A projector shutter device driven by a bidirectional motor

Abstract

The utility model provides a kind of projector light shutter device of bidirectional motor drive, including shell and the light shield, DC speed reducer, crank rocker assembly, straight light axis track, straight line slider and controller being installed in shell, the straight light axis track is fixed on shell inner wall, the straight line slider is slidably installed on straight light axis track, the light shield is fixed on straight line slider, the crank rocker assembly is connected on straight line slider, the DC speed reducer is connected crank rocker assembly, the controller is connected DC speed reducer, the controller is connected with host computer, the application has more lower cost, small, light, same volume driving moment is more prominent characteristics, such as control more simple, make whole product system more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and specifically to a projector shutter device driven by a bidirectional motor. Background Technology

[0002] A projector light shutter is a device that controls the brightness of a projector's projection. When the projector is normally powered on, opening the light shutter blocks the light, preventing the projector from displaying an image. This function reduces the need to shut down the projector frequently when it's not in use. For example, during a meeting, if the projector is temporarily not in use, you can simply open the light shutter to temporarily cancel the projection without turning it off.

[0003] Existing projector light gates typically use electromagnetic drives or actuators such as servo motors, steppers, or servo motors for control. These mechanisms have technical drawbacks such as high cost, large size, insufficient driving torque for their size, significant noise during operation, high manufacturing cost, and short service life. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a projector shutter device driven by a bidirectional motor, which has outstanding characteristics such as lower cost, smaller size, lighter weight, greater driving torque for the same volume, and simpler control, making the entire product system more stable and reliable in operation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bidirectional motor-driven projector shutter device is characterized by comprising a housing and a light-shielding plate, a DC geared motor, a crank-rocker assembly, a linear optical axis track, a linear slider, and a controller installed within the housing. The linear optical axis track is fixed to the inner wall of the housing, the linear slider is slidably mounted on the linear optical axis track, the light-shielding plate is fixed to the linear slider, the crank-rocker assembly is connected to the linear slider, the DC geared motor is connected to the crank-rocker assembly, the controller is connected to the DC geared motor, and the controller is communicatively connected to a host computer.

[0006] Furthermore: the housing includes a metal frame and a fixed frame snapped onto the metal frame, and the light-shielding plate, DC geared motor, crank rocker assembly and linear optical axis track are respectively fixed on the metal frame and located between the metal frame and the fixed frame.

[0007] Furthermore, a curved arm pressure roller for fixing the housing to the front end of the projector lens is installed on the outside of the fixed frame.

[0008] Furthermore: the crank-rocker assembly includes a drive component, a connecting rod, and a crank-rocker. The connecting rod includes a first connecting rod and a second connecting rod, and the crank-rocker includes a first crank-rocker and a second crank-rocker. The drive component is connected to a DC geared motor. The first connecting rod and the second connecting rod are respectively connected to the drive component. The first crank-rocker and the second crank-rocker are correspondingly connected to the first connecting rod and the second connecting rod.

[0009] Furthermore: the light-shielding sheet is provided in two pieces, namely a first light-shielding sheet and a second light-shielding sheet. The first light-shielding sheet and the second light-shielding sheet are symmetrically fixed on the linear slider. The first crank rocker and the second crank rocker are respectively connected to the first light-shielding sheet and the second light-shielding sheet. When the driving component drives the first connecting rod and the second connecting rod to move and drive the first crank rocker and the second crank rocker to move, the first light-shielding sheet connected to the first crank rocker and the second crank rocker moves upward and the second light-shielding sheet moves downward.

[0010] Furthermore, the controller communicates with the host computer via a wireless network.

[0011] In the above structure: the projector shutter device driven by a bidirectional motor proposed in this utility model includes a housing and a light-shielding plate, a DC geared motor, a crank-rocker assembly, a linear optical axis track, a linear slider, and a controller installed inside the housing. The linear optical axis track is fixed to the inner wall of the housing, the linear slider is slidably installed on the linear optical axis track, the light-shielding plate and the linear slider are fixed together, the crank-rocker assembly is used to drive the linear slider to move, thereby causing the light-shielding plate to move together, the DC geared motor is connected to the crank-rocker assembly and is used to drive the crank-rocker assembly to move, the controller is used to control the DC geared motor, and the host computer is used to send control commands to the controller.

