CN111240146A

CN111240146A - Projector

Info

Publication number: CN111240146A
Application number: CN202010155171.7A
Authority: CN
Inventors: 闵光培; 姜琳
Original assignee: Shenzhen Polytechnic
Current assignee: Shenzhen Polytechnic
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-06-05

Abstract

The invention belongs to the technical field of projection equipment, and discloses a projector which comprises a projection component and a reflection component which are matched with each other, wherein the multi-directional projection of the projection component is realized based on the angle adjustment of the reflection component; wherein: the reflection assembly comprises telescopic cylinders fixed at the bottom of the projection assembly, and at least two telescopic cylinders are symmetrically arranged; the projection device also comprises a mounting frame connected with the movable end of the telescopic cylinder, and the mounting frame is connected with the bottom of the projection assembly in a sliding manner; the mounting frame is of a U-shaped structure, the mounting plate is rotatably mounted in a U-shaped groove of the mounting frame through a rotating shaft, a reflecting screen is embedded in the top surface of the mounting plate, and the reflecting screen realizes projection reflection of the projection assembly; in summary, in the present invention, the reflection assembly with adjustable angle is provided: specifically, the device can be used for switching the projection between the vertical display area and the horizontal display area without changing the installation state of the projector, so that the watching requirements under different conditions are met.

Description

Projector

Technical Field

The invention belongs to the technical field of projection equipment, and particularly relates to a projector.

Background

A projector is an optical instrument that magnifies the contour of a workpiece using an optical element and projects it onto a screen. Currently, most of the existing projectors can only project one directional plane, for example: when the installation direction of the projector is not changed by means of the installation structure, the projector can project on the vertically arranged or horizontally arranged projection screen independently, but cannot project on the vertically arranged projection screen and project on the horizontally arranged projection screen (such as projecting on a longitudinal wall and projecting on the top surface or the ground).

Thus, the present invention provides a projector capable of multi-directional projection.

Disclosure of Invention

The invention aims to provide a projector to solve the problems of single projection direction and large use limitation of the existing projector.

In order to achieve the purpose, the invention provides the following technical scheme: a projector comprises a projection component and a reflection component which are matched with each other, and the multi-directional projection of the projection component is realized based on the angle adjustment of the reflection component; wherein:

the reflection assembly comprises telescopic cylinders fixed at the bottom of the projection assembly, and at least two telescopic cylinders are symmetrically arranged; the projection device also comprises a mounting frame connected with the movable end of the telescopic cylinder, and the mounting frame is connected with the bottom of the projection assembly in a sliding manner;

the mounting frame is of a U-shaped structure, the mounting plate is rotatably mounted in a U-shaped groove of the mounting frame through a rotating shaft, a reflecting screen is embedded in the top surface of the mounting plate, and the reflecting screen realizes projection reflection of the projection assembly;

the one end embedding of mounting bracket has driving motor, and one side of driving motor installs the transmission shaft, all be equipped with drive gear group between driving motor's output shaft and the transmission shaft to and between the pivot of transmission shaft and mounting panel, in order to realize the rotation drive of reflecting screen.

Preferably, the device also comprises a shell provided with an opening, and the inner walls of the two sides of the shell are both provided with sliding grooves; the projection assembly is embedded into the shell, the sliding groove is located below the projection assembly, sliding rails are arranged on the outer walls of the two sides of the mounting rack, and the sliding rails slide in a matched mode with the sliding groove.

Preferably, the length of the mounting plate is greater than the depth of the U-shaped groove of the mounting frame, so that two dislocation grooves are symmetrically formed between the mounting plate and the mounting frame.

Preferably, still include the upper cover subassembly, and the upper cover subassembly includes pars contractilis, rotation portion and connecting portion, wherein the one end and the pars contractilis fixed connection of connecting portion, the other end rotates with rotation portion to be connected, and the expansion end of rotation portion forms two extensions perpendicularly, two install apron mechanism between the extension, and two extensions respectively with two dislocation groove cooperations.

Preferably, the rotating part is provided with a connecting groove, the connecting part is embedded in the connecting groove, and the length of the connecting part is greater than the depth of the connecting groove so as to form rotation limitation of the connecting part.

Preferably, an installation groove is formed in the shell above the projection assembly, a spring is fixed in the installation groove, and one end of the spring is connected with the telescopic portion, so that one end of the telescopic portion is limited in the installation groove.

Preferably, the open end of the housing is offset from one end of the projection assembly to form a relief space.

