Pipe docking device for window blinds

Abstract

The utility model discloses a pipe butt joint device of curtain, is used for coaxial fixed connection first pipe fitting and second pipe fitting, include: the first bracing piece and the second bracing piece of parallel arrangement, both opposite two ends are inserted respectively in the butt joint end of first pipe fitting and second pipe fitting, the side wall of first bracing piece and second bracing piece two opposite each other forms the slot, and the slot is respectively located on the opposite two side groove walls of first bracing piece and second bracing piece and constitutes the stress surface, and two stress surfaces are mutually oblique, and, the pushing mechanism includes the pushing block of corresponding insertion slot and is used for driving pushing block to move the drive assembly, and pushing two stress surfaces when pushing block removes to the position of close abutment and makes first bracing piece with second bracing piece each other away and by two sides of outer wall respectively adhering and close abutment first pipe fitting and second pipe fitting corresponding inner wall and fixed connection first pipe fitting and second pipe fitting. The utility model discloses an embodiment can fast, stably realize the butt joint of two pipe fittings.

Description

Technical Field

[0001] This utility model relates to the field of curtain accessories technology, and in particular to a curtain tube docking device. Background Technology

[0002] In curtain products, components such as the top rail, roller, and bottom rail are typically made of tubing. These tubing lengths are usually pre-made in various standard lengths based on the standard width of different curtain sizes. However, in practical applications, the non-standard width of windows often necessitates changes in curtain width. When the curtain width needs to be reduced, the original standard length tubing can be fitted by sawing off the excess. But when the curtain width increases, the original standard length tubing is insufficient, requiring custom-made lengths to meet the actual needs, resulting in higher overall curtain costs. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a curtain tube docking device that can conveniently and stably connect two tubes.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a curtain pipe fitting docking device for coaxially fixing a first pipe fitting and a second pipe fitting, the device comprising: A first and second support rod are arranged parallel to each other. The opposite ends of the first and second support rods are respectively inserted into the mating ends of the first and second pipe fittings. A slot is formed between the opposite sidewalls of the first and second support rods. The slots, located on opposite sides of the first and second support rods, form force-bearing surfaces, which are obliquely intersecting each other. The pushing mechanism includes a pushing block inserted into the slot and a driving component for driving the pushing block to move between a loose position and a tight position. When the pushing block moves to the tight position, it pushes the two force-bearing surfaces to move the first support rod and the second support rod away from each other. The outer walls of the opposite sides of the first support rod and the second support rod respectively abut against the inner walls of the first pipe and the second pipe, thus fixing the first pipe and the second pipe together.

[0005] Furthermore, the driving component includes: A base with a shaft hole in the middle is placed between the first support rod and the second support rod and is respectively adjacent to the opposite ends of the first support rod and the second support rod, and is respectively inserted into the positioning grooves opened on the first support rod and the second support rod. A screw rod, passing through the shaft hole of the base and axially perpendicular to the length direction of the first and second support rods, is axially fixed relative to the base. One end of the screw rod is provided with an operating part for driving the screw rod to rotate; and A nut slider is threadedly connected to the screw, and the nut slider is provided with a first guide portion arranged parallel to the axial direction of the screw. At least one of the first support rod, the second support rod and the base is provided with a second guide portion that cooperates with the first guide portion to prevent the nut slider from rotating around the central axis of the screw and to guide the nut slider to slide back and forth in the axial direction of the screw. Each of the two slots is provided on opposite sides of the nut slider, with the slot openings facing each other. Each slot contains a push block. The adjacent ends of each push block and the nut slider are abutted by inclined surfaces that are parallel to each other and oblique to the axial direction of the screw. When the nut slider slides along the axial direction of the screw under the drive of the screw, the push blocks are driven by the mutual abutment of the inclined surfaces to move from the loosened position close to the screw to the tight position away from the screw.

[0006] Furthermore, one of the adjacent ends of the push block and the nut slider is provided with a hook and the other is provided with a hook groove. The hook part of the hook is hooked into the hook groove. The thickness of the hook part is adapted to the internal space of the hook groove in the thickness direction. The opposite sidewalls of the hook groove in the thickness direction are parallel to each other and oblique to the axial direction of the screw.

