Sound equipment with adjustable playing angle

Abstract

The utility model discloses a sound box with adjustable playing angle, which comprises a box body, the box body comprises a cylinder part, an inner cavity is arranged in the cylinder part, the outer curved surface of the cylinder part is provided with a fixed plate and two sliding plates distributed on the front side and the rear side of the fixed plate, the fixed plate and the sliding plates are respectively provided with a sound production unit, and the sound production units are respectively provided with a loudspeaker. The cylindrical part is provided with a curved surface, the curved surface of the inner cavity is internally provided with two sliding grooves which are communicated outwards, the two sliding plates respectively extend into the two sliding grooves and can slide along the extending directions of the sliding grooves by taking the axis of the cylindrical part as the center, the three sound production units are loaded in the sound production device, and the positions of the sliding plates loaded with the sound production units can be adjusted, so that the sound production device is convenient to use. Therefore, the earphone can be adjusted to produce sound towards a specific direction or produce sound in all directions, and the application range is wide. The pull handle is arranged in the teaching aid, a user can drag the teaching aid conveniently, the user can adjust the position of the sliding plate by rotating the pull handle, operation is convenient, and the learning cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, in particular to an audio with an adjustable playing angle. Background Art

[0002] An audio is a device that converts audio signals into sounds, and it mainly consists of parts such as speakers, boxes, and circuits.

[0003] In the usage scenario of teaching on a sports field, if a teacher needs to broadcast to a student phalanx through an audio, the teacher needs to manually drag the audio to a predetermined position and then make the speakers in the audio face the student phalanx to achieve a clearer broadcast effect.

[0004] However, in fact, when a teacher is conducting teaching activities, the number of students in the phalanx is uncertain, and when the student phalanx needs to move, it usually needs to go around the audio. At this time, the students located behind the audio are difficult to hear the broadcast clearly. As shown in a mobile audio disclosed in the patent application No. CN105120382A, the existing audio that can only emit sound in one direction is not very applicable, so it needs to be improved. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an audio with an adjustable playing angle to solve the problems that the existing audio can only emit sound in one direction and has a small applicable range.

[0006] The utility model provides the following technical solution: an audio with an adjustable playing angle, including a box body. The box body includes a cylindrical part, and an inner cavity is provided in the cylindrical part. A fixing plate and two sliding plates distributed on the front and rear sides of the fixing plate are provided on the outer curved surface of the cylindrical part. Sound generating units are respectively installed on the fixing plate and the sliding plates. Two through grooves are provided in the curved surface of the inner cavity and penetrate outward. The two sliding plates respectively extend into the two through grooves and can slide along the extending direction of the through grooves with the axis of the cylindrical part as the center. A positioning component is provided in the cylindrical part for controlling the symmetrical movement of the two sliding plates back and forth.

[0007] A pulling handle is installed on the cylindrical part.

[0008] Preferably, the box body further includes an upright part, the upright part is connected to the lower end of the cylindrical part, and rollers are installed on the side surface of the upright part.

[0009] Preferably, the positioning component includes two bent rods rotatably connected to the upper side surface of the inner cavity. The two bent rods are distributed front and back, and the lower ends of the bent rods extend to the right. The ends of the two bent rods are respectively connected to the two sliding plates.

[0010] A rotating shaft is also rotatably connected to the upper side surface of the inner cavity. The rotating shaft is connected to one of the bent rods through a friction wheel set, and the rotating shaft is connected to the other bent rod through a synchronous belt. A locking mechanism is further included for controlling the angle of the rotating shaft.

[0011] Preferably, the pulling handle is rotatably connected to the upper side surface of the cylindrical part. The pulling handle includes two vertical rods connected to the cylindrical part and a cross bar connecting the two vertical rods. The locking mechanism includes a pop-up groove provided in the lower side surface of the cross bar, and a pressing plate is connected to the bottom surface of the pop-up groove through a spring. The pressing plate extends to the lower side of the cross bar. A plurality of card slots are provided in the upper side surface of the cylindrical part. The card slots are equiangularly distributed around the rotation axis of the pulling handle, and a card board capable of being inserted into the card slots is fixedly provided on the lower side surface of the pressing plate.

[0012] Preferably, a threaded shaft is also rotatably connected to the cross bar. A knob is installed at the upper end of the threaded shaft, and a block threadedly connected to the threaded shaft is slidably connected up and down in the pop-up groove.

[0013] Preferably, the two sliding grooves are vertically offset, and an arc-shaped plate for shielding the sliding groove is installed at the end of the sliding plate extending into the sliding groove.

[0014] Preferably, the bent rod is inserted into the arc-shaped plate to be connected to the sliding plate, and the bent rod can slide in the arc-shaped plate.

