A telescopic connecting device for glass curtain walls

Abstract

The application discloses a telescopic connecting device for glass curtain walls, which comprises an elastic connecting assembly installed between a first curtain wall glass and a second curtain wall glass with a telescopic joint, wherein the elastic connecting assembly is composed of a first fixing base, a second fixing base and a sealing rubber sheet sealingly connected between the first fixing base and the second fixing base; the sealing rubber sheet is distributed in parallel along the extension direction of the telescopic joint and has a wave-shaped cross section; a plurality of elastic telescopic assemblies are arranged between the first fixing base and the second fixing base, and the two ends of each elastic telescopic assembly are connected with the first fixing base and the second fixing base respectively. The first fixing base and the second fixing base are elastically connected through the plurality of elastic telescopic assemblies, so that the damage of the two curtain wall glasses at the telescopic joint is avoided; the sealing rubber sheet distributed in parallel along the extension direction of the telescopic joint and having a wave shape has a good sealing effect; and the device has a simple structure and is convenient for quick assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass curtain wall, and particularly relates to a telescopic connecting device for glass curtain wall. BACKGROUND

[0002] In order to prevent the building components from thermal expansion and cold contraction due to climate temperature changes, cracks or damage to the structure, a structural joint, i.e. a telescopic joint, is usually provided at the appropriate position along the construction joint direction of the building or structure. When the glass curtain wall extends beyond the telescopic joint, the curtain wall is damaged due to the rigid connection between the curtain wall and the building. In order to avoid this phenomenon, the usual way is to use a telescopic aluminum connecting piece that is buckled on both sides for sealing connection. However, the wear of the connecting piece is more serious after a period of use because the friction at the end of the telescopic part is sliding friction. After wear, the sealing effect of the telescopic joint connection is affected. At the same time, the existing connecting device of the telescopic joint of the glass curtain wall is usually more complex in structure, which also leads to more time and effort in the installation process.

[0003] Therefore, it is urgent to develop a telescopic connecting device for glass curtain wall which is simple in structure, easy to assemble and good in sealing performance. SUMMARY

[0004] The purpose of the present application is to provide a telescopic connecting device for glass curtain wall, which solves the problems of complex structure and insufficient sealing effect of the existing connecting device of the telescopic joint of the glass curtain wall.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A telescopic connecting device for glass curtain wall, comprising an elastic connecting assembly installed between a first curtain wall glass and a second curtain wall glass which are spaced apart by a telescopic joint, the elastic connecting assembly is composed of a first fixed seat fixedly connected with the edge of the first curtain wall glass, a second fixed seat fixedly connected with the edge of the second curtain wall glass, and a sealing rubber sheet sealingly connected between the first fixed seat and the second fixed seat, the sealing rubber sheet is distributed in parallel along the extension direction of the telescopic joint and the cross-sectional shape of the sealing rubber sheet is wave-shaped, and a plurality of elastic telescopic assemblies are further arranged between the first fixed seat and the second fixed seat, and the two ends of each elastic telescopic assembly are connected with the first fixed seat and the second fixed seat, respectively.

[0007] Further, the first fixing seat and the second fixing seat are symmetrically arranged, and each of the first fixing seat and the second fixing seat comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is vertically connected with a first connecting plate, the lower clamping plate is vertically connected with a second connecting plate, the second connecting plate is provided with a first screw rod extending towards the expansion joint and used for connecting the sealing rubber sheet and a first nut mounted on the first screw rod, and the first connecting plate is provided with a first slot-shaped mounting hole corresponding to the first screw rod. During installation, the first fixing seat and the first curtain wall glass are fixed, and the second fixing seat and the second curtain wall glass are fixed by using the clamping cooperation of the upper clamping plate and the lower clamping plate and the locking cooperation of the first nut and the first screw rod, so that the installation process is simple and convenient.

