CN117739246A - Suspension type mounting bracket for projector - Google Patents

Abstract

The invention discloses a projector suspension type mounting bracket which comprises a track and a driving mechanism arranged on the track, wherein a projector is arranged at the lower end of the driving mechanism, and the driving mechanism drives the projector to move along the track. According to the invention, the projector is driven to move on the track through the driving mechanism, so that the projection path of the projector is always vertical to the curtain, and therefore, the movement of a projection picture on a wide curtain can be realized by using a single projector under the condition of ensuring the definition of the projection picture.

Description

Suspension type mounting bracket for projector

Technical Field

The invention relates to the field of projector static horizontal adjusting brackets, in particular to a projector suspension type mounting bracket.

Background

The formation mode of the picture display of the scenes such as the large-scale multimedia teaching room, the conference room and the like is a spliced LED display screen or a laser projection mode, the definition of the spliced screen is very high, but the input cost is much higher than the laser projection cost, and the maintenance cost and the power consumption are also relatively higher. The laser projection mode has certain cost advantages in the aspects of cost investment, installation and maintenance and the like, is more commonly applied, and is provided with a wider projection curtain in scenes such as a large multimedia performance hall, a conference room and the like.

Disclosure of Invention

The invention aims to provide a projector suspension type mounting bracket, which drives a projector to move on a track through a driving mechanism so as to ensure that the projection path of the projector is always vertical to a curtain, so that the movement of a projection picture on a wide curtain can be realized by using a single projector under the condition of ensuring the definition of the projection picture.

The invention solves the problems by adopting the following technical scheme:

the utility model provides a projector suspension type installing support, includes track and the actuating mechanism of setting on the track, actuating mechanism's lower extreme be provided with the projector, actuating mechanism drive projector moves along the track, track and the equidistant parallel arrangement of screen of projector.

In the above technical scheme, preferably, the projector is mounted on the driving mechanism through the connecting piece, the connecting piece comprises a static horizontal adjusting bracket, a connecting rod and a dynamic horizontal adjusting bracket, the upper end and the lower end of the static horizontal adjusting bracket are respectively fixedly connected with the connecting rod and the dynamic horizontal adjusting bracket, the projector is fixed at the lower end of the dynamic horizontal adjusting bracket and adjusts the angle of the projector through the dynamic horizontal adjusting bracket, and the connecting rod is arranged between the static horizontal adjusting bracket and the driving mechanism and is of a telescopic structure.

In the above technical scheme, preferably, the static horizontal adjusting bracket comprises a fixing plate, wherein a ball pin is fixed at the upper end of the fixing plate and hinged in a ball sleeve, a fastening handle is arranged on the ball sleeve, and the upper end of the ball sleeve is fixedly connected with the lower end of the connecting rod.

In the above technical scheme, preferably, the driving mechanism comprises a first shell and a roller, the roller is provided with a plurality of rollers and is rotatably arranged on the first shell, the roller is in contact with the upper end face of the rail, and the roller is driven to rotate by a motor arranged in the first shell.

In the above technical scheme, preferably, a transmission mechanism for driving the projector to rotate is arranged between the projector and the track, and the driving mechanism is in transmission connection with the transmission mechanism.

In the above technical scheme, preferably, the transmission mechanism includes a first gear and a rack meshed with each other, the first gear is rotatably disposed at the lower end of the driving mechanism, the first gear is fixed with the upper end of the connecting rod, and the rack is fixed on the track.

In the above technical solution, preferably, a dimming mechanism is fixed on the static horizontal adjustment bracket, and the dimming mechanism is aligned with a projection lens of the projector.

In the above technical scheme, preferably, the dimming mechanism includes a second housing, a first lens is fixed in the second housing, the first lens is disposed at a front side of the projection lens, a two-sided mirror is disposed at the front side of the first lens, a rear end of the mirror is hinged in the second housing, and three second lenses are fixed on the second housing at the front side of the mirror.

In the above technical scheme, preferably, a hinge rod is hinged between the front ends of the two reflectors, a second gear is fixed at the rear end of any one reflector, a third gear is connected with the second gear in a meshed manner, and the third gear is driven to rotate by a motor arranged in the second shell.

In the above technical solution, preferably, the track includes two oblique straight sections which are bilaterally symmetrical and a straight section which is located at a middle position, and the oblique straight sections and the straight section are connected through a curved section.

