CN220267463U - Auxiliary bearing hinge - Google Patents

Abstract

The utility model discloses an auxiliary bearing hinge which comprises a window frame mounting seat, a window sash mounting seat, a first bearing piece and a second bearing piece; the window frame mounting seat is rotationally connected with the first bearing piece through a first rotating shaft; the first bearing piece is rotationally connected with the second bearing piece through a second rotating shaft; the second bearing piece is rotationally connected with the window sash mounting seat through a third rotating shaft; the window frame mounting seat, the first bearing piece, the second bearing piece and the window sash mounting seat can rotate and fold into a gap between the window frame and the window sash in a window closing state, and the first bearing piece and the second bearing piece are not overlapped on the same horizontal plane. The gravity of the window sash can be transmitted to the window frame through the window sash mounting seat, the third rotating shaft, the second bearing piece, the second rotating shaft, the first bearing piece, the first rotating shaft and the window frame mounting seat in sequence; each mounting seat and the bearing piece can rotate to the same vertical line and are not overlapped on the same horizontal plane, so that the window can be folded into a form of being mutually noninterfere in a window closing state and can be stored between the side walls of the window sash and the window frame, and normal window opening and closing are not affected.

Description

Auxiliary bearing hinge

Technical Field

The utility model relates to the field of window equipment, in particular to an auxiliary bearing hinge.

Background

Currently, a flat-open window on the market, such as CN217353964U, is a windproof flat-open window, and relates to the technical field of flat-open windows. The utility model comprises a window frame, wherein a window is symmetrically and rotatably matched in the window frame, a locking toothed plate is arranged on the inner wall of the lower part of the window frame, a connecting plate is rotatably matched on the bottom surface of the window, and a gear meshed with the locking toothed plate is rotatably matched on the bottom surface of one end of the connecting plate far away from the window; the gear upper side has been seted up the spacing groove, and the spout has been seted up to the connecting plate bottom surface, and sliding fit has spacing post in spacing groove, the spout. According to the utility model, the limit posts are slidably matched in the limit grooves and the slide grooves, the threaded rods matched with the threads of the limit posts are rotationally matched in the limit grooves, so that the gear is conveniently released from limit or opposite by rotating the threaded rods, the opened window is rapidly positioned or the window is free to be opened or closed, the probability that breeze blows the window to automatically close and influence indoor ventilation is reduced, and breeze drives the window to rapidly rotate and shake glass on the window is reduced.

The casement window has the advantages that the casement window is heavy, the whole support is supported by the hinge, the hinge load is large, the time is long, the lower hinge can deform, the window opening and closing smooth procedure is reduced, and the window closing tightness is reduced. The hinge link cannot be thickened to enhance its load carrying capacity due to the space size limitations of the frame sash profile. There is thus a need for a load bearing auxiliary device that can be installed in a limited space between the frame sashes.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present utility model to provide a load bearing auxiliary device that can be installed in a limited space between frame sashes.

The technical scheme adopted for solving the technical problems is as follows:

an auxiliary bearing hinge comprises a window frame mounting seat, a window sash mounting seat, a first bearing piece and a second bearing piece; the window frame mounting seat is rotationally connected with the first bearing piece through a first rotating shaft; the first bearing piece is rotationally connected with the second bearing piece through a second rotating shaft; the second bearing piece is rotationally connected with the window sash mounting seat through a third rotating shaft; the window frame mounting seat, the first bearing piece, the second bearing piece and the window sash mounting seat can rotate and fold into a gap between the window frame and the window sash in a window closing state, and are not overlapped on the same horizontal plane.

By adopting the technical scheme, the gravity of the window sash can be transmitted to the window frame through the window sash mounting seat, the third rotating shaft, the second bearing piece, the second rotating shaft, the first bearing piece, the first rotating shaft and the window frame mounting seat in sequence; each mounting seat and the bearing piece can rotate to the same vertical line and are not overlapped on the same horizontal plane, so that the window can be folded into a form of being mutually noninterfere in a window closing state and can be stored between the side walls of the window sash and the window frame, and normal window opening and closing are not affected.

As an improvement, the bottom of the second load bearing member is not lower than the top of the first load bearing member and the bottom of the window sash mounting base is not lower than the top of the second load bearing member.