[0012] During operation, the host computer sends control commands to the controller, which then starts the DC geared motor. The DC geared motor drives the crank-rocker assembly to move, which in turn drives the linear slider to move on the linear optical axis track. This causes the light-shielding plate mounted on the linear slider to move, thus opening or closing the light-shielding plate in front of the projector lens.

[0013] The linear optical axis track is set to 3mm, and the linear slider is slidably mounted on it. This can minimize the weight of moving parts, reduce the inertia of the system during operation, reduce structural impact, reduce noise, and improve the life of moving parts, while also significantly reducing manufacturing costs.

[0014] The housing consists of a metal frame and a fixed frame snapped onto the metal frame. Both are made of aluminum alloy, balancing lightweight and structural strength. The light shield, DC geared motor, crank rocker assembly, and linear optical axis track are fixed to the metal frame and located between the metal frame and the fixed frame, thus protecting the internal components.

[0015] The crank-rocker assembly includes a drive unit, a connecting rod, and a crank-rocker. The connecting rod includes a first connecting rod and a second connecting rod, and the crank-rocker includes a first crank-rocker and a second crank-rocker. The drive unit is connected to a DC geared motor. The first and second connecting rods are respectively connected to the drive unit. The first and second crank-rockers are correspondingly connected to the first and second connecting rods. Two light-shielding plates are provided, namely a first light-shielding plate and a second light-shielding plate. The first and second light-shielding plates are symmetrically fixed on a linear slider. The first and second light-shielding plates have a symmetrical opening and closing structure. Through gear meshing, the power is evenly distributed and the inertia of the opening and closing structure is balanced, so that the structure runs smoothly and without noise. The first and second crank-rockers are correspondingly connected to the first and second light-shielding plates. When the drive unit drives the first and second connecting rods to move, causing the first and second crank-rockers to move, the first light-shielding plate connected to the first and second crank-rockers moves upward and the second light-shielding plate moves downward.

[0016] The back of the housing is mounted using four curved pressure rollers, which are tightened by adjusting screws, allowing it to be flexibly clamped to the front of various projector lenses. Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a DC geared motor as a power unit to achieve safe and stable system operation while meeting the requirements of driving torque and motor operation safety. Compared with electromagnetic drives or actuators such as servo motors, steppers, and servo motors, it has outstanding characteristics such as lower cost, smaller size, lighter weight, greater driving torque for the same volume, and simpler control, making the entire product system more stable and reliable.

[0017] Using a 3mm linear optical axis track and a linear slider integrated with the light shield as the driving component of the light shield can minimize the weight of moving parts, reduce the inertia of the system during operation, reduce structural impact, reduce noise, and improve the life of moving parts, while also significantly reducing manufacturing costs. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention; Figure 2 This is the overall assembly drawing of this utility model; Figure 3 This is the front view of this utility model; Figure 4 This is a side view of the present invention.

