Buffering hinge and opening and closing equipment

Abstract

The utility model relates to a buffering hinge and opening and closing equipment. The buffering hinge comprises a first connecting piece and a third connecting piece hinged to the inner side of the first connecting piece. The damping assembly comprises a damping shell which is of a hollow structure with an opening in the first end and is arranged at the bottom of the inner side of the first connecting piece in a sliding mode; the first end of the damping rod is fixedly connected to the inner side of the first connecting piece, the second end of the damping rod is elastically connected into the hollow structure, and the damping rod slides in the hollow structure and generates damping force with the inner wall of the hollow structure; the third connecting piece rotates to be close to the first connecting piece and extrudes the damping shell in the first connecting piece, so that the damping rod retracts back to the damping shell, at the moment, damping force is generated between the damping rod and the damping shell, and the buffering hinge is slowly closed. The third connecting piece rotates away from the first connecting piece and the damping shell, the damping rod extends out of the damping shell, and at the moment, the damping shell resets under the action of elastic force. The structure is simple, installation is convenient, and the service life of the buffer hinge is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of opening and closing equipment technology, and in particular to a buffer hinge and opening and closing device. Background Technology

[0002] Opening and closing devices, such as built-in refrigerator doors, typically include a mounting base fixed to the refrigerator body and a hinge base fixed to the refrigerator door. A hinge connects the mounting base and the hinge base, and the hinge includes at least two connecting members, each hinged between the mounting base and the hinge base. To achieve automatic opening and closing, a spring-loaded element is also hinged between the connecting members and the mounting base. When the hinge base rotates relative to the mounting base to the closing angle, the spring-loaded element pulls the hinge to accelerate the closing of the door. Because the door closes quickly under the pull of the spring-loaded element, the impact force during closing can easily generate significant noise and cause the opening and closing device to vibrate, potentially leading to loosening or damage to the device and affecting the user experience.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a buffer hinge and opening / closing device to solve the problem that the door closes too quickly under the pull of the elastic element, affecting the user experience.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A buffer hinge includes a first connecting member and a third connecting member hinged to the inner side of the first connecting member. The first connecting member is a semi-enclosed frame structure with its opening facing upwards. The buffer hinge also includes a damping assembly, which includes: a damping shell, a hollow structure with an opening at one end, slidably disposed at the bottom inner side of the first connecting member; and a damping rod, with one end fixedly connected to the inner side of the first connecting member and the second end elastically connected to the hollow structure. The damping rod slides within the hollow structure and generates a damping force with the inner wall of the hollow structure. The third connecting member rotates closer to the first connecting member and presses against the damping shell, causing the damping rod to retract into the damping shell. The third connecting member also rotates away from the first connecting member and the damping shell, causing the damping rod to extend out of the damping shell.

[0007] A further technical solution is that the buffer hinge includes: a first pin that passes through the first connector and abuts against the first end of the damping rod; and a second pin that passes through the first connector and abuts against the upper end of the damping shell.

[0008] A further technical solution is that the second end of the damping shell has an inclined surface, which is inclined toward the first end.

[0009] A further technical solution is that a protrusion is provided at the lower end of the third connector corresponding to the inclined surface; wherein, when the third connector is rotated until the protrusion just contacts the inclined surface, the lower end of the protrusion and the inclined surface are in surface contact.

[0010] A further technical solution is to chamfer the corner at the lower end of the protrusion.

[0011] A further technical solution is that a sliding groove is formed on the bottom inner side of the first connector, and a slider is provided at the lower end of the damping shell, the slider being inserted into the sliding groove.

[0012] A further technical solution is that the third connector is a semi-enclosed frame structure with an opening in the same direction as the first connector. The buffer hinge further includes: a second connector, the second end of which extends into the third connector and is hinged to the inner side of the third connector, and its position corresponds to the upper end of the first connector; and a fourth connector, the second end of which is hinged to the second end of the inner side of the first connector.

