Curtain and upper beam punch-free installation device

Abstract

The utility model provides a curtain and an upper beam punch-free installation device thereof, the device is used to fix the upper beam of the curtain to the top of the window body, including a mounting seat with one end fixed to the end of the upper beam, a screw rod axially arranged parallel to the length direction of the upper beam and axially movable and assembled on the mounting seat, a pressing plate assembled on one end of the screw rod extending outside the upper beam and used to press against the wall on one side of the window body, and an adjustment mechanism assembled on the mounting seat for driving the screw rod to move axially, a stop structure for preventing the screw rod from rotating circumferentially is arranged between the screw rod and the mounting seat; the adjustment mechanism includes: a driving gear pivotally arranged on the mounting seat, a driving part for driving the driving gear to rotate and exposed outside the upper beam is arranged on the gear shaft of the driving gear; and a driven gear pivotally arranged on the mounting seat and meshing with the driving gear, a screw hole is opened at the wheel center of the driven gear, and the screw rod is also screwed correspondingly to the screw hole. This embodiment has a simple structure and is easy to use.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of curtain accessories, and in particular to a curtain and an upper beam punch-free installation device thereof. Background Art

[0002] The curtain upper beam punch-free installation device has gradually become popular because of its convenience in quickly realizing the installation and positioning operation of the curtain upper beam without punching holes.

[0003] An existing installation device for the upper beam of a curtain without punching mainly comprises: a mounting seat with one end fixed to the end of the upper beam and having a cavity inside, a linkage member with a worm wheel part and a screw rod part at both ends respectively and one end of the worm wheel part extending into the cavity of the mounting seat, a worm assembled in the mounting seat and meshing with the worm wheel part of the linkage member to drive the linkage member to rotate, an adjustment top block with one end extending into the mounting seat, a lock member screwed on the screw rod part of the linkage member to limit the axial movement stroke of the adjustment top block toward the inside of the mounting seat, and an elastic member with two ends respectively abutting against the driving member and the adjustment top block, and the adjustment top block is pushed outward and pressed against the wall by the elastic member. One end of the worm is exposed from the mounting seat to facilitate the operation of the worm. When used specifically for assembling the upper beam, one end of the mounting seat of the device is fixed to the end of the upper beam, and then the adjusting top block is pushed inward to move it slightly inward so that the upper beam can be installed in the window frame. Under the action of the elastic member, the adjusting top block is pressed against the mounting wall surfaces on both sides of the window frame to achieve pre-installation, and then the worker drives the worm to drive the linkage member to rotate, so that the locking member moves axially toward the adjusting top block to press against the adjusting top block to prevent the adjusting top block from elastically shrinking, thereby realizing punch-free installation and being compatible with window frames of different widths within a small range.

[0004] However, the inventors found during the specific implementation that the punch-free installation device has a relatively complex structure, relatively more parts, and is relatively troublesome to manufacture; in addition, the adjustable top block is extended out and pressed against the wall by the pushing action of the elastic member and then locked in position by the locking member. When it is to be disassembled, after the locking member is adjusted to the unlocked position, it is relatively difficult to overcome the elastic force of the elastic member to push the adjustable top block to retract. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a curtain upper beam punch-free installation device with a simple structure and easy operation.

[0006] The technical problem to be solved by the embodiments of the utility model is to provide a curtain with a simple installation structure and easy operation.

[0007] In order to solve the above technical problems, the embodiment of the utility model provides the following technical solutions: a curtain upper beam punch-free installation device, comprising:

[0008] A mounting base having one end fixed to the end of the upper beam;

[0009] A screw rod is axially arranged parallel to the length direction of the upper beam and axially movable and assembled on the mounting seat, and a rotation-stopping structure is arranged between the screw rod and the mounting seat to prevent the screw rod from rotating in the circumferential direction;

[0010] A pressing plate assembled at one end of the screw rod away from the upper beam and used for pressing against the wall on one side of the window body for positioning; and

[0011] An adjusting mechanism assembled on the mounting seat for driving the screw to move axially, the adjusting mechanism comprising:

[0012] A driving gear pivotally mounted on the mounting seat, wherein a driving portion for driving the driving gear to rotate and exposed outside the upper beam is disposed on the gear shaft of the driving gear; and

[0013] A driven gear is pivotally mounted on the mounting seat and meshed with the driving gear. A screw hole is formed at the wheel center of the driven gear. The screw rod is screwed correspondingly to the screw hole.

