Curtain and drilling-free mounting device for its upper rail

Abstract

Provided in the embodiments of the present application are a curtain and a drilling-free mounting device for its upper rail. The device comprises a mounting base, a pressing seat that is assembled on the mounting base for linear reciprocating sliding, and an adjustment mechanism assembled on the mounting base. The adjustment mechanism comprises: a double-ended screw, of which two opposite ends are respectively provided with first external threads and second external threads having opposite thread directions; two nuts, which are driven by the double-ended screw to synchronously move towards or away from each other in the axial direction; and two push rods, which are symmetrically arranged with respect to a symmetry plane that passes through the midpoint of the space between the two nuts and is perpendicular to the axial direction of the double-ended screw. One end of each of the two push rods serves as a linkage end to be in driven connection with the two nuts on a one-to-one basis so as to be driven by the two nuts to move synchronously, while the other end of each of the two push rods serves as a driving end and is assembled on the pressing seat and relatively fixed to the pressing seat in a sliding direction of the pressing seat, such that when the linkage ends move synchronously with the nuts, the driving ends drive the pressing seat to slide correspondingly. The present embodiment has a simple structure and is easy to operate.

Description

Curtains and their top beam no-drill installation device Technical Field

[0001] This application relates to the field of curtain accessories technology, and in particular to a curtain and its top beam installation device that does not require drilling. Background Technology

[0002] No-drill curtain top installation devices are becoming increasingly popular due to their convenience in allowing for quick and easy installation and positioning of curtain tops without the need for drilling.

[0003] [Corrected according to Rule 91, August 16, 2024] An existing curtain top beam installation device without drilling mainly includes: a mounting base fixed at one end to the end of the top beam and having an internal cavity; a linkage member with a worm gear portion and a lead screw portion at its two ends, with one end of the worm gear portion extending into the cavity of the mounting base; a worm gear assembled in the mounting base and meshing with the worm gear portion of the linkage member to drive the linkage member to rotate; an adjusting block with one end extending into the mounting base; a locking member screwed onto the lead screw portion of the linkage member to limit the axial movement of the adjusting block into the mounting base; and an elastic member with both ends abutting against the locking member and the adjusting block, respectively. The adjusting block is pushed outward by the elastic member and presses against the wall. One end of the worm gear protrudes from the mounting base to facilitate operation of the worm gear. When used to assemble the upper beam, one end of the mounting base of the device is fixed to the end of the upper beam. Then, the adjusting block is pushed inward to move it slightly inward so that the upper beam can be installed into the window frame. Under the action of the elastic element, the adjusting block is pressed against the mounting wall on both sides of the window frame to achieve pre-installation. Then, the worker drives the worm gear to drive the linkage to rotate, which causes the locking element to move axially towards the adjusting block and press against the adjusting block to prevent the adjusting block from elastically retracting. This achieves drilling-free installation and can also be compatible with window frames of different widths within a small range.

[0004] However, the inventors found in practice that the above-mentioned no-drill installation device has a relatively complex structure, a relatively large number of parts, and is relatively troublesome to manufacture. Technical issues

[0005] The technical problem to be solved by the embodiments of this application is to provide a curtain top beam installation device that does not require drilling, which has a simple structure and is easy to operate.

[0006] The technical problem to be solved by the embodiments of this application is to provide a curtain with a simple and easy-to-operate installation structure. Solution

[0007] To solve the above-mentioned technical problems, this application provides the following technical solution: a curtain top beam installation device without drilling, comprising a mounting base fixed at one end to the end of the top beam, a pressing base linearly reciprocatingly slidably assembled on the mounting base for abutting against and positioning against the wall on one side of the window, and an adjustment mechanism assembled on the mounting base for driving the pressing base to linearly reciprocate relative to the end of the top beam, the adjustment mechanism comprising:

[0008] A double-ended screw is assembled on the mounting base and fixed axially relative to the mounting base. The two opposite ends of the double-ended screw are respectively provided with a first external thread and a second external thread with opposite helical directions, and at least one end is exposed from the mounting base as the operating end.