[0007] Furthermore, the drive assembly also includes an elastic element for driving the push block back to the loosened position when the nut slider slides on the screw in a second direction opposite to the first direction.

[0008] Furthermore, the first support rod and / or the second support rod are also provided with guide grooves for guiding the directional sliding of the push block, and the middle section of the push block forms a guide post that corresponds to and cooperates with the guide groove.

[0009] Furthermore, the driving component includes: A base with a centrally located shaft hole is positioned between the first and second support rods, with the base adjacent to the opposite ends of the first and second support rods, respectively inserted into corresponding positioning grooves on the first and second support rods; and A screw rod is inserted into the shaft hole of the base and is axially fixed relative to the base. The axial direction of the screw rod is perpendicular to the length direction of the first support rod and the second support rod. One end of the screw rod forms an operating part for driving the screw rod to rotate. The push block is screwed onto the screw rod. The opening direction of the slot is parallel to the axial direction of the screw rod and faces the push block. The push block is provided with a first guide portion arranged parallel to the central axis of the screw rod. At least one of the first support rod, the second support rod, and the base is provided with a second guide portion that cooperates with the first guide portion to prevent the push block from rotating around the central axis of the screw rod and to guide the push block to slide back and forth in the axial direction of the screw rod. The end of the push block is inserted into the slot and slides along the axial direction of the screw rod in a first direction under the drive of the screw rod, moving from the loosened position to the tight position.

[0010] Furthermore, one end of the screw protrudes radially to form a large head. The inner end face of the large head, which is opposite to the screw in the axial direction, abuts against the base, while the outer end face abuts against the corresponding stop wall formed on the first support rod and / or the second support rod. The operating part is also provided in the middle of the outer end face of the large head, and a through hole is provided on the stop wall for the operating part to be exposed.

[0011] Furthermore, both the first and second support rods have positioning posts and positioning holes on their opposite sides, and the positioning post on one of the first and second support rods is inserted into the positioning hole on the other.

[0012] Furthermore, both the first and second support rods are composed of support rod units with identical structures. Each support rod unit is provided with a positioning post and a positioning hole, and the positioning posts and positioning holes on the support rod units are symmetrically arranged. During assembly, one support rod unit is rotated 180 degrees relative to the other support rod unit and then its respective positioning post is aligned with the positioning hole of the other and inserted.

[0013] Furthermore, the shape of the outer wall on the opposite side of the first and second support rods is adapted to the shape of the inner wall corresponding to the first and second pipe fittings, and the outer wall also has a relatively protruding boss near the middle section of the first and second support rods respectively, which abuts against the end faces of the first and second pipe fittings respectively to limit the depth of the two ends of the first and second support rods inserted into the first and second pipe fittings.

[0014] After adopting the above technical solution, the present utility model embodiment has at least the following beneficial effects: The present utility model embodiment uses a first support rod, a second support rod and a corresponding pushing mechanism to cooperate. The pushing mechanism pushes the first support rod and the second support rod apart, and the outer walls of the opposite ends of the first support rod and the second support rod respectively press tightly against the inner walls of the first pipe and the second pipe, thereby realizing the docking and fixing of the first pipe and the second pipe. The whole docking operation is convenient and quick, especially convenient in the process of installing curtains, to quickly and firmly connect two short pipes into a long pipe to meet actual needs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an optional embodiment of the curtain fitting docking device of this utility model, showing the structure for fixing the first and second fittings.

[0016] Figure 2 This is a structural diagram of the disassembled state of an optional embodiment of the curtain fitting docking device of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure when the second support rod is disassembled in an optional embodiment of the curtain fitting docking device of this utility model.

[0018] Figure 4 This is a schematic diagram of the combined state of an optional embodiment of the curtain fitting docking device of this utility model.

[0019] Figure 5 This is a cross-sectional view of a central plane along the central axis of the first pipe, passing through the central axis of the screw, in an optional embodiment of the curtain fitting docking device of this utility model.

[0020] Figure 6 An optional embodiment of the curtain tube docking device of this utility model is as follows: Figure 5 The diagram shows a cross-sectional structure of a plane that is parallel to the cross-section and offset a certain distance toward the direction of the second pipe fitting.

