Adjustable limit force hinge

Abstract

The utility model discloses an adjustable limit force hinge belongs to hinge's technical field, including first sleeve, second sleeve, pin shaft, its through connection in first sleeve and second sleeve, limit force adjusting structure, its connection in pin shaft, first sleeve has first position and second position relative to second sleeve, and first sleeve is connected with second sleeve in first position, and limit force adjusting structure is located in the connecting position of first sleeve and second sleeve, and part structure of limit force adjusting structure abuts in the connecting position, and first sleeve is separated with second sleeve and forms gap in second position, and limit force adjusting structure is located in the gap. First sleeve and second sleeve are closely connected through the connecting position, and part structure of limit force adjusting structure will abut in the connecting position, prevents the relative rotation between first sleeve and second sleeve, and the user can install the adjustable limit force hinge's window sash and fix in the angle position that the user feels appropriate.

Description

Technical Field

[0001] This utility model relates to the technical field of hinges, and in particular to an adjustable limiting force hinge. Background Technology

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two objects (such as window sash and window frame, door sash and door frame) and allow them to rotate relative to each other about a fixed axis. It is widely used in furniture and construction, especially as a core connector in casement windows and casement doors, and is responsible for enabling the opening, closing and angle fixing of window / door sashes.

[0003] In existing technologies, most hinges on the market can ensure that window sashes can rotate flexibly when manually operated. However, in practical applications, when encountering slight wind (such as natural wind or indoor ventilation airflow), window sashes are prone to closing or opening on their own under the action of the wind: on the one hand, repeated collisions between the window sash and the window frame can lead to edge wear and loosening of the hinge connections, shortening the service life of doors and windows and increasing maintenance costs; on the other hand, accidental closing may injure users, and accidental opening (especially of high-rise windows) may cause the risk of falling objects, posing significant safety hazards. Utility Model Content

[0004] To overcome the technical problem in existing hinges that cannot be fixed after being operated to a suitable position and are easily affected by wind, this utility model provides an adjustable limiting force hinge, including a first sleeve; a second sleeve; a pin that passes through and connects the first sleeve and the second sleeve; and a limiting force adjustment structure connected to the pin. The first sleeve has a first position and a second position relative to the second sleeve. The first sleeve in the first position is connected to the second sleeve, and the limiting force adjustment structure is located at the connection position between the first sleeve and the second sleeve, with a portion of the limiting force adjustment structure fixed at the connection position. The first sleeve in the second position is separated from the second sleeve to form a gap, and the limiting force adjustment structure is located in the gap.

[0005] Furthermore, it also includes a snap-fit ​​bracket, which is fitted into the top end of the bushing in the inner cavity of the second sleeve to form a connection position between the first sleeve and the second sleeve. The inner wall surface of the snap-fit ​​bracket is provided with a plurality of internal teeth, and a groove is formed between two adjacent internal teeth. When the first sleeve is in the first position, at least part of the limiting force adjustment structure is snapped into the groove.

[0006] Furthermore, the internal teeth are provided with a circular arc transition.

[0007] Furthermore, the limiting force adjustment structure includes an elastic element and an adjusting element, wherein the adjusting element is connected to the elastic element; The pin has an elastic cavity, which is located between the first sleeve and the second sleeve, and the elastic cavity extends through the front and rear. The elastic element and the adjusting element are adapted to be installed in the elastic cavity, at least a portion of the elastic element extends out of the elastic cavity, and the adjusting element is used to adjust the length of the elastic element extending out of the elastic cavity.

[0008] Furthermore, the elastic element includes a ball, a spring, and a spring seat, with the ball fixed to the top of the spring and the bottom of the spring sleeved in the spring seat.

[0009] Furthermore, the second sleeve also includes an adjusting nut, and the inner wall of the second sleeve is threadedly connected to the adjusting nut.

[0010] Furthermore, the outer wall surface of the pin has an annular groove, and the portion of the pin with the annular groove is adapted to pass through the inner cavity of the first sleeve.

[0011] Furthermore, the first sleeve also includes a gasket located at the bottom end of the first sleeve.

