A punch-free installation device for installing curtains

Abstract

The present invention relates to a punch-free installation device for installing curtains, comprising a main rod and a telescopic rod, wherein one end of the telescopic rod is movably connected to the main rod, and the other end of the telescopic rod is connected to a punch-free installation assembly, and a locking piece for locking the telescopic rod is provided on the main rod. The present invention arranges the telescopic rod and the main rod to be movably adjustable, so that the entire installation device can be adapted to window frames of various sizes during installation, and the installation length can be adjusted by adjusting the length of the telescopic rod extending out of the main rod and locking and positioning by the locking piece. The invention has wide applicability and is more flexible in installation. In addition, mechanical telescopic adjustment and locking of the punch-free installation assembly can achieve quick installation without the need to punch holes or damage the wall.

Description

Technical Field

[0001] The invention relates to the technical field of curtain installation, and in particular to a punch-free installation device for installing curtains. Background Art

[0002] Curtains are widely used in homes, offices and other places, mainly for adjusting indoor light. Currently, rolling blinds, venetian blinds, honeycomb blinds, etc. are more commonly used. Generally, when installing, the curtains need to be fixed to the window frame with installation codes and screws. Since screw installation will produce screw holes on the window frame, the curtains need to be re-drilled when they are reinstalled or replaced, and cannot be installed in situ. This will inevitably leave multiple screw holes on the wall of the window frame, which will not only damage the wall but also affect the aesthetics. In addition, the punching installation will generate dust, which is inconvenient to clean and time-consuming and labor-intensive to install. In addition, when installing the curtains, it is generally necessary to first determine the size of the window frame and then select the appropriate curtains for installation. If the curtain size does not match the window frame size, it is necessary to re-purchase the curtains. The size of the curtains is determined after production and assembly, and it is difficult for a pair of curtains to match window frames of multiple sizes. When users purchase curtains, there will be problems with the size being difficult to grasp, and the installation flexibility is also poor. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a punch-free installation device for installing curtains, which does not require drilling, can quickly install curtains, and can adjust the installation length, adapt to window frames of various sizes, and has strong installation flexibility.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a punch-free installation device for installing curtains, comprising a main rod and a telescopic rod, one end of the telescopic rod is movably connected to the main rod, and the other end of the telescopic rod is connected to a punch-free installation assembly, and the main rod is provided with a locking piece for locking the telescopic rod.

[0005] Furthermore, the punch-free mounting assembly includes a mounting seat, a top block slidably connected in the mounting seat, and a self-locking unit for squeezing the top block, and the mounting seat is fixedly connected to the telescopic rod.

[0006] Furthermore, one end of the mounting seat is a closed end, and the other end is an open end. The self-locking unit includes a worm wheel, a worm, a lead screw and a lead screw nut. The worm wheel and the lead screw are integrally formed, the worm and the worm wheel thread cooperate, and the lead screw nut is screwed on the lead screw. The closed end of the mounting seat is provided with a through hole for the lead screw to extend into, and the end of the telescopic rod connected to the mounting seat is provided with a first arc groove, and the mounting seat is provided with a second arc groove opposite to the first arc groove, and the first arc groove and the second arc groove are assembled into a accommodating cavity for accommodating the worm.

[0007] Furthermore, the shape of the top block matches the shape of the inner cavity of the mounting seat, and a circular cavity for sleeve-connecting the screw rod and screw nut is opened inwardly on the top block, and the screw rod nut is provided with a square end surface matching the shape of the inner cavity of the mounting seat for squeezing the top block.

[0008] Furthermore, an elastic member is provided in the mounting seat, one end of which is sleeved with the screw nut and abuts against the square end face of the screw nut, and the other end of which extends into the circular cavity and abuts against the inner end face of the top block.

[0009] Furthermore, a helical rack is provided on the top of the telescopic rod, and a latching tooth matching the helical rack is provided on the locking member.

[0010] Furthermore, the helical racks are grouped in two and are symmetrically arranged along the length direction of the telescopic rod, and avoidance grooves are formed between the helical racks.

