CN217999292U

CN217999292U - Door hinge

Info

Publication number: CN217999292U
Application number: CN202221760809.0U
Authority: CN
Inventors: 黎相弟
Original assignee: Zhanjiang Langdi Hardware Co ltd
Current assignee: Zhanjiang Langdi Hardware Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-12-09
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a door hinge, including first hinge frame, second hinge frame and be used for making first hinge frame, second hinge frame in the position of opening and the coupling assembling of laminating position upset, first hinge frame, second hinge frame set up respectively in coupling assembling's both sides, and with coupling assembling rotates to be connected, be formed with between first hinge frame and the second hinge frame and hold the protruding space of fender piece; the first hinge frame and the second hinge frame are respectively provided with a first contact surface and a second contact surface which are connected with a door and window frame or a door and window sash at the same sides of the first hinge frame and the second hinge frame towards the connecting component; when the first hinge bracket and the second hinge bracket are in the opening position, a space is formed between the first contact surface and the second contact surface in the vertical direction. When the door and window sash is opened, the door hinge can stride over the stopper protrusion, and the linked door and window sash also strides over the stopper protrusion, so that the problem that the door hinge and/or the door and window sash are extruded to the stopper protrusion can be effectively avoided, and door and window products are protected from being damaged.

Description

Door hinge

Technical Field

The utility model relates to a door body swivelling joint technical field, in particular to door hinge.

Background

The door hinge is the main part of the door and window product, and is usually fixedly installed with the door and window sash and the door and window frame, or assembled during installation. The door hinge structure commonly used by the existing door products is generally composed of three parts, namely a left hinge frame arranged on a door and window frame and a right hinge frame arranged on a door and window sash, and the left hinge frame and the right hinge frame are connected together through a connecting piece, so that the door products are opened and closed.

Some door and window frames and door and window sashes in the market need to have good sealing performance, therefore, a blocking piece protrusion protruding out of the door and window frames or the door and window sashes is arranged at the joint of the door and window frames and the door and window sashes, the blocking piece protrusion can be arranged on the door and window frames or the door and window sashes, when the door and window sashes are installed on the door and window products, the blocking piece protrusion can block the door and window sashes from being opened when the door and window sashes are opened to a certain angle through the door hinge, for example, the door and window sashes are opened by brute force, and the door hinge and/or the door and window sashes can extrude the blocking piece protrusion, so that the door body structure is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough and provide a door hinge when the junction of door and window frame and door and window fan is provided with to keep off the piece protruding, solve door hinge and/or door and window fan and extrude and keep off the bellied problem of piece.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a door hinge comprises a first hinge frame, a second hinge frame and a connecting assembly, wherein the connecting assembly is used for enabling the first hinge frame and the second hinge frame to turn between an opening position and a fitting position; the first hinge frame and the second hinge frame are respectively provided with a first contact surface and a second contact surface which are connected with a door and window frame or a door and window sash at the same sides of the first hinge frame and the second hinge frame towards the connecting assembly; when the first hinge bracket and the second hinge bracket are in the opening position, a space is formed between the first contact surface and the second contact surface in the vertical direction.

And a gap capable of accommodating the protrusion of the stopper is formed between the first hinge frame and the second hinge frame, and when the first hinge frame and the second hinge frame are in the opening positions, a distance is formed between the first contact surface and the second contact surface in the vertical direction, namely, a height difference exists between the first contact surface and the second contact surface, and the larger the height difference is, the larger the opening span of the door hinge is. When the door and window sash is opened, the door hinge can stride over the stopper to be convex, and the linked door and window sash also strides over the stopper to be convex, so that the problem that the door hinge and/or the door and window sash are extruded to the stopper to be convex can be effectively avoided, and the door and window product is protected from being damaged.

Furthermore, a limiting piece is arranged between the connecting assembly and the first hinge bracket or between the connecting assembly and the second hinge bracket, and the limiting piece is positioned on the turning motion track of the connecting assembly; when the first hinge frame and the second hinge frame turn over, the limiting part is pressed on the connecting component to limit the opening of the connecting component.

In order to enable the limiting part to be installed more stably, the limiting part is arranged on the first hinge bracket and is positioned on one side, facing the distance, of the connecting assembly and is arranged along the axis direction of the connecting assembly, which is turned relative to the first hinge bracket.

