CN218522492U - Folding door hinge mechanism and folding door - Google Patents

Abstract

The utility model belongs to the technical field of channel management structures, in particular to a folding door hinge mechanism and a folding door, wherein the hinge mechanism comprises a fixed plate, a deflection mechanism and a third connecting plate, and the fixed plate is arranged on a door frame; the deflection mechanism comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are rotatably connected to two ends of the fixing plate; the third connecting plate is rotatably connected to the free ends of the first connecting plate and the second connecting plate; one group of bodies is fixedly connected to the first connecting plate or the second connecting plate, and the other group of bodies is fixedly connected to the third connecting plate; the third connecting plate is always parallel to the fixed plate. The door body which is telescopically folded based on the parallelogram stretching principle effectively reduces the space occupation ratio of the door body when the door is opened. The plurality of connecting plate structures are used as supporting parts for supporting the door body to move. Effectively reducing the speed increment when the door body is pushed by wind power. The durability and the practicability of the door body are improved, and enterprise development is facilitated.

Description

Folding door hinge mechanism and folding door

Technical Field

The utility model belongs to the technical field of the passageway management structure, especially, relate to a folding door the hinge mechanism and folding door.

Background

Traditional bathroom door includes door frame, the door body and pin joint structure, and the door frame setting is in the wall body, and the door body passes through pin joint structure, for example, the hinge, rotates the border of connecting at the door frame, and door body rotation path is through the hole of inside casing, but this kind of structure has two defects:

firstly, the air moisture content in the bathroom is higher than the indoor air moisture content in conventional room, therefore, the relative temperature in bathroom is lower, in case the window form in bathroom is opened the back, it is outdoor, bathroom and indoor can form great atmospheric pressure difference, can lead to the door frame hole to form with the vent, the air current promotes the unexpected rotation of door body easily and increases gradually at rotatory in-process speed, the edge of final door body (the part that is close to the lock) violently strikes with the border of door frame, the door body edge of setting in the corner position still can violently strike with the wall body simultaneously, damage door frame and door body easily, and, the door body rotates the inner chamber that extremely limits the back most and can form the triangle-shaped structure with the wall body, occupation space.

As shown in fig. 17, the body 110 of the door body with a rotary structure is a fixed structure, and after leaving the door frame 110, the space occupation ratio of the body 110 outside is constant, which causes great movement interference to the user in a narrow installation space of the toilet door, and is not beneficial to improving the user experience.

In summary, in the prior art, the bathroom door body with a rotary structure has the technical problems of being not durable and low in practicability due to the fact that the structure is fixed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a folding door the hinge mechanism and folding door, aim at solving prior art, revolution mechanic's bathroom door body has the structure immobilization, leads to not durable, the technical problem that the practicality is low.

In order to achieve the above object, an embodiment of the present invention provides a hinge mechanism of a folding door, including a fixing plate, a deflection mechanism and a third connecting plate, wherein the fixing plate is disposed on a door frame; the deflection mechanism comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are respectively connected to two ends of the fixing plate in a one-to-one corresponding rotating mode; the third connecting plate is rotatably connected to the free ends of the first connecting plate and the second connecting plate; the number of the bodies is two, one group of the bodies is fixedly connected to the first connecting plate or the second connecting plate, and the other group of the bodies is fixedly connected to the third connecting plate; the third connecting plate is always parallel to the fixing plate.

Optionally, the fixed plate includes first connecting body and first extension body, the quantity of first extension body is two sets of, and is two sets of first extension body sets up the both ends of first connecting body, first connecting body and the inner circle roof fixed connection of door frame, two sets of first extension body respectively one-to-one correspondence rotate the connection first connecting plate with the second connecting plate.

Optionally, the fixed plate further includes a first reinforcing plate, and two ends of the first reinforcing plate are respectively rotatably connected to the first connecting plate and the second connecting plate.

Optionally, a stopper capable of controlling a rotation angle of the first connecting plate is provided at an end of the first reinforcing plate close to the first connecting plate.

