Transmission detection mechanism

Abstract

The utility model relates to a transmission detection mechanism which is installed on a transmission box body, and the transmission box body comprises a transmission assembly installed on the transmission box body. The transmission detection mechanism comprises a detection unit installed in the transmission box body and a trigger unit installed on the transmission assembly, the trigger unit rotates along with the transmission assembly, and the detection unit detects motion parameters of the trigger unit. The transmission assembly can be used as a power transmission part for curtain opening and closing functions and dimming functions, and the detection unit and the trigger unit are arranged in the transmission box body, so that the transmission assembly is directly detected, the size of a power mechanism for driving the transmission assembly to move is reduced, and then the overall size of the curtain driving device is reduced. The detection unit can determine corresponding motion parameters of the transmission assembly under triggering of the triggering unit, and therefore the opening and closing stroke and the dimming angle of the curtain are correspondingly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of shading, in particular to an electric curtain, and more particularly to a transmission detection mechanism. Background Art

[0002] The electric curtain is provided with a transmission box device, which can transfer the driving force output by the transmission power mechanism, and the driving force can control the curtain to open and close or dim the light. For example, a lithium battery electric curtain driver is disclosed in the Chinese application publication CN213602477U.

[0003] However, the existing electric curtains use the method of detecting the angle of the power mechanism and then controlling the corresponding angle of the opening and closing function or the dimming function through the built-in program. Since the detection part mainly detects the power mechanism and the detection device is arranged in the power mechanism, the power mechanism needs to be provided with the installation space required for the operation of the detection mechanism, and the motor occupies a large space, which makes the overall volume of the driving device larger, so there is a technical problem that needs to be improved. Utility Model Content

[0004] In order to overcome the problems existing in the related art, an embodiment of the utility model provides a transmission detection mechanism.

[0005] According to a first aspect of an embodiment of the utility model, a transmission detection mechanism is provided, wherein the transmission detection mechanism is installed in a transmission housing, and the transmission housing comprises a transmission assembly installed in the transmission housing:

[0006] The transmission detection mechanism comprises a detection unit installed in the transmission housing and a trigger unit installed on the transmission assembly. The trigger unit rotates with the transmission assembly, and the detection unit detects motion parameters of the trigger unit.

[0007] In one embodiment, the detection unit includes a detection plate and Hall elements distributed on the detection plate, the Hall elements are arranged corresponding to the trigger unit, and the detection plate can be detachably installed in the transmission housing.

[0008] In one embodiment, the trigger unit includes a magnetic ring composed of alternately distributed magnetic regions, the magnetic poles of two adjacent magnetic regions are opposite, the two Hall elements are arranged at intervals and face one side of the magnetic ring, and the detection unit is used to detect the rotation direction and rotation stroke of the trigger unit.

[0009] In one embodiment, the magnetic ring includes a ring body portion in a circular shape and an engaging portion protruding from the ring body portion, the ring body portion is sleeved on the transmission component, and the engaging portion is engaged and connected with the transmission component.

[0010] In one embodiment, two magnetic rings are provided, the transmission assembly includes a first transmission member and a second transmission member, one magnetic ring is installed on the first transmission member, and the other magnetic ring is installed on the second transmission member, and the detection unit is provided with two groups of Hall elements that match the magnetic rings and have corresponding induction.

[0011] In one embodiment, the first transmission member and the second transmission member are coaxially distributed, the two groups of Hall elements are arranged on the same detection board, and the spacing distance between the two groups of Hall elements matches the spacing distance between the magnetic rings.

[0012] In one embodiment, the first transmission member and the second transmission member are arranged in parallel; wherein,

[0013] The detection unit is located between the first transmission member and the second transmission member, and the two groups of Hall elements detect the first transmission member and the second transmission member respectively; or,

[0014] The detection unit includes a first detection plate and a second detection plate. The first detection plate is provided with a Hall element facing the first transmission member, and the second detection plate is provided with a Hall element facing the second transmission member.

[0015] In one embodiment, the transmission housing includes a main housing and an inner bracket assembled in the main housing, the main housing and the inner bracket define the installation of the detection board, and the Hall elements are distributed on both sides of the inner bracket.

