Push-pull folding cabinet door system

Abstract

A push-pull folding cabinet door system comprises a cabinet body, the front end of the cabinet body is provided with an opening, the top of the opening is provided with an upper hanger rail, and the bottom of the opening is provided with a lower guide rail; one side of the first door body is mounted on the cabinet body through a fixed hinge, so that the first door body can swing to be opened and closed relative to the cabinet body; the other side of the first door body is connected with one side of the second door body through a hinge, and the first door body and the second door body can swing relative to each other and be folded to open the cabinet door. The top of the other side of the second door body is provided with a hanging door pulley block connected with the upper hanging rail, and the bottom of the other side of the second door body is provided with a guide pulley block connected with the lower guide rail. The beneficial effect of the invention is that the full-open effect of the cabinet door is realized. The problem that the opening degree of a traditional sliding door is limited is thoroughly solved, a user can easily store and take articles at any position in the cabinet without obstacles, and the utilization efficiency of the space in the cabinet and the taking and taking convenience are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of furniture hardware technology, specifically a sliding and folding cabinet door system. Background Technology

[0002] In daily life, the design of cabinet doors, especially wardrobes and storage cabinets, is crucial to the practicality, space utilization, and user experience of the furniture. Currently, the mainstream cabinet door systems on the market mainly include two types: sliding doors and hinged doors (i.e., outward-opening doors), but both of these forms have their own limitations.

[0003] Firstly, regarding sliding doors (also known as sliding doors or push-pull doors), their main characteristic is that multiple door panels slide on horizontal tracks, opening and closing the cabinet doors by overlapping the panels. This design avoids the problem of cabinet doors opening outwards and occupying front space, offering certain advantages in space-constrained environments. However, sliding doors have a significant drawback: regardless of the number of doors, usually only half or less of the cabinet width can be opened, severely restricting the retrieval of items inside. For example, in a two-door wardrobe, only the width of one door can be opened at a time, making it extremely inconvenient to access items in the middle area; for some large items, it may even be difficult to retrieve them smoothly. This limitation of "opening only halfway" greatly reduces the utilization efficiency of the cabinet space and the user's convenience, often requiring users to turn sideways or even bend over to reach the obstructed areas, resulting in very limited operating space.

[0004] Secondly, regarding traditional hinged doors (also known as swing doors), their characteristic is that the door panel is installed on the side of the cabinet via hinges and opens by swinging outwards. Hinged doors can usually be fully opened, making the interior space of the cabinet unobstructed and convenient for accessing items. However, the disadvantages of hinged doors are also prominent: when the cabinet door is fully opened, it swings outwards significantly, occupying a large amount of space in front of the cabinet. This means that when using hinged door cabinets, a passageway or operating area larger than the width of the door panel needs to be reserved in front of the cabinet. In the context of increasingly tight modern home space, this high requirement for usable space undoubtedly brings many inconveniences to home layout and daily activities. For example, in the bedroom, when the distance between the bed and the wardrobe is close, the hinged door may not be able to open fully, and may even collide with the bed or other furniture; in narrow hallways or small apartments, the opening of the hinged door often obstructs passage and affects the overall flow of the space. In addition, large hinged doors will experience significant dynamic loads and fatigue stress on their hinges during frequent opening and closing, which can easily lead to problems such as door panel sagging, hinge loosening, or damage over time.

[0005] In addition to the main drawbacks mentioned above, some existing cabinet door systems also have shortcomings in terms of operational stability, ease of installation, and flexibility of post-installation adjustments. For example, some multi-door linkage or sliding systems may experience jamming, shaking, or noise during operation, affecting the user experience. Furthermore, to ensure the long-term smooth operation of the cabinet door system, precise adjustments to the vertical height and horizontal position of the doors are often required during installation. However, the adjustment mechanisms provided in existing technologies may be complex in structure, cumbersome in operation, have low adjustment precision, or have a limited adjustment range, resulting in low installation efficiency. Moreover, if the doors sag or tilt, subsequent maintenance and adjustments are extremely inconvenient. Therefore, further improvements are necessary. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a sliding folding cabinet door system with a more compact structure, a more aesthetically pleasing appearance, better space utilization, a more convenient opening method, and more stable and easily adjustable operating performance.