[0009] Two nuts, respectively screwed into the first and second external threads at both ends of the double-ended screw, and moving synchronously in opposite directions or in the axial direction under the drive of the double-ended screw; and

[0010] Two push rods are symmetrically arranged with respect to the midpoint of the distance between the two nuts and perpendicular to the axis of the double-ended screw. One end of each push rod is connected to the two nuts as a linkage end and moves synchronously under the drive of the two nuts. The other end of each push rod is assembled on the pressure seat as a driving end and is fixed relative to the pressure seat in the sliding direction of the pressure seat. When the linkage end moves synchronously with the nuts, the driving end drives the pressure seat to slide accordingly.

[0011] Furthermore, the adjustment mechanism also includes:

[0012] Two support rods are symmetrically arranged relative to the symmetrical face. One end of each support rod is pivotally connected to the mounting base via a first pivot, while the other end of the two support rods is pivotally connected to the two nuts via a second pivot. The central axes of the first and second pivots are both perpendicular to the axial direction of the double-ended screw.

[0013] Furthermore, the connecting ends of the two push rods are directly pivotally connected to the two nuts one-to-one via a third pivot.

[0014] Furthermore, the driving ends of the two push rods are pivotally connected to the pressure seat via a fourth pivot, wherein the third pivot and the fourth pivot are parallel and both perpendicular to the axial direction of the double-ended screw; or, the pressure seat is provided with a guide groove extending parallel to the axial direction of the double-ended screw, and the driving ends of the two push rods are each provided with a roller, and the roller is correspondingly disposed in the guide groove.

[0015] Furthermore, the adjustment mechanism also includes:

[0016] A telescopic assembly consisting of two connecting rods hinged in an X-shape via a hinge shaft. One end of each connecting rod is pivotally connected to one of the two nuts via a third pivot, while the other end is pivotally connected to the connecting ends of the two push rods via a fifth pivot. The hinge shaft, the third pivot, and the fifth pivot are parallel and perpendicular to the axial direction of the double-ended screw.

[0017] Furthermore, two sets of the telescopic components are provided, each connecting rod having a pivot hole at both ends. Each nut has two coaxially protruding sides forming two third pivots that are pivotally connected to the corresponding pivot holes on the corresponding ends of the corresponding connecting rods of the two telescopic components belonging to different groups. The push rod is I-shaped and includes two parallel crossbars and a connecting part between the middle of the two crossbars. Each crossbar has a pivot at one end. Each fifth pivot passes through the pivot holes at the corresponding ends of the corresponding connecting rods of the two telescopic components belonging to different groups and is pivotally connected at both ends to the pivots of the two crossbars of a corresponding push rod.

[0018] Furthermore, the adjacent sides of the pivot ends of the two support rods are respectively provided with first locking teeth that keep them meshing with each other when the two support rods rotate around the first pivot.

[0019] Furthermore, the adjacent sides of the drive ends of the two push rods are respectively provided with second locking teeth that maintain mutual engagement when the two push rods rotate around the fourth pivot.

[0020] Furthermore, the pressure seat includes:

[0021] The base is connected at one end to the drive end of the push rod, and the base is also provided with a guide hole that passes through the base along the sliding direction of the pressure seat;

[0022] A telescopic block is disposed on the side of the base away from the mounting seat. The telescopic block protrudes from the side facing the base, corresponding to the guide post inserted into the guide hole. An anti-slip pad is also provided on the side away from the base. An anti-detachment structure is also provided between the telescopic block and the base to prevent the telescopic block from detaching from the base.

[0023] An elastic element is disposed between the base and the telescopic block, with its opposite ends abutting against the base and the telescopic block, respectively.

