JP3084309U - Speaker - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a speaker capable of shortening an assembling work to reduce a manufacturing cost and separating a frame and a yoke as required. SOLUTION: Frame 1, yoke 2, and magnetic element 3
, The coil 4, the diaphragm 5, and the cover 6 constitute a speaker. The yoke 2 has a circular groove formed with a hole at the center, a plurality of engaging projections integrally formed on the outer peripheral surface, the frame has a circular hole, and the inner edge of the yoke 2 has a circular hole. An engagement groove corresponding to the engagement protrusion is formed, an engagement protrusion of the yoke is fitted in the engagement groove, and a magnetic element 3 on which a coil 4 is wound is fitted in a circular groove of the yoke 2. Then, a cover is provided by attaching a vibrating membrane. At the inner edge of the circular hole of the frame 1, a protection wall extending downward and protecting the yoke 2 is integrally formed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a speaker, and more particularly, to a speaker suitable for a receiver of a mobile phone.

[0002]

[Prior art]

 As shown in FIG. 5, a conventional speaker for a handset for a mobile phone includes a frame (100), a yoke (200), a magnetic element (300), a coil (400), and a diaphragm (500). The yoke (200) is fitted into a hole formed in the center of the frame (100) to form a circular groove (201), and the circular groove (201) is formed. A magnetic element (300) is fitted to 201). A coil (400) is previously fitted around the outer periphery of the magnetic element (300). The vibrating membrane (500) is formed in a thin film shape, is provided horizontally on the magnetic element (300) and the coil (400), and further has a cover (600) to complete the assembly.

[0003] The above-described speaker assembly is performed by manually setting a yoke (200) in an injection mold of a frame (100) in advance, and injecting a plastic material on the yoke (200) and the frame (100). 100) are integrally molded. Such an operation has the following disadvantages. That is, human labor time increases, and manufacturing costs increase. In addition, they cannot be separated because they are integrally molded.

[0004]

[Problems to be solved by the invention]

 Therefore, in view of the above drawbacks of the conventional technology, the problem of the present invention is a speaker used in a portable telephone, etc., which shortens the time required for assembling work to reduce the manufacturing cost, and is also necessary. An object of the present invention is to provide a speaker capable of separating a frame and a yoke according to the requirements.

[0005]

[Means for Solving the Problems]

 Therefore, the present inventor has conducted intensive studies based on his years of experience in the art to solve the above-mentioned problems, and as a result, has combined the frame, yoke, magnetic element, coil, diaphragm, and cover as described below, and particularly claimed Focusing on the fact that the above problem can be solved by making the yoke and the yoke separable, these findings led to the completion of this invention.

That is, the present invention provides a speaker comprising a frame, a yoke, a magnetic element, a coil, a diaphragm, and a cover, wherein the yoke has a circular groove having a hole in the center. The frame is formed integrally with a plurality of engagement projections on the outer peripheral surface, the frame has a circular hole, and an engagement corresponding to the engagement projection of the yoke is formed on an inner edge of the circular hole. A mating groove is formed, an engaging protrusion of the yoke is fitted in the engaging groove of the frame, and a magnetic element having the coil wound thereon is fitted in a circular groove of the yoke. The present invention relates to a loudspeaker characterized by being adhered and further provided with the cover.

Hereinafter, a more specific description will be given. The speaker is constituted by the frame, the yoke, the magnetic element, the coil, the diaphragm, and the cover. The yoke has a circular groove formed with a hole at the center and a plurality of engaging projections integrally formed on the outer peripheral surface. The frame has a circular hole, and an engagement groove corresponding to the engagement protrusion of the yoke is formed at an inner edge of the circular hole. Further, the engaging projection of the yoke is fitted in the engaging groove of the frame, the magnetic element around which the coil is wound is fitted in the circular groove of the yoke, and the diaphragm is attached. The cover is provided. A protective wall extending downward and protecting the yoke is formed integrally with the inner edge of the circular hole of the frame. One engagement projection of the yoke is formed at each of three positions at which the circumference is divided into three equal parts, and the fitting grooves of the frame corresponding to the engagement projections are similarly positioned at three positions at which the circumference is divided into three equal parts. The three fitting grooves are formed one by one, and each of the three fitting grooves forms a notch having an appropriate length extending horizontally from the bottom in the same direction.

[0008]

[Embodiment of the invention]

 The loudspeaker according to the present invention is a small loudspeaker used for a mobile phone or the like, and is composed of a frame, a yoke, a magnetic element, a coil, a diaphragm, and a cover. And fix them together. In order to explain the structure and characteristics of such a speaker, a specific embodiment will be described below with reference to the drawings.