[0007] The objective of this invention is achieved through the following means: a push-pull folding cabinet door system, which includes a cabinet body, an opening at the front end of the cabinet body, an upper hanging rail installed at the top of the opening, and a lower guide rail installed at the bottom of the opening; it also includes a first door body and a second door body, one side of the first door body is installed to the cabinet body by a fixed hinge, so that the first door body can swing open and close relative to the cabinet body. The other side of the first door is connected to one side of the second door via a hinge. The first door and the second door can swing and fold to open the cabinet door, or unfold and close the cabinet door. The second door is equipped with a hanging door pulley assembly on the top of the other side, which is connected to the upper hanging rail. The second door is equipped with a guide pulley assembly on the bottom of the other side, which is connected to the lower guide rail. The second door can slide relative to the upper hanging rail via the hanging door pulley assembly, and the second door can slide relative to the lower guide rail via the guide pulley assembly.

[0008] Furthermore, several fixed hinges are provided and installed on the cabinet and the first door in a vertically spaced manner.

[0009] Furthermore, the hinges are provided in several units, which are vertically spaced and installed on the first door body and the second door body.

[0010] Furthermore: the aforementioned door pulley assembly includes a pulley frame that is slidably installed in the upper hanging rail, with a hanging rod extending downward from the pulley frame; it also includes a height adjustment seat connected to the second door body via a movable hinge, with a hook groove at the top of the height adjustment seat, and the hook groove is connected to the hanging rod.

[0011] Furthermore: the height adjustment seat includes a base plate, a hook groove is provided on the top of the base plate, and a transverse sliding plate is stacked on the base plate. The transverse sliding plate has several transverse sliding grooves, and transverse guide rivets pass through the transverse sliding grooves and connect to the base plate. A transverse adjustment device is also provided between the transverse sliding plate and the base plate, and the transverse adjustment device drives the relative transverse displacement between the transverse sliding plate and the base plate.

[0012] Furthermore, the end face of the transverse plate is also covered with a height adjustment plate, which has a vertically extending height adjustment groove. The height adjustment rivet passes through the height adjustment groove and is riveted to the transverse plate. The movable hinge is installed on the height adjustment plate. A height adjustment device is also provided between the base plate and the height adjustment plate to drive the height displacement between the height adjustment plate and the base plate.

[0013] Furthermore: the lateral adjustment device includes a lateral adjustment bolt that is rotated and screwed onto the lateral sliding plate. A positioning ring is provided on the cylindrical surface of the lateral adjustment bolt. Correspondingly, a limit groove is provided on the base plate. The limit groove is engaged with the positioning ring and connected to the lateral adjustment bolt.

[0014] Furthermore: the guide pulley assembly includes a lower hinge connected to the second door body, and a lower base connected to the lower hinge. The lower base is provided with a guide groove, and the lifting frame is vertically slidably installed in the guide groove. A lower guide wheel is installed on the top of the lifting frame, and the lower guide wheel extends into the lower guide rail for sliding.

[0015] Furthermore, the lifting frame is also provided with an adjustment groove extending vertically. The height adjustment bolt passes through the adjustment groove and connects to the lower base. Tightening the height adjustment bolt locks the relative height between the lifting frame and the lower base.

[0016] Furthermore, the lifting frame is also equipped with a height adjustment nut seat, and an anti-detachment adjustment bolt is installed inside the height adjustment nut seat. An anti-detachment guide wheel is installed on the top of the anti-detachment adjustment bolt, and the anti-detachment guide wheel is snapped into the inner back of the lower guide rail and slides.

[0017] The beneficial effects of this invention are: 1. Simple structure, low production cost, and improved market competitiveness.

[0018] 2. This structure combines two opening methods: hinged doors and sliding doors. When the cabinet door is opened, the first and second doors fold and overlap each other. The second door then drives the entire structure to slide along a track to one side of the cabinet, fully exposing the entire cabinet opening and achieving a "fully open" effect. This completely solves the problem of limited opening of traditional sliding doors, allowing users to easily and unobstructed access to items anywhere inside the cabinet, greatly improving the utilization efficiency and convenience of the cabinet space.

[0019] 3. Because the first and second doors fold and overlap each other during opening, the two doors occupy only the thickness of one door panel after opening and slide along the side of the cabinet opening. Compared to traditional hinged doors, this overlapping and sliding opening and closing method greatly reduces the encroachment on the space in front of the cabinet when the doors are opened. Even when furniture such as beds and desks are close to the front of the cabinet, the cabinet door system of this invention can be opened and closed smoothly and conveniently, significantly improving the flexibility and practicality of home space layout.

