A hinge limiting structure and a hinge
By introducing a multi-stage friction design that involves friction components in contact with the hinge arm, the problem of the hinge not being able to stop during opening is solved, enabling the hinge to stay at any angle and improving its flexibility and practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIEYANG RONGJIA HARDWARE & PLASTIC CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-02
AI Technical Summary
Existing hinges cannot stop at any angle midway during the opening process, which greatly limits their use and lacks flexibility.
A hinge limiting structure was designed. By installing a friction element on the hinge arm, the friction element provides multi-stage friction force through contact with the hinge arm, enabling the hinge arm to stay at any angle during rotation.
This design allows the hinge to remain at any angle during the opening process, increasing its flexibility and practicality, and making it suitable for more application scenarios.
Smart Images
Figure CN224314791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hinge technology, specifically to a hinge limiting structure and a hinge. Background Technology
[0002] Hinges, as a common type of hardware, are mechanical devices used to connect two objects and allow them to rotate relative to each other. They consist of a hinge cup, hinge body, hinge arm, and hinge seat, and are commonly used in places where frequent opening and closing is required, such as between cabinets and cabinet doors.
[0003] Hinges are classified into damping hinges and ordinary hinges based on their internal structure. In current technology, regardless of the type of hinge used, they all rely on torsion springs for power and typically only have two states: open and closed. They cannot stop during the opening process, nor can they keep the cabinet door stationary at any angle midway. This results in significant limitations in use and a lack of flexibility, which urgently needs improvement. Utility Model Content
[0004] In view of the deficiencies in the prior art, this utility model provides a hinge limiting structure and a hinge to solve the problem that the hinge cannot stop during the opening process in the prior art.
[0005] The present invention provides a hinge limiting structure, including a first hinge arm and a second hinge arm;
[0006] And a friction element mounted on the first hinge arm, the friction element being used to make frictional contact with the pivot of the first hinge arm and / or the second hinge arm during the rotation of the first hinge arm and the second hinge arm.
[0007] As can be seen from the above technical solution, when the first hinge arm and the second hinge arm rotate in this utility model, the friction element makes frictional contact with the rotating shaft of the first hinge arm or the second hinge arm, increasing the frictional force during rotation, so that the first hinge arm and the second hinge arm can stay at any angle during rotation, making the application scenarios wider and the practicality higher.
[0008] Furthermore, a first rotating groove is provided on one side of the friction member to rotate in contact with the outer wall of the pivot of the first hinge arm.
[0009] The beneficial effect of adopting the above-mentioned further solution is that the friction element and the first hinge arm always remain in contact, providing the first stage of frictional force.
[0010] Furthermore, the friction member is fixedly provided with a protrusion on the side facing the second hinge arm, and a second rotating groove is provided on the side wall of the protrusion to rotate and contact the outer peripheral wall of the end of the second hinge arm.
[0011] The beneficial effect of adopting the above-mentioned further solution is that after the second hinge arm rotates to a certain extent, the second rotating groove contacts the second hinge arm, providing a second stage of frictional force on the basis of the first stage, thereby increasing the frictional effect.
[0012] Furthermore, the bottom of the protrusion facing the second hinge arm is provided with a transition arc.
[0013] The beneficial effect of adopting the above-mentioned further solution is that when the second hinge arm rotates, the transition arc allows the protrusion to pass over the second hinge arm better, avoiding jamming.
[0014] Furthermore, the second hinge arm is provided with an arc-shaped transition surface and a clearance arc surface on the side facing the transition arc.
[0015] The beneficial effect of adopting the above-mentioned further solution is that the arc transition surface rubs against the transition arc, allowing the protrusion to better pass over the second hinge arm, and providing transition friction between the first stage friction force and the second stage friction force;
[0016] The avoidance arc surface is used to avoid friction components when the second hinge arm rotates.
[0017] Furthermore, the friction element has an avoidance notch on the side facing the arc-shaped transition surface.
[0018] The beneficial effect of adopting the above-mentioned further solution is that the avoidance notch is used for the friction element to avoid the second hinge arm when the second hinge arm rotates.
[0019] Furthermore, a snap-fit groove is provided on the first hinge arm, and a snap-fit block is fixedly provided on the friction member, with the snap-fit block fixed in the snap-fit groove.
[0020] The advantages of adopting the above-mentioned further solution are: the snap-fit block and snap-fit slot are interference fits, the structure is simple, and it is easy to disassemble and replace.
[0021] A hinge includes the hinge limiting structure described above, and also includes a hinge cup and a hinge body. One end of a first hinge arm is rotatably connected to the hinge cup via a first pivot, and the other end is rotatably connected to the hinge body via a second pivot. A torsion spring is sleeved on the second pivot.