[0019] List of reference numerals in the attached diagram: 1. Metal frame; 2. Fixed frame; 3. Light-shielding plate; 31. First light-shielding plate; 32. Second light-shielding plate; 4. DC geared motor; 5. Crank-rocker assembly; 51. Drive component; 52. First connecting rod; 53. Second connecting rod; 54. First crank-rocker; 55. Second crank-rocker; 6. Linear optical axis track; 7. Linear slider; 8. Controller. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: like Figure 1-4 As shown, this utility model proposes a bidirectional motor-driven projector shutter device, including a housing and a light-shielding plate 3, a DC geared motor 4, a crank-rocker assembly 5, a linear optical axis track 6, a linear slider 7, and a controller 8 installed inside the housing. The linear optical axis track 6 is fixed to the inner wall of the housing, the linear slider 7 is slidably mounted on the linear optical axis track 6, the light-shielding plate 3 is fixed to the linear slider 7, the crank-rocker assembly 5 is connected to the linear slider 7, the DC geared motor 4 is connected to the crank-rocker assembly 5, and the controller 8 is connected to the DC geared motor 4. The controller 8 is communicatively connected to a host computer. The housing includes a metal frame 1 and a fixed frame 2 snapped onto the metal frame 1. The light-shielding plate 3, the DC geared motor 4, the crank-rocker assembly 5, and the linear optical axis track 6 are respectively fixed to the metal frame 1 and located between the metal frame 1 and the fixed frame 2. A crank arm pressure roller for fixing the housing to the front end of the projector lens is installed on the outside of the fixed frame 2. The crank-rocker assembly 5 includes a drive unit 51, a connecting rod, and a crank-rocker. The connecting rod includes a first connecting rod 52 and a second connecting rod 53. The crank-rocker includes a first crank-rocker 54 and a second crank-rocker 55. The drive unit 51 is connected to the DC geared motor 4. The first connecting rod 52 and the second connecting rod 53 are respectively connected to the drive unit 51. The first crank-rocker 54 and the second crank-rocker 55 are correspondingly connected to the first connecting rod 52 and the second connecting rod 53. The light-shielding plate 3 consists of two pieces, namely a first light-shielding plate 31 and a second light-shielding plate 32. The first light-shielding plate 31 and the second light-shielding plate 32 are symmetrically fixed on the linear slider 7. The first crank rocker arm 54 and the second crank rocker arm 55 are respectively connected to the first light-shielding plate 31 and the second light-shielding plate 32. When the driving component 51 drives the first connecting rod 52 and the second connecting rod 53 to move, causing the first crank rocker arm 54 and the second crank rocker arm 55 to move, the first light-shielding plate 31 connected to the first crank rocker arm 54 and the second crank rocker arm 55 moves upward and the second light-shielding plate 32 moves downward. The controller 8 communicates with the host computer via a wireless network.

[0021] This utility model proposes a bidirectional motor-driven projector shutter device, including a housing and a light-shielding plate 3, a DC geared motor 4, a crank-rocker assembly 5, a linear optical axis track 6, a linear slider 7, and a controller 8 installed inside the housing. The linear optical axis track 6 is fixed to the inner wall of the housing, and the linear slider 7 is slidably mounted on the linear optical axis track 6. The light-shielding plate 3 and the linear slider 7 are integrally fixed. The crank-rocker assembly 5 is used to drive the linear slider 7 to move, thereby causing the light-shielding plate 3 to move along with it. The DC geared motor 4 is connected to the crank-rocker assembly 5 and is used to drive the crank-rocker assembly 5 to move. The controller 8 is used to control the DC geared motor 4, and the host computer is used to send control commands to the controller 8.

[0022] During operation, the host computer sends control commands to the controller 8, which in turn controls the DC geared motor 4 to start. The DC geared motor 4 drives the crank-rocker assembly 5 to move, which in turn drives the linear slider 7 to move on the linear optical axis track 6. This causes the light-shielding plate 3 mounted on the linear slider 7 to move, thereby opening or closing the light-shielding plate 3 in front of the projector lens.

[0023] The linear optical axis track 6 is set to 3mm, and the linear slider 7 is slidably mounted on it. This can minimize the weight of moving parts, reduce the inertia of the system during operation, reduce structural impact, reduce noise, and improve the life of moving parts, while also significantly reducing manufacturing costs.

[0024] The housing includes a metal frame 1 and a fixed frame 2 that is snapped onto the metal frame 1. Both are made of aluminum alloy, which balances lightweight and structural strength. The light shield 3, DC geared motor 4, crank rocker assembly 5 and linear optical axis track 6 are fixed on the metal frame 1 and located between the metal frame 1 and the fixed frame 2, thus protecting the internal parts.

[0025] The crank-rocker assembly 5 includes a drive unit 51, a connecting rod, and a crank-rocker. The connecting rod includes a first connecting rod 52 and a second connecting rod 53. The crank-rocker includes a first crank-rocker 54 and a second crank-rocker 55. The drive unit 51 is connected to the DC geared motor 4. The first connecting rod 52 and the second connecting rod 53 are respectively connected to the drive unit 51. The first crank-rocker 54 and the second crank-rocker 55 are correspondingly connected to the first connecting rod 52 and the second connecting rod 53. Two light-shielding plates 3 are provided, namely a first light-shielding plate 31 and a second light-shielding plate 32. The first light-shielding plate 31 and the second light-shielding plate 32 are symmetrically fixed on... On the linear slider 7, the first light-shielding plate 31 and the second light-shielding plate 32 are symmetrically openable and closed. Through gear meshing transmission, the power is evenly distributed and the inertia of the opening and closing structure is balanced, so that the structure runs smoothly and without noise. The first crank rocker arm 54 and the second crank rocker arm 55 are respectively connected to the first light-shielding plate 31 and the second light-shielding plate 32. When the driving member 51 drives the first connecting rod 52 and the second connecting rod 53 to move and drive the first crank rocker arm 54 and the second crank rocker arm 55 to move, the first light-shielding plate 31 connected to the first crank rocker arm 54 and the second crank rocker arm 55 moves upward and the second light-shielding plate 32 moves downward.

