Curtain and punching-free mounting device for upper beam of curtain

Abstract

The embodiment of the utility model provides a curtain and an upper beam punching-free installation device thereof, the device comprises an installation seat, a pressing seat capable of being assembled on the installation seat in a linear reciprocating sliding mode and an adjusting mechanism assembled on the installation seat, a first external thread and a second external thread which are opposite in spiral direction are arranged at the two opposite ends of the double-thread screw correspondingly. The two nuts are driven by the double-thread screw to synchronously move towards or away from each other in the axial direction; the two push rods are symmetrically arranged relative to a symmetric plane which passes through the middle point of the distance between the two nuts and is axially perpendicular to the double-thread screw, and one ends of the two push rods serve as linkage ends, are in transmission connection with the two nuts in a one-to-one correspondence mode and are driven by the two nuts to synchronously move. The other opposite ends of the two push rods serve as driving ends to be assembled on the abutting seat and are relatively fixed with the abutting seat in the sliding direction of the abutting seat, and when the linkage ends synchronously move along with the nut, the driving ends drive the abutting seat to correspondingly slide. The embodiment is simple in structure and easy to operate.

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 lock 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 many parts, and is relatively troublesome to manufacture. 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 punching-free installation device, comprising a mounting seat fixed at one end to the end of the upper beam, a pressing seat assembled on the mounting seat in a linear reciprocating manner for tightly positioning against the wall on one side of the window body, and an adjusting mechanism assembled on the mounting seat for driving the pressing seat to linearly reciprocate relative to the end of the upper beam, wherein the adjusting mechanism comprises:

[0008] A double-headed screw assembled on the mounting seat and fixed relative to the mounting seat in the axial direction, wherein the opposite ends of the double-headed screw are respectively provided with a first external thread and a second external thread with opposite spiral directions, and at least one end is exposed from the mounting seat as an operating end;

[0009] Two nuts respectively threadedly connected to the first external thread and the second external thread at both ends of the double-start screw and synchronously moving toward or away from each other in the axial direction under the drive of the double-start screw; and

[0010] Two push rods are symmetrically arranged relative to a symmetry plane passing through the midpoint of the distance between the two nuts and perpendicular to the axial direction of the double-headed screw. One end of the two push rods serves as a linkage end and is transmission-connected to the two nuts one-to-one and moves synchronously driven by the two nuts. The other ends of the two push rods serve as driving ends and are assembled on the pressure seat as driving ends and are relatively fixed to the pressure seat in the sliding direction of the pressure seat. When the linkage end moves synchronously with the nut, 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 symmetry plane, and one end of each support rod is pivotally connected to the mounting seat by means of a first pivot as a pivot end, and the other ends of the two support rods are pivotally connected to the two nuts one by one by means of a second pivot as support ends, and the central axes of the first pivot and the second pivot are perpendicular to the axial direction of the double-headed screw.

[0013] Furthermore, the linkage ends of the two push rods are directly pivotally connected to the two nuts in a one-to-one correspondence by means of a third pivot.

[0014] Furthermore, the driving ends of the two push rods are pivotally connected to the pressure seat by means of a fourth pivot, and the third pivot and the fourth pivot are parallel to and perpendicular to the axial direction of the double-headed screw; or, the pressure seat is provided with a guide groove extending parallel to the axial direction of the double-headed screw, and the driving ends of the two push rods are provided with rollers and the rollers are correspondingly arranged in the guide grooves.

[0015] Furthermore, the adjustment mechanism also includes:

[0016] A telescopic assembly is formed by two connecting rods hinged in an X shape by means of a hinge axis, one end of the two connecting rods is pivoted to the two nuts one by one by means of a third pivot and the other end is pivoted to the linkage ends of the two push rods one by one by means of a fifth pivot, the hinge axis, the third pivot and the fifth pivot are parallel and perpendicular to the axial direction of the double-headed screw.