By adopting the technical scheme, the window frame mounting seat supports the window sash through the second bearing piece and the window sash mounting seat which are arranged above.

As an improvement, the top of the second load bearing member is not higher than the bottom of the first load bearing member and the window frame mount, and the top of the window sash mount is not lower than the bottom of the second load bearing member.

By adopting the technical scheme, the window frame mounting seat supports the window sash through the second bearing piece and the window sash mounting seat which are arranged below.

As an improvement scheme, the first bearing piece is rotationally connected with two second bearing pieces through the top and the bottom of the second rotating shaft; the second bearing piece above the first bearing piece is rotationally connected with the window sash mounting seat above the second bearing piece through a third rotating shaft; the second bearing piece below the first bearing piece is rotationally connected with the window sash mounting seat below the second bearing piece through the third rotating shaft.

By adopting the technical scheme, the window frame mounting seat supports the window sash through the upper and lower second bearing pieces and the window sash mounting seat. The second bearing piece and the window sash mounting seat are used at the upper part and the lower part, so that the stability of the window sash can be improved.

As an improvement scheme, be equipped with the sliding tray that matches with first pivot on the window frame mount pad, the sliding tray is continuous curve logical groove on the horizontal plane.

Through adopting above-mentioned technical scheme, first bearing piece can be through the sliding tray removal in the horizontal direction, and in the in-process adaptation displacement of opening and closing the casement makes the switch window smoother. The meaning of the continuous curve through groove of the sliding groove on the horizontal plane is that the problem that the first rotating shaft is possibly inclined under the condition that the sliding groove is straight is avoided.

As an improvement scheme, still be equipped with correction spring in the first pivot, correction spring both ends respectively with first load-carrying member and window frame mount pad butt.

By adopting the technical scheme, the correction spring applies pressure to the first bearing piece and the window frame, so as to assist the first bearing piece to maintain stable posture relative to the window frame and keep the first rotating shaft vertical.

As an improvement scheme, the window sash mounting seat is further provided with an adjusting bolt, and the adjusting bolt is rotationally connected with the window sash mounting seat through a vertical threaded hole and is arranged above the third rotating shaft.

Through adopting above-mentioned technical scheme, can be through rotatory adjusting bolt, the height of adjustment casement relative to the third pivot.

As an improvement scheme, the window frame mounting seat/window sash mounting seat is provided with a clamping groove matched with the groove of the window frame/window sash; and is fixedly connected with the window frame/window sash through a bolt perpendicular to the groove.

By adopting the technical scheme, the stability of connection between the window frame mounting seat/window sash mounting seat and the window frame/window sash can be improved.

As an improvement scheme, the second rotating shaft is provided with an annular groove; the window frame mounting seat is provided with a guide curved surface matched with the annular groove.

By adopting the technical scheme, the guide curved surface can guide the first rotating shaft to smoothly slide through the annular groove, so that the fluency of opening and closing the window sash is improved.

As an improvement scheme, a support rail is arranged on the bottom edge of the window frame, and the window frame mounting seat is movably arranged in the support rail; the first bearing piece is arranged between the bottom edge of the window frame and the bottom edge of the window sash in a sliding manner, and the bottom of the first bearing piece is propped against the top of the bottom edge of the window frame; the second bearing piece is rotatably connected with the first bearing piece and is arranged between the side edge of the window frame and the side edge of the window sash.

The technical scheme has the advantages that on one hand, the window frame supports the window sash through the path of supporting the first bearing piece, the second bearing piece and the window frame mounting seat, and the load on the window frame supporting seat is reduced. On the other hand, in the window closing state, the first bearing piece and the window frame supporting seat are accommodated in the space between the window frame bottom edge and the window sash bottom edge, and the second bearing piece and the window sash mounting seat are accommodated in the space between the window frame side edge and the window sash side edge, so that normal opening and closing actions of the window are not hindered.

As an improvement, a sheath is detachably arranged on the first bearing piece, and the sheath is clamped between the first bearing piece and the bottom edge of the window frame.

By adopting the scheme, the friction force between the first bearing piece and the bottom edge of the window frame can be reduced through the sheath, so that the opening and closing of the window is smoother, and in addition, the soft sheath is used, so that the abrasion of the first bearing piece and the window frame can be avoided, only the sheath is abraded, and the replacement is facilitated when the sheath is abraded to a certain extent, thereby being beneficial to maintenance and prolonging the service life.

