CN218972317U

CN218972317U - Electric adjusting base for projector

Info

Publication number: CN218972317U
Application number: CN202223243118.6U
Authority: CN
Inventors: 傅若清; 张雨; 刘德宽
Original assignee: Cfg Barco Beijing Electronics Co ltd
Current assignee: Cfg Barco Beijing Electronics Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-05
Anticipated expiration: 2032-12-05

Abstract

The utility model provides an electric adjusting base for a projector, wherein two end sides of the adjusting base are fixed on one side of the upper edge of a supporting base, an adjusting bracket is buckled on an adjusting assembly, and the adjusting bracket is fixed with the other side of the upper edge of the supporting base through a ball head assembly. The adjusting component consists of an adjusting support, a clutch, a connecting rod and a stepping motor, wherein the adjusting support is fixed with the upper edge of the adjusting base, the stepping motor is arranged at the middle shaft between the adjusting supports, and the clutch and the connecting rod are symmetrically arranged on two sides of the stepping motor. The adjusting support is provided with an adjusting table, and the adjusting table is supported at the bottom of the adjusting support. The utility model has the advantages that various adjustments such as projector height, inclination angle adjustment and bilateral level are realized by using the stepping motor and the speed reduction supporting device (adjusting component), so that the position of the projector can be controlled and adjusted more conveniently and rapidly, and the system control requirement with higher precision is met compared with manual adjustment.

Description

Electric adjusting base for projector

Technical Field

The utility model relates to the field of projectors, in particular to an electric adjusting base for a projector.

Background

Currently, the adjustment of the projector in the horizontal direction relies on manual adjustment of the anchor threads. The adjustment method depends on manual work, and each time the anchor threads are manually adjusted, the user needs to get up to see whether the projection picture of the projector on the screen is horizontal or not.

However, the film projector has a large projection area and a long projection distance, and therefore, has a high position requirement. In the actual use process, the vibration of the machine body, the ventilation system, the heat dissipation system and the like is easy to deviate. The existing adjusting scheme basically relies on manual adjustment of the ground anchor level, is laborious, time-consuming and low in precision, does not meet the current technical requirement for system adjustment, is high in adjusting frequency due to easy loosening of manual adjustment, and further increases labor cost.

Disclosure of Invention

The utility model provides an electric adjusting base for a projector, which is used for solving the problems of labor and time consumption, low precision and high debugging cost when the level of the projector is manually adjusted in the prior art.

In order to achieve the above object, the present utility model provides an electric adjustment base for a projector, including: the device comprises an adjusting bracket, a supporting base, an adjusting assembly and a ball head assembly. The two end sides of the adjusting base are fixed on one side of the upper edge of the supporting base, the adjusting component is buckled with an adjusting bracket, and the adjusting bracket is fixed with the other side of the upper edge of the supporting base through the ball component. The adjusting assembly comprises an adjusting support, a clutch, a connecting rod and a stepping motor, wherein the adjusting support is fixed with the upper edge of the adjusting base, the stepping motor is arranged at the middle shaft between the adjusting supports, and the clutch and the connecting rod are symmetrically arranged on two sides of the stepping motor. The adjusting support is provided with an adjusting table, and the adjusting table is supported at the bottom of the adjusting support.

As the preference of above-mentioned technical scheme, preferably, the adjustment support still includes connecting cable, connecting cable one end and projector are connected, and the other end has three plug, respectively with two clutch and stepper motor are connected.

Preferably, the cable body has a connection terminal, which is connected to the control box.

As the optimization of the technical scheme, preferably, the ball head assembly consists of an upper head rod and a lower ball seat, wherein the lower ball seat is arranged on the other side of the upper edge of the support base and is fixed on the inner wall of the support base, and the lower ball seat is connected with the upper head rod.

Preferably, as a preference of the above technical solution, the top of the upper head rod is a disc, and the top of the disc is connected with the end of the adjusting bracket.

Preferably, the adjusting table has a worm and gear structure, and the connection part of the worm and gear structure and the connecting rod is a trapezoidal thread.

Preferably, the motor is an asynchronous motor, and each of two sides of the motor has an output shaft.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure provided in an embodiment of the present utility model.

