CN114593315A

CN114593315A - Projection equipment adjusting device

Info

Publication number: CN114593315A
Application number: CN202011415438.8A
Authority: CN
Inventors: 王霖; 赵振宇; 唐泽达; 贾坤; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2022-06-07
Also published as: WO2022116882A1

Abstract

The invention discloses a projection equipment adjusting device. This projection equipment adjusting device includes chassis and at least three telescopic machanism, and wherein, telescopic machanism includes: a drive assembly for providing a driving force; the universal connecting piece is used for connecting with the projection equipment; the scissor rack comprises a first hinge point, a second hinge point and a third hinge point, wherein the scissor rack is connected with the chassis through the first hinge point, connected with the driving assembly through the second hinge point and connected with the universal connecting piece through the third hinge point, and driven by the driving assembly to move up and down; the at least three telescopic mechanisms are arranged on the chassis in a non-collinear manner and can independently lift, and the at least three telescopic mechanisms are mutually matched to adjust the height of the projection equipment along the first direction, the angle of the projection equipment around the second direction and the angle of the projection equipment around the third direction. The projection equipment adjusting device can adjust the position of projection equipment in multiple directions and multiple angles and has the advantage of larger adjusting range.

Description

Projection equipment adjusting device

Technical Field

The invention relates to the technical field of projection equipment, in particular to a projection equipment adjusting device.

Background

The relative position relationship between the projector, especially the ultra-short-focus projection device, and the projection surface (wall surface, curtain, etc.) directly determines the viewing experience of the viewer on the projection picture. Generally, the projector is manually adjusted repeatedly after being placed in the position to reach the most suitable position, which is time-consuming and labor-consuming, and is often difficult to adjust to the most suitable position. When the projection is carried out on the screen, the picture is straightened, the size of the projection picture is matched with that of the screen, and the adjustment is more difficult.

In addition, for general applications, where the projector is often out of a fixed position (e.g., at home) or may be moved (e.g., in a meeting room), readjustment of the projector after the projector position is changed is a problem.

The position and the angle of projector can be adjusted to projector adjusting device to reach the most suitable result of use, but the problem that exists is, when adjusting device size is less, the control range also can be corresponding less, and when adjusting device size is great, the control range is great, but also can cause whole projection equipment's height great, need occupy more spaces, has brought the inconvenience for the user.

Disclosure of Invention

The invention mainly solves the technical problem of providing a projection equipment adjusting device which has smaller overall height and larger adjusting range when being contracted, and solves the problems of larger height and smaller adjusting range of the existing adjusting device.

In order to solve the technical problems, the invention adopts a technical scheme that: a projection device adjusting apparatus is provided. This projection equipment adjusting device includes chassis and at least three telescopic machanism, wherein, telescopic machanism includes: a drive assembly for providing a driving force; the universal connecting piece is used for connecting with the projection equipment; the scissor rack comprises a first hinge point, a second hinge point and a third hinge point, wherein the scissor rack is connected with the chassis through the first hinge point, connected with the driving assembly through the second hinge point, and connected with the universal connecting piece through the third hinge point, and driven by the driving assembly to perform lifting motion;

the at least three telescopic mechanisms are arranged on the chassis in a non-collinear manner and can be lifted independently, and the at least three telescopic mechanisms are mutually matched to adjust the height of the projection equipment along the first direction, the angle around the second direction and the angle around the third direction;

the first direction is perpendicular to the chassis, the second direction and the third direction are parallel to the chassis, and the second direction and the third direction are perpendicular to each other.

In some embodiments, the universal connection is articulated to the third articulation point or to the projection device by an articulation.

In some embodiments, a first connecting shaft and a second connecting shaft are connected to two ends of the hinge member, the first connecting shaft and the second connecting shaft are hinged to each other through the hinge member, the first connecting shaft is fixedly connected to the third hinge point, and the second connecting shaft is fixedly connected to the universal connecting piece;

or the first connecting shaft is fixedly connected with the universal connecting piece, and the second connecting shaft is fixedly connected with the projection equipment.

In some embodiments, the hinge is a universal joint or a ball joint.

In some embodiments, the universal connection is articulated to the third articulation point by an articulation;

the universal connecting piece comprises a guide rod and clamping heads positioned at two ends of the guide rod, and the second connecting shaft is connected with the guide rod; an elastic part is arranged at the joint of the guide rod and the chucks, and the elasticity of the elastic part faces to the direction of clamping the two chucks;

or the universal connecting piece comprises a connecting seat and a supporting flat plate; one end of the connecting seat is connected with the second connecting shaft, and the other end of the connecting seat is connected with the supporting flat plate.

In some embodiments, the universal joint comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is vertically connected with the end of the second connecting rod, the other end of the first connecting rod is fixedly connected with the second scissor rack, and the second connecting rod is horizontally arranged.

In some embodiments, the telescopic mechanism further includes a sliding slot and a positioning member, the sliding slot is fixed on the scissor rack, and the positioning member is connected to the third hinge point and passes through the sliding slot;

when the scissor rack stretches, the positioning piece slides along the sliding groove.

In some embodiments, the drive assembly includes a first motor, a first gear assembly, a screw, and a nut;

the first motor drives the screw to rotate through the first gear assembly;

the nut is in threaded connection with the screw rod and is fixedly connected with the third hinge point, and the nut drives the scissor rack to stretch when moving on the screw rod.

In some embodiments, the telescoping mechanism further comprises a support and a support frame;

the bottom of the support is fixed on the chassis, the first motor, the first gear assembly and the support frame are arranged on the support, and the first hinge point is fixedly connected with one side of the support;

the screw rod is fixed on the support frame along the first direction.

In some embodiments, the projection device adjustment apparatus further includes a first adjustment assembly, and the first adjustment assembly is configured to rotate the projection device around the first direction.

In some embodiments, the projection device adjustment apparatus further includes a first housing with an open top, the telescopic mechanisms are fixed in the first housing, and the chassis is a bottom wall of the first housing;

the first adjusting assembly comprises a second motor and a second gear assembly, the second gear assembly comprises a first gear and a second gear which are meshed with each other, the second motor is fixed on the first shell, an output shaft of the second motor penetrates through the first shell and is connected with the second gear, and the second motor drives the second gear to rotate around the periphery of the first gear, so that the first shell rotates around the first direction.

In some embodiments, the first adjusting assembly further includes a rail-slider mechanism for moving the projection device linearly along the first direction and/or the second direction.