[0011] Furthermore, the locking piece is inserted into the top wall of the main rod along the main rod port and fixed by a fastener. The bottom of the locking piece is bent with a hook that engages with the top wall of the main rod. A limiting rib is provided on the top wall of the main rod along the length direction of the main rod, and a limiting groove that cooperates with the limiting rib is provided on the locking piece.

[0012] Furthermore, the latching teeth are arranged at the bottom of the locking member, and a switch portion is obliquely extended upward from the bottom of the locking member near the latching teeth end.

[0013] Furthermore, the main rod is provided with at least one slot extending along the length direction of the main rod to both ends.

[0014] Compared with the prior art, the advantages of the present invention are as follows: the present invention arranges the telescopic rod and the main rod to be movable and adjustable, so that the entire installation device can be adapted to window frames of various sizes during installation, and the installation length can be adjusted by adjusting the length of the telescopic rod extending out of the main rod and locking and positioning it through a locking piece. It has a wide range of applicability and is more flexible in installation. In addition, through the mechanical telescopic adjustment and locking of the punch-free installation component, quick installation can be achieved without the need to drill holes or damage the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 An exploded view of the present invention;

[0017] Figure 3 An exploded view of the punch-free installation assembly of the present invention;

[0018] Figure 4 It is an exploded schematic diagram of the telescopic rod and the punch-free installation assembly of the present invention;

[0019] Figure 5This is a structural schematic diagram of a punch-free installation assembly of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the locking member of the present invention;

[0021] Figure 7 It is a side view of the main rod of the present invention;

[0022] Figure 8 A schematic diagram of the present invention being assembled with a decorative panel;

[0023] Fig. 9 A schematic diagram of the present invention being assembled with a curtain;

[0024] As shown in the figure, 1 main rod, 1.1 first side, 1.2 second side, 1.3 top wall, 1.4 bottom wall, 1.5 installation space, 1.6 limiting rib, 1.7 first through slot, 1.8 second through slot, 1.9 opening I, 1.10 first threading slot, 1.11 second threading slot, 1.12 first card slot, 1.13 second card slot, 1.14 installation slot, 1.15 opening II, 1.16 first bending part, 1.17 second bending part, 1.18 track slot, 2 telescopic rod, 2.1 first arc slot, 2.2 helical rack, 2.3 avoidance groove, 2.4 concave cavity, 3 locking piece, 3.1 latch tooth, 3.2 hook, 3.3 limit groove, 3.4 switch part, 3.5 mounting hole, 4 mounting seat, 4.1 through hole, 4.2 second arc groove, 4.3 guide groove, 4.4 anti-drop block, 5 top block, 5.1 circular cavity, 5.2 guide block, 6 worm, 6.1 second annular step surface, 7 worm wheel, 8 screw rod, 9 screw rod nut, 9.1 square end surface, 10 accommodating cavity, 10.1 first annular step surface, 11 elastic piece, 12 top cover, 13 decorative plate, 14 connecting piece. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figure 1-7 As shown, a punch-free installation device for installing curtains includes a main rod 1 and a telescopic rod 2, one end of the telescopic rod 2 is movably connected to the main rod 1, and the other end of the telescopic rod 2 is connected to a punch-free installation assembly, and a locking piece 3 for locking the telescopic rod 2 is provided on the main rod 1.

