Folding door and window connecting device and folding door and window seat

Abstract

The utility model discloses a folding door and window connecting device which comprises a door and window frame fixing piece, a first door and window sash connecting piece, a second door and window sash connecting piece, a connecting rod component, a first reinforcing component and a second reinforcing component. The second end of the first door and window sash connecting piece is pivoted to the first end of the second door and window sash connecting piece, the second end of the second door and window sash connecting piece is pivoted to the first end of the connecting rod component, and the second end of the connecting rod component is pivoted to the second end of the door and window frame fixing piece. The first reinforcing component is pivoted between the connecting rod component and the first door and window sash connecting piece, and the second reinforcing component is pivoted between the first reinforcing component and the second door and window sash connecting piece. Thus, the strength of the device is improved on the whole, the influence of gravity can be better overcome, the movement track of the door and window sash is more stable, and noise is reduced. The utility model further discloses a folding door and window seat.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, in particular to a folding door and window connecting device and a folding door and window seat. Background Art

[0002] In the existing folding door and window structure, a four-bar linkage is generally used to realize the folding of two door and window fans. However, due to the influence of the gravity of the door and window fans, the connection strength of the simple four-bar linkage is relatively low and it is easy to shake, resulting in unstable movement and easy generation of noise during the opening and closing of the door and window fans.

[0003] Therefore, there are also some existing technologies that add some additional connecting rods in the four-bar linkage to strengthen the strength of the four-bar linkage. However, the added connecting rods are all parallel to the door and window frame fixing parts, and each added connecting rod acts independently. It mainly compensates for the stall torque in the four-bar linkage and acts as a tie rod for the correct operation of the mechanism. The stabilizing effect is relatively limited. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the existing technology, the utility model provides a folding door and window connecting device and a folding door and window seat, which add two reinforcing members that can be pivotally connected to each other, increasing the strength of the device as a whole, so that during the opening and closing of the door and window fans, especially when the door and window fans are opened to half, it can better overcome the influence of gravity, make the movement trajectory of the door and window fans more stable, and reduce the generation of noise.

[0005] The technical solution adopted by the utility model to solve its problems is:

[0006] A folding door and window connecting device includes: a door and window frame fixing part, a first door and window fan connecting part, a second door and window fan connecting part, a connecting rod member, a first reinforcing member, and a second reinforcing member. Among them,

[0007] The first end of the first door and window fan connecting part is pivotally connected to the first end of the door and window frame fixing part, the second end of the first door and window fan connecting part is pivotally connected to the first end of the second door and window fan connecting part, the second end of the second door and window fan connecting part is pivotally connected to the first end of the connecting rod member, and the second end of the connecting rod member is pivotally connected to the second end of the door and window frame fixing part;

[0008] The first reinforcing member is pivotally connected between the connecting rod member and the first door and window fan connecting part, and the second reinforcing member is pivotally connected between the first reinforcing member and the second door and window fan connecting part.

[0009] Further, the first end of the first reinforcing member is pivotally connected to the first end of the first door and window fan connecting part, and the second end of the first reinforcing member is pivotally connected to the second end of the connecting rod member; the first end of the second reinforcing member is pivotally connected to the first end of the first reinforcing member, and the second end of the second reinforcing member is pivotally connected to the first end of the second door and window fan connecting part.

[0010] Further, the window and door frame fixing member, the first window and door sash connecting member, the second window and door sash connecting member, and the link member form a first parallelogram linkage mechanism, the window and door frame fixing member, the first window and door sash connecting member, the first reinforcing member, and the link member form a second parallelogram linkage mechanism, and the first window and door sash connecting member, the second window and door sash connecting member, the second reinforcing member, and the first reinforcing member form a third parallelogram linkage mechanism.

[0011] Further, the distance between the pivot axis between the first window and door sash connecting member and the window and door frame fixing member and the pivot axis between the first window and door sash connecting member and the second window and door sash connecting member is L1, and the distance between the pivot axis between the second reinforcing member and the first reinforcing member and the pivot axis between the second reinforcing member and the second window and door sash connecting member is L2, and L1 is not equal to L2.

