Hinge capable of adjusting door opening mode

Abstract

A hinge capable of adjusting a door opening mode comprises a first leaf wing, a second leaf wing and a hinge shaft which is inserted between the first leaf wing and the second leaf wing and used for forming relative rotation between the first leaf wing and the second leaf wing, and the hinge shaft comprises a first barrel, a second barrel and a fixed barrel which is located between the first barrel and the second barrel and arranged outside the first barrel and the second barrel in a sleeving mode, a transmission assembly is arranged between the first barrel and the fixed barrel, an adjusting assembly used for adjusting the door closing force is arranged between the second barrel and the fixed barrel, the transmission assembly can switch two transmission modes of silent transmission and locking transmission, and when the transmission assembly is adjusted to the silent transmission mode, the first fan wing and the second fan wing achieve door closing at the uniform speed. When the transmission assembly is adjusted to the locking transmission mode, the first fan wing and the second fan wing accelerate at the door closing position to achieve door closing. The door closing mechanism has the beneficial effects that two different door closing modes are realized by designing the hinge shaft with the first barrel body, the second barrel body and the fixed barrel body and combining the transmission assembly and the adjusting assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door hinge, especially a hinge with adjustable door opening mode. BACKGROUND

[0002] The integral hydraulic door hinge is a door control device integrating mechanical transmission and hydraulic buffering function, and the core is that the hydraulic cylinder, piston, spring and other key components are integrated in the hinge main structure to form a compact and efficient modular design. The hinge usually adopts screw transmission technology, realizes the opening and closing control of the door leaf through the linkage of the rotating shaft and the piston, and utilizes the compression spring to provide automatic reset power without external door closer. It has wide application prospects in the fields of building doors and windows, industrial equipment and the like.

[0003] The existing integral hydraulic door hinge has obvious defects. On the one hand, due to the structure design and manufacturing process problems, the sealing part is easy to be damaged under the influence of frequent opening and closing mechanical stress and temperature change, resulting in hydraulic oil leakage, which not only pollutes the surrounding environment, but also reduces the hinge buffering performance and shortens the service life. On the other hand, the established door closing mode at the factory cannot be switched and adjusted in the later stage according to the actual use scene (such as different requirements for door closing speed and force in different places), and the use flexibility is poor, which is difficult to meet the diversified needs. TECHNICAL SOLUTION

[0004] In view of the defects of the prior art, the utility model provides a hinge with adjustable door opening mode.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a hinge with adjustable door opening mode, comprising a first fan wing, a second fan wing and a hinge shaft inserted between the first fan wing and the second fan wing for forming the relative rotation between the two, the hinge shaft comprising a first cylinder, a second cylinder fixedly connected and a fixed cylinder sleeved outside the two, a transmission assembly is arranged between the first cylinder and the fixed cylinder, an adjusting assembly for adjusting the door closing force is arranged between the second cylinder and the fixed cylinder, the transmission assembly can switch between two transmission modes of silent transmission and latch transmission, when the transmission assembly is adjusted to the silent transmission mode, the first fan wing and the second fan wing realize door closing at a uniform speed, and when the transmission assembly is adjusted to the latch transmission mode, the first fan wing and the second fan wing accelerate to realize door closing at the door closing position.

[0006] The utility model discloses the beneficial effect is: through design has the hinge shaft of first cylinder, second cylinder and fixed cylinder, and combining transmission assembly and adjusting assembly, realized two different door closing modes. This structure can switch the quiet transmission and the lock transmission mode according to user demand, satisfy the use demand under different scenes. Meanwhile, the design of adjusting assembly makes the door closing strength can be adjusted flexibly, further improves the comfort and adaptability of use. As a preferred mode, the switching of door closing mode can be realized by adjusting the fluid flow efficiency in the oil cylinder, for example, in the quiet door closing mode, the fluid flow efficiency is higher, makes the door body uniform speed close, and in the lock door closing mode, the fluid flow efficiency reduces, accelerates the door closing and sends the lock sound when approaching the door closing position. In addition, the structure can realize the function through the hydraulic damping principle, and the overall stability is high, and the service life is long.

