Connecting device for curtain wall deformation joint

Abstract

The utility model relates to the technical field of curtain wall deformation joints, and discloses a connecting device for a curtain wall deformation joint, which is used for connecting two curtain walls arranged at an interval, and comprises two fixing components, a connecting component and a connecting component, the first movable assembly is arranged between the two fixed assemblies, is elastically connected with the two fixed assemblies and is used for forming a telescopic structure with the fixed assemblies when the two curtain walls drive the two fixed assemblies to be far away from each other or close to each other; wherein the distance between the two curtain walls is equal to the extension width of one curtain wall. By arranging the connecting device, the deformation joint reserved between the curtain walls can be shielded; the distance between the two curtain walls is set to be equal to the extending width of one curtain wall, so that the distance between the two fixing assemblies is large, the maximum displacement between the curtain walls can meet the requirement for the width of a deformation joint of a building body, and the requirements for integrity and attractiveness of the outer vertical face of the building can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of curtain wall deformation joints, in particular to a connecting device for curtain wall deformation joints. Background Art

[0002] When curtain walls are used as the exterior facade of a building, they are usually installed throughout the entire building for aesthetic reasons. However, buildings often occupy relatively large areas, so multiple expansion joints must be installed along the length and width of the building to prevent deformation caused by external factors, resulting in cracking or even damage.

[0003] The prior art discloses a deformation joint system for glass curtain wall and top aluminum plate, such as Figure 1 As shown, the expansion joint system of the top aluminum plate includes: aluminum alloy columns 01 on both sides of the expansion joint, the two aluminum alloy columns 01 fixedly connected to the glass curtain wall 02 on the side away from each other. Aluminum veneer panels 03 are installed on the side of each aluminum alloy column 01 close to the interior. The two aluminum veneers 03 are staggered and arranged to allow room for movement to accommodate changes in the spacing of the expansion joint. A rubber strip 04 is installed between the two aluminum alloy columns 01, with the side close to the outside being installed. Aluminum veneer 03 is also installed on the side close to the outside and is located outside of rubber strip 04. Insulating rock wool 05 is installed between rubber strip 04 and aluminum veneer 03 close to the interior. When the glass curtain wall 02 expands or contracts, the rubber strip 04 expands and contracts, and the aluminum veneer panels 03 move closer or further away from each other, thereby accommodating the deformation of the glass curtain wall 02.

[0004] Due to the low structural strength of the expansion joint system between the curtain walls, the distance between the two columns can only be set smaller, resulting in the maximum displacement of the expansion joint system not meeting the requirements of the expansion joint displacement of the main body of the building; at the same time, the distance between the two columns is relatively close, which undermines the integrity and aesthetics of the building's facade. Utility Model Content

[0005] In view of this, the utility model provides a connection device for curtain wall expansion joints to solve the problem that the maximum displacement of the expansion joint system between existing curtain walls does not meet the requirements of the expansion joint displacement of the building main body and destroys the integrity and aesthetics of the building facade.

[0006] The utility model provides a connection device for curtain wall deformation joints, which is used to connect two curtain walls set at intervals, comprising:

[0007] Two fixing components are respectively fixedly connected to the sides of the two curtain walls that are close to each other;

[0008] A first movable component is provided between the two fixed components and is elastically connected to the two fixed components, and is used to form a telescopic structure between the first movable component and the second movable component when the two curtain walls drive the two fixed components to move away from or approach each other;

[0009] Wherein, the distance between the two curtain walls is equal to the extension width of one curtain wall.

[0010] Beneficial effects: By arranging a connecting device between two curtain walls set at intervals, the deformation joints reserved between the curtain walls can be shielded; by arranging a fixed component, the structural strength of the side where the curtain wall is connected to the connecting device can be strengthened, and support can be provided for the connection of the first movable component; by elastically connecting the first movable component with the fixed component, the curtain wall can still be connected to the fixed component when the fixed component is driven to extend or retract; by setting the distance between the two curtain walls to be equal to the extended width of one curtain wall, the spacing between the two fixed components can be set larger, and thus the maximum displacement between the curtain walls can meet the requirements of the width of the deformation joint of the main body of the building, and can meet the requirements of the integrity and aesthetics of the building's facade.