[0013] This utility model also discloses an opening and closing device equipped with the aforementioned buffer hinge, characterized in that the opening and closing device includes a housing and a door, a fixed seat is installed on a first surface of the housing, and a hinge seat is installed on a second surface of the door, the hinge seat being positioned corresponding to the fixed seat, and the fixed seat and the hinge seat being a semi-enclosed frame structure with openings facing each other; wherein, the first end of the first connecting member is hinged to the first end of the inner side of the fixed seat; the second end of the third connecting member is hinged to the first end of the inner side of the hinge seat; the first end of the second connecting member is hinged to the first end of the inner side of the fixed seat; the first end of the fourth connecting member is hinged to the second end of the inner side of the hinge seat; the hinge seat rotates to fold or open with the hinge point between the first connecting member and the fixed seat as a fixed point.

[0014] The beneficial effects of this utility model embodiment are as follows:

[0015] (I) The buffer hinge of this utility model embodiment includes a first connecting member and a third connecting member hinged to the inner side of the first connecting member. The third connecting member rotates closer to the first connecting member and presses against the damping shell inside the first connecting member, causing the damping rod to retract into the damping shell. At this time, a damping force is generated between the damping rod and the damping shell, causing the buffer hinge to close slowly. The third connecting member rotates away from the first connecting member and the damping shell, causing the damping rod to extend out of the damping shell. At this time, the damping shell resets under the action of elastic force. The damping assembly has a simple structure and is easy to install. It can realize the slow closing and automatic reset of the buffer hinge, which can reduce the collision of the buffer hinge's own structure when it closes and extend the service life of the buffer hinge.

[0016] (ii) Furthermore, the fixed seat, hinge seat, first connector, second connector, third connector, and fourth connector are hinged to form a six-bar linkage, thereby enabling the hinge seat to rotate relative to the fixed seat to open and close. By adding an automatic closing damping effect to the buffer hinge, the impact when the opening and closing device closes can be reduced, noise can be reduced, and the internal components of the opening and closing device can be effectively protected, extending the service life of the opening and closing device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the buffer hinge of this utility model when it rotates to the point where the protrusion and the inclined surface are just separated.

[0018] Figure 2 This is an isometric view of the buffer hinge of this utility model in the closed state.

[0019] Figure 3 This is a schematic diagram of the internal structure of the buffer hinge of this utility model in the closed state.

[0020] Figure 4 This is an isometric view of the buffer hinge of this utility model when it is opened to its maximum angle.

[0021] Figure 5 This is a schematic diagram of the internal structure of the buffer hinge of this utility model when it is opened to its maximum angle.

[0022] In the picture:

[0023] 1. Buffer hinge; 11. First connector; 111. Sliding groove; 12. Second connector; 13. Third connector; 131. Protrusion; 14. Fourth connector; 2. Damping assembly; 21. Damping shell; 211. Inclined surface; 212. Slider; 22. Damping rod; 23. First pin; 24. Second pin; 3. Fixed seat; 4. Hinge seat. Detailed Implementation

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0026] First embodiment:

[0027] This embodiment discloses a buffer hinge 1.

[0028] Figure 1 This is a schematic diagram of the internal structure of the buffer hinge of this utility model when it rotates to the point where the protrusion and the inclined surface are just separated. Figure 1 As shown, the buffer hinge 1 includes a first connector 11 and a third connector 13 hinged to the inner side of the first connector 11. The first connector 11 is a semi-enclosed frame structure with the opening facing upward.

[0029] The buffer hinge 1 also includes a damping assembly 2, which includes a damping shell 21 and a damping rod 22.

[0030] like Figure 1 As shown, the damping shell 21 is a hollow structure with an opening at the first end, and is slidably disposed on the bottom inner side of the first connector 11. Exemplarily, the buffer hinge 1 includes a first pin 23 and a second pin 24. The first pin 23 passes through the first connector 11 and abuts against the first end of the damping rod 22, restricting the damping rod 22 from moving to the left relative to the first connector 11. The second pin 24 passes through the first connector 11 and abuts against the upper end of the damping shell 21, restricting the damping shell 21 from moving up and down relative to the first connector 11.

