Folding door and fence system configured with a rotation limiting mechanism

Abstract

The utility model discloses a folding door with rotation limiting mechanism, first movable door and second movable door are hinged to each other to form first rotation axis, and the second movable door is hinged on the second fixed stand to form second rotation axis, rotation limiting mechanism includes first fixed seat, second fixed seat, limiting connecting rod, limiting connecting rod and first fixed seat hinge to form third rotation axis, and second fixed seat hinge to form fourth rotation axis, form parallelogram in the order of first rotation axis, second rotation axis, fourth rotation axis, third rotation axis, second movable door rotates in first direction, and first movable door rotates in reverse direction and faces to maintain constant, the first extension of first fixed seat and the second extension of second fixed seat extend to the same side of second movable door, its advantage lies in, reduce the maximum opening width of folding door, apply to cramped narrow space, expand the applicable environment of fence system.

Description

Technical Field

[0001] This utility model relates to a folding door used in the access passage of a safety fence, and more particularly to a folding door equipped with a rotation limiting mechanism, and a fence system with the folding door installed. The rotation limiting mechanism restricts the movement trajectory of the folding door during the opening and closing process within a certain space, so as to be used in confined and narrow space environments. Background Technology

[0002] Safety fencing systems are important facilities used to protect the safety of industrial areas, playing a vital role in environments such as factories, workshops, and warehouses.

[0003] Folding gates are typically installed at the entrances and exits of fencing systems. Existing folding gates generally employ the following structure: The folding gate is positioned in the entrance / exit passage between a first fixed post and a second fixed post, comprising a first movable door and a second movable door hinged together, with the second side of the second movable door hinged to the second fixed post. When the entrance / exit passage needs to be opened, the first and second movable doors are rotated and pushed together towards the second fixed post.

[0004] For example, the utility model patent with authorization announcement number CN221169258U discloses a flip-up folding door, including a door frame and a door leaf assembly. The door leaf assembly is disposed on the door frame and includes a first door body and a second door body. The first door body and the door frame are hinged together, and the first door body and the second door body are hinged together on one side. The door frame includes a first door post and a second door post, and the first door body and the first door post are hinged together. When the flip-up folding door is arranged on a safety fence, the posts of the safety fence on both sides of the passage can be used as the first door post and the second door post, thereby realizing the control of passage passage.

[0005] As can be seen, when this type of folding door opens and closes, it has two axes of rotation. The first axis of rotation is the hinge axis between the first and second movable doors, and the second axis of rotation is the hinge axis between the second movable door and the second fixed post. Therefore, the movement path of the folding door during the folding process is unpredictable, causing the folding door to expand to the entire width of the folding door, i.e., the sum of the widths of the two movable doors, when its movement radius is at its maximum. This mode of operation makes folding doors unsuitable for use in confined or narrow environments. Utility Model Content

[0006] Given that the movement path of traditional folding doors changes unpredictably during the folding process, resulting in an excessively large movement radius, making them unsuitable for use in confined or narrow environments, the technical problem to be solved by this invention is to provide a folding door equipped with a rotation limiting mechanism. This rotation limiting mechanism restricts the movement logic relationship between the first and second movable doors, thereby limiting the overall movement trajectory of the folding door during opening and closing to a certain range, thus enabling its application in confined and narrow spaces.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a folding door equipped with a rotation limiting mechanism, which is used to be installed between the entrance and exit passage formed by the first fixed column and the second fixed column;

[0008] It includes a first movable door and a second movable door; the first movable door and the second movable door are hinged to each other to form a first rotation axis; the second movable door is hinged to a second fixed column to form a second rotation axis; the first movable door can rotate around the first rotation axis, and the second movable door can rotate around the second rotation axis.