[0012] Further, it includes a closed state and a folded state. When in the closed state, the first window and door sash connecting member and the second window and door sash connecting member are arranged relatively unfolded, and the first reinforcing member and the second reinforcing member are arranged relatively folded; when in the folded state, the first window and door sash connecting member and the second window and door sash connecting member are arranged relatively folded, and the first reinforcing member and the second reinforcing member are arranged relatively unfolded.

[0013] Further, the plane where the pivot axis between the window and door frame fixing member and the first window and door sash connecting member and the pivot axis between the window and door frame fixing member and the link member are located is the first plane, the plane where the pivot axis between the window and door frame fixing member and the first window and door sash connecting member and the pivot axis between the first window and door sash connecting member and the second window and door sash connecting member are located is the second plane, and the plane where the pivot axis between the second reinforcing member and the first reinforcing member and the pivot axis between the second reinforcing member and the second window and door sash connecting member are located is the third plane. When in the folded state, the angle between the second plane and the first plane is an obtuse angle in the direction of rotating and opening along the first window and door sash connecting member, and the third plane is parallel to the first plane.

[0014] Further, a connecting ear for pivotally connecting the window and door frame fixing member is provided on the first window and door sash connecting member, and the connecting ear protrudes towards the window and door frame fixing member, so that a spaced space is formed between the first window and door sash connecting member and the window and door frame fixing member when in the closed state, and the first reinforcing member and the second reinforcing member are arranged relatively folded in the spaced space.

[0015] Further, the connecting ear is formed by secondary bending of the plate body of the window and door frame fixing member.

[0016] Further, the window and door frame fixing member, the first reinforcing member, the second reinforcing member, and the first window and door sash connecting member are stacked in sequence. The second window and door sash connecting member is located on the side of the first window and door sash connecting member away from the window and door frame fixing member. The second reinforcing member includes a first flat section, a first inclined section, and a second flat section connected in sequence. One end of the first flat section away from the first inclined section is used for pivoting connection with the first reinforcing member, and one end of the second flat section away from the first inclined section is used for pivoting connection with the second window and door sash connecting member.

[0017] Further, the connecting rod member includes a third flat section, a second inclined section, and a fourth flat section connected in sequence. One end of the third flat section away from the second inclined section is used for pivoting connection with the second window and door sash connecting member, and one end of the fourth flat section away from the second inclined section is used for pivoting connection with the window and door frame fixing member and the first reinforcing member. A notch is provided on the third flat section, and the notch is used to avoid the pivoting area between the first window and door sash connecting member and the first reinforcing member in the folded state.

[0018] Based on the same inventive concept, the present utility model also discloses a folding window and door seat, which includes a window and door frame, a first window and door sash, a second window and door sash, and the above-mentioned folding window and door connecting device. The window and door frame fixing member is fixedly connected to the window and door frame, the first window and door sash connecting member is fixedly connected to the first window and door sash, and the second window and door sash connecting member is fixedly connected to the second window and door sash.

[0019] Further, the first window and door sash is provided with a first retaining wall, and the second window and door sash is provided with a second retaining wall. The first window and door sash connecting member is located on the side of the first retaining wall facing the opening of the window and door frame, and the second window and door sash connecting member is located on the side of the second retaining wall facing the opening of the window and door frame.

[0020] In summary, the folding window and door connecting device and the folding window and door seat provided by the present utility model have the following technical effects:

[0021] 1) By using the first reinforcing member to pivot between the connecting rod member and the first window and door sash connecting member, and using the second reinforcing member to pivot between the first reinforcing member and the second window and door sash connecting member. In this way, in addition to making up for the stall torque and acting as a tie rod for correct operation, the second reinforcing member can also overcome the influence of the gravity moments of the two window and door sashes on the first window and door sash connecting member and the connecting rod member, thereby increasing the strength of the device as a whole, making the movement trajectory of the window and door sashes more stable, and reducing the generation of noise;

[0022] 2) After installing two door and window sashes, the gravitational moment of the first door and window sash acts on the first door and window sash connecting member, a part of the gravitational moment of the second door and window sash is dispersed and acts on the first door and window sash connecting member, and another part of the gravitational moment of the second door and window sash is dispersed and acts on the connecting rod member. Therefore, the requirement for the support strength on the side of the first door and window sash connecting member is relatively high. Preferably, the second reinforcing member is biased closer to the first door and window sash connecting member, so that the second reinforcing member can better overcome the superposition of the gravitational moments of the two door and window sashes. In particular, since L1 and L2 are not equal, the second reinforcing member and the first door and window sash connecting member form two unequal elastic bows that interact with each other. Furthermore, the deformation amplitude of the second reinforcing member and the first door and window sash connecting member is small or not easily deformed, the support strength is better, and the movement trajectory is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. 1 is one of the structural schematic diagrams of the folding door and window seat according to an embodiment of the present utility model;