[0016] In one embodiment, the inner bracket is provided with an assembly hole, the detection plate is located in the assembly hole, the main box body is provided with an insertion boss that matches and inserts into the assembly hole, and the insertion boss and the assembly hole jointly define the detection plate.

[0017] In one embodiment, the main box body is provided with a positioning portion, the inner bracket abuts against the positioning portion, and the detection plate abuts against the main box body.

[0018] The technical solution provided by the embodiment of the utility model can include the following beneficial effects: the transmission component can be used as the power transmission part for the curtain opening and closing function and the dimming function, and the detection unit and the trigger unit are built into the transmission box, so as to directly detect the transmission component, reduce the volume of the power mechanism driving the transmission component to move, and then reduce the overall volume of the curtain driving device. The detection unit can determine the corresponding motion parameters of the transmission component under the triggering of the trigger unit, so as to adjust the opening and closing stroke and dimming angle of the curtain accordingly.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0021] Figure 1 is a schematic structural diagram showing a transmission box device according to an exemplary embodiment.

[0022] Figure 2 The figure shows an exploded structural diagram of a transmission box device according to an exemplary embodiment.

[0023] Figure 3 It is a schematic structural diagram showing that a detection unit and a trigger unit are installed on an inner bracket according to an exemplary embodiment.

[0024] Figure 4 is a schematic structural diagram showing a transmission detection mechanism according to an exemplary embodiment.

[0025] Figure 5 is a schematic diagram showing the assembly of a magnetic ring and a first transmission member according to an exemplary embodiment.

[0026] In the figure, the transmission case 10; the main case 11; the positioning portion 111; the plug-in boss 112; the inner bracket 12; the assembly hole 121; the frame structure 122; the partition structure 123; the case cover 13; the detection unit 20; the detection plate 21; the Hall element 22; the trigger unit 30; the magnetic ring 31; the ring body 311; the interlocking portion 312; the transmission assembly 40; the first transmission member 41; the second transmission member 42; the positioning groove 43; and the drive mechanism 50. DETAILED DESCRIPTION

[0027] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 5 As shown, the utility model provides a transmission detection mechanism, which is installed in a transmission housing 10, and the transmission housing 10 includes a transmission assembly 40 installed in the transmission housing 10. The transmission assembly 40 is located in the transmission housing 10 and is rotatably connected to the transmission housing 10. The transmission assembly 40 can be used as a power transmission part for the curtain opening and closing function and the dimming function, wherein the transmission assembly 40 includes a transmission gear rotatably connected to the transmission housing 10.

[0031] The transmission detection mechanism includes a detection unit 20 installed in the transmission housing 10 and a trigger unit 30 installed in the transmission assembly 40. The trigger unit 30 rotates with the transmission assembly 40, and the detection unit 20 detects the motion parameters of the trigger unit 30. The trigger unit 30 rotates with the transmission assembly 40, and the detection unit 20 outputs an induced electrical signal during the rotation of the trigger unit 30, thereby detecting the rotation stroke of the transmission assembly 40. For example, the detection unit 20 can be set as a photoelectric sensor for detection; or, the detection unit 20 can be set as a contact sensor for contact triggering; or, the detection unit 20 can be set as an inductive sensor to constitute non-contact detection, such as using a Hall element 22 for magnetic field sensing.

[0032] The detection unit 20 and the trigger unit 30 are built into the transmission housing 10, so as to directly detect the transmission assembly 40, with high detection accuracy, and improve the curtain debugging efficiency. The detection unit 20 can determine the corresponding motion parameters of the transmission assembly 40 under the triggering of the trigger unit 30, so as to adjust the opening and closing stroke and dimming angle of the curtain accordingly.

[0033] In one embodiment, the detection unit 20 includes a detection board 21 and a Hall element 22 distributed on the detection board 21, the Hall element 22 is arranged corresponding to the trigger unit 30, and the detection board 21 can be detachably installed in the transmission housing 10. The detection board 21 is used to connect electronic components to form a circuit. The Hall element 22 is distributed on the detection board 21 to flexibly adapt to the trigger unit 30 at different installation positions, wherein the trigger unit 30 is set as a magnetic ring 31 or a magnetic block to form a trigger structure for the Hall element 22 to generate an electrical signal.

