Mechanical arm earphone testing device
By using a multi-stage motor drive and spring preload design, the inconvenience of headphone testing caused by differences in worker height and the problem of loose robotic arms were solved, thus improving the accuracy and stability of headphone testing.
Patent Information
- Application Number
- CN202520135945.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-20
AI Technical Summary
In existing technologies, differences in worker height make headphone testing inconvenient, the height of the robotic arm is unsuitable, affecting the accuracy and efficiency of test results, and loose bolts on the robotic arm cause stability problems.
The robot arm height is adjusted by a multi-stage motor drive, combined with a spring preload anti-loosening design, to ensure that the headphones are tested in the appropriate position, improving stability and accuracy.
This technology enables flexible adjustment of the robotic arm height based on the worker's height, ensuring accurate earpiece placement, improving the accuracy of test results and the stability of the robotic arm, and enhancing the efficiency of assembly line testing.
Smart Images
Figure CN223758394U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to earphone testing device technical field especially relates to a mechanical arm earphone testing arrangement. BACKGROUND
[0002] With the progress of science and technology and the improvement of people's living standards, the demand of consumers for electronic products is increasing, especially earphone as portable audio equipment, its market demand presents explosive growth. According to the data of market research agency, the global earphone market size expands year by year, which prompts earphone production enterprises to continuously expand production scale to meet market demand, and consumer electronics technology is continuously innovated, and earphone products are increasingly diversified and functional, such as the emergence of emerging products such as wireless earphone, noise reduction earphone, bluetooth earphone, which makes the earphone update speed faster. Enterprises need to quickly launch new products that meet market demand through efficient production lines and strict testing processes to maintain competitiveness.
[0003] In the prior art, the earphone testing link on the assembly line, the height of workers is different, this difference brings many inconveniences to the testing work, when the machine arm sends the earphone in front of the worker for testing, for the worker with relatively small stature, the height of the machine arm is often too high. They need to stand on tiptoe, stretch out their arms, or even have to exert effort to raise their heads to be able to reach the earphone. This laborious posture makes the worker's action not stable enough when wearing the earphone, and the flexibility and accuracy of the fingers will also be greatly discounted, it is difficult to accurately place the earphone in the correct position of the ear, and because of maintaining this unnatural posture for a long time, the worker's arms and neck are easily tired, and then affect the subsequent testing operation. During the testing process, the wearing position and angle of the earphone are crucial to the accuracy of the test results. If the earphone is not worn correctly, the transmission path of the sound signal will change, resulting in deviation of the test data. For example, if the earphone earplug part is not completely inserted into the ear canal, the sound will leak out from the gap between the earplug and the ear canal, so that the sound insulation effect and sound restoration degree of the earphone and other indicators cannot be accurately evaluated, so that the test results of the earphone tested by the worker with relatively short stature are often not accurate enough, which cannot truly reflect the actual performance of the earphone, thereby affecting the quality and efficiency of the entire assembly line earphone testing work. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the shortcomings in the prior art and provides a mechanical arm earphone testing device.
[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a mechanical arm earphone testing device, including fixed disc, first motor, second drive motor and test mac, the fixed disc upper end is fixed with fixed base, the fixed base surface is connected with the connecting fixed spare with screw thread, the fixed base is fixed with the support column through the connecting fixed spare in, the support column upper end is driven through first motor, the first motor surface is fixed with the first fixed ring, the first fixed ring side end is driven through second drive motor, the second drive motor surface is fixed with the second fixed ring, the second fixed ring upper end is fixed with the connecting column, the connecting column upper end is fixed with the third fixed ring, the third fixed ring is fixed with the third drive motor in, the third drive motor output is fixed with U pipe, the U pipe upper end is fixed with the fourth fixed ring, the fourth fixed ring is fixed with the fourth drive motor in, the fourth drive motor output is fixed with the fifth fixed ring, the fifth fixed ring is fixed with the fifth drive motor in, the fifth drive motor output is fixed with the sixth fixed ring, the sixth fixed ring is fixed with the sixth drive motor in, the sixth drive motor output is fixed with the fixed backing pad, the fixed backing pad front end is connected with the fixed plate spare with screw thread, the fixed plate spare upper end is fixed with the L-shaped plate spare, the L-shaped plate spare upper end is fixed with the human head mac.