[0024] On the other hand, in order to solve the above-mentioned further technical problems, the embodiments of this application provide the following technical solutions: a curtain, including a top beam and a top beam no-drilling installation device assembled at at least one end of the top beam, wherein the top beam no-drilling installation device is a curtain top beam no-drilling installation device as described in any of the above claims. Beneficial effects

[0025] After adopting the above technical solution, the embodiments of this application have at least the following beneficial effects: By designing the first and second external threads at opposite ends of the double-ended screw to have opposite helical directions, when the user screws the double-ended screw through the operating end, the two nuts screwed onto the first and second external threads will move synchronously towards each other or away from each other, which will drive the two push rods and the connecting ends of the two nuts to move synchronously. Since the driving ends of the two push rods are assembled on the pressure seat, when the two nuts move synchronously towards each other or away from each other, the connecting ends of the two push rods move synchronously with the nuts, which will cause the driving ends of the two push rods to drive the pressure seat to slide accordingly, realizing the linear reciprocating sliding of the pressure seat relative to the mounting seat. For example, turning the double-ended screw in a predetermined direction of rotation (such as clockwise) will cause the pressure seat to slide away from the mounting base and press against the corresponding wall to fix the upper beam. When the double-ended screw is turned in the opposite direction, the pressure seat will slide towards the mounting base and loosen from the wall, making it easier to remove the upper beam. Attached Figure Description

[0026] Figure 1 is a schematic diagram of an optional embodiment of the curtain top beam no-drill installation device of this application and the disassembled structure of the top beam.

[0027] Figure 2 is a schematic diagram of the structure of an optional embodiment of the curtain top beam no-drill installation device of this application after the adjustment mechanism is installed in the mounting base.

[0028] Figure 3 is a schematic diagram of an optional embodiment of the curtain top beam no-drill installation device of this application and the assembly structure of the top beam.

[0029] Figure 4 is a schematic diagram of the disassembled structure of the adjustment mechanism of an optional embodiment of the curtain top beam no-drill installation device of this application.

[0030] Figure 5 is a cross-sectional structural diagram along the central axis of an optional embodiment of the curtain top beam no-drill installation device of this application.

[0031] Figure 6 is a cross-sectional view of the central axis along the length of the double-ended screw in an optional embodiment of the curtain top beam no-drill installation device of this application.

[0032] Figure 7 is a top view schematic diagram of an optional embodiment of the curtain top beam no-drill installation device of this application.

[0033] Figure 8 is a top view schematic diagram of another optional embodiment of the curtain top beam no-drill installation device of this application.

[0034] Figure 9 is a top view schematic diagram of another optional embodiment of the curtain top beam no-drill installation device of this application.

[0035] Figure 10 is a top view schematic diagram of another optional embodiment of the curtain top beam no-drill installation device of this application.

[0036] Figure 11 is a schematic diagram of the structure of the pressure seat of an optional embodiment of the curtain top beam no-drill installation device of this application.

[0037] Figure 12 is a cross-sectional schematic diagram of the assembly part of the mounting base and the pressure base of an optional embodiment of the curtain top beam no-drilling installation device of this application. Embodiments of the present invention

[0038] The present application will now be described in further detail 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 application and are not intended to limit the present application. Moreover, the embodiments and features in the embodiments of the present application can be combined with each other unless otherwise specified.

[0039] As shown in Figures 1-10, an optional embodiment of this application provides a curtain top beam installation device A without drilling, including a mounting base 1 with one end fixed to the end of the top beam B, a pressing seat 3 linearly reciprocatingly slidably assembled on the mounting base 1 for abutting against and positioning against the wall on one side of the window, and an adjustment mechanism 5 assembled on the mounting base 1 for driving the pressing seat 3 to linearly reciprocate relative to the end of the top beam B. The adjustment mechanism 5 includes:

[0040] A double-ended screw 50 is assembled on the mounting base 1 and is fixed relative to the mounting base 1 in the axial direction. The two opposite ends of the double-ended screw 50 are respectively provided with a first external thread 501 and a second external thread 503 with opposite helical directions, and at least one end is exposed from the mounting base 1 as an operating end 50a.