[0021] Figure 7 This is a cross-sectional view of an optional embodiment of the curtain fitting docking device of this utility model, along a plane perpendicular to the central axis of the screw and passing through the central axis of the first fitting.

[0022] Figure 8 This is a schematic diagram of the structure of the curtain tube docking device of this utility model, showing the setting of a reset elastic element in another optional embodiment.

[0023] Figure 9 This is a cross-sectional view of another optional embodiment of the curtain fitting docking device of this utility model, along a plane perpendicular to the central axis of the first fitting and passing through the central axis of the screw. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0025] like Figures 1-8As shown, an optional embodiment of this utility model provides a curtain tube fitting docking device for coaxially fixing a first tube fitting 8 and a second tube fitting 9. The device includes: A first support rod 1 and a second support rod 2 are arranged parallel to each other. The opposite ends of the first support rod 1 and the opposite ends of the second support rod 2 are respectively inserted into the mating ends of the first pipe fitting 8 and the second pipe fitting 9. A slot 3 is formed between the opposite sidewalls of the first support rod 1 and the second support rod 2. The slot 3, located on opposite sidewalls of the first support rod 1 and the second support rod 2, forms a force-bearing surface 30. The two force-bearing surfaces 30 intersect each other obliquely. The pushing mechanism 4 includes a pushing block 40 inserted into the slot 3 and a driving component 42 for driving the pushing block 40 to move between a tight position and a loose position. When the pushing block 40 moves to the tight position, it pushes the two force-bearing surfaces 30 respectively, causing the first support rod 1 and the second support rod 2 to move away from each other. The outer walls of the opposite sides of the first support rod 1 and the second support rod 2 respectively abut against the inner walls of the first pipe 8 and the second pipe 9, thus fixing the first pipe 8 and the second pipe 9 in place.

[0026] The working principle of the curtain tube fitting docking device of this utility model for fixing the first tube 8 and the second tube 9 is roughly as follows: The opposite ends of the first support rod 1 and the second support rod 2 are respectively inserted into the docking ends of the first tube 8 and the second tube 9. The driving component 42 of the pushing mechanism 4 is operated to drive the pushing block 40 from the loose position to the tight position. During this process, the pushing block 40 will be inserted deep into the slot 3 and abut against the opposite sides of the slot 3 as the force-bearing surface 30. This pushes the first support rod 1 and the second support rod 2 away from each other, and the outer walls of their opposite sides abut against the corresponding inner walls of the first tube 8 and the second tube 9. This results in a large frictional force between the opposite ends of the first support rod 1 and the second support rod 2 and the first tube 8 and the second tube 9, preventing them from loosening. Thus, the fixing connection of the first tube 8 and the second tube 9 is achieved.

[0027] This utility model embodiment employs a first support rod 1, a second support rod 2, and a corresponding pushing mechanism 4. The pushing mechanism 4 pushes the first support rod 1 and the second support rod 2 apart, so that the outer walls of the opposite ends of the first support rod 1 and the second support rod 2 are respectively pressed against the inner walls of the first pipe fitting 8 and the second pipe fitting 9. This allows for the docking and fixing of the first pipe fitting 8 and the second pipe fitting 9. The entire docking operation is convenient and quick, especially convenient during the installation of curtains, where two short pipes can be quickly and securely connected into a long pipe to meet practical needs.

[0028] In another optional embodiment of this utility model, such as Figures 2 to 7 As shown, the driving component 42 includes: A base 421 with a shaft hole 4210 in the middle is placed between the first support rod 1 and the second support rod 2 and is respectively adjacent to the opposite ends of the first support rod 1 and the second support rod 2 and respectively inserted into the positioning grooves 4212 opened on the first support rod 1 and the second support rod 2. A screw 423, passing through the shaft hole 4210 of the base 421 and axially perpendicular to the length direction of the first support rod 1 and the second support rod 2, is axially fixed to the base 421. One end of the screw 423 is provided with an operating part 4230 for driving the screw 423 to rotate; and A nut slider 425 is threadedly connected to the screw 423. The nut slider 425 is provided with a first guide portion 430 arranged parallel to the axial direction of the screw 423. The first support rod 1 and the second support rod 2 are each provided with a second guide portion 432 that cooperates with the first guide portion 430 to prevent the nut slider 425 from rotating around the central axis of the screw 423 and to guide the nut slider 425 to slide back and forth in the axial direction of the screw 423. Each of the two slots 3 is provided on opposite sides of the nut slider 425, with the slot openings of the two slots 3 facing each other. Each slot 3 is provided with a push block 40. The adjacent ends of each push block 40 and the nut slider 425 abut against each other through inclined surfaces that are parallel to each other and oblique to the axial direction of the screw 423. When the nut slider 425 slides along the axial direction of the screw 423 under the drive of the screw 423, the push blocks 40 are driven to move from the loosened position close to the screw 423 to the tight position away from the screw 423 by the mutual abutment of the inclined surfaces.

