid large noise generated when the door is opened or closed, and when the door is opened to a large opening angle, the damping effect of the hinge can remind the user, avoid the impact on the door body and the hinge caused by the large opening angle, is beneficial to prolong the service life of the door body, improve the user's use experience, and achieve better use effect. The door body structure and the household appliance have better use experience, can better meet the use demand of the user. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structural diagram of the bidirectional damping hinge of the application;

[0024] Figure 2 The exploded view of the bidirectional damping hinge of the application;

[0025] Figure 3 The front view of the bidirectional damping hinge of the application;

[0026] Figure 4 The longitudinal sectional view of Figure 3 ;

[0027] Figure 5 The enlarged view of Figure 4 ;

[0028] Figure 6 The schematic view of the swing arm of the bidirectional damping hinge of the application in the first movement area;

[0029] Figure 7: The schematic diagram of the swing arm of the bidirectional damping hinge of the present application in the second movement area;

[0030] Figure 8 : The schematic diagram of the swing arm of the bidirectional damping hinge of the present application in the third movement area;

[0031] Figure 9 : The structure diagram of the damper and the clamping seat of the bidirectional damping hinge of the present application;

[0032] Figure 10 : The top view of the automatic door opening and closing mechanism of the present application;

[0033] Figure 11 : The front view of the automatic door opening and closing mechanism of the present application;

[0034] Figure 12 : The overall view of the automatic door opening and closing mechanism of the present application;

[0035] Figure 13 : The structure diagram of the household appliance of the present application;

[0036] Wherein: 1, fixed seat 2, rotating arm 3, first fixed shaft 4, transmission 5, elastic element 6, connecting piece 7, second fixed shaft 8, sliding shaft 9, limiting hole 10, third fixed shaft 11, sliding block 12, motor drive mechanism 13, gear box reduction structure 14, transmission drive structure;

[0037] 100, base 101, swing arm 102, elastic element 103, sliding shaft 104, limiting clamping jaw 105, sliding piece 106, connecting rod 107, damper 108, clamping seat 109, hinge shaft 101a, sliding groove 101b, limiting protrusion 105a, limiting groove 107a, reset spring 108a, clamping jaw. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0039] As Figure 1 and Figure 2As shown in the figure, a bidirectional damping hinge includes a base 100, a swing arm 101, a bidirectional damping assembly, an elastic element 102, a sliding shaft 103 and a limiting claw 104. The base 100 is a long slot-shaped metal plate, and the swing arm 101 is rotatably installed at one end of the base 100, specifically, the swing arm 101 is connected with the base 100 through a hinge shaft 109. The bidirectional damping assembly is installed on the base 100, one end of the bidirectional damping assembly is slidably connected with the swing arm 101 through the sliding shaft 103, and the other end of the bidirectional damping assembly is connected with the base 100 through the elastic element 102; the bidirectional damping assembly has two limit positions and has a damping effect when approaching the limit positions, and the swing arm 101 can drive the bidirectional damping assembly to move between the two limit positions by rotating.

[0040] In combination Figure 3 and Figure 4 As shown in the figure, specifically, the bidirectional damping assembly includes a sliding piece 105, a connecting rod 106, a damper 107 and a clamping seat 108. The sliding piece 105 is slidably arranged on the base 100, one end of the sliding piece 105 is hingedly connected with the connecting rod 106, and the other end of the sliding piece 105 is connected with the base 100 through the elastic element 102; the other end of the connecting rod 106 is slidably connected with the swing arm 101 through the sliding shaft 103. The damper 107 is installed on the base 100 through the clamping seat 108. The elastic element 102 is configured to pull the sliding piece 105 away from the swing arm 101, and the elastic element 102 is used for resetting the swing arm 101. A limiting slot 105a with a length greater than that of the damper 107 is arranged on the sliding piece 105, the limiting slot 105a is sleeved on the damper 107, when the swing arm 101 rotates, the connecting rod 106 drives the sliding piece 105 to slide, and when the sliding piece 105 slides to approach the limit position, the end of the limiting slot 105a contacts the damper 107, and the damper 107 is compressed, thereby generating a damping effect to reduce the rotation speed of the swing arm 101.

[0041] Preferably, the elastic element 102 is a tension spring, one end of which is hooked on the sliding piece 105, and the other end of which is hooked on the base 100. The swing arm 101 needs to overcome the action force of the tension spring to rotate.

[0042] In combination Figure 9The center axis of the damper 107 is parallel to the sliding direction of the sliding member 105. The holder 108 is a plastic member and has a mounting groove in which the damper 107 is placed. The width of the mounting groove is the same as the outer diameter of the damper 107. The holder 108 is provided with clamping claws 108a on both sides and is clamped to the base 100. The position of the holder 108 is fixed relative to the base 100. A gap is left between the end of the damper 107 and the holder 108, so that the damper 107 can move slightly in the holder 108. A return spring 107a is sleeved on the damper 107, so that the damper 107 can be automatically returned and generate a certain damping effect when the damper 107 is compressed.