[0014] Furthermore, the central axes of the driving gear and the driven gear intersect at a predetermined non-zero angle, and both the driving gear and the driven gear are bevel gears or the driving gear is a helical gear and the driven gear is an end gear meshing with the helical gear.

[0015] Furthermore, the mounting base is a box body with a accommodating cavity inside, one end of the box body protrudes out a plug-in portion for correspondingly plugging and positioning with the end of the upper beam, and a through hole is opened in the middle of the end wall of the other end, the adjustment mechanism is assembled in the accommodating cavity of the box body, one end of the screw rod extends to the outside of the box body through the through hole, and a side surface of the box body is also provided with a through hole for exposing the driving portion.

[0016] Furthermore, the box body is composed of a box body with the accommodating cavity formed inside and an opening provided at one end, and a cover plate detachably assembled at the opening to cover the opening.

[0017] Furthermore, the through hole is arranged in the middle part of the cover plate, and the inner side surface of the cover plate is also formed with a pressing protrusion protruding around the through hole toward the inside of the box body, and a positioning ring is formed in the middle part of the box wall on the side of the box body facing the cover plate, and the opposite ends of the driven gear are axially positioned by the corresponding pressure of the pressing protrusion on the cover plate and the positioning ring.

[0018] Furthermore, the inner hole of the positioning ring also corresponds to and penetrates the box wall of the box body.

[0019] Furthermore, the anti-rotation structure includes a positioning cam arranged on the hole wall of the through hole and extending in the axial direction, and a positioning keyway arranged on the outer side surface of the screw and extending in the axial direction, and the positioning cam is correspondingly inserted into the positioning keyway.

[0020] Furthermore, a side wall of the accommodating cavity and the inner side surface of the cover plate are respectively correspondingly protruded to form an axle seat, and the two opposite sides of the axle seats are respectively recessed to form positioning half grooves. When the cover plate is fixed to the box body, the positioning half grooves of the two axle seats are combined to form a pivot hole for the gear shaft to pivot. The through hole is opened on the side wall of the accommodating cavity where the axle seat is formed and is opposite to the pivot hole; the outer wall of the middle section of the gear shaft is correspondingly recessed to form a positioning ring groove, and a positioning convex ring is correspondingly protruded on the wall of the pivot hole. When the gear shaft is assembled to the pivot hole, the positioning ring groove and the positioning convex ring are correspondingly engaged to position the gear shaft in the axial direction.

[0021] Furthermore, the pressure plate protrudes toward the middle of one side of the screw rod to form a pivot seat and an anti-slip pad is provided on the other side. The two opposite side surfaces of the pivot seat each protrude to form a pivot convex portion. The end surface of one end of the screw rod extending out of the upper beam has two pivot convex pieces protruding alternately, and each pivot convex piece is also provided with a pivot recess. The screw rod is pivotally connected to the pivot seat with the two pivot convex pieces respectively located on the opposite sides of the pivot seat and the pivot recess and the pivot convex portion cooperate with each other.

[0022] On the other hand, in order to solve the above-mentioned further technical problems, the embodiment of the utility model provides the following technical solutions: a curtain, comprising an upper beam and an upper beam punching-free installation device assembled on at least one end of the upper beam, wherein the upper beam punching-free installation device is a curtain upper beam punching-free installation device as described in any one of the above items.

[0023] After adopting the above technical scheme, the embodiment of the utility model has at least the following beneficial effects: the embodiment of the utility model adopts the active gear and the driven gear to mesh to form an adjustment mechanism, and the driven gear is then connected to the screw with a pressure plate at one end by a screw hole opened at the wheel center, so that by operating the driving part provided at one end of the gear shaft of the active gear and exposed from the upper beam, the screw can be driven to rotate and move axially to extend outward relative to the end surface of the upper beam, and then the pressure plate assembled at the end of the screw extending from the upper beam is pressed against the corresponding wall to fix the upper beam, and when the upper beam needs to be disassembled, it is only necessary to operate the driving part in the reverse direction, so that the screw can be retracted and moved in the reverse direction, and the pressure plate is separated from the wall, and the upper beam can be removed. The overall structure of the upper beam punch-free installation device provided by the utility model is simple, and there is no need for the elastic member to provide pressure. In actual application, the operation of disassembling and assembling the upper beam is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a schematic diagram of an optional embodiment of the punch-free installation device for the upper beam of a curtain and the split structure of the upper beam.