[0041] Two nuts 52, respectively screwed to the first external thread 501 and the second external thread 503 at both ends of the double-ended screw 50, and moving synchronously in opposite directions or in the axial direction under the drive of the double-ended screw 50; and

[0042] Two push rods 54 are symmetrically arranged relative to a plane of symmetry M that passes through the midpoint of the distance between the two nuts 52 and is perpendicular to the axis of the double-ended screw 50. One end of each push rod 54 serves as a connecting end 54a, which is connected to the two nuts 52 in a one-to-one transmission manner and moves synchronously under the drive of the two nuts 52. The other end of each push rod 54 serves as a driving end 54b, which is assembled on the pressing seat 3 and fixed relative to the pressing seat 3 in the sliding direction of the pressing seat 3. When the connecting end moves synchronously with the nuts 52, the driving end 54b drives the pressing seat 3 to slide accordingly.

[0043] [Corrected according to Rule 91, August 16, 2024] In this embodiment of the application, the first external thread 501 and the second external thread 503 at opposite ends of the double-ended screw 50 are designed with opposite helical directions. Thus, when the user screws the double-ended screw 50 in different directions through the operating end 50a, the two nuts 52, which are respectively screwed onto the first external thread 501 and the second external thread 503, will move synchronously towards each other or away from each other. This will drive the connecting ends 54a of the two push rods 54, which are connected to the two nuts 52 in a one-to-one transmission, to move synchronously. Since the driving ends 54b of the two push rods 54 are assembled on the pressure seat 3, when the two nuts 52 move synchronously towards each other or away from each other, the connecting ends 54a of the two push rods 54 move synchronously with the nuts 52. This causes the driving ends 54b of the two push rods 54 to drive the pressure seat 3 to slide accordingly, thereby realizing the linear reciprocating sliding of the pressure seat 3 relative to the mounting seat 1. For example, turning the double-ended screw 50 in a predetermined rotation direction (such as clockwise) will cause the pressure seat 3 to slide away from the mounting seat 1 and press against the corresponding wall to fix the upper beam B. When the double-ended screw is turned in the opposite direction, the pressure seat will slide towards the mounting seat and loosen from the wall, making it easy to remove the upper beam B.

[0044] In specific implementation, to facilitate the exposure of the operating end 50a of the double-ended screw 50, through holes 10 can be correspondingly opened on the mounting base 1 and the upper beam B to expose the operating end 50a; at the same time, both ends of the double-ended screw 50 can serve as operating ends 50a; in addition, the end face of the operating end 50a can form a drive hole with a non-circular cross section, or the end of the operating end 50a has a drive shaft head with a non-circular cross section, which is convenient for user operation; furthermore, as shown in Figures 1-2, the mounting base 1 is formed by the snap-fit ​​of an upper shell and a lower shell, which facilitates production and structural assembly.

[0045] In an optional embodiment of this application, as shown in Figures 4-5 and 7-8, the adjustment mechanism 5 further includes:

[0046] Two support rods 56 are symmetrically arranged with respect to the plane of symmetry M. One end of each support rod 56 serves as a pivot end 56a, which is pivotally connected to the mounting base 1 via a first pivot 561. The other end of each support rod 56 serves as a support end 56b, which is pivotally connected to the two nuts 52 one-to-one via a second pivot 563. The central axes of both the first pivot 561 and the second pivot 563 are perpendicular to the axial direction of the double-ended screw 50. In this embodiment, by providing two support rods 56, the mounting base 1 connects the two nuts 52 using the two support rods 56, thereby assembling the double-ended screw 50 onto the mounting base 1. This results in a longer adjustable stroke for the overall adjusting mechanism 5 and better structural stability.

[0047] In an optional embodiment of this application, the connecting ends 54a of the two push rods 54 are directly pivotally connected to the two nuts 52 one-to-one via a third pivot 541. In this embodiment, directly pivoting the connecting ends 54a of the two push rods 54 to the two nuts 52 via a third pivot 541 simplifies the assembly structure and facilitates installation. Specifically, as shown in Figure 7, the third pivot 541 and the second pivot 563 can be separately configured; or, as shown in Figures 4 and 8, the third pivot 541 and the second pivot 563 share a single pivot.

