Magnetic induction device for push-pull plate position of push-pull type intelligent blackboard

Abstract

The utility model relates to the technical field of teaching equipment, in particular to a magnetic induction device for the position of a push-pull board of a push-pull type intelligent blackboard, which comprises a magnetic inductor and a permanent magnet used for being inducted by the magnetic inductor, one of the magnetic inductor and the permanent magnet is installed on a main frame of the intelligent blackboard, and the other one of the magnetic inductor and the permanent magnet is installed on the main frame of the intelligent blackboard. Wherein the other one is mounted on a push-and-pull plate of the intelligent blackboard and is arranged on the upper edge or the lower edge of the push-and-pull plate. The technical problems that in the prior art, when a photoelectric sensing device moves up and down in the vertical direction of a push-pull plate, the sensing device loses efficacy, and the push-pull plate cannot continue to move are solved.

Description

Technical Field

[0001] This utility model relates to the field of teaching equipment technology, specifically to a magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard. Background Technology

[0002] The smart blackboard includes a touch screen in the middle and sliding plates at both ends of the screen. Since the touch screen may malfunction or become unresponsive when the sliding plates cover it during movement, a sensing device needs to be installed between the sliding plates and the main frame of the smart blackboard to detect the position of the sliding plates. After the host computer of the smart blackboard receives the signal that the sliding plates cover the touch screen, it can control the touch screen to enter the lock screen state to avoid touch screen malfunction or failure.

[0003] However, the sensing device in the existing technology is a photoelectric sensing device, which includes a U-shaped component on the main frame of the smart blackboard and a sensing strip fixed on the push-pull plate. The sensing strip moves in the U-shaped groove of the U-shaped component. The only opening of the U-shaped groove is in the horizontal direction. When the sensing strip is engaged in the U-shaped groove, the distance between the sensing strip and the inner wall of the U-shaped groove is very small. As the usage period of the smart blackboard is extended, the push-pull plate will sink relative to the main frame. Once the plate sinks, the sensing strip on the other side of the push-pull plate will rise accordingly. The rising sensing strip will hit the U-shaped component, causing the sensing device to fail. At the same time, the push-pull plate can no longer be pushed or pulled. Summary of the Invention

[0004] In order to solve the technical problem that the photoelectric sensing device fails and the sliding plate cannot continue to move when it moves vertically in the vertical direction of the sliding plate in the prior art, this application proposes a magnetic sensing device for the position of the sliding plate of a sliding smart blackboard, which solves the above-mentioned technical problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard, including a magnetic sensor and a permanent magnet for being sensed by the magnetic sensor. One of the magnetic sensor and the permanent magnet is mounted on the main frame of the smart blackboard, and the other is mounted on the sliding plate of the smart blackboard and arranged at the upper or lower edge of the sliding plate.

[0007] Furthermore, the push-pull plate includes a push-pull sub-plate outer frame located at the top. The push-pull sub-plate outer frame is slidably fitted onto the top of the main frame along the length direction. A connecting portion extends from the front of the main frame along one side of the push-pull sub-plate outer frame along the width direction and is connected to the writing board body. The portion of the push-pull sub-plate outer frame that tilts up as the writing board body sinks along the other side along the width direction forms a mounting portion. One of the magnetic sensor or the permanent magnet is mounted on the mounting portion, and the other is mounted on the top of the main frame.

[0008] Furthermore, the mounting portion of the outer frame of the push-pull sub-plate is formed by a mounting bracket, and the mounting bracket is detachably connected to the main body of the outer frame of the push-pull sub-plate.

[0009] Furthermore, the mounting bracket includes a top plate, and L-shaped flanges are symmetrically formed on both sides of the top plate. The space enclosed by the top plate and the two L-shaped flanges forms an installation space.

[0010] Furthermore, the permanent magnet is installed within the mounting space of the mounting bracket and is detachably connected to the top plate.

[0011] Furthermore, the mounting bracket is made of a metal material that can be attracted by the permanent magnet, which is attracted to the top plate.

[0012] Furthermore, the mounting bracket also includes a connecting edge, which is formed on the outer side of one of the L-shaped stop edges near the main body of the push-pull sub-plate outer frame, and the connecting edge is horizontally arranged. The mounting bracket is screwed to the main body of the push-pull sub-plate outer frame through the connecting edge.