[0029] In specific implementations, the second guide portion 432 may also be provided only on the first support rod 1 or the second support rod 2. Furthermore, since the base 421, the first support rod 1, and the second support rod 2 are relatively fixed in the axial direction of the screw 423, the second guide portion 432 may also be provided on the base 421. For example... Figure 2 As shown, the first guide portion 430 can be a rib, while the second guide portion 432 can correspond to a guide groove.

[0030] This embodiment utilizes a screw 423 and a nut slider 425 to transmit power. The nut slider 425 and the push block 40 abut against each other via inclined surfaces, enabling a change in the direction of movement. Specifically, the nut slider 425, sliding along the axial direction of the screw 423, can drive the push block 40 to move from a loose position to a tight position in a direction perpendicular to the axial direction of the screw 423. This ensures smooth power transmission and allows for a change in the direction of movement. Furthermore, the push block 40 can be used to secure the first pipe 8 and the second pipe 9 relatively deep inside, better utilizing the internal space of the two pipes to improve the stability of the connection. In addition, the screw 423 and the nut slider 425 can achieve self-locking, preventing the push block 40 from automatically loosening after it has moved into place, ensuring a secure connection between the first pipe 8 and the second pipe 9.

[0031] In yet another optional embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, one of the adjacent ends of the push block 40 and the nut slider 425 is provided with a hook 440 and the other is provided with a hook groove 442. The hook portion 4400 of the hook 440 is hooked into the hook groove 442. The thickness of the hook portion 4400 is adapted to the internal space of the hook groove 442 in the thickness direction. The opposite side walls of the hook groove 442 in the thickness direction are parallel to each other and oblique to the axial direction of the screw 423. In this embodiment, hooks 440 and grooves 442 are respectively provided at the adjacent ends of the push block 40 and the nut slider 425 for corresponding hook-and-hook connection. This allows the push block 40 and the nut slider 425 to be connected accordingly. When the nut slider 425 moves axially along the screw 423, the groove sidewall of the groove 442 and the corresponding side of the hook portion 4400 of the hook 440 are both inclined surfaces that push against each other, effectively driving the push block 40 to slide back and forth between the loosened and tight positions. That is, it can not only push the push block 40 from the loosened position to the tight position, but also drive the push block 40 back from the tight position to the loosened position. In specific implementation, such as... Figure 2 As shown, the hook 440 can be designed as a T-shape and disposed on the nut slider 425, while the hook groove 442 is a corresponding constricted groove and disposed on the push block 40. The hook 440 slides into the opening of the hook groove 442. Alternatively, the hook 440 can also be L-shaped, with the opening of the hook groove 442 facing the opening of the hook 440, and the hook portion of the hook 440 is directly inserted into the hook groove 442 from the opening of the hook groove 442.

[0032] In another optional embodiment of this utility model, such as Figure 8 As shown, the drive assembly 42 further includes an elastic element 427 for driving the push block 40 back to the released position when the nut slider 425 slides on the screw 423 in a second direction opposite to the first direction. This embodiment uses the elastic element 427 to facilitate manufacturing and assembly by causing the push block 40 to return to the released position. The elastic element 427 can be a spring or an elastic rubber strip. To facilitate the assembly of the elastic element 427, a cavity 403 that is closed at one end and open at the other can be formed inside the push block 40. A stop block 429 corresponding to the first support rod 1 and / or the second support rod 2 is formed and inserted into the cavity 403 through the opening. The opposite ends of the elastic element 427 abut against the stop block 429 and the cavity wall of the cavity 403 near the nut slider 425, respectively. Thus, when the push block 40 moves to the tight abutment position, it will compress the elastic element 427. Therefore, when the nut slider 425 returns to its original position, the elastic element 427 pushes the push block 40 to reset synchronously.