In some embodiments, the rail slide mechanism comprises a motor slide, a connecting plate, and a rail slide assembly;

the motor sliding table comprises a third motor, a sliding table and a screw rod, the third motor drives the screw rod to rotate, and the sliding table moves linearly along the length direction of the screw rod;

the guide rail sliding block assembly comprises a guide rail and a sliding block, and the guide rail is parallel to the screw rod;

the sliding table and the sliding block are connected into a whole through the connecting plate, and the sliding table drives the sliding block to slide along the guide rail through the connecting plate when moving;

the length directions of the screw rod and the guide rail are perpendicular to the first direction.

In some embodiments, the rail slider mechanism comprises a first rail slider mechanism and a second rail slider mechanism, and the second rail of the second rail slider mechanism is fixed to the first connecting plate of the first rail slider mechanism, such that the second rail slider mechanism is fixed to the first rail slider mechanism in a stacked manner;

the first lead screw of the first guide rail sliding block mechanism is perpendicular to the second lead screw of the second guide rail sliding block mechanism, and the first guide rail of the first guide rail sliding block mechanism is perpendicular to the second guide rail of the second guide rail sliding block mechanism.

In some embodiments, the projection device adjustment apparatus further comprises a second housing with an open top, the opening of the second housing facing the bottom of the first housing, the second housing being configured to receive the first adjustment assembly;

the first guide rail is fixed at the bottom of the second shell.

In some embodiments, the projection device adjustment apparatus further comprises a linear adjustment assembly and a second housing with an open top, the second housing having an opening facing the bottom of the first housing, the second housing being configured to receive the linear adjustment assembly;

the linear adjusting assembly comprises a universal wheel and an adjustable supporting leg, the universal wheel is fixed in the second shell, and the adjustable supporting leg is connected with the second shell;

the bottom of the first shell is abutted to the surface of the universal wheel, when the first shell is subjected to external force, the universal wheel linearly moves along the direction perpendicular to the telescopic direction of the scissor holder, and the adjustable supporting legs are used for locking the second shell.

In some embodiments, the projection device adjustment apparatus further includes a second adjustment assembly, and the second adjustment assembly is configured to drive the projection device to move linearly along the second direction and to drive the projection device to rotate around the first direction through a plurality of the telescopic mechanisms.

In some embodiments, the second adjustment assembly includes a fourth motor, a third gear, and a first rack;

the third gear is meshed with the first rack, the bottom of the first rack is fixed, and when the fourth motor drives the third gear to rotate, the third gear moves linearly along the first rack;

the length direction of the first rack is vertical to the first direction;

the driving assembly is connected with the second adjusting assembly, and the third gear drives the driving assembly to linearly move along the first rack respectively when moving.

In some embodiments, the number of the first racks is plural, and the driving assembly spans the plural first racks;

the driving assembly comprises a plurality of fourth gears, and the fourth gears are distributed on two sides of the driving assembly and meshed with the first rack.

In some embodiments, the chassis comprises a first connecting plate, a second connecting plate and a third connecting plate, wherein the first connecting plate and the second connecting plate are connected into a whole through adjusting bolts, and the third connecting plate is attached to the bottoms of the first connecting plate and the second connecting plate;

the first racks are fixed on the base.

In some embodiments, the projection device adjustment apparatus further comprises a housing;

a plurality of the shell with the base forms one side and open-topped enclosure, a plurality of telescopic machanism with the second regulating assembly all by the parcel in the enclosure.

Compared with the prior art, the adjusting device of the projection equipment has the following beneficial effects: through setting up the setting that three at least telescopic machanism is not collinear on the chassis, wherein telescopic machanism includes drive assembly, universal joint spare and scissor holder, it is flexible to drive scissor holder through drive assembly to carry out position control to the projection equipment of being connected with universal joint spare, thereby realize carrying out the position control of multi-direction and multi-angle to projection equipment, and the stroke when scissor holder extension is greater than a drive assembly's motion stroke, thereby whole height is less when making scissor holder shrink has great adjustment range simultaneously.

Drawings

To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of an adjusting apparatus of a projection device provided in the present application;

FIG. 2 is a schematic diagram of a telescopic mechanism of the adjusting device of the projection apparatus shown in FIG. 1;

FIG. 3 is a schematic view of another embodiment of a telescopic mechanism of the adjusting device of the projection apparatus shown in FIG. 1;

fig. 4 is a schematic front view of the scissor frame of the telescoping mechanism of fig. 2 and 3;

FIG. 5 is a schematic view of the hinge assembly of the telescoping mechanism of FIG. 2;

FIG. 6 is a schematic structural diagram of an embodiment of a universal joint in the telescoping mechanism of FIG. 2;

FIG. 7 is a schematic structural view of another embodiment of a universal joint in the telescoping mechanism of FIG. 2;

FIG. 8 is a schematic structural diagram of a universal joint in the telescoping mechanism of FIG. 3;

FIG. 9 is a schematic structural view of a sliding slot and a positioning member in the telescoping mechanism shown in FIGS. 2 and 3;

FIG. 10 is a schematic diagram of an axial structure of a telescopic mechanism in the adjusting device of the projection apparatus shown in FIG. 1;

FIG. 11 is an assembly view of a first embodiment of an adjustment mechanism for a projection device;

FIG. 12 is an exploded view of the first embodiment of the adjustment mechanism of the projection device of FIG. 11;

FIG. 13 is a schematic view of the internal structure of the second housing;

FIG. 14 is a schematic structural diagram of a linear adjustment assembly in another embodiment of an adjustment apparatus for a projection device provided in the present application;

FIG. 15 is a schematic structural view of the second motor and the second gear assembly of FIG. 12;

FIG. 16 is a schematic structural view of the first rail slider mechanism of FIG. 12;

FIG. 17 is a schematic structural view of the second rail-slide mechanism of FIG. 12;

FIG. 18 is a schematic view of an assembly of a second embodiment of an adjustment apparatus for a projection device;

FIG. 19 is an exploded view of the adjustment mechanism of the projection device of FIG. 18;

FIG. 20 is a schematic view of the second adjustment assembly of FIG. 19 assembled with the telescoping mechanism;

fig. 21 is a schematic structural view of the chassis in fig. 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, and are not used to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of an embodiment of an adjusting apparatus for a projection apparatus provided by the present application, and fig. 2 is a schematic structural diagram of a telescopic mechanism in the adjusting apparatus for a projection apparatus shown in fig. 1.

Referring to fig. 1 and 2, the adjusting device of the projection apparatus includes a chassis 2 and at least three telescoping mechanisms 1, each telescoping mechanism 1 includes a driving assembly 11, a scissor holder 12 and a universal connecting member 14, the driving assembly 11 is used for providing driving force and is fixed on the chassis 2, and the universal connecting member 14 is used for connecting with the projection apparatus; scissor holder 12 includes first pin joint, second pin joint and third pin joint, and wherein, scissor holder 12 is connected with chassis 2 through first pin joint, is connected with drive assembly 11 through second pin joint, is connected with universal joint 14 through third pin joint, and drive assembly 11 drive scissor holder 12 carries out elevating movement, and universal joint 14 follows scissor holder 12 and goes up and down.

