Teaching projector

Abstract

The utility model relates to the technical field of projectors, in particular to a teaching projector which comprises a rectangular projector, notches are oppositely formed in the side walls of the upper end of the projector, concave strips are detachably installed on the inner sides of the notches, screw holes are formed in the left side wall and the right side wall of the lower end of the projector, and the left side wall and the right side wall of the projector are detachably installed on the concave strips. The inner side of the screw hole is provided with a stud, the front end wall, close to the opening, of the projector is provided with a scale mark used for reading the displacement distance of the stud, the bottom of the stud is provided with supporting plates which are symmetrical left and right along the projector, and the interior of each supporting plate is vertically provided with a screw opening in a penetrating mode, and the stud is connected with the screw opening in a penetrating mode. According to the utility model, the projector is provided with the screw hole, the support plate with the screw mouth and the matched stud, so that the projector has three support modes and better application requirements, and the design of the opening and the scale marks is matched with the observation of the position of the stud, so that the regulation and control accuracy of the stud is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a teaching projector. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. When teaching, a projector is generally used to project videos for teaching demonstrations.

[0003] When the projector is in use, it is placed on the desktop for projection. Since the bottom surface of the projector is mostly set to be flat, after being supported, the projector is directly facing the projection screen, and the projection angle is limited. When the height difference between the desktop and the projection screen is large, the projection effect will inevitably be very poor. Utility Model Content

[0004] The purpose of the utility model is to provide a teaching projector.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A teaching projector includes a rectangular projector, wherein the upper side walls of the projector are relatively provided with recesses, and recessed strips are detachably installed inside the recesses. Screw holes are provided on the left and right side walls of the lower end of the projector, and studs are installed inside the screw holes. A scale mark for reading the displacement distance of the stud is provided on the front end wall of the projector near the opening. Support plates symmetrically arranged along the left and right sides of the projector are installed at the bottom of the studs, and a screw hole for the studs to pass through is vertically penetrated inside the support plates.

[0007] Preferably, the notch of the projector is engaged with a concave strip, which is made of rubber.

[0008] Preferably, there are four of each of the screw hole, stud and screw mouth, and one stud is used in pairs with one screw mouth and one screw hole.

[0009] Preferably, the screw port is threadedly connected to the stud, and the stud is used to assemble the support plate and the projector, and the side wall of the projector is tightly fitted and movable with the side wall of the support plate.

[0010] Preferably, the projector is threadedly connected to the stud through a screw hole. When the stud is rotated, it moves along the axis of the screw hole, causing the stud to protrude from the bottom of the support plate to support the projector. After the stud is screwed into the screw mouth, the projector is supported by the support plate.

[0011] Preferably, two support plates are provided, the support plates are in an L-shape, and the bottom end wall of the support plates is flat.

[0012] The utility model has at least the following beneficial effects:

[0013] 1. The notch on the end wall of the projector can be snapped onto a rubber strip to cushion and protect the side of the projector to prevent damage caused by falling impact;

[0014] 2. Screw holes are opened on the projector, and a support plate with screw holes is set, which is combined with studs to enable the projector to have three support methods, which is better for application needs. The design of openings and scale marks, combined with observing the position of the studs, allows for higher precision in stud adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the present utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of a notch viewed from above;

[0018] Figure 3 for Figure 1 Schematic diagram of the screw mouth front view;

[0019] Figure 4 for Figure 1 A magnified schematic diagram of .

[0020] In the figure: 1. Projector; 2. Notch; 3. Concave strip; 4. Screw hole; 5. Stud; 6. Opening; 7. Scale mark; 8. Support plate; 9. Screw mouth. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See also Figure 1-4 , the utility model provides a technical solution of a teaching projector:

[0023] like Figure 1-4 As shown, a teaching projector includes a rectangular projector 1, a notch 2 is provided on the upper side wall of the projector 1, and a concave strip 3 is detachably installed inside the notch 2;

[0024] like Figure 1 and Figure 2 As shown, the recess 2 of the projector 1 is engaged with the recessed strip 3, which is made of rubber and is easy to remove and install from the recess 2. The recessed strip 3 of the concave rubber material is used to cushion and protect the side surface of the projector 1, preventing the projector 1 from falling to the ground and being damaged by the impact during transportation.

[0025] like Figure 1 As shown, screw holes 4 are provided on the left and right side walls of the lower end of the projector 1, and studs 5 are installed inside the screw holes 4;

[0026] like Figure 1 、 Figure 2 and Figure 3 As shown, there are four screw holes 4, four studs 5, and four screw openings 9, and one stud 5 is used in pairs with one screw opening 9 and one screw hole 4;

[0027] like Figure 1 、 Figure 3 and Figure 4 The projector 1 is shown with a scale mark 7 on the front wall near the opening 6 for reading the displacement distance of the stud 5. The bottom of the stud 5 is mounted with a support plate 8 symmetrically arranged along the left and right sides of the projector 1. The support plate 8 has a screw hole 9 vertically extending through the interior thereof for the stud 5 to pass through.

