Static detection device for noise reduction effect of mute cotton for automobile tire

Abstract

The utility model relates to the technical field of tire mute cotton, and provides an automobile tire mute cotton noise reduction effect static detection device which comprises a sound insulation bin, a bin cover and a noise display, the bin cover is hinged to the sound insulation bin through a hinge, and sound insulation cotton is fixedly installed on the inner wall of the sound insulation bin and one side of the bin cover. A sound level meter and an acrylic box are arranged in the sound insulation bin, the acrylic box is located on one side of the sound level meter, the sound insulation bin, a bin cover and sound insulation cotton are arranged, so that the sound level meter and the acrylic box can be located in a completely-closed space, and then different types of road noise are simulated through a loudspeaker; and then the sound intensity is measured through the sound level meter and is displayed on the noise display, so that the noise level when the mute cotton is installed or not installed can be measured and recorded, meanwhile, equipment such as the sound level meter can be prevented from being interfered by the outside, fine noise changes can be accurately captured, and the accuracy of a test result is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of tire noise reduction cotton technology, specifically to a static testing device for the noise reduction effect of noise reduction cotton for automobile tires. Background Technology

[0002] Tire noise reduction material is a technology that uses professional noise reduction material applied inside tires to absorb and mitigate the cavity noise generated when the tire hits the ground, thereby reducing tire noise. The noise reduction material is usually made of special polyurethane material, whose porous structure allows air vibration to generate friction, reducing vibration and noise.

[0003] Current methods for testing the noise reduction effect of tire sound-absorbing foam suffer from poor measurement accuracy. Sound level meters and other equipment are easily affected by external interference, making it impossible to accurately capture subtle noise changes, which in turn affects the test results. Therefore, there is a need for a static testing device for the noise reduction effect of automotive tire sound-absorbing foam. Utility Model Content

[0004] This invention proposes a static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires, which solves the problems in related technologies such as poor measurement accuracy and the fact that sound level meters and other equipment are easily affected by external interference, thus failing to accurately capture subtle noise changes and affecting the test results.

[0005] The technical solution of this utility model is as follows: A static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires, including a sound insulation chamber, a chamber cover and a noise display. The chamber cover is hinged to the sound insulation chamber by a hinge. Sound-absorbing cotton is fixedly installed on the inner wall of the sound insulation chamber and on one side of the chamber cover.

[0006] The soundproof chamber is equipped with a sound level meter and an acrylic box, with the acrylic box located on one side of the sound level meter. The acrylic box is equipped with sound-absorbing cotton and a speaker, with the speaker located inside the sound-absorbing cotton.

[0007] The speaker is provided with a cover on top, and a positioning component is provided on the cover.

[0008] The above technical solution can measure and record the noise level with and without sound-absorbing cotton installed. It also allows sound level meters and other equipment to be unaffected by external interference, thus accurately capturing subtle noise changes and effectively improving the accuracy of test results.

[0009] Preferably, a connecting rod is fixedly installed on one side of the compartment cover, an L-shaped piece is rotatably installed on the outer side wall of the connecting rod, a fixing post is fixedly installed on one side of the soundproof compartment, and the corner end of the L-shaped piece is engaged with the fixing post.

[0010] The above technical solution can ensure the stability of the bin cover's locking mechanism and prevent the cover from opening due to external vibrations.

[0011] Preferably, a fixing cylinder is fixedly installed on the top of the box cover, and the placement and positioning component is installed on the fixing cylinder.

[0012] The above technical solution makes it easy for people to pick up the lid, and thus make it easy to put the lid on the acrylic box or pick it up from the acrylic box.

[0013] Preferably, the placement and positioning component includes two inverted L-shaped positioning rods disposed on the box cover, and the two inverted L-shaped positioning rods are arranged at a 90-degree right angle to each other;

[0014] The outer wall of the fixed cylinder has four insertion slots arranged in a circular array, and one end of the inverted L-shaped positioning rod is inserted into the insertion slot.

