CN222840801U - Curtain bracket mounting mechanism - Google Patents

Abstract

The utility model relates to the technical field of curtains and discloses a curtain bracket mounting mechanism which comprises a bracket and a roller shutter rod assembly, wherein a mounting shaft capable of sliding and stretching laterally is arranged on the roller shutter rod assembly, the mounting shaft is movably sleeved on the inner side of the roller shutter rod assembly, the mounting shaft is provided with an extending position and a shrinking position when stretching, a mounting hole is arranged on the bracket and is used for being inserted with the mounting shaft in the extending position, an elastic piece is arranged between the mounting shaft and the roller shutter rod assembly and used for driving the mounting shaft to extend outwards, and a first positioning mechanism and a second positioning mechanism are arranged between the roller shutter rod assembly and the mounting shaft. The curtain bracket mounting mechanism disclosed by the utility model has the advantages that the mounting shaft is switched to the extending position and the shrinking position through the switching part, the mounting difficulty is reduced, the operation is convenient and fast, the mounting shaft can be locked through the first locking and unlocking mechanism after the curtain bracket mounting mechanism is mounted, the problem that the rolling rod component falls down due to the fact that the mounting shaft is touched inwards by mistake is avoided, and the curtain bracket mounting mechanism is safe and reliable to use.

Description

Curtain bracket mounting mechanism

Technical Field

The utility model relates to the technical field of curtains, in particular to a curtain bracket mounting mechanism.

Background

The curtain is a common household ornament and is mainly used for shading and decorating. The curtain basically comprises two parts, namely curtain cloth and a rolling rod, wherein the curtain cloth is connected with the rolling rod, and the curtain is opened or rolled up by pulling a pull rope. The curtain rod is generally mounted on a wall through a bracket, the curtain rod is mounted on the bracket in a rotating mode through parts such as bolts, the existing curtain mounting structures comprise the bracket and the curtain rod, a mounting shaft and an elastic piece used for driving the mounting shaft to extend are arranged at the side end of the curtain rod, the mounting shaft is in an extending state in normal state, the mounting shaft can retract under the action of external force, a mounting hole corresponding to the mounting shaft is formed in the bracket, the mounting shaft can rotate in the mounting hole, when the curtain rod is mounted, a mounting person needs to push the mounting shaft inwards through the external force, the external force is needed to keep the pushing state, meanwhile, the mounting shaft needs to be aligned with the mounting hole, the mounting shaft is loosened after the alignment to extend and reset under the action of the elastic piece, so that the mounting shaft extends into the mounting hole to finish mounting, mounting difficulty is high, mounting operation is inconvenient, in addition, the mounting structure can be mistakenly pushed into the mounting shaft to enable the mounting hole, and the curtain rod can fall down when a user sweeps, wipes the bracket or other operations, and the curtain rod can not be damaged by accident, so that the curtain rod can fall off or the curtain rod is damaged by accident.

Disclosure of utility model

In order to solve at least one aspect of the problems, the utility model provides a curtain bracket mounting mechanism, which comprises a bracket and a rolling rod assembly, wherein a mounting shaft capable of sliding and stretching laterally is arranged on the rolling rod assembly, the mounting shaft is movably sleeved on the inner side of the rolling rod assembly, the mounting shaft is provided with an extending position and a retracting position when stretching, the bracket is provided with a mounting hole, the mounting hole is used for being inserted with the mounting shaft in the extending position, an elastic piece is arranged between the mounting shaft and the rolling rod assembly, the elastic piece is used for driving the mounting shaft to extend, a first positioning mechanism and a second positioning mechanism are arranged between the rolling rod assembly and the mounting shaft, the first positioning mechanism is used for positioning the mounting shaft in the extending position, the second positioning mechanism is used for positioning the mounting shaft in the retracting position, the rolling rod assembly comprises a switching part used for driving the mounting shaft to switch between the extending position and the retracting position, an elastic piece is arranged between the mounting shaft and the rolling rod assembly, the rolling rod assembly is convenient to lock the rolling rod assembly, and the problem of the rolling rod assembly can be prevented from being accidentally locked by the switching shaft mounting shaft and the rolling rod assembly after the rolling rod assembly is locked.