[0012] Furthermore, the bushing is adapted to be installed in the inner cavity of the second sleeve, the top of the bushing has a flange, the wall of the second sleeve is engaged in the flange, the flange has multiple engagement positions, the engagement frame has engagement blocks, and the engagement blocks are engaged in the engagement positions.

[0013] Furthermore, it also includes two fan edges, which are integrally formed with the first sleeve and the second sleeve respectively; each fan edge has an installation section and an arc section, and the connection and fixing position of the arc section and the installation section form an angle. Beneficial effects

[0014] The beneficial effects of adopting the technical solution of this utility model are as follows: The limiting force adjustment structure is connected to the pin. The upper end of the pin passes through the inner cavity of the first sleeve, and the lower end of the pin passes through the inner cavity of the second sleeve. The first sleeve and the second sleeve can rotate relative to each other around the pin. The limiting force adjustment structure can adjust the resistance of the first sleeve and the second sleeve rotating relative to each other around the pin. The first sleeve has a first position and a second position relative to the second sleeve. When the first sleeve is in the first position, the bottom end of the first sleeve and the top end of the second sleeve form a connection position and are tightly connected through this connection position. A part of the limiting force adjustment structure is fixed in this connection position, generating resistance to external forces (such as natural wind) and preventing relative rotation between the first and second sleeves. The user can fix the window sash with the adjustable limiting force hinge installed at a position that the user feels is suitable, avoiding the technical defect in the prior art where the hinge cannot be fixed in the suitable position after being operated to the suitable position and is easily affected by wind. When the first sleeve is in the second position, the bottom end of the first sleeve and the top end of the second sleeve separate, forming a gap. The limiting force adjustment structure disengages from the connection position and is located in the gap. The first sleeve can rotate relative to the second sleeve, allowing the user to adjust the window sash with the adjustable limiting force hinge installed at will, giving the user a good product experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an adjustable limiting force hinge according to this utility model; Figure 2 This is a utility model Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a utility model Figure 1 Cross-sectional view along the BB direction; Figure 4 This is an exploded view of an adjustable limiting force hinge according to this utility model; Figure 5 This is a schematic diagram of the structure of an adjustable limiting force hinge clip frame according to this utility model; Figure 6 This is a schematic diagram of an adjustable limiting force hinge according to this utility model. Figure 1 ; Figure 7 This is a schematic diagram of an adjustable limiting force hinge according to this utility model. Figure 2 .

[0017] Explanation of the reference numerals in the figure: 1. First sleeve; 11. Gasket; 2. Second sleeve; 21. Bushing; 211. Snap-fit ​​flange; 212. Snap-fit ​​position; 22. Adjusting nut; 3. Pin; 31. Elastic cavity; 32. Annular groove; 4. Limiting force adjustment structure; 41. Elastic element; 411. Ball bearing; 412. Spring; 413. Spring seat; 42. Adjusting element; 5. Snap-fit ​​bracket; 51. Internal tooth; 52. Groove; 53. Snap-fit ​​block; 6. Fan edge; 61. Mounting section; 62. Curved section; 63. Angle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] Figure 6 This is a schematic diagram illustrating the movement of the first sleeve 1 toward the second position. Figure 7 This is a schematic diagram illustrating the implementation of the limiting force adjustment structure 4.

[0020] Please refer to Figures 1 to 7 An adjustable limiting force hinge includes a first sleeve 1; a second sleeve 2; a pin 3 that passes through and connects the first sleeve 1 and the second sleeve 2; and a limiting force adjusting structure 4 connected to the pin 3. The first sleeve 1 has a first position and a second position relative to the second sleeve 2. The first sleeve 1 in the first position is connected to the second sleeve 2. The limiting force adjusting structure 4 is located at the connection position between the first sleeve 1 and the second sleeve 2, and a portion of the limiting force adjusting structure 4 is fixed at the connection position. The first sleeve 1 in the second position is separated from the second sleeve 2 to form a gap, and the limiting force adjusting structure 4 is located in the gap.