[0015] The fixed cylinder is provided with a locking mechanism, and the bottom of the locking mechanism is inserted into the round hole on the inverted L-shaped positioning rod.

[0016] The above technical solution enables the lid to be easily aligned with the acrylic box, avoiding misalignment and ensuring the testing structure remains intact.

[0017] Preferably, the locking mechanism includes a T-shaped rod that is movably inserted into the fixed cylinder, a connecting plate that is fixedly installed at the bottom of the T-shaped rod, and four insertion rods that are sequentially fixedly installed in a circular array at the bottom of the connecting plate, with the bottom end of each insertion rod inserted into a circular hole on the inverted L-shaped positioning rod.

[0018] A spring is fitted on the outer wall of the T-shaped rod, and the spring is located between the plug rod and the fixed cylinder.

[0019] The above technical solution enables the inverted L-shaped positioning rod to be stably fixed on the box lid.

[0020] Preferably, a rectangular plate is fixedly installed on the top of the T-shaped rod, and the rectangular plate is located on the disc end of the T-shaped rod.

[0021] The above technical solution allows for easy manual upward pulling of the T-shaped rod, enabling the insertion rod to quickly exit the round hole.

[0022] Preferably, a square sealing ring is fixedly installed on one side of the compartment cover, and the sound insulation cotton on the compartment cover is located inside the square sealing ring.

[0023] The above technical solution improves the sealing effect between the soundproof chamber and the chamber cover.

[0024] The working principle and beneficial effects of this utility model are as follows:

[0025] 1. By setting up a soundproof chamber, chamber cover, and soundproof cotton, the sound level meter and acrylic box can be placed in a completely sealed space. Then, different types of road noise are simulated by a loudspeaker, and the sound intensity is measured by the sound level meter and displayed on the noise display. This allows for the measurement and recording of noise levels with and without soundproof cotton installed. At the same time, it also ensures that the sound level meter and other equipment are not affected by external interference, thus accurately capturing subtle noise changes and effectively improving the accuracy of test results.

[0026] 2. The placement and positioning components ensure that the lid can be easily aligned with the acrylic box, thus preventing misalignment and avoiding any impact on the testing structure. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This invention provides a schematic diagram of the internal structure of the soundproof chamber.

[0029] Figure 2 This is a schematic diagram of the overall structure proposed in this utility model;

[0030] Figure 3 A cross-sectional structural diagram of the acrylic box is provided for this utility model;

[0031] Figure 4 This utility model provides a structural schematic diagram of the placement and positioning component;

[0032] Figure 5 This utility model proposes Figure 2 A magnified structural diagram at point A in the diagram.

[0033] In the picture: 1. Soundproof chamber; 2. Chamber lid; 3. Soundproofing cotton; 4. Sound level meter; 5. Acrylic box; 6. Sound-absorbing cotton; 7. Speaker; 8. Box lid;

[0034] Positioning components; 91. Inverted L-shaped positioning rod; 92. Insertion slot; 93. Locking mechanism; 9301. T-shaped rod; 9302. Connecting plate; 9303. Insertion rod; 9304. Spring;

[0035] 10. Fixed cylinder; 11. Connecting rod; 12. L-shaped piece; 13. Fixed column; 14. Noise display. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0037] Example 1

[0038] Please see Figures 1 to 5 A static testing device for noise reduction effect of sound insulation cotton for automobile tires includes a sound insulation chamber 1, a chamber cover 2 and a noise display 14. The chamber cover 2 is hinged to the sound insulation chamber 1. Sound insulation cotton 3 is fixedly installed on the inner wall of the sound insulation chamber 1 and one side of the chamber cover 2.

[0039] A square sealing ring is fixedly installed on one side of the compartment cover 2, and the sound insulation cotton 3 on the compartment cover 2 is located inside the square sealing ring;

[0040] The soundproof chamber 1 is equipped with a sound level meter 4 and an acrylic box 5, with the acrylic box 5 located on one side of the sound level meter 4. The acrylic box 5 is equipped with sound-absorbing cotton 6 and a speaker 7, with the speaker 7 located inside the sound-absorbing cotton 6.