[0009] It also includes a rotation limiting mechanism;

[0010] The rotation limiting mechanism includes a first fixed seat at one end, a second fixed seat at the other end, and a limiting link connecting the first fixed seat and the second fixed seat; the first fixed seat is fixedly connected to the first movable door, and the second fixed seat is used to fixally connect to the second fixed column; one end of the limiting link is hinged to the first fixed seat to form a third rotation axis, and the other end of the limiting link is hinged to the second fixed seat to form a fourth rotation axis;

[0011] A parallelogram is formed in the order of the first rotation axis, the second rotation axis, the fourth rotation axis, and the third rotation axis; when the second movable door rotates about the second rotation axis in a first direction, the first movable door rotates about the first rotation axis in the opposite direction of the first direction, and the facing of the first movable door remains constant;

[0012] The first fixed base includes a first mounting part and a first extension part. The first mounting part is fixedly connected to the first movable door. One end of the limiting link is hinged to the first extension part to form a third rotation axis.

[0013] The second fixed base includes a second mounting part and a second extension part. The second mounting part is used to fix the second fixed column. The other end of the limiting link is hinged to the second extension part to form a fourth rotation axis.

[0014] The first extension and the second extension extend toward the same side of the second movable door.

[0015] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: the second side of the first movable door and the first side of the second movable door are hinged to each other by a plurality of hinge assemblies, so that the rotation range of the first movable door is limited to the first side of the folding door equipped with the rotation limiting mechanism.

[0016] The second side of the second movable door is hinged to the hinged retaining ring on the second fixed column, so that the rotation range of the second movable door is limited to the opposite side of the first side of the folding door equipped with the rotation limiting mechanism.

[0017] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the first mounting part of the first fixed seat is inverted U-shape, fixedly mounted on the top of the first movable door, and fastened to the top of the first movable door with bolts; the first extension part extends outward from the end of the first mounting part along the straight line where the top of the first movable door is located.

[0018] The second mounting portion of the second fixing seat is U-shaped and is used to be fixed to the side of the second fixing column and fastened to the side of the second fixing column with bolts; the second extension portion extends outward from the end of the second mounting portion and is inclined away from the second movable door.

[0019] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the limiting link includes a first fisheye joint, a second fisheye joint, and a link body;

[0020] The rotating end of the first fisheye connector is hinged to the first fixed base to form a third rotation axis, and the rotating end of the second fisheye connector is hinged to the second fixed base to form a fourth rotation axis.

[0021] One end of the connecting rod body is threadedly fastened to the connecting end of the first fisheye connector, and the other end is threadedly fastened to the connecting end of the second fisheye connector.

[0022] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: it includes two sets of the rotation limiting mechanisms, and the two sets of rotation limiting mechanisms are symmetrically arranged on the upper and lower sides of the folding door equipped with the rotation limiting mechanisms.

[0023] Another technical solution adopted by this utility model to solve the above-mentioned technical problems is: a fence system, including a fence, a first fixed post and a second fixed post; an access passage is formed between the first fixed post and the second fixed post;

[0024] It also includes folding doors equipped with rotation limiting mechanisms;

[0025] The folding door equipped with a rotation limiting mechanism is installed between the entrance and exit channels, the second movable door is hinged to the second fixed column, and the second fixed seat is fixedly connected to the second fixed column;

[0026] When the folding door equipped with the rotation limiting mechanism is in the closed state, the first movable door and the second movable door are on the same plane; during the movement of the folding door equipped with the rotation limiting mechanism, the rotation limiting mechanism keeps the facing of the first movable door parallel to the closed state.

[0027] Another preferred technical solution adopted by this utility model to solve the above-mentioned technical problem is: the second fixed column is provided with a plurality of hinged fixing rings;

[0028] The hinge fixing ring includes a ring sleeve and a hinge part, the hinge part being disposed on the side of the ring sleeve; the ring sleeve is sleeved and fixed on the second fixed column, and the second side of the second movable door is hinged to the hinge part.

[0029] Another preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is that the folding door equipped with the rotation limiting mechanism is configured to open to the outside of the fence;

[0030] The hinge portion is located near the outside of the folding door equipped with the rotation limiting mechanism, so that the rotation range of the second movable door is limited to the outside of the folding door equipped with the rotation limiting mechanism.