[0017] Furthermore, two groups of telescopic components arranged in parallel with each other are provided, and pivot holes are opened at opposite ends of each connecting rod. The opposite sides of each nut coaxially protrude outward to form two third pivots pivotally connected to the pivot holes on corresponding ends of corresponding connecting rods of two telescopic components belonging to different groups. The push rod is I-shaped and includes two cross bar parts arranged in parallel with each other and a connecting part connected between the middle parts of the two cross bar parts. A pivot part is provided at one end of each cross bar part. Each of the fifth pivots corresponds to the pivot holes passed through the corresponding ends of the corresponding connecting rods of two telescopic components belonging to different groups and the two ends are correspondingly pivotally connected to the pivot parts of the two cross bar parts of a corresponding push rod.

[0018] Furthermore, adjacent side surfaces of the pivotal ends of the two support rods are respectively provided with first latching teeth for maintaining mutual engagement when the two support rods rotate around the first pivot.

[0019] Furthermore, adjacent side surfaces of the driving ends of the two push rods are also respectively provided with second latching teeth which keep mutually meshing when the two push rods rotate around the fourth pivot.

[0020] Furthermore, the pressing seat comprises:

[0021] A base, one end of which is linked to the driving end of the push rod, and the base is also provided with a guide hole penetrating the base along the sliding direction of the pressing seat;

[0022] A telescopic block is arranged on a side of the base away from the mounting base, the telescopic block protrudes toward a side of the base corresponding to a guide column inserted into the guide hole, and a non-slip pad is also arranged on the side away from the base, and an anti-slip structure is also arranged between the telescopic block and the base to prevent the telescopic block from being separated from the base; and

[0023] The elastic element is arranged between the base and the telescopic block, and two opposite ends thereof are respectively abutted against the base and the telescopic block.

[0024] 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.

[0025] 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 designs the first external thread and the second external thread at the opposite ends of the double-headed screw to have opposite spiral directions. Therefore, when the user screws the double-headed screw through the operating end, the two nuts respectively threaded on the first external thread and the second external thread will move toward or away from each other synchronously, and will drive the two push rods and the connecting ends of the two nuts that are connected in a one-to-one transmission connection to move synchronously. Since the driving ends of the two push rods are assembled on the pressure seat, when the two nuts move toward or away from each other synchronously, the connecting ends of the two push rods move synchronously with the nuts, and then the driving ends of the two push rods drive the pressure seat to slide accordingly, thereby realizing linear reciprocating sliding of the pressure seat relative to the mounting seat. For example, turning the stud screw in a predetermined rotation direction (such as clockwise) can cause the pressure seat to slide away from the mounting seat and then press against the corresponding wall to fix the upper beam. When the stud screw is turned in the opposite direction, the pressure seat will slide toward the mounting seat and loosen from the wall, making it easier to remove the upper beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 2 This is a schematic structural diagram of an optional embodiment of the curtain upper beam punch-free installation device of the utility model after the adjustment mechanism is installed in the installation seat.

[0028] Figure 3 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.

[0029] Figure 4 The present invention is a schematic diagram of the disassembled structure of the adjusting mechanism of an optional embodiment of the curtain upper beam punch-free installation device of the present invention.

[0030] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of an optional embodiment of the curtain upper beam punch-free installation device of the present invention along the length mid-axis plane.

[0031] Figure 6 The present invention is a schematic diagram of the cross-sectional structure of an optional embodiment of the curtain upper beam punch-free installation device of the present invention along the length mid-axis of the double-headed screw.

[0032] Figure 7 The utility model is a top view schematic diagram of the principle of an optional embodiment of the curtain upper beam punch-free installation device.

[0033] Figure 8 This is a top view schematic diagram of the principle of another optional embodiment of the curtain upper beam punch-free installation device of the utility model.

[0034] Fig. 9 This is a top view schematic diagram of the principle of another optional embodiment of the curtain upper beam punch-free installation device of the utility model.

[0035] Fig.10 This is a top view schematic diagram of the principle of another optional embodiment of the curtain upper beam punch-free installation device of the utility model.

[0036] Fig.11 This is a schematic structural diagram of a split pressure seat of an optional embodiment of the curtain upper beam punch-free installation device of the utility model.

