CN220711656U

CN220711656U - Sound insulation box for microphone test

Info

Publication number: CN220711656U
Application number: CN202322274926.7U
Authority: CN
Inventors: 王鹤立
Original assignee: Huizhou Hongyitong Intelligent Technology Co ltd
Current assignee: Huizhou Hongyitong Intelligent Technology Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-04-02
Anticipated expiration: 2033-08-23

Abstract

The utility model discloses a sound insulation box for microphone testing, which comprises a base, a box body, two lifting cylinders and a testing jig, wherein the base is provided with a plurality of lifting cylinders; the box body comprises a lower cover and an upper cover; the lower cover is fixed on the base, the test fixture is arranged in the lower cover, and the upper cover is buckled on the lower cover; the fixed ends of the two lifting cylinders are respectively fixed on two opposite sides near the lower cover; one end of the upper cover, which is far away from the lower cover, is fixedly attached with a driving plate, and movable ends of the two lifting cylinders are respectively connected with preset parts on two opposite sides of the driving plate. According to the sound insulation box for microphone testing, when the lifting cylinder drives the driving plate to lift, the upper cover can be driven to be far away from or buckled on the lower cover, so that a sound insulation environment of a testing jig is canceled or formed. Therefore, the sealing and opening of the box body can be automatically realized, so that the testing efficiency and the degree of automation are improved.

Description

Sound insulation box for microphone test

[ field of technology ]

The utility model relates to the technical field of sound insulation boxes, in particular to a sound insulation box for microphone testing.

[ background Art ]

Currently, a device such as a motor that is prone to noise emission needs to be subjected to an audio test before assembly, that is, a microphone is used to collect the sound emitted by the motor, so as to detect whether the sound emitted by the motor is normal. In order to avoid the interference of external sound, a test fixture with a microphone is generally placed in the sound insulation box. However, existing sound-proof box opening or closing actions are typically performed manually, resulting in lower testing efficiency.

In view of the foregoing, it is desirable to provide a sound-proof housing for microphone testing that overcomes the above-described drawbacks.

[ utility model ]

The utility model aims to provide a sound insulation box for microphone testing, which aims to solve the problem that the existing sound insulation box is low in testing efficiency due to the fact that manual work is adopted in opening or closing actions, and achieves automatic opening and closing actions.

In order to achieve the above purpose, the utility model provides a sound insulation box for microphone testing, which comprises a base, a hollow box body, two lifting cylinders and a testing jig, wherein the hollow box body and the two lifting cylinders are vertically arranged on the base; the box body comprises a lower cover and an upper cover; the lower cover is fixed on the base, the test fixture is arranged in the lower cover, and the upper cover is buckled on the lower cover; the lifting cylinder comprises a fixed end and a movable end, and the fixed ends of the two lifting cylinders are respectively fixed on two opposite sides near the lower cover; a driving plate is fixedly attached to one end, far away from the lower cover, of the upper cover, and the movable ends of the two lifting cylinders are respectively connected with preset parts on two opposite sides of the driving plate; the lifting cylinder is used for driving the driving plate to lift so as to drive the upper cover to be far away from or buckled on the lower cover, so that the sound insulation environment of the test fixture is canceled or formed.

In a preferred embodiment, glass fiber sound absorbing plates are attached to the inner walls of the upper cover and the lower cover.

In a preferred embodiment, the base is further provided with an electric cabinet, one side of the lower cover, which is close to the electric cabinet, is provided with a wiring port, and the test fixture is electrically connected with the electric cabinet through the wiring port.

In a preferred embodiment, the test fixture comprises a bottom plate, a pair of support plates vertically arranged on the bottom plate, a fixed plate erected on the pair of support plates, a carrier and a triaxial driving bracket, wherein the carrier and the triaxial driving bracket are both arranged on the fixed plate; the carrier is used for placing a product to be tested, a microphone is arranged at the tail end of the triaxial driving support, and the microphone is hung right above the carrier.

In a preferred embodiment, the carrier is attached to the fixing plate through a rectangular bearing plate, four limiting blocks are further arranged on the fixing plate, and the four limiting blocks are respectively abutted to four top corners of the bearing plate.

