A sealing structure of an assembled bathroom door
By employing a push-out mechanism and a detachable sealing structure, the problem of aging and deformation of the sealing strips in prefabricated bathroom doors is solved, achieving multi-directional sealing and convenient maintenance, improving the dry and wet separation effect and extending the service life of the sealing strips.
Patent Information
- Application Number
- CN202522106029.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
The sealing strips of traditional prefabricated bathroom doors age and deform after being exposed to bathroom moisture for a long time, making it impossible for them to fit snugly against the door, resulting in moisture leakage and poor dry-wet separation.
The device employs an ejection mechanism that uses a motor-driven bevel gear, a bidirectional threaded rod, and a gear rack to simultaneously push the side sealing block against the upper and lower sealing strips to achieve multi-directional sealing. The detachable mechanism design also facilitates the replacement and maintenance of the sealing strips.
It effectively prevents water vapor from escaping from the bathroom, improves the dry and wet separation effect, extends the service life of the sealing strip, reduces maintenance difficulty, and enables quick replacement of parts.
Smart Images

Figure CN224679406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building decoration and renovation, and in particular to a sealing structure for a prefabricated bathroom door. Background Technology
[0002] Prefabricated bathroom doors are modular door products based on the concept of prefabricated buildings, with factory prefabrication and rapid on-site assembly as their core features. They are specifically designed for bathroom spaces that are humid, susceptible to corrosion, and require high privacy. Unlike traditional doors that are made through on-site cutting, welding, and gluing, prefabricated bathroom doors have their core components, such as door leaf, door frame, hardware, and seals, manufactured in a standardized manner in the factory, pre-assembled or modularly disassembled, and then transported to the site for simple splicing and fixing for installation.
[0003] Prefabricated bathroom door sealing structure refers to a sealing system designed specifically for the characteristics of prefabricated bathroom doors to solve core pain points such as moisture overflow, odor diffusion, and poor sound insulation in bathroom spaces. It is a sealing system composed of multiple components working together. It is not a single sealing strip, but rather integrates the sealing function into prefabricated modules such as door frame, door leaf, and hardware interfaces. Through standardized pre-assembly in the factory and precise splicing on site, a full-dimensional sealing system is formed to ensure the dry and wet separation of the bathroom space and the comfort of use.
[0004] However, traditional prefabricated bathroom doors are susceptible to erosion from bathroom moisture overflow over time, which causes the sealing strips to age and deform, preventing them from adhering properly to the door body. This results in water and moisture overflowing from the bathroom and poor separation of wet and dry areas. To address this issue, a new sealing structure for prefabricated bathroom doors is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a sealing structure for a prefabricated bathroom door, which aims to improve the problem in the existing technology of traditional prefabricated bathroom doors where long-term exposure to bathroom moisture and erosion causes the sealing strip to age and deform, making it unable to continue to fit with the door body, resulting in the leakage of bathroom moisture and poor dry and wet separation.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure for a prefabricated bathroom door, comprising a bathroom door body, wherein an ejection mechanism is provided on the inner wall of the bathroom door body;
[0007] The ejection mechanism includes a motor, a bevel gear a fixedly connected to the motor's rotational output shaft, a bevel gear b meshing with the surface of bevel gear a, a bidirectional threaded rod passing through and fixedly connected to the rotational center of bevel gear b, a gear passing through and fixedly connected to the surface of the bidirectional threaded rod, a rack meshing with the surface of the gear, a sliding block fixedly connected to the end of the rack away from the gear, a connecting frame slidably connected to the sliding block, a side sealing block detachably mounted on the surface of the sliding block, push blocks slidably connected to both the upper and lower ends of the connecting frame, sealing strips detachably mounted on the surface of the push blocks, and a detachable mechanism provided on the surface of the connecting frame.
[0008] As a further description of the above technical solution: the detachable mechanism includes a pressing block, the bottom end of which is fixedly connected to a locking block, the locking block being elastically connected to the inner side wall of the bathroom door body by a spring, and the locking block engaging with a fixing block.
[0009] As a further description of the above technical solution: the motor is fixedly connected to the outer side wall of the connecting frame, and the bevel gear a is rotatably connected to the inner side wall of the connecting frame.
[0010] As a further description of the above technical solution: the bottom end of the rack is provided with a protrusion, the inner wall of the connecting frame is provided with a sliding groove, and the protrusion of the rack is slidably connected in the sliding groove of the connecting frame.
[0011] As a further description of the above technical solution: the upper and lower ends of the bidirectional threaded rod are both threadedly connected to push blocks, the inner side wall of the bathroom door body is provided with a cavity, and the connecting frame is slidably connected in the cavity of the bathroom door body.