[0025] Figure 2 The utility model is a schematic diagram of an optional embodiment of the curtain upper beam punch-free installation device and the assembly structure of the upper beam.

[0026] Figure 3 The utility model is a schematic diagram of an optional embodiment of the punch-free installation device for the upper beam of a curtain and the cross-sectional structure of the upper beam.

[0027] Figure 4 This is a structural schematic diagram of the box body of an optional embodiment of the curtain upper beam punch-free installation device of the utility model.

[0028] Figure 5 It is a schematic diagram of another optional embodiment of the punch-free installation device for the upper beam of a curtain of the utility model and the split structure of the upper beam.

[0029] Figure 6 The present invention is a schematic diagram of another optional embodiment of the punch-free installation device for the upper beam of a curtain and the cross-sectional structure of the upper beam.

[0030] Figure 7 The utility model is a schematic diagram of the split structure of the screw rod and the pressure plate of an optional embodiment of the curtain upper beam punch-free installation device.

[0031] Figure 8 The present invention is a schematic cross-sectional structural diagram of an optional embodiment of the utility model curtain upper beam punch-free installation device. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict.

[0033] like Figure 1-Figure 8 As shown, an optional embodiment of the utility model provides a curtain upper beam punch-free installation device A, comprising:

[0034] A mounting base 1 having one end fixed to the end of the upper beam B;

[0035] A screw rod 3 is axially arranged parallel to the length direction of the upper beam B and can be axially movably assembled on the mounting seat 1. A rotation-stopping structure 4 is arranged between the screw rod 3 and the mounting seat 1 to prevent the screw rod 3 from circumferential rotation;

[0036] A pressing plate 5 assembled at one end of the screw rod 3 away from the upper beam B and used for pressing against the wall on one side of the window body; and

[0037] An adjusting mechanism 7 assembled on the mounting seat 1 for driving the screw rod 3 to move axially, the adjusting mechanism 7 comprises:

[0038] A driving gear 70 pivotally mounted on the mounting seat, wherein a driving portion for driving the driving gear 70 to rotate and exposed to the outside of the upper beam B is disposed on a gear shaft 701 of the driving gear 70; and

[0039] A driven gear 72 is pivotally mounted on the mounting seat 1 and meshed with the driving gear 70 . A screw hole 721 is formed at the center of the driven gear 72 . The screw rod 3 is screwed to the screw hole 721 .

[0040] The embodiment of the utility model adopts the meshing of the driving gear 70 and the driven gear 72 to form the adjustment mechanism 7, and the driven gear 72 is then threadedly connected with the screw rod 3 with a pressure plate 5 at one end through the screw hole 721 opened at the wheel center, so that by operating the driving part 701 disposed at one end of the gear shaft 701 of the driving gear 70 and exposed from the upper beam B, the screw rod 3 can be driven to rotate and move axially to extend outward relative to the end surface of the upper beam B, and then the pressure plate 5 assembled at the end of the screw rod 3 extending from the upper beam B is pressed against the corresponding wall to fix the upper beam B, and when the upper beam B needs to be disassembled, it is only necessary to reversely operate the driving part 701, so that the screw rod 3 can be retracted and moved in the reverse direction, and the pressure plate 5 is also separated from the wall, and the upper beam B can be removed. The upper beam punch-free installation device provided by the utility model has a simple overall structure, and does not need to be provided with a pressure by an elastic member. In actual application, the operation of disassembling and assembling the upper beam B is very convenient.

[0041] In a specific implementation, in order to facilitate the rotation of the driving gear 70, the driving part 703 can be implemented in many ways, such as an operating hole, an operating handle, etc. Figure 1-Figure 5 In the illustrated embodiment, the driving portion 703 is a hexagonal hole for inserting a hexagonal wrench.

