Lower hinge for broken bridge aluminum door and window

Abstract

The utility model relates to the technical field of hardware, in particular to a lower hinge for broken bridge aluminum doors and windows, which comprises a main connecting arm, an auxiliary connecting arm and a hinge arm component hinged between the main connecting arm and the auxiliary connecting arm. A first eccentric rivet used for adjusting the distance between the axis A and the axis B when the lower hinge is closed is arranged on the hinge arm assembly, an adjusting plate is arranged on the main connecting arm, one end of the adjusting plate is located between the first hinge arm and the main connecting arm and hinged to the first hinge arm and the main connecting arm, and a first connecting nail is arranged at the hinged position. The other end of the adjusting plate is connected with the main connecting arm through a second eccentric rivet, the second eccentric rivet is rotated so as to adjust the position of the first connecting nail in the first adjusting groove, and the window sash adjusting device has the advantage that the relative position of the window sash in the window frame can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware, in particular to a lower hinge for thermally-insulated aluminum doors and windows. Background Art

[0002] When installing the thermally-broken aluminum doors and windows, invisible lower hinges are often used as hardware connectors. A utility model patent with patent number CN209817697U discloses a novel hinge, comprising a main connecting arm (1), a secondary connecting arm (2) and a hinge arm assembly hinged therebetween. The main connecting arm (1) and the secondary connecting arm (2) are connected by the hinge arm assembly for opening and closing. When the hinge is opened, the secondary connecting arm (2) swings outward relative to the main connecting arm (1) to open. When the hinge is closed, the secondary connecting arm (2) swings inward relative to the main connecting arm (1) to close. The invention is characterized in that the axis of the main connecting arm (1) in the length direction is the A axis, and the axis of the secondary connecting arm (2) in the length direction is the B axis. The hinge arm assembly is provided with an adjusting device for adjusting the distance between the A axis and the B axis when the hinge is closed. The hinge arm assembly comprises a first hinge arm (3) and a second hinge arm (4) respectively hinged to the main connecting arm (1) and the secondary connecting arm (2). The first hinge arm (3) and the second hinge arm (4) are cross-hinged via a fulcrum.

[0003] The above hinges have the following disadvantages in the actual production process: 1. The adjustment device can only adjust the distance between the A axis and the B axis when the hinge is closed, and can only achieve position adjustment in one direction. However, when installing the window sash, refer to the attached manual. Figure 1 It can be seen that the window sash needs to be adjusted in two directions to ensure the sealing of the window sash; 2. Figure 2 The end of the second hinge arm is slidably connected to the auxiliary connecting arm. When the window sash is opened to any angle, the window sash is prone to shaking due to the lack of a positioning structure. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a lower hinge for a thermally-insulated aluminum door and window, which can adjust the relative position of the window sash in the window frame, in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lower hinge for a thermally broken aluminum door and window, comprising a main connecting arm, a secondary connecting arm and a hinge arm assembly hinged therebetween, the main connecting arm and the secondary connecting arm being connected by the hinge arm assembly for opening and closing, when the lower hinge is opened, the secondary connecting arm swings outwardly relative to the main connecting arm to open, when the lower hinge is closed, the secondary connecting arm swings inwardly relative to the main connecting arm to close, the axis in the length direction of the main connecting arm is axis A, the axis in the length direction of the secondary connecting arm is axis B, the hinge arm assembly comprises a first hinge arm and a second hinge arm respectively hinged to the main connecting arm and the secondary connecting arm, the first hinge arm and The second hinge arm is cross-hinged through a fulcrum, and a first eccentric rivet is provided on the fulcrum of the cross-hinging of the two, which is used to adjust the distance between the A axis and the B axis when the lower hinge is closed, characterized in that: an adjustment plate is provided on the main connecting arm, and the adjustment plate coincides with the main connecting arm, one end of the adjustment plate is located between the first hinge arm and the main connecting arm, and is respectively hinged to the first hinge arm and the main connecting arm, and a first connecting nail is provided at the hinge, and the other end of the adjustment plate is connected to the main connecting arm through a second eccentric rivet, and a first adjustment groove for installing the first connecting nail is provided on the main connecting arm, and the second eccentric rivet is rotated to adjust the position of the first connecting nail in the first adjustment groove.

