Transmission wheel, transmission structure and curtain machine

Abstract

The utility model provides a transmission wheel, a transmission structure and a curtain machine, the transmission wheel comprises a wheel body, a plurality of transmission teeth arranged along the circumferential direction are arranged outside the wheel body, and a plurality of detection sheets distributed along the circumferential direction at intervals are also arranged on the wheel body. The transmission structure comprises a transmission box and a driving box, the transmission box is internally provided with the transmission wheel and further provided with a detection module used for detecting the detection pieces, the transmission box is provided with a first plug-in, and the detection module is electrically connected with the first plug-in. A motor and a main circuit board are arranged in the driving box, the motor is in transmission connection with the transmission wheel, a second plug-in unit is arranged on the driving box, the second plug-in unit is electrically connected with the main circuit board, and the second plug-in unit is connected with the first plug-in unit in a pluggable mode. The transmission wheel is provided with the transmission teeth and the detection piece at the same time, and compared with the mode that a magnetic induction piece is arranged in the prior art, the transmission wheel is convenient to manufacture and low in manufacturing cost; according to the transmission structure, related components with a rotation angle detection function are arranged in the transmission box, so that the size of the driving box can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of curtain machine technology, and in particular to a transmission wheel, transmission structure, and curtain machine. Background Technology

[0002] Vertical blind motors (hereinafter referred to as blind motors) have multiple slats. The opening and closing of the blinds is achieved by adjusting the position of the slats, and the light transmission angle of the blinds is adjusted by turning the slats to different angles. Referring to existing technology CN220631850U, current blind motors generally include a guide rail, with transmission boxes at both ends of the guide rail. A synchronous belt is installed inside the guide rail, and a synchronous pulley is installed inside the transmission box. The slats are mounted on the synchronous belt, and the synchronous pulley drives the synchronous belt to achieve the opening and closing or turning of the slats. One of the transmission boxes is connected to a drive box, which contains a motor for driving the synchronous pulley to rotate.

[0003] In existing technologies, rotation angle detection is achieved through the combination of magnetic sensing elements and Hall elements. However, the assembly process of magnetic sensing elements in this arrangement is complicated and labor costs are high. In addition, the industry is constantly optimizing the structure of the drive box in order to reduce its size, and the current size of the drive box needs to be reduced. Utility Model Content

[0004] In view of this, the present invention proposes a transmission wheel, a transmission structure, and a curtain machine, with the aim of optimizing at least one aspect of the curtain machine, such as the rotation angle detection structure and the volume of the drive box.

[0005] The technical solution of the first aspect of this utility model is implemented as follows:

[0006] A transmission wheel includes a wheel body, the wheel body having a plurality of transmission teeth arranged circumferentially, and the wheel body also having a plurality of detection plates spaced apart circumferentially.

[0007] As a further optional solution, an inner cavity is formed within the wheel body, and a coaxially arranged drive shaft is provided within the inner cavity. Several slots are recessed in the inner circumferential wall of the inner cavity. A lever is provided on the drive shaft, and the lever is fixed relative to the drive shaft in the circumferential direction. At least one movable roller is provided within the inner cavity, and a damping element is provided on the wheel body. The damping element and the roller form a magnetic traction engagement, and the roller engages in the slots by cooperating with the lever.

[0008] As a further optional solution, the wheel body and the detection plate are an integral structure.

[0009] As a further alternative, the damping element is sleeved on the drive shaft, and one of the damping element and the roller is made of a magnetic material, while the other is made of a magnetic metal material.

[0010] The second aspect of this utility model is implemented as follows:

[0011] A transmission structure, comprising:

[0012] A transmission box, wherein any of the above-mentioned transmission wheels are provided inside the transmission box, and a detection module is also provided. The detection module is used to detect the detection piece. A first plug is provided on the transmission box, and the detection module is electrically connected to the first plug.

[0013] The drive box contains a motor and a main circuit board. The motor is connected to the transmission wheel. The drive box has a second plug-in, which is electrically connected to the main circuit board. The second plug-in is pluggable to the first plug-in to realize the electrical connection between the detection module and the main circuit board.