[0009]

【Example】

 FIG. 1 is an exploded view of the speaker according to the present invention. FIG. 2 is an exploded view of a frame and a yoke in the speaker of FIG. FIG. 3 is a plan view showing a state where the frame and the yoke in FIG. 2 are assembled. FIG. 4 is a perspective view when the state of FIG. 3 is viewed from below. According to the drawings, the speaker according to the present invention includes members such as a frame (1), a yoke (2), a magnetic element (3), a coil (4), a diaphragm (5), and a cover (6). The yoke (2) is provided in a circular hole (11) formed in the center of the frame (1). A circular groove (21) is formed in the yoke (2), and a magnetic element (3) around which a coil (4) is wound around the outer periphery is fitted into the circular groove (21) of the yoke (2). 1) A film-shaped vibrating membrane (5) is adhered on top, and a cover (6) is further provided.

The yoke (2) has a circular groove (21) formed with a hole at the center, and three engaging projections (22) are integrally formed on the outer peripheral surface. The engaging projections (22) are formed at positions that divide the circumference into three equal parts.

In the frame (1), engagement grooves corresponding to the engagement protrusions (22) of the yoke (2) are formed at positions that divide the circumference of the inner edge of the circular groove (21) into three equal parts. Three fitting grooves (12) are formed equidistantly along the circumference. Each of the fitting grooves (12) is formed with a notch of an appropriate length extending horizontally from the bottom in the same direction, and the width of the notch is equal to the engaging protrusion of the yoke (2). It has a width that can accommodate the thickness of (22). In addition, a protection wall (13) extending downward and protecting the yoke (20) is formed integrally with the inner edge of the frame (2). The protective wall (13) is formed at three positions at which the circumference is divided into three equal parts, and each has the same shape.

When the yoke (2) is attached to the frame (1) configured as described above, the engagement protrusion (22) of the yoke (3) is inserted into the fitting groove (12) of the frame (2). By rotating the yoke (2), the engaging projection (22) enters the notch of the fitting groove (12), and the yoke (2) engages with the frame (1). Therefore, the assembling work of the frame (1) and the yoke (2) is simplified, and the assembling can be performed quickly and easily. When the yoke is rotated in the opposite direction, it can be taken out of the frame (1).

The above is a description of preferred embodiments of the present invention, and does not limit the scope of implementation of the present invention. Therefore, any change or modification that can be made by a person skilled in the art and having an equivalent effect on the present invention shall fall within the technical scope of the registered utility model of the present invention.

[0014]

[Effect of the invention]

 The present invention relates to a speaker used in a mobile phone or the like, and has an effect of shortening an assembling work to reduce a manufacturing cost and separating a frame and a yoke as necessary. I can.

[Brief description of the drawings]

FIG. 1 is an exploded view of a speaker according to the present invention.

FIG. 2 is an exploded view of a frame and a yoke in the speaker of FIG.

FIG. 3 is a plan view showing a state where a frame and a yoke in FIG. 2 are assembled.

FIG. 4 is a perspective view when the state of FIG. 3 is viewed from below.

FIG. 5 is an exploded view of a conventional speaker.

[Explanation of symbols]

 Reference Signs List 1 frame 100 frame 12 fitting groove 13 protective wall 2 yoke 200 yoke 201 circular groove 21 circular groove 22 engaging convex part 3 magnetic element 300 magnetic element 4 coil 400 coil 5 diaphragm 500 diaphragm 6 cover 600 cover

Claims (3)

[Utility model registration claims] 1. A frame, a yoke, a magnetic element,
A speaker comprising a coil, a vibrating membrane, and a cover, wherein the yoke has a circular groove formed with a hole at a center portion, and a plurality of engaging projections formed integrally on an outer peripheral surface. The frame forms a circular hole, and an engagement groove corresponding to the engagement protrusion of the yoke is formed on the inner edge of the circular hole, respectively. The engagement protrusion of the yoke is formed in the engagement groove of the frame. A magnetic element having the coil wound around the circular groove of the yoke, a vibrating membrane attached thereto, and the cover provided. 2. The loudspeaker according to claim 1, wherein a protection wall extending downward and protecting the yoke is formed integrally with an inner edge of the circular hole of the frame. 3. The engagement protrusion of the yoke is formed one at each of three equally-divided positions on the circumference, and the fitting grooves of the frame corresponding to the engagement protrusions also have three circumferences. The three fitting grooves are formed one by one at equally dividing positions, and each of the three fitting grooves is formed with a notch portion having an appropriate length extending horizontally from the bottom in the same direction. Item 7. The speaker according to Item 1.