Ear hook clamping force testing device

Abstract

This utility model discloses an ear hook clamping force testing device, which includes a mounting platform, a first support member, a second support member, a driving member, and a tension sensor. The first support member is fixedly connected to the mounting platform, and the second support member is slidably connected to the mounting platform. The first and second support members are positioned between the two ends of the ear hook, with their opposite sides slidably contacting the corresponding ends. One end of the driving member is connected to the mounting platform, and the other end is connected to the second support member. The driving member drives the second support member to move in a direction away from or towards the first support member to deform or restore the ear hook. In this ear hook clamping force testing device, only the first and second support members need to be inserted between the two ends of the ear hook. There is no need to assemble special clamps to position the ear hook, and no complex clamping actions are required, allowing the ear hook clamping force testing device to be directly deployed on the production line for full inspection.

Description

Technical Field

[0001] This utility model relates to the technical field of headphone testing equipment, and in particular to an ear hook clamping force testing device. Background Technology

[0002] In related technologies, the ear hook clamping force test for clip-on headphones mainly relies on a vertical tensile testing machine. This traditional testing method has significant limitations. First, a special fixture matching the headphone's shape needs to be customized before testing, which not only increases testing costs but also prolongs the preparation time. Second, because the headphone assembly process is time-consuming, in practice only sampling inspection or laboratory testing can be performed, making it impossible to meet the requirements of simultaneous batch testing on the production line. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an ear hook clamping force testing device, which can achieve quick clamping by having a first support member and a second support member extend between the two ends of the ear hook, facilitating the direct deployment of the ear hook clamping force testing device on the production line for full inspection.

[0004] In a first aspect, embodiments of this application provide an ear hook clamping force testing device, comprising:

[0005] Installation platform;

[0006] A first support member and a second support member, wherein the first support member is fixedly connected to the mounting platform and the second support member is slidably connected to the mounting platform, and the first support member and the second support member are disposed between the two ends of the ear loop and the opposite sides of the first support member and the second support member are used to slide in contact with the corresponding ends;

[0007] A driving component, one end of which is connected to the mounting platform and the other end of which is connected to the second support component, the driving component being used to drive the second support component to move in a direction away from or close to the first support component so as to deform or restore the ear hook;

[0008] A tension sensor is located at an internal connection node of the first or second support member.

[0009] The ear hook clamping force testing device according to this utility model embodiment has at least the following beneficial effects: The two ends of the ear hook contact the opposite sides of the two supports respectively, and the driving component pushes the second support away from the first support, causing the ear hook to deform. The sliding contact between the end of the ear hook and the support allows the ear hook to extend freely along the surface of the support without the need for additional clamps. When the ear hook reaches a preset deformation, the tension sensor directly outputs clamping force data by detecting the force state of the connection node of the support. After the test is completed, the driving component moves in the opposite direction to restore the ear hook to its original position, completing a single test cycle. The first and second supports do not require special clamps for positioning the ear hook; they only need to be inserted between the two ends of the ear hook. No complex clamping action is required before testing, allowing the ear hook clamping force testing device to be directly deployed on the production line for full inspection.

[0010] According to the first aspect, in one possible implementation, the first support member includes a fixed base and a first support plate, the fixed base being connected to the mounting platform, and the first support plate being connected to the fixed base via the tension sensor.

[0011] According to the first aspect, in one possible implementation, the first support plate has reinforcing folds along its opposite horizontal edges;

[0012] Alternatively, the first support plate includes a first plate and a second plate disposed opposite