A retractable joint device for energy-saving glass curtain wall

Abstract

The application provides a telescopic joint device for energy-saving glass of curtain wall, and relates to the technical field of building, which comprises an outer frame structure, a horizontal clamping groove seat, a buffer device one, a corner telescopic joint mechanism, a vertical clamping groove seat and a buffer device two. The application has the characteristics of reasonable and simple structure, low production cost, convenient installation and complete functions. The outer frame structure is stably connected through a specific connecting structure, can provide stable support for the whole device, and guarantees the reliability of the device base frame. The elastic effect of the buffer device can effectively buffer the force generated when the curtain wall expands and contracts, and the limiting structure can guarantee the stability of the buffering process, improving the buffering effect and service life of the device. The telescopic joint mechanism arranged at the corner position can adapt to the complex expansion and deformation at the corner through the synergistic effect of the buffer connecting mechanism and the connecting device, avoid stress concentration, and ensure the safety of the corner position.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building technology, in particular to a telescopic joint device for energy-saving glass curtain wall. BACKGROUND

[0002] In the field of modern architecture, curtain wall is widely used in various high-rise buildings as a beautiful, lightweight and good lighting building envelope structure. Among them, energy-saving glass curtain wall has excellent heat preservation and insulation performance, which can effectively reduce building energy consumption, and has become an important trend of curtain wall development.

[0003] However, the energy-saving glass curtain wall will inevitably produce telescopic deformation due to the influence of temperature change, wind pressure, earthquake and other external factors in actual use. If the telescopic deformation cannot be reasonably released, it will easily lead to glass breakage, curtain wall structure damage and other problems, which not only affects the appearance and use function of the building, but also may cause safety hazards.

[0004] To solve the above problems, some telescopic joint devices for curtain wall glass have appeared in the prior art, but these devices often have many defects. For example, the outer frame structure of some devices is not stable enough, and is prone to looseness and deformation during long-term use or under the action of a large external force, which cannot provide reliable support for the entire device; the buffering effect of some buffer devices is not good, and it is difficult to effectively absorb the force generated by the telescopic deformation of the glass and the curtain wall structure, resulting in a shortened service life of the device; at the corner position, the connection and buffering performance of the existing telescopic joint mechanism are insufficient, and it is difficult to adapt to the complex telescopic deformation at the corner, which is prone to stress concentration and further causes damage to the corner position.

[0005] In addition, the coordination between the components of the existing device is poor, and problems such as jamming and excessive friction are prone to occur during telescopic process, which affects the normal work of the device and cannot fully guarantee the safety and energy-saving performance of the energy-saving glass curtain wall. Therefore, it is an urgent problem in the current building field to develop a telescopic joint device for energy-saving glass curtain wall with reasonable structure, stable connection, good buffering effect and the ability to adapt to complex telescopic deformation. SUMMARY

[0006] The purpose of the present application is to provide a telescopic joint device for energy-saving glass curtain wall to solve the problems of unstable connection of the outer frame structure of the existing device, poor buffering effect, insufficient performance of the telescopic joint mechanism at the corner position, and poor coordination between components.

[0007] In order to solve the above problems, the application provides a technical scheme: a telescopic joint device for curtain wall energy-saving glass, comprising an outer frame structure, a horizontal clamping groove seat, a buffer device one, a corner telescopic joint mechanism, a vertical clamping groove seat and a buffer device two; the buffer device one is a plurality of, and the plurality of buffer device ones are respectively fixedly connected to the inner sides of the upper and lower sides of the outer frame structure; the horizontal clamping groove seat is two, and the two horizontal clamping groove seats are respectively located on the inner sides of the upper and lower sides of the outer frame structure, and the two horizontal clamping groove seats are respectively fixedly connected with the corresponding buffer device one; the buffer device two is a plurality of, and the plurality of buffer device two are respectively fixedly connected to the inner sides of the left and right sides of the outer frame structure; the vertical clamping groove seat is two, and the two vertical clamping groove seats are respectively located on the inner sides of the left and right sides of the outer frame structure, and the two vertical clamping groove seats are respectively fixedly connected with the corresponding buffer device two; the corner telescopic joint mechanism is four, and the four corner telescopic joint mechanisms are respectively arranged at the four corner positions of the inner side of the outer frame structure, and the two sides of the four corner telescopic joint mechanisms are respectively connected with the end portions of the corresponding horizontal clamping groove seat and vertical clamping groove seat.