[0014] As a further optional solution, the drive box is provided with a socket for inserting the drive shaft, and the drive shaft is connected to the motor after being inserted into the socket.

[0015] As a further optional solution, the detection module includes a circuit board and two photoelectric detection components disposed on the circuit board. Each photoelectric detection component includes a signal output unit and a signal receiving unit. The signal output unit and the signal receiving unit on the two photoelectric detection components are arranged linearly on one side of the rotation path of the detection piece. The light signal output by the signal output unit is reflected by the detection piece to the signal receiving unit to realize the detection of the detection piece.

[0016] As a further alternative, one of the first plug-in and the second plug-in is a socket and the other is a plug; the first plug-in is disposed on the circuit board and the second plug-in is disposed on the main circuit board, and the circuit board and the main circuit board form a board-to-board connection structure.

[0017] As a further optional solution, the circuit board is provided with two signal output units and two signal receiving units, wherein one signal output unit and one signal receiving unit form a photoelectric detection component, and the other signal output unit and the other signal receiving unit form another photoelectric detection component;

[0018] Alternatively, the circuit board may have one signal output unit and two signal receiving units, wherein the signal output unit and one of the signal receiving units form a photoelectric detection component, and the signal output unit and the other signal receiving unit form another photoelectric detection component.

[0019] The technical solution of the third aspect of this utility model is implemented as follows:

[0020] A curtain machine comprising any of the aforementioned drive wheels.

[0021] The transmission wheel, transmission structure, and curtain machine of this application have at least the following advantages compared to the prior art:

[0022] 1. This transmission wheel has both transmission teeth and detection plates, enabling it to perform both transmission and rotation angle detection functions. Compared to the existing technology that uses magnetic induction elements, this transmission wheel is easier to manufacture and has lower manufacturing costs.

[0023] 2. By placing the relevant components for the rotation angle detection function inside the transmission box, this transmission structure can effectively reduce the size of the drive box.

[0024] Other further beneficial effects of this application are demonstrated in the specific embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a transmission wheel according to an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of a transmission wheel according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a transmission structure according to an embodiment of the present utility model;

[0029] Figure 4 This is an exploded view of a transmission structure according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram showing the interaction between the transmission wheel and the detection module;

[0031] Figure 6 This is a schematic diagram showing the interaction between the detection module and the main circuit board;

[0032] Figure 7 This is a schematic diagram illustrating the positional relationship between the detection module and the detection piece in one embodiment;

[0033] Figure 8 This is a schematic diagram illustrating the positional relationship between the detection module and the detection piece in one embodiment, state two.

[0034] Figure 9 This is a schematic diagram illustrating the positional relationship between the detection module and the detection piece in one embodiment, state three.

[0035] Figure 10 This is a schematic diagram illustrating the positional relationship between the detection module and the detection piece in one embodiment, state four.

[0036] Figure 11 A schematic diagram showing the encapsulation structure on the circuit board of the detection module;

[0037] Figure 12 This is a schematic diagram of the structure of two photoelectric detection components on the detection module in another embodiment.

[0038] In the diagram: 1. Drive wheel; 11. Wheel body; 111. Drive gear; 112. Detector plate; 113. Inner cavity; 114. Bayonet; 12. Drive shaft; 13. Pulley; 14. Damping component;

[0039] 2. Transmission box; 21. First insert;

[0040] 3. Driver box; 31. Second plug-in;

[0041] 4. Detection module; 41. Circuit board; 42. Photoelectric detection component; 421. Signal output unit; 422. Signal receiving unit; 43. Sealed plastic plate; 431. Cavity;

[0042] 5. Main circuit board. Detailed Implementation

[0043] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0046] Example 1

[0047] refer to Figure 1 Embodiment 1 shows a transmission wheel, including a wheel body 11, with a plurality of transmission teeth 111 arranged circumferentially on the outside of the wheel body 11, and a plurality of detection plates 112 distributed circumferentially at intervals on the wheel body 11.