[0012] As a further description of the above technical solution: the side sealing block is in contact with the side wall of the bathroom door body, and the two sets of sealing strips are in contact with the upper and lower surfaces of the bathroom door body.
[0013] As a further description of the above technical solution: the outer sidewall of the fixing block is fixedly connected to the outer sidewall of the connecting frame.
[0014] As a further description of the above technical solution: the pressing block is slidably connected to the surface of the bathroom door body.
[0015] As a further description of the above technical solution: one end of the spring is fixedly connected to the outer sidewall of the locking block, and the other end of the spring is fixedly connected to the inner sidewall of the bottom end of the bathroom door body.
[0016] As a further description of the above technical solution: the card block is slidably connected to the inner side wall of the bathroom door body.
[0017] This utility model has the following beneficial effects:
[0018] 1. In this utility model, a push-out mechanism is provided. Through the cooperation of a bevel gear, a bidirectional threaded rod and a gear rack driven by a motor, the side sealing block is pushed to fit against the upper and lower sealing strips to the door body, so as to achieve multi-directional sealing, effectively prevent bathroom water vapor from overflowing, improve the dry and wet separation effect, and even if the sealing strip ages and deforms and can no longer fit against the door body, the sealing strip can be pushed out by the push-out mechanism to extend its service life.
[0019] 2. In this utility model, a detachable mechanism is provided. Through the cooperation of the pressing block, the locking block and the spring, the connecting frame and the door can be disassembled and assembled without tools. When the sealing strip is worn or the motor or other components fail, the connecting frame can be quickly removed to replace the parts, avoiding the need to disassemble the entire door and reducing the difficulty of maintenance. The elastic locking design of the locking block and the fixing block ensures the connection stability and allows for flexible disassembly. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the sealing structure of the assembled bathroom door proposed in this utility model.
[0021] Figure 2 A partial three-dimensional cross-sectional view of the bathroom door body, which is a sealing structure of an assembled bathroom door proposed in this utility model.
[0022] Figure 3 This is a partial three-dimensional cross-sectional view of the connecting frame of the sealing structure of the assembled bathroom door proposed in this utility model.
[0023] Figure 4 A partial three-dimensional enlarged view of bevel gear a and bevel gear b of the sealing structure of an assembled bathroom door proposed in this utility model;
[0024] Figure 5 This is a partial three-dimensional cross-sectional view of the fixing block of the sealing structure of the assembled bathroom door proposed in this utility model.
[0025] Legend:
[0026] 1. Bathroom door body; 2. Push-out mechanism; 21. Motor; 22. Bevel gear a; 23. Bevel gear b; 24. Double-sided threaded rod; 25. Gear; 26. Rack; 27. Sliding block; 28. Pushing block; 29. Connecting frame; 210. Sealing strip; 211. Side sealing block; 3. Detachable mechanism; 31. Pressing block; 32. Locking block; 33. Spring; 34. Fixing block. Detailed Implementation
[0027] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a prefabricated bathroom door sealing structure, including a bathroom door body 1. An ejection mechanism 2 is provided on the inner wall of the bathroom door body 1. The ejection mechanism 2 includes a motor 21, which is the power source for the entire mechanism. The motor 21 is fixedly connected to the outer side wall of a connecting frame 29. The connecting frame 29 supports and fixes the motor 21. Without the motor 21, it will not rotate synchronously with the output shaft. A bevel gear a 22 is rotatably connected to the inner side wall of the connecting frame 29. The connecting frame 29 is used to... The bevel gear a22 serves as a support and fixation mechanism. The output shaft of the motor 21 is fixedly connected to the bevel gear a22. The output shaft of the motor 21 can drive the bevel gear a22 to rotate. The surface of the bevel gear a22 is meshed with the bevel gear b23. When the bevel gear a22 rotates, the bevel gear b23 on the meshing surface will rotate synchronously, converting the lateral rotation into vertical rotation. The rotation center of the bevel gear b23 is penetrated and fixedly connected to a bidirectional threaded rod 24. When the bevel gear b23 rotates, it will synchronously drive the bidirectional threaded rod 24 fixedly connected to the surface to rotate.