In a preferred embodiment, the bearing plate is further provided with a limiting component; the limiting assembly comprises a first supporting block and a second supporting block which are respectively arranged on two opposite sides of the carrier, a rotating block is hinged to the first supporting block through a rotating shaft, a screw knob is arranged at one end, far away from the rotating shaft, of the rotating block, a thread groove is formed in one end, far away from the bearing plate, of the second supporting block, and the screw knob is used for being matched with the thread groove to press a product to be tested through the rotating block on the carrier.

In a preferred embodiment, a side of the fixing plate, which is far away from the carrier, is connected with the bottom plate through a plurality of support rods, so that the bottom plate and the fixing plate are arranged in parallel and at intervals.

In a preferred embodiment, the three-axis driving support comprises a Z-axis pole vertically fixed on the fixed plate, an X-axis pole slidably connected to the Z-axis pole through a first connecting block, a Y-axis pole slidably connected to the X-axis pole through a second connecting block, and a third connecting block arranged at the tail end of the Y-axis pole, and the microphone is arranged on the third connecting block; the X-axis marker post, the Y-axis marker post and the Z-axis marker post are mutually perpendicular.

According to the sound insulation box for microphone test, the driving plate is fixedly attached to one end, far away from the lower cover, of the upper cover, and the movable ends of the two lifting cylinders are respectively connected with preset parts on two opposite sides of the driving plate, so that when the lifting cylinders drive the driving plate to lift, the upper cover can be driven to be far away from or buckled on the lower cover, and the sound insulation environment of a test fixture is canceled or formed. Therefore, the sealing and opening of the box body can be automatically realized, so that the testing efficiency and the degree of automation are improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a sound-proof box for microphone testing provided by the utility model;

FIG. 2 is a perspective view of the sound-proof box for microphone testing shown in FIG. 1 with the box removed;

fig. 3 is a perspective view of the test fixture in the sound-proof box for microphone test shown in fig. 1.

Reference numerals in the drawings: 100. a sound-proof box for microphone testing; 200. a product to be tested; 10. a base;

20. a case; 21. a lower cover; 22. an upper cover; 23. a driving plate; 30. a lifting cylinder; 31. a fixed end;

32. a movable end; 40. testing a jig; 41. a bottom plate; 42. a support plate; 43. a fixing plate; 44. a carrier; 45. a triaxial driving bracket; 451. a first connection block; 452. a second connection block; 453. a third connecting block; 454. a Z-axis marker post; 455. an X-axis marker post; 456. y-axis mark post; 46. a carrying plate; 47. a limiting block; 48. a limit component; 481. a first support block; 482. a second support block; 483. a rotating shaft; 484. a rotating block; 485. a screw knob; 49. a support rod; 50. an electric control box.

[ detailed description ] of the utility model

In order to make the objects, technical solutions and advantageous technical effects of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the utility model, and not to limit the utility model.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In an embodiment of the present utility model, a sound insulation box 100 for microphone test is provided for performing audio test on a product 200 to be tested capable of emitting noise, such as a motor, to detect whether the motor is qualified.

As shown in fig. 1 to 3, the sound insulation box 100 for microphone test comprises a base 10, a hollow box body 20 and two lifting cylinders 30 which are all vertically arranged on the base 10, and a test fixture 40 arranged in the box body 20. Wherein the base 10 may be secured to the floor or other equipment counter.

Specifically, the case 20 includes a lower cover 21 and an upper cover 22. Wherein, the upper cover 22 and the lower cover 21 are hollow cuboid, and the sides close to each other are provided with openings, so that when the upper cover 22 and the lower cover 21 are buckled, a closed accommodating cavity structure is formed. The test fixture 40 is disposed inside the accommodating cavity, thereby forming a sound insulation environment and avoiding the interference of external sound to the test of the test fixture 40.

The lower cover 21 is fixed on the base 10, the test fixture 40 is disposed in the lower cover 21, and the upper cover 22 is fastened on the lower cover 21. That is, the lower cover 21 is fixedly provided, and the upper cover 22 is movably provided, so that the lower cover 21 is opened and closed by the upward and downward movement of the upper cover 22. When the upper cover 22 moves upward, the upper cover 22 is separated from the lower cover 21, so that an operator can take and place the test product from the test fixture 40; when the upper cover 22 moves downward to lock the lower cover 21, the test fixture 40 is isolated from the external environment to form a sound insulation environment for performing audio test on the product 200 to be tested.

Further, glass fiber sound absorbing plates (not shown) are attached to the inner walls of the upper cover 22 and the lower cover 21, thereby improving the sound insulation effect of the case 20.

