Folding door with upper track for bearing load

Abstract

The embodiment of the utility model discloses a folding door with an upper track for bearing, which comprises a frame, a leaf frame and an upper pulley assembly, the frame comprises an upper frame, a mounting groove is arranged in the upper frame, a track is arranged in the mounting groove, the upper pulley assembly comprises an upper pulley and a connecting piece, the upper pulley and the track are arranged in a sliding manner, and the upper pulley is connected with the leaf frame through the connecting piece. When the fan frame is subjected to external force, the fan frame moves relative to the frame; the upper frame is provided with an opening facing the external space, the mounting groove and the opening form an open space, and the upper pulley is detachably arranged in the open space. Compared with a traditional lower rail load-bearing folding door, the upper rail load-bearing folding door has the advantages that the upper rail load-bearing design is adopted, the load-bearing capacity of the folding door is improved, and even if the door leaf is high, the pulley device in the lower frame cannot bear overlarge pressure, so that the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of folding door technology, and in particular to a folding door with a load-bearing upper track. Background Technology

[0002] As society develops, people's pursuit of quality of life is getting higher and higher. The size of the entrance doors required for residences is getting wider and higher. Traditional hinged doors cannot be used in this scenario because of the load-bearing capacity of the hinges and the large space they occupy when opening. Sliding doors can only open half of the area at most, which contradicts the original intention of pursuing a large entrance door, so they cannot be used in this scenario either. Therefore, people have designed a door and window system that can meet the requirements of high load-bearing capacity, small space occupation when opening, and large opening area - the traditional folding door system.

[0003] However, existing traditional folding door systems on the market typically use a single lower track to support the weight of all door panels. This method has a drawback: the higher the door panel, the greater the tilting angle, which can easily lead to excessive pressure on the lower track, rollers, and guide wheels, affecting their lifespan or even rendering them unusable. A smaller number of folding doors use an upper track for load-bearing, but these tracks are generally enclosed, with rollers installed within them, making disassembly and maintenance difficult and resulting in higher costs. Utility Model Content

[0004] The purpose of this utility model is to provide a folding door with a top track for load-bearing, which aims to solve the technical problem that existing folding doors generally have closed tracks with pulleys installed inside, making disassembly and maintenance difficult and resulting in high costs.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0006] This utility model provides a folding door with a load-bearing upper track, including a frame, a sash frame, and an upper pulley assembly. The frame includes an upper frame with a mounting groove and a track inside the mounting groove. The upper pulley assembly includes an upper pulley and a connector. The upper pulley is slidably disposed with respect to the track and connected to the sash frame via the connector. When the sash frame is subjected to an external force, it moves relative to the frame. The upper frame has an opening facing the external space, and the mounting groove and the opening form an open space. The upper pulley is detachably disposed within the open space.

[0007] Furthermore, the upper pulley is installed in the mounting groove, the upper pulley is connected to the connector, and the fan frame is suspended on the upper frame through the connector.

[0008] Furthermore, the track has a protrusion, and the outer edge of the upper pulley has a groove, which slides relative to the protrusion.

[0009] Furthermore, the frame also includes a lower frame, on which a guide groove is provided, and a lower guide wheel is provided in the guide groove. One end of the lower guide wheel is movably connected to the guide groove, and the other end is fixedly connected to the fan frame.

[0010] Furthermore, the frame also includes two vertical frames. The upper frame is located at the top of the vertical frame and is fixedly connected to the vertical frame. The lower frame is located at the bottom of the vertical frame and is fixedly connected to the vertical frame. The upper frame, the lower frame, and the vertical frames together enclose the door space.

[0011] Furthermore, there are several fan frames arranged horizontally within the door space; a hinge is provided between two adjacent fan frames, and one of the fan frames closest to the two vertical frames is hinged to the vertical frame through the hinge.

[0012] Furthermore, a door leaf is provided inside the fan frame, and a sealing element is provided between the door leaf and the fan frame to achieve a good sealing effect between the door leaf and the fan frame.

[0013] Furthermore, the hinge is a hinge.

[0014] Furthermore, an installation component is provided between the fan frame and the connecting member, and the upper pulley is fixedly connected to the fan frame through the connecting member and the installation component.

[0015] Furthermore, a decorative cover is provided on one side of the upper pulley.

