Special multimedia teaching projection device for interior design

Abstract

The utility model discloses a special multimedia teaching projection device for interior design, which relates to the technical field of projection devices and comprises a mounting plate, a fixing cylinder and a projector, a transverse sliding component is arranged on the bottom surface of the mounting plate, a fixing plate is arranged on the top surface of the fixing cylinder, a telescopic cylinder is arranged in the fixing cylinder in a sliding manner, and a lifting component is arranged in the fixing cylinder. A fixing assembly is arranged on one side of the bottom end of the outer wall of the fixing cylinder, a fixing disc is fixedly connected to the bottom end of the telescopic cylinder, multiple sets of fixing bolts penetrate through the fixing disc to be connected with the projector, and a rectangular groove is formed in one face of the fixing cylinder; the dovetail guide blocks are matched with the telescopic cylinder, the dovetail guide blocks are symmetrically arranged on the two sides of the bottom end of the inner wall of the fixed cylinder, the telescopic cylinder moves along a track limited by the dovetail guide blocks in the lifting process, and finally the problems that an existing lead screw deflects due to gravity, lifting of the projection device is blocked, and teaching convenience and efficiency are affected are solved. And the use effect and the teaching efficiency of the projection device are improved.

Description

Technical Field

[0001] This utility model relates to the field of projection device technology, and in particular to a multimedia teaching projection device specifically for interior design. Background Technology

[0002] In the field of modern education, multimedia teaching has become an indispensable and important means, especially in interior design education. Multimedia teaching projection devices play a key role. The teaching content of interior design covers a large number of complex design cases, 3D models, detailed drawings and dynamic video demonstrations. These rich and diverse teaching materials need to be clearly presented to students through efficient and accurate projection equipment to help them better understand and master professional knowledge.

[0003] Existing projector devices with electric lifting mechanisms typically use lead screws for raising and lowering. When the lead screw bears the weight of the projector, it is prone to deflection due to gravity during long-term use. Once the lead screw deflects, the projector device will experience jamming during the raising and lowering process, making it unable to operate smoothly. This can greatly disrupt the teaching rhythm when there is an urgent need to quickly adjust the projection height to meet the display requirements of different teaching content. At the same time, the deflection of the lead screw also seriously affects the positioning accuracy of the projector device, making it difficult to accurately project the image to the intended position. Teachers have to make repeated adjustments, which seriously reduces the convenience and efficiency of teaching. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multimedia teaching projection device specifically for interior design.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multimedia teaching projection device for interior design, comprising a mounting plate, a fixing cylinder, and a projector. The mounting plate has a horizontal sliding component on its bottom surface, a fixing plate on its top surface, a telescopic cylinder slidingly disposed inside the fixing cylinder, a lifting component inside the fixing cylinder, a fixing component on one side of the bottom of the outer wall of the fixing cylinder, a fixing plate fixedly connected to the bottom of the telescopic cylinder, multiple sets of fixing bolts passing through the fixing plate and connected to the projector, a rectangular groove being formed on one side of the fixing cylinder, and a locking plate protruding from the top of the rectangular groove on the telescopic cylinder.

[0006] Preferably, the lateral sliding assembly includes a drive motor installed on the outer wall of one end of the mounting plate, an I-shaped sliding groove is formed on the inner bottom surface of the mounting plate, a first lead screw is inserted in the I-shaped sliding groove, one end of the first lead screw is coaxially fixed to the drive motor, a first slider is slidably mounted on the first lead screw, and multiple sets of mounting bolts are inserted between the bottom surface of the first slider and the fixing plate.

[0007] Preferably, the first slider is inverted T-shaped, and multiple sets of pulleys are symmetrically arranged on both sides of the upper end of the outer wall of the first slider. The I-shaped sliding groove is provided with a pulley guide rail at the pulley.

[0008] Preferably, the lifting assembly includes a second lead screw rotatably mounted at the center of the top surface inside the fixed cylinder, a large gear coaxially fixed to the upper end of the second lead screw, a small gear meshing with one side of the large gear, and a servo motor coaxially fixed to the small gear at a location on the top surface inside the fixed cylinder.

[0009] Preferably, the fixing component includes a limiting block inserted at the bottom end of one side of the outer wall of the fixing cylinder. There are two limiting blocks, and multiple first springs are fixedly connected between the two limiting blocks. A pull rod is fixedly connected to one of the two limiting blocks near the outer wall of the fixing cylinder. Multiple limiting holes corresponding to the limiting blocks are equally spaced on the outer wall of the telescopic cylinder.

