A light adjusting shaft mounting structure of an electric vertical curtain and an electric vertical curtain

Abstract

The utility model discloses a kind of light adjusting shaft mounting structure of electric vertical curtain and electric vertical curtain, the light adjusting shaft mounting structure of electric vertical curtain includes transmission case, light adjusting shaft and the limiting structure for limiting light adjusting shaft position, the transmission case has two and symmetrically sets in the length direction of light adjusting shaft both ends;The limiting structure has two and symmetrically sets in the length direction of light adjusting shaft both ends, the limiting structure includes: shaft sleeve, it is fixedly set in transmission case along the length direction of light adjusting shaft, the two end portions of the length direction of the light adjusting shaft are inserted into the shaft sleeve of corresponding position, along the length direction of light adjusting shaft, every end portion of the light adjusting shaft is fixed relative to the shaft sleeve position of corresponding position.

Description

Technical Field

[0001] This utility model relates to electric curtains, and more particularly to a dimming shaft mounting structure for an electric vertical curtain, and an electric vertical curtain using the dimming shaft mounting structure. Background Technology

[0002] Motorized vertical blinds employ a Venetian blind structure, allowing the slats to move left and right for opening and closing, and also to rotate to change the direction of light transmission. Vertical blinds are increasingly widely used because they can regulate indoor light, provide ventilation, and offer sun shading. The term "vertical blind" as used here includes common vertical blinds, as well as decorative vertical blinds with added sheer curtains, or motorized blinds that differ only in the material of the blind body. Throughout this text, "vertical blind" has the same meaning.

[0003] Vertical blinds use a motor-driven mechanical transmission to control light adjustment and opening / closing. A rotating drive bar (for light adjustment) and a translating drive bar are housed within ball bearings (sliders). These ball bearings slide within a track driven by the transmission mechanism. Hooks are located at the bottom of the ball bearings, and the curtain slats are fixed to these hooks. The translating drive bar controls the opening and closing of the curtain slats; this transmission can be either ball bearings or a synchronous belt. The rotating drive bar rotates the hooks on the ball bearings, controlling the direction of the curtain slats and adjusting the amount of light blocking. This transmission typically uses polygonal drive bars (primarily hexagonal). Because two separate drives are needed to control opening / closing and light adjustment, vertical blind motors generally employ dual-motor drives or a single motor with a clutch switching function.

[0004] In existing motorized vertical blinds, the dimming shaft is a single long shaft. After the track length exceeds a certain length, due to its own elasticity, the middle part bends downward due to the load and its own weight. This requires more force to drive the dimming shaft to rotate and is prone to noise. Therefore, the existing technology generally uses a support block inserted in the middle of the track to support the dimming shaft. For example, Chinese Patent Application No. 202011555406.8 discloses a vertical dimming opening and closing curtain device, which includes a dimming drive assembly, a dimming drive transmission assembly connected to the dimming drive assembly, and a plurality of dimming assemblies arranged sequentially along the dimming drive transmission assembly. Each dimming assembly includes a dimming frame, a first dimming action member, a second dimming action member, and a curtain slat support member. The first dimming action member and the second dimming action member are rotatably connected to the dimming frame. The first dimming action member is sleeved on the dimming drive transmission assembly and can move along the length direction of the dimming drive transmission assembly. The second dimming action member is connected to the first dimming action member. The curtain slat support member is disposed on the second dimming action member. The dimming drive transmission assembly includes a dimming drive shaft and a dimming drive bearing carrier. The output end of the dimming drive assembly is connected to one end of the dimming drive shaft. The dimming drive bearing carrier is sleeved on the dimming drive shaft and is used to support the dimming drive shaft.

[0005] However, in the aforementioned existing technology, the dimming shaft is only supported to prevent bending in the middle, but it can still move along the length of the track, which affects the normal adjustment of the amount of light blocking by the curtain. Utility Model Content

[0006] The first technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a dimming shaft installation structure for an electric vertical blind, which limits the position of the dimming shaft and prevents it from bending or moving.

[0007] The second technical problem to be solved by this utility model is to provide an electric vertical blind with the above-mentioned dimming shaft mounting structure.

[0008] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a dimming shaft installation structure for an electric vertical blind, including a transmission box, a dimming shaft, and a limiting structure for limiting the position of the dimming shaft. The transmission box has two boxes and is symmetrically arranged at both ends of the length direction of the dimming shaft.

[0009] Its features are:

[0010] The limiting structure has two parts and is symmetrically arranged at both ends of the dimming axis length direction. The limiting structure includes:

[0011] A bushing is fixedly installed in the transmission box along the length of the dimming shaft. The two ends of the dimming shaft along the length are inserted into the bushings at corresponding positions. Along the length of the dimming shaft, the position of each end of the dimming shaft relative to the bushing at the corresponding position is fixed.

