CN206338557U - Multimedia projector support - Google Patents

Abstract

The multimedia projector bracket provided by the utility model includes a support plate and a rotating plate; the bottom surface of the rotating plate is provided with a ring gear segment, the supporting plate is provided with a gear, and the rotating plate is connected with the supporting plate through a rotating shaft , the ring gear segment is meshed with the gear, the connection position between the rotating shaft and the rotating plate is that the center of the ring gear segment is at the corresponding position of the rotating plate, and the rotation of the gear drives the ring gear segment to move, so that The rotating plate rotates along the arc direction of the ring gear segment to adjust the projection horizontal angle of the projector fixed on the rotating plate. The projector is fixed on the rotating plate. When the gear rotates, it drives the ring gear segment to rotate, thereby causing the rotating plate to rotate, and the projector fixed on the rotating plate also rotates to realize adjustment of the projection horizontal angle of the projector.

Description

Multimedia Projector Stand

technical field

The utility model relates to the technical field of multimedia equipment, in particular to a bracket for a multimedia projector.

Background technique

With the increasing popularity of digital products, projectors have entered people's daily work and life as an indispensable multimedia medium. Nowadays, multimedia teaching needs to use projectors; many families will also equip projectors at home in order to achieve the effect of home theater. A projector stand is required when using a projector. Install the projector on the projector bracket to ensure that the projection position can be accurately projected on the screen. The angle of the current projector bracket is not adjustable. It is necessary to adjust the projection angle by adjusting the projection lens of the projector itself. The adjustment angle is relatively small, and frequent adjustment of the projection angle will easily damage the lens and affect the service life of the projector. In order to solve the above problems, those skilled in the art provide a plurality of card slots on the bracket. The projector is placed on the support plate, and the angle of the projector lens is adjusted by adjusting the positions where the brackets at the bottom of the support plate are snapped into different slots. However, in this technical solution, the angle of the projector lens can only be adjusted vertically up and down, and cannot be adjusted horizontally. If there is an angle mismatch between the installed projector and the screen, the position of the projector needs to be readjusted.

Utility model content

The purpose of the utility model is to provide a bracket for a multimedia projector, which can adjust the left and right angles of the projector through the rotation of the rotating plate.

In order to achieve the above object, the utility model provides the following technical solutions:

The multimedia projector bracket includes a supporting plate and a rotating plate; the bottom surface of the rotating plate is provided with a ring gear segment, and the supporting plate is provided with a gear, and the rotating plate is connected with the supporting plate through a rotating shaft, so that the teeth The ring segment meshes with the gear, the connection position between the rotating shaft and the rotating plate is that the center of the ring gear segment is at the corresponding position of the rotating plate, and the rotation of the gear drives the ring gear segment to move, so that the rotating plate moves along the gear The arc direction of the circle segment is rotated to adjust the projection horizontal angle of the projector fixed on the rotating plate. The projector is fixed on the rotating plate. When the gear rotates, it drives the ring gear segment to rotate, thereby causing the rotating plate to rotate, and the projector fixed on the rotating plate also rotates to realize adjustment of the projection horizontal angle of the projector.

In a preferred embodiment, baffles are provided on both ends of the gear, and the baffles cover the end surfaces of the ring gear segment, and the ring gear segment is located between the two baffles. The ring gear segment is fixed between the two baffles to ensure stable meshing between the ring gear segment and the gear in a vertical position.

In a preferred embodiment, the number of the ring gear segments is three or more, the centers of all the ring gear segments overlap, and each ring gear segment meshes with a gear respectively.

In a preferred embodiment, the rotating plate is provided with an arc-shaped hole, and a sliding rod is installed in the arc-shaped hole, and one end of the sliding rod is fixed on the support plate. When the rotating plate rotates, The sliding rod slides in the arc hole.

In a preferred embodiment, a lifting device is further included, and the lifting end of the lifting device is connected with the support plate to adjust the height of the support plate.

In a preferred embodiment, the lifting device includes a rotating shaft and a sling, one end of the sling is fixed on the support plate, and the other end is wound on the rotating shaft.

