Damping hinge

Abstract

The utility model relates to a damping hinge which comprises a hinge cup, a shell, a first linkage piece, a second linkage piece, a torsional spring, a damper, a bearing seat and a base. A mounting groove is formed in the bottom of the shell, a first rotating shaft is mounted in the mounting groove, and sliding grooves are formed in the two side wall surfaces of the mounting groove; the torsional spring sleeves the first rotating shaft, one end of the torsional spring is connected with the shell, and the other end of the torsional spring is connected with the first linkage piece or the second linkage piece; the damper is arranged in the mounting groove, and a piston rod of the damper abuts against the first rotating shaft or the torsional spring; the bearing seat is arranged in the mounting groove and connected with the damper in a clamped mode so that the bearing seat can drive a cylinder body of the damper to move front and back, sliding parts are formed on the two sides of the bearing seat, the sliding parts are arranged in the corresponding sliding grooves in a front-back sliding mode, and the bearing seat is in transmission connection with the second linkage piece; the base is used for being fixed to a second component. According to the damping hinge, through structural adjustment, the structure of the bearing seat is simplified, and then the production cost and the production difficulty of the bearing seat are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, and in particular to a damping hinge. Background Technology

[0002] Hinges are mainly used in windows, furniture doors and other components. They are mainly classified into stainless steel hinges and iron hinges according to their materials. To provide people with a better experience, damping hinges (also known as buffer hinges) have been developed. Damping hinges have internal or external damping devices. Their feature is that they provide a buffering function when the cabinet door is closed, minimizing the noise caused by the door colliding with the cabinet body when it closes.

[0003] Existing hinges typically include a damper and a damper support. For example, Chinese Patent Publication No. CN111719973A discloses "A Damping Hinge Applied to Furniture," in which the damper support is located inside the housing. The left and right directions are oriented through the tubes on both sides, and the up and down directions are restricted through the cooperation of the sliding plane and the limiting rod, so that the damper support can slide stably inside the housing. This, in turn, cooperates with the damper to generate resistance against the return of the torsion spring.

[0004] This type of hinge structure is reliable and achieves good buffering effect. However, the structure of the damper bearing seat is relatively complex, especially the design of the fit between the limit rod and the sliding plane, which increases the number of manufacturing steps and results in a long production cycle. This not only increases production costs but also reduces the yield rate of the hinge.

[0005] Therefore, it is necessary to provide a technical solution to this problem. Utility Model Content

[0006] To address the problem of complex load-bearing structure in existing hinges, this utility model provides a damping hinge, comprising:

[0007] A hinge cup, which is used to fix the first member;

[0008] The outer casing has a mounting groove at its bottom, in which a first rotating shaft is installed, and sliding grooves are formed on both sides of the mounting groove.

[0009] The first linkage has one end rotatably connected to the hinge cup and the other end rotatably connected to the outer shell;

[0010] The second linkage has one end rotatably connected to the hinge cup and the other end rotatably connected to the outer shell;

[0011] A torsion spring, wherein the torsion spring is sleeved on the first rotating shaft, one end of the torsion spring is connected to the outer casing, and the other end is connected to the first linkage or the second linkage;

[0012] A damper, wherein the damper is disposed in the mounting groove, and its piston rod abuts against the first rotating shaft or the torsion spring;

[0013] The support seat is disposed in the mounting groove and fixedly connected to the damper so that the support seat can drive the cylinder of the damper to move back and forth. Sliding parts are formed on both sides of the support seat, and the sliding parts are slidably disposed in the corresponding sliding grooves. The support seat is connected to the second linkage in a transmission.

[0014] A base for fixing to a second component, the base being detachably connected to the housing.

[0015] In some embodiments, a first mounting portion is formed on the sidewall of the damper, and a second mounting portion adapted to the first mounting portion is formed inside the bearing seat. The first mounting portion and the second mounting portion cooperate to achieve a fixed connection between the bearing seat and the damper.

[0016] In some embodiments, the first mounting portion is a groove formed on the damper, and the second mounting portion is a protrusion formed on the support that matches the groove; or,

[0017] The first mounting portion is a protrusion formed on the damper, and the second mounting portion is a groove formed on the support that is adapted to the protrusion.