[0006] Preferably, the fixed plate spare is internally fixed with a fixed ring, the fixed ring is internally slidably connected with a spring sheet, the fixed backing pad surface is threadedly connected with a fixed nut, and the fixed nut surface is slidably connected with the spring sheet inner wall. In the prior art, the mechanical arm bolt used for traditional earphone testing is prone to loosening due to the movement of the mechanical arm. This loosening phenomenon is very common in industrial applications, especially in the case of frequent movement of the mechanical arm, the bolt connection will be subjected to various pulsating loads, including vibration and impact loads. These repeated movements gradually offset the friction between the bolt and the connected parts, eventually causing the threads of the bolt to "loosen rotation", and the joint loses clamping force. To solve this problem, the utility model adds a pre-tightening force. After the spring sheet is flattened, it generates a continuous elastic force, which continuously maintains the friction force between the fixed nut and the fixed backing plate, generates a resistance torque, prevents the fixed nut from loosening, and thus improves the anti-loosening effect and increases the stability of the mechanical arm.
[0007] Preferably, the L-shaped plate spare surface is fixed with a triangular iron. The triangular iron, as a sturdy support, can effectively disperse and transmit the load from the upper structure, thereby enhancing the stability of the entire fixed base.
[0008] Preferably, the fixed disc is rotatably connected with a handle at the upper end, which makes the handling and moving of the fixed disc more convenient. The operator can easily lift or move the fixed disc through the handle, especially in scenarios that require frequent movement or adjustment of position, the convenience of the handle is particularly evident, thereby improving the handling efficiency.
[0009] Preferably, the bottom of the fixed disc is fixed with a rubber sleeve, which can form a cushion layer between the fixed disc and the contact component to reduce friction and wear, thereby prolonging the service life of mechanical parts. This wear-reducing feature is particularly important for frequently moving mechanical parts, effectively reducing maintenance costs and replacement frequency.
[0010] Preferably, the spring sheet adopts a hollow design, which allows the pressurized spring sheet to bend or deform more flexibly when subjected to pressure, thereby providing better elasticity. This design helps the spring sheet to quickly recover to its original state after being stressed, maintaining its functionality and stability.
[0011] Beneficial effects:
[0012] 1. In existing technologies, during the headphone testing process on an assembly line, workers of varying heights face numerous challenges. When the robotic arm delivers the headphones to the workers, the arm is often too high for shorter workers. They need to stand on tiptoe, stretch their arms, or even strain their heads to reach the headphones. This strenuous posture makes it difficult for workers to maintain stability when wearing the headphones, significantly reducing finger dexterity and precision, making it hard to place the headphones accurately in the ear. Furthermore, maintaining this unnatural posture for extended periods easily leads to arm and neck fatigue, affecting subsequent testing operations. During testing, the headphone's wearing position and angle are crucial to the accuracy of the results. If the headphones are not worn correctly, the sound signal transmission path changes, causing deviations in the test data. For example, if the earbud part of the headphones is not fully inserted into the ear canal, sound will leak out through the gap between the earbud and the ear canal, making it impossible to accurately evaluate the headphones' sound isolation and sound reproduction. Consequently, test results for headphones tested by shorter workers are often inaccurate and fail to truly reflect the headphones' actual performance, thus affecting the quality and efficiency of the entire headphone testing process on the assembly line. To address this issue, this invention employs a motor-driven system. When a worker needs to adjust the height of the robotic arm, the worker drives the rotation of the drive motors. The first drive motor drives the second drive motor horizontally, the second drive motor drives the third drive motor vertically, the third drive motor drives the fourth drive motor vertically, the fourth drive motor drives the fifth drive motor vertically, and the fifth drive motor drives the sixth drive motor horizontally. The control signals for each drive motor can be precisely controlled by the control system, ensuring stable operation of the headset within the required height range. This multi-level adjustment mechanism provides high flexibility and accuracy, meeting the needs of different testing scenarios.