Further, an electric cabinet 50 is further disposed on the base 10. A wiring port (not shown) is provided on one side of the lower cover 21 near the electric cabinet 50, and the test fixture 40 is electrically connected with the electric cabinet 50 through the wiring port. Therefore, a tester can control the test fixture 40 through the electric cabinet 50 to perform audio test. Wherein, the electric control box 50 can be provided with a control switch, a scram switch, an adjusting button and the like.

In the embodiment of the present utility model, the lifting cylinder 30 includes a fixed end 31 and a movable end 32.

Wherein the fixed ends 31 of the two lifting cylinders 30 are vertically fixed to opposite sides of the vicinity of the lower cover 21, respectively. For example, when the lower cover 21 is rectangular, the two fixing ends 31 are respectively disposed at two ends of one diagonal line to ensure the stress balance when the lifting cylinder 30 is driven.

A driving plate 23 is attached and fixed to one end of the upper cover 22 away from the lower cover 21. The driving plate 23 is horizontally disposed and may be coupled to the top of the upper cover 22 by means of screws or the like. The movable ends 32 of the two lifting cylinders 30 are respectively connected with preset parts on two opposite sides of the driving plate 23. Here, the movable end 32 is provided above the fixed end 31. The lifting cylinder 30 is used for driving the driving plate 23 to lift so as to drive the upper cover 22 to be far away from or buckled on the lower cover 21, so as to cancel or form a sound insulation environment of the test fixture 40.

In the embodiment of the utility model, as shown in fig. 3, the test fixture 40 includes a bottom plate 41, a pair of support plates 42 vertically disposed on the bottom plate 41, a fixing plate 43 mounted on the pair of support plates 42, a carrier 44 and a triaxial driving bracket 45 both disposed on the fixing plate 43.

The carrier 44 is provided with a fixing groove structure (not shown) that is contoured to the product 200 to be tested, and is used for placing the product 200 to be tested. For example, the product 200 to be tested is a cylindrical motor, and the carrier 44 may be provided with a semi-cylindrical fixing slot, and the motor is placed in the fixing slot.

Specifically, the carrier 44 is attached to the fixing plate 43 through a rectangular carrier plate 46. The carrier plate 46 is slidable relative to the surface on the fixed plate 43. Four limiting blocks 47 are further arranged on the fixing plate 43, and the four limiting blocks 47 are respectively abutted against four top corners of the bearing plate 46, so that the position of the bearing plate 46 is limited, and the bearing plate 46 is prevented from sliding on the fixing plate 43.

Further, a limiting component 48 is further disposed on the carrying plate 46. The limiting assembly 48 includes a first support block 481 and a second support block 482 disposed on opposite sides of the carrier 44, for example, the first support block 481 and the second support block 482 are disposed on left and right sides of a semi-cylindrical fixing groove. The first support block 481 is hinged with a rotating block 484 through a rotating shaft 483, one end, far away from the rotating shaft 483, of the rotating block 484 is provided with a screw knob 485, and the screw knob 485 can be screwed or loosened through hand holding. The end of the second support block 482 remote from the carrier plate 46 is provided with a screw groove (not shown). Screw knob 485 is used to mate with the screw channel to press the product 200 to be tested onto carrier 44 via turning block 484. When the product 200 to be tested needs to be pressed, screwing the screw knob 485; when it is desired to remove the product under test, the screw knob 485 is released and the end of the rotating block 484 remote from the rotating shaft 483 is disengaged from the second support block 482.

Further, the side of the fixing plate 43 away from the carrier 44 is connected to the bottom plate 41 through a plurality of support rods 49, so that the bottom plate 41 and the fixing plate 43 are disposed in parallel and spaced apart. Therefore, the contact area of the fixing plate 43 and the bottom plate 41 is only the sum of the cross-sectional areas of the plurality of support bars 49, which is small relative to the area of the fixing plate 43, thereby reducing the contact area of the fixing plate 43 and the bottom plate 41, and thus reducing the interference of external vibration.

In this embodiment, a microphone (not shown) is disposed at the end of the triaxial driving support 45 and is suspended directly above the carrier 44, so that sound emitted from the product 200 to be tested on the carrier 44 can be picked up to determine whether the sound emitted from the product 200 to be tested is normal.