Preferably, the cover plate mechanism comprises a fixed plate welded on one side of the rotating part and a rotating plate rotatably connected between the two extending parts through a rotating shaft, the rotating shaft of the rotating plate penetrates through the fixed plate, and a matching groove matched with the fixed plate is formed in the rotating plate.

Preferably, one end of the mounting rack is provided with a buckle, and the buckle is positioned in the dislocation groove and is mutually clamped with the extension part.

Preferably, the cover plate mechanism further comprises a locking mechanism, the locking mechanism comprises a gear, a rack and a locking groove, the gear is sleeved on the rotating shaft of the rotating plate and meshed with the rack, and the locking groove is arranged on the fastener and clamped with one end of the rack.

Compared with the prior art, the invention has the following beneficial effects:

(1) in the invention, a reflection assembly with adjustable angle is arranged: specifically, the device can be used for switching the projection between the vertical display area and the horizontal display area without changing the installation state of the projector, so that the watching requirements under different conditions are met.

(2) Aiming at the reflection assembly, an automatic driving mechanism is adopted to realize the full-automatic regulation and control of the reflection assembly, and further the regulation and control accuracy is ensured. In addition, when the reflection assembly is regulated and controlled, the remote regulation and control can be carried out by combining with wireless communication, so that the intelligent control requirement of the projector is met.

(3) Aiming at the reflection assembly, the reflection assembly is arranged in a shell of the projector so as to ensure the stability of structural installation; in addition, in the projecting apparatus shell, still mutually support with shell upper cover subassembly to the safety protection to projecting assembly and reflection assembly itself in the shell is realized.

(4) Aiming at the upper cover assembly, the structure is simple; specifically include elastic stretching portion, connecting portion and rotation portion, and form the dislocation cooperation between connecting portion and the rotation portion to this can be convenient and stable realize the location restriction of upper cover subassembly, and then satisfy the user demand of whole projecting apparatus under different states.

(5) Aiming at the upper cover component, the rotating part of the upper cover component is provided with the rotatable cover plate mechanism, on one hand, the totally-enclosed protection of the integral projector is realized, and on the other hand, the rotatable cover plate mechanism can be changed into a handle, so that the integral projector has the advantage of portability.

(6) To above-mentioned rotatable apron mechanism, set locking mechanism to locking upper cover subassembly and reflection component when mentioning the projecting apparatus, thereby further realizing the protection of whole projecting apparatus, and the security when guaranteeing that the projecting apparatus carries.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the projection module and the reflection module of the present invention;

FIG. 3 is a schematic view of the assembly of the housing and the projection assembly of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 1;

FIG. 5 is a schematic view of the automatic driving mechanism in the reflection assembly;

FIG. 6 is a schematic view of a rotating part of the upper cover assembly;

FIG. 7 is a schematic structural view of a cover mechanism in the upper cover assembly;

FIG. 8 is a schematic view of a first use of the lid assembly of the present invention;

FIG. 9 is a schematic view of a second use of the lid assembly of the present invention;

FIG. 10 is an enlarged view of FIG. 9 at B;

FIG. 11 is a schematic view of a first use of the present invention;

FIG. 12 is a schematic view of a second use of the present invention;

FIG. 13 is a third schematic illustration of the use of the present invention;

in the figure: 1-projection component, 2-reflection component, 21-mounting rack, 211-driving motor, 212-transmission shaft, 213-transmission gear set, 22-sliding rail, 23-locking groove, 24-buckle, 25-mounting board, 26-reflection screen, 27-telescopic cylinder, 3-shell, 4-upper cover component, 41-mounting groove, 42-spring, 43-telescopic part, 44-rotating part, 45-connecting part, 46-extending part, 461-gear, 462-rack, 47-cover mechanism, 471-fixing board, 472-rotating board and 473-matching groove.

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.

Referring to fig. 1, a projector provided by the present invention specifically includes a projection component 1, a reflection component 2, a housing 3 and an upper cover component 4, where the projection component 1 implements a complete structure that affects projection in the existing projector, and is not described in detail herein for the prior art; the different use states of the overall projector can be fully shown in connection with the use schematic diagrams of fig. 8-9 and fig. 11-13 for the present invention. In addition, in the present invention, the following embodiments are included:

example 1

Referring to fig. 2, in the present embodiment, a projector includes a projection component 1 and a reflection component 2, which are matched with each other, and realizes multi-directional projection of the projection component 1 based on angle adjustment of the reflection component 2;

in the present embodiment, as an implementation manner, please refer to fig. 2, fig. 4 and fig. 5, the reflective element 2 has a structure form:

