CN219038177U

CN219038177U - Noise test equipment

Info

Publication number: CN219038177U
Application number: CN202320146889.9U
Authority: CN
Inventors: 王金勇; 黄琼; 陈晓波
Original assignee: Xiamen Liju Automation Technology Co ltd
Current assignee: Xiamen Liju Automation Technology Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-05-16
Anticipated expiration: 2033-01-17

Abstract

The utility model provides noise testing equipment, which comprises a testing cabinet, wherein the testing cabinet is provided with a mute chamber and a jig drawer, and one side of the mute chamber is provided with a window for the jig drawer to be pulled out; the product to be tested is placed in the jig drawer and is transferred into the mute chamber through the jig drawer; the inside of silence cavity is equipped with the lift noise detection subassembly to go up and down to different positions and to the test product that awaits measuring on the tool drawer carries out noise detection. According to the utility model, the noise test of steering wheel touch control is automatically realized, and the test efficiency and the test accuracy are improved.

Description

Noise test equipment

Technical Field

The utility model relates to the technical field of noise testing, in particular to noise testing equipment.

Background

With the rapid development of the age, automobiles become an indispensable riding tool for people to travel. The components on the vehicle must be subjected to a rigorous test to be usable, and in particular the steering wheel controlling the vehicle, performance testing of which is more important.

In the prior art, no device for detecting the touch noise of the steering wheel is available, and detection and judgment are mostly carried out manually, on one hand, in the test process, the steering wheel touch is required to be operated to make sound, and in the process, the steering wheel touch is easily interfered by the outside, so that the test result is inaccurate; on the other hand, the detection efficiency is low by adopting a manual detection mode, and the condition of manual misjudgment is easy to occur.

Disclosure of Invention

Therefore, the utility model provides the noise testing equipment, which is used for automatically realizing the noise testing of the steering wheel touch control and improving the testing efficiency and the testing accuracy.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the noise testing equipment comprises a testing cabinet, wherein the testing cabinet is provided with a mute chamber and a jig drawer, and a window for the jig drawer to pull is formed in one side of the mute chamber; the product to be tested is placed in the jig drawer and is transferred into the mute chamber through the jig drawer; the inside of silence cavity is equipped with the lift noise detection subassembly to go up and down to different positions and to the test product that awaits measuring on the tool drawer carries out noise detection.

Further, the lifting noise detection component comprises a mounting seat fixedly arranged in the silent cavity, a lifting driving part fixedly arranged on the mounting seat, a transverse conveying driving part and a microphone, wherein the output end of the transverse conveying driving part is connected with the lifting driving part, the output end of the lifting driving part is connected with the microphone, and the transverse conveying driving part is matched with the lifting driving part to drive the microphone to convey so as to carry out noise detection on products to be tested on the jig drawer at different positions.

Further, the driving source of the horizontal transfer driving unit and the driving source of the lifting driving unit are respectively covered with a soundproof cover.

Further, the jig drawer comprises a transverse driving assembly, a jig and a drawer sealing door plate, wherein the jig is fixedly connected with the transverse driving assembly, the size of the drawer sealing door plate is corresponding to that of a window of the mute chamber, so that when the transverse driving assembly drives the jig and the drawer sealing door plate to move towards the inside of the mute chamber, the drawer sealing door plate covers the window, and the jig and a product to be detected arranged on the jig are sealed in the inside of the mute chamber.

Further, a drawer sealing door frame is arranged at the window, and the drawer sealing door plate moves under the drive of the transverse driving assembly so as to be tightly matched with the drawer sealing door frame.

Further, the drive source of the lateral drive assembly is located outside the mute chamber.

Further, the inner surface of the cavity of the mute cavity is provided with a sound insulation material layer.

Further, the sound insulation material layer includes at least three-layer, follows the inside of silence cavity outwards is sound insulation sponge, sound insulation felt and acoustic celotex board in proper order.

The technical scheme provided by the utility model has the following beneficial effects:

firstly, through the drawing and pulling cooperation of the mute chamber on the test cabinet and the jig drawer, the utility model can realize the sealing of the mute chamber after the product to be tested is filled into the mute chamber, reduce the interference from the outside, ensure the accuracy of the subsequent noise detection of the product to be tested, automatically realize the noise detection of the product to be tested and improve the detection efficiency;

and secondly, the lifting noise detection component arranged in the mute chamber can lift to different positions to detect noise of the product to be tested, so that detection of a plurality of sites of the product to be tested is realized, and the noise detection requirement of the product to be tested is met.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 shows a cross-sectional view of the present utility model;

FIG. 3 is a schematic diagram of a frame of a mute chamber of the present utility model;

FIG. 4 is a schematic diagram of a fixture drawer according to the present utility model;

FIG. 5 is a second view of another angle of the jig drawer according to the present utility model;

fig. 6 is a schematic structural diagram of a lift noise detecting assembly according to the present utility model.