[0031] The first end of the damping rod 22 is fixedly connected to the inner side of the first connecting member 11, and the second end is elastically connected to the hollow structure. The damping rod 22 slides within the hollow structure and generates a damping force with the inner wall of the hollow structure. The third connecting member 13 rotates closer to the first connecting member 11 and presses against the damping shell 21, causing the damping rod 22 to retract into the damping shell 21; the third connecting member 13 then rotates away from the first connecting member 11 and the damping shell 21, causing the damping rod 22 to extend out of the damping shell 21.

[0032] like Figure 1 As shown, the second end of the damping shell 21 has a slope 211, which is inclined towards the first end to facilitate withstanding the compression of the third connector 13. A protrusion 131 is provided at the lower end of the third connector 13 corresponding to the slope 211. When the third connector 13 rotates until the protrusion 131 just contacts the slope 211, there is surface contact between the lower end of the protrusion 131 and the slope 211, reducing wear caused by the collision of the protrusion 131 with the slope 211 when the buffer hinge 1 is closed, thus improving the service life of the damping assembly 2. Preferably, the lower corner of the protrusion 131 is chamfered to further reduce wear caused by the compression between the protrusion 131 and the slope 211.

[0033] like Figure 1 As shown, further, a sliding groove 111 is provided on the bottom inner side of the first connector 11, and a slider 212 is provided at the lower end of the damping shell 21. The slider 212 is inserted into the sliding groove 111 to limit the sliding range of the damping shell 21.

[0034] Furthermore, the third connector 13 is a semi-enclosed frame structure with its opening facing the same direction as the first connector 11. The buffer hinge 1 also includes a second connector 12 and a fourth connector 14. The second end of the second connector 12 extends into the third connector 13 and is hinged to the inside of the third connector 13, and its position corresponds to the upper end of the first connector 11.

[0035] The second end of the fourth connector 14 is hinged to the second end of the inner side of the first connector 11.

[0036] Figure 2 This is an isometric view of the buffer hinge of this utility model in the closed state. Figure 3 This is a schematic diagram of the internal structure of the buffer hinge of this utility model in the closed state. Figure 4 This is an isometric view of the buffer hinge of this utility model when it is opened to its maximum angle. Figure 5 This is a schematic diagram of the internal structure of the buffer hinge of this utility model when it is opened to its maximum angle.

[0037] In this embodiment, as Figure 2 and Figure 3 As shown, the third connector 13 rotates closer to the first connector 11 and presses against the damping shell 21, causing the damping rod 22 to retract into the damping shell 21. At this time, a damping force is generated between the damping rod 22 and the damping shell 21, causing the buffer hinge 1 to close slowly. Figure 4 and Figure 5 As shown, the third connector 13 rotates away from the first connector 11 and the damping shell 21, causing the damping rod 22 to extend out of the damping shell 21. At this time, the damping shell 21 returns to its original position under the action of elastic force. The damping assembly 2 has a simple structure and is easy to install. It can realize the slow closing and automatic reset of the buffer hinge 1, which can reduce the collision of the buffer hinge 1 itself when it closes and extend the service life of the buffer hinge 1.

[0038] Second embodiment:

[0039] This embodiment discloses an opening and closing device equipped with the buffer hinge 1 described in the first embodiment.

