Roller shutter and winding drum mounting device thereof

Abstract

The embodiment of the utility model provides a roller shutter and a winding drum installation device thereof, and the device comprises a support frame, which is provided with a pivot joint part; the supporting bush is used for being inserted and fixed to one end of the winding drum, a storage cavity with an opening is formed in the end, close to the supporting frame, of the supporting bush, a screw joint piece is arranged at the end, away from the opening, of the storage cavity, and a stopping part is formed between the screw joint piece and the opening; the shaft rod is correspondingly connected with the supporting frame and the supporting bush, one end of the shaft rod serves as a pivoting end to be pivoted with the pivoting part of the supporting frame, and the other end of the shaft rod serves as a screwing end to be inserted into the containing cavity of the supporting bush through the opening and to be screwed with the screwing piece; the pivoting end is provided with an abutting table which correspondingly abuts against the surface of the side, facing the supporting lining, of the supporting frame for positioning and a driving part used for driving the shaft rod to rotate; and the clutch ring body is hooped on the shaft rod and applies preset pressure to the shaft rod, and the clutch ring body is provided with an abutting part which correspondingly abuts against the stopping part and is relatively fixed with the supporting bush in the circumferential direction.

Description

Technical Field

[0001] An embodiment of the utility model relates to the technical field of curtain accessories, and particularly relates to a rolling curtain and a winding cylinder installation device thereof. Background Art

[0002] A rolling curtain generally includes a winding cylinder, a curtain cloth wound around the winding cylinder, and a winding cylinder installation device disposed at two ends of the winding cylinder for fixing the winding cylinder to a wall at the top of a window frame.

[0003] The traditional winding cylinder installation device includes a support frame for fixing to a wall, a support bushing inserted and fixed at one end of the winding cylinder, and a shaft rod with one end pivotally disposed in the support bushing and the other end fixed to the support frame. When specifically installing a rolling curtain, an assembler combines the width of the window frame and the length of the winding cylinder. First, install the support frames at predetermined positions corresponding to both sides of the window frame on the wall. Then, insert two support bushings respectively pre-assembled with shaft rods into the two ends of the winding cylinder from the openings at both ends of the winding cylinder and position them inside the winding cylinder. Then, fix the outer ends of the shaft rods extending from both ends of the winding cylinder to the support frame by means of screwing or hooking with a hook.

[0004] However, the inventor found during specific implementation that there is a certain assembly error when the two support frames are installed on the wall, so that the distance between the two support frames cannot be well adapted to the length of the winding cylinder. As a result, after the shaft rod at one end of the winding cylinder is fixed to the support frame, it is difficult for the shaft rod at the other end to accurately align with the corresponding support frame, resulting in repeated debugging and installation during assembly, and the assembly is very troublesome.

[0005] Some existing upper beam punch-free installation devices for curtains can be compatible with size fluctuations within a small range of the upper beam installation space by driving a push rod installed at the end of the upper beam to axially expand and contract relative to the upper beam. However, these upper beam punch-free installation devices for curtains are mainly applied to products such as Roman curtains and shutter curtains. When the curtains are in use, neither the upper beam nor the push rod installed on the upper beam rotates. However, when a rolling curtain is in use, the winding cylinder rotates, resulting in that the existing upper beam punch-free installation devices for curtains cannot be applied to rolling curtain products. Summary of the Utility Model

[0006] The technical problem to be solved by an embodiment of the utility model is to provide a winding cylinder installation device for a rolling curtain, which can improve the size compatibility of installation within a certain range.

[0007] The further technical problem to be solved by an embodiment of the utility model is to provide a rolling curtain, which can improve the size compatibility of installation within a certain range.

