Limiting hinge
By using the design of the limiting hinge, and by utilizing the movement of the adjusting block between the rotating groove, the limiting groove, and the unlocking groove, the problem of fixing the angle adjustment device at a specific angle is solved, realizing free flipping and unidirectional angle fixing, thus improving the user experience of functional furniture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RAYCITY INTELLIGENT HOME FURNISHING CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-05
AI Technical Summary
In existing technologies, angle adjustment devices cannot rotate freely when a specific angle is not reached, and they cannot achieve unidirectional angle fixation, resulting in a poor user experience for functional furniture.
A limiting hinge is designed, including a rotating shaft, a first rotating component, and a second rotating component. By moving the adjusting block between the rotating groove, the limiting groove, and the unlocking groove, the adjusting block is unlocked and locked using an elastic element and a wedge structure, achieving free rotation and fixation at a specific angle.
It enables free rotation before reaching a specific angle and unidirectional angle fixation after reaching a specific angle, thus improving the ease of use and stability of functional furniture.
Smart Images
Figure CN224200966U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture accessories, and in particular to a limiting hinge. Background Technology
[0002] In functional furniture, such as sofas, chairs, and beds, angle adjustment devices are often used to achieve functions such as backrest angle adjustment. This utility model designs a limiting hinge that can be freely rotated before reaching a specific angle, and can achieve unidirectional angle fixation after reaching a specific angle. It can be used for angle adjustment of corresponding functional components in functional furniture. Utility Model Content
[0003] In view of the above-mentioned prior art, the purpose of this utility model is to provide a limiting hinge that can be freely rotated when a specific angle is not reached, and can achieve unidirectional angle fixation after a specific angle is reached.
[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:
[0005] This utility model provides a limiting hinge, including a rotating shaft, a first rotating member, and a second rotating member. The first and second rotating members are mounted on the rotating shaft and rotate coaxially on the rotating shaft. The first rotating member is provided with an adjustment part, and the adjustment part is provided with an adjustment block. The second rotating member is provided with a rotating groove. When the first and second rotating members rotate relative to each other, the adjustment block moves in the rotating groove. The adjustment block has an unlocked position and a locked position in the adjustment part. One end of the rotating groove is connected to a limiting groove, and one end of the limiting groove is connected to an unlocking groove. When the adjustment block is in the locked position, the adjustment block enters the limiting groove from the rotating groove, and the movement of the adjustment block toward the rotating groove is limited.
[0006] Furthermore, in the aforementioned limiting hinge, the adjusting block enters the unlocking groove and abuts against the end of the unlocking groove, the adjusting block enters the unlocking position, and the adjusting block can enter the rotating groove through the limiting groove.
[0007] Furthermore, in the aforementioned limiting hinge, the adjusting block moves to the end of the unlocking groove, the adjusting block abuts against the end of the unlocking groove, and the adjusting block enters the locked position.
[0008] Furthermore, in the limiting hinge, the first rotating member is provided with an elastic element that keeps the adjusting block in the locked or unlocked position.
[0009] Furthermore, in the aforementioned limiting hinge, the adjusting part is wedge-shaped, and a step is provided between the unlocking position and the locking position.
[0010] Furthermore, in the aforementioned limiting hinge, the limiting groove includes a protrusion and a recess. When the adjusting block in the locked position enters the recess, its movement is restricted by the protrusion on the side where the rotation groove is located.
[0011] Furthermore, in the aforementioned limiting hinge, both the protrusion and the recess are located on the side of the limiting groove away from the rotating shaft.
[0012] Furthermore, in the aforementioned limiting hinge, the rotating groove, limiting groove, and unlocking groove are connected as a whole and are arc-shaped, with the width of the rotating groove being greater than the width of the unlocking groove.
[0013] Furthermore, the limiting hinge, the integral arrangement of the rotating groove, the limiting groove and the unlocking groove is two or more, and is centrally symmetrical about the rotating shaft.
[0014] Furthermore, the limiting hinge also includes a first rotating arm and a second rotating arm. The first rotating arm is fixedly connected to the first rotating member, and the second rotating member is provided with a pair of arms sandwiched on both sides of the first rotating member. The second rotating member is fixedly connected to the second rotating arm.
[0015] Compared to existing technologies, this utility model provides a limiting hinge, including a rotating shaft, a first rotating member, and a second rotating member. The first and second rotating members are mounted on the rotating shaft and rotate coaxially on the shaft. The first rotating member is provided with an adjustment part, and the adjustment part contains an adjustment block. The second rotating member is provided with a rotating groove. When the first and second rotating members rotate relative to each other, the adjustment block moves in the rotating groove. The adjustment block has an unlocked position and a locked position in the adjustment part. One end of the rotating groove is connected to a limiting groove, and one end of the limiting groove is connected to an unlocking groove. When the adjustment block is in the locked position, the adjustment block moves from the rotating groove into the limiting groove, and the movement of the adjustment block toward the rotating groove is restricted. In this invention, the first rotating member drives the adjusting block to move within the second rotating member. When the adjusting block is in the locked position, the adjusting block located in the rotating groove can move back and forth within the rotating groove, achieving free flipping. When the adjusting block enters the limiting groove, that is, when a specific angle is reached, the movement to the rotating groove is restricted, thus achieving angle restriction in that direction. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.