[0011] In an optional embodiment, the fixed component is provided with a first connecting portion, and the first movable component is provided with a second connecting portion;

[0012] The connecting device comprises:

[0013] An elastic member, one end of which is fixedly connected to the first connecting portion and the other end of which is fixedly connected to the second connecting portion, is used to form an elastic connection between the fixed component and the first movable component.

[0014] Beneficial effect: By elastically connecting the fixed component and the first movable component through an elastic member, a larger displacement distance can be provided for the curtain wall and the fixed component, so that when the curtain wall drives the fixed component to displace, a relative displacement is formed with the first movable component. When the curtain wall returns to its original state, the fixed component also returns to its initial position, so that the connecting device can adapt to different displacement changes of the curtain wall.

[0015] In an optional embodiment, the connecting device includes:

[0016] The first limiting component has one end fixedly connected to the fixed component and the other end connected to the first movable component, and is used to limit the displacement of the first movable component.

[0017] Beneficial effect: By setting the first limit component, the displacement distance of the first movable component can be limited to prevent the displacement distance of the first movable component from being too large.

[0018] In an optional embodiment, the first movable component is provided with a first sliding groove;

[0019] The first limiting component includes:

[0020] The first limiting member has one end fixedly connected to the fixed component and the other end extending into the first sliding groove and sliding in the first sliding groove, and is used to limit the displacement direction of the first movable component.

[0021] Beneficial effect: By fixing one end of the limiter to the fixed component and the other end sliding in the first slide groove, the displacement direction of the first movable component can be limited, preventing the first movable component from tilting during displacement and cracking between the curtain wall.

[0022] In an optional embodiment, the first limiting component includes:

[0023] The first connecting member has one end fixedly connected to the fixed component and the other end fixedly connected to the first movable component, and is used to limit the displacement of the first movable component.

[0024] Beneficial effect: By providing the first connecting member, the moving speed of the limiting member can be slowed down, preventing the limiting member from moving too fast and causing jamming in the first sliding groove.

[0025] In an optional embodiment, both ends of the first movable component are provided with a yielding portion;

[0026] The fixing assembly includes:

[0027] A column fixedly connected to the curtain wall;

[0028] The fixing mechanism is fixedly connected to the side of the columns close to each other and is arranged in cooperation with the giving way portion.

[0029] Beneficial effect: By arranging a fixing mechanism on one side of the column, the structural strength of the fixing component can be improved, and support can be provided for the installation of the first movable component, and the two ends of the first movable component can be shielded.

[0030] In an optional embodiment, the connecting device includes:

[0031] The second movable component is arranged between the two fixed components and on the outside of the first movable component. It is rotatably connected to the two fixed components and is used to form a retractable structure between the fixed components when the two curtain walls drive the two fixed components to move away from or approach each other.

[0032] Beneficial effect: By setting up the second movable component, the first movable component can be shielded, so that the connecting device and the curtain wall are on the same facade, the integrity is better, and it can be waterproof.

[0033] In an optional embodiment, the connecting device includes:

[0034] The rotating member has one end fixedly connected to the fixed component and the other end slidably connected to the second movable component.

[0035] Beneficial effect: By setting a rotating part, when the two curtain walls approach the middle, only two extremely narrow gaps exist between the second movable component and the fixed component after it moves outward, and the gaps coincide with the edges of the side of the curtain wall and are not easy to observe, which can improve the integrity and aesthetics of the curtain wall structure.

[0036] In an optional embodiment, a second sliding groove is provided on the second movable component;

[0037] One end of the rotating member is fixedly connected to the fixed assembly, and the other end extends into the second sliding groove and slides in the second sliding groove to adjust the position of the second movable assembly.

[0038] In an optional embodiment, the connecting device includes:

[0039] The second limiting component has one end fixedly connected to the fixed component and the other end fixedly connected to the second movable component, and is used to limit the displacement of the second movable component.