[0024] Figure 2 FIG. 2 is another structural schematic diagram of the folding door and window seat according to an embodiment of the present utility model;

[0025] Figure 3 FIG. 3 is a third structural schematic diagram of the folding door and window seat according to an embodiment of the present utility model;

[0026] Figure 4 is Figure 2 the enlarged partial view of part A shown in FIG.

[0027] Figure 5 FIG. 4 is the structural schematic diagram of the folding door and window connecting device according to an embodiment of the present utility model;

[0028] Figure 6 FIG. 5 is the exploded schematic diagram of the folding door and window connecting device according to an embodiment of the present utility model;

[0029] Figure 7 FIG. 6 is the structural schematic diagram of the folding door and window connecting device in the closed state according to an embodiment of the present utility model;

[0030] Figure 8 FIG. 7 is the structural schematic diagram of the folding door and window connecting device in the semi-open state according to an embodiment of the present utility model;

[0031] Figure 9 FIG. 8 is the structural schematic diagram of the folding door and window connecting device in the folded state according to an embodiment of the present utility model.

[0032] Among them, the meanings of the reference numerals are as follows:

[0033] 100, Folding Door and Window Connecting Device; 1, Door and Window Frame Fixing Piece; 2, First Door and Window Sash Connecting Piece; 21, Connecting Ear; 3, Second Door and Window Sash Connecting Piece; 4, Link Member; 41, Third Flat Section; 42, Second Oblique Section; 43, Fourth Flat Section; 44, Notch; 5, First Reinforcing Member; 6, Second Reinforcing Member; 61, First Flat Section; 62, First Oblique Section; 63, Second Flat Section; 200, Door and Window Frame; 201, Upper Horizontal Frame; 202, Vertical Frame; 300, First Door and Window Sash; 301, First Stop Wall; 400, Second Door and Window Sash; 401, Second Stop Wall; S1, First Axis; S2, Second Axis; S3, Third Axis; S4, Fourth Axis; S5, Fifth Axis; S6, Sixth Axis; S7, Seventh Axis; S8, Eighth Axis. Detailed Implementation Manner

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0037] Refer to Figures 5 to 9, the present utility model discloses a folding door and window connection device 100, including: a door and window frame fixing member 1, a first door and window sash connecting member 2, a second door and window sash connecting member 3, a connecting rod member 4, a first strengthening member 5, and a second strengthening member 6. The first end of the first door and window sash connecting member 2 is pivotally connected to the first end of the door and window frame fixing member 1, the second end of the first door and window sash connecting member 2 is pivotally connected to the first end of the second door and window sash connecting member 3, the second end of the second door and window sash connecting member 3 is pivotally connected to the first end of the connecting rod member 4, and the second end of the connecting rod member 4 is pivotally connected to the second end of the door and window frame fixing member 1; specifically, the pivot axis between the first door and window sash connecting member 2 and the door and window frame fixing member 1 is the first axis S1, the pivot axis between the first door and window sash connecting member 2 and the second door and window sash connecting member 3 is the second axis S2, the pivot axis between the second door and window sash connecting member 3 and the connecting rod member 4 is the third axis S3, and the pivot axis between the connecting rod member 4 and the door and window frame fixing member 1 is the fourth axis S4. The first axis S1, the second axis S2, the third axis S3, and the fourth axis S4 are arranged at intervals of two, so that the door and window frame fixing member 1, the first door and window sash connecting member 2, the second door and window sash connecting member 3, and the connecting rod member 4 can form a four-bar linkage mechanism.