[0020] 4. This invention, through the folding and sliding linkage of the two doors, can efficiently retract and slide large door panels. Even large cabinet doors can achieve a full opening effect normally and smoothly, while effectively storing the door body to the side. This solves the technical problem of opening and closing large cabinet doors and broadens the application scenarios of cabinet door systems, such as large storage cabinets and cloakroom entrances.

[0021] 5. To address potential sagging or misalignment of the door due to installation errors and long-term use, this invention incorporates lateral and height adjustment devices in the sliding door pulley assembly, enabling precise lateral and height adjustments to the door. These multi-dimensional adjustment mechanisms ensure accurate alignment of the cabinet door system during installation, guaranteeing uniform gaps between the door and the track. This ensures smooth, stable, and noiseless operation of the cabinet door during sliding and folding. Furthermore, these adjustment mechanisms are easy to operate and offer a wide adjustment range, significantly improving installation efficiency and facilitating subsequent maintenance and calibration.

[0022] 6. This invention also features anti-detachment adjusting bolts and anti-detachment guide wheels in the guide pulley assembly. The anti-detachment guide wheels snap onto the outer back of the lower guide rail and slide, effectively preventing the door from falling off the rail in the event of external impact or accidents, thereby significantly enhancing the safety of the cabinet door system and providing users with a more reassuring user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the door being in the closed state in this invention.

[0024] Figure 2 This is a schematic diagram of the door being in the open state in this invention.

[0025] Figure 3 This is a schematic diagram of the state after the door is closed and the cabinet is hidden in the present invention.

[0026] Figure 4 In this invention Figure 3 Enlarged view of the structure of part A.

[0027] Figure 5 In this invention Figure 3 Enlarged view of the structure of part B.

[0028] Figure 6 In this invention Figure 3 Enlarged view of the C-section structure.

[0029] Figure 7 In this invention Figure 3 Enlarged view of the structure of part D.

[0030] Figure 8 This is a schematic diagram of the state in which the door is open and the cabinet is hidden in the present invention.

[0031] Figure 9 In this invention Figure 8 Enlarged view of the E-section structure.

[0032] Figure 10 In this invention Figure 8 Enlarged view of the F-section structure.

[0033] Figure 11 , 12 This is a schematic diagram of the sliding door pulley assembly structure in this invention.

[0034] Figure 13 , 14 This is an assembly diagram of the sliding door pulley and decorative cover in this invention.

[0035] Figure 15 , 16 This is a schematic diagram of the structure of the sliding door pulley assembly hidden behind the decorative cover in this invention.

[0036] Figure 17 This is an exploded view of the sliding door pulley assembly structure in this invention.

[0037] Figure 18 , 19 Figures 20 and 20 are schematic diagrams of the guide pulley group structure in this invention.

[0038] Figure 21 This is an exploded view of the guide pulley assembly structure in this invention.

[0039] Explanation of reference numerals in the attached diagram: 1. Cabinet body; 2. Upper hanging rail; 3. Lower guide rail; 4. First door body; 5. Second door body; 6. Fixed hinge; 7. Hinge; 8. Hanging door pulley assembly; 81. Pulley frame; 82. Hanging rod; 83. Movable hinge; 84. Height adjustment seat; 841. Base plate; 8410. Limiting groove; 842. Horizontal sliding plate; 843. Horizontal sliding groove; 844. Horizontal guide rivet; 845. Height adjustment plate; 846. Height adjustment groove; 847. Height adjustment rivet; 848. Horizontal adjustment bolt; 849. Positioning ring; 85. Hook groove; 9. Guide pulley assembly; 91. Lower hinge; 92. Base; 93. Guide groove; 94. Lifting frame; 95. Adjustment groove; 96. Height adjustment bolt; 97. Height adjustment nut seat; 98. Anti-detachment adjustment bolt; 99. Guide wheel. Detailed Implementation

[0040] The invention will now be further described in detail with reference to the accompanying drawings. The invention provides a sliding folding cabinet door system, which cleverly combines the advantages of hinged doors and sliding doors. Through the coordinated action of various components, it achieves a fully open cabinet door effect, reduces space occupation, and provides convenient adjustment functions.