the projection device comprises telescopic cylinders 27 fixed at the bottom of the projection component 1, and at least two telescopic cylinders 27 are symmetrically arranged; the projection device also comprises a mounting frame 21 connected with the movable end of the telescopic cylinder 27, and the mounting frame 21 is connected with the bottom of the projection assembly 1 in a sliding manner;

the mounting rack 21 is of a U-shaped structure, a mounting plate 25 is rotatably mounted in the U-shaped groove of the mounting rack 21 through a rotating shaft, a reflecting screen 26 is embedded in the top surface of the mounting plate 25, and the reflecting screen 26 realizes projection reflection of the projection assembly 1;

a driving motor 211 is embedded in one end of the mounting bracket 21, a transmission shaft 212 is installed on one side of the driving motor 211, and a transmission gear set 213 is respectively installed between an output shaft of the driving motor 211 and the transmission shaft 212 and between the transmission shaft 212 and a rotating shaft of the mounting plate 25 to realize the rotation driving of the reflective screen 26.

In the present embodiment, the operation principle of the integral reflection assembly 2 is as follows:

(1) referring to fig. 11: at this time, the telescopic cylinder 27 is in an initial contraction state (i.e. the reflection assembly 2 is not used), the projection assembly 1 is normally used, and a projected picture is projected forward along a straight line, so that the projector is suitable for use places where the projector is suspended, such as classrooms and meeting rooms, in the same way as the conventional projector.

(2) Referring to fig. 12-13: in both states the telescopic cylinder 27 is in the start-up extended state (i.e. the reflection assembly 2 is used); the specific steps are that firstly, the telescopic cylinder 27 is started to extend the telescopic cylinder 27, so that the reflective screen 26 moves to the front of the projection assembly 1 (where the front refers to the direction of the picture projected by the projection assembly 1, and not the projection direction after reflection), and then the driving motor 211 is started to drive the mounting plate 25 through the cooperation of the transmission shaft 212 and the plurality of transmission gear sets 213, so that the mounting plate 25 rotates, that is, the use angle of the reflective screen 26 is adjusted; in the figure, when the state of fig. 12 is adjusted to the state of fig. 13, the reflective screen 26 rotates clockwise, and the projection picture is transferred from the vertical display area to the horizontal display area, and for the whole projection adjustment process, the installation position and the installation direction of the projector do not need to be changed.

In this embodiment, as a further implementable mode, regarding the angle adjustment of reflecting screen 26, can correspond and set up devices such as angle sensor, wireless transmitter to backstage such as combining cell-phone APP carries out intelligent long-range accurate control.

Example 2

In this embodiment, which is a further optimized implementation manner of embodiment 1, please refer to fig. 3 and 4, in this embodiment, the projector further includes a housing 3 having an opening, and sliding grooves are formed on inner walls of two sides of the housing 3; inside projection subassembly 1 imbeds in shell 3, and the spout is located projection subassembly 1 below, all is equipped with slide rail 22 on the both sides outer wall of mounting bracket 21, and slide rail 22 and spout cooperation slip.

In this embodiment, the installation stability of the projection unit 1 and the reflection unit 2 is further improved by the arrangement of the housing 3, and the housing protection of the projector as a whole is formed.

Example 3

In this embodiment, referring to fig. 4, the length of the mounting plate 25 is greater than the depth of the U-shaped groove of the mounting frame 21, so that two dislocation grooves are symmetrically formed between the mounting plate 25 and the mounting frame 21; specifically, the offset groove is the region a shown in fig. 4.

Referring to fig. 8, in the present embodiment, the upper cover assembly 4 further includes a telescopic portion 43, a rotating portion 44 and a connecting portion 45, wherein one end of the connecting portion 45 is fixedly connected to the telescopic portion 43, the other end of the connecting portion is rotatably connected to the rotating portion 44, the movable end of the rotating portion 44 vertically forms two extending portions 46, a cover plate mechanism 47 is installed between the two extending portions 46, and the two extending portions 46 are respectively matched with the two offset slots.

In this embodiment, the upper cover assembly 4 is connected to the reflection assembly 2 by the cooperation of the extension portion 46 and the dislocation groove, and the cover plate mechanism 47 is combined to form a closed housing for the whole projector, thereby further improving the protection effect of the projector.

Example 4

In this embodiment, as a further optimized implementation manner of embodiment 3, please refer to fig. 6 and 8, in this embodiment, a connecting groove is formed on the rotating portion 44, the connecting portion 45 is embedded in the connecting groove, and the length of the connecting portion 45 is greater than the depth of the connecting groove, so as to form a rotation limit of the connecting portion 45.