Optionally, the third connecting plate includes a third connecting body and a third extending body, the number of the third extending bodies is two, the two third extending bodies are disposed at two ends of the third connecting body, the third connecting body is fixedly connected to the top of the body, and the two third extending bodies are respectively connected to the first connecting plate and the second connecting plate in a one-to-one correspondence manner.

Optionally, the third connecting plate further includes a second reinforcing plate, and two ends of the second reinforcing plate are respectively rotatably connected to the first connecting plate and the second connecting plate.

Optionally, the first connecting plate comprises a deflection connecting plate and a bending plate, the bending plate is formed at the end of the deflection connecting plate, the bending plate is rotatably connected with the fixed plate, and the end of the deflection connecting plate is rotatably connected with the third connecting plate; the bending plate is arranged in a Z-shaped structure in the cross section shape, two ends of the bending plate are located on two groups of planes which are parallel to each other, and an interval is arranged between the fixed plate and the deflection connecting plate.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the folding door hinge mechanism have one of following technological effect at least: the user drives the body connected with the third connecting plate to horizontally move, and the free ends of the first connecting plate and the second connecting plate which rotatably support the two ends of the third connecting plate swing and rotate along with the movement of the third connecting plate. The length extending path of the third connecting plate is always parallel to the length extending path of the fixing plate. Therefore, the body connected with the third connecting plate always keeps a fixed direction and moves in a curve. And the vertical edge of the body of the fixed connecting plate of the first connecting plate is rotatably connected with the vertical edge of the door frame. The free end of the body is rotated along the curve deflection until the length extension paths of the first connecting plate and the third connecting plate are parallel to each other. The two groups of bodies are overlapped to realize door opening. When the door needs to be closed, the body connected with the third connecting plate is driven to reset into the door frame, and then the door can be closed.

Compared with the traditional rotary door body, the rotary door body has the technical problem that a triangular inner cavity is still formed between the rotary limit position and the cavity, so that space is wasted. The folded door body effectively reduces the space occupation ratio of the door body when the door is opened. The plurality of connecting plate structures are used as supporting parts for supporting the door body to move. Effectively reducing the speed increment when the door body is pushed by wind power. Thereby preventing the door body from violently impacting the wall body or the doorframe. The durability and the practicability of the door body are improved, and the development of enterprises is facilitated.

In order to achieve the above object, an embodiment of the present invention provides a folding door, including the above-mentioned folding door hinge mechanism.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the folding door have one of following technological effect at least: compared with the traditional rotary door body, a triangular inner cavity is still formed between the rotated limit position and the cavity, and the technical problem that space is wasted is caused. The folded door body effectively reduces the space occupation ratio of the door body when the door is opened. The plurality of connecting plate structures are used as supporting parts for supporting the door body to move. Effectively reducing the speed increment when the door body is pushed by wind power. Further preventing the door body from generating violent impact with the wall body or the door frame. The durability and the practicability of the door body are improved, and the development of enterprises is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a hinge mechanism of a folding door according to an embodiment of the present invention.

Fig. 2 is a bottom view of the folding door hinge mechanism of fig. 1.

Fig. 3 is an exploded view of the structure of the hinge mechanism of the folding door of fig. 1.

Fig. 4 is a view illustrating a coupling structure between the fixing plate, the first coupling plate and the second coupling plate of fig. 1.

Fig. 5 is a diagram illustrating a connection structure between the third connection plate, the second connection plate, and the second connection plate of fig. 1.

Fig. 6 is a drawing schematic structure diagram of a hinge mechanism of a folding door provided by an embodiment of the present invention.

Fig. 7 is an operation schematic diagram of a folding door hinge mechanism according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of the folding door hinge mechanism according to the embodiment of the present invention when closing the door.

Fig. 9 is a top view of the folding door hinge mechanism of fig. 8.

Fig. 10 is a bottom view of the folding door hinge mechanism of fig. 8.

Fig. 11 is a sectional view taken along line B-B of fig. 10.