[0033] In another optional embodiment of this utility model, such as Figure 2 , Figures 5 to 8 As shown, the first support rod 1 and / or the second support rod 2 are also provided with guide grooves 14 and 24 for guiding the jacking block 40 to slide in a directional manner, and the middle section of the jacking block 40 forms a guide post 404 that corresponds to and cooperates with the guide grooves 14 and 24.

[0034] In another optional embodiment of this utility model, such as Figure 9 As shown, the driving component 42 includes: A base 421 with a centrally located shaft hole 4210 is positioned between the first support rod 1 and the second support rod 2, and is respectively adjacent to the opposite ends of the first support rod 1 and the second support rod 2. The base 421 is inserted into corresponding positioning grooves 4212 on the first support rod 1 and the second support rod 2. A screw 423 is inserted into the shaft hole 4210 of the base 421 and is axially fixed relative to the base 4210. The axial direction of the screw 423 is perpendicular to the length direction of the first support rod 1 and the second support rod 2. One end of the screw 423 forms an operating part 4230 for driving the screw 423 to rotate. The push block 40 is screwed onto the screw 423. The opening direction of the slot 3 is parallel to the axial direction of the screw 423 and faces the push block 40. The push block 40 is provided with a first guide portion 460 arranged parallel to the central axis of the screw 423. At least one of the first support rod 1, the second support rod 2 and the base 421 is provided with a second guide portion 462 that cooperates with the first guide portion 460 to prevent the push block 40 from rotating around the central axis of the screw 423 and to guide the push block 40 to slide back and forth in the axial direction of the screw 423. The end of the push block 40 is inserted into the slot and slides along the axial direction of the screw in a first direction under the drive of the screw, moving from the loosened position to the tight position.

[0035] This embodiment provides a drive mechanism with an alternative construction compared to... Figure 2 In the illustrated embodiment, the orientation of the slot 3 is modified to be parallel to the axial direction of the screw 423, and the push block 40 is directly screwed onto the screw 423, allowing it to slide axially under the drive of the screw 423. Furthermore, one end of the push block 40 inserted into the slot 3 pushes against the two force-bearing surfaces 30 of the slot 3, similarly pushing the first support rod 1 and the second support rod 2 apart, thus achieving the effect of fixing the connection between the first pipe fitting 8 and the second pipe fitting 9. In such a way... Figure 9 In the embodiment shown, the push block 40 can extend outward to a sufficient length on opposite sides of the first support rod 1 and the second support rod 2 in the length direction, and have sufficient contact area with the first support rod 1 and the second support rod 2, so as to ensure that a sufficiently large frictional force is formed when they are pressed together to achieve a stable connection between the first pipe 8 and the second pipe 9.

[0036] In another optional embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 5As shown, one end of the screw 423 protrudes radially to form a large head 4232. The inner end face of the large head 4232, which is opposite to the screw 423 in the axial direction, abuts against the base 421, while the outer end face abuts against the stop wall 47 correspondingly formed on the first support rod 1 and / or the second support rod 2. The operating part 4230 is also provided in the middle of the outer end face of the large head 4232. The stop wall 47 is provided with a through hole 470 for the operating part 4230 to be exposed. In this embodiment, a large head is formed at one end of the screw 423. The screw 423 is axially positioned by having one end of the large head abut against the base 421 and the other end against the stop wall 47 on the first support rod 1 and / or the second support rod 2. Furthermore, the operating part 4230 is disposed on the outer end face of the large head 4232 and exposed through a through hole 470 on the stop wall 47 of the first support rod 1 and / or the second support rod 2, but does not protrude externally, thus preventing accidental contact or operation. In specific implementations, the operating part 4230 may have a non-circular cross-section (e.g., ...). Figure 2 The regular hexagon shown can also be a blind hole or a protruding post (such as an equilateral triangle or a regular pentagon). During operation, the screw 423 can be driven to rotate by inserting a corresponding tool 7 into the inner hole or fitting it onto the protruding post.

