Waterproof expansion joint

Abstract

The utility model discloses a waterproof expansion joint which comprises curtain wall keels arranged on the two sides of the expansion joint, a waterproof mechanism and a rubber plate are arranged between the two curtain wall keels, the two ends of the rubber plate are connected with the two curtain wall keels respectively, and the length of the rubber plate is larger than the distance between the two curtain wall keels. The waterproof mechanism comprises two fixed parts arranged on the two curtain wall keels respectively and at least one movable part arranged between the two fixed parts, the movable parts are connected with the fixed parts in a sliding mode, first sealing pieces are arranged at the joints of the movable parts and the fixed parts, and the expansion joint has the advantages of being good in sealing effect, high in connection stability and good in waterproof effect. The structure is simple and installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, specifically a waterproof expansion joint. Background Technology

[0002] Expansion joints in curtain walls are an important structural component in modern architecture used to address the thermal expansion and contraction caused by temperature changes. By installing structural joints at appropriate locations within the building, they allow for free expansion and contraction, preventing structural cracks or damage due to temperature variations. In curtain wall systems, the design of expansion joints must consider not only their function but also aesthetics and sealing. Traditional expansion joint treatments typically use connecting plates or bellows panels to accommodate deformation, but these methods often suffer from inconvenient installation and poor sealing. When moisture, dust, and other substances enter the building, they can easily affect the building's internal humidity and temperature, potentially impacting its quality. Furthermore, traditional expansion joints using single connecting plates or bellows panels do not provide adequate sealing. Existing expansion joints generally employ sliding components, but these components typically lack sealing or have poor sealing performance, potentially affecting the building's lifespan. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof expansion joint to solve the problems of poor waterproof effect and unstable connection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes curtain wall keels arranged on both sides of an expansion joint, a waterproof mechanism and a rubber sheet arranged between the two curtain wall keels, the two ends of the rubber sheet being connected to the two curtain wall keels respectively, the length of the rubber sheet being greater than the distance between the two curtain wall keels, the waterproof mechanism including two fixed parts respectively arranged on the two curtain wall keels and at least one movable part arranged between the two fixed parts, the movable part being slidably connected to the fixed parts, and a first sealing element being provided at the connection between the movable part and the fixed part.

[0005] As a further improvement of this utility model, both of the fixed parts include a base and a pressure plate. The base is fixed to the curtain wall keel, and the pressure plate is inserted into the base. The insertion point of the pressure plate and the base is an interference fit. After the pressure plate and the base are connected, a drainage groove is formed between them. The two sides of the movable part facing the fixed part are respectively placed in the drainage grooves on both sides. A second sealing element is provided between the base and the pressure plate.

[0006] As a further improvement of this utility model, the movable part is a movable plate, and the sides of the movable plate placed in the drainage grooves on both sides are inclined and extended towards the bottom of the drainage grooves to provide guide plates.

[0007] As a further improvement of this utility model, both pressure plates are provided with a first mounting groove for placing a first sealing element. The first sealing element is a cylindrical sealing strip, which is partially embedded in the first mounting groove. The outer peripheral wall of the cylindrical sealing strip can abut against the movable plate.

[0008] As a further improvement of this utility model, the pressure plate is provided with a slot, and the base is provided with two vertical walls corresponding to the slot position, with a gap between the two vertical walls. The vertical walls are inserted into the slot, and the outer peripheral wall of the vertical wall abuts against the inner peripheral wall of the slot. The second sealing element includes a first grid strip provided on the outer side wall of the vertical wall facing the drainage channel and a second grid strip provided on the inner wall of the slot corresponding to the position of the first grid strip. The first grid strip and the second grid strip are staggered, and two adjacent first grid strips and second grid strips are sealed. Compared with the prior art, this utility model provides a waterproof expansion joint with the following beneficial effects: This solution uses a sealing element at the connection between the movable part and the fixed part, which makes it difficult for rainwater or dust and other impurities in the atmosphere to enter the expansion joint when it expands and contracts, thus not affecting the expansion and contraction of the expansion joint and improving its service life. Moreover, the connection between the movable part and the fixed part is a position that is very easy for water and dust to leak in. Using a sealing element at a key position improves the sealing effect. The sealing structure used in this solution has a good sealing effect and is not likely to affect the expansion and contraction of the curtain wall expansion joint. In addition, the connection between the fixed part and the curtain wall keel is stable and easy to disassemble and assemble. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of the present invention;

[0010] Figure 2 This is an enlarged view of the structure of the first sealing element of this utility model;

[0011] Figure 3 This is a partial structural schematic diagram of the present invention;

[0012] Figure 4 This is a partial exploded view of the structure of the second sealing element of this utility model. Detailed Implementation