[0037] Fig.12 It is a cross-sectional schematic diagram of the assembly part of the mounting seat and the pressing seat of an optional embodiment of the curtain upper beam punch-free mounting device of the utility model. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figure 1-Figure 10 As shown, an optional embodiment of the utility model provides a curtain upper beam punch-free installation device A, comprising a mounting seat 1 with one end fixed to the end of the upper beam B, a pressing seat 3 assembled on the mounting seat 1 in a linear reciprocating manner for tightly positioning against the wall on one side of the window body, and an adjustment mechanism 5 assembled on the mounting seat 1 for driving the pressing seat 3 to linearly reciprocate relative to the end of the upper beam B, wherein the adjustment mechanism 5 comprises:

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

[0041] Two nuts 52 that are respectively threadedly connected to the first external threads 501 and the second external threads 503 at both ends of the double-headed screw 50 and synchronously move toward or away from each other in the axial direction under the drive of the double-headed screw 50; and

[0042] Two push rods 54 are symmetrically arranged relative to a symmetry plane M which passes through the midpoint of the distance between the two nuts 52 and is axially perpendicular to the double-headed screw 50. One end of the two push rods 54 serves as a linkage end 54a which is transmission-connected to the two nuts 52 in a one-to-one correspondence and moves synchronously driven by the two nuts 52. The other ends of the two push rods 54 serve as driving ends 54b which are assembled on the pressure seat 3 and are relatively fixed to the pressure seat 3 in the sliding direction of the pressure seat 3. When the linkage end moves synchronously with the nut 52, the driving end 54b drives the pressure seat 3 to slide accordingly.

[0043] The embodiment of the utility model designs the first external thread 501 and the second external thread 503 at the opposite ends of the double-headed screw 50 to have opposite spiral directions. Therefore, when the user screws the double-headed screw 50 in different directions through the operating end 50a, the two nuts 52 respectively screwed on the first external thread 501 and the second external thread 503 will move toward or away from each other synchronously, and will drive the two push rods 54 and the connecting ends 54a of the two nuts 52 that are connected to each other in a one-to-one transmission manner 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 toward or away from each other synchronously, the connecting ends 54a of the two push rods 54 move synchronously with the nuts 52, thereby making the driving ends 54b of the two push rods 54 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-headed screw 50 in a predetermined rotation direction (such as clockwise) can cause the pressure seat 3 to slide away from the mounting seat 1 and then press against the corresponding wall to fix the upper beam B. When the double-headed screw is turned in the opposite direction, the pressure seat will slide toward the mounting seat and loosen from the wall, making it easier to remove the upper beam B.

[0044] In a specific implementation, in order to facilitate the exposure of the operating end 50a of the double-headed screw 50, the mounting seat 1 and the upper beam B can be provided with through holes 10 for the operating end 50a to be exposed; at the same time, both ends of the double-headed screw 50 can serve as the operating end 50a; in addition, the end surface of the operating end 50a can form a driving hole with a non-circular cross-section, or the end of the operating end 50a has a driving shaft head with a non-circular cross-section, which is convenient for the user to operate; in addition, if Figure 1-Figure 2 As shown, the mounting base 1 is formed by buckling an upper shell and a lower shell, thereby facilitating production and structural assembly.

[0045] In an optional embodiment of the present invention, Figure 4-Figure 5 , Figure 7-Figure 8 As shown, the adjustment mechanism 5 also includes:

[0046] Two support rods 56 are symmetrically arranged relative to the symmetry plane M, one end of each support rod 56 is pivotally connected to the mounting seat 1 by means of a first pivot 561, and the other ends of the two support rods 56 are pivotally connected to the two nuts 52 by means of a second pivot 563 as support ends 56b, and the central axes of the first pivot 561 and the second pivot 563 are perpendicular to the axial direction of the double-headed screw 50. In this embodiment, by further providing two support rods 56, the mounting seat 1 uses the two support rods 56 to connect the two nuts 52, and then the double-headed screw 50 is assembled to the mounting seat 1, and the adjustable stroke of the overall adjustment mechanism 5 is longer, and the structural stability is better.