In order to more effectively avoid squeezing the door frame baffle, when the first hinge bracket and the second hinge bracket are in the opening position, a distance is formed between the bottom end of the first hinge bracket and the bottom end of the second hinge bracket in the vertical direction.

Furthermore, a first cavity is arranged in the first hinge frame, and a first opening for access is formed in the first cavity; the first hinge bracket comprises a first adjusting bracket and a first rotating shaft which are arranged in a first cavity, and the first adjusting bracket is rotatably connected with the first rotating shaft; the first cavity is internally and fixedly provided with a first fixing piece facing the first opening, and the first adjusting frame is pressed on the first fixing piece and is fixedly connected with the first fixing piece. The adjusting frame is pressed on the fixing piece, so that the downward gravity of the door is decomposed on the fixing piece and the adjusting frame to bear, and the force is transmitted to the hinge frame through the fixing piece, the stress of the connecting assembly is dispersed, the moving and the deformation of the connecting assembly caused by long-term use are avoided, and the stress of the door hinge is more reasonably distributed.

Furthermore, a second cavity is arranged in the second hinge frame, and a second opening for access is formed in the second cavity; the second hinge bracket comprises a second adjusting bracket and a second rotating shaft which are arranged in a second cavity, and the second adjusting bracket is rotationally connected with the second rotating shaft; and a second fixing piece facing the second opening is fixed in the second cavity, and the second adjusting frame is pressed on the second fixing piece and is connected and fixed with the second fixing piece.

Furthermore, in order to realize displacement adjustment in the vertical direction, an up-and-down adjusting assembly which enables the first adjusting frame to move up and down in the first cavity is arranged in the first adjusting frame, and a first adjusting gap for the first adjusting frame to move up and down is formed between the first adjusting frame and the first cavity.

Furthermore, in order to realize displacement adjustment in the left-right direction, a left-right adjusting assembly which enables the second adjusting frame to move left and right in the second cavity is arranged in the second adjusting frame, and a second adjusting gap for the second adjusting frame to move left and right is formed between the second adjusting frame and the second cavity.

Furthermore, in order to realize displacement adjustment in the front-back direction and further realize adjustment of the door gap, a front-back adjusting assembly which enables the first adjusting frame to move back and forth in the first cavity is arranged in the first adjusting frame, the front-back adjusting assembly abuts against the first fixing piece, and extrusion force is applied to the first fixing piece to enable the first adjusting frame to move along the extrusion force direction.

Furthermore, in order to realize displacement adjustment in the front-back direction and further realize adjustment of the door gap, a front-back adjusting assembly which enables the second adjusting frame to move back and forth in the second cavity is arranged in the second adjusting frame, the front-back adjusting assembly abuts against the second fixing member, and extrusion force is applied to the second fixing member to enable the second adjusting frame to move along the extrusion force direction.

The utility model has the advantages that:

1. and a gap capable of accommodating the protrusion of the stopper is formed between the first hinge frame and the second hinge frame, and when the first hinge frame and the second hinge frame are in the opening positions, a distance is formed between the first contact surface and the second contact surface in the vertical direction, namely, a height difference exists between the first contact surface and the second contact surface, and the larger the height difference is, the larger the opening span of the door hinge is. When the door and window sash is opened, the door hinge can stride over the stopper to be convex, and the linked door and window sash also strides over the stopper to be convex, so that the problem that the door hinge and/or the door and window sash are extruded to the stopper to be convex can be effectively avoided, and the door and window product is protected from being damaged.

2. When the baffle plate is too high, the space formed by the first contact surface and the second contact surface in the vertical direction needs to be large, and the structure of the door and window can be damaged if the space is too large, so that a limiting part structure is introduced, when the first hinge frame and the second hinge frame perform a turning action, the limiting part is pressed on the connecting assembly to limit the connecting assembly to be opened, the protrusion of the blocking part can be effectively prevented from being extruded, and the door and window can be protected from being damaged.

3. The connecting component, the first adjusting frame and the second adjusting frame can be hidden for storage. The dust accumulation caused by the fact that the connecting component is exposed in the air can be reduced conveniently, and the attractiveness of the product can be improved conveniently.

