Two-sided sounding wall map

Abstract

The utility model discloses a double-sided sounding wall chart, which relates to the technical field of wall charts and comprises a chart board and a sounder connected with the chart board, point pressing areas are arranged on the front side and the back side of the chart board, and point pressing circuits corresponding to the point pressing areas are arranged in the chart board. The sounder comprises a shell, a circuit board and a loudspeaker, the circuit board and the loudspeaker are arranged in the shell, a loudspeaking hole is formed in the side, corresponding to the front face of the drawing board, of the shell, and a first anti-blocking area and a second anti-blocking area are formed in the side, provided with the loudspeaking hole, of the shell; the loudspeaking hole is arranged on the first anti-blocking area, thereby effectively ensuring smooth sounding when the back side is used, reducing the difference between the sounding when the back side of the double-side sounding wall map is used and the sounding when the front side of the double-side sounding wall map is used, and avoiding the poor integral point reading learning effect caused by the overlarge sounding difference.

Description

Technical Field

[0001] The utility model relates to the technical field of wall charts, in particular to a double-sided sound-emitting wall chart. Background Art

[0002] The double-sided sound-emitting wall chart is an educational auxiliary product that can perform sound emission by pressing points on the front and back sides of the wall chart board. The current double-sided sound-emitting wall charts have structures mostly like the double-sided sound-emitting wall chart proposed in the Chinese invention "Double-sided Sound-emitting Wall Chart, Implementation Method, Double-sided Button Implementation Circuit and Method" with the publication number CN104240589B, including front and back use layers, and an installation box with a circuit board with a control unit and a speaker installed inside. The front and back use layers have arbitrary front and back buttons. A part of the front and back use layers is inserted into the installation box from the lower opening of the installation box to realize the electrical connection between the circuit board in the installation box and the front and back use layers.

[0003] To better correspond to the sound output of the speaker, the sound holes are usually arranged on the side of the installation box that is the same as the board surface of the wall chart board (front and back use layers), so that a larger area can be used to set the sound holes while ensuring that the overall thickness of the installation box is small.

[0004] However, when this double-sided sound-emitting wall chart is in use, there are two situations: when it is used on the front side, the front side of the sound emitter (with sound holes) is on the outside, and when it is used on the back side, the front side of the sound emitter is close to the wall or the tabletop. When the front side of the sound emitter is close to the wall or the tabletop, the sound holes on the front side of the sound emitter will be blocked by the wall or the tabletop, resulting in the sound output when the double-sided sound-emitting wall chart is used on the back side being much weaker than that when it is used on the front side, which needs to be improved. Summary of the Utility Model

[0005] The utility model aims to provide a technical solution that can solve the above problems to overcome the above deficiencies.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A double-sided sound-emitting wall chart includes a wall chart board and a sound emitter connected to the wall chart board. Pressing areas are arranged on the front and back surfaces of the wall chart board, and a pressing circuit corresponding to the pressing areas is arranged inside the wall chart board; the sound emitter includes a housing, a circuit board and a speaker arranged inside the housing. A sound hole is formed on the side of the housing corresponding to the front surface of the wall chart board, and a first anti-blocking area and a second anti-blocking area are formed on the side of the housing with the sound hole; the sound hole is arranged on the first anti-blocking area.

[0007] As a further solution of the utility model: An anti-blocking boss is formed in an outward convex shape on the first anti-blocking area, an anti-blocking groove is formed in an inward concave shape on the second anti-blocking area, and the sound hole is formed on the inner wall of the anti-blocking groove to communicate the anti-blocking groove with the inside of the housing.

[0008] As a further solution of the present utility model: a first connection terminal is provided on the top side of the drawing board; an installation opening is formed on the bottom side of the housing, and a second connection terminal corresponding to the installation opening is provided inside the housing. When the top side of the drawing board is installed in the installation opening, the first connection terminal is electrically connected to the second connection terminal.

[0009] As a further solution of the present utility model: a positioning portion is formed by outward convex molding on the front and / or back surface of the top of the drawing board, and a positioning groove corresponding to the positioning portion is formed on the housing, and the positioning groove communicates with the installation opening.

[0010] As a further solution of the present utility model: the housing includes a front housing and a back housing, and both the installation opening and the positioning groove are located at the joint of the front housing and the back housing.