[0008] As preferred, the outer frame structure comprises a horizontal profile, a connecting structure and a vertical profile; the horizontal profile and the vertical profile are both two, and the horizontal profile and the vertical profile are fixedly connected with each other through the connecting structure. As preferred, the connecting structure comprises a connecting block one, a connecting groove one, a fixed screw, a connecting block two, a connecting groove two and a connecting clamping block; the connecting block one and the connecting block two are respectively fixedly connected on the connecting portions of the corresponding horizontal profile and vertical profile, and the outer sides of the connecting block one and the connecting block two are respectively provided with the connecting groove one and the connecting groove two; the one side of the connecting clamping block is fixedly connected in the connecting groove one through a plurality of fixed screws, and the other side of the connecting clamping block is fixedly connected in the connecting groove two through a plurality of fixed screws.

[0009] As preferred, the buffer device two is consistent with the buffer device one in structure, and the buffer device one comprises an outer shell one, an inner cavity one, a spring one, a movable block one and a limiting convex groove one; the inner cavity one is arranged in the outer shell one; the movable block one is movably connected on the outer side of the upper side of the inner cavity one, and the spring one is arranged between the inner side of the upper side of the movable block one and the upper side of the inner cavity one, and the limiting convex groove one is arranged on both sides of the upper side of the movable block one.

[0010] As preferred, the corner telescopic joint mechanism comprises a buffer connecting mechanism one, a corner clamping groove seat, a buffer connecting mechanism two and a connecting device; the buffer connecting mechanism one is fixedly connected on both sides of the inner side of the horizontal clamping groove seat; the buffer connecting mechanism two is fixedly connected on both sides of the inner side of the vertical clamping groove seat; the corner clamping groove seat is movably connected at the corner position of the inner side of the outer frame structure, and the outer side of the corner clamping groove seat is connected with the buffer connecting mechanism one and the buffer connecting mechanism two, and the both ends of the corner clamping groove seat are connected with the ends of the horizontal clamping groove seat and the vertical clamping groove seat through the connecting device.

[0011] Preferably, the second buffer connection mechanism has the same structure as the first buffer connection mechanism. The first buffer connection mechanism includes a second outer shell, a second inner cavity, a second spring, a second movable block, a second limiting protrusion, a slider, and a guide groove. The second outer shell has a second inner cavity inside. The upper side of the second movable block is movably connected to the inside of the second inner cavity. The second spring is provided between the upper side of the second movable block and the upper side of the second inner cavity. The upper side of the second movable block has two limiting protrusions on both sides. The slider is fixedly connected to the bottom of the second movable block. The second movable block is movably connected to the inside of the guide groove, and the guide groove is opened on the outer surface of the corner slot seat.

[0012] Preferably, the guide groove is a T-shaped guide groove and matches the outside of the slider.

[0013] Preferably, the connecting device includes a connecting housing, a connecting cavity, a slide block, a guide block, a connecting groove, and a sliding channel; the connecting housing is fixedly connected to the end of the corner slot seat, and the connecting housing has a connecting cavity inside; one side of the slide block is externally movably connected to the inside of the connecting cavity, and the other side of the slide block is fixedly connected to the guide block; the connecting groove is fixedly connected to the end of the transverse slot seat, and the left side of the connecting groove has a sliding channel, and the inside of the sliding channel is movably connected to the outside of the guide block.

[0014] Preferably, the groove is a T-shaped groove and matches the outside of the guide block.

[0015] The beneficial effects of the present invention are: (1) The present invention has the characteristics of reasonable and simple structure, low production cost, convenient installation and complete functions. The outer frame structure achieves a stable connection through a specific connection structure, which can provide stable support for the entire device and ensure the reliability of the device's basic frame.