[0008] To solve the above technical problems, the embodiments of the utility model provide the following technical solutions: A winding cylinder installation device for a rolling curtain, comprising:

[0009] A support frame for fixing to a corresponding wall, the support frame being provided with a pivoting portion;

[0010] A support bushing for plugging and fixing to one end of a winding cylinder, an accommodation cavity is formed inside the support bushing, an opening is provided at one end close to the support frame, a screwing member is provided at the end of the accommodation cavity away from the opening, and a stopping portion is formed on the cavity wall between the screwing member and the opening;

[0011] A shaft rod corresponding to connect the support frame and the support bushing, one end of the shaft rod is used as a pivoting end to be pivotally connected with the pivoting portion of the support frame, and the other end is used as a screwing end to be inserted into the accommodation cavity of the support bushing through the opening and screwed with the screwing member. The pivoting end is further provided with an abutting platform corresponding to abut and position against the surface of the support frame facing the support bushing and a driving portion for driving the shaft rod to rotate; and

[0012] A clutch ring body sleeved on the shaft rod to apply a predetermined pressure to the shaft rod, the clutch ring body having an abutting portion corresponding to abut against the stopping portion and being circumferentially relatively fixed to the support bushing.

[0013] Further, a sliding groove with an entrance and exit facing the opening direction is formed at the end of the accommodation cavity away from the opening. The screwing member is correspondingly slidably inserted into the sliding groove through the entrance and exit and is circumferentially relatively fixed to the sliding groove. The device further includes an elastic member assembled in the accommodation cavity. The elastic member is arranged to apply an elastic force to the screwing member to urge the screwing member to move outwards of the entrance and exit of the sliding groove, thereby pushing the shaft rod so that the abutting platform remains in abutment with the support frame.

[0014] Further, a screw hole is provided on the end face of the screwing member near the opening, and a screw rod portion for screwing with the screw hole is provided at the screwing end of the shaft rod; or, a screw rod portion is provided at the end of the screwing member near the opening, and a screw hole corresponding to screw with the screw rod portion is provided on the end face of the screwing end of the shaft rod.

[0015] Further, a through hole penetrating the groove wall is further provided on the groove wall of the sliding groove at the end opposite to the entrance and exit. A hooking portion is correspondingly provided at the end of the screwing member away from the shaft rod, which passes through the through hole and is hooked on the peripheral edge of the outer end hole of the through hole to prevent the screwing member from completely sliding out of the sliding groove from the entrance and exit.

[0016] Further, the screwing member is a stepped shaft rod with a thin end and a thick end, and the thick end is screwed with the shaft rod. The elastic member is a spring correspondingly sleeved on the thin end of the screwing member, and the opposite ends of the spring respectively abut against the groove wall at the end of the sliding groove opposite to the entrance and exit and the connecting step surface between the thin end and the thick end.

[0017] Further, first positioning protrusions and second positioning protrusions with a predetermined distance in the axial direction of the shaft rod are arranged on the outer side wall of the shaft rod, and the clutch ring body is assembled between the first positioning protrusion and the second positioning protrusion, and the first positioning protrusion and the second positioning protrusion axially position the clutch ring body.

[0018] Further, the device further includes an end cover fixedly assembled at the opening of the support bushing. A through hole for the pivot end of the shaft rod to pass through is formed in the middle of the end cover. A first abutting protrusion is formed by the inner side surface of the end cover protruding. A second abutting protrusion for abutting against the first abutting protrusion in the circumferential direction when the shaft rod rotates and axially moves relative to the support bushing to define the maximum stroke of the shaft rod protruding outwards relative to the support bushing is formed by the outer side wall of the middle section of the shaft rod protruding accordingly.

[0019] Further, one of the side surfaces where the abutting platform and the support frame abut against each other is a convex spherical surface.

[0020] Further, the stopping portion is a stopping groove recessed from the inner wall of the support bushing. The clutch ring body is a torsion spring with two torsion arms as the abutting portions, and the two torsion arms extend into the stopping groove and respectively abut against the two side walls of the stopping groove; alternatively, the stopping portion is a stopping protrusion protruding from the inner wall of the support bushing. The clutch ring body is a C-shaped snap spring with two free ends as the abutting portions, and the stopping protrusion extends between the two free ends and respectively abuts against the two free ends.