[0018] In some embodiments, there are two grooves, which are arranged back-to-back on both sides of the damper; there are two corresponding protrusions, which are fitted into the corresponding grooves.

[0019] In some embodiments, the groove has an arc-shaped cross-section; the protrusion has an arc-shaped cross-section that matches the groove; and the protrusion is fitted into the groove.

[0020] In some embodiments, the interior of the bearing seat is formed with an arcuate surface that matches the outer wall of the damper.

[0021] In some embodiments, the groove is stamped onto the housing.

[0022] In some embodiments, the slide is L-shaped, and the vertical section of the slide away from the horizontal section has a mounting opening; the sliding part can be installed into the slide along the mounting opening.

[0023] In some embodiments, the second linkage is provided with a hook portion, and the support seat is provided with a hanging opening portion that cooperates with the hook portion.

[0024] In some embodiments, one end of the first linkage is rotatably connected to the housing via the first pivot, the other end of the first linkage is rotatably connected to the hinge cup via the third pivot, the second linkage is rotatably connected to the housing via the second pivot, and the second linkage is rotatably connected to the hinge cup via the fourth pivot.

[0025] The beneficial effects of the damping hinge involved in this utility model are as follows:

[0026] 1. In this application, the bearing seat and the damper are directly fixedly connected. This can shorten the length required for the bearing seat, thereby reducing the material consumption of the bearing seat, reducing production costs, and also reducing the production difficulty of the bearing seat and improving the yield rate of the hinge.

[0027] 2. This application adds a sliding groove to the outer shell. The sliding groove wall limits the sliding parts on both sides of the bearing seat. In this way, the bearing seat can be aligned in the left and right and up and down directions by relying on the sliding parts, so that the bearing seat can slide stably in the front and back directions. Compared with the existing hinges, the hinge of this application does not require the flat part to be stamped on the top of the bearing seat, nor does it require the limiting rod to be riveted on the outer shell. This reduces the processing difficulty of the hinge, improves the yield rate of the hinge, and also reduces the production cost of the hinge. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a damping hinge involved in this utility model;

[0029] Figure 2 This is a structural schematic diagram of a damping hinge according to this utility model from another perspective;

[0030] Figure 3 This is a cross-sectional schematic diagram of a damping hinge involved in this utility model;

[0031] Figure 4 This is an exploded view of a damping hinge involved in this utility model.

[0032] Figure 5 This is a schematic diagram showing the connection between the outer shell and the bearing seat in a damping hinge according to this utility model;

[0033] Figure 6 This is a cross-sectional schematic diagram of the outer shell of a damping hinge according to this utility model;

[0034] Figure 7 This is a schematic diagram of the first embodiment of the damper in a damping hinge according to this utility model;

[0035] Figure 8This is a schematic diagram of the first embodiment of the bearing seat in a damping hinge according to this utility model;

[0036] Figure 9 This is a structural schematic diagram from another perspective of the first embodiment of the bearing seat in a damping hinge according to this utility model;

[0037] Figure 10 This is a schematic diagram of the second embodiment of the damper in a damping hinge according to this utility model;

[0038] Figure 11 This is a schematic diagram of the second embodiment of the bearing seat in a damping hinge according to this utility model;

[0039] Figure 12 This is a structural schematic diagram from another perspective of the second embodiment of the bearing seat in a damping hinge involved in this utility model.

[0040] Figure label:

[0041] 1. Hinge cup; 2. Housing; 3. First linkage; 4. Second linkage; 5. Torsion spring; 6. Damper; 7. Bearing seat; 8. Base;

[0042] 11. Third pivot; 12. Fourth pivot;

[0043] 21. Mounting slot; 22. First rotating shaft; 23. Slide groove; 24. Second rotating shaft;

[0044] 41. Hook section;

[0045] 61. First assembly section; 62. Tank body;

[0046] 71. Sliding section; 72. Second assembly section; 73. Hanging part; 74. Arc surface. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0048] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component at the same time; when a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component at the same time.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In the description of the embodiments of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0051] To address the issue of complex structure of the bearing seat 7 in existing hinges, this embodiment provides a damping hinge, as referenced. Figures 1-8 The damping hinge includes a hinge cup 1, a housing 2, a first linkage 3, a second linkage 4, a torsion spring 5, a damper 6, a bearing seat 7, and a base 8.