[0015] The utility model provides a sound box with an adjustable playing angle, having the following beneficial effects:

[0016] Three sounding units are loaded in the utility model, and the sliding plate loading the sounding units can adjust its position so that the utility model can be adjusted to sound in a specific direction or sound in all directions, with a wide range of applications;

[0017] A pulling handle is arranged in the utility model, which is convenient for the user to drag, and the user can adjust the position of the sliding plate by rotating the pulling handle, which is convenient for operation and has a low learning cost. Description of the Drawings

[0018] Figure 1 is the external view schematic diagram of the utility model;

[0019] Figure 2 is the front view of the utility model;

[0020] Figure 3 is Figure 2 the structural schematic diagram of A-A in

[0021] Figure 4 is Figure 2 the right view structural schematic diagram inside the pulling handle in

[0022] In the figure:

[0023] 11. Box body; 12. Cylindrical part; 13. Upright part; 14. Roller; 15. Inner cavity; 21. Fixed plate; 22. Sliding plate; 23. Chute; 24. Pull handle; 25. Bent rod; 26. Rotating shaft; 27. Friction wheel set; 50. Clamping plate; 51. Cross bar; 52. Ejecting groove; 53. Pressing plate; 54. Card slot; 55. Vertical rod; 55. Vertical rod; 56. Threaded shaft; 57. Knob; 58. Block; 61. Arc plate; 91. Sound generating unit. Detailed implementation manners

[0024] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Refer to Figures 1 - 4, according to an embodiment of a sound box with adjustable playing angle of the present utility model, it includes a box body 11. The box body 11 includes a cylindrical part 12 and an upright part 13 connected to the lower end of the cylindrical part 12. And a roller 14 is provided on the side surface of the upright part 13. A pull handle 24 is also installed on the cylindrical part 12 to facilitate the user to drive the sound box with adjustable playing angle to move. In addition, an inner cavity 15 is provided inside the cylindrical part 12. A fixed plate 21 and two sliding plates 22 distributed on the front and rear sides of the fixed plate 21 are provided on the outer curved surface of the cylindrical part 12. Sound generating units 91 are respectively installed on the fixed plate 21 and the sliding plates 22. Two through grooves 23 are provided on the curved surface of the inner cavity 15 and penetrate outwards. The two sliding plates 22 respectively extend into the two through grooves 23 and can slide along the extending direction of the through grooves 23 with the axis of the cylindrical part 12 as the center. A positioning component for controlling the front and rear symmetric movement of the two sliding plates 22 is provided inside the cylindrical part 12. The user can control the position of the sliding plates 22 through the positioning component, and further control the orientation of the sound generating units 91 inside the sliding plates 22.

[0029] When the two sliding plates 22 approach the fixed plate 21, the sound box with adjustable playing angle can gather sound in the direction of the sound generating unit 91 inside the fixed plate 21 for broadcasting. When the sliding plates 22 move away from the fixed plate 21, the distances between the three sound generating units 91 are the same, and the sound box with adjustable playing angle can perform 360° broadcasting to the surrounding.

[0030] In this embodiment, the positioning component includes two bent rods 25 rotatably connected to the upper side surface of the inner cavity 15. The two bent rods 25 are distributed front and rear, and the lower ends of the bent rods 25 extend to the right. The ends of the two bent rods 25 are respectively connected to the two sliding plates 22.

[0031] A rotating shaft 26 is also rotatably connected to the upper side surface of the inner cavity 15. The rotating shaft 26 is connected to one of the bent rods 25 through a friction wheel set 27, and the rotating shaft 26 is connected to the other bent rod 25 through a synchronous belt. A locking mechanism for controlling the angle of the rotating shaft 26 is also included. When the rotating shaft 26 rotates, the two bent rods 25 can be driven to rotate through the synchronous belt and the friction wheel set 27. The two bent rods 25 will rotate in opposite directions, so that the two sliding plates 22 move symmetrically front and rear, facilitating the adjustment of the position of the sound generating units 91 on the sliding plates 22.

[0032] In this embodiment, the handle 24 is rotatably connected to the upper side surface of the cylindrical portion 12. The handle 24 includes two vertical rods 55 connected to the cylindrical portion 12 and a cross bar 51 connecting the two vertical rods. The locking mechanism includes a pop-up groove 52 provided in the lower side surface of the cross bar 51, and a pressing plate 53 is connected to the bottom surface of the pop-up groove 52 by a spring. The pressing plate 53 extends to the lower side of the cross bar 51. A plurality of card slots 54 are provided in the upper side surface of the cylindrical portion 12. The card slots 54 are equally angularly distributed around the rotation axis of the handle 24. A card board 50 capable of being inserted into the card slot 54 is fixedly provided on the lower side surface of the pressing plate 53. The upper end of the rotating shaft 26 is fixed to the lower side surface of the cross bar 51. That is, when the user needs to rotate the rotating shaft 26 to control the angle of the sliding plate 22, the user first presses the pressing plate 53 inward. At this time, the pressing plate 53 and the card board 50 move upward, and the card board 50 is separated from the card slot 54. At this time, the user can rotate the handle 24 to rotate the rotating shaft 26. After the sliding plate 22 and the sound generating unit 91 thereon are adjusted to a predetermined position, the user no longer presses the pressing plate 53. At this time, the pressing plate 53 and the card board 50 are pressed downward by the spring and the card board 50 enters another card slot 54. After that, the angle of the handle 24 is locked, that is, the position of the sliding plate 22 is also locked.