[0048] The transmission wheel 1 can be used inside the transmission box 2 of the curtain machine to cooperate with the transmission belt inside the curtain machine. Simultaneously, the detection plate 112 on the transmission wheel 1 can be used to detect the rotation angle, thereby controlling the flip angle of the curtain slats on the curtain machine. Thus, the transmission wheel 1 simultaneously possesses transmission teeth 111 and detection plate 112, enabling both transmission and rotation angle detection functions. Furthermore, compared to the existing technology that uses magnetic induction elements, this transmission wheel 1 is easier to manufacture and has lower manufacturing costs.

[0049] Specifically, in the above scheme, the wheel body 11 and the detection piece 112 are an integral structure. For example, the wheel body 11 and the detection piece 112 can be made of plastic and integrally injection molded.

[0050] In some embodiments, reference Figure 2 The wheel body 11 has an inner cavity 113, within which a coaxially arranged drive shaft 12 is disposed. The inner circumferential wall of the inner cavity 113 has several recesses 114. A lever 13 is mounted on the drive shaft 12, and the lever 13 is circumferentially fixed to the drive shaft 12. At least one movable roller (not shown) is disposed within the inner cavity 113. A damping element 14 is mounted on the wheel body 11, and the damping element 14 forms a magnetic traction engagement with the roller. The roller engages with the lever 13 within the recesses 114. The damping element 14 is sleeved on the drive shaft 12. One of the damping element 14 and the roller is made of a magnetic material, and the other is made of a magnetic metal material.

[0051] In this embodiment, a clutch structure is formed inside the wheel body 11. When the drive shaft 12 drives the lever 13 to rotate, the lever 13 can push the roller away from the axis of the wheel body 11, and the roller approaches the inner peripheral wall of the inner cavity 113 and gets into the slot 114. This allows the drive shaft 12 to drive the wheel body 11 to rotate through the roller, while the wheel body 11 cannot drive the drive shaft 12 to rotate, realizing unidirectional transmission from the drive shaft 12 to the wheel body 11. The working principle of the clutch structure between the drive shaft 12 and the wheel body 11 can also be found in the prior art CN211314907U.

[0052] Thus, the transmission wheel 1 has transmission function, clutch function, and function of detecting rotation angle. At the same time, the transmission wheel 1 is small in size and low in manufacturing cost. When applied to the transmission structure of a curtain machine, it can make the transmission structure of the curtain machine even smaller.

[0053] Example 2

[0054] refer to Figure 3-6 Embodiment 2 illustrates a transmission structure for a curtain machine, which includes a transmission box 2 and a drive box 3.

[0055] The transmission box 2 is provided with a transmission wheel 1 as described in Embodiment 1, and also with a detection module 4. The detection module 4 is used to detect the detection piece 112 on the transmission wheel 1. The transmission box 2 is provided with a first plug-in 21, and the detection module 4 is electrically connected to the first plug-in 21.

[0056] The drive box 3 contains a motor and a main circuit board 5. The motor is connected to the transmission wheel 1. The drive box 3 has a second plug-in 31, which is electrically connected to the main circuit board 5. The main circuit board 5 has a control circuit for controlling the curtain machine. The second plug-in 31 is plugged into and detached from the first plug-in 21 to realize the electrical connection between the detection module 4 and the main circuit board 5.

[0057] Thus, in this transmission structure, the relevant components (detection plate 112 and detection module 4) that realize the rotation angle detection function are set in the transmission box 2, which can effectively reduce the volume of the drive box 3.

[0058] like Figure 3 As shown, the drive box 3 has a socket for inserting the drive shaft 12. After the drive shaft 12 is inserted into the socket, it is connected to the motor for transmission. The drive box 3 and the transmission housing 2 are detachably connected, for example, by bolts or clips.

[0059] More specifically, the detection module 4 includes a circuit board 41 and two photoelectric detection components 42 disposed on the circuit board 41. Each photoelectric detection component 42 includes a signal output unit 421 and a signal receiving unit 422. The signal output unit 421 and the signal receiving unit 422 on the two photoelectric detection components 42 are arranged linearly on one side of the rotation path of the detection plate 112. Figure 5 (on the upper or lower side of the detection sheet), the signal output unit 421 outputs an optical signal which is reflected by the detection sheet 112 to the signal receiving unit 422, so as to realize the detection of the detection sheet 112.

