CN115653424B - Concealed hinge for door - Google Patents
Concealed hinge for door Download PDFInfo
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- CN115653424B CN115653424B CN202211366067.8A CN202211366067A CN115653424B CN 115653424 B CN115653424 B CN 115653424B CN 202211366067 A CN202211366067 A CN 202211366067A CN 115653424 B CN115653424 B CN 115653424B
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- connecting arm
- hinge
- shell
- reset spring
- hinged
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Abstract
The application relates to the technical field of door hardware equipment, and discloses a hidden door hinge, which comprises: the first shell and the second shell are hollow structures with one side open, and the two openings are opposite when the hinge is closed; the linkage assembly is hinged in the first shell and the second shell respectively at two ends, and is provided with a first connecting arm with one end hinged in the first shell, and the first connecting arm rotates in opposite directions when the hinge is opened and closed respectively; and a reset spring, which is arranged in the first casing, one end of the reset spring is connected with the first connecting arm, the first connecting arm rotates and drives the reset spring to store force in the hinge opening process, and the reset spring drives the first connecting arm to rotate towards the direction of closing the hinge after the hinge loses the external force for opening the hinge. This stealthy hinge for door only sets up reset spring through improving interlock subassembly and in a casing, can realize the automatic closure function of hinge with comparatively simple structure to reduce the cost of manufacture of hinge.
Description
Technical Field
The application relates to the technical field of door hardware equipment, in particular to a hidden door hinge.
Background
The invisible door is a door without a door frame and a handle outside. The shape, size and style of the door are not easy to be directly observed after the door is closed. Since no handle is provided, a self-closing mechanism is usually provided on the hinge in order to facilitate closing the door. However, the conventional self-closing mechanism is relatively complex in structure and relatively high in manufacturing cost.
Disclosure of Invention
The present application has been made to solve the above-mentioned problems, and an object of the present application is to provide a concealed door hinge having a self-closing mechanism with a relatively simple structure, which can reduce manufacturing costs.
In order to achieve the above object, the present application provides a concealed door hinge comprising: the first shell and the second shell are hollow structures with one side open, and the two openings are opposite when the hinge is closed; the linkage assembly is hinged in the first shell and the second shell respectively at two ends, and is provided with a first connecting arm with one end hinged in the first shell, and the first connecting arm rotates in opposite directions when the hinge is opened and closed respectively; and a reset spring, which is arranged in the first casing, one end of the reset spring is connected with the first connecting arm, the first connecting arm rotates and drives the reset spring to store force in the hinge opening process, and the reset spring drives the first connecting arm to rotate towards the direction of closing the hinge after the hinge loses the external force for opening the hinge.
Preferably, an adjusting component is further disposed in the first casing, and the adjusting component includes: the adjusting screw is rotationally arranged in the first shell; the sliding block is in threaded connection with the adjusting screw, and the outer side of the sliding block is arranged in the first shell in a sliding way; the other end of the reset spring is connected to the sliding block, and when the adjusting screw rotates, the sliding block can move along the length direction of the adjusting screw and drive the other end of the reset spring to move so as to adjust the compression degree of the reset spring.
Preferably, the adjusting assembly further comprises an adjusting seat fixed in the first casing, the adjusting screw penetrates through the center of the adjusting seat, the adjusting screw is provided with a limiting piece with the side face abutting on the adjusting seat, the middle of the adjusting seat is provided with a support seat positioned on two sides of the adjusting screw, the support seat is provided with a sliding groove parallel to the adjusting screw, and the side face of the sliding block is provided with a limiting part which is assembled in the sliding groove in a sliding mode.
Preferably, two ends in the first casing are respectively provided with a first connecting arm, and the side surface of the first connecting arm is provided with a limit groove; the reset spring is of a double torsion spring structure, torsion arms at two ends of the reset spring are respectively inserted into the limiting grooves, and the torsion arms in the middle of the reset spring are abutted to the sliding block.
Preferably, a first pin shaft is arranged in the first casing along the length direction, one end of the first connecting arm is sleeved on the first pin shaft, and the reset spring is sleeved on the first pin shaft.