[0034] Optionally, the Hall element 22 can be set to one or more. When the Hall element 22 is set to one, the rotation stroke of the transmission component 40 can be detected. Further, if the Hall element 22 is set to two, the two Hall elements 22 can not only detect the rotation stroke of the transmission component 40, but also detect the direction of the transmission component 40, thereby facilitating the opening and closing function and dimming function control of the curtain.

[0035] In a preferred embodiment, the trigger unit 30 includes a magnetic ring 31 composed of alternating magnetic regions, the magnetic poles of two adjacent magnetic regions are opposite, two Hall elements 22 are arranged at intervals and face one side of the magnetic ring 31, and the detection unit 20 is used to detect the rotation direction and rotation stroke of the trigger unit 30. The magnetic ring 31 is annular in structure and is fixed to the transmission assembly 40. As the transmission assembly 40 rotates, the magnetic regions on the magnetic ring 31 trigger the Hall elements 22 in turn to output electrical signals, thereby detecting the rotation direction and rotation stroke of the trigger unit 30.

[0036] In an optional embodiment, the magnetic ring 31 is an integral ring structure, and has magnetic poles alternately distributed inside to form an integral magnetic ring structure with a stroke detection function. In another optional embodiment, the trigger unit 30 includes an assembly part and a plurality of magnets fixed to the assembly part at intervals, and the plurality of magnets are distributed in a ring shape. The assembly part is fixed to the transmission assembly 40 to rotate with the transmission assembly 40. In another optional embodiment, the transmission assembly 40 is embedded with a plurality of magnets, and the plurality of magnets are distributed in a ring shape. During the rotation of the transmission assembly 40, the magnet triggers the trigger unit 30.

[0037] Further, the magnetic ring 31 includes a circular ring body 311 and an engaging portion 312 protruding from the ring body 311, the ring body 311 is sleeved on the transmission component 40, and the engaging portion 312 is engaged and connected to the transmission component 40. The ring body 311 is an annular structure, and the ring body 311 is composed of multiple magnetic regions. The engaging portion 312 is a multi-point engaging positioning connection structure formed by the radial protrusion of the ring body 311, and correspondingly, the transmission component 40 is provided with a positioning groove 43. The ring body 311 is sleeved on the transmission component 40, and the engaging portion 312 is engaged and fixed in the positioning groove 43 to form an assembly connection structure.

[0038] In one embodiment, two magnetic rings 31 are provided, and the transmission assembly 40 includes a first transmission member 41 and a second transmission member 42, wherein one magnetic ring 31 is installed on the first transmission member 41, and the other magnetic ring 31 is installed on the second transmission member 42. The two magnetic rings 31 are spaced apart and are respectively installed on the first transmission member 41 and the second transmission member 42. The rotation of one of the first transmission member 41 and the second transmission member 42 can drive the corresponding magnetic ring 31 to rotate. The detection unit 20 is provided with two groups of Hall elements 22 that match and sense the magnetic ring 31. As the magnetic ring 31 rotates, the corresponding Hall element 22 outputs an electrical signal, thereby separating and independently providing the opening and closing function and the dimming function.

[0039] The first transmission member 41 and the second transmission member 42 are used as power transmission components. In a preferred embodiment, the first transmission member 41 and the second transmission member 42 can be set as a gear structure, wherein the gear structure can be a gear in the main transmission box on the electric curtain, wherein the gear can be used to control the opening and closing of the curtain or to control the dimming of the curtain. In another preferred embodiment, the first transmission member 41 and the second transmission member 42 can be set as a clutch structure, specifically, they can be output members on the clutch structure, and the output members on the clutch structure are connected to the transmission structure in the main transmission box on the electric curtain through the transmission connection; wherein the clutch structure can be two, one for the clutch required for the transmission control of the curtain opening and closing function, and the other for the clutch required for the transmission control of the curtain dimming function.

[0040] Further preferably, the first transmission member 41 and the second transmission member 42 are coaxially distributed, the two groups of Hall elements 22 are arranged on the same detection plate 21, and the spacing distance between the two groups of Hall elements 22 matches the spacing distance between the magnetic ring 31. The detection plate 21 is installed across the transmission housing 10, and the spacing distance between the two groups of Hall elements 22 is a fixed value. The magnetic ring 31 can be adjusted along the axial direction of the first transmission member 41 and the second transmission member 42 to achieve a suitable detection position and improve the accuracy of the detection. The detection unit 20 is assembled as a whole to improve the convenience of assembly, and the position of the magnetic ring 31 can be adjusted according to the fitting position to adapt to different detection angles.

