JPS6216058Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a microphone windshield member, and by configuring a substantially dome-shaped windshield member attached to the inner surface of the head of the microphone to have a substantially positive shape in the unfolded state, one type of windshield member can be created. An object of the present invention is to provide a microphone windshield member that can be applied to microphones of various shapes and that can be manufactured extremely efficiently and at low cost.

Many microphones have a windshield filter made of porous material built into the head. Conventionally, this windshield filter is made by putting a foamed resin material into a filter molding mold that matches the inner surface shape of the head of the microphone, and foaming it to form, for example, a dome shape. is installed inside the head of

However, the shape of the dome-shaped windshield filter constructed using a mold is made for a specific model of microphone, so if it is attached to a microphone with a different head shape, , the windshield effect is not good. Therefore, windshield filters must be manufactured in various dome shapes depending on the shape of the microphone head, and as a result, a large number of types must be manufactured, resulting in poor production efficiency and high costs. There is.

The present invention eliminates the above drawbacks, and examples thereof will be described below.

FIG. 1 is an explanatory diagram of the main parts of the microphone, and FIG. 2 is an explanatory diagram of the unfolded state of the microphone windshield member according to the present invention, which is installed inside the head half of the microphone.
Fig. 3 is an explanatory diagram of the microphone shown in Fig. 2 bent into a substantially dome shape before it is mounted inside the head of the microphone, and Fig. 4 is an explanatory diagram of the microphone mounted inside the half of the head of the microphone. .

In the figure, 1 is a microphone, 2 and 2' are the head halves of the microphone, and these head halves 2 and 2'
are integrally connected by screwing the connecting rings 3, 3' together. The head half 2 is a metal net formed into a substantially dome shape, and the head half 2' is a metal net formed into a substantially truncated cone shape.

The head halves 2 and 2' are designed to have as high an acoustic resistance as possible without significantly reducing sensitivity in order to reduce impulse-type excitation caused by wind noise when the microphone is used outdoors, for example. A relatively small porous windshield member is attached.

Among these windshield members, the windshield member attached to the head half 2, which has a substantially dome shape, is made of a porous foamed plastic material similar to that of a cushion, and its unfolded shape is shown in Figure 2. As shown, it is formed into a substantially positive shape. In this unfolded state, the plastic material 4 is formed into a substantially positive shape, and the tip edges of the protrusions 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ are configured in an arc shape, and the plastic material 4 is formed into a dome shape. When bent, the edges are planar and form an unbroken ring. For example, this approximately +-shaped plastic material is made of foamed resin and has a thickness of approximately 4 mm and a diameter of approximately 76 mm.
Cut the disk so that the tip width l ₁ of the protrusions 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ is approximately 35 mm, the root width l ₂ is approximately 32 mm, and the protrusion length l ₃ is approximately 22 mm. It was formed.

As described above, in order to attach the plastic material formed into a substantially positive shape into the head half body 2 in the unfolded state and use it as a windshield member, as shown in _FIG . ₂ , 4 ₃ , 4 ₄ are bent and fitted into the head half body 2 , the plastic material 4 becomes dome-shaped due to its own elasticity according to the inner surface shape of the head half body 2 , and this dome shape is the protrusion 4 ₁ ,
When 4 ₂ , 4 ₃ , and 4 ₄ partially overlap each other or there are gaps, the density becomes almost uniform, and the microphone's windshield effect is fully exhibited.

Note that when the plastic material 4 is bent into a dome shape, distortion occurs at the abutting portions of the protrusions 4 ₁ and 4 ₂ , 4 ₂ and 4 ₃ , 4 ₃ and 4 ₄ , and 4 ₄ and 4 ₁ . A small approximately circular notch ₅₁ , for example, approximately 4 mm in diameter, is provided at the boundary between the protrusions ₄₁ , _{42 , 42} and ₄₃ , ₄₃ and ₄₄ , 44 and ₄₁ to prevent 5 ₂ , 5 ₃ ,
₅₄ is preferable because distortion is less likely to occur.

In addition, in the above embodiment, the windshield member is formed into a substantially positive shape in the unfolded state, but this means that even if it is configured, for example, in a three-pronged or five-pronged shape in the unfolded state, it theoretically becomes a dome shape. Although it is bendable, for example, if a three-pronged shape is made into a dome shape, the dome shape is likely to be distorted, it is difficult to achieve a uniform density, and the windshield effect is insufficient. This is because if the shape is made into a dome shape, parts that overlap each other are likely to be formed, making it difficult to achieve uniform density and resulting in an insufficient windshield effect. In other words, the windshield member, which is formed by bending a planar shape into a dome shape, can best exhibit the windshield effect of the microphone when it has a substantially positive shape.

As mentioned above, the microphone windshield member according to the present invention is made of a porous material formed into a substantially positive shape in the unfolded state, and this porous material is bent into a substantially dome shape and attached to the inner surface of the head of the microphone. For example, it can be made by simply cutting foam material into a roughly positive shape, does not require a dome-shaped mold as in the past, and can be made extremely easily and at low cost.Also, one type of microphone can be used for multiple types of microphones. It can be used for many things, which increases production efficiency and reduces costs.Furthermore, it is easy to attach to microphones, and its windshield effect is comparable to that of conventional products molded into a dome shape. It has features such as being excellent.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the main parts of the microphone, Figs. 2 and 3 are explanatory diagrams of the microphone windshield member according to the present invention in its unfolded state or bent into a substantially dome shape, and Fig. 4 is an explanatory diagram of the head half of the microphone. It is an explanatory view of a state attached to a body. 2, 2'...Head half, 4...Plastic material, 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ ...Protrusion, 5 ₁ , 5
₂ , 5 ₃ , 5 ₄ ...notch portion.

Claims (1)

[Scope of utility model registration request] A microphone windshield member characterized in that it is made of a porous material formed into a substantially positive shape in an expanded state, and the porous material is bent into a substantially dome shape and attached to the inner surface of the head of the microphone.