[0029] Reference Figure 1 - Figure 3The upper and lower ends of the bidirectional threaded rod 24 are threadedly connected to push blocks 28. The surface of the bidirectional threaded rod 24 has two sets of opposite threads. When the bidirectional threaded rod 24 rotates, the upper and lower sets of push blocks 28 can move closer together or further apart. A cavity is formed on the inner side wall of the bathroom door body 1. The connecting frame 29 is slidably connected within the cavity of the bathroom door body 1. The cavity of the bathroom door body 1 serves to limit and guide the connecting frame 29, ensuring that the connecting frame 29 can only slide within the cavity of the bathroom door body 1. The surface of the bidirectional threaded rod 24 is through and... A gear 25 is fixedly connected. Rotation of the bidirectional threaded rod 24 synchronously drives the gear 25 to rotate. A rack 26 meshes with the surface of the gear 25, synchronously driving the meshing rack 26 to slide left and right. A protrusion is provided at the bottom end of the rack 26. A sliding groove is provided on the inner wall of the connecting frame 29. The protrusion of the rack 26 is slidably connected within the sliding groove of the connecting frame 29. The sliding groove on the inner side wall of the connecting frame 29 serves to limit and guide the rack 26, ensuring that the rack 26 can only slide along the direction of the connecting frame 29. The rack 26 is furthest from the gear 25. A sliding block 27 is fixedly connected to the end of the door, and a connecting frame 29 is slidably connected to the sliding block 27. The sliding of the rack 26 synchronously drives the sliding block 27 to slide against the inner wall of the connecting frame 29. A side sealing block 211 is detachably installed on the surface of the sliding block 27. A snap-fit fixing clip is provided on the surface of the sliding block 27, which elastically secures the side sealing block 211. The side sealing block 211 contacts the side wall of the bathroom door 1 body. By pressing the side sealing block 211 against the side wall of the bathroom door 1 body, the bathroom door 1 body can be further sealed. Two sets of sealing strips 210 are connected to the bathroom door... The upper and lower surfaces of the door body 1 are in contact. The sealing strip 210 can continue to seal the bathroom door body 1 by pressing against the side wall of the bathroom door body 1. The upper and lower ends of the connecting frame 29 are slidably connected with push blocks 28. The connecting frame 29 limits and guides the push blocks 28 so that the push blocks 28 can only slide on the inner wall of the connecting frame 29. The sealing strip 210 is detachably installed on the surface of the push block 28. The surface of the push block 28 is provided with a snap-fit fixing clip, which fixes the sealing strip 210 by elastic snap-fit. The surface of the connecting frame 29 is provided with a detachable mechanism 3.
[0030] Reference Figure 2 - Figure 5The detachable mechanism 3 includes a pressing block 31. Pressing the pressing block 31 downwards causes the locking block 32 to move synchronously. The pressing block 31 is slidably connected to the surface of the bathroom door body 1, and the bathroom door body 1 provides support and guidance for the pressing block 31. The bottom end of the pressing block 31 is fixedly connected to the locking block 32, which is elastically connected to the inner side wall of the bathroom door body 1 by a spring 33. One end of the spring 33 is fixedly connected to the outer side wall of the locking block 32, and the other end of the spring 33 is fixedly connected to the inner side wall of the bottom end of the bathroom door body 1. The function of the spring 33 is to press the pressed block 31 after it has moved. The automatic reset is performed, and at the same time, the locking block 32 is re-engaged with the locking groove on the surface of the fixing block 34 to complete the fixation. The locking block 32 is engaged with the fixing block 34. The fixing of the locking block 32 and the fixing block 34 can achieve the effect of fixing the connecting frame 29, so that the connecting frame 29 is firmly fixed to the inner side wall of the bathroom door body 1. The outer side wall of the fixing block 34 is fixedly connected to the outer side wall of the connecting frame 29. The locking block 32 can fix the connecting frame 29 through the engagement of the fixing block 34 and the locking block 32. The locking block 32 is slidably connected to the inner side wall of the bathroom door body 1. The bathroom door body 1 plays a supporting and fixing role for the locking block 32.
[0031] Working Principle: Oxidation of the sealing strip 210 may cause it to lose elasticity, making it unable to seal tightly against the bathroom door body 1. In this case, the ejection mechanism 2 can push the sealing strip 210 out to maintain tight contact between the sealing strip 210 and the bathroom door body 1. First, the motor 21, fixed to the outer sidewall of the connecting frame 29, is started. The rotation output shaft of the motor 21 drives the bevel gear a22, which is fixedly connected to it, to rotate. Since bevel gear a22 and bevel gear b23 mesh with each other, the rotation of bevel gear a22 drives bevel gear b23 to rotate synchronously. The rotation center of bevel gear b23 is connected to a bidirectional threaded rod 24, so bevel gear b23 drives the bidirectional threaded rod 24 to rotate together. When the bidirectional threaded rod 24 rotates... The gear 25 fixedly connected to its surface will rotate accordingly, and the gear 25 will mesh with the rack 26, thereby driving the rack 26 to move. The sliding block 27 fixedly connected to the end of the rack 26 away from the gear 25 will also slide on the connecting frame 29. The side sealing block 211 detachably installed on the surface of the sliding block 27 will make close contact with the side wall of the bathroom door body 1 as the sliding block 27 slides, thus achieving a seal on the side of the door. On the other hand, both the upper and lower ends of the bidirectional threaded rod 24 are threadedly connected to the push block 28. The rotation of the bidirectional threaded rod 24 will drive the upper and lower push blocks 28 to slide on the connecting frame 29. The sealing strip 210 detachably installed on the surface of the push block 28 will make close contact with the upper and lower surfaces of the bathroom door body 1 as the push block 28 slides, thus achieving a seal in the vertical direction of the door.