[0013] Furthermore, the magnetic sensor is electrically connected to the host computer of the smart blackboard via a wire.

[0014] Furthermore, a touch screen is mounted on the front of the main frame, and two sets of push-pull plates are movably configured on both sides of the touch screen.

[0015] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0016] This utility model discloses a magnetic sensing device for the sliding panel position of a push-pull smart blackboard. It includes a magnetic sensor and a permanent magnet that emits a magnetic field that is sensed by the magnetic sensor. One of the magnetic sensor and the permanent magnet is mounted on the main frame of the smart blackboard, and the other is mounted on the push-pull panel, positioned at the upper or lower edge of the panel. Firstly, the magnetic sensor senses the magnetic field emitted by the permanent magnet, unlike photoelectric sensing which requires point-to-point sensing. Even if the relative position and distance between the magnetic sensor and the permanent magnet change as the push-pull panel moves up or down, the magnetic sensor can still detect the permanent magnet and will not fail. Secondly, since one of the magnetic sensors or the permanent magnet is fixed to the main frame, and the distance between the permanent magnet and the magnetic sensor only increases as the writing board moves up or down, they cannot block each other. Therefore, the push-pull panel cannot be blocked by the magnetic sensor or permanent magnet on the main frame and thus unable to move. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the magnetic induction device for the sliding plate position of a push-pull smart blackboard according to this utility model.

[0018] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0019] Figure 3 This is a schematic diagram from another perspective of the magnetic sensing device for the sliding plate position of the push-pull smart blackboard of this utility model.

[0020] Figure 4 for Figure 3 A magnified view of part B in the middle section;

[0021] Figure 5 This is a schematic diagram of the permanent magnet of this utility model installed in the mounting frame;

[0022] Figure 6 This is a schematic diagram of the mounting bracket of this utility model.

[0023] In this utility model: 1-magnetic sensor; 2-permanent magnet; 3-main frame; 4-push-pull plate; 41-writing board body; 42-push-pull sub-plate outer frame; 421-mounting bracket; 4211-top plate; 4212-L-shaped stop edge; 4213-connecting edge; 5-touch screen. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] like Figure 1-6 As shown in a specific embodiment of this application, the magnetic sensing device for the sliding plate position of the sliding smart blackboard of this utility model includes a magnetic sensor 1 and a permanent magnet 2. The magnetic sensor 1 is installed on the back or top of the main frame 3 of the smart blackboard to sense the permanent magnet 2. The permanent magnet 2 is installed on the sliding plate 4 of the smart blackboard and arranged on the upper or lower edge of the sliding plate 4. Preferably, the permanent magnet 2 is arranged on the back or top of the main frame 3, which rises and falls as the writing board body 41 of the sliding plate sinks. The permanent magnet 2 is located above the magnetic sensor 1.

[0026] In one specific embodiment of this utility model, the push-pull plate 4 includes a push-pull sub-plate outer frame 42 located at the top. The push-pull sub-plate outer frame 42 is elongated and slides along the length direction to fit on the top of the main frame 3. A connecting part extends from the front of the main frame 3 along one side of the push-pull sub-plate outer frame 42 along the width direction and is connected to the writing board body 41. A mounting part extends from the back of the main frame 3 along the other side of the push-pull sub-plate outer frame 42 along the width direction and rises and falls as the writing board body 41 sinks. A permanent magnet 2 is mounted on the mounting part. Correspondingly, a magnetic sensor 1 is arranged on the top of the main frame 3.

[0027] In a preferred embodiment of the present invention, the mounting portion of the push-pull sub-plate outer frame 42 is formed by a mounting bracket 421, and the mounting bracket 421 is detachably connected to the main body of the push-pull sub-plate outer frame 42.

[0028] Furthermore, the mounting bracket 421 includes a top plate 4211, and L-shaped baffles 4212 are symmetrically formed on both sides of the top plate 4211. The space enclosed by the top plate 4211 and the two L-shaped baffles 4212 forms an installation space for installing the permanent magnet 2. The installation space opens downwards, and the permanent magnet 2 in the installation space can be limited by the L-shaped baffles 4212 to prevent the permanent magnet 2 from falling.