[0040] Beneficial effect: By setting the second limiting component, the rotation angle of the rotating member can be limited, thereby limiting the displacement of the second movable component, preventing the displacement distance of the second movable component from being too large, thereby affecting the aesthetics of the curtain wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 This is a structural diagram of a glass curtain wall and top aluminum plate expansion joint system in the prior art;

[0043] Figure 2 This is a structural schematic diagram of a connection device for a curtain wall expansion joint according to an embodiment of the present utility model;

[0044] Figure 3 for Figure 2 A schematic structural diagram of the fixing assembly and the first limiting assembly of the connecting device shown;

[0045] Figure 4for Figure 2 A schematic structural diagram of the first movable component of the connecting device shown;

[0046] Figure 5 for Figure 2 A schematic structural diagram of the elastic member of the connecting device shown;

[0047] Figure 6 for Figure 2 A schematic structural diagram of the second movable component of the connecting device shown;

[0048] Figure 7 for Figure 2 A schematic structural diagram of the rotating member and the second limiting assembly of the connecting device shown;

[0049] Figure 8 for Figure 2 The schematic structural diagram of the connecting device shown is in the initial state;

[0050] Figure 9 for Figure 2 A schematic structural diagram of the connecting device shown in the expanded state;

[0051] Figure 10 for Figure 2 The schematic diagram of the structure of the connecting device shown is in the contracted state.

[0052] Description of reference numerals:

[0053] 01. Aluminum alloy column; 02. Glass curtain wall; 03. Aluminum veneer; 04. Rubber strip; 05. Thermal insulation rock wool;

[0054] 1. Curtain wall; 11. Glass panel; 12. Beam; 2. Fixing assembly; 21. First connecting part; 22. Upright column; 23. Fixing mechanism; 231. First keel; 232. Second keel; 24. Reinforcement member; 25. Waterproof panel; 26. Baffle; 3. First movable assembly; 31. Second connecting part; 32. First slide; 33. Giving way; 34. First vertical frame; 35. First horizontal frame; 36. First panel; 4. Elastic member; 5. First limiting assembly; 51. Limiting member; 52. First connecting part; 6. Second movable assembly; 61. Second slide; 62. Second vertical frame; 63. Second horizontal frame; 64. Back panel; 65. Second panel; 7. Rotating member; 8. Second limiting assembly; 81. Second connecting part; 82. Fixing member. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0056] The following combination Figures 2 to 10 , describing the embodiments of the present utility model.

[0057] According to an embodiment of the present utility model, a connection device for a curtain wall expansion joint is provided, which is used to connect two curtain walls 1 set at an interval, including: two fixed components 2, which are respectively fixedly connected to the sides of the two curtain walls 1 that are close to each other; a first movable component 3, which is arranged between the two fixed components 2 and is elastically connected to both fixed components 2, and is used to form a retractable structure between the fixed components 2 when the two curtain walls 1 drive the two fixed components 2 to move away from or approach each other; wherein the distance between the two curtain walls 1 is equal to the extended width of one curtain wall 1.

[0058] By arranging a connecting device between two curtain walls 1 set at intervals, the deformation joints reserved between the curtain walls 1 can be shielded; by arranging a fixing component 2, the structural strength of the side where the curtain wall 1 is connected to the connecting device can be strengthened, and support can be provided for the connection of the first movable component 3; by elastically connecting the first movable component 3 with the fixing component 2, when the curtain wall 1 drives the fixing component 2 to extend or retract, the first movable component 3 can still be connected to the fixing component 2; by setting the distance between the two curtain walls 1 to be equal to the extended width of one curtain wall 1, the spacing between the two fixing components 2 can be set larger, and thus the maximum displacement between the curtain walls 1 can meet the requirements of the width of the deformation joint of the main body of the building, and can meet the requirements of the integrity and aesthetics of the building's facade.

[0059] In this embodiment, the inner side Figure 2 The upper side of the middle, the outer side Figure 2 Below.

[0060] like Figure 2-Figure 3 As shown, the curtain wall 1 includes a plurality of glass panels 11 and a crossbeam 12. The glass panels 11 are fixed to the outside of the crossbeam 12 and arranged side by side along the extended length of the crossbeam 12. In this embodiment, the extended width of a curtain wall 1 refers to the dimension of each glass panel 11 along the extended length of the crossbeam 12.