Optionally, the first positioning mechanism includes a positioning protrusion and a first positioning groove corresponding to the positioning protrusion, the second positioning mechanism includes a positioning protrusion and a second positioning groove corresponding to the positioning protrusion, the positioning protrusion is disposed on the mounting shaft, and the first positioning groove and the second positioning groove are both disposed on the roller shutter rod assembly.

Optionally, the shutter rod assembly further comprises a mounting seat and a rotating sleeve capable of rotating circumferentially relative to the mounting seat, the mounting shaft is slidably arranged on the mounting seat along the axial direction of the mounting shaft, the first positioning groove and the second positioning groove are both arranged on the rotating sleeve, the switching part comprises a switching rotary table and an arc-shaped guide inclined surface, the switching rotary table is fixedly connected with the rotating sleeve, the arc-shaped guide inclined surface is arranged on the rotating sleeve and is positioned between the first positioning groove and the second positioning groove, the positioning protrusion abuts against the arc-shaped guide inclined surface, and the switching rotary table is used for driving the rotating sleeve to rotate circumferentially so that the positioning protrusion slides along the arc-shaped guide inclined surface.

Optionally, the positioning protrusion is provided with a first arc guide surface, the notch of the first positioning groove is provided with a second arc guide surface matched with the first arc guide surface, and the notch of the second positioning groove is provided with a third arc guide surface matched with the first arc guide surface.

Optionally, the installation shaft is provided with spacing protruding along self axial direction extension, be provided with on the mount pad with spacing groove that spacing protruding corresponds, spacing protruding corresponds card goes into in the spacing groove, in order to restrict the installation shaft is relative the mount pad takes place circumference rotation.

Optionally, the rotary sleeve is circumferentially provided with a ring groove, the mounting seat is provided with a limit pin, and one end of the limit pin is arranged in the ring groove to limit the axial movement of the rotary sleeve relative to the mounting seat.

Optionally, a first locking and unlocking mechanism is arranged between the roller shutter rod assembly and the installation shaft and used for locking/unlocking the installation shaft at the overhanging position, the first locking and unlocking mechanism comprises the positioning protrusion and a limiting clamping groove corresponding to the positioning protrusion, the limiting clamping groove is arranged on the rotary sleeve, when locking is performed, the positioning protrusion is clamped into the limiting clamping groove, the limiting clamping groove is used for limiting the positioning protrusion to slide along the axial direction of the installation shaft, and when unlocking is performed, the positioning protrusion is separated from the limiting clamping groove.

Optionally, the installation axle includes axle body, first stop collar and second stop collar, first stop collar axial slip endotheca in the axle body, second stop collar axial slip endotheca in the axle body, be provided with on the axle body and be used for right first stop collar spacing first spacing step and be used for right spacing second spacing step of second stop collar, the elastic component for the butt in first stop collar with roll up first compression spring between the curtain pole subassembly, the butt has second compression spring between first stop collar and the second stop collar.

Optionally, a second locking release lock mechanism is arranged between the mounting seat and the rotating sleeve, the second locking release lock mechanism is used for locking/releasing the mounting seat and the rotating sleeve, the second locking release lock mechanism comprises a sliding bayonet lock and a clamping groove corresponding to the sliding bayonet lock, the sliding bayonet lock is arranged on the mounting seat and slides along the radial direction of the mounting seat, and the clamping groove is arranged on the rotating sleeve and is distributed in a plurality of annular ways along the circumferential direction of the rotating sleeve, and when one end of the sliding bayonet lock is clamped with one of the clamping grooves, the rotating sleeve is limited to rotate circumferentially relative to the mounting seat.