[0052] The hinge cup 1 is used to fix it to the first component; the bottom of the outer shell 2 is provided with a mounting groove 21, in which a first rotating shaft 22 is installed, and both sides of the mounting groove 21 are formed with sliding grooves 23; one end of the first linkage 3 is rotatably connected to the hinge cup 1, and the other end of the first linkage 3 is rotatably connected to the outer shell 2; one end of the second linkage 4 is rotatably connected to the hinge cup 1, and the other end of the second linkage 4 is rotatably connected to the outer shell 2; a torsion spring 5 is sleeved on the first rotating shaft 22, one end of the torsion spring 5 is connected to the outer shell 2, and the other end is connected to the first linkage 22. The damper 6 is located in the mounting groove 21, and its piston rod abuts against the first rotating shaft 22 or the torsion spring 5. The bearing seat 7 is located in the mounting groove 21 and is fixedly connected to the damper 6 so that the bearing seat 7 can drive the cylinder of the damper 6 to move back and forth. The bearing seat 7 has sliding parts 71 on both sides, and the sliding parts 71 are slidably arranged in the corresponding sliding grooves 23. The bearing seat 7 is connected to the second linkage 4 in a transmission. The base 8 is used to fix the second component, and the base 8 is detachably connected to the outer shell 2.

[0053] When the damping hinge of this embodiment is used, with the cooperation of the first linkage 3, the second linkage 4 and the torsion spring 5, the hinge cup 1 can rotate relative to the outer shell 2, so that the included angle between the first component and the second component changes. When the hinge cup 1 rotates relative to the outer shell 2 to reduce the included angle between the first component and the second component, the second linkage 4 drives the support seat 7 to move. Under the action of the sliding part 71, the support seat 7 moves in the front-back direction, so that the support seat 7 pushes the cylinder of the damper 6, causing the piston rod of the damper 6 to retract, thereby causing the damper 6 to generate resistance against the return of the torsion spring 5, achieving a buffering effect.

[0054] In this embodiment, the damping hinge limits the sliding portions 71 on both sides of the bearing seat 7 through the sliding groove 23 on the outer shell 2. In this way, the bearing seat 7 can be aligned in the left-right and up-down directions by relying on the sliding portions 71, so that the bearing seat 7 can slide stably in the front-back direction. Compared with existing hinges, the hinge of this application does not require the flat portion to be stamped on the top of the bearing seat 7, nor does it require the limiting rod to be riveted on the outer shell 2, which reduces the processing difficulty of the hinge, improves the yield rate of the hinge, and also reduces the production cost of the hinge.

[0055] Furthermore, it is understandable that in existing damping hinges, the bearing seat 7 is driven by the rear side plate, and to ensure that the second linkage 4 can be connected to the bearing seat 7, the bearing seat 7 is relatively long, resulting in a large amount of material consumption and high production difficulty. This embodiment changes the connection method between the bearing seat 7 and the damper 6, allowing the bearing seat 7 and the damper 6 to be directly and fixedly connected. The connection point can be located at the front or middle of the damper. This shortens the required length of the bearing seat 7, thereby reducing material consumption, lowering production costs, reducing the production difficulty of the bearing seat 7, and improving the hinge yield rate.

[0056] In this embodiment, a first mounting portion 61 is formed on the side wall of the damper 6, and a second mounting portion 72 adapted to the first mounting portion 61 is formed inside the support 7. The first mounting portion 61 and the second mounting portion 72 cooperate to achieve a fixed connection between the support 7 and the damper 6. The bottom wall of the outer shell 2 and the inner wall of the support 7 control the damper 6 in both the left-right and up-down directions. (Reference) Figures 7-12 The first assembly part 61 can be formed at the front end of the damper 6 so that the length of the bearing seat 7 is only one-half or one-third of the length of the damper 6, thereby significantly reducing the length of the bearing seat 7 and thus reducing production costs.