4. Through setting up first mounting, the second mounting, with first adjustment frame pressfitting on first mounting, the pressfitting of second adjustment piece is at the second mounting, simultaneously, first upset piece, the laminating is respectively on the inside wall of first cavity and second cavity to the second upset piece, make the decurrent gravity of door and window decompose at first mounting, the second mounting, first adjustment frame, bear on the second adjustment frame, and through first mounting, the second mounting will transmit the power to corresponding first hinge frame, on the second hinge frame, coupling assembling's atress has been disperseed, avoided leading to the fact coupling assembling's removal and deformation under the long-term use, make this hinge atress more rationally distributed.

5. Can all can all adjust the hinge in vertical, vertical and horizontal three orientation, moreover through the structure of the first setting element of improvement, second setting element, first mounting, second mounting, make the hinge realize the adjustment operation of simplification, optimize moreover the stability of hinge. On the other hand, adjust the subassembly about with and set up respectively on first alignment jig, second alignment jig, can make the regulation more convenient, and vertical slot hole and horizontal slot hole all set up to a plurality ofly, can make adjustment jig and hinge frame be connected more firmly, stable.

Drawings

Fig. 1 is a schematic front view of an opened state of a door hinge according to an embodiment of the present invention;

fig. 2 is a schematic top view of a door hinge according to an embodiment of the present invention in an open state;

fig. 3 is a schematic view of a connection assembly, a first adjustment frame, and a second adjustment frame according to a first embodiment of the present invention;

fig. 4 is a schematic structural view of a first adjusting frame and a second adjusting frame according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first hinge bracket and a second hinge bracket according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a first baffle and a second baffle connected to a door hinge according to an embodiment of the present invention;

fig. 7 is a schematic structural view illustrating a closed state of a door hinge according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a closed state of a door hinge according to a second embodiment of the present invention;

fig. 9 is a schematic structural view illustrating an opened state of a door hinge according to a second embodiment of the present invention.

Description of reference numerals:

the hinge assembly comprises a first hinge frame 1, a first opening 101, a first cavity 102, a first connecting block 103, a first fixing piece 104, a first fixing hole 105, a first rotating shaft 106, a first contact surface 107, a second hinge frame 2, a second opening 201, a second cavity 202, a second connecting block 203, a second fixing piece 204, a second fixing hole 205, a second rotating shaft 206, a second contact surface 207, a connecting assembly 3, a third rotating shaft 31, a first adjusting frame 4, a first adjusting gap 401, a first positioning piece 402, a first overturning piece 403, a vertical long hole 407, a second adjusting frame 5, a second adjusting gap 501, a second positioning piece 502, a second overturning piece 503, a vertical long hole 507, a positioning hole 508, a jacking piece 6, a first connecting piece 7, a second connecting piece 8, a first baffle plate 9, a second baffle plate 10, a limiting piece 11 and a gap 12.

Detailed Description

In order to make the technical solution, objects and advantages of the present invention more clearly understood, the present invention is further explained with reference to the accompanying drawings and embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 7, the hinge assembly comprises a first hinge frame 1, a second hinge frame 2 and a connecting assembly 3 for turning the first hinge frame 1 and the second hinge frame 2 between an opening position and a fitting position.

A first cavity 102 is arranged in the first hinge bracket 1, a first opening 101 for access is formed in the first cavity 102, a first fixing member 104 facing the first opening 101 is fixed in the first cavity 102, the first hinge bracket 1 comprises a first adjusting bracket 4 and a first rotating shaft 106 which are arranged in the first cavity 102, the first adjusting bracket 4 is rotatably connected with the first rotating shaft 106, meanwhile, the first rotating shaft 106 is also rotatably connected with one side end part of the connecting assembly 3 which can be turned, and the first adjusting bracket 4 is pressed on the first fixing member 104 and is fixedly connected with the first fixing member 104. In this embodiment, the number of the first fixing members 104 is two, one first fixing member 104 is fixedly connected to the inner sidewall above the first cavity 102, one first fixing member 104 is fixedly connected to the inner sidewall below the first cavity 102, and the two first fixing members 104 are symmetrically arranged and parallel to the bottom of the first cavity 102.