[0037] In another optional embodiment of this utility model, such as Figure 2 , Figure 5 and Figure 6 As shown, the first support rod 1 and the second support rod 2 have positioning posts 15 and positioning holes 16 respectively on their opposite sides. The first support rod 1 and the second support rod 2 are positioned relative to each other in the length direction by inserting the positioning posts 15 and positioning holes 16. In this embodiment, by also providing positioning posts 15 and positioning holes 16 on the first support rod 1 and the second support rod 2 respectively for mutual insertion, the mutual positioning of the first support rod 1 and the second support rod 2 in the length direction can be achieved without affecting the mutual separation and tight contact between the two under the drive of the push block 40.

[0038] In another optional embodiment of this utility model, such as Figure 2 As shown, both the first support rod 1 and the second support rod 2 are composed of identical support rod units. Each support rod unit has a positioning post 15 and a positioning hole 16, and the positioning posts 15 and positioning holes 16 on the support rod units are symmetrically arranged. During assembly, one support rod unit is rotated 180 degrees relative to the other support rod unit, and then its respective positioning post 15 is aligned with the positioning hole 16 of the other. This embodiment, by designing the first support rod 1 and the second support rod 2 to have identical structures, effectively simplifies manufacturing, reduces manufacturing costs, and facilitates assembly.

[0039] In another optional embodiment of this utility model, the shape of the outer wall on the opposite side of the first support rod 1 and the second support rod 2 is adapted to the shape of the inner wall corresponding to the first pipe 8 and the second pipe 9. Furthermore, the outer wall has protrusions 17 and 27 near the middle sections of the first support rod 1 and the second support rod 2, respectively, to abut against the end faces of the connecting ends of the first pipe 8 and the second pipe 9, thereby limiting the depth of insertion of the two ends of the first support rod 1 and the second support rod 2 into the first pipe 8 and the second pipe 9. This embodiment, by designing the shape of the outer wall on the opposite side of the first support rod 1 and the second support rod 2 to adapt to the shape of the inner wall corresponding to the first pipe 8 and the second pipe 9, can achieve a larger contact area and correspondingly greater friction, which is beneficial for a more stable and secure connection of the first pipe 8 and the second pipe 9. The design of the protrusions 17 and 27 can achieve effective positioning, preventing one end of the first support rod 1 and the second support rod 2 from being excessively inserted into the first pipe 8 and the second pipe 9, ensuring symmetrical distribution at both ends and more balanced force distribution.

[0040] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many variations under the guidance of the present invention without departing from the inventive spirit and scope of protection of the claims. These variations are all within the protection scope of the present invention.

Claims

1. A tube docking device for a window covering for fixedly connecting a first tube and a second tube coaxially, characterized in that The device includes: A first and second support rod are arranged parallel to each other. The opposite ends of the first and second support rods are respectively inserted into the mating ends of the first and second pipe fittings. A slot is formed between the opposite sidewalls of the first and second support rods. The slots, located on opposite sides of the first and second support rods, form force-bearing surfaces, which are obliquely intersecting each other. The pushing mechanism includes a pushing block inserted into the slot and a driving component for driving the pushing block to move between a tight position and a loose position. When the pushing block moves to the tight position, it pushes the two force-bearing surfaces to move the first support rod and the second support rod away from each other. The outer walls of the opposite sides of the first support rod and the second support rod respectively abut against the inner walls of the first pipe and the second pipe, thus fixing the first pipe and the second pipe together.