Optionally, the sliding bayonet lock is provided with a buckle portion, the mounting seat is provided with a third positioning groove and a fourth positioning groove corresponding to the buckle portion, when one end of the sliding bayonet lock is clamped with one of the clamping grooves, the buckle portion is clamped and positioned with the third positioning groove, and when one end of the sliding bayonet lock is separated from the clamping groove, the buckle portion is clamped and positioned with the fourth positioning groove.

Compared with the prior art, the curtain bracket mounting mechanism has the advantages that the mounting shaft is switched to the extending position and the shrinking position through the switching component, mounting difficulty is reduced, operation is convenient and fast, the mounting shaft can be locked through the first locking release locking mechanism after mounting, the problem that a rolling curtain rod component falls down due to the fact that the mounting shaft is in wrong touch and shrinking is avoided, the curtain bracket mounting mechanism is safe and reliable in use, the first arc-shaped guide surface is arranged on the positioning protrusion, the second arc-shaped guide surface matched with the first arc-shaped guide surface is arranged at the notch of the first positioning groove, the positioning protrusion slides out of the first positioning groove conveniently, the third arc-shaped guide surface matched with the first arc-shaped guide surface is arranged at the notch of the second positioning groove, the positioning protrusion slides out of the second positioning groove conveniently, the problem that the locking protrusion cannot slide out is avoided, the curtain bracket mounting mechanism is reliable in use, when the mounting shaft is in the extending position, the shrinking position and in locking state, the corresponding clamping groove and the sliding clamping pin are respectively clamped and limited, the sliding clamping pin cannot rotate mistakenly, the sliding clamping pin cannot slide out and the sliding locking mechanism cannot be displaced easily after the sliding clamping pin is pushed into the notch.

Drawings

FIG. 1 is a perspective view of a window covering bracket mounting mechanism of the present utility model;

FIG. 2 is a cross-sectional view of the window covering bracket mounting mechanism of the present utility model;

FIG. 3 is a schematic view of the structure of the mounting hole of the curtain bracket mounting mechanism of the present utility model;

FIG. 4 is a schematic structural view of a second stop collar portion of the window covering bracket mounting mechanism of the present utility model;

FIG. 5 is a schematic view of the sliding bayonet portion of the window covering bracket mounting mechanism of the present utility model;

FIG. 6 is a schematic view of a portion of a mounting base of a window covering bracket mounting mechanism of the present utility model;

FIG. 7 is a schematic view of the structure of the mounting shaft portion of the window covering bracket mounting mechanism of the present utility model;

FIG. 8 is a schematic view of a rotating sleeve of a window covering bracket mounting mechanism according to the present utility model;

FIG. 9 is a schematic view of the structure of the shaft body of the window covering bracket mounting mechanism of the present utility model;