[0027] The main rod 1 includes a first side surface 1.1, a second side surface 1.2, and a top wall 1.3 and a bottom wall 1.4 connecting the first side surface 1.1 and the second side surface 1.2. The first side surface 1.1, the second side surface 1.2, the top wall 1.3, and the bottom wall 1.4 form an installation space 1.5 that can be movably connected to the telescopic rod 2. One end of the telescopic rod 2 extends into the installation space 1.5 of the main rod 1 and can slide along the length direction of the main rod 1. The shape of the telescopic rod 2 matches the shape of the installation space 1.5. The locking member 3 is plugged into the top wall 1.3 of the main rod 1 along the end of the main rod 1 and is fixed by a fastener. The locking member 3 is provided with a mounting hole 3.5 for screwing the fastener. The port on the main rod 1 where the locking member 3 is plugged is the entrance for the telescopic rod 2 to extend into the installation space 1.5 The bottom of the locking piece 3 is bent to have a hook 3.2 that is engaged with the top wall 1.3 of the main rod 1. The hook 3.2 structure is set and fixed with a fastener, so that the locking piece 3 is firmly fixed on the main rod 1, which can effectively lock the telescopic rod 2 and prevent the telescopic rod 2 from freely extending and retracting. A limiting rib 1.6 is provided on the top wall 1.3 of the main rod 1 along the length direction of the main rod 1, and a limiting groove 3.3 that cooperates with the limiting rib 1.6 is provided on the locking piece 3. The cooperation between the limiting groove 3.3 and the limiting rib 1.6 makes it easier to pre-position the locking piece 3 when connecting it to the main rod 1, and on the other hand, it can prevent the locking piece 3 from moving left and right, thereby improving the installation effect. Preferably, the number of the limiting ribs 1.6 is two, and the number of the limiting grooves 3.3 is the same as the number of the limiting ribs 1.6. The top of the telescopic rod 2 is provided with a helical rack 2.2, and the locking member 3 is provided with a latch tooth 3.1 that cooperates with the helical rack 2.2. The latch tooth 3.1 meshes with the helical rack 2.2. When the telescopic rod 2 is pulled out of the installation space 1.5 of the main rod 1 under the action of an external force, the latch tooth 3.1 does not play a locking role, and the telescopic rod 2 can be easily pulled out; when the telescopic rod 2 is pushed into the installation space 1.5 of the main rod 1 under the action of an external force, the latch tooth 3.1 plays a reverse locking role, and the telescopic rod 2 cannot be reversely retracted into the installation space 1.5. The spacing between each helical tooth on the helical rack 2.2 is equal. The cooperation between the latch tooth 3.1 and the helical rack 2.2 not only plays a locking role, but also makes the telescopic length of the telescopic rod 2 easier to adjust, and the telescopic length can be adjusted more easily. The length of each helical tooth position moved by the rod 2 is equal, and the telescopic length adjustment is more precise and controllable. Preferably, the helical racks 2.2 are two in a group and are symmetrically arranged along the length direction of the telescopic rod 2. The latching teeth 3.1 on the locking member 3 correspond to the helical racks 2.2 and are symmetrically arranged on the locking member 3. The two groups of latching teeth 3.1 cooperate with the helical racks 2.2 to make the telescopic rod 2 more stable and the locking more secure. An avoidance groove 2.3 is formed between the two helical racks 2.2, and the avoidance groove 2.3 is used to avoid the hook 3.2 on the locking member 3. The latching teeth 3.1 are arranged at the bottom of the locking member 3, and a switch portion 3.4 is extended obliquely upward near the latching teeth end at the bottom of the locking member 3. The switch portion 3.The setting of 4 facilitates people to manually unlock the latch 3.1 to reversely lock the telescopic rod 2. When the telescopic rod 2 extends out of the main rod 1 too long and needs to be retracted in the reverse direction, people can pull the switch part 3.4 upwards to cause the bottom of the locking member 3 to elastically deform, and the latch 3.1 disengages from the helical rack 2.2 to unlock the telescopic rod 2, so that the telescopic rod 2 is reversely retracted into the main rod 1 to shorten the overall length. In addition, the two limit grooves 3.3 on the aforementioned locking member 3 are connected to each other near the latch end, thereby separating the bottom with the hook 3.2 from the bottom with the latch 3.1. When people pull the switch part 3.4, only the bottom with the latch 3.1 is pulled to deform, so that the latch 3.1 unlocks the helical rack 2.2, and the bottom with the latch hook 3.2 is not pulled to deform, thereby avoiding affecting the latch connection between the latch hook 3.2 and the top wall 1.3 of the main rod 1.