[0007] Further, the transmission assembly includes a switching nut threadedly connected at an opening of the first cylinder away from the fixed cylinder, a switching oil cylinder slidingly disposed within the first cylinder and used to switch the transmission mode after the switching nut is rotated, a thimble, and a transmission pin, one end of the switching oil cylinder abuts against the switching nut, and the other end abuts against the thimble, the thimble is provided with a through hole for the transmission pin to pass through, one side of the first cylinder close to the fixed cylinder is provided with a transmission channel for the transmission pin to be inserted therein and in a spiral shape, one side of the fixed cylinder close to the first cylinder is provided with a positioning groove for the transmission pin to be clamped, both ends of the transmission pin pass through the transmission channel and are clamped in the positioning groove, and the transmission pin moves in the transmission channel to form relative rotation between the first cylinder and the fixed cylinder.

[0008] The technical solution realizes precise switching of the transmission mode through the cooperative action of the switching nut, the switching oil cylinder, the thimble, and the transmission pin. This structure design is simple and reliable, easy to operate, and avoids the problem of easy wear of traditional mechanical structures. As a preferred mode, multiple spiral angle options can be added in the design of the transmission channel to further optimize the door closing speed and strength in different modes. For example, when a larger spiral angle is used, the transmission pin moves faster, which is suitable for the lock transmission mode; and when a smaller spiral angle is used, the transmission pin moves stably, which is suitable for the quiet transmission mode. This design not only improves the functional diversity, but also enhances the durability of the structure. In addition, the switching oil cylinder arranged in a split manner can effectively avoid the phenomenon of easy oil leakage caused by filling fluid in the entire first cylinder.

[0009] Further, the adjusting assembly includes an adjusting nut threadedly connected at an opening of the second cylinder away from the fixed cylinder and a transmission spring abutting against one end of the adjusting nut, a conduction block for transmitting torque is arranged between the transmission spring and the thimble, and the adjusting nut is rotated to change the transmission torque of the transmission spring.

[0010] The technical scheme realizes precise control of the door closing force by adjusting the cooperation of the adjusting nut and the transmission spring. The rotation of the adjusting nut changes the compression degree of the transmission spring, thereby adjusting the torque size transmitted. This design enables users to flexibly adjust the door closing speed and force according to actual needs, improving the user experience. As a preferred mode, a multi-section elastic coefficient change can be added to the design of the transmission spring, so that it exhibits different elastic properties at different compression degrees. For example, a lower elastic coefficient is used in the initial stage to achieve a soft door closing effect, and a higher elastic coefficient is used when approaching the door closing position to provide stronger door closing force. This design not only enhances the flexibility of the function, but also effectively reduces the discomfort caused by too fast or too slow door closing.

[0011] Further, the thimble includes a connecting rod, a wrapping portion arranged near one side of the switching oil cylinder, and a thrust portion arranged near one side of the conducting block, the switching oil cylinder is at least partially arranged in the wrapping portion to prevent the switching oil cylinder from deviating during torque transmission, and the outer diameter of the thrust portion is greater than the outer diameter of the connecting rod.

[0012] The technical scheme effectively solves the deviation problem that may occur during torque transmission of the switching oil cylinder through the design of the wrapping portion and the thrust portion of the thimble, while ensuring the stability of torque transmission. The wrapping portion design wraps part of the structure of the switching oil cylinder, limiting its displacement range, thereby avoiding the deviation phenomenon during torque transmission. The larger outer diameter of the thrust portion ensures sufficient contact area with the conducting block, further improving the efficiency and reliability of torque transmission. As a preferred mode, a guide groove can be provided on the inner wall of the wrapping portion to cooperate with the outer wall of the switching oil cylinder, further enhancing its positioning accuracy. In addition, the surface of the thrust portion can be treated with wear-resistant materials to prolong its service life and reduce friction loss.

[0013] Further, the switching oil cylinder includes a housing with an open end and a fluid arranged therein, and a piston rod extending from the opening of the housing, the piston rod includes a force receiving portion located in the housing and forming a gap cooperation with the inner wall of the housing, and the inner wall of the housing is further provided with a oil discharge groove, the switching nut drives the piston rod to move from the initial position in the housing, when the switching oil cylinder is in the silent door closing mode, the initial position of the piston rod forms a gap cooperation with the inner wall of the housing, when the switching oil cylinder is in the drop lock door closing mode, the initial position of the piston rod is located at the oil discharge groove.