Fig. 12 is a schematic structural view of the folding door hinge mechanism provided by the embodiment of the present invention after opening and folding.

Fig. 13 is a bottom view of the folding door hinge mechanism of fig. 12.

Fig. 14 is an enlarged view of C in fig. 13.

Fig. 15 is a sectional view taken along line a-a in fig. 13.

Fig. 16 is a schematic view of a detailed structure of a stopper according to an embodiment of the present invention.

Fig. 17 is a schematic view showing an installation position relationship and an operation of a door frame in the related art.

Fig. 18 is a schematic structural view of the hinge mechanism of the folding door according to the embodiment of the present invention after being installed.

Wherein, in the figures, the respective reference numerals:

100-door body 110-doorframe 120-body

200-fixed plate 300-deflection mechanism 400-third connecting plate

310-first connecting plate 320-second connecting plate 210-first connecting body

220-first extension 221-first pivot hole 230-first reinforcement plate

231-second pivot hole 311-first connection hole 321-second connection hole

410-third connecting body 420-third extending body 421-third pivot hole

411-countersunk screw hole 430-second reinforcing plate 431-fourth pivot hole

313-bending plate 312-deflection connecting plate 500-stop part

510-a fixed seat 520-an adjusting screw 530-avoiding the vacant position.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1 to 18 are exemplary and intended to be illustrative of the embodiments of the present invention, but are not to be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 2, a hinge mechanism for a folding door is provided, which is suitable for a door body 100. The door body 100 in this embodiment is a folding door that can be applied to a toilet, but not limited thereto. The folding door includes a door frame 110 and a body 120. The number of the bodies 120 is two, and the sizes of the two groups of bodies 120 are adaptively adjusted according to the size of the door frame 110. The folding door hinge mechanism includes a fixed plate 200, a swing mechanism 300, and a third connecting plate 400. The fixing plate 200 is disposed on an inner ring top wall of the door frame 110. The yaw mechanism 300 includes a first connecting plate 310 and a second connecting plate 320. The first connection plate 310 and the second connection plate 320 are rotatably connected to both ends of the fixing plate 200 in a one-to-one correspondence, respectively, and the third connection plate 400 is rotatably connected to free ends of the first connection plate 310 and the second connection plate 320. Wherein, a group of bodies 120 is fixedly connected to the first connecting plate 310 or the second connecting plate 320. For example, in the present embodiment, the body 120 is disposed on the first connection plate 310, and another group of the bodies 120 is fixedly connected to the third connection plate 400.

In the present embodiment, the third connecting plate 400 is always parallel to the fixing plate 200. In this embodiment, the first connecting plate 310, the second connecting plate 320, the fixing plate 200 and the third connecting plate 400 are all disposed in a flat plate structure. The first connecting plate 310, the second connecting plate 320, the third connecting plate 400 and the fixing plate 200 all extend in the horizontal direction. The fixing plate 200 and the third connecting plate 400 have lengthwise extending paths parallel to each other, and the body 120 has the same structure as a conventional door panel.

Specifically, the operation principle of the folding door hinge mechanism is as follows:

as shown in fig. 7, 8 and 12, the user drives the body 120 connected to the third link plate 400 to move horizontally, and the free ends of the first link plate 310 and the second link plate 320 rotatably supporting both ends of the third link plate 400 swing and rotate in accordance with the movement of the third link plate 400. Since the length extension path of the third connecting plate 400 is always parallel to the length extension path of the fixing plate 200. Therefore, the body 120 connected to the third connecting plate 400 always maintains a fixed direction to move in a curve. And the vertical edge of the body 120 fixedly connected with the first connection plate 310 is rotatably connected with the vertical edge of the door frame 110. The free end of the body 120 is rotated along the curved runout until the length extension paths of the first and third connection plates 310 and 400 are parallel to each other. The two sets of bodies 120 are overlapped to open the door. When the door needs to be closed, the body 120 connected to the third connecting plate 400 is driven to return to the inside of the door frame 110, and the door can be closed.

