CN211089951U

CN211089951U - Can change full frequency bone conduction loudspeaker of counter weight

Info

Publication number: CN211089951U
Application number: CN201922280110.9U
Authority: CN
Inventors: 褚建峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-07-24
Anticipated expiration: 2029-12-17

Abstract

A full-frequency bone conduction speaker with changeable counterweight comprises: a magnet part including a cylinder and a magnet disposed in the cylinder; the counterweight body is sleeved outside the magnetic cylinder; the coil part comprises a coil fixing body, a vibration transmission sheet fixing body and a coil, wherein the vibration transmission sheet fixing body and the coil are respectively connected to two ends of the coil fixing body; the vibration transmission piece is in a ring-shaped sheet shape, and the inner ring and the outer ring of the vibration transmission piece are respectively connected with the vibration transmission piece fixing body and the magnetic cylinder; and a PCB disposed at one end of the coil part. The full-frequency bone conduction loudspeaker is simpler to assemble, reduces some assembling links and reduces assembling cost; the counterweight body can adopt different thickness, length, material and shape according to the demand difference, can change the weight of magnetic cylinder and change the amplitude of biography vibration piece to satisfy different tone quality requirements, and can simplify production facility and production line when producing multiple model loudspeaker, save manufacturing cost, improve production efficiency and rate of equipment utilization.

Description

Can change full frequency bone conduction loudspeaker of counter weight

Technical Field

The utility model relates to an audio frequency propagates technical field, especially relates to a can change full bone conduction loudspeaker of full frequency of counter weight.

Background

The existing bone conduction horn has the advantages of smaller and smaller structure, more and more compact internal space structure, complex structure, larger assembly difficulty and difficulty in reducing production cost.

In the existing small bone conduction loudspeaker, each specification needs one set of production line for production, so that the cost of an enterprise is high, and the production efficiency is low. Therefore, there is a need for a bone conduction speaker with a simple structure and low assembly difficulty, which can share a set of production lines.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one defect of the prior art, the utility model provides a full-frequency bone conduction loudspeaker that can change counter weight.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a full-frequency bone conduction speaker with changeable counterweight comprises: a magnet portion including a cylinder and a magnet disposed in the cylinder; the counterweight body is sleeved outside the magnetic cylinder; the coil part comprises a coil fixing body, a vibration transmission sheet fixing body and a coil, wherein the vibration transmission sheet fixing body and the coil are respectively connected to two ends of the coil fixing body; the vibration transmission piece is in a ring-shaped sheet shape, the inner ring of the vibration transmission piece is connected with the vibration transmission piece fixing body, and the outer ring of the vibration transmission piece is connected with the magnetic cylinder; and a PCB disposed at one end of the coil part.

The full-frequency bone conduction loudspeaker provided by the utility model adopts the vibration transmission sheet fixing body to relatively fix the vibration transmission sheet on the coil fixing body, so that the assembly of the full-frequency bone conduction loudspeaker is simpler, some assembly links are reduced, and the assembly cost is reduced; the counterweight body is established to the cover in the magnetic cylinder outside, and the counterweight body can adopt different thickness, length, material and shape according to the demand difference, can change the weight of magnetic cylinder and change the amplitude of biography vibration piece to satisfy different tone quality requirements, and when guaranteeing to satisfy the production multiple model loudspeaker, simplify production facility and production line, save manufacturing cost, improve production efficiency and rate of equipment utilization.

Furthermore, a convex ring is arranged on the counterweight body, and the vibration transmission piece is clamped between the convex ring and the magnetic cylinder.

Further, the counterweight body is tubular, and one end of the counterweight body close to the open end of the magnetic cylinder extends radially inwards to form the convex ring.

Furthermore, the counterweight body and the magnetic cylinder are fixedly sleeved through transition fit.

Further, a boss is arranged at one end, close to the vibration transmission piece fixing body, of the coil fixing body, and the vibration transmission piece is clamped between the boss and the vibration transmission piece fixing body.

Furthermore, the boss is provided with a first protrusion matched with the inner ring of the vibration transmission piece, the vibration transmission piece fixing body is provided with a first through hole matched with the first protrusion, and the first protrusion and the first through hole are in inserting fit so as to clamp the vibration transmission piece between the boss and the vibration transmission piece fixing body.

Furthermore, a plurality of second bulges are further arranged on the boss, second through holes are formed in the positions, corresponding to the second bulges, of the vibration transmission piece, and third through holes are formed in the positions, corresponding to the second bulges, of the vibration transmission piece fixing body.

Furthermore, the second bulges are uniformly distributed on the circumference by taking the first bulges as the center.

Further, the PCB board is connected to the end, far away from the vibration transmission piece, of the vibration transmission piece fixing body, and the PCB board is provided with a position avoiding hole used for avoiding the first bulge.