In a preferred embodiment, the number of the slings is two, and one sling is respectively connected to one side of the support plate and one end of the rotating shaft; the other sling is respectively connected to the other side of the support plate and the other end of the rotating shaft. one end.

In a preferred embodiment, the number of the lifting devices is two, and the sling of one lifting device is connected to both sides of the projection end of the support plate for adjusting the height of the projection end of the support plate; The sling of the device is connected to both sides of the opposite end of the projection of the support plate, and is used to adjust the height of the opposite end of the projection of the support plate, so as to adjust the vertical direction of projection.

The beneficial effects of the utility model are:

When the gear rotates, it drives the ring gear segment to rotate, thereby causing the rotating plate to rotate, and the projector fixed on the rotating plate also rotates accordingly to realize the adjustment of the shadow level angle of the projector.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is an exploded view of the connection of a support plate and a rotating plate in an embodiment;

Figure 2 is an exploded view of the connection between the support plate and the rotating plate in another embodiment;

Fig. 3 is a sectional view of the internal connection of the support plate and the rotating plate;

Figure 4 is a schematic diagram of the connection between the ring gear segment and the support plate;

Fig. 5 is an exploded view of the connection between the support plate and the rotating plate in another embodiment;

FIG. 6 is a schematic structural diagram of a bracket on which a projector is placed.

detailed description

The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to FIGS. 1-3 , this embodiment provides a bracket for a multimedia projector, including a support plate 1 and a rotating plate 2 . The top surface of the rotating board 2 is used to place the projector. The ring gear segment 21 is welded to the bottom surface of the rotating plate 2 . The support plate 1 is square, and the rotating plate 2 is also square. The length, width and thickness of the support plate 1 are the same as those of the rotating plate 2 . The center of the ring gear segment 21 defines a through hole at the corresponding position of the rotating plate 2 . The support plate 1 is welded with a bearing 11 . The rotating shaft of the gear 13 is fitted in the inner ring of the bearing 11 . The output shaft of the stepping motor 3 is connected with the rotating shaft of the gear 13 . The supporting plate 1 is welded to the rotating shaft 10 . The position of the rotating shaft 10 on the support plate 1 corresponds to the position of the through hole of the rotating plate 2 . The rotating shaft 10 passes through the through hole, connects the support plate 1 and the rotating plate 2 , and at the same time makes the gear 13 mesh with the ring gear segment 21 . When the motor 3 starts, the gear 13 drives the ring gear segment 21 to move, so that the ring gear segment 21 drives the rotating plate 2 to rotate along the arc direction of the ring gear segment 21 . The projector is fixed on the upper surface of the rotating plate 2, and when the rotating plate 2 rotates, the projector is driven to rotate, thereby adjusting the projection horizontal angle of the projector.

In one embodiment, as shown in FIG. 3 , the two end surfaces of the gear 13 are respectively fixed with baffles 131 and 132 by screws. When the gear 13 meshes with the ring gear segment 21 , the two baffles 131 , 132 cover the end face of the ring gear segment 21 , so that the ring gear segment and the gear are engaged in an accurate and corresponding vertical position.

As shown in FIG. 4 , preferably, the number of ring gear segments 21 is three. Three ring gear segments 21 are evenly distributed around the center of the rotating plate 2 . Each ring gear segment 21 meshes with a gear 13 respectively, so as to ensure that the rotating plate 2 has three supporting points when rotating, and the rotating process is stable.

In order to further improve the stability of the rotation, as shown in FIG. 5 , the rotation plate 2 is provided with an arc-shaped hole 22 . The center of the arc-shaped hole 22 overlaps the through hole of the rotating plate 2 , and the radius of the arc-shaped hole 22 is longer than that of the ring gear segment 21 , so that the arc-shaped hole 22 is located outside the ring gear segment 21 . The top surface of the support plate 1 is welded with a slide bar 14 , and the upper end of the slide bar 14 is a slide block 141 . The sliding rod 14 penetrates into the arc-shaped hole 22 , so that the sliding block 141 is installed in the sliding groove in the arc-shaped hole 22 . When the gear 13 drives the ring gear segment 21 to rotate, the sliding rod 14 slides in the arc-shaped hole 22 at the same time, and the weight of the rotating plate 2 is supported by the sliding rod 14 to improve the stability of rotation.