[0022] The first rotating shaft makes rotational contact with the first rotating groove.
[0023] The beneficial effects of adopting the above scheme are: during the opening and closing process of the hinge cup and hinge body, the friction element keeps in continuous contact with the first rotating shaft, providing the first stage of frictional force. After a certain angle, the friction element contacts the second hinge arm, providing the second stage of frictional force. The two stages of frictional force allow the hinge cup to stay at any angle, increasing its practicality.
[0024] Furthermore, a damper is provided inside the hinge body, and the moving end of the damper points towards the hinge cup;
[0025] One end of the second hinge arm is rotatably connected to the hinge cup via a third pivot, and the other end is rotatably connected to the hinge body via a fourth pivot. The second pivot groove is rotatably in contact with the outer wall of the end of the second hinge arm located inside the hinge cup. A connecting member is hinged to one end of the second hinge arm located inside the hinge body. The end of the connecting member away from the second hinge arm is hinged to the swing member. The middle part of the swing member is rotatably installed in the hinge body via a fifth pivot. The end of the swing member away from the connecting member is hinged to the moving end of the damper.
[0026] The beneficial effect of adopting the above-mentioned further scheme is that: external force pushes the hinge cup, the hinge cup transmits kinetic energy to the damper, and the damper retracts to buffer the hinge cup, reducing noise.
[0027] Furthermore, a hinge seat is fixedly provided on the hinge body.
[0028] The advantage of adopting the above-mentioned further solution is that it facilitates the fixed installation of the hinge. Attached Figure Description
[0029] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0030] Figure 1 This is a schematic diagram of the first hinge arm and the second hinge arm of this utility model;
[0031] Figure 2 This is a schematic diagram of the friction component of this utility model;
[0032] Figure 3 This is a schematic diagram of the clearance notch of this utility model;
[0033] Figure 4 This is a schematic diagram showing the relative position of the hinge folding clearance notch and the second hinge arm of this utility model.
[0034] Figure 5 This is a schematic diagram of the hinge cup folding of this utility model;
[0035] Figure 6 This is a schematic diagram of the hinge cup opening process of this utility model;
[0036] Figure 7 This is a schematic diagram of the hinge cup of this utility model when opened;
[0037] Figure 8 This is a schematic diagram of the hinge of this utility model;
[0038] Figure 9 This is a schematic diagram of the hinge folding of this utility model.
[0039] Figure label:
[0040] 1. First hinge arm; 2. Second hinge arm; 3. Friction component; 4. First rotating groove; 5. Protrusion; 6. Second rotating groove; 7. Transition arc; 8. Arc-shaped transition surface; 9. Avoidance notch; 10. Snap-fit block; 11. Snap-fit groove; 12. Hinge cup; 13. Hinge body; 14. First pivot; 15. Second pivot; 16. Torsion spring; 17. Damper; 18. Third pivot; 19. Fourth pivot; 20. Connector; 21. Swing component; 22. Fifth pivot; 23. Hinge seat; 24. Avoidance arc surface. Detailed Implementation
[0041] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0042] Example 1
[0043] like Figures 1 to 4 As shown, a hinge limiting structure includes a first hinge arm 1 and a second hinge arm 2.
[0044] And a friction element 3 installed on the first hinge arm 1, the friction element 3 being used to make frictional contact with the pivot of the first hinge arm 1 and / or the second hinge arm 2 during the rotation of the first hinge arm 1 and the second hinge arm 2.
[0045] In this embodiment, the first hinge arm 1 and the second hinge arm 2 can rotate respectively. The friction element 3 always keeps in contact with the rotation axis of the first hinge arm 1, which increases the friction force when the first hinge arm 1 rotates, provides the friction force in the first stage, and allows the first hinge arm 1 to stop during rotation.
[0046] After rotating to a certain extent, the friction component 3 comes into frictional contact with the second hinge arm 2, providing a second stage of frictional force on the basis of the first stage frictional force, increasing the frictional effect, so that the first hinge arm 1 and the second hinge arm 2 can stay at any angle during the rotation, making the application scenarios wider and the practicality higher.
[0047] Example 2
[0048] like Figures 1 to 4 As shown, preferably, based on embodiment 1, the friction member 3 has a first rotating groove 4 on one side that rotates in contact with the outer wall of the rotating shaft of the first hinge arm 1.
[0049] like Figures 1 to 4As shown, the friction member 3 is fixedly provided with a protrusion 5 on the side facing the second hinge arm 2, and a second rotating groove 6 is provided on the side wall of the protrusion 5 to rotate and contact the outer peripheral wall of the end of the second hinge arm 2.