[0010] Preferably, two dovetail guide blocks are symmetrically provided on both sides of the bottom end of the inner wall of the fixed cylinder, two locking holes are symmetrically provided on both sides of the bottom end of the rectangular groove, sliding grooves are symmetrically provided on both ends of the top surface of the locking plate, a pull plate is slidably provided on the sliding groove, a locking pin is fixedly connected to one side of the pull plate, a second spring is fixedly connected to the other side of the pull plate, and round holes for the locking pin to extend are provided on both ends of the locking plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the dovetail guide block and the telescopic cylinder, with the dovetail guide block symmetrically arranged on both sides of the bottom end of the inner wall of the fixed cylinder, allows the telescopic cylinder to move along the trajectory defined by the dovetail guide block during the lifting and lowering process, which facilitates the restriction of the movement direction of the telescopic cylinder and improves the stability of the lifting and lowering process. This enables the projection device to lift and lower smoothly. Furthermore, through the cooperation of the limiting block and the limiting hole in the fixed component, with the limiting block inserted at the bottom end of one side of the outer wall of the fixed cylinder and corresponding to the limiting hole on the outer wall of the telescopic cylinder, the limiting block can be tightly engaged in the limiting hole under the action of the first spring, which facilitates the fixing of the position of the telescopic cylinder and improves the positioning accuracy of the projection device. This enables the fixed cylinder to shake and the lead screw to be stabilized. Ultimately, this solves the problem that the existing lead screw deflects due to gravity, causing the projection device to lift and lower and get stuck, affecting the convenience and efficiency of teaching. This improves the use effect and teaching efficiency of the projection device. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the telescopic cylinder proposed in this utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the fixing component proposed in this utility model;

[0016] Figure 4 This is a partial cross-sectional view of the locking plate proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the large gear proposed in this utility model;

[0018] Figure 6 This is a partially enlarged cross-sectional view of the transverse sliding component proposed in this utility model.

[0019] The numbers in the diagram are: 1. Mounting plate; 2. Fixing cylinder; 3. Projector; 4. Fixing plate; 5. First slider; 6. Telescopic cylinder; 7. Limiting block; 8. Pull rod; 9. Dovetail guide block; 10. Second lead screw; 11. Limiting hole; 12. Pull plate; 13. Large gear; 14. Drive motor; 15. First lead screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example: See Figure 1-6This utility model discloses a multimedia teaching projection device for interior design, comprising a mounting plate 1, a fixed cylinder 2, and a projector 3. The mounting plate 1 has a horizontal sliding assembly on its bottom surface. The fixed cylinder 2 has a fixed plate on its top surface. A telescopic cylinder 6 slides inside the fixed cylinder 2. A lifting assembly is also located inside the fixed cylinder 2. A fixed assembly is located on one side of the bottom of the outer wall of the fixed cylinder 2. A fixed plate 4 is fixedly connected to the bottom of the telescopic cylinder 6. Multiple sets of fixing bolts pass through the fixed plate 4 and connect it to the projector 3. A rectangular groove is formed on one side of the fixed cylinder 2, and the telescopic cylinder 6 is located within the rectangular groove. A locking plate protrudes from the top; the mounting plate 1, made of aluminum alloy, is lightweight and high-strength, providing a stable mounting foundation for the entire projection device. The fixing cylinder 2 and telescopic cylinder 6 are made of lightweight aluminum alloy, reducing the overall weight while ensuring structural strength. This structure lays the foundation for subsequent functions such as position adjustment, height adjustment, and stable fixation, enabling the projection device to achieve multiple functions; the lateral sliding assembly includes a drive motor 14 installed on the outer wall of one end of the mounting plate 1, and an I-shaped sliding groove is opened on the inner bottom surface of the mounting plate 1. A first lead screw 15 is inserted into the sliding groove. One end of the first lead screw 15 is coaxially fixed to the drive motor 14. A first slider 5 slides on the first lead screw 15. Multiple sets of mounting bolts are inserted between the bottom surface of the first slider 5 and the fixing plate. A Panasonic MINASA 6 series servo motor is selected as the drive motor 14. Its high responsiveness and high-precision positioning characteristics provide stable and accurate power output for the rotation of the first lead screw 15. Combined with the aluminum alloy mounting plate 1, it ensures that the first slider 5 can accurately adjust the lateral position of the projection device under the drive of the lead screw. The design is comprehensive, meeting the diverse teaching scenarios that require flexible changes in the horizontal position of the projection device, thus improving its usability. The first slider 5 is inverted T-shaped, with multiple sets of pulleys symmetrically arranged on both sides of the upper end of the outer wall of the first slider 5. An I-shaped sliding groove is provided with a pulley guide rail at the pulley location. The inverted T-shaped design, in conjunction with the pulleys and guide rails, ensures the stability and smoothness of the first slider 5 during horizontal sliding. The aluminum alloy mounting plate 1 provides stable support for the entire sliding structure, reducing jamming during sliding and improving the efficiency and stability of horizontal position adjustment.