[0041] The specific implementation method is as follows: A push-pull folding cabinet door system includes a cabinet body 1, an opening is provided at the front end of the cabinet body 1, an upper hanging rail 2 is installed at the top of the opening, and a lower guide rail 3 is installed at the bottom of the opening; it also includes a first door body 4 and a second door body 5, one side of the first door body 4 is installed to the cabinet body 1 by a fixed hinge 6, so that the first door body 4 can swing open and close relative to the cabinet body 1. The other side of the first door 4 is connected to one side of the second door 5 via a hinge 7. The first door 4 and the second door 5 can swing and fold to open the cabinet door, or unfold and close the cabinet door. The second door body 5 is equipped with a door hanging pulley assembly 8 on the top of the other side, which is connected to the upper hanging rail 2. The second door body 5 is equipped with a guide pulley assembly 9 on the bottom of the other side, which is connected to the lower guide rail 3. The second door body 5 can slide relative to the upper hanging rail 2 through the door hanging pulley assembly 8, and the second door body 5 can slide relative to the lower guide rail 3 through the guide pulley assembly 9.

[0042] In this embodiment: when the cabinet door needs to be opened, the operator first pulls the first door 4, which swings outward around the fixed hinge 6. Since the second door 5 is connected to the first door 4 via a hinge 7 and is itself connected to the track via a pulley system, the second door 5 swings along with the first door 4 and simultaneously begins to slide on the track. In the fully open state, the first door 4 and the second door 5 fold and stack together, then slide as a whole along the upper hanging rail 2 and the lower guide rail 3 to one side of the cabinet opening, thus fully exposing the internal space of the cabinet. The operation is reversed when closing.

[0043] Compared with traditional technology, the combination of the hinged swing of the first door 4 and the sliding folding of the second door 5 allows the cabinet door to be fully opened, completely exposing the interior of the cabinet. This solves the problem that traditional sliding doors can only be opened halfway, greatly improving the convenience of accessing items inside the cabinet and the space utilization rate.

[0044] When the door is opened, the first door 4 and the second door 5 fold and overlap each other, greatly reducing the outward protruding space they occupy—to the thickness of a single door panel, far less than the space required by traditional hinged doors. This effectively solves the problem of hinged doors taking up too much front space. This allows the system to be used smoothly even in confined spaces or environments adjacent to other furniture.

[0045] In one embodiment, several fixed hinges 6 are provided and vertically spaced on the cabinet 1 and the first door 4. This means that multiple hinges fix the first door 4 to the cabinet 1 along its height.

[0046] In this embodiment, the vertically spaced distribution of multiple fixed hinges can more evenly distribute the weight of the first door 4 and the stress during opening, effectively preventing the door from sagging or deforming, and improving the stability and durability of opening and closing.

[0047] In one embodiment, several hinges 7 are provided and vertically spaced on the first door 4 and the second door 5. This means that multiple hinges connect the first door 4 and the second door 5 together.

[0048] In this embodiment, the vertical spacing of multiple hinges ensures the firmness of the connection between the first door 4 and the second door 5, and allows for more stable relative swinging during the folding and unfolding of the door, preventing the door from misaligning or shaking.

[0049] In one embodiment: the pulley system includes: Pulley bracket 81: This is the part that directly contacts the upper rail 2, and is slidably installed inside the upper rail 2 via internal pulleys.

[0050] Hanger 82: Extends downward from pulley bracket 81 and is used to connect to the lower door structure.

[0051] Height adjustment seat 84: It is connected to the second door body 5 via a movable hinge 83, which provides the basis for subsequent adjustment functions, while allowing the second door body 5 to swing slightly within a certain range.

[0052] Hook slot 85: Set at the top of the height adjustment seat 84, connected to the hanging rod 82, suspending the height adjustment seat 84 and the second door 5 below the hanging rod 82.

[0053] Through this structure, the sliding door pulley group 8 not only enables the smooth sliding of the second door body 5 on the upper rail 2, but also provides a basis for multi-dimensional adjustment of the door body.

[0054] In one embodiment: the height adjustment seat 84 includes: Base plate 841: As the basic component of the height adjustment seat 84, the hook groove 85 is set on its top.

[0055] Transverse sliding plate 842: It is stacked on the base plate 841 and can be moved laterally on the base plate 841.