As shown in fig. 17, compared with the conventional folding door for a toilet with a rotary structure, the folding door has the technical problems of structural fixation, resulting in weak durability and low practicability. The embodiment of the utility model provides a folding door the hinge mechanism based on parallelogram's tensile principle carries out mobility control to two sets of independent settings's door plant. One set of door panels rotates and the other set of door panels moves curvilinearly in a fixed orientation. In the present embodiment, the door panel and the fixing plate 200 have rectangular cross sections when viewed from the top or bottom. The paths along which the door panel and the fixing plate 200 extend in length are always parallel to each other. The two door panels can be laid in parallel at the inner ring of the door frame 110 to realize the door closing state, and can also be folded at the outer side of the door frame 110 to realize the door opening state.

As shown in fig. 18, after the two door panels are folded, the two door panels are horizontally arranged with the wall body on which the door frame 110 is installed. Compared with the traditional rotary folding door, the rotary folding door has the technical problem that a triangular inner cavity is still formed between the rotary limit position and the cavity, so that space is wasted. The folded folding door effectively reduces the space occupation ratio of the folding door when the door is opened. The plurality of connecting plate structures are used as supporting parts for supporting the folding door to move. Effectively reducing the speed increment when the folding door is pushed by wind power. Thereby preventing the folding door from violently colliding with the wall or the doorframe 110. The durability and the practicability of the folding door are improved, and the development of enterprises is facilitated.

As shown in fig. 3, in another embodiment of the present invention, the fixing plate 200 includes two sets of first connecting bodies 210 and first extending bodies 220, the two sets of first extending bodies 220 are disposed at two ends of the first connecting bodies 210, the first connecting bodies 210 are fixedly connected to the inner ring top wall of the door frame 110, and the two sets of first extending bodies 220 are respectively connected to the first connecting plate 310 and the second connecting plate 320 in a one-to-one correspondence manner. Specifically, the first connecting body 210 and the first extending body 220 are both arranged in a flat plate structure, the first connecting body 210 and the first extending body 220 are integrally formed by casting steel through a casting machine, a sunk screw hole 411 is formed in the first connecting body 210, the first connecting body 210 is in threaded connection with the top wall of the door frame 110, the first extending body 220 is located at two ends of the long edge of the first connecting body 210, and a first pivot hole 221 for rotatably connecting the first connecting plate 310 and the second connecting plate 320 is formed in the first extending body 220.

As shown in fig. 3, in another embodiment of the present invention, the fixing plate 200 further includes a first reinforcing plate 230, and two ends of the first reinforcing plate 230 are rotatably connected to the first connecting plate 310 and the second connecting plate 320, respectively.

As shown in fig. 4, specifically, the two ends of the first reinforcing plate 230 are provided with second pivot holes 231, the end of the first connecting plate 310 is provided with two sets of first connecting holes 311, the first reinforcing plate 230 is rotatably connected to the first connecting plate 310 through the first pivot holes 221 and the first connecting holes 311, the end of the second connecting plate 320 is provided with two sets of second connecting holes 321, the first reinforcing plate 230 is rotatably connected to the second connecting plate 320 through the first connecting holes 311 and the first pivot holes 221, a straight line L1 where centers of the two sets of first connecting holes 311 are located and a straight line L2 where centers of the two sets of second connecting holes 321 are located are always parallel, and a straight line L3 where centers of the two sets of first pivot holes 221 are located and a straight line L4 where centers of the two sets of second pivot holes 231 are located are always parallel.

The plane of the connection line between the two groups of first connection holes 311 and the two groups of second connection holes 321 is disposed in a parallelogram structure, and correspondingly, the first reinforcing plate 230, the first extending body 220, the first connection plate 310 and the second connection plate 320 are disposed in a parallelogram structure along the extending direction of the connection line, so as to further improve the stability of the hinge mechanism.