As an improvement, the second bearing member includes a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are mutually bonded and fixed by bolts to form the second bearing member. The contact surfaces of the first clamping piece and the second clamping piece are provided with a horizontal sliding groove and a horizontal sliding block which are horizontally arranged in a matching mode.

By adopting the scheme, the second bearing piece can adjust the distance between the second rotating shaft and the third rotating shaft by adjusting the relative positions of the first clamping piece and the second clamping piece, so that the requirements of window frames and window sashes with different sizes are met.

Compared with the prior art, the utility model has the beneficial effects that:

the gravity of the window sash can be transmitted to the window frame through the window sash mounting seat, the third rotating shaft, the second bearing piece, the second rotating shaft, the first bearing piece, the first rotating shaft and the window frame mounting seat in sequence; each mounting seat and the bearing piece can rotate to the same vertical line and are not overlapped on the same horizontal plane, so that the window can be folded into a form of being mutually noninterfere in a window closing state and can be stored between the side walls of the window sash and the window frame, and normal window opening and closing are not affected.

Drawings

Fig. 1 is an overall schematic view of an auxiliary load-bearing hinge of the present utility model in a down-opening state assembled with a window sash frame.

Fig. 2 is an enlarged view of a portion of an auxiliary load bearing hinge of the present utility model assembled with a sash frame.

Fig. 3 is an overall structural view of an auxiliary load-bearing hinge of the present utility model.

Fig. 4 is a cross-sectional view of a first load bearing member area of an auxiliary load bearing hinge of the present utility model.

Fig. 5 is a sectional view of a window sash mounting base area of an auxiliary load-bearing hinge of the present utility model.

Fig. 6 is a schematic top view of a structure of the auxiliary load-bearing hinge of the present utility model in a state of opening a window when assembled with a window sash frame.

Fig. 7 is a schematic top view of the auxiliary bearing hinge of the present utility model in a closed window state assembled with a window sash frame.

Fig. 8 is an overall schematic view of an auxiliary load-bearing hinge of the present utility model in a closed window condition with a sash frame assembly.

Fig. 9 is a schematic overall structure of a second embodiment of an auxiliary load-bearing hinge of the present utility model.

Fig. 10 is a schematic structural view of an auxiliary load-bearing hinge according to a second embodiment of the present utility model mated with a window sash frame.

Fig. 11 is a schematic structural view of the first clamping piece and the second clamping piece in the second embodiment of the auxiliary bearing hinge of the present utility model.

Wherein, 1: a window frame mounting seat; 2: a window sash mounting base; 3: a first load bearing member; 4: a second load bearing member; 5: a first rotating shaft; 6: a second rotating shaft; 7: a third rotating shaft; 8: a window frame to be installed; 9: a window sash is arranged; 10: a sliding groove; 11: correcting the spring; 12: an adjusting bolt; 13: a clamping groove; 14: an annular groove; 15: a guide curved surface; 16: a sheath; 17: a first clamping piece; 18: a second clamping piece; 19: a horizontal chute; 20: a horizontal slider; 21: and a support rail.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings and examples:

the utility model will be further illustrated with reference to specific examples. It should be understood that the following examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model.

It is noted that when a component/feature is referred to as being "disposed on" another component/feature, it can be disposed directly on the other component/feature or intervening components/features may also be present. When a component/feature is referred to as being "connected/coupled" to another component/feature, it may be directly connected/coupled to the other component/feature or intervening components/features may also be present. The term "connected/coupled" as used herein may include electrical and/or mechanical physical connections/couplings. The term "comprises/comprising" when used herein means the presence of a feature, step or component/part, but does not exclude the presence or addition of one or more other features, steps or components/parts. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In addition, in the description of the present application, the terms "first," "second," and the like are used merely for descriptive purposes and to distinguish between similar objects, and there is no order of precedence between the two, nor should it be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

Embodiment case one:

as shown in fig. 1-8, an auxiliary bearing hinge comprises a window frame mounting seat 1, a window sash mounting seat 2, a first bearing piece 3 and a second bearing piece 4; the window frame mounting seat 1 is rotationally connected with the first bearing piece 3 through a first rotating shaft 5; the first bearing piece 3 is rotationally connected with the second bearing piece 4 through a second rotating shaft 6; the second bearing piece 4 is rotationally connected with the window sash mounting seat 2 through a third rotating shaft 7; the window frame mounting seat 1, the first bearing piece 3, the second bearing piece 4 and the window sash mounting seat 2 can rotate and fold into a gap between the window frame and the window sash in a window closing state, and are not overlapped on the same horizontal plane.