[0041] A cover 8 is provided above the speaker 7, and a positioning component 9 is provided on the cover 8.

[0042] This utility model provides a static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires. The device involves manually placing a sound level meter 4, an acrylic box 5 (without the sound-absorbing cotton 6 installed), and a box cover 8 into a soundproof chamber 1. The cover 2 is then manually closed, and with the help of a square sealing ring, the soundproof chamber 1 and the cover 2 are completely sealed. Different types of road noise are then simulated using a speaker 7. The sound level meter 4 measures the sound intensity and displays it on a noise display 14. Finally, the acrylic box 5 is manually removed, and the sound-absorbing cotton 6 is placed inside. Speaker 7 is placed inside sound-absorbing cotton 6. Then, acrylic box 5 is placed in sound insulation chamber 1 and, with the help of positioning component 9, the box cover 8 is quickly and neatly closed. Finally, different types of road noise are simulated through speaker 7, and sound level meter 4 measures the sound intensity and displays it on noise display 14. This allows for the measurement and recording of noise levels with and without sound-absorbing cotton 6 installed. It also ensures that equipment such as sound level meter 4 is not affected by external interference, thus accurately capturing subtle noise changes and effectively improving the accuracy of test results.

[0043] Furthermore, a fixing cylinder 10 is fixedly installed on the top of the box cover 8, and a positioning component 9 is installed on the fixing cylinder 10.

[0044] Specifically, the fixing cylinder 10 makes it easy for a person to pick up the box lid 8, and thus make it easy to put the box lid 8 on the acrylic box 5, or to pick it up from the acrylic box 5.

[0045] Furthermore, the positioning component 9 includes two inverted L-shaped positioning rods 91 disposed on the box cover 8, and the two inverted L-shaped positioning rods 91 are arranged at a 90-degree right angle to each other;

[0046] Four insertion slots 92 are sequentially arranged in a circular array on the outer side wall of the fixed cylinder 10, and one end of the inverted L-shaped positioning rod 91 is inserted into the insertion slot 92.

[0047] The fixed cylinder 10 is provided with a locking mechanism 93, and the bottom of the locking mechanism 93 is inserted into the round hole on the inverted L-shaped positioning rod 91.

[0048] Specifically, one end of the inverted L-shaped positioning rod 91 is manually inserted into the insertion slot 92. Under the action of the locking mechanism 93 and the round hole, the inverted L-shaped positioning rod 91 can be stably fixed on the box cover 8. Then, when the box cover 8 is closed later, the box cover 8 is manually pushed so that one side of the two inverted L-shaped positioning rods 91 contacts the front right side or the rear left side of the acrylic box 5, so that the box cover 8 can be easily aligned with the acrylic box 5, avoiding the phenomenon of the box cover 8 not being aligned with the acrylic box 5 and affecting the detection structure.

[0049] Furthermore, the locking mechanism 93 includes a T-shaped rod 9301 that is movably inserted into the fixed cylinder 10. A connecting plate 9302 is fixedly installed at the bottom of the T-shaped rod 9301. Four insertion rods 9303 are sequentially fixedly installed in a circular array at the bottom of the connecting plate 9302, and the bottom end of the insertion rod 9303 is inserted into the circular hole on the inverted L-shaped positioning rod 91.

[0050] A spring 9304 is fitted on the outer wall of the T-shaped rod 9301, and the spring 9304 is located between the plug rod 9303 and the fixed cylinder 10.

[0051] Specifically, the connecting plate 9302 is pushed by the elastic force of the spring 9304, so that the connecting plate 9302 can descend stably with the cooperation of the T-shaped rod 9301 and the fixed cylinder 10, so that the insertion rod 9303 can be inserted into the round hole on the inverted L-shaped positioning rod 91, thereby making the inverted L-shaped positioning rod 91 stably fixed on the box cover 8.