[0021] On the other hand, to solve the above further technical problems, the embodiment of the present utility model provides the following technical solution: A rolling curtain includes a winding cylinder and a winding cylinder mounting device assembled at at least one end of the winding cylinder. The winding cylinder mounting device is the winding cylinder mounting device as described in any one of the above.

[0022] After adopting the above technical solution, the embodiment of the present utility model has at least the following beneficial effects: In the embodiment of the present utility model, a pivot portion is provided on the support frame, a circumferentially fixed screw member is provided on the support bushing, one end of the shaft rod is pivotally connected to the pivot portion of the support frame and the other end is screwed to the screw member, a clutch ring body that applies a predetermined pressure to the shaft rod is also sleeved on the shaft rod, and the clutch ring body is also circumferentially abutted and positioned with a stop portion on the support bushing by an abutting portion, so that the clutch ring body plays a role of a one-way transmission clutch between the support bushing and the shaft rod. When it is necessary to adjust the length of the shaft rod extending relative to the support bushing during the installation of the winding cylinder, a corresponding tool can be used to drive the shaft rod to rotate in a corresponding direction. The clutch ring body can ensure that the support bushing does not rotate synchronously, and the screwed end of the shaft rod will rotate relative to the screw member. Furthermore, the shaft rod axially moves and expands or contracts relative to the support bushing to adapt to the gap between the winding cylinder and the support frame, and can well accommodate the dimensional deviation formed by the installation position error of the support frame; during the normal use of the rolling curtain, when driving the winding cylinder to rotate to wind and unwind the curtain cloth, the static friction force between the clutch ring body and the shaft rod is sufficient to ensure that the support bushing drives the clutch ring body and the shaft rod to rotate synchronously, and the shaft rod will not rotate relative to the screw member, so as not to advance or retreat axially, ensuring the normal lifting and lowering of the curtain cloth. In addition, the shaft rod also abuts against the side surface of the support frame with an abutting platform to ensure that the winding cylinder will not axially move during use, and the stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic exploded view of an optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model and the winding cylinder.

[0024] Figure 2 FIG. is a schematic assembled view of an optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model.

[0025] Figure 3 FIG. is a schematic cross-sectional view along the longitudinal central plane of the winding cylinder of an optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model.

[0026] Figure 4 FIG. is a schematic cross-sectional view along the radial central plane of the shaft rod of an optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model.

[0027] Figure 5 FIG. is a schematic cross-sectional view along the radial central plane of the shaft rod of another optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model.

[0028] Figure 6 FIG. is a schematic cross-sectional view along the radial central plane of the sliding groove of the support bushing of another optional embodiment of the winding cylinder installation device of the rolling curtain of the present utility model.

[0029] Figure 7Schematic diagram of the split structure of the support bushing and the end cover when the first abutting projection and the second abutting projection of an alternative embodiment of the winding cylinder mounting device of the rolling curtain of the present utility model are in abutment. Detailed implementation manners

[0030] The present application will be further described in detail below 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 utility model and are not intended to limit the present utility model. Moreover, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] As Figures 1-5 shown, an alternative embodiment of the present utility model provides a winding cylinder mounting device for a rolling curtain, including:

[0032] A support frame 1 for being fixed to a corresponding wall, and a pivoting portion 10 is provided on the support frame;

[0033] A support bushing 3 for being inserted and fixed to one end of a winding cylinder A. An accommodation cavity 30 with an opening 301 formed at one end close to the support frame 1 is formed inside the support bushing 3. A screw member 32 is provided at one end of the accommodation cavity 30 away from the opening 301, and a stop portion 34 is formed on the cavity wall between the screw member 32 and the opening 301;

