A loudspeaker and a diaphragm thereof

Abstract

The utility model relates to loudspeaker technical field, concretely relates to a loudspeaker and its vibrating diaphragm, including shell and vibrating diaphragm, the shell is trumpet -shaped structure, the central axis of shell is provided with magnetically conductive column, it is inverted '' T '' character structure, its top from below to above sets annular magnet and magnetically conductive plate in proper order, the inside of magnet and magnetically conductive plate and the protrusion between magnetically conductive column top are provided with voice coil, the outer wall of voice coil is provided with fixed groove, and the fixed groove is wound with energized coil, the vibrating diaphragm is trumpet -shaped, and one end is fixedly connected with the top of voice coil, and the other end is connected with the trumpet mouth of shell, the inside of shell still is provided with centering support piece and vibrating diaphragm connection, the utility model has the advantages of: the fixed groove is set up on the outer surface of voice coil, and the energized coil is installed in the fixed groove, makes the energized coil and voice coil form a whole structure, reduces the overall weight of voice coil, makes it can produce better vibration effect, improves the sound quality of loudspeaker.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, specifically to a loudspeaker and its diaphragm. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals. There are many types of loudspeakers, but their main principle is that audio electrical energy vibrates the cone or diaphragm through electromagnetic, piezoelectric, or electrostatic effects, causing it to resonate with the surrounding air and produce sound.

[0003] Whether it's an external magnet or internal magnet type loudspeaker, it requires a energized coil wound around a voice coil to drive the diaphragm to vibrate and produce sound. Traditional loudspeakers use glue to fix the energized coil and voice coil. However, glue fixation increases the weight of the voice coil and reduces its vibration effect. Moreover, during the curing process, the glue is easily affected by gravity and forms beads at its bottom. Since the space occupied by the voice coil itself is quite small, the beads can easily cause the voice coil to get stuck or deflect at an angle due to instability during vibration, producing noise and reducing sound quality.

[0004] To address the aforementioned problems, there is an urgent need for a loudspeaker and its diaphragm. Summary of the Invention

[0005] The purpose of this invention is to provide a loudspeaker and its diaphragm to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a loudspeaker and its diaphragm are provided, including a housing and a diaphragm. The housing has a horn-shaped structure, and a magnetic post is provided at the central axis of the housing. The magnetic post has an inverted "T" shape structure, and an annular magnet and a magnetic plate are arranged sequentially from bottom to top on its top. A voice coil is arranged between the magnet and the magnetic plate and the top protrusion of the magnetic post. A fixing groove is formed on the outer wall of the voice coil, and an energized coil is wound in the fixing groove. The diaphragm is horn-shaped, with its smaller opening end fixedly connected to the top of the voice coil and its larger opening end connected to the horn mouth of the outer shell. A centering support plate is also provided on the inner side of the outer shell and connected to the diaphragm. A dust cover is provided on the top of the end with the smaller opening of the vibrating diaphragm, and the end with the larger opening arches upward to form a folded edge.

[0007] Furthermore, the dust cover and the diaphragm are made of the same material, including a plastic diaphragm, a paper diaphragm, a ceramic diaphragm, or a carbon fiber diaphragm.

[0008] Furthermore, the fixing groove has a spiral structure, which is evenly arranged on the outer wall of the voice coil, and the size of the fixing groove is equal to the radius of the energized coil.

[0009] Furthermore, the diaphragm is bonded to the voice coil with adhesive, and the dust cover is bonded to the diaphragm with adhesive.

[0010] Furthermore, the centering support plate has a wavy ring structure.

[0011] Furthermore, the outer casing has an "L"-shaped protrusion at the flared end, with a pressure ring threaded to the inner side of its vertical side. The pressure ring presses the diaphragm tightly and fixes it to the horizontal side.

[0012] Furthermore, a dustproof mesh is glued to the flared opening of the outer casing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: A spiral-shaped fixing groove is made on the outer surface of the voice coil. The energized coil is installed in the fixing groove by winding, so that the energized coil and the voice coil form an integral structure, which reduces the overall weight of the voice coil, enables it to produce better vibration effect, and improves the sound quality of the speaker. Secondly, since the glue has been eliminated, there is no need to worry about the formation of beads, resulting in a more uniform texture that can prevent deviations during vibration and reduce noise. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the voice coil structure of this utility model.

[0015] The meanings of the labels in the diagram are as follows: 1. Outer shell; 2. Magnetic post; 3. Magnet; 4. Magnetic plate; 5. Voice coil; 6. Fixing groove; 7. Energizing coil; 8. Diaphragm; 9. Centering support; 10. Dust cover; 11. Folded edge; 12. Pressure ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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 protection scope of the present utility model.

[0017] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “described” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this specification means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0018] Please see Figures 1-3 As shown, a loudspeaker and its diaphragm are provided, including a housing 1 and a diaphragm 8. The housing 1 has a horn-shaped structure, and a magnetic post 2 with an inverted "T" shape is provided at the central axis of the housing 1. A ring-shaped magnet 3 and a magnetic plate 4 are arranged sequentially from bottom to top on the top of the T-shaped post 2. A voice coil 5 is disposed between the magnet 3 and the magnetic plate 4 and the protrusion at the top of the magnetic post 2. A fixing groove 6 is formed on the outer wall of the voice coil 5, and a current-carrying coil 7 is wound inside the fixing groove 6. The diaphragm 8 is bonded to the voice coil 5 with adhesive, and a dust cover 10 is bonded to the diaphragm 8 with adhesive. Figure 2 In the middle, a base plate is also provided at the bottom of the magnetic conductive plate 4; It is particularly important to note that in this embodiment, the fixing groove 6 has a spiral structure and is evenly arranged on the outer wall of the voice coil 5. First, the energized coil 7 is spirally wound to generate an electric field; second, the spiral winding can increase the contact with the voice coil 5, so that the two form a whole.