[0043] In combination Figure 6 , Figure 7 , Figure 8 The movement range of the swing arm 101 is divided into a first movement region, a second movement region and a third movement region. In the first movement region and the third movement region, the end of the limiting groove 105a is in contact with the damper 107 and generates a pressing effect. In the second movement region, the end of the limiting groove 105a is separated from the damper 107, and the damper 107 is in a fully stretched state. When the swing arm 101 rotates in the second movement region, it does not have a damping effect.

[0044] Preferably, when the swing arm 101 is in the first movement region, the included angle between the swing arm 101 and the connecting rod 106 is 85°-105°. When the swing arm 101 is in the second movement region, the included angle between the swing arm 101 and the connecting rod 106 is 105°-160°. When the swing arm 101 is in the third movement region, the included angle between the swing arm 101 and the connecting rod 106 is 160°-177°.

[0045] The ranges of the above-mentioned first movement region, second movement region and third movement region can also be adjusted as needed.

[0046] In combination Figure 5 To avoid that the swing arm 101 rotates and causes the connecting rod 106 to tilt greatly, the swing arm 101 is provided with a sliding groove 101a which is eccentrically arranged on one side of the swing arm 101. The sliding shaft 103 is installed in the sliding groove 101a. When the swing arm 101 rotates, the sliding shaft 103 slides along the sliding groove 101a. The length of the sliding groove 101a limits the rotation range of the swing arm 101.

[0047] Preferably, the chute 101a is an arc-shaped slot, and a limiting protrusion 101b is arranged on one side of the chute 101a close to the connecting rod 106, the limiting protrusion 101b changes the curvature of the chute 101a, and one side of the limiting protrusion 101b forms a concave slot for accommodating the sliding shaft 103, so that the sliding shaft 103 is not easy to be separated from the concave slot, and the limiting protrusion 101b plays a positioning role. When the sliding shaft 103 passes through the limiting protrusion 101b, the resistance received by the sliding shaft 103 suddenly increases, so that a greater force needs to be applied to the swing arm 101 to make the sliding shaft 103 pass through the limiting protrusion 101b, and the limiting protrusion 101b makes the hinge receive a greater resistance when it is just opened, so that a better closing effect can be maintained.

[0048] Preferably, the sliding piece 105 is a long strip-shaped metal plate, the clamping seat 108 is provided with a groove for the sliding piece 105 to pass through, the limiting slot 105a is a square through hole arranged in the middle of the sliding piece 105, and the damper 107 is located in the square through hole. When the sliding piece 105 slides to a certain position, the end of the damper 107 is in contact with the square through hole, and an acting force is generated, so that the damper 107 is compressed.

[0049] Combining Figure 6 and Figure 7 As shown in the figure, the limiting clamping jaw 104 is rotationally connected with the swing arm 101 through a hinge shaft, and rotating the limiting clamping jaw 104 can make one end of the limiting clamping jaw 104 be clamped between the swing arm 101 and the connecting rod 106, so that the included angle between the swing arm 101 and the connecting rod 106 cannot be further reduced, thereby limiting the rotation angle of the swing arm 101, and making the swing arm 101 stop at a certain fixed position.

[0050] The application also relates to a door body structure with the bidirectional damping hinge, the bidirectional damping hinge is arranged on at least one side of the door body, and when the door body is opened and closed, the swing arm 101 rotates relative to the base 100, the damper 107 plays a damping role when the door body is opened and rotated to be close to the maximum opening angle, and the damper 107 also plays a damping effect when the door body is close to the closed position, so that the closing speed of the door body is reduced, and the noise when the door body is closed is reduced.

[0051] In one of the embodiments, the bidirectional damping hinge is arranged on one side of the door body, and an automatic opening and closing door mechanism is arranged on the other side of the door body.

[0052] As Figure 10 to Figure 12 shown in the figure, specifically, the automatic opening door mechanism comprises a fixed seat 1 and a rotating arm 2, the rotating arm 2 is hingedly connected to the fixed seat 1 through a first fixed shaft 3, and the fixed seat 1 is provided with a switch transmission assembly with an automatic opening and closing function.

[0053] The switch transmission assembly comprises a transmission member 4 and a power assembly for providing power to the transmission member 4 to slide forward and backward. The front end of the transmission member 4 is fixed to the rotating arm 2, and the rear end of the transmission member 4 is fixed to the power assembly. The power assembly drives the transmission member 4 to slide forward and backward, so that the rotating arm 2 swings with the sliding of the transmission member 4, and the opening and closing of the door body are completed. Through the door opening and closing mechanism, the door body can be automatically opened and closed without setting a handle structure, which can effectively reduce the kitchen space, ensure the overall appearance of the product, and improve the operation comfort of the whole machine.