[0017] Figure 1 An exploded structural diagram of the limiting hinge provided by this utility model.
[0018] Figure 2 A schematic diagram of the limiting hinge provided by this utility model in one state where the adjusting block is in the unlocked position.
[0019] Figure 3 A schematic diagram of the structure of the limiting hinge provided by this utility model in a locked position.
[0020] Figure 4 A schematic diagram of the internal structure of the layer containing the second rotating component of the limiting hinge provided by this utility model.
[0021] Explanation of icon numbers:
[0022] Shaft 10
[0023] First rotating component 11
[0024] Second rotating component 12
[0025] Adjustment unit 13
[0026] Adjusting block 14
[0027] Rotating slot 15
[0028] Unlock location 16
[0029] Lock position 17
[0030] Limiting groove 18
[0031] Unlock Slot 19
[0032] Elastic element 20
[0033] Step 21
[0034] 22 convex head
[0035] Concave 23
[0036] First rotating arm 24
[0037] Second rotating arm 25 Detailed Implementation
[0038] 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.
[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a limiting hinge, including a rotating shaft 10, a first rotating member 11, and a second rotating member 12. The first rotating member 11 and the second rotating member 12 are mounted on the rotating shaft 10 and rotate coaxially on the rotating shaft 10. An adjustment part 13 is provided on the first rotating member 11, and an adjustment block 14 is provided in the adjustment part 13. A rotating groove 15 is provided on the second rotating member 12. When the first rotating member 11 and the second rotating member 12 rotate relative to each other, the adjustment block 14 moves in the rotating groove 15. The adjustment block 14 has an unlocked position 16 and a locked position 17 in the adjustment part 13. One end of the rotating groove 15 is connected to a limiting groove 18, and one end of the limiting groove 18 is connected to an unlocking groove 19. When the adjustment block 14 is in the locked position 17, the adjustment block 14 moves from the rotating groove 15 into the limiting groove 18, and the movement of the adjustment block 14 toward the rotating groove 15 is limited. In this utility model, the first rotating member 11 drives the adjusting block 14 to move in the second rotating member 12. When the adjusting block 14 is in the locked position 17, the adjusting block 14 located in the rotating groove 15 can move back and forth in the rotating groove 15 to achieve free flipping. When the adjusting block 14 enters the limiting groove 18, that is, when a specific angle is reached, the movement to the rotating groove 15 is restricted, thereby achieving angle restriction in that direction.
[0042] Furthermore, in the limiting hinge provided by this utility model, the adjusting block 14 enters the unlocking groove 19 and abuts against the end of the unlocking groove 19, so that the adjusting block 14 enters the unlocked position 16. The adjusting block 14 can also enter the rotating groove 15 through the limiting groove 18. Furthermore, in the limiting hinge provided by this utility model, the adjusting block 14 moves to the end of the unlocking groove 19, and abuts against the end of the unlocking groove 19, so that the adjusting block 14 enters the locked position 17. This utility model mainly achieves the position adjustment of the upper adjusting block 14 through the abutting cooperation between the end of the unlocking groove 19 and the end of the rotating groove 15 and the adjusting block 14. Furthermore, in the limiting hinge provided by this utility model, the first rotating member 11 is provided with an elastic member 20 that keeps the adjusting block 14 in the locked position 17 or the unlocked position 16. In this embodiment, the adjusting block 14 is a strip-shaped block. Furthermore, in the limiting hinge provided by this utility model, the adjusting part 13 is wedge-shaped, and a step 21 is provided between the unlocking position 16 and the locking position 17. The unlocking groove 19 gradually rotates the adjusting block 14 to the unlocking position 16, and the pushing action at the end of the unlocking groove 19 causes one end of the adjusting block 14 to be completely placed on the step 21 at the unlocking position 16. The end of the rotating groove 15 then pushes the adjusting block 14 away from the step 21 from another direction, and then, under the action of the elastic member 20, returns it to the locking position 17, thus disengaging from the unlocking position 16.