Furthermore, a first avoiding groove for wiring is formed in the PCB, and a second avoiding groove for wiring is formed in the coil fixing body.

To sum up, the utility model provides a full bone conduction loudspeaker frequently has following technological effect:

1) the vibration transmission sheet fixing body is adopted to relatively fix the vibration transmission sheet on the coil fixing body, so that the assembly of the full-frequency bone conduction loudspeaker is simpler, some assembly links are reduced, and the assembly cost is reduced;

2) the counterweight body is sleeved outside the magnetic cylinder, and can adopt different thicknesses, lengths, materials and shapes according to different requirements, so that the weight of the vibrating body and the amplitude of the vibration transmission sheet can be changed, different tone quality effects are generated, and the requirements of customers on bone conduction tone quality differentiation are met;

3) the counterweight body is sleeved outside the magnetic cylinder, the convex ring is matched with the opening end of the magnetic cylinder to clamp the edge of the outer ring of the vibration transmission piece, and the counterweight body and the magnetic cylinder are sleeved and fixed in a transition fit manner, so that the assembly process is greatly simplified, and the assembly difficulty is further reduced;

4) through the cooperation of each protrusion and through-hole to pass the piece location centre gripping of shaking and fix between coil fixed body and the piece fixed body that passes the shaking, the whole equipment is convenient, is convenient for realize automated production, need not any complicated assembly process.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. a PCB board; 11. avoiding holes; 12. a first avoiding groove; 2. a coil; 3. a magnet; 4. a magnetic cylinder; 5. a vibration transmission sheet; 51. a second through hole; 6. a counterweight body; 61. a convex ring; 7. a vibration transmitting sheet fixing body; 71. a first through hole; 72. a third through hole; 8. a coil fixing body; 81. a boss; 82. a first protrusion; 83. a second protrusion; 84. a second avoiding groove.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply 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 limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, the utility model discloses a full-frequency bone conduction loudspeaker that can change counter weight to solve the problem that current bone conduction loudspeaker assembly is difficult, manufacturing cost is high, production efficiency is low. This full-frequency bone conduction loudspeaker includes: the PCB comprises a magnet part, a counterweight body 6, a coil part, a vibration transmission piece 5 and a PCB 1, wherein the magnet part comprises a magnetic cylinder 4 and a magnet 3 arranged in the magnetic cylinder 4; the counterweight body 6 is sleeved outside the magnetic cylinder 4; the coil part comprises a coil fixing body 8, a vibration transmission sheet fixing body 7 and a coil 2, wherein the vibration transmission sheet fixing body 7 and the coil 2 are respectively connected to two ends of the coil fixing body 8; the vibration transmission piece 5 is in a ring-shaped sheet shape, the inner ring of the vibration transmission piece 5 is connected with the vibration transmission piece fixing body 7, and the outer ring of the vibration transmission piece 5 is connected with the magnetic cylinder 4; the PCB board 1 is disposed at one end of the coil part.

The full-frequency bone conduction loudspeaker provided by the utility model adopts the vibration transmission piece fixing body 7 to relatively fix the vibration transmission piece 5 on the coil fixing body 8, replaces the original welding assembly process of the vibration transmission piece 5 and the coil fixing body 8, so that the assembly of the full-frequency bone conduction loudspeaker is simpler, reduces some assembly links and reduces the assembly cost; the counterweight body 6 is established to the cover in the 4 outside of magnet jar, and the counterweight body 6 can adopt different thickness, length, material and shape according to the demand difference, can change the weight of magnet jar 4 and change the amplitude of passing vibration piece 5 to satisfy different tone quality requirements, and when guaranteeing to satisfy production multiple model loudspeaker, simplify production facility and production line, save manufacturing cost, improve production efficiency and rate of equipment utilization.

Referring to fig. 1 and 2, the magnetic cylinder 4 is substantially U-shaped with an open end, the magnet 3 may be fixed in the middle of the inner cavity of the magnetic cylinder 4 by gluing and/or magnetic attraction, the coil 2 is disposed at an end of the coil fixing body 8 facing the inner cavity of the magnetic cylinder 4, and the coil 2 is disposed opposite to the magnet 3; the other end of the coil fixing body 8 is provided with the vibration transmission piece fixing body 7, the PCB 1 is connected to one end, away from the coil fixing body 8, of the vibration transmission piece fixing body 7, and the inner ring and the outer ring of the vibration transmission piece 5 are respectively connected with the vibration transmission piece fixing body 7 and the magnetic cylinder 4.