[0034] A shaft rod 5 correspondingly connecting the support frame 1 and the support bushing 3. One end of the shaft rod 5 serves as a pivoting end 5a and is pivotally connected to the pivoting portion 10 of the support frame 1, while the other end serves as a screwing end 5b and is inserted into the accommodation cavity 30 of the support bushing 3 through the opening 301 and screwed to the screw member 32. An abutting platform 50 corresponding to and abutting and positioning with the surface of the support frame 1 facing the support bushing 3 is further provided on the pivoting end 5a, and a driving portion 52 for driving the shaft rod 5 to rotate; and

[0035] A clutch ring body 7 sleeved on the shaft rod 5 and applying a predetermined pressure to the shaft rod 5. The clutch ring body 7 has an abutting portion 70 corresponding to and abutting against the stop portion 34 and relatively fixed to the support bushing 3 in the circumferential direction.

[0036] The static friction force between the clutch ring body 7 and the shaft rod 5 is proportional to the pressure of the clutch ring body 7 on the shaft rod 5. By designing an appropriate pressure of the clutch ring body 7 on the shaft rod 5, the clutch ring body 7 can act as a one-way transmission clutch between the support bushing 3 and the shaft rod 5. Specifically, when using a corresponding tool to cooperate with the driving part 50 on the pivoting end 5a to drive the shaft rod 5 to rotate in a corresponding direction, the static friction force between the clutch ring body 7 and the shaft rod 5 will cause the clutch ring body 7 to have a tendency to rotate synchronously with the shaft rod 5. However, since the abutting part 70 of the clutch ring body 7 abuts against the stopping part 34 on the support bushing 3 in the circumferential direction, and the support bushing 3 is relatively fixed to the winding cylinder A and has a large resistance moment to rotation, it is difficult to drive the support bushing 3 and the winding cylinder A to rotate by driving the shaft rod 5 to rotate through the clutch ring body 7. Instead, it will cause a slight elastic deformation at the part of the clutch ring body 7 near the abutting part 70 and slightly open, breaking the original static friction balance between the shaft rod 5 and the clutch ring body 7. The shaft rod 5 will then rotate relative to the clutch ring body 7 (the two will turn into sliding friction), and the threaded end 5b of the shaft rod 5 will rotate relative to the threaded part 32 to generate an axial movement, forming the effect of the shaft rod 5 extending or retracting relative to the support bushing 3 according to different directions. During the normal use of the roller blind, when driving the winding cylinder A to rotate to retract or extend the curtain cloth, the static friction force between the clutch ring body 7 and the shaft rod 5 is sufficient to ensure that the support bushing 3 drives the clutch ring body 7 and the shaft rod 5 to rotate synchronously, and the shaft rod 5 will not rotate relative to the threaded part 32, so it will not move forward or backward axially.

[0037] In an embodiment of the present utility model, a pivoting portion 1010 is provided on the support frame 1, a circumferentially fixed screwing member 32 is provided on the support bushing 3, one end of the shaft rod 5 is pivotally connected to the pivoting portion 10 of the support frame 1 and the other end is screwed to the screwing member 32. A clutch ring body 7 that applies a predetermined pressure to the shaft rod 5 is also sleeved on the shaft rod 5. The clutch ring body 7 is also circumferentially abutted and positioned with a stop portion 34 on the support bushing 3 by an abutting portion 70. Thus, the clutch ring body 7 functions as a one-way transmission clutch between the support bushing 3 and the shaft rod 5. When it is necessary to adjust the length of the shaft rod 5 extending relative to the support bushing 3 during the installation of the winding cylinder A, a corresponding tool can be used to drive the shaft rod 5 to rotate in a corresponding direction. The clutch ring body 7 can ensure that the support bushing 3 does not rotate synchronously, and the screwed end of the shaft rod 5 will rotate relative to the screwing member 32. Furthermore, the shaft rod 5 axially moves and expands or contracts relative to the support bushing 3 to adapt to the gap between the winding cylinder A and the support frame 1, and can well accommodate the dimensional deviation formed due to the installation position error of the support frame 1. During the normal use of the roller shutter, when the winding cylinder A is driven to rotate to wind and unwind the curtain cloth, the static friction force between the clutch ring body 7 and the shaft rod 5 is sufficient to ensure that the support bushing 3 drives the clutch ring body 7 and the shaft rod 5 to rotate synchronously, and the shaft rod 5 will not rotate relative to the screwing member 32, so that it will not advance or retreat axially, ensuring the normal lifting and lowering of the curtain cloth. In addition, the shaft rod 5 also abuts against the side surface of the support frame 1 with an abutting platform 50 to ensure that the winding cylinder A does not axially move during use, and has good stability.