The at least three telescopic mechanisms 1 are arranged on the chassis 2 in a non-collinear manner, the telescopic mechanisms 1 can be lifted independently, and the at least three telescopic mechanisms 1 are matched with each other to adjust the height of the projection equipment along the first direction, the angle around the second direction and the angle around the third direction; wherein the first direction is perpendicular to the chassis 2, the second direction and the third direction are parallel to the chassis 2, and the second direction and the third direction are perpendicular to each other.

For convenience of description, the extending and retracting direction of the scissor holder 12 is named as the z-axis direction in the present application, that is, the vertical direction is the z-axis direction, the z-axis direction is also the height direction of the projector 100, and the first direction is the z-axis direction. The second direction and the third direction perpendicular to the z-axis direction are named as an x-axis direction and a y-axis direction, respectively, the x-axis direction is the front-back direction of the projector 100, the y-axis direction is the left-right direction of the projector 100, the z-axis, the x-axis and the y-axis form a three-dimensional space, and the position and angle adjustment of the projector 100 is formed by movement in the three-dimensional space.

In a projection apparatus, the number of the plurality of telescopic mechanisms 1 may be three, four, or five, and the like, and the plurality of telescopic mechanisms are distributed at different positions of the projector 100. When the plurality of telescopic mechanisms 1 move synchronously, the projector 100 is driven to move linearly in the z-axis direction, so that the height of the projector 100 is adjusted. When the plurality of telescopic mechanisms 1 do not synchronously move, different positions of the projector 100 form height differences in the z-axis direction, and then the projector 100 is driven to rotate around the x-axis or the y-axis, so that the angle of the projector 100 is adjusted.

Taking the example of three telescopic mechanisms 1 arranged in the projection device for specific description, the three telescopic mechanisms 1 are distributed in a triangular shape. When the three telescopic mechanisms 1 synchronously operate, the projector 100 can perform linear motion on the z axis; the connecting line of the two telescopic mechanisms 1 is an axis parallel to the x axis or the y axis, and when the two telescopic mechanisms 1 and the other telescopic mechanism 1 do not synchronously move, different parts of the projector 100 have height differences to form rotation around the x axis direction or the y axis direction, so that the angle of the projector 100 is adjusted.

Specifically, a connecting line between the two telescopic mechanisms 1 is parallel to the x-axis direction, and when the motion of the two telescopic mechanisms 1 is asynchronous with the motion of the other telescopic mechanism 1, the projector 100 rotates around the x-axis direction; when the movements of the two telescopic mechanisms 1 are not synchronized, the projector 100 rotates around the y-axis direction.

Of course, the number and distribution of the telescopic mechanisms 1 may also be in various manners, for example, when the number of the telescopic mechanisms 1 is four, the telescopic mechanisms 1 may be arranged to form a square or a diamond, as long as the plurality of telescopic mechanisms 1 are not arranged in a collinear manner, which is not specifically limited in this application.

In this embodiment, three telescopic mechanisms 1 are arranged in a triangular distribution to realize linear motion of the projector 100 in the z-axis direction and rotation around the x-axis direction or the y-axis direction, so as to realize adjustment of the projector 100 in height and angle.

The driving assembly 11 may be a power device such as a motor or a cylinder, which is not limited in this application.

Shear shank 12 has great scaling ratio for the stroke when shear shank 12 extends is far greater than drive assembly 11's motion stroke, can make telescopic machanism 1 have great adjustment range, and telescopic machanism 1 is whole highly less when shear shank 12 contracts simultaneously, avoids making projection equipment's whole highly great, occupies more space.

Referring to fig. 4, fig. 4 is a front view of the scissor frame of the telescoping mechanism shown in fig. 2 and 3. The scissor frame 12 in the present application may have multiple stages, and the more the stages are, the larger the extension ratio of the extension mechanism 1 is, but the height after the extension is also higher. Taking the example that scissor frame 12 has 5 levels, scissor frame 12 has 5 hinge points formed in the middle, and for convenience of description, 5 hinge points are named hinge point one 10, hinge point two 20, hinge point three 30, hinge point four 40, and hinge point five 50 from bottom to top in sequence. Wherein, the first hinge point 10 is a first hinge point, the second hinge point 20 is a second hinge point, and the fifth hinge point 50 is a third hinge point.

A first hinge point 10 in the scissor rack 12 is fixedly connected with the chassis 2, the lower part of the scissor rack 12 is fixed, the driving assembly 11 transmits the movement of the scissor rack 12, the movement stroke is amplified to be 4 times of the original stroke, and the adjustable range is greatly increased. At the same time, when scissor holder 12 is retracted, scissor holder 12 is relatively small in height. Thus, when the telescopic mechanism 1 is contracted, the overall height is small. Preferably, the height of scissor housing 12 after retraction is close to or equal to the height of projector 100, thereby avoiding adding additional height to the overall projection device.

The number of layers of the scissor holders 12 may be different or the same, and the structure of the scissor holders 12 is the same in the present application for illustration, and the number of layers is not limited.

Specifically, in this embodiment, referring to fig. 2, the universal joint 14 is hinged to the third hinge point or the projection device through the hinge 133, so that the projection device can rotate relative to the scissor holder 12 to facilitate angle adjustment of the projection device.

In other embodiments, a flexible connection structure such as a spring or an elastic pad, or a combination thereof may be further disposed between the universal connection member 14 and the third hinge point or between the universal connection member 14 and the projection apparatus to adjust the angle of the projection apparatus.

Further, referring to fig. 5, fig. 5 is a schematic structural diagram of a hinge in the telescoping mechanism shown in fig. 2. In this embodiment, the two ends of the hinge 133 are connected to the first connecting shaft 131 and the second connecting shaft 132, the first connecting shaft 131 and the second connecting shaft 132 are hinged to each other through the hinge 133, and the hinge 133 may have any structure as long as the first connecting shaft 131 and the second connecting shaft 132 can rotate with each other within a certain angle.

When the universal connecting element 14 is hinged to the third hinge point through the hinge 133, the first connecting shaft 131 is fixedly connected to the third hinge point, and the second connecting shaft 132 is fixedly connected to the universal connecting element 14. The universal joint 14 is hinged to the projection device through a hinge 133, the first connecting shaft 131 is fixedly connected to the universal joint 14, and the second connecting shaft 132 is fixedly connected to the projection device.

