Door and window hinge

Abstract

The door and window hinge comprises a bottom plate, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, a wind resistance piece is installed on the second connecting rod, an inclined face is arranged at one end of the wind resistance piece, a first limiting column is arranged on the outer side wall of the wind resistance piece, and a second limiting column is arranged on the outer side wall of the third connecting rod. One end of the third connecting rod is hinged between the inclined plane and the first limiting column, a limiting notch is formed in the side edge, facing the first limiting column, of the third connecting rod, in the completely unfolded state, the inclined plane abuts against one side edge of the first connecting rod, and the first limiting column is connected with the limiting notch in a clamped mode. According to the embodiment of the utility model, the first limiting column is clamped with the limiting notch for limiting, and is matched with the abutting limiting between the inclined surface at the end part of the wind resistance piece and the side edge of the first connecting rod, so that the hinge in a completely unfolded state is subjected to double limiting, and the wind resistance effect of the wind resistance piece can be further enhanced; and the overall structural strength and stability of the hinge are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window hardware technical field especially relates to a door and window hinge. BACKGROUND

[0002] Door and window hinge is used to connect door frame and door, window frame and window and allows the relative rotation between both, through the control hinge's unfolding and the closing angle, the opening and closing range of door and window is convenient to control. Door and window hinge when using, usually need to consider the influence of wind, therefore, door and window hinge mostly will design have the wind resistance structure.

[0003] In the prior art, such as the utility model patent with the announcement number CN220869111U provides a hinge structure of door and window, including bottom plate, connecting rod A, connecting rod B, connecting rod C and connecting rod D, wherein: the both ends of connecting rod A are respectively hinged with bottom plate and connecting rod B;One end of connecting rod C is hinged with the middle part of connecting rod B, and the other end is hinged with one end of bottom plate;One end of connecting rod D is hinged with connecting rod C, and the other end is hinged with sliding piece, which is slidingly installed on the bottom plate;Anti-wind resistance piece is fixedly installed between connecting rod A and connecting rod B;One end of the anti-wind resistance piece is provided with an inclined surface, which can be in contact with one end of connecting rod C when the hinge is fully unfolded;A protrusion is arranged on one side of the bottom plate, and a limiting notch is arranged on one side of the connecting rod A, which can be clamped on the protrusion when the hinge is fully folded.

[0004] In the technical scheme, the inclined surface at one end of the anti-wind resistance piece is in contact with one end of the connecting rod C, which can play the role of wind resistance when the hinge is in the unfolded state. However, when the hinge is in the unfolded state, it usually represents that the door and window are in the open state, at this time, the wind resistance of the door and window is often greater. Only the contact between the inclined surface at the end of the anti-wind resistance piece and the end surface of the connecting rod C can limit the structure, which has low structural strength, so that the wind resistance effect cannot be guaranteed. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a door and window hinge to solve the poor wind resistance effect of the door and window hinge in the unfolded state in the prior art.

[0006] To achieve one or part or all of the above purposes or other purposes, the utility model provides a door and window hinge, which comprises a bottom plate, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, wherein:

[0007] One end of the first connecting rod is slidingly hinged with the bottom plate, the other end of the first connecting rod is hinged with the second connecting rod, both ends of the third connecting rod are respectively hinged with the bottom plate and the second connecting rod, and both ends of the fourth connecting rod are respectively hinged with the bottom plate and the first connecting rod;

[0008] The second connecting rod is provided with a wind resistance resisting member, one end of the wind resistance resisting member is provided with an inclined surface, an outer side wall of the wind resistance resisting member is provided with a first limiting column, one end of the third connecting rod is hingedly connected to the wind resistance resisting member and located between the inclined surface and the first limiting column, a limiting gap is arranged on one side of the third connecting rod facing the first limiting column, in the fully unfolded state, the inclined surface abuts against one side of the first connecting rod, and the first limiting column is clamped with the limiting gap.

[0009] Preferably, an outer side wall of the wind resistance resisting member is provided with a limiting block, one side wall of the limiting block is flush with the inclined surface.

[0010] Preferably, the height of the first limiting column is less than or equal to the thickness of the third connecting rod.

[0011] Preferably, the other end of the wind resistance resisting member is provided with an arc-shaped gap in the shape of a hook, the bottom plate is provided with a second limiting column, and in the fully folded state, the second limiting column is clamped with the arc-shaped gap.

[0012] Preferably, the height of the second limiting column is greater than or equal to the sum of the thicknesses of the third connecting rod and the wind resistance resisting member.

[0013] Preferably, the bottom plate is provided with a sliding rail and a sliding block, the sliding block is slidingly installed in the sliding rail, and one end of the first connecting rod is hingedly connected to the sliding block.

[0014] Preferably, both ends of the bottom wall of the bottom plate are respectively provided with a rotating clamping piece, and the rotating clamping piece can rotate by 90 degrees.

[0015] Preferably, the end portions of the first connecting rod, the third connecting rod and the fourth connecting rod are all provided in a rounded corner shape.

[0016] Preferably, the widths of the bottom plate, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all equal.