[0028] like Figure 3-5As shown, the punch-free installation assembly includes a mounting seat 4, a top block 5 slidably connected in the mounting seat 4, and a self-locking unit for squeezing the top block 5. The mounting seat 4 is fixedly connected to the telescopic rod 2, one end of the mounting seat 4 is a closed end, and the other end is an open end. The self-locking unit includes a worm wheel 7, a worm 6, a screw 8 and a screw nut 9. The worm wheel 7 and the screw 8 are integrally formed, the worm 6 and the worm wheel 7 are threadedly matched, and the screw nut 9 is screwed on the screw 8. The closed end of the mounting seat 4 is provided with a through hole 4.1 for the screw 8 to extend into, and the end of the telescopic rod 2 connected to the mounting seat 4 is provided with a first arc groove 2. 1, the mounting seat 4 is provided with a second arc groove 4.2 opposite to the first arc groove 2.1, the first arc groove 2.1 and the second arc groove 4.2 are assembled into a receiving cavity 10 for accommodating the worm 6, the receiving cavity 10 is vertically distributed with the inner cavity of the mounting seat 4, and the worm 6 is accommodated by the structure of the first arc groove 2.1 and the second arc groove 4.2, so that the parts are convenient to disassemble and replace, and the end of the telescopic rod 2 connected to the mounting seat 4 is also concave with a concave cavity 2.4 for avoiding the worm wheel 7, the concave cavity 2.4 is connected with the receiving cavity 10, and both ends of the receiving cavity 10 are connected with the outside, so that the external driving components can be conveniently extended into the receiving cavity. The receiving cavity 10 is used to screw the worm 6, thereby achieving the purpose of self-locking. Two first annular step surfaces 10.1 are symmetrically arranged in the receiving cavity 10. The worm 6 is provided with a second annular step surface 6.1 that matches the first annular step surface 10.1. The first annular step surface 10.1 and the second annular step surface 6.1 cooperate with each other to prevent the worm 6 from falling out of the receiving cavity 10 during rotation, and to prevent the worm 6 from being displaced along its own length direction, thereby protecting the worm wheel 7 and the worm 6 and preventing the worm wheel 7 and the worm 6 from being damaged. The shape of the top block 5 matches the shape of the inner cavity of the mounting seat 4, and a sleeve thread is provided inwardly on the top block 5. The round cavity 5.1 of the rod 8 and the screw nut 9, the screw nut 9 is provided with a square end face 9.1 which matches the shape of the inner cavity of the mounting seat 4 and is used to push the ejector block 5. The worm 6 is rotated by an external driving component, the worm 6 drives the worm wheel 7 to rotate, the worm wheel 7 drives the screw 8 to rotate synchronously, the screw 8 drives the screw nut 9 to move along the length direction of the screw 8, the square end face 9.1 on the screw nut 9 pushes the ejector block 5 until the ejector block 5 is locked, and the ejector block 5 is pressed tightly against the wall. The cooperation of the worm wheel 7, the worm 6 and the screw 8 converts the axial rotation into radial rotation, and the ejector block 5 is locked by the mechanical force of the self-locking unit, which is convenient for installation and adjustment.

[0029] Furthermore, an elastic member 11 is further provided in the mounting seat 4, one end of the elastic member 11 is sleeved with the screw nut 9 and abuts against the square end face 9.1 of the screw nut 9, and the other end extends into the circular cavity 5.1 and abuts against the inner end face of the top block 5. The setting of the elastic member 11, when pre-installed, the elastic member 11 will apply elastic force to the top block 5, so that the top block 5 is pre-positioned on the wall surface, and when the external driving component rotates the worm 6, the worm 6 drives the worm wheel 7 to rotate, the worm wheel 7 drives the screw 8 to rotate synchronously, and the screw 8 drives the screw nut The nut 9 moves along the length direction of the screw rod 8. First, the square end face 9.1 of the screw nut 9 pushes the elastic member 11, and the elastic member 11 pushes the top block 5. As the elastic member 11 is squeezed, the elastic force on the top block 5 becomes larger and larger, until the elastic member 11 is completely pushed into the circular cavity 5.1, the square end face 9.1 of the screw nut 9 is pressed against the top block 5, and the top block 5 is completely locked. During the pre-installation process, the elastic member 11 applies elastic force to the top block 5 so that the top block 5 can be pre-positioned against the wall, making the installation positioning more convenient and accurate.