[0042] In an optional embodiment of the present invention, the central axes of the driving gear 70 and the driven gear 72 intersect at a predetermined non-zero angle, and the driving gear 70 and the driven gear 72 are both bevel gears (such as Figures 1 to 4 ) or the driving gear 70 is a helical gear and the driven gear 72 is an end face gear meshing with the helical gear (such as Figures 5 to 8). In this embodiment, by using the mutual meshing of two bevel gears or the mutual meshing of the helical gear and the end gear, the transmission of two gears whose central axes intersect at a predetermined non-zero angle can be effectively realized, and the space occupied is smaller. In a specific implementation, it is preferred that the central axes of the two driving gears 70 and the driven gear 72 intersect at 90 degrees.

[0043] In an optional embodiment of the present invention, Figures 1 to 8 The mounting seat 1 is a box body with an accommodating cavity 10 inside. One end of the box body protrudes out a plug-in portion 12 for correspondingly plugging and positioning with the end of the upper beam B, and a through hole 13 is provided in the middle of the end wall of the other end. The adjustment mechanism 7 is assembled in the accommodating cavity 10 of the box body 1. One end of the screw rod 3 extends to the outside of the box body 1 through the through hole 13. A through hole 14 is also provided on one side of the box body 1 for exposing the driving portion 701. In this embodiment, the mounting seat 1 adopts a box body with an accommodating cavity 10 inside, and the box body 1 can be used to effectively protect the mutually matching parts of the adjustment mechanism 7 and the screw rod 3 inside it, so as to prevent foreign objects from falling on the matching parts between relatively movable components and affecting the smoothness of transmission.

[0044] In an optional embodiment of the present invention, Figures 1 to 6 The box body 1 is composed of a box body 15 that forms the accommodating cavity 10 and is provided with an opening 151 at one end, and a cover plate 16 that is detachably assembled at the opening 151 to cover the opening 151. In this embodiment, the box body 1 is formed by combining the box body 15 and the cover plate 16, so that the adjustment mechanism 7 can be easily loaded into the accommodating cavity 10 through the opening 151, and the cover plate 16 covers the opening 151 to improve the protection performance.

[0045] In an optional embodiment of the present invention, Figures 1 to 6 , the perforation 13 is arranged in the middle of the cover plate 16, and the inner side surface of the cover plate 16 is also formed with a pressing protrusion 161 protruding toward the inside of the box body 1 around the perforation 13, and a positioning ring 153 is formed in the middle of the box wall on one side of the box body 15 facing the cover plate 16, and the opposite ends of the driven gear 72 are pressed and axially positioned by the pressing protrusion 161 on the cover plate and the positioning ring 153. In this embodiment, the pressing protrusion 161 of the cover plate 16 and the positioning ring 153 formed in the middle of the box wall of the box body 15 are used to press and position the opposite ends of the driven gear 72, which can effectively realize the installation and positioning of the driven gear 72, and the structure is simple and easy to assemble. In the specific implementation, the end of the driven gear 72 facing the positioning ring 153 can further protrude to form an inner positioning ring, and the inner positioning ring is inserted into the positioning ring 153, so as to achieve better coaxial positioning.

[0046] In an optional embodiment of the present invention, Figures 1 to 6 , the inner hole 153a of the positioning ring 153 also corresponds to the box wall of the box body 15. In this embodiment, the inner hole of the positioning ring 153 also corresponds to the box wall of the box body 15, so that the end of the screw rod 3 away from the pressing plate 5 can extend into the upper beam B through the inner hole 153 of the positioning ring 153, and the internal space of the upper beam B is used to accommodate the screw rod 3. It can be understood that since the axial movable stroke of the screw rod 3 is not too large, the distance between the driven gear 72 and the corresponding side box wall of the box body 15 can also be reasonably designed, and the distance between the driven gear 72 and the box wall can also be used to provide a movable space for the screw rod 3.

[0047] In an optional embodiment of the present invention, Figures 1 to 6 The anti-rotation structure 4 includes a positioning convex key 40 provided on the hole wall of the through hole 13 and extending in the axial direction, and a positioning key groove 42 provided on the outer side surface of the screw rod 3 and extending in the axial direction, and the positioning convex key 40 is correspondingly inserted into the positioning key groove 42. In this embodiment, the positioning convex key 40 on the hole wall of the through hole 13 and the positioning key groove 42 on the outer side surface of the screw rod 3 are plugged in and matched with each other, which can effectively limit the screw rod 3 in the circumferential direction, and the structure is simple.