Description of the reference numerals:

10-a test cabinet;

1-a mute chamber, 11-a window, 12-a sound insulation material layer, 121-a sound insulation sponge, 122-a sound insulation felt, 123-a sound insulation plate, 13-a bottom plate of the mute chamber 1 and 14-a drawer sealing door frame;

2-jig drawers, 21-transverse driving components, 22-jigs and 23-drawer sealing door plates;

3-lifting noise detection assembly, 31-mounting seat, 32-lifting driving part, 33-transverse transfer driving part, 34-microphone and 35-sound-proof cover.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The utility model will now be further described with reference to the drawings and detailed description.

Referring to fig. 1 to 6, as a preferred embodiment of the present utility model, a noise testing apparatus is provided, which includes a testing cabinet 10, wherein the testing cabinet 10 is provided with a mute chamber 1 and a jig drawer 2, and a window 11 for drawing the jig drawer 2 is opened at one side of the mute chamber 1; the product to be tested is placed in the jig drawer 2 and is transferred into the mute chamber 1 through the jig drawer 2; the inside of silence cavity 1 is equipped with lift noise detection subassembly 3 to go up and down to different positions and carry out noise detection to the product that awaits measuring on the tool drawer 2. According to the embodiment, through the drawing and pulling cooperation of the mute chamber 1 and the jig drawer 2 on the test cabinet 10, after the product to be tested is filled into the mute chamber 1, the mute chamber 1 can be sealed, external interference is reduced, and the accuracy of noise detection of the product to be tested is ensured; meanwhile, the lifting noise detection component 3 arranged in the mute chamber 1 can lift to different positions to detect noise of the product to be tested, so that detection of a plurality of sites of the product to be tested is realized, and the noise detection requirement of the product to be tested is met.

In this embodiment, the touch noise of the steering wheel is taken as an example to be detected. In this embodiment, the X-axis, the Y-axis and the Z-axis are defined as three coordinate axes of a space rectangular coordinate system, wherein the height direction of the test cabinet 10 is taken as the Z-axis direction, and the length direction of the test cabinet 10 is taken as the X-axis direction.

As shown in fig. 2, the inner surface of the cavity of the mute chamber 1 is provided with a sound insulation material layer 12. Further, the sound insulation material layer includes at least three layers, namely a sound insulation sponge 121, a sound insulation felt 122 and a sound insulation board 123 from inside to outside of the silence chamber 1. The silence cavity 1 of this embodiment adopts the structure of multilayer sound insulation material layer to guarantee the sound insulation effect of silence cavity 1, avoid receiving external influence to the noise test of product, also can effectively eliminate the product echo simultaneously, avoid product noise to leak.

Referring to fig. 3 to 4, the jig drawer 2 includes a transverse driving assembly 21, a jig 22 fixedly connected with the transverse driving assembly 21, and a drawer sealing door plate 23, wherein the jig 22 is used for placing products, and the size of the drawer sealing door plate 23 is corresponding to that of the window 11 of the silence chamber 1, so that when the transverse driving assembly 21 drives the jig 22 and the drawer sealing door plate 23 to move towards the interior of the silence chamber 1, the drawer sealing door plate 23 covers the window 11, so that the jig 22 and the products to be detected arranged on the jig 22 are sealed in the interior of the silence chamber 1. Specifically, the transverse driving component 21 is an electric cylinder, and the output end of the electric cylinder is fixedly connected with the jig 22 and the drawer sealing door plate 23 and is driven by the electric cylinder to move transversely. Of course, in other embodiments, the transverse driving assembly 21 may be a motor-driven screw rail assembly or a motor-driven belt rail assembly, which are not illustrated herein. Wherein the drive source of the lateral drive assembly 21 is located outside the silence chamber 1 in order to reduce the influence of the drive source of the lateral drive assembly 21 on the noise detection structure; specifically, the driving source of the transverse driving assembly 21 is fixedly arranged on the outer side of the bottom plate 13 of the mute chamber 1.

Wherein, in order to ensure the tight connection between the window 11 of the mute chamber 1 and the drawer sealing door plate 23, the drawer sealing door plate 14 is arranged at the window 11, and the drawer sealing door plate 23 is driven by the transverse driving component 21 to move so as to be tightly matched with the drawer sealing door plate 14. Specifically, the peripheries of the drawer sealing door frame 14 extend inwards to form continuous parts, and the drawer sealing door plate 23 is closely attached to the extending parts of the drawer sealing door frame 14, so that the sound insulation effect in the mute chamber 1 is improved. And further, the drawer sealing door plate 23 is also provided with a sound insulation material layer, and similarly, the sound insulation material layer is sequentially provided with a sound insulation sponge, a sound insulation felt and a sound insulation plate from inside to outside of the mute chamber 1.

