A low-temperature resistant microphone structure

Abstract

This utility model discloses a low-temperature resistant microphone structure, relating to the field of microphone technology. It includes a microphone, a housing, and a mounting base. The microphone comprises a microphone head and a microphone rod. The microphone rod enters the housing through a through-hole at the top of the housing. The end of the microphone rod is threaded into a threaded hole in the mounting base. The mounting base is detachably connected to the bottom of the housing. This utility model design tightly winds a heating wire into a groove on the outer surface of the microphone rod, ensuring a closer contact between the heating wire and the microphone rod, resulting in more efficient heat transfer. The heating wire is less prone to displacement during operation. Teflon tape secures the heating wire, ensuring stability. An insulating sealing gasket is fitted onto the microphone rod to enhance insulation, preventing cold air from entering the housing and avoiding internal heat loss, thus ensuring the stability of the sensor in low-temperature environments.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to a low-temperature resistant microphone structure. Background Technology

[0002] Microphones are used to detect sound wave signals and convert them into electrical signals. From increasingly high-performance and diverse diaphragm microphones to extremely small and widely used MEMS (Micro-Electro-Mechanical Systems) microphones, advancements in these technologies have driven progress in acoustics. In the development of microphone technology, the measurement of spatial acoustic information has always been a challenge, especially as applications such as sound source localization, speech enhancement, and sound intensity measurement become more widespread and important. Microphones that can only pick up sound signals omnidirectionally are gradually becoming insufficient to meet these needs.

[0003] In practical applications, the accuracy of existing microphones may be affected by changes in temperature and humidity. In particular, low temperatures have a significant impact on the sensors inside the microphone. Moreover, normal windproof covers can not only affect the accuracy of sensors but also reduce the lifespan of the microphone due to various reasons. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the existing technology, this utility model provides a low-temperature resistant microphone structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a low-temperature resistant microphone structure, including a microphone, a housing and a mounting base. The microphone includes a microphone head and a microphone rod. The microphone rod enters the housing through a through hole at the top of the housing. The end of the microphone rod is connected to a threaded hole in the mounting base through a thread. The mounting base is detachably connected to the bottom of the housing.

[0006] Furthermore, the outer surface of the microphone rod is provided with a spiral groove, in which a heating wire is tightly wound and fixed by Teflon tape.

[0007] Furthermore, a thermal insulation sealing gasket is fitted onto the microphone rod, the inner diameter of which matches the outer diameter of the microphone rod, and elastic thermal insulation cotton is provided on the inner surface of the thermal insulation sealing gasket, which fits snugly against the microphone rod.

[0008] Furthermore, the thermal insulation sealing gasket is fitted to the through hole and the threaded hole respectively.

[0009] Furthermore, the outer shell wall is provided with a heat insulation cavity, and the inner wall of the outer shell is provided with a heat insulation layer.

[0010] The beneficial effects of this utility model are as follows: the design of this utility model tightly wraps the heating wire in the groove on the outer surface of the microphone rod, making the contact between the heating wire and the microphone rod closer, which can transfer heat more efficiently. Moreover, the heating wire is not easy to shift during operation. The Teflon tape fixes the heating wire to ensure stability. The microphone rod is fitted with a heat-insulating sealing gasket, which cooperates with the through hole and the threaded hole respectively to enhance the heat insulation effect and form a good sealing structure to prevent cold air from entering the shell. At the same time, it can also avoid internal heat loss and ensure the stability of the sensor when working in a low-temperature environment. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the present invention;

[0013] Figure 2 This is an exploded view of the present invention;

[0014] Figure 3 This is a partial sectional view of the present invention.

[0015] In the diagram: 1. Microphone, 2. Housing, 3. Mounting base, 4. Through hole, 5. Thread, 6. Threaded hole, 7. Groove, 8. Heating wire, 9. Thermal insulation gasket, 10. Thermal insulation cavity, 11. Microphone head, 12. Microphone rod, 13. Thermal insulation layer. Detailed Implementation

[0016] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0017] A low-temperature resistant microphone structure includes a microphone 1, a housing 2, and a mounting base 3. The microphone 1 includes a microphone head 11 and a microphone rod 12. The microphone rod 12 enters the housing 2 through a through hole 4 at the top of the housing 2. The end of the microphone rod 12 is connected to a threaded hole 6 in the mounting base 3 via a thread 5. The mounting base 3 is detachably connected to the bottom of the housing 2 to ensure the stability of the sensor in low-temperature environments.

[0018] The outer surface of the microphone rod 12 is provided with a spiral groove 7, in which a heating wire 8 is tightly wound. The heating wire 8 is fixed by Teflon tape. The heating wire 8 is in closer contact with the microphone rod 12, which can transfer heat more efficiently. Moreover, the heating wire 8 is not easy to shift during operation. The Teflon tape has good high temperature resistance, low temperature resistance and insulation properties, which not only ensures the stability of the fixing of the heating wire 8, but also does not affect its performance due to temperature changes.

[0019] A thermal insulation sealing gasket 9 is fitted onto the microphone rod 12. The inner diameter of the thermal insulation sealing gasket 9 matches the outer diameter of the microphone rod 12. The inner surface of the thermal insulation sealing gasket 9 is provided with elastic thermal insulation cotton. The elastic thermal insulation cotton fits into the microphone rod 12 to enhance the thermal insulation effect. The thermal insulation sealing gasket 9 is respectively matched with the through hole 4 and the threaded hole 6 to form a good sealing structure, preventing cold air from entering the interior of the outer shell 2, and also preventing internal heat loss.

[0020] The outer shell 2 has a heat insulation cavity 10 in its wall and a heat insulation layer 13 in its inner wall to reduce the loss of heat inside the outer shell 2.

[0021] The mounting base 3 is connected to the outer casing 2 via a set screw, which facilitates later maintenance and repair. The mounting base 3 is provided with a wire hole through which the heating wire 8 passes, which facilitates the connection of the heating wire 8 to an external power source.

[0022] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A low-temperature resistant microphone structure, comprising a microphone (1), a housing (2), and a mounting base (3), characterized in that: The microphone (1) includes a microphone head (11) and a microphone rod (12). The microphone rod (12) enters the interior of the housing (2) through a through hole (4) at the top of the housing (2). The end of the microphone rod (12) is connected to the threaded hole (6) of the mounting base (3) by a thread (5). The mounting base (3) is detachably connected to the bottom of the housing (2).

2. The low-temperature resistant microphone structure according to claim 1, characterized in that, The outer surface of the microphone rod (12) is provided with a spiral groove (7), and a heating wire (8) is tightly wound in the groove (7). The heating wire (8) is fixed by Teflon tape.

3. The low-temperature resistant microphone structure according to claim 2, characterized in that, A heat-insulating sealing pad (9) is fitted on the microphone rod (12). The inner diameter of the heat-insulating sealing pad (9) matches the outer diameter of the microphone rod (12). The inner surface of the heat-insulating sealing pad (9) is provided with elastic heat-insulating cotton, which is in contact with the microphone rod (12).

4. The low-temperature resistant microphone structure according to claim 3, characterized in that, The thermal insulation sealing gasket (9) is fitted to the through hole (4) and the threaded hole (6) respectively.

5. The low-temperature resistant microphone structure according to claim 1, characterized in that, The outer shell (2) has a heat insulation cavity (10) in its wall and a heat insulation layer (13) in its inner wall.

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