Electric curtain drive roller structure

Abstract

This invention provides a motorized curtain drive roller structure, belonging to the field of motorized curtain technology. It solves the problem of poor adaptability of existing motorized curtain rollers. The invention includes an adjustable roller and side rollers disposed on the side of the adjustable roller, the wheel surface of which is expandable and retractable. The invention features two side rollers and an adjustable roller between them. The wheel surface of the adjustable roller can expand and retract under the adjustment of the wheel surface adjustment structure, thereby changing the radial dimension of the wheel surface according to the actual track type, so as to better match different types of tracks. This ensures appropriate pre-pressure between the roller and the track, guaranteeing normal operation of the curtain pusher. Therefore, it has strong applicability and meets market demands.

Description

Technical Field

[0001] The invention relates to the technical field of electric curtains, and in particular to a driving roller structure of an electric curtain. Background Art

[0002] The current scale of the smart home / smart home improvement related industries is in a stage of rapid growth, and the current intelligent home renovation is usually divided into the pre-installation and post-installation markets. Among them, the post-installation market, especially the electric curtain market, has seen the emergence of some post-installation electric curtain pushers that do not require installation and track replacement, and are very portable.

[0003] The existing portable curtain pushers generally have the structure of a power source, an electric control part, a transmission structure, a hook device and the like.

[0004] The hook device and transmission structure of the existing curtain pusher work together to ensure that the curtain pusher can be configured on the curtain track. It is necessary to ensure that the roller and the track have a certain friction force to prevent slipping, but the friction force cannot be too large to cause the motor to fail to drive, and the track must run smoothly and not deviate from the direction of the track. Solving this just right force at the same time poses a great challenge to the design and installation of this small curtain pusher, especially to adapt to the tracks of different users' homes.

[0005] There are three types of tracks on the market: inner groove type, I-shaped, and Roman rod.

[0006] The curtain pushers currently on the market are usually only compatible with a certain type of track, and it is often the case that several types of tracks cannot be compatible with a certain track.

[0007] Therefore, it is necessary to redesign and improve the roller device on the transmission structure.

[0008] The first problem that needs to be solved is how to make a unified roller run on different curtain track surfaces in the face of tracks with different designs; the second problem is to maintain good friction when running on different track surfaces; the third problem is to keep the original track track during operation, that is, to have good linearity. If the above three problems can be solved at the same time, the strong adaptability and universal properties of the curtain pusher can be achieved, which will help increase product sales and enhance user experience. Summary of the invention

[0009] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose an electric curtain driving roller structure that can adapt to different track types and can form a good fit with different tracks so as to have appropriate contact friction.

[0010] The purpose of the present invention can be achieved by the following technical solutions:

[0011] The electric curtain driving roller structure is characterized in that it comprises an adjustable wheel and a side wheel arranged on the side of the adjustable wheel, and the radial size of the wheel surface of the adjustable wheel is adjustable.

[0012] When the track is a Roman rod, the wheel surface of the adjustable wheel fits the track of the electric curtain and maintains a suitable tension. The hanging mechanism gives the curtain pusher an upward force to keep the roller structure of the curtain pusher close to the curtain track. The curtain pusher has a spring structure, which gives the curtain pusher a downward force to keep the roller structure and the track surface with just the right rolling friction.

[0013] Or when the track is a groove type, a part of the adjustable wheel can be inserted into the track groove for limiting, so that the entire roller structure runs more smoothly on the electric curtain track.

[0014] Preferably, the adjustable wheel is linked to the side wheels.

[0015] The adjustable wheel and the side wheel can rotate together under the drive of the driving mechanism. When adapting to different tracks, the wheel surface size of the adjustable wheel can be adjusted so that the wheel surface of the adjustable wheel can fit well with different track types, thereby having appropriate contact friction with different tracks. The adaptability range is widened.

[0016] Preferably, a circle of guide bevel is provided on the side of the side wheel close to the adjustable wheel.

[0017] Preferably, the adjustable wheel comprises a structural wheel and a wheel surface adjustment structure, wherein the structural wheel is an annular structure formed by a plurality of arc-shaped tentacles, the outer surface of each arc-shaped tentacles forms the wheel surface, and the wheel surface adjustment structure can adjust the size of the wheel surface. The wheel surface adjustment structure can adjust the radial size of the wheel surface of the adjustable wheel.