[0031] The second side of the first movable door and the first side of the second movable door are hinged to each other by a plurality of hinge assemblies; the opening of the hinge assembly faces the outside of the folding door equipped with the rotation limiting mechanism, so that the rotation range of the first movable door is limited to the inside of the folding door equipped with the rotation limiting mechanism.

[0032] Another preferred technical solution adopted by this utility model to solve the above-mentioned technical problem is: a locking mechanism is provided between the first side of the first movable door and the first fixed column, and when the folding door equipped with the rotation restriction mechanism is in the closed state, the locking mechanism can lock the folding door equipped with the rotation restriction mechanism.

[0033] Another preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the second fixing seat includes a second mounting part and a second extension part; the second mounting part is laterally U-shaped and is fixedly fastened to the side of the second fixing column; the second extension part extends outwardly from the end of the second mounting part. Compared with the prior art, the advantages of this utility model are: by setting a rotation limiting mechanism, a third rotation axis and a fourth rotation axis are added to the original first and second rotation axes of the first and second movable doors, so that the four rotation axes form a parallelogram. Utilizing the principle of the parallelogram, a certain restricted motion logic relationship is formed between the first and second movable doors. That is, during the opening and closing of the folding door, the orientation of the first movable door remains constant, thereby reducing the maximum opening width of the folding door from the sum of the widths of the two movable doors in the prior art to the width of the second movable door. This enables the folding door to be used in cramped, narrow, and limited spaces, further expanding the applicability of the fence system. Attached Figure Description

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0035] Figure 1 A schematic diagram of a fence system with a rotation limiting mechanism in the closed state for a folding gate;

[0036] Figure 2 A schematic diagram of a fence system with a rotation limiting mechanism in the half-open state for a folding gate;

[0037] Figure 3 A schematic diagram of a fence system with a folding gate equipped with a rotation limiting mechanism in the fully open state;

[0038] Figure 4 A schematic diagram of a folding door equipped with a rotation limiting mechanism in the half-open state;

[0039] Figure 5 for Figure 4 A magnified view of a portion at point A;

[0040] Figure 6 for Figure 4 A magnified view of the area at point B;

[0041] Figure 7An exploded view of a folding door equipped with a rotation limiting mechanism;

[0042] Figure 8 for Figure 7 A magnified view of the area at point D;

[0043] Figure 9 for Figure 7 A magnified view of the area at point E;

[0044] Figure 10 A partial structural diagram of a folding door equipped with a rotation limiting mechanism at the first fixed seat;

[0045] Figure 11 for Figure 7 A magnified view of the area at point F;

[0046] Figure 12 A top view of a folding door equipped with a rotation limiting mechanism in the closed state;

[0047] Figure 13 A top view of a folding door equipped with a rotation limiting mechanism in a half-open state;

[0048] Figure 14 A top view of a folding door equipped with a rotation limiting mechanism in its fully open position;

[0049] Figure 15 A schematic diagram of a folding door equipped with a rotation limiting mechanism in the fully open state;

[0050] Explanation of reference numerals in the attached figures:

[0051] Fence system 200, first fixed post 201, second fixed post 202, fence 203, access passage 204, folding door 100 equipped with a rotation limiting mechanism, first movable door 101, first side 101a of the first movable door, second side 101b of the first movable door, second movable door 102, first side 102a of the second movable door, second side 102b of the second movable door, rotation limiting mechanism 103, first fixed base 10, first mounting part 11, first extension part 12, first hinge hole 12k, second fixed base 20, second mounting part 21, second extension part 22, second hinge hole 22k, limiting The components include: a connecting rod 30, a first fisheye connector 31, a rotating end 31a of the first fisheye connector, a connecting end 31b of the first fisheye connector, a first fisheye hole 31k, a second fisheye connector 32, a rotating end 32a of the second fisheye connector, a connecting end 32b of the second fisheye connector, a second fisheye hole 32k, a connecting rod body 33, a pin-locking structure 34, a pin shaft 34a, a washer 34b, a locking pin 34c, a pin cap x1, a pin hole x2, a first rotating shaft z1, a second rotating shaft z2, a third rotating shaft z3, a fourth rotating shaft z4, a hinge assembly 40, an opening 41, a hinge fixing ring 50, a ring sleeve part 51, a hinge part 52, and a locking mechanism 60. Detailed Implementation