Compared with the prior art, the invention has the following advantages and effects:

the invention drives the projector to move along the guide rail through the driving mechanism, so that the projection picture can be transferred to one side of the curtain along with the projector, and the track can be made into a shape which is always parallel to the curtain and equidistant from the curtain, so that the distance between the projector and the curtain is always unchanged and the projection direction is always perpendicular to the curtain in the process of moving along the track, the size of the projection picture is unchanged and the projection picture is kept clear when the projection picture moves on the curtain, and the invention can realize the movement of the projection picture on the curtain through a single projector and ensure the definition of the projection picture.

Drawings

Fig. 1 is a schematic top view of an embodiment of a projector mount bracket according to the present invention.

Fig. 2 is a schematic structural view of a suspension type mounting bracket for a projector according to an embodiment of the present invention.

Fig. 3 is a schematic view of the structure of the static leveling bracket in fig. 2.

Fig. 4 is a cross-sectional view of the drive mechanism of fig. 2.

Fig. 5 is a schematic view of the transmission mechanism located at the bottom end of the driving mechanism in fig. 2.

Fig. 6 is a schematic structural view of a dimming mechanism of a suspension type mounting bracket for a projector according to an embodiment of the present invention in an initial state.

Fig. 7 is a schematic view of the structure of the dimmer mechanism of fig. 6, in which the reflecting mirror is in a deflected state.

The track 1, the inclined straight section 11, the flat straight section 12, the curved section 13, the driving mechanism 2, the first housing 21, the roller 22, the projector 3, the projection lens 31, the transmission mechanism 4, the first gear 41, the rack 42, the connecting piece 5, the static leveling bracket 51, the connecting rod 52, the fixing plate 53, the ball pin 54, the ball sleeve 55, the fastening handle 56, the dynamic leveling bracket 57, the dimming mechanism 6, the second housing 61, the first lens 62, the reflecting mirror 63, the second lens 64, the hinge rod 65, the second gear 66, the third gear 67, and the curtain 7.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.

Example 1

Referring to fig. 1-7, the suspension type mounting bracket for the projector of the present embodiment includes a track 1 and a driving mechanism 2 disposed on the track 1, wherein a projector 3 is mounted at the lower end of the driving mechanism 2, and the driving mechanism 2 drives the projector 3 to move along the track 1.

When the device is used, the track 1 is arranged on an indoor ceiling, when the projection position of the projector 3 on the curtain 7 needs to be switched, the projector 3 is driven to move along the guide rail 1 through the driving mechanism 3, so that a projection picture can be transferred to one side of the curtain 7 along with the projector 3, and the track 1 can be made into a shape which is always parallel to the curtain 7 and equidistant from the curtain 7, so that the distance between the projector 3 and the curtain 7 is always unchanged in the process of moving along the track 1, the projection direction is always perpendicular to the curtain 7, the size of the projection picture is unchanged and the projection picture is kept clear when the projection picture moves on the curtain 7, and the movement of the projection picture on the curtain 7 can be realized through a single projector 3, and meanwhile, the definition of the projection picture is ensured.

In the application process, a plurality of groups of image acquisition sensors can be arranged on the track, image information on the front side of projection is acquired in real time through the image acquisition sensors, whether an obstacle exists in a projection path is acquired through an image recognition technology, the space coordinates of the obstacle are determined, the projection path space separated from the coordinates of the obstacle is obtained according to the coordinates of the obstacle, the projection position coordinates of the projector on the track 1 are generated, the movement instruction parameters of a driving mechanism are obtained through data processing of the position coordinates, and therefore the projector is moved, and the projection information under the non-interference condition is displayed in real time; the embodiment specifically provides a step of implementing the above manner:

s1: establishing a space coordinate system of a complete projection path of the projector on the track in a database;

s2: a plurality of groups of image acquisition sensors are uniformly arranged on the track so as to cover the whole projection area, and each sensor can capture the image information of the front side, so that obstacle detection and space coordinate acquisition are facilitated;

s3, an image acquisition sensor acquires image information of the front side of projection in real time; analyzing whether an obstacle exists in the image through image processing technology such as edge detection, deep learning or pattern recognition;

s4, identifying an obstacle in the image by using an image identification technology and determining the shape and the size of the obstacle and the space coordinates in the space coordinate system;

s5: calculating an unobstructed projection path according to the space coordinates of the obstacle and generating the position coordinates of the projector on the orbit under the projection path;

s6, converting the position coordinates into movement instruction parameters of a driving mechanism, and transmitting the parameters to a projector driving device through a control system;

further, when the presenter moves back and forth in a certain area at a specific time threshold, the projection path projects directly outside the area, so that the problem that the image is poor in perception due to frequent back and forth movement caused by frequent movement of the presenter in a small range is prevented.