The corresponding part names of the reference numerals in the figure are 1 a bracket, 101 a mounting hole, 2 a mounting shaft, 21 a limit projection, 22 a shaft body, 23 a first limit sleeve, 24 a second limit sleeve, 241 a spline, 25 a first limit step, 26 a second limit step, 27 a second compression spring, 3 an elastic piece, 41 a positioning projection, 411 a first arc guide surface, 42 a first positioning groove, 421 a second arc guide surface, 43 a second positioning groove, 431 a third arc guide surface, 5 a mounting seat, 51 a limit groove, 52 a limit pin, 53 a third positioning groove, 54 a fourth positioning groove, 6 a rotating sleeve, 61 a ring groove, 7a switching part, 71 a switching turntable, 72 an arc guide inclined surface, 81 a limit clamping groove, 91 a sliding clamping pin, 92 a clamping groove, 93 a clamping part, 10 a curtain rolling rod assembly and 11 a curtain rolling rod.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it is to be understood that the terms "upper", "lower", etc. indicate an orientation or positional relationship based on the orientation or positional relationship when the product is normally used.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1-9, an embodiment of the present utility model provides a curtain bracket mounting mechanism, including a bracket 1 and a roller shutter rod assembly 10, wherein a mounting shaft 2 capable of sliding and stretching laterally is provided on the roller shutter rod assembly 10, the mounting shaft 2 is horizontally slid to realize the functions of extending out of the roller shutter rod assembly 10 and retracting into the roller shutter rod assembly 10, and the axis of the mounting shaft 2 is parallel to the horizontal plane; the installation shaft 2 is movably sleeved inside the roller shutter rod assembly 10, the installation shaft 2 has an extending position and an inward shrinking position when extending and contracting, the bracket 1 is provided with an installation hole 101, the installation hole 101 is used for being inserted with the installation shaft 2 in the extending position to finish installation, an elastic piece 3 is arranged between the installation shaft 2 and the roller shutter rod assembly 10, the elastic piece 3 is used for driving the installation shaft 2 to extend outwards, a first positioning mechanism and a second positioning mechanism are arranged between the roller shutter rod assembly 10 and the installation shaft 2, the first positioning mechanism is used for positioning the installation shaft 2 in the extending position, the second positioning mechanism is used for positioning the installation shaft 2 in the inward shrinking position, the roller shutter rod assembly 10 comprises a switching part 7 used for driving the installation shaft 2 to switch between the extending position and the inward shrinking position, the installation shaft 2 is positioned in the inward shrinking position through the second positioning mechanism when being installed, the installation shaft 2 is aligned with the installation hole 101 to enable the installation shaft 2 to fall into the installation hole 101 after being popped out, the installation shaft 2 is switched from the inward shrinking position through the switching part 7 to the extending position, the installation shaft 2 is positioned in the extending position through the first positioning mechanism when the installation shaft 2 is popped out of the second positioning mechanism, the installation shaft 2 is required to be conveniently pulled out of the inside the installation position through the switching part 101 when being positioned in the inward shrinking position, the curtain bracket mounting mechanism is convenient to detach, the mounting shaft is switched to the extending position and the shrinking position through the switching part, the mounting difficulty is reduced, the operation is convenient and fast, the mounting shaft can be locked through the first locking release locking mechanism after the curtain bracket mounting mechanism is mounted, the problem that the rolling rod component falls down due to the fact that the mounting shaft is touched by mistake and shrinking is avoided, and the curtain bracket mounting mechanism is safe and reliable to use.