[0030] Preferably, the elastic member 11 is a spring or a group of repelling magnets.

[0031] Guide blocks 5.2 are symmetrically provided on the two outer side walls of the top block 5, and guide grooves 4.3 cooperating with the guide blocks 5.2 are provided on the two inner side walls of the mounting seat 4. The ends of the guide grooves 4.3 are provided with anti-slip blocks 4.4 for preventing the guide blocks 5.2 from slipping. The anti-slip blocks 4.4 are flush with the open ends of the mounting seat 4. The guide blocks 5.2 are provided with inclined guide surfaces. When the top block 5 is assembled into the mounting seat 4, it can be smoothly pushed into the mounting seat 4 along the inclined guide surfaces. Moreover, under the elastic force of the elastic member 11, when the top block 5 slides in the reverse direction, the anti-slip blocks 4.4 block the guide blocks 5.2 from sliding out of the guide grooves 4.3 to prevent the top block 5 from detaching from the mounting seat 4. One end of the top block 5 extends out of the mounting seat 4 for being installed on the wall, and the other end of the top block 5 always slides within the inner cavity of the mounting seat 4. The sliding distance of the guide block 5.2 in the guide grooves 4.3 is the telescopic displacement of the top block 5.

[0032] Preferably, the outer end surface of the top block 5 is connected with a top cover 12, which can increase the friction between the top block 5 and the wall surface to avoid slipping, so that the top block 5 can be more stably pressed against the wall surface and have better contact with the wall surface. In addition, it also has an aesthetic effect.

[0033] like Figure 7As shown, a first through groove 1.7 and a second through groove 1.8 are symmetrically arranged on the first side surface 1.1 and the second side surface 1.2 of the main rod 1 near the bottom wall 1.4. The first through groove 1.7 and the second through groove 1.8 are arranged along the length direction of the main rod 1. The first through groove 1.7 and the second through groove 1.8 are used to install LED light strips to play the role of lighting decoration. Ultraviolet germicidal lamps can also be installed for sterilization and disinfection. Infrared sensing devices can also be installed for anti-theft. Mosquito repellent devices can also be installed to increase the additional functions of the curtains. The bottoms of the first through groove 1.7 and the second through groove 1.8 are both provided with openings Ⅰ1.9 connected to the outside to allow light to easily penetrate.

[0034] A first wire threading groove 1.10 and a second wire threading groove 1.11 are symmetrically arranged on the first side surface 1.1 and the second side surface 1.2 of the main pole 1 near the top wall 1.3. The first wire threading groove 1.10 and the second wire threading groove 1.11 are both arranged along the length direction of the main pole 1. The arrangement of the first wire threading groove 1.10 and the second wire threading groove 1.11 can be used for routing wires when connected to some electrical equipment to avoid the wires being exposed, making the overall installation neater and cleaner. In addition, the first wire threading groove 1.10 and the second wire threading groove 1.11 run through both ends of the main pole 1, and the two ends of the first wire threading groove 1.10 and the second wire threading groove 1.11 can also be used to plug in the connector 14 to connect the curtains.

[0035] The main rod 1 is provided with at least one slot extending along the length direction of the main rod 1 to both ends, for clamping the decorative plate 13. Figure 8 As shown, the parts for installing the curtain can be shielded to keep the overall appearance beautiful and neat. Preferably, it includes a first card slot 1.12 and a second card slot 1.13. The first card slot 1.12 is located above the first threading slot 1.10, and the second card slot 1.13 is located above the first through slot 1.7. In addition, corresponding first card slots and second card slots are also provided on the mounting seat 4 for clamping the decorative panel 13.