[0006] The utility model with the above-mentioned characteristics: by arranging an adjustment plate and a second eccentric rivet on the main connecting arm, the second eccentric rivet can adjust the position of the first connecting nail in the first adjusting groove when the lower hinge is closed, and then adjust the relative distance between the window sash and the window frame when the window sash is closed; by arranging the first eccentric rivet on the hinge arm assembly, the distance between the A axis and the B axis is adjusted when the lower hinge is closed, that is, the relative position of the main connecting arm and the auxiliary connecting arm is adjusted when the lower hinge is closed, and then the relative distance between the window sash and the window frame is adjusted; the combination of the first eccentric rivet and the second eccentric rivet can meet the position adjustment of the window sash in two directions, further ensure the sealing of the window sash, and prevent the problems of air leakage and water leakage.

[0007] A further configuration of the utility model is: the adjusting head of the first eccentric rivet is rotatably connected to the first hinge arm, the eccentric shaft of the first eccentric rivet is rotatably connected to the second hinge arm, the adjusting head of the second eccentric rivet is connected to the adjusting plate, and the eccentric shaft of the second eccentric rivet is connected to the main connecting arm.

[0008] The utility model with the above-mentioned characteristics: the adjusting head of the first eccentric rivet is set on the first hinge arm, and the adjusting head of the second eccentric rivet is set on the adjusting plate. After the lower hinge is installed on the window frame, the lower hinge can be unfolded and a hexagonal wrench can be used to adjust the distance between the window sash and the window frame, which is easy to operate.

[0009] A further configuration of the utility model is that a shift piece is provided at the end of the second hinge arm, a shift groove slidably connected to the shift piece is provided on the auxiliary connecting arm, the shift piece is mounted on the second hinge arm through a second connecting nail, the shift piece comprises a separately arranged shift seat body and a shift block body placed in the shift seat body, the shift seat body is made of plastic material, and two fork feet are respectively provided at both ends thereof, a side of the fork foot in contact with the wall of the shift groove is an arc-shaped wall protruding outward, and a plurality of evenly distributed inwardly recessed arc-shaped grooves are provided in the wall of the shift groove.

[0010] The utility model with the above-mentioned characteristics: by arranging a shift piece at the end of the second hinge arm, the second hinge arm has a certain positioning function during the expansion or closing process, so that the hinge can pause at any angle within the angle range of 0-90°, thereby realizing different opening angles of the window sash; the shift seat body is made of plastic material, so that the shift seat body has a certain elasticity and toughness, and can be deformed when squeezed by the shift groove, while absorbing impact and improving the life of the lower hinge.

[0011] A further configuration of the utility model is that: the main connecting arm is provided with a strip track groove distributed along the length direction, and the end of the second hinge arm is provided with a third connecting nail which can slide back and forth in the track groove.

[0012] The utility model with the above-mentioned characteristics: by setting a strip-shaped track groove on the main connecting arm, when the second hinge arm is expanded or closed, its end moves in the track groove, and in the process from closing to expanding the lower hinge, the angle between the B axis and the A axis changes from 0 to 90°, so that the window sash can be opened and closed arbitrarily within the angle range of 0 to 90°.

[0013] A further configuration of the utility model is that a strip-shaped limiting groove is provided on the main connecting arm, the limiting groove is located on the second eccentric rivet side, and a limiting protrusion is provided on one end of the adjustment plate facing the main connecting arm, and the limiting protrusion is placed in the limiting groove.