[0052] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0054] like Figures 1 to 3 The fence system 200 provided in this embodiment includes a fence 203, a first fixed post 201, and a second fixed post 202. An access passage 204 is formed between the first fixed post 201 and the second fixed post 202. It also includes a folding door 100 equipped with a rotation limiting mechanism, which is installed between the access passage 204, i.e., between the first fixed post 201 and the second fixed post 202.

[0055] like Figure 4 Combination Figure 13 As shown, the folding door 100 equipped with a rotation limiting mechanism includes a first movable door 101 and a second movable door 102. The first movable door 101 and the second movable door 102 are hinged to each other to form a first rotation axis z1, and the second movable door 102 is hinged to a second fixed column 202 to form a second rotation axis z2. The first movable door 101 can rotate about the first rotation axis z1, and the second movable door 102 can rotate about the second rotation axis z2.

[0056] like Figures 4 to 6 Combination Figure 13 As shown, the folding door 100 equipped with a rotation limiting mechanism further includes a rotation limiting mechanism 103. The rotation limiting mechanism 103 includes a first fixed base 10 at one end, a second fixed base 20 at the other end, and a limiting link 30 connecting the first fixed base 10 and the second fixed base 20. The first fixed base 10 is fixedly connected to the first movable door 101, and the second fixed base 20 is fixedly connected to the second fixed column 202. One end of the limiting link 30 is hinged to the first fixed base 10 to form a third rotation axis z3, and the other end of the limiting link 30 is hinged to the second fixed base 20 to form a fourth rotation axis z4.

[0057] like Figures 12 to 14 As shown, the first rotation axis z1, the second rotation axis z2, the fourth rotation axis z4, and the third rotation axis z3 form a parallelogram. Those skilled in the art should understand that the first rotation axis z1, the second rotation axis z2, the third rotation axis z3, and the fourth rotation axis z4 are all straight lines in the vertical direction, forming the four edges of a quadrangular prism in three-dimensional space. The horizontal cross-section of this quadrangular prism is the parallelogram described above.

[0058] like Figure 1 and Figure 12 As shown, in this embodiment, when the folding door 100 equipped with the rotation limiting mechanism is in the closed state, the first movable door 101 and the second movable door 102 are on the same plane to close the access passage 204 between the first fixed column 201 and the second fixed column 202.

[0059] like Figures 12 to 14 As shown, during the opening and closing movements of the folding door 100 equipped with a rotation limiting mechanism, the second movable door 102 rotates around the second rotation axis z2 in the first direction, and the first movable door 101 rotates around the first rotation axis z1 in the opposite direction of the first direction, and the facing of the first movable door 101 remains constant.

[0060] That is, when the second movable door 102 rotates clockwise around the second rotation axis z2, the first movable door 101 rotates counterclockwise around the first rotation axis z1; when the second movable door 102 rotates counterclockwise around the second rotation axis z2, the first movable door 101 rotates clockwise around the first rotation axis z1. The rotation limiting mechanism 103 keeps the orientation of the first movable door 101 constant, that is, parallel to the closed state.