The hinge 133 may be implemented in various ways as long as it has a rotational degree of freedom. In the present application, two embodiments are provided, in which the hinge 133 is a universal joint structure, and still referring to fig. 1, two ends of the hinge 133 are respectively connected to the scissor holder 12 and the universal connection element 14 through two shaft rods, and the shaft rods are connected to the universal joint, the scissor holder 12 and the universal connection element 14 through sliding bearings, so that at least one sliding bearing is ensured to meet the above-mentioned requirement of degree of freedom.

In another embodiment, hinge 133 is a ball hinge structure, and the sliding structure of the shaft rod between scissors frame 12 and universal joint 14 can also satisfy the requirement of freedom. Generally, the range of the rotation angle of the spherical hinge structure is generally small, about 15 °, so when the embodiment is used, the requirement of the angle adjustment range of the specific projection equipment adjustment device should be calculated, and the application can be performed only when the judgment that the movable range can meet the requirement.

In this embodiment, as shown in fig. 2 and 5, the universal connecting member 14 is hinged to the third hinge point through the hinge 133, the universal connecting member 14 is used to fix the projector 100 and drive the projector 100 to perform position adjustment, the fixing manner is not limited to the manner of clamping, lifting, bolt connection, lock, and the like, and the fixing manner can be adapted to different forms of projectors 100 and can be fixed firmly.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a universal connecting member in the telescoping mechanism shown in fig. 2. The universal connecting piece 14 includes a guide rod 141 and a clamping head 142 located at two ends of the guide rod 141, and the second connecting shaft 132 is connected with the guide rod 141; the connection between the guide rod 141 and the clamping heads 142 is provided with an elastic member, and the elastic force of the elastic member is directed to the direction for clamping the two clamping heads 142. In this embodiment, the universal joint 14 is designed as a vertically retractable chuck, the guide rod 141 can slide up and down in a hole of the lower chuck 142, a spring is disposed inside the lower chuck 142, the spring force direction is downward, so that the two chucks 142 are clamped, and the projector 100 is located between the upper and lower chucks 142 when in use. This arrangement allows the distance between the upper and lower ends of the universal joint 14 to be adjusted according to the height of the projector 100, and ensures clamping by the spring force.

Referring to fig. 7, fig. 7 is a schematic structural diagram of another embodiment of the universal connection component in the telescoping mechanism shown in fig. 2. Wherein, the universal connecting piece 14 comprises a connecting base 143 and a supporting plate 144; one end of the connecting base 143 is connected to the second connecting shaft 132, and the other end is connected to the supporting plate 144. The plane of the supporting plate 144 is perpendicular to the extending direction of the scissor rack 12, the projector 100 is fixed on the upper surface of the supporting plate 144, and the projector 100 is lifted by the driving of the connecting seat 143.

The universal joints 14 may share the same support plate 144, or each universal joint 14 may include a corresponding support plate 144, which is not particularly limited in this application.

Referring to fig. 3 and 8, fig. 3 is another schematic structural diagram of a telescopic mechanism in the adjusting device of the projection apparatus shown in fig. 1, and fig. 8 is a schematic structural diagram of a universal connecting member in the telescopic mechanism shown in fig. 3. Universal joint 14 is fixedly connected to scissor housing 12. The universal joint 14 includes a first connecting rod 145 and a second connecting rod 146; one end of first connecting rod 145 is vertically connected with the end of second connecting rod 146, and the other end is fixedly connected with scissor holder 12; the second connecting rod 146 is horizontally disposed. In this case, the universal joint 14 is in the form of a bracket, and supports only the projector 100 without being fixed.

Referring to fig. 9, fig. 9 is a schematic structural view of a sliding slot and a positioning member in the telescoping mechanism shown in fig. 2 and 3. In this embodiment, the telescopic mechanism 1 further includes a chute 15 and a positioning member 16; the chute 15 is vertically fixed on the scissor frame 12; the positioning piece 16 is fixedly connected with the scissor frame 12 through a second hinge point from top to bottom and penetrates through the sliding groove 15; when scissor holder 12 is extended and retracted, positioning member 16 slides along slide slot 15. The setting direction of spout 15 is vertical direction, and setting element 16 and four 40 fixed connection of pin joint, above-mentioned setting make setting element 16 only can follow vertical direction motion to rectify the direction of motion of scissors frame 12, rotate when avoiding universal joint 14 to move along with scissors frame 12, cause the angle to change in the linear displacement. The positioning member 16 in this embodiment may be a screw.

Referring to fig. 10, fig. 10 is a schematic side view of an axial structure of a telescopic mechanism in the adjusting device of the projection apparatus shown in fig. 1. The driving assembly 11 in this embodiment includes a first motor 111, a first gear assembly 112, a screw 113, and a nut 114; the first motor 111 drives the screw 113 to rotate through the first gear assembly 112; nut 114 is in threaded connection with screw 113, and is fixedly connected to a hinge point from bottom to top on first scissor frame 12 and second scissor frame 22, and nut 114 drives first scissor frame 12 and second scissor frame 22 to extend and retract when moving on screw 113.

In this embodiment, the telescoping mechanism 1 further comprises a support 17 and a support frame 18; the support 17 is fixed on the chassis 2, the first motor 111, the first gear assembly 112 and the support 18 are mounted on the support 17, and the first hinge point of the scissor frame 12 is fixedly connected with one side of the support 17; screw 113 is fixed to support frame 18 in the extending and retracting direction of first scissor frame 12.

The utility model provides a projection equipment adjusting device's first motor 111 is the power supply, first gear assembly 112 links to each other with first motor 111's output shaft, through the transmission of first gear assembly 112, it rotates to drive screw 113, the cover is equipped with nut 114 on the screw 113, nut 114 rises or descends along with screw 113's rotation, nut 114 is scissors frame 12 fixed connection respectively, thereby it stretches out and draws back to drive scissors frame 12, projector 100 is connected with scissors frame 12 through universal joint 14, thereby it carries out linear motion to drive projector 100.

In the above process, the movement stroke of nut 114 on screw 113 is enlarged by scissor frame 12, so that the adjustment range of the position in the first direction is relatively large, and the overall height of scissor frame 12 is relatively small when it is retracted, so that the overall height of the projection apparatus is not affected, and the height of the entire product is affected by the telescopic mechanism and the adjustment range of nut 114 is relatively large in a certain height.

In this embodiment, the first motor 111 is preferably a small-sized dc motor with a reduction box, which occupies a small space, is easy to control, has a large torque, and has a certain braking torque after power failure. Other parts such as a stepping motor and the like can also be used, but other parts such as a reduction gearbox, a brake and the like are used in combination, and the relative structure is more complex.

