An earcup anti-drop test device

Abstract

The utility model relates to ear cover anti -drop testing arrangement of anti -drop testing equipment field, including base, be equipped with pressure detection board, motor and limit rod on the base, motor drive screw rotation drives support plate to lift along the limit rod to adjust simulation ear height, satisfy different test demand. The inclined plate is installed on the support plate, and the hydraulic pole is equipped at both ends of the inclined plate, and the simulation ear is installed at the output end of the hydraulic pole. The laser range finder is formed by laser emission module and laser receiving module, and the simulation ear height is accurately measured, and the ear cover is dropped by cooperating with the contraction of the hydraulic pole, and the impact data are acquired. The pressure detection board side is equipped with elastic leather strip protection structure, and the ear cover is prevented from falling outside. The utility model solves the problem that the existing test device height adjustment is not flexible, data acquisition is complex and lacks protection, improves test accuracy and comprehensiveness, and reduces test cost.

Description

Technical Field

[0001] This utility model relates to the field of drop resistance testing equipment, specifically to an earmuff drop resistance testing device. Background Technology

[0002] As essential protective equipment for hearing and noise isolation, the stability and reliability of earmuffs are paramount. Among these, drop resistance is a key indicator, directly affecting whether the earmuffs can maintain their structural integrity and functional effectiveness if accidentally dropped, thus ensuring continued effective protection of the user's hearing. Therefore, developing specialized earmuff drop resistance testing devices to accurately assess their drop resistance has become a focus of research and attention in this field.

[0003] Existing devices for earmuff drop testing have significant shortcomings in height adjustment. Most devices cannot flexibly and precisely adjust the test height, making it difficult to meet the needs of different earmuff sizes and diverse testing scenarios, thus affecting the accuracy and comprehensiveness of test results. Regarding data acquisition, existing technologies lack effective means to simultaneously acquire earmuff drop height and impact data, typically requiring multiple, disparate devices and cumbersome procedures, increasing the complexity and cost of testing. Furthermore, during testing, earmuffs frequently fall accidentally outside the testing device, and existing devices lack effective protective structures to prevent such problems. Therefore, those skilled in the art have provided an earmuff drop testing device to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings and provide an earmuff drop test device. This device solves the problems of existing earmuff drop test devices being unable to flexibly and accurately adjust the test height, making it difficult to meet the needs of earmuffs of different specifications and diverse test scenarios. Furthermore, it lacks effective means to simultaneously obtain earmuff drop height and impact data as well as data on accidental earmuff drops, and lacks an effective protective structure.

[0005] The objective of this utility model is achieved through the following means: An earmuff drop resistance testing device includes a base, on which a pressure detection plate is mounted. A motor is mounted on one side of the pressure detection plate, and a limit rod is mounted on the side of the motor away from the pressure detection plate. A screw is driven and connected to the output end of the motor, and a support plate is mounted on the screw. An inclined plate is mounted on the end of the support plate above the pressure detection plate, and hydraulic rods are mounted at both ends of the inclined plate. A simulated ear is mounted on the output end of the hydraulic rod. A laser emitting module is mounted on the bottom side of the support plate, and a laser receiving module is mounted on the base. The laser emitting module and the laser receiving module are aligned axially. A bracket is provided around the periphery of the pressure detection plate, and a U-shaped plate is slidably sleeved on the bracket. An elastic strip is mounted on the bottom side of the U-shaped plate.

[0006] Furthermore, a screw hole is provided in the middle of the support plate, and the support plate is threadedly connected to the screw rod through the screw hole. A limiting hole is provided at the end of the support plate away from the inclined plate, and the support plate is slidably connected to the limiting rod through the limiting hole. The inner wall of the screw hole is provided with a wear-resistant layer to reduce wear when the support plate and the screw rod are threadedly connected.

[0007] Furthermore, the end of the inclined plate away from the support plate is inclined downwards, and mounting grooves are opened on both sides of the end of the inclined plate near the pressure detection plate. The hydraulic rod is inserted into the mounting groove, and the inner wall of the mounting groove is provided with anti-slip texture to enhance the stability when the hydraulic rod is fixedly inserted into the mounting groove.

[0008] Furthermore, a support rod is installed on the base, and a control panel is installed on the upper end of the support rod. The control panel is equipped with a display screen and operation buttons. The display screen is connected to the data measured by the laser emitting module and the laser receiving module, as well as the pressure data signal detected by the pressure detection plate. The operation buttons are electrically connected to the control motor and the hydraulic rod.

[0009] Furthermore, the end of the elastic strip away from the U-shaped plate is fixedly connected to the base, and the elastic strip surrounds the periphery of the pressure detection plate to prevent the earmuff from falling outside the pressure detection plate when it falls off.