[0061] Therefore, the folding door and fence system with rotation limiting mechanism provided by this utility model, by setting rotation limiting mechanism 103, adds a third rotation axis z3 and a fourth rotation axis z4 to the original first rotation axis z1 and second rotation axis z2 of the first movable door 101 and the second movable door 102, so that the four rotation axes form a parallelogram. Utilizing the principle of parallelogram, a certain restricted motion logic relationship is formed between the first movable door 101 and the second movable door 102. That is, during the opening and closing of the folding door, the orientation of the first movable door 101 remains constant, thereby reducing the maximum opening width of the folding door from the sum of the widths of the two movable doors in the prior art to the width of the second movable door 102. This enables the folding door to be used in cramped, narrow, and limited spaces, further expanding the applicability of the fence system.

[0062] It should be noted that in other embodiments, when the folding door 100 equipped with the rotation limiting mechanism is in the closed state, the first movable door 101 and the second movable door 102 are not necessarily on the same plane, and may also have a certain angle, depending on the overall shape design of the fence system 200. The rotation limiting mechanism 103 uses the parallelogram principle to keep the orientation of the first movable door 101 constant. Regardless of the orientation of the first movable door 101 in the closed state, its orientation remains constant in all instantaneous states of movement, including the closed state.

[0063] like Figures 4 to 7 As shown, the second side 101b of the first movable door and the first side 102a of the second movable door are hinged together by a plurality of hinge assemblies 40. In this embodiment, four hinge assemblies 40 are used so that the rotation range of the first movable door 101 is limited to the first side of the folding door 100 equipped with the rotation limiting mechanism. The second side 102b of the second movable door is hinged to the hinge fixing ring 50 on the second fixed column 202 so that the rotation range of the second movable door 102 is limited to the opposite side of the first side of the folding door 100 equipped with the rotation limiting mechanism.

[0064] Specifically, such as Figure 7 and Figure 11As shown, the second fixed column 202 is provided with several hinged fixing rings 50. In this embodiment, four hinged fixing rings 50 are used. Each hinged fixing ring 50 includes a ring sleeve portion 51 and a hinge portion 52, with the hinge portion 52 located on the side of the ring sleeve portion 51. The ring sleeve portion 51 is sleeved and fixed on the second fixed column 202, and the second side portion 102b of the second movable door is hinged to the hinge portion 52.

[0065] In this embodiment, the folding door 100 equipped with a rotation limiting mechanism is configured to open outwards from the fence 203. Therefore, the hinge portion 52 is provided near the outside of the folding door 100 equipped with the rotation limiting mechanism, so that the rotation range of the second movable door 102 is limited to the outside of the folding door 100 equipped with the rotation limiting mechanism, that is, the side opposite to the aforementioned first side is the outside of the folding door 100 equipped with the rotation limiting mechanism.

[0066] Correspondingly, such as Figure 4 and Figure 5 As shown, the opening 41 of the hinge assembly 40 faces the outside of the folding door 100 equipped with the rotation limiting mechanism, so that the rotation range of the first movable door 101 is limited to the inside of the folding door 100 equipped with the rotation limiting mechanism, that is, the aforementioned first side is the inside of the folding door 100 equipped with the rotation limiting mechanism.

[0067] It should be further explained that, since the folding door 100 equipped with the rotation restriction mechanism is foldable, it is somewhat difficult to describe its orientation in words. Here, the "inner side" and "outer side" of the folding door 100 equipped with the rotation restriction mechanism refer to the side of the folding door 100 facing the "inner side" of the fence 203 when it is closed, which is the "inner side" of the folding door 100 equipped with the rotation restriction mechanism, i.e., the first side. The side of the folding door 100 facing the "outer side" of the fence 203 is the "outer side" of the folding door 100 equipped with the rotation restriction mechanism, i.e., the opposite side of the first side.

[0068] Therefore, as Figures 12 to 15 As shown, in this embodiment, the rotation range of the first movable door 101 is limited to the inner side of the folding door 100 equipped with the rotation limiting mechanism. When closed, it is 180° relative to the inner side of the second movable door 102, and when fully open, it is 0° relative to the inner side of the second movable door 102. The rotation range of the second movable door 102 is limited to the outer side of the folding door 100 equipped with the rotation limiting mechanism, rotating 180° outward from 0° when closed to 180° when fully open.