Specifically, the triaxial driving support 45 includes a Z-axis pole 454 vertically fixed on the fixing plate 43, an X-axis pole 455 slidably connected to the Z-axis pole 454 through a first connection block 451, a Y-axis pole 456 slidably connected to the X-axis pole 455 through a second connection block 452, and a third connection block 453 disposed at the end of the Y-axis pole 456, and the microphone is disposed on the third connection block 453. The X-axis pole 455, the Y-axis pole 456, and the Z-axis pole 454 are perpendicular to each other in pairs and are provided with scales for fine adjustment to move the microphone directly above the carrier 44 to accommodate different products 200 to be tested. The position of each marker post can be adjusted relative to the connected connecting block, and the marker posts are locked through the locking accessory.

In summary, according to the sound insulation box 100 for microphone testing provided by the present utility model, the driving plate 23 is attached and fixed to the end of the upper cover 22 far from the lower cover 21, and the movable ends 32 of the two lifting cylinders 30 are respectively connected with the preset positions on two opposite sides of the driving plate 23, so that when the lifting cylinders 30 drive the driving plate 23 to lift, the upper cover 22 can be driven to be far from or buckled on the lower cover 21, so as to cancel or form the sound insulation environment of the test fixture 40. Therefore, the closing and opening of the case 20 can be automatically realized, thereby improving the testing efficiency and the degree of automation.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims

1. The sound insulation box for microphone test is characterized by comprising a base, a hollow box body, two lifting cylinders and a test jig, wherein the hollow box body and the two lifting cylinders are vertically arranged on the base; the box body comprises a lower cover and an upper cover; the lower cover is fixed on the base, the test fixture is arranged in the lower cover, and the upper cover is buckled on the lower cover; the lifting cylinder comprises a fixed end and a movable end, and the fixed ends of the two lifting cylinders are respectively fixed on two opposite sides near the lower cover; a driving plate is fixedly attached to one end, far away from the lower cover, of the upper cover, and the movable ends of the two lifting cylinders are respectively connected with preset parts on two opposite sides of the driving plate; the lifting cylinder is used for driving the driving plate to lift so as to drive the upper cover to be far away from or buckled on the lower cover, so that the sound insulation environment of the test fixture is canceled or formed.

2. The sound-proof box for microphone testing according to claim 1, wherein glass fiber sound-absorbing boards are attached to inner walls of the upper cover and the lower cover.

3. The sound insulation box for microphone testing according to claim 1, wherein the base is further provided with an electric cabinet, one side of the lower cover, which is close to the electric cabinet, is provided with a wiring port, and the testing jig is electrically connected with the electric cabinet through the wiring port.

4. The sound box for microphone testing according to claim 1, wherein the test fixture comprises a bottom plate, a pair of support plates vertically arranged on the bottom plate, a fixing plate erected on the pair of support plates, and a carrier and a triaxial driving bracket both arranged on the fixing plate; the carrier is used for placing a product to be tested, a microphone is arranged at the tail end of the triaxial driving support, and the microphone is hung right above the carrier.

5. The sound-proof box for microphone test according to claim 4, wherein the carrier is attached to the fixing plate through a rectangular bearing plate, four limiting blocks are further arranged on the fixing plate, and the four limiting blocks are respectively abutted to four vertex angles of the bearing plate.

6. The sound box for microphone testing according to claim 5, wherein the bearing plate is further provided with a limiting component; the limiting assembly comprises a first supporting block and a second supporting block which are respectively arranged on two opposite sides of the carrier, a rotating block is hinged to the first supporting block through a rotating shaft, a screw knob is arranged at one end, far away from the rotating shaft, of the rotating block, a thread groove is formed in one end, far away from the bearing plate, of the second supporting block, and the screw knob is used for being matched with the thread groove to press a product to be tested through the rotating block on the carrier.

7. The sound box for microphone testing according to claim 4, wherein a side of the fixing plate remote from the carrier is connected to the base plate through a plurality of support bars so that the base plate is disposed at a parallel interval with the fixing plate.

8. The sound box for microphone test according to claim 4, wherein the three-axis driving bracket includes a Z-axis pole vertically fixed to the fixed plate, an X-axis pole slidably connected to the Z-axis pole through a first connection block, a Y-axis pole slidably connected to the X-axis pole through a second connection block, and a third connection block provided at an end of the Y-axis pole, the microphone being provided on the third connection block; the X-axis marker post, the Y-axis marker post and the Z-axis marker post are mutually perpendicular.