[0048] In one optional embodiment of this application, as shown in FIG9, the driving ends 54b of the two push rods 54 are pivotally connected to the pressing seat 3 by means of a fourth pivot 543, wherein the third pivot 541 and the fourth pivot 543 are parallel and both perpendicular to the axial direction of the double-ended screw 50; or, as shown in FIG10, the pressing seat 3 is provided with a guide groove 3a extending parallel to the axial direction of the double-ended screw 50, and the driving ends 54b of the two push rods 54 are each provided with a roller 3b, and the roller 3b is correspondingly disposed in the guide groove 3a. In this embodiment, to enable the driving ends 54b of the two push rods 54 to drive the pressure seat 3 to move linearly relative to the mounting base 1, two different implementation methods are provided. The driving ends 54b of the two push rods 54 can be directly pivotally connected to the pressure seat 3 via the fourth pivot 543, or they can be installed in the guide groove 3a by rollers. Both methods can achieve the driving of the pressure seat 3 by the push rods 54. In specific implementation, the connection method between the push rods 54 and the pressure seat 3 can be flexibly selected according to the ease of installation and design cost.

[0049] In an optional embodiment of this application, as shown in Figures 4 and 5, the adjustment mechanism 5 further includes:

[0050] A telescopic assembly 58 is formed by two connecting rods 581 hinged in an X-shape via a hinge shaft 583. One end of each connecting rod 581 is pivotally connected to one of the two nuts 52 via a third pivot 541, while the other end is pivotally connected to the connecting ends 54a of the two push rods 54 via a fifth pivot 545. The hinge shaft 583, the third pivot 541, and the fifth pivot 545 are parallel and perpendicular to the axial direction of the double-ended screw 50. In this embodiment, the telescopic assembly 58, which is formed by two connecting rods 581 hinged in an X-shape via a hinge shaft 583, is used to increase the adjustable stroke of the adjusting mechanism 5.

[0051] In an optional embodiment of this application, as shown in Figures 4 and 5, two sets of telescopic components 58 arranged in parallel are provided. Each connecting rod 581 has a pivot hole 581a at both ends. Each nut 52 has two third pivots 541 that are coaxially protruding outward from both sides and pivotally connected to the pivot holes 581a at the corresponding ends of the corresponding connecting rods 581 of the two telescopic components 58 belonging to different groups. The push rod 54 is I-shaped and includes two parallel crossbars 547 and a connecting part 549 connecting the middle of the two crossbars 547. Each crossbar 547 has a pivot part 547a at one end. Each fifth pivot 545 passes through the pivot holes 581a at the corresponding ends of the corresponding connecting rods 581 of the two telescopic components 58 belonging to different groups and is pivotally connected at both ends to the pivot parts 547a of the two crossbars 547 of a corresponding push rod 54. In this embodiment, two sets of telescopic components 58 are arranged in parallel to each other. The two connecting rods 581 of each set of telescopic components 58 are matched with the crossbars of the two push rods 54, which makes the overall structure more stable. At the same time, the push rods 54 adopt an I-shape, which makes the design more lightweight.

[0052] Understandably, to facilitate the end pivoting installation of the fifth pivot 545, the pivoting part 547a can adopt a pivoting hole, pivoting groove, etc. In the embodiment shown in Figure 4, a pivoting groove with a side opening is adopted. In addition, in some embodiments, the support rod 56 and the push rod 54 can adopt the same structural design, so as to correspondingly cooperate with the first pivot 561 and the second pivot 563 to pivot the mounting base 1 and the nut 52 respectively, thereby facilitating the production and assembly of related components and reducing costs.

[0053] In an optional embodiment of this application, as shown in Figures 4 and 5, adjacent sides of the pivot ends 56a of the two support rods 56 are respectively provided with first locking teeth 56c that maintain mutual engagement when the two support rods 56 rotate around the first pivot 561. In this embodiment, by engaging the pivot ends 56a of the two support rods 56 with the first locking teeth 56c, the synchronicity of the rotation of the two support rods 56 is ensured, making the structure more stable.