2. The tube docking device for a window treatment of claim 1, wherein, The driving component includes: A base with a shaft hole in the middle is placed between the first support rod and the second support rod and is respectively adjacent to the opposite ends of the first support rod and the second support rod, and is respectively inserted into the positioning grooves opened on the first support rod and the second support rod. A screw rod, passing through the shaft hole of the base and axially perpendicular to the length direction of the first and second support rods, is axially fixed relative to the base. One end of the screw rod is provided with an operating part for driving the screw rod to rotate; and A nut slider is threadedly connected to the screw, and the nut slider is provided with a first guide portion arranged parallel to the axial direction of the screw. At least one of the first support rod, the second support rod and the base is provided with a second guide portion that cooperates with the first guide portion to prevent the nut slider from rotating around the central axis of the screw and to guide the nut slider to slide back and forth in the axial direction of the screw. Each of the two slots is provided on opposite sides of the nut slider, with the slot openings facing each other. Each slot contains a push block. The adjacent ends of each push block and the nut slider are abutted by inclined surfaces that are parallel to each other and oblique to the axial direction of the screw. When the nut slider slides along the axial direction of the screw under the drive of the screw, the push blocks are driven by the mutual abutment of the inclined surfaces to move from the loosened position close to the screw to the tight position away from the screw.

3. The tube docking device for a window treatment of claim 2, wherein, One of the adjacent ends of the push block and the nut slider is provided with a hook and the other is provided with a hook groove. The hook part of the hook is hooked into the hook groove. The thickness of the hook part is adapted to the internal space of the hook groove in the thickness direction of the hook part. The opposite side walls of the hook groove in the thickness direction of the hook part are parallel to each other and oblique to the axial direction of the screw.

4. The tube docking device for a window treatment of claim 2, wherein, The drive assembly further includes an elastic element for driving the push block back to the loosened position when the nut slider slides on the screw in a second direction opposite to the first direction.

5. The tube docking device for a window treatment of claim 2, wherein, The first support rod and / or the second support rod are further provided with guide grooves for guiding the directional sliding of the push block, and the middle section of the push block forms a guide post that corresponds to and cooperates with the guide groove.

6. The tube docking device for a window treatment of claim 1, wherein, The driving component includes: A base with a centrally located shaft hole is positioned between the first and second support rods, with the base adjacent to the opposite ends of the first and second support rods, respectively inserted into corresponding positioning grooves on the first and second support rods; and A screw rod is inserted into the shaft hole of the base and is axially fixed relative to the base. The axial direction of the screw rod is perpendicular to the length direction of the first support rod and the second support rod. One end of the screw rod forms an operating part for driving the screw rod to rotate. The push block is screwed onto the screw rod. The opening direction of the slot is parallel to the axial direction of the screw rod and faces the push block. The push block is provided with a first guide portion arranged parallel to the central axis of the screw rod. At least one of the first support rod, the second support rod, and the base is provided with a second guide portion that cooperates with the first guide portion to prevent the push block from rotating around the central axis of the screw rod and to guide the push block to slide back and forth in the axial direction of the screw rod. The end of the push block is inserted into the slot and slides along the axial direction of the screw rod in a first direction under the drive of the screw rod, moving from the loosened position to the tight position.

7. A tube docking device for a window treatment as defined in claim 2 or 6, wherein, One end of the screw protrudes radially to form a large head. The inner end face of the large head, which is opposite to the screw in the axial direction, abuts against the base, while the outer end face abuts against the corresponding stop wall formed on the first support rod and / or the second support rod. The operating part is also provided in the middle of the outer end face of the large head. A through hole is provided on the stop wall to expose the operating part.

8. The tube docking device for a window treatment of claim 1, wherein, Both the first and second support rods have positioning posts and positioning holes on their opposite sides. The positioning post on one of the first and second support rods is inserted into the positioning hole on the other.

9. The tube docking device for a window treatment of claim 8, wherein, The first and second support rods are both composed of support rod units with the same structure. Each support rod unit is provided with a positioning post and a positioning hole, and the positioning posts and positioning holes on the support rod units are symmetrically arranged. During assembly, one of the support rod units is rotated 180 degrees relative to the other support rod unit and then the positioning posts of each unit are aligned with the positioning holes of the other unit and inserted.

10. The tube docking device for a window treatment of claim 1, wherein, The outer wall shapes of the opposite sides of the first and second support rods are adapted to the shapes of the corresponding inner walls of the first and second pipe fittings. Furthermore, the outer walls also have protrusions at the middle sections of the first and second support rods, which abut against the end faces of the first and second pipe fittings respectively, thereby limiting the depth of the insertion of the two ends of the first and second support rods into the first and second pipe fittings.

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