[0022] In this invention, the lifting assembly includes a second lead screw 10 rotatably mounted at the center of the top surface inside the fixed cylinder 2. A large gear 13 is coaxially fixed to the upper end of the second lead screw 10, and a small gear meshes with one side of the large gear 13. A servo motor is coaxially fixed to the small gear at a location on the top surface inside the fixed cylinder 2. A Delta ASDA-B3 series servo motor is used as the motor in the lifting assembly. Its excellent speed control performance and torque characteristics ensure smooth rotation of the second lead screw 10. Combined with the lightweight aluminum alloy fixed cylinder 2, it achieves [the desired lifting effect]. The projection device height is precisely adjustable to adapt to the projection height requirements of different teaching content, improving the accuracy of height adjustment; the fixing component includes two limiting blocks 7 inserted at the bottom end of one side of the outer wall of the fixing cylinder 2, and multiple first springs are fixedly connected between the two limiting blocks 7. A pull rod 8 is fixedly connected to the limiting block 7 closest to the outer wall of the fixing cylinder 2. Multiple limiting holes 11 corresponding to the limiting blocks 7 are equidistantly opened on the outer wall of the telescopic cylinder 6; the limiting blocks 7 are made of stainless steel, which has high strength and strong corrosion resistance. After the telescopic cylinder 6 is raised or lowered to the appropriate position, the limiting block 7 can firmly fix the telescopic cylinder 6 with the help of the first spring, preventing displacement due to gravity or external force. The lightweight aluminum alloy fixed cylinder 2 and telescopic cylinder 6 further enhance the overall structural stability and ensure stable projection of the image. Two dovetail guide blocks 9 are symmetrically provided on both sides of the bottom end of the inner wall of the fixed cylinder 2. Two locking holes are symmetrically opened on both sides of the bottom end of the rectangular groove. Sliding grooves are symmetrically opened at both ends of the top surface of the locking plate. A pull plate 12 is slidably provided on the sliding groove. A locking plug is fixedly connected to one side of the pull plate 12. A second spring is fixed to the other side of the pin and pull plate 12. The locking plate has round holes on both ends for the locking pin to extend out. The limit block 7 and the pull plate 12 are made of stainless steel to ensure long-term stable use. When the telescopic cylinder 6 moves to the bottom, the locking pin cooperates with the locking hole to achieve double locking of the telescopic cylinder 6. The lightweight aluminum alloy fixed cylinder 2 enhances the overall structural strength and effectively prevents shaking caused by external force collisions and other accidents, improves the stability of the projection device under special conditions, and ensures accurate projection of the image.

