Venetian blind electric motor and venetian blind having same

Abstract

The present application relates to the technical field of curtains. Disclosed are a venetian blind electric motor and a venetian blind having same. The main points of the technical solutions thereof comprises a housing (1), wherein an electric motor assembly (2), a circuit board (3) and an output member are provided in the housing (1); a clutch is provided between the electric motor assembly (2) and the output member; the output member extends out of the housing (1); and a magnetic ring (5) is provided on the output member, and two Hall sensors are provided on the circuit board (3) above the magnetic ring (5). when the electric motor assembly (2) operates, the output member is driven to rotate, such that the rotation direction and stroke of the output member during the operation of the electric motor assembly (2) can be detected; and when the venetian blind is manually pulled, the output member also rotates, and the rotation direction and stroke of the output member during manual operation can also be detected. The rotation direction and stroke can be obtained during both manual and electric operations, so as to determine the lifting and lowering of the venetian blind.

Description

A Venetian blind motor and the Venetian blind itself Technical Field

[0001] This utility model relates to the field of curtain technology, and more specifically to a Venetian blind motor and the Venetian blind itself. Background Technology

[0002] Motorized Venetian blinds are frequently used in office spaces. They replace the manual pulling method of traditional blinds by using a DC motor to raise and lower the slats. Made of materials such as aluminum, wood, or PVC, the slats have an automatic flipping function, which can more precisely adjust the level of natural light in the room and achieve the best visual comfort. Technical issues

[0003] For Venetian blinds that have both electric and manual functions, a clutch is installed. The position of the clutch can be determined according to the design. The existing stroke detection mechanism is located at one end of the motor. When the user manually pulls the Venetian blind, the stroke detection mechanism does not work. Technical solutions

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a Venetian blind motor that can obtain the travel distance even when the user operates it manually.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a Venetian blind motor, comprising a housing, a motor assembly, a circuit board, and an output component disposed within the housing, a clutch disposed between the motor assembly and the output component, the output component extending out of the housing, a magnetic ring fixedly connected to the output component, one end of the circuit board extending to the magnetic ring, and two Hall sensors cooperating with the magnetic ring disposed on the circuit board.

[0006] As a further improvement of this utility model, shock-absorbing pads are connected to both ends of the outer shell.

[0007] As a further improvement of this utility model, the clutch is an electromagnetic clutch.

[0008] As a further improvement of this utility model, the clutch includes an iron ring, a clutch element, a driven element, and two magnetic beads. The motor assembly includes a motor and a reducer. The motor is connected to the reducer. The iron ring is fixedly connected to the reducer. The clutch element is fixedly connected to the output shaft of the reducer. The two magnetic beads are located on both sides of the clutch element and are attracted to the iron ring. The driven element has two grooves that cooperate with the magnetic beads.

[0009] As a further improvement of this utility model, the driven member and the output member are integrally formed.

[0010] As a further improvement of this utility model, the output shaft of the reducer extends with a positioning section, and the driven member has a positioning hole formed on the side facing the output shaft of the reducer, and the positioning section extends into the positioning hole.

[0011] As a further improvement of this utility model, the outer shell includes a housing, a left end cover, and a right end cover, both of which are detachably connected to the housing.

[0012] As a further improvement of this utility model, a slot is formed on the left end cover, and a positioning strip is formed on the outside of the reducer, the positioning strip being inserted into the slot.

[0013] As a further improvement of this utility model, a clearance hole is provided on the left end cover, and the clearance hole is located between the magnetic ring and the Hall sensor.

[0014] A type of Venetian blind, including the aforementioned Venetian blind motor. Beneficial effects

[0015] In this invention, a magnetic ring is mounted on the output component, and two Hall effect sensors are located on the circuit board above the magnetic ring. When the motor assembly is working, it drives the output component to rotate, thereby detecting the direction and travel of the output component when the motor assembly is working. When the Venetian blind is manually pulled, the output component will also rotate, and the direction and travel of the output component during manual operation can also be detected. It can achieve the acquisition of direction and travel in both manual and electric operation, thereby determining the raising and lowering of the Venetian blind. Attached Figure Description

[0016] Figure 1 is a three-dimensional structural diagram of this utility model;

[0017] Figure 2 is a cross-sectional view of this utility model;

[0018] Figure 3 is a schematic diagram of the structure of the left end cap in this utility model;

[0019] Figure 4 is a structural schematic diagram of the motor assembly in this utility model;

[0020] Figure 5 is a structural schematic diagram of the driven component in this utility model;

[0021] Figure 6 is a schematic diagram of the clutch in this utility model.

[0022] Reference numerals: 1. Outer shell; 11. Housing; 12. Left end cover; 121. Slot; 122. Clearance hole; 13. Right end cover; 2. Motor assembly; 21. Motor; 22. Reducer; 221. Positioning section; 222. Positioning strip; 3. Circuit board; 41. Iron ring; 42. Clutch; 43. Follower; 431. Groove; 432. Positioning hole; 44. Magnetic bead; 5. Magnetic ring; 6. Shock-absorbing pad.