[0008] Further, the length direction of the first slot-shaped mounting hole is parallel to the thickness direction of the first curtain wall glass. In this way, the first fixing seat and the second fixing seat can be adapted to curtain wall glasses with different thicknesses.

[0009] Further, both ends of the sealing rubber sheet are provided with through holes sleeved on the first screw rod, and a gasket is sleeved between the sealing rubber sheet and the first connecting plate and between the sealing rubber sheet and the first nut.

[0010] Further, a cover plate is arranged on the outer side of the first curtain wall glass and the second curtain wall glass and used for covering the elastic connecting assembly, one end of the cover plate close to the first curtain wall glass is slidably connected with the first fixing seat, and the other end of the cover plate close to the second curtain wall glass is slidably connected with the second fixing seat. In this way, the cover plate can not only play a decorative role, but also cover and protect the structure at the expansion joint. Meanwhile, since the cover plate is slidably connected with the first fixing seat and the second fixing seat, the overall expansion connection effect is not affected.

[0011] Further, a magnetic attraction device is arranged between the cover plate and the first fixing seat and between the cover plate and the second fixing seat, and the magnetic attraction device comprises an iron plate parallel to the length direction of the cover plate and a plurality of linearly and equidistantly arranged magnet blocks. The cover plate, the first fixing seat and the second fixing seat are firmly connected by the magnetic attraction effect of the magnet blocks and the iron plate, and when the building is deformed by expansion and contraction, the cover plate can slide relative to the first fixing seat and the second fixing seat under the magnetic attraction.

[0012] Further, the upper clamping plate is integrally and bently connected with an L-shaped fixing plate, and the L-shaped fixing plate and the upper clamping plate enclose a receiving groove used for fixing the magnet blocks.

[0013] Further, the iron plate is provided with a clamping joint on the side surface facing the L-shaped fixing plate, and the L-shaped fixing plate is provided with a second strip-shaped mounting hole distributed along the width direction of the expansion joint. In this way, the clamping joint and the second strip-shaped mounting hole can be clamped together to further prevent the cover plate from falling off, and the second strip-shaped mounting hole also serves as a guide, so that when the building deforms, the cover plate can slide along the direction perpendicular to the expansion joint.

[0014] Further, the cover plate is provided with a first brush strip abutting against the first curtain wall glass at one end close to the first fixing seat, and is provided with a second brush strip abutting against the second curtain wall glass at one end close to the second fixing seat. The first brush strip and the second brush strip can prevent rainwater and dust from entering the expansion joint, further improving the sealing performance.

[0015] Further, the elastic expansion assembly comprises a first cylinder, a first spring, a connecting rod, a second spring and a second cylinder, the first cylinder and the second cylinder are both provided with an open accommodating cavity in sliding connection with the connecting rod, the two ends of the first spring are fixedly connected with the bottom wall of the first cylinder and one end of the connecting rod respectively, and the two ends of the second spring are fixedly connected with the bottom wall of the second cylinder and the other end of the connecting rod respectively; the first cylinder and the second cylinder are both provided with a second screw rod at one end away from the connecting rod, and a second nut is mounted on the second screw rod; the first fixing seat and the second fixing seat are both provided with a third connecting plate, and the third connecting plate is provided with a through hole through which the second screw rod passes. The two springs are fixedly connected at both ends of the connecting rod to offset the deformation of the building. Specifically, when the two curtain wall glasses move close to each other, the two springs are compressed and shrink; when the two curtain wall glasses move away from each other, the two springs are stretched.

[0016] Further, the connecting rod is spliced by a first rod body and a second rod body connected by threads, the first rod body has a first connecting part at one end inside the first cylinder, the first cylinder is provided with a first limiting ring at the opening, the second rod body has a second connecting part at one end inside the second cylinder, and the second cylinder is provided with a second limiting ring at the opening. By setting the connecting rod in a detachable splicing structure, the length of the connecting rod can be quickly assembled and adjusted according to the width of the expansion joint, so that the effect of expansion connection is better.