[0056] Transverse sliding groove 843: is formed on the transverse sliding plate 842.

[0057] Lateral guide rivet 844: passes through the transverse sliding groove 843 and connects to the base plate 841, guides the transverse sliding plate 842 to make linear transverse displacement on the base plate 841, and prevents it from detaching.

[0058] Lateral adjustment device: It drives the relative lateral displacement between the transverse plate 842 and the base plate 841.

[0059] With this structure, the lateral position of the second door 5 can be adjusted by the displacement of the transverse sliding plate 842 on the base plate 841.

[0060] In this embodiment, the horizontal position of the second door 5 can be finely adjusted to compensate for errors during cabinet construction or installation, ensuring uniform gaps between doors and an aesthetically pleasing appearance. Simultaneously, precise lateral adjustment ensures that the door does not rub against the cabinet or adjacent doors during sliding, thereby reducing noise and extending service life.

[0061] In one embodiment: the height adjustment device. It includes: Height adjustment plate 845: Covers and is installed on the end face of the transverse plate 842.

[0062] Height adjustment groove 846: installed on height adjustment plate 845, extending vertically.

[0063] Height adjustment rivet 847: Passes through the height adjustment groove 846 and is riveted to the horizontal sliding plate 842, allowing the height adjustment plate 845 to move vertically relative to the horizontal sliding plate 842.

[0064] Movable hinge 83: Installed on the height adjustment plate 845 and connected to the second door body 5.

[0065] Height adjustment device: The height displacement between the height adjustment plate 845 and the base plate 841 is indirectly achieved by the height adjustment plate relative to the horizontal sliding plate and the horizontal sliding plate relative to the base plate.

[0066] With this structure, the vertical height of the second door 5 can be adjusted by the vertical displacement of the height adjustment plate 845 on the horizontal sliding plate 842.

[0067] In this embodiment, the door height can be precisely adjusted to compensate for installation errors caused by unevenness in the ground or top track, ensuring the door remains level during sliding. Simultaneously, it allows for easy adjustment to restore the original height should the door sag slightly after prolonged use, thus extending the door's lifespan.

[0068] In one embodiment, the lateral adjustment device includes: Lateral adjusting bolt 848: Rotatably screwed onto the transverse sliding plate 842. By rotating the bolt, the transverse sliding plate 842 can be moved laterally relative to the base plate 841.

[0069] Positioning ring 849: Set on the cylindrical surface of the transverse adjusting bolt 848.

[0070] Limiting groove 8410: It is set on the base plate 841, and its structure corresponds to the positioning ring 849. It is snapped into the positioning ring 849 and connected to the transverse adjusting bolt 848.

[0071] By rotating the lateral adjustment bolt 848, the bolt will rotate within the transverse plate 842 and generate axial displacement. At the same time, the positioning ring 849 cooperates with the limiting groove 8410 on the base plate 841 to convert the axial displacement of the bolt into the lateral displacement of the transverse plate 842 relative to the base plate 841, thereby achieving precise adjustment.

[0072] In this embodiment, very precise lateral displacement can be achieved through bolt rotation adjustment, meeting high-precision installation requirements. The cooperation between the positioning ring and the limiting groove not only guides the adjustment but also ensures reliable locking after adjustment, preventing the door from shifting during use. Compared to complex mechanisms, bolt adjustment is generally more intuitive and easier to operate.

[0073] In one embodiment: the guide pulley assembly 9 includes: Lower hinge 91: Connected to the second door body 5, used to connect the guide pulley assembly and the door body.

[0074] Lower base 92: Connected to lower hinge 91, it is the basic component of the guide pulley block.

[0075] Guide groove 93: is provided on the lower base 92.

[0076] Lifting frame 94: It is vertically slidably installed in the guide groove 93, which means that the lifting frame can move vertically in the guide groove to prepare for subsequent height adjustment.

[0077] Lower guide wheel 99: Installed on top of the lifting frame 94 and extends into the lower guide rail 3 to slide, providing guidance and support for the bottom of the door.

[0078] This structure ensures stable sliding and guidance of the bottom of the second door 5 on the lower guide rail 3.

[0079] In this embodiment, the guide pulley group 9 provides stable support and guidance for the bottom of the second door 5, ensuring that the door does not deviate from the track during sliding and runs smoothly.

