A torsion-adjustable hinge
By introducing a torque adjustment component into the hinge to change the angle of the torsion arm, the hinge torque can be adjusted, solving the problems of torque decay in furniture hinges and potential damage during replacement. It is suitable for door panels of different specifications and improves the furniture user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG JUNSHI PRECISION MANUFACTURING CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
AI Technical Summary
Furniture hinges lose torque over time, making it difficult to find original hinges when replacing them, and the replacement process may damage the furniture or result in insecure installation.
Design a torque-adjustable hinge by adding a torque adjustment element at the contact point between the torsion arm of the torsion spring and the hinge, thereby changing the angle between the two torsion arms to adjust the torque. The hinge includes a hinge cup, an outer connecting arm, an inner connecting arm, a hinge seat, a torsion spring, and a torque adjustment element. The torque adjustment element drives the first torsion arm to rotate, thereby changing the torque of the torsion spring.
It solves the problem of hinge torque decay, avoids secondary damage to furniture caused by hinge replacement, and is applicable to door panels of different sizes, making it easy to operate.
Smart Images
Figure CN224532486U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hinge technology, specifically relating to a torque-adjustable hinge. Background Technology
[0002] Hinges are a widely used type of hardware in the furniture industry. As the usage time continues, the torque of the hinge will gradually decrease, affecting the user experience of the furniture.
[0003] Replacing the hinges with new ones presents the following problems: First, there are many types of hinges on the market, and products are updated and iterated quickly. When the torque of the hinges on the furniture weakens, it is difficult to find original hinges for replacement. If a different model of hinge is installed, it is necessary to re-groove and screw it in, causing secondary damage to the furniture. Second, if original hinges are used for replacement, although no new grooving is required, using the original holes for installation and fixation can easily lead to a decrease in nail holding power and insecure installation.
[0004] Therefore, a hinge with adjustable torque is needed to solve or avoid the above problems in order to improve the user experience of furniture. Utility Model Content
[0005] The purpose of this utility model is to disclose a torque-adjustable hinge to solve the problem of torque attenuation in furniture hinges and avoid secondary damage to furniture caused by hinge replacement; in addition, its torque can be adjusted to adapt to the torque requirements of different door panels.
[0006] To achieve the above objectives, this utility model discloses a torque-adjustable hinge, comprising: a hinge cup, an outer connecting arm, an inner connecting arm, a hinge seat, a torsion spring, and a torque adjusting component; wherein, the first end of the outer connecting arm is hinged to the hinge seat via a first hinge shaft, and the second end of the outer connecting arm is hinged to the hinge cup via a second hinge shaft; the first end of the inner connecting arm is hinged to the hinge seat via a third hinge shaft, and the second end of the inner connecting arm is hinged to the hinge cup via a fourth hinge shaft; the torque adjusting component is disposed on the hinge seat, and the torsion spring includes a helical portion, a first torsion arm, and a second torsion arm, the helical portion being sleeved on the first hinge shaft, the first torsion arm being connected to the torque adjusting component, and the second torsion arm being connected to either the outer connecting arm or the inner connecting arm; and, when the torque adjusting component is driven to move, the torque adjusting component drives the first torsion arm to rotate to change the torque of the torsion spring.
[0007] As an optional implementation, the torque adjusting member is rotatably mounted on the hinge seat. The axial direction of the first hinge shaft is defined as the first direction, and the rotation axis of the torque adjusting member is defined as the second direction. The first direction is perpendicular to the second direction. An uneven abutment surface is provided at one end of the torque adjusting member along the second direction. The abutment surface is used to abut against the first torsion arm. The torque adjusting member is rotated so that the first torsion arm abuts against different uneven positions of the abutment surface, thereby changing the rotation angle of the first torsion arm.
[0008] As an optional implementation, the contact surface includes a first plane, a second plane, and two transition slopes arranged in a ring, wherein the first plane and the second plane have different heights, and a transition slope connects the first plane and the second plane.
[0009] As an optional implementation, mating grooves are provided at different concave and convex positions of the abutment surface, and a portion of the first torsion arm is fitted into any of the mating grooves.
[0010] As an optional implementation, the end section of the first torsion arm is provided with a curved portion, and the mating groove is arc-shaped, with the curvature of the curved portion matching the concave curvature of the mating groove.
[0011] As an optional implementation, on a projection plane perpendicular to the second direction, the projection of the contact point trajectory between the curved portion and the abutting surface is circular, and the projection of the first torsion arm is tangent to the circular projection of the contact point trajectory.
