Double-stop Z-type interlocking seal wooden door
The dual-block Z-type interlocking sealing structure enables instantaneous locking and efficient sealing of sliding wooden doors, solving the problems of locking delay and poor sealing performance, and improving safety and sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOTAILONG DOOR IND CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-30
AI Technical Summary
Existing sliding wooden doors suffer from delayed locking and poor sealing. In particular, the delayed locking requires additional force for manual operation, and the insufficient sealing makes it difficult to meet the requirements of high sealing standards.
It adopts a dual-block Z-type interlocking sealing structure, which locks the door when it is closed by spring linkage between the locking block and the guide rod. Combined with the three-dimensional sealing design of the Z-type interface and the sealing gasket, it achieves dynamic sealing of the dual-block and improves airtightness and dustproof and waterproof effect.
It achieves instantaneous hard locking of the door, eliminates the risk of locking delay, improves sealing performance, blocks the intrusion of airflow and dust noise, and meets high sealing standards.
Smart Images

Figure CN224432352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building door and window technology, and in particular to a wooden door with a double-barrier Z-type interlocking seal. Background Technology
[0002] As a core component for dividing architectural space, the functionality and spatial adaptability of doors are of paramount importance. Wooden doors, due to their natural texture, environmental friendliness, and excellent sound and heat insulation properties, are widely used in both residential and commercial applications. Traditional hinged doors require reserved space for a fan-shaped opening, while horizontal sliding wooden doors open and close by moving horizontally along a track, significantly reducing space occupancy and making them particularly suitable for narrow passageways or compact residences. These doors are suspended above the doorway via a pulley system, allowing for linear movement parallel to the wall, making them a common solution for optimizing space design.
[0003] To further improve space utilization, existing technologies have developed sliding composite wooden doors. These doors open in a swing mode to avoid obstacles and slide parallel to the side wall, saving space. They are especially suitable for areas with dense furniture or scenarios where it is necessary to avoid protruding wall structures, demonstrating the innovative adaptability of wooden door structures to modern spatial constraints.
[0004] While existing sliding wooden doors excel in space efficiency, their core shortcomings lie in insufficient locking immediacy and sealing performance: Locking delay requires additional manual operation of the independent lock after the sliding door is closed, failing to achieve instantaneous linkage between the closing action and the locking mechanism, posing a safety hazard; sealing defects exist due to the limitations of the sliding track structure, resulting in linear gaps between the door leaf and the frame. Traditional sealing strips rely solely on unidirectional compression, offering weak sound insulation and noise reduction capabilities, as well as poor dust and water resistance, making them unsuitable for scenarios requiring high sealing standards. Utility Model Content
[0005] The technical problems to be solved by this utility model are locking delay and poor sealing performance. It provides a wooden door with double-barrier Z-type interlocking seal, which aims to solve the above-mentioned shortcomings.
[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a wooden door with double-block Z-type interlocking seal, including a door frame, a first door leaf and a second door leaf slidably connected to the top of the door frame, a Z-type interface provided on the inner side of the door frame, the first door leaf located on one side of the room, a lock block provided on the side of the door frame facing the room, a first guide rod slidably connected inside the door frame, the end of the first guide rod being connected to the lock block, a first return spring sleeved on the first guide rod, one end of the first return spring being connected to the first guide rod, and the other end being connected to the inside of the door frame, the lock block being limited and engaged with the first door leaf, and a sealing component for stabilizing and fixing the first door leaf being provided in the Z-type interface of the door frame.
[0007] A further preferred embodiment of this utility model is as follows: the sealing assembly includes a top block, a second guide rod is slidably connected to the inner side of the door frame, the top block is connected to the end of the second guide rod, the top block is located at the bend of the Z-shaped interface, a second return spring is provided inside the door frame, the second return spring is sleeved on the second guide rod, one end of the second return spring is connected to the door frame, and the other end is connected to the second guide rod.
