CN211551103U

CN211551103U - Lifting projection screen

Info

Publication number: CN211551103U
Application number: CN202020094180.5U
Authority: CN
Inventors: 张旸; 吴泓
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-22
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a projection screen technical field, more specifically the lift projection screen that says so, including the fixed bolster device, mobile power device, lift connecting seat component, rotate connecting member, rotation projection screen component and worm rotating member, utilize the bolt to fix the ceiling board at the shed roof, according to projecting apparatus projection condition starter motor I, motor I passes through drive screw and drives and connect the slide horizontal slip, finally drive the projection screen horizontal slip, it can drive the projection screen at last to start two electric telescopic handle and reciprocate, starter motor II is connected the angle that the adjustment projection screen has a down dip through worm and worm gear transmission, can look like this the projecting apparatus accurate on the projection screen of picture, and this device is fixed at the shed roof, can save the storage space of projection screen like this.

Description

Lifting projection screen

Technical Field

The utility model relates to a projection screen technical field, more specifically the lift projection screen that says so.

Background

Projection refers to the projection of the shape of an object onto a plane with a set of rays, called "projection". The image obtained on this plane is also called "projection". The projection can be divided into a forward projection and an oblique projection. The orthographic projection is a plane in which the center line of the projection line is perpendicular to the projection plane, and the projection center line is not perpendicular to the projection plane, and is called oblique projection. The projection must have a projection screen, and most of the existing projection screens are placed on the ground, which brings great inconvenience in use and storage, so that it is particularly important to design a lifting projection screen fixed on a shed, which can save space and is not troublesome for storage space.

Disclosure of Invention

The utility model relates to a projection screen technical field, more specifically the lift projection screen that says so, including fixed bracket device, removal power device, lift connecting seat component, rotation connecting member, rotation projection screen component and worm rotation member, this device is fixed at the shed top, can save out the storage space of projection screen like this.

A lifting projection screen comprises a fixed bracket device, and further comprises a mobile power device, a lifting connecting seat member, a rotary connecting member, a rotary projection screen member and a worm rotary member, wherein the mobile power device is fixedly connected to the fixed bracket device, the lifting connecting seat member is in sliding connection with the fixed bracket device and is in threaded connection with the mobile power device, the rotary connecting member is fixedly connected below the lifting connecting seat member, the rotary connecting member is rotatably connected with the rotary projection screen member, and the worm rotary member is fixedly connected with the rotary connecting member and is in transmission connection with the rotary projection screen member.

As a further optimization of this technical scheme, the utility model relates to a lifting projection screen the fixed bracket device include ceiling board, connection otic placode and spacing traveller, the equal fixedly connected with of the left and right sides of ceiling board below connects the otic placode, two spacing travelers of fixedly connected with between two connection otic placodes.

As a further optimization of this technical scheme, the utility model relates to a lift projection screen removal power device include motor I and drive screw, motor I fixed connection is on being located the engaging lug board of right-hand member, fixedly connected with drive screw on motor I's the output shaft, drive screw's both ends rotate with two engaging lug boards respectively and are connected.

As a further optimization of this technical scheme, the utility model relates to a lift projection screen lift connecting seat component including connecting slide and electric telescopic handle, connect slide and two spacing traveller sliding connection and pass through threaded connection with drive screw, connect the equal fixedly connected with electric telescopic handle in the left and right sides of slide below.

As a further optimization of this technical scheme, the utility model relates to a lift projection screen rotation connecting elements include bearing connecting plate and bearing frame I, bearing connecting plate fixed connection is in two electric telescopic handle's below, the equal fixedly connected with bearing frame I of the left and right sides of bearing connecting plate below.

As a further optimization of this technical scheme, the utility model relates to a lift projection screen rotation projection screen component include worm gear pole, central pivot and projection screen, fixedly connected with central pivot on the worm gear pole, both ends rotate with two bearing frame I respectively about the central pivot to be connected, the below fixedly connected with projection screen of worm gear pole.

As the further optimization of this technical scheme, the utility model relates to a lift projection screen worm rotating member include worm, bearing frame II and motor II, the both ends of worm are all rotated and are connected with bearing frame II, two bearing frame II fixed connection are both ends around the bearing connecting plate respectively, motor II fixed connection is on being located the bearing frame II at rear, motor II's output shaft and worm fixed connection, the worm is connected with the worm gear transmission.