[0016] (2) The present invention can effectively buffer the force generated during the expansion and contraction of the curtain wall through the elastic effect of the buffer device, and the limiting structure can ensure the stability of the buffering process, thereby improving the buffering effect and service life of the device.

[0017] (3) The expansion joint mechanism set at the corner position of the present invention can adapt to the complex expansion and contraction deformation at the corner through the synergistic effect of the buffer connection mechanism and the connection device, avoid stress concentration, and ensure the safety of the corner position.

[0018] (4) The components of this invention have good coordination and move stably during the expansion and contraction process without jamming or excessive friction. It can further adapt to the expansion and contraction deformation of the curtain wall, ensuring that the entire device works stably under various working conditions and guaranteeing the safety and energy-saving performance of the energy-saving glass of the curtain wall. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 for Figure 1 A sectional view.

[0021] Figure 3 This is a structural diagram of the outer frame structure.

[0022] Figure 4 This is a schematic diagram of the connection structure.

[0023] Figure 5 This is a schematic diagram of the buffer device.

[0024] Figure 6 This is a schematic diagram of the corner expansion joint mechanism.

[0025] Figure 7 This is a schematic diagram of the buffer connection mechanism.

[0026] Figure 8 This is a schematic diagram of the connecting device.

[0027] Figure 9 for Figure 8 Top view.

[0028] 1-Outer frame structure; 2-Horizontal slot seat; 3-Buffer device one; 4-Corner expansion joint mechanism; 5-Vertical slot seat; 6-Buffer device two; 11-Horizontal profile; 12-Connecting structure; 13-Vertical profile; 31-Outer shell one; 32-Inner cavity one; 33-Spring one; 34-Moving block one; 35-Limiting protrusion one; 41-Buffer connecting mechanism one; 42-Corner slot seat; 43-Buffer connecting mechanism two; 44-Connecting device; 411-Outer shell two; 412-Inner cavity two; 413-Spring two; 414-Moving block two; 415-Limiting protrusion two; 416-Slider; 417-Guide groove; 441-Connecting shell; 442-Connecting cavity; 443-Slide seat; 444-Guide block; 445-Connecting groove seat; 446-Slide groove. Detailed Implementation

[0029] like Figure 1 and Figure 2As shown, this specific embodiment adopts the following technical solution: an expansion joint device for energy-saving glass in curtain walls, including an outer frame structure 1, a horizontal slot seat 2, a buffer device 1 3, a corner expansion joint mechanism 4, a vertical slot seat 5, and a buffer device 2 6; there are several buffer devices 1 3, which are respectively fixedly connected to the interior of the upper and lower sides of the outer frame structure 1; there are two horizontal slot seats 2, which are respectively located inside the upper and lower sides of the outer frame structure 1, and are respectively fixedly connected to the corresponding buffer device 1 3; There are several buffer devices 2 6, which are fixedly connected to the inside of the left and right sides of the outer frame structure 1 respectively; there are two vertical slot seats 5, which are located on the inside of the left and right sides of the outer frame structure 1 respectively, and are fixedly connected to the corresponding buffer devices 2 6 respectively; there are four corner expansion joint mechanisms 4, which are respectively located at the four corners of the inner side of the outer frame structure 1, and are connected to the ends of the corresponding horizontal slot seats 2 and vertical slot seats 5 respectively.

[0030] like Figure 3 As shown, the outer frame structure 1 includes a horizontal profile 11, a connecting structure 12, and a vertical profile 13; there are two horizontal profiles 11 and two vertical profiles 13, and the horizontal profiles 11 and the vertical profiles 13 are fixedly connected to each other through the connecting structure 12.