[0014] The technical scheme realizes the switching of the mute door closing mode and the lock drop door closing mode by switching the change of the fluid flow efficiency in the oil cylinder. When the piston rod is located in the gap fitting area of the inner wall of the shell, the fluid flow efficiency is relatively high, the door body can be uniformly closed, and the mute effect is formed; and when the piston rod moves to the oil discharge groove, the fluid flow efficiency is reduced, so that the door body is accelerated to close when approaching the closing position, and the lock drop sound is generated. This design fully utilizes the principle of hydraulic damping, has compact structure and stable performance. As a preferred mode, an adjustable throttle valve can be arranged at the oil discharge groove of the inner wall of the shell, so as to further optimize the change curve of the fluid flow efficiency. For example, by adjusting the opening degree of the throttle valve, the acceleration effect in the lock drop door closing mode can be accurately controlled, so as to meet the individualized needs of different users. This design not only improves the flexibility of the function, but also enhances the applicability of the structure.

[0015] Further, the first cylinder body and the second cylinder body are connected by threads at one end close to each other.

[0016] The technical scheme facilitates the assembly of the first cylinder body and the second cylinder body, and facilitates disassembly and maintenance when a fault occurs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the embodiment of the utility model;

[0018] Figure 2 is an exploded view of the embodiment of the utility model;

[0019] Figure 3 is a sectional view of the embodiment of the utility model;

[0020] Figure 4 is a sectional view of the switching oil cylinder of the embodiment of the utility model;

[0021] Figure 5 is an exploded view of the transmission assembly of the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The hinge of the embodiment of the utility model like Figures 1-5 shown: including first fan wing (not shown in the drawing), second fan wing (not shown in the drawing) and hinge shaft 103 inserted between the two. The hinge shaft 103 is composed of the fixed first cylinder body 110, the second cylinder body 120 and the fixed cylinder body 130 sleeved outside the two, and the three are coaxially arranged. The transmission assembly 200 is arranged between the first cylinder body 110 and the fixed cylinder body 130, and the adjusting assembly 300 is arranged between the second cylinder body 120 and the fixed cylinder body 130. The transmission assembly 200 can realize mute transmission and lock drop transmission two modes by adjusting the switching nut 210, and the adjusting assembly 300 changes the pre-tightening force of the transmission spring 320 by adjusting the adjusting nut 310 to adjust the closing force.

[0023] The transmission assembly 200 comprises a switching nut 210 threadedly connected at the left end opening of the first cylinder body 110, and the right end of the switching nut 210 abuts against a switching oil cylinder 220. The switching oil cylinder 220 is a double-acting hydraulic cylinder comprising a shell 221 and a piston rod 222. One end of the piston rod 222 abuts against a thimble 230 through the piston rod 222, and the other end located in the shell 221 is a force receiving portion 223. The thimble 230 is composed of a connecting rod 231, a wrapping portion 232 and a thrust portion 233, and the wrapping portion 232 is sleeved outside the piston rod 222. The thimble 230 is provided with a through hole 234, and a transmission pin 240 penetrates through the through hole 234 and is clamped at both ends in a spiral transmission channel 250 of the first cylinder body 110 and a positioning groove 131 of the fixed cylinder body 130 respectively. The transmission channel 250 extends spirally along the inner wall of the first cylinder body 110, and the groove width of the positioning groove 131 is matched with the outer diameter of the transmission pin 240.

[0024] The adjusting nut 310 of the adjusting assembly 300 is threadedly connected at one end opening of the second cylinder body 120, and the other end abuts against a transmission spring 320. The left end of the transmission spring 320 abuts against the thrust portion 233 of the thimble 230 through a conduction block 330. A abutting block 340 is arranged between the transmission spring 320 and the adjusting nut 310 to facilitate the adjusting nut 310 to adjust the conduction torque of the transmission spring 320. The first cylinder body 110 and the second cylinder body 120 are detachably fixed through the threadedly connected portion 140 close to each other.

[0025] The inner wall of the shell 221 of the switching oil cylinder 220 is provided with a discharging groove 224. When the piston rod 222 is located at the middle part of the shell 221, it is in a mute mode, and at this time, the piston rod 222 and the shell 221 form a clearance fit. When the switching nut 210 is rotated to push the piston rod 222 to move to the position of the discharging groove 224, it is in a drop lock mode, and at this time, the fluid flows quickly through the discharging groove 224.