[0048] In an optional embodiment of the present invention, Figures 1 to 6, a side wall of the accommodating cavity 10 and the inner side surface of the cover plate 16 are respectively correspondingly protruded to form an axle seat 101, and the opposite sides of the two axle seats 101 are respectively recessed to form positioning half grooves 103. When the cover plate 16 is fixed on the box body 15, the positioning half grooves 103 of the two axle seats 101 are surrounded to form a pivot hole 105 for the gear shaft 701 to be pivoted. The through hole 14 is opened on the side wall of the accommodating cavity 10 on which the axle seat 101 is formed and is directly opposite to the pivot hole 105; the outer wall of the middle section of the gear shaft 701 is correspondingly recessed to form a positioning ring groove 701a, and a positioning convex ring 105a is correspondingly protruded on the hole wall of the pivot hole 105. When the gear shaft 701 is assembled to the pivot hole 105, the positioning ring groove 701a and the positioning convex ring 105a are correspondingly engaged to position the gear shaft 701 in the axial direction. In this embodiment, a shaft seat 101 is formed by corresponding protrusions on a side wall of the accommodating cavity 10 and the inner side surface of the cover plate 16. During the specific assembly, one side of the gear shaft 701 of the driving gear 70 can be first installed on the positioning half groove 103 of the shaft seat 101 on the inner wall of the accommodating cavity 10, and then the cover plate 16 is buckled on to position the other side of the gear shaft 701 by the positioning half groove 103 of the shaft seat 101 of the cover plate 16, so that the installation of the driving gear 70 can be completed. The assembly is very convenient, and the driving gear 70 can be positioned by using the cover plate 16; and the positioning ring groove 701a of the gear shaft 701 and the positioning convex ring 105a of the pivot hole 105 are engaged with each other, so that the gear shaft 701 can be positioned in the axial direction to prevent the gear shaft 701 from moving in the axial direction and achieve stable positioning.

[0049] In an optional embodiment of the present invention, Figure 7 and Figure 8 As shown, the pressure plate 5 protrudes toward the middle of one side of the screw rod 3 to form a pivot seat 50, and an anti-slip pad 52 is provided on the other side. The two opposite side surfaces of the pivot seat 50 each protrude to form a pivot convex portion 501. The end surface of one end of the screw rod 3 extending out of the upper beam B has two pivot convex pieces 30 protruding alternately, and each pivot convex piece 501 is also provided with a pivot recess 301. The screw rod 3 is pivotally connected to the pivot seat 50 with the two pivot convex pieces 30 respectively located on the opposite sides of the pivot seat 50 and the pivot recess 301 and the pivot convex portion 501 correspondingly cooperate with each other. In this embodiment, the screw 3 and the pressure plate 5 are pivotally connected by the pivotal recess 301 on the pivotal protrusion 30 of the screw 3 and the pivotal protrusion 501 on the pivotal protrusion 501 of the pressure plate 5. Therefore, during the specific installation, the pressure plate 5 can be slightly rotated so that the pressure surface of the pressure plate 5 can be exactly parallel to the wall surface of the wall to achieve stable pressure positioning. In addition, by providing an anti-slip gasket 52, it can effectively prevent the pressure plate 5 and the pressed wall from sliding relative to each other, thereby achieving stable pressing positioning.

[0050] In a specific implementation, the pivoting protrusion 501 can be a semi-spherical protrusion, and the pivoting concave portion 301 can be a circular hole or a concave pit, or the pivoting protrusion 501 can be a convex shaft and the pivoting concave portion 301 can be a circular hole.

[0051] On the other hand, an embodiment of the utility model provides a curtain, comprising an upper beam B and an upper beam punch-free installation device assembled on at least one end of the upper beam B, wherein the upper beam punch-free installation device A is a curtain upper beam B punch-free installation device as described in any of the above. In this embodiment, the curtain adopts the above-mentioned upper beam punch-free installation device A, and the installation structure is simpler.