Referring to fig. 2, 5, 7, 8 and 9, the first positioning mechanism includes a positioning protrusion 41 and a first positioning groove 42 corresponding to the positioning protrusion 41, the second positioning mechanism includes a positioning protrusion 41 and a second positioning groove 43 corresponding to the positioning protrusion 41, and openings of the first positioning groove 42 and the second positioning groove 43 face to the right; the positioning bulge 41 is arranged on the arc-shaped side wall of the mounting shaft 2, the first positioning groove 42 and the second positioning groove 43 are arranged on the roller shutter rod assembly 10, when the mounting shaft 2 is in an extended position, the left end of the positioning bulge 41 falls into the first positioning groove 42 to be positioned, when the mounting shaft 2 is in a retracted position, the left end of the positioning bulge 41 falls into the second positioning groove 43 to be positioned, the mounting shaft 2 is provided with an elastic force for driving the mounting shaft 2 to eject leftwards under the elastic force of an elastic piece, so that the left end of the positioning bulge 41 can fall into the corresponding positioning groove and abut against the groove wall of the positioning groove to be positioned, the roller shutter rod assembly 10 also comprises a mounting seat 5 and a rotating sleeve 6 which can rotate circumferentially relative to the mounting seat 5, the roller shutter rod assembly 10 also comprises a roller shutter rod 11 which is connected with the mounting seat 5 and rotates synchronously, the mounting shaft 2 is arranged on the rotating sleeve 6 in a sliding manner along the axial direction of the mounting seat 5, the switching part 7 comprises a switching 71 and an arc-shaped guide 72, the switching turntable 71 is integrally connected with the rotating sleeve 6 to drive the rotating sleeve 71 to rotate circumferentially and abut against the arc-shaped guide 72, the rotating sleeve 71 is arranged on the arc-shaped guide sleeve 6 to rotate circumferentially and synchronously rotate circumferentially and rotatably guide the roller shutter rod assembly 7 is positioned on the rotating sleeve 6, the rotating sleeve 72 is positioned on the rotating sleeve 72, when the mounting shaft is switched from the retracted position to the extended position, the switching turntable 71 is rotated by external force (by hand) in the forward direction (as shown by the arrow in fig. 6), the rotating sleeve 6 is driven to rotate in the forward direction, so that the positioning protrusion 41 is separated from the first positioning groove, then slides into the second positioning groove along the arc-shaped guiding bevel 72, at the moment, the switching operation is finished by loosening the rotating switching turntable 71, when the mounting shaft is switched from the extended position to the extended position, the switching turntable 71 is rotated by external force in the reverse direction (the direction opposite to the forward direction), the rotating sleeve 6 is driven to rotate in the reverse direction, so that the positioning protrusion 41 is separated from the second positioning groove, then slides into the first positioning groove along the arc-shaped guiding bevel 72 (the process can be finished automatically by the elastic force of the elastic piece), at the moment, the switching operation is finished by loosening the rotating switching turntable 71, and the operation is convenient.

Referring to fig. 2, 5, 7, 8 and 9, a first arc guide surface 411 is arranged on the positioning protrusion 41, a second arc guide surface 421 matched with the first arc guide surface 411 is arranged at the notch of the first positioning groove 42, so that the positioning protrusion 41 can slide out of the first positioning groove 42, a third arc guide surface 431 matched with the first arc guide surface 411 is arranged at the notch of the second positioning groove 43, so that the positioning protrusion 41 can slide out of the second positioning groove 43, the problem that the clamping stagnation cannot slide out is avoided, the positioning device is reliable in use, a limiting protrusion 21 is arranged on the mounting shaft 2 in an extending mode along the axial direction of the mounting shaft, a limiting groove 51 corresponding to the limiting protrusion 21 is arranged on the mounting seat 5, the limiting protrusion 21 is correspondingly clamped into the limiting groove 51, so that the mounting shaft 2 can only slide along the axial direction of the mounting seat 5, a ring groove 61 is circumferentially arranged on the rotating sleeve 6, a limiting pin 52 is arranged on the mounting seat 5, one end of the limiting pin 52 is limited in the ring groove 61, so that the rotating sleeve 6 can only rotate circumferentially and the mounting seat 6 can rotate circumferentially.

Referring to fig. 5-9, a first locking release mechanism is arranged between the shutter rod assembly 10 and the mounting shaft 2 and is used for locking/releasing the mounting shaft 2 in an extended position, the first locking release mechanism comprises a positioning protrusion 41 and a limiting clamping groove 81 corresponding to the positioning protrusion 41, the limiting clamping groove 81 is arranged on the rotating sleeve 6, when the shutter rod assembly is locked, when the mounting shaft is in the extended position, the positioning protrusion 41 is clamped into the limiting clamping groove 81 by rotating the switching turntable 71 in the reverse direction, the limiting clamping groove 81 is used for limiting the positioning protrusion 41 to slide along the axial direction of the mounting shaft 2, the situation that the mounting shaft 2 is directly touched by an external force to axially slide by mistake and then the risk that the shutter rod assembly falls due to the fact that the mounting shaft 2 is in a wrong way is avoided, when the shutter rod assembly is released, the positioning protrusion 41 is separated from the limiting clamping groove 81, the mounting shaft 2 can be driven by an external force to shrink in a state, and a conventional mounting mode of directly jacking the mounting shaft 2 can be realized.