[0023] The best implementation method of this utility model

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Referring to Figures 1 and 2, a Venetian blind motor of this embodiment includes a housing 1. Inside the housing 1, a motor 21 assembly 2, a circuit board 3, and an output component are disposed. The circuit board 3 includes a control board, which is electrically connected to the motor 21 assembly 2 and is located above the motor 21 assembly 2. A clutch is disposed between the motor 21 assembly 2 and the output component, so that the motor 21 assembly 2 and the output component can realize a clutch function. When the user manually pulls the Venetian blind, the output component will rotate, but it will not affect the state of the motor 21 assembly 2, thus protecting the motor 21 assembly 2.

[0026] The output component extends out of the housing 1, and a connecting part is formed at one end of the output component extending out of the housing 1. Power is transmitted to the rope winder through the connecting part. Power is conventionally transmitted through a hexagonal bar. Therefore, the connecting part is a hexagonal groove to facilitate connection with the hexagonal bar. Of course, a spline connection can also be used to achieve the connection. There are various connection methods, which will not be listed one by one.

[0027] A magnetic ring 5 is fixedly connected to the output component. One end of the circuit board 3 extends to the magnetic ring 5, and two Hall sensors that cooperate with the magnetic ring 5 are set on the circuit board 3. The N pole and S pole on the magnetic ring 5 are distributed alternately and are evenly distributed circumferentially along the central axis of the magnetic ring 5. The Hall sensors sense the change of magnetic poles to detect the direction and stroke.

[0028] When the user manually pulls the Venetian blinds, the output component will rotate, causing the magnetic ring 5 to rotate as well, thereby obtaining the direction and distance of manual movement and acquiring the stroke.

[0029] Referring to Figure 1, shock-absorbing pads 6 are connected to both ends of the outer shell 1. At least one groove is provided at both ends of the outer shell 1, with the opening of the groove facing downwards, i.e., the groove is set from bottom to top.

[0030] Preferably, in this embodiment, two grooves are provided at one end of the outer shell 1, and the two grooves are arranged opposite to each other. Two retaining strips are formed on the inner side of the shock-absorbing pad 6, and the retaining strips are arranged corresponding to the grooves. The retaining strips are inserted into the grooves to form an installation positioning.

[0031] In one embodiment, the clutch is an electromagnetic clutch, wherein the driving component of the electromagnetic clutch is connected to the motor 21 assembly 2, and the driven component of the electromagnetic clutch is connected to the output component, so as to realize the function of electromagnetic clutch engagement.

[0032] In this embodiment, referring to Figures 2, 4, 5 and 6, the clutch includes an iron ring 41, a clutch element 42, a driven element 43 and two magnetic beads 44. The motor 21 assembly 2 includes a motor 21 and a reducer 22. The reducer 22 reduces the output speed of the motor 21. The reducer 22 is preferably a planetary gear reducer 22. The motor 21 is connected to the reducer 22.

[0033] Iron ring 41 is fixedly connected to reducer 22. Iron ring 41 is connected to the housing of reducer 22, and the housing of reducer 22 is directly connected to iron ring 41. A clutch cavity is provided on driven member 43, and clutch member 42 is located in the clutch cavity. Magnetic beads 44 are also located in the clutch cavity. Clutch member 42 is fixedly connected to the output shaft of reducer 22. The output shaft of reducer 22 passes through iron ring 41. A circular hole is provided in the center of iron ring 41. When the output shaft of reducer 22 rotates, that is, when clutch member 42 rotates, iron ring 41 remains stationary, and the two magnetic beads 44 respectively... Located on both sides of the clutch 42 and attracted to the iron ring 41, the driven member 43 has two grooves 431 that cooperate with the magnetic beads 44. The grooves 431 are opened on the side wall of the clutch cavity and the two grooves 431 are arranged opposite to each other. When the clutch 42 rotates with the output shaft of the reducer 22, the clutch 42 will push the magnetic beads 44 to move, so that the two magnetic beads 44 are partially embedded in the corresponding grooves 431. At this time, the end of the clutch 42 abuts against the driven member 43 through the magnetic beads 44, so that the driven member 43 is driven to rotate.

[0034] When the user manually pulls the Venetian blinds, the driven component 43 will rotate. At this time, the magnetic bead 44 will disengage from the corresponding groove 431, and the clutch 42 will not rotate, thus realizing the function of manually operating the Venetian blinds.

[0035] Referring to Figures 2 and 5, the driven component 43 and the output component are integrally formed, which eliminates the need for installation between the driven component 43 and the output component, saving installation time.

[0036] Referring to Figures 4 and 5, the output shaft of the reducer 22 extends with a positioning section 221, wherein the positioning section 221 is cylindrical so that its rotation will not affect the rotation of the driven member 43. A positioning hole 432 is formed on the side of the driven member 43 facing the output shaft of the reducer 22, and the positioning section 221 extends into the positioning hole 432. The positioning section 221 and the positioning hole 432 cooperate to form a positioning function, so that the central axis of the driven member 43 coincides with the central axis of the reducer 22.