[0017] Further, the first fixing seat and the first curtain wall glass, and the second fixing seat and the second curtain wall glass are both sleeved with a sealing strip with a cross section in the shape of M, so as to improve the sealing performance and have better buffering effect.

[0018] Compared with the prior art, the application provides a telescopic connecting device for a glass curtain wall, which has the following beneficial effects:

[0019] The first fixed seat and the second fixed seat are elastically connected by the plurality of elastic telescopic components, so that damage of the two curtain wall glasses at the expansion joint is avoided; meanwhile, the wave-shaped sealing rubber sheet parallelly distributed along the extension direction of the expansion joint is assembled between the first fixed seat and the second fixed seat, since the sealing rubber sheet can be deformed freely under external force, so that the overall structure has better sealing effect; and during installation, the first fixed seat and the second fixed seat are only required to be assembled with the two curtain wall glasses adjacent and spaced apart at the expansion joint, since the structure is simple, the quick assembly is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some of the embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] Figure 1 It is a structural schematic view of the application;

[0022] Figure 2 It is an assembly schematic view of the upper clamping plate and the lower clamping plate;

[0023] Figure 3 It is an assembly schematic view of the sealing rubber sheet, the first fixed seat, the second fixed seat, the first curtain wall glass and the second curtain wall glass;

[0024] Figure 4 It is an assembly schematic view of the elastic telescopic component;

[0025] Figure 5 It is a structural schematic view of the elastic telescopic component;

[0026] Figure 6 It is an assembly schematic view of the cover plate.

[0027] 1, 2, 3, 4, 41, 411, 412, 413, 4131, 414, 4141, 4142, 415, 4151, 416, 417, 42, 43, 44, 5, 51, 511, 512, 513, 52, 53, 531, 532, 533, 534, 54, 55, 56, 57, 6, 61, 62, 7, 71, 8, 9. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0033] The present application will be further described in detail below through specific examples and in conjunction with the accompanying drawings.

[0034] Please refer to Figures 1-6 The embodiment provides a telescopic connecting device for glass curtain wall, which comprises an elastic connecting assembly 4 mounted between first curtain wall glass 1 and second curtain wall glass 2 which are spaced apart by a telescopic joint 3. The elastic connecting assembly 4 is composed of a first fixed seat 41 fixedly connected with the edge of the first curtain wall glass 1, a second fixed seat 42 fixedly connected with the edge of the second curtain wall glass 2, and a sealing rubber sheet 43 sealingly connected between the first fixed seat 41 and the second fixed seat 42. The sealing rubber sheet 43 is distributed in parallel along the extension direction of the telescopic joint 3, and the cross-sectional shape of the sealing rubber sheet 43 is wave-shaped. A plurality of elastic telescopic assemblies 5 are arranged between the first fixed seat 41 and the second fixed seat 42, and the two ends of each elastic telescopic assembly 5 are connected with the first fixed seat 41 and the second fixed seat 42 respectively. The first fixed seat 41 and the second fixed seat 42 are elastically connected by the plurality of elastic telescopic assemblies 5, so as to avoid damage to the two curtain wall glasses at the telescopic joint 3. Meanwhile, the wave-shaped sealing rubber sheet 43 distributed in parallel along the extension direction of the telescopic joint 3 is assembled between the first fixed seat 41 and the second fixed seat 42. Since the sealing rubber sheet can deform freely under external force, the overall structure can have good sealing effect. In addition, during installation, the first fixed seat and the second fixed seat only need to be assembled with the two curtain wall glasses adjacent and spaced apart at the telescopic joint respectively. Since the structure is simple, it can be quickly assembled.