[0018] Preferably, the wheel surface adjustment structure includes a first adjustment wheel, a second adjustment wheel and a tentacles adjustment mechanism, the first adjustment wheel is provided with a plurality of slide grooves, each arc-shaped tentacles is provided with a support rod, the slide grooves correspond to each support rod one by one, each support rod is located in the corresponding slide groove, and the tentacles adjustment mechanism can make each support rod move back and forth along the slide groove.

[0019] Preferably, the antenna adjustment mechanism can enable each support rod to move back and forth synchronously along the slide groove.

[0020] Preferably, the sliding groove is arranged radially along the first adjusting wheel.

[0021] Preferably, the antenna adjustment mechanism includes a guide column and a plurality of guide grooves arranged on the second adjustment wheel, the arc-shaped antenna and the guide column are arranged at both ends of the support rod, each guide column corresponds to the guide groove one by one, each guide column is located in the corresponding guide groove, and the two can move back and forth relative to each other.

[0022] Preferably, the guide groove is arc-shaped.

[0023] Preferably, an adjustment handle is provided on the second adjustment wheel.

[0024] The adjusting handle is arranged perpendicularly to the second adjusting wheel.

[0025] Preferably, the side wheels located on both sides of the adjustable wheel are respectively a first side wheel and a second side wheel, and a first shaft hole is provided on the first side wheel.

[0026] Preferably, a second axial hole is provided on the first adjusting wheel.

[0027] The above-mentioned slide grooves are arranged circumferentially along the second axial hole.

[0028] Preferably, the second side wheel is connected to the first adjusting wheel via a linkage structure.

[0029] Preferably, the linkage structure comprises a linkage sleeve, which is in the shape of a stepped column, one end of which is sleeved with the second side wheel, and the other end of which is buckled on the second adjusting wheel and then linked to the first adjusting wheel.

[0030] Preferably, at least one bayonet is provided on one end of the linkage sleeve that is linkage-connected to the first adjusting wheel, the bayonet is opposite to the slide slot, and the support rod on the slide slot is limited between the bayonet and the slide slot.

[0031] The output shaft of the driving mechanism-motor passes through the first shaft hole of the first side wheel and is connected to the second shaft hole of the first adjusting wheel. The rotation of the output shaft of the motor can drive the first side wheel and the first adjusting wheel to rotate.

[0032] A part of the support rod is located in the bayonet, and a part of the support rod is located in the slide slot, so when the first adjustment wheel is driven by a driving mechanism (such as a motor) to rotate, the structural wheel will be driven to rotate, so that the support rod will also rotate together, and because a part of the support rod is located in the bayonet, the linkage sleeve will also rotate together, and the second side wheel is fixedly sleeved with the other end of the linkage sleeve, so it will also rotate together, thereby realizing the synchronous rotation movement of the first side wheel, the second side wheel and the adjustable wheel.

[0033] Compared with the prior art, the present invention is provided with an adjustable wheel between two side wheels and the two side wheels. The wheel surface of the adjustable wheel can expand and shrink under the adjustment of the wheel surface adjustment structure, so that the size of the wheel surface can be changed according to the actual track type, so as to better match with different types of tracks, so that there is a suitable pre-pressure (or friction force) between the roller and the track to ensure the normal movement of the curtain pusher. Therefore, it has strong applicability and meets market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention connected with an electric motor;

[0035] Figure 2 for Figure 1 Exploded diagram of

[0036] Figure 3 It is a partial structural schematic diagram of the present invention;

[0037] Figure 4 To remove Figure 3 Schematic diagram of the structure behind the central linkage casing;

[0038] Figure 5 To remove Figure 4 A schematic diagram of the structure behind the second adjusting wheel;

[0039] Figure 6 It is a front view of the present invention;

[0040] Figure 7 for Figure 6 Schematic diagram of the structure in the AA direction;

[0041] Figure 8 This is a schematic diagram of the present invention combined with a Roman rod;

[0042] Fig. 9 It is a schematic diagram of the present invention combined with the groove rail;

[0043] Fig.10 This is a schematic diagram of a situation where the guide post is located at the outermost end of the guide groove;

[0044] Fig.11 This is a schematic diagram of the guide post being located at the innermost end of the guide groove.

