90 degree positioning buffer hinge

Abstract

This utility model relates to a 90-degree positioning buffer hinge, belonging to the technical field of door and window hardware accessories. It includes a hinge piece and a multi-functional shaft. The multi-functional shaft includes an elastic structure and a reversing transmission structure. The reversing transmission structure has a circumferential end and an axial end. The circumferential end is connected to the hinge piece, and the axial end is connected to the elastic structure. The reversing transmission structure converts the circumferential rotation of the circumferential end and the axial movement of the axial end into each other, effectively converting the rotational motion generated when the door or window sash is opened into the axial movement of the compressive elastic structure, thus storing kinetic energy. When the external force of opening disappears, the elastic structure releases the stored energy, which, in conjunction with the buffer damping, drives the door or window sash to close smoothly and slowly automatically. This improves the functionality of the hinge, enhancing the convenience and safety of door and window use, and also improving the overall durability of the product.

Description

Technical Field

[0001] This utility model belongs to the technical field of door and window hardware accessories, specifically relating to a hinge device with specific angle positioning, automatic closing and buffering functions, especially a 90-degree positioning buffer hinge. Background Technology

[0002] Door and window hinges are key hardware components used in casement doors and windows. Their main function is to connect the door and window frame to the door and window sash, support their weight, and enable opening and closing. However, existing traditional door and window hinges are relatively simple, typically only providing basic rotational support. Once the door or window is opened using the hinge, it lacks an automatic closing mechanism, requiring manual closing by the user; otherwise, it will remain open. This open state can easily lead to energy waste from air conditioning and heating systems, and under external forces such as wind, the door and window sash can easily swing erratically, generating collision noise and even causing structural damage, affecting the user experience and product durability. Summary of the Invention

[0003] Based on the aforementioned problems in the existing technology, this utility model provides a 90-degree positioning buffer hinge, including a hinge piece and a multi-functional shaft. The multi-functional shaft includes an elastic structure and a reversing transmission structure. The reversing transmission structure is provided with a circumferential end and an axial end. The circumferential end is connected to the hinge piece, and the axial end is connected to the elastic structure. The reversing transmission structure converts the circumferential rotation of the circumferential end and the axial movement of the axial end into each other.

[0004] The hinge includes a first hinge and a second hinge, which are rotatably connected relative to each other about the multi-functional shaft as the central axis. The reversing transmission structure includes a guide sleeve, a spiral sleeve as the circumferential end, and a mandrel as the axial end. The guide sleeve is a cylindrical tubular sleeve, whose outer side is fixedly connected to the first hinge, and whose inner side is provided with a guide groove along the axial direction. The spiral sleeve is a cylindrical tubular sleeve, which includes a section of cylindrical tubular structure disposed inside the guide sleeve and rotatably connected to the inner wall of the guide sleeve. A spiral groove is provided, comprising a spiral segment spiraling around the central axis of a cylindrical tubular structure, the spiral groove being a through groove; the spiral sleeve is fixedly connected to the second hinge; the mandrel is disposed inside the spiral sleeve, forming a connection with the spiral sleeve that can rotate relative to each other and slide axially; a pin is fixedly provided on the outer side of the mandrel along a radial protrusion, the pin passing through the spiral groove and placed in the guide groove, while simultaneously slidingly engaging with both the spiral groove and the guide groove; the elastic structure is a spring, with one end abutting against the spiral sleeve and the other end abutting against the top end of the mandrel.

[0005] The multifunctional shaft also includes a buffer oil pump; the buffer oil pump is disposed at one end of the spiral sleeve opposite to the spring, and abuts axially between the end of the mandrel and the spiral sleeve.

[0006] The spiral groove further includes at least one of an arc-shaped groove platform or a locking position; the arc-shaped groove platform is an arc-shaped through groove coaxial with the central axis; the pin slides here without causing the spindle to move axially to compress the spring, and the spring's thrust on the spindle has zero force in the direction of rotation here; the pin can stop arbitrarily here; the locking position is a structure in which the groove wall of the spiral groove protrudes into the groove; the locking position, in conjunction with the spring, forms a basic positioning for the pin that slides to the side of the locking position, allowing external force to be applied to break through.

[0007] Depending on the application scenario, the number and position of the arc-shaped groove platform and the card slots can be reasonably set.

[0008] In a common design, the spiral groove includes the locking position; the end closest to the spring is considered the upper end; the locking position is located at the upper end of the spiral segment of the spiral groove; the spiral segment is an automatic door closing segment, and the locking position is set at the point where the door is fully open for positioning.