By adopting the technical scheme, the gravity of the window sash can be transmitted to the window frame through the window sash mounting seat 2, the third rotating shaft 7, the second bearing piece 4, the second rotating shaft 6, the first bearing piece 3, the first rotating shaft 5 and the window frame mounting seat 1 in sequence; each mounting seat and the bearing piece can rotate to the same vertical line and are not overlapped on the same horizontal plane, so that the window can be folded into a form of being mutually noninterfere in a window closing state and can be stored between the side walls of the window sash and the window frame, and normal window opening and closing are not affected.

As a modification, the bottom of the second load bearing member 4 is not lower than the top of the window frame mounting seat 1 and the first load bearing member 3, and the bottom of the window sash mounting seat 2 is not lower than the top of the second load bearing member 4.

By adopting the above technical scheme, the window frame mounting seat 1 supports the window sash through the second bearing piece 4 and the window sash mounting seat 2 which are arranged above.

As a modification, the top of the second bearing member 4 is not higher than the bottom of the window frame mounting seat 1 and the first bearing member 3, and the top of the window sash mounting seat 2 is not lower than the bottom of the second bearing member 4.

By adopting the above technical scheme, the window frame mounting seat 1 supports the window sash through the second bearing piece 4 and the window sash mounting seat 2 which are arranged below.

As a modification, the first bearing member 3 is rotatably connected with two second bearing members 4 through the top and bottom of the second rotating shaft 6; the second bearing piece 4 above the first bearing piece 3 is rotationally connected with the window sash mounting seat 2 above the second bearing piece through a third rotating shaft 7; the second bearing piece 4 below the first bearing piece 3 is rotationally connected with the window sash mounting seat 2 below the second bearing piece through the third rotating shaft 7.

By adopting the technical scheme, the window frame mounting seat 1 supports the window sash through the upper and lower second bearing pieces 4 and the window sash mounting seat 2. The second bearing piece 4 and the window sash mounting seat 2 are used at the upper part and the lower part, so that the stability of the window sash can be improved.

As a modification, the window frame mounting seat 1 is provided with a sliding groove 10 matched with the first rotating shaft 5, and the sliding groove 10 is a continuous curve through groove on a horizontal plane.

Through adopting above-mentioned technical scheme, first load-carrying member 3 can be through sliding tray 10 in the horizontal direction removal, and in the in-process of opening and closing the casement adaptation displacement makes the switch window smoother. The meaning of the continuous curved through groove of the sliding groove 10 in the horizontal plane is that the problem that the first rotating shaft 5 may be inclined in the case that the sliding groove 10 is a straight line is avoided.

As an improvement scheme, the first rotating shaft 5 is further provided with a correction spring 11, and two ends of the correction spring 11 are respectively abutted to the first bearing piece 3 and the window frame mounting seat 1.

By adopting the technical scheme, the correction spring 11 presses the first bearing piece 3 and the window frame, so that the first bearing piece 3 is assisted to maintain stable posture relative to the window frame, and the first rotating shaft 5 is kept vertical.

As an improvement scheme, the window sash mounting seat 2 is further provided with an adjusting bolt 12, and the adjusting bolt 12 is rotatably connected with the window sash mounting seat 2 through a vertical threaded hole and is arranged above the third rotating shaft 7.

Through adopting above-mentioned technical scheme, can be through rotatory adjusting bolt 12, the height of adjustment casement relative to third pivot 7.

As an improvement scheme, the window frame mounting seat 1/window sash mounting seat 2 is provided with a clamping groove 13 matched with the groove of the window frame/window sash; and is fixedly connected with the window frame/window sash through a bolt perpendicular to the groove.

By adopting the technical scheme, the stability of the connection between the window frame mounting seat 1/window sash mounting seat 2 and the window frame/window sash can be improved.