[0017] Preferably, the bottom plate, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all made of stainless steel.

[0018] The embodiment of the present application has the following beneficial effects:

[0019] After the above door and window hinge is adopted, the first limiting column and the limiting gap are clamped and limited, and the abutment and limitation between the inclined surface at the end of the wind resistance resisting member and the side edge of the first connecting rod are combined, so that the hinge in the fully unfolded state is doubly limited, the wind resistance resisting effect of the wind resistance resisting member can be further enhanced, and the overall structural strength and stability of the hinge can be significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Among them:

[0022] Figure 1 The unfolded state structure schematic of the door and window hinge provided by the present application Figure 1 ;

[0023] Figure 2 The unfolded state structure schematic of the door and window hinge provided by the present application Figure 2 ;

[0024] Figure 3 The folded state structure schematic of the door and window hinge provided by the present application

[0025] Figure 4 The local structure split schematic of the door and window hinge provided by the present application Figure 1 ;

[0026] Figure 5 The local structure split schematic of the door and window hinge provided by the present application Figure 2 .

[0027] The drawings show: 10, bottom plate; 11, second limiting column; 12, slide rail; 13, sliding block; 14, rotating clamping piece; 20, first connecting rod; 30, second connecting rod; 40, third connecting rod; 41, limiting notch; 50, fourth connecting rod; 60, wind resistance piece; 61, inclined surface; 62, first limiting column; 63, limiting block; 64, arc-shaped notch. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification of the present application and claims and the above drawing description, are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application or the above drawing description are used to distinguish different objects, not to describe a particular order.

[0029] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0030] In order to make the technical personnel in the technical field better understand the application scheme, the technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings.

[0031] As shown in the embodiment provided by the application. Figures 1-5

[0032] The embodiment of the application provides a door and window hinge, which comprises a bottom plate 10, a first connecting rod 20, a second connecting rod 30, a third connecting rod 40 and a fourth connecting rod 50, the bottom plate 10, the first connecting rod 20, the second connecting rod 30, the third connecting rod 40 and the fourth connecting rod 50 are all made of stainless steel and have equal widths, the surface of the stainless steel can be passivated to improve corrosion resistance, and the widths of the components are uniform, so that the overall structural symmetry and stress uniformity of the hinge can be ensured.

[0033] Specifically, the bottom plate 10 is provided with a sliding rail 12 and a sliding block 13 along the length direction thereof, the sliding block 13 is slidingly installed in the sliding rail 12, the sliding rail 12 can be specifically provided in the form of a long strip-shaped hole, one end of the first connecting rod 20 is hingedly connected with the sliding block 13 and can move along with the sliding block 13 in the sliding rail 12, the other end of the first connecting rod 20 is hingedly connected with the second connecting rod 30, both ends of the third connecting rod 40 are hingedly connected with the bottom plate 10 and the second connecting rod 30 respectively, both ends of the fourth connecting rod 50 are hingedly connected with the bottom plate 10 and the first connecting rod 20 respectively, the bottom plate 10, the first connecting rod 20, the second connecting rod 30, the third connecting rod 40 and the fourth connecting rod 50 are hingedly connected through rivets to form a hinge with a multi-connecting rod structure, the bottom wall of the bottom plate 10 is provided with a rotating clamping piece 14 at both ends thereof, the rotating clamping piece 14 can rotate by 90 degrees, and during installation, the rotating clamping piece 14 can be directly inserted into a clamping groove of a sash wall frame or a door frame and rotated and fixed, so that the hinge can be quickly installed and fixed, and the third connecting rod 40 is used for being connected with a window or a door, so that the window or the door can be opened and closed and rotated relative to a window frame or a door frame.

[0034] ​The second connecting rod 30 is provided with a wind resistance piece 60 along the length direction thereof, the wind resistance piece 60 is integrally formed by stamping a stainless steel plate and is fixed on the second connecting rod 30 by rivets, one end of the wind resistance piece 60 is provided with an inclined surface 61, the outer side wall of the wind resistance piece 60 is provided with a first limiting column 62, one end of the third connecting rod 40 is hinged on the wind resistance piece 60 and is located between the inclined surface 61 and the first limiting column 62, the side of the third connecting rod 40 towards the first limiting column 62 is provided with a limiting notch 41, in the fully unfolded state of the hinge, the inclined surface 61 forms a surface contact abutment with the side of the first connecting rod 20, at the same time, the first limiting column 62 is clamped with the limiting notch 41, forming double limiting, which can disperse the stress of the inclined surface 61 and the first limiting column 62, significantly improving the structural strength and stability of the hinge as a whole, and further enhancing the wind resistance effect of the wind resistance piece 60.

[0035] Further, the outer side wall of the wind resistance piece 60 is provided with a limiting block 63, one side wall of the limiting block 63 is flush with the inclined surface 61, which is equivalent to increasing the width of the inclined surface 61, when the hinge is fully unfolded, the side wall of the limiting block 63 forms an auxiliary contact surface with the side of the first connecting rod 20, which can further disperse the stress received by the inclined surface 61, and can also cope with the scenario of the end of the first connecting rod 20 moving along the axial direction of the hinge axis, even if the side of the first connecting rod 20 is separated from the inclined surface 61, it can still be supported and limited by the limiting block 63.