Referring to fig. 2, 4 and 5, the installation shaft 2 comprises a shaft body 22, a first limit sleeve 23 and a second limit sleeve 24, the first limit sleeve 23 axially slides and is sleeved in the shaft body 22, the second limit sleeve 24 axially slides and is sleeved in the shaft body 22, a first limit step 25 for limiting the first limit sleeve 23 and a second limit step 26 for limiting the second limit sleeve 24 are arranged on the shaft body 22, the elastic piece 3 is a first compression spring abutted between the first limit sleeve 23 and the roller shutter rod assembly 10, the shaft body 22 is driven to pop out leftwards by the first compression spring, a second compression spring 27 abutted between the first limit sleeve 23 and the second limit sleeve 24 is arranged on the second limit sleeve 24, a spline 241 is arranged on the second limit sleeve 24 and is connected with the shaft body 22 by the spline, the second limit sleeve 24 is provided with a spline groove corresponding to the spline 241, so that the second limit sleeve 24 can axially slide in the spline groove of the shaft body 22 along the shaft body 22, a person can conveniently use a corresponding spline to drive the spline groove of the shaft body 22, and thus the shaft 22 can be switched relative to the rotation position of the shaft body 71, and the rotating disc is switched, and the locking and the position of the rotating disc is switched.

Referring to fig. 1, 2, 4, 5 and 8, a second locking and unlocking mechanism is arranged between the mounting seat 5 and the rotating sleeve 6, the second locking and unlocking mechanism is used for locking/unlocking the mounting seat 5 and the rotating sleeve 6, the second locking and unlocking mechanism comprises a sliding bayonet lock 91 and a clamping groove 92 corresponding to the sliding bayonet lock 91, the sliding bayonet lock 91 is arranged on the mounting seat 5 and slides along the radial direction of the mounting seat 5, the clamping groove 92 is arranged on the rotating sleeve 6 and is distributed in a plurality of annular shapes along the circumferential direction of the rotating sleeve 6, and in the embodiment, the clamping grooves 92 are distributed in four annular shapes at equal intervals; when one end of the sliding bayonet lock 91 is engaged with one of the engaging grooves 92, the rotation sleeve 6 is limited to rotate circumferentially relative to the mounting seat 5, in this embodiment, when the mounting shaft is in an extended position, a retracted position and a locking state, the corresponding engaging groove 92 is engaged with the sliding bayonet lock 91 to limit the rotation sleeve 6, so that no false rotation occurs to the sliding bayonet lock 91, the sliding bayonet lock 91 is provided with the engaging portion 93, the mounting seat 5 is provided with the third positioning groove 53 and the fourth positioning groove 54 corresponding to the engaging portion 93, when the sliding bayonet lock 91 is pushed in, namely when one end of the sliding bayonet lock 91 is engaged with one of the engaging grooves 92, the engaging portion 93 is engaged with the third positioning groove 53 to be positioned, and when the sliding bayonet lock 91 is pulled out, namely when one end of the sliding bayonet lock 91 is disengaged from the engaging groove 92, the engaging portion 93 is engaged with the fourth positioning groove 54 to enable the sliding bayonet lock 91 to be pulled out and displacement is not easy to occur after the sliding bayonet lock 91 is pushed in, so that false locking/unlocking of the second locking mechanism is avoided, and the window curtain is reliably used, in this utility model, when the sliding bayonet lock 91 is first mounted in the position of the mounting seat 71, at this time, the retracted mounting shaft is aligned with the mounting hole 101, the switching dial 71 is rotated so that the mounting shaft is inserted into the mounting hole 101 at the extended position, the switching dial 71 is rotated so that the mounting shaft is locked, and finally the sliding bayonet 91 is pushed in to complete the mounting.