[0061] like Figure 3-Figure 4As shown, both ends of the first movable assembly 3 are provided with a clearance portion 33; the fixed assembly 2 includes: a column 22, fixedly connected to the curtain wall 1; a fixing mechanism 23, fixedly connected to the adjacent side of the column 22, and configured in conjunction with the clearance portion 33. By providing the fixing mechanism 23 on one side of the column 22, the structural strength of the fixed assembly 2 is improved, and support is provided for the installation of the first movable assembly 3, as well as shielding the two ends of the first movable assembly 3. As an alternative embodiment, when the structural strength of the column 22 is relatively high, the fixing mechanism 23 can be omitted, and the first movable assembly 3 can be directly connected to the column 22.

[0062] The column 22 has a hollow cavity, within which a reinforcement 24 is fixedly connected to enhance the structural strength of the column 22. The curtain wall 1 is fixedly connected to one side of the column 22. The fixing mechanism 23 is fixedly connected to the other side of the column 22 and positioned closer to the outside. The fixing mechanism 23 includes a first keel 231 and a second keel 232. Both the first keel 231 and the second keel 232 are channel steels. One of the wing panels of the first keel 231 is fixedly connected to the column 22, and the web of the second keel 232 is fixedly connected to the other wing panel of the first keel 231. A waterproof panel 25 is fixedly connected to the outside of the first and second keels 231, 232. As an alternative embodiment, the column 22 may be a solid structure without the reinforcement 24. As an alternative embodiment, the fixing mechanism 23 may also directly adopt a square column structure.

[0063] A baffle 26 is fixedly connected to the other side of the column 22 and positioned near the inner side. Its cross-section is L-shaped and made of 2.5mm thick aluminum. The first movable assembly 3 has a T-shaped cross-section. A protrusion is positioned within the space enclosed by the fixing mechanism 23 and the baffle 26 to shield the two ends of the first movable assembly 3. The relief portion 33 cooperates with the fixing mechanism 23. As an alternative embodiment, the baffle 26 can also be omitted.

[0064] like Figure 4 As shown, the first movable component 3 is formed by wrapping a first panel 36 on the outside of a first frame formed by a fixed connection between a first vertical frame 34 and a first horizontal frame 35, and a thermal insulation and sound insulation material is provided in the space enclosed by the first panel 36. The first panel 36 is made of an aluminum plate with a thickness of 2.5 mm, and the thermal insulation and sound insulation material is thermal insulation rock wool. By forming the first movable component 3 by wrapping the first panel 36 on the outside of the first frame, the structural strength of the first movable component 3 can be improved, and thus it can withstand greater wind loads and upper loads, so that the spacing between the columns 22 can be set larger. As a convertible embodiment, the first movable component 3 can also directly adopt a flat plate structure.

[0065] like Figure 2-Figure 5As shown, the fixed component 2 is provided with a first connecting portion 21, and the first movable component 3 is provided with a second connecting portion 31; the connecting device includes: an elastic member 4, one end of which is fixedly connected to the first connecting portion 21, and the other end of which is fixedly connected to the second connecting portion 31, for forming an elastic connection between the fixed component 2 and the first movable component 3. Among them, the elastic member 4 is an elastic waterstop, and the elastic waterstop is sealed between the first connecting portion 21 and the second connecting portion 31 to isolate the inside and the outside, thereby being used for waterproofing. By elastically connecting the fixed component 2 and the first movable component 3 through the elastic member 4, a larger displacement distance can be provided for the curtain wall 1 and the fixed component 2, so that when the curtain wall 1 drives the fixed component 2 to displace, it forms a relative displacement with the first movable component 3. When the curtain wall 1 returns to its original state, the fixed component 2 also returns to its initial position, so that the connecting device can adapt to different displacement changes of the curtain wall 1.

[0066] The connection device in this embodiment includes a first limiting assembly 5, one end of which is fixedly connected to the fixed assembly 2 and the other end of which is connected to the first movable assembly 3, for limiting the displacement of the first movable assembly 3. By providing the first limiting assembly 5, the displacement distance of the first movable assembly 3 can be limited, preventing the first movable assembly 3 from moving too far.