The first gear assembly 112 in this embodiment may include a plurality of gears through which the transmission is performed. The first gear assembly 112 in this embodiment includes a first transmission gear 115 and a second transmission gear 116 that are engaged with each other, the first transmission gear 115 is connected to an output shaft of the first motor 111, and the second transmission gear 116 pushes the screw 113 to rotate, so that transmission is performed between the first motor 111 and the screw 113, and the transmission process can be more stable by using the gear assembly for transmission.

Preferably, the gear ratio of the first transmission gear 115 and the second transmission gear 116 in the embodiment is 1: 1. of course, the first transmission gear 115 and the second transmission gear 116 can also be designed to have a certain reduction ratio, for example, the transmission ratio of the two gears is set to 1: 2, the torque and the control accuracy can be further improved.

In the present embodiment, the screw 113 and the nut 114 are preferably trapezoidal screw nuts, but other screws such as ball screw and nut may be used. The back of the nut 114 is provided with a small pulley to avoid the left and right rotation of the nut 114, and the movement of the nut 114 is limited to the up and down movement, although a guide rod can be added, and the two effects are the same.

The first embodiment is as follows:

referring to fig. 1, 11 and 12, fig. 11 is an assembly view of a first embodiment of an adjusting apparatus of a projection device, fig. 12 is an exploded view of the first embodiment of the adjusting apparatus of the projection device shown in fig. 11, fig. 1 is a schematic view of an internal structure of a first housing in fig. 12, and fig. 13 is a schematic view of an internal structure of a second housing.

The adjusting device of the projection apparatus in this embodiment further includes a first adjusting component 3, and the first adjusting component 3 is configured to drive the projector 100 to rotate around the extending direction of the scissor rack 12, i.e. the first direction.

In this embodiment, three telescoping mechanisms 1 are distributed in a triangular shape. The projection device adjusting device further comprises a first shell 4 with an opening at the top, the telescopic mechanisms 1 are fixed in the first shell 4, and the chassis 2 is a bottom wall of the first shell 4.

The first adjusting assembly 3 includes a second motor 31 and a second gear assembly 32, the second gear assembly 32 includes a first gear 321 and a second gear 322 engaged with each other, the second motor 31 is fixed to the bottom wall of the first housing 31, an output shaft of the second motor 31 passes through the first housing 31 and is connected to the second gear 322, and the second motor 31 drives the second gear 322 to rotate around the periphery of the first gear 321, so that the first housing 4 rotates around the first direction.

Specifically, the bottom wall of the first housing 4 is provided with a first bearing 41, a gear shaft of the first gear 321 passes through the first bearing 41, and the first housing 4 is rotatably disposed relative to the first gear 321. The first gear 321 may be fixed on a bottom plate or a housing, which is not limited in this application.

For example, in some embodiments, referring to fig. 12 and 14 in combination, the adjusting apparatus of the projection device further includes a linear adjusting component and a second housing 7 with an open top, the opening of the second housing 7 faces the bottom of the first housing 4, the second housing 7 is used for accommodating the linear adjusting component, and the linear adjusting component can drive the first housing 4 to move linearly by an external force.

Because the sensitivity of the projection picture to the degree of freedom of translation is relatively low, the picture change degree is minimal, the sensitivity to the angle is relatively large, and the movement of the projector 100 in the translation direction can be manually adjusted through the linear adjusting assembly.

Referring to fig. 14, fig. 14 is a schematic structural diagram of a linear adjustment assembly. The linear adjusting assembly in this embodiment includes a universal wheel 33 and an adjustable supporting leg 34, the universal wheel 33 is fixed in the second housing 7, and the adjustable supporting leg 34 is connected with the second housing 7 by a bolt; the bottom of the first housing 4 abuts against the surface of the universal wheel 33, and when the first housing 4 is subjected to an external force, the universal wheel 33 linearly moves in a direction perpendicular to the extending and retracting direction of the scissor holder 12, and the adjustable supporting legs 34 are used for locking the second housing 7.

Specifically, the first housing 4 slides in the x-axis direction and the y-axis direction relative to the second housing 7 through the universal wheels 33, and when adjusted to a proper position, the adjustable supporting feet 34 lock the second housing 7 so that the first housing 4 and the second housing 7 cannot move relative to each other. The above-described movement of the projector 100 in the x-axis direction and the y-axis direction is manually adjusted by applying an external force by the user.

In this embodiment, please continue to refer to fig. 1, fig. 11, fig. 12, fig. 13, and fig. 15, fig. 15 is a schematic structural diagram of the second motor and the second gear assembly. The adjusting device of the projection apparatus in this embodiment is provided with a first housing 4, which accommodates three telescopic mechanisms 1, and the three telescopic mechanisms 1 are distributed in an equilateral triangle. The first adjusting assembly 3 is disposed outside the first housing 4, and the second motor 31 drives the second gear assembly 32 to rotate the first housing 4 around the z-axis. The universal joint 14 of the telescopic mechanism 1 in this embodiment includes a connecting base 143 and a supporting plate 144, and the projector 100 is fixed on the top of the supporting plate 144. The second motor 31 is positioned in the first shell 4, and the output shaft is downwards connected with the second gear assembly 32, so that the space is more reasonably utilized, and the overall height is reduced.

In this embodiment, the first housing 4 is shaped as a closed enclosure with an open top, the supporting plate 144 covers the open top of the first housing 4 to form a closed space to enclose the telescoping mechanism 1 therein, and the output shaft of the second motor 31 passes through the first housing 4 to be connected to the second gear 322 at the lower part. The projector 100 is fixed on the supporting plate 144, and the first telescopic mechanism 1 drives the supporting plate 144 to move, so as to drive the projector 100 to move along the z-axis direction.

The second motor 31 and the second gear assembly 32 are used to adjust the rotational movement of the projector 100 about the z-axis direction in this embodiment. The first gear 321 is connected to the first bearing 41 at the bottom of the first housing 4 through a gear shaft, thereby connecting the first adjusting assembly 3 to the first housing 4, and the two move together. The second gear 322 is disposed to rotate around the periphery of the first gear 321, and the second gear 322 is connected to the second motor 31 fixed in the first housing 4, so as to drive the second motor 31 and the first housing 4 to rotate. Since the first gear 321 and the second gear 322 are both horizontally disposed, the rotation direction of the second gear 322 is about the z-axis direction. The gear ratios of the first gear 321 and the second gear 322 may be set as required, and the larger the gear ratio therebetween, the slower the rotation speed is relatively, but the higher the adjustment accuracy is.