[0013] As shown in the figure, to achieve the above-mentioned objective, this utility model provides a waterproof expansion joint, including curtain wall keel 1 arranged on both sides of the expansion joint, a waterproof mechanism and a rubber plate 2 arranged between the two curtain wall keels 1, the two ends of the rubber plate 2 being connected to the two curtain wall keels 1 respectively, the length of the rubber plate 2 being greater than the distance between the two curtain wall keels 1, the waterproof mechanism including two fixed parts 4 respectively arranged on the two curtain wall keels 1 and at least one movable part 3 arranged between the two fixed parts 4, the movable part 3 being slidably connected to the fixed parts 4, and a first sealing member 5 being provided at the connection between the movable part 3 and the fixed part 4.

[0014] This solution employs a waterproofing mechanism consisting of two fixed parts 4, at least one movable part 3, and a first sealing element 5 located at the connection between the fixed parts 4 and the movable part 3. The fixed parts 4 are fixedly mounted on the curtain wall keel 1 to secure the movable part 3. The movable part 3 is slidably connected to the two fixed parts 4 on the sides of the curtain wall keel 1 facing both sides. When the building is affected by temperature, causing the curtain wall expansion joints to expand and contract, the movable part 3 can stably slide between the two fixed parts 4. This solution preferably uses one movable part 3 to save materials and reduce costs. In other solutions, those skilled in the art can also use multiple movable parts 3 connected together to improve aesthetics. Regardless of the number of movable parts 3 used, at least one movable part 3 should be able to connect with the curtain wall keel 1 on both sides of the expansion joint. The fixed part 4 on the frame 1 is connected to ensure the service life and stability of the expansion joint. The first sealing element 5 is a sealing structure used in this solution to prevent dust, moisture and other substances from entering the expansion joint. When one side of the movable part 3 is connected to the fixed part 4 on the corresponding side, the first sealing element 5 can make the movable part 3 and the fixed part 4 form a seal. When the movable part 3 moves, the first sealing element 5 slides along the movable part 3. At the same time, the first sealing element 5 can always maintain a sealed state when the movable part 3 and the fixed part 4 are connected until the movable part 3 and the fixed part 4 are separated. The rubber plate 2 in this solution is equivalent to the bellows plate or connecting plate used in traditional expansion joints. It can adapt to the deformation of the expansion joint to a certain extent and can also prevent some moisture and air from entering the interior of the building.

[0015] As a further improvement of this utility model, both of the fixed parts 4 include a base 42 and a pressure plate 41. The base 42 is fixed to the curtain wall keel 1, and the pressure plate 41 is inserted into the base 42. The insertion point of the pressure plate 41 and the base 42 is an interference fit. After the pressure plate 41 and the base 42 are connected, a drainage groove 6 is formed between them. The two sides of the movable part 3 facing the fixed part 4 are respectively placed in the drainage grooves 6 on both sides. A second sealing member 9 is provided between the base 42 and the pressure plate 41.

[0016] This solution uses a base 42 and a pressure plate 41. During installation, those skilled in the art first fix the base 42 to the curtain wall keel 1, and then press the pressure plate 41 onto the base 42 so that the two can be inserted and matched. Setting the insertion point of the pressure plate 41 and the base 42 as an interference fit makes the connection more stable and less prone to loosening. A drainage groove 6 is formed between the pressure plate 41 and the base 42. This solution sets a first sealing element 5 at the connection between the movable part 3 and the fixed part 4. When the first sealing element 5 does not completely block moisture or dust from the outside, these substances can enter the drainage groove 6 for discharge. The drainage groove 6 can provide secondary blocking of external substances to prevent them from entering the building. Furthermore, setting drainage grooves 6 on both sides of the fixed part 4 makes the blocking effect of external substances better and improves the service life.

[0017] As a further improvement of this utility model, the movable part 3 is a movable plate, and the sides of the movable plate placed in the drainage grooves 6 on both sides are inclined to extend and are provided with guide plates 7 towards the bottom of the drainage grooves 6.

[0018] This solution uses a movable plate with a guide plate 7 extending at an incline towards the bottom of the drainage trough 6. When moisture or dust passes through the first sealing element 5, the moisture and dust can be guided into the drainage trough 6 through the guide plate 7, preventing moisture, dust, and other substances from entering the interior of the building. The guide plate 7 has a guiding function, and when the expansion joint has a large expansion range, the inclined guide plate 7 can abut against the fixed plate, ensuring a stable connection and preventing it from easily loosening.

[0019] As a further improvement of this utility model, both pressure plates 41 are provided with a first mounting groove 8 for placing the first sealing element 5. The first sealing element 5 is a cylindrical sealing strip, which is partially embedded in the first mounting groove 8, and the outer peripheral wall of the cylindrical sealing strip can abut against the movable plate.