Fig. 2 is an exploded view of an adjustment assembly according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1 and fig. 2 are schematic structural diagrams provided in the embodiment of the present utility model, and in combination with the structures shown in fig. 1 and fig. 2, the embodiment provides that the method includes: the device comprises an adjusting bracket 1, a supporting base 2, an adjusting assembly 3, a connecting cable 4, a control box 5 and a ball head assembly 6. The adjusting component 3 consists of an adjusting support 31, a clutch 32, a connecting rod 33 and a stepping motor 34; the ball head assembly 6 is composed of an upper head rod 61 and a lower ball seat 62.

The two end sides of the adjusting base are fixed on one side of the upper edge of the inner wall of the supporting base 2, the adjusting component 3 is buckled with the adjusting bracket 1, and the adjusting bracket 1 is fixed on the other side of the upper edge of the inner wall of the supporting base 2 through the ball head component 6. The adjusting support 31 is provided with an adjusting table, and the adjusting table is supported at the bottom of the adjusting bracket 1. The support base 2 is fixed on the foundation of the stable ground and plays a role in fixing and supporting the whole structure. The upper part of the adjusting bracket 1 is connected with the projector footing to play a role of fixing the machine body.

Specifically, an adjusting support 31 of the adjusting assembly 3 is fixed with the upper edge of the adjusting base, a stepping motor 34 is arranged at the middle shaft between the adjusting supports 31, and a clutch 32 and a connecting rod 33 are symmetrically arranged on two sides of the stepping motor 34. The motor is an asynchronous motor, and has an output shaft on each side, and a connecting rod 33 is disposed on each output shaft. The connecting rod 33 is connected with a worm and gear structure in the adjusting table, and the connecting part is a trapezoidal thread.

The base of the ball head assembly 6 is arranged on the other side of the upper edge of the inner wall of the supporting base 2, and a lower ball seat 62 of the ball shaft assembly is connected with an upper head rod 61. The top of the upper head rod 61 is a disc, and the top of the disc is connected to the end of the adjusting bracket 1, so that the adjusting bracket 1 can rotate along with the rotation direction of the ball shaft.

The connecting cable 4 has one end connected to the projector and the other end provided with three connectors, which are connected to two clutches 32 and stepper motors 34, respectively. The cable body is provided with a wiring terminal which is connected with the control box 5.

The structure will now be described in further detail:

the inner wall of the front end of the adjusting bracket 1 is connected with the supporting base 2 through an upper head rod 61, so that when the ball shaft rotates, the upper head rod 61 rotates along with the ball shaft, and the adjusting bracket 1 circumferentially rotates around the ball shaft to adjust the inclination angle and deflection of the adjusting machine body. The rear part of the adjusting support 1 is supported by adjusting supports 31 on two sides, and the up-and-down movement of the ejector rod of the adjusting support 31 drives the upper support of the adjusting support 31 to rotate and lift.

The ball head assembly 6 is arranged at the front end and is responsible for connecting the adjusting bracket 1 and the supporting base 2. The ball head assembly 6 can be rotated circumferentially to accommodate the rear adjustment requirement. The three-point support of the adjusting component 3 can ensure that the adjusting bracket 1 is positioned on a plane, so that the deformation problem caused by a four-point system is avoided, and the adjustment requirement of higher precision is met. The ball head assembly 6 is composed of an upper head rod 61 and a lower ball seat 62, and can provide greater supporting force and smaller adjusting damping.

The horizontal input shaft of the adjustment support 31 is connected with a stepping motor through a driving connecting rod 33, and the top of the adjustment support 31 is fixed with an adjustable bottom plate. The height of the adjustable bottom plate is adjusted by converting the axial rotation input by the connecting rod 33 into radial linear motion through the worm gear and the trapezoidal thread structure. The turbine worm mechanism reduces the high-speed rotation of the motor into low-speed linear motion and simultaneously provides strong supporting force for adjusting the bottom plate. The stepper motor 34 has two output shafts, a left clutch 32 and a right clutch 32 are respectively arranged between the two output shafts and the two driving connecting rods 33, the two driving connecting rods 33 are used for adjusting the opening/closing degree between the bracket 1 and the adjusting base through the clutches 32, and the driving connecting rods 33 can also adjust the overall axial and radial errors of the mechanism while transmitting torque.

