Sound production device and electronic equipment

Abstract

The utility model provides a pronunciation device and electronic equipment. The pronunciation device comprises a pronunciation module; a shell, wherein the sound production module is arranged in the shell; and the at least three passive plates are respectively arranged on different side surfaces of the shell and respectively generate different vibration forces when the sound production module produces sound, and the resultant force of the different vibration forces is 0.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a sound producing device and an electronic equipment. Background Art

[0002] In electronic devices, sound generation is one of the important functions. Installing a passive board (PR board) helps electronic devices achieve low-frequency sound quality. However, during the sound generation process, the passive board vibrates due to its mass, causing the electronic device to shake, resulting in the screen of the electronic device to shake; for example, in a projection device, the vibration of the passive board will cause the screen to shake, affecting the user experience. Utility Model Content

[0003] The main purpose of the present application is to provide a sound-generating device and an electronic device, aiming to solve the technical problem in the prior art that the vibration of the passive panel causes the screen display to shake.

[0004] In a first aspect, an embodiment of the present application provides a sound producing device, the sound producing device comprising:

[0005] Pronunciation module;

[0006] A housing, wherein the sound producing module is arranged in the housing;

[0007] At least three passive plates are respectively arranged on different sides of the shell, and respectively generate different vibration forces when the sound module makes a sound, and the resultant force of the different vibration forces is 0.

[0008] Optionally, the different vibration forces intersect at a point.

[0009] Optionally, the number of the passive boards is three, respectively including:

[0010] A first passive plate, the first passive plate is arranged on a first side surface of the housing, and the first passive plate generates a first vibration force when the sound module makes a sound;

[0011] a second passive plate, the second passive plate being disposed on a second side surface of the housing, and the second passive plate generating a second vibration force when the sound module makes a sound;

[0012] a third passive plate, the third passive plate being disposed on a third side surface of the housing; the third passive plate generating a third vibration force when the sounding module makes a sound;

[0013] The combined force of the first vibration force, the second vibration force and the third vibration force is zero.

[0014] Optionally, the first side surface is perpendicular to the second side surface; the angle between the third side surface and the first side surface is α°, and the angle between the third side surface and the second side surface is 90°-α°;

[0015] The ratio of the first vibration force to the third vibration force is cos α.

[0016] Optionally, the angle between the third side surface and the first side surface is 45°, and the ratio of the first vibration force to the third vibration force is

[0017] Optionally, the first passive board and the second passive board have the same mass; and the ratio of the mass of the first passive board to the mass of the third passive board is cosα.

[0018] Optionally, an angle between any two of the first side surface, the second side surface and the third side surface is 60°, and the first vibration force, the second vibration force and the third vibration force are of the same magnitude.

[0019] Optionally, a first mounting hole is provided on the first side surface, and the first passive board is mounted in the first mounting hole;

[0020] A second mounting hole is provided on the second side surface, and the second passive board is mounted in the second mounting hole;

[0021] The third side surface is provided with a third mounting hole, and the third passive board is mounted in the third mounting hole.

[0022] In a second aspect, an embodiment of the present application provides an electronic device, which includes the sound producing device as described above.

[0023] Optionally, the electronic device is a projection device.

[0024] In the technical solution of the embodiment of the present application, at least three passive panels are installed on the shell of the sound-producing device to improve the sound quality effect of the sound-producing device in the low-frequency band; when the sound module makes a sound, the at least three passive panels respectively generate different vibration forces, and the resultant force of these vibration forces is 0, so that when the sound-producing device is working, the vibration of the passive panels will not cause the display screen of the electronic device to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of a structure (right triangle) of a sound producing device provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure from the perspective of middle A;

[0028] Figure 3 for Figure 1 Schematic diagram of the structure from the perspective of middle B;

[0029] Figure 4 for Figure 1 A schematic diagram of the stress state of the pronunciation device in FIG.

[0030] Figure 5 A schematic diagram of another structure (equilateral triangle) of the sound producing device provided in an embodiment of the present application.