As shown in fig. 5, in another embodiment of the present invention, the third connecting plate 400 includes a third connecting body 410 and a third extending body 420, the number of the third extending bodies 420 is two, the two sets of third extending bodies 420 are disposed at two ends of the third connecting body 410, the third connecting body 410 is fixedly connected to the inner ring top wall of the door frame 110, and the two sets of third extending bodies 420 are respectively connected to the first connecting plate 310 and the second connecting plate 320 in a one-to-one correspondence manner. Specifically, the third connecting body 410 and the third extending body 420 are both arranged in a flat plate structure, the third connecting body 410 and the third extending body 420 are integrally formed by casting steel through a casting machine, a sunk screw hole 411 is formed in the third connecting body 410, the third connecting body 410 is in threaded connection with the top wall of the body 120 of the folding door, the third extending body 420 is located at two ends of the long edge of the third connecting body 410, and a third pivot hole 421 for rotatably connecting the first connecting plate 310 and the second connecting plate 320 is formed in the third extending body 420.

As shown in fig. 5, in another embodiment of the present invention, the third connecting plate 400 further includes a second reinforcing plate 430, and both ends of the second reinforcing plate 430 are rotatably connected to the first connecting plate 310 and the second connecting plate 320, respectively.

As shown in fig. 5, specifically, both ends of the second reinforcing plate 430 are provided with fourth pivot holes 431, the end of the first connecting plate 310 far from the first reinforcing plate 230 is also provided with two sets of first connecting holes 311, the second reinforcing plate 430 is rotatably connected to the first connecting plate 310 through the third pivot holes 421 and the first connecting holes 311, the end of the second connecting plate 320 far from the first reinforcing plate 230 is also provided with two sets of second connecting holes 321, the second reinforcing plate 430 is rotatably connected to the second connecting plate 320 through the first connecting holes 311 and the third pivot holes 421, a straight line L5 where centers of the two sets of first connecting holes 311 are located and a straight line L6 where centers of the two sets of second connecting holes 321 are located are always parallel, and a straight line L7 where centers of the two sets of third pivot holes 421 are located and a straight line L8 where centers of the two sets of fourth pivot holes 431 are always parallel.

As shown in fig. 5, the plane connecting the connecting lines between the two sets of first connecting holes 311 and the two sets of second connecting holes 321 is disposed in a parallelogram structure, and correspondingly, the second reinforcing plate 430, the third extending body 420, the first connecting plate 310 and the second connecting plate 320 are disposed in a parallelogram structure after being distributed along the length direction of the connecting lines, so as to further improve the stability of the hinge mechanism.

With reference to the above embodiment, as shown in fig. 6, the whole body formed by the fixing plate 200, the first connecting plate 310, the second connecting plate 320, and the third connecting plate 400 is subjected to tensile deformation based on a parallelogram structure, and meanwhile, the whole body formed by three groups of components connected in sequence at will is still subjected to tensile deformation based on a parallelogram structure, so that the stability of the hinge mechanism is greatly improved.

As shown in fig. 16, in another embodiment of the present invention, the first connecting plate 310 includes a deflection connecting plate 312 and a bending plate 313, the bending plate 313 is formed at an end of the deflection connecting plate 312, the bending plate 313 is rotatably connected to the fixing plate 200, and an end of the deflection connecting plate 312 is rotatably connected to the third connecting plate 400; the cross-sectional shape of the bending plate 313 is a Z-shaped structure, two ends of the bending plate 313 are located on two groups of planes parallel to each other, an interval S1 is arranged between the fixing plate 200 and the deflection connecting plate 312, and the first connecting hole 311 is arranged on the bending plate 313.