[0016] The advantages of this invention compared to existing technologies are as follows: This invention connects the upper frame and the leaf frame via upper pulleys, and utilizes the sliding connection between the upper pulleys and the track in the upper frame to allow the leaf frame to move back and forth within the frame. The upper pulleys and track support the leaf frame, thus fulfilling the load-bearing function of the upper track. Compared to traditional folding doors with lower track load-bearing, this invention adopts an upper track load-bearing design, which improves the load-bearing capacity of the folding door. Even if the door leaf is high, the pulley device in the lower frame will not bear excessive pressure, thereby extending its service life. Secondly, when the upper pulley needs repair or replacement, this invention allows for repair or replacement without disassembling the entire door frame, significantly reducing costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of the frame of a common traditional folding door structure on the market;

[0019] Figure 2 This is a cross-sectional view of the movable sash of a traditional folding door structure commonly found on the market.

[0020] Figure 3 A vertical sectional view of a common traditional folding door structure on the market;

[0021] Figure 4 A cross-sectional view of the frame of a folding door with upper track load-bearing provided for an embodiment of this utility model;

[0022] Figure 5 A cross-sectional view of the folding door frame with upper track load-bearing provided for an embodiment of this utility model;

[0023] Figure 6 A vertical sectional view of a folding door with a load-bearing upper track provided for an embodiment of this utility model;

[0024] Figure 7 A cross-sectional view of a folding door with a top track load-bearing structure provided for an embodiment of this utility model.

[0025] Figure label:

[0026] 1. Frame; 11. Top frame; 111. Track; 1111. Protrusion; 112. Mounting groove; 12. Bottom frame; 121. Guide groove; 13. Vertical frame; 2. Sash frame; 21. Hinge; 22. Door leaf; 23. Seal; 24. Mounting component; 3. Top pulley; 31. Groove; 32. Connector; 33. Decorative cover; 4. Bottom guide wheel;

[0027] 5. Border; 51. Vertical border; 52. Vertical border subframe; 53. Bottom border; 531. Track; 532. Edge guard; 54. Top border; 541. Guide groove; 6. Movable fan; 7. Lower pulley; 8. Upper guide wheel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] Please see Figures 1-3The invention discloses a common traditional folding door structure, whose main structure consists of a frame 5 and a movable panel 6. The frame 5 is composed of a vertical frame 51, a vertical frame subframe 52, a lower frame 53, and an upper frame 54. The lower frame 53 includes a track 531 and a retaining edge 532, and the upper frame 54 includes a guide groove 541. The movable panel 6 is composed of a movable panel profile and a molding. Furthermore, the standard hardware of the traditional folding door structure includes a lower roller 7 and an upper guide roller 8. The lower roller 7 acts on the track 531 to provide load-bearing support, while the upper guide roller 8 acts in the guide groove 541 to provide guidance. The sliding roller 7 operates within the track 531. Therefore, as the required size of the movable fan 6 increases, its weight also increases, and the tilt angle along the track 531 increases. This changes the surface contact between the sliding roller 7 and the track 531, and between the upper guide roller 8 and the guide groove 541, into point contact. This places higher demands on the track 531, the sliding roller 7, and the upper guide roller 8, significantly impacting their lifespan and potentially rendering them unusable. Furthermore, under wind pressure or other forces, the movable fan 6 may even sway, posing a safety hazard. Traditional folding door structures require the installation of both the sliding roller 7 and the upper guide roller 8 to meet the basic requirement for the movable fan 6 to slide. For aesthetic reasons, a retaining edge 532 is often designed on the lower frame 53 to conceal the sliding roller 7. Therefore, during installation, the sliding roller 7 must first be installed into the lower frame 53 using a through-groove method before assembling the frame 5. Therefore, this design often results in a problem where, when the lower roller 7 needs repair or replacement, the entire door frame must be disassembled to repair or replace it, which incurs extremely high costs.

[0033] Please see Figures 4 to 7 This utility model discloses a folding door with a load-bearing upper track, including a frame 1, a sash frame 2 and an upper pulley assembly. The frame 1 includes an upper frame 11, an mounting groove 112 is provided in the upper frame 11, and a track 111 is provided in the mounting groove 112. The upper pulley assembly includes an upper pulley 3 and a connector 32. The upper pulley 3 is slidably disposed with the track 111. The upper pulley 3 is connected to the sash frame 2 through the connector 32. When the sash frame 2 is subjected to external force, the sash frame 2 moves relative to the frame 1.