[0050] like Figures 1 to 4 As shown, the bottom of the protrusion 5 facing the second hinge arm 2 is provided with a transition arc 7.
[0051] like Figures 1 to 4 As shown, the second hinge arm 2 is provided with an arc-shaped transition surface 8 and an avoidance arc surface 24 on the side facing the transition arc 7.
[0052] like Figures 1 to 4 As shown, the friction element 3 has an avoidance notch 9 on the side facing the arc-shaped transition surface 8.
[0053] like Figures 1 to 4 As shown, the first hinge arm 1 has a snap-fit groove 11, and the friction member 3 has a snap-fit block 10 fixedly installed in the snap-fit groove 11.
[0054] In this embodiment, the friction element 3 is fixedly installed on the first hinge arm 1 by the snap-fit block 10 and always rotates with the first hinge arm 1. The first rotation groove 4 always keeps in contact with the rotation axis of the first hinge arm 1 to provide frictional force in the first stage, so that the first hinge arm 1 can stop during rotation.
[0055] In the initial state, such as Figure 4 As shown, when the first hinge arm 1 and the second hinge arm 2 are in the folded state, the friction element 3 does not contact the second hinge arm 2;
[0056] The second hinge arm 2 begins to rotate, avoiding the notch 9 and the arc surface 24 to avoid each other, preventing the friction component 3 from getting stuck during rotation;
[0057] After the second hinge arm 2 rotates to a certain extent, the protrusion 5 comes into frictional contact with the arc-shaped transition surface 8, providing frictional force for the transition stage based on the first stage. At this time, the second hinge arm 2 can stop at any angle during the contact between the protrusion 5 and the arc-shaped transition surface 8.
[0058] The second hinge arm 2 continues to rotate, and the protrusion 5 of the friction element 3 disengages from the arc transition surface 8. The outer peripheral wall of the end of the second hinge arm 2 is circular. The second rotation groove 6 of the friction element 3 contacts the outer peripheral wall of the end of the second hinge arm 2, providing the second stage friction force on the basis of the first stage, increasing the friction effect. At this time, the second hinge arm 2 can stop at any angle during the contact between the second rotation groove 6 and the outer peripheral wall of the end of the second hinge arm 2.
[0059] Example 3
[0060] like Figures 5 to 9As shown, preferably, based on embodiments 1-2, a hinge includes the hinge limiting structure described above, and also includes a hinge cup 12 and a hinge body 13. One end of the first hinge arm 1 is rotatably connected to the hinge cup 12 through a first rotating shaft 14, and the other end is rotatably connected to the hinge body 13 through a second rotating shaft 15. A torsion spring 16 is sleeved on the second rotating shaft 15.
[0061] The first rotating shaft 14 is in rotational contact with the first rotating groove 4.
[0062] like Figures 5 to 9 As shown, a damper 17 is provided inside the hinge 13, and the moving end of the damper 17 points towards the hinge cup 12.
[0063] One end of the second hinge arm 2 is rotatably connected to the hinge cup 12 via the third rotating shaft 18, and the other end is rotatably connected to the hinge body 13 via the fourth rotating shaft 19. The second rotating groove 6 is rotatably in contact with the outer wall of the end of the second hinge arm 2 located inside the hinge cup 12. A connecting member 20 is hinged to one end of the second hinge arm 2 located inside the hinge body 13. The end of the connecting member 20 away from the second hinge arm 2 is hinged to the swing member 21. The middle part of the swing member 21 is rotatably installed inside the hinge body 13 via the fifth rotating shaft 22. The end of the swing member 21 away from the connecting member 20 is hinged to the moving end of the damper 17.
[0064] like Figures 5 to 9 As shown, a hinge seat 23 is fixedly provided on the hinge body 13.
[0065] In this embodiment, the hinge cup 12 is usually installed on the inside of the cabinet door, and the hinge body 13 is installed on the inside of the cabinet. The hinge cup 12 can be rotated and folded relative to the hinge body 13. The two sides of the first hinge arm 1 in the width direction are bent to form a groove. The second hinge arm 2 is located inside the first hinge arm 1 and its width is smaller than that of the first hinge arm 1. When folded and stored, the first hinge arm 1 and the second hinge arm 2 are both stored in the recess of the hinge cup 12.
[0066] In the initial state, such as Figure 5 As shown, the hinge cup 12 is in a folded state. Since the friction element 3 is fixed on the first hinge arm 1, the first rotating groove 4 always keeps in contact with the rotating shaft of the first hinge arm 1, providing the first stage friction force so that the first hinge arm 1 can stop during rotation, but the friction element 3 does not contact the second hinge arm 2.