Preferably, the linkage assembly further comprises: the first connecting arm is hinged to one side, close to the opening, of the first casing, the second connecting arm is hinged to the other end of the second casing, the second connecting arm is hinged to the other end of the first connecting arm, one end of the third connecting arm is hinged to one side, far away from the opening, of the second casing, one end of the fourth connecting arm is hinged to one side, close to the opening, of the first casing, the other end of the fourth connecting arm is hinged to the other end, the middle of the third connecting arm and the middle of the second connecting arm.
Preferably, a first machine seat is slidably arranged in the first machine shell, and a second machine seat is slidably arranged in the second machine shell; two ends of the linkage assembly are respectively hinged to the first base and the second base; the adjusting component is fixed on the first base.
Preferably, the first stand is further provided with a buffer assembly, and the buffer assembly includes: the damper is fixed on the first base; a compression part which is arranged on the first base in a sliding way, one end of the compression part is provided with a pressing plate which is abutted against a piston rod of the damper, and one side of the compression part is provided with a rack; the driving part is arranged on the first connecting arm, and a plurality of teeth capable of being meshed with the racks are arranged on the periphery of the driving part; when the hinge reaches a preset angle in the closing process, the teeth are meshed with the racks and drive the compression part to slide so as to compress the piston rod.
Preferably, the rack comprises first meshing teeth and second meshing teeth with a length longer than that of the first meshing teeth which are arranged at intervals, and a meshing part is formed between the adjacent second meshing teeth; the periphery of the driving part is provided with a first tooth and a second tooth with the length being greater than that of the first tooth, the first tooth can rotate in the meshing part and is contacted with second meshing teeth on two adjacent sides, and the second tooth can be meshed between the first meshing tooth and the second meshing tooth.
According to the above description and practice, the invisible door hinge of the application is characterized in that the first connecting arm capable of rotating in the opposite direction when the hinge is opened and closed is arranged in the first casing, the reset spring with one end connected to the first connecting arm is arranged in the first casing, the reset spring is pressed and accumulated when the hinge is opened, and after the hinge is opened and the external force is removed, the reset spring can drive the first connecting arm to rotate in the direction of closing the hinge, and finally the two casings of the hinge are closed together through the linkage assembly. Compared with the traditional hinge, the invisible hinge for the door can realize the automatic closing function of the hinge with a simpler structure only by improving the linkage assembly and arranging the reset spring in one shell, thereby reducing the manufacturing cost of the hinge. In addition, the reset spring is arranged in the first shell, is not easy to be perceived by a user, and is more suitable for the invisible door.
Drawings
Fig. 1 is a schematic view showing a structure of a hinge for a hidden door according to an embodiment of the present application in an opened state.
Fig. 2a and 2b are schematic perspective sectional views of a hinge for a hidden door according to an embodiment of the present application in an opened and closed state, respectively.
Fig. 3a and 3b are schematic views of structures in a first housing according to an embodiment of the present application at different viewing angles.
Fig. 4 is a schematic structural view of a first connecting arm according to an embodiment of the present application.
Fig. 5 is a schematic structural view of a compression portion according to an embodiment of the present application.
The reference numerals in the figures are:
11. first housing 12, second housing 13, first base
14. A second stand 21, a first connecting arm 22 and a second connecting arm
23. Third connecting arm 24, fourth connecting arm 25 and first pin shaft
26. Shaft sleeve 27, limit groove 31 and return spring
32. Adjusting screw 33, sliding block 34 and adjusting seat
35. Support 36, limit piece 37, limit part
38. Chute 41, damper 411, piston rod
42. Compression section 43, driving section 421, and platen
422. Rack 51, first tooth 52, second tooth
61. First engagement tooth 62, second engagement tooth 63, engagement portion
Detailed Description
Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. In the present disclosure, the terms "comprising," "including," "having," "disposed in" and "having" are intended to be open-ended and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like, are used merely as labels, and do not limit the number or order of their objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In this embodiment, a hidden door hinge is disclosed, and fig. 1 shows a structure of the hidden door hinge in an opened state; fig. 2a shows a perspective sectional structure of the invisible door hinge in an opened state; FIG. 2b shows a perspective cross-sectional view of the invisible door hinge in a closed state, wherein the structures of the first housing and the second housing are omitted for displaying more internal structures; fig. 3a and 3b show the structure and connection relationship of each component in the first casing of the invisible door hinge under two different viewing angles, wherein in fig. 3b, the structure of the first stand is omitted in order to show the connection relationship between the driving part and the compression part; fig. 4 shows the structure of the first connecting arm; fig. 5 shows the structure of the compression portion.