[0034] Specifically, in this embodiment, the upper frame 11 is made of high-strength material to ensure it can withstand the overall weight of the folding door and the dynamic load during operation. On the rear side of the upper frame 11, there is a mounting groove 112 that matches the upper pulley 3. The shape and size of the mounting groove 112 are precisely adjusted according to the design of the upper pulley 3 to ensure that the upper pulley 3 can be stably installed within it. The depth of the mounting groove 112 is sufficient to accommodate the upper pulley 3 and its connecting piece 32, while leaving appropriate clearance for sliding and adjustment. A precision-machined track 111 is provided within the mounting groove 112, which provides a stable and smooth sliding path for the pulley device. The cross-sectional shape of the track 111 is optimized to reduce friction and wear of the pulley during sliding, while ensuring the accuracy and stability of the sliding. The upper pulley 3 is a key component connecting the sash frame 2 and the track 111. The pulley is made of wear-resistant, low-friction material to ensure long-term stability and durability. One end of the upper pulley 3 is connected to the track 111 via a precision bearing or sliding mechanism to ensure smooth sliding of the pulley on the track 111. The other end is securely connected to the top of the leaf frame 2 via bolts, nuts, or other fasteners, forming a stable load-bearing structure. The leaf frame 2, as the main body of the folding door, consists of multiple leaf frame units connected together by connectors 32, forming a foldable continuous structure. Each leaf frame unit is equipped with an upper pulley 3, ensuring smooth and stable sliding of the entire folding door during opening and closing. Due to the robust design of the upper frame 11 and track 111, and the secure connection between the upper pulley 3 and the leaf frame 2 via connectors 32, the folding door can easily withstand significant weight, making it suitable for various high-load applications while reducing swaying and instability caused by gravity. Furthermore, the load-bearing design of the upper track 111 reduces the use and wear of the lower pulleys, thereby lowering maintenance and time costs.

[0035] like Figure 6 As shown, the upper frame 11 has an opening facing the external space, the mounting groove 112 and the opening form an open space, and the upper pulley 3 is detachably installed in the open space.

[0036] Specifically, the upper frame 11 has an opening facing the external space. This design is primarily to facilitate the installation, removal, and maintenance of the upper pulley 3. The shape and size of the opening are typically determined based on the shape and dimensions of the upper pulley 3 to ensure that the upper pulley 3 can smoothly enter and exit the open space. The upper pulley 3 is connected to the sash frame 2 via a specific installation method and is designed to be detachable. This means that when needed, the upper pulley 3 can be easily removed from the open space for replacement or repair. This design improves the maintainability and lifespan of the folding door and reduces maintenance costs.

[0037] like Figure 6As shown, the upper pulley 3 is installed in the mounting groove 112 and is connected to the connector 32. The fan frame 2 is suspended on the upper frame 11 through the connector 32.

[0038] Specifically, the sash frame 2 is suspended within the mounting groove 112 of the upper frame 11 via the connector 32. The weight and dynamic load of the sash frame 2 are transferred to the upper frame 11 and the track 111 via the connector 32 and the upper pulley 3. After installation, the position and angle of the sash frame 2 are adjusted to ensure optimal clearance and contact angle with the track 111. The connector 32 and the sash frame 2 are securely fixed to the upper frame 11 using bolts, nuts, or other fasteners. Through the synergistic action of the upper frame 11, the mounting groove 112, the upper pulley 3, and the connector 32, the sash frame 2 can be stably suspended on the upper frame 11 and maintain appropriate clearance and contact during sliding. This helps reduce loosening or deformation caused by vibration or impact, while also reducing the use and wear of the lower pulley, thereby improving the structural stability and service life of the folding door.

[0039] like Figure 4 and Figure 6 As shown, the track 111 has a protrusion 1111 inside, and the outer edge of the upper pulley 3 has a groove 31, which slides relative to the protrusion 1111.

[0040] Specifically, the outer edge of the upper pulley 3 is provided with a groove 31, which cooperates with the protrusion 1111 inside the track 111 to ensure good contact and support with the protrusion 1111 part of the track 111 during sliding. The design of the protrusion 1111 inside the track 111 increases the contact area and friction between the track 111 and the upper pulley 3, thereby improving the stability and precision of sliding. This reduces wobbling and instability during sliding, making the folding door more stable and smooth during opening and closing.

[0041] like Figure 6 As shown, the frame 1 also includes a lower frame 12, on which a guide groove 121 is provided, and a lower guide wheel 4 is provided in the guide groove 121. One end of the lower guide wheel 4 is movably connected to the guide groove 121, and the other end is fixedly connected to the fan frame 2.