[0031] like Figure 4 As shown, the connection structure 12 includes a first connecting block 121, a first connecting groove 122, a fixing screw 123, a second connecting block 124, a second connecting groove 125, and a connecting clip 126. The first connecting block 121 and the second connecting block 124 are respectively fixedly connected to the outside of the connection between the corresponding horizontal profile 11 and the vertical profile 13. The first connecting groove 122 and the second connecting groove 125 are respectively opened in the center of the outer side of the first connecting block 121 and the second connecting block 124. One side of the connecting clip 126 is fixedly connected to the inside of the first connecting groove 122 by several fixing screws 123, and the other side of the connecting clip 126 is fixedly connected to the inside of the second connecting groove 125 by several fixing screws 123.

[0032] like Figure 5 As shown, the structure of the second buffer device 6 is the same as that of the first buffer device 3. The first buffer device 3 includes an outer shell 31, an inner cavity 32, a spring 33, a movable block 34, and a limiting groove 35. The inner cavity 32 is provided inside the outer shell 31. The upper side of the movable block 34 is movably connected to the inside of the inner cavity 32. The spring 33 is provided between the upper side of the movable block 34 and the upper side of the inner cavity 32. The limiting grooves 35 are provided on both sides of the upper side of the movable block 34.

[0033] like Figure 6 As shown, the corner expansion joint mechanism 4 includes a buffer connection mechanism 1 41, a corner slot seat 42, a buffer connection mechanism 2 43, and a connecting device 44; the buffer connection mechanism 1 41 is fixedly connected to both sides of the inner side of the horizontal slot seat 2; the buffer connection mechanism 2 43 is fixedly connected to both sides of the inner side of the vertical slot seat 5; the corner slot seat 42 is movably connected to the inner corner of the outer frame structure 1, and the outer side of the corner slot seat 42 is connected to the buffer connection mechanism 1 41 and the buffer connection mechanism 2 43 respectively. Both ends of the corner slot seat 42 are connected to the ends of the horizontal slot seat 2 and the vertical slot seat 5 through the connecting device 44.

[0034] like Figure 7 As shown, the second buffer connection mechanism 43 has the same structure as the first buffer connection mechanism 41. The first buffer connection mechanism 41 includes a second outer shell 411, a second inner cavity 412, a second spring 413, a second movable block 414, a second limiting protrusion 415, a slider 416, and a guide groove 417. The second outer shell 411 has a second inner cavity 412 inside. The upper side of the second movable block 414 is movably connected to the inside of the second inner cavity 412. A second spring 413 is provided between the upper side of the second movable block 414 and the upper side of the second inner cavity 412. The upper side of the second movable block 414 has two limiting protrusions 415 on both sides. The slider 416 is fixedly connected to the bottom of the second movable block 414. The second movable block 414 is movably connected to the inside of the guide groove 417, and the guide groove 417 is opened on the outer side of the corner slot seat 42.

[0035] The guide groove 417 is a T-shaped guide groove and matches the outside of the slider 416.

[0036] like Figure 8 and Figure 9 As shown, the connecting device 44 includes a connecting housing 441, a connecting cavity 442, a slide 443, a guide block 444, a connecting groove seat 445, and a sliding groove 446. The connecting housing 441 is fixedly connected to the end of the corner slot seat 42, and the connecting housing 441 has a connecting cavity 442 inside. One side of the slide 443 is externally movably connected to the inside of the connecting cavity 442, and the other side of the slide 443 is fixedly connected to the guide block 444. The connecting groove seat 445 is fixedly connected to the end of the transverse slot seat 2, and the left side of the connecting groove seat 445 has a sliding groove 446, and the inside of the sliding groove 446 is movably connected to the outside of the guide block 444.

[0037] The slide 446 is a T-shaped slide and matches the outside of the guide block 444.