[0038] The first strengthening member 5 is pivotally connected between the connecting rod member 4 and the first door and window sash connecting member 2. Preferably, the first end of the first strengthening member 5 is pivotally connected to the first end of the first door and window sash connecting member 2, and the second end of the first strengthening member 5 is pivotally connected to the second end of the connecting rod member 4; specifically, the pivot axis between the first strengthening member 5 and the first door and window sash connecting member 2 is the fifth axis S5, and the pivot axis between the first strengthening member 5 and the connecting rod member 4 is the sixth axis S6. The first axis S1, the fourth axis S4, the sixth axis S6, and the fifth axis S5 are arranged at intervals of two, so that the door and window frame fixing member 1, the first door and window sash connecting member 2, the first strengthening member 5, and the connecting rod member 4 can also form a four-bar linkage mechanism.

[0039] The second strengthening member 6 is pivotally connected between the first strengthening member 5 and the second door and window sash connecting member 3. Preferably, the first end of the second strengthening member 6 is pivotally connected to the first end of the first strengthening member 5, and the second end of the second strengthening member 6 is pivotally connected to the first end of the second door and window sash connecting member 3; specifically, the pivot axis between the second strengthening member 6 and the first strengthening member 5 is the seventh axis S7, and the pivot axis between the second strengthening member 6 and the second door and window sash connecting member 3 is the eighth axis S8. The second axis S2, the fifth axis S5, the seventh axis S7, and the eighth axis S8 are arranged at intervals of two, so that the first door and window sash connecting member 2, the second door and window sash connecting member 3, the second strengthening member 6, and the first strengthening member 5 can also form a four-bar linkage mechanism.

[0040] Refer to Figures 1 to 4, the present utility model also discloses a folding door and window seat applied with the folding door and window connection device 100. The folding door and window seat can specifically be a door structure or a window structure. Specifically, the folding door and window seat includes a door and window frame 200, a first door and window sash 300, a second door and window sash 400, and the folding door and window connection device 100. The door and window frame fixing member 1 is fixedly connected to the door and window frame 200, the first door and window sash connecting member 2 is fixedly connected to the first door and window sash 300, and the second door and window sash connecting member 3 is fixedly connected to the second door and window sash 400.

[0041] Taking the case where the folding door and window seat is specifically a door structure as an example, preferably, there is one folding door and window connection device 100. At this time, the folding door and window connection device 100 is connected between the upper horizontal frame 201 of the door and window frame 200, the upper cross beam of the first door and window sash 300, and the upper cross beam of the second door and window sash 400. Specifically, the door and window frame fixing member 1 is fixedly connected below the upper horizontal frame 201 of the door and window frame 200, the first door and window sash connecting member 2 is fixedly connected to the upper cross beam of the first door and window sash 300, the second door and window sash connecting member 3 is fixedly connected to the upper cross beam of the second door and window sash 400. One side of the first door and window sash 300 can also be connected to one of the vertical frames 202 of the door and window frame 200 through a hinge, and the other side of the first door and window sash 300 can be connected to one side of the second door and window sash 400 through a hinge.

[0042] Of course, it should be noted that when the folding door and window seat is specifically a window structure, there can be one or two folding door and window connection devices 100, depending on the actual design requirements; when there are two folding door and window connection devices 100 in the window structure, the two folding door and window connection devices 100 can be arranged vertically opposite to each other. At this time, the hinge structure between the first door and window sash 300 and the door and window frame 200 and the hinge structure between the first door and window sash 300 and the second door and window sash 400 can be selectively cancelled.

[0043] For the convenience of description, the folding door and window connection device 100 also includes a closed state and a folded state. Refer to Figure 1 and Figure 7 . When in the closed state, the first door and window sash connecting member 2 and the second door and window sash connecting member 3 are arranged relatively unfolded, so that the first door and window sash 300 and the second door and window sash 400 are relatively unfolded to seal the opening of the door and window frame 200, thereby separating the spaces inside and outside the two sides of the door and window frame 200, and the first strengthening member 5 and the second strengthening member 6 are arranged relatively folded; refer to Figure 3 and Figure 9 . When in the folded state, the first door and window sash connecting member 2 and the second door and window sash connecting member 3 are arranged relatively folded, so that the first door and window sash 300 and the second door and window sash 400 are relatively folded and no longer block the opening of the door and window frame 200, thereby making the spaces inside and outside the two sides of the door and window frame 200 communicate, and the first strengthening member 5 and the second strengthening member 6 are arranged relatively unfolded.