Referring to fig. 1 to 5, the invisible door hinge includes a first housing 11, a second housing 12, a linkage assembly and a return spring 31. The first casing 11 and the second casing 12 are connected together through a linkage assembly, and when the door is used, the two casings are respectively fixed on the door frame and the door leaf to realize the connection of the door leaf and the door frame. The first housing 11 and the second housing 12 are hollow structures with one side open, see fig. 1 for details, and are in an elongated structure in this embodiment, and when the hinge is closed, the openings of the two housings face each other. In this embodiment, the first housing 11 is mounted on the door frame, and the second housing 12 is mounted on the door leaf, and the respective members in the hinge and the connection relationship thereof will be described, and accordingly, the return spring 31, the adjusting unit and the buffer unit described below are provided in the first housing 11 on the door frame. In other embodiments, of course, the return spring 31, the adjusting assembly and the damping assembly can also be provided in the second housing 12 and mounted on the door leaf, as well as perform the corresponding functions.
The linkage assembly is formed by combining a plurality of connecting arms, and two ends of the linkage assembly are respectively hinged in the first shell 11 and the second shell 12 so as to realize the action of opening and closing the hinge. One end of the first connecting arm 21 is hinged in the first casing 11, and when the hinge is opened or closed, the first connecting arm 21 rotates around the hinge shaft in opposite directions. For example, in fig. 2a and 2b, the hinge rotates counterclockwise about the hinge axis from the open to the closed position, gradually coming to rest on the bottom surface of the first housing 11 from approximately perpendicular to the bottom surface of the first housing 11 to the side; conversely, the first connecting arm 21 rotates clockwise about the hinge axis from closing to opening.
The return spring 31 is provided in the first housing 11, and may be a general compression spring or a torsion spring, one end of which is connected to the first connecting arm 21, and the other end of which is fixed in the first housing 11. In the process of opening the hinge, the first connecting arm 21 rotates clockwise in fig. 2b and drives one end of the return spring 31 to move, so that the return spring 31 is pressed to store force, and after the hinge loses the external force for opening the hinge, the return spring 31 drives the first connecting arm 21 to rotate anticlockwise in fig. 2a, so that the hinge is closed.
In the hidden door hinge according to the embodiment, the first connecting arm 21 capable of rotating in the opposite direction when the hinge is opened and closed is arranged in the first casing 11, the reset spring 31 with one end connected to the first connecting arm 21 is arranged in the first casing 11, when the hinge is opened, the reset spring 31 is pressed to store the force, after the hinge is opened and the external force is lost, the reset spring 31 can drive the first connecting arm 21 to rotate in the direction of closing the hinge, and finally, the two casings of the hinge are closed together through the linkage assembly. Compared with the traditional hinge, the invisible door hinge can realize the automatic closing function of the hinge with a simpler structure only by improving the linkage assembly and arranging the reset spring 31 in one shell, thereby reducing the manufacturing cost of the hinge. In addition, the return spring 31 is disposed in the first housing 11, and is not easily perceived by a user, and is more adapted to the hidden door.
In this embodiment, the linkage assembly is provided with four connecting arms in total, as shown in fig. 1 to 2b in detail, wherein one end of the first connecting arm 21 is hinged on one side of the first housing 11 far away from the opening, and the other end of the first connecting arm can extend to one side of the opening of the first housing 11 when rotating, so that the first connecting arm can rotate in the opposite direction in the first housing 11 when opening and closing the page; one end of the second connecting arm 22 is hinged to one side of the second casing 12 close to the opening, and the other end of the second connecting arm 22 is hinged to one end of the first connecting arm 21 close to the opening of the first casing 11, and can be linked together with the first connecting arm 21; one end of the third connecting arm 23 is hinged to the side of the second casing 12 far from the opening, and the other end of the third connecting arm can extend to the opening side of the second casing 12 when rotating, and is similar to the first connecting arm 21, and can rotate in the opposite direction in the second casing 12 when opening and closing the hinge; the fourth connecting arm 24 is similar to the second connecting arm 22 in arrangement, one end of the fourth connecting arm 24 is hinged to one side of the first casing 11 close to the opening, and the other end of the fourth connecting arm 24 is hinged to one end of the third connecting arm 23 close to the opening of the second casing 12, and can be linked together with the third connecting arm 23; while the middle of the second connecting arm 22 is hinged to the middle of the fourth connecting arm 24. The structure can realize 180-degree opening and closing of the hinge.