A second cavity 202 is arranged in the second hinge frame 2, the second cavity 202 forms a second opening 201 for access, a second fixing member 204 facing the second opening 201 is fixed in the second cavity 202, the second hinge frame 2 comprises a second adjusting frame 5 and a second rotating shaft 206 which are arranged in the second cavity 202, the second adjusting frame 5 is rotatably connected with the second rotating shaft 206, meanwhile, the first rotating shaft 106 is also rotatably connected with the other end part of the connecting assembly 3 which can be turned, and the second adjusting frame 5 is pressed on the second fixing member 204 and is fixedly connected with the second fixing member 204. In this embodiment, the number of the second fixing members 204 is two, one second fixing member 204 is fixedly connected to the inner sidewall above the second cavity 202, one second fixing member 204 is fixedly connected to the inner sidewall below the second cavity 202, and the two second fixing members 204 are symmetrically arranged and parallel to the bottom of the second cavity 202.

A gap 12 capable of accommodating the protrusion of the stopper is formed between the first hinge frame 1 and the second hinge frame 2; the first hinge frame 1 and the second hinge frame 2 are respectively provided with a first contact surface 107 and a second contact surface 207 which are connected with a door and window frame or a door and window sash on the same sides facing the connecting component 3; when the first hinge bracket 1 and the second hinge bracket 2 are in the open position, the first contact surface 107 and the second contact surface 207 are spaced apart from each other in the vertical direction. When the first hinge frame 1 and the second hinge frame 2 are in the opening position, a space is formed between the bottom end of the first hinge frame 1 and the bottom end of the second hinge frame 2 in the vertical direction. In this embodiment, when the first hinge frame 1 and the second hinge frame 2 are in the open position, it means that the first hinge frame 1 and the second hinge frame 2 are open at 180 degrees.

To make the embodiment more specific, but not limited to, the first contact surface 107 is at a high position relative to the second contact surface 207, and the second contact surface 207 is at a low position relative to the first contact surface 107. In the case defined above, during the mounting process, since the second contact surface 207 of the second hinge frame 2 is disposed at a lower position with respect to the first contact surface 107, the second hinge frame 2 needs to be mounted on the door sash having the stopper projection or the door sash frame having the stopper projection so as to ensure that the door sash smoothly passes over the stopper projection when the door sash is opened to a certain angle. Namely, when the stopper projection is provided on the sash, the second hinge frame 2 is mounted on the sash, the side of the second hinge frame 2 facing the joint assembly 3 is the second contact surface 207, the first hinge frame 1 is mounted on the sash, and the side of the first hinge frame 1 facing the joint assembly 3 is the first contact surface 107. When the stopper protrusion is arranged on the door and window frame, the second hinge frame 2 is arranged on the door and window frame, the surface of the second hinge frame 2 connected with the door and window frame on the side facing the connecting assembly 3 is the second contact surface 207, the first hinge frame 1 is arranged on the door and window sash, and the surface of the first hinge frame 1 connected with the door and window sash on the side facing the connecting assembly 3 is the first contact surface 107.

The first adjusting frame 4 includes two first positioning members 402 and a first turning member 403, the first turning member 403 is integrally of a u-shaped structure, the first adjusting frame 4 is provided with the first turning member 403 connected with the connecting member 3 in a turning manner, the first rotating shaft 106 is rotatably connected with the first turning member 403, and the first turning member 403 is attached to the inner side wall of the first cavity 102. Two first positioning members 402 are symmetrically disposed at both ends of the first flipping member 403 in the up-down direction of the first cavity 102.

The second adjusting frame 5 includes two second positioning members 502 and a second turning member 503, the second turning member 503 is integrally of a u-shaped structure, the second adjusting frame 5 is provided with the second turning member 503 connected to the connecting member 3 in a turning manner, the second rotating shaft 206 is rotatably connected to the second turning member 503, and the second turning member 503 is attached to the inner sidewall of the second cavity 202. The two second positioning members 502 are symmetrically disposed at two ends of the second turnover member 503 along the up-down direction of the second cavity 202.

