CN219138744U

CN219138744U - Door hinge with buffer mechanism

Info

Publication number: CN219138744U
Application number: CN202222893079.8U
Authority: CN
Inventors: 茅立明; 谢增荣; 唐海龙
Original assignee: Guangdong Mingmen Locks Industry Co Ltd
Current assignee: Guangdong Mingmen Locks Industry Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-06-06
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to the technical field of door hardware equipment, and discloses a door hinge with a buffer mechanism, which comprises: the first shell and the second shell are hollow structures with one side open; the linkage assembly is hinged in the first shell and the second shell at two ends respectively, 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 respectively when the door hinge is opened and closed; the damper is fixedly arranged in the first shell, and one end of the damper is provided with a telescopic piston rod; the compression part is arranged in the first shell in a sliding way, one end of the compression part is provided with a pressing plate which is abutted on the piston rod, and one side of the compression part is provided with a rack; the driving part is arranged on the first connecting arm, a plurality of teeth capable of being meshed with the racks are arranged on the periphery of the driving part, and when the door hinge reaches a preset angle in the closing process, the driving part can drive the pressing plate to compress the piston rod. This door hinge with buffer gear has integrated buffer assembly in door hinge, and has simple structure, can reduce the cost that steady closing the door consumed.

Description

Door hinge with buffer mechanism

Technical Field

The utility model relates to the technical field of door hardware equipment, in particular to a door hinge with a buffer mechanism.

Background

For some public doors, it is often necessary to provide an auto-close function. For example, a spring or the like is arranged on the door leaf to drive the door leaf to be closed, and when the door leaf is opened, the spring can automatically close the door leaf. However, in the closing process, due to the inertia effect, the closing speed and sound of the door leaf are easy to be large, and the using effect is affected. Some products introduce damping means in the mechanism driving the door leaf to close, but their structure is more complex and the cost is higher.

Disclosure of Invention

The utility model aims to solve the technical problems, and aims to provide the door hinge with the buffer mechanism, which is integrated in the door hinge, has a simple structure and can reduce the cost consumed by stably closing the door.

In order to achieve the above object, the present utility model provides a door hinge with a damper mechanism, comprising: the first shell and the second shell are hollow structures with one side open, and the two openings are opposite when the door 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 respectively when the door hinge is opened and closed; the damper is fixedly arranged in the first shell, and one end of the damper is provided with a telescopic piston rod; a compression part which is arranged in the first shell in a sliding way, one end of the compression part is provided with a pressing plate which is abutted against the piston rod, 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, wherein when a door hinge reaches a preset angle in the closing process, the teeth are meshed with the racks, and the pressing plate is driven 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.

Preferably, the rack comprises two first meshing teeth and one second meshing tooth, one second tooth and two first teeth are arranged on the periphery of the driving part, and when the driving part is connected with the compression part, the first teeth move in the meshing part range.

Preferably, the driving part and the first connecting arm are of an integrated structure and sleeved on a pin shaft in the first casing.

Preferably, the damper, the compression part and the driving part are provided in two groups, and are respectively arranged at two ends in the first casing.

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 damper is fixed on the first base; the compression part is arranged on the first base in a sliding way.

As is apparent from the above description and practice, the door hinge with a damper according to the present utility model is constructed by providing a first link arm capable of rotating in opposite directions when opening and closing the door hinge, and a fixed damper and a sliding compression part in a first housing, and providing a driving part capable of being engaged with the compression part in the first link arm. When the door hinge reaches a preset angle in the closing process, teeth on the driving part are meshed with racks of the compression part and drive the compression part to slide so as to compress a piston rod of the damper, at the moment, the acceleration of the piston rod is instantaneously increased, and larger resistance can be provided, so that the rotating speed of the first connecting arm is reduced, and finally, the door hinge is closed at a lower speed and stably. Compared with the traditional buffer mechanism, the door hinge with the buffer mechanism integrates the buffer mechanism in the door hinge, and can reduce the closing speed of the door hinge by a simple structure only by improving the linkage assembly and arranging the damper, the compression part and the driving part in one shell, thereby reducing the cost consumed by stably closing the door.

Drawings

Fig. 1 is a schematic view showing a structure of a door hinge with a damper mechanism according to an embodiment of the present utility model in an open state.

Fig. 2a and 2b are schematic perspective sectional views of a door hinge with a damper mechanism according to an embodiment of the present utility model in a fully opened and a fully closed state, respectively.

Fig. 3a and 3b are schematic structural views of the first housing according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a first connecting arm according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a compression portion according to an embodiment of the present utility model.

The reference numerals in the figures are:

11. a first housing; 12. a second housing; 13. a first stand; 14. a second stand; 21. a first connecting arm; 22. a second connecting arm; 23. a third connecting arm; 24. a fourth connecting arm; 25. a first pin; 26. a shaft sleeve; 31. a limit part; 32. a chute; 41. a damper; 411. a piston rod; 42. a compression section; 43. a driving section; 421. a pressing plate; 422. a rack; 51. a first tooth; 52. a second tooth; 61. a first engagement tooth; 62. a second meshing tooth; 63. and a meshing part.