[0042] Specifically, the guide groove 121 is a structure provided on the lower frame 12 to guide the sliding of the lower guide wheel 4. In this embodiment, one end of the lower guide wheel 4 is connected to the guide groove 121, and the other end is fixedly connected to the bottom of the door frame 2 by screws. Through the connection between the lower guide wheel 4 and the guide groove 121, the door leaf 22 can slide along a predetermined trajectory during opening and closing, thereby improving the stability of the door leaf 22. This design can also effectively prevent the door leaf 22 from shaking or deviating during sliding, ensuring that the movement trajectory of the door leaf 22 is accurate. The shape and size of the guide groove 121 are optimized according to the shape of the lower guide wheel 4 and the sliding requirements. The cross-sectional shape of the guide groove 121 can be a straight groove, a dovetail groove, or other shapes, depending on the design and application scenario of the folding door.

[0043] Under the influence of gravity, the fan frame 2 is in a natural vertical state. If there is wind pressure or other forces, the lower guide wheel 4 acts in the guide groove 121 to guide the movement of the fan frame 2, so that the upper pulley 3 and the track 111, as well as the lower guide wheel 4 and the guide groove 121, always maintain surface contact, which greatly improves the service life of the upper pulley 3, the track 111 and the lower guide wheel 4.

[0044] like Figures 6-7 The frame 1 also includes two vertical frames 13. The upper frame 11 is located at the top of the vertical frame 13 and is fixedly connected to the vertical frame 13. The lower frame 12 is located at the bottom of the vertical frame 13 and is fixedly connected to the vertical frame 13. The upper frame 11, the lower frame 12 and the vertical frame 13 together enclose the door space.

[0045] Specifically, the vertical frame 13 is typically designed as a long strip, with its height and width determined based on the size of the door panel 22 and design requirements. The upper frame 11 is located at the top of the vertical frame 13 and is fixedly connected to it. The connection method can be welding, bolting, snap-fitting, or other reliable methods. During the connection process, it is essential to ensure a firm and stable connection between the upper frame 11 and the vertical frame 13, without any obvious gaps or deformation. The lower frame 12 is located at the bottom of the vertical frame 13 and is fixedly connected to it. The connection method can also be welding, bolting, snap-fitting, etc. During the connection process, in addition to ensuring the firmness and stability of the connection, attention must be paid to the gap between the lower frame 12 and the ground or track 111 to ensure the folding door can open and close smoothly. The upper frame 11, lower frame 12, and vertical frame 13 are assembled according to design requirements to form a complete frame structure. During assembly, it is crucial to ensure that the connections between all components are firm and stable, and that the overall structure is flat without any obvious deformation or gaps. Through the construction and connection of the aforementioned frame 1, the upper frame 11, lower frame 12, and vertical frame 13 together enclose a door leaf space. This space is used to install the folding door leaf 22, ensuring that the door leaf 22 can slide stably on the track 111 during opening and closing, and maintain good sealing and sound insulation.

[0046] like Figure 7 As shown, there are several fan frames 2, which are arranged from left to right within the door space.

[0047] Specifically, depending on the design requirements and usage scenarios of the folding door, the number of leaf frames 2 can be several. These leaf frames 2 are typically arranged sequentially from left to right within the door space, forming a continuous folding structure. The number of leaf frames 2 can be flexibly adjusted according to the width and height of the door leaf 22 and the desired folding effect. Through the sequential arrangement of several leaf frames 2, the folding door can be flexibly unfolded and folded, thus making full use of the door space. This helps save interior space, making the interior layout more rational and aesthetically pleasing.

[0048] like Figures 6-7 As shown, the fan frame 2 is movably connected within the door space, and a hinge 21 is provided between two adjacent fan frames 2. One of the fan frames 2 closest to the two vertical frame 13 is hinged to the vertical frame 13 through the hinge 21.

[0049] Specifically, the sash frame 2 is one of the core components of the folding door, used to support and protect the door leaf 22. The design of the sash frame 2 typically takes into account strength, weight, and aesthetics. In this embodiment, the sash frame 2 is made of lightweight yet robust materials, such as aluminum alloy or stainless steel, to ensure it can withstand the weight of the door leaf 22 and maintain structural integrity during long-term use. During installation, one end of the hinge 21 is fixed to the sash frame 2, and the other end is fixed to the vertical frame 13 or an adjacent sash frame 2. By adjusting the tightness and angle of the hinge 21, the stability and smoothness of the sash frame 2 during opening and closing can be ensured.

[0050] like Figures 6-7 As shown, the fan frame 2 is also provided with a door leaf 22 inside, and the door leaf 22 and the fan frame 2 are provided with a sealing element 23 to form a good sealing effect between the door leaf 22 and the fan frame 2.