[0038] The invention is used in the following ways: It has a reasonable and simple structure, low production cost, convenient installation, and complete functions. During the installation and use of energy-saving glass for curtain walls, the outer frame structure 1 serves as the basic framework of the entire device. Its horizontal profiles 11 and vertical profiles 13 are securely connected by a connecting structure 12. In the connecting structure 12, connecting block one 121 and connecting block two 124 are respectively fixed to the outside of the connection point between the horizontal profile 11 and the vertical profile 13. Connecting clip 126 is simultaneously fixed inside connecting groove one 122 and connecting groove two 125 by fixing screws 123, ensuring a firm connection between the horizontal profile 11 and the vertical profile 13, providing stable support for the entire device. When the curtain wall expands or contracts vertically due to temperature changes, the horizontal locking seat 2 will be subjected to a corresponding force. At this time, the buffer device 3, which is fixedly connected to the horizontal locking seat 2, begins to function. The movable block 34 of the buffer device 3 moves within the inner cavity 32 of the outer shell 31, and the spring 33 is compressed or stretched, using its elasticity to buffer the force on the horizontal locking seat 2. At the same time, the limiting groove 35 prevents the movable block 34 from disengaging from the inner cavity 32, ensuring the stability of the buffering process. Similarly, when the curtain wall expands or contracts horizontally, the vertical locking seat 5 drives the buffer device 6 to work. Its working principle is the same as that of the buffer device 3, using the elasticity of the spring to buffer the vertical expansion or contraction. At the corner of the curtain wall, the corner expansion joint mechanism 4 plays a crucial connecting and buffering role. The buffer connection mechanism 41 on both sides of the inner side of the horizontal slot seat 2 and the buffer connection mechanism 43 on both sides of the inner side of the vertical slot seat 5 are connected to the corner slot seat 42. When horizontal and vertical expansion and contraction deformation occurs at the corner, the movable block 414 in the buffer connection mechanism 41 and the buffer connection mechanism 43 moves in the inner cavity 412 of the outer shell 411. The spring 413 expands and contracts accordingly to buffer the force. The limiting protrusion 415 prevents the movable block 414 from falling out. At the same time, the slider 416 at the bottom of the movable block 414 is in the T-shaped groove on the outer side of the corner slot seat 42. The guide groove 417 slides within the guide groove, ensuring the stability of the movement of the movable block 414. In addition, the two ends of the corner slot seat 42 are connected to the ends of the horizontal slot seat 2 and the vertical slot seat 5 through the connecting device 44. When the horizontal or vertical slot seat expands or contracts, the slide 443 in the connecting device 44 moves within the connecting cavity 442 of the connecting housing 441, and the guide block 444 slides within the T-shaped slide groove 446 of the connecting slot seat 445, so that the corner slot seat 42 can move relative to the horizontal and vertical slot seats, further adapting to the expansion and contraction deformation of the curtain wall, ensuring that the entire expansion joint device can work stably under various working conditions, and ensuring the safety and energy-saving performance of the energy-saving glass of the curtain wall.

[0039] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

[0042] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. An expansion joint device for energy-saving glass in curtain walls, characterized in that: It includes an outer frame structure (1), a horizontal slot seat (2), a buffer device one (3), a corner expansion joint mechanism (4), a vertical slot seat (5), and a buffer device two (6); There are several buffer devices (3), and the several buffer devices (3) are fixedly connected to the inside of the upper and lower sides of the outer frame structure (1); There are two transverse slot seats (2), and the two transverse slot seats (2) are located on the upper and lower sides of the outer frame structure (1) respectively. The two transverse slot seats (2) are fixedly connected to the corresponding buffer device (3). There are several buffer devices (6), and several buffer devices (6) are fixedly connected to the inside of the left and right sides of the outer frame structure (1); There are two vertical slot seats (5). The two vertical slot seats (5) are located on the left and right sides of the outer frame structure (1) respectively. The two vertical slot seats (5) are fixedly connected to the corresponding buffer device (6). There are four corner expansion joint mechanisms (4). The four corner expansion joint mechanisms (4) are respectively located at the four corners inside the outer frame structure (1). The two sides of the four corner expansion joint mechanisms (4) are respectively connected to the ends of the corresponding horizontal slot seat (2) and vertical slot seat (5). The corner expansion joint mechanism (4) includes a buffer connection mechanism one (41), a corner slot seat (42), a buffer connection mechanism two (43), and a connection device (44). The transverse card slot (2) has a buffer connection mechanism (41) fixedly connected to both sides of its inner side. The vertical card slot (5) is fixedly connected to two sides of the inner side by a buffer connection mechanism (43). The corner slot seat (42) is movably connected to the inner corner of the outer frame structure (1). The outer side of the corner slot seat (42) is connected to the first buffer connection mechanism (41) and the second buffer connection mechanism (43) respectively. Both ends of the corner slot seat (42) are connected to the ends of the horizontal slot seat (2) and the vertical slot seat (5) through the connecting device (44). The connecting device (44) includes a connecting housing (441), a connecting cavity (442), a slide (443), a guide block (444), a connecting slot seat (445), and a slide (446). The connecting housing (441) is fixedly connected to the end of the corner slot seat (42), and the connecting housing (441) has a connecting cavity (442) inside. The slide (443) is externally movably connected to the inside of the connecting cavity (442) on one side, and a guide block (444) is fixedly connected to the other end of the slide (443). The connecting slot (445) is fixedly connected to the end of the transverse slot (2). A sliding groove (446) is provided on the left side of the connecting slot (445), and the inside of the sliding groove (446) is movably connected to the outside of the guide block (444).