[0012] As an optional implementation, the torque adjusting component includes an integrally formed adjusting column and a mating platform. The mating platform is connected to one end of the adjusting column, and the abutment surface is located on the side of the mating platform away from the adjusting column. The hinge seat is provided with a through hole, the diameter of which is greater than or equal to the diameter of the adjusting column and smaller than the diameter of the mating platform. The adjusting column passes through the through hole, and the first torsion arm elastically abuts against the mating platform and presses the mating platform against the inner wall of the hinge seat.
[0013] As an optional implementation, the adjusting column is provided with a straight adjusting groove, a cross adjusting groove, or an internal hexagonal adjusting groove.
[0014] As an optional implementation, the inner connecting arm is also provided with a pin, which is offset from the third hinge axis and the axial direction of the pin is parallel to the axial direction of the third hinge axis. The second torsion arm elastically abuts against the periphery of the pin.
[0015] As an alternative implementation, the pin is cylindrical, and the circumferential sidewall of the second torsion arm abuts against the circumferential sidewall of the pin.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model discloses a torque-adjustable hinge. By adding a torque adjustment component between the torsion arm of the torsion spring and the hinge's contact point, the angle between the two torsion arms is changed, thereby altering the torque. This not only solves the problem of torque attenuation in furniture hinges but also avoids secondary damage to furniture caused by hinge replacement. The solution involves torque adjustment of the hinge, which is more convenient than traditional hinge replacement. Furthermore, this torque-adjustable hinge can be adapted to different door panel sizes by adjusting its torque, thus broadening its application. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a display image of the overall appearance of the adjustable hinge.
[0020] Figure 2 This is an exploded view of the adjustable hinge.
[0021] Figure 3 This is a cross-sectional view of the adjustable hinge.
[0022] Figure 4 This is an exploded view of the components related to the torsion spring assembly.
[0023] Figure 5 This is a view showing the overall appearance of the torque adjustment component.
[0024] Figure 6 This is a bottom view showing the relationship between the torque adjustment component and the torsion spring.
[0025] Explanation of key figure labels:
[0026] 1. Hinge cup; 2. Outer connecting arm; 21. First hinge shaft; 22. Second hinge shaft; 3. Inner connecting arm; 31. Third hinge shaft; 32. Fourth hinge shaft; 33. Pin; 4. Hinge seat; 41. Through hole; 5. Torsion spring; 50. Screw section; 51. First torsion arm; 510. Bending section; 52. Second torsion arm; 6. Torque adjustment component; 61. Adjusting column; 62. Mating platform; 620. Abutment surface; 621. First plane; 622. Second plane; 628. Mating groove; 629. Transition slope; 63. Contact point trajectory. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0029] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0031] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0032] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0033] Please see Figure 1 and Figure 2 As shown, this application embodiment provides a torque-adjustable hinge, including a hinge cup 1, an outer connecting arm 2, an inner connecting arm 3, a hinge seat 4, a torsion spring 5, and a torque adjusting component 6.
[0034] The first end of the outer connecting arm 2 is hinged to the hinge seat 4 via the first hinge shaft 21, and the second end of the outer connecting arm 2 is hinged to the hinge cup 1 via the second hinge shaft 22; the first end of the inner connecting arm 3 is hinged to the hinge seat 4 via the third hinge shaft 31, and the second end of the inner connecting arm 3 is hinged to the hinge cup 1 via the fourth hinge shaft 32.
[0035] The torque adjusting component 6 is mounted on the hinge seat 4. The torsion spring 5 includes a coil portion 50, a first torsion arm 51, and a second torsion arm 52. The coil portion 50 is sleeved on the first hinge shaft 21. The first torsion arm 51 is connected to the torque adjusting component 6. The second torsion arm 52 is connected to the outer connecting arm 2 or the inner connecting arm 3. When the torque adjusting component 6 is driven to move, the torque adjusting component 6 drives the first torsion arm 51 to rotate to change the torque of the torsion spring 5.
[0036] When hinge torque decays or in other scenarios requiring a change in hinge torque, the hinge torque can be adjusted by adjusting the torque adjustment component 6, eliminating the need to replace the hinge, making it quick and convenient. On the other hand, door panels with significantly different specifications require different hinge torques. For example, heavier and larger door panels require greater hinge torque, while lighter and smaller door panels require less. The torque-adjustable hinge of this invention can be adapted to different door panel specifications by adjusting its torque, thus having a wider range of applications.
