JP3240664U - Rotating device that can adjust the projection angle in a wide range - Google Patents

Abstract

A rotating device capable of adjusting the projection angle of a projection ceiling light over a wide range is provided. A rotating device includes a substrate (1), a movable plate (2), a connecting screw (3) and a driving mechanism, the movable plate is hingedly connected to the substrate, the driving mechanism is connected to the movable plate, and the lower end of the connecting screw is connected to the substrate. and a connecting screw passes through and is threadedly engaged with the drive mechanism. The rotation of the drive motor 41 drives the rotation of the drive gear 42, which in turn drives the rotation of the driven gear 43, converting the torsional action between the driven gear and the connecting screw into a tensile action on the connecting screw. Thereby, the angle between the substrate and the movable plate can be adjusted. Since the hinge connection rod rotates along the hinge connection seat and slides along the oblong hole, the limited degree of freedom of the connection screw is released, and the drive motor does not require a large torsional force, resulting in a rational space layout. It is easy to adjust the projection angle over a wide range. [Selection drawing] Fig. 1

Description

FIELD OF THE INVENTION The present invention belongs to the technical field of projection ceiling lights, and more particularly to a rotation device capable of adjusting the projection angle over a wide range.

A ceiling light is a type of lighting fixture, and as the name suggests, the top of the lighting fixture is relatively flat, and the bottom is completely attached to the ceiling when installed, so it is called a ceiling light. The light sources include ordinary white light bulbs, fluorescent lights, high-intensity gas discharge lamps, halogen lamps, LEDs, etc. In order to meet the needs of a wide range of customers, the projector is integrated into the ceiling light to form a projection ceiling light.

Conventionally, due to the heavy weight of the projector and the limited space in the ceiling light, directly driving the rotation of the rotary shaft by the drive motor not only requires a larger torsional force, but also increases the adjustment angle of the projector. limited.

The purpose of the present invention is that the projector is heavy and the space in the ceiling light is limited, so that a larger torsional force is required than if the rotation of the rotary shaft is directly driven by the drive motor, and the adjustment angle of the projector is limited. To solve the problem, the object is to propose a rotating device capable of adjusting the projection angle over a wide range.

In order to achieve the above objectives, the present invention adopts a technical solution for a rotating device with a wide range of projection angle, which comprises a base plate, a movable plate and a connecting screw. and a driving mechanism, wherein the movable plate is hingedly connected to the substrate, the driving mechanism is connected to the movable plate, the lower end of the connecting screw is connected to the substrate, and the connecting screw passes through the driving mechanism. and screwed to the drive mechanism.

As a further explanation of the above technical solution, the driving mechanism comprises a driving motor, a driving gear and a driven gear, the driving gear and the driven gear are both hingedly connected to the movable plate, and the driving gear is engaged with the driven gear, the drive motor is fixedly attached to the movable plate, the drive motor is connected to the drive gear, and the connecting screw passes through the driven gear and is screwed into the driven gear. ing.

As a further explanation of the above technical solution, the movable plate is connected with a shielding plate that abuts on the drive gear and the driven gear.

As a further explanation of the above technical solution, the axis of the driven gear and the axis of the connecting screw are coincident.

As a further explanation of the above technical solution, a hinge connection seat is provided on the board, the hinge connection seat is drilled with an oblong hole, and the lower end of the connection screw is provided with the oblong A hinge connecting rod is provided for insertion into the bore.

As a further explanation of the above technical solution, the substrate and the movable plate are connected through two central rotation shafts.

As mentioned above, by adopting the above technical solutions, the present invention has the following beneficial effects.

In the present invention, the rotation of the drive motor drives the rotation of the drive gear, which in turn drives the rotation of the driven gear, and converts the torsional action between the driven gear and the connecting screw into a tensile action on the connecting screw. By doing so, the angle between the substrate and the movable plate can be adjusted. In this case, since the hinge connecting rod rotates along the hinge connecting seat and slides along the oblong hole, the limited degree of freedom of the connecting screw is released, and the drive motor does not require a large torsional force, and the space The layout is reasonable and the projection angle is easy to adjust in a wide range.

FIG. 2 is a schematic diagram of the overall structure of a rotation device capable of adjusting the projection angle over a wide range; FIG. 11 is another structural schematic diagram of a rotation device capable of adjusting the projection angle in a wide range; FIG. 4 is a schematic diagram of the internal structure of a rotating device that can adjust the projection angle over a wide range. FIG. 10 is a reference diagram of a usage state of a rotation device capable of adjusting a projection angle over a wide range;

The following clearly and completely describes the technical solutions in the embodiments of the present invention in combination with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some embodiments of the present invention rather than all embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in the present invention should fall within the protection scope of the present invention.

Referring to FIGS. 1 to 4, the present invention provides a rotating device for adjusting the projection angle in a wide range as a technical solution, which comprises a substrate 1 and a movable plate 2. , a connecting screw 3 and a driving mechanism 4, the movable plate 2 is hinge-connected to the substrate 1, the driving mechanism 4 is connected to the movable plate 2, and the lower end of the connecting screw 3 is connected to the substrate 1. The connecting screw 3 passes through the drive mechanism 4 and is screwed into the drive mechanism 4 .