[0038] In an alternative embodiment of the present utility model, as Figure 1 、 Figure 3 and Figure 6As shown, at one end of the storage cavity 30 far from the opening 301, a sliding groove 36 with an access opening 361 facing the direction of the opening 301 is formed. The screwing member 32 is slidably inserted into the sliding groove 36 through the access opening 361 and is circumferentially fixed relative to the sliding groove 36. The device further includes an elastic member 8 assembled in the storage cavity 30. The elastic member 8 is configured to apply an elastic force to the screwing member 32 to urge the screwing member 32 to move outside the access opening 361 of the sliding groove 36, thereby pushing the shaft rod 5 so that the abutting platform 50 remains in abutment with the support frame 1. In this embodiment, the screwing member 32 is slidably assembled along the axial direction of the winding cylinder A in the sliding groove 36 of the support bushing 3. At the same time, an elastic member 8 is added. When assembling the winding cylinder, the length of the shaft rod 5 extending relative to the support bushing 3 can be pre-adjusted, and then an axial pressure is applied to the shaft rod 5 to compress the elastic member 8 and retract appropriately. When the pivoting end 5a of the shaft rod 5 is aligned with the pivoting portion 10 on the support frame 1, the axial pressure applied to the shaft rod 5 is removed, and the elastic member 8 can rebound to push the pivoting end 5a of the shaft rod 5 to the position where it is pivotally connected to the pivoting portion 10, and at the same time, the abutting platform 50 abuts against the support frame 1, thus completing the assembly. The assembly is more convenient, and under the elastic force of the elastic member 8, the abutting platform 50 of the shaft rod 5 always remains in abutment with the support frame 1, which is beneficial to improving the overall stability of the rolling curtain.

[0039] In a specific implementation, to achieve the circumferential fixation between the sliding groove 36 and the screwing member 32, as Figure 1 and Figure 6 shown, the outer contour of the cross-section of the sliding groove 36 and the screwing member 32 can be made to match in a non-circular shape (for example: triangle, square, trapezoid, regular polygon, etc.); alternatively, a sliding groove and a barb can be used in cooperation; or, a pin can be inserted laterally into the sliding groove 36 and the screwing member 32.

[0040] In an alternative embodiment of the present utility model, as Figure 1 and Figure 3 shown, on the end face of the end of the screwing member 32 close to the opening 301, a screw hole 321 is provided, and on the screwing end 5b of the shaft rod 5, a screw rod portion 54 that is screwed with the screw hole 321 is provided; or, on the end of the screwing member close to the opening 301, a screw rod portion is provided, and on the end face of the screwing end 5b of the shaft rod 5, a screw hole corresponding to and screwed with the screw rod portion is provided. This embodiment provides two different structural designs that can achieve the screw connection between the screwing member 32 and the screwing end 5b of the shaft rod 5, which is convenient for flexible selection according to needs in actual applications.