The stepper motor 34 is in a safe low-voltage operation mode and has the functions of high precision control, overload protection and the like.

The control box 5 is used for integrating corresponding control buttons, signals and power cables. The device is fixed on the supporting base 2 for operation, and can be taken off for handheld operation (cables have redundant designs), so that an operator can observe the condition of pictures near a projection window conveniently. The control box 5 is provided with "left", "right", "two-way" position selection buttons, and "up", "down" direction control buttons with respect to the adjustment support 31. The single-side or double-side up-down adjusting movement can be controlled respectively. The connection cables 4 are used to couple the respective electronic control assemblies. The cable is divided into two parts of a signal cable and a power cable. The left clutch 32, the right clutch 32, the stepping motor and the control box 5 are connected through three wiring terminals of a signal cable respectively, and the tail end of the power cable is inserted into a power output terminal of the motor to obtain 24V power output. The signal cable can be connected into the projector control system and adjusted by the system control software interface.

In the embodiment of the present utility model, after the control box 5 selects the corresponding button function, the worker first turns on the corresponding electronically controlled clutch 32, then presses the adjusting button, starts the stepper motor, and drives the corresponding connecting rod 33 to rotate the left/right or two-sided (same direction) adjusting support 31. The support changes the rotation direction into the up-down linear motion of the ejector rod to adjust the adjustable bottom plate to rotate around the base hinge, so as to achieve the purpose of adjusting the inclination angle and the level of the projector.

The adjustment process is as follows: firstly, bidirectional simultaneous adjustment is selected, the approximate preset position is quickly reached, and then, the left/right single side is selected for fine adjustment to complete positioning setting. First, the "two-way" position setting button is selected to be pressed, and the electrically controlled clutches 32 on both the left and right sides are turned on. When the up/down direction control button is pressed, the motor is started, the output shaft is connected with the left and right connecting rods 33 through the clutch 32 to drive the left and right side adjusting supports 31, and when the projection picture position on the screen is observed to reach the approximate superposition position, the direction control button is loosened, and the motor stops moving. At this time, the position button is switched to the left or the right, only the clutch 32 corresponding to one side is communicated, when the up/down direction control button is continuously pressed, the motor is started, the one-side adjusting support 31 is driven, and the projection picture position is driven to approach the superposition position. The method is repeated for several times, and the final adjustment coincidence can be achieved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. An electrically adjustable base for a projector, comprising: the adjusting bracket, the supporting base, the adjusting component and the ball component,

the two end sides of the adjusting base are fixed on one side of the upper edge of the supporting base, the adjusting component is buckled with the adjusting bracket, and the adjusting bracket is fixed with the other side of the upper edge of the supporting base through the ball head component;

the adjusting assembly consists of an adjusting support, a clutch, a connecting rod and a stepping motor, wherein the adjusting support is fixed with the upper edge of the adjusting base, the stepping motor is arranged at the middle shaft between the adjusting supports, and the clutch and the connecting rod are symmetrically arranged on two sides of the stepping motor;

the adjusting support is provided with an adjusting table, and the adjusting table is supported at the bottom of the adjusting support.

2. The motorized adjustment base of claim 1, wherein the adjustment bracket further comprises a connecting cable having one end connected to the projector and the other end having three connectors connected to the two clutches and stepper motor, respectively.

3. The electrically adjustable base of claim 2, wherein the cable body has a terminal, the terminal being connected to the control box.

4. The electrically adjustable base of claim 1, wherein the ball head assembly comprises an upper head rod and a lower ball seat, the lower ball seat is disposed on the other side of the upper edge of the support base and fixed to the inner wall of the support base, and the lower ball seat is connected with the upper head rod.

5. The motorized adjustment base of claim 4, wherein the top of the upper head rod is a disk that is connected to the end of the adjustment bracket.

6. The electrically adjustable base of claim 1, wherein the adjustment table has a worm and worm gear structure therein, the connection of the worm and worm gear structure to the connecting rod being a trapezoidal thread.

7. The electrically adjustable mount of claim 1 wherein the motor is an asynchronous motor having an output shaft on each side.