[0028] like Figure 1 、 Figure 2 and Figure 4 As shown, the screw hole 9 is threadedly connected to the stud 5, and the stud 5 is used to assemble the support plate 8 and the projector 1. The side wall of the projector 1 is tightly fitted with the side wall of the support plate 8. There are two support plates 8. The support plates 8 are in an L-shaped shape, and the bottom end wall of the support plate 8 is flat.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the projector 1 is threadedly connected to the stud 5 through the screw hole 4. By rotating the stud 5, the stud 5 moves along the axial direction of the screw hole 4, so that the stud 5 protrudes from the bottom of the support plate 8 to support the projector 1. After the stud 5 is screwed into the screw mouth 9, the projector 1 is supported by the support plate 8.

[0030] Working principle: When in use, the notch 2 is clamped with the concave strip 3 to cushion and protect the side of the projector 1. The projector 1 has three tooling states:

[0031] First, the bottom wall of the projector 1 and the top wall of the support plate 8 can be directly pressed against each other, and the stud 5 is inserted along the screw mouth 9 and the screw hole 4 to connect the projector 1 and the support plate 8 together. At this time, the projector 1 is directly supported by the support plate 8, which is simple and convenient to use.

[0032] Furthermore, the bottom wall of the projector 1 and the support plate 8 can be directly spaced apart by a distance that allows the stud 5 to penetrate along the screw mouth 9 and the screw hole 4, so that the projector 1 and the support plate 8 can be connected together by the stud 5, and there is a certain distance between the projector 1 and the support plate 8. In this case, when the projector 1 is directly supported by the support plate 8, the bottom end surface of the projector 1 is hollowed out to facilitate heat dissipation from the bottom of the projector 1, and at the same time, the height of the projector 1 is raised, making it convenient for the projector 1 to adapt to a slightly higher projection screen for projection use;

[0033] Finally, you can choose to use or not use the support plate 8, rotate the stud 5 so that the stud 5 protrudes from the bottom of the projector 1 or protrudes from the bottom of the support plate 8. At this time, the projector 1 is supported by the stud 5, and the positions of the four studs 5 during rotation and displacement are controllable and adjustable. The height difference formed between the four studs 5 allows the projector 1 to tilt when supported by the stud 5. At this time, the projector 1 uses the inclination angle with the supporting desktop to achieve a higher projection height to adapt to a projection screen at a higher or lower position. The projection is simpler to adjust and there is no need to set up a complex support bracket at the bottom of the projector 1. When adjusting the stud 5, the stud 5 is displaced along the axis of the screw hole 4. The opening 6 in the front area of ​​the screw hole 4 is designed so that the user can refer to the scale mark 7 to observe the displacement distance of the stud 5, which is more accurate when adjusting the stud 5 to change the inclination angle of the projector 1.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching projector, comprising a rectangular projector (1), characterized in that: The projector (1) has recesses (2) formed on the side walls of the upper end thereof, and a recessed strip (3) is detachably mounted on the inner side of the recess (2). The left and right side walls of the lower end of the projector (1) are both provided with screw holes (4), and studs (5) are mounted on the inner sides of the screw holes (4). A scale mark (7) for reading the displacement distance of the stud (5) is formed on the front end wall of the projector (1) near the opening (6). A support plate (8) symmetrically mounted on the left and right sides of the projector (1) is mounted on the bottom of the stud (5). A screw hole (9) for the stud (5) to pass through is vertically penetrated inside the support plate (8).

2. A teaching projector according to claim 1, characterized in that: The notch (2) of the projector (1) is engaged with a concave strip (3), and the concave strip (3) is made of rubber.

3. A teaching projector according to claim 1, characterized in that: There are four screw holes (4), four studs (5) and four screw openings (9), and one stud (5) is used in pairs with one screw opening (9) and one screw hole (4).

4. A teaching projector according to claim 1, characterized in that: The screw port (9) is threadedly connected to the stud (5), and the stud (5) is used to assemble the support plate (8) and the projector (1). The side wall of the projector (1) and the side wall of the support plate (8) are closely fitted and movable.

5. A teaching projector according to claim 1, characterized in that: The projector (1) is threadedly connected to the stud (5) through the screw hole (4). When the stud (5) is rotated, the stud (5) is displaced along the axial direction of the screw hole (4), so that the stud (5) protrudes from the bottom of the support plate (8) to support the projector (1). After the stud (5) is screwed into the screw hole (9), the projector (1) is supported by the support plate (8).

6. A teaching projector according to claim 1, characterized in that: There are two support plates (8), the support plates (8) are in an L-shaped shape, and the bottom end wall of the support plates (8) is flat.

Images