The connecting assembly 3 is provided with a third rotating shaft 31, the third rotating shaft 31 is arranged between the first rotating shaft 106 and the second rotating shaft 206, and when the connecting assembly 3 drives the first adjusting frame 4 and the second adjusting frame 5 to perform turning motion, the whole first hinge frame 1 and the whole second hinge frame 2 are driven to turn between the opening position and the closing position. Since the first flip-flop 403 and the second flip-flop 503 are u-shaped, the first flip-flop 403 and the second flip-flop 503 are both provided with receiving spaces. Fig. 6 is a schematic view of the connection assembly 3 in a 180-degree open state, and fig. 7 is a schematic view of the connection assembly 3 in a closed state, when the connection assembly 3 is closed, the first adjustment frame 4 and the second adjustment frame 5 are driven to be closed, so as to drive the whole first hinge frame 1 and the whole second hinge frame 2 to be closed, the connection assembly 3 is hidden in the accommodating space on the first turning piece 403 and the second turning piece 503, the first opening 101 is communicated with the second opening 201, and an installation space for hiding the first adjustment frame 4 and the second adjustment frame 5 is formed, so that the connection assembly 3, the first adjustment frame 4, and the second adjustment frame 5 are hidden and accommodated.

In order to realize the displacement adjustment in the up-down direction, the first adjusting frame 4 is provided with an up-down adjusting component for moving the first adjusting frame 4 up and down in the first cavity 102, and a first adjusting gap 401 for moving the first adjusting frame 4 up and down is formed between the first adjusting frame 4 and the first cavity 102. Specifically, the vertical adjustment assembly comprises a plurality of vertical long holes 407 and first connecting pieces 7, the number of the first connecting pieces is matched with that of the vertical long holes 407, each vertical long hole 407 is arranged on the first positioning piece 402 and extends towards the first adjustment gap 401, the first fixing piece 104 is provided with first fixing holes 105 communicated with the vertical long holes 407, the number of the first fixing holes 105 is matched with that of the vertical long holes 407, and the first connecting pieces 7 penetrate through the vertical long holes 407 and the first fixing holes 105 to connect and fix the first adjustment frame 4 and the first fixing piece 104. The first connecting member 7 is specifically a screw, and a thread is provided on the screw, and a thread adapted to the thread of the screw is also provided in the first fixing hole 105. In this embodiment, two vertical long holes 407 are provided.

In order to realize the displacement adjustment in the left-right direction, a left-right adjustment assembly for moving the second adjustment frame 5 left and right in the second cavity 202 is arranged on the second adjustment frame 5, and a second adjustment gap 501 for moving the second adjustment frame 5 left and right is formed between the second adjustment frame 5 and the second cavity 202. Specifically, adjust a plurality of horizontal slot 507 of subassembly and with horizontal slot 507 quantity assorted second connecting piece 8 about, each horizontal slot 507 all sets up on second setting element 502 and extends towards second adjustment clearance 501 and arranges, seted up on the second mounting 204 with the communicating second fixed orifices 205 of horizontal slot 507, the quantity of seting up of second fixed orifices 205 matches with the quantity of vertical slot 407, second connecting piece 8 passes horizontal slot 507 and second fixed orifices 205 are connected second alignment jig 5 and second mounting 204 and are fixed. The second connecting member 8 is specifically a screw, a thread is provided on the screw, and a thread adapted to the thread of the screw is also provided in the second fixing hole 205. In this embodiment, two transverse long holes 507 are provided.

Adjust the subassembly about with and set up respectively on first alignment jig 4, second alignment jig 5, can make the regulation more convenient, and vertical slot hole 407 and horizontal slot hole 507 all set up to a plurality ofly, can make first alignment jig 4 more firm, stable with being connected of second alignment jig 5 with second hinge frame 2 with first hinge frame 1.