[0031] Reference numerals list

[0032] 110 case 130 Passive board 120 side 131 The first passive board 121 First side 132 Second passive board 122 Second side 133 The third passive board 123 The third side DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] The present application embodiment provides a sound producing device, the sound producing device comprising:

[0038] Pronunciation module (not shown);

[0039] A housing 110, wherein the sound producing module is disposed in the housing 110;

[0040] At least three passive plates 130 are respectively disposed on different side surfaces 120 of the housing 110 , and respectively generate different vibration forces when the sounding module makes a sound, and the resultant force of the different vibration forces is zero.

[0041] In the technical solution of the embodiment of the present application, at least three passive panels 130 are mounted on the shell 110 of the sound-generating device to improve the sound quality of the sound-generating device in the low-frequency band; when the sound module makes a sound, the at least three passive panels 130 respectively generate different vibration forces, and the resultant force of these vibration forces is 0, so that when the sound-generating device is working, the vibration of the passive panels 130 will not cause the display screen of the electronic device to shake.

[0042] The sound-generating device is usually limited in shape by the space of the entire electronic device. For example, in the field of projection equipment, the sound cavity space is often irregular. It is difficult for two symmetrically arranged passive panels 130 to ensure the volume of the sound cavity, so the technical solution of two passive panels 130 symmetrically arranged front and back is not suitable for irregular sound cavity spaces. Therefore, in the technical solution of the embodiment of the present application, in order to improve the sound quality effect and avoid the vibration of the passive panel 130 causing the picture to shake, a technical solution of at least three passive panels 130 is used to match the irregular sound cavity space, so as to effectively utilize the sound cavity space that can be reserved by the electronic device.

[0043] During the pronunciation process of the pronunciation module, at least three passive plates 130 in the cavity are compressed by air pressure and then contract or relax (bulge) together, thereby generating a vibration force, which is directed inward or outward at the same time; by arranging at least three passive plates 130 on different sides 120, and the different vibration forces generated can offset each other so that their combined force is 0, the pronunciation device does not vibrate, and does not cause shaking of the display screen of the electronic device.

[0044] In a specific implementation, the vibration force generated by the passive plate 130 is related to its mass, the sound frequency of the sound-generating device, and the constraint of the housing 110. Since the sound frequency of the sound-generating device is the same, and the constraints of the housing 110 on the passive plate 130 are all set to be the same, the mass of each passive plate 130 can be specifically set according to the spatial position relationship between the side surfaces 120 of the housing 110 to ensure that the resultant force of the vibration force is 0.

[0045] As an optional method of the above embodiment, the different vibration forces intersect at one point. Intersecting different vibration forces at one point can prevent the sound-generating device from rolling or having a tendency to roll. In the embodiment, the vibration force generated by each passive plate 130 is perpendicular to the side 120 on which it is located; therefore, when setting the shell 110, the spatial relationship between the side 120 that needs to be set can be specifically set so that the generated vibration forces can intersect at one point. For example, three passive plates 130 are set, and the three side surfaces 120 set by the three passive plates 130 are 60° to each other. For another example, four passive plates 130 are set, and the four side surfaces 120 set by the four passive plates 130 are 90° to each other, etc.

[0046] In this embodiment, since the sound frequencies of the sound-generating devices are the same and the constraints of the passive plates 130 by the housing 110 are set to be the same, the mass of each passive plate 130 can be specifically set according to the spatial position relationship between the side surfaces 120 of the housing 110 to ensure that the resultant force of the vibration force is 0. In order to ensure that different vibration forces intersect at one point, the spatial position relationship between the side surfaces 120 is usually set first, and then the resultant force of the vibration force is ensured to be 0 (that is, the mass of each passive plate 130 is specifically set).