[0009] In a preferred embodiment, the spiral groove includes the locking position and the arc-shaped groove platform; the end closer to the spring is considered the upper end; the arc-shaped groove platform is located at the upper end of the spiral segment of the spiral groove; the locking position is located at the upper end of the arc-shaped groove platform; for example, a spiral segment with a 90-degree wrap angle is set, and then an arc-shaped groove platform is connected, with the locking position set at the near 180-degree door opening for positioning.

[0010] The pin passes through the central axis of the mandrel, and both ends of the pin protrude radially symmetrically on both sides of the mandrel; the guide groove and the spiral groove are arranged in pairs in a centrally symmetrical manner and are adapted to the two ends of the pin.

[0011] The spring is further provided with a spring sleeve on its outer side. A spring adjusting bolt is threaded to the end of the spring sleeve away from the spiral sleeve. One end of the spring abuts against the spring adjusting bolt, and the other end abuts against the shaft end of the mandrel. The spring sleeve is fixedly connected to the spiral sleeve.

[0012] The end of the spiral sleeve furthest from the spring is threadedly connected to an oil pump adjusting bolt; the buffer oil pump is axially abutted between the mandrel and the oil pump adjusting bolt.

[0013] A friction-reducing washer is provided between the spring and the spindle. The friction-reducing washer abuts against the spring and the spindle, reducing the contact area between the spring and the spindle and thus reducing the friction between them.

[0014] The beneficial effects of this utility model are as follows: By combining the reversing transmission structure with the elastic structure, the rotational motion generated when the door or window sash is opened under force can be effectively converted into the axial motion of the compressive elastic structure, so that kinetic energy can be stored. When the external force of opening the door or window sash disappears, the elastic structure immediately releases the stored energy, which, together with the buffer damping, can drive the door or window sash to close smoothly and slowly automatically. This improves the functionality of the hinge and overcomes the problems of energy waste, random collisions and structural damage caused by the inability of traditional hinges to close automatically. It not only enhances the convenience and safety of door and window use, but also improves the overall durability and energy-saving effect of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a 90-degree positioning buffer hinge according to this utility model, in its non-expanded state.

[0016] Figure 2 This is a schematic diagram of the overall structure of a 90-degree positioning buffer hinge according to this utility model, in its unfolded state.

[0017] Figure 3 This is a schematic diagram of the overall structure of a 90-degree positioning buffer hinge of this utility model from another angle, in its unfolded state.

[0018] Figure 4 This is a schematic diagram of the overall structure of the multifunctional shaft in this utility model.

[0019] Figure 5 This is a schematic diagram of the internal structure of the multifunctional shaft in this utility model.

[0020] Figure 6 This is a schematic diagram showing a deeper internal structure of the multifunctional shaft in this utility model.

[0021] Figure 7 This is a schematic diagram of the spiral sleeve in Embodiment 1 of this utility model.