[0054] In an optional embodiment of this application, as shown in Figures 4 and 5, adjacent sides of the drive ends 54b of the two push rods 54 are respectively provided with second locking teeth 54c that maintain mutual engagement when the two push rods 54 rotate around the fourth pivot 543. In this embodiment, by engaging the drive ends 54b of the two push rods 54 with the second locking teeth 54c, the synchronicity of the rotation of the two push rods 54 is ensured, resulting in a more stable structure.

[0055] In an optional embodiment of this application, as shown in Figures 5 and 11-12, the pressing seat 3 includes:

[0056] The base 30 is connected to the drive end of the push rod 54 at one end, and the base 30 is also provided with a guide hole 301 that passes through the base 30 along the sliding direction of the pressing seat 3;

[0057] A telescopic block 32 is disposed on the side of the base 30 opposite to the mounting base 1. The telescopic block 32 protrudes from the side facing the base 30, corresponding to the guide post 321 inserted into the guide hole 301. An anti-slip pad 323 is also provided on the side opposite to the base 30. An anti-detachment structure 33 is also provided between the telescopic block 32 and the base 30 to prevent the telescopic block 32 from detaching from the base 30.

[0058] The elastic element 34 is disposed between the base 30 and the telescopic block 32, with its opposite ends abutting against the base 30 and the telescopic block 32 respectively.

[0059] [Corrected according to Rule 91, August 16, 2024] In this embodiment, the pressing seat 3 is composed of a base 30, a telescopic block 32, and an elastic element 34. The telescopic block 32 is pressed against the wall by an anti-slip pad 323, which can effectively prevent the telescopic block 32 from sliding relative to the wall. The elastic element 34 can make the telescopic block 32 elastically press against the wall, which can improve the stability of the telescopic block 32 and the wall. At the same time, the elastic element 34 can also assist in pushing the telescopic block 32 when installing the upper beam B, so that the telescopic block 32 can move and facilitate assembly. Moreover, the anti-detachment structure 33 is adopted to prevent the telescopic block 32 from detaching. Furthermore, the guide post 321 and the guide hole 301 are interlocked to effectively guide the movement of the telescopic block 32 relative to the base 30, improving the stability of the movement of the telescopic block 32. In specific implementations, the elastic element 34 can be implemented using a helical spring, compression spring, etc. In this embodiment, a helical spring sleeved on the guide post 321 is used, and multiple such springs can be provided to enhance the elastic resistance. Furthermore, to prevent the telescopic block 32 from detaching from the base 30, the anti-detachment structure 33 can be implemented in many ways. For example, as shown in Figures 11 and 12, anti-detachment is achieved by using an anti-detachment groove 330 and an anti-detachment elastic barb 332 to hook and cooperate with each other; or, the anti-detachment groove is inserted into an anti-detachment pin; or, anti-detachment blocks are respectively provided on the telescopic block 32 and the base 30 for mutual abutment and cooperation.

[0060] On the other hand, as shown in Figures 1 to 3, this application embodiment provides a curtain, including a top beam B and a no-drill installation device for the top beam assembled at at least one end of the top beam B. The no-drill installation device A is a curtain top beam no-drill installation device as described in any of the above claims. In this embodiment, the curtain uses the aforementioned no-drill installation device A, making the installation structure simpler.

[0061] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application 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 other forms under the guidance of this application without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of this application.

Claims

1. A no-drill installation device for a curtain top beam, comprising a mounting base fixed at one end to the end of the top beam, a pressure seat linearly reciprocatingly slidable on the mounting base for abutting against and positioning against a wall on one side of the window, and an adjustment mechanism assembled on the mounting base for driving the pressure seat to linearly reciprocate relative to the end of the top beam, characterized in that, The adjustment mechanism includes: A double-ended screw is assembled on the mounting base and fixed axially relative to the mounting base. The two opposite ends of the double-ended screw are respectively provided with a first external thread and a second external thread with opposite helical directions, and at least one end is exposed from the mounting base as the operating end. Two nuts, respectively screwed into the first and second external threads at both ends of the double-ended screw, and moving synchronously in opposite directions or in the axial direction under the drive of the double-ended screw; and Two push rods are symmetrically arranged with respect to the midpoint of the distance between the two nuts and perpendicular to the axis of the double-ended screw. One end of each push rod is connected to the two nuts as a linkage end and moves synchronously under the drive of the two nuts. The other end of each push rod is assembled on the pressure seat as a driving end and is fixed relative to the pressure seat in the sliding direction of the pressure seat. When the linkage end moves synchronously with the nuts, the driving end drives the pressure seat to slide accordingly.