[0026] The back of the housing is mounted using four curved pressure rollers, which are tightened by adjusting screws, allowing it to be flexibly clamped to the front of various projector lenses. This invention uses a DC geared motor 4 as a power unit to achieve safe and stable system operation while meeting the requirements of driving torque and motor operation safety. Compared with electromagnetic drive or actuators such as servo motors, steppers, and servo motors, it has outstanding characteristics such as lower cost, smaller size, lighter weight, greater driving torque for the same volume, and simpler control, making the entire product system more stable and reliable.

[0027] Using a 3mm linear optical axis track 6 and a linear slider 7 integrated with the light shield 3 as the driving components of the light shield 3 can minimize the weight of moving parts, reduce the inertia of the system during operation, reduce structural impact, reduce noise, and improve the life of moving parts, while also significantly reducing manufacturing costs.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. A projector shutter device driven by a bidirectional motor, characterized in that: The device includes a housing and a light-shielding plate (3), a DC geared motor (4), a crank-rocker assembly (5), a linear optical axis track (6), a linear slider (7), and a controller (8) installed inside the housing. The linear optical axis track (6) is fixed to the inner wall of the housing. The linear slider (7) is slidably mounted on the linear optical axis track (6). The light-shielding plate (3) is fixed on the linear slider (7). The crank-rocker assembly (5) is connected to the linear slider (7). The DC geared motor (4) is connected to the crank-rocker assembly (5). The controller (8) is connected to the DC geared motor (4). The controller (8) is connected to a host computer for communication.

2. The projector shutter device driven by a bidirectional motor according to claim 1, characterized in that: The housing includes a metal frame (1) and a fixed frame (2) snapped onto the metal frame (1). The light shield (3), DC geared motor (4), crank rocker assembly (5) and linear optical axis track (6) are respectively fixed on the metal frame (1) and located between the metal frame (1) and the fixed frame (2).

3. The projector shutter device driven by a bidirectional motor according to claim 2, characterized in that: The fixed frame (2) is equipped with a curved arm pressure roller for fixing the housing to the front end of the projector lens.

4. The projector shutter device driven by a bidirectional motor according to claim 1, characterized in that: The crank rocker assembly (5) includes a drive unit (51), a connecting rod, and a crank rocker. The connecting rod includes a first connecting rod (52) and a second connecting rod (53). The crank rocker includes a first crank rocker (54) and a second crank rocker (55). The drive unit (51) is connected to a DC geared motor (4). The first connecting rod (52) and the second connecting rod (53) are respectively connected to the drive unit (51). The first crank rocker (54) and the second crank rocker (55) are correspondingly connected to the first connecting rod (52) and the second connecting rod (53).

5. A bidirectional motor-driven projector shutter device according to claim 1 or 4, characterized in that: The light-shielding sheet (3) consists of two pieces, namely a first light-shielding sheet (31) and a second light-shielding sheet (32). The first light-shielding sheet (31) and the second light-shielding sheet (32) are symmetrically fixed on the linear slider (7). The first crank rocker (54) and the second crank rocker (55) are respectively connected to the first light-shielding sheet (31) and the second light-shielding sheet (32). When the driving member (51) drives the first connecting rod (52) and the second connecting rod (53) to move and drive the first crank rocker (54) and the second crank rocker (55) to move, the first light-shielding sheet (31) connected to the first crank rocker (54) and the second crank rocker (55) moves upward and the second light-shielding sheet (32) moves downward.

6. A projector shutter device driven by a bidirectional motor according to claim 1, characterized in that: The controller (8) communicates with the host computer via a wireless network.

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