[0041] In another embodiment, the first transmission member 41 and the second transmission member 42 are arranged in parallel, that is, the first transmission member 41 and the second transmission member 42 are driven independently, and the two are adapted to a dual drive input structure to form an independent drive detection. The detection unit 20 performs independent detection on the first transmission member 41 and the second transmission member 42 respectively.

[0042] In an optional embodiment, the detection unit 20 is located between the first transmission member 41 and the second transmission member 42, and the two groups of Hall elements 22 respectively detect the first transmission member 41 and the second transmission member 42. In this embodiment, the two groups of Hall elements 22 are arranged on the same detection board 21 and are arranged back to back, with one group of Hall elements 22 facing the first transmission member 41 and the other group of Hall elements 22 facing the second transmission member 42. The two groups of Hall elements 22 can be independently arranged and can be assembled uniformly, simplifying the assembly and internal circuits.

[0043] In another optional embodiment, the detection unit 20 includes a first detection plate and a second detection plate, the first detection plate is provided with a Hall element 22 facing the first transmission member 41, and the second detection plate is provided with a Hall element 22 facing the second transmission member 42. In this embodiment, two groups of Hall elements 22 are respectively provided on two detection plates 21, each detection plate 21 is independently installed, and the Hall element 22 of one detection plate 21 faces the first transmission member 41 and independently adjusts the detection position, and the Hall element 22 of the other detection plate 21 faces the second transmission member 42 and independently adjusts the detection position. The two groups of Hall elements 22 can be independently provided and independently adjusted without interfering with each other, and the detection positions can be flexibly arranged.

[0044] like Figures 1 to 5 As shown, in one embodiment, the transmission housing 10 includes a main housing 11 and an inner bracket 12 assembled in the main housing 11, the main housing 11 and the inner bracket 12 define an installation detection plate 21, and Hall elements 22 are distributed on both sides of the inner bracket 12. The main housing 11 is a thin-walled cavity structure, and the inner bracket 12 can be detachably assembled in the main housing 11 to form an assembly fit. The main housing 11 and the inner bracket 12 jointly define the installation detection plate 21 to adjust the distribution position of the Hall element 22. In an optional embodiment, the main housing 11 and the inner bracket 12 clamp the positioning detection plate 21. In an optional embodiment, the inner bracket 12 is provided with a positioning slide groove, the detection plate 21 is installed in the positioning slide groove, and the main housing 11 partially presses against the detection plate 21. In an optional embodiment, the detection plate 21 is installed on the inner bracket 12, and is integrally installed to the main housing 11 with the inner bracket 12 to form an integral assembly.

[0045] Preferably, the inner bracket 12 is provided with an assembly hole 121, the detection plate 21 is located in the assembly hole 121, and the main box body 11 is provided with a plug-in boss 112 that matches the plug-in assembly hole 121, and the plug-in boss 112 and the assembly hole 121 jointly define the detection plate 21. The inner bracket 12 is a frame structure 122, which includes a partition structure 123 and a frame structure 122, wherein the partition structure 123 is used to divide the space inside the main box body 11 into two regional spaces. The first transmission member 41 is located in the front regional space, and the second transmission member 42 is located in the rear regional space. The assembly hole 121 passes through the partition structure 123 to connect the two regional spaces, and the detection plate 21 extends along the assembly hole 121 to correspond to the induction of the magnetic ring 31 located in the two regional spaces.

[0046] Further, the main housing 11 is provided with a positioning portion 111, the inner bracket 12 abuts against the positioning portion 111, and the detection plate 21 abuts against the main housing 11. The positioning portion 111 is a step surface or a step column provided on the main housing 11, and is used to locate the installation depth and installation position of the inner bracket 12. The detection plate 21 passes through the inner bracket 12 and abuts against the main housing 11, which can eliminate the disadvantage of fastener locking, and can be clamped and positioned by the main housing 11 and the inner bracket 12. Preferably, the transmission housing 10 includes a housing cover 13, and the housing cover 13 is provided at the opening of the main housing 11 to limit the components in the main housing 11.