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 utility model.

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 utility model will be understood in specific cases by those of ordinary skill in the art.

In this embodiment, a door hinge with a buffer mechanism is disclosed, and fig. 1 shows a structure of the door hinge with a buffer mechanism in an opened state; fig. 2a shows a perspective sectional structure of the door hinge with the buffer mechanism in an open state; FIG. 2b shows a perspective cross-sectional view of the door hinge with cushioning mechanism in a closed position, wherein the first and second housings are hidden to reveal more internal structure; fig. 3a and 3b show the structure and connection relationship of each component in the first housing of the door hinge with the buffer mechanism, wherein the structure of the first housing is omitted in fig. 3b 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 door hinge with a buffering mechanism includes a first housing 11, a second housing 12, a linkage assembly, and a buffering assembly composed of a damper, a compression portion, and a driving portion. 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 door 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 door hinge and the connection relationship thereof will be described, and accordingly, the buffer assembly is also provided in the first housing 11 on the door frame. In other embodiments, of course, the damping assembly may be disposed within the second housing 12 and mounted on the door leaf, and the corresponding damping function may be achieved.

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 door hinge. One end of the first connecting arm 21 is hinged in the first housing 11, and when the door 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 door hinge rotates counterclockwise about the hinge axis from the open position to the closed position, gradually from approximately perpendicular to the bottom surface of the first housing 11 to the side abutting against the bottom surface of the first housing 11; conversely, the first connecting arm 21 rotates clockwise about the hinge axis from closing to opening.

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 to the side of the first housing 11 far away from the opening, and the other end of the first connecting arm can extend to the 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 door hinge; 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 door 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 door hinge.

In the prior art, there are various linkage assemblies capable of connecting two housings of the door hinge, and the first connecting arm 21 provided in the first housing 11 and rotating in opposite directions when opening and closing the door 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 door hinge can be opened and closed as well. For example, the number of connecting arms is reduced, so that the opening and closing range of the door hinge is only 0-90 degrees.

Further, in this embodiment, the second connecting arm 22 and the fourth connecting arm 24 are both in a bent structure, so that only a part of the structure is exposed after the door hinge is completely opened, and meanwhile, the door hinge can be located in two housings after the door 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.

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 door hinge can be opened and closed uniformly.

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. Through setting up first frame 13 and second frame 14, can install interlock subassembly and buffering subassembly 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.

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 between the compression part 42 and the first stand 13 can be realized by means of the limiting part 31 and the sliding groove 32, as shown in fig. 3a, the two side surfaces of the compression part 42 are respectively provided with a strip-shaped limiting part 31, and the first stand 13 is also provided with the sliding groove 32 which can be in sliding connection with the compression part, when in use, the limiting part 31 can slide in the sliding groove 32, so that the sliding connection between the compression part 42 and the first stand 13 is realized.

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 door 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 door hinge is closed 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, and the driving part 43 has only a degree of freedom of rotation during opening and closing of the door 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 door 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 door hinge can be delayed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model 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 utility model 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

1. A door hinge with cushioning mechanism, comprising:

the first shell and the second shell are hollow structures with one side open, and the two openings are opposite when the door 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 respectively when the door hinge is opened and closed;

the damper is fixedly arranged in the first shell, and one end of the damper is provided with a telescopic piston rod;

a compression part which is arranged in the first shell in a sliding way, one end of the compression part is provided with a pressing plate which is abutted against the piston rod, 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, wherein when a door hinge reaches a preset angle in the closing process, the teeth are meshed with the racks, and the pressing plate is driven to compress the piston rod.

2. The door hinge with a buffering mechanism of claim 1,

the rack comprises first meshing teeth and second meshing teeth, wherein the first meshing teeth and the second meshing teeth are arranged at intervals, the length of the second meshing teeth is longer than that of the first meshing teeth, and meshing parts are 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.

3. The door hinge with a buffering mechanism of claim 2, wherein,

the rack comprises two first meshing teeth and one second meshing tooth, and one second tooth and two first teeth are arranged on the periphery of the driving part, wherein when the driving part is connected with the compression part, the first teeth move in the range of the meshing part.

4. The door hinge with a buffering mechanism of claim 1,

the driving part and the first connecting arm are of an integrated structure and sleeved on the pin shaft in the first casing.

5. The door hinge with a buffering mechanism of claim 1,

the damper, the compression part and the driving part are arranged in two groups, and are respectively arranged at two ends in the first shell.

6. The door hinge with a buffering mechanism of any one of claim 1 to 5,

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 door hinge with a buffering mechanism of any one of claim 1 to 5,

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 damper is fixed on the first base;

the compression part is arranged on the first base in a sliding way.