Specifically, the swing connecting plate 312 is fixedly connected to the body 120 of the folding door, the bottom of the bending plate 313 is connected to the upper end face of the fixing plate 200, and from a side view, the swing connecting plate 312, the third connecting plate 400, the second reinforcing plate 430, the second connecting plate 320 and the fixing plate 200 are sequentially connected in an overlapping manner from bottom to top, the third connecting plate 400 and the first reinforcing plate 230 are located in the same plane, and through the bending plate 313 arranged in a Z shape, an interval S1 for accommodating other components can be formed between the first connecting plate 310 and the fixing plate 200, as shown in fig. 8 to 11, the overall overlooking cross section of the hinge structure in a closed door state is arranged in a rectangular structure, so that the space occupation ratio of the hinge is effectively reduced, the secrecy of the hinge is improved, and the installation flexibility of the folding door adopting the hinge mechanism is improved.

As shown in fig. 13 to 16, in another embodiment of the present invention, the end of the first reinforcing plate 230 is provided with a stop member 500, the stop member 500 includes a fixing seat 510 and an adjusting screw 520, the fixing seat 510 is disposed at the end of the first reinforcing plate 230 close to the bending plate 313, wherein the end of the first reinforcing plate 230 is provided with a clearance 530 for avoiding the clearance of the bending plate 313, the fixing seat 510 is in threaded connection with the adjusting screw 520, and the nut end of the adjusting screw 520 is located in the clearance 530, specifically, when the bending plate 313 moves to a preset position along with the body 120 of the folding door, the nut end of the adjusting screw 520 abuts against the fixing seat, so as to prevent the bending plate 313 from continuing to rotate, and further realize the limiting effect of the rotation angle of the first connecting plate 310.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a folding door hinge mechanism, is applicable to a body, a body includes door frame and body, its characterized in that, this folding door hinge includes:

the fixing plate is arranged on the door frame;

the deflection mechanism comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are respectively connected to two ends of the fixing plate in a one-to-one corresponding rotating mode;

the third connecting plate is rotatably connected to the free ends of the first connecting plate and the second connecting plate;

the number of the bodies is two, one group of the bodies is fixedly connected to the first connecting plate or the second connecting plate, and the other group of the bodies is fixedly connected to the third connecting plate; the third connecting plate is always parallel to the fixing plate.

2. A folding door hinge mechanism according to claim 1, characterized in that: the fixed plate comprises a first connecting body and a first extending body, the number of the first extending body is two, and the first extending body is arranged at two ends of the first connecting body, the first connecting body is fixedly connected with the inner ring top wall of the door frame, and the first extending body is connected with the first connecting plate and the second connecting plate in a one-to-one correspondence mode.

3. A folding door hinge mechanism according to claim 2, characterized in that: the fixed plate further comprises a first reinforcing plate, and two ends of the first reinforcing plate are respectively connected with the first connecting plate and the second connecting plate in a rotating mode.

4. A folding door hinge mechanism according to claim 3, characterized in that: the end part of the first reinforcing plate close to the first connecting plate is provided with a stop piece capable of controlling the rotation angle of the first connecting plate.

5. A folding door hinge mechanism according to claim 1, characterized in that: the third connecting plate comprises a third connecting body and third extending bodies, the number of the third extending bodies is two, the third extending bodies are arranged at two ends of the third connecting body, the third connecting body is fixedly connected with the top of the body, and the third extending bodies are respectively connected with the first connecting plate and the second connecting plate in a one-to-one corresponding mode.

6. A folding door hinge mechanism according to claim 5, characterized in that: the third connecting plate further comprises a second reinforcing plate, and two ends of the second reinforcing plate are respectively connected with the first connecting plate and the second connecting plate in a rotating mode.

7. A folding door hinge mechanism according to claim 6, characterized in that: the first connecting plate comprises a deflection connecting plate and a bent plate, the bent plate is formed at the end part of the deflection connecting plate, the bent plate is rotatably connected with the fixed plate, and the end part of the deflection connecting plate is rotatably connected with the third connecting plate;

the cross-sectional shape of the bending plate is arranged in a Z-shaped structure, two ends of the bending plate are located on two groups of planes which are parallel to each other, and a space is arranged between the fixed plate and the deflection connecting plate.

8. The utility model provides a folding door, includes door frame and the door body, its characterized in that: the folding door further comprises a folding door hinge mechanism according to any one of claims 1 to 7.

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