[0022] Figure 8 This is a schematic diagram of the spiral sleeve in Embodiment 2 of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: like Figures 1 to 7The 90-degree positioning buffer hinge shown includes a hinge plate and a multi-functional shaft (3). The hinge plate includes a first hinge 1 and a second hinge 2, which are rotatably connected relative to each other about the multi-functional shaft 3 as the central axis. The multi-functional shaft 3 includes a guide sleeve 31, a spiral sleeve 32 as the circumferential end, a spring sleeve 33 as the axial end, a spring 34 as the elastic structure, a spindle 35, a buffer oil pump 36, and a friction-reducing pad 37. The guide sleeve 31, spiral sleeve 32, spring sleeve 33, spring 34, spindle 35, and friction-reducing pad 37 form a reversing transmission structure for converting the circumferential rotation of the circumferential end and the axial movement of the axial end. The guide sleeve 31 is a cylindrical tubular sleeve with a first anti-slip rib 51 on its outer side. A first outer sleeve 11 is fixedly sleeved on the outside of an anti-slip rib 51. The first outer sleeve 11 is fixedly connected to the middle section of the first hinge 1. The inner side of the guide sleeve 31 is cylindrically hollow, and a guide groove 41 is provided on the inner side along the axial direction. The guide groove 41 is a straight through groove. The spiral sleeve 32 is a cylindrical tubular sleeve. Its head end is located inside the guide sleeve 31 and is slidably and rotatably connected to the guide sleeve 31. Its tail end is outside the guide sleeve 31. A second anti-slip rib 52 is provided on the outer side of its tail end. A second outer sleeve 12 is fixedly sleeved on the outer side of the second anti-slip rib 52. The second outer sleeve 12 is fixedly connected to the lower section of the second hinge 2. The head end of the spiral sleeve 32 is also provided with a spiral groove 42, which includes a cylindrical groove around the spiral sleeve 32. The tubular structure has a helical section with a central axis spiral direction; the helical groove 42 is a through groove; the mandrel 35 is disposed inside the helical sleeve 32, and a pin 43 is fixedly fixed to the outer side of the mandrel 35 along the radial direction. The pin 43 passes through the central axis of the mandrel 35, and both ends of the pin 43 protrude radially symmetrically on both sides of the mandrel 35; the protruding parts of the two ends of the pin 43 pass through the helical groove 42 and are placed in the guide groove 41, and simultaneously slide with the helical groove 42 and the guide groove 41; the guide groove 41 and the helical groove 42 are respectively arranged in pairs with a central symmetrical distribution and are correspondingly adapted to the two ends of the pin 43; the spring sleeve 33 is disposed on the outer side of the spring 34, and the spring sleeve 33 is cylindrical tubular. A third outer sleeve 13 is fitted onto the outer side of the upper end, and the third outer sleeve 13 is fixedly connected to the upper section of the second hinge 2; the bottom end of the spring sleeve 33 is fixedly connected to the top end of the spiral sleeve 32; the bottom end of the spring sleeve 33 and the top end of the spiral sleeve 32 form a cylindrical rotating shaft, which is inside the guide sleeve 31 and rotatably connected to the guide sleeve 31; a spring adjusting bolt 38 is threadedly connected to the inner side of the top end of the spring sleeve 33, the top end of the spring 34 abuts against the spring adjusting bolt 38, and the bottom end of the spring 34 abuts against the friction reducing pad 37. The friction reducing pad 37 is saucer-shaped and abuts between the lower end of the spring 34 and the top end of the spindle 35, reducing the contact area between the spring 34 and the spindle 35, thereby reducing the friction in the rotation direction.The inner side of the bottom end of the spiral sleeve 32 is threadedly connected to an oil pump adjusting bolt 39; the bottom of the pump body of the buffer oil pump 36 abuts against the oil pump adjusting bolt 39, and the shaft of the buffer oil pump 36 abuts against the bottom end of the spindle 35.

[0025] In a preferred embodiment, the spiral groove 42 includes a spiral segment, an arc-shaped groove platform 44, and a locking position 45; with the end closest to the spring 34 as the upper end; the arc-shaped groove platform 44 is located at the upper end of the spiral segment of the spiral groove 42; the locking position 45 is located at the upper end of the arc-shaped groove platform 44; the arc-shaped groove platform 44 is an arc-shaped through groove coaxial with the central axis; the locking position 45 is a mound-shaped structure protruding into the groove on the lower side wall of the spiral groove 42; the locking position 45, in conjunction with the spring 34, forms a basic positioning for the pin 43 that slides past the locking position 45 to the side of the locking position 45, allowing external force to be applied to break through; wherein, the total wrap angle of the spiral groove 42 around the central axis is 180 degrees, and the wrap angle of the spiral segment around the central axis is 90 degrees.

[0026] The specific working principle of Example 1 is as follows: 1. Door opening process: Initial state: The door is closed, and the pin 43 is located at the end of the spiral groove 42 and guide groove 41 away from the spring 34. The spring 34 maintains a certain pre-compression force.

[0027] Rotation opening from 0 to 90 degrees: When an external force is applied to open the door, the second hinge 2 drives the spiral sleeve 32 to rotate via the second outer bushing 12 and the second anti-slip rib 52. Since both ends of the pin 43 are simultaneously engaged in the spiral groove 42 and the straight guide groove 41, the rotational movement of the spiral sleeve 32 forces the pin 43 to move along the trajectory of the front section of the spiral groove 42, i.e., the spiral segment with a 90-degree wrap angle. The spiral segment design guides the pin 43 during rotation, pushing the spindle 35 axially upwards towards the spring 34, thereby further compressing the spring 34. The spring 34 thus stores energy. The anti-friction washer 37 reduces the rotational friction between the spring 34 and the tip of the spindle 35 during this process.

[0028] When the door is rotated from 90 to 180 degrees: When the door opens beyond 90 degrees, pin 43 will enter the arc-shaped groove platform 44 area from the spiral section. This platform area is coaxial with the central axis, meaning that rotating the door within this range will not cause significant axial displacement of pin 43, and the spindle 35 and spring 34 will remain relatively stable, allowing the door to stop at any of these positions. If the door continues to open to the end of the spiral groove 42, approaching 180 degrees, pin 43 will slide past the locking position 45. Under the elastic force of spring 34, pin 43 will be temporarily restricted by locking position 45, requiring additional external force to break through the locking position and return, thus achieving a basic positioning point that can be broken through by external force.