[0020] A cylindrical sealing strip is used as the first sealing element 5. Since the movable plate and the fixed part 4 are slidably connected, the cylindrical sealing strip has an arc-shaped outer peripheral wall that contacts the movable plate, making it easier for the movable plate to slide and less likely to affect the sealing effect. The cylindrical sealing strip is partially embedded in the first mounting groove 8, which can prevent the cylindrical sealing strip from falling out of the work position, and the positioning effect is good and does not affect the sealing.

[0021] As a further improvement of this utility model, the pressure plate 41 is provided with a slot 11, and the base 42 is provided with two vertical walls 10 corresponding to the slot 11. A gap is formed between the two vertical walls 10. The vertical walls 10 are inserted into the slot 11. The outer peripheral wall of the vertical wall 10 abuts against the inner peripheral wall of the slot 11. The second sealing member 9 includes a first grid bar 91 provided on the outer side wall of the vertical wall 10 facing the drainage groove 6 and a second grid bar 92 provided on the inner wall of the slot 11 corresponding to the position of the first grid bar 91. The first grid bar 91 and the second grid bar 92 are staggered and adjacent first grid bars 91 and second grid bars 92 are sealed.

[0022] This solution uses a slot 11 on a pressure plate 41 and a vertical wall 10 on a base 42. During installation, the slot 11 is positioned corresponding to the two vertical walls 10, so that the two vertical walls 10 are aligned with the inner sidewall of the slot 11. Then, those skilled in the art press the pressure plate 41 to insert both vertical walls 10 into the slot 11. Since the insertion point between the pressure plate 41 and the base 42 is an interference fit, continuous pressing of the pressure plate 41 allows the outer sidewall of the vertical wall 10 to abut against the inner sidewall of the slot 11. The outer sidewall of the vertical wall 10 facing the drainage trough 6 is used... The first grid bar 91 and the second grid bar 92, which are positioned corresponding to the first grid bar 91, are disposed on the inner wall of the slot 11. When the pressure plate 41 is inserted into the base 42, the first grid bar 91 is inserted into the gap between two adjacent second grid bars 92, or the second grid bar 92 is inserted into the gap between two adjacent first grid bars 91, so that the two are staggered and sealed. The second sealing element 9 can prevent water or dust in the drainage groove 6 from entering the building through the insertion point after the pressure plate 41 and the base 42 are inserted, thereby enhancing the sealing effect and connection strength and improving the service life.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A waterproof expansion joint, comprising curtain wall joists disposed on both sides of the expansion joint, a waterproof mechanism and a rubber sheet disposed between the two curtain wall joists, wherein both ends of the rubber sheet are respectively connected to the two curtain wall joists, and the length of the rubber sheet is greater than the distance between the two curtain wall joists, characterized in that, The waterproofing mechanism includes two fixed parts respectively disposed on two curtain wall keels and at least one movable part disposed between the two fixed parts. The movable part is slidably connected to the fixed parts, and a first sealing element is provided at the connection between the movable part and the fixed part.

2. The waterproof expansion joint according to claim 1, characterized in that, Both of the fixed parts include a base and a pressure plate. The base is fixed to the curtain wall keel, and the pressure plate is inserted into the base. The insertion point of the pressure plate and the base is an interference fit. After the pressure plate and the base are connected, a drainage groove is formed between them. The two sides of the movable part facing the fixed part are respectively placed in the drainage grooves on both sides. A second sealing element is provided between the base and the pressure plate.

3. The waterproof expansion joint according to claim 2, characterized in that, The movable part is a movable plate, and the sides of the movable plate placed in the drainage channels on both sides are inclined and extended towards the bottom of the drainage channels to provide guide plates.

4. The waterproof expansion joint according to claim 2 or 3, characterized in that, Both pressure plates are provided with a first mounting groove for placing a first sealing element. The first sealing element is a cylindrical sealing strip, which is partially embedded in the first mounting groove. The outer peripheral wall of the cylindrical sealing strip can abut against the movable plate.

5. The waterproof expansion joint according to claim 2 or 3, characterized in that, The pressure plate is provided with a slot, and the base is provided with two vertical walls corresponding to the slot position. A gap is formed between the two vertical walls. The vertical walls are inserted into the slot, and the outer peripheral wall of the vertical wall abuts against the inner peripheral wall of the slot. The second sealing element includes a first grid bar provided on the outer side wall of the vertical wall facing the drainage groove and a second grid bar provided on the inner wall of the slot corresponding to the position of the first grid bar. The first grid bar and the second grid bar are staggered, and two adjacent first grid bars and second grid bars are sealed.

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