Multifunctional sensor

Abstract

The utility model discloses a multifunctional sensor, which comprises a shell and a sound receiving cavity arranged on the shell, the vibrating diaphragm is arranged at the port of the sound receiving cavity, and a lug boss is arranged on the bottom side of the vibrating diaphragm; the rotating piece is arranged at the port of the sound receiving cavity in a circumferential rotating manner and is used for locking the vibrating diaphragm; the sealing ring is located between the end opening of the sound receiving cavity and the vibrating diaphragm, the protruding part and the inner wall of the sealing ring form a closed cavity in a surrounding mode when the vibrating diaphragm is in a locked state, and a suction hole used for sucking air in the closed cavity is formed in the sealing ring. According to the multifunctional sensor, the gap between the vibrating diaphragm and the end opening of the sound receiving cavity is filled through deformation of the sealing ring, water leakage is prevented, suction can be carried out on the suction hole, the closed cavity is in a negative pressure state, the sealing ring and the vibrating diaphragm are tightly attached together through air pressure, the vibrating diaphragm is further prevented from falling off, repeated pasting is not needed, and the working efficiency is improved. And the performance of the vibrating diaphragm can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and more specifically to a multi-functional sensor. Background Art

[0002] A multi-functional sensor is a sensor that can detect and measure multiple parameters. It can simultaneously measure multiple environmental parameters such as temperature, humidity, pressure, and sound, thereby providing more comprehensive environmental information.

[0003] Combined with the publication number CN 210065158 U and the publication date February 14, 2020, a multi-functional sensor is disclosed, which includes a substrate, a housing forming a packaging structure with the substrate, and a pressure sensor and an acoustic sensor disposed in the packaging structure; the packaging structure forms a mutually isolated first chamber and a second chamber, the pressure sensor is disposed in the first chamber, and the acoustic sensor is disposed in the second chamber; and, a waterproof adhesive is filled in the first chamber.

[0004] The vibrating diaphragm of the above technology is fixed in the avoidance groove of the substrate through the packaging adhesive, and the acoustic wave or water pressure signal is obtained through the vibrating diaphragm. However, after the packaging adhesive is wetted by water, it may become sticky, resulting in uneven changes in the adhesion force to the vibrating diaphragm, affecting the vibration of the vibrating diaphragm. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a multi-functional sensor to solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a multi-functional sensor, including a housing and a sound receiving cavity opened on the housing;

[0007] A vibrating diaphragm disposed at the port of the sound receiving cavity, with a convex portion provided on its bottom side;

[0008] A rotating member rotatably disposed circumferentially at the port of the sound receiving cavity and used to lock the rotation of the vibrating diaphragm;

[0009] A sealing ring located between the port of the sound receiving cavity and the vibrating diaphragm, and the convex portion encloses a closed chamber with the inner wall of the sealing ring in the locked state of the vibrating diaphragm, and a suction hole is opened on the sealing ring for sucking the air in the closed chamber.

[0010] Preferably, the sealing ring further includes a waterproof ring that can abut against the vibrating diaphragm, and the number of the waterproof rings is multiple.

[0011] Preferably, there is a clamping station for clamping the waterproof ring in the rotation stroke of the rotating member.

[0012] Preferably, the sealing ring further includes a hollow gasket for connecting multiple waterproof rings, and the suction hole is located on the hollow gasket.

[0013] Preferably, it further includes an air chamber, in which a driving piston that forms a piston fit with the air chamber is arranged, and the air chamber is communicated with the suction hole.

[0014] Preferably, the driving piston is slidably fitted with the rotating member to move.

[0015] In the above technical solution, a multi-functional sensor provided by the present utility model has the following beneficial effects: the gap between the vibration diaphragm and the port of the sound receiving cavity is filled by the deformation of the sealing ring to prevent water leakage, and the suction hole can be sucked, so that the closed chamber is in a negative pressure state, and the air pressure tightly adheres the sealing ring and the vibration diaphragm together, further preventing the vibration diaphragm from falling off, without the need for repeated pasting, and the performance of the vibration diaphragm can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and for those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The overall three-dimensional schematic diagram provided by the embodiment of the present utility model;

[0018] Figure 2 The sectional view of the sound receiving cavity and the inside of the housing provided by the embodiment of the present utility model;

[0019] Figure 3 The schematic diagram of the position of the rotating member and the waterproof ring in the locked state provided by the embodiment of the present utility model;

[0020] Figure 4 The schematic diagram of the structure of the rotating member, the driving piston and the air chamber provided by the embodiment of the present utility model;

[0021] Figure 5 The provided by the embodiment of the present utility model Figure 3 The enlarged schematic diagram of A in

[0022] Description of the reference numerals:

[0023] 1. Housing; 2. Sound receiving cavity; 21. Hopper-shaped part; 22. Inductive element; 3. Rotating member; 31. Driving piston; 32. Air chamber; 33. Connecting pipe; 4. Sealing ring; 41. Waterproof ring; 42. Suction hole; 43. Hollow gasket; 5. Vibration diaphragm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As Figures 1-5 shown, a multifunctional sensor includes a housing 1 and a sound receiving cavity 2 opened on the housing 1;

[0026] A vibrating diaphragm 5 is arranged at the port of the sound receiving cavity 2, and a convex portion is arranged on the bottom side thereof;

[0027] A rotating member 3 is circumferentially rotatably arranged at the port of the sound receiving cavity 2 and is used to lock the rotation of the vibrating diaphragm 5;

[0028] A sealing ring 4 is located between the port of the sound receiving cavity 2 and the vibrating diaphragm 5, and the convex portion and the inner wall of the sealing ring 4 enclose a closed chamber in the locked state of the vibrating diaphragm 5. A suction hole 42 for sucking air in the closed chamber is opened on the sealing ring 4.