Further, the first adjusting assembly 3 is also used to drive the projector 100 to move linearly along a direction perpendicular to the extension direction of the scissor rack 12, i.e. including the linear movement in the x-axis direction and/or the y-axis direction.

The first adjusting component 3 adjusts the projector 100 in the x-axis direction and the y-axis direction through the rail-slider mechanism, the bottom of the first gear 321 is fixedly connected with the rail-slider mechanism, and the rail-slider mechanism drives the first casing 4 and the projector 100 to perform linear motion in the first direction and/or the second direction through the second gear component 32.

Referring to fig. 16, fig. 16 is a schematic structural diagram of the first rail slider mechanism. In this embodiment, the guide rail sliding block mechanism comprises a first guide rail sliding block mechanism 5 and a second guide rail sliding block mechanism 6, and both the first guide rail sliding block mechanism 5 and the second guide rail sliding block mechanism 6 comprise a motor sliding table, a connecting plate and a guide rail sliding block assembly; the first motor sliding table of the first guide rail sliding block mechanism 5 comprises a third motor 51, a first sliding table 52 and a first screw rod 53, the third motor 51 drives the first screw rod 53 to rotate, and the first sliding table 52 moves linearly along the length direction of the first screw rod 53; the first guide rail slider assembly of the first guide rail slider mechanism 5 includes a first guide rail 54 and a first slider 55, the first guide rail 54 is parallel to the first lead screw 53; the first sliding table 52 and the first sliding block 55 are connected into a whole through a first connecting plate 56, and when the first sliding table 52 moves, the first connecting plate 56 drives the first sliding block 55 to slide along the first guide rail 54; the longitudinal directions of the first lead screw 53 and the first guide rail 54 are both perpendicular to the extending and retracting direction of the first scissor holder 12.

Referring to fig. 17, fig. 17 is a schematic structural view of the second rail-slider mechanism. In this embodiment, the guide rail slider machine further includes a second guide rail slider mechanism 6, a second motor sliding table of the second guide rail slider mechanism 6 includes a fourth motor 61, a second sliding table 62 and a second screw rod 63, the fourth motor 61 drives the second screw rod 63 to rotate, and the second sliding table 62 moves linearly along the length direction of the second screw rod 63; the second guide rail slider assembly of the second guide rail slider mechanism 6 comprises a second guide rail 64 and a second slider 65, and the second guide rail 64 is parallel to the second lead screw 63; the second sliding table 62 and the second sliding block 65 are connected into a whole through a second connecting plate 66, and the second sliding table 62 drives the second sliding block 65 to slide along the second guide rail 64 through the second connecting plate 66 when moving; the length directions of the second lead screw 63 and the second guide rail 64 are both perpendicular to the extending and retracting direction of the scissor frame 12.

In the present embodiment, the sliding directions of the first rail slider mechanism 5 and the second rail slider mechanism 6 are directed to the x-axis direction and the y-axis direction, respectively, so that the projector 100 is adjusted to perform linear motion in the x-axis direction and the y-axis direction, respectively. The first guide rail sliding block mechanism 5 and the second guide rail sliding block mechanism 6 drive the sliding table to move linearly on the screw rod through a motor of the motor sliding table, and the sliding table drives the sliding block located on the other side to slide on the guide rail through the connecting plate, so that linear motion is formed. The first lead screw 53 and the first guide rail 54 are arranged in the longitudinal direction along the x-axis direction, and the second lead screw 63 and the second guide rail 64 are arranged in the longitudinal direction along the y-axis direction.

The second rail 64 of the second rail slider mechanism 6 in this embodiment is fixed to the first connecting plate 56 of the first rail slider mechanism 5, so that the second rail slider mechanism 6 is fixed to the first rail slider mechanism 5 in a stacked manner; the first and second lead screws 53 and 63 are perpendicular to each other, and the first and

second guide rails

54 and 64 are perpendicular to each other.

Specifically, the first connecting plate 56 is bent to form a groove, and the second rail slider mechanism 6 is accommodated in the groove; the bottom of the first gear 321 is fixed to the second connecting plate 66, so that the second gear assembly 32 and the second rail slider mechanism 6 are fixed integrally; the second sliding table 62 and the second guide rail 64 are fixed on the first connecting plate 56, so that the first guide rail slider mechanism 5 and the second guide rail slider mechanism 6 are stacked, and the second gear assembly 32, the first guide rail slider mechanism 5 and the second guide rail slider mechanism 6 drive the first housing 4 to move together when moving.

In this embodiment, the first guide rail slider mechanism 5 is arranged to adjust the projector 100 to perform linear motion in the x-axis direction, the second guide rail slider mechanism 6 is arranged to adjust the projector 100 to perform linear motion in the y-axis direction, the second gear assembly 32 is arranged to adjust the projector 100 to perform rotational motion around the z-axis direction, and the first telescopic mechanism 1 on the upper portion is combined to adjust the projector 100 in the x-axis direction, the y-axis direction and the z-axis direction and adjust different angles.

The second gear assembly 32, the first guide rail slider mechanism 5 and the second guide rail slider mechanism 6 may also be respectively disposed at the lower portion of the first housing 4 to drive the first housing 4 to displace and rotate. In order to save space and reduce the height of the whole projection equipment, the second gear assembly 32, the first guide rail sliding block mechanism 5 and the second guide rail sliding block mechanism 6 are arranged in a stacking mode and connected to move together.

In this embodiment, the second gear assembly 32, the first guide rail and slider mechanism 5, and the second guide rail and slider mechanism 6 are sequentially stacked and move together. The bottom surface of the first gear 321 of the second gear assembly 32 is fixed on the second connecting plate 66 of the second rail slider mechanism 6, and the second sliding table 62 and the second rail 64 in the second rail slider mechanism 6 are both fixed on the first connecting plate 56 of the first rail slider mechanism 5, so that the three are stacked, and meanwhile, the second gear assembly 32 and the second rail slider mechanism 6 are arranged in a groove formed by downwards sinking of the first rail slider mechanism 5, so that the height of the whole body is reduced.

The adjusting device of the projection device in this embodiment further includes a second casing 7 with an open top, the opening of the second casing 7 faces the bottom of the first casing 4, and the second casing 7 is used for accommodating the first adjusting component 3; the first rail 54 is fixed to the bottom of the second housing 7. The second gear assembly 32, the first guide rail sliding block mechanism 5 and the second guide rail sliding block mechanism 6 are all arranged in the second shell 7; the first motor sliding table and the first guide rail 54 are both fixed to the bottom of the second housing 7, so that the first guide rail slider mechanism 5 cannot move, and the second gear assembly 32 and the second guide rail slider mechanism 6 on the upper portion are borne as a base, so that the displacement and the angle adjustment in different directions are performed.

