Large-angle buffering hinge
By setting a buffer device on the hinge cup and moving it synchronously with the hinge cup, the transmission distortion and space occupation problems of existing buffer hinges are solved, and a larger opening and closing angle and a better closing effect are achieved.
Patent Information
- Application Number
- CN202423220472.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The buffer in existing buffer hinges is located inside the hinge arm, which leads to distortion in motion trajectory transmission, large space occupation, unsatisfactory closing effect, and inability to achieve large-angle opening.
The buffer device is placed on the hinge cup so that it moves synchronously with the hinge cup. It is connected to the hinge arm through a linkage structure to avoid transmission distortion. The position of the torsion spring is moved back to reasonably set the lever arm and increase the opening and closing angle of the hinge.
It enables smooth hinge rotation and a wider opening and closing angle, improves the closing effect, reduces the space occupied by the hinge arm, and enhances the user experience.
Smart Images
Figure CN223838873U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware accessories, and in particular to a large-angle buffer hinge. Background Technology
[0002] Current buffer hinges typically house the buffer within the hinge arm, forming a four-bar linkage via a series of connectors. This four-bar linkage is then connected to the buffer. When the hinge closes under external force, the four-bar linkage triggers the buffer, causing it to stretch or compress the internal piston mechanism, resulting in linear motion. The piston, aided by hydraulic oil, achieves the buffering effect. However, this type of buffer structure suffers from distortion in the transmission of motion trajectory during the entire closing process due to the complex linkage mechanism used for conversion and connection. Furthermore, because the buffer is located within the hinge arm, it occupies a significant amount of internal space. Consequently, the installation positions of components such as the closing spring must accommodate the buffer, leading to an unreasonable lever arm formed by the forward-mounted closing spring. This results in an unsatisfactory closing effect, stuttering during closing, and an inability to achieve large-angle opening.
[0003] Based on the above, the existing hinge structure needs further improvement. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing hinge structures and provide a large-angle buffer hinge. The buffer device is set on the hinge cup, so that the movement of the buffer device and the hinge cup is synchronized, avoiding transmission distortion. At the same time, it reduces the occupation of the internal space of the hinge arm, allowing the installation position of the torsion spring to be moved back, forming a more reasonable lever arm setting, thereby improving the closing effect and achieving a larger opening and closing angle.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a large-angle buffer hinge, including a hinge cup, a buffer device, the buffer device being disposed on the hinge cup, and the buffer device extending outward with an abutting portion; a hinge arm, the hinge arm being connected to the hinge cup via a linkage structure, when the hinge cup retracts towards the hinge arm, the abutting portion abuts against the upper end face of the hinge arm and activates the buffer device; the linkage structure includes a first link, a second link, and a torsion spring, the hinge arm being provided with a first hinge point, a second hinge point, and a third hinge point, one end of the first link being hinged to the first hinge point, one end of the second link being hinged to the second hinge point, the torsion spring being disposed on the third hinge point via a connecting shaft, and one connecting end of the torsion spring abutting against the second link.
[0006] This invention, by placing the buffer device on the hinge cup, synchronizes the movement of the buffer device with the hinge cup, avoiding transmission distortion. Furthermore, since the buffer device does not occupy internal space of the hinge arm, the position of the torsion spring can be moved rearward, resulting in a more rational lever arm setting and allowing for a larger opening range for the first and second links. Compared with existing technologies, this invention's large-angle buffer hinge offers better closing performance and enables a wider opening and closing angle.
[0007] Preferably, the first hinge point, the second hinge point, and the third hinge point are arranged in a triangular pattern, with the second hinge point located between the first hinge point and the third hinge point, and the third hinge point located on the rear side.