[0037] Referring to Figures 1, 2 and 3, the outer casing 1 includes a housing 11, a left end cover 12 and a right end cover 13. Both the left end cover 12 and the right end cover 13 are detachably connected to the housing 11. The left end cover 12 is detachably connected to the housing 11 by bolts. Four bolts are provided between the left end cover 12 and the housing 11, respectively located at the four corners of the left end cover 12.

[0038] The right end cover 13 is also detachably connected to the housing 11 by bolts. Four bolts are also provided between the right end cover 13 and the housing 11, located at the four corners of the right end cover 13.

[0039] A first slot is formed inside the left end cover 12, which is located above the clutch. A first through slot is formed on both sides inside the left end cover 12, and the two first through slots cooperate to form the first slot.

[0040] A second slot is formed inside the right end cover 13. The second slot is located above the motor 21 assembly 2. A second through slot is formed on both sides inside the right end cover 13. The two second through slots cooperate to form the second slot.

[0041] Circuit board 3 is inserted between the first slot and the second slot.

[0042] A slot 121 is formed on the left end cover 12, and a positioning strip 222 is formed on the outside of the reducer 22. The positioning strip 222 is inserted into the slot 121. The left end cover 12 is the end cover near the clutch side.

[0043] Preferably, two slots 121 are provided, located on opposite sides of the left end cover 12 respectively, and two positioning strips 222 are also provided, formed on the housing of the reducer 22. During installation, the positioning strips 222 are inserted into the corresponding slots 121 to form positioning and complete the installation.

[0044] Referring to Figure 2, a clearance hole 122 is provided on the left end cover 12. The clearance hole 122 is located between the magnetic ring 5 and the Hall sensor to prevent the Hall sensor from being blocked.

[0045] A Venetian blind includes the aforementioned Venetian blind motor, as well as one or more rope winders and a variable-force torsion spring, enabling both manual and electric control of the Venetian blind's raising and lowering.

[0046] When motor 21 component 2 is working, it will drive the rope winder and variable force torsion spring through transmission. At this time, the clutch is engaged, and the variable force torsion spring overcomes the weight of the Venetian blind, so that the Venetian blind can stay at any position of lifting or lowering.

[0047] When the blinds are manually pulled down or lifted up, the clutch is disengaged, and the blinds can be lowered or raised by the deformation of the variable force torsion spring.

[0048] Of course, when the motor 21 component 2 is working, the variable force torsion spring also contracts and expands as the venetian blinds rise and fall.

[0049] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A Venetian blind motor, characterized in that: The device includes a housing (1), inside which a motor assembly (2), a circuit board (3), and an output component are disposed. A clutch is disposed between the motor assembly (2) and the output component. The output component extends out of the housing (1) and a magnetic ring (5) is fixedly connected to the output component. One end of the circuit board (3) extends to the magnetic ring (5). Two Hall sensors that cooperate with the magnetic ring (5) are disposed on the circuit board (3).

2. The Venetian blind motor according to claim 1, characterized in that: Both ends of the outer shell (1) are connected to shock-absorbing pads (6).

3. A Venetian blind motor according to claim 1, characterized in that: The clutch is an electromagnetic clutch.

4. A Venetian blind motor according to claim 1, characterized in that: The clutch includes an iron ring (41), a clutch element (42), a driven element (43), and two magnetic beads (44). The motor assembly (2) includes a motor (21) and a reducer (22). The motor (21) is connected to the reducer (22). The iron ring (41) is fixedly connected to the reducer (22). The clutch element (42) is fixedly connected to the output shaft of the reducer (22). The two magnetic beads (44) are located on both sides of the clutch element (42) and are attracted to the iron ring (41). The driven element (43) has two grooves (431) that cooperate with the magnetic beads (44).

5. A Venetian blind motor according to claim 4, characterized in that: The driven member (43) is integrally formed with the output member.

6. A Venetian blind motor according to claim 4, characterized in that: The output shaft of the reducer (22) extends with a positioning section (221), and the driven member (43) has a positioning hole (432) on the side facing the output shaft of the reducer (22), and the positioning section (221) extends into the positioning hole (432).

7. A Venetian blind motor according to claim 1, characterized in that: The outer casing (1) includes a housing (11), a left end cover (12) and a right end cover (13), both of which are detachably connected to the housing (11).

8. A Venetian blind motor according to claim 7, characterized in that: A slot (121) is formed on the left end cover (12), and a positioning strip (222) is formed on the outside of the reducer (22), and the positioning strip (222) is inserted into the slot (121).

9. A Venetian blind motor according to claim 7, characterized in that: The left end cap (12) has a clearance hole (122) located between the magnetic ring (5) and the Hall sensor.

10. A Venetian blind, characterized in that: Includes a Venetian blind motor as described in any one of claims 1 to 9.

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