[0047] In an optional embodiment of the present invention, the linkage ends 54a of the two push rods 54 are directly pivotally connected to the two nuts 52 in a one-to-one correspondence by means of the third pivot 541. In this embodiment, the linkage ends 54a of the two push rods 54 are directly pivotally connected to the two nuts 52 in a one-to-one correspondence by means of the third pivot 541, and the assembly structure is relatively simpler and convenient for installation. Figure 7 As shown, the third pivot 541 and the second pivot 563 may be separately arranged; or, as shown Figure 4 and Figure 8 As shown, the third pivot 541 and the second pivot 563 share a common pivot.

[0048] In an optional embodiment of the present invention, Fig. 9 As shown, 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, and the third pivot 541 and the fourth pivot 543 are parallel and perpendicular to the axial direction of the double-headed screw 50; or Fig.10 As shown, the pressing seat 3 is provided with a guide groove 3a extending parallel to the axial direction of the double-headed screw 50, and the driving ends 54b of the two push rods 54 are both provided with rollers 3b and the rollers 3b are correspondingly arranged in the guide groove 3a. In this embodiment, in order to realize that the driving ends 54b of the two push rods 54 can drive the pressing seat 3 to move linearly relative to the mounting seat 1, two different implementation methods are provided. The driving ends 54b of the two push rods 54 can be directly pivoted with the pressing seat 3 by means of the fourth pivot 543, or can be installed in the guide groove 3a with rollers to roll, and both can realize the driving of the pressing seat 3 by the push rods 54. In specific implementation, the connection method between the push rods 54 and the pressing seat 3 can be flexibly selected according to the difficulty of installation and the design cost.

[0049] In an optional embodiment of the present invention, Figure 4 and Figure 5 As shown, the adjustment mechanism 5 also includes:

[0050] The telescopic assembly 58 is formed by two connecting rods 581 correspondingly hinged in an X shape by means of a hinge shaft 583, one end of the two connecting rods 581 is correspondingly hinged to the two nuts 52 by means of a third pivot 541, and the other end is correspondingly pivoted to the linkage ends 54a of the two push rods 54 by means of a fifth pivot 545, and the hinge shaft 583, the third pivot 541 and the fifth pivot 545 are parallel and perpendicular to the axial direction of the double-headed screw 50. In this embodiment, a telescopic assembly 58 is also provided, which is formed by two connecting rods 581 correspondingly hinged in an X shape by means of a hinge shaft 583, so that the adjustable stroke of the adjustment mechanism 5 is increased by using the telescopic assembly 58.

[0051] In an optional embodiment of the present invention, Figure 4 and Figure 5 As shown, two groups of telescopic components 58 are arranged in parallel with each other, and pivot holes 581a are opened at opposite ends of each connecting rod 581. The opposite sides of each nut 52 coaxially protrude outward to form two third pivots 541 pivotally connected to the pivot holes 581a on the corresponding ends of the corresponding connecting rods 581 of two telescopic components 58 belonging to different groups. The push rod 54 is I-shaped and includes two cross rod portions 547 arranged in parallel with each other and a connecting portion 549 connected between the middle parts of the two cross rod portions 547. A pivot portion 547a is provided at one end of each cross rod portion 547. Each of the fifth pivots 545 corresponds to the pivot holes 581a penetrating through the corresponding ends of the corresponding connecting rods 581 of two telescopic components 58 belonging to different groups, and the two ends are correspondingly pivotally connected to the pivot portions 547a of the two cross rod portions 547 of a corresponding push rod 54. In this embodiment, two sets of telescopic components 58 are arranged in parallel with each other. The two connecting rods 581 of each set of telescopic components 58 correspond to the cross bar parts of the two push rods 54, and the overall structural stability is stronger. At the same time, the push rod 54 adopts an I-shape, and the design is also lighter.

[0052] It can be understood that in order to facilitate the pivotal installation of the end of the fifth pivot shaft 545, the pivotal portion 547a can be a pivotal hole, a pivotal groove, etc. Figure 4 In the embodiment, a side-opening pivot groove is used; in addition, in some embodiments, the support rod 56 and the push rod 54 can completely adopt the same structural design, so as to cooperate with the first pivot 561 and the second pivot 563 to pivotally connect the mounting seat 1 and the nut 52 respectively, thereby facilitating the production and assembly of related components and reducing costs.