[0010] The beneficial effects of this invention are as follows: By driving the screw to rotate via a motor, combined with the limiting action of the limiting rod on the support plate, the height of the support plate can be flexibly adjusted, thereby facilitating the adjustment of the simulated ear position to meet different testing needs; a laser rangefinder is formed by setting a laser emitting module and a laser receiving module, with the laser emitting end of the laser emitting module at the same height as the simulated ear, which can accurately measure the height of the simulated ear during the lifting and lowering of the support plate. Combined with the impact data of the earmuff falling onto the pressure testing plate due to the retraction of the hydraulic rod, the drop resistance test data of the earmuff can be accurately obtained and displayed and recorded through the control panel, making it convenient for testers to obtain and analyze; support rods, U-shaped plates, and elastic strips are set around the pressure testing plate. When the support plate drives the inclined plate to rise and fall, the U-shaped plate slides on the support rod and drives the elastic strip to stretch, thereby forming a protective enclosure around the pressure testing plate, effectively preventing the earmuff from falling outside the pressure testing plate and ensuring the normal conduct of the test. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of an earmuff drop resistance testing device according to the present invention; Figure 2 This is a structural schematic diagram of an earmuff drop resistance testing device according to the present invention; Figure 3 This is a structural schematic diagram of an earmuff drop resistance testing device according to the present invention; In the diagram: 1. Base; 2. Pressure detection plate; 3. Motor; 4. Screw; 5. Limiting rod; 6. Support plate; 601. Limiting hole; 602. Screw hole; 7. Inclined plate; 701. Mounting groove; 8. Hydraulic rod; 9. Simulation ear; 10. Laser emitting module; 11. Laser receiving module; 12. Support rod; 13. Control panel; 14. Bracket; 15. U-shaped plate; 16. Elastic strip. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] In this embodiment, refer to Figure 1 - Figure 3The specific implementation of the earmuff drop test device includes a base 1, a pressure detection plate 2 installed on the base 1, a motor 3 on one side of the pressure detection plate 2, a limit rod 5 on the side of the motor 3 away from the pressure detection plate 2, a screw 4 driven by the output end above the motor 3, a support plate 6 installed on the screw 4, an inclined plate 7 installed at the end of the support plate 6 above the pressure detection plate 2, hydraulic rods 8 at both ends of the inclined plate 7, a simulated ear 9 installed at the output end of the hydraulic rod 8, a laser emitting module 10 installed on the bottom side of the support plate 6, a laser receiving module 11 installed on the base 1, the laser emitting module 10 and the laser receiving module 11 are axially aligned, a bracket 14 is provided on the periphery of the pressure detection plate 2, a U-shaped plate 15 is slidably sleeved on the bracket 14, and an elastic strip 16 is installed on the bottom side of the U-shaped plate 15. A screw hole 602 is provided in the middle of the support plate 6, through which the support plate 6 is threadedly connected to the screw rod 4. A limiting hole 601 is provided at the end of the support plate 6 away from the inclined plate 7, through which the support plate 6 is slidably connected to the limiting rod 5. The inner wall of the screw hole 602 is provided with a wear-resistant layer to reduce wear when the support plate 6 and the screw rod 4 are threadedly connected. The end of the inclined plate 7 away from the support plate 6 is inclined downward. On both sides of the end of the inclined plate 7 near the pressure detection plate 2, there are mounting grooves 701, through which the hydraulic rod 8 is inserted. The inner wall of the mounting groove 701 is provided with anti-slip texture to enhance the connection between the hydraulic rod 8 and the mounting groove 2. To ensure stability during the fixed insertion of slot 701, a support rod 12 is installed on the base 1, and a control panel 13 is installed on the upper end of the support rod 12. The control panel 13 is equipped with a display screen and operation buttons. The display screen is connected to the data measured by the laser emitting module 10 and the laser receiving module 11, as well as the pressure data signal detected by the pressure detection plate 2. The operation buttons are electrically connected to the control motor 3 and the hydraulic rod 8. The end of the elastic strip 16 away from the U-shaped plate 15 is fixedly connected to the base 1. The elastic strip 16 surrounds the periphery of the pressure detection plate 2 to prevent the earmuff from falling outside the pressure detection plate 2 when it falls off.