[0067] like Figure 6 As shown, after the hinge cup 12 unfolds to a certain extent, the end of the second hinge arm 2 gradually moves closer to the first hinge arm 1, avoiding the notch 9 and the avoidance arc surface 24 to avoid each other, preventing the friction component 3 from getting stuck during rotation.
[0068] After the hinge cup 12 continues to unfold to a certain extent, the protrusion 5 comes into frictional contact with the arc transition surface 8, providing frictional force during the transition phase. At this time, the second hinge arm 2 can stop at any angle during the contact between the protrusion 5 and the arc transition surface 8.
[0069] like Figure 7 As shown, after the hinge cup 12 is fully opened, the protrusion 5 of the friction member 3 disengages from the arc transition surface 8, and the second rotating groove 6 of the friction member 3 remains in contact with the outer peripheral wall of the end of the second hinge arm 2, providing the second stage of friction force. At this time, the second hinge arm 2 can stop at any angle during the contact between the second rotating groove 6 and the outer peripheral wall of the end of the second hinge arm 2.
[0070] During the opening and closing of the hinge cup 12 and hinge body 13, the friction element 3 maintains continuous contact with the first rotating shaft 14, providing the first stage of friction. After a certain angle, the friction element 3 contacts the second hinge arm 2, providing the second stage of friction. The two stages of friction allow the hinge cup 12 to remain at any angle, increasing its practicality.
[0071] In addition, hinge 23 is used to fix hinge 13 to the cabinet.
[0072] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A hinge limiting structure, characterized in that, Includes a first hinge arm (1) and a second hinge arm (2); And a friction element (3) mounted on the first hinge arm (1), the friction element (3) being used to make frictional contact with the pivot of the first hinge arm (1) and / or the second hinge arm (2) during the rotation of the first hinge arm (1) and the second hinge arm (2).
2. The hinge limiting structure according to claim 1, characterized in that, The friction element (3) has a first rotating groove (4) on one side that rotates in contact with the outer wall of the pivot of the first hinge arm (1).
3. The hinge limiting structure according to claim 2, characterized in that, The friction element (3) is fixedly provided with a protrusion (5) on one side facing the second hinge arm (2), and a second rotating groove (6) is provided on the side wall of the protrusion (5) to rotate and contact the outer peripheral wall of the end of the second hinge arm (2).
4. The hinge limiting structure according to claim 3, characterized in that, The bottom of the protrusion (5) facing the second hinge arm (2) is provided with a transition arc (7).
5. A hinge limiting structure according to claim 4, characterized in that, The second hinge arm (2) is provided with an arc-shaped transition surface (8) and a clearance arc surface (24) on the side facing the transition arc (7).
6. A hinge limiting structure according to claim 5, characterized in that, The friction element (3) has a clearance notch (9) on the side facing the arc transition surface (8).
7. A hinge limiting structure according to claim 6, characterized in that, The first hinge arm (1) has a snap-fit groove (11), and the friction member (3) has a snap-fit block (10) fixedly installed in the snap-fit groove (11).
8. A hinge, characterized in that, The first hinge arm (1) includes the hinge limiting structure according to any one of claims 3-7, and further includes a hinge cup (12) and a hinge body (13). One end of the first hinge arm (1) is rotatably connected to the hinge cup (12) through a first pivot (14), and the other end is rotatably connected to the hinge body (13) through a second pivot (15). A torsion spring (16) is sleeved on the second pivot (15). The first rotating shaft (14) is in rotational contact with the first rotating groove (4).
9. A hinge according to claim 8, characterized in that, A damper (17) is provided inside the hinge (13), and the moving end of the damper (17) points to the hinge cup (12). One end of the second hinge arm (2) is rotatably connected to the hinge cup (12) via the third pivot (18), and the other end is rotatably connected to the hinge body (13) via the fourth pivot (19). The second rotating groove (6) is rotatably in contact with the outer wall of the end of the second hinge arm (2) located in the hinge cup (12). The end of the second hinge arm (2) located in the hinge body (13) is hinged to a connector (20). The end of the connector (20) away from the second hinge arm (2) is hinged to the swing member (21). The middle part of the swing member (21) is rotatably installed in the hinge body (13) via the fifth pivot (22). The end of the swing member (21) away from the connector (20) is hinged to the moving end of the damper (17).
10. A hinge according to claim 9, characterized in that, A hinge seat (23) is fixedly provided on the hinge body (13).