[0080] In one embodiment, the bottom of the guide pulley assembly 9 is equipped with a height adjustment function. This includes: Adjustment groove 95: Extends vertically and is installed on the lifting frame 94.

[0081] Height adjustment bolt 96: passes through the adjustment groove 95 and connects to the lower base 92.

[0082] By tightening the height adjustment bolt 96, the bolt head presses against the lifting frame 94, thereby locking the relative height between the lifting frame 94 and the lower base 92. Loosening the bolt allows the lifting frame to slide up and down within the adjustment groove 95, thus adjusting the height of the lower guide wheel. Once the lower guide wheel height is adjusted to the correct position, tightening the bolt locks the adjusted height, preventing accidental displacement during use and ensuring stability.

[0083] In one embodiment: the lifting frame 94 is also provided with a height adjustment nut seat 97; Adjustment nut seat 97: Located on the lifting frame 94. Anti-loosening adjusting bolt 98: It is set in the height adjusting nut seat 97 and its extension length can usually be adjusted by rotation.

[0084] Anti-detachment guide wheel 910: Installed on top of anti-detachment adjusting bolt 98, this guide wheel can be snapped onto the outer back of the lower guide rail 3 and slide.

[0085] During normal use, the anti-detachment guide wheel maintains a certain gap with the outer back of the lower guide rail 3. When the door is subjected to an unexpected upward force or impact, the anti-detachment guide wheel will lock onto the outer back of the lower guide rail 3, effectively preventing the lifting frame 94 and the door from detaching from the lower guide rail 3. This effectively prevents the door from falling off the track due to accidental collisions, strong winds, or other external forces, greatly improving the safety of the cabinet door system and avoiding potential injury or property damage. At the same time, it ensures that the door always stays within the track and remains stable even under impact, thereby improving the overall reliability of the system.

[0086] In summary, this sliding folding cabinet door system, through its ingenious linkage design, achieves a "fully open" effect for the cabinet doors and effectively solves the pain points of traditional cabinet doors in terms of space occupation and ease of use. Its core working principle is: Split-type linkage folding: The system consists of a first door 4 and a second door 5. The first door 4 is connected to the cabinet 1 via a fixed hinge 6 in the form of a hinged door, achieving an initial outward swing. The second door 5 is connected to the first door 4 via a hinge 7, allowing the two doors to fold together during opening. This split structure allows the doors to be efficiently "folded up".

[0087] Folding and sliding to full opening: The second door 5 is the main driving and sliding component of the entire system. Its top is suspended from the upper rail 2 via the hanging door pulley assembly 8, and its bottom is guided to the lower rail 3 via the guide pulley assembly 9. When the first door 4 and the second door 5 are folded and stacked together, the entire door panel assembly can slide laterally along the upper and lower rails to one side of the cabinet opening. Finally, the entire cabinet opening is fully released, achieving a 100% full opening effect, greatly facilitating the retrieval of items.

[0088] To ensure stable long-term operation and ease of installation, the system incorporates multiple stabilization and adjustment mechanisms at key connection points. Multiple sets of fixed hinges 6 and hinges 7 guarantee a secure connection between door panels. More importantly, the hanging door pulley assembly 8 integrates lateral and height adjustment devices, allowing for precise horizontal and vertical position adjustments to compensate for installation errors and sagging caused by long-term use. The guide pulley assembly 9 also features bottom height adjustment, working in conjunction with the upper adjustment to ensure the door always maintains optimal operating condition.

[0089] Among them, the guide pulley group 9 is specially designed with anti-detachment adjustment bolt 98 and anti-detachment guide wheel. When the door is accidentally lifted by force, the anti-detachment guide wheel will lock onto the outer back of the lower guide rail 3, effectively preventing the door from derailing and greatly improving the safety of the system.

[0090] Through the coordinated work and functional combination of the above-mentioned components, the present invention provides a sliding folding cabinet door system with multiple advantages such as full opening function, efficient space utilization, stable and reliable operation, and convenient adjustment and maintenance, and therefore can be widely promoted and used.

