Fabricated wallboard
By setting a sealing structure at the joints of prefabricated wall panels, and utilizing the inflation mechanism of protruding rods, slots, and rubber rods, combined with embedded grooves and silicone strips, the problem of water leakage at the joints of prefabricated wall panels is solved, improving waterproof performance and sealing effect.
Patent Information
- Application Number
- CN202511643093.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-02-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing prefabricated wall panels are prone to water leakage at the joints, resulting in poor waterproofing performance.
The system employs a sealed structure, utilizing the interlocking of a protruding rod and a slot, and leveraging the inflation mechanism of a rubber rod and a cylinder to enhance the sealing effect at the connection point. Additionally, an embedded groove and silicone strip are incorporated within the rectangular slot to further improve the sealing performance.
It effectively reduces the possibility of moisture entering the interior of the wall panel through the joints, improves the waterproof performance of the prefabricated wall panel, and enhances the sealing effect of the joints.
Smart Images
Figure CN121539083A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of assembled wallboards, and particularly relates to an assembled wallboard. BACKGROUND
[0002] The prefabricated building mainly includes prefabricated concrete structure, steel structure, modern wood structure building, etc., because the standardization design, factory production, assembly construction, information management and intelligent application are the representatives of modern industrialized production mode, the equipment in the building often adopts centralized indoor pipe fittings or box type bathroom, etc., so as to improve the degree of assembly, wherein the assembly of the box type bathroom is to first build a base, then build a framework on the base, then fix a wallboard with high waterproof performance on the framework, and finally paste ceramic tiles on the outer side of the wallboard.
[0003] When the assembled wallboard for bathroom is used, in order to prevent the internal moisture caused by long-time contact with water, a waterproof coating is usually coated on the surface of the wallboard, but the existing assembled wallboard has the problem that water easily enters the inside of the wallboard through the gap between the connecting parts of the wallboard, resulting in poor waterproof performance of the wallboard.
[0004] Therefore, a new scheme is provided to solve the defects and deficiencies in the prior art. SUMMARY
[0005] In order to solve the defects and deficiencies in the prior art, the present application provides an assembled wallboard.
[0006] In order to solve the above problems, the present application adopts the following technical scheme.
[0007] An assembled wallboard, comprising a first plate body and a second plate body connected to each other, the first plate body and the second plate body are connected through a sealing structure; Characterized in that: The sealing structure comprises a protruding rod fixed to one end of the first plate body and the second plate body, and a slot opened at the other end of the first plate body and the second plate body, the adjacent first plate body and the second plate body are connected through the protruding rod inserted into the slot; The inner end of the slot is provided with a rectangular groove, the protruding end of the protruding rod is fixedly connected with a rubber rod, and the rubber rod is inserted and matched with the rectangular groove; The inside of the protruding rod and the rubber rod is hollow and communicated with each other, one side of the protruding rod is fixedly connected with a cylinder, one end of the cylinder is communicated with the inside of the protruding rod and the rubber rod, and the other end of the cylinder is arranged to protrude from the inside of the first plate body and the second plate body; The outer wall of the cylinder is provided with an inflation hole, and the inner wall of the cylinder is slidably connected with a movable cylinder. The inflation hole and the air inlet hole are selectively aligned and communicated.
[0008] As a further preferred embodiment of the present application, the first plate body and the second plate body are of the same size, and the outer surfaces of the first plate body and the second plate body are provided with a waterproof coating.
[0009] As a further preferred embodiment of the present application, the two sides of the rectangular groove are respectively provided with an embedded groove, the diameter of the end of the embedded groove away from the rectangular groove is greater than the diameter of the end close to the rectangular groove, and the two sides of the rubber rod are fixedly provided with a silica gel strip, which can be located inside the embedded groove and correspondingly matched with the embedded groove.
[0010] As a further preferred embodiment of the present application, the inner wall of the embedded groove is arc-shaped.