The utility model relates to a lift projection screen's beneficial effect does:

utilize the bolt to fix the ceiling board at the shed roof, according to projecting apparatus projection condition starter motor I, motor I passes through the drive screw and drives the connection slide horizontal slip, finally drive the projection screen horizontal slip, start two electric telescopic handle and finally can drive the projection screen and reciprocate, starter motor II is connected the angle that the adjustment projection screen fell down through worm and worm gear transmission, can be like this projecting apparatus accurate project the screen on, and this device is fixed at the shed roof, can save the storage space of projection screen like this.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a lifting projection screen according to the present invention;

FIG. 2 is a schematic view of a mounting bracket assembly;

FIG. 3 is a schematic view of a mobile power unit;

FIG. 4 is a schematic view of a structure of a lifting connection seat member;

FIG. 5 is a schematic view of a rotary joint member;

FIG. 6 is a schematic view of a rotating projection screen member;

fig. 7 is a schematic structural view of a worm rotating member.

In the figure: a stationary bracket device 1; 1-1 of ceiling board; connecting the ear plates 1-2; 1-3 of a limiting sliding column; a mobile power unit 2; motor I2-1; a transmission screw 2-2; a lifting connection seat member 3; connecting a sliding plate 3-1; 3-2 parts of an electric telescopic rod; a rotating connecting member 4; supporting a connecting plate 4-1; bearing seat I4-2; rotating the projection screen member 5; a worm gear 5-1; a central rotating shaft 5-2; a projection screen 5-3; a worm turning member 6; a worm 6-1; bearing seat II 6-2; motor II 6-3.

Detailed Description

The first embodiment is as follows:

the present invention relates to the technical field of projection screens, and more particularly to a lifting projection screen, which is described below with reference to fig. 1-7, and comprises a fixing bracket device 1, a moving power device 2, a lifting connecting seat member 3, a rotating connecting member 4, a rotating projection screen member 5 and a worm rotating member 6, wherein a ceiling plate 1-1 is fixed on the ceiling by bolts, a motor I2-1 is started according to the projection condition of a projector, the motor I2-1 drives a connecting slide plate 3-1 to slide left and right through a driving screw 2-2, and finally drives the projection screen 5-3 to slide left and right, two electric telescopic rods 3-2 are started to finally drive the projection screen 5-3 to move up and down, and a motor II6-3 is started to be connected with a worm wheel rod 5-1 through a worm 6-1 to adjust the declination angle of the projection screen 5-, therefore, the projector can accurately project the picture on the projection screen 5-3, and the device is fixed on the shed top, so that the storage space of the projection screen can be saved;

a lifting projection screen comprises a fixed bracket device 1, a movable power device 2, a lifting connecting seat member 3, a rotary connecting member 4, a rotary projection screen member 5 and a worm rotary member 6, wherein the fixed bracket device 1 is fixed on a shed roof to play a role of bearing and fixing, the movable power device 2 is fixedly connected on the fixed bracket device 1, the movable power device 2 can drive the lifting connecting seat member 3 to slide left and right so as to adjust the position of the rotary projection screen member 5, the lifting connecting seat member 3 is connected with the fixed bracket device 1 in a sliding way and is connected with the movable power device 2 through threads, the lifting connecting seat member 3 can adjust the height of the rotary projection screen member 5, the rotary connecting member 4 is fixedly connected below the lifting connecting seat member 3, and the rotary connecting member 4 can provide a connecting space for the rotary projection screen member 5, the rotary connecting member 4 is rotatably connected with a rotary projection screen member 5, the projector projects a picture on the rotary projection screen member 5, the worm rotary member 6 is fixedly connected with the rotary connecting member 4 and is in transmission connection with the rotary projection screen member 5, and the inclination angle of the rotary projection screen member 5 can be adjusted through the worm rotary member 6.