[0091] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A sliding folding cabinet door system, characterized in that: It includes a cabinet (1), with an opening at the front end of the cabinet (1), an upper hanging rail (2) installed at the top of the opening, and a lower guide rail (3) installed at the bottom of the opening; it also includes a first door (4) and a second door (5), one side of the first door (4) is installed to the cabinet (1) by a fixed hinge (6), so that the first door (4) can swing open and close relative to the cabinet (1); The other side of the first door (4) is connected to one side of the second door (5) via a hinge (7). The first door (4) and the second door (5) can swing and fold to open the cabinet door, or unfold and close the cabinet door. The second door (5) is equipped with a door pulley assembly (8) on the top of the other side, which is connected to the upper rail (2). The second door (5) is equipped with a guide pulley assembly (9) on the bottom of the other side, which is connected to the lower guide rail (3). The second door (5) can slide relative to the upper rail (2) through the door pulley assembly (8), and the second door (5) can slide relative to the lower guide rail (3) through the guide pulley assembly (9).

2. The sliding folding cabinet door system according to claim 1, characterized in that: The fixed hinges (6) are provided in several units and are installed on the cabinet (1) and the first door (4) in a vertically spaced manner.

3. The sliding folding cabinet door system according to claim 1, characterized in that: The hinges (7) are provided in several units and are installed on the first door body (4) and the second door body (5) in a vertically spaced manner.

4. A sliding folding cabinet door system according to claim 1, characterized in that: The sliding door pulley assembly (8) includes a pulley frame (81) that is slidably installed in the upper rail (2), and a hanging rod (82) extending downward on the pulley frame (81); it also includes a height adjustment seat (84) connected to the second door body (5) via a movable hinge (83), and a hook groove (85) is provided on the top of the height adjustment seat (84), which is connected to the hanging rod (82).

5. A sliding folding cabinet door system according to claim 4, characterized in that: The height adjustment seat (84) includes a base plate (841), a hook groove (85) is provided on the top of the base plate (841), and a transverse sliding plate (842) is stacked on the base plate (841). The transverse sliding plate (842) has several transverse sliding grooves (843) and transverse guide rivets (844) pass through the transverse sliding grooves (843) and connect to the base plate (841). A transverse adjustment device is also provided between the transverse sliding plate (842) and the base plate (841). The transverse adjustment device drives the relative transverse displacement between the transverse sliding plate (842) and the base plate (841).

6. A sliding folding cabinet door system according to claim 5, characterized in that: The end face of the transverse plate (842) is also covered with a height adjustment plate (845). The height adjustment plate (845) is provided with a vertically extending height adjustment groove (846). The height adjustment rivet (847) passes through the height adjustment groove (846) and is riveted to the transverse plate (842). The movable hinge (83) is installed on the height adjustment plate (845). A height adjustment device is also provided between the base plate (841) and the height adjustment plate (845) to drive the height displacement between the height adjustment plate (845) and the base plate (841).

7. A sliding folding cabinet door system according to claim 5, characterized in that: The lateral adjustment device includes a lateral adjustment bolt (848) that is rotated and screwed onto the transverse plate (842). A positioning ring (849) is provided on the cylindrical surface of the lateral adjustment bolt (848). Correspondingly, a limiting groove (8410) is provided on the base plate (841). The limiting groove (8410) is snapped into the positioning ring (849) and connected to the lateral adjustment bolt (848).

8. A sliding folding cabinet door system according to claim 1, characterized in that: The guide pulley assembly (9) includes a lower hinge (91) connected to the second door body (5) and a lower base (92) connected to the lower hinge (91). A guide groove (93) is provided on the lower base (92). The lifting frame (94) is vertically slidably installed in the guide groove (93). A lower guide wheel (99) is installed on the top of the lifting frame (94). The lower guide wheel (99) extends into the lower guide rail (3) and slides.

9. A sliding folding cabinet door system according to claim 8, characterized in that: The lifting frame (94) is also provided with an adjustment groove (95) extending vertically. The height adjustment bolt (96) passes through the adjustment groove (95) and connects to the lower base (92). Tightening the height adjustment bolt (96) locks the relative height between the lifting frame (94) and the lower base (92).

10. A sliding folding cabinet door system according to claim 8, characterized in that: The lifting frame (94) is also provided with a height adjustment nut seat (97), and an anti-detachment adjustment bolt (98) is provided inside the height adjustment nut seat (97). An anti-detachment guide wheel (910) is installed on the top of the anti-detachment adjustment bolt (98), and the anti-detachment guide wheel (910) is snapped to the outer back of the lower guide rail (3) and slides.

Images