[0069] In other embodiments, the folding door 100 equipped with a rotation limiting mechanism can also be configured to open inwards towards the fence 203. In this case, the side opposite to the aforementioned first side is the inner side of the folding door 100 equipped with the rotation limiting mechanism, and the first side is the outer side of the folding door 100 equipped with the rotation limiting mechanism, the correspondence being the opposite of this embodiment. In this embodiment, the folding door 100 equipped with the rotation limiting mechanism opens outwards towards the fence 203, which can prevent the folding door from colliding with the equipment inside the fence 203 when it is opened. Not only can the internal space of the fence 203 be fully utilized and the opening and closing of the folding door will not obstruct each other, but it can also ensure the safety of the equipment, avoid collision damage, and prevent electrical safety accidents caused by live equipment touching the folding door.

[0070] like Figure 8 and Figure 9 As shown, the first fixed base 10 includes a first mounting portion 11 and a first extension portion 12. The first mounting portion 11 is fixedly connected to the first movable door 101, and one end of the limiting link 30 is hinged to the first extension portion 12 to form a third rotation axis z3. The second fixed base 20 includes a second mounting portion 21 and a second extension portion 22. The second mounting portion 21 is fixedly connected to the second fixed column 202, and the other end of the limiting link 30 is hinged to the second extension portion 22 to form a fourth rotation axis z4.

[0071] The first extension 12 and the second extension 22 extend toward the same side of the second movable door 102, thereby forming a parallelogram in the order of the first rotation axis z1, the second rotation axis z2, the fourth rotation axis z4, and the third rotation axis z3, and restricting the connecting rod 30 to be located on one side of the second movable door 102, so that it does not need to pass through the second movable door 102. In this embodiment, the first extension 12 and the second extension 22 extend toward the outside of the second movable door 102, thus restricting the connecting rod 30 to be located on the outside of the second movable door 102, so as to avoid obstructing or colliding with the equipment inside the fence 203.

[0072] like Figure 8 As shown, the first mounting portion 11 of the first fixing seat 10 is inverted U-shape, so it can be fixed to the top of the first movable door 101 and fastened to the top of the first movable door 101 with bolts. The first extension portion 12 extends outward from the end of the first mounting portion 11 along the straight line where the top of the first movable door 101 is located.

[0073] like Figure 9 As shown, the second mounting portion 21 of the second fixing seat 20 is U-shaped in a sideways direction, so it can be locked and fixed to the side of the second fixing column 202 and fastened to the side of the second fixing column 202 with bolts. The second extension portion 22 extends outward from the end of the second mounting portion 21 and is inclined in a direction away from the second movable door 102.

[0074] The shapes and extension directions of the first extension 12 and the second extension 22 are such that the third rotation axis z3 and the fourth rotation axis z4 form a parallelogram with the other two rotation axes and match the direction of movement when the folding door is opened.

[0075] like Figure 5 and Figure 6 As shown, the limiting link 30 includes a first fisheye connector 31, a second fisheye connector 32, and a link body 33. The rotating end 31a of the first fisheye connector is hinged to the first extension 12 of the first fixed base 10 to form a third rotation axis z3, and the rotating end 32a of the second fisheye connector is hinged to the second extension 22 of the second fixed base 20 to form a fourth rotation axis z4. One end of the link body 33 is threadedly fastened to the connecting end 31b of the first fisheye connector, and the other end is threadedly fastened to the connecting end 32b of the second fisheye connector.

[0076] Furthermore, such as Figures 8 to 10 As shown, the first fisheye connector 31 and the second fisheye connector 32 are both hinged to the first fixed seat 10 and the second fixed seat 20 by a pin-locking structure 34. The pin-locking structure includes a pin 34a, a washer 34b and a locking pin 34c. The top end of the pin 34a is provided with a pin cap x1, and the end of the pin 34a is provided with a pin hole x2.