[0044] Refer to Figure 4 To avoid the exposure of the folding door and window connecting device 100, preferably, in the folding door and window seat, the first door and window sash 300 is provided with a first blocking wall 301, and the second door and window sash 400 is provided with a second blocking wall 401. The first door and window sash connecting member 2 is located on the side of the first blocking wall 301 facing the opening of the door and window frame 200, and the second door and window sash connecting member 3 is located on the side of the second blocking wall 401 facing the opening of the door and window frame 200. In this way, whether in the closed state or the folded state, the first blocking wall 301 and the second blocking wall 401 can block at least part of the structure of the folding door and window connecting device 100, so that the appearance of the folding door and window seat can be more concise and beautiful.

[0045] In this embodiment, in order to satisfy that the first door and window sash connecting member 2 can rotate 180° relative to the door and window frame fixing member 1 and satisfy that the second door and window sash connecting member 3 can rotate 180° relative to the first door and window sash connecting member 2, preferably, the door and window frame fixing member 1, the first door and window sash connecting member 2, the second door and window sash connecting member 3, and the link member 4 form a first parallelogram linkage; based on simplifying the spatial arrangement of the first strengthening member 5 and the second strengthening member 6, further preferably, the door and window frame fixing member 1, the first door and window sash connecting member 2, the first strengthening member 5, and the link member 4 form a second parallelogram linkage, and the first door and window sash connecting member 2, the second door and window sash connecting member 3, the second strengthening member 6, and the first strengthening member 5 form a third parallelogram linkage.

[0046] It should be noted that in other preferred embodiments, according to design requirements, the angle range that the first door and window sash connecting member 2 can rotate relative to the door and window frame fixing member 1 can also be other angles, such as 90°, or, for example, between 90° and 180°. Correspondingly, the four-bar linkage formed by the door and window frame fixing member 1, the first door and window sash connecting member 2, the second door and window sash connecting member 3, and the link member 4 will no longer be a parallelogram linkage, and the four-bar linkage formed by the door and window frame fixing member 1, the first door and window sash connecting member 2, the first strengthening member 5, and the link member 4 can also change correspondingly, and the four-bar linkage formed by the first door and window sash connecting member 2, the second door and window sash connecting member 3, the second strengthening member 6, and the first strengthening member 5 can also change correspondingly.

[0047] In the above solution, when the folding door and window connecting device 100 is installed in the folding door and window seat for use, the gravitational moment of the first door and window sash 300 acts on the first door and window sash connecting member 2, a part of the gravitational moment of the second door and window sash 400 is dispersed and acts on the first door and window sash connecting member 2, and another part of the gravitational moment of the second door and window sash 400 is dispersed and acts on the link member 4. By pivoting the first strengthening member 5 between the link member 4 and the first door and window sash connecting member 2, and by pivoting the second strengthening member 6 between the first strengthening member 5 and the second door and window sash connecting member 3, thus, in addition to making up for the stall torque and acting as a tie rod for correct operation, the second strengthening member 6 can also overcome the influence of the gravitational moments of the two door and window sashes on the first door and window sash connecting member 2 and the link member 4, thereby increasing the strength of the device as a whole, making the movement trajectory of the door and window sashes more stable and reducing the generation of noise.

[0048] It can also be known from the foregoing that the gravitational moment of the first door and window sash 300 and a part of the gravitational moment of the second door and window sash 400 will be superimposed on the first door and window sash connecting member 2. Therefore, the requirement for the support strength on the side of the first door and window sash connecting member 2 is relatively high. In the above solution, by making the second strengthening member 6 biased closer to the first door and window sash connecting member 2, the second strengthening member 6 can better overcome the superposition of the gravitational moments of the two door and window sashes. On the premise of meeting the requirement of increasing the overall strength of the device, the overall structure can be controlled to be relatively simple, thereby saving costs.

[0049] Refer to Figure 8 , in this embodiment, define the distance between the pivot axis of the first door and window sash connecting member 2 and the window frame fixing member 1 and the pivot axis of the first door and window sash connecting member 2 and the second door and window sash connecting member 3 as L1, and define the distance between the pivot axis of the second strengthening member 6 and the first strengthening member 5 and the pivot axis of the second strengthening member 6 and the second door and window sash connecting member 3 as L2. Preferably, L1 and L2 are not equal, that is, the distance between the first axis S1 and the second axis S2 is not equal to the distance between the seventh axis S7 and the eighth axis S8. Thus, under the load of the two door and window sashes, the deformation amplitudes generated by the second strengthening member 6 and the first door and window sash connecting member 2 are different, so that the second strengthening member 6 and the first door and window sash connecting member 2 form two unequal elastic bows that interact with each other, and further make the deformation amplitudes of the second strengthening member 6 and the first door and window sash connecting member 2 small or not easily deformed, with better support strength and a more stable movement trajectory.