[0012] By setting limiting structures at both ends of the dimming shaft, and by using screws and the tail of the fixing parts to cooperate, the fixing parts can be spread out on the dimming shaft and fixed relative to the dimming shaft. The fixing parts are also fixed in position along the length of the dimming shaft. This fixes the positions of both ends of the dimming shaft in the length direction, preventing it from bending or moving axially. This prevents the dimming shaft from rotating unevenly and prevents the slider of the vertical curtain from jamming and making noise during operation. It is especially suitable for vertical curtain tracks that are long, eliminating the need to set a support for the dimming shaft in the middle of the track.

[0013] The bushing is fixedly installed in the transmission box along the length of the dimming shaft. This means that the bushing cannot move relative to the transmission box along the length after dimming, but it does not restrict its rotation relative to the transmission box.

[0014] Furthermore, in order to fix the position of the end of the dimming shaft relative to the bushing in the length direction of the dimming shaft, the limiting structure also includes a fixing member. The fixing member is fixedly installed in the transmission box along the length direction of the dimming shaft. The fixing member includes a tail. One end of the bushing is for the dimming shaft to be inserted, and the other end of the bushing is for the tail to be inserted. The tail abuts against the dimming shaft in the radial direction, and the head abuts against the outside of the end of the bushing or inside the transmission box.

[0015] Furthermore, the fixing member also includes a head, which abuts against the end of the corresponding bushing away from the dimming shaft, thereby fixing the fixing member at both ends of the dimming shaft. When the dimming shaft is about to deform, the fixing member can tighten the dimming shaft at the end of the dimming shaft to prevent it from deforming.

[0016] Preferably, to facilitate radial contact between the tail and the dimming shaft, the limiting structure further includes a screw threadedly connected to the fixing member. The screw can radially expand the tail after being inserted into the tail, so that the tail abuts against the inner circumferential wall of the dimming shaft.

[0017] Preferably, to facilitate tail deformation, the tail is a rod-shaped part with multiple gaps formed in the circumferential direction.

[0018] Preferably, to facilitate the engagement of the fastener and the screw, a screw hole is formed inside the head that corresponds to the screw hole.

[0019] Furthermore, to avoid exposing the limiting structure and to facilitate defining the position of the limiting structure, the dimming shaft mounting structure also includes a first housing and a second housing, wherein one set of limiting structures is disposed in the first housing and the other set of limiting structures is disposed in the second housing, and the bushing is rotatably supported in the housing at the corresponding position.

[0020] Furthermore, to prevent the fixing component from detaching from the bushing, the limiting structure also includes an end cap, which is disposed on the side of the fixing component away from the dimming shaft, and the end cap is fixed relative to the corresponding housing.

[0021] Furthermore, in order to facilitate the adjustment of the straightness of the dimming shaft and its engagement with the limiting structure, the first housing and the second housing are respectively provided with openings, and the end cap is engaged at the opening.

[0022] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: an electric vertical curtain, including a track, characterized in that: a dimming shaft mounting structure as described above is applied, the dimming shaft passes through the track, and the limiting structure is set at both ends in the length direction of the track.

[0023] Compared with the prior art, the advantages of this utility model are as follows: by setting limiting structures at both ends of the dimming shaft, and by the cooperation of screws and the tail of the fixing member, the fixing member can be spread out on the dimming shaft and fixed relative to the dimming shaft. The fixing member is also fixed in position along the length of the dimming shaft, thereby fixing the positions of both ends of the dimming shaft in the length direction, preventing it from bending or axially moving. This prevents the dimming shaft from rotating unevenly and prevents the slider of the vertical curtain from jamming and making noise during operation. It is especially suitable for vertical curtain tracks that are long, eliminating the need to set a support member to support the dimming shaft in the middle of the track. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an embodiment of the electric vertical blind of this utility model;

[0025] Figure 2 This is a cross-sectional view of the electric vertical blind according to an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of part I;

[0027] Figure 4 This is a schematic diagram of the housing of the track and drive device of the concealed part of the electric vertical curtain according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the limiting component of the dimming shaft of the electric vertical blind according to an embodiment of the present utility model;

[0029] Figure 6 This is an exploded structural diagram of the limiting component of the dimming shaft of the electric vertical blind according to an embodiment of the present invention. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] See Figures 1-6 An electric vertical blind includes a track 100 and a drive unit. The drive unit includes a drive section 200, a transmission section, a first housing 300, and a second housing 400. The first housing 300 may have an L-shaped cross-section and includes a first portion 301 and a second portion 302 that are perpendicular to each other. The first portion 301 is disposed on the side of the track 100 and arranged parallel to the track 100. The second portion 302 is located at one end of the track 100, and the second housing 400 is disposed at the other end of the track 100. The first portion 301 and the second portion 302 are internally interconnected. The first portion 301 of the first housing 300 constitutes a drive housing, and the second portion 302 and the fourth housing 400 constitute a transmission housing.