[0060] In some implementations, such as Figure 7-10 As shown, the circuit board 41 is provided with two signal output units 421 and two signal receiving units 422. One signal output unit 421 and one signal receiving unit 422 form a photoelectric detection component 42, and the other signal output unit 421 and the other signal receiving unit 422 form another photoelectric detection component 42.

[0061] For ease of description, such as Figure 7 As shown, one of the photoelectric detection components 42 is defined as K1, and the other photoelectric detection component 42 is defined as K2;

[0062] The detection process of the two photoelectric detection components 42 on the detection piece 112 is as follows:

[0063] like Figure 7 As shown, at this time, the detection piece 112 does not block the optical signal output path of the signal output unit 421, and the optical signal cannot be reflected to the signal receiving unit 422. At this time, K1 and K2 are both disconnected.

[0064] As the transmission wheel 1 rotates clockwise, Figure 8 As shown, when the detection piece 112 blocks K1 but not K2, the light signal emitted by the signal output unit 421 in K1 is reflected by the detection piece 112 to the signal receiving unit 422 in K1. At this time, K1 is turned on and K2 is turned off.

[0065] Drive wheel 1 rotates further, as Figure 9 As shown, the detection piece 112 blocks K2 but not K1. The light signal emitted by the signal output unit 421 in K2 is reflected by the detection piece 112 to the signal receiving unit 422 in K2. At this time, K1 is disconnected and K2 is turned on.

[0066] Drive wheel 1 rotates further, as Figure 10 As shown, the detection pieces 112 are blocked on K1 and K2, and at this time both K1 and K2 are conductive;

[0067] In this way, the clockwise rotation counting of the detection piece 112 is completed; the detection principle is the same for the counterclockwise rotation of the detection piece 112.

[0068] Specifically, in the above scheme, the signal output unit 421 can be a light-emitting diode (LED), and the signal receiving unit 422 can be a photosensitive element, such as a photodiode or a photoresistor. Conventionally, in the prior art, to avoid mutual interference between the optical signals of the two photoelectric detection components 42, the signal output unit 421 (LED) and the signal receiving unit 422 (photosensitive element) are encapsulated. In this embodiment, for example... Figure 11 As shown, a plastic encapsulation plate 43 is disposed on the circuit board. The plastic encapsulation plate 43 has multiple cavities 431. The signal output unit 421 and the signal receiving unit 422 are disposed within the cavities 431. The plastic encapsulation plate is black to absorb dissipated light signals and prevent mutual interference between the light signals of the two photoelectric detection components 42. Of course, in other embodiments, other encapsulation structures can also be used to achieve isolation between the two photoelectric detection components 42.

[0069] In this embodiment, the width of the detection sheet 112 can simultaneously cover two photoelectric detection components 42, and the spacing between the two detection sheets 112 can simultaneously cover two photoelectric detection components 42; in this embodiment, there are six detection sheets 112. In other embodiments, the number of detection sheets 112 can be set according to actual needs.

[0070] In other implementations, to further reduce costs, such as Figure 12 As shown, the circuit board 41 has a signal output unit 421 and two signal receiving units 422. The signal output unit 421 and one of the signal receiving units 422 form a photoelectric detection component 42, and the signal output unit 421 and the other signal receiving unit 422 form another photoelectric detection component 42. In this embodiment, one signal output unit 421 is reduced, but the working principle of detecting the detection chip 112 is the same as described above.

[0071] Compared to existing technologies, this embodiment sets the photoelectric detection component 42 on the detection module 4 and the detection plate 112 on the transmission wheel 1 as a reflective detection structure, making the structure of the detection module 4 more flat and reducing the height space requirements of the detection module 4. At the same time, the detection plate 112 is set on the transmission wheel 1, so even if the relevant components (detection plate 112 and detection module 4) for realizing the rotation angle detection function are set in the transmission box 2, the volume of the transmission box 2 remains almost unchanged, while the volume of the drive box 3 can be effectively reduced.