[0011] As a further preferred embodiment of the present application, The first plate body and the second plate body are respectively provided with a half slot at the upper and lower ends of the side close to the slot, and an arc-shaped piece is rotatably installed in the half slot through a shaft rod, and one end of the arc-shaped piece is fixedly connected with the inner wall of the half slot through a rubber strip. The first plate body and the second plate body are respectively provided with a groove at the upper and lower ends of the side close to the convex rod, and a rotating shaft is rotatably connected with the inner wall of the groove, and a rotating rod is fixedly connected with the outer periphery of the rotating shaft, and a rotating elastic element is fixedly connected between one end of the rotating shaft and the inner wall of the groove. The half slot and the groove are correspondingly matched, and the axis of the rotating shaft and the axis of the shaft rod are perpendicular to each other.
[0012] As a further preferred embodiment of the present application, the inner wall of the groove is fixedly provided with an elastic limiting piece, and the elastic limiting piece is located on the inner side of the rotating rod.
[0013] As a further preferred embodiment of the present application, the outer end of the slot is slidably connected with a filling block, one end of the filling block is connected with the slot through a second elastic element, the outer end of the convex rod inserted into the slot is provided with an auxiliary groove, and the filling block is correspondingly matched with the auxiliary groove.
[0014] As a further preferred embodiment of the present application, the inner wall of the slot is fixedly connected with a positioning rod, and the filling block is slidably sleeved on the outer periphery of the positioning rod.
[0015] As a further preferred embodiment of the present application, the outer end of the cylinder is provided with a clamping groove, and the outer end of the cylinder is provided with a sealing block, and the side of the sealing block facing the cylinder is fixed with a protrusion, and the protrusion is correspondingly matched with the clamping groove.
[0016] As a further preferred embodiment of the present application, the inner side of the one-side embedded groove is provided with a detection hole, and the T-shaped block is slidably connected in the detection hole.
[0017] Compared with the prior art, the present application has the following advantages: (1) The present application provides an assembled wallboard, which is connected by inserting the protruding rod at the adjacent position into the corresponding slot, and the sealing effect at the connection position of the first plate body and the second plate body is further improved by inflating the cylinder, the protruding rod and the rubber rod, and the possibility of water entering the inside through the connection between the first plate body and the second plate body is further reduced.
[0018] (2) The present application provides an assembled wallboard, which is connected by inserting the protruding rod at the adjacent position into the corresponding slot, and the sealing effect at the connection position of the first plate body and the second plate body is further improved by inflating the cylinder, the protruding rod and the rubber rod, and the possibility of water entering the inside through the connection between the first plate body and the second plate body is further reduced.
[0019] (3) The present application provides an assembled wallboard, which is connected by inserting the protruding rod at the adjacent position into the corresponding slot, and the sealing effect at the connection position of the first plate body and the second plate body is further improved by inflating the cylinder, the protruding rod and the rubber rod, and the possibility of water entering the inside through the connection between the first plate body and the second plate body is further reduced. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 The overall structure of the present application is shown in the figure; Figure 2 The local cross-sectional structure of the first plate body at the top end is shown in the figure; Figure 3 The local cross-sectional structure of the first plate body at the top end is shown in the figure; Figure 4 The structure of the second plate body is shown in the figure; Figure 5 The structure of the second plate body is shown in the figure; Figure 4 The local enlarged structure of the A part of the present application is shown in the figure; Figure 6 The structure of the rubber rod in the present application is shown in the figure; Figure 7In this invention Figure 6 A magnified schematic diagram of the structure at point B; Figure 8 This is a partial cross-sectional structural diagram of the protruding rod in this invention; Figure 9 This is a schematic diagram of a partial cross-sectional structure at the cylindrical part of the present invention; Figure 10 This is a schematic diagram of a partial cross-sectional structure of the cylindrical part in this invention.