Example two:

referring to fig. 18 to 20, fig. 18 is an assembly schematic view of a second embodiment of an adjusting device of a projection apparatus, fig. 19 is an exploded schematic view of the adjusting device of the projection apparatus shown in fig. 18, and fig. 20 is an assembly schematic view of a second adjusting assembly and a telescopic mechanism in fig. 19.

In this embodiment, the adjusting device of the projection apparatus further includes a second adjusting component 8, and the second adjusting component 8 is configured to drive the universal connecting component 14 to linearly move along a direction perpendicular to the telescopic direction of the scissor holder 12, and drive the universal connecting component 14 to rotate around the telescopic direction of the scissor holder 12.

The adjusting device of the projection apparatus in this embodiment includes three telescopic mechanisms 1, the three telescopic mechanisms 1 are distributed in a triangle, two telescopic mechanisms 1 are distributed on the left and right sides of the projector 100, and one telescopic mechanism 1 is distributed on the front portion of the projector 100.

As shown in fig. 19, the second adjusting assembly 8 in this embodiment includes a fourth motor 81, a third gear 82, and a first rack 83; the third gear 82 is meshed with the first rack 83, the bottom of the first rack 83 is fixed, and when the fourth motor 81 drives the third gear 82 to rotate, the third gear 82 moves linearly along the first rack 83; the longitudinal direction of first rack 83 is perpendicular to the extending and retracting direction of first scissor frame 12 and second scissor frame 22; the first driving assembly 11 and the second driving assembly 21 are both connected to the second adjusting assembly 8, and the third gear 82 drives the first driving assembly 11 and the second driving assembly 21 to move linearly along the first rack 83 when moving.

The fourth motor 81 in this embodiment drives the third gear 82 to rotate, and since the first rack 83 is fixed, the third gear 82 moves along the length direction of the first rack 83. Meanwhile, the first driving assembly 11 and the second driving assembly 21 are both fixedly connected with the third gear 82, so that the second adjusting assembly 8 is connected with the first telescopic mechanism 1 and the second telescopic mechanism 2, and the second adjusting assembly 8 drives the projector 100 to move through the first telescopic mechanism 1 and the second telescopic mechanism 2. When the third gear 82 moves, the first telescoping mechanism 1 and the second telescoping mechanism 2 also linearly move along the length direction of the first rack 83, and the length direction of the first rack 83 is the x-axis direction or the y-axis direction.

As shown in fig. 18 and 19, the number of the second adjusting assemblies 8 in the present embodiment is three, and the three second adjusting assemblies are respectively disposed on the left and right sides and the front side of the projector 100 and respectively connected to the three telescopic mechanisms 1. The direction of the first rack 83 of the second adjusting component 8 located on the left side and the right side is set along the x axis, and the direction of the first rack 83 of the second adjusting component 8 located on the front side is set along the y axis, so that the second adjusting component 8 can drive the first telescopic mechanism 1 and the second telescopic mechanism 2 to do linear motion along the x axis and the y axis respectively.

Specifically, when the second adjusting assemblies 8 on both sides move synchronously, the moving distances of both sides of the projector 100 are equal, and at this time, the projector 100 forms a linear motion along the x-axis direction. When the second adjusting components 8 on the two sides do not move and the second adjusting component 8 located at the front moves, the second telescopic mechanism 2 and the projector 100 are driven to form a linear motion along the y-axis direction. When the second adjusting assemblies 8 on the two sides do not synchronously move, the moving distances on the two sides of the projector 100 are not equal, the left side and the right side of the projector 100 form an offset, and at the moment, the projector 100 forms a rotation around the z-axis direction.

In this embodiment, the universal joints 14 in the telescopic mechanisms 1 on the left and right sides of the projector 100 are implemented by having the guide rods 141 and the clamping heads 142, so as to facilitate clamping from both sides of the projector 100, and the fixation is firm and stable. The universal joint 14 in the telescopic mechanism 1 located at the front side of the projector 100 is an embodiment having the first joint rod 145 and the second joint rod 146, the first joint rod 145 and the second joint rod 146 are formed in an L shape, since both sides of the projector 100 are clamped, the second joint rod 146 only needs to support the bottom of the projector 100, the projector 100 and the universal joint 14 are in a non-fixed connection mode, and the arrangement is convenient for the projector 100 not to collide when rotating around the z-axis direction.

Of course, the second adjusting assembly 8 can also be driven by other transmission modes to perform linear motion, such as an electric telescopic rod. The embodiment adopts a gear rack structure for transmission, and has the advantages of stable motion, low noise and high control precision.

In the present embodiment, the number of the first racks 83 is plural, and the first driving assembly 11 and the second driving assembly 21 respectively cross the plural first racks 83; the first driving assembly 11 and the second driving assembly 12 both include a plurality of fourth gears 19, and the plurality of fourth gears 19 are distributed on both sides of the first driving assembly 11 and the second driving assembly 12, and are engaged with the first rack 83, so as to ensure that the first driving assembly 11 and the second driving assembly 12 can stably and smoothly slide along the first rack 83.

Referring to fig. 21, fig. 21 is a schematic structural view of the chassis shown in fig. 19. The chassis 9 comprises a first bottom plate 91, a second bottom plate 92 and a third bottom plate 93, wherein the first bottom plate 91 and the second bottom plate 92 are connected into a whole through an adjusting bolt 94, and the third bottom plate 93 is attached to the bottoms of the first bottom plate 91 and the second bottom plate 92; a plurality of first racks 83 are fixed to the chassis 9.

Specifically, the length directions of the first bottom plate 91, the second bottom plate 92 and the third bottom plate 93 are all along the y-axis direction, the two second adjusting assemblies 8 located on the left side and the right side are respectively fixed on the first bottom plate 91 and the second bottom plate 92, and the second adjusting assembly 8 located on the front side is also fixed on the second bottom plate 92. Relative movement between the first base plate 91 and the second base plate 92 can be provided to adjust the length of the chassis 9 to accommodate projectors 100 of different sizes. After the length adjustment is completed, the first bottom plate 91 and the second bottom plate 92 are fixed and locked by the adjusting bolt 94.

The third bottom plate 93 is located at the bottom of the first bottom plate 91 and the second bottom plate 92, and the first rack 83 of the second adjusting assembly 8 is fixed at two sides of the third bottom plate 93, so that the third gear 82 forms a linear motion along the y-axis direction along the first rack 83, and the second adjusting assembly 8 located at the front side is guaranteed to move along the y-axis direction in a smooth manner.