[0026] The working principle of the embodiment is as follows: when the switching nut 210 is in the initial position, the piston rod 222 is located in the middle part of the shell 221, the fluid in the switching oil cylinder 220 flows slowly through the gap to form damping, and the transmission pin 240 moves uniformly along the transmission channel 250 to realize the uniform closing of the first fan wing (not shown in the figure) and the second fan wing (not shown in the figure). Rotate the switching nut 210, move the piston rod 222 to the position of the discharging groove 224, and the fluid is quickly discharged through the discharging groove 224. The transmission pin 240 accelerates through the spiral section of the transmission channel 250 under the action of the spring 320 to realize the drop lock action. Rotating the adjusting nut 310 can compress the transmission spring 320 to change the thrust of the thimble 230, thereby adjusting the door closing force.

[0027] The above embodiment is only one of preferred specific embodiments of the present application, and common changes and replacements made by those skilled in the art within the technical scheme of the present application are included in the protection scope of the present application.

Claims

1. A hinge with an adjustable opening mode, comprising a first wing, a second wing, and a hinge shaft inserted between the first wing and the second wing for forming relative rotation between them, characterized in that: The hinge shaft includes a first cylinder, a second cylinder, and a fixed cylinder located between and sleeved on both cylinders. A transmission assembly is provided between the first cylinder and the fixed cylinder, and an adjustment assembly for adjusting the closing force is provided between the second cylinder and the fixed cylinder. The transmission assembly can switch between two transmission modes: silent transmission and locking transmission. When the transmission assembly is adjusted to the silent transmission mode, the first and second flaps close the door at a constant speed. When the transmission assembly is adjusted to the locking transmission mode, the first and second flaps accelerate to close the door at the closing position.

2. The hinge with adjustable opening mode according to claim 1, characterized in that: The transmission assembly includes a switching nut threadedly connected to the opening on the side of the first cylinder away from the fixed cylinder, a switching cylinder slidably disposed within the first cylinder and used to switch transmission modes after the switching nut rotates, a push pin, and a transmission pin. One end of the switching cylinder abuts against the switching nut, and the other end abuts against the push pin. The push pin is provided with a through hole for the transmission pin to pass through. The side of the first cylinder near the fixed cylinder is provided with a spiral transmission channel for the transmission pin to be inserted therein. The side of the fixed cylinder near the first cylinder is provided with a positioning groove for the transmission pin to be engaged. Both ends of the transmission pin pass through the transmission channel and are engaged in the positioning groove. The transmission pin moves within the transmission channel to form a relative rotation between the first cylinder and the fixed cylinder.

3. The hinge with adjustable door opening mode according to claim 2, characterized in that: The adjusting assembly includes an adjusting nut threadedly connected to the opening on the side of the second cylinder away from the fixed cylinder, and a transmission spring with one end abutting against the adjusting nut. A transmission block for transmitting torque is provided between the transmission spring and the ejector pin. When the adjusting nut rotates, it changes the transmission torque of the transmission spring.

4. The hinge with adjustable opening mode according to claim 3, characterized in that: The ejector pin includes a connecting rod, a wrapping part disposed on the side near the switching cylinder, and a thrust part disposed on the side near the transmission block. The switching cylinder is at least partially disposed within the wrapping part to prevent the torque transmitted by the switching cylinder from shifting. The outer diameter of the thrust part is larger than the outer diameter of the connecting rod.

5. The hinge with adjustable door opening mode according to claim 2, characterized in that: The switching cylinder includes a housing with one open end and fluid disposed therein, and a piston rod extending from the opening of the housing. The piston rod includes a load-bearing part located inside the housing and forming a clearance fit with the inner wall of the housing. An oil discharge groove is also provided on the inner wall of the housing. The switching nut drives the piston rod to move in an initial position inside the housing. When the switching cylinder is in the silent closing mode, the initial position of the piston rod forms a clearance fit with the inner wall of the housing. When the switching cylinder is in the locked closing mode, the initial position of the piston rod is located at the oil discharge groove.

6. The hinge with adjustable opening mode according to claim 1, characterized in that: The ends of the first and second cylinders that are close to each other are connected by threads.

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