CN209893000U

CN209893000U - Expansion bracket of projector

Info

Publication number: CN209893000U
Application number: CN201920678601.6U
Authority: CN
Inventors: 胡志斌
Original assignee: Jiangxi University of Technology
Current assignee: Jiangxi University of Technology
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-01-03
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses an expansion bracket of projecting apparatus, including last base, lower base, support frame, first branch and second branch, go up the pedestal mounting under on the base, first branch is installed on last base, and second branch is installed in the centre of first branch, is equipped with first open slot and second open slot on the first branch, and first branch and second branch all are equipped with two, are equipped with connecting rod and backup pad on the second branch, and the connecting rod is installed in first open slot, and the backup pad passes through the second open slot and connects on the second branch. The telescopic frame of the projector is simple in structure and convenient to use. Through the arc piece in the lower base, when needs used the projecting apparatus, outwards pulled out one of them arc piece, the arc piece of all the other three places just can rotate out thereupon, has increaseed the support area of expansion bracket lower part for the stability of whole expansion bracket is better.

Description

Expansion bracket of projector

Technical Field

The utility model relates to a projecting apparatus auxiliary device technical field especially relates to an expansion bracket of projecting apparatus.

Background

The existing projector support frame is generally used for supporting, a triangular support is adopted to support the projector support frame, the mode is not convenient to move, meanwhile, the support point at the upper end is in one position, the upper end is stressed greatly, the projector is prone to toppling over due to external force, and accordingly the projector is damaged and poor in stability.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides an expansion bracket of projector.

A telescopic frame of a projector comprises an upper base, a lower base, a first supporting rod and a second supporting rod, and is characterized in that the upper base is installed on the lower base, the first supporting rod is installed on the upper base, the second supporting rod is installed in the middle of the first supporting rod, a first open slot and a second open slot are formed in the first supporting rod, the first supporting rod and the second supporting rod are both provided with two connecting rods and a supporting plate, the connecting rods are installed in the first open slot, the supporting plate is connected onto the second supporting rod through the second open slot, a third open slot is formed in the upper rear end of the first supporting rod, an adjusting bolt is arranged on the third open slot, a sun gear and a planetary gear are arranged inside the upper base, the sun gear and the planetary gear are installed on the lower base through a rotating shaft, the rotating shaft extends to the lower end of the lower base, and an arc-shaped block is arranged on the rotating shaft.

In the telescopic frame of the projector of the present invention, the supporting plate is provided with a mounting groove.

In the telescopic frame of the projector of the present invention, the upper base is provided with an adjusting leg.

In the telescopic frame of the projector of the present invention, the arc-shaped block is provided with universal wheels.

Implement the utility model discloses an expansion bracket of this kind of projecting apparatus has following beneficial effect: the telescopic frame of the projector is simple in structure and convenient to use. The height of the supporting plate can be locked at will through the adjusting bolt, so that the projector can be used in different occasions. And the arc piece in the lower base, when needs used the projecting apparatus, outwards pulled out one of them arc piece, and the arc piece of all the other three places just can rotate out thereupon, has increaseed the support area of expansion bracket lower part for the stability of whole expansion bracket is better. The universal wheels are also convenient to move.

Drawings

Fig. 1 is a schematic structural view of an expansion bracket of a projector according to the present invention;

FIG. 2 is another schematic view of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is another schematic view of FIG. 1;

FIG. 5 is a schematic view of the internal structure of FIG. 1;

FIG. 6 is another schematic view of the orientation of FIG. 5;

fig. 7 is a state diagram of fig. 1 in use.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 to 7, the telescopic frame of the projector of the present invention includes an upper base 10, a lower base 11, a first supporting rod 13 and a second supporting rod 14. The upper base 10 is mounted on the lower base 11, the first strut 13 is mounted on the upper base 10, and the second strut 14 is mounted in the middle of the first strut 13. The second bar 14 can be pulled up and down in the first bar 13 to adjust the height.

The first opening groove 15 and the second opening groove 16 are formed in the first supporting rod 13, the first supporting rod 13 and the second supporting rod 14 are both provided with two connecting rods 17 and supporting plates 18, the connecting rods 17 are installed in the first opening groove 15, and the supporting plates 18 are connected to the second supporting rod 14 through the second opening groove 16. The two second supporting rods 14, the supporting plate 18 and the connecting rod 17 are of an integral structure, so that the stability of the supporting plate 18 is enhanced, and the supporting plate 18 can support the projector. The supporting plate 18 is provided with a mounting groove 181, and the mounting groove 181 is used for placing a projector. The first support rod 13 is provided with a third opening groove 131 at the rear end thereof, and the third opening groove 131 is provided with an adjusting bolt 19. The second rod 14 is fixed by pressing the second rod 14 against the first rod 13 by rotating the adjusting bolt 19 in the third opening groove 131.

The upper base 10 is internally provided with a sun gear 20 and a planet gear 21, the sun gear 20 and the planet gear 21 are mounted on the lower base 11 through a rotating shaft 22, the rotating shaft 22 extends to the lower end of the lower base 11, and the rotating shaft 22 is provided with an arc-shaped block 23. Four planetary gears 21 are arranged beside the sun gear 20, and the four planetary gears 21 are all meshed with the sun gear 20. When the telescopic frame of the projector is needed to be used, the other three arc-shaped blocks 23 can be unfolded by pulling one of the arc-shaped blocks 23 open, so that the telescopic frame is convenient to adjust, the stress area of the lower base 11 is increased, and the stability of the whole telescopic frame is enhanced.

In order to facilitate the placement of the telescopic frame when not in use, the upper base 10 is provided with an adjusting leg 101, and the adjusting leg 101 can rotate to adjust the height. Be equipped with universal wheel 231 on the arc piece 23 of each department simultaneously, universal wheel 231 can conveniently remove, sets up the brake block simultaneously on universal wheel 231, and the convenience is fixed with universal wheel 231.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic frame of a projector comprises an upper base, a lower base, a first supporting rod and a second supporting rod, and is characterized in that the upper base is installed on the lower base, the first supporting rod is installed on the upper base, the second supporting rod is installed in the middle of the first supporting rod, a first open slot and a second open slot are formed in the first supporting rod, the first supporting rod and the second supporting rod are both provided with two connecting rods and a supporting plate, the connecting rods are installed in the first open slot, the supporting plate is connected onto the second supporting rod through the second open slot, a third open slot is formed in the upper rear end of the first supporting rod, an adjusting bolt is arranged on the third open slot, a sun gear and a planetary gear are arranged inside the upper base, the sun gear and the planetary gear are installed on the lower base through a rotating shaft, the rotating shaft extends to the lower end of the lower base, and an arc-shaped block is arranged on the rotating shaft.

2. The telescopic bracket of a projector according to claim 1, wherein the support plate is provided with a mounting groove.

3. The telescopic bracket of a projector according to claim 1, wherein the upper base is provided with an adjusting leg.

4. The telescopic bracket of a projector according to claim 1, wherein the arc-shaped block is provided with universal wheels.