[0032] When it is necessary to disassemble and maintain the connecting frame 29 and related sealing components, press the pressing block 31 that is slidably connected to the surface of the bathroom door body 1. The locking block 32, which is fixedly connected to the bottom end of the pressing block 31, will slide on the inner side wall of the bathroom door body 1. At the same time, it will compress the spring 33, which is fixedly connected to the outer side wall of the locking block 32, so that the locking block 32 is disengaged from the locking state of the fixing block 34. At this time, the connecting frame 29 can be slid out from the cavity opened inside the bathroom door body to complete the disassembly. When installing, the operation is reversed. The elastic restoring force of the spring 33 is used to make the locking block 32 re-lock with the fixing block 34 to fix the connecting frame 29.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sealing structure for a prefabricated bathroom door, comprising a bathroom door body (1), characterized in that: The inner wall of the bathroom door body (1) is provided with an ejection mechanism (2); The ejection mechanism (2) includes a motor (21), the output shaft of the motor (21) is fixedly connected to a bevel gear a (22), the surface of the bevel gear a (22) is meshed with a bevel gear b (23), the rotation center of the bevel gear b (23) is penetrated and fixedly connected to a bidirectional threaded rod (24), the surface of the bidirectional threaded rod (24) is penetrated and fixedly connected to a gear (25), the surface of the gear (25) is meshed with a rack (26), the end of the rack (26) away from the gear (25) is fixedly connected to a sliding block (27), the sliding block (27) is slidably connected to a connecting frame (29), the surface of the sliding block (27) is detachably installed with a side sealing block (211), the upper and lower ends of the connecting frame (29) are slidably connected with push blocks (28), the surface of the push blocks (28) is detachably installed with a sealing strip (210), and the surface of the connecting frame (29) is provided with a detachable mechanism (3).
2. The sealing structure of a prefabricated bathroom door according to claim 1, characterized in that: The detachable mechanism (3) includes a pressing block (31), and a locking block (32) is fixedly connected to the bottom end of the pressing block (31). The locking block (32) is elastically connected to the inner side wall of the bathroom door body (1) by a spring (33), and the locking block (32) is engaged with a fixing block (34).
3. The sealing structure of a prefabricated bathroom door according to claim 1, characterized in that: The motor (21) is fixedly connected to the outer side wall of the connecting frame (29), and the bevel gear a (22) is rotatably connected to the inner side wall of the connecting frame (29).
4. The sealing structure of a prefabricated bathroom door according to claim 1, characterized in that: The bottom end of the rack (26) is provided with a protrusion, and the inner wall of the connecting frame (29) is provided with a sliding groove. The protrusion of the rack (26) is slidably connected in the sliding groove of the connecting frame (29).
5. The sealing structure of a prefabricated bathroom door according to claim 1, characterized in that: The upper and lower ends of the bidirectional threaded rod (24) are threaded with push blocks (28), the inner side wall of the bathroom door body (1) is provided with a cavity, and the connecting frame (29) is slidably connected in the cavity of the bathroom door body (1).
6. The sealing structure of a prefabricated bathroom door according to claim 1, characterized in that: The side sealing block (211) is in contact with the side wall of the bathroom door body (1), and the two sets of sealing strips (210) are in contact with the upper and lower surfaces of the bathroom door body (1).
7. The sealing structure of a prefabricated bathroom door according to claim 2, characterized in that: The outer sidewall of the fixing block (34) is fixedly connected to the outer sidewall of the connecting frame (29).
8. The sealing structure of a prefabricated bathroom door according to claim 2, characterized in that: The pressing block (31) is slidably connected to the surface of the bathroom door body (1).
9. The sealing structure of a prefabricated bathroom door according to claim 2, characterized in that: One end of the spring (33) is fixedly connected to the outer side wall of the locking block (32), and the other end of the spring (33) is fixedly connected to the inner side wall of the bottom end of the bathroom door body (1).
10. The sealing structure of a prefabricated bathroom door according to claim 2, characterized in that: The locking block (32) is slidably connected to the inner side wall of the bathroom door body (1).