[0037] See Figure 2 and Figure 4 The coiled portion 50 of the torsion spring 5 is fitted onto the first hinge shaft 21. The first torsion arm 51 elastically abuts against the mating platform 62, and the second torsion arm 52 elastically abuts against the pin 33. These three mating points restrict the angle between the first torsion arm 51 and the second torsion arm 52 to between the torque adjusting member 6 and the pin 33. However, when unrestricted, the angle between the first torsion arm 51 and the second torsion arm 52 is greater than the angle when restricted. Therefore, the elastic force of the torsion spring 5 originates from the elastic potential energy generated by the difference between the two angles. In this embodiment, the torque of the hinge also originates from this elastic potential energy generated by the angle difference. Therefore, by adjusting the angle, the torque of the hinge can be adjusted.
[0038] See Figure 2 , Figure 3 and Figure 5 The hinge seat 4 has a through hole 41. The torque adjusting component 6 includes an adjusting column 61 and a mating platform 62. The diameter of the adjusting column 61 is smaller than the diameter of the through hole 41, and the diameter of the mating platform 62 is larger than the diameter of the through hole 41. The adjusting column 61 passes through the through hole 41 into the hinge seat 4. Because the diameter of the mating platform 62 is larger than the diameter of the through hole 41, it passively abuts against the inner wall of the hinge seat 4. At the same time, the elastic force direction of the first torsion arm 51 points towards the through hole 41. The mating platform 62 is located between the through hole 41 and the first torsion arm 51. It can be regarded as the first torsion arm 51 elastically clamping the mating platform 62 between the first torsion arm 51 and the through hole 41. This arrangement can ensure that the mating platform 62 is always in the preset position and that the torque adjusting component 6 can rotate without loosening when adjustment is required.
[0039] See Figure 3 and Figure 5In this embodiment, the mating platform 62 is provided with a first plane 621, a second plane 622 and two transition slopes 629 arranged in a ring. The first plane 621 and the second plane 622 are connected by the two transition slopes 629. Both the first plane 621 and the second plane 622 are provided with mating grooves 628. The end of the first torsion arm 51 is provided with a bent portion 510, which falls into the mating groove 628 and abuts against the mating groove 628. Each mating groove 628 is relative to the mating platform 62 and the hinge seat 4. When the distance between the contact surfaces 620 of the wall is different, the adjusting column 61 is rotated during torque adjustment, and the mating table 62 rotates accordingly. The bent part 510 disengages from the mating groove 628, and the mating table 62 continues to rotate until the bent part 510 falls into the next mating groove 628. At this time, the distance between the bent part 510 and the inner wall of the hinge seat 4 changes, which changes the rotation angle of the first torsion arm 51, and consequently changes the initial included angle between the first torsion arm 51 and the second torsion arm 52. Therefore, the torque of the hinge changes, and the torque adjustment of one level is completed.
[0040] It is conceivable that more uneven contact surfaces 620 can be provided on the mating platform 62 and equipped with mating grooves 628 of different heights to achieve adjustment of different torque levels.
[0041] It should be noted that the curvature of the curved portion 510 is the same as that of the mating groove 628. This setting has three advantages: First, during the adjustment process, because the curvature of the curved portion 510 is the same as that of the mating groove 628, the curved portion 510 slides into and out of the mating groove 628 more smoothly. Second, at the end of the adjustment process, the curvature of the curved portion 510 is the same as that of the mating groove 628, so that when the curved portion 510 first enters the mating groove 628, it automatically slides into the preset position under its own elasticity. In terms of adjustment feel, when adjusting to the vicinity of the next gear, there is a "sucking" sensation as it automatically engages with the nearby gear. Third, because the curvature of the curved portion 510 is the same as that of the mating groove 628, in the mating state, the mating table 62 has no extra space for clockwise or counterclockwise rotation on its rotation path. In terms of adjustment feel, the gear shift is clear and accurate, without any play.
[0042] See Figure 6 During the adjustment process, the bent portion 510 and the abutment surface 620 remain in elastic contact. The projection of the contact point trajectory 63 on the projection plane perpendicular to the second direction is circular. In this embodiment, the projection of the first torsion arm 51 on the projection plane perpendicular to the second direction is tangent to the circular projection of the contact point trajectory 63. The purpose of this arrangement is to prevent the force applied to the first torsion arm 51 by the abutment surface 620 from causing the first torsion arm 51 to sway left and right when the torque adjusting member 6 rotates, and to ensure that the bent portion 510 and the mating groove 628 are accurately positioned in the preset position when the bent portion 510 falls into the mating groove 628.
[0043] See Figure 3 and Figure 4 A cylindrical pin 33 is inserted through the inner connecting arm 3, and the axial direction of the pin 33 is parallel to the axial direction of the third hinge shaft 31. The second torsion arm 52 elastically abuts against the periphery of the pin 33. As the hinge opens and closes, the mating point between the second torsion arm 52 and the pin 33 changes, but the two are always in point contact, effectively reducing the friction between them.