[0011] As a further solution of the present utility model: a connecting member is formed at a position near the orifice of the sound hole inside the housing, and an anti-blocking and resisting member corresponding to the orifice of the sound hole is formed on the side of the connecting member away from the sound hole. A lateral sound passing hole for communicating the sound hole with the inside of the housing is formed between the anti-blocking and resisting member and the edge of the orifice of the sound hole.

[0012] As a further solution of the present utility model: the pressing circuit is a carbon film pressing circuit.

[0013] Compared with the prior art, the beneficial effects of the present technical solution are as follows: when the double-sided sounding wall chart is used on the back side, the anti-blocking convex platform on the first anti-blocking area forms a first contact point with the wall surface or the table top, so that a supporting channel suitable for the sound of the speaker to smoothly pass through is formed between the second anti-blocking area and the wall surface or the table top; when the double-sided sounding wall chart is tilted under force, a part of the outer periphery of the anti-blocking groove forms a second contact point with the wall surface or the table top, preventing the sound hole from being covered, thereby effectively ensuring smooth sound output when used on the back side, reducing the difference in sound output between the back side and the front side when the double-sided sounding wall chart is used, and avoiding poor overall point reading and learning effects due to excessive difference in sound output.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1It is a front view of the structure of the present utility model, which shows the internal carbon film push-button circuit;

[0017] Figure 2 It is a back view of the structure of the present utility model, which shows the internal carbon film push-button circuit;

[0018] Figure 3 It is a three-dimensional view of the structure of the generator in the present utility model;

[0019] Figure 4 It is a cross-sectional view of the structure of the front shell;

[0020] Figure 5 It is Figure 4 a schematic enlarged view of the local structure at A in

[0021] Figure 6 It is the circuit schematic diagram of the present utility model;

[0022] Figure 7 It is a front view of the present utility model.

[0023] The corresponding reference numerals in the drawings are explained as follows:

[0024] Panel - 1, housing - 2, speaker - 3, sound hole - 4, mounting opening - 5, positioning groove - 6, connecting member - 7, anti-blocking and resisting member - 8, lateral sound passage hole - 9,

[0025] Front housing - 21, back housing - 22,

[0026] Push-button area - 101, positioning portion - 102, push-button circuit - 103,

[0027] First anti-blocking area - 201, second anti-blocking area - 202,

[0028] Anti-blocking boss - 2011,

[0029] Anti-blocking groove - 2021. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1-7, A double-sided sounding wall chart, comprising a chart board 1 and a sound generator connected to the chart board 1. Pressing areas 101 are provided on the front and back surfaces of the chart board 1, and a pressing circuit 103 corresponding to the pressing areas 101 is provided inside the chart board 1. The sound generator includes a housing 2, a circuit board and a speaker 3 arranged inside the housing 2, and a sound hole 4 is formed on one side of the housing 2 corresponding to the front surface of the chart board 1. Press the corresponding pressing area 101 on the chart board 1, so that the corresponding pressing switch of the pressing circuit 103 is triggered, and the control module of the circuit board obtains the corresponding trigger signal, thereby controlling the speaker 3 to perform corresponding information broadcast.

[0032] On one side of the housing 2 with the sound hole, a first anti-blocking area 201 and a second anti-blocking area 202 are formed. An anti-blocking boss 2011 is formed in a convex shape on the first anti-blocking area 201, and an anti-blocking groove 2021 is formed in a concave shape on the second anti-blocking area 202. The sound hole 4 is formed on the inner wall of the anti-blocking groove 2021 and communicates the anti-blocking groove 2021 with the inside of the housing 2.

[0033] As Figure 1 shown, the appearance of the housing 2 is in the shape of a small car, and most of the chart board 1 is located below the sound generator; on the housing 2, the second anti-blocking area 202 is located above the first anti-blocking area 201.

[0034] When the double-sided sounding wall chart is used on the back, the anti-blocking boss 2011 on the first anti-blocking area 201 forms a first contact point with the wall or the tabletop, so that a support channel suitable for the sound of the speaker to pass through smoothly is formed between the second anti-blocking area 202 and the wall or the tabletop; when the double-sided sounding wall chart is tilted under force, a part of the outer peripheral edge of the anti-blocking groove 2021 (usually the outer peripheral edge away from the second anti-blocking area) forms a second contact point with the wall or the tabletop, preventing the sound hole 4 from being covered, thereby effectively ensuring smooth sound output when used on the back, reducing the difference in sound output between the back and the front of the double-sided sounding wall chart, and avoiding poor overall point-reading learning effects due to excessive difference in sound output.

[0035] In some embodiments, the pressing circuit 103 is a carbon film pressing circuit.