[0040] like Figures 1-5 As shown, in this embodiment, the opening and closing device is a box with an openable door, such as a built-in refrigerator. The opening and closing device includes a box and a door. A fixed seat 3 is installed on the first surface of the box, and a hinge seat 4 is installed on the second surface of the door. The hinge seat 4 is positioned corresponding to the fixed seat 3. The fixed seat 3 and the hinge seat 4 are semi-enclosed frame structures with their openings facing each other. Specifically, the first end of the first connecting member 11 is hinged to the first end of the inner side of the fixed seat 3. The second end of the third connecting member 13 is hinged to the first end of the inner side of the hinge seat 4. The first end of the second connecting member 12 is hinged to the first end of the inner side of the fixed seat 3. The first end of the fourth connecting member 14 is hinged to the second end of the inner side of the hinge seat 4. The hinge seat 4 rotates to fold or open around the hinge point between the first connecting member 11 and the fixed seat 3.

[0041] In this embodiment, the fixed base 3, hinge base 4, first connecting member 11, second connecting member 12, third connecting member 13, and fourth connecting member 14 are hinged to form a six-bar linkage, thereby enabling the hinge base 4 to rotate and open and close relative to the fixed base 3. By adding an automatic closing damping effect to the buffer hinge 1, the impact when the opening and closing device closes can be reduced, noise can be reduced, and the internal components of the opening and closing device can be effectively protected, extending the service life of the opening and closing device.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A buffer hinge, characterized in that, The buffer hinge includes a first connecting member and a third connecting member hinged to the inner side of the first connecting member, wherein the first connecting member is a semi-enclosed frame structure with the opening facing upwards; the buffer hinge also includes a damping assembly, the damping assembly comprising: The damping shell is a hollow structure with an opening at the first end, and is slidably disposed on the bottom inner side of the first connector; A damping rod has a first end fixedly connected to the inner side of the first connector and a second end elastically connected to the hollow structure. The damping rod slides within the hollow structure and generates a damping force with the inner wall of the hollow structure. The third connector rotates closer to the first connector and presses against the damping shell, causing the damping rod to retract into the damping shell; the third connector rotates away from the first connector and the damping shell, causing the damping rod to extend out of the damping shell.

2. The buffer hinge according to claim 1, characterized in that, The buffer hinge includes: The first pin passes through the first connector and abuts against the first end of the damping rod; The second pin passes through the first connector and abuts against the upper end of the damping shell.

3. The buffer hinge according to claim 1, characterized in that: The second end of the damping shell has an inclined surface that slopes toward the first end.

4. The buffer hinge according to claim 3, characterized in that: A protrusion is provided at the lower end of the third connector corresponding to the inclined surface; When the third connector is rotated until the protrusion just contacts the inclined surface, the lower end of the protrusion and the inclined surface are in surface contact.

5. The buffer hinge according to claim 4, characterized in that: The lower corner of the protrusion is chamfered.

6. The buffer hinge according to claim 1, characterized in that: A sliding groove is formed on the bottom inner side of the first connector, and a slider is provided at the lower end of the damping shell, which is engaged in the sliding groove.

7. The buffer hinge according to any one of claims 1 to 6, characterized in that, The third connector is a semi-enclosed frame structure with an opening in the same direction as the first connector, and the buffer hinge further includes: The second connector has a second end that extends into the third connector and is hinged to the inside of the third connector, and its position corresponds to the upper end of the first connector. The fourth connector has its second end hinged to the second end inside the first connector.

8. An opening and closing device, characterized in that, The opening and closing device is equipped with a buffer hinge as described in claim 7. The device includes a housing and a door. A fixed seat is mounted on a first surface of the housing, and a hinge seat is mounted on a second surface of the door. The hinge seat is positioned corresponding to the fixed seat. The fixed seat and the hinge seat are semi-enclosed frame structures with openings facing each other. Specifically, the first end of the first connecting member is hinged to the first inner end of the fixed seat; the second end of the third connecting member is hinged to the first inner end of the hinge seat; the first end of the second connecting member is hinged to the first inner end of the fixed seat; the first end of the fourth connecting member is hinged to the second inner end of the hinge seat; and the hinge seat rotates to fold or open with the hinge point between the first connecting member and the fixed seat as a fixed point.

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