[0021] Explanation of the labels in the diagram: 1. First plate; 2. Sealing structure; 3. Second plate; 21. Slot; 22. Rectangular groove; 23. Protruding rod; 24. Rubber rod; 25. Cylinder; 26. Inflation hole; 27. First elastic element; 28. Movable cylinder; 29. Air inlet; 210. Half groove; 211. Arc-shaped piece; 212. Groove; 213. Rotating shaft; 214. Rotating elastic element; 215. Rotating rod; 216. Rubber strip; 217. Embedded groove; 218. Silicone strip; 219. Elastic limiting piece; 220. Second elastic element; 221. Filler block; 222. Auxiliary groove; 223. Positioning rod; 224. Slot; 225. Sealing block; 226. Protrusion; 227. T-shaped block; 228. Detection hole. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0023] [First Embodiment] Please see Figures 1-3 The first embodiment of the present invention provides a prefabricated wall panel, including a first panel 1 and a second panel 3. The first panel 1 and the second panel 3 have the same size, and the outer surfaces of the first panel 1 and the second panel 3 are provided with a waterproof coating. The first panel 1 and the second panel 3 are connected to each other through a sealing structure 2. The sealing structure 2 can further seal the connection between the first panel 1 and the second panel 3.
[0024] See Figures 1-10 In this embodiment, the sealing structure 2 includes a protruding rod 23 fixed to one end of the first plate 1 and the second plate 3, and a slot 21 opened at the other end of the first plate 1 and the second plate 3. The adjacent first plate 1 and the second plate 3 are engaged by the protruding rod 23 extending into the slot 21. Based on this, a rectangular groove 22 is provided at the inner end of the slot 21, and a rubber rod 24 is fixedly connected to the protruding end of the protruding rod 23. The rubber rod 24 can extend into the interior of the rectangular groove 22 and engage with the rectangular groove 22. In this embodiment, the protruding rod 23 and the rubber rod 24 are hollow inside and interconnected. A cylinder 25 is fixedly connected to one side of the protruding rod 23. One end of the cylinder 25 is connected to the inside of the protruding rod 23 and the rubber rod 24 so as to inflate the protruding rod 23 and the rubber rod 24 through the cylinder 25. The other end of the cylinder 25 extends out from the inside of the first plate 1 and the second plate 3 to facilitate the inflation action. An air inlet 26 is provided on the outer wall of the cylinder 25. A movable cylinder 28 is slidably connected inside the cylinder 25. One end of the movable cylinder 28 is connected to the inner wall of the cylinder 25 in an axially movable manner through a first elastic element 27. An air inlet 29 is provided on the outer wall of the movable cylinder 28. An annular protrusion is provided on the inner wall of the movable cylinder 28. The inflation port 26 and the air inlet port 29 are optionally aligned and connected. That is, when the movable cylinder 28 slides inside the cylinder 25 and compresses the first elastic element 27 until the inflation port 26 and the air inlet port 29 are aligned and connected, air can be injected into the protruding rod 23 and the rubber rod 24 through the cylinder 25. However, under the elastic restoring force of the first elastic element 27, the movable cylinder 28 slides back to its original position inside the cylinder 25 until the inflation port 26 and the air inlet port 29 are misaligned and closed. At this point, air can no longer be injected into the protruding rod 23 and the rubber rod 24 through the cylinder 25.
[0025] When installing the prefabricated wall panel, the first panel 1 and the second panel 3 are spliced together. The side of the second panel 3 with the protruding rod 23 is inserted horizontally into the side of the first panel 1 with the slot 21 until the protruding rod 23 enters the slot 21 and the outer surfaces of the first panel 1 and the second panel 3 are in contact with each other. The inflation tube of the inflation device is inserted into one end of the cylinder 25 until it abuts against the annular protrusion inside the movable cylinder 28 to limit and fix the inflation tube. Then, the movable cylinder 28 is pushed toward the first elastic member 27 and the first elastic member 27 is compressed until the inflation hole 26 is aligned and connected with the air inlet hole 29. The inflation device is controlled to inflate the movable cylinder 28. The air entering the movable cylinder 28 passes through the inflation hole 26 and the air inlet hole 29 in sequence and enters the interior of the protruding rod 23 and the rubber rod 24, causing the rubber rod 24 to gradually expand. The expanded rubber rod 24 will expand into the rectangular groove 22 of the first plate 1 until the rubber rod 24 fills the rectangular groove 22. Inflation continues until it becomes difficult to inflate further. Then, the inflation tube is pulled out, and the compressed first elastic element 27 returns to its original shape, pushing the movable cylinder 28 to slide back to its original position until the inflation hole 26 and the air inlet hole 29 are misaligned and closed, sealing the inside of the protruding rod 23 and the rubber rod 24. By inserting the protruding rods at adjacent positions into the corresponding slots, the adjacent plates are connected to each other. At the same time, by inflating the cylinder and the protruding rods and rubber rods connected to it, the rubber rods expand and fill the rectangular grooves inside the slots, thereby further improving the sealing effect at the connection between the first plate and the second plate and further reducing the possibility of moisture entering the inside through the connection between the first plate and the second plate.