[0067] like Figure 2-Figure 4 As shown, the first movable component 3 is provided with a first slide groove 32; the first limiting component 5 includes: a limiting member 51, one end of which is fixedly connected to the fixed component 2, and the other end extends into the first slide groove 32 and slides in the first slide groove 32, which is used to limit the displacement direction of the first movable component 3. The limiting member 51 is a first bolt, the threaded section of the first bolt is threadedly connected to the second keel 232, and the head extends into the first slide groove 32. By fixing one end of the limiting member 51 to the fixed component 2 and the other end sliding in the first slide groove 32, the displacement direction of the first movable component 3 can be limited, preventing the first movable component 3 from tilting during displacement and cracking between the curtain wall 1. As a convertible embodiment, it is also possible that a slider is provided at the end of the fixed component 2, and a guide rail is provided on the first movable component 3, and the slider slides in the guide rail to limit the displacement direction of the first movable component 3.

[0068] like Figure 2As shown, the first limiting assembly 5 in this embodiment includes a first connecting member 52, one end of which is fixedly connected to the fixed assembly 2 and the other end of which is fixedly connected to the first movable assembly 3, for limiting the displacement of the first movable assembly 3. The first connecting member 52 is a first spring, one end of which is clamped between the first bolt and the second keel 232, and the other end is fixed to the first movable assembly 3 via a second bolt. The provision of the first connecting member 52 can slow the movement of the limiting member 51, preventing the limiting member 51 from moving too quickly and causing a jam in the first chute 32. As an alternative embodiment, the first connecting member 52 can also be omitted.

[0069] like Figure 6 As shown, the connecting device in this embodiment includes: a second movable component 6, which is arranged between the two fixed components 2 and on the outside of the first movable component 3, and is rotatably connected to the two fixed components 2, and is used to form a retractable structure between the fixed components 2 when the two curtain walls 1 drive the two fixed components 2 to move away from or approach each other. Among them, the second movable component 6 is formed by wrapping a back plate 64 and a second panel 65 on the outside of the second frame formed by connecting the second vertical frame 62 and the second horizontal frame 63. The back plate 64 is made of aluminum plate with a thickness of 2mm, and the second panel 65 is made of the same material as the glass panel 11. By setting the back plate 64, the first movable component 3 can be shielded when observed from the outside; by setting the second movable component 6, the first movable component 3 can be shielded, so that the connecting device and the curtain wall 1 are on the same facade, with better integrity and waterproof. As a convertible embodiment, the second movable component 6 can also be omitted.

[0070] like Figure 7 As shown, the connection device in this embodiment includes: a rotating member 7, one end of which is fixedly connected to the fixed component 2, and the other end of which is slidably connected to the second movable component 6. Specifically, a second slide groove 61 is provided on the second movable component 6; one end of the rotating member 7 is fixedly connected to the fixed component 2, and the other end extends into the second slide groove 61 and slides in the second slide groove 61 to adjust the position of the second movable component 6. Among them, the rotating member 7 is a double-axis hinge, one end of which is fixedly connected to the web of the first keel 231 by a third bolt, and the other end slides in the second slide groove 61 by a fourth bolt. By providing the rotating member 7, when the two curtain walls 1 approach the middle, there are only two extremely narrow gaps between the second movable component 6 and the fixed component 2 after it moves outward, and the gaps coincide with the edges of the side of the curtain wall 1, which are not easy to observe, and can improve the integrity and aesthetics of the curtain wall structure.

[0071] Specifically, if Figures 8-10As shown, when the two curtain walls 1 drive the two fixed assemblies 2 away from each other, the other end of the biaxial hinge slides in the second slide groove 61 via the fourth bolt to accommodate the expansion of the curtain wall 1; when the two curtain walls 1 drive the two fixed assemblies 2 towards each other, the biaxial hinge rotates, and at the same time, the other end slides in the second slide groove 61 via the fourth bolt, thereby driving the second movable assembly 6 to move outward to accommodate the contraction of the curtain wall 1.