In the prior art, there are various linkage assemblies capable of realizing the connection of two housings of the hinge, and the first connecting arm 21 provided in the first housing 11 and rotating in opposite directions when opening and closing the hinge is indispensable in the present application, so in other embodiments, the user can change the structure and the number of other connecting arms in the linkage assembly according to the actual requirement, and the opening and closing of the page can be realized as well. For example, the number of the connecting arms is reduced, the opening and closing range of the hinge is only 0-90 degrees, and the automatic closing of the hinge can be realized by matching with the reset spring 31.
Further, in this embodiment, the second connecting arm 22 and the fourth connecting arm 24 are both in a bent structure, so that only part of the structure is exposed after the hinge is completely opened, and meanwhile, the hinge can be located in two housings after the hinge is completely closed, thereby realizing a better "invisible" effect. The connecting arms are hinged together through a pin shaft, one end of a third connecting arm 23 is hinged in the second casing 12 through a pin shaft, and one end of the first connecting arm 21 is hinged in the first casing 11 through a first pin shaft 25. In order to make each connecting arm rotate more stably, a shaft sleeve 26 is further arranged at the connecting position of the connecting arm and the pin shaft, and the shaft sleeve 26 is positioned between the pin shaft and the connecting arm, so that the buffer and lubrication effects can be achieved, and the rotation of each connecting arm is quieter and more stable.
In addition, in this embodiment, an adjusting component capable of adjusting the elastic force of the return spring 31 is further provided, and the hinge for the invisible door can be suitable for invisible doors with different weights by adjusting the elastic force of the return spring 31. For example, in a concealed door with a large weight, the elastic force of the return spring 31 can be increased to drive the door leaf with a large weight to close. Specifically, the adjusting assembly includes an adjusting screw 32 and a slider 33, the adjusting screw 32 is rotatably provided in the first housing 11, the slider 33 is screwed to the adjusting screw 32, and the outside is slidably provided in the first housing 11, and the other end of the return spring 31 is connected to the slider 33. Since the adjusting screw 32 can only rotate in the first housing 11, when the adjusting screw 32 is rotated, the sliding block 33 moves along the length direction of the adjusting screw 32 and drives the other end of the return spring 31 to move, thereby adjusting the compression degree of the return spring 31 and finally realizing the adjustment of the elastic force of the return spring 31.
Further, in this embodiment, the adjusting assembly further includes an adjusting seat 34 fixed in the first housing 11, the adjusting screw 32 is threaded in the center of the adjusting seat 34, a limiting piece 36 with a side abutting on the adjusting seat 34 is clamped on the adjusting screw 32, the limiting piece 36 and the head of one end of the adjusting screw 32 are respectively located at two ends of the adjusting seat 34, and can form axial limiting on the adjusting screw 32, so that the adjusting screw 32 can only rotate on the adjusting seat 34 and cannot move along the axial direction. In addition, the middle part of the adjusting seat 34 is provided with a support 35 positioned at two sides of the adjusting screw 32, the support 35 is provided with a chute 38 parallel to the adjusting screw 32, and the side surface of the sliding block 33 is provided with a limit part 37 which is slidingly assembled in the chute 38, so that when the adjusting screw 32 rotates, the sliding block 33 slides along the chute 38 due to the threaded connection of the middle part of the sliding block 33 and the adjusting screw 32, thereby realizing the adjustment of the elasticity of the return spring 31.