[0023] Working Principle: When using this utility model, if the position of the multimedia teaching projection device for indoor design needs to be adjusted, the drive motor 14 is started, which drives the first lead screw 15 to rotate. This causes the first slider 5, which is threaded to the first lead screw 15 and is in the shape of an inverted T, to slide smoothly laterally along the groove in the mounting plate 1 by means of the rolling of the pulleys on both sides of the upper end of the outer wall on the pulley guide rail in the I-shaped sliding groove. Since the bottom surface of the first slider 5 is connected to the fixed plate by multiple sets of mounting bolts, the fixed cylinder 2 is driven to achieve lateral position adjustment to meet the needs of different teaching scenarios. When adjusting the height of the projection device, the servo motor is started, which drives the small gear to rotate. The small gear drives the large gear 13 that meshes with it, causing the second lead screw 10 to rotate. The telescopic cylinder 6, which is threaded to the second lead screw 10, is inside the fixed cylinder 2 and is guided by the dovetail guide blocks 9 on both sides of the bottom end of the inner wall of the fixed cylinder 2 to rise and fall only in the vertical direction, thus achieving... Height adjustment: After the telescopic cylinder 6 is raised or lowered to the appropriate position, the limiting block 7 inserted at the bottom of one side of the outer wall of the fixed cylinder 2 automatically inserts into the limiting holes 11 equidistantly opened on the outer wall of the telescopic cylinder 6 under the action of the first spring, fixing the position of the telescopic cylinder 6 to prevent displacement due to gravity or external force, and ensuring height stability; if the height needs to be adjusted again, pull the lever 8 to drive the limiting block 7 near the outer wall of the fixed cylinder 2 to disengage from the limiting hole 11, and the servo motor can be restarted for adjustment; when the telescopic cylinder 6 moves to the bottom, the second spring automatically lifts the pull plate 12, and the pull plate 12 drives the locking pin to extend and insert into the locking holes symmetrically opened on both sides of the bottom end of the rectangular groove, realizing double locking of the telescopic cylinder 6, preventing shaking due to external force collision, etc., and ensuring accurate projection of the projected image. When unlocking later, manually pull back the pull plate 12 to overcome the second spring force and make the locking pin exit from the locking hole, restoring normal height adjustment operation.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multimedia teaching projection device for interior design, comprising a mounting plate (1), a fixing cylinder (2), and a projector (3), characterized in that: The mounting plate (1) has a horizontal sliding component on its bottom surface, the fixed cylinder (2) has a fixed plate on its top surface, the fixed cylinder (2) has a telescopic cylinder (6) that slides inside the fixed cylinder (2), the fixed cylinder (2) has a lifting component inside the fixed cylinder (2), the fixed component is provided on one side of the bottom of the outer wall of the fixed cylinder (2), the bottom end of the telescopic cylinder (6) is fixedly connected to a fixed plate (4), multiple sets of fixing bolts are passed through the fixed plate (4) and connected to the projector (3) for installation, a rectangular groove is opened on one side of the fixed cylinder (2), and a locking plate is protruding at the top of the telescopic cylinder (6) located in the rectangular groove.

2. The multimedia teaching projection device for interior design as described in claim 1, characterized in that: The lateral sliding assembly includes a drive motor (14) installed on the outer wall of one end of the mounting plate (1). An I-shaped sliding groove is provided on the inner bottom surface of the mounting plate (1). A first lead screw (15) is inserted in the I-shaped sliding groove. One end of the first lead screw (15) is coaxially fixed to the drive motor (14). A first slider (5) is slidably provided on the first lead screw (15). Multiple sets of mounting bolts are inserted between the bottom surface of the first slider (5) and the fixing plate.

3. The multimedia teaching projection device for interior design as described in claim 2, characterized in that: The first slider (5) is inverted T-shaped. Multiple sets of pulleys are symmetrically arranged on both sides of the upper end of the outer wall of the first slider (5). The I-shaped sliding groove is provided with a pulley guide rail at the pulley.

4. The multimedia teaching projection device for interior design as described in claim 3, characterized in that: The lifting assembly includes a second lead screw (10) rotatably mounted at the center of the top surface inside the fixed cylinder (2). A large gear (13) is coaxially fixed to the upper end of the second lead screw (10). A small gear is meshed on one side of the large gear (13). A servo motor is coaxially fixed to the small gear at one location on the top surface inside the fixed cylinder (2).

5. The multimedia teaching projection device for interior design as described in claim 4, characterized in that: The fixing component includes a limiting block (7) inserted at the bottom of one side of the outer wall of the fixing cylinder (2). There are two limiting blocks (7). Multiple first springs are fixed between the two limiting blocks (7). A pull rod (8) is fixed on one of the two limiting blocks (7) that is closer to the outer wall of the fixing cylinder (2). Multiple limiting holes (11) corresponding to the limiting blocks (7) are equally spaced on the outer wall of the telescopic cylinder (6).

6. The multimedia teaching projection device for interior design as described in claim 5, characterized in that: Two dovetail guide blocks (9) are symmetrically arranged on both sides of the bottom of the inner wall of the fixed cylinder (2). Two locking holes are symmetrically opened on both sides of the bottom of the rectangular groove. Sliding grooves are symmetrically opened at both ends of the top surface of the locking plate. A pull plate (12) is slidably arranged on the sliding groove. A locking pin is fixedly connected to one side of the pull plate (12). A second spring is fixedly connected to the other side of the pull plate (12). Round holes for extending the locking pin are opened on both ends of the locking plate.

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