[0047] In some specific embodiments, Figures 1 to 3As shown, the number of the passive plates 130 is three, including: a first passive plate 131, the first passive plate 131 is arranged on the first side surface 121 of the shell 110, and the first passive plate 131 generates a first vibration force F1 when the sound module makes a sound; a second passive plate 132, the second passive plate 132 is arranged on the second side surface 122 of the shell 110, and the second passive plate 132 generates a second vibration force F2 when the sound module makes a sound; a third passive plate 133, the third passive plate 133 is arranged on the third side surface 123 of the shell 110; the third passive plate 133 generates a third vibration force F3 when the sound module makes a sound; the combined force of the first vibration force F1, the second vibration force F2 and the third vibration force F3 is 0. In this embodiment, combined with Figure 4 As shown, the side 120 of the sound-generating device provided with the vibration plate is projected as a triangle at a certain viewing angle, and the first vibration force F1, the second vibration force F2 and the third vibration force F3 correspond to three sides perpendicular to the triangle respectively, and the resultant force of the first vibration force F1, the second vibration force F2 and the third vibration force F3 is 0.

[0048] As an alternative to the above embodiment, Figure 4 As shown, the first side surface 121 is perpendicular to the second side surface 122; the angle between the third side surface 123 and the first side surface 121 is α°, and the angle between the third side surface 123 and the second side surface 122 is 90°-α°; the ratio of the first vibration force F1 to the third vibration force F3 is cosα. In this embodiment, that is, the side surface 120 provided with the vibration plate of the sound-generating device is projected as a right triangle at a certain viewing angle, the first vibration force F1 and the second vibration force F2 are correspondingly perpendicular to the two right-angled sides of the triangle, the third vibration force F3 is perpendicular to the hypotenuse of the right triangle, and the ratio of the first vibration force F1 to the third vibration force F3 is cosα, and the ratio of the second vibration force F2 to the third vibration force F3 is sinα, and thus the resultant force of the first vibration force F1, the second vibration force F2 and the third vibration force F3 is 0.

[0049] As an alternative to the above embodiment, Figure 4 As shown, the angle between the third side surface 123 and the first side surface 121 is 45°, and the ratio of the first vibration force F1 to the third vibration force F3 is That is, the side 120 of the sound generating device provided with the vibration plate is projected as an isosceles right triangle at a certain viewing angle, the first vibration force F1 and the second vibration force F2 are perpendicular to the two waist sides of the triangle, the third vibration force F3 is perpendicular to the hypotenuse of the triangle, and the ratio of the first vibration force F1 to the third vibration force F3 is The ratio of the second vibration force F2 to the third vibration force F3 is That is, the first vibration force F1, the second vibration force F2 and the third vibration force F3 are equal. Then, the resultant force of the first vibration force F1 , the second vibration force F2 , and the third vibration force F3 is zero.

[0050] As an optional mode of the above embodiment, the mass of the first passive plate 131 and the second passive plate 132 are the same; the mass ratio of the first passive plate 131 to the mass of the third passive plate 133 is cosα. When the positional relationship between the three inclined surfaces on which the passive plate 130 is set is known, the masses of the three passive plates 130 can be specifically set. Since the side 120 on which the vibration plate is set in the sound producing device is projected as a right triangle at a certain viewing angle, in order to make the resultant force 0, the mass ratio of the first passive plate 131 to the mass of the third passive plate 133 is cosα, that is, the mass ratio of the second passive plate 132 to the mass of the third passive plate 133 is si nα; further, when the right triangle is an isosceles right triangle, the mass of the first passive plate 131 and the second passive plate 132 are the same, and the mass of the third passive plate 133 is the ratio of the two. times.

[0051] As an alternative to the above embodiment, Figure 5 As shown, the angle between any two of the first side surface 121, the second side surface 122 and the third side surface 123 is 60°, and the first vibration force F1, the second vibration force F2 and the third vibration force F3 are the same. In this embodiment, that is, the side surface 120 of the sounding device provided with the vibration plate is projected as an equilateral triangle at a certain viewing angle, which can be simplified as follows Figure 5 As shown, at this time, the first vibration force F1, the second vibration force F2 and the third vibration force F3 are of the same magnitude, and the angle between them is also 60°. At this time, when the sound-generating device makes sound, the vibration of the passive board 130 will not cause the display screen of the electronic device to shake.