[0041] In an alternative embodiment of the present utility model, as Figure 1 and Figure 7As shown, a through hole 363 penetrating the groove wall is further provided on the groove wall at one end of the sliding groove 36 opposite to the entrance 361. A hook portion 323 is correspondingly provided at one end of the screwing member 32 away from the shaft rod 5. The hook portion 323 passes through the through hole 363 and is hooked on the peripheral edge of the outer end hole of the through hole 363 to prevent the screwing member 32 from completely sliding out of the sliding groove 36 from the entrance 361. In this embodiment, a hook portion 323 is further provided at one end of the screwing member 32 away from the shaft rod 5 to engage with the through hole 363 provided at the corresponding end of the sliding groove 36, so as to prevent the screwing member 32 from completely disengaging from the sliding groove 36. In a specific implementation, the hook portion 323 may be a large-head bolt screwed to one end of the screwing member 32 away from the shaft rod 5 (such as Figure 1 , Figure 3 and Figure 7 shown); alternatively, the hook portion 323 may also be an elastic barb provided at one end of the screwing member 32 away from the shaft rod 5.

[0042] In an alternative embodiment of the present utility model, as Figure 1 and Figure 3 shown, the screwing member 32 is a stepped shaft rod with one end thin and the other end thick, and the thick end 32a is screwed to the shaft rod 5. The elastic member 8 is a spring correspondingly sleeved on the thin end 32b of the screwing member 32. The opposite ends of the spring 8 respectively abut against the groove wall at one end of the sliding groove 36 opposite to the entrance 361 and the connecting step surface 32c between the thin end 32b and the thick end 32a. In this embodiment, the screwing member 32 is designed as a stepped shaft rod with one end thin and the other end thick, which is convenient for assembling the elastic member 8 and reduces the size of the screwing member 32 and the support bushing, so as to better adapt to a winding cylinder with a small diameter.

[0043] In an alternative embodiment of the present utility model, as Figure 1 and Figure 3 shown, first positioning protrusions 56 and second positioning protrusions 58 with a predetermined distance in the axial direction of the shaft rod 5 are provided on the outer side wall of the shaft rod 5. The clutch ring body 7 is assembled between the first positioning protrusion 56 and the second positioning protrusion 58, and the clutch ring body 7 is axially positioned by the first positioning protrusion 56 and the second positioning protrusion 58. In this embodiment, the clutch ring body 7 is also blocked and limited by the first positioning protrusion 56 and the second positioning protrusion 58 from both ends in the axial direction to ensure the stable positioning of the clutch ring body 7. In a specific design, as Figure 7 shown, at least one of the first positioning protrusion 56 and the second positioning protrusion 58 is provided with a guiding arc surface 561 to facilitate the elastic expansion of the clutch ring body 7 and sleeving it between the first positioning protrusion 56 and the second positioning protrusion 58. In addition, the first positioning protrusion 56 and the second positioning protrusion 58 may be a circumferentially continuously extending annular protrusion structure or only a protrusion structure discretely distributed in the circumferential direction.

[0044] In an alternative embodiment of the present utility model, as Figure 1 and Figure 7 shown, the device further includes an end cap 9 fixedly assembled at the opening 301 of the support bushing 3. A through hole 90 for the pivot end 5a of the shaft rod 5 to pass through is formed in the middle of the end cap 9. A first abutting protrusion 92 is formed by the inward convex surface of the end cap 9. A second abutting protrusion 59 is correspondingly formed by the outward convex wall of the middle section of the shaft rod 5 for abutting against the first abutting protrusion 92 in the circumferential direction when the shaft rod 5 rotates and axially moves relative to the support bushing 3 to define the maximum stroke of the shaft rod 5 extending outward relative to the support bushing 3. In this embodiment, by further providing the end cap 9 and arranging the through hole 90 in the middle of the end cap 9 for the pivot end 5a of the shaft rod 5 to extend out, the gap between the shaft rod 5 and the opening 301 of the support bushing 3 is covered by the end cap 9 to prevent foreign objects from entering and affecting the rotation of the shaft rod 5. Moreover, by providing the first abutting protrusion 92 and the second abutting protrusion 59, the two can abut against each other on the side surface to define the maximum extending length of the shaft rod 5 and prevent the shaft rod 5 from disengaging from the support bushing 3.