In this embodiment, the return spring 31 is a torsion spring, one end of which is connected to the first connecting arm 21, and the other end of which is connected to the slider 33, so that the size of torsion of the torsion spring can be adjusted by the slider 33 at one end. In addition, the first connecting arm 21 is rotated, so that the elastic force of the torsion spring can be adjusted.
Specifically, in this embodiment, one first connecting arm 21 is provided at each end of the first housing 11, so that both housings of the hinge can be opened and closed uniformly. Meanwhile, a limit groove 27 is formed on the side surface of the first connecting arm 21, and accordingly, the return spring 31 adopts a double torsion spring structure, as shown in fig. 3a and 3b in detail, the double torsion spring structure can be equivalent to that of arranging two torsion springs side by side and connecting one torsion arm together, so that the structure with torsion arms at two ends and torsion arms in the middle is formed. The torsion arms at two ends are respectively inserted into the limit grooves 27 at the side surfaces of the first connecting arm 21, and the middle torsion arm is abutted against the sliding block 33. This structure can increase the elastic force of the return spring 31 and also can move the two first connecting arms 21 in synchronization. In addition, in this embodiment, the return spring 31 and the first connecting arm 21 are both sleeved on the first pin shaft 25, so that the stability of the return spring 31 can be increased, and the number of parts in the first housing 11 can not be increased.
Further, in this embodiment, a first housing 13 is slidably provided in the first housing 11, and both ends of the first housing 13 are bolted to the first housing 11; a second machine seat 14 is arranged in the second machine shell 12 in a sliding manner, and two ends of the second machine seat 14 are connected to the second machine shell 12 through bolts; the two ends of the linkage assembly are respectively hinged on the first machine base 13 and the second machine base 14, and the adjusting assembly is fixed on the first machine base 13. Through setting up first frame 13 and second frame 14, can install interlock subassembly, reset spring 31 and adjusting part outside the casing after, whole sliding fit is in the casing, fixes again, avoids installing the part in the narrow and small space of casing, can improve assembly efficiency.
Since the return spring 31 continues to apply force to the first connecting arm 21 after the hinge is opened, it is easy to get faster in the process of closing the hinge, resulting in loud door leaf closing and easy to get a pinch accident. In this embodiment, a damper assembly is also provided to reduce the rate at which the hinge closes, so that the hinge can close smoothly at a lower rate.
Specifically, the shock absorbing assembly includes a damper 41, a compression portion 42, and a driving portion 43. The damper 41 is fixedly arranged on the first stand 13, and comprises a main body and a piston rod 411 arranged in the main body, when the piston rod 411 is stressed, certain resistance can be provided for the outside, the resistance is related to the moving speed and the acceleration of the piston rod 411, and the larger the acceleration and the speed, the larger the resistance. The compression portion 42 is an L-shaped folded plate slidably disposed on the first base 13, one end is a pressing plate 421 extending toward the damper 41 and abutting against the piston rod 411, and a rack 422 is disposed on a side surface of the compression portion 42 for connection with the driving portion 43. The sliding connection of the compression part 42 with the first housing 13 can be realized in the form of a limit part 37 and a chute 38. The driving part 43 is provided on the first connecting arm 21, and a plurality of teeth capable of meshing with the rack 422 are provided on the outer periphery thereof. When the hinge reaches a preset angle in the closing process, the teeth are meshed with the racks 422 and drive the compression part 42 to slide so as to compress the piston rod 411, at this time, the acceleration of the piston rod 411 is instantaneously increased, and a larger resistance can be provided, so that the rotation speed of the first connecting arm 21 is reduced, and finally the hinge closing is realized at a lower speed and stably.
In this embodiment, the driving part 43 and the first connecting arm 21 are integrally formed and are similarly sleeved on the first pin 25, so that the driving part 43 has only a degree of freedom of rotation during the opening and closing of the hinge. The rack 422 of the compression portion 42 includes first engaging teeth 61 and second engaging teeth 62 having a length longer than the first engaging teeth 61 which are disposed at intervals, and an engaging portion 63 is formed between the adjacent second engaging teeth 62; the driving portion 43 is provided at its outer periphery with a first tooth 51 and a second tooth 52 having a length longer than that of the first tooth 51, the first tooth 51 being rotatable in the engaged portion and being in contact with second engaging teeth 62 on both sides adjacent to each other, the second tooth 52 being engageable between the first engaging teeth 61 and the second engaging teeth 62.