[0008] Preferably, the line connecting the axes of the first hinge point and the third hinge point is set as an inclined line. The torsion spring of the existing buffer hinge is usually set on the first hinge point. Due to the limitations of the volume and thickness of the torsion spring, the first hinge point cannot be set higher, which limits the rotation angle of the first link. However, in this invention, the torsion spring is set on the third hinge point, so the first hinge point is not limited by the torsion spring. Setting it higher than the third hinge point allows the first link to rotate a larger range, thereby achieving a larger angle of opening and closing.
[0009] Preferably, the second connecting rod includes a first connecting end, a second connecting end, and a connecting arm. The first connecting end and the second connecting end are respectively disposed at both ends of the connecting arm. The connecting arm is bent to one side to form at least one bent portion. The first connecting end is used to hinge with the hinge cup, and the second connecting end is used to hinge with the second hinge point.
[0010] Since one end of the torsion spring abuts against the second link, and the first end is hinged to the hinge cup, the closing force generated by the torsion spring can be directly transmitted to the hinge cup through the second link, making the force transmission simple and direct, the hinge rotation smoother, and improving the user experience.
[0011] Preferably, the bent portion of the connecting arm is formed near the middle of the connecting arm, and its angle is 125° to 135°; the bent portion is used to enhance the strength of the part and avoid excessive stress causing the part to deform.
[0012] Preferably, the connecting arm further includes a second bend, which is formed on the side near the first connecting end and has an angle of 145° to 155°; the second bend is used to increase the rotation angle range of the first connecting end.
[0013] Preferably, the second connecting end is provided with an extension portion, which is used to restrict the torsion spring connecting end and prevent the torsion spring connecting end from sliding off the second connecting rod.
[0014] Preferably, the first connecting rod includes a third connecting end and a fourth connecting end. The third connecting end is hinged to the hinge cup via a positioning pin, and the fourth connecting end is hinged to the first hinge point. A third bend is provided between the third connecting end and the fourth connecting end.
[0015] Preferably, the third bending portion is provided with a limiting protrusion, which is used to limit the positioning pin and prevent the positioning pin from shifting.
[0016] Preferably, at least two locating pins are provided, and a clearance position is formed between the locating pins. The clearance position is located on the rotation trajectory of the second link. The clearance position can reduce the rotation restriction on the second link, so that the rotation range of the second link can be increased, thereby allowing the hinge to open and close at a larger angle. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the present invention in the open state.
[0018] Figure 2 This is another schematic diagram of the present invention in the open state.
[0019] Figure 3 This is an exploded view of the structure of this utility model.
[0020] Figure 4 This is a schematic diagram of the connecting rod structure of this utility model.
[0021] Figure 5 This is a schematic diagram of the structure of the second link of this utility model.
[0022] Figure 6 This is a schematic diagram of the structure of the first connecting rod of this utility model.
[0023] Figure 7 This is a schematic diagram of the connecting rod structure and hinge arm of this utility model.
[0024] Figure 8 This is a cross-sectional view of the present invention in its open state.
[0025] Figure 9 This is a schematic diagram of the present invention in the activated state of the buffer device.
[0026] Figure 10 This is a cross-sectional view of the present invention in the activated state of the buffer device.
[0027] Figure 11 This is a schematic diagram of the present invention in the closed state.
[0028] Figure 12 This is a cross-sectional view of the present invention in the closed state.
[0029] Label Explanation:
[0030] Large-angle buffer hinge 1, hinge cup 2, buffer device 3, abutment part 31, hinge arm 4, first hinge point 41, second hinge point 42, third hinge point 43, connecting rod structure 5, first connecting rod 51, third connecting end 511, fourth connecting end 512, third bending part 513, limiting protrusion 514, second connecting rod 52, first connecting end 521, second connecting end 522, connecting arm 523, bending part 5231, second bending part 5232, extension part 524, torsion spring 53, positioning pin 6, clearance position 61. Detailed Implementation
[0031] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "horizontal", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing 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.