[0035] Specifically, the first fixing seat 41 and the second fixing seat 42 are symmetrically arranged structures and extend along the expansion joint 3. As shown in the drawings, Figure 2 The first fixing seat 41 and the second fixing seat 42 each include an upper clamping plate 411 and a lower clamping plate 412, the upper clamping plate 411 is vertically connected with a first connecting plate 413, the lower clamping plate 412 is vertically connected with a second connecting plate 414, the second connecting plate 414 is provided with a first screw rod 4141 extending towards the expansion joint 3 for connecting the sealing rubber sheet 43 and a first nut 4142 mounted on the first screw rod 4141, and the first connecting plate 413 is correspondingly provided with a first strip-shaped mounting hole 4131 through which the first screw rod 4141 passes. During installation, the first fixing seat and the first curtain wall glass are fixed, and the second fixing seat and the second curtain wall glass are fixed by using the clamping cooperation of the upper clamping plate and the lower clamping plate and the locking cooperation of the first nut and the first screw rod, and the installation process is relatively simple and convenient.

[0036] In some specific embodiments, the length direction of the first strip-shaped mounting hole 4131 is parallel to the thickness direction of the first curtain wall glass 1. In this way, the first fixing seat and the second fixing seat can be adapted to curtain wall glasses of different thicknesses.

[0037] In some specific embodiments, as shown in Figure 2 and Figure 3 The two ends of the sealing rubber sheet 43 are each provided with a through hole sleeved on the first screw rod 4141, and a gasket 44 is sleeved between the sealing rubber sheet 43 and the first connecting plate 413 and between the sealing rubber sheet 43 and the first nut 4142.

[0038] Referring to Figure 1 and Figure 6 As an improved embodiment, a cover plate 6 is arranged on the outer side of the first curtain wall glass 1 and the second curtain wall glass 2 for covering the elastic connecting assembly 4, the cover plate 6 is slidably connected to the first fixing seat 41 at one end close to the first curtain wall glass 1, and the cover plate 6 is slidably connected to the second fixing seat 42 at the other end close to the second curtain wall glass 2. In this way, by adding the cover plate, not only can the effect of decoration be achieved, but also the structure at the expansion joint can be covered and protected; at the same time, since the cover plate is slidably connected to the first fixing seat and the second fixing seat, the overall expansion connection effect will not be affected.

[0039] In some specific embodiments, as shown in Figure 6As shown, the cover plate 6 and the first fixed seat 41, and the cover plate 6 and the second fixed seat 42 are provided with magnetic attraction devices, which include iron plates 7 distributed in parallel along the length direction of the cover plate 6 and a plurality of linearly and equidistantly distributed magnet blocks 8. Through the magnetic attraction between the magnet blocks and the iron plates, the cover plate can be firmly connected with the first fixed seat and the second fixed seat, and when the building is deformed by expansion and contraction, the cover plate can slide with the first fixed seat and the second fixed seat under the magnetic attraction.

[0040] In some specific embodiments, as shown in Figure 2 As shown, the upper clamping plate 411 is integrally and bently connected with an L-shaped fixed plate 415, and the L-shaped fixed plate 415 and the upper clamping plate 411 enclose a receiving groove 416 for fixing the magnet block 8.

[0041] In some specific embodiments, as shown in Figure 2 、 Figure 6 and Figure 1 As shown, the iron plate 7 is provided with a clamping joint 71 on the side surface facing the L-shaped fixed plate 415, and the L-shaped fixed plate 415 is provided with a second strip-shaped mounting hole 4151 distributed along the width direction of the expansion joint 3. In this way, the clamping joint and the second strip-shaped mounting hole can be clamped to further avoid the cover plate from falling off, and the second strip-shaped mounting hole also plays a guiding role, so that when the building is deformed by expansion and contraction, the cover plate can slide in the direction perpendicular to the expansion joint.

[0042] In some specific embodiments, as shown in Figure 6 and Figure 1 As shown, the cover plate 6 is provided with a first brush strip 61 abutting against the first curtain wall glass 1 at one end close to the first fixed seat 41, and the cover plate 6 is provided with a second brush strip 62 abutting against the second curtain wall glass 2 at one end close to the second fixed seat 42. Through the first brush strip and the second brush strip, rainwater and dust can be prevented from entering the expansion joint, further improving the sealing performance.