[0077] The rotating end 31a of the first fisheye connector has a first fisheye hole 31k, and the first extension 12 of the first fixed base 10 has a first hinge hole 12k. A washer 34b is placed between the rotating end 31a of the first fisheye connector and the first extension 12 of the first fixed base 10. A pin 34a passes through the first fisheye hole 31k, the washer 34b and the first hinge hole 12k in sequence. A pin cap x1 abuts against the upper surface of the rotating end 31a of the first fisheye connector, and a retaining pin 34c passes through a pin hole x2, thereby hinged the rotating end 31a of the first fisheye connector to the first extension 12 of the first fixed base 10.

[0078] Similarly, the rotating end 32a of the second fisheye connector has a second fisheye hole 32k, and the second extension 22 of the second fixed base 20 has a second hinge hole 22k. The washer 34b is placed between the rotating end 32a of the second fisheye connector and the second extension 22 of the second fixed base 20. The pin 34a passes through the second fisheye hole 32k, the washer 34b and the second hinge hole 22k in sequence. The pin cap x1 abuts against the upper surface of the rotating end 32a of the second fisheye connector, and the retaining pin 34c passes through the pin hole x2, thereby hinged the rotating end 32a of the second fisheye connector to the second extension 22 of the second fixed base 20.

[0079] The hinged fixing method using this pin-and-clip structure 34 is easy to assemble and flexible to disassemble, and is especially suitable for the use of fence systems 200 that require flexible disassembly, assembly and splicing.

[0080] like Figures 1 to 3 As shown, the folding door 100 with rotation limiting mechanism provided in this embodiment includes two sets of rotation limiting mechanisms 103. The two sets of rotation limiting mechanisms 103 are symmetrically arranged on the upper and lower sides of the folding door 100 with rotation limiting mechanism, so as to improve the smoother movement of the first movable door 101 and the second movable door 102 driven by the rotation limiting mechanism 103 and achieve upper and lower balance.

[0081] Furthermore, a locking mechanism 60 is provided between the first side portion 101a of the first movable door and the first fixed column 201. When the folding door 100 equipped with the rotation limiting mechanism is in the closed state, the locking mechanism 60 can lock the folding door 100 equipped with the rotation limiting mechanism. The locking mechanism 60 can adopt various lock types such as mechanical lock, electromagnetic lock, and smart lock.

[0082] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0083] The folding door and fence system with a rotation limiting mechanism provided by this utility model has been described above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A folding door equipped with a rotation limiting mechanism, for installation between the access passage formed by the first fixed column and the second fixed column; It includes a first movable door and a second movable door; the first movable door and the second movable door are hinged to each other to form a first rotation axis; the second movable door is hinged to a second fixed column to form a second rotation axis; the first movable door can rotate around the first rotation axis, and the second movable door can rotate around the second rotation axis. characterized in that It also includes a rotation limiting mechanism; The rotation limiting mechanism includes a first fixed seat at one end, a second fixed seat at the other end, and a limiting link connecting the first fixed seat and the second fixed seat; the first fixed seat is fixedly connected to the first movable door, and the second fixed seat is used to fixally connect to the second fixed column; one end of the limiting link is hinged to the first fixed seat to form a third rotation axis, and the other end of the limiting link is hinged to the second fixed seat to form a fourth rotation axis; A parallelogram is formed in the order of the first rotation axis, the second rotation axis, the fourth rotation axis, and the third rotation axis; when the second movable door rotates about the second rotation axis in a first direction, the first movable door rotates about the first rotation axis in the opposite direction of the first direction, and the facing of the first movable door remains constant; The first fixed base includes a first mounting part and a first extension part. The first mounting part is fixedly connected to the first movable door. One end of the limiting link is hinged to the first extension part to form a third rotation axis. The second fixed base includes a second mounting part and a second extension part. The second mounting part is used to fix the second fixed column. The other end of the limiting link is hinged to the second extension part to form a fourth rotation axis. The first extension and the second extension extend toward the same side of the second movable door.