[0050] Refer to Figures 7 to 9, based on the foregoing structure, the relationships of the respective nodes constituting the three parallel four-bar linkages are as follows: The plane where the first axis S1 and the fourth axis S4 are located, the plane where the fifth axis S5 and the sixth axis S6 are located, and the plane where the second axis S2 and the third axis S3 are located are always parallel to each other. The plane where the first axis S1 and the second axis S2 are located and the plane where the third axis S3 and the fourth axis S4 are located are always parallel to each other. The plane where the second axis S2 and the fifth axis S5 are located and the plane where the seventh axis S7 and the eighth axis S8 are located are always parallel to each other.

[0051] Refer to Figures 7 to 9 , in this embodiment, the plane where the first axis S1 and the fourth axis S4 are located is defined as the first plane. Since the window and door frame fixing member 1 is fixedly connected to the window and door frame 200, the first plane is stationary. The plane where the first axis S1 and the second axis S2 are located is defined as the second plane, and the second plane will rotate relative to the window and door frame fixing member 1 around the first axis S1. The plane where the seventh axis S7 and the eighth axis S8 are located is defined as the third plane. When the first reinforcing member 5 swings relative to the window and door frame fixing member 1, the third plane will simultaneously rotate relative to the first reinforcing member 5 around the seventh axis S7.

[0052] Preferably, refer to Figure 9 and Figure 9 Taking the direction shown as a reference, when in the folded state, in the direction of rotation of the first window sash connecting member 2 to open (counterclockwise rotation), the angle between the second plane and the first plane is an obtuse angle (the second axis S2 is located at the lower right of the first plane), and the third plane is parallel to the first plane. In this way, when operating from the folded state to the closed state (clockwise rotation), there will be no dead point jamming phenomenon, and the overall movement is relatively smooth.

[0053] Combined with Figure 7 , and since it is a parallel four-bar linkage, when in the closed state, there is also an angle between the second plane and the first plane (the second axis S2 is located at the upper left of the first plane), and the third plane is parallel to the first plane, so that the second reinforcing member 6 can act as a tie rod, and the second reinforcing member 6 can be used to assist in passing through the motion inflection point of the first window sash connecting member 2, thereby realizing the switching from the closed state to the folded state.

[0054] Refer to Figure 5 and Figure 6 and Figure 6Taking the shown direction as a reference, in this embodiment, as a preferred specific arrangement: in the height direction, the window and door frame fixing member 1 is entirely located at the top, the second window and door leaf connecting member 3 is entirely located at the bottom, the first window and door leaf connecting member 2 is above the second window and door leaf connecting member 3, the second strengthening member 6 is above the first window and door leaf connecting member 2, the first strengthening member 5 is above the second strengthening member 6, and the link member 4 is above the second window and door leaf connecting member 3. Specifically, at the positions of the first axis S1, the fifth axis S5, and the seventh axis S7, the first ends of the window and door frame fixing member 1, the first strengthening member 5, the second strengthening member 6, and the first window and door leaf connecting member 2 are stacked in sequence from top to bottom; at the positions of the fourth axis S4 and the sixth axis S6, the second ends of the window and door frame fixing member 1, the second end of the link member 4, and the second end of the first strengthening member 5 are stacked in sequence from top to bottom; at the positions of the second axis S2 and the eighth axis S8, the second ends of the second strengthening member 6, the second end of the first window and door leaf connecting member 2, and the first end of the second window and door leaf connecting member 3 are stacked in sequence from top to bottom; at the position of the third axis S3, the first end of the link member 4 and the second end of the second window and door leaf connecting member 3 are stacked in sequence from top to bottom.