[0057] As an optional design, the first mounting part 61 is a groove formed on the damper 6, and the second mounting part 72 is a protrusion formed on the support 7 that matches the groove; alternatively, the first mounting part 61 is a protrusion formed on the damper 6, and the second mounting part 72 is a groove formed on the support 7 that matches the protrusion; furthermore, the first mounting part 61 is a structure combining wavy, toothed, or other grooves and protrusions formed on the damper 6, and the second mounting part 72 is a wavy, toothed, or other structure formed on the support 7 that matches the first mounting part 61. It should be noted that the first mounting part 61 is located outside the travel stroke of the piston inside the damper 6 to avoid affecting the damping effect of the damper 6. In addition, other structures can also be used for the first mounting part 61 and the second mounting part 72 to achieve a fixed connection between the damper 6 and the support 7, and no limitation is made here.

[0058] In some embodiments, two grooves are provided, as shown in the reference. Figures 7-9 Two grooves are arranged opposite to each other on both sides of the damper 6; two corresponding protrusions are provided, and the two protrusions are fitted into the corresponding grooves. In this way, not only can the connection between the bearing seat 7 and the damper 6 be realized, but the bearing seat 7 can also control the damper 6 to prevent the damper 6 from rotating, thereby improving the stability of the hinge opening and closing.

[0059] In some embodiments, the groove has an arc-shaped cross-section; the protrusion has an arc-shaped cross-section that matches the groove; the protrusion is fitted into the groove. (Reference) Figures 10-12 This design increases the contact area between the bearing seat 7 and the damper 6, thereby improving the connection stability between the two and making the opening and closing of the hinge smoother.

[0060] In this embodiment, the support 7 and the damper 6 can also be fixedly connected by means of bonding, welding or other methods, and there is no limitation.

[0061] In this embodiment, the interior of the support 7 has an arc surface 74 that matches the outer wall of the damper 6; Reference Figure 9 and Figure 12 When the bearing seat 7 and the damper 6 are installed in the mounting groove 21, the arc surface 74 of the bearing seat 7 controls the damper 6 so that the damper 6 is located in the middle of the mounting groove 21. Thus, when the hinge is closed, the damper 6 can better generate damping against the return of the torsion spring 5, thereby improving the smoothness of the hinge and extending the service life of the damper 6.

[0062] In this embodiment, the second linkage 4 is provided with a hook portion 41, and the supporting seat 7 is provided with a hanging opening portion 73 that cooperates with the hook portion 41; for details, please refer to Figure 2 and Figure 4When the hinge is closed, the hook part 41 can rotate, and the hanging part 73 pulls the bearing seat 7 to move closer to the first rotating shaft 22, thereby pushing the cylinder of the damper 6 to move. The piston rod of the damper 6 is fixed under the restriction of the first rotating shaft 22 or the torsion spring 5, so that the damper 6 generates a damping force that acts in the opposite direction on the second linkage 4, slowing down its rotation speed and achieving a noise reduction effect.

[0063] In this embodiment, the slide groove 23 is stamped onto the outer shell 2. This allows the slide groove 23 to function as both a limiting structure and a reinforcing structure, increasing the tensile and bending strength of the side plates of the outer shell 2. Conversely, even with a reduced side plate wall thickness, the reinforcement provided by the slide groove 23 ensures that the tensile and bending strength of the side plates of the outer shell 2 is no weaker than that of existing hinges. This design reduces the amount of material used in the outer shell 2, thereby lowering its production cost.

[0064] As an optional design, the slide 23 is L-shaped, and the vertical section of the slide 23 away from the horizontal section has an installation opening; Reference Figures 5-6 When installing the bearing seat 7 and the damper 6, the bearing seat 7 and the damper 6 can be assembled first, and then the sliding part 71 can be installed into the vertical section of the slide groove 23 along the installation port. Then, the sliding part 71 can be pushed into the horizontal section of the slide groove 23, and the hook part 41 can be connected to the hanging part 73 to restrict the bearing seat 7 within the horizontal section of the slide groove 23. This design makes the installation of the bearing seat 7 and the damper 6 more convenient and efficient.