[0045] In the figure, 1. adjustable wheel; 2. structural wheel; 3. arc feeler; 4. Roman rod; 5. groove rail; 6. first adjusting wheel; 7. second adjusting wheel; 8. slide groove; 9. support rod; 10. guide groove; 11. guide column; 12. first side wheel; 13. second side wheel; 14. first axial hole; 15. second axial hole; 16. linkage sleeve; 17. bayonet; 18. adjusting handle; 19. hole; 20. motor; 21. output shaft. DETAILED DESCRIPTION

[0046] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0047] The purpose of the present invention can be achieved by the following technical solutions:

[0048] like Figure 1-Figure 11As shown, the electric curtain driving roller structure proposed by the present invention comprises an adjustable wheel 1 and side wheels arranged on both sides of the adjustable wheel 1, and the wheel surface of the adjustable wheel 1 is expandable and contractible. The adjustable wheel 1 is linked to the side wheels.

[0049] The adjustable wheel 1 comprises a structural wheel 2 and a wheel surface adjustment structure. The structural wheel 2 is an annular structure formed by a plurality of arc-shaped feelers 3. The outer surface of each arc-shaped feeler 3 forms the above-mentioned wheel surface. The wheel surface adjustment structure can adjust the size of the wheel surface.

[0050] The adjustable wheel 1 and the side wheels can rotate together under the drive of the driving mechanism. When adapting to different tracks, the wheel surface size of the adjustable wheel 1 can be adjusted so that the wheel surface of the adjustable wheel 1 can fit well with different track types, thereby having appropriate contact friction with different tracks, and the adaptability range is widened.

[0051] Currently on the market, Roman rods 4 and groove rails 5 are commonly used in household curtain rails. The combination of the present invention with Roman rods 4 and groove rails 5 is described below.

[0052] In order to improve the friction contact between the roller structure and the circular Roman rod 4, the cross section of the roller structure needs to be designed as a groove. The side wheel of the present invention is provided with a circle of guide slopes on the side close to the adjustable wheel 1. Thus, a groove can be formed between the two side wheels and the adjustable wheel 1. Figure 8 FIG. 2 is a schematic diagram of the present invention used on a Roman rod 4. FIG.

[0053] The groove design has two advantages. First, it increases the contact area between the roller structure and the Roman rod 4, making it less likely for the wheel and the track of the Roman rod 4 to slip. Second, the concave design makes it less likely for the roller structure to deviate from the track of the Roman rod 4, and has good tracking linearity.

[0054] However, for the concave roller structure, the contact surface on the grooved track will be less than that of the flat one, and it is easy to deviate from the track during operation. The following structural design can avoid this situation and solve the adaptability problem. The roller structure is divided into three parts, the middle adjustable wheel 1 with an expandable and retractable wheel surface, and the left and right side wheels with a circle of guide bevels (the wheel surface is inclined inward). When the present invention needs to be used on the grooved track, the knob is rotated to extend the "annular tentacles" of the adjustable wheel 1 in the middle part through the linkage structure, thereby embedding a part of the roller structure into the groove of the grooved track. In this way, the roller structure can be prevented from deviating when moving under low friction conditions, thereby improving stability. The specific schematic diagram is shown in the figure. Fig. 9 shown.

[0055] The following is a detailed introduction to the electric curtain drive roller structure:

[0056] The wheel surface adjustment structure of the present invention comprises a first adjustment wheel 6, a second adjustment wheel 7 and a feeler adjustment mechanism, wherein the first adjustment wheel 6 is provided with a plurality of slide grooves 8, which are arranged radially along the first adjustment wheel 6, and each arc-shaped feeler 3 is provided with a support rod 9, wherein the slide grooves 8 correspond to each support rod 9 one by one, and each support rod 9 is located in the corresponding slide groove 8, and the feeler adjustment mechanism can make each support rod 9 move back and forth synchronously along the slide groove 8. Thus, each arc-shaped feeler 3 can also move back and forth accordingly.