[0043] Preferably, the first fixed seat 41 and the second fixed seat 42 are made of stainless steel plates or aluminum plates.

[0044] Reference Figures 4-6 and Figure 1In some specific embodiments, the elastic telescopic component 5 includes a first cylinder 51, a first spring 52, a connecting rod 53, a second spring 54, and a second cylinder 55. Both the first cylinder 51 and the second cylinder 55 have open receiving cavities 511 that are slidably connected to the connecting rod 53. The two ends of the first spring 52 are fixedly connected to the bottom wall of the first cylinder 51 and one end of the connecting rod 53, respectively. The two ends of the second spring 54 are fixedly connected to the bottom wall of the second cylinder 55 and the other end of the connecting rod 53, respectively. Both the first cylinder 51 and the second cylinder 55 have a second screw 512 and a second nut 513 mounted on the second screw 512 at the end away from the connecting rod 53. Both the first fixing seat 41 and the second fixing seat 42 have a third connecting plate 417, which has a through hole through which the second screw 512 can pass. By fixing springs to both ends of the connecting rod, the deformation of the building is offset and buffered. Specifically, when the two curtain wall glass panes move closer together, the two springs are compressed and contract; when the two curtain wall glass panes move away from each other, the two springs are stretched and extend.

[0045] Preferred, such as Figure 5 As shown, the connecting rod 53 is formed by splicing a first rod body 531 and a second rod body 532 connected by threads. The first rod body 531 has a first connecting portion 533 with an outer diameter larger than the first rod body at one end located inside the first cylindrical body 51. A first limiting ring 56 is installed at the opening of the first cylindrical body 51. The second rod body 532 has a second connecting portion 534 with an outer diameter larger than the second rod body at one end located inside the second cylindrical body 55. A second limiting ring 57 is installed at the opening of the second cylindrical body 55. By setting the connecting rod to a detachable splicing structure, it is easy to assemble quickly and the length of the connecting rod can be flexibly adjusted according to the width of the expansion joint, thereby better realizing the effect of the expansion connection.

[0046] In some specific implementation methods, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, a U-shaped sealing strip 9 is fitted between the first fixing seat 41 and the first curtain wall glass 1, and between the second fixing seat 42 and the second curtain wall glass 2, thereby improving the sealing performance and having a better buffering effect.

[0047] During assembly, such as Figure 2As shown, first, the clamping cooperation of the upper clamping plate 411 and the lower clamping plate 412 and the locking cooperation of the first nut 4142 and the first screw rod 4141 are utilized, so that the first fixed seat 41 and the first curtain wall glass 1 are fixed, the second fixed seat 42 and the second curtain wall glass 2 are fixed, and the connecting fixed sealing rubber sheet 43 is connected, realizing the sealing of the two adjacent curtain wall glasses at the expansion joint 3, and the installation process is relatively simple and convenient. Figure 3 As shown, the first fixed seat 41 and the second fixed seat 42 are fixed on the first curtain wall glass 1 and the second curtain wall glass 2 respectively. Figure 4 And Figure 5 As shown, the elastic expansion assembly 5 is installed along the expansion joint one by one, and the two ends of the elastic expansion assembly 5 are fixed on the third connecting plate 417 on both sides by the cooperation of the second screw rod 512 and the second nut 513, realizing the elastic connection of the two adjacent curtain wall glasses at the expansion joint. Figure 6 Finally, as shown, the cover plate 6 is buckled on the first fixed seat 41 and the second fixed seat 42, so as to protect the structure at the expansion joint. Figure 1 As shown, through the magnetic attraction effect of the magnet block 8 and the iron plate 7, the cover plate 6 can be firmly connected with the first fixed seat 41 and the second fixed seat 42, and when the building is deformed by expansion and contraction, the cover plate 6 can slide with the first fixed seat 41 and the second fixed seat 42 under the magnetic attraction, so as not to affect the expansion and contraction of the curtain wall glass.