[0072] The above-mentioned solutions are specific, such as Figure 6As shown, one of the first plug-in 21 and the second plug-in 31 is a socket, and the other is a plug; the first plug-in 21 is disposed on the circuit board 41, and the second plug-in 31 is disposed on the main circuit board 5, forming a board-to-board connection structure between the circuit board 41 and the main circuit board 5. Notably, there is no need for a wire connection between the circuit board 41 and the main circuit board 5, facilitating wiring organization.

[0073] The transmission structure in this embodiment can effectively reduce the volume of the drive box 3 compared to the prior art, while not significantly affecting the volume of the transmission box 2.

[0074] Furthermore, it should be noted that this embodiment does not modify the control principle or control circuit of the curtain machine.

[0075] Example 3

[0076] A curtain machine includes a drive wheel 1 as described in Embodiment 1.

[0077] Example 4

[0078] A curtain machine, comprising the transmission structure of Embodiment 2.

[0079] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transmission wheel, characterized in that, The device includes a wheel body, which has multiple transmission teeth arranged circumferentially on its exterior. The wheel body also has multiple detection plates spaced apart circumferentially on its exterior. The wheel body and the detection plates are an integral structure.

2. The transmission wheel according to claim 1, characterized in that, The wheel body has an inner cavity, and a coaxially arranged drive shaft is provided in the inner cavity. The inner circumferential wall of the inner cavity is recessed with several slots. A lever is provided on the drive shaft, and the lever is fixed relative to the drive shaft in the circumferential direction. At least one movable roller is provided in the inner cavity, and a damping element is provided on the wheel body. The damping element and the roller form a magnetic traction engagement. The roller engages in the slots by cooperating with the lever.

3. The transmission wheel according to claim 2, characterized in that, The damping element is sleeved on the drive shaft. One of the damping element and the roller is made of magnetic material, and the other is made of magnetic metal material.

4. A transmission structure, characterized in that, include: A transmission box, wherein the transmission box is provided with any one of the transmission wheels of claims 2-3, and further provided with a detection module, wherein the detection module is used to detect the detection piece, and the transmission box is provided with a first plug-in, wherein the detection module is electrically connected to the first plug-in; The drive box contains a motor and a main circuit board. The motor is connected to the transmission wheel. The drive box has a second plug-in, which is electrically connected to the main circuit board. The second plug-in is pluggable to the first plug-in to realize the electrical connection between the detection module and the main circuit board.

5. The transmission structure according to claim 4, characterized in that, The drive box has a socket for inserting the drive shaft, and the drive shaft is connected to the motor after being inserted into the socket.

6. The transmission structure according to claim 4, characterized in that, The detection module includes a circuit board and two photoelectric detection components disposed on the circuit board. Each photoelectric detection component includes a signal output unit and a signal receiving unit. The signal output unit and the signal receiving unit on the two photoelectric detection components are arranged linearly on one side of the rotation path of the detection piece. The light signal output by the signal output unit is reflected by the detection piece to the signal receiving unit to realize the detection of the detection piece.

7. The transmission structure according to claim 6, characterized in that, One of the first plug-in and the second plug-in is a socket, and the other is a plug; the first plug-in is disposed on the circuit board, and the second plug-in is disposed on the main circuit board, and the circuit board and the main circuit board form a board-to-board connection structure.

8. The transmission structure according to claim 6, characterized in that: The circuit board is provided with two signal output units and two signal receiving units. One signal output unit and one signal receiving unit form a photoelectric detection component, and the other signal output unit and the other signal receiving unit form another photoelectric detection component. Alternatively, the circuit board may have one signal output unit and two signal receiving units, wherein the signal output unit and one of the signal receiving units form a photoelectric detection component, and the signal output unit and the other signal receiving unit form another photoelectric detection component.

9. A curtain machine, characterized in that, Includes any one of the transmission wheels according to claims 1-3.

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