[0052] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. A curtain upper beam punch-free installation device, comprising a mounting seat with one end fixed to the end of the upper beam, characterized in that: The device also includes: A screw rod is axially arranged parallel to the length direction of the upper beam and axially movable and assembled on the mounting seat, and a rotation-stopping structure is arranged between the screw rod and the mounting seat to prevent the screw rod from rotating in the circumferential direction; A pressing plate assembled at one end of the screw rod away from the upper beam and used for pressing against the wall on one side of the window body for positioning; and An adjusting mechanism assembled on the mounting seat for driving the screw to move axially, the adjusting mechanism comprising: A driving gear pivotally mounted on the mounting seat, wherein a driving portion for driving the driving gear to rotate and exposed outside the upper beam is disposed on the gear shaft of the driving gear; and A driven gear is pivotally mounted on the mounting seat and meshed with the driving gear. A screw hole is formed at the wheel center of the driven gear. The screw rod is screwed correspondingly to the screw hole.

2. The curtain upper beam punch-free installation device according to claim 1, characterized in that: The central axes of the driving gear and the driven gear intersect at a predetermined non-zero angle, and both the driving gear and the driven gear are bevel gears or the driving gear is a helical gear and the driven gear is an end gear meshing with the helical gear.

3. The curtain upper beam punch-free installation device according to claim 1 or 2, characterized in that: The mounting base is a box body with a accommodating cavity inside. One end of the box body protrudes out to form a plug-in portion corresponding to the end of the upper beam, and a through hole is provided in the middle of the end wall of the other end. The adjustment mechanism is assembled in the accommodating cavity of the box body, and one end of the screw rod extends to the outside of the box body through the through hole. A through hole is also provided on one side of the box body for exposing the driving portion.

4. The curtain upper beam punch-free installation device according to claim 3, characterized in that: The box body is composed of a box main body with the accommodating cavity formed inside and an opening at one end, and a cover plate detachably assembled at the opening to cover the opening.

5. The curtain upper beam punch-free installation device according to claim 4, characterized in that: The through hole is arranged in the middle of the cover plate, and the inner side surface of the cover plate is also formed with a pressing protrusion around the through hole and protruding toward the inside of the box body. A positioning ring is formed in the middle of the box wall on one side of the box body facing the cover plate, and the opposite ends of the driven gear are axially positioned by the corresponding pressing protrusion on the cover plate and the positioning ring.

6. The curtain upper beam punch-free installation device according to claim 5, characterized in that: The inner hole of the positioning ring also corresponds to the box wall that penetrates the box body.

7. The curtain upper beam punch-free installation device according to claim 3, characterized in that: The anti-rotation structure includes a positioning convex key arranged on the hole wall of the through hole and extending in the axial direction, and a positioning key groove arranged on the outer side surface of the screw and extending in the axial direction, and the positioning convex key is correspondingly inserted into the positioning key groove.

8. The curtain upper beam punch-free installation device according to claim 4, characterized in that: A side wall of the accommodating cavity and the inner side surface of the cover plate are respectively correspondingly protruded to form an axle seat, and the two opposite sides of the axle seats are respectively recessed to form positioning half grooves. When the cover plate is fixed to the box body, the positioning half grooves of the two axle seats are combined to form a pivot hole for the gear shaft to pivot. The through hole is opened on the side wall of the accommodating cavity where the axle seat is formed and faces the pivot hole; the outer wall of the middle section of the gear shaft is correspondingly recessed to form a positioning ring groove, and a positioning convex ring is correspondingly protruded on the wall of the pivot hole. When the gear shaft is assembled to the pivot hole, the positioning ring groove and the positioning convex ring are correspondingly engaged to position the gear shaft in the axial direction.

9. The curtain upper beam punch-free installation device according to claim 1, characterized in that: The pressure plate protrudes toward the middle of one side of the screw rod to form a pivot seat, and an anti-slip pad is provided on the other side. The two opposite side surfaces of the pivot seat each protrude to form a pivot convex portion. The end surface of one end of the screw rod extending out of the upper beam protrudes alternately with two pivot convex pieces, and each pivot convex piece is also provided with a pivot recess. The screw rod is pivotally connected to the pivot seat with the two pivot convex pieces respectively located on the opposite sides of the pivot seat and the pivot recess and the pivot convex portion cooperate with each other.

10. A curtain comprising an upper beam and an upper beam punch-free installation device assembled on at least one end of the upper beam, characterized in that: The upper beam punching-free installation device is the curtain upper beam punching-free installation device as described in any one of claims 1-9.

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