[0036] On the second side surface 1.2 of the main rod 1, an installation groove 1.14 is arranged between the second through groove 1.8 and the second threading groove 1.11, and an opening II 1.15 is arranged on the side of the installation groove 1.14. The setting of the installation groove 1.14 can fix the lower end of the double-layer soft gauze curtain when installing the soft gauze curtain. The setting of the opening II 1.15 is to allow the soft gauze curtain to pass through. When the rolling curtain is installed, the lower end of the rolling curtain hangs down and does not need to be connected to the installation groove 1.14. Therefore, the setting of the installation groove 1.14 enhances the versatility of the main rod 1.

[0037] The upper long side of the first side surface 1.1 of the main rod 1 is provided with a first bending portion 1.16 bent inwardly, and the upper long side of the second side surface 1.2 is provided with a second bending portion 1.17 folded inwardly. The first bending portion 1.16, the first side surface 1.1, the top wall 1.3, the second side surface 1.2, and the second bending portion 1.17 form a track groove 1.18. The setting of the track groove 1.18, in conjunction with the above-mentioned first threading groove 1.10 and the second threading groove 1.11, can better plug the connector 14, so as to facilitate the connection of curtains such as blinds, roller blinds, and double-layer soft gauze curtains.

[0038] When assembling the curtain, the connectors 14 can be plugged into the two ends of the installation device, and curtains such as blinds, roller blinds, double-layer soft gauze curtains, etc. can be connected through the connectors 14. Fig. 9 As shown, a schematic diagram of the installation device connecting the roller blind via a connecting member 14 is shown, which is convenient for assembly.

[0039] When the installation device is used, the length of the telescopic rod 2 extending out of the main rod 1 is adjusted according to the size of the window frame to adapt to the size of the window frame, determine the pre-installation length of the installation device, and then pre-position the installation device on the window frame. At this time, the top block 5 is pre-positioned on the wall under the elastic force of the elastic member 11, and the driving component is inserted into the accommodating cavity 10 to rotate the worm 6, and the worm 6 drives the worm wheel 7 to rotate, and the worm wheel 7 drives the screw rod 8 to rotate synchronously. The screw nut 9 on the screw rod 8 is limited because its square end face 9.1 matches the shape of the inner cavity of the mounting seat 4, and the screw nut 9 cannot rotate synchronously with the screw rod 8. Therefore, the rotation of the screw rod 8 will squeeze and push the screw nut 9 to move along the length direction of the screw rod 8. The square end face 9.1 of the screw nut 9. The elastic member 11 is pushed and squeezed toward the top block 5 until the elastic member 11 is completely pushed into the circular cavity 5.1, and the square end surface 9.1 of the screw nut 9 is pressed against the top block 5, thereby locking the top block 5 to prevent the top block 5 from sliding in the opposite direction, thereby supporting the installation device on the window frame, realizing punch-free installation without damaging the wall. When the curtain needs to be replaced or removed, the driving component is inserted into the accommodating cavity 10 to reversely screw the worm 6 to rotate, and the worm 6 drives the worm wheel 7 to rotate, and the worm wheel 7 drives the screw 8 to rotate synchronously, and the screw nut 9 on the screw 8 moves away from the top block 5, the elastic member 11 is released, the elastic force is reduced, and the top block 5 is unlocked, so that the top block 5 can be squeezed to move into the mounting seat 4, so that the top block 5 is separated from the wall, and the installation device can be easily removed.