[0029] Furthermore, the permanent magnet 2 is detachably mounted on the top plate 4211.

[0030] Furthermore, the mounting bracket 421 is made of a metal material that can be attracted by the permanent magnet 2, which is attached to the top plate 4211. The material of the top plate 4211 is preferably iron.

[0031] Furthermore, the mounting bracket 421 also includes a connecting edge 4213, which is formed on the outer side of one of the L-shaped baffles 4212 near the main body of the push-pull sub-plate outer frame 42, and the connecting edge 4213 is horizontally arranged. The mounting bracket 421 is screwed to the main body of the push-pull sub-plate outer frame 42 through the connecting edge 4213.

[0032] In a preferred embodiment of this utility model, the magnetic sensor 1 is electrically connected to the host computer of the smart blackboard via a wire.

[0033] In one specific embodiment of this utility model, a touch screen 5 is installed on the front of the main frame 3, and two sets of push-pull plates 4 are movably arranged on both sides of the touch screen 5. After the magnetic sensor 1 senses the permanent magnet 2 on the push-pull plate 4, it feeds the signal back to the host computer. After receiving the signal, the host computer knows that the push-pull plate 4 has covered or is about to cover the touch screen 5, and then issues an instruction to lock the touch screen 5 to prevent the touch screen 5 from jumping or malfunctioning.

[0034] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard, characterized in that, It includes a magnetic sensor (1) and a permanent magnet (2) for being sensed by the magnetic sensor (1), one of the magnetic sensor (1) and the permanent magnet (2) is mounted on the main frame (3) of the smart blackboard, and the other is mounted on the push-pull plate (4) of the smart blackboard and arranged on the upper or lower edge of the push-pull plate (4).

2. The magnetic sensing device for position of sliding board of sliding smart blackboard according to claim 1, wherein, The push-pull plate (4) includes a writing board body (41) and a push-pull sub-plate outer frame (42) located on top of the writing board body (41). The push-pull sub-plate outer frame (42) slides along the length direction and fits on the top of the main frame (3). The push-pull sub-plate outer frame (42) extends from the front of the main frame (3) along one side along the width direction to form a connecting part, which is connected to the writing board body (41). The part of the push-pull sub-plate outer frame (42) that rises and falls along the other side along the width direction as the writing board body (41) sinks forms a mounting part. One of the magnetic sensor (1) or the permanent magnet (2) is mounted on the mounting part, and the other is mounted on the top of the main frame (3).

3. The magnetic sensing device for position of sliding board of sliding smart blackboard according to claim 2, characterized in that, The mounting portion of the push-pull sub-plate outer frame (42) is formed by a mounting bracket (421), and the mounting bracket (421) is detachably connected to the main body of the push-pull sub-plate outer frame (42).

4. The magnetic sensing device for position of sliding board of sliding smart blackboard according to claim 3, wherein, The mounting bracket (421) includes a top plate (4211), and L-shaped flanges (4212) are symmetrically formed on both sides of the top plate (4211). The space enclosed by the top plate (4211) and the two L-shaped flanges (4212) forms an installation space.

5. The magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard according to claim 4, characterized in that, The permanent magnet (2) is installed in the mounting space of the mounting bracket (421) and is detachably connected to the top plate (4211).

6. The magnetic sensing device for position of sliding board of sliding smart blackboard according to claim 5, wherein, The mounting bracket (421) is made of a metal material that can be attracted by the permanent magnet (2), which is attached to the top plate (4211).

7. The magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard according to claim 4, characterized in that, The mounting bracket (421) further includes a connecting edge (4213), which is formed on the outer side of one of the L-shaped sidewalls (4212) near the main body of the push-pull sub-plate outer frame (42), and the connecting edge (4213) is horizontally arranged. The mounting bracket (421) is screwed to the main body of the push-pull sub-plate outer frame (42) through the connecting edge (4213).

8. The magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard according to claim 1, characterized in that, The magnetic sensor (1) is electrically connected to the host computer of the smart blackboard via a wire.

9. The magnetic sensing device for the position of the sliding plate of a push-pull smart blackboard according to claim 1, characterized in that, The main frame (3) is equipped with a touch screen (5) on the front, and two sets of push-pull plates (4) are movably arranged on both sides of the touch screen (5).

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