As a modification, the second rotating shaft 6 is provided with an annular groove 14; the window frame mounting seat 1 is provided with a guiding curved surface 15 matched with the annular groove 14.

By adopting the technical scheme, the guide curved surface 15 can guide the first rotating shaft 5 to smoothly slide through the annular groove 14, so that the fluency of opening and closing the window sash is improved.

Implementation case two:

as shown in fig. 9-11, a support rail is arranged on the bottom edge of the window frame, and the window frame mounting seat is movably arranged in the support rail; the first bearing piece is arranged between the bottom edge of the window frame and the bottom edge of the window sash in a sliding manner, and the bottom of the first bearing piece is propped against the top of the bottom edge of the window frame; the second bearing piece is rotatably connected with the first bearing piece and is arranged between the side edge of the window frame and the side edge of the window sash.

In one aspect, the window frame supports the sash through a path supporting the first load bearing member-the second load bearing member-the window frame mount, reducing the load on the window frame mount. On the other hand, in the window closing state, the first bearing piece and the window frame supporting seat are accommodated in the space between the window frame bottom edge and the window sash bottom edge, and the second bearing piece and the window sash mounting seat are accommodated in the space between the window frame side edge and the window sash side edge, so that normal opening and closing actions of the window are not hindered.

The first bearing piece is detachably provided with a sheath, and the sheath is clamped between the first bearing piece and the bottom edge of the window frame.

Can reduce the frictional force between first load-carrying member and the window frame base through the sheath, make the action of switch window more smooth and easy, use the softer sheath of material in addition, can avoid the wearing and tearing of first load-carrying member and window frame, only wearing and tearing sheath, also be convenient for change when the sheath wearing and tearing to a certain extent, do benefit to maintenance and increase life.

The second bearing piece comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are mutually bonded and fixed through bolts to form the second bearing piece. The contact surfaces of the first clamping piece and the second clamping piece are provided with a horizontal sliding groove and a horizontal sliding block which are horizontally arranged in a matching mode.

The second bearing piece can adjust the distance between the second rotating shaft and the third rotating shaft by adjusting the relative positions of the first clamping piece and the second clamping piece, so that the requirements of window frames and window sashes with different sizes are met.

The working principle of the second embodiment is as follows:

as shown in fig. 9-11, the frame mount at one end of the auxiliary load-bearing hinge is disposed on the support rail at the bottom edge of the frame and the sash mount at the other end is disposed on the side edge of the sash.

Wherein the bottom of the first bearing piece is supported by the bottom edge of the window frame, and is connected and supported to the side edge of the window sash through the second bearing piece and the window sash mounting seat. Thereby achieving the auxiliary supporting effect from the bottom edge of the window frame to the side edge of the window sash and being used as the supplement to the upper hinge and the lower hinge of the casement window.

The auxiliary bearing hinge comprises a window frame, a window frame base, a first bearing piece, a second bearing piece, a rotating shaft, a window frame mounting seat and a window frame, wherein the window frame mounting seat and the first bearing piece are rotatably connected through the rotating shaft, the window frame mounting seat and the first bearing piece are maintained to be located above the window frame base and below the window sash base on the vertical height, on one hand, no obstruction is generated in the window opening and closing process, and the window frame mounting seat and the first bearing piece are all contained in a gap between the window frame base and the window sash base in the window closing state. The second bearing piece and the window sash mounting seat are kept between the side edge of the window frame and the side edge of the window sash in the horizontal position in the same way, so that on one hand, the window opening and closing process can not be hindered, and the second bearing piece and the window sash mounting seat can be contained in a gap between the side edge of the window frame and the side edge of the window sash in the window closing state.

The first bearing piece and the window frame are clamped between the bottom edges of the first bearing piece and the window frame, the sheath is preferably made of relatively soft materials such as plastics or rubber, so that the metal window frame and the first bearing piece are prevented from being worn and worn in the window opening and closing process, and the sheath can be recovered for use only by removing and replacing the sheath after being worn to the extent that the use is affected, thereby reducing loss and prolonging service life.