[0013] 2. In existing technologies, bolts on robotic arms used for headphone testing are prone to loosening due to the movement of the robotic arm. This loosening phenomenon is very common in industrial applications, especially when the robotic arm moves frequently, and the bolt connection is subjected to various pulsating loads, including vibration and impact loads. These repetitive movements gradually offset the friction between the bolt and the connected parts, eventually causing the bolt threads to "rotate and loosen," and the joint to lose its clamping force. To address this problem, this invention uses a preload method. After the spring is flattened, it generates a continuous elastic force, which keeps the threaded connection between the fixing nut and the fixing washer constantly frictional, generating a resistance torque to prevent the fixing nut from loosening, thereby improving the anti-loosening effect and increasing the stability of the robotic arm. Attached Figure Description
[0014] Figure 1 is a schematic diagram of a three-dimensional structure of the utility model;
[0015] Figure 2 is a schematic diagram of a disc base structure of the utility model;
[0016] Figure 3 is a schematic diagram of a testing device structure of the utility model;
[0017] Figure 4 is a sectional view of the fixing device of the utility model.
[0018] Legend:
[0019] 1, fixed disc; 2, fixed base; 201, connecting fixing part; 202, support column; 203, first motor; 204, first fixed ring; 205, second driving motor; 206, second fixed ring; 207, connecting column; 208, third fixed ring; 209, third driving motor; 210, U tube; 211, fourth fixed ring; 212, fourth driving motor; 213, fifth fixed ring; 214, fifth driving motor; 215, sixth fixed ring; 216, fixed plate part; 217, L-shaped plate part; 218, head microphone; 219, test microphone; 3, fixed ring; 301, fixed nut; 302, spring sheet; 4, triangular iron. Specific embodiments
[0020] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0021] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiments
[0023] Reference Figures 1-4A mechanical arm earphone testing device, including fixed disc 1, first motor 203, second drive motor 205 and test 219, the upper end of fixed disc 1 is fixed with fixed base 2, the surface of fixed base 2 is threadedly connected with connecting fixing piece 201, the inside of fixed base 2 is fixed with support column 202 through connecting fixing piece 201, the upper end of support column 202 is driven through first motor 203, the surface of first motor 203 is fixed with first fixed ring 204, the side end of first fixed ring 204 is driven through second drive motor 205, the surface of second drive motor 205 is fixed with second fixed ring 206, the upper end of second fixed ring 206 is fixed with connecting column 207, the upper end of connecting column 207 is fixed with third fixed ring 208, the inside of third fixed ring 208 is fixed with third drive motor 209, the output end of third drive motor 209 is fixed with U tube 210, the upper end of U tube 210 is fixed with fourth fixed ring 211, the inside of fourth fixed ring 211 is fixed with fourth drive motor 212, the output end of fourth drive motor 212 is fixed with fifth fixed ring 213, the inside of fifth fixed ring 213 is fixed with fifth drive motor 214, the output end of fifth drive motor 214 is fixed with sixth fixed ring 215, the inside of sixth fixed ring 215 is fixed with sixth drive motor, the output end of sixth drive motor is fixed with fixed pad plate, the front end of fixed pad plate is threadedly connected with fixed plate piece 216, the upper end of fixed plate piece 216 is fixed with L-shaped plate piece 217, the upper end of L-shaped plate piece 217 is fixed with man head 218, in the prior art, the earphone testing link on the assembly line, the height of workers is different, this difference brings many inconveniences to the testing work, when the mechanical arm sends the earphone in front of the worker for testing, for the worker with relatively small stature, the height of the mechanical arm is often too high. They need to stand on tiptoe, stretch their arms, or even have to laboriously tilt their heads to be able to reach the earphone. This laborious posture makes the worker's action not stable enough when wearing the earphone, and the flexibility and accuracy of the fingers will also be greatly discounted, it is difficult to accurately place the earphone in the correct position of the ear, and, due to maintaining this unnatural posture for a long time, the arms and neck of the worker are easy to fatigue, thereby affecting the subsequent testing operation. During the testing process, the wearing position and angle of the earphone are crucial to the accuracy of the test result. If the earphone is not worn correctly, the transmission path of the sound signal will change, resulting in deviation of the test data.For example, if the earplug part of the earphone is not completely inserted into the ear canal, sound will leak out from the gap between the earplug and the ear canal, making it impossible to accurately evaluate indicators such as sound insulation and sound restoration of the earphone, so that the test results of the earphone for workers with shorter stature are often not accurate enough to truly reflect the actual performance of the earphone, thereby affecting the quality and efficiency of the entire assembly line earphone test work, in view of such problems, the utility model adopts the mode of motor driving, when the worker needs to adjust the height of the mechanical arm, the worker drives the rotation of the driving motor, the first driving motor drives the horizontal rotation of the second driving motor 205, the second driving motor 205 drives the vertical rotation of the third driving motor 209, the third driving motor 209 drives the vertical rotation of the fourth driving motor 212, the fourth driving motor 212 drives the vertical rotation of the fifth driving motor 214, and the fifth driving motor 214 drives the horizontal movement of the sixth driving motor, the control signals of each driving motor can be accurately controlled through the control system, ensuring that the headset 218 works stably within the required height range, and the multi-stage adjustment mechanism can provide high flexibility and accuracy to meet the needs of different test scenarios.