[0021] In this technical solution, the limiting force adjustment structure 4 is connected to the pin 3. The upper end of the pin 3 passes through the inner cavity of the first sleeve 1, and the lower end of the pin 3 passes through the inner cavity of the second sleeve 2. The first sleeve 1 and the second sleeve 2 can rotate relative to each other around the pin. The limiting force adjustment structure 4 can adjust the resistance of the first sleeve 1 and the second sleeve 2 rotating relative to each other around the pin. The first sleeve 1 has a first position and a second position relative to the second sleeve 2. When the first sleeve 1 is in the first position, the bottom end of the first sleeve 1 and the top end of the second sleeve 2 form a connection position and are tightly connected through this connection position. A part of the limiting force adjustment structure 4 is fixed in this connection position, generating resistance to external forces (such as natural wind) and preventing relative rotation between the first sleeve 1 and the second sleeve 2. The user can fix the window sash with the adjustable limiting force hinge installed at a position that the user feels is suitable, avoiding the technical defect in the prior art where the hinge cannot be fixed in the suitable position after being operated to the suitable position and is easily affected by wind. When the first sleeve 1 is in the second position, the bottom end of the first sleeve 1 and the top end of the second sleeve 2 separate, forming a gap. The limiting force adjustment structure 4 is disengaged from the connection position and is located in the gap. The first sleeve 1 can rotate relative to the second sleeve 2. The user can adjust the window sash with the adjustable limiting force hinge installed at will, giving the user a good product experience.

[0022] It should be noted that this adjustable limit hinge can be installed not only on window sashes but also on doors; no specific limitation is made here.

[0023] Furthermore, by Figure 2 , Figure 4 and Figure 5As shown, it also includes a snap-fit ​​bracket 5, which is fitted onto the top end of the bushing 21 in the inner cavity of the second sleeve 2, forming a connection position between the first sleeve 1 and the second sleeve 2. The inner wall surface of the snap-fit ​​bracket 5 is provided with a plurality of internal teeth 51, and a groove 52 is formed between two adjacent internal teeth 51. When the first sleeve 1 is in the first position, at least part of the limiting force adjusting structure 4 is snapped into the groove 52. In this technical solution, the bushing 21 is adapted to be installed in the inner cavity of the second sleeve 2, and the top end of the bushing 21 extends from the top end of the second sleeve 2. The top end of the bushing 21 is fixedly connected to the top end of the second sleeve 2. The snap-fit ​​bracket 5 is fitted onto the top end of the bushing 5 to form a connection position between the first sleeve 1 and the second sleeve 2. The inner wall surface of the snap-fit ​​bracket 5 has a plurality of internal teeth 51, and a groove 52 is formed between two adjacent internal teeth 51. When the first sleeve 1 is in the first position, the bottom end of the first sleeve 1 is connected to the top end of the second sleeve 2. The locking bracket 5 is tightly connected, and a part of the limiting force adjustment structure 4 is locked in the groove 52 of the locking bracket 5. The limiting force adjustment structure 4 is fixed to the groove 52, generating resistance to external forces (such as natural wind) and preventing relative rotation between the first sleeve 1 and the second sleeve 2. The user can fix the window sash with the adjustable limiting force hinge installed at a position that the user feels is suitable. This avoids the technical defect in the prior art where the hinge cannot be fixed in the suitable position after being operated to the suitable position and is easily affected by wind.

[0024] Specifically, the assembly relationship between the clip bracket 5 and the second sleeve 2 is as follows: Figure 4 As shown, the bushing 21 is adapted to be installed in the inner cavity of the second sleeve 2. The top of the bushing 21 has a flange 211, and the wall of the second sleeve 2 is engaged in the flange 211. The flange 211 has multiple engagement positions 212. The engagement frame 5 has engagement blocks 53, and the engagement blocks 53 are engaged in the engagement positions 212. The structure is stable, and the engagement frame 5 can rotate with the rotation of the second sleeve 2. Furthermore, because the internal teeth 51 are set with a rounded transition, and part of the limiting force adjustment structure 4 is elastic... When the second sleeve 2 rotates, the snap-fit ​​bracket 5 rotates synchronously. The inner teeth 51 press and limit the elastic limiting force adjustment structure 4, releasing the force exerted by the limiting force adjustment structure 4 on the pin 3. The bottom end of the first sleeve 1 separates from the top end of the second sleeve 2, forming a gap. The limiting force adjustment structure 4 disengages from the connection position and is located in the gap. The first sleeve 1 can rotate relative to the second sleeve 2. Users can freely adjust the window sash with the adjustable limiting force hinge installed, providing users with a good product experience.