Referring to fig. 19 again, the adjusting apparatus of the projection device in the present embodiment further includes a housing 60; a plurality of shells 60 and chassis 9 form an enclosure with an open side and top, and the telescopic mechanism 1 and the second adjustment assembly 8 are both wrapped in the enclosure.

Specifically, the housing 60 includes a first housing 601, a second housing 602, and a third housing 603, the first housing 601 and the second housing 602 respectively cover the two second adjusting assemblies 8 and the telescopic mechanisms 1 on the left and right sides, and the third housing 603 covers the second adjusting assemblies 8 and the telescopic mechanisms 1 on the front side; the first housing 601, the second housing 602, the third housing 603, and the chassis 9 form an enclosure having one side and a top opening, from which the top and the side of the projector 100 are exposed, respectively. The housing 60 is used to enclose the projector 100, the telescopic mechanism 1 and the second adjusting assembly 8, enclose the adjusting device of the projection apparatus inside, and protect the projector 100. The heights of the first housing 601, the second housing 602 and the third housing 603 are slightly larger than the height of the projector 100, so that the overall thickness of the product is prevented from being too large.

In the embodiment, by providing the second adjusting component 8, the projector 100 is adjusted by linear movement in the x-axis and y-axis directions and movement in rotation around the z-axis direction. And then is combined with the upper telescopic mechanism 1, so that the linear motion adjustment of the projector 100 in the directions of the x axis, the y axis and the z axis and the angle adjustment of the rotation around the directions of the x axis, the y axis and the z axis are realized, and all adjustment requirements of a user when using the projector 100 are met. Meanwhile, the height of all the adjusting components is close to or equal to the height of the projector 100, and additional thickness cannot be added to the finished product.

Through setting up the setting that at least three telescopic machanism is not collinear on the chassis, wherein telescopic machanism includes drive assembly, universal connecting piece and scissor holder, it is flexible to drive scissor holder through drive assembly, carry out position control with the projection apparatus that universal connecting piece is connected, thereby realize carrying out the position control of multi-direction and multi-angle to projection apparatus, and the stroke when scissor holder extends is greater than a drive assembly's motion stroke, thereby whole height is less has great adjustment range simultaneously when making scissor holder shrink.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An adjusting device of projection equipment is characterized by comprising a chassis and at least three telescopic mechanisms, wherein,

the telescopic mechanism comprises: a drive assembly for providing a driving force; the universal connecting piece is used for connecting with the projection equipment; the scissor rack comprises a first hinge point, a second hinge point and a third hinge point, wherein the scissor rack is connected with the chassis through the first hinge point, connected with the driving assembly through the second hinge point, and connected with the universal connecting piece through the third hinge point, and driven by the driving assembly to perform lifting motion;

2. The adjustment apparatus for a projection device of claim 1, wherein the universal joint is hinged to the third hinge point or the projection device via a hinge.

3. The adjusting apparatus of claim 2, wherein a first connecting shaft and a second connecting shaft are connected to two ends of the hinge, the first connecting shaft and the second connecting shaft are hinged to each other through the hinge, the first connecting shaft is fixedly connected to the third hinge point, and the second connecting shaft is fixedly connected to the universal connecting member;

4. The adjustment device of claim 3, wherein the hinge is a universal joint or a ball joint.

5. The adjustment apparatus for a projection device of claim 3, wherein the universal joint is hinged to the third hinge point via a hinge;

6. The projection device adjustment apparatus according to claim 1,

the universal connecting piece comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is vertically connected with the end part of the second connecting rod, the other end of the first connecting rod is fixedly connected with the second scissor holder, and the second connecting rod is horizontally arranged.

7. The adjusting apparatus for projection equipment according to claim 1, wherein the telescoping mechanism further comprises a sliding slot and a positioning member, the sliding slot is fixed on the scissor rack, and the positioning member is connected to the third hinge point and passes through the sliding slot;

8. The adjustment device of claim 1, wherein the driving assembly comprises a first motor, a first gear assembly, a screw, and a nut;

the first motor drives the screw to rotate through the first gear assembly;

9. The projection device adjustment apparatus according to claim 8,

the telescopic mechanism further comprises a support and a support frame;

the screw rod is fixed on the support frame along the first direction.

10. The adjustment apparatus for projection equipment of claim 1, further comprising a first adjustment assembly, the first adjustment assembly being configured to rotate the projection equipment around the first direction.

11. The adjustment apparatus for projection equipment of claim 10, wherein the adjustment apparatus for projection equipment further comprises a first housing with an open top, the telescopic mechanisms are fixed in the first housing, and the chassis is a bottom wall of the first housing;

12. The adjusting apparatus of claim 11, wherein the first adjusting assembly further comprises a rail-slider mechanism for moving the projection device linearly along the first direction and/or the second direction.

13. The projection device adjustment apparatus of claim 12, wherein the rail slider mechanism comprises a motor slide, a connection plate, and a rail slider assembly;

the length directions of the screw rod and the guide rail are both perpendicular to the first direction.

14. The adjustment apparatus for a projection device of claim 13, wherein the rail slider mechanism comprises a first rail slider mechanism and a second rail slider mechanism, and the second rail of the second rail slider mechanism is fixed to the first connecting plate of the first rail slider mechanism, such that the second rail slider mechanism is fixed to the first rail slider mechanism in a stacked manner;

15. The projection device adjustment apparatus of claim 14, further comprising a second housing with an open top, the opening of the second housing facing the bottom of the first housing, the second housing configured to receive the first adjustment assembly;

the first guide rail is fixed at the bottom of the second shell.

16. The projection device adjustment apparatus of claim 11, further comprising a linear adjustment assembly and a second housing with an open top, the second housing having an opening facing the bottom of the first housing, the second housing being configured to receive the linear adjustment assembly;

17. The adjusting apparatus for projection device of claim 1, further comprising a second adjusting component, wherein the second adjusting component is configured to drive the projection device to move linearly along the second direction and to drive the projection device to rotate around the first direction through a plurality of the telescopic mechanisms.

18. The adjustment apparatus for a projection device of claim 17, wherein the second adjustment assembly comprises a fourth motor, a third gear, and a first rack;

the length direction of the first rack is vertical to the first direction;

19. The adjustment device for a projection apparatus according to claim 18, wherein the number of the first racks is plural, and the driving assembly spans the plural first racks;

20. The adjusting apparatus of claim 19, wherein the chassis comprises a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate and the second connecting plate are connected into a whole by an adjusting bolt, and the third connecting plate is attached to the bottom of the first connecting plate and the bottom of the second connecting plate;

the first racks are fixed on the base.

21. The projection device adjustment apparatus of claim 20, wherein the projection device adjustment apparatus further comprises a housing;