[0045] In specific implementation, the second abutting protrusion 59 can be arranged on the side of the second positioning protrusion 58 close to the end cap 9, so that the second abutting protrusion 59 and the second positioning protrusion 58 can be integrally formed during production and manufacturing.

[0046] In an alternative embodiment of the present utility model, as Figure 1 shown, one of the side surfaces where the abutting platform 50 and the support frame 1 abut against each other is a convex spherical surface 501. In this embodiment, by designing one of the side surfaces where the abutting platform 50 and the support frame 1 abut against each other as a smooth convex spherical surface 501, the effect of abutting and positioning between the abutting platform 50 and the support frame 1 can be achieved, and the contact area between the two can be reduced, thereby correspondingly reducing the frictional force between the two, which is beneficial to more smoothly pulling the curtain when using the roller blind.

[0047] In an alternative embodiment of the present utility model, as Figure 4 shown, the stopping portion 34 is a stopping groove recessed from the inner wall of the support bushing 3. The clutch ring body 7 is a torsion spring with two torsion arms as the abutting portions 70. The two torsion arms 70 extend into the stopping groove 34 and respectively abut against the two side walls of the stopping groove 34; or, as Figure 5As shown, the stopper 34 is a stopper protrusion formed by protruding from the inner wall of the support bushing 3, and the clutch ring body 7 is a C-shaped retaining spring with two free ends serving as the abutment portions 70, and the stopper protrusion 34 extends between the two free ends 70 and abuts against the two free ends 70 respectively. In this embodiment, the clutch ring body 7 can be realized by using a torsion spring or a C-shaped retaining spring, and can be flexibly selected in practical applications.

[0048] In specific implementation, Figure 1 and Figure 3 As shown, the pivoting portion 10 is an axial hole, the pivoting end 5a of the shaft rod 5 forms a corresponding circular shaft 5c inserted into the axial hole 10, and the driving portion 52 is a driving hole or driving rod provided on the end surface of the circular shaft 5c and having a non-circular cross section, so that the driving portion 54 is exposed from a side opening of the axial hole 10. Of course, it can be understood that the pivoting portion 10 can also be a circular shaft and the pivoting end 5a of the shaft rod 5 can be provided as an axial hole. However, in this solution, the driving portion 52 can only be provided at other locations exposed from the pivoting end 5a, for example, by using a toggle wheel or toggle handle provided on the side of the pivoting end 5a.

[0049] On the other hand, Figure 1 As shown, the embodiment of the utility model provides a rolling curtain, including a winding drum A and a winding drum installation device assembled on at least one end of the winding drum A, and the winding drum installation device is the winding drum installation device as described in the above embodiment. This embodiment can facilitate the installation of the winding drum.

[0050] 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 winding drum installation device for a rolling shutter, comprising a support frame for fixing to a corresponding wall, a support bushing for plugging and fixing to one end of the winding drum, and a shaft connecting the support frame and the support bushing, characterized in that: The support frame is provided with a pivoting portion; A receiving cavity is formed inside the support bushing and has an opening at one end close to the support frame, a screw connection is provided at one end of the receiving cavity away from the opening, and a stopper is formed on the cavity wall between the screw connection and the opening; One end of the shaft rod is pivotally connected to the pivotal portion of the support frame as a pivotal end, and the other end is inserted into the receiving cavity of the support bushing through the opening as a threaded end and is threadedly connected to the threaded member. The pivotal end is also provided with an abutment platform corresponding to abutment and positioning with a side surface of the support frame facing the support bushing, and a driving part for driving the shaft rod to rotate; the device also includes: A clutch ring body is hooped on the shaft to apply a predetermined pressure to the shaft, and the clutch ring body has an abutment portion corresponding to the stopper portion and relatively fixed with the support bushing in the circumferential direction.