[0065] In this embodiment, one end of the first linkage 3 is rotatably connected to the outer casing 2 via a first rotating shaft 22, and the other end of the first linkage 3 is rotatably connected to the hinge cup 1 via a third rotating shaft 11. The second linkage 4 is rotatably connected to the outer casing 2 via a second rotating shaft 24, and the second linkage 4 is rotatably connected to the hinge cup 1 via a fourth rotating shaft 12. By using a first rotating shaft 22 with a torsion spring 5 to rotatably connect the first linkage 3, the number of rotating shafts can be reduced, saving installation space and reducing production costs.

[0066] In this embodiment, a groove 62 is formed along the edge of the rear end outer wall of the cylinder body of the damper 6; wherein, the groove 62 is annular, so that the rear end of the cylinder body forms a convex portion with a reduced outer diameter, and the convex portion defines a limiting chamber at the rear end of the cylinder body, and the end of the elastic element inside the damper 6 can abut against the limiting chamber, which plays a corrective role for the elastic element and extends the service life of the elastic element. The internal structure of the damper 6 is not shown in the accompanying drawings, please refer to Chinese patent document with application number 202010639019.6 for details.

[0067] In this embodiment, the other structures of the damping hinge are all existing designs and will not be described in detail here.

[0068] The above description is only a preferred embodiment of the present utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A damping hinge, characterized in that, include: A hinge cup, which is used to fix the first member; The outer casing has a mounting groove at its bottom, in which a first rotating shaft is installed, and sliding grooves are formed on both sides of the mounting groove. The first linkage has one end rotatably connected to the hinge cup and the other end rotatably connected to the outer shell; The second linkage has one end rotatably connected to the hinge cup and the other end rotatably connected to the outer shell; A torsion spring, wherein the torsion spring is sleeved on the first rotating shaft, one end of the torsion spring is connected to the outer casing, and the other end is connected to the first linkage or the second linkage; A damper, wherein the damper is disposed in the mounting groove, and its piston rod abuts against the first rotating shaft or the torsion spring; The support seat is disposed in the mounting groove and fixedly connected to the damper so that the support seat can drive the cylinder of the damper to move back and forth. Sliding parts are formed on both sides of the support seat, and the sliding parts are slidably disposed in the corresponding sliding grooves. The support seat is connected to the second linkage in a transmission. A base for fixing to a second component, the base being detachably connected to the housing.

2. The damping hinge according to claim 1, characterized in that, A first assembly portion is formed on the side wall of the damper, and a second assembly portion adapted to the first assembly portion is formed inside the bearing seat. The first assembly portion and the second assembly portion cooperate to achieve a fixed connection between the bearing seat and the damper.

3. The damping hinge according to claim 2, characterized in that, The first mounting portion is a groove formed on the damper, and the second mounting portion is a protrusion formed on the support that matches the groove; or, The first mounting portion is a protrusion formed on the damper, and the second mounting portion is a groove formed on the support that is adapted to the protrusion.

4. A damping hinge according to claim 3, characterized in that, The damper has two grooves, which are arranged back-to-back on both sides of the damper; the damper also has two corresponding protrusions, which are fitted into the corresponding grooves.

5. A damping hinge according to claim 3, characterized in that, The groove has an arc-shaped cross-section; the protrusion has an arc-shaped cross-section that matches the groove; the protrusion is fitted into the groove.

6. A damping hinge according to claim 1, characterized in that, The interior of the bearing seat has an arc surface that matches the outer wall of the damper.

7. A damping hinge according to claim 1, characterized in that, The groove is stamped onto the outer shell.

8. A damping hinge according to claim 7, characterized in that, The slide is L-shaped, and the vertical section of the slide away from the horizontal section has an installation opening. The sliding part can be installed into the slide groove along the mounting port.

9. A damping hinge according to claim 1, characterized in that, The second linkage is provided with a hook portion, and the support seat is provided with a hanging opening portion that cooperates with the hook portion.

10. A damping hinge according to claim 1, characterized in that, One end of the first linkage is rotatably connected to the outer casing via the first rotating shaft, and the other end of the first linkage is rotatably connected to the hinge cup via the third rotating shaft. The second linkage is rotatably connected to the outer casing via the second rotating shaft, and the second linkage is rotatably connected to the hinge cup via the fourth rotating shaft.

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