[0033] In order to prevent the handle 24 from rotating and shaking when the user pulls the sound device with adjustable playing angle by the handle 24, a threaded shaft 56 is also rotatably connected in the cross bar 51. A knob 57 is installed at the upper end of the threaded shaft 56. A block 58 threadedly connected to the threaded shaft 56 is slidably connected up and down in the pop-up groove 52. When the position of the sliding plate 22 does not need to be adjusted, the user can rotate the knob 57 to move the block 58 to the lowermost side. At this time, the pressing plate 53 is limited and cannot move upward.

[0034] In the second embodiment of the sound device with adjustable playing angle, in order to ensure that the inner cavity 15 is in a closed state, the two sliding grooves 23 are vertically offset (only one sliding groove 23 can be seen in the Figure 3 view, and the other sliding groove 23 is aligned with this Figure 3The chute 23 therein is symmetric front and back and offset up and down), and an arc-shaped plate 61 for closing the inner cavity 15 is installed at the end of the sliding plate 22 extending into the chute 23. Through the arc-shaped plate 61, when the sliding plate 22 is in any position within the chute 23, the chute 23 is in a closed state, preventing the audio signal processing device, battery, etc. connected to the 91 within the inner cavity 15 from being affected by the outside. In this embodiment, the bent rod 25 is inserted into the arc-shaped plate 61 and can slide, so that the rotation of the bent rod 25 that is not coaxial with the cylindrical portion 12 can smoothly drive the arc-shaped plate 61 and the sliding block 22 to rotate around the axis of the cylindrical portion 12.

[0035] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A speaker with adjustable playback angle, comprising a box (11), characterized in that: The box body (11) comprises a cylindrical portion (12), and an inner cavity (15) is provided in the cylindrical portion (12); a fixed plate (21) and two sliding plates (22) distributed on the front and rear sides of the fixed plate (21) are provided on the outer curved surface of the cylindrical portion (12); the fixed plate (21) and the sliding plate (22) are respectively provided with a sound generating unit (91); two sliding grooves (23) extending outward are provided in the curved surface of the inner cavity (15); the two sliding plates (22) respectively extend into the two sliding grooves (23) and can slide along the extending direction of the sliding grooves (23) with the axis of the cylindrical portion (12) as the center; a positioning component for controlling the symmetrical front-back movement of the two sliding plates (22) is provided in the cylindrical portion (12); A pull handle (24) is mounted on the cylindrical portion (12).

2. The speaker with adjustable playback angle according to claim 1, characterized in that: The box body (11) further comprises an upright portion (13), the upright portion (13) being connected to the lower end of the cylindrical portion (12), and a roller (14) being provided on the side surface of the upright portion (13).

3. The speaker with adjustable playback angle according to claim 1, characterized in that: The positioning assembly comprises two curved rods (25) rotatably connected to the upper side of the inner cavity (15), the two curved rods (25) are distributed front and back, and the lower ends of the curved rods (25) extend to the right, and the ends of the two curved rods (25) are respectively connected to the two sliding plates (22); A rotating shaft (26) is also rotatably connected to the upper side of the inner cavity (15); the rotating shaft (26) is connected to one of the curved rods (25) via a friction wheel set (27), and the rotating shaft (26) is connected to the other curved rod (25) via a synchronous belt. A locking mechanism for controlling the angle of the rotating shaft (26) is also included.

4. The speaker with adjustable playback angle according to claim 3, characterized in that: The pull handle (24) is rotatably connected to the upper side surface of the cylindrical portion (12), the pull handle (24) comprises two vertical rods (55) connected to the cylindrical portion (12) and a horizontal rod (51) connecting the two vertical rods (55), the locking mechanism comprises an ejection groove (52) arranged in the lower side surface of the horizontal rod (51), and the bottom surface of the ejection groove (52) is connected to a pressing plate (53) through a spring, and the pressing plate (53) extends to the lower side of the horizontal rod (51), a plurality of card slots (54) are arranged in the upper side surface of the cylindrical portion (12), the card slots (54) are distributed at equal angles with the rotation axis of the pull handle (24) as the center, and a card plate (50) capable of being inserted into the card slot (54) is fixedly arranged on the lower side surface of the pressing plate (53).

5. The speaker with adjustable playback angle according to claim 4, characterized in that: A threaded shaft (56) is rotatably connected in the crossbar (51), a knob (57) is mounted on the upper end of the threaded shaft (56), and a block (58) threadably connected to the threaded shaft (56) is slidably connected in the ejection slot (52) up and down.

6. The speaker with adjustable playback angle according to claim 3, characterized in that: The two slide grooves (23) are offset up and down, and the end of the sliding plate (22) extending into the slide groove (23) is provided with an arc-shaped plate (61) for shielding the slide groove (23).

7. The speaker with adjustable playback angle according to claim 6, characterized in that: The bent rod (25) is inserted into the arc-shaped plate (61) to be connected to the sliding plate (22), and the bent rod (25) is capable of sliding in the arc-shaped plate (61).

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