[0052] Furthermore, a rectangular plate is fixedly installed on the top of the T-shaped rod 9301, and the rectangular plate is located on the disc end of the T-shaped rod 9301.

[0053] Specifically, the rectangular plate allows for easy manual upward pulling of the T-shaped rod 9301, enabling the insertion rod 9303 to quickly disengage from the round hole.

[0054] Example 2

[0055] Based on Embodiment 1, in this embodiment: a connecting rod 11 is fixedly installed on one side of the cover 2, an L-shaped piece 12 is rotatably installed on the outer side wall of the connecting rod 11, a fixing post 13 is fixedly installed on one side of the soundproof compartment 1, and the corner end of the L-shaped piece 12 is engaged with the fixing post 13.

[0056] The technical solution provided in this embodiment is as follows: when the cover 2 is fastened to the soundproof compartment 1, the L-shaped part 12 on the connecting rod 11 is rotated manually, and its other end is engaged with the fixed post 13, thereby ensuring the stability of the cover 2 fastening and preventing the cover 2 from opening due to external vibrations.

[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires, comprising a sound insulation chamber (1), a chamber cover (2), and a noise display (14), characterized in that, The cover (2) is hinged to the soundproof compartment (1) by a hinge, and soundproof cotton (3) is fixedly installed on the inner wall of the soundproof compartment (1) and on one side of the cover (2). The soundproof chamber (1) is equipped with a sound level meter (4) and an acrylic box (5) respectively. The acrylic box (5) is located on one side of the sound level meter (4). The acrylic box (5) is equipped with a sound-absorbing cotton (6) and a speaker (7) respectively. The speaker (7) is located inside the sound-absorbing cotton (6). A cover (8) is provided above the speaker (7), and a positioning component (9) is provided on the cover (8).

2. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 1, characterized in that: A connecting rod (11) is fixedly installed on one side of the cover (2), and an L-shaped piece (12) is rotatably installed on the outer side wall of the connecting rod (11). A fixing column (13) is fixedly installed on one side of the soundproof compartment (1), and the corner end of the L-shaped piece (12) is engaged with the fixing column (13).

3. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 1, characterized in that: A fixing cylinder (10) is fixedly installed on the top of the box cover (8), and the placement and positioning component (9) is installed on the fixing cylinder (10).

4. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 3, characterized in that: The placement and positioning component (9) includes two inverted L-shaped positioning rods (91) disposed on the box cover (8), and the two inverted L-shaped positioning rods (91) are arranged at a right angle of ninety degrees to each other; The outer wall of the fixed cylinder (10) has four insertion slots (92) arranged in a circular array, and one end of the inverted L-shaped positioning rod (91) is inserted into the insertion slot (92). The fixed cylinder (10) is provided with a locking mechanism (93), and the bottom of the locking mechanism (93) is inserted into the round hole on the inverted L-shaped positioning rod (91).

5. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 4, characterized in that: The locking mechanism (93) includes a T-shaped rod (9301) that is movably inserted into the fixed cylinder (10). A connecting plate (9302) is fixedly installed at the bottom of the T-shaped rod (9301). Four plug-in rods (9303) are fixedly installed in a circular array at the bottom of the connecting plate (9302). The bottom end of the plug-in rod (9303) is inserted into the circular hole on the inverted L-shaped positioning rod (91). A spring (9304) is sleeved on the outer wall of the T-shaped rod (9301), and the spring (9304) is located between the plug rod (9303) and the fixed cylinder (10).

6. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 5, characterized in that: A rectangular plate is fixedly installed on the top of the T-shaped rod (9301), and the rectangular plate is located on the disc end of the T-shaped rod (9301).

7. The static testing device for the noise reduction effect of sound-absorbing cotton for automobile tires according to claim 1, characterized in that: A square sealing ring is fixedly installed on one side of the compartment cover (2), and the sound insulation cotton (3) on the compartment cover (2) is located inside the square sealing ring.

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