Self-resetting hinge with multi-stage adjustment

Abstract

A self-resetting hinge with multi-stage adjustment, comprising a first hinge seat (100), a second hinge seat (200), and a connecting seat (300) arranged between the first hinge seat (100) and the second hinge seat (200), wherein the connecting seat (300) is rotatably connected to the first hinge seat (100) via a pivot shaft (400), and an automatic closing force for the pivot shaft (400) is provided by a compression spring (500) in the first hinge seat (100), characterized in that: a cavity (201) is provided in the second hinge seat (200) through which the connecting seat (300) is movably guided, so that the connecting seat (300) can perform a linear movement relative to the second hinge seat (200), wherein several arcuate limiting grooves (304) are distributed on the side walls of the connecting seat (300), and a limiting pin is provided on the second hinge seat (200). (700) is arranged in a movable manner,wherein the limiting pin (700) projects at least partially into the cavity (201) and interacts with the arc-shaped limiting grooves (304).

Description

Technical field

[0001] The present utility model relates to the technical field of hardware fittings, in particular a self-resetting hinge with multi-stage adjustment. State of the art

[0002] The hinge is an essential component that connects the door leaf to the door frame and allows the door leaf to rotate; in application scenarios such as gate doors, it is usually necessary for the hinge to have an automatic closing function to ensure that the door automatically returns to the closed position after use; existing self-resetting hinges for gate doors often use torsion spring structures to implement this function.

[0003] However, during actual installation and use, changes in the relative position between the door leaf and frame can occur due to installation tolerances between the door frame and door leaf, or due to wear and tear caused by long-term use. This can lead to insufficient closing, noise, or mutual interference. Currently, most self-resetting hinges available on the market have no or very limited adjustment options and cannot effectively and conveniently compensate for these positional deviations, causing inconvenience during installation and subsequent maintenance.

[0004] Therefore, there is an urgent need for a hinge that has a reliable self-resetting function and can also flexibly adjust the relative distance between the door leaf and the door frame. Content of the utility model

[0005] The purpose of the present utility model is to provide a self-resetting hinge with multi-stage adjustment in order to solve the problems raised in the above-mentioned prior art.

[0006] To achieve the aforementioned objective, the present utility model provides the following technical solution: A self-resetting hinge with multi-stage adjustment, comprising a first hinge seat, a second hinge seat, and a connecting seat arranged between the first and second hinge seats, wherein the connecting seat is rotatably connected to the first hinge seat via a pivot shaft, and an automatic closing force for the pivot shaft is provided by a compression spring in the first hinge seat; wherein a cavity is provided in the second hinge seat through which the connecting seat is movably guided, so that the connecting seat can perform a linear movement relative to the second hinge seat, wherein several arcuate limit grooves are distributed on the side walls of the connecting seat, and a limit pin is movably arranged on the second hinge seat, wherein the limit pin projects at least partially into the cavity and interacts with the arcuate limit grooves.The portion of the limiting pin protruding from the cavity can optionally engage with any arcuate limiting groove on the upper and lower side walls of the connecting seat, thus locking the connecting seat and the second hinge seat firmly in one of several preset fixed positions and thereby enabling multi-stage adjustment of the extension length. Furthermore, the first hinge seat is C-shaped or U-shaped, and its two ends are each firmly connected to the two ends of the pivot shaft, forming a stable rotary support structure.

[0007] Furthermore, the second hinge seat comprises a symmetrically arranged left partial seat and a right partial seat, both connected by fasteners. This not only facilitates the encapsulation of the connecting seat in its cavity and simplifies the assembly process, but also allows, by disassembling the left partial seat and the right partial seat, the limiting pins to be manually removed from the currently engaged arcuate limiting groove, the connecting seat to be moved linearly to the target position, the cylindrical side surface of the limiting pins to engage with the target limiting groove, and finally the left and right partial seats to be reassembled to complete the locking mechanism.

[0008] Furthermore, at least one rotary chamber for the rotatable arrangement of the rotating shaft and a spring installation chamber for the linear movement of the compression spring are provided in the connecting seat, wherein a first cam is arranged on the rotating shaft, with one end of the compression spring bearing against the first cam and the other end bearing against the connecting seat, wherein the compression spring is compressed by rotating the first cam in order to store energy and to realize an automatic return.

[0009] Furthermore, a piston element is arranged in the spring installation chamber, the piston element being placed on the compression spring and positioned between the rotating shaft and the compression spring, which not only increases the stability of the compression spring during movement and prevents its pendulum motion, but also extends its service life.