In order to realize displacement adjustment in the front-back direction and thus adjustment of the door gap, a front-back adjusting assembly is provided, which can be arranged on the first adjusting frame 4 and also on the second adjusting frame 5. Specifically, when the front and rear adjusting components are disposed on the first adjusting frame 4, the front and rear adjusting components abut against the first fixing member 104, and the first fixing member 104 is pressed to move the first adjusting frame 4 along the pressing direction, so that displacement adjustment in the front and rear direction is achieved. The front-back adjusting assembly includes a plurality of positioning holes 508 and pressing members 6 with the number matching with the number of the positioning holes 508, each positioning hole 508 is disposed on the first positioning member 402, and the pressing member 6 passes through the positioning hole 508 and presses on the first fixing member 104 to apply a pressing force to the first fixing member 104, so that the first adjusting frame 4 moves along the pressing direction. When the front and rear adjusting components are arranged on the second adjusting frame 5, the front and rear adjusting components are abutted against the second fixing member 204, and the second fixing member 204 is squeezed to move the second adjusting frame 5 along the squeezing direction, so that displacement adjustment in the front and rear direction is realized. Specifically, the front-back adjustment assembly includes a plurality of positioning holes 508 and pressing members 6 with the number matching with the number of the positioning holes 508, each positioning hole 508 is disposed on the second positioning member 502, and the pressing member 6 passes through the positioning hole 508 and presses against the second fixing member 204 to apply a pressing force to the second fixing member 204, so that the second adjustment frame 5 moves along the pressing force direction. More specifically, the pressing member 6 is a set screw, and a thread adapted to the set screw is disposed in the positioning hole 508.

As shown in fig. 5 to 6, the first hinge frame 1 is provided with a first connecting block 103 for mounting in a circumferential direction, and a first stopper 9 for blocking the first connecting block 103 and the first positioning member 402. The second hinge frame 2 is provided with a second connecting block 203 for installation in the circumferential direction, and a second baffle 10 for shielding the second connecting block 203 and the second positioning member 502. The first connecting block 103 and the second connecting block 203 are sheet metal parts welded or formed on the first hinge frame 1 and the second hinge frame 2 by sheet metal, and countersunk holes are formed in the first connecting block 103 and the second connecting block 203. The first connecting block 103 can facilitate the installation of the first hinge frame 1 on a door and window frame or a door and window sash, and the second connecting block 203 can facilitate the installation of the second hinge frame 2 on a door and window frame or a door and window sash, thereby facilitating the rapid installation and detachment of a door and a window.

In this embodiment, by providing the first fixing member 104 and the second fixing member 204, the first adjusting frame 4 is pressed on the first fixing member 104, and the second adjusting member is pressed on the second fixing member 204, and meanwhile, the first turning member 403 and the second turning member 503 are respectively attached to the inner side walls of the first cavity 102 and the second cavity 202, so that the downward gravity of the door and window is decomposed and borne on the first fixing member 104, the second fixing member 204, the first adjusting frame 4 and the second adjusting frame 5, and the force is transmitted to the corresponding first hinge frame 1 and the second hinge frame 2 through the first fixing member 104 and the second fixing member 204, thereby dispersing the stress of the connecting assembly 3, avoiding the movement and deformation of the connecting assembly 3 due to long-term use, and making the stress of the door hinge more reasonably distributed.

The second embodiment:

as shown in fig. 8 to 9, the second embodiment is different from the first embodiment only in that: a limiting piece 11 is arranged between the connecting component 3 and the first hinge bracket 1 or between the connecting component 3 and the second hinge bracket 2, and the limiting piece 11 is positioned on the turning motion track of the connecting component 3; when the first hinge frame 1 and the second hinge frame 2 perform a turning action, the limiting member 11 presses against the connecting member 3 to limit the opening of the connecting member 3. The limiting part 11 is arranged on the first hinge frame 1, is positioned on one side of the connecting assembly 3 facing the gap 12, and is arranged along the axis direction of the connecting assembly 3 turning relative to the first hinge frame 1.

The limiting member 11 may be disposed between the connecting member 3 and the first hinge bracket 1, or between the connecting member 3 and the second hinge bracket 2, and in this embodiment, the limiting member 11 is disposed between the connecting member 3 and the first hinge bracket 1, and the limiting member 11 has a rod-like structure to simplify the door hinge structure.

To better meet the requirements of users, the limiting member 11 can be arranged to be detachable. The customer can decide whether to install the position limiting member 11 according to the requirement.

The first contact surface 107 is spaced from the second contact surface 207 in a vertical direction, that is, there is a height difference between the first contact surface 107 and the second contact surface 207. The door hinge can span the stopper protrusion, but when the stopper protrusion is too high, the distance between the first contact surface 107 and the second contact surface 207 in the vertical direction needs to be large, and the large distance in the vertical direction will damage the structure of the door or window, at this time, the structure of the limiting member 11 can be introduced, when the first hinge frame 1 and the second hinge frame 2 perform the turning action, the limiting member 11 is pressed against the connecting member 3 to limit the opening of the connecting member 3, so as to effectively avoid the pressing of the stopper protrusion, thereby protecting the door or window from being damaged. In this embodiment, as shown in fig. 9, which is a schematic view illustrating the maximum opening angle of the first hinge frame 1 and the second hinge frame 2 of the connecting assembly 3 under the limitation of the limiting member 11, in order to better adapt to the products of windows and doors on the market, the opening angle of the first hinge frame 1 and the second hinge frame 2 in this embodiment is specifically 130 degrees.