[0008] A further preferred embodiment of this utility model is as follows: a bolt is provided at the overlapping part of the first door leaf and the second door leaf, the bolt passes through the first door leaf and is slidably connected to the second door leaf, and a third return spring is provided on the bolt, one end of the third return spring is connected to the first door leaf and the other end is connected to the bolt.
[0009] A further preferred embodiment of this utility model is as follows: an auxiliary block is connected to the end of the bolt rod, and a guide block is connected to the side of the second door leaf facing the room. The guide block surrounds the groove where the bolt rod slides, and the guide block is provided with an inwardly inclined surface.
[0010] A further preferred embodiment of this utility model is that a protective pad is connected to the side of the second door leaf that contacts the first door leaf.
[0011] A further preferred embodiment of this utility model is that a sealing gasket is provided at the Z-shaped interface of both the first door leaf and the second door leaf.
[0012] A further preferred embodiment of this utility model is that both the first door leaf and the second door leaf are provided with one-way glass.
[0013] A further preferred embodiment of this utility model is that both the first door leaf and the second door leaf are connected to handles, and the lock block is connected to the handles.
[0014] Compared with the prior art, the advantages of this utility model are: through the spring energy storage linkage between the locking block and the first guide rod, and in conjunction with the inclined guide system of the bolt rod-guide block, the two sets of locking mechanisms are simultaneously triggered to hard lock when the door is closed, achieving locking as soon as the door is closed, preventing the risk of delay in secondary operation, and improving safety protection; through the three-dimensional sealing structure of the Z-type interface, combined with the dual-stage action of top block pre-pressure and sealing gasket deformation, dynamic sealing of the double-blocking port is achieved, improving airtightness and blocking airflow exchange and dust and noise intrusion. Attached Figure Description
[0015] 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.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional view showing the connection relationship between the first and second door pages of this utility model.
[0018] Figure 3 This is a cross-sectional view of the mounting structure of the first reset spring and the locking block of this utility model;
[0019] Figure 4 This is a cross-sectional view of the mounting structure of the second reset spring and the top block of this utility model;
[0020] Figure 5 This is a cross-sectional view showing the connection relationship between the bolt and the protective pad of this utility model.
[0021] In the diagram: 1. Door frame, 2. First door leaf, 3. Second door leaf, 4. Lock block, 5. First guide rod, 6. First return spring, 61. Bolt rod, 7. Top block, 8. Second guide rod, 9. Second return spring, 10. Third return spring, 11. Auxiliary block, 12. Guide block, 13. Protective pad, 14. Sealing pad, 15. One-way glass, 16. Handle. Detailed Implementation
[0022] 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.
[0023] 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.
[0024] This embodiment mainly describes the structure of the wooden door, as follows:
[0025] Wooden doors with double-lock Z-type interlocking seals, such as... Figures 1-5As shown, the door frame includes a door frame 1, a first door leaf 2, a second door leaf 3, a lock block 4, a first guide rod 5, a first return spring 6, and a sealing assembly. The first door leaf 2 and the second door leaf 3 are slidably connected to the top of the door frame 1. A Z-shaped interface is provided on the inner side of the door frame 1. The first door leaf 2 and the second door leaf 3 are in staggered sliding contact. The first door leaf 2 is located on one side of the room. A lock block 4 is provided on the side of the door frame 1 facing the room. The first guide rod 5 is slidably connected inside the door frame 1. The end of the first guide rod 5 is connected to the lock block 4. The first return spring 6 is sleeved on the first guide rod 5. One end of the first return spring 6 is connected to the first guide rod 5, and the other end is connected to the inside of the door frame 1. The lock block 4 and the first door leaf 2 are in a limiting fit. The Z-shaped interlocking structure avoids the risk of derailment of traditional sliding doors and improves the stability of operation. A sealing assembly for fixing the first door leaf 2 is provided in the Z-shaped interface of the door frame 1.