[0054] The switch transmission assembly further comprises an elastic member 5, the front end of the elastic member 5 is slidably connected to the fixed seat 1, and the rear end of the elastic member 5 is fixedly connected to the fixed seat 1.

[0055] The front end of the elastic member 5 is connected to the fixed seat 1 through a sliding shaft 8, and the front end of the elastic member 5 is hung on the sliding shaft 8. A limiting hole 9 for limiting the sliding position of the sliding shaft 8 is formed in the fixed seat 1. The limiting hole 9 is formed on the two sides of the fixed seat 1, and the two ends of the sliding shaft 8 are respectively fixed in the limiting hole 9.

[0056] The rear end of the elastic member 5 is connected to the fixed seat 1 through a third fixed shaft 10, the rear end of the elastic member 5 is hung on the third fixed shaft 10, and the two ends of the third fixed shaft 10 are fixed to the two sides of the fixed seat 1.

[0057] The rotating arm 2 is connected to the front end of the elastic member 5. Further, the rotating arm 2 is connected to the front end of the elastic member 5 through a connecting member 6, the front end of the connecting member 6 is connected to the rotating arm 2 through a second fixed shaft 7, and the rear end of the connecting member 6 is fixed to the front end of the elastic member 5. The connecting member 6 is hinged to the rotating arm 2 through the second fixed shaft 7, and pushes the rotating arm 2 to swing when the connecting member 6 slides with the transmission member 4. In order to improve the stability, the connecting member 6 adopts a U-shaped structure.

[0058] The rear end of the connecting member 6 is fixed to the front end of the elastic member 5 through a sliding block 11, and the front and rear ends of the sliding block 11 are respectively hinged to the connecting member 6 and the sliding shaft 8. The sliding block 11 adopts a "person" shape structure, the front end is inserted into the U-shaped structure slot of the connecting member 6 and is hinged thereto, and the rear end two sides are respectively provided with through holes and are hinged to the sliding shaft 8. The sliding block 11 adopts a "person" shape structure, which not only connects the connecting member 6 and the elastic member 5, but also avoids affecting the hanging of the front end of the elastic member 5, and further provides a fixing surface for the fixing between the transmission member 4 and the sliding block 11.

[0059] The front end of the transmission member 4 is fixed to the front end of the elastic member 5, specifically, the front end of the transmission member 4 is fixedly connected to the sliding block 11. The transmission member 4 is arranged at the top of the elastic member 5, penetrates through the entire elastic member 5, and the front end is fixed to the top of the sliding block 11.

[0060] Through setting the connecting piece 6 and the sliding block 11, the force of the transmission piece 4 can be stably transmitted to the rotating arm 2, so that the rotating arm 2 swings more stably.

[0061] When the door body needs to be opened, the power assembly provides power to the transmission piece 4, the transmission piece 4 slides backward, the transmission piece 4 drives the sliding block 11, the sliding shaft 8 and the connecting piece 6 to slide backward, and the rotating arm 2 swings to open the door body. In the process of swinging of the rotating arm 2, the elastic piece 5 is pressed to provide a forward elastic force, the elastic force provided by the elastic piece 5 keeps balance with the gravity of the door body, so that the door body can be suspended. In addition, the elastic force provided by the elastic piece 5 also reduces the excessive force burden of the transmission piece 4 and the power assembly caused by the excessive gravity of the door body, so as to avoid the door body from falling due to failure of the power assembly, and to avoid damage to the door opening and closing mechanism, the door body itself and the user.

[0062] When the door body needs to be closed, the power assembly provides power to the transmission piece 4, the transmission piece 4 slides forward, the transmission piece 4 drives the sliding block 11, the sliding shaft 8 and the connecting piece 6 to slide forward, and the rotating arm 2 swings to close the door body. In the closing process, the elastic force provided by the elastic piece 5 can reduce the power provided by the power assembly, so that the door body can be closed more stably.

[0063] The power assembly comprises a motor driving mechanism 12, a gear box reduction structure 13 and a transmission piece driving structure 14, wherein the power shaft of the motor driving mechanism 12 is connected with the gear box reduction structure 13, the power output end of the gear box reduction structure 13 is connected with the transmission piece driving structure 14, and the transmission piece driving structure 14 is fixed on the fixed seat 1.