The second bearing piece is formed by attaching and fixing a first clamping piece and a second clamping piece, wherein as shown in an attached drawing 11, a horizontal sliding groove is formed in the first clamping piece, and a horizontal sliding block matched with the horizontal sliding groove is arranged in the second clamping piece, so that the second clamping piece can move along the horizontal sliding groove in the horizontal direction relative to the first clamping piece by means of the horizontal sliding block. In this way, the width of the second bearing member as a whole can be adjusted, and more specifically, as shown in fig. 11, the horizontal distance between the second rotating shaft and the third rotating shaft can be adjusted, so as to adapt to window sashes and window frames with different sizes.

In summary, after reading the present document, those skilled in the art may make various other corresponding transformation schemes according to the technical scheme and the technical concept of the present utility model without creative mental effort, and different application scenarios all belong to the scope of the present utility model.

Claims (9)

1. An auxiliary bearing hinge is characterized by comprising a window frame mounting seat (1), a window sash mounting seat (2), a first bearing piece (3) and a second bearing piece (4); the window frame mounting seat (1) is rotationally connected with the first bearing piece (3) through a first rotating shaft (5); the first bearing piece (3) is rotationally connected with the second bearing piece (4) through a second rotating shaft (6); the second bearing piece (4) is rotationally connected with the window sash mounting seat (2) through a third rotating shaft (7); the window frame mounting seat (1), the first bearing piece (3), the second bearing piece (4) and the window sash mounting seat (2) can rotate and fold into a gap between the window frame and the window sash in a window closing state.

2. Auxiliary load-bearing hinge according to claim 1, characterized in that the first load-bearing member (3) is rotatably connected with two second load-bearing members (4) through the top and bottom of the second rotation shaft (6); the second bearing piece (4) above the first bearing piece (3) is rotationally connected with the window sash mounting seat (2) above the second bearing piece through a third rotating shaft (7); the second bearing piece (4) below the first bearing piece (3) is rotationally connected with the window sash mounting seat (2) below the second bearing piece through the third rotating shaft (7).

3. The auxiliary load-bearing hinge according to claim 1, characterized in that the window frame mounting seat (1) is provided with a sliding groove (10) matched with the first rotating shaft (5), and the sliding groove (10) is a continuous curve through groove on a horizontal plane.

4. An auxiliary load-bearing hinge as claimed in claim 1, characterized in that the sash mounting base (2) is further provided with an adjusting bolt (12), and the adjusting bolt (12) is rotatably connected with the sash mounting base (2) through a vertical threaded hole and is arranged above the third rotating shaft (7).

5. Auxiliary load-bearing hinge according to claim 1, characterized in that the second rotation shaft (6) is provided with an annular groove (14); the window frame mounting seat (1) is provided with a guide curved surface (15) matched with the annular groove (14).

6. The auxiliary load-bearing hinge according to claim 1, wherein the bottom of the first load-bearing member (3) is arranged against the bottom edge of the window frame, and the window frame mounting seat (1) is arranged on the bottom edge of the window frame in a sliding manner; the bottom edge of the window frame sequentially supports the window sashes through the stress of the first bearing piece (3), the second bearing piece (4) and the window sashes mounting seat (2).

7. Auxiliary load-bearing hinge according to claim 6, characterized in that the first load-bearing member (3) is detachably provided with a sheath which is sandwiched by the first load-bearing member (3) and the window frame bottom edge.

8. The auxiliary bearing hinge according to claim 6, wherein a support rail (21) is provided on the bottom edge of the window frame, and the window frame mounting seat (1) is movably arranged in the support rail (21); the first bearing piece (3) is arranged between the bottom edge of the window frame and the bottom edge of the window sash in a sliding manner, and the bottom of the first bearing piece (3) is propped against the top of the bottom edge of the window frame; the second bearing piece (4) is rotationally connected with the first bearing piece (3) and is arranged between the side edge of the window frame and the side edge of the window sash.

9. The auxiliary load-bearing hinge according to claim 6, wherein the second load-bearing member (4) comprises a first clamping piece (17) and a second clamping piece (18), the first clamping piece (17) and the second clamping piece (18) being mutually attached and fastened by bolts to form the second load-bearing member (4); the contact surfaces of the first clamping piece (17) and the second clamping piece (18) are provided with a horizontal sliding groove (19) and a horizontal sliding block (20) which are horizontally arranged in a matching mode.