[0026] like Figure 2 and Figure 4 As shown, the sealing assembly includes a top block 7, a second guide rod 8, and a second return spring 9. The second guide rod 8 is slidably connected to the inside of the door frame 1. The top block 7 is connected to the end of the second guide rod 8. The top block 7 is located at the bend of the Z-shaped interface. The second return spring 9 is provided inside the door frame 1. The second return spring 9 is sleeved on the second guide rod 8. One end of the second return spring 9 is connected to the door frame 1, and the other end is connected to the second guide rod 8.
[0027] like Figure 1 and Figure 5 As shown, it also includes a bolt rod 61 and a third return spring 10. A bolt rod 61 is provided at the overlapping part of the first door leaf 2 and the second door leaf 3. The bolt rod 61 passes through the first door leaf 2 and is slidably connected to the second door leaf 3. A third return spring 10 is provided on the bolt rod 61. One end of the third return spring 10 is connected to the first door leaf 2, and the other end is connected to the bolt rod 61. The bolt rod 61 and the locking block 4 form a double lock instantaneous linkage to eliminate locking delay.
[0028] like Figure 5 As shown, it also includes an auxiliary block 11 and a guide block 12. The end of the bolt 61 is connected to the auxiliary block 11, and the side of the second door leaf 3 facing the room is connected to the guide block 12. The guide block 12 surrounds the groove where the bolt 61 slides, and the guide block 12 is provided with an inwardly inclined slope. The slope design of the guide block 12 is tolerant to installation errors and reduces the assembly accuracy requirements.
[0029] like Figure 5 As shown, it also includes a protective pad 13. The protective pad 13 is connected to the side of the second door leaf 3 that contacts the first door leaf 2. The protective pad 13 reduces the frictional wear of the door leaf and extends the life of the sliding mechanism.
[0030] like Figure 2 and Figure 3As shown, it also includes a sealing gasket 14, and a sealing gasket 14 is provided at the Z-shaped interface of the first door leaf 2 and the second door leaf 3.
[0031] like Figure 1 As shown, it also includes one-way glass 15, and both the first door leaf 2 and the second door leaf 3 are provided with one-way glass 15.
[0032] like Figure 1 As shown, it also includes a handle 16. The first door leaf 2 and the second door leaf 3 are both connected to the handle 16, and the lock block 4 is connected to the handle 16.
[0033] When the operator opens the first door leaf 2 from the inside, they must first pull the auxiliary block 11 outward to slide the bolt 61 out of the engagement slot of the second door leaf 3. This process compresses the third return spring 10. At the same time, the operator presses down on the handle 16 on the lock block 4, pulling the lock block 4 out of the Z-shaped slot of the first door leaf 2, driving the first guide rod 5 to slide along the inner wall of the door frame 1 and compressing the first return spring 6. When the bolt 61 is completely separated from the second door leaf 3 and the lock block 4 is released, the stretched second return spring 9 immediately rebounds, pushing the second guide rod 8 outward, causing the top block 7 to push the first door leaf 2 away from the Z-shaped interface of the door frame 1. After releasing the handle 16 and the auxiliary block 11, the first return spring 6 extends, causing the lock block 4 to return to its original position against the door frame 1. The third return spring 10 then drives the end of the bolt 61 to slide along the side wall of the second door leaf 3, maintaining a semi-stretched state. At this time, the operator can slide the door leaf open by holding the handle 16 of the first door leaf 2 and pushing it horizontally. When it is necessary to completely open the passage, both door leaves can be directly removed.