[0025] The specific embodiments of the limiting force adjustment structure 4 and the pin 3 are as follows: Figure 4As shown, the limiting force adjustment structure 4 includes an elastic element 41 and an adjusting element 42, with the adjusting element 42 connected to the elastic element 41. The pin 3 has an elastic cavity 31 located between the first sleeve 11 and the second sleeve 2, and the elastic cavity 31 extends through the pin. The elastic element 41 and the adjusting element 42 are adapted to be installed in the elastic cavity 31, with at least a portion of the elastic element 41 extending from the elastic cavity 31. The adjusting element 42 is used to adjust the length of the elastic element 41 extending from the elastic cavity 31. In this technical solution, when no external force is applied, the adjusting element 42 lifts the elastic element 41, thereby exposing a portion of the elastic element 41 in the elastic cavity 31 of the pin 3, and engaging it in the groove 52 of the engaging bracket 5. At this time, the first sleeve 1 and the second sleeve 2 are tightly connected.

[0026] The specific embodiment of the elastic element 41 is as follows: Figures 2 to 4 As shown, the elastic element 41 includes a ball 411, a spring 412, and a spring seat 413. The ball 411 is fixed to the top of the spring 412, and the bottom end of the spring 412 is fitted into the spring seat 413. The adjusting element 42 is preferably a hexagonal socket head cap screw, which facilitates adjustment of the adjusting element 42 by turning a hexagonal key. A detailed implementation diagram is provided below. Figure 7 As shown, when the hexagonal key rotates, the spring seat 413 drives the spring 412 to compress or extend, causing the ball 411 to extend into or eject from the elastic cavity 31 of the pin 3, so that the first sleeve 1 can be connected to the second sleeve 2.

[0027] Depend on Figure 3 , Figure 4 and Figure 6 As shown, the second sleeve 2 also includes an adjusting nut 22, and the inner wall of the second sleeve 2 is threadedly connected to the adjusting nut 22. In this technical solution, the adjusting nut 22 can be adjusted using a hexagonal key, allowing the adjusting nut 22 to move up and down within the inner cavity of the second sleeve 2. Figure 6 As shown, when the adjusting nut 22 moves upward, it abuts against the pin 3, and the first sleeve 1 moves upward. The bottom end of the first sleeve 1 separates from the top end of the second sleeve 2, forming a gap. At this time, the first sleeve 1 is in the second position, and the limiting force adjustment structure 4 pops out from the snap-fit ​​bracket 5. The limiting force adjustment structure 4 is located in the gap, and the first sleeve 1 can rotate relative to the second sleeve 2. Users can adjust the window sash with the adjustable limiting force hinge installed at will, giving users a good product experience.

[0028] Furthermore, by Figure 4As shown, the outer wall surface of the pin 3 has an annular groove 32, and the portion of the pin 3 with the annular groove 32 is fitted into the inner cavity of the first sleeve 1. The annular groove 32 is a groove structure on the surface of the pin 3. When the first sleeve 1 is fitted onto the pin 3, the protruding portions on both sides of the annular groove 32 will form an axial constraint on the first sleeve 1. If the first sleeve 1 moves axially, it will be blocked by the edge of the annular groove 32, preventing the first sleeve 1 from accidentally falling off the pin 3 in the second position.

[0029] Furthermore, by Figure 4 As shown, the first sleeve 1 also includes a gasket 11, which is located at the bottom end of the first sleeve 1. The gasket 11 serves as an adjusting element to fill the gap between the first sleeve 1 and the snap-fit ​​bracket 5, ensuring a tight connection between the first sleeve 1 and the second sleeve 2.