[0033] The drive unit 200 includes a first drive mechanism 1 and a second drive mechanism 2. Preferably, both drive mechanisms are tubular motors, and the axial directions of the two tubular motors are parallel to each other and parallel to the length direction of the track 100. The first drive mechanism 1 and the second drive mechanism 2 are mainly disposed within the first part 301 of the first housing 300. The first drive mechanism 1 has a first output end with a first bevel tooth 11 disposed thereon, and the second drive mechanism 2 has a second output end with a second bevel tooth 21 disposed thereon.

[0034] The transmission unit includes a driving transmission mechanism and a driven transmission mechanism. The driving transmission mechanism is mainly located in the second part 302 of the first housing 300, and includes a first transmission shaft 31, a second transmission shaft 32, a third transmission shaft 33, a fourth transmission shaft 34, a third bevel gear 35, a fourth bevel gear 36, a fifth bevel gear 37, and a sixth bevel gear 38. The axial directions of the first transmission shaft 31, the second transmission shaft 32, and the third transmission shaft 33 are perpendicular to the axial directions of each driving mechanism, while the axial direction of the fourth transmission shaft 34 is parallel to the axial directions of each driving mechanism.

[0035] The third bevel gear 35 is fixedly disposed on the outer periphery of the first drive shaft 31, so that the two can rotate synchronously. The first bevel gear 11 on the first drive mechanism 1 meshes with the third bevel gear 35, thereby driving the first drive shaft 31 to rotate around its own axis.

[0036] The second drive shaft 32 and the third drive shaft 33 are coaxially arranged and rotate synchronously. They can be integrally formed or separate structures connected to each other (such as keyway fit for synchronous rotation). The fourth bevel gear 36 is fixedly arranged on the outer periphery of the second drive shaft 32, so that the two can rotate synchronously; the fifth bevel gear 37 is fixedly arranged on the outer periphery of the third drive shaft 33, so that the two can rotate synchronously. In this embodiment, the fourth bevel gear 36 is preferably arranged at the end of the second drive shaft 32 away from the third drive shaft 33, and the fifth bevel gear 37 is preferably arranged at the end of the third drive shaft 33 away from the second drive shaft 32. The second bevel gear 12 on the second drive mechanism 2 meshes with the fourth bevel gear 36 on the second drive shaft 32, thereby realizing motion steering. The sixth bevel gear 38 is fixedly arranged on the outer periphery of the fourth drive shaft 33, so that the two can rotate synchronously, and the fifth bevel gear 37 and the sixth bevel gear 38 mesh. The second drive mechanism 2 drives the fourth drive shaft 34 to rotate around its own axis via the second bevel gear 12, the fourth bevel gear 36, the second drive shaft 32, the third drive shaft 33, the fifth bevel gear 37, and the sixth bevel gear 38. The second drive shaft 32 and the third drive shaft 33 pass through the first drive shaft 31 and can rotate relative to the first drive shaft 31.

[0037] The arrangement of the aforementioned drive unit (first drive mechanism 1 and second drive mechanism 2 arranged side by side) and the active transmission mechanism (each drive shaft and bevel gear) reduces the size of the drive device 200 located at the end of the track 100. This size refers to the length dimension along the length direction of the track 100, i.e., as shown below. Figure 3 The dimensions shown in the left-right direction reduce the space occupied.

[0038] The motorized vertical blind also includes a dimming shaft 500, which is coaxially mounted and fixed to the fourth drive shaft 34 so that the two can rotate synchronously. The dimming shaft 500 is used to adjust the rotation angle of the blind slats. It passes through the track 100 and into the second housing 400, and is rotatably supported within the second housing 400. The dimming shaft 500 can also be driven using other existing technologies.

[0039] The dimming shaft 500 has symmetrically arranged limiting structures 600 at both ends, including a fixing member 601, a screw 602, an end cap 603, and a bushing 604. The ends of the dimming shaft 500 are inserted into the corresponding bushings 604, one bushing 604 located within a first housing 300 and the other within a second housing 400, with each bushing 604 limited along the length of the dimming shaft 500 by the corresponding housing. The fixing member 601 has a structure similar to an expansion screw, including a head 6011 and a tail 6012. The tail 6012 is rod-shaped with multiple circumferential gaps, allowing it to be shapeable and thus have variable circumferential dimensions. One end of the bushing 604 is for insertion of the dimming shaft 500, while the other end abuts against the head 6011, causing the head 6011 to be supported on the outside of the end of the bushing 604. A screw hole 6013 is formed in the head 6011, into which a screw 602 can be inserted until it reaches the tail 6012. The tail 6012 is pushed outward by the screw 602, thereby abutting against the inner circumferential wall of the dimming shaft 500 and being relatively fixed. The bushing 604 located in the first housing 300 can be the same component as the fourth drive shaft 34.