[0029] Closing process: Positioning and release: If the door stops at the positioning point of the locking position 45, a small external force needs to be applied to make the pin 43 break through the restriction of the locking position 45.

[0030] Spring Force Release and Buffer Closing: Once the door begins to close, the compressed spring 34 releases its stored energy, pushing the spindle 35 back axially downwards. The spindle 35 acts on the spiral groove 42 via the pin 43, generating a force that drives the spiral sleeve 32 to rotate in the closing direction, thereby causing the second hinge 2 and the door to rotate. Simultaneously, the bottom of the spindle 35 applies pressure to the shaft of the buffer oil pump 36. The damping force generated by the buffer oil pump 36 continues to act, resisting and optimizing the energy released by the spring 34, ensuring the door closes at a controlled, smooth, and slow speed until fully closed, at which point the pin 43 also returns to its initial position at the front end of the spiral groove 42.

[0031] Buffering and positioning mechanisms: Energy storage and conversion: When the door is opened, the rotational motion is converted into the axial motion of the spindle 35 through the mechanism of the spiral groove 42, the pin 43 and the guide groove 41, which compresses the spring 34 to store energy.

[0032] Automatic closing: The potential energy stored in the spring 34 when the door is opened is released after the handle is released, pushing the spindle 35 to return to its axial position. Through the cooperation of the pin 43 and the spiral groove 42, the spiral sleeve 32 and the second hinge 2 are driven to reverse, realizing automatic closing.

[0033] Buffering: During the closing process, the spindle 35 axially resets and applies pressure to the shaft of the buffer oil pump 36. The buffer oil pump 36 dissipates the closing kinetic energy through hydraulic damping, achieving a smooth, silent, and shock-resistant closing effect.

[0034] Angular positioning: The specific structure of the spiral groove 42, such as the arc-shaped groove platform 44 and the locking position 45, cooperates with the pressure of the spring 34 to provide holding force at a specific angle, so as to achieve arbitrary stopping in the platform area after 90 degrees and temporary positioning at the locking position 45 near 180 degrees.

[0035] Adjustment function: Spring adjusting bolt 38 can be used to adjust the pre-compression of spring 34, thereby adjusting the force of automatic closing and the breakthrough force required by the positioning mechanism; Oil pump adjusting bolt 39 can finely adjust the initial pre-pressure of buffer oil pump 36 by displacement, thereby adjusting the closing speed and buffering force.

[0036] Example 2: like Figure 8 As shown, Embodiment 2 is a modification of Embodiment 1. The arc-shaped groove platform 44 in the middle section of the spiral groove 42 is removed and the locking position 45 is directly set. The spiral groove 42 is divided into a spiral section at the front and a locking position 45 at the end, with a total wrap angle of 90 degrees. The locking position 45, together with the spring 34, forms a basic positioning for the pin 43 that rotates to the end of the spiral groove 42, which can be broken by external force.

[0037] The working principle of Example 2 is as follows: 1. Door opening process: Similar to Embodiment 1, when the door begins to rotate, the second hinge 2 drives the spiral sleeve 32 to rotate via the second outer bushing 12 and the second anti-slip rib 52. The pin 43 moves within the spiral section of the spiral groove 42, pushing the spindle 35 to move axially upward, compressing the spring 34 to store energy; when the rotation opens to nearly 90 degrees: the pin 43 enters the end of the spiral groove 42, slides past the locking position 45 and is positioned, and the door is in the positioned state.

[0038] Closing process: If the door stops at the positioning point of the locking position 45, a small external force needs to be applied to make the pin 43 break through the restriction of the locking position 45.

[0039] Once the door begins to close, the compressed spring 34 releases its energy, pushing the spindle 35 to return to its axial downward position. The spindle 35 acts on the spiral groove 42 through the pin 43, generating a force that drives the spiral sleeve 32 to reverse, thereby causing the second hinge 2 and the door to rotate in the closing direction.

[0040] At the same time, the bottom of the spindle 35 applies pressure to the shaft of the buffer pump 36. The damping force generated by the buffer pump 36 continues to act, resisting and optimizing the energy released by the spring 34, ensuring that the door closes at a controlled and smooth speed until it is fully closed.