[0034] When the first door leaf 2 is closed, its handle 16 is pushed so that the Z-shaped end is close to the door frame 1. The door leaf first presses against the top block 7, forcing the top block 7 to move inward and causing the second guide rod 8 to slide, stretching the second return spring 9 to store energy. As it continues to move, the door leaf presses against the locking block 4, pushing the first guide rod 5 inward and compressing the first return spring 6. When the door leaf is completely in contact with the door frame 1 and presses against the sealing gasket 14, the first return spring 6 releases its elastic force to drive the locking block 4 to accurately insert into the Z-shaped slot. At the same time, the bolt rod 61, pushed by the third return spring 10, slides along the inclined surface of the guide block 12 into the positioning hole of the second door leaf 3, achieving a double-point instantaneous hard lock. During this process, the sealing gasket 14 undergoes full elastic deformation within the Z-shaped interface, completely blocking airflow exchange.
[0035] The sealing gasket 14 fills all linear gaps to achieve airtight / watertight sealing; the protective gasket 13 reduces frictional wear between door panels; the one-way glass 15 supports the transmission of outdoor light and one-way observation from the inside; the handle 16 provides an ergonomic point of force application; the beveled design of the guide block 12 ensures the precise insertion of the bolt 61, effectively reducing the impact of assembly tolerances.
[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "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 that the utility model product is usually placed in during 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.
[0037] The above provides a detailed description of the double-barrier Z-type interlocking seal for wooden doors provided by this utility model. 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 various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A wooden door with double-blocked Z-shaped bite seal, characterized in that: The system includes a door frame (1), with a first door leaf (2) and a second door leaf (3) slidably connected to the top of the door frame (1). A Z-shaped interface is provided on the inner side of the door frame (1). The first door leaf (2) is located on one side of the room. A lock block (4) is provided on the side of the door frame (1) facing the room. A first guide rod (5) is slidably connected inside the door frame (1). The end of the first guide rod (5) is connected to the lock block (4). A first return spring (6) is sleeved on the first guide rod (5). One end of the first return spring (6) is connected to the first guide rod (5), and the other end is connected to the inside of the door frame (1). The lock block (4) is in a limiting fit with the first door leaf (2). A sealing component for stabilizing the first door leaf (2) is provided in the Z-shaped interface of the door frame (1).
2. The wooden door with double-stop Z-type interlocking seal according to claim 1, characterized in that: The sealing assembly includes a top block (7), a second guide rod (8) is slidably connected to the inside of the door frame (1), the top block (7) is connected to the end of the second guide rod (8), the top block (7) is located at the bend of the Z-shaped interface, a second return spring (9) is provided inside the door frame (1), the second return spring (9) is sleeved on the second guide rod (8), one end of the second return spring (9) is connected to the door frame (1), and the other end is connected to the second guide rod (8).
3. The wooden door with double-barrier Z-type interlocking seal according to claim 2, characterized in that: A bolt (61) is provided at the overlapping point of the first door leaf (2) and the second door leaf (3). The bolt (61) passes through the first door leaf (2) and is slidably connected to the second door leaf (3). A third return spring (10) is provided on the bolt (61). One end of the third return spring (10) is connected to the first door leaf (2), and the other end is connected to the bolt (61).
4. The wooden door with double-barrier Z-type interlocking seal according to claim 3, characterized in that: An auxiliary block (11) is connected to the end of the bolt (61), and a guide block (12) is connected to the side of the second door leaf (3) facing the room. The guide block (12) surrounds the groove on which the bolt (61) slides, and the guide block (12) is provided with an inwardly inclined slope.
5. The wooden door with double-stop Z-type interlocking seal according to claim 4, characterized in that: A protective pad (13) is connected to the side of the second door leaf (3) that contacts the first door leaf (2).
6. The wooden door with double-barrier Z-type interlocking seal according to claim 5, characterized in that: Both the first door leaf (2) and the second door leaf (3) have sealing gaskets (14) at their Z-shaped interfaces.
7. The wooden door with double-stop Z-type interlocking seal according to claim 6, characterized in that: Both the first door leaf (2) and the second door leaf (3) are provided with one-way glass (15).
8. The wooden door with double-stop Z-type interlocking seal according to claim 7, characterized in that: Both the first door leaf (2) and the second door leaf (3) are connected to handles (16), and the lock block (4) is connected to the handles (16).