2. The expansion joint device for energy-saving glass in curtain walls according to claim 1, characterized in that: The outer frame structure (1) includes horizontal profiles (11), connecting structures (12) and vertical profiles (13); There are two horizontal profiles (11) and two vertical profiles (13), and the horizontal profiles (11) and the vertical profiles (13) are fixedly connected to each other by a connecting structure (12).

3. The expansion joint device for energy-saving glass in curtain walls according to claim 2, characterized in that: The connection structure (12) includes a first connection block (121), a first connection groove (122), a fixing screw (123), a second connection block (124), a second connection groove (125), and a connection clip (126). The first connecting block (121) and the second connecting block (124) are respectively fixedly connected to the outside of the connection of the corresponding horizontal profile (11) and vertical profile (13). The first connecting groove (122) and the second connecting groove (125) are respectively opened in the center of the outer side of the first connecting block (121) and the second connecting block (124). One side of the connecting block (126) is fixedly connected to the inside of the first connecting groove (122) by several fixing screws (123), and the other side of the connecting block (126) is fixedly connected to the inside of the second connecting groove (125) by several fixing screws (123).

4. The expansion joint device for energy-saving glass in curtain walls according to claim 1, characterized in that: The second buffer device (6) has the same structure as the first buffer device (3). The first buffer device (3) includes an outer shell (31), an inner cavity (32), a spring (33), a movable block (34), and a limiting protrusion (35). The outer shell (31) has an inner cavity (32) inside; The upper side of the movable block (34) is movably connected to the inside of the inner cavity (32). A spring (33) is provided between the upper side of the movable block (34) and the upper side of the inner cavity (32). Limiting grooves (35) are provided on both sides of the upper side of the movable block (34).

5. The expansion joint device for energy-saving glass in curtain walls according to claim 1, characterized in that: The second buffer connection mechanism (43) has the same structure as the first buffer connection mechanism (41). The first buffer connection mechanism (41) includes a second outer shell (411), a second inner cavity (412), a second spring (413), a second movable block (414), a second limiting protrusion (415), a slider (416), and a guide groove (417). The outer shell (411) has an inner cavity (412) inside. The upper side of the movable block 2 (414) is movably connected to the interior of the inner cavity 2 (412). A spring 2 (413) is provided between the upper interior of the movable block 2 (414) and the upper side of the inner cavity 2 (412). Limiting protrusions 2 (415) are provided on both sides of the upper side of the movable block 2 (414). The slider (416) is fixedly connected to the bottom of the movable block two (414), the movable block two (414) is externally connected to the inside of the guide groove (417), and the guide groove (417) is opened on the outer side of the corner slot seat (42).

6. The expansion joint device for energy-saving glass in curtain walls according to claim 5, characterized in that: The guide groove (417) is a T-shaped guide groove and matches the outside of the slider (416).

7. The expansion joint device for energy-saving glass in curtain walls according to claim 1, characterized in that: The slide (446) is a T-shaped slide and matches the outside of the guide block (444).

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