[0052] In this embodiment, the three vibration plates have the same constraints, the same shapes, and the same masses.

[0053] As an optional mode of the above embodiment, a first mounting hole is provided on the first side surface 121, and the first passive plate 131 is installed in the first mounting hole. A second mounting hole is provided on the second side surface 122, and the second passive plate 132 is installed in the second mounting hole. A third mounting hole is provided on the third side surface 123, and the third passive plate 133 is installed in the third mounting hole. In an embodiment, the hole shape and size of the first mounting hole, the second mounting hole and the third mounting hole are set to be the same. The first passive plate 131, the second passive plate 132 and the third passive plate 133 are respectively arranged at the first mounting hole, the second mounting hole and the third mounting hole using the same constraint structure, for example, the constraint structure can be a plug-in structure, a threaded connection structure, an ultrasonic welding structure, etc.

[0054] In the above embodiments, affected by the manufacturing process of the shell 110, the manufacturing process of the passive board 130, and the errors in the assembly process, the resultant force of the different vibration forces being 0 can be understood as: the resultant force of the different vibration forces approaches 0, rather than being absolutely 0.

[0055] In a second aspect, an embodiment of the present application provides an electronic device, the electronic device comprising a sound producing device. The specific structure of the sound producing device refers to the above embodiment. Since the sound producing device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0056] As an optional aspect of the above embodiment, the electronic device is a projection device.

[0057] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A sounding device, characterized in that: The pronunciation device comprises: Pronunciation module; A housing, wherein the sound producing module is arranged in the housing; At least three passive plates are respectively arranged on different sides of the shell, and respectively generate different vibration forces when the sound module makes a sound, and the resultant force of the different vibration forces is 0.

2. The sound producing device according to claim 1, characterized in that: The different vibration forces intersect at one point.

3. The sound producing device according to claim 1 or 2, characterized in that: The number of the passive boards is three, including: A first passive plate, the first passive plate is arranged on a first side surface of the housing, and the first passive plate generates a first vibration force when the sound module makes a sound; a second passive plate, the second passive plate being disposed on a second side surface of the housing, and the second passive plate generating a second vibration force when the sound module makes a sound; a third passive plate, the third passive plate being disposed on a third side surface of the housing; the third passive plate generating a third vibration force when the sounding module makes a sound; The combined force of the first vibration force, the second vibration force and the third vibration force is zero.

4. The sound producing device according to claim 3, characterized in that: The first side surface is perpendicular to the second side surface; the angle between the third side surface and the first side surface is α°, and the angle between the third side surface and the second side surface is 90°-α°; The ratio of the first vibration force to the third vibration force is cos α.

5. The sound producing device according to claim 4, characterized in that: The angle between the third side surface and the first side surface is 45°, and the ratio of the first vibration force to the third vibration force is 6. The sounding device according to claim 4 or 5, characterized in that: The first passive board and the second passive board have the same mass; and the ratio of the mass of the first passive board to the mass of the third passive board is cosα.

7. The sound producing device according to claim 3, characterized in that: An angle between any two of the first side surface, the second side surface and the third side surface is 60°, and the first vibration force, the second vibration force and the third vibration force are the same in magnitude.

8. The sound producing device according to claim 3, characterized in that: A first mounting hole is provided on the first side surface, and the first passive board is mounted in the first mounting hole; A second mounting hole is provided on the second side surface, and the second passive board is mounted in the second mounting hole; The third side surface is provided with a third mounting hole, and the third passive board is mounted in the third mounting hole.

9. An electronic device, characterized in that: The electronic device comprises the sound producing device according to any one of claims 1 to 8.

10. The electronic device according to claim 9, characterized in that: The electronic device is a projection device.

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