[0072] like Figure 2 As shown, the connection device in this embodiment includes a second limiting assembly 8, one end of which is fixedly connected to the fixed assembly 2 and the other end of which is fixedly connected to the second movable assembly 6, for limiting the displacement of the second movable assembly 6. The second limiting assembly 8 includes a second connecting member 81 and a fixing member 82. The second connecting member 81 is a second spring, and the fixing member 82 is a fifth bolt. One end of the second spring is fixed between the biaxial hinge and the fourth bolt, and the other end is fixed to the second keel 232 via the fifth bolt. By providing the second limiting assembly 8, the rotation angle of the rotating member 7 can be limited, thereby limiting the displacement of the second movable assembly 6, preventing the second movable assembly 6 from moving too far and affecting the aesthetics of the curtain wall 1.

[0073] The various components in this embodiment have a high degree of modularity and can be uniformly produced and assembled in the factory, thereby reducing on-site workload; through factory production, the processing dimensions of the components can be effectively controlled, thereby improving processing accuracy and improving the product quality of the connecting device.

[0074] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A connection device for curtain wall expansion joints, used for connecting two curtain walls (1) spaced apart, characterized in that: include: Two fixing components (2) are respectively fixedly connected to the sides of the two curtain walls (1) that are close to each other; A first movable component (3) is provided between the two fixed components (2) and is elastically connected to the two fixed components (2), and is used to form a telescopic structure between the first movable component and the fixed components (2) when the two curtain walls (1) drive the two fixed components (2) to move away from or toward each other; Wherein, the distance between the two curtain walls (1) is equal to the extension width of one curtain wall (1).

2. The connection device for curtain wall expansion joints according to claim 1, characterized in that: The fixed component (2) is provided with a first connecting portion (21), and the first movable component (3) is provided with a second connecting portion (31); The connecting device comprises: An elastic member (4) has one end fixedly connected to the first connecting portion (21) and the other end fixedly connected to the second connecting portion (31), and is used to form an elastic connection between the fixed component (2) and the first movable component (3).

3. The connection device for curtain wall expansion joints according to claim 2, characterized in that: The connecting device comprises: A first limiting component (5) has one end fixedly connected to the fixed component (2) and the other end connected to the first movable component (3), and is used to limit the displacement of the first movable component (3).

4. The connection device for curtain wall expansion joints according to claim 3, characterized in that: The first movable component (3) is provided with a first sliding groove (32); The first limiting component (5) comprises: A limiting member (51) has one end fixedly connected to the fixed assembly (2) and the other end extending into the first sliding groove (32) and sliding in the first sliding groove (32) for limiting the displacement direction of the first movable assembly (3).

5. The connection device for curtain wall expansion joints according to claim 4, characterized in that: The first limiting component (5) comprises: A first connecting member (52) has one end fixedly connected to the fixed assembly (2) and the other end fixedly connected to the first movable assembly (3), and is used to limit the displacement of the first movable assembly (3).

6. The connection device for curtain wall expansion joints according to any one of claims 1 to 5, characterized in that: Both ends of the first movable component (3) are provided with a yielding portion (33); The fixing assembly (2) comprises: A column (22) fixedly connected to the curtain wall (1); The fixing mechanism (23) is fixedly connected to the side of the columns (22) that are close to each other, and is arranged in cooperation with the giving way portion (33).

7. The connection device for curtain wall expansion joints according to any one of claims 1 to 5, characterized in that: The connecting device comprises: The second movable component (6) is arranged between the two fixed components (2) and outside the first movable component (3), and is rotatably connected to the two fixed components (2). When the two curtain walls (1) drive the two fixed components (2) to move away from or towards each other, a telescopic structure is formed between the second movable component and the fixed components (2).

8. The connection device for curtain wall expansion joints according to claim 7, characterized in that: The connecting device comprises: The rotating member (7) has one end fixedly connected to the fixed component (2) and the other end slidably connected to the second movable component (6).

9. The connection device for curtain wall expansion joints according to claim 8, characterized in that: The second movable component (6) is provided with a second sliding groove (61); One end of the rotating member (7) is fixedly connected to the fixed assembly (2), and the other end extends into the second sliding groove (61) and slides in the second sliding groove (61) to adjust the position of the second movable assembly (6).

10. The connection device for curtain wall expansion joints according to claim 9, characterized in that: The connecting device comprises: A second limiting component (8) has one end fixedly connected to the fixed component (2) and the other end fixedly connected to the second movable component (6), and is used to limit the displacement of the second movable component (6).

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