[0057] The present invention can realize the synchronous back and forth movement of each arc-shaped antenna 3. Initially, each arc-shaped antenna 3 forms a smaller ring structure whose wheel surface is circular. After adjustment by the wheel surface adjustment structure, such as adjustment away from the center direction of the first adjustment wheel 6, each arc-shaped antenna 3 moves synchronously to form a larger ring structure.

[0058] The antenna adjustment mechanism includes a guide column 11 and a plurality of guide grooves 10 arranged on the first adjustment wheel 6. The guide groove 10 is arc-shaped. Each support rod 9 is clamped between the first adjustment wheel 6 and the second adjustment wheel 7. The arc-shaped antenna 3 and the guide column 11 are arranged at both ends of the support rod 9. Each guide column 11 corresponds to the guide groove 10 one by one. Each guide column 11 is located in the corresponding guide groove 10, and the two can move back and forth relative to each other.

[0059] The side wheels located on both sides of the adjustable wheel 1 are respectively a first side wheel 12 and a second side wheel 13 , and a first shaft hole 14 is provided on the first side wheel 12 .

[0060] The first adjusting wheel 6 is provided with a second axial hole 15. The above-mentioned slide grooves 8 are arranged circumferentially along the second axial hole 15. The second side wheel 13 is connected to the first adjusting wheel 6 through a linkage structure.

[0061] The linkage structure includes a linkage sleeve 16 , which is in a stepped column shape. One end of the linkage sleeve 16 is sleeved with the second side wheel 13 , and the other end is buckled on the second adjusting wheel 7 and then linked to the first adjusting wheel 6 .

[0062] At least one bayonet 17 is disposed on one end of the linkage sleeve 16 which is linked to the first adjusting wheel 6 . The bayonet 17 is opposite to the slide slot 8 . The support rod 9 on the slide slot 8 is limited between the bayonet 17 and the slide slot 8 .

[0063] The present invention is provided with a plurality of bayonet holes 17 , each bayonet hole 17 corresponds to a slide slot 8 one by one and each bayonet hole 17 is opposite to a corresponding slide slot 8 , and each support rod 9 is limited between the corresponding bayonet hole 17 and the slide slot 8 .

[0064] The output shaft 21 of the driving mechanism motor 20 passes through the first shaft hole 14 of the first side wheel 12 and is connected to the second shaft hole 15 of the first adjusting wheel 6. The rotation of the output shaft 21 of the motor 20 can drive the first side wheel 12 and the first adjusting wheel 6 to rotate.

[0065] A part of the support rod 9 is located in the bayonet 17, and a part of the support rod 9 is located in the slide groove 8, so that when the first adjustment wheel 6 is driven by the driving mechanism (such as the motor 20) to rotate, it will drive the structural wheel 2 to rotate, so that the support rod 9 also rotates together, and because a part of the support rod 9 is located in the bayonet 17, the linkage sleeve 16 also rotates together, and the second side wheel 13 is fixedly sleeved with the other end of the linkage sleeve 16, so it also rotates together. In this way, the first side wheel 12, the second side wheel 13 and the adjustable wheel 1 can achieve synchronous rotation.

[0066] The second adjusting wheel 7 is provided with an adjusting handle 18. The adjusting handle 18 is arranged perpendicular to the second adjusting wheel 7. The second adjusting wheel 7 is provided with a hole 19. When the second adjusting wheel 7 is sleeved with the linkage sleeve 16, the hole 19 is opposite to the linkage sleeve 16, and the adjusting handle 18 can extend from the cavity of the linkage sleeve 16 and the hole 19.

[0067] The structural wheel 2 formed by each arc-shaped feeler 3 of the present invention is a retractable structure. The user can rotate the adjustment handle 18 according to actual use needs, and the second adjustment wheel 7 rotates accordingly, so that the position of the guide groove 10 on the second adjustment wheel 7 changes, driving the guide column 11 at each guide groove 10 to change, so that each arc-shaped feeler 3 also extends and contracts synchronously. The entire roller structure rotates at the same angular velocity. When the roller structure is in a stationary state, the adjustment handle 18 of the telescopic switch can be operated.