Referring to fig. 1 and 2, in the present embodiment, a convex ring 61 is disposed on the counterweight body 6, and the vibration transmission piece 5 is clamped between the convex ring 61 and the magnetic cylinder 4. Specifically, the counter weight body 6 is roughly the tubulose, the internal diameter of the counter weight body 6 with the external diameter looks adaptation of magnetic cylinder 4, so that 6 covers of the counter weight body are established in the 4 outsides of magnetic cylinder, the counter weight body 6 is close to the one end radial inward extension of 4 open ends of magnetic cylinder is in order to form bulge loop 61, the internal diameter of bulge loop 61 with the internal diameter looks adaptation of magnetic cylinder 4, the outer loop diameter of passing vibration piece 5 with the external diameter looks adaptation of magnetic cylinder 4, during the assembly, the outer loop edge of passing vibration piece 5 is held in the opening terminal surface of magnetic cylinder 4 with between the bulge loop 61, avoided passing vibration piece 5 to adopt laser spot welding technology, the drawback of high price and unstable, also be convenient for mechanized batch volume production more.

In this embodiment, the counterweight 6 and the magnetic cylinder 4 are fixedly sleeved in a transition fit manner, so that the steps of dispensing are reduced, the assembly process is simplified, and the assembly difficulty is reduced.

In this embodiment, the weight body 6 may be made of plastic, metal, or composite material, and the shape and size of the weight body 6 may be various specifications, such as a tubular shape, a hollow truncated cone shape, and the like. The counterweight bodies 6 with different materials, shapes and sizes can produce different weights, so that the weight of the magnetic cylinder 4 is changed to cause the amplitude of the vibration transmission piece 5 to be changed, and different sound quality effects can be produced. When the weight of the counterweight body 6 is heavier, the amplitude of the vibration transmission piece 5 is smaller, and the tone quality is biased to be bass; when the weight of the weight 6 is lighter, the amplitude of the vibration transmitting piece 5 is larger, and the tone quality is biased to medium-high sound.

In the present embodiment, the thickness of the vibration transmission plate 5 is between 0.03mm and 0.5 mm. The thickness of the vibration transmission sheet 5 is adjusted according to the size and power of the full-frequency bone conduction loudspeaker, and the thickness of the vibration transmission sheet 5 is thicker when the size of the full-frequency bone conduction loudspeaker is larger, and is thinner otherwise.

Referring to fig. 1 and 2, in the present embodiment, a boss 81 is disposed at one end of the coil fixing body 8 close to the vibration transmission plate fixing body 7, and the vibration transmission plate 5 is clamped between the boss 81 and the vibration transmission plate fixing body 7. Specifically, boss 81 is located the middle of the centre of the 8 upper ends of coil fixing body, boss 81 the centre be provided with the biography shakes the first arch 82 of 5 inner ring matched with of piece, the biography shake be provided with on the piece fixing body 7 with first arch 82 matched with first through-hole 71, can adopt glue to bond or transition fit to be connected between first arch 82 and the first through-hole 71, in order to accomplish coil fixing body 8 shakes the fixed of piece fixing body 7 with the biography. The first protrusion 82 and the first through hole 71 are in inserting fit to clamp the vibration transmission piece 5 between the boss 81 and the vibration transmission piece fixing body 7, so that the original welding and assembling process of the vibration transmission piece 5 is replaced, and the assembling difficulty and the assembling cost are greatly reduced. The first protrusion 82 may have a trapezoidal, circular, rectangular structure, and the like, and the first through hole 71 may also have a trapezoidal, circular, rectangular structure, and the like. The upper end of the first protrusion 82 is provided with a chamfer so as to guide and mount the vibration transmission piece 5 and the vibration transmission piece fixing body 7.

Referring to fig. 1 and 2, in this embodiment, in order to better position the vibration transmission plate 5 to prevent it from loosening, the boss 81 is further provided with a plurality of second protrusions 83, the vibration transmission plate 5 is provided with second through holes 51 at positions corresponding to the second protrusions 83, the vibration transmission plate fixing body 7 is provided with third through holes 72 at positions corresponding to the second protrusions 83, and during assembly, the second protrusions 83 sequentially penetrate through the second through holes 51 and the third through holes 72, so that the vibration transmission plate 5 and the vibration transmission plate fixing body 7 are positioned and limited on the coil fixing body 8.

In this embodiment, specifically, four second protrusions 83 are provided, and the four second protrusions 83 are circumferentially and uniformly distributed with the first protrusion 82 as a center.

Referring to fig. 1 and 2, in this embodiment, the PCB board 1 is connected to the vibration transmission sheet fixing body 7, and is far away from one end of the vibration transmission sheet 5, so that a gap is maintained between the PCB board 1 and the vibration transmission sheet 5, and the vibration transmission sheet 5 is prevented from colliding with the PCB board 1 during vibration, and the PCB board 1 is provided with a position avoiding hole 11 for avoiding the first protrusion 82, so that the first protrusion 82 can be inserted into the position avoiding hole 11 to facilitate the installation and positioning of the PCB board 1. The PCB board 1 and the vibration transmission piece fixing body 7 can be fixed through dispensing or welding.