Referring to fig. 3a to 5 in detail, in this embodiment, the rack 422 comprises two first engagement teeth 61 and one second engagement tooth 62, and the driving portion 43 is provided at its periphery with one second tooth 52 and two first teeth 51. When the driving portion 43 is connected to the compression portion 42, the first teeth 51 move within the engaging portion 63, and the engaging range of the first teeth 51 on the driving portion 43 is greatly increased when the first teeth 51 are engaged with the rack 422, compared with the configuration of the rack 422 in which the engaging portion 63 is not provided. The resetting of the compression portion 42 can be allowed without special precision, the risk of jamming when the teeth are engaged with the rack 422 is reduced, and the reliability of the product is improved. For example, when the engaging portion is not provided, if the driving portion 43 contacts the compression portion 42, the first teeth 51 abut against the end surface of the second engaging teeth 62, and the driving portion 43 is easily locked; in this case, the driving portion 43 can be rotated continuously after the engagement portion 63 is provided, the first teeth 51 are brought into contact with the adjacent first teeth 61, and the position of the compression portion 42 is adjusted so that the second teeth 52 can be engaged between the first teeth 61 and the second teeth 62, thereby stably connecting the driving portion 43 and the compression portion 42.
By adjusting the positions of the first teeth 51 and the second teeth 52 on the periphery of the driving part 43, the two teeth can be controlled to be meshed with the rack 422 at the position where the first connecting arm 21 rotates by a preset angle, so that the damper 41 can be triggered to provide resistance outwards when the hinge is closed to the preset angle. When the door is applied to the invisible door, the buffer component is triggered to reduce the speed of closing the door only when the door leaf is closed to a preset angle, so that the door can be closed smoothly at a small speed before being completely closed. The method for adjusting the preset angle is provided, and a manufacturer can set the angle according to actual requirements.
In other embodiments, the sizes and the numbers of the first teeth 51, the second teeth 52, the first engaging teeth 61, and the second engaging teeth 62 may be changed according to the actual needs, and it is only necessary to ensure that the first teeth 51 and the second teeth 52 are spaced apart, the first engaging teeth 61 and the second engaging teeth 62 are spaced apart, and the engaging portions 63 are formed, so that the connection between the driving portion 43 and the compressing portion 42 is more stable when the size is smaller and the number is increased.
In this embodiment, two buffer units are provided at both ends of the first housing 11, and each buffer unit is linked with one first link arm 21, so that resistance can be uniformly applied to the linked units, and the closing speed of the hinge can be delayed.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A concealed door hinge, comprising:
the first shell and the second shell are hollow structures with one side open, and the two openings are opposite when the hinge is closed;
the linkage assembly is hinged in the first shell and the second shell respectively at two ends, and is provided with a first connecting arm with one end hinged in the first shell, and the first connecting arm rotates in opposite directions when the hinge is opened and closed respectively;
the reset spring is arranged in the first shell, one end of the reset spring is connected with the first connecting arm, the first connecting arm rotates and drives the reset spring to store force in the hinge opening process, and the reset spring drives the first connecting arm to rotate in the direction of closing the hinge after the hinge loses the external force for opening the hinge;
the buffer assembly is arranged in the first shell, and comprises: the damper is fixed on the first shell; the compression part is arranged on the first shell in a sliding way, one end of the compression part is provided with a pressing plate which is abutted against a piston rod of the damper, one side of the compression part is provided with a rack, the rack comprises first meshing teeth and second meshing teeth, the length of the second meshing teeth is greater than that of the first meshing teeth, the first meshing teeth are arranged at intervals, and a meshing part is formed between the adjacent second meshing teeth; the driving part is arranged on the first connecting arm, the periphery of the driving part is provided with a plurality of teeth which can be meshed with the rack, the driving part comprises a first tooth and a second tooth with the length longer than that of the first tooth, the first tooth can rotate in the meshing part and is contacted with the second meshing teeth on two adjacent sides, and the second tooth can be meshed between the first meshing tooth and the second meshing tooth; when the hinge reaches a preset angle in the closing process, the teeth are meshed with the racks and drive the compression part to slide so as to compress the piston rod.