[0029] Specifically, the sound receiving cavity 2 includes a funnel-shaped portion 21, and the inner diameter of the sound receiving cavity 2 decreases step by step along the sound receiving direction. An induction element 22 is arranged at the bottom of the sound receiving cavity 2, so that external sounds are picked up by the induction element 22 after passing through the sound receiving cavity 2, and the funnel-shaped portion 21 can play the role of expanding the sound receiving range, so that even a tiny sound can be obtained by the sound receiving cavity 2.

[0030] Further, place the sealing ring 4 into the port of the sound receiving cavity 2, then place the vibrating diaphragm 5 on the sealing ring 4. By rotating the rotating member 3 to press down the vibrating diaphragm 5, the vibrating diaphragm 5 drives the sealing ring 4 to move downward, and at the same time, the sealing ring 4 is squeezed into the space between the port of the sound receiving cavity 2 and the vibrating diaphragm 5. The rotating member 3 presses down on the vibrating diaphragm 5 to lock the vibrating diaphragm 5. Since the sealing ring 4 is deformable, the gap between the vibrating diaphragm 5 and the port of the sound receiving cavity 2 is filled by the deformation of the sealing ring 4 to prevent water leakage. At this time, a closed chamber is enclosed between the inner wall of the sealing ring 4 and the outer wall of the convex portion of the vibrating diaphragm 5. A suction mechanism such as a syringe or an air pump is used to suck the suction hole 42, so that the closed chamber is in a negative pressure state, and the air pressure tightly adheres the sealing ring 4 and the vibrating diaphragm 5 together, further preventing the vibrating diaphragm 5 from falling off. When it is necessary to release the vibrating diaphragm 5, then make the rotating member 3 deflect and no longer press in the locked state, and then inject air into the suction hole 42 through a syringe or an air pump. At this time, the sealing ring 4 can be manually peeled off from the vibrating diaphragm 5.

[0031] In the above technology, the gap between the vibrating diaphragm 5 and the port of the sound receiving cavity 2 is filled by the deformation of the sealing ring 4 to prevent water leakage, and the suction hole 42 can be sucked, so that the closed chamber is in a negative pressure state, and the air pressure tightly adheres the sealing ring 4 and the vibrating diaphragm 5 together, further preventing the vibrating diaphragm 5 from falling off. It is not necessary to paste repeatedly for many times, and the performance of the vibrating diaphragm 5 can be guaranteed.

[0032] As a further embodiment provided by the present utility model, the sealing ring 4 further includes a waterproof ring 41 that can abut against the vibration diaphragm 5, and the number of the waterproof rings 41 is multiple.

[0033] Specifically, the inner diameter of the waterproof ring 41 is smaller than that of the vibration diaphragm 5. First, place the sealing ring 4 at the port of the sound receiving cavity 2, and then place the vibration diaphragm 5 on the sealing ring 4. At this time, the waterproof ring 41 supports the vibration diaphragm 5 and they do not press against each other. Then rotate the rotating member 3, and press the vibration diaphragm 5 downward through the rotating member 3 into the inner wall of the waterproof ring 41. At this time, the vibration diaphragm 5 and the waterproof ring 41 press against each other and expand the waterproof ring 41 outward. At this time, the waterproof ring 41 abuts against the inner wall of the port of the sound receiving cavity 2, sealing the gap between the port of the sound receiving cavity 2 and the vibration diaphragm 5. The number of the waterproof rings 41 is multiple. When the number is two, the channel formed between the two waterproof rings 41 can be used to accommodate the edge of the vibration diaphragm 5 and abut against both the upper and lower sides of the vibration diaphragm 5, further improving the sealing effect.

[0034] As a further embodiment provided by the present utility model, there is a clamping station for clamping the waterproof ring 41 during the rotation stroke of the rotating member 3.

[0035] Specifically, when the rotating member 3 rotates, it presses the vibration diaphragm 5 downward into the inner wall of the waterproof ring 41. At this time, the vibration diaphragm 5 and the waterproof ring 41 press against each other and expand the waterproof ring 41 outward. Then the rotating member 3 reaches the clamping station to be clamped with the waterproof ring 41, restricting and locking the position of the waterproof ring 41 as Figure 3 shown in the state.

[0036] As a further embodiment provided by the present utility model, the sealing ring 4 further includes a hollow gasket 43 for connecting multiple waterproof rings 41, and the suction hole 42 is located on the hollow gasket 43.