[0064] The gear box reduction structure 13 is connected with the motor driving mechanism 12 to reduce the high-speed rotation provided by the motor. The transmission piece driving structure 14 is used for converting the rotating mechanical force into a transverse force. In the embodiment, the transmission piece driving structure is a lead screw structure, and the output end of the transmission piece driving structure 14 is connected with the rear end of the transmission piece 4.

[0065] As shown in Figure 13 The application also relates to a household appliance, such as a steamer or an oven, which is provided with the door body structure.

[0066] The above describes the embodiments of the application, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principles of the application, which should also be considered as the protection scope of the application.

Claims

1. A bidirectional damping hinge, characterized in that: Includes a base, a swing arm rotatably mounted at one end of the base, and a bidirectional damping assembly mounted on the base. One end of the bidirectional damping assembly is slidably connected to the swing arm via a sliding shaft, and the other end of the bidirectional damping assembly is connected to the base via an elastic element. The bidirectional damping component has two extreme positions and has a damping effect when approaching the extreme position. The bidirectional damping component can be moved between the two extreme positions by rotating the swing arm. The bidirectional damping assembly includes a slider that is slidably mounted on a base and a connecting rod hinged to one end of the slider. The other end of the connecting rod is slidably connected to a swing arm via a sliding shaft. The other end of the slider is connected to the base via an elastic element, and the elastic element is configured to pull the slider away from the swing arm. The swing arm is also connected to a limiting claw, which is rotatably connected to the swing arm via a hinge shaft. Rotating the limiting claw can lock it onto the connecting rod to limit the rotation angle of the swing arm. The bidirectional damping assembly also includes a mounting bracket, the damper is mounted on the base via the mounting bracket, and a return spring is sleeved on the damper; The card holder has a mounting groove, and the damper is placed in the mounting groove. The width of the mounting groove is the same as the outer diameter of the damper.

2. The bidirectional damping hinge according to claim 1, characterized in that: The bidirectional damping assembly includes a damper mounted on a base; a limiting groove with a length greater than that of the damper is provided on the sliding member, the limiting groove is fitted onto the damper, when the swing arm rotates, it drives the sliding member to slide through the connecting rod, and when the sliding member slides to a position close to the limit, the end of the limiting groove contacts the damper and compresses the damper.

3. A bidirectional damping hinge according to claim 2, characterized in that: The swing arm's range of motion is divided into a first motion region, a second motion region, and a third motion region. In the first and third motion regions, the end of the limiting groove is in contact with the damper; in the second motion region, the end of the limiting groove is disengaged from the damper.

4. A bidirectional damping hinge according to claim 3, characterized in that: When the swing arm is in the first motion region, the angle between the swing arm and the connecting rod is 85° to 105°; when the swing arm is in the second motion region, the angle between the swing arm and the connecting rod is 105° to 160°; and when the swing arm is in the third motion region, the angle between the swing arm and the connecting rod is 160° to 177°.

5. A bidirectional damping hinge according to claim 1, characterized in that: The swing arm is provided with a sliding groove, which is eccentrically located on one side of the swing arm; the sliding shaft is installed in the sliding groove and slides along the sliding groove when the swing arm rotates, and the length of the sliding groove limits the rotation range of the swing arm.

6. A bidirectional damping hinge according to claim 5, characterized in that: The slide is an arc-shaped groove, and a limiting protrusion is provided on the side of the slide near the bidirectional damping component. The limiting protrusion causes the curvature of the slide to change. When the sliding shaft passes the limiting protrusion, the resistance experienced by the sliding shaft increases.

7. A bidirectional damping hinge according to claim 1, characterized in that: The card holder has claws on both sides and engages with the base; there is a certain gap between the end of the damper and the card holder, so that the damper can move relative to the card holder.

8. A bidirectional damping hinge according to claim 2, characterized in that: The sliding member is a long strip of metal plate. The card holder has a groove for the sliding member to pass through. The limiting groove is a square through hole in the middle of the sliding member. The damper is located in the square through hole and is compressed when the sliding member slides to a certain position.

9. A door structure, characterized in that, Includes, as described in any one of claims 1-8, a bidirectional damping hinge, at least mounted on one side of the door, wherein the swing arm moves relative to the base when the door is opened and closed. An automatic door opening and closing mechanism, installed on the other side of the door, includes a fixed base and a rotating arm. The rotating arm is hinged to the fixed base via a first fixed shaft. The fixed base is equipped with a switch transmission assembly with automatic opening and closing function. The switch transmission assembly includes an elastic element, a transmission element, and a power component. The front end of the elastic element is connected to the rotating arm, and the rear end is fixedly connected to the fixed base. The front end of the transmission element is fixed to the front end of the elastic element and passes through the entire elastic element. The rear end is fixed to the power component, and the power component is used to provide power to the transmission element.

10. A household appliance configured with the door structure as described in claim 9.

Images