In this embodiment, referring specifically to fig. 2, the projector 3 is mounted on the driving mechanism 2 through the connecting piece 5, the connecting piece 5 includes a static level adjusting bracket 51, a connecting rod 52 and a dynamic level adjusting bracket 57, the upper and lower ends of the static level adjusting bracket 51 are respectively fixedly connected with the connecting rod 52 and the dynamic level adjusting bracket 57, the projector 3 is fixed at the lower end of the dynamic level adjusting bracket 57 and adjusts the angle of the projector 3 through the dynamic level adjusting bracket 57, the connecting rod 52 is disposed between the static level adjusting bracket 51 and the driving mechanism 2, and the connecting rod 52 is of a telescopic structure, so as to facilitate the preset adjustment of the projection height.

When the projector 3 is specifically mounted on the connecting piece 5, firstly, the angle of the dynamic horizontal adjusting bracket 57 is adjusted through the static horizontal adjusting bracket 51, so that the upper plane of the dynamic horizontal adjusting bracket 57 is in a horizontal state, in the process, the dynamic horizontal adjusting bracket is in a zero position, the initial upper and lower platforms are kept horizontal, so that the position of the projector in the initial position is in a horizontal state, the horizontal error in the track mounting process is eliminated, the static horizontal adjusting bracket is used for adjusting the horizontal error of the track in the mounting process, the projector 3 is fixed on the lower plane of the dynamic horizontal adjusting bracket 57, the height of the projector 3 is adjusted through the telescopic structure of the connecting rod 52, the position of a projection picture of the projector 3 is matched with the position of the curtain 7, and finally, the proper projection direction of the projector 3 is enabled through the adjusting action of the dynamic horizontal adjusting bracket 57, namely, the projection picture is clear in the initial state, so that the mounting position of the projector 3 is matched with the position of the curtain 7 through the adjusting action of the static horizontal adjusting bracket 51, the connecting rod 52 and the dynamic horizontal adjusting bracket 57, and therefore the requirements of different mounting sites on the mounting positions of the projector 3 and the curtain 7 are met.

In this embodiment, static level adjustment support be used for realizing the adjustment of track installation horizontal error, and dynamic level adjustment support for the adjustment of dynamic projecting apparatus incident angle, combine the flow of obstacle avoidance as above-mentioned, when the barrier of detecting at the front side of projection route, can realize avoiding projection route in the scope of barrier through the projection angle of dynamic level adjustment support adjustment projecting apparatus, then can realize accessible projection through the adjustment of dynamic level adjustment support adjustment projecting apparatus incident angle in adjustable scope, and need not to move actuating mechanism again and realize projection position's adjustment, the adjustment of dynamic level adjustment support adoption servo motor driven six degree of freedom platform realize incident angle, because the adjustment of incident angle can cause the distortion of projection, then need set up the change of six degree of freedom platform and the association of projecting apparatus distortion correction parameter, consequently, set up by the gyro sensor on the moving platform, after the moving platform changes, through obtaining gyro sensor's horizontal variation parameter and distortion correction parameter match, and carry the control command of adjustment parameter to the projecting apparatus through the serial ports, realize the automatic adjustment of projecting apparatus, simultaneously, can guarantee the stability of moving platform in the course of moving, can also move in the motion of the platform, can be guaranteed, thereby the stability of the picture is rectified in the initial motion is realized.

Referring specifically to fig. 3, the static horizontal adjusting bracket 51 shown includes a fixing plate 53, a ball pin 54 is fixed at the upper end of the fixing plate 53, the ball pin 54 is hinged in a ball sleeve 55, a fastening handle 56 is provided on the ball sleeve 55, and the upper end of the ball sleeve 55 is fixedly connected with the lower end of the connecting rod 52.

Referring to fig. 2, the connecting rod 52 is an electric push rod, and the height of the projector 3 is adjusted by the electric push rod, so that the structure is simpler, and the space is saved and the replacement is convenient.

Referring to fig. 4, the driving mechanism 2 includes a first housing 21 and a roller 22, the roller 22 is provided with a plurality of rollers and is rotatably disposed on the first housing 21, the roller 22 contacts with the upper end surface of the track 1, and the roller 22 is driven to rotate by a motor built in the first housing 21.

When the position of the projector 3 on the track 1 needs to be controlled, the whole of the driving mechanism 2 and the projector 3 is moved on the track 1 by the rotation of the roller 22, so that the movement of the projection screen on the curtain 7 is controlled.