[0040] Alternatively, the tail portion 6012 can also be fitted onto the outside of the dimming shaft 500, and pressed radially against the dimming shaft 500 by an interference fit or the restoring force of elastic deformation, both being fixed by friction. Furthermore, alternatively, the head portion 6011 of the fixing member 601 can also abut against the inside of the transmission box, such as by setting a stop plate inside the transmission box. Regardless of whether the head portion 6011 abuts against the bushing 604 or against the transmission box, as long as the fixing member 601 is fixed relative to the transmission box along the length of the dimming shaft 500 in the installed state, it is acceptable.

[0041] The end cap 603 is located on the side of the fixing member 601 away from the dimming axis 500, and the end cap 603 is fixed relative to the corresponding first housing 300 and second housing 400. The first housing 300 and the second housing 400 are respectively provided with openings 303, and the end cap 603 is snapped into the opening 303 to facilitate the adjustment of the straightness of the dimming axis 500 during the installation process before fixing (that is, after adjustment, the fixing member 601 and screws 602 are installed, and finally the end cap 603 is put on).

Claims

1. A dimming shaft mounting structure for an electric vertical blind, comprising a transmission box, a dimming shaft (500), and a limiting structure (600) for limiting the position of the dimming shaft (500), wherein the transmission box has two and is symmetrically arranged at both ends of the dimming shaft (500) along its length. Its features are: The limiting structure (600) has two parts and is symmetrically arranged at both ends of the length direction of the dimming axis (500). The limiting structure (600) includes: A bushing (604) is fixedly installed in the transmission box along the length direction of the dimming shaft (500). The two ends of the dimming shaft (500) along the length direction are inserted into the bushing (604) at the corresponding positions. Along the length direction of the dimming shaft (500), each end of the dimming shaft (500) is fixed relative to the bushing (604) at the corresponding position.

2. The dimming shaft mounting structure of the electric vertical blind according to claim 1, characterized in that: The limiting structure (600) also includes a fixing member (601), which is fixedly installed in the transmission box along the length of the dimming shaft (500). The fixing member (601) includes a tail (6012). One end of the bushing (604) is for the dimming shaft (500) to be inserted, and the other end of the bushing (604) is for the tail (6012) to be inserted. The tail (6012) abuts against the dimming shaft (500) in the radial direction.

3. The dimming shaft mounting structure of the electric vertical blind according to claim 2, characterized in that: The limiting structure (600) also includes a screw (602) threadedly connected to the fixing member (601). The screw (602) can radially expand the tail (6012) after being inserted into the tail (6012), so that the tail (6012) abuts against the inner peripheral wall of the dimming shaft (500).

4. The dimming shaft mounting structure of the electric vertical blind according to claim 3, characterized in that: The tail portion (6012) is rod-shaped with multiple gaps formed circumferentially.

5. The dimming shaft mounting structure of the electric vertical blind according to claim 3, characterized in that: The fastener (601) also includes a head (6011) that abuts against the end of the corresponding bushing (604) away from the dimming shaft (500).

6. The dimming shaft mounting structure of the electric vertical blind according to claim 5, characterized in that: The head (6011) has a screw hole (6013) that corresponds to the screw (602).

7. The dimming shaft mounting structure of the motorized vertical blind according to any one of claims 1 to 6, characterized in that: The transmission box includes a first housing (300) and a second housing (400), wherein a set of limiting structures (600) is disposed in the first housing (300) and another set of limiting structures (600) is disposed in the second housing (400), and the bushing (604) is rotatably supported in the housing at the corresponding position.

8. The dimming shaft mounting structure of the electric vertical blind according to claim 7, characterized in that: The limiting structure (600) also includes an end cap (603), which is disposed on the side of the fixing member (601) away from the dimming axis (500) and is fixed relative to the corresponding housing.

9. The dimming shaft mounting structure of the electric vertical blind according to claim 8, characterized in that: The first housing (300) and the second housing (400) are respectively provided with openings (303), and the end cap (603) is engaged at the opening (303).

10. An electric vertical blind, comprising a track (100), characterized in that: The application has a dimming shaft mounting structure as described in any one of claims 1 to 9, wherein the dimming shaft (500) passes through the track (100), and the limiting structure (600) is provided at both ends of the track (100) in the length direction.

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