[0055] Wherein, a connecting ear 21 is provided on the first window and door leaf connecting member 2. The connecting ear 21 protrudes towards the window and door frame fixing member 1 and can be used for pivotally connecting the window and door frame fixing member 1. Preferably, the connecting ear 21 is formed by secondary bending of the plate body of the window and door frame fixing member 1. The purpose of protruding the connecting ear 21 towards the window and door frame fixing member 1 is to form a spaced space between the first window and door leaf connecting member 2 and the window and door frame fixing member 1 when in the closed state, so that the first strengthening member 5 and the second strengthening member 6 can be arranged in a relatively folded manner in the spaced space to complete the folding and storage, and also avoid the first strengthening member 5 and the second strengthening member 6 interfering with the first window and door leaf 300.

[0056] Wherein, the second strengthening member 6 includes a first flat section 61, a first inclined section 62, and a second flat section 63 that are connected in sequence. One end of the first flat section 61 away from the first inclined section 62 (i.e., the first end of the second strengthening member 6) is used for pivotally connecting with the first strengthening member 5, and one end of the second flat section 63 away from the first inclined section 62 (i.e., the second end of the second strengthening member 6) is used for pivotally connecting with the second window and door leaf connecting member 3. The function of the first inclined section 62 is to make the first end of the second flat section 63 sink towards the second window and door leaf connecting member 3, so as to facilitate the pivotal connection between the second strengthening member 6 and the second window and door leaf connecting member 3.

[0057] Among them, the connecting rod member 4 includes a third flat section 41, a second inclined section 42, and a fourth flat section 43 that are connected in sequence. One end of the third flat section 41 away from the second inclined section 42 (i.e., the first end of the connecting rod member 4) is used for pivotally connecting with the second door and window sash connecting member 3. One end of the fourth flat section 43 away from the second inclined section 42 (i.e., the second end of the connecting rod member 4) is used for pivotally connecting with the window frame fixing member 1 and the first strengthening member 5. The function of the second inclined section 42 is to cause the second end of the third flat section 41 facing the second door and window sash connecting member 3 to sink, so as to facilitate the pivotal connection between the connecting rod member 4 and the second door and window sash connecting member 3. A notch 44 is provided on the third flat section 41, and the notch 44 is used to avoid the pivotal connection area between the first door and window sash connecting member 2 and the first strengthening member 5 in the folded state.

[0058] Certainly, in other preferred embodiments, the window frame fixing member 1, the first door and window sash connecting member 2, the second door and window sash connecting member 3, the connecting rod member 4, the first strengthening member 5, and the second strengthening member 6 can also adopt other arrangement methods. On the premise that the window frame fixing member 1 is located at the top and one of the first door and window sash connecting member 2 and the second door and window sash connecting member 3 is located at the bottom, the pivotal connection relationship between the various components can be satisfied.

[0059] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A folding door and window connection device, characterized in that: include: A door and window frame fixing member (1), a first door and window sash connecting member (2), a second door and window sash connecting member (3), a connecting rod member (4), a first reinforcing member (5), and a second reinforcing member (6), wherein: The first end of the first door and window sash connecting member (2) is pivotally connected to the first end of the door and window frame fixing member (1), the second end of the first door and window sash connecting member (2) is pivotally connected to the first end of the second door and window sash connecting member (3), the second end of the second door and window sash connecting member (3) is pivotally connected to the first end of the connecting rod member (4), and the second end of the connecting rod member (4) is pivotally connected to the second end of the door and window frame fixing member (1); The first reinforcing member (5) is pivotally connected between the connecting rod member (4) and the first door and window sash connecting member (2), and the second reinforcing member (6) is pivotally connected between the first reinforcing member (5) and the second door and window sash connecting member (3).

2. The folding door and window connection device according to claim 1, characterized in that: The first end of the first reinforcing member (5) is pivotally connected to the first end of the first door and window sash connecting member (2), and the second end of the first reinforcing member (5) is pivotally connected to the second end of the connecting rod member (4); the first end of the second reinforcing member (6) is pivotally connected to the first end of the first reinforcing member (5), and the second end of the second reinforcing member (6) is pivotally connected to the first end of the second door and window sash connecting member (3).

3. The folding door and window connection device according to claim 2, characterized in that: The door and window frame fixing member (1), the first door and window sash connecting member (2), the second door and window sash connecting member (3), and the connecting rod member (4) constitute a first parallel four-bar linkage mechanism; the door and window frame fixing member (1), the first door and window sash connecting member (2), the first reinforcing member (5), and the connecting rod member (4) constitute a second parallel four-bar linkage mechanism; and the first door and window sash connecting member (2), the second door and window sash connecting member (3), the second reinforcing member (6), and the first reinforcing member (5) constitute a third parallel four-bar linkage mechanism.