[0037] Specifically, the inner diameter of the hollow gasket 43 is smaller than that of the vibration diaphragm 5. During the process of pressing the vibration diaphragm 5, the vibration diaphragm 5 will push open the waterproof ring 41 and abut against the hollow gasket 43. Since the hollow gasket 43 is a hollow structure, it can change its shape along the gap between the vibration diaphragm 5 and the port of the sound receiving cavity 2, playing a waterproof role and protecting the edge of the vibration diaphragm 5. At this time, the closed chamber is formed by the convex part on the lower side of the vibration diaphragm 5 and the inner wall of the hollow gasket 43.

[0038] As a further embodiment provided by the present utility model, it further includes an air chamber 32, in which a transmission piston 31 that forms a piston fit with the air chamber 32 is arranged, and the air chamber 32 is communicated with the suction hole 42.

[0039] Specifically, due to the sliding cooperation between the transmission piston 31 and the rotating part 3, when the rotating part 3 rotates to the locking position, the transmission piston 31 is driven to make a piston movement in the air cavity 32, so that the volume of the air cavity 32 becomes larger, and the suction hole 42 is sucked through the connecting pipe 33, so that the air in the closed chamber is sucked into the air cavity 32, and then the rotating part 3 reaches the locking position and is locked with the waterproof ring 41, so that the position of the transmission piston 31 is fixed, and a negative pressure environment is formed in the closed chamber, which presses the vibration diaphragm 5 and the hollow gasket 43 tightly to prevent the vibration diaphragm 5 from detaching; when the vibration diaphragm 5 needs to be released, the rotating part 3 is disengaged from the locking position, so that the transmission piston 31 squeezes the air cavity 32, and the air enters the closed chamber again, and the vibration diaphragm 5 and the hollow gasket 43 are no longer tightly attached.

[0040] Working principle: Place the sealing ring 4 in the port of the sound receiving cavity 2, and then place the vibrating diaphragm 5 on the sealing ring 4. At this time, the waterproof ring 41 supports the vibrating diaphragm 5 and does not press against each other. Then rotate the rotating part 3 to press the vibrating diaphragm 5 downward through the rotating part 3. The vibrating diaphragm 5 will squeeze the waterproof ring 41 and then press against the hollow gasket 43. The rotating part 3 is rotated to the locking position to lock with the waterproof ring 41, and the position of the waterproof ring 41 is limited and locked. Figure 3 In the state shown, during the rotation of the rotating part 3 to the fixing position, the transmission piston 31 is driven to make a piston movement in the air cavity 32, so that the volume of the air cavity 32 becomes larger, and the suction hole 42 is sucked through the connecting pipe 33, so that the air in the closed chamber is sucked into the air cavity 32, and then the rotating part 3 reaches the fixing position and is fixed with the waterproof ring 41, so that the position of the transmission piston 31 is fixed, and a negative pressure environment is formed in the closed chamber, which presses the vibration diaphragm 5 and the hollow gasket 43 tightly to prevent the vibration diaphragm 5 from detaching; when the vibration diaphragm 5 needs to be released, the rotating part 3 is deflected and separated from the fixing position, so that the transmission piston 31 squeezes the air cavity 32, and the air enters the closed chamber again, and the vibration diaphragm 5 and the hollow gasket 43 are no longer tightly attached. At this time, the sealing ring 4 can be manually peeled off the vibration diaphragm 5.

[0041] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multifunctional sensor, characterized in that: It comprises a housing (1) and a sound receiving cavity (2) opened on the housing (1); A vibrating diaphragm (5) is arranged at the end of the sound receiving cavity (2), and a convex portion is arranged on the bottom side thereof; A rotating member (3) is arranged at the end of the sound receiving cavity (2) in a circumferentially rotatable manner and is used to lock the vibration diaphragm (5); A sealing ring (4) is located between the port of the sound receiving cavity (2) and the vibration diaphragm (5), and the protrusion and the inner wall of the sealing ring (4) form a closed chamber when the vibration diaphragm (5) is locked, and a suction hole (42) for sucking air in the closed chamber is provided on the sealing ring (4).

2. A multifunctional sensor according to claim 1, characterized in that: The sealing ring (4) further comprises a waterproof ring (41) capable of abutting against the vibrating diaphragm (5), and the number of the waterproof rings (41) is plural.

3. A multifunctional sensor according to claim 2, characterized in that: There is a locking station for locking the waterproof ring (41) in the rotation stroke of the rotating member (3).

4. A multifunctional sensor according to claim 2, characterized in that: The sealing ring (4) further comprises a hollow gasket (43) for connecting a plurality of waterproof rings (41), and the suction hole (42) is located on the hollow gasket (43).

5. A multifunctional sensor according to claim 1, characterized in that: It also includes an air cavity (32) in which a transmission piston (31) is arranged to form a piston fit with the air cavity (32), and the air cavity (32) is communicated with the suction hole (42).

6. A multifunctional sensor according to claim 5, characterized in that: The transmission piston (31) and the rotating member (3) are slidably matched to move.

Images