2. The curtain top beam installation device without drilling as described in claim 1, characterized in that, The adjustment mechanism further includes: Two support rods are symmetrically arranged relative to the symmetrical face. One end of each support rod is pivotally connected to the mounting base via a first pivot, while the other end of the two support rods is pivotally connected to the two nuts via a second pivot. The central axes of the first and second pivots are both perpendicular to the axial direction of the double-ended screw.

3. The curtain top beam installation device without drilling as described in claim 1 or 2, characterized in that, The connecting ends of the two push rods are directly pivotally connected to the two nuts one-to-one via a third pivot.

4. The curtain top beam installation device without drilling as described in claim 1, characterized in that, The driving ends of the two push rods are pivotally connected to the pressure seat via a fourth pivot, wherein the third pivot and the fourth pivot are parallel and both perpendicular to the axial direction of the double-ended screw; or, the pressure seat is provided with a guide groove extending parallel to the axial direction of the double-ended screw, and the driving ends of the two push rods are each provided with a roller, and the roller is correspondingly disposed in the guide groove.

5. The curtain top beam installation device without drilling as described in claim 1, 2, or 4, characterized in that, The adjustment mechanism further includes: A telescopic assembly consisting of two connecting rods hinged in an X-shape via a hinge shaft. One end of each connecting rod is pivotally connected to one of the two nuts via a third pivot, while the other end is pivotally connected to the connecting ends of the two push rods via a fifth pivot. The hinge shaft, the third pivot, and the fifth pivot are parallel and perpendicular to the axial direction of the double-ended screw.

6. The curtain top beam installation device without drilling as described in claim 5, characterized in that, The telescopic components are arranged in two parallel sets. Each connecting rod has a pivot hole at both ends. Each nut extends outward coaxially from both sides to form two third pivots that are pivotally connected to the corresponding pivot holes on the corresponding ends of the corresponding connecting rods of the two telescopic components belonging to different sets. The push rod is I-shaped and includes two parallel crossbars and a connecting part between the middle of the two crossbars. Each crossbar has a pivot at one end. Each fifth pivot passes through the pivot holes at the corresponding ends of the corresponding connecting rods of the two telescopic components belonging to different sets and is pivotally connected at both ends to the pivots of the two crossbars of a corresponding push rod.

7. The curtain top beam installation device without drilling as described in claim 2, characterized in that, The adjacent sides of the pivot ends of the two support rods are also provided with first locking teeth that keep them meshing with each other when the two support rods rotate around the first pivot.

8. The curtain top beam installation device without drilling as described in claim 3, characterized in that, The adjacent sides of the drive ends of the two push rods are also provided with second locking teeth that keep them meshing with each other when the two push rods rotate around the fourth pivot.

9. The curtain top beam installation device without drilling as described in claim 1, characterized in that, The pressure seat includes: The base is connected at one end to the drive end of the push rod, and the base is also provided with a guide hole that passes through the base along the sliding direction of the pressure seat; A telescopic block is disposed on the side of the base away from the mounting seat. The telescopic block protrudes from the side facing the base, corresponding to the guide post inserted into the guide hole. An anti-slip pad is also provided on the side away from the base. An anti-detachment structure is also provided between the telescopic block and the base to prevent the telescopic block from detaching from the base. An elastic element is disposed between the base and the telescopic block, with its opposite ends abutting against the base and the telescopic block, respectively.

10. A curtain, comprising a top beam and a drill-free mounting device for the top beam assembled to at least one end of the top beam, characterized in that, The above-mentioned no-drill installation device for the upper beam is the curtain upper beam no-drill installation device as described in any one of claims 1-9.

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