[0032] See Figures 1 to 4 This embodiment discloses a large-angle buffer hinge 1, including a hinge cup 2; a buffer device 3, which is disposed on the hinge cup 2 and has an outwardly extending abutment portion 31; and a hinge arm 4, which is connected to the hinge cup 2 via a connecting rod structure 5. When the hinge cup 2 retracts towards the hinge arm 4, the abutment portion 31 abuts against the upper end face of the hinge arm 4 and activates the buffer device 3. The connecting rod structure 5 includes a first connecting rod 51, a second connecting rod 52, and a torsion spring 53. The hinge arm 4 is provided with a first hinge point 41, a second hinge point 42, and a third hinge point 43. One end of the first connecting rod 51 is hinged to the first hinge point 41, one end of the second connecting rod 52 is hinged to the second hinge point 42, and the torsion spring 53 is disposed on the third hinge point 43 via a connecting shaft, with one connecting end of the torsion spring 53 abutting against the second connecting rod 52. In this design, the hinge arm 4 is connected to the connecting rod structure 5 through three hinge points, which makes the lever arm setting more reasonable and the hinge opening and closing smoother.
[0033] See Figure 9 The first hinge point 41, the second hinge point 42, and the third hinge point 43 are arranged in a triangular pattern. The second hinge point 42 is located between the first hinge point 41 and the third hinge point 43, and the third hinge point 43 is located on the rear side. Since the third hinge point 43 is located on the rear side, the torsion spring 53 mounted on the third hinge point 43 is also located on the rear side, thereby reducing the restriction of the torsion spring 53 on the rotation range of the first connecting rod 51 and the second connecting rod 52, and increasing the hinge opening angle.
[0034] See Figure 9 The line connecting the axes of the first hinge point 41 and the third hinge point 43 is set as an inclined line. In this design, the first hinge point 41 is set higher than the third hinge point 43, allowing the first link 51 to rotate at a larger angle.
[0035] See Figure 2 and Figure 5 The second connecting rod 52 includes a first connecting end 521, a second connecting end 522, and a connecting arm 523. The first connecting end 521 and the second connecting end 522 are respectively disposed at both ends of the connecting arm 523. The connecting arm 523 is bent to one side to form at least a bent portion 5231. The first connecting end 521 is used to hinge with the hinge cup 2, and the second connecting end 522 is used to hinge with the second hinge point 42. In this design, the second connecting rod 52 directly connects the hinge cup 2 and the connecting end of the torsion spring 53, so that the closing force generated by the torsion spring is directly transmitted to the hinge cup 2. The force transmission is simple and direct, the hinge 1 rotates more smoothly, and the user experience is better.
[0036] See Figure 5 To avoid impact on the door panel and increase the strength of the second connecting rod 52, the bent portion 5231 of the connecting arm 523 is formed near the middle of the connecting arm 523, with an angle of 125° to 135°.
[0037] See Figure 5 To prevent the hinge cup 2 from being exposed during rotation, the connecting arm 523 also includes a second bending portion 5232, which is formed on the side near the first connecting end 521 and has an angle of 145° to 155°.
[0038] See Figure 5 To prevent the torsion spring 53 from slipping off, the second connecting end 522 is provided with an extension 524, which is used to limit the connecting end of the torsion spring 53.
[0039] See Figures 6 to 7 The first connecting rod 51 includes a third connecting end 511 and a fourth connecting end 512. The third connecting end 511 is hinged to the hinge cup 2 through a positioning pin 6, and the fourth connecting end 512 is hinged to the first hinge point 41. A third bending portion 513 is provided between the third connecting end 511 and the fourth connecting end 512.
[0040] See Figures 6 to 7 The third bending portion 513 is provided with a limiting protrusion 514, which is used to limit the positioning pin 6.
[0041] See Figure 7 The positioning pin 6 is provided in at least two, and the positioning pin 6 forms a clearance position 61 between them. The clearance position 61 is located on the rotation trajectory of the second connecting rod 52.