The second embodiment is as follows:

the present embodiment will be described with reference to fig. 1 to 7, and the fixing bracket device 1 described in the first embodiment further includes a ceiling plate 1-1, a connection ear plate 1-2, and a limit slide post 1-3. The ceiling plate 1-1 is fixed on a ceiling through bolts, the left side and the right side below the ceiling plate 1-1 are fixedly connected with connecting lug plates 1-2, the connecting lug plates 1-2 can provide fixed space for two limiting sliding columns 1-3 and can also provide rotating space for a transmission screw 2-2, the two limiting sliding columns 1-3 are fixedly connected between the two connecting lug plates 1-2, the two limiting sliding columns 1-3 can provide sliding space for the connecting sliding plate 3-1 and limit the connecting sliding plate 3-1, and the connecting sliding plate 3-1 can only slide left and right.

The third concrete implementation mode:

the following describes the present embodiment with reference to fig. 1 to 7, and the present embodiment further describes an embodiment two, where the moving power device 2 includes a motor I2-1 and a transmission screw 2-2, the motor I2-1 is fixedly connected to the connection ear plate 1-2 at the right end, the motor I2-1 can drive the transmission screw 2-2 to rotate, the output shaft of the motor I2-1 is fixedly connected to the transmission screw 2-2, the rotating transmission screw 2-2 can drive the connection slide plate 3-1 to slide left and right, so as to change the position of the projection screen 5-3, and two ends of the transmission screw 2-2 are respectively rotatably connected to the two connection ear plates 1-2.

The fourth concrete implementation mode:

the third embodiment is further described with reference to fig. 1 to 7, in which the lifting connection seat member 3 includes a connection sliding plate 3-1 and an electric telescopic rod 3-2, the connection sliding plate 3-1 is slidably connected to two limiting sliding columns 1-3 and is connected to a transmission screw 2-2 through a thread, the connection sliding plate 3-1 plays a role of bearing connection and can drive a bearing connection plate 4-1 to slide left and right, the electric telescopic rods 3-2 are fixedly connected to the left and right sides below the connection sliding plate 3-1, and the two electric telescopic rods 3-2 can adjust the height of the bearing connection plate 4-1.

The fifth concrete implementation mode:

the present embodiment is described below with reference to fig. 1 to 7, and the rotating connection member 4 further described in the fourth embodiment includes a support connection plate 4-1 and a bearing seat I4-2, the support connection plate 4-1 is fixedly connected below the two electric telescopic rods 3-2, the support connection plate 4-1 can transmit the motion to the rotating projection screen member 5, the bearing seats I4-2 are fixedly connected to the left and right sides below the support connection plate 4-1, and the two bearing seats I4-2 can provide a rotating space for the central rotating shaft 5-2 and limit the same, so that the central rotating shaft 5-2 can only rotate around its own axis.

The sixth specific implementation mode:

the present embodiment is described below with reference to fig. 1-7, and the fifth embodiment further describes that the rotating projection screen member 5 includes a worm gear 5-1, a central rotating shaft 5-2 and a projection screen 5-3, the worm gear 5-1 can drive the projection screen 5-3 to rotate, therefore, the declination angle of the projection screen 5-3 is changed, the worm wheel rod 5-1 is fixedly connected with the central rotating shaft 5-2, the central rotating shaft 5-2 can provide a rotating space for the worm wheel rod 5-1, the left end and the right end of the central rotating shaft 5-2 are respectively and rotatably connected with the two bearing seats I4-2, the projection screen 5-3 is fixedly connected below the worm wheel rod 5-1, the projector can project pictures onto the projection screen 5-3, and the device can be suitable for teaching aspects such as English teaching and Chinese teaching.

The seventh embodiment:

the present embodiment is described below with reference to fig. 1 to 7, and the worm rotating member 6 further described in the sixth embodiment of the present embodiment includes a worm 6-1, a bearing seat II6-2, and a motor II6-3, the worm 6-1 can drive a worm wheel 5-1 to rotate, two ends of the worm 6-1 are rotatably connected to the bearing seats II6-2, the two bearing seats II6-2 can provide a rotating space for the worm 6-1 and limit the rotating space, so that the worm 6-1 can only rotate around its own axis, the two bearing seats II6-2 are respectively and fixedly connected to the front and rear ends of the bearing connecting plate 4-1, the motor II6-3 is fixedly connected to the bearing seat II6-2 located at the rear, the motor II6-3 can drive the worm 6-1 to rotate, an output shaft of the motor II6-3 is fixedly connected with the worm 6-1, and the worm 6-1 is in transmission connection with the worm wheel rod 5-1.