[0026] Based on this, as a preferred option, please refer to Figures 2-10 The rectangular groove 22 has an inner groove 217 on each side. The diameter of the inner groove 217 away from the rectangular groove 22 is larger than the diameter of the inner groove 217 near the rectangular groove 22. Silicone strips 218 are fixedly installed on both sides of the rubber rod 24. The silicone strips 218 can be located inside the inner groove 217 and correspond to the inner groove 217. When the protruding rod 23 and the rubber rod 24 are inflated, the rubber rod 24 expands inside the rectangular groove 22. When the rubber rod 24 is fully inflated, the silicone strips 218 at both ends will continue to expand into the inner grooves 217 on both sides of the inner wall of the rectangular groove 22. The silicone strips 218 pass through the narrow part of the inner groove 217 and enter the inner side of the inner groove 217 to fill the inner groove 217. This further improves the filling and sealing effect of the rubber rod 24 after expansion, and further improves the filling and sealing effect of the sealing structure at the corner of the connection between the two plates. As a further preferred option, the inner wall of the recessed groove 217 is set to be arc-shaped, so that when the rubber rod 24 expands, the silicone strip 218 can be squeezed into the recessed groove 217 more easily, while also further increasing the contact area between the silicone strip 218 and the recessed groove 217, improving sealing stability. At the same time, the arc shape is also conducive to achieving flexible contact, so as to extend the service life while achieving sealing stability.
[0027] As a further preferred embodiment, during inflation, the inflation flow rate of the inflation device to the cylinder 25 is higher than the inflation flow rate of the inflation device to the silicone strip 218, so as to ensure that gas can be quickly filled from the cylinder 25 into the protrusion 23 and the rubber rod 24 at a faster inflation speed; while the inflation pressure of the inflation device to the cylinder 25 is lower than the inflation pressure of the inflation device to the silicone strip 218, so as to ensure that the silicone strip 218 can be inflated and expanded with a relatively large inflation pressure until it is squeezed into the inner groove 217 and other edge corner positions.
[0028] See Figures 3-10 In this embodiment, the first plate 1 and the second plate 3 are respectively provided with half-grooves 210 at the upper and lower ends of the side near the slot 21. The arc-shaped piece 211 is rotatably installed inside the half-grooves 210 by a shaft. One end of the arc-shaped piece 211 is fixedly connected to the inner wall of the half-grooves 210 by a rubber strip 216. Thus, the rubber strip 216 can further block water and impurities that seep into the connection position of the outer surface of the plate, and enhance the sealing and waterproof effect after the plate is spliced. The first plate 1 and the second plate 3 have grooves 212 at their upper and lower ends near the protruding rod 23. A rotating shaft 213 is rotatably connected to the inner wall of the groove 212. A rotating rod 215 is fixed to the outer circumference of the rotating shaft 213. A rotating elastic element 214 is fixedly connected between one end of the rotating shaft 213 and the inner wall of the groove 212. The rotating elastic element 214 can maintain the plane of the rotating rod 215 parallel to the planes of the first plate 1 and the second plate 3 under normal conditions, facilitating the movement of the arc-shaped plate 211 via the rotating rod 215. It is worth noting that in this embodiment, the rotating elastic element 214 can be a coil spring commonly used in the mechanical field, and its elastic coefficient must satisfy the condition that the rotating elastic element only functions when the applied external force exceeds its elastic limit. The rotating rod 215 will only rotate when compressed, in order to ensure the stability of the rotating rod 215 driving the arc-shaped piece 211 during movement and reduce the possibility of unexpected rotational deformation. The rotating elastic element 214 is set to replace the fixed connection structure to avoid deformation and damage to the rotating rod 215 that may be caused by unexpected collision or excessive external force. During the process of entering the half-groove 210, the contact between the rotating rod 215 and the arc-shaped piece 211 pushes the arc-shaped piece 211 to rotate towards the second plate 3 through the shaft, and pushes the rubber strip 216 at one end of the arc-shaped piece 211 to be squeezed, so that the end of the arc-shaped piece 211 away from the rubber strip 216 abuts against the outer surface of the second plate 3, further sealing the connection between the first plate 1 and the second plate 3 and improving the sealing effect. The half-groove 210 and the groove 212 are matched to effectively accommodate the internal rotating rod 215 and the arc-shaped piece 211, and the axis of the rotating shaft 213 is perpendicular to the axis of the shaft.