[0024] The fixed circular ring 3 is internally fixed in the fixed plate 216, the spring sheet 302 is slidably connected in the fixed circular ring 3, the fixed nut 301 is threadedly connected to the surface of the fixed pad, the surface of the fixed nut 301 is slidably connected with the inner wall of the spring sheet 302, the L-shaped plate 217 is fixed with the triangular iron 4 on the surface, the fixed disc 1 is rotatably connected with the handle at the upper end, the fixed disc 1 is fixed with the rubber sleeve at the bottom, and the spring sheet 302 is designed in a hollow manner.
[0025] The utility model discloses a working principle: when the worker needs to adjust the height of the mechanical arm, the worker drives the rotation of the driving motor, the first driving motor drives the horizontal rotation of the second driving motor 205, the second driving motor 205 drives the vertical rotation of the third driving motor 209, the third driving motor 209 drives the vertical rotation of the fourth driving motor 212, the fourth driving motor 212 drives the vertical rotation of the fifth driving motor 214, and the fifth driving motor 214 drives the horizontal movement of the sixth driving motor, the control signals of each driving motor can be accurately controlled through the control system, ensuring that the headset 218 works stably within the required height range, and the multi-stage adjustment mechanism can provide high flexibility and accuracy to meet the needs of different test scenarios.
[0026] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or only indicate that first feature horizontal height is higher than second feature. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or only indicate that first feature horizontal height is less than second feature.
[0027] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A mechanical arm earphone testing device, comprising a fixed disc (1), a first motor (203), a second driving motor (205) and a test microphone (219), characterized in that: The fixed disc (1) upper end is fixed with a fixed base (2), the fixed base (2) surface is threadedly connected with a connecting fixing part (201), the fixed base (2) is internally fixed with a support column (202) through the connecting fixing part (201), the support column (202) upper end is driven by a first motor (203), the first motor (203) surface is fixed with a first fixed ring (204), the first fixed ring (204) side end is driven by a second drive motor (205), the second drive motor (205) surface is fixed with a second fixed ring (206), the second fixed ring (206) upper end is fixed with a connecting column (207), the connecting column (207) upper end is fixed with a third fixed ring (208), the third fixed ring (208) is internally fixed with a third drive motor (209), the third drive motor (209) output end is fixed with a U tube (210), the U tube (210) upper end is fixed with a fourth fixed ring (211), the fourth fixed ring (211) is internally fixed with a fourth drive motor (212), the fourth drive motor (212) output end is fixed with a fifth fixed ring (213), the fifth fixed ring (213) is internally fixed with a fifth drive motor (214), the fifth drive motor (214) output end is fixed with a sixth fixed ring (215), the sixth fixed ring (215) is internally fixed with a sixth drive motor, the sixth drive motor output end is fixed with a fixed backing plate, the fixed backing plate front end is threadedly connected with a fixed plate part (216), the fixed plate part (216) upper end is fixed with an L-shaped plate part (217), the L-shaped plate part (217) upper end is fixed with a human head microphone (218).
2. The mechanical arm earphone testing device according to claim 1, wherein: The fixed plate part (216) is internally fixed with a fixed circular ring (3), the fixed circular ring (3) is internally slidably connected with a spring sheet (302), the fixed backing plate surface is threadedly connected with a fixed nut (301), and the fixed nut (301) surface is slidably connected with the inner wall of the spring sheet (302).
3. The mechanical arm earphone testing device according to claim 1, wherein: The L-shaped plate part (217) surface is fixed with a triangular iron (4).
4. The mechanical arm earphone testing device according to claim 1, wherein: The fixed disc (1) upper end is rotatably connected with a handle.
5. The mechanical arm earphone testing device according to claim 1, wherein: The fixed disc (1) bottom is fixed with a rubber sleeve.
6. The mechanical arm earphone testing device according to claim 2, characterized in that: The spring sheet (302) adopts a hollow design.