The utility model relates to a theory of operation of lift projection screen:

a ceiling plate 1-1 is fixed on a ceiling through bolts, a motor I2-1 is started according to the projection condition of a projector, the motor I2-1 drives a connecting sliding plate 3-1 to slide left and right through a transmission screw rod 2-2, finally, a projection screen 5-3 is driven to slide left and right, the projection screen 5-3 can be driven to move up and down finally by starting two electric telescopic rods 3-2, and a motor II6-3 is started to be in transmission connection with a worm wheel rod 5-1 through a worm 6-1 to adjust the downward inclination angle of the projection screen 5-3, so that the projector can accurately project a picture on the projection screen 5-3, and the device is fixed on the ceiling, so that the storage space of the projection screen can be saved.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.

Claims

1. A lifting projection screen comprising a mounting bracket assembly (1), characterized in that: the lifting projection screen further comprises a mobile power device (2), a lifting connecting seat component (3), a rotary connecting component (4), a rotary projection screen component (5) and a worm rotary component (6), wherein the mobile power device (2) is fixedly connected to the fixed bracket device (1), the lifting connecting seat component (3) is in sliding connection with the fixed bracket device (1) and is in threaded connection with the mobile power device (2), the rotary connecting component (4) is fixedly connected to the lower portion of the lifting connecting seat component (3), the rotary connecting component (4) is connected with the rotary projection screen component (5) in a rotary mode, and the worm rotary component (6) is fixedly connected with the rotary connecting component (4) and is in transmission connection with the rotary projection screen component (5).

2. A lifting projection screen according to claim 1, wherein: the fixed bracket device (1) comprises a ceiling plate (1-1), connecting lug plates (1-2) and limiting sliding columns (1-3), the connecting lug plates (1-2) are fixedly connected to the left side and the right side of the lower portion of the ceiling plate (1-1), and the two limiting sliding columns (1-3) are fixedly connected between the two connecting lug plates (1-2).

3. A lifting projection screen according to claim 2, wherein: the mobile power device (2) comprises a motor I (2-1) and a transmission lead screw (2-2), the motor I (2-1) is fixedly connected to a connecting lug plate (1-2) at the right end, the transmission lead screw (2-2) is fixedly connected to an output shaft of the motor I (2-1), and two ends of the transmission lead screw (2-2) are rotatably connected with the two connecting lug plates (1-2) respectively.

4. A lifting projection screen according to claim 3, wherein: the lifting connecting seat component (3) comprises a connecting sliding plate (3-1) and an electric telescopic rod (3-2), the connecting sliding plate (3-1) is in sliding connection with two limiting sliding columns (1-3) and is in threaded connection with a transmission screw rod (2-2), and the electric telescopic rod (3-2) is fixedly connected to the left side and the right side below the connecting sliding plate (3-1).

5. An elevating projection screen as claimed in claim 4, wherein: the rotary connecting component (4) comprises a bearing connecting plate (4-1) and bearing seats I (4-2), the bearing connecting plate (4-1) is fixedly connected below the two electric telescopic rods (3-2), and the bearing seats I (4-2) are fixedly connected to the left side and the right side of the lower portion of the bearing connecting plate (4-1).

6. An elevating projection screen as claimed in claim 5, wherein: the rotary projection screen component (5) comprises a worm gear rod (5-1), a central rotating shaft (5-2) and a projection screen (5-3), the worm gear rod (5-1) is fixedly connected with the central rotating shaft (5-2), the left end and the right end of the central rotating shaft (5-2) are respectively connected with two bearing seats I (4-2) in a rotating mode, and the projection screen (5-3) is fixedly connected below the worm gear rod (5-1).

7. An elevating projection screen as claimed in claim 6, wherein: the worm rotating component (6) comprises a worm (6-1), bearing seats II (6-2) and a motor II (6-3), wherein the two ends of the worm (6-1) are rotatably connected with the bearing seats II (6-2), the two bearing seats II (6-2) are respectively and fixedly connected to the front end and the rear end of the bearing connecting plate (4-1), the motor II (6-3) is fixedly connected to the bearing seat II (6-2) positioned at the rear part, the output shaft of the motor II (6-3) is fixedly connected with the worm (6-1), and the worm (6-1) is in transmission connection with a worm wheel rod (5-1).