[0068] Fig.10 and Fig.11 It is a schematic diagram of the extension and retraction of the adjustable wheel 1. When the entire roller structure is in a stationary state, the adjusting handle 18 is rotated to drive the second adjusting wheel 7 to rotate. The second adjusting wheel 7 can rotate relative to the linkage sleeve 16, while the linkage sleeve 16 does not move. Since the second adjusting wheel 7 is provided with a guide groove 10, when the second adjusting wheel 7 rotates, the guide groove 10 also rotates, thereby driving the guide column 11 located in the guide groove 10 to move. Since the support rod 9 is limited in the slide groove 8, it can only move back and forth along the slide groove 8, thereby realizing the synchronous expansion and contraction of the arc feelers 3 connected to each support rod 9. Fig.11 The guide post 11 is located at the innermost end of the guide groove 10; Fig.10 The guide post 11 is located at the outermost end of the guide groove 10 .

[0069] After adjusting the position of the arc-shaped feeler 3 on the adjustable wheel 1, the driving mechanism such as the motor 20 can drive the entire roller structure to move, that is, the first side wheel 12 and the first adjusting wheel 6 are directly connected to the shaft of the motor 20, so they can achieve synchronous operation, and the rotation of the first adjusting wheel 6 can drive the support rod 9 in the slide groove 8 on the first adjusting wheel 6 to move, and the support rod 9 is stuck between the slide groove 8 and the bayonet 17 of the linkage sleeve 16, so the linkage sleeve 16 can also rotate, and the second side wheel 13 is fixedly connected to the linkage sleeve 16, so the first side wheel 12, the second side wheel 13 and the middle structural wheel 2 can achieve synchronous operation. In this process, since the support rod 9 is not subjected to force in the radial direction, the arc-shaped feeler 3 will not expand or contract.

[0070] It should be understood that in the claims and description of the present invention, all "including..." should be understood as an open-ended meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed meaning, that is, its meaning should not be understood as "only includes...".

[0071] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. The electric curtain driving roller structure is characterized by: It comprises an adjustable wheel and a side wheel arranged on the side of the adjustable wheel, wherein the radial dimension of the adjustable wheel is adjustable; the adjustable wheel is linked to the side wheel; The adjustable wheel includes a structural wheel and a wheel surface adjustment structure. The structural wheel is a ring structure formed by a plurality of arc-shaped tentacles. The outer surface of each arc-shaped tentacles forms the wheel surface. The wheel surface adjustment structure can adjust the size of the wheel surface. The wheel surface adjustment structure includes a first adjustment wheel, a second adjustment wheel and a feeler adjustment mechanism. The first adjustment wheel is provided with a plurality of slide grooves. Each arc-shaped feeler is provided with a rod. The slide grooves correspond to each rod one by one. Each rod is located in the corresponding slide groove. The feeler adjustment mechanism can make each rod move back and forth along the slide groove. The antenna adjustment mechanism can make each support rod move back and forth synchronously along the slide groove; The antenna adjustment mechanism includes a guide post and a plurality of guide grooves arranged on the second adjustment wheel. The arc antenna and the guide post are arranged at both ends of the support rod. Each guide post corresponds to the guide groove one by one. Each guide post is located in the corresponding guide groove, and the two can move back and forth relative to each other. The second adjusting wheel is provided with an adjusting handle.

2. The electric curtain driving roller structure according to claim 1, characterized in that: The adjustable wheel side parts are respectively provided with a side wheel, which are a first side wheel and a second side wheel. The second side wheel is connected to the first adjusting wheel through a linkage structure.

3. The electric curtain driving roller structure according to claim 2, characterized in that: The linkage structure comprises a linkage sleeve, which is in the shape of a stepped column, one end of which is sleeved with the second side wheel, and the other end of which is buckled on the second adjusting wheel and then linked with the first adjusting wheel.

4. The electric curtain driving roller structure according to claim 3, characterized in that: At least one bayonet is provided on one end of the linkage sleeve which is linked to the first adjusting wheel. The bayonet is opposite to the slide slot, and the support rod on the slide slot is limited between the bayonet and the slide slot.

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