[0030] It should be noted that, by Figure 2 As shown, the hinge also includes two fan edges 6, which are integrally formed with the first sleeve 1 and the second sleeve 2, respectively. Each fan edge 6 has an installation section 61 and an arc section 62, and the arc section 62 and the installation section 61 form an angle 63 at their connection and fixing positions. In this technical solution, the fan edge 6 is integrally formed by the installation section 61 and the arc section 61, while the arc section 62 is integrally formed with the first sleeve 1 and the second sleeve 2. The installation section 61 is located on the side of the arc section 62 away from the first sleeve 1 and the second sleeve 2, and is used to fix it to the window sash. When the two components connected by the hinge (such as the door and the door frame) rotate, if the fan edge 6 is at a right angle, the edge and the corresponding contact surface (such as the hinge groove of the door frame) are prone to hard friction, which will lead to edge wear, paint peeling or deformation after long-term use. The angle 63 formed by the installation section 61 and the arc section 62 can transform "point contact" or "line contact" into a smoother "surface contact", disperse friction, and reduce the probability of parts scratching each other. Especially in scenarios with frequent opening and closing (such as interior doors and cabinet doors), it can significantly extend the life of hinges and connecting parts.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable limiting force hinge, characterized in that, include: First sleeve (1); Second sleeve (2); A pin (3) is connected through the first sleeve (1) and the second sleeve (2); A limiting force adjustment structure (4) is connected to the pin (3). The first sleeve (1) has a first position and a second position relative to the second sleeve (2). The first sleeve (1) located at the first position is connected to the second sleeve (2). The limiting force adjustment structure (4) is located at the connection position of the first sleeve (1) and the second sleeve (2), and a part of the limiting force adjustment structure (4) is fixed at the connection position. The first sleeve (1) located at the second position is separated from the second sleeve (2) to form a gap, and the limiting force adjustment structure (4) is located in the gap.

2. The adjustable limiting force hinge according to claim 1, characterized in that, It also includes a snap-fit ​​bracket (5), which is fitted into the top of the bushing (21) in the inner cavity of the second sleeve (2) to form a connection position between the first sleeve (1) and the second sleeve (2). The inner wall surface of the snap-fit ​​bracket (5) is provided with a plurality of internal teeth (51), and a groove (52) is formed between two adjacent internal teeth (51). When the first sleeve (1) is in the first position, at least part of the limiting force adjustment structure (4) is snapped into the groove (52).

3. The adjustable limiting force hinge according to claim 2, characterized in that, The internal teeth (51) are provided with a circular arc transition.

4. The adjustable limiting force hinge according to claim 1, characterized in that, The limiting force adjustment structure (4) includes an elastic element (41) and an adjusting element (42), wherein the adjusting element (42) is connected to the elastic element (41); The pin (3) has an elastic cavity (31), which is located between the first sleeve (1) and the second sleeve (2), and the elastic cavity (31) is arranged through the front and back. The elastic element (41) and the adjusting element (42) are adapted to be installed in the elastic cavity (31), at least part of the elastic element (41) extends out of the elastic cavity (31), and the adjusting element (42) is used to adjust the length of the elastic element (41) extending out of the elastic cavity (31).

5. An adjustable limiting force hinge according to claim 4, characterized in that, The elastic element (41) includes a ball (411), a spring (412) and a spring seat (413). The ball (411) is fixed to the top of the spring (412), and the bottom of the spring (412) is sleeved in the spring seat (413).

6. An adjustable limiting force hinge according to claim 1, characterized in that, The second sleeve (2) also includes an adjusting nut (22), and the inner wall of the second sleeve (2) is threadedly connected to the adjusting nut (22).

7. An adjustable limiting force hinge according to claim 1, characterized in that, The outer wall of the pin (3) has an annular groove (32), and the portion of the pin (3) with the annular groove (32) is adapted to pass through the inner cavity of the first sleeve (1).

8. An adjustable limiting force hinge according to claim 1, characterized in that, The first sleeve (1) further includes a gasket (11) located at the bottom end of the first sleeve (1).

9. An adjustable limiting force hinge according to claim 2, characterized in that, The bushing (21) is adapted to be installed in the inner cavity of the second sleeve (2). The top of the bushing (21) has a flap (211). The wall of the second sleeve (2) is engaged in the flap (211). The flap (211) has multiple engagement positions (212). The engagement frame (5) has an engagement block (53). The engagement block (53) is engaged in the engagement position (212).

10. An adjustable limiting force hinge according to claim 1, characterized in that, It also includes two fan edges (6), which are integrally formed with the first sleeve (1) and the second sleeve (2), respectively; the fan edge (6) has an installation section (61) and an arc section (62), and the arc section (62) and the installation section (61) form an angle (63) at the connection and fixing position.

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