In this embodiment, a mounting groove 41 is further formed in the housing 3 above the projection module 1, a spring 42 is fixed in the mounting groove 41, and one end of the spring 42 is connected to the telescopic portion 43, so that one end of the telescopic portion 43 is limited in the mounting groove 41.

Specifically, the use state shown in fig. 8 is that the upper cover assembly 4 is opened, so that the projection assembly 1 can be used normally; at this time, the rotating portion 44 is rotated counterclockwise so that the rotating portion 44 forms a state shown in fig. 8, which is a limit state of the counterclockwise rotation of the rotating portion 44, and thus the rotating portion 44 cannot continue to rotate in this state; in addition, in combination with the limitation of the spring 42 to the telescopic portion 43, the telescopic portion 43 has a tendency to move into the mounting groove 41, thereby driving the connecting portion 45 to move, and once the connecting portion 45 moves, the rotating portion 44 is driven to further rotate counterclockwise.

In summary, in this embodiment, the spring 42 pulling structure is matched with the connecting portion 45 limiting structure, so that the opening limitation of the upper cover assembly 4 can be automatically realized, the stability of the opening limitation is effectively ensured, and the situation that the upper cover assembly 4 is closed during the normal use of the projector is avoided.

In addition, when the rotation portion 44 is rotated (clockwise), the upper cover member 4 is pulled in a direction away from the mounting groove 41, and then the rotation portion 44 is rotated, so that the state shown in fig. 9 can be formed.

Example 5

This example is a further optimized implementation of example 3 or example 4:

referring to fig. 2, in the present embodiment, the opening end of the housing 3 and one end of the projection assembly 1 are dislocated to form an abdicating space, which is the position b in fig. 2;

referring to fig. 6 and 7, in the present embodiment, the cover mechanism 47 includes a fixing plate 471 welded on one side of the rotating portion 44, and a rotating plate 472 rotatably connected between the two extending portions 46 through a rotating shaft, the rotating shaft of the rotating plate 472 penetrates through the fixing plate 471, and the rotating plate 472 is provided with a matching groove 473 matching with the fixing plate 471.

In this embodiment, a damping shaft may be used for the rotation shaft of the rotating plate 472 to improve the stability of the rotation limit of the rotating plate 472.

In the present embodiment, the working principle of the integral cover plate mechanism 47 is as follows:

(1) referring to fig. 6: the rotating plate 472 is flush with the extending portions 46, and at this time, the rotating plate 472 is matched with the fixing plate 471, so that a closed state is formed between the two extending portions 46, and therefore, the housing of the integral projector is also closed, and the projector is suitable for being packaged and transported.

(2) Referring to fig. 7: when the rotating plate 472 is rotated to be perpendicular to the extending portion 46, the fixing plate 471 remains stationary, and the rotating plate 472 is engaged with the engaging groove 473, so that the rotating plate 472 is formed in a handle shape, and the projector can be lifted based on the rotating plate 472 in this state, and the projector is suitable for being carried.

In addition, referring to fig. 7, a limiting block is further disposed on the fixing plate 471, and a limiting groove is further disposed at the matching groove 473, so that the rotating plate 472 can form effective limiting when rotating. Under this structure, the rotating plate 472 can only rotate counterclockwise, and thus the accuracy and stability of the overall structure switching are also improved.

More specifically, the rotation shaft of the rotation plate 472 is correspondingly installed at the middle position of the extension portion 46, so as to ensure the balance when the rotation plate 472 is used as a handle, and the space b is set aside in order to ensure that the rotation plate 472 can smoothly rotate and does not cause collision or interference to the projection assembly 1.

Example 6

In this embodiment, which is a further optimized implementation manner of embodiment 5, please refer to fig. 4, 9 and 10, in this embodiment, one end of the mounting frame 21 is provided with a buckle 24, and the buckle 24 is located in the offset groove and is mutually clamped with the extending portion 46; specifically, two buckles 24 are symmetrically arranged.

Further, the cover mechanism 47 further includes a locking mechanism, and the locking mechanism includes a gear 461, a rack 462 and a locking slot 23, wherein the gear 461 is sleeved on the rotating shaft of the rotating plate 472 and is engaged with the rack 462, and the locking slot 23 is opened on the buckle 24 and is fastened with one end of the rack 462.