[0036] In some embodiments, a first connection terminal is provided on the top side of the chart board 1. An installation opening 5 is formed on the bottom side of the housing 2, and a second connection terminal corresponding to the installation opening 5 is provided inside the housing 2. When the top side of the chart board 1 is installed in the installation opening 5, the first connection terminal is electrically connected to the second connection terminal.

[0037] Preferably, a positioning portion 102 is formed in a convex shape on the front and / or back of the top of the chart board 1, and a positioning groove 6 corresponding to the positioning portion 102 is formed on the housing 2, and the positioning groove 6 communicates with the installation opening 5.

[0038] As Figure 3As shown, more preferably, the housing 2 includes a front housing 21 and a rear housing 22, and both the mounting opening 5 and the positioning groove 6 are located at the joint of the front housing 21 and the rear housing 22.

[0039] During installation, first place the part with the positioning portion 102 on the drawing board 1 between the front housing 21 and the rear housing 22, make the positioning portion 102 correspond to the positioning groove 6, and electrically connect the first connection terminal and the second connection terminal. Then join the front housing 21 and the rear housing 22 so that the front housing 21 and the rear housing 22 jointly fix the drawing board 1. The way of joining the front housing 21 and the rear housing 22 can be screw connection, adhesive bonding, etc.

[0040] In this embodiment, a connecting member 7 is formed at a position near the orifice of the sound hole in the housing 2. On the side of the connecting member 7 away from the sound hole, an anti-blocking and resisting member 8 corresponding to the orifice of the sound hole is formed. A lateral sound passing hole 9 for communicating the sound hole 4 with the inside of the housing 2 is formed between the anti-blocking and resisting member 8 and the edge of the orifice of the sound hole 4.

[0041] On the one hand, while ensuring smooth sound output, the anti-blocking and resisting member 8 makes it difficult for foreign objects outside to pass through the sound hole 4 and enter the housing 2, thus affecting the use of the wall chart. On the other hand, the anti-blocking and resisting member 8 constitutes a light shield from the outside of the housing 2 towards the inside of the housing 2, effectively avoiding the situation that children curiously block the hole or insects crawl into the housing 2 through the sound hole 4.

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A double-sided sound-emitting wall chart, characterized in that, It includes a drawing board and a sound generator connected to the drawing board. Pressing areas are provided on the front and back of the drawing board, and a pressing circuit corresponding to the pressing areas is provided inside the drawing board. The sound generator includes a housing, a circuit board and a speaker provided inside the housing, and a sound hole is formed on one side of the housing corresponding to the front of the drawing board.

2. The double-sided sound-producing wall chart according to claim 1, wherein A first anti-blocking area and a second anti-blocking area are formed on the side of the housing with the sound hole; the sound hole is provided on the first anti-blocking area.

3. The double-sided sound-emitting wall chart according to claim 2, wherein, An anti-blocking boss is formed by outward convexity on the first anti-blocking area, an anti-blocking groove is formed by inward concavity on the second anti-blocking area, and the sound hole is formed on the inner wall of the anti-blocking groove to communicate the anti-blocking groove with the inside of the housing.

4. The double-sided sounding wall chart according to claim 3, characterized in that A first connection terminal is provided on the top side of the drawing board. An installation opening is formed on the bottom side of the housing, and a second connection terminal corresponding to the installation opening is provided inside the housing. When the top side of the drawing board is installed in the installation opening, the first connection terminal is electrically connected to the second connection terminal.

5. The double-sided sound-producing wall chart according to claim 4, wherein A positioning portion is formed by outward convexity on the front and / or back of the top of the drawing board, and a positioning groove corresponding to the positioning portion is formed on the housing, and the positioning groove communicates with the installation opening.

6. The double-sided sound-emitting wall chart according to claim 5, characterized in that, The housing includes a front housing and a back housing, and both the installation opening and the positioning groove are located at the joint of the front housing and the back housing.

7. The double-sided sound-emitting wall chart according to any one of claims 1-6, characterized in that A connecting member is formed at a position near the orifice of the sound hole inside the housing, and an anti-blocking resisting member corresponding to the orifice of the sound hole is formed on the side of the connecting member away from the sound hole, and a lateral sound passing hole for communicating the sound hole with the inside of the housing is formed between the anti-blocking resisting member and the edge of the orifice of the sound hole.

8. The double-sided sound-emitting wall chart according to any one of claims 1-6, characterized in that, The pressing circuit is a carbon film pressing circuit.

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