[0036] Further, the height of the first limiting column 62 is less than or equal to the thickness of the third connecting rod 40, avoiding the first limiting column 62 from hindering or interfering with the movement of other connecting rods.

[0037] Further, the other end of the wind resistance piece 60 is provided with an arc-shaped notch 64, the bottom plate 10 is provided with a second limiting column 11, the height of the second limiting column 11 is greater than or equal to the sum of the thicknesses of the third connecting rod 40 and the wind resistance piece 60, in the fully folded state of the hinge, the second limiting column 11 is clamped with the arc-shaped notch 64, so that the bottom plate 10, the first connecting rod 20, the second connecting rod 30, the third connecting rod 40 and the fourth connecting rod 50 are all on the same straight line and are fixed, to stabilize the closed state of the door and window.

[0038] Further, the ends of the first connecting rod 20, the third connecting rod 40 and the fourth connecting rod 50 are all provided with rounded corners, so that the ends thereof will not exceed the width range of the connecting rod or the bottom plate 10 when rotating.

[0039] The working process of the door and window hinge is as follows: when the door and window are opened, the sliding block 13 slides along the slide rail 12, drives the first connecting rod 20 and the second connecting rod 30 to unfold, at this time, the inclined surface 61 of the wind resistance piece 60 abuts against the end of the first connecting rod 20, the first limiting column 62 is clamped into the limiting gap 41, and a stable supporting structure is formed. When the door and window are subjected to strong wind load, the wind resistance piece 60 disperses stress to the bottom plate 10 and the third connecting rod 40 through the double limiting structure, and local deformation is avoided. When the door and window are closed, the clamping of the second limiting column 11 and the arc-shaped gap 64 provides reset guiding, and it is ensured that the folding action is smooth.

[0040] Obviously, the above-described embodiments are only some embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A hinge for doors and windows, characterized in that, The utility model relates to a foldable awning, which comprises a base plate (10), a first connecting rod (20), a second connecting rod (30), a third connecting rod (40) and a fourth connecting rod (50), wherein: one end of the first connecting rod (20) is slidingly hinged to the base plate (10), the other end of the first connecting rod (20) is hinged to the second connecting rod (30), both ends of the third connecting rod (40) are hinged to the base plate (10) and the second connecting rod (30) respectively, and both ends of the fourth connecting rod (50) are hinged to the base plate (10) and the first connecting rod (20) respectively; a wind resistance resisting member (60) is mounted on the second connecting rod (30), one end of the wind resistance resisting member (60) is provided with an inclined surface (61), a first limiting column (62) is arranged on the outer side wall of the wind resistance resisting member (60), one end of the third connecting rod (40) is hinged to the wind resistance resisting member (60) and located between the inclined surface (61) and the first limiting column (62), a limiting notch (41) is arranged on the side of the third connecting rod (40) facing the first limiting column (62), and in the fully unfolded state, the inclined surface (61) abuts against one side of the first connecting rod (20), and the first limiting column (62) is clamped with the limiting notch (41). A limiting block (63) is arranged on the outer side wall of the wind resistance resisting member (60), and one side wall of the limiting block (63) is flush with the inclined surface (61).

2. The door and window hinge according to claim 1, characterized in that, The height of the first limiting column (62) is less than or equal to the thickness of the third connecting rod (40).

3. The door and window hinge according to claim 1, characterized in that, The other end of the wind resistance resisting member (60) is provided with an arc-shaped notch (64) in the shape of a hook, a second limiting column (11) is arranged on the base plate (10), and in the fully folded state, the second limiting column (11) is clamped with the arc-shaped notch (64).

4. The door and window hinge according to claim 1, characterized in that, The height of the second limiting column (11) is greater than or equal to the sum of the thicknesses of the third connecting rod (40) and the wind resistance resisting member (60).

5. A door and window hinge according to claim 4, characterised in that, A sliding rail (12) and a sliding block (13) are arranged on the base plate (10), the sliding block (13) is slidingly installed in the sliding rail (12), and one end of the first connecting rod (20) is hinged to the sliding block (13).

6. The door and window hinge according to claim 1, wherein Rotary clamping pieces (14) are arranged at both ends of the bottom wall of the base plate (10), and the rotary clamping pieces (14) can rotate by 90°.

7. A door and window hinge according to claim 6, characterised in that The end portions of the first connecting rod (20), the third connecting rod (40) and the fourth connecting rod (50) are all provided with rounded corners.

8. The door and window hinge according to claim 1, wherein The widths of the base plate (10), the first connecting rod (20), the second connecting rod (30), the third connecting rod (40) and the fourth connecting rod (50) are all equal.

9. The door and window hinge according to claim 1, wherein The base plate (10), the first connecting rod (20), the second connecting rod (30), the third connecting rod (40) and the fourth connecting rod (50) are all made of stainless steel.

10. The door and window hinge according to claim 1, wherein ​

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