In order to adjust the height of the projector conveniently, in one embodiment, as shown in FIG. 6 , a lifting device 4 is also included. The quantity of lifting device 4 is two. The lifting device 4 includes a rotating shaft 41, a suspension rope 42 and a lifting motor (not shown). The output end of the driving device of the lifting motor is connected with the rotating shaft 41 . Lifting motor and rotating shaft 41 are fixed on the suspended ceiling. In this embodiment, the length and width of the support plate 1 are 5 cm longer than the length and width of the rotating plate 2 . Two suspension ropes 42 are tied to the two ends of the rotating shaft 41 of a lifting device 4 respectively. The other ends of the two hanging ropes 42 are respectively fixed on the two corners of the projection end of the support plate 1 . The two ends of the rotating shaft 41 of another lifting device 4 are tied with two suspension ropes 42 respectively. The other ends of the two hanging ropes 42 are respectively fixed on the two corners of the projected opposite ends of the support plate 1 . If the height of the projector needs to be adjusted, the lifting motors of the two lifting devices are controlled to rotate at the same time, so that the suspension rope 42 is wound on the rotating shaft 41, and the position of the support plate 1 is raised, thereby raising the position of the projector on the upper surface of the support plate. Alternatively, control the lifting motor to rotate in the opposite direction, reduce the length of the suspension rope 42 wrapped around the rotating shaft 41 , and lower the position of the support plate 1 . It is also possible to adjust the vertical projection angle of the projector by separately controlling the rotation of the two lifting motors to tilt the support plate 1 at a certain angle.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (8)

1. multimedia projector support, including supporting plate, it is characterised in that：Also include rotor plate；The bottom surface of the rotor plate is set Put and gear is set in gear ring section, the supporting plate, the rotor plate is connected by rotating shaft with the supporting plate, make the gear ring section Engaged with the gear, the link position of the rotating shaft and the rotor plate for gear ring section the center of circle in the corresponding of the rotor plate Position, the pinion rotation drives gear ring section motion, rotates arcuate directions of the rotor plate along gear ring section, adjustment, which is fixed on, to be turned The projected horizontal angle of the projecting apparatus of dynamic plate.

2. multimedia projector support according to claim 1, it is characterised in that the both ends of the surface of the gear set gear Plate, the baffle plate is covered on the end face of the gear ring section, and the gear ring section is located between two baffle plates.

3. multimedia projector support according to claim 1 or 2, it is characterised in that the quantity of the gear ring section is three Individual or more, the center of circle of all gear ring sections is overlapping, and each gear ring section is engaged with a gear respectively.

4. multimedia projector support according to claim 3, it is characterised in that the rotor plate opens up arcuate socket, institute Assembling sliding bar in arcuate socket is stated, one end of the sliding bar is fixed in the supporting plate, when the rotor plate is rotated, institute Sliding bar is stated to slide in the arcuate socket.

5. multimedia projector support according to claim 4, it is characterised in that also including lowering or hoisting gear, the lifting The lift side of device is connected with the supporting plate, adjusts the height of the supporting plate.

6. multimedia projector support according to claim 5, it is characterised in that the lowering or hoisting gear includes rotating shaft and hung Rope, one end of the lifting rope is fixed in the supporting plate, and the other end is wrapped in the rotating shaft.

7. multimedia projector support according to claim 6, it is characterised in that the quantity of the lifting rope is two, one Lifting rope connects the side of supporting plate, one end of rotating shaft respectively；Another lifting rope connect respectively the opposite side of supporting plate, rotating shaft it is another End.

8. multimedia projector support according to claim 7, it is characterised in that the quantity of the lowering or hoisting gear is two Individual, the lifting rope of a lowering or hoisting gear is connected with the both sides at the projection end of the supporting plate, the height at the projection end for adjusting supporting plate Degree；The lifting rope of another lowering or hoisting gear is connected with the both sides of the projection opposite end of the supporting plate, the projection for adjusting supporting plate The height of opposite end, realizes adjustment projection vertical direction.