[0014] The utility model with the above-mentioned features limits the moving range of the adjustment plate, that is, limits the adjustment spacing of the window sash, by arranging the limiting groove on the main connecting arm.

[0015] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the upper structure of an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the lower structure of an embodiment of the utility model.

[0018] Figure 3 It is an exploded view of the shift member of the embodiment of the utility model.

[0019] Figure 4 It is a cross-sectional view of the first hinge arm and the second hinge arm of an embodiment of the utility model.

[0020] Figure 5 It is a cross-sectional view of the main connecting arm and the adjustment plate of an embodiment of the utility model. DETAILED DESCRIPTION

[0021] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0022] like Figure 1-5 The lower hinge for a thermally-broken aluminum door and window shown in the figure comprises a main connecting arm 1, a secondary connecting arm 2 and a hinge arm assembly hinged therebetween, the main connecting arm 1 and the secondary connecting arm 2 being connected in opening and closing via the hinge arm assembly, when the lower hinge is opened, the secondary connecting arm 2 swings outwardly relative to the main connecting arm 1 to open, when the lower hinge is closed, the secondary connecting arm 2 swings inwardly relative to the main connecting arm 1 to close, the axis of the main connecting arm 1 in the length direction is the A axis, the axis of the secondary connecting arm 2 in the length direction is the B axis, the hinge arm assembly comprises a first hinge arm 3 and a second hinge arm 4 hinged to the main connecting arm 1 and the secondary connecting arm 2 respectively, the main connecting arm 1 is provided with a strip track groove 13 distributed along the length direction, the end of the second hinge arm 3 is provided with a third connecting nail 9 which can slide back and forth in the track groove 13, the first hinge arm 3 and the second hinge arm 4 are cross-hinged via a fulcrum, the fulcrum where the two are cross-hinged is provided with a first eccentric rivet 5 for adjusting the distance between the A axis and the B axis when the lower hinge is closed, the adjustment head of the first eccentric rivet 5 51 is rotatably connected to the first hinge arm 3, the eccentric shaft 52 of the first eccentric rivet 5 is rotatably connected to the second hinge arm 4, an adjusting plate 6 is provided on the main connecting arm 1, the adjusting plate 6 coincides with the main connecting arm 1, one end of the adjusting plate 6 is located between the first hinge arm 3 and the main connecting arm 1, and is respectively hinged to the first hinge arm 3 and the main connecting arm 1, a first connecting nail 7 is provided at the hinge, the other end of the adjusting plate 6 is connected to the main connecting arm 1 through a second eccentric rivet 8, and the main connecting arm 1 is provided with a first connecting nail 7 Install the first adjusting groove 11, rotate the second eccentric rivet 8 to adjust the position of the first connecting nail 7 in the first adjusting groove 11, the adjusting head 51 of the second eccentric rivet 8 is connected to the adjusting plate 6, the eccentric shaft 52 of the second eccentric rivet 8 is connected to the main connecting arm 1, and the main connecting arm 1 is provided with a strip limiting groove 12, the limiting groove 12 is located on the side of the second eccentric rivet 8, and a limiting protrusion 61 is provided at one end of the adjusting plate 6 facing the main connecting arm 1, and the limiting protrusion 61 is placed in the limiting groove 12.

[0023] A shift piece 10 is provided at the end of the second hinge arm 4, and a shift groove 21 slidably connected to the shift piece 10 is provided on the auxiliary connecting arm 2. The shift piece 10 is installed on the second hinge arm 4 through a second connecting nail 30. The shift piece 10 includes a separately arranged shift seat body 101 and a shift block body 102 placed in the shift seat body 101. The shift seat body 101 is made of plastic material, and two fork feet 103 are respectively provided at both ends thereof. The side where the fork feet 103 contacts the wall of the shift groove 21 is an outwardly protruding arc wall 104, and a plurality of evenly distributed inwardly recessed arc grooves 22 are provided in the wall of the shift groove 21.