[0043] Furthermore, in the limiting hinge provided by this utility model, the limiting groove 18 includes a protrusion 22 and a recess 23. When the adjusting block 14 in the locked position 17 enters the recess 23, its movement is restricted by the protrusion 22 on the side where the rotation groove 15 is located. When the adjusting block 14 in the locked position 17 enters the recess 23 from the rotation groove 15, it is first moved by the protrusion 22. As the first rotating member 11 continues to move, the adjusting block 14 enters the recess 23 under the action of the elastic member 20. Furthermore, in the limiting hinge provided by this utility model, the protrusion 22 and the recess 23 are both located on the side of the limiting groove 18 away from the rotating shaft 10. Furthermore, in the limiting hinge provided by this utility model, the rotation groove 15, the limiting groove 18, and the unlocking groove 19 are connected as a whole and are arc-shaped. The width of the rotation groove 15 is greater than the width of the unlocking groove 19. As the rotation continues, the outer edge of the unlocking slot 19 will lift the adjusting block 14, thereby aligning it with the unlocking position 16 on the step 21.
[0044] Furthermore, the limiting hinge provided by this utility model has two or more integral arrangements of the rotating groove 15, limiting groove 18, and unlocking groove 19, and is centrally symmetrically arranged with the rotating shaft 10 as the center. In this embodiment, there is a pair. Furthermore, the limiting hinge provided by this utility model also includes a first rotating arm 24 and a second rotating arm 25. The first rotating arm 24 is fixedly connected to the first rotating member 11. A pair of second rotating members 12 are provided and sandwiched on both sides of the first rotating member 11. The second rotating member 12 is fixedly connected to the second rotating arm 25. The first rotating arm 24 and the second rotating arm 25 can rotate relative to each other. If the second rotating arm 25 is fixed and the first rotating arm 24 rotates, then when the adjusting block 14 of the locked position 17 is located in the unlocking groove 19, the first rotating arm 24 can freely rotate within a certain angle range. When the first rotating arm 24 rotates to a specific angle, so that the adjusting block 14 enters the limiting groove 18, the first rotating arm 24 cannot enter the rotating groove 15, so that it can be fixed unidirectionally at a specific angle.
[0045] In summary, in this utility model, the first rotating member drives the adjusting block to move within the second rotating member. When the adjusting block is in the locked position, the adjusting block located in the rotating groove can move back and forth within the rotating groove, achieving free rotation. When the adjusting block enters the limiting groove, that is, when a specific angle is reached, the movement to the rotating groove is restricted, thus achieving angle restriction in that direction.
[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A limiting hinge, characterized in that, The device includes a rotating shaft, a first rotating component, and a second rotating component. The first and second rotating components are mounted on the rotating shaft and rotate coaxially on the shaft. The first rotating component has an adjustment part, and the adjustment part contains an adjustment block. The second rotating component has a rotating groove. When the first and second rotating components rotate relative to each other, the adjustment block moves in the rotating groove. The adjustment block has an unlocked position and a locked position in the adjustment part. One end of the rotating groove is connected to a limit groove, and one end of the limit groove is connected to an unlocking groove. When the adjustment block is in the locked position, it moves from the rotating groove into the limit groove, and its movement toward the rotating groove is restricted.
2. The limiting hinge according to claim 1, characterized in that, The adjusting block enters the unlocking groove and abuts against the end of the unlocking groove, so that the adjusting block enters the unlocking position and can enter the rotating groove through the limiting groove.
3. The limiting hinge according to claim 2, characterized in that, The adjusting block moves to the end of the unlocking slot, and the adjusting block abuts against the end of the unlocking slot, thus entering the locked position.
4. The limiting hinge according to claim 3, characterized in that, The first rotating component is provided with an elastic element that keeps the adjusting block in the locked or unlocked position.
5. The limiting hinge according to claim 4, characterized in that, The adjustment part is wedge-shaped, and a step is provided between the unlock position and the lock position.
6. The limiting hinge according to claim 4, characterized in that, The limiting groove includes a protrusion and a recess. When the adjusting block of the locked position enters the recess, its movement is restricted by the protrusion on the side where the rotation groove is located.
7. The limiting hinge according to claim 6, characterized in that, Both the protrusion and the recess are located on the side of the limiting groove away from the rotating shaft.
8. The limiting hinge according to claim 7, characterized in that, The rotating groove, the limiting groove, and the unlocking groove are connected as one unit and are arc-shaped as a whole. The width of the rotating groove is greater than the width of the unlocking groove.
9. The limiting hinge according to claim 8, characterized in that, The rotating groove, limiting groove and unlocking groove are arranged in a whole of two or more, and are arranged symmetrically with the rotating shaft as the center.
10. The limiting hinge according to any one of claims 1-9, characterized in that, It also includes a first rotating arm and a second rotating arm. The first rotating arm is fixedly connected to the first rotating component. The second rotating component is provided in a pair and is clamped on both sides of the first rotating component. The second rotating component is fixedly connected to the second rotating arm.