[0010] Furthermore, a damper mounting chamber is provided in the connecting seat, and a damper is arranged in this chamber. A second cam is arranged on the pivot shaft, with one end of the damper resting against the second cam and the other end resting against the connecting seat. The interaction of the damper and the second cam cushions the door closing process, resulting in a smooth closing action.

[0011] Furthermore, an end cap is arranged at the end of the connecting seat, the end cap being mounted on the connecting seat by means of a thread and the end cap resting against the ends of the compression spring and damper facing away from the rotating shaft in order to seal the chambers and provide a preload force adjustment function.

[0012] In comparison to the prior art, the present technical solution offers a self-resetting hinge with multi-stage adjustment with the following advantageous effects: The linear movement of the connecting seat in the cavity of the second hinge seat, combined with the engagement of the limiting pin in various arcuate limiting grooves, not only achieves multi-stage adjustment of the relative distance between the door leaf and the door frame to effectively compensate for installation tolerances and structural deformations, but also, through the smooth interaction between the arcuate limiting grooves and the cylindrical side surface of the limiting pin, which has a self-guiding effect, results in a good adjustment feel and makes the position locking more stable and reliable. Brief description of the drawings Fig. This is a perspective view of the present utility model. Fig. This is a top view of the present utility model. Fig. is a sectional view along AA in Fig. . Fig. This is a front view of the present utility model. Fig. is a sectional view along BB in Fig. . Fig. is a section view along CC in Fig. . Fig. This is an exploded view of the present utility model. Explanation of reference symbols in the illustrations:

[0013] 100, first hinge seat; 200, second hinge seat; 201, cavity; 210, left partial seat; 220, right partial seat; 300, connecting seat; 301, rotating chamber; 302, spring mounting chamber; 303, damper mounting chamber; 304, arcuate limit groove; 400, rotating shaft; 401, first cam; 402, second cam; 500, compression spring; 600, damper; 700, limiting pin; 800, piston element; 900, end cap. Detailed description of the embodiments

[0014] The technical solution of the embodiments of the present utility model is described in detail below in conjunction with the drawings.

[0015] With reference to the Fig. A self-resetting hinge with multi-stage adjustment mainly comprises a first hinge seat 100, a second hinge seat 200 and a connecting seat 300;

[0016] The first hinge seat 100 is usually attached to the door leaf (not shown in the illustrations) by means of screws; it has a C-shaped or U-shaped structure, with its two ends being firmly connected to the two ends of the pivot shaft 400 via bearings or bearing bushings, providing a stable and robust pivot point for the entire hinge;

[0017] The second hinge seat 200 is attached to the door frame (not shown in the figures) by means of screws; preferably it is composed of a symmetrical left partial seat 210 and a right partial seat 220, which are assembled by means of screws and together enclose a cavity 201. Corresponding insertion holes (not labeled in the figures) are provided on the upper and lower side walls of the cavity 201.

[0018] The connecting seat 300, as a central movement and functional component, is guided through the cavity 201 of the second hinge seat 200 and can slide linearly along its axis; several functional chambers are integrated inside the connecting seat 300: including a rotary chamber 301 through which the rotary shaft 400 is guided, a spring mounting chamber 302 for receiving the compression spring 500, and optionally a damper mounting chamber 303 for receiving a damper 600; specifically, symmetrically arcuate limit grooves 304, representing different positions, are incorporated on the upper and lower outer walls of the connecting seat 300 along its axis.

[0019] The multi-stage adjustment function of the self-resetting hinge is primarily used during initial installation or when major maintenance is required. Adjusting the distance between the door leaf and the door frame involves the following steps: 1. First, the fastening elements connecting the left partial seat 210 and the right partial seat 220 of the second hinge seat 200 are disassembled and both are separated; 2. Due to the removal of the restriction by the partial seats, the limiting pins 700 are in an operable state; the operator can manually remove the upper and lower limiting pins 700 from the currently engaged arcuate limiting grooves 304; 3. The connecting seat 300 is moved directly in a linear fashion, so that it extends or retracts relative to the second hinge seat 200; 4. When the connecting seat 300 has reached the target position, i.e. when the target limit grooves 304 on its upper and lower side walls are aligned with the upper and lower insertion holes, the limit pins 700 are inserted into the insertion holes so that their cylindrical side surfaces snap into the target limit grooves 304; 5. Finally, the left seat section 210 and the right seat section 220 are reassembled and secured, thus completing the adjustment.

[0020] After the adjustment is complete, the entire hinge in the locked state forms an extremely rigid unit through the mechanical locking between the cylindrical side surfaces of the limiting pins 700 and the arcuate limiting grooves 304 in combination with the tight enclosure of the connecting seat 300 and the limiting pins 700 by the left and right partial seats, thereby preventing unintentional displacements due to vibrations or shocks during use and ensuring stability during long-term use.

[0021] The self-resetting function is primarily achieved by the cam and the compression spring 500; a first cam 401 is fixedly mounted on the rotary shaft 400, the compression spring 500 is installed in the spring mounting chamber 302, with one end bearing directly or via the piston element 800 against the first cam 401 and the other end bearing against the end cap 900; when the door leaf is opened, the rotary shaft 400 rotates with it and causes the first cam 401 to rotate, thereby compressing the compression spring 500 and storing potential energy; when the user releases the door leaf, the compressed compression spring 500 releases the potential energy, pushes the first cam 401 and causes the rotary shaft 400 to rotate in the reverse direction, thus automatically returning the door leaf to the closed position.

[0022] To achieve an optimized door closing experience, the present utility model additionally integrates a damping buffer function; a second cam 402 is also attached to the rotary shaft 400, the damper 600 is installed in the damper mounting chamber 303, with its end resting against the second cam 402; in the final phase of the door closing process, the contour of the second cam 402 compresses the piston rod of the damper 600, the resulting damping force effectively slowing down the door closing speed.

[0023] The end cap 900 is screwed into the end of the connecting seat 300 by means of a thread, whereby the end cap 900 not only serves to seal the inner chambers and facilitates the assembly and disassembly of the compression spring 500 and the damper 600, but also allows a fine adjustment of the preload force on the compression spring 500 and the damper 600 by screwing it in or out, thereby enabling the precise adjustment of the size of the door closing force and the strength of the damping effect within a certain range to meet different usage scenarios and user preferences.

Claims

[1] Self-resetting hinge with multi-stage adjustment, comprising a first hinge seat (100), a second hinge seat (200) and a connecting seat (300) arranged between the first hinge seat (100) and the second hinge seat (200), wherein the connecting seat (300) is rotatably connected to the first hinge seat (100) via a pivot shaft (400) and an automatic closing force for the pivot shaft (400) is provided by a compression spring (500) in the first hinge seat (100), characterized by, that: a cavity (201) is provided in the second hinge seat (200) through which the connecting seat (300) is movably guided, so that the connecting seat (300) can perform a linear movement relative to the second hinge seat (200), wherein several arcuate limiting grooves (304) are arranged distributed on the side walls of the connecting seat (300), a limiting pin (700) is movably arranged on the second hinge seat (200), wherein the limiting pin (700) projects at least partially into the cavity (201) and interacts with the arcuate limiting grooves (304). [2] Self-resetting hinge with multi-stage adjustment according to claim 1, characterized by , that: the first hinge seat (100) is C-shaped or U-shaped, and the two ends of the first hinge seat (100) are each firmly connected to the two ends of the rotating shaft (400). [3] Self-resetting hinge with multi-stage adjustment according to claim 1, characterized by , that: the second hinge seat (200) comprises a symmetrically arranged left partial seat (210) and a right partial seat (220), wherein the left partial seat (210) and the right partial seat (220) are firmly connected to each other by means of screws. [4] Self-resetting hinge with multi-stage adjustment according to claim 1, characterized by , that: in the connecting seat (300) at least one rotary chamber (301) for the rotatable arrangement of the rotary shaft (400) and a spring installation chamber (302) for the linear movement of the compression spring (500) are provided, wherein a first cam (401) is arranged on the rotary shaft (400), wherein one end of the compression spring (500) rests on the first cam (401) and the other end rests on the connecting seat (300). [5] Self-resetting hinge with multi-stage adjustment according to claim 4, characterized by, that: in the spring installation chamber (302) a piston element (800) is further arranged, wherein the piston element (800) is arranged between the rotating shaft (400) and the compression spring (500) and the piston element (800) is placed on the compression spring (500). [6] Self-resetting hinge with multi-stage adjustment according to one of claims 4 or 5, characterized by , that: a damper installation chamber (303) is further provided in the connecting seat (300), wherein a damper (600) is arranged in the damper installation chamber (303), a second cam (402) is arranged on the rotating shaft (400), wherein one end of the damper (600) rests on the second cam (402) and the other end rests on the connecting seat (300). [7] Self-resetting hinge with multi-stage adjustment according to claim 6, characterized by, that: an end cap (900) is arranged at the end of the connecting seat (300), wherein the end cap (900) is mounted on the connecting seat (300) by means of a thread and the end cap (900) rests against the ends of the compression spring (500) and the damper (600) facing away from the rotating shaft (400).

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