[0051] Specifically, in order to achieve a good seal between the door leaf 22 and the door frame 2, and to prevent external factors such as dust, moisture, and noise from entering the room, especially in situations requiring high airtightness and watertightness (such as bathroom doors and kitchen doors), a seal 23 is installed at the contact point between the door frame 2 and the door leaf 22. The seal 23 is usually made of elastic materials (such as rubber, silicone, EPDM, etc.), which have good elasticity and wear resistance, and can fit tightly against the door frame 2 when the door leaf 22 is closed, forming an effective sealing barrier.

[0052] It is understood that the hinge 21 in this embodiment is a hinge, but in other embodiments it may be a hinge or other structure, and the specific configuration can be made according to the actual situation.

[0053] like Figure 6 As shown, a mounting component 24 is provided between the fan frame 2 and the connector 32, and the upper pulley 3 is fixedly connected to the fan frame 2 through the connector 32 and the mounting component 24.

[0054] Specifically, the mounting component 24 is a key component connecting the sash frame 2 and the connector 32, and its design must match the sash frame 2 and the connector 32. In this embodiment, the mounting component 24 is a screw; in other embodiments, it can also be a rivet, bolt, or other connecting structure, depending on the actual situation. Through the synergistic effect of the mounting component 24, the connector 32, and the upper pulley 3, the connection between the sash frame 2 and the upper pulley 3 is more secure and reliable. This combined installation method can effectively reduce loosening or deformation caused by vibration or impact, and improve the structural stability of the folding door or sliding door.

[0055] like Figure 6 As shown, a decorative cover 33 is provided on one side of the upper pulley 3.

[0056] Specifically, after installing the upper pulley 3, installing the decorative cover 33 can conceal the upper pulley 3, thereby improving the aesthetics of the folding door. The decorative cover 33 also serves a safety protection function. An exposed upper pulley 3 may pose certain safety hazards, such as sharp edges that could injure people or damage property. Installing the decorative cover 33 effectively reduces these risks. In some cases, the upper pulley 3 may generate noise during sliding. The decorative cover 33 can act as a sound insulation material, reducing friction noise between the upper pulley 3 and the track 111, thus improving the user experience of the folding door. The decorative cover 33 also provides some protection for the upper pulley 3, preventing dust, dirt, and other debris from entering its interior and affecting its sliding performance and lifespan.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A folding door with a load-bearing upper track, characterized in that, The device includes a frame, a fan frame, and an upper pulley assembly. The frame includes an upper frame with a mounting groove and a track. The upper pulley assembly includes an upper pulley and a connector. The upper pulley is slidably disposed with respect to the track. The upper pulley is connected to the fan frame via the connector. When the fan frame is subjected to an external force, the fan frame moves relative to the frame. The upper frame has an opening facing the external space, the mounting groove and the opening form an open space, and the upper pulley is detachably installed in the open space.

2. The folding door with upper track load-bearing according to claim 1, characterized in that, The upper pulley is installed in the mounting groove and connected to the connector. The fan frame is suspended on the upper frame through the connector.

3. The folding door with upper track load-bearing according to claim 2, characterized in that, The track has a protrusion, and the outer edge of the upper pulley has a groove, which slides relative to the protrusion.

4. The folding door with upper track load-bearing according to claim 1, characterized in that, The frame also includes a lower frame, on which a guide groove is provided. A lower guide wheel is provided in the guide groove. One end of the lower guide wheel is movably connected to the guide groove, and the other end is fixedly connected to the fan frame.

5. The folding door with upper track load-bearing according to claim 4, characterized in that, The frame also includes two vertical frames. The upper frame is located at the top of the vertical frame and is fixedly connected to the vertical frame. The lower frame is located at the bottom of the vertical frame and is fixedly connected to the vertical frame. The upper frame, the lower frame and the vertical frame together enclose the door space.

6. The folding door with upper track load-bearing according to claim 5, characterized in that, The number of fan frames is several, and the fan frames are arranged horizontally in the door space; a hinge is provided between two adjacent fan frames, and one of the fan frames near the two vertical frames is hinged to the vertical frame through the hinge.

7. The folding door with upper track load-bearing according to claim 1, characterized in that, The fan frame is also equipped with a door leaf, and the door leaf and the fan frame are provided with a sealing element to form a good sealing effect between the door leaf and the fan frame.

8. The folding door with upper track load-bearing according to claim 6, characterized in that, The hinge is a hinge.

9. The folding door with upper track load-bearing according to claim 2, characterized in that, An installation component is provided between the fan frame and the connector, and the upper pulley is fixedly connected to the fan frame through the connector and the installation component.

10. The folding door with upper track load-bearing according to claim 9, characterized in that, A decorative cover is provided on one side of the upper pulley.

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