As shown in fig. 1, the curtain 7 is divided into three curtains 7, wherein the curtain 7 located at the middle position is larger, the other two smaller curtains 7 are symmetrically disposed on the left and right sides (three-sided form as shown in fig. 1) of the curtain 7 at the middle position, and the curtains 7 on both sides are placed at a certain angle with the curtain 7 in the middle, and the curtains 7 on both sides are oriented to the middle position of the auditorium, so as to provide better visual effect for the spectators.

Since the three projectors 3 are arranged in the three-sided layout in different directions, the projector 3 needs to be rotated when the projection screen is switched between the three curtains 7, and since the installation position of the projector 3 is different from the distance between the three curtains 7, if the projector 3 is directly rotated, the projection screen and the curtain 7 are not matched in size, and therefore, the distance between the projector 3 and the curtain 7 needs to be adjusted while the direction of the projector 3 is adjusted.

The track and the screen of the projector are equidistantly and parallelly arranged, so that the distance between the curtains 7 is unchanged, the projection direction is always perpendicular to the curtains 7, the size of the projection picture is unchanged and kept clear when the projection picture moves on the curtains 7,

referring to fig. 5, a transmission mechanism 4 for driving the projector 3 to rotate is arranged between the projector 3 and the track 1, and the driving mechanism 2 is in transmission connection with the transmission mechanism 4.

Firstly, the projector 3 is moved along the track 1 through the driving mechanism 2, so that the distance between the projector 3 and the curtain 7 is changed, the projector 3 is moved to a proper position, the driving mechanism 2 is operated and drives the transmission mechanism 4 to operate, so that the projector 3 is driven to rotate, and the projection direction of the projector 3 is adjusted to be perpendicular to the target curtain 7 and at a proper projection position, therefore, under the use state, the projection direction of the projector 3 can be switched through the structure, and the number of the projectors 3 required by the layout of the curtain 7 in three surfaces is reduced.

Referring to fig. 5, the transmission mechanism 4 includes a first gear 41 and a rack 42 which are engaged with each other, the first gear 41 is rotatably disposed at the lower end of the driving mechanism 2, the first gear 41 is fixed to the upper end of the connecting rod 52, and the rack 42 is fixed to the track 1.

When the whole of the driving mechanism 2 and the projector 3 moves on the track 1, the first gear 41 is driven to rotate through the engagement of the rack 42 and the first gear 41, so that the whole of the projector 3 and the connecting piece 5 fixed with the first gear 41 simultaneously rotate along with the first gear 41, the orientation of the projection lens 31 can be adjusted, and when the projector 3 moves to a target position, the projection lens 31 can rotate to a state perpendicular to the corresponding curtain 7, and the projected picture is prevented from being deformed or incomplete.

Example two

In some scenes, if the position of the projected scene needs to be rapidly switched, the position needs to be gradually moved to the corresponding projection position by adopting the structure, so that the method is suitable for adjusting the adaptation to avoid obstacles, and then the method cannot rapidly perform rapid change of the projection position in a large range, particularly when the projection curtain of fig. 1 is applied, for example, information projected to the middle part needs to be rapidly projected to the side part, so that the rapid switching of the scene is performed, and therefore, in the embodiment, a dimming mechanism is applied to directly perform rapid adjustment of a projection path at a fixed position;

referring specifically to fig. 6, a dimming mechanism 6 is fixed to the static leveling bracket 51, and the dimming mechanism 6 is aligned with the projection lens 31 of the projector 3.

In this embodiment, the dimming mechanism 6 may be used to turn the light projected by the projector 3, so as to turn the direction of the projected image, and only the driving mechanism 2 is needed to drive the projector 3 to move along the track 1, so that the projector 3 does not need to be rotated.

Referring to fig. 6, the dimming mechanism 6 includes a second housing 61, a first lens 62 is fixed in the second housing 61, the first lens 62 is disposed on the front side of the projection lens 31, a two-sided mirror 63 is disposed on the front side of the first lens 62, the rear end of the mirror 63 is hinged in the second housing 61, three second lenses 64 are fixed on the second housing 61 on the front side of the mirror 63, and each second lens 64 and the curtain 7 opposite thereto are disposed in parallel.

Since the light projected from the projector 3 is generally conical diffused light, so that a large screen can be formed on the curtain 7, the projected diffused light is first converted into parallel light having a cylindrical shape by the first lens 62, so that the reflection of the light by the reflecting mirror 63 is facilitated, and when the two reflecting mirrors 63 are at the initial positions (as shown in fig. 6), the two reflecting mirrors 63 are not on the irradiation paths of the light, and at this time, the light is directly incident on the corresponding second lens 64, and the light is restored to the diffused light by the second lens 64, so that a large projection can be formed on the curtain 7 located in the middle.