[0029] When the first plate 1 and the second plate 3 are spliced together, when the protruding rod 23 at one end of the second plate 3 is inserted into the slot 21 on one side of the first plate 1, the rotating rod 215 enters the half-groove 210 and one end contacts the arc-shaped piece 211, pushing the arc-shaped piece 211 to rotate around the shaft towards the second plate 3, and pushing the rubber strip 216 at the other end of the arc-shaped piece 211 to be squeezed, so that the end of the arc-shaped piece 211 away from the rubber strip 216 abuts against the outer surface of the second plate 3, further sealing the connection between the first plate 1 and the second plate 3 and improving the sealing effect. As one preferred embodiment, the end of the arc-shaped piece 211 away from the rubber strip 216 can be set to a cross-sectional shape that matches the outer surface of the second plate 3 to further improve the sealing performance. As another preferred embodiment, the end of the arc-shaped piece 211 away from the rubber strip 216 can be set to an arc-shaped cross-section to ensure sufficient sealing performance while also achieving a flexible abutment effect while contacting the outer surface of the second plate 3.
[0030] As a further preferred option, an elastic limiting piece 219 is fixedly provided on the inner wall of the groove 212. The elastic limiting piece 219 is located inside the rotating rod 215. The elastic limiting piece 219 can limit the rotating rod 215 from the inside to prevent the rotating rod 215 from rotating and deforming inward and becoming difficult to remove.
[0031] See Figures 3-10 In this embodiment, a filling block 221 is slidably connected to the outer end of the slot 21. One end of the filling block 221 is connected to the slot 21 through a second elastic member 220. An auxiliary groove 222 is provided on the outer end of the protrusion 23 that is inserted into the slot 21. The filling block 221 and the auxiliary groove 222 are correspondingly engaged. When the first plate 1 and the second plate 3 are spliced, the slider on the side of the first plate 1 near the slot 21 will enter the auxiliary groove 222 at the top of the second plate 3. After the first plate 1 and the second plate 3 are connected, the second elastic member 220 can push one end of the filling block 221 to press against the inner wall of the auxiliary groove 222 as much as possible under its own elasticity, thereby filling and sealing the top of the first plate 1 and the second plate 3, and further improving the sealing effect of the sealing structure 2.
[0032] Based on this, a positioning rod 223 is fixedly connected to the inner wall of the slot 21, and the filling block 221 is slidably sleeved on the outer periphery of the positioning rod 223. By setting the positioning rod 223, the angle of the filling block 221 during the sliding process can be limited, so as to avoid the unexpected deviation of the sliding angle of the filling block 221.
[0033] See Figures 3-10In this embodiment, a slot 224 is provided at the outer end of the cylinder 25, and a sealing block 225 is provided at the outer end of the cylinder 25. A protrusion 226 is fixed on the side of the sealing block 225 facing the cylinder 25. The protrusion 226 and the slot 224 are correspondingly engaged. When the first plate 1 and the second plate 3 are not used or after assembly, the two protrusions 226 on one side of the sealing block 225 can be inserted into the two slots 224 at one end of the cylinder 25, so that the sealing block 225 is installed at one end of the cylinder 25 to seal one end of the cylinder 25 and the movable cylinder 28, so as to prevent foreign objects from entering the interior of the cylinder 25 or the movable cylinder 28 and affecting the normal use of the movable cylinder 28 or the cylinder 25.