In this embodiment, referring to fig. 5 and 6, the lifting noise detecting component 3 includes a mounting seat 31 fixedly disposed in the silence chamber 1, a lifting driving portion 32 fixedly disposed on the mounting seat 31, a transverse transfer driving portion 33, and a microphone 34, wherein an output end of the transverse transfer driving portion 33 is connected with the lifting driving portion 32, an output end of the lifting driving portion 32 is connected with the microphone 34, the transverse transfer driving portion 33 and the lifting driving portion 32 cooperate to drive the microphone 34 to transfer, so as to detect noise of the product to be tested on the jig drawer 2 at different positions. Specifically, the transverse transfer driving portion 33 and the lifting driving portion 32 may be motor-driven screw rod sliding rail assemblies, including assemblies such as a servo motor and a ball screw, and a driving manner of the motor-driven screw rod sliding rail assembly is a common technology in the art, and will not be described herein. Of course, in other embodiments, the lateral transfer driving portion 33 and the lifting driving portion 32 may be driving assemblies such as a belt and rail assembly driven by a motor, which is not limited herein. In order to avoid the influence on the noise detection result, the driving source (i.e., servo motor) of the lateral transfer driving unit 33 and the driving source (i.e., servo motor) of the elevation driving unit 32 are respectively covered with a soundproof cover 35 to isolate the noise of the driving source. The lifting driving part 32 is a Z-axis lifting driving component, lifting along the Z-axis direction, the transverse transfer driving part 33 is an X-axis transfer driving component, moving along the X-axis direction, and the transfer direction of the jig drawer 2 is transferring along the Y-axis direction, so that the noise detection component, namely the microphone 34, can stay at any position through the cooperation of the lifting noise detection component 3 and the jig drawer 2, so as to ensure the noise detection effect on the product.

In this embodiment, two sites of noise test are required for the touch of the steering wheel, the first site is detected at a position closer to the touch of the steering wheel, and the second site is detected at a position farther from the touch of the steering wheel. Specifically, the touch distance from the steering wheel is 150mm and the touch distance from the steering wheel is 650mm, however, in other embodiments, specific values of the touch distance from the steering wheel are not limited. In this way, when the product is transferred to the inside of the mute chamber 1 through the jig drawer 2, the lifting driving part 32 and the transverse transfer driving part 33 cooperate to drive the microphone 34 to descend to a position 150mm away from the product, so as to finish noise detection of the position; the rear elevation driving part 32 and the lateral transfer driving part 33 cooperate to drive the microphone 34 to rise to a position 650mm away from the product, thereby completing noise detection at the position.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A noise testing apparatus, characterized in that: the test cabinet is provided with a mute chamber and a jig drawer, and a window for the jig drawer to pull is formed in one side of the mute chamber; the product to be tested is placed in the jig drawer and is transferred into the mute chamber through the jig drawer; the inside of silence cavity is equipped with the lift noise detection subassembly to go up and down to different positions and to the test product that awaits measuring on the tool drawer carries out noise detection.

2. The noise testing apparatus according to claim 1, wherein: the lifting noise detection assembly comprises a mounting seat fixedly arranged in the silent cavity, a lifting driving part, a transverse conveying driving part and a microphone, wherein the lifting driving part, the transverse conveying driving part and the microphone are fixedly arranged on the mounting seat, the output end of the transverse conveying driving part is connected with the lifting driving part, the output end of the lifting driving part is connected with the microphone, and the transverse conveying driving part is matched with the lifting driving part to drive the microphone to convey so as to carry out noise detection on products to be tested on the jig drawer at different positions.

3. The noise testing apparatus according to claim 2, wherein: the driving source of the transverse transfer driving part and the driving source of the lifting driving part are respectively covered with a sound insulation cover.

4. The noise testing apparatus according to claim 1, wherein: the jig drawer comprises a transverse driving assembly, a jig and a drawer sealing door plate, wherein the jig is fixedly connected with the transverse driving assembly, the size of the drawer sealing door plate is corresponding to that of a window of the mute chamber, so that when the transverse driving assembly drives the jig and the drawer sealing door plate to move towards the interior of the mute chamber, the drawer sealing door plate covers the window, and the jig and a product to be detected arranged on the jig are sealed in the interior of the mute chamber.

5. The noise testing apparatus according to claim 4, wherein: the window is provided with a drawer sealing door frame, and the drawer sealing door plate moves under the drive of the transverse driving assembly so as to be tightly matched with the drawer sealing door frame.

6. The noise testing apparatus according to claim 4, wherein: the drive source of the transverse drive assembly is located outside the mute chamber.

7. The noise testing apparatus according to claim 1, wherein: and a sound insulation material layer is arranged on the inner surface of the cavity of the mute cavity.

8. The noise testing apparatus according to claim 7, wherein: the sound insulation material layer includes at least three-layer, follows the inside of silence cavity outwards is sound insulation sponge, sound insulation felt and acoustic celotex board in proper order.