[0048] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0049] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the skilled person should consider the specification as a whole, and the technical solutions in each embodiment can be combined to form other embodiments which can be understood by the skilled person.

Claims

1. A telescopic connecting device for a glass curtain wall, comprising a resilient connecting assembly installed between a first curtain wall glass and a second curtain wall glass which are spaced apart by a telescopic joint, characterized in that: The elastic connecting assembly is composed of a first fixing seat fixedly connected with the edge of the first curtain wall glass, a second fixing seat fixedly connected with the edge of the second curtain wall glass, and a sealing rubber sheet sealingly connected between the first fixing seat and the second fixing seat, the sealing rubber sheet is distributed in parallel along the extension direction of the expansion joint and the cross-sectional shape of the sealing rubber sheet is wave-shaped, a plurality of elastic expansion assemblies are further arranged between the first fixing seat and the second fixing seat, and the two ends of each elastic expansion assembly are respectively connected with the first fixing seat and the second fixing seat.

2. The telescopic connecting device for glass curtain wall according to claim 1, characterized in that: The first fixing seat and the second fixing seat are symmetrically arranged, each of the first fixing seat and the second fixing seat comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is vertically connected with a first connecting plate, the lower clamping plate is vertically connected with a second connecting plate, the second connecting plate is provided with a first screw rod protruding towards the expansion joint and used for connecting the sealing rubber sheet and a first nut mounted on the first screw rod, and the first connecting plate is provided with a first slot-shaped mounting hole corresponding to the first screw rod.

3. The telescopic connecting device for glass curtain wall according to claim 1, characterized in that: A cover plate is arranged on the outer side of the first curtain wall glass and the second curtain wall glass and used for covering the elastic connecting assembly, one end of the cover plate close to the first curtain wall glass is slidingly connected with the first fixing seat, and the other end of the cover plate close to the second curtain wall glass is slidingly connected with the second fixing seat.

4. The telescopic connecting device for glass curtain wall according to any one of claims 1-3, characterized in that: A magnetic attraction device is arranged between the cover plate and the first fixing seat and between the cover plate and the second fixing seat, the magnetic attraction device comprises iron plates distributed in parallel along the length direction of the cover plate and a plurality of magnet blocks distributed in straight lines at equal intervals. The length direction of the first slot-shaped mounting hole is parallel to the thickness direction of the first curtain wall glass. The cover plate is provided with a first brush strip abutting against the first curtain wall glass at one end close to the first fixing seat, and the cover plate is provided with a second brush strip abutting against the second curtain wall glass at the other end close to the second fixing seat. The elastic expansion assembly comprises a first cylinder, a first spring, a connecting rod, a second spring and a second cylinder, the first cylinder and the second cylinder are provided with open accommodating cavities slidingly connected with the connecting rod, the two ends of the first spring are fixedly connected with the bottom wall of the first cylinder and one end of the connecting rod respectively, and the two ends of the second spring are fixedly connected with the bottom wall of the second cylinder and the other end of the connecting rod respectively. The first cylinder and the second cylinder are provided with a second screw rod and a second nut mounted on the second screw rod at the end away from the connecting rod, and the first fixing seat and the second fixing seat are provided with a third connecting plate, the third connecting plate is provided with a through hole through which the second screw rod passes.

5. The telescopic connecting device for glass curtain wall according to claim 4, characterized in that: The connecting rod is spliced by a first rod body and a second rod body connected by threads, the first rod body has a first connecting part at one end inside the first cylinder body, the first cylinder body is provided with a first limiting ring at an open end, the second rod body has a second connecting part at one end inside the second cylinder body, and the second cylinder body is provided with a second limiting ring at an open end.

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