[0042] See Figure 7 Specifically, the positioning pin 6 is a U-shaped pin with unequal lengths on both sides. The first connecting rod 51 is disposed on the short side pin section, and the second connecting rod 52 is disposed on the long side pin section. The clearance position 61 is formed between the short side pin sections.
[0043] This invention, by placing the buffer device 3 on the hinge cup 2, synchronizes the movement of the buffer device 3 with the hinge cup 2, avoiding motion transmission distortion. Simultaneously, since the buffer device 3 does not occupy the internal space of the hinge arm 4, the position of the torsion spring 53 is moved rearward, resulting in a more reasonable lever arm setting. This also allows the first link 51 and the second link 52 to have a larger opening range. Compared with the prior art, the large-angle buffer hinge 1 of this invention has a better closing effect and can achieve a larger opening and closing angle.
[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A large-angle buffer hinge, characterized in that, include: Hinge cup (2); A buffer device (3) is provided on the hinge cup (2), and the buffer device (3) extends outward with an abutment part (31); The hinge arm (4) is connected to the hinge cup (2) via a connecting rod structure (5). When the hinge cup (2) retracts towards the hinge arm (4), the abutting part (31) abuts against the upper end face of the hinge arm (4) and activates the buffer device (3). The linkage structure (5) includes a first linkage (51), a second linkage (52), and a torsion spring (53). The hinge arm (4) is provided with a first hinge point (41), a second hinge point (42), and a third hinge point (43). One end of the first linkage (51) is hinged to the first hinge point (41), and one end of the second linkage (52) is hinged to the second hinge point (42). The torsion spring (53) is set on the third hinge point (43) through a connecting shaft, and one connecting end of the torsion spring (53) abuts against the second linkage (52).
2. The large-angle buffer hinge according to claim 1, characterized in that, The first hinge point (41), the second hinge point (42) and the third hinge point (43) are arranged in a triangular pattern. The second hinge point (42) is located between the first hinge point (41) and the third hinge point (43), and the third hinge point (43) is located on the rear side.
3. A large-angle buffer hinge according to claim 1, characterized in that, The axis connecting the first hinge point (41) and the third hinge point (43) is set as an inclined line.
4. A large-angle buffer hinge according to claim 1, characterized in that, The second connecting rod (52) includes a first connecting end (521), a second connecting end (522), and a connecting arm (523). The first connecting end (521) and the second connecting end (522) are respectively disposed at both ends of the connecting arm (523). The connecting arm (523) is bent to one side to form at least a bent portion (5231). The first connecting end (521) is used to hinge with the hinge cup (2), and the second connecting end (522) is used to hinge with the second hinge point (42).
5. A large-angle buffer hinge according to claim 4, characterized in that, The bent portion (5231) of the connecting arm (523) is formed near the middle of the connecting arm (523) at an angle of 125° to 135°.
6. A large-angle buffer hinge according to claim 5, characterized in that, The connecting arm (523) further includes a second bend (5232), which is formed on the side near the first connecting end (521) and has an angle of 145° to 155°.
7. A large-angle buffer hinge according to claim 4, characterized in that, The second connecting end (522) is provided with an extension (524), which is used to limit the connecting end of the torsion spring (53).
8. A large-angle buffer hinge according to claim 1, characterized in that, The first connecting rod (51) includes a third connecting end (511) and a fourth connecting end (512). The third connecting end (511) is hinged to the hinge cup (2) by a positioning pin (6), and the fourth connecting end (512) is hinged to the first hinge point (41). A third bend (513) is provided between the third connecting end (511) and the fourth connecting end (512).
9. A large-angle buffer hinge according to claim 8, characterized in that, The third bend (513) is provided with a limiting protrusion (514), which is used to limit the positioning pin (6).
10. A large-angle buffer hinge according to claim 8, characterized in that, At least two positioning pins (6) are provided, and a clearance position (61) is formed between the positioning pins (6), which is located on the rotation trajectory of the second connecting rod (52).