In this embodiment, the working principle of the integral locking mechanism is as follows:

when the rotating plate 472 rotates from fig. 6 to fig. 7 (counterclockwise rotation), the rotating plate 472 is driven to rotate the rotating shaft synchronously, and then the driving gear 461 rotates counterclockwise, and the gear 461 drives the rack 462 to move downward, so that the bottom end of the rack 462 is inserted into the locking groove 23, thereby realizing the limit locking between the reflection assembly 2 and the upper cover assembly 4. After locking, when lifting the whole projector based on the rotating plate 472 (handle), the upper cover assembly 4 can be effectively limited not to move, thereby further ensuring the safety and stability during portable use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A projector characterized by: the projection device comprises a projection component (1) and a reflection component (2) which are matched with each other, and the multi-directional projection of the projection component (1) is realized based on the angle adjustment of the reflection component (2); wherein:

the reflection assembly (2) comprises telescopic cylinders (27) fixed at the bottom of the projection assembly (1), and at least two telescopic cylinders (27) are symmetrically arranged; the projection device is characterized by further comprising a mounting frame (21) connected to the movable end of the telescopic cylinder (27), wherein the mounting frame (21) is connected with the bottom of the projection assembly (1) in a sliding manner;

the mounting rack (21) is of a U-shaped structure, the mounting plate (25) is rotatably mounted in a U-shaped groove of the mounting rack (21) through a rotating shaft, the reflecting screen (26) is embedded in the top surface of the mounting plate (25), and the reflecting screen (26) realizes projection reflection of the projection assembly (1);

one end of mounting bracket (21) is embedded with driving motor (211), and one side of driving motor (211) installs transmission shaft (212), all be equipped with drive gear group (213) between the output shaft of driving motor (211) and transmission shaft (212) to and between the pivot of transmission shaft (212) and mounting panel (25) to realize the rotation drive of reflecting screen (26).

2. A projector according to claim 1, wherein: the device also comprises a shell (3) provided with an opening, and sliding grooves are formed in the inner walls of the two sides of the shell (3); the projection assembly (1) is embedded into the shell (3), the sliding grooves are located below the projection assembly (1), sliding rails (22) are arranged on the outer walls of the two sides of the mounting rack (21), and the sliding rails (22) slide in a matched mode with the sliding grooves.

3. A projector according to claim 2, wherein: the length of mounting panel (25) is greater than the degree of depth in mounting bracket (21) U type groove to make the symmetry form two dislocation grooves between mounting panel (25) and mounting bracket (21).

4. A projector according to claim 3, wherein: still include upper cover subassembly (4), and upper cover subassembly (4) include pars contractilis (43), rotation portion (44) and connecting portion (45), wherein the one end and pars contractilis (43) fixed connection of connecting portion (45), the other end rotates with rotation portion (44) to be connected, and the expansion end of rotation portion (44) forms two extensions (46) perpendicularly, two install apron mechanism (47) between extension (46), and two extensions (46) respectively with two dislocation groove cooperations.

5. A projector according to claim 4, characterized in that: the rotating portion (44) is provided with a connecting groove, the connecting portion (45) is embedded into the connecting groove, and the length of the connecting portion (45) is larger than the depth of the connecting groove so as to form rotation limitation of the connecting portion (45).

6. A projector according to claim 5, characterized in that: mounting groove (41) have been seted up to the top that lies in projection subassembly (1) in shell (3), and mounting groove (41) internal fixation has spring (42), the one end and the pars contractilis (43) of spring (42) are connected to the one end that makes pars contractilis (43) is injectd in mounting groove (41).

7. A projector according to any one of claims 4-6, characterized in that: the open end of shell (3) and the dislocation of one end of projection subassembly (1) to form the space of stepping down.

8. A projector according to claim 7, wherein: the cover plate mechanism (47) comprises a fixing plate (471) welded on one side of the rotating part (44) and a rotating plate (472) connected between the two extending parts (46) in a rotating mode through a rotating shaft, the rotating shaft of the rotating plate (472) penetrates through the fixing plate (471), and a matching groove (473) matched with the fixing plate (471) is formed in the rotating plate (472).

9. A projector according to claim 8, wherein: one end of the mounting frame (21) is provided with a buckle (24), and the buckle (24) is positioned in the dislocation groove and is mutually clamped with the extension part (46).

10. A projector according to claim 9, wherein: the cover plate mechanism (47) further comprises a locking mechanism, the locking mechanism comprises a gear (461), a rack (462) and a locking groove (23), the gear (461) is sleeved on a rotating shaft of the rotating plate (472) and is meshed with the rack (462), and the locking groove (23) is arranged on the buckle (24) and is clamped with one end of the rack (462).