2. The winding drum installation device for a rolling blind according to claim 1, characterized in that: A sliding groove with an entrance and exit facing the opening is formed at one end of the storage chamber away from the opening, and the screw connection piece is slidably inserted into the sliding groove via the entrance and exit and is relatively fixed to the sliding groove in the circumferential direction. The installation device also includes an elastic member assembled in the storage chamber, and the elastic member is configured to apply elastic force to the screw connection piece to cause the screw connection piece to move toward the outside of the entrance and exit of the sliding groove and then push the shaft rod so that the abutment platform and the support frame remain in abutment.

3. The winding drum installation device for a rolling blind according to claim 2, characterized in that: The end face of the screw-connector at one end close to the opening is provided with a screw hole, and the screw-connected end of the shaft rod is provided with a screw portion screwed into the screw hole; or, the end face of the screw-connector at one end close to the opening is provided with a screw portion, and the end face of the screw-connected end of the shaft rod is correspondingly provided with a screw hole screwed into the screw portion.

4. The winding drum installation device for a rolling blind according to claim 2, characterized in that: The sliding groove is also provided with a through hole penetrating the groove wall on the groove wall at the end opposite to the entrance and exit, and the end of the screw connection component away from the shaft rod is correspondingly provided with a hook portion that passes through the through hole and is correspondingly hooked on the periphery of the outer end hole of the through hole to prevent the screw connection component from completely sliding out of the sliding groove from the entrance and exit.

5. The winding drum installation device for a rolling blind according to claim 2, characterized in that: The screw connection is a stepped shaft rod with one end being thin and the other end being thick, and the thick end is screwed to the shaft rod. The elastic member is a spring correspondingly sleeved on the thin end of the screw connection, and the opposite ends of the spring respectively abut against the groove wall at one end of the sliding groove opposite to the entrance and exit and the connecting step surface between the thin end and the thick end.

6. The winding drum installation device for a rolling blind according to claim 1, characterized in that: The outer side wall of the shaft is provided with a first positioning protrusion and a second positioning protrusion with a predetermined spacing in the axial direction of the shaft, and the clutch ring body is assembled between the first positioning protrusion and the second positioning protrusion, and the clutch ring body is positioned in the axial direction by the first positioning protrusion and the second positioning protrusion.

7. The winding drum installation device for a rolling blind according to claim 1, characterized in that: The device also includes an end cover fixedly assembled at the opening of the support bushing, a through hole for the pivot end of the shaft rod to pass through is opened in the middle of the end cover, a first abutment protrusion is formed on the inner side surface of the end cover, and a second abutment protrusion is formed on the outer side wall of the middle section of the shaft rod for abutting against the first abutment protrusion in the circumferential direction when the shaft rod rotates and moves axially relative to the support bushing to limit the maximum stroke of the shaft rod extending outward relative to the support bushing.

8. The winding drum installation device for a rolling blind according to claim 1, characterized in that: One of the side surfaces of the abutting platform and the supporting frame abutting against each other is a convex spherical surface.

9. The winding drum installation device for a rolling blind according to claim 1, characterized in that: The stopping portion is a stopping groove formed by the inner wall of the supporting bushing, and the clutch ring body is a torsion spring with two torsion arms as the abutting portions, and the two torsion arms extend into the stopping groove and respectively abut against the groove walls on both sides of the stopping groove; or, the stopping portion is a stopping protrusion formed by the inner wall of the supporting bushing, and the clutch ring body is a C-shaped retaining spring with two free ends as the abutting portions, and the stopping protrusion extends between the two free ends and respectively abuts against the two free ends.

10. A rolling curtain, comprising a winding drum and a winding drum mounting device assembled on at least one end of the winding drum, characterized in that: The winding drum installation device is the winding drum installation device as described in any one of claims 1-9.

Images