The curtain bracket mounting mechanism is characterized in that the mounting shaft is switched to an extending position and a shrinking-in position through the switching component, mounting difficulty is reduced, the mounting shaft is conveniently and fast to operate, the mounting shaft can be locked through the first locking release locking mechanism after mounting, the problem that a rolling curtain rod component falls down due to the fact that the mounting shaft is touched inwards by mistake is avoided, the mounting mechanism is safe and reliable in use, the first arc-shaped guide surface is arranged on the positioning protrusion, the second arc-shaped guide surface matched with the first arc-shaped guide surface is arranged at the notch of the first positioning groove, the positioning protrusion can conveniently slide out of the first positioning groove, the third arc-shaped guide surface matched with the first arc-shaped guide surface is arranged at the notch of the second positioning groove, the positioning protrusion can conveniently slide out of the second positioning groove, the problem that clamping stagnation cannot slide out is avoided, the mounting mechanism is reliable in use, the corresponding clamping grooves are respectively clamped and limited by the sliding clamping pins when the mounting shaft is in the extending position, the shrinking-in position and the locking state, the sliding clamping pins cannot rotate by mistake, the sliding clamping pins cannot be pulled out and cannot easily displace after being pushed in the sliding clamping locking mechanism, and the locking mechanism is reliably locked by mistake.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (10)

1. A curtain support mounting mechanism is characterized by comprising a support (1) and a roller shutter rod assembly (10), wherein a mounting shaft (2) capable of sliding and stretching laterally is arranged on the roller shutter rod assembly (10), the roller shutter rod assembly (10) is movably sleeved on the inner side of the roller shutter rod assembly (10), the mounting shaft (2) is provided with an extending position and an inward shrinking position when stretching, the support (1) is provided with a mounting hole (101), the mounting hole (101) is used for being inserted with the mounting shaft (2) in the extending position, an elastic piece (3) is arranged between the mounting shaft (2) and the roller shutter rod assembly (10), the elastic piece (3) is used for driving the mounting shaft (2) to extend, a first positioning mechanism and a second positioning mechanism are arranged between the roller shutter rod assembly (10) and the mounting shaft (2), the first positioning mechanism is used for positioning the mounting shaft (2) in the extending position, and the second positioning mechanism is used for positioning the mounting shaft (2) in the extending position and the second positioning mechanism is used for driving the roller shutter rod assembly (7) to extend between the roller shutter rod assembly (10) and the inner shrinking position.

2. A curtain holder mounting mechanism as claimed in claim 1, wherein the first positioning mechanism comprises a positioning protrusion (41) and a first positioning groove (42) corresponding to the positioning protrusion (41), the second positioning mechanism comprises the positioning protrusion (41) and a second positioning groove (43) corresponding to the positioning protrusion (41), the positioning protrusion (41) is arranged on the mounting shaft (2), and the first positioning groove (42) and the second positioning groove (43) are both arranged on the roller shutter assembly (10).

3. The curtain bracket mounting mechanism according to claim 2, wherein the curtain rod assembly (10) further comprises a mounting seat (5) and a rotating sleeve (6) capable of rotating circumferentially relative to the mounting seat (5), the mounting shaft (2) is slidably arranged on the mounting seat (5) along the axial direction of the mounting shaft, the first positioning groove (42) and the second positioning groove (43) are both arranged on the rotating sleeve (6), the switching component (7) comprises a switching turntable (71) and an arc-shaped guide inclined surface (72), the switching turntable (71) is fixedly connected with the rotating sleeve (6), the arc-shaped guide inclined surface (72) is arranged on the rotating sleeve (6) and is positioned between the first positioning groove (42) and the second positioning groove (43), the positioning protrusion (41) is propped against the arc-shaped guide inclined surface (72), and the switching turntable (71) is used for driving the rotating sleeve (6) to rotate circumferentially so that the positioning protrusion (41) slides along the arc-shaped guide inclined surface (72).