[0044] See Figure 5 or Figure 6 The adjusting column 61 is provided with a flat adjusting groove, a cross adjusting groove, or an internal hexagon adjusting groove, which facilitates adjustment with a commonly used screwdriver and torque adjusting component 6.
[0045] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A torque-adjustable hinge, characterized in that, include: Hinge cup (1), outer connecting arm (2), inner connecting arm (3), hinge seat (4), torsion spring (5), torque adjustment component (6); The first end of the outer connecting arm (2) is hinged to the hinge seat (4) via a first hinge shaft (21), and the second end of the outer connecting arm (2) is hinged to the hinge cup (1) via a second hinge shaft (22); the first end of the inner connecting arm (3) is hinged to the hinge seat (4) via a third hinge shaft (31), and the second end of the inner connecting arm (3) is hinged to the hinge cup (1) via a fourth hinge shaft (32); The torque adjusting member (6) is disposed on the hinge seat (4). The torsion spring (5) includes a coil portion (50), a first torsion arm (51), and a second torsion arm (52). The coil portion (50) is sleeved on the first hinge shaft (21). The first torsion arm (51) is connected to the torque adjusting member (6). The second torsion arm (52) is connected to the outer connecting arm (2) or the inner connecting arm (3). When the torque adjusting member (6) is driven to move, the torque adjusting member (6) drives the first torsion arm (51) to rotate to change the torque of the torsion spring (5).
2. The torque-adjustable hinge according to claim 1, characterized in that, The torque adjusting member (6) is rotatably disposed on the hinge seat (4). The axial direction of the first hinge shaft (21) is defined as the first direction, and the rotation axis of the torque adjusting member (6) is defined as the second direction. The first direction is perpendicular to the second direction. An uneven abutment surface (620) is provided at one end of the torque adjusting member (6) along the second direction. The abutment surface (620) is used to abut against the first torsion arm (51). The torque adjusting member (6) is rotated so that the first torsion arm (51) abuts against different uneven positions of the abutment surface (620), thereby changing the rotation angle of the first torsion arm (51).
3. The torque-adjustable hinge according to claim 2, characterized in that, The contact surface (620) includes a first plane (621), a second plane (622), and two transition slopes (629) arranged in a ring. The first plane (621) and the second plane (622) have different heights, and the transition slopes (629) connect the first plane (621) and the second plane (622).
4. The torque-adjustable hinge according to claim 2, characterized in that, The abutment surface (620) is provided with mating grooves (628) at different concave and convex positions, and a part of the first torsion arm (51) is fitted into any of the mating grooves (628).
5. The torque-adjustable hinge according to claim 4, characterized in that, The first torsion arm (51) has a curved part (510) at its end, and the mating groove (628) is arc-shaped. The curvature of the curved part (510) matches the concave curvature of the mating groove (628).
6. The adjusting column of the torque-adjustable hinge according to claim 5, characterized in that, On the projection plane perpendicular to the second direction, the projection of the contact point trajectory (63) of the curved portion (510) and the abutting surface (620) is circular, and the projection of the first torsion arm (51) is tangent to the circular projection of the contact point trajectory (63).
7. The torque-adjustable hinge according to any one of claims 2 to 6, characterized in that, The torque adjusting component (6) includes an integrally formed adjusting column (61) and a mating platform (62). The mating platform (62) is connected to one end of the adjusting column (61). The abutting surface (620) is located on the side of the mating platform (62) away from the adjusting column (61). The hinge seat (4) is provided with a through hole (41). The diameter of the through hole (41) is greater than or equal to the diameter of the adjusting column (61). The diameter of the through hole (41) is smaller than the diameter of the mating platform (62). The adjusting column (61) passes through the through hole (41). The first torsion arm (51) elastically abuts against the mating platform (62) and presses the mating platform (62) against the inner wall of the hinge seat (4).
8. The torque-adjustable hinge according to claim 7, characterized in that, The adjusting column (61) is provided with a straight adjusting groove, a cross adjusting groove, or an internal hexagonal adjusting groove.
9. The torque-adjustable hinge according to any one of claims 1 to 6, characterized in that, The inner connecting arm (3) is also provided with a pin (33), the pin (33) is offset from the third hinge axis (31), and the axial direction of the pin (33) is parallel to the axial direction of the third hinge axis (31). The second torsion arm (52) elastically abuts against the periphery of the pin (33).
10. The torque-adjustable hinge according to claim 9, characterized in that, The pin (33) is a cylinder, and the circumferential sidewall of the second torsion arm (52) abuts against the circumferential sidewall of the pin (33).