[0047] The transmission detection mechanism disclosed in the above embodiment is applied to a transmission box device, wherein the transmission box device includes a transmission box body 10, a driving mechanism 50, a transmission assembly 40 and a transmission detection mechanism, wherein the transmission assembly 40 is a first transmission member 41 and a second transmission member 42 rotatably mounted on the transmission box body 10. The driving mechanism 50 is connected to the transmission assembly 40 and drives the transmission assembly 40 to rotate, and the driving mechanism 50 drives one of the first transmission member 41 and the second transmission member 42 to rotate, so that the transmission detection mechanism detects the change of the magnetic field output by a magnetic ring 31, thereby controlling the opening and closing stroke or dimming angle of the curtain.

[0048] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0049] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A transmission detection mechanism, characterized in that: The transmission housing (10) comprises a transmission assembly (40) mounted on the transmission housing (10); the transmission detection mechanism comprises a detection unit (20) mounted in the transmission housing (10) and a trigger unit (30) mounted on the transmission assembly (40); the trigger unit (30) rotates with the transmission assembly (40); and the detection unit (20) detects motion parameters of the trigger unit (30).

2. The transmission detection mechanism according to claim 1, characterized in that: The detection unit (20) comprises a detection plate (21) and Hall elements (22) distributed on the detection plate (21); the Hall elements (22) are arranged corresponding to the trigger unit (30); and the detection plate (21) is detachably mounted in the transmission housing (10).

3. The transmission detection mechanism according to claim 2, characterized in that: The trigger unit (30) comprises a magnetic ring (31) composed of alternately distributed magnetic regions, the magnetic poles of two adjacent magnetic regions being opposite, the two Hall elements (22) being arranged at intervals and facing one side of the magnetic ring (31), and the detection unit (20) being used to detect the rotation direction and rotation stroke of the trigger unit (30).

4. The transmission detection mechanism according to claim 3, characterized in that: The magnetic ring (31) comprises a circular ring body portion (311) and an engaging portion (312) protruding from the ring body portion (311); the ring body portion (311) is sleeved on the transmission assembly (40); and the engaging portion (312) is engaged and connected to the transmission assembly (40).

5. The transmission detection mechanism according to claim 3, characterized in that: Two magnetic rings (31) are provided, and the transmission assembly (40) comprises a first transmission member (41) and a second transmission member (42), wherein one magnetic ring (31) is mounted on the first transmission member (41), and the other magnetic ring (31) is mounted on the second transmission member (42), and the detection unit (20) is provided with two groups of Hall elements (22) that match and sense the magnetic rings (31).

6. The transmission detection mechanism according to claim 5, characterized in that: The first transmission member (41) and the second transmission member (42) are coaxially distributed, the two groups of Hall elements (22) are arranged on the same detection plate (21), and the spacing distance between the two groups of Hall elements (22) matches the spacing distance of the magnetic ring (31).

7. The transmission detection mechanism according to claim 5, characterized in that: The first transmission member (41) and the second transmission member (42) are arranged in parallel; wherein: The detection unit (20) is located between the first transmission member (41) and the second transmission member (42), and the two groups of Hall elements (22) detect the first transmission member (41) and the second transmission member (42) respectively; or, The detection unit (20) comprises a first detection plate and a second detection plate, the first detection plate being provided with a Hall element (22) facing the first transmission member (41), and the second detection plate being provided with a Hall element (22) facing the second transmission member (42).

8. The transmission detection mechanism according to claim 2, characterized in that: The transmission housing (10) comprises a main housing (11) and an inner bracket (12) mounted in the main housing (11); the main housing (11) and the inner bracket (12) define a mounting for the detection plate (21); and the Hall elements (22) are distributed on both sides of the inner bracket (12).

9. The transmission detection mechanism according to claim 8, characterized in that: The inner bracket (12) is provided with an assembly hole (121), the detection plate (21) is located in the assembly hole (121), the main box body (11) is provided with a plug-in boss (112) that matches and plugs into the assembly hole (121), and the plug-in boss (112) and the assembly hole (121) together define the detection plate (21).

10. The transmission detection mechanism according to claim 8, characterized in that: The main box body (11) is provided with a positioning portion (111), the inner bracket (12) abuts against the positioning portion (111), and the detection plate (21) abuts against the main box body (11).

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