When the two mirrors 63 are rotated to the deflected position (as shown in fig. 7), one of the mirrors 63 is located on the irradiation path of the light, so that the mirror 63 can reflect the light to deflect the direction of the light, and the deflected light is restored to diffuse light after passing through the corresponding second lens 64, so that a larger projection can be formed on the curtain 7 located at the side, and when the projection needs to be switched to the curtain 7 located at the side of the other side, the two mirrors 63 are rotated, so that the aforementioned mirror 63 is moved away from the irradiation path of the light, and the other mirror 63 is rotated to the irradiation path of the light.

In this embodiment, since the projected screen reflected by the reflecting mirror 63 is reversed from left to right, when the projected screen is switched from the center screen 7 to the two screens 7, the screen input to the projector 3 needs to be reversed from left to right, and when the projected screen is switched from the two screens 7 to the center screen 7, the screen input to the projector 3 needs to be reset.

Referring to fig. 6, a hinge rod 65 is hinged between the front ends of the two mirrors 63, a second gear 66 is fixed at the rear end of any mirror 63, a third gear 67 is connected to the second gear 66 in a meshed manner, and the third gear 67 is driven to rotate by a motor installed in the second housing 61.

When one of the mirrors 63 is driven to rotate by the motor, the other mirror 63 can be driven to rotate by the hinge rod 65, so that the two mirrors 63 can rotate simultaneously, the number of motors for driving the mirrors 63 to rotate is reduced, and the motor driving mechanism is simple in structure and convenient for controlling the two mirrors 63 simultaneously.

The foregoing description of the invention is merely exemplary of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A projector suspension mounting bracket, characterized in that: the device comprises a track and a driving mechanism arranged on the track, wherein a projector is arranged at the lower end of the driving mechanism, the driving mechanism drives the projector to move along the track, and the track and a screen of the projector are arranged in parallel at equal intervals.

2. The projector mount as claimed in claim 1, wherein: the projector is installed on the driving mechanism through the connecting piece, the connecting piece comprises a static horizontal adjusting bracket, a connecting rod and a dynamic horizontal adjusting bracket, the upper end and the lower end of the static horizontal adjusting bracket are respectively fixedly connected with the connecting rod and the dynamic horizontal adjusting bracket, the projector is fixed at the lower end of the dynamic horizontal adjusting bracket and adjusts the angle of the projector through the dynamic horizontal adjusting bracket, and the connecting rod is arranged between the static horizontal adjusting bracket and the driving mechanism and is of a telescopic structure.

3. The projector mount as claimed in claim 2, wherein: the static horizontal adjusting support comprises a fixing plate, wherein a ball pin is fixed at the upper end of the fixing plate and hinged in a ball sleeve, a fastening handle is arranged on the ball sleeve, and the upper end of the ball sleeve is fixedly connected with the lower end of the connecting rod.

4. The projector mount as claimed in claim 1, wherein: the driving mechanism comprises a first shell and rollers, the rollers are provided with a plurality of rollers and are rotatably arranged on the first shell, the rollers are in contact with the upper end face of the rail, and the rollers are driven to rotate through motors arranged in the first shell.

5. The projector mount as claimed in claim 1, wherein: the projector is characterized in that a transmission mechanism for driving the projector to rotate is arranged between the projector and the track, and the driving mechanism is in transmission connection with the transmission mechanism.

6. The projector mount as claimed in claim 1, wherein: the transmission mechanism comprises a first gear and a rack which are meshed with each other, the first gear is rotatably arranged at the lower end of the driving mechanism, the first gear is fixed with the upper end of the connecting rod, and the rack is fixed on the track.

7. A projector suspension mount as claimed in claim 3, wherein: and a dimming mechanism is fixed on the static horizontal adjusting bracket and is aligned with a projection lens of the projector.

8. The projector mount bracket of claim 7, wherein: the dimming mechanism comprises a second shell, a first lens is fixed in the second shell, the first lens is arranged on the front side of the projection lens, a two-sided reflecting mirror is arranged on the front side of the first lens, the rear end of the reflecting mirror is hinged in the second shell, and three second lenses are fixed on the second shell on the front side of the reflecting mirror.

9. The projector mount as claimed in claim 8, wherein: the front ends of the two reflectors are hinged with a hinge rod, the rear end of any one reflector is fixed with a second gear, the second gear is connected with a third gear in a meshed manner, and the third gear is driven to rotate by a motor arranged in a second shell.

10. The projector mount as claimed in claim 1, wherein: the track comprises two oblique straight sections which are bilaterally symmetrical and a straight section which is positioned at the middle position, and the oblique straight sections are connected with the straight section through a bending section.