The above is only the preferred embodiment of the present invention, and to the technical personnel in the technical field, without departing from the present invention, the embodiment can still be modified, and the corresponding modification should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a door hinge, includes first hinge frame, second hinge frame and is used for making first hinge frame, second hinge frame in the position of opening and the coupling assembling of laminating upset between the position, its characterized in that: the first hinge frame and the second hinge frame are respectively arranged at two sides of the connecting assembly and are rotationally connected with the connecting assembly, and a gap capable of accommodating the protrusion of the stopper is formed between the first hinge frame and the second hinge frame; the first hinge frame and the second hinge frame are respectively provided with a first contact surface and a second contact surface which are connected with a door and window frame or a door and window sash at the same sides of the first hinge frame and the second hinge frame towards the connecting component; when the first hinge bracket and the second hinge bracket are positioned at the opening positions, a space is formed between the first contact surface and the second contact surface in the vertical direction.

2. The door hinge according to claim 1, wherein a limiting member is disposed between the connecting member and the first hinge bracket or between the connecting member and the second hinge bracket, and the limiting member is located on a turning motion track of the connecting member; when the first hinge frame and the second hinge frame turn over, the limiting part is pressed on the connecting component to limit the opening of the connecting component.

3. The door hinge according to claim 2, wherein the stopper is provided on the first hinge bracket on a side of the joining member facing the gap in a direction of an axis of the joining member which is turned with respect to the first hinge bracket.

4. The door hinge according to claim 1, wherein a bottom end of the first hinge bracket is spaced apart from a bottom end of the second hinge bracket in a vertical direction when the first hinge bracket and the second hinge bracket are in the open position.

5. The door hinge according to claim 1, wherein a first cavity is provided in the first hinge frame, the first cavity being formed with a first opening for access; the first hinge bracket comprises a first adjusting bracket and a first rotating shaft which are arranged in a first cavity, and the first adjusting bracket is rotatably connected with the first rotating shaft; the first cavity is internally fixed with a first fixing piece facing the first opening, and the first adjusting frame is pressed on the first fixing piece and is connected and fixed with the first fixing piece.

6. The door hinge according to claim 1, wherein a second cavity is provided in the second hinge bracket, the second cavity forming a second opening for access; the second hinge bracket comprises a second adjusting bracket and a second rotating shaft which are arranged in a second cavity, and the second adjusting bracket is rotatably connected with the second rotating shaft; a second fixing piece facing the second opening is fixed in the second cavity, and the second adjusting frame is pressed on the second fixing piece and is connected and fixed with the second fixing piece.

7. The door hinge according to claim 5, wherein an up-down adjusting assembly for moving the first adjusting bracket up and down in the first cavity is arranged in the first adjusting bracket, and a first adjusting gap for moving the first adjusting bracket up and down is formed between the first adjusting bracket and the first cavity.

8. The door hinge according to claim 7, wherein a forward and backward adjustment assembly is disposed in the first adjustment bracket to move the first adjustment bracket forward and backward in the first cavity, the forward and backward adjustment assembly abuts against the first fixing member to apply a pressing force to the first fixing member to move the first adjustment bracket in a pressing direction.

9. The door hinge according to claim 6, wherein a left-right adjusting component for enabling the second adjusting frame to move left and right in the second cavity is arranged in the second adjusting frame, and a second adjusting gap for enabling the second adjusting frame to move left and right is formed between the second adjusting frame and the second cavity.

10. The door hinge according to claim 9, wherein a forward and backward adjustment assembly is disposed in the second adjustment bracket to move the second adjustment bracket forward and backward in the second cavity, the forward and backward adjustment assembly abuts against the second fixing member to apply a pressing force to the second fixing member to move the second adjustment bracket in a pressing direction.