4. The folding door and window connection device according to claim 2, characterized in that: The distance between the pivot axis between the first door and window sash connecting member (2) and the door and window frame fixing member (1) and the pivot axis between the first door and window sash connecting member (2) and the second door and window sash connecting member (3) is L1, the distance between the pivot axis between the second reinforcing member (6) and the first reinforcing member (5) and the pivot axis between the second reinforcing member (6) and the second door and window sash connecting member (3) is L2, and L1 is not equal to L2.

5. The folding door and window connection device according to claim 3, characterized in that: The invention comprises a closed state and a folded state. When in the closed state, the first door and window sash connecting member (2) and the second door and window sash connecting member (3) are arranged in a relatively unfolded manner, and the first reinforcing member (5) and the second reinforcing member (6) are arranged in a relatively folded manner; when in the folded state, the first door and window sash connecting member (2) and the second door and window sash connecting member (3) are arranged in a relatively folded manner, and the first reinforcing member (5) and the second reinforcing member (6) are arranged in a relatively unfolded manner.

6. The folding door and window connection device according to claim 5, characterized in that: The plane where the pivot axis between the door and window frame fixing member (1) and the first door and window sash connecting member (2) and the pivot axis between the door and window frame fixing member (1) and the connecting rod member (4) lie is a first plane, the plane where the pivot axis between the door and window frame fixing member (1) and the first door and window sash connecting member (2) and the pivot axis between the first door and window sash connecting member (2) and the second door and window sash connecting member (3) lie is a second plane, the plane where the pivot axis between the second reinforcing member (6) and the first reinforcing member (5) and the pivot axis between the second reinforcing member (6) and the second door and window sash connecting member (3) lie is a third plane, and when in a folded state, the angle between the second plane and the first plane in the direction of rotation and opening of the first door and window sash connecting member (2) is an obtuse angle, and the third plane is parallel to the first plane.

7. The folding door and window connection device according to claim 5, characterized in that: The first door and window sash connecting member (2) is provided with a connecting ear (21) for pivotally connecting the door and window frame fixing member (1), and the connecting ear (21) is arranged to protrude toward the door and window frame fixing member (1), so that a spacing space is formed between the first door and window sash connecting member (2) and the door and window frame fixing member (1) when in a closed state, and the first reinforcing member (5) and the second reinforcing member (6) are relatively folded and arranged in the spacing space.

8. The folding door and window connection device according to claim 5, characterized in that: The door and window frame fixing member (1), the first reinforcing member (5), the second reinforcing member (6), and the first door and window sash connecting member (2) are stacked in sequence; the second door and window sash connecting member (3) is located on a side of the first door and window sash connecting member (2) away from the door and window frame fixing member (1); the second reinforcing member (6) comprises a first flat section (61), a first inclined section (62), and a second flat section (63) connected in sequence; an end of the first flat section (61) away from the first inclined section (62) is used for pivoting with the first reinforcing member (5); and an end of the second flat section (63) away from the first inclined section (62) is used for pivoting with the second door and window sash connecting member (3).

9. The folding door and window connection device according to claim 8, characterized in that: The connecting rod member (4) comprises a third flat section (41), a second inclined section (42) and a fourth flat section (43) which are connected in sequence; an end of the third flat section (41) away from the second inclined section (42) is used for pivoting with the second door and window sash connecting member (3); an end of the fourth flat section (43) away from the second inclined section (42) is used for pivoting with the door and window frame fixing member (1) and the first reinforcing member (5); a notch (44) is provided on the third flat section (41); the notch (44) is used for avoiding the pivoting area between the first door and window sash connecting member (2) and the first reinforcing member (5) in a folded state.

10. A folding door and window seat, characterized in that: It comprises a door and window frame (200), a first door and window sash (300), a second door and window sash (400) and a folding door and window connecting device (100) as described in any one of claims 1 to 9, wherein the door and window frame fixing member (1) is fixedly connected to the door and window frame (200), the first door and window sash connecting member (2) is fixedly connected to the first door and window sash (300), and the second door and window sash connecting member (3) is fixedly connected to the second door and window sash (400).

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