The drive mechanism 4 includes a drive motor 41, a drive gear 42, and a driven gear 43. Both the drive gear 42 and the driven gear 43 are hinge-connected to the movable plate 2, and the drive gear 42 is connected to the The driving motor 41 is fixedly attached to the movable plate 2, the driving motor 41 is connected to the driving gear 42, and the connecting screw 3 passes through the driven gear 43 and passes through the driven gear 43. It is screwed to the gear 43 . The rotation of the drive motor 41 drives the rotation of the drive gear 42 , which in turn drives the rotation of the driven gear 43 , and the torsional action between the driven gear 43 and the connection screw 3 is applied to the connection screw 3 . Since the angle between the substrate 1 and the movable plate 2 can be adjusted by converting it into action, the drive motor 41 does not need to be installed at the hinge connection portion between the substrate 1 and the movable plate 2, and the arrangement is rational. This solves the problem that the variable angle range between the substrate 1 and the movable plate 2 becomes large and the projection angle is limited.

Since the movable plate 2 is connected to the shield plate 5 in contact with the drive gear 42 and the driven gear 43, the shield plate 5 supports and protects the drive gear 42 and the driven gear 43. .

The axis of the driven gear 43 and the axis of the connection screw 3 are aligned.

A hinge connecting seat 6 is provided on the base plate 1. The hinge connecting seat 6 is provided with an elongated hole 7. A lower end of the connection screw 3 is inserted into the elongated hole 7. A contacting hinge connecting rod 8 is provided. When the movable plate 2 rotates along the substrate 1 and the connection screw 3 moves along the axial direction of the driven gear 43, the lower end of the connection screw 3 must rotate and slide on the substrate 1, At this time, the hinge connecting rod 8 rotates along the hinge connecting seat 6 and slides along the oblong hole 7, thereby releasing the limited degree of freedom of the connecting screw 3.

By connecting the substrate 1 and the movable plate 2 through two central rotation shafts 9, the connection between the substrate 1 and the movable plate 2 is facilitated, and the smooth rotation of the movable plate 2 is guaranteed.

Principle of Operation First, the substrate 1 is attached to the ceiling light, and the projector is attached to the movable plate 2 . Next, when it is necessary to adjust the projection angle of the projector, the rotation of the drive motor 41 drives the rotation of the drive gear 42 , which in turn drives the rotation of the driven gear 43 and is connected to the driven gear 43 . The angle between the substrate 1 and the movable plate 2 is adjusted by converting the twisting action between the screws 3 into a tensile action on the connecting screw 3 . In this case, it is necessary to release the degree of freedom of rotation and sliding of the end of the connection screw 3 that is connected to the substrate 1 . The hinge connecting rod 8 is then rotated along the hinge connecting seat 6 and slid along the oblong hole 7 to release the restricted degree of freedom of the connecting screw 3 . Finally, the rotation of the drive motor 41 is stopped, and the adjustment of the projection angle of the projector is finished.

What has been described above is only the preferred specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions and modifications made within the scope of the present invention based on the technical solution and idea of the invention shall fall within the protection scope of the present invention.

REFERENCE SIGNS LIST 1 substrate 2 movable plate 3 connection screw 4 drive mechanism 41 drive motor 42 drive gear 43 driven gear 5 shield plate 6 hinge connection seat 7 oval hole 8 hinge connection rod 9 center rotation axis.

Claims (6)

A rotating device capable of adjusting the projection angle over a wide range, comprising a substrate (1), a movable plate (2), a connecting screw (3) and a drive mechanism (4), wherein the movable plate (2) ) is hinge-connected to the substrate (1), the drive mechanism (4) is connected to the movable plate (2), the lower end of the connection screw (3) is connected to the substrate (1), the connection screw A rotating device capable of adjusting a projection angle in a wide range, characterized in that (3) passes through the driving mechanism (4) and is screwed to the driving mechanism (4). The drive mechanism (4) includes a drive motor (41), a drive gear (42), and a driven gear (43), and both the drive gear (42) and the driven gear (43) The driving gear (42) meshes with the driven gear (43), the driving motor (41) is fixedly attached to the movable plate (2), and the driving motor (41) is hingedly connected to the movable plate (2). 41) is connected to said driving gear (42), said connecting screw (3) passes through said driven gear (43) and is screwed into said driven gear (43). 2. Rotating device according to 1, which can adjust the projection angle over a wide range. 3. The projection angle according to claim 2, characterized in that the movable plate (2) is connected to a shield plate (5) that abuts on the driving gear (42) and the driven gear (43). Widely adjustable rotator. The rotating device with a wide range of projection angle adjustment according to claim 2, characterized in that the axis of the driven gear (43) and the axis of the connecting screw (3) coincide. A hinge connection seat (6) is provided on the base plate (6), and an oblong hole (7) is drilled in the hinge connection seat (6), and the lower end of the connection screw (3) is Rotating device with a wide range of adjustable projection angle according to claim 1, characterized in that it is provided with a hinge connecting rod (8) inserted in said oblong hole (7). Widely adjustable projection angle according to claim 1, characterized in that the substrate (1) and the movable plate (2) are connected via two central rotation shafts (9). rotary device.

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