4. A curtain holder mounting mechanism as claimed in claim 3, wherein the positioning projection (41) is provided with a first arcuate guide surface (411), a second arcuate guide surface (421) cooperating with the first arcuate guide surface (411) is provided at the notch of the first positioning groove (42), and a third arcuate guide surface (431) cooperating with the first arcuate guide surface (411) is provided at the notch of the second positioning groove (43).

5. A curtain bracket mounting mechanism as claimed in claim 3, wherein the mounting shaft (2) is provided with a limit projection (21) extending in the axial direction thereof, the mounting seat (5) is provided with a limit groove (51) corresponding to the limit projection (21), and the limit projection (21) is correspondingly clamped into the limit groove (51) to limit circumferential rotation of the mounting shaft (2) relative to the mounting seat (5).

6. A curtain holder mounting mechanism as claimed in claim 3, wherein the rotary sleeve (6) is provided with a circumferential groove (61), the mounting seat (5) is provided with a limit pin (52), and one end of the limit pin (52) is arranged in the circumferential groove (61) to limit the axial movement of the rotary sleeve (6) relative to the mounting seat (5).

7. A curtain holder mounting mechanism as claimed in claim 3, characterized in that a first lock release mechanism is provided between the roller shutter lever assembly (10) and the mounting shaft (2), the first lock release mechanism being adapted to lock/release the mounting shaft (2) in the extended position, the first lock release mechanism comprising the positioning protrusion (41) and a limit catch groove (81) corresponding to the positioning protrusion (41), the limit catch groove (81) being provided on the rotating sleeve (6), the positioning protrusion (41) being caught in the limit catch groove (81) during locking, the limit catch groove (81) being adapted to restrict the positioning protrusion (41) from sliding in the axial direction of the mounting shaft (2), the positioning protrusion (41) being disengaged from the limit catch groove (81) during locking.

8. A curtain bracket mounting mechanism as claimed in claim 1, wherein the mounting shaft (2) comprises a shaft body (22), a first limit sleeve (23) and a second limit sleeve (24), the first limit sleeve (23) is axially slidably sleeved in the shaft body (22), the second limit sleeve (24) is axially slidably sleeved in the shaft body (22), a first limit step (25) for limiting the first limit sleeve (23) and a second limit step (26) for limiting the second limit sleeve (24) are arranged on the shaft body (22), the elastic piece (3) is a first compression spring abutted between the first limit sleeve (23) and the roller shutter rod assembly (10), and a second compression spring (27) is abutted between the first limit sleeve (23) and the second limit sleeve (24).

9. A curtain holder mounting mechanism as claimed in claim 3, characterized in that a second locking release lock mechanism is provided between the mounting base (5) and the rotating sleeve (6), the second locking release lock mechanism is used for locking/releasing the mounting base (5) and the rotating sleeve (6), the second locking release lock mechanism comprises a sliding bayonet lock (91) and a locking groove (92) corresponding to the sliding bayonet lock (91), the sliding bayonet lock (91) is arranged on the mounting base (5) and slides along the radial direction of the mounting base (5), the locking groove (92) is arranged on the rotating sleeve (6) and is distributed in a plurality in the circumferential direction of the rotating sleeve (6), and when one end of the sliding bayonet lock (91) is locked with one of the locking grooves (92), the rotating sleeve (6) is limited to rotate circumferentially relative to the mounting base (5).

10. The curtain bracket mounting mechanism according to claim 9, wherein the sliding bayonet (91) is provided with a fastening portion (93), the mounting base (5) is provided with a third positioning groove (53) and a fourth positioning groove (54) corresponding to the fastening portion (93), when one end of the sliding bayonet (91) is fastened to one of the fastening grooves (92), the fastening portion (93) is fastened to the third positioning groove (53) for positioning, and when one end of the sliding bayonet (91) is separated from the fastening groove (92), the fastening portion (93) is fastened to the fourth positioning groove (54) for positioning.