[0014] The working principle of this device is as follows: A pressure detection plate 2 is installed on the base 1. A motor 3 is set on one side of the pressure detection plate 2. A limit rod 5 is set on one side of the pressure detection plate 2. The limit rod 5 and the motor 3 are fixedly installed with the base 1. The output end of the motor 3 is connected to a screw 4. A support plate 6 is set on the screw 4. A screw hole 602 is opened in the middle of the support plate 6 to be threadedly connected to the screw 4. A limit hole 601 is opened at the other end to be slidably connected to the limit rod 5. An inclined plate 7 is installed at the end of the support plate 6 above the pressure detection plate 2. The two ends of the inclined plate 7 are opened with mounting grooves 701. A hydraulic rod 8 is installed in the mounting grooves 701. A simulated ear 9 is installed at the output end of the hydraulic rod 8. The ear cover to be tested is covered on the simulated ear 9. Furthermore, when it is necessary to conduct a pressure resistance test on the earmuffs, the screw 4 is driven by the motor 3 to rotate. When the screw 4 rotates, the support plate 6 can be raised and lowered under the limit of the limit rod 5, thereby adjusting the height of the support plate 6. A laser emitting module 10 is installed on the bottom side of the support plate 6, and a laser receiving module 11 is set below the laser emitting module 10. The laser receiving module 11 is fixedly installed with the base 1. The laser receiving module 11 and the laser emitting module 10 form a laser rangefinder. The laser emitting end of the laser emitting module 10 is at the same height as the simulated ear 9. When the screw 4 drives the support plate 6 and the simulated ear 9 on the inclined plate 7 to rise and fall, the laser rangefinder can measure its height. Combined with the impact data of the earmuffs falling onto the pressure detection plate 2 when the hydraulic rod 8 retracts, the earmuff drop resistance test data is obtained. Finally, it is displayed and recorded through the control panel 13. A vertically arranged bracket 14 is installed around the pressure detection plate 2. The bracket 14 is fixedly installed on the base 1. A U-shaped plate 15 is slidably sleeved on the bracket 14. One end of the U-shaped plate 15 is fixedly installed on the end of the inclined plate 7. When the support plate 6 moves the inclined plate 7 up and down, the U-shaped plate 15 can slide up and down on the bracket 14. An elastic belt is connected to the bottom side of the U-shaped plate 15. The other end of the elastic belt 16 is fixedly connected to the base 1. When the support plate 6 moves up and down, the elastic belt 16 can be stretched through the U-shaped plate 15, thereby surrounding and protecting the periphery of the pressure detection plate 2 and preventing the earmuffs from falling outside the pressure detection plate 2.

[0015] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An earcup anti-drop test device comprising a base (1), characterized in that: A pressure detection plate (2) is installed on the base (1). A motor (3) is provided on one side of the pressure detection plate (2). A limit rod (5) is provided on the side of the motor (3) away from the pressure detection plate (2). A screw (4) is driven and connected to the output end of the motor (3). A support plate (6) is provided on the screw (4). An inclined plate (7) is installed at the end of the support plate (6) above the pressure detection plate (2). Hydraulic rods (8) are provided at both ends of the inclined plate (7). A simulated ear (9) is installed at the output end of the hydraulic rod (8). A laser emitting module (10) is installed on the bottom side of the support plate (6). A laser receiving module (11) is installed on the base (1). The laser emitting module (10) and the laser receiving module (11) are aligned on the axis. A bracket (14) is provided on the periphery of the pressure detection plate (2). A spiral plate (15) is slidably sleeved on the bracket (14). An elastic strip (16) is installed on the bottom side of the spiral plate (15).

2. The ear cover drop test device of claim 1, wherein: The support plate (6) has a screw hole (602) in the middle. The support plate (6) is threadedly connected to the screw rod (4) through the screw hole (602). The end of the support plate (6) away from the inclined plate (7) has a limiting hole (601). The support plate (6) is slidably connected to the limiting rod (5) through the limiting hole (601). The inner wall of the screw hole (602) is provided with a wear-resistant layer.

3. The ear muff drop test device of claim 1, wherein: The inclined plate (7) is inclined downward at the end away from the support plate (6). The inclined plate (7) has mounting grooves (701) on both sides of the end near the pressure detection plate (2). The hydraulic rod (8) is inserted into the mounting groove (701). The inner wall of the mounting groove (701) is provided with anti-slip texture.

4. The earmuff drop resistance testing device according to claim 1, characterized in that: A support rod (12) is installed on the base (1), and a control panel (13) is installed on the upper end of the support rod (12).

5. The ear cover drop test device of claim 1, wherein: The end of the elastic strip (16) away from the U-shaped plate (15) is fixedly connected to the base (1), and the elastic strip (16) surrounds the periphery of the pressure detection plate (2).

6. The earmuff drop resistance testing device according to claim 4, characterized in that: The control panel (13) is equipped with a display screen and operation buttons. The display screen is connected to the data measured by the laser emitting module (10) and the laser receiving module (11) as well as the pressure data signal detected by the pressure detection plate (2). The operation buttons are electrically connected to the control motor (3) and the hydraulic rod (8).

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