[0041] Compared with Example 1, Example 2 omits the arc-shaped groove platform 44 inside the spiral groove 42, and provides a clear and fixed mechanical positioning point through the locking position 45. Positioning is implemented after the door is opened 90 degrees, which is suitable for scenarios where the door opening position should not exceed 90 degrees.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A 90 degree positioning damped hinge, characterized in that, It includes a hinge plate and a multi-functional shaft (3). The multi-functional shaft (3) includes an elastic structure and a reversing transmission structure. The reversing transmission structure is provided with a circumferential end and an axial end. The circumferential end is connected to the hinge plate, and the axial end is connected to the elastic structure. The reversing transmission structure converts the circumferential rotation of the circumferential end and the axial movement of the axial end into each other.

2. A 90 degree positioning damped hinge according to claim 1, characterized in that The hinge includes a first hinge (1) and a second hinge (2), which are rotatably connected relative to each other about the multi-functional shaft (3) as the central axis; the reversing transmission structure includes a guide sleeve (31), a spiral sleeve (32) as the circumferential end, and a spindle (35) as the axial end; the guide sleeve (31) is a cylindrical tubular sleeve, which is fixedly connected to the first hinge (1) on its outer side, and has a guide groove (41) arranged axially on its inner side; the spiral sleeve (32) includes a cylindrical tubular structure disposed on the inner side of the guide sleeve (31) and rotating along the inner wall of the guide sleeve (31), and the cylindrical tubular structure is provided with a spiral groove (42), the spiral groove (42) covering The spiral section extends around the central axis of the cylindrical tubular structure, and the spiral groove (42) is a through groove; the spiral sleeve (32) is fixedly connected to the second hinge (2); the mandrel (35) is disposed inside the spiral sleeve (32) and forms a connection with the spiral sleeve (32) that can rotate relative to each other and slide axially; a pin (43) is fixedly provided on the outer side of the mandrel (35) along the radial protrusion, the pin (43) passes through the spiral groove (42) and is placed in the guide groove (41), and slides with the spiral groove (42) and the guide groove (41); the elastic structure is a spring (34) with one end abutting against the spiral sleeve (32) and the other end abutting against the shaft end of the mandrel (35).

3. A 90-degree positioning buffer hinge according to claim 2, characterized in that, The multifunctional shaft (3) also includes a buffer oil pump (36); the buffer oil pump (36) is disposed in the spiral sleeve (32) at one end opposite to the spring (34), and abuts axially between the end of the spindle (35) and the spiral sleeve (32).

4. A 90-degree positioning buffer hinge according to claim 2, characterized in that, The spiral groove (42) further includes at least one of an arc-shaped groove platform (44) or a locking position (45); the arc-shaped groove platform (44) is an arc-shaped through groove coaxial with the central axis; the locking position (45) is a structure in which the groove wall of the spiral groove (42) protrudes into the groove; the locking position (45) cooperates with the spring (34) to form a basic positioning for the pin (43) that slides to the side of the locking position (45) to be able to be broken by external force.

5. A 90-degree positioning buffer hinge according to claim 4, characterized in that, The spiral groove (42) includes the locking position (45); with the end closer to the spring (34) as the upper end; the locking position (45) is located at the upper end of the spiral segment of the spiral groove (42).

6. A 90-degree positioning buffer hinge according to claim 4, characterized in that, The spiral groove (42) includes the locking position (45) and the arc-shaped groove platform (44); with the end closer to the spring (34) as the upper end; the arc-shaped groove platform (44) is located at the upper end of the spiral segment of the spiral groove (42); the locking position (45) is located at the upper end of the arc-shaped groove platform (44).

7. A 90-degree positioning buffer hinge according to claim 2, characterized in that, The pin (43) passes through the central axis of the mandrel (35) and both ends of the pin (43) protrude radially symmetrically on both sides of the mandrel (35); the guide groove (41) and the spiral groove (42) are respectively centrally symmetrically distributed in pairs and are adapted to the two ends of the pin (43).

8. A 90-degree positioning buffer hinge according to claim 2, characterized in that, A spring sleeve (33) is also provided on the outside of the spring (34). A spring adjusting bolt (38) is threaded to one end of the spring sleeve (33) away from the spiral sleeve (32). One end of the spring (34) abuts against the spring adjusting bolt (38), and the other end abuts against the shaft end of the spindle (35). The spring sleeve (33) is fixedly connected to the spiral sleeve (32).

9. A 90-degree positioning buffer hinge according to claim 3, characterized in that, The end of the spiral sleeve (32) away from the spring (34) is threadedly connected to an oil pump adjusting bolt (39); the buffer oil pump (36) is axially abutted between the mandrel (35) and the oil pump adjusting bolt (39).

10. A 90-degree positioning buffer hinge according to claim 2, characterized in that, A friction-reducing washer (37) is also provided between the spring (34) and the spindle (35), and the friction-reducing washer (37) abuts against the spring (34) and the spindle (35).

Images