2. The folding door equipped with a rotation limiting mechanism according to claim 1, characterized in that: The second side of the first movable door and the first side of the second movable door are hinged to each other by a plurality of hinge assemblies, so that the rotation range of the first movable door is limited to the first side of the folding door equipped with the rotation limiting mechanism; The second side of the second movable door is hinged to the hinged retaining ring on the second fixed column, so that the rotation range of the second movable door is limited to the opposite side of the first side of the folding door equipped with the rotation limiting mechanism.

3. The folding door equipped with a rotation limiting mechanism according to claim 1, characterized in that: The first mounting portion of the first fixed seat is inverted U-shape, fixedly mounted on the top of the first movable door, and fastened to the top of the first movable door with bolts; the first extension portion extends outward from the end of the first mounting portion along the straight line where the top of the first movable door is located. The second mounting portion of the second fixing seat is U-shaped and is used to be fixed to the side of the second fixing column and fastened to the side of the second fixing column with bolts; the second extension portion extends outward from the end of the second mounting portion and is inclined away from the second movable door.

4. The folding door equipped with a rotation limiting mechanism according to claim 1, characterized in that: The limiting link includes a first fisheye joint, a second fisheye joint, and a link body; The rotating end of the first fisheye connector is hinged to the first fixed base to form a third rotation axis, and the rotating end of the second fisheye connector is hinged to the second fixed base to form a fourth rotation axis. One end of the connecting rod body is threadedly fastened to the connecting end of the first fisheye connector, and the other end is threadedly fastened to the connecting end of the second fisheye connector.

5. The folding door equipped with a rotation limiting mechanism according to claim 1, characterized in that: It includes two sets of rotation limiting mechanisms, which are symmetrically arranged on the upper and lower sides of the folding door equipped with the rotation limiting mechanisms.

6. A fencing system, comprising a fence, a first fixed post, and a second fixed post; an access passage is formed between the first fixed post and the second fixed post; characterized in that It also includes a folding door equipped with a rotation limiting mechanism as described in any one of claims 1-5; The folding door equipped with a rotation limiting mechanism is installed between the entrance and exit channels, the second movable door is hinged to the second fixed column, and the second fixed seat is fixedly connected to the second fixed column; When the folding door equipped with the rotation limiting mechanism is in the closed state, the first movable door and the second movable door are on the same plane; during the movement of the folding door equipped with the rotation limiting mechanism, the rotation limiting mechanism keeps the facing of the first movable door parallel to the closed state.

7. The fencing system according to claim 6, characterized in that: The second fixed column is provided with several hinged fixing rings; The hinge fixing ring includes a ring sleeve and a hinge part, the hinge part being disposed on the side of the ring sleeve; the ring sleeve is sleeved and fixed on the second fixed column, and the second side of the second movable door is hinged to the hinge part.

8. The fencing system according to claim 7, characterized in that: The folding door, equipped with a rotation limiting mechanism, is configured to open outwards from the fence. The hinge portion is located near the outside of the folding door equipped with the rotation limiting mechanism, so that the rotation range of the second movable door is limited to the outside of the folding door equipped with the rotation limiting mechanism. The second side of the first movable door and the first side of the second movable door are hinged to each other by a plurality of hinge assemblies; the opening of the hinge assembly faces the outside of the folding door equipped with the rotation limiting mechanism, so that the rotation range of the first movable door is limited to the inside of the folding door equipped with the rotation limiting mechanism.

9. The fence system according to claim 6, characterized in that: A lock mechanism is arranged between the first side of the first movable door and the first fixed column, and the lock mechanism can lock the folding door provided with the rotation limiting mechanism when the folding door provided with the rotation limiting mechanism is in the closed state.

10. The fence system of claim 6, wherein: The second fixed seat comprises a second mounting portion and a second extending portion; the second mounting portion is a lateral U-shaped and is clamped and fixed to the side of the second fixed column; and the second extending portion is outwardly inclined and extended from the end of the second mounting portion.

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