[0034] In addition, a detection hole 228 is provided inside the embedded groove 217 on one side. A T-shaped block 227 is slidably connected inside the detection hole 228. When the sealing structure 2 is used, after the silicone strip 218 fills into the inside of the embedded groove 217, it will push the T-shaped block 227 inside the embedded groove 217 to move outward inside the detection hole 228. This allows users to further understand the gas filling status inside the rectangular groove 22 and the embedded groove 217 from the appearance, improving the convenience of using the sealing structure 2.
[0035] The specific working process of this embodiment includes: When installing prefabricated wall panels, the first panel 1 and the second panel 3 are spliced together. The side of the second panel 3 with the protruding rod 23 is inserted horizontally into the side of the first panel 1 with the slot 21, so that the protruding rod 23 at one end of the second panel 3 enters the slot 21 on the outside of the first panel 1, and the outer surfaces of the first panel 1 and the second panel 3 are in contact with each other. At this time, one end of the rotating rod 215 of the second plate 3 will enter the half groove 210 of the first plate 1. During the process of the rotating rod 215 entering the half groove 210, one end will contact one end of the arc-shaped piece 211 and push the arc-shaped piece 211 to rotate in the direction of the second plate 3 through the shaft, and push the rubber strip 216 at one end of the arc-shaped piece 211 to be squeezed, so that the end of the arc-shaped piece 211 away from the rubber strip 216 abuts against the outer surface of the second plate 3. The inflation tube of the inflation device is inserted into one end of the cylinder 25 and pressed against the annular protrusion on the inner wall of the movable cylinder 28. Then, the movable cylinder 28 is pushed towards the cylinder 25 to control its inward movement and compress the first elastic element 27. When the movable cylinder 28 moves inward until the air inlet 29 on the outer wall of the movable cylinder 28 aligns and connects with the inflation hole 26 on the outer wall of the cylinder 25, the air entering the movable cylinder 28 will pass through the inflation hole 26 and the air inlet 29 in sequence and enter the interior of the protruding rod 23 and the rubber rod 24, inflating the interior of the rubber rod 24. The rubber rod 24 will gradually expand and expand into the rectangular groove 22 inside the first plate 1 until the rubber rod 24 fills the rectangular groove 22. When the rubber rod 24 is fully inflated, the silicone at both ends will... The silicone strip 218 continues to expand towards the embedded grooves 217 on both sides of the inner wall of the rectangular groove 22, allowing the silicone strip 218 to pass through the narrow part of the embedded groove 217 and enter the inner side of the embedded groove 217, filling the inside of the embedded groove 217. After the silicone strip 218 fills into the inside of the embedded groove 217, it will push the T-shaped block 227 inside the embedded groove 217 to move outward inside the detection hole 228. By observing that the T-shaped block 227 has extended out of the detection hole 228 and it is detected that it is difficult to continue the inflation process, the inflation tube of the inflation device is pulled out. The compressed first elastic element 27 returns to its original shape and pushes the movable cylinder 28 to move outward, so that the two air inlets 29 on the outer surface of the movable cylinder 28 are misaligned with the two inflation holes 26 on the outer surface of the cylinder 25, sealing the inside of the protruding rod 23 and the rubber rod 24. Next, insert the two protrusions 226 on one side of the sealing block 225 into the two slots 224 at one end of the cylinder 25, so that the sealing block 225 is installed at one end of the cylinder 25 to seal one end of the cylinder 25 and the movable cylinder 28, thus completing the splicing and sealing of the first plate 1 and the second plate 3.
[0036] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.