[0053] In an optional embodiment of the present invention, Figure 4 and Figure 5As shown, adjacent side surfaces of the pivot ends 56a of the two support rods 56 are also provided with first latch teeth 56c respectively, which are kept in mutual engagement when the two support rods 56 rotate around the first pivot shaft 561. In this embodiment, the pivot ends 56a of the two support rods 56 are also engaged with each other through the first latch teeth 56c, thereby ensuring synchronization when the two support rods 56 rotate, and the structure is more stable.

[0054] In an optional embodiment of the present invention, Figure 4 and Figure 5 As shown, the adjacent side surfaces of the driving ends 54b of the two push rods 54 are also respectively provided with second latching teeth 54c that are kept in mutual engagement when the two push rods 54 rotate around the fourth pivot 543. In this embodiment, the driving ends 54b of the two push rods 54 are also engaged with each other through the second latching teeth 54c, thereby ensuring synchronization when the two push rods 54 rotate, and the structure is more stable.

[0055] In an optional embodiment of the present invention, Figure 5 , Figure 11-Figure 12 As shown, the pressing seat 3 includes:

[0056] The base 30 has one end which is linked to the driving end of the push rod 54, and the base 30 is also provided with a guide hole 301 which penetrates the base 30 along the sliding direction of the pressing seat 3;

[0057] A telescopic block 32 is arranged on a side of the base 30 away from the mounting base 1, and a guide column 321 corresponding to the guide hole 301 of the telescopic block 32 protrudes toward the side of the base 30, and a non-slip pad 323 is also arranged on the side away from the base 30, and an anti-detachment structure 33 is also arranged between the telescopic block 32 and the base 30 to prevent the telescopic block 32 from detaching from the base 30; and

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

[0059] 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 through an anti-slip pad 323, which can effectively prevent the telescopic block 32 from sliding relative to the pressed wall, and the elastic element 34 can cause the telescopic block 32 to 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 moves, which is convenient for assembly; and an anti-slip structure 33 is used to prevent the telescopic block 32 from detaching; and the guide column 321 and the guide hole 301 are plugged and matched with each other, which can effectively guide the movement of the telescopic block 32 relative to the base 30 and improve the stability of the movement of the telescopic block 32. In a specific implementation, the elastic element 34 can be implemented by a coil spring, a compression spring, etc. In the embodiment, a coil spring sleeved on the guide column 321 is used, and a plurality of them can be set accordingly, so as to improve the elastic thrust. In addition, in order to prevent the telescopic block 32 from being separated from the base 30, there are many implementation methods of the anti-separation structure 33, for example: Figure 11 to Figure 12 As shown, the anti-slip groove 330 and the anti-slip elastic hook 332 are hooked together to prevent slipping, or the anti-slip groove is plugged into the anti-slip pin, or anti-slip blocks are respectively provided on the telescopic block 32 and the base 30 for abutting against each other.

[0060] On the other hand, Figures 1 to 3 As shown, the embodiment of the utility model provides a curtain, including 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 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.

[0061] 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 punch-free installation device for a curtain upper beam, comprising a mounting seat with one end fixed to the end of the upper beam, a pressing seat assembled on the mounting seat in a linear reciprocating manner for pressing against a wall on one side of the window body, and an adjusting mechanism assembled on the mounting seat for driving the pressing seat to slide linearly and reciprocatingly relative to the end of the upper beam, characterized in that: The regulating mechanism comprises: A double-headed screw assembled on the mounting seat and fixed relative to the mounting seat in the axial direction, wherein the opposite ends of the double-headed screw are respectively provided with a first external thread and a second external thread with opposite spiral directions, and at least one end is exposed from the mounting seat as an operating end; Two nuts respectively threadedly connected to the first external thread and the second external thread at both ends of the double-start screw and synchronously moving toward or away from each other in the axial direction under the drive of the double-start screw; and Two push rods are symmetrically arranged relative to a symmetry plane passing through the midpoint of the distance between the two nuts and perpendicular to the axial direction of the double-headed screw. One end of the two push rods serves as a linkage end and is transmission-connected to the two nuts one-to-one and moves synchronously driven by the two nuts. The other ends of the two push rods serve as driving ends and are assembled on the pressure seat as driving ends and are relatively fixed to the pressure seat in the sliding direction of the pressure seat. When the linkage end moves synchronously with the nut, the driving end drives the pressure seat to slide accordingly.