[0024] During the actual installation process, the main connecting arm is installed in the window frame and the window sash is installed on the secondary connecting arm. After the window sash is closed, there is a gap between the window sash and the window frame. Therefore, by rotating the first eccentric rivet and the second eccentric rivet, the distance between the window sash and the window frame can be adjusted; since the first eccentric rivet acts as an adjustable fulcrum for the first hinge arm and the second hinge arm, rotating the first eccentric rivet can change the crossing position of the first hinge arm and the second hinge arm when the lower hinge is closed, thereby changing the relative position of the main connecting arm and the secondary connecting arm; rotating the second eccentric rivet can adjust the position of the first connecting nail in the first adjustment groove, drive the position of the first hinge arm to change, thereby changing the relative position of the secondary connecting arm.

Claims

1. A lower hinge for a thermally-broken aluminum door and window, comprising a main connecting arm, a secondary connecting arm and a hinge arm assembly hinged therebetween, the main connecting arm and the secondary connecting arm being connected by the hinge arm assembly, when the lower hinge is opened, the secondary connecting arm swings outward relative to the main connecting arm to open, when the lower hinge is closed, the secondary connecting arm swings inward relative to the main connecting arm to close, the axis in the length direction of the main connecting arm is the A axis, the axis in the length direction of the secondary connecting arm is the B axis, the hinge arm assembly comprises a first hinge arm and a second hinge arm hinged to the main connecting arm and the secondary connecting arm respectively, the first hinge arm and the second hinge arm being cross-hinged through a fulcrum, the fulcrum at which the two are cross-hinged is provided with a first eccentric rivet for adjusting the distance between the A axis and the B axis when the lower hinge is closed, characterized in that: An adjustment plate is provided on the main connecting arm, and the adjustment plate coincides with the main connecting arm. One end of the adjustment plate is located between the first hinge arm and the main connecting arm, and is hinged to the first hinge arm and the main connecting arm respectively. A first connecting nail is provided at the hinge. The other end of the adjustment plate is connected to the main connecting arm through a second eccentric rivet. A first adjustment groove for installing the first connecting nail is provided on the main connecting arm. The second eccentric rivet is rotated to adjust the position of the first connecting nail in the first adjustment groove.

2. The lower hinge for thermally-insulated aluminum doors and windows according to claim 1, characterized in that: The adjusting head of the first eccentric rivet is rotatably connected to the first hinge arm, the eccentric shaft of the first eccentric rivet is rotatably connected to the second hinge arm, the adjusting head of the second eccentric rivet is connected to the adjusting plate, and the eccentric shaft of the second eccentric rivet is connected to the main connecting arm.

3. The lower hinge for thermally-insulated aluminum doors and windows according to claim 1, characterized in that: A shift piece is provided at the end of the second hinge arm, a shift groove slidably connected to the shift piece is provided on the auxiliary connecting arm, the shift piece is installed on the second hinge arm through a second connecting nail, the shift piece includes a separately arranged shift seat body and a shift block body placed in the shift seat body, the shift seat body is made of plastic material, and two fork feet are respectively provided at both ends thereof, the side of the fork feet contacting the wall of the shift groove is an arc-shaped wall convex outwardly, and a plurality of evenly distributed inwardly concave arc-shaped grooves are provided in the wall of the shift groove.

4. A lower hinge for thermally-insulated aluminum doors and windows according to claim 1 or 2, characterized in that: The main connecting arm is provided with a strip track groove distributed along the length direction, and the end of the second hinge arm is provided with a third connecting nail which can slide back and forth in the track groove.

5. The lower hinge for thermally-insulated aluminum doors and windows according to claim 1, characterized in that: The main connecting arm is provided with a strip-shaped limiting groove, the limiting groove is located on the second eccentric rivet side, and the end of the adjustment plate facing the main connecting arm is provided with a limiting protrusion, and the limiting protrusion is placed in the limiting groove.

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