Claims
1. A prefabricated wall panel, comprising a first panel (1) and a second panel (3) connected to each other, wherein the first panel (1) and the second panel (3) are connected by a sealing structure (2); Its features are: The sealing structure (2) includes a protruding rod (23) fixed to one end of the first plate (1) and the second plate (3), and a slot (21) opened at the other end of the first plate (1) and the second plate (3). The adjacent first plate (1) and second plate (3) are connected by the protruding rod (23) extending into the slot (21). The inner end of the slot (21) is provided with a rectangular groove (22), and the protruding end of the protruding rod (23) is fixedly connected with a rubber rod (24), and the rubber rod (24) is inserted into the rectangular groove (22). The protruding rod (23) and the rubber rod (24) are hollow inside and interconnected. A cylinder (25) is fixedly connected to one side of the protruding rod (23). One end of the cylinder (25) is connected to the inside of the protruding rod (23) and the rubber rod (24). The other end of the cylinder (25) extends out from the inside of the first plate (1) and the second plate (3). An air inlet (26) is provided on the outer wall of the cylinder (25), and a movable cylinder (28) is slidably connected inside the cylinder (25). One end of the movable cylinder (28) is connected to the inner wall of the cylinder (25) in an axially movable manner through a first elastic element (27). An air inlet (29) is provided on the outer wall of the movable cylinder (28), and an annular protrusion is provided on the inner wall of the movable cylinder (28). The inflation port (26) and the air inlet port (29) are optionally aligned and connected.
2. The prefabricated wall panel according to claim 1, characterized in that: The first plate (1) and the second plate (3) are the same size, and the outer surfaces of the first plate (1) and the second plate (3) are both provided with a waterproof coating.
3. A prefabricated wall panel according to claim 1, characterized in that: The rectangular groove (22) has an embedded groove (217) on each side. The diameter of the end of the embedded groove (217) away from the rectangular groove (22) is larger than the diameter of the end close to the rectangular groove (22). The rubber rod (24) has silicone strips (218) fixedly installed on both sides. The silicone strips (218) can be located inside the embedded groove (217) and correspond to the embedded groove (217).
4. A prefabricated wall panel according to claim 3, characterized in that: The inner wall of the embedded groove (217) is set to be arc-shaped.
5. A prefabricated wall panel according to claim 1, characterized in that: The first plate (1) and the second plate (3) are provided with half-grooves (210) at the upper and lower ends of the side near the slot (21). The arc-shaped piece (211) is rotatably installed inside the half-grooves (210) through the shaft. One end of the arc-shaped piece (211) is fixedly connected to the inner wall of the half-grooves (210) through the rubber strip (216). The first plate (1) and the second plate (3) have grooves (212) at their upper and lower ends on the side near the protruding rod (23). The inner wall of the groove (212) is rotatably connected to a rotating shaft (213). A rotating rod (215) is fixed to the outer periphery of the rotating shaft (213). One end of the rotating shaft (213) is fixedly connected to the inner wall of the groove (212) with a rotating elastic element (214). The half-groove (210) and the groove (212) are correspondingly matched, and the axis of the rotating shaft (213) is perpendicular to the axis of the shaft rod.
6. A prefabricated wall panel according to claim 5, characterized in that: An elastic limiting piece (219) is fixedly provided on the inner wall of the groove (212), and the elastic limiting piece (219) is located on the inner side of the rotating rod (215).
7. A prefabricated wall panel according to claim 1, characterized in that: A filling block (221) is slidably connected to the outer end of the slot (21). One end of the filling block (221) is connected to the slot (21) through a second elastic element (220). An auxiliary groove (222) is provided on the outer end of the protrusion (23) that is inserted into the slot (21). The filling block (221) and the auxiliary groove (222) are correspondingly engaged.
8. A prefabricated wall panel according to claim 7, characterized in that: The inner wall of the slot (21) is fixedly connected to a positioning rod (223), and the filling block (221) is slidably sleeved on the outer periphery of the positioning rod (223).
9. A prefabricated wall panel according to claim 1, characterized in that: The outer end of the cylinder (25) is provided with a slot (224) and a sealing block (225) is provided at the outer end of the cylinder (25). A protrusion (226) is fixed on the side of the sealing block (225) facing the cylinder (25), and the protrusion (226) and the slot (224) are correspondingly engaged.
10. A prefabricated wall panel according to claim 3, characterized in that: A detection hole (228) is provided inside the embedded groove (217) on one side, and a T-shaped block (227) is slidably connected inside the detection hole (228).