2. The curtain upper beam punch-free installation device according to claim 1, characterized in that: The regulating mechanism also includes: Two support rods are symmetrically arranged relative to the symmetry plane, and one end of each support rod is pivotally connected to the mounting seat by means of a first pivot as a pivot end, and the other ends of the two support rods are pivotally connected to the two nuts one by one by means of a second pivot as support ends, and the central axes of the first pivot and the second pivot are perpendicular to the axial direction of the double-headed screw.

3. The curtain upper beam punch-free installation device according to claim 1 or 2, characterized in that: The linkage ends of the two push rods are directly pivotally connected to the two nuts in a one-to-one correspondence by means of a third pivot.

4. The curtain upper beam punch-free installation device according to claim 3, characterized in that: The driving ends of the two push rods are pivotally connected to the pressure seat by means of a fourth pivot, and the third pivot and the fourth pivot are parallel to and perpendicular to the axial direction of the double-headed screw; or, the pressure seat is provided with a guide groove extending parallel to the axial direction of the double-headed screw, and the driving ends of the two push rods are provided with rollers and the rollers are correspondingly arranged in the guide grooves.

5. The curtain upper beam punch-free installation device according to claim 1 or 2, characterized in that: The regulating mechanism also includes: A telescopic assembly is formed by two connecting rods hinged in an X shape by means of a hinge axis, one end of the two connecting rods is pivoted to the two nuts one by one by means of a third pivot and the other end is pivoted to the linkage ends of the two push rods one by one by means of a fifth pivot, the hinge axis, the third pivot and the fifth pivot are parallel and perpendicular to the axial direction of the double-headed screw.

6. The curtain upper beam punch-free installation device according to claim 5, characterized in that: Two groups of telescopic components arranged parallel to each other are provided, and pivot holes are opened at opposite ends of each connecting rod. The opposite sides of each nut coaxially protrude outward to form two third pivots pivotally connected to the pivot holes on the corresponding ends of the corresponding connecting rods of two telescopic components belonging to different groups. The push rod is I-shaped and includes two cross bar parts arranged parallel to each other and a connecting part connected between the middle parts of the two cross bar parts. A pivot part is provided at one end of each cross bar part. Each of the fifth pivots corresponds to the pivot holes penetrating the corresponding ends of the corresponding connecting rods of two telescopic components belonging to different groups and the two ends are correspondingly pivotally connected to the pivot parts of the two cross bar parts of a corresponding push rod.

7. The curtain upper beam punch-free installation device according to claim 2, characterized in that: The adjacent side surfaces of the pivotal ends of the two support rods are also respectively provided with first latching teeth which are kept in mutual engagement when the two support rods rotate around the first pivot.

8. The curtain upper beam punch-free installation device according to claim 4, characterized in that: The adjacent side surfaces of the driving ends of the two push rods are also respectively provided with second latching teeth which keep mutually meshing when the two push rods rotate around the fourth pivot.

9. The curtain upper beam punch-free installation device according to claim 1, characterized in that: The pressing seat comprises: A base, one end of which is linked to the driving end of the push rod, and the base is also provided with a guide hole penetrating the base along the sliding direction of the pressing seat; A telescopic block is arranged on a side of the base away from the mounting base, the telescopic block protrudes toward a side of the base corresponding to a guide column inserted into the guide hole, and a non-slip pad is also arranged on the side away from the base, and an anti-slip structure is also arranged between the telescopic block and the base to prevent the telescopic block from being separated from the base; and The elastic element is arranged between the base and the telescopic block, and two opposite ends thereof are respectively abutted against the base and the telescopic block.

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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