Referring to fig. 2, in the present embodiment, the PCB 1 is provided with a first avoiding groove 12 for routing, and the coil fixing body 8 is provided with a second avoiding groove 84 for routing, so as to facilitate connection of voice coil wiring.

In other preferred embodiments, the magnet portion further comprises a washer piece attached to an end of the magnet 3 away from the cylinder 4. Wherein, a magnetic gap is formed between the washer sheet and the coil fixing body 8, and a uniform magnetic field required by movement is provided for the coil 2. Indeed, with the advancement of the technology, the washer sheet can be omitted without affecting the magnetic field of the magnet portion, and the present invention is not limited as to whether the magnet portion includes the washer sheet.

To sum up, the full-frequency bone conduction loudspeaker provided by the utility model changes the weight of the magnetic cylinder 4 and the amplitude of the vibration transmission piece 5 by changing the material and the shape of the counterweight body 6, so as to generate different tone quality effects, thereby meeting the demand of customers for the differentiation of bone conduction tone quality; when the loudspeakers with different specifications and models are produced, only the balance weights 6 with various specifications need to be configured, so that enterprises can simplify production equipment and production lines, the production cost is saved, and the production efficiency and the equipment utilization rate are improved; overall structure is simple and convenient, and the equipment is convenient, and the assembly degree of difficulty is low, is convenient for realize automated production, improves the whole productivity effect of enterprise.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a can change full frequency bone conduction loudspeaker of counter weight which characterized in that includes:

a magnet part including a cylinder (4) and a magnet (3) provided in the cylinder (4);

the counterweight body (6) is sleeved outside the magnetic cylinder (4);

the coil part comprises a coil fixing body (8), a vibration transmission sheet fixing body (7) and a coil (2), wherein the vibration transmission sheet fixing body (7) and the coil (2) are respectively connected to two ends of the coil fixing body (8);

the vibration transmission piece (5) is in a ring-shaped sheet shape, the inner ring of the vibration transmission piece (5) is connected with the vibration transmission piece fixing body (7), and the outer ring of the vibration transmission piece (5) is connected with the magnetic cylinder (4);

and a PCB (1) disposed at one end of the coil part.

2. The full-band bone conduction speaker according to claim 1, wherein the weight body (6) is provided with a convex ring (61), and the vibration transmission plate (5) is clamped between the convex ring (61) and the magnetic cylinder (4).

3. The full band bone conduction horn according to claim 2, wherein the weight body (6) is tubular, and an end of the weight body (6) near the open end of the magnetic cylinder (4) extends radially inward to form the convex ring (61).

4. The full-frequency bone conduction horn according to claim 3, wherein the counterweight body (6) and the magnetic cylinder (4) are fixed in a sleeved mode through transition fit.

5. The full-band bone conduction speaker according to claim 1, wherein a boss (81) is disposed at one end of the coil fixing body (8) close to the vibration transmission plate fixing body (7), and the vibration transmission plate (5) is clamped between the boss (81) and the vibration transmission plate fixing body (7).

6. The full-frequency bone conduction loudspeaker according to claim 5, wherein the boss (81) is provided with a first protrusion (82) which is matched with the inner ring of the vibration transmission plate (5), the vibration transmission plate fixing body (7) is provided with a first through hole (71) which is matched with the first protrusion (82), and the first protrusion (82) is matched with the first through hole (71) in an inserting manner so as to clamp the vibration transmission plate (5) between the boss (81) and the vibration transmission plate fixing body (7).

7. The full-frequency bone conduction loudspeaker according to claim 6, wherein the boss is further provided with a plurality of second protrusions (83), the vibration transmission plate (5) is provided with second through holes (51) at positions corresponding to the second protrusions (83), and the vibration transmission plate fixing body (7) is provided with third through holes (72) at positions corresponding to the second protrusions (83).

8. The full band bone conduction horn according to claim 7, wherein the second protrusions (83) are circumferentially and uniformly distributed around the first protrusion (82).

9. The full-frequency bone conduction loudspeaker according to claim 6, wherein the PCB (1) is connected to one end of the vibration transmission plate fixing body (7) far away from the vibration transmission plate (5), and the PCB (1) is provided with a position avoiding hole (11) for avoiding the first protrusion (82).

10. The full-band bone conduction speaker according to claim 9, wherein a first avoiding groove (12) for routing is formed in the PCB (1), and a second avoiding groove (84) for routing is formed in the coil fixing body (8).