[0040] The present invention provides that the telescopic rod 2 and the main rod 1 are movable and adjustable, so that the entire installation device can be adapted to window frames of various sizes during installation. By adjusting the length of the telescopic rod 2 extending out of the main rod 1 and locking and positioning it through the locking member 3, the installation length can be adjusted. The applicability is wide and the installation is more flexible. When the overall length of the installation device needs to be extended, it is only necessary to pull the telescopic rod 2 outwards. After the external force is removed, the overall length of the installation device is fixed. When the overall length of the installation device needs to be shortened, it is necessary to first pull up the switch portion 3.4 on the locking member 3 so that the latching teeth 3.1 disengages from the helical rack 2.2 to unlock the telescopic rod 2, and then pushes the telescopic rod 2 toward the main rod 1, so that the telescopic rod 2 retracts into the main rod 1. After the external force is removed, the latching tooth 3.1 engages with the helical rack 2.2 to lock the telescopic rod 2 from extending. The overall length of the installation device is adjusted, and the operation is convenient. In addition, the present invention uses the mechanical force between the worm gear 7, the worm 6, the screw 8, and the screw nut 9 to squeeze and push the top block 5, and firmly presses the top block 5 against the wall, thereby supporting the installation device on the window frame, realizing fast punch-free installation, which is easy to operate and does not require damaging the wall.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A punch-free installation device for installing curtains, characterized in that: It comprises a main rod (1) and a telescopic rod (2), one end of the telescopic rod (2) is movably connected to the main rod (1), the other end of the telescopic rod (2) is connected to a punch-free installation component, and the main rod (1) is provided with a locking piece (3) for locking the telescopic rod (2); The punch-free installation assembly comprises a mounting seat (4), a top block (5) slidably connected in the mounting seat (4), and a self-locking unit for squeezing the top block (5); the mounting seat (4) is fixedly connected to the telescopic rod (2); One end of the mounting seat (4) is a closed end, and the other end is an open end. The self-locking unit comprises a worm wheel (7), a worm (6), a screw (8) and a screw nut (9). The worm wheel (7) and the screw (8) are integrally formed. The worm (6) and the worm wheel (7) are threadedly matched. The screw nut (9) is screwed onto the screw (8). The closed end of the mounting seat (4) is provided with a through hole (4.1) for the screw (8) to extend into. The end of the telescopic rod (2) connected to the mounting seat (4) is provided with a first arc groove (2.1). The mounting seat (4) is provided with a second arc groove (4.2) opposite to the first arc groove (2.1). The first arc groove (2.1) and the second arc groove (4.2) are assembled into a receiving cavity (10) for accommodating the worm (6). Both ends of the accommodating cavity (10) are in communication with the outside.

2. A punch-free installation device for installing curtains according to claim 1, characterized in that: The shape of the top block (5) matches the shape of the inner cavity of the mounting seat (4); a circular cavity (5.1) for receiving a screw rod (8) and a screw nut (9) is provided inwardly on the top block (5); and a square end surface (9.1) matching the shape of the inner cavity of the mounting seat (4) and used for squeezing the top block (5) is provided on the screw nut (9).

3. A punch-free installation device for installing curtains according to claim 2, characterized in that: An elastic member (11) is also provided in the mounting seat (4), one end of the elastic member (11) being sleeved with the screw nut (9) and abutting against the square end surface (9.1) of the screw nut (9), and the other end of the elastic member (11) extending into the circular cavity (5.1) and abutting against the inner end surface of the top block (5).

4. A punch-free installation device for installing curtains according to claim 1, characterized in that: A bevel gear rack (2.2) is provided on the top of the telescopic rod (2), and a latching tooth (3.1) matching with the bevel gear rack (2.2) is provided on the locking member (3).

5. A punch-free installation device for installing curtains according to claim 4, characterized in that: The helical racks (2.2) are grouped in two and are disposed symmetrically along the length direction of the telescopic rod (2), with avoidance grooves (2.3) formed between the helical racks (2.2).

6. A punch-free installation device for installing curtains according to claim 4, characterized in that: The locking member (3) is inserted into the top wall (1.3) of the main rod (1) along the end of the main rod (1) and fixed by a fastener; a hook (3.2) is bent at the bottom of the locking member (3) for engaging the top wall (1.3) of the main rod (1); a limiting rib (1.6) is provided on the top wall (1.3) of the main rod (1) along the length direction of the main rod (1); and a limiting groove (3.3) is provided on the locking member (3) for cooperating with the limiting rib (1.6).

7. A punch-free installation device for curtains according to claim 4, characterized in that: The latching tooth (3.1) is arranged at the bottom of the locking member (3), and a switch portion (3.4) is provided at the bottom of the locking member (3) near the end of the latching tooth and extending obliquely upward.

8. The punch-free installation device for curtains according to claim 1, characterized in that: The main rod (1) is provided with at least one slot extending along the length direction of the main rod (1) to both ends.

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