[0019] The diaphragm 8 is horn-shaped, with its smaller opening end fixedly connected to the top of the voice coil 5, and its larger opening end connected to the horn mouth of the outer shell 1. The inner side of the outer shell 1 is also provided with a centering support plate 9 connected to the diaphragm 8. The centering support plate 9 is a wavy ring structure. A dust cover 10 is provided on the top of the end with the smaller opening of the vibrating diaphragm 8, and the end with the larger opening arches upward to form a folded edge 11. like Figure 1 and Figure 2 As shown, the energized coil 7 is spirally wound in the fixed groove 6 to achieve synchronous movement of the energized coil 7 and the voice coil 5. In particular, after the energized coil 7 is energized, it generates an electromagnetic field. Under the action of the magnetic field of the magnetic column 2 and the magnet 3, the energized coil 7 will vibrate up and down, thereby driving the vibration diaphragm 8 and the dust cover 10 to vibrate and produce sound. It is important to note that, in order to ensure the connection and synchronous vibration of the energized coil 7 and the voice coil 5, the depth of the fixing groove 6 can be increased so that its maximum depth exceeds the radius of the energized coil 7. The fixing groove 6 can better wrap the energized coil 7 to form a snap-fit ​​effect. Compared with the traditional glue bonding effect, there is no glue adhering to the surface of the voice coil 5, which reduces the weight and obtains a better vibration effect, thereby improving the sound quality of the speaker. In this embodiment, the dust cover 10 and the diaphragm 8 are made of the same material, including a plastic diaphragm, a paper diaphragm, a ceramic diaphragm, or a carbon fiber diaphragm; and the main body of the diaphragm 8, that is... Figure 2 The structures of the slanted part, the folded edge 11, and the dust cover 10 are all different, so the audio emitted when vibrating will be different. In this embodiment, when the diaphragm 8 vibrates, the dust cover 10 vibrates along with it and generates high-frequency sound, while the folded edge 11 generates low-frequency sound and its body generates mid-frequency sound, so as to achieve a mixture of mid, high and low frequencies and comprehensively improve the sound quality. like Figure 1 and Figure 2 As shown, an "L"-shaped protrusion is provided at the flared opening of the outer shell 1, and a pressure ring 12 is threadedly connected to the inner side of its vertical side. The pressure ring 12 presses and fixes the vibrating diaphragm 8 to the horizontal side. When the vibrating diaphragm 8 is damaged or loose, the pressure ring 12 can be unscrewed to replace the vibrating diaphragm 8. Meanwhile, in order to reduce the entry of dust or foreign objects, a dustproof mesh is installed at the flared end of the outer casing 1 to increase the protection of the diaphragm 8.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A loudspeaker and its diaphragm, comprising a housing (1) and a diaphragm (8), wherein the housing (1) has a horn-shaped structure, characterized in that: A magnetic column (2) is provided at the central axis of the outer shell (1). It has an inverted "T" shape structure. A ring magnet (3) and a magnetic plate (4) are arranged sequentially from bottom to top on its top. A voice coil (5) is provided between the inside of the magnet (3) and the magnetic plate (4) and the top protrusion of the magnetic column (2). A fixing groove (6) is provided on the outer wall of the voice coil (5). An energized coil (7) is wound in the fixing groove (6). The diaphragm (8) is horn-shaped, with its smaller opening end fixedly connected to the top of the voice coil (5), and its larger opening end connected to the horn mouth of the outer shell (1). The inner side of the outer shell (1) is also provided with a centering support plate (9) connected to the diaphragm (8). A dust cover (10) is provided on the top of the smaller opening end of the vibrating diaphragm (8), and the end near the larger opening arches upward to form a folded edge (11).

2. A loudspeaker and its diaphragm according to claim 1, characterized in that: The dust cover (10) and the diaphragm (8) are made of the same material, including plastic diaphragm, paper diaphragm, ceramic diaphragm or carbon fiber diaphragm.

3. A loudspeaker and its diaphragm according to claim 2, characterized in that: The fixing groove (6) has a spiral structure and is evenly arranged on the outer wall of the voice coil (5). The size of the fixing groove (6) is equal to the radius of the energized coil (7).

4. A loudspeaker and its diaphragm according to claim 3, characterized in that: The diaphragm (8) is bonded to the voice coil (5) with glue, and the dust cover (10) is bonded to the diaphragm (8) with glue.

5. A loudspeaker and its diaphragm according to claim 4, characterized in that: The centering support (9) has a wavy ring structure.

6. A loudspeaker and its diaphragm according to claim 5, characterized in that: The outer shell (1) has an "L"-shaped protrusion at the flared end, and a pressure ring (12) is threaded to the inner side of its vertical side. The pressure ring (12) presses the vibrating diaphragm (8) and fixes it to the horizontal side.

7. A loudspeaker and its diaphragm according to claim 6, characterized in that: A dustproof mesh is also glued to the flared opening of the outer shell (1).

Images