2. The invisible door hinge according to claim 1, wherein,
still be equipped with adjusting part in the first casing, adjusting part includes:
the adjusting screw is rotationally arranged in the first shell;
the sliding block is in threaded connection with the adjusting screw, and the outer side of the sliding block is arranged in the first shell in a sliding way; wherein the method comprises the steps of
The other end of the reset spring is connected to the sliding block, and when the adjusting screw rotates, the sliding block can move along the length direction of the adjusting screw and drive the other end of the reset spring to move so as to adjust the compression degree of the reset spring.
3. The invisible door hinge according to claim 2, wherein,
the adjusting assembly further comprises an adjusting seat fixed in the first casing, the adjusting screw penetrates through the center of the adjusting seat, the adjusting screw is provided with a limiting piece with the side face abutting on the adjusting seat, the middle of the adjusting seat is provided with a support seat positioned on two sides of the adjusting screw, the support seat is provided with a sliding groove parallel to the adjusting screw, and the side face of the sliding block is provided with a limiting part which is slidably assembled in the sliding groove.
4. The invisible door hinge according to claim 2, wherein,
two ends in the first shell are respectively provided with a first connecting arm, and the side surface of the first connecting arm is provided with a limit groove;
the reset spring is of a double torsion spring structure, torsion arms at two ends of the reset spring are respectively inserted into the limiting grooves, and the torsion arms in the middle of the reset spring are abutted to the sliding block.
5. The invisible door hinge according to claim 4, wherein,
the first casing is internally provided with a first pin shaft along the length direction, one end of the first connecting arm is sleeved on the first pin shaft, and the reset spring is sleeved on the first pin shaft.
6. The invisible door hinge according to any one of claims 1 to 5, wherein,
the linkage assembly further comprises: a second connecting arm, a third connecting arm and a fourth connecting arm, wherein
One end of the second connecting arm is hinged at one side of the second casing close to the opening, the other end of the second connecting arm is hinged at the other end of the first connecting arm,
one end of the third connecting arm is hinged on one side of the second casing far away from the opening,
one end of the fourth connecting arm is hinged to one side, close to the opening, of the first shell, the other end of the fourth connecting arm is hinged to the other end of the third connecting arm, and the middle of the fourth connecting arm is hinged to the middle of the second connecting arm.
7. The invisible door hinge according to any one of claims 2 to 5, wherein,
a first machine seat is arranged in the first machine shell in a sliding manner, and a second machine seat is arranged in the second machine shell in a sliding manner;
two ends of the linkage assembly are respectively hinged to the first base and the second base;
the adjusting component is fixed on the first base.
8. The invisible door hinge according to claim 7, wherein,
the damper is fixed on the first base, and the compressor is slidably arranged on the first base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211366067.8A CN115653424B (en) | 2022-10-31 | 2022-10-31 | Concealed hinge for door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211366067.8A CN115653424B (en) | 2022-10-31 | 2022-10-31 | Concealed hinge for door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115653424A CN115653424A (en) | 2023-01-31 |
| CN115653424B true CN115653424B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211366067.8A Active CN115653424B (en) | 2022-10-31 | 2022-10-31 | Concealed hinge for door |
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| CN (1) | CN115653424B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IT201700062317A1 (en) * | 2017-06-07 | 2018-12-07 | Effegi Brevetti Srl | HINGE FOR FURNITURE WITH CLOSING FORCE ADJUSTMENT DEVICE |
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| HK1045549A1 (en) * | 2000-10-10 | 2002-11-29 | Arturosalice S P A | Hinge for pieces of furniture with device for the slowed closing of the door. |
| JP2008025270A (en) * | 2006-07-24 | 2008-02-07 | Matsushita Electric Works Ltd | Structure of hidden hinge, and hidden hinge mounting method |
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| WO2017212453A1 (en) * | 2016-06-10 | 2017-12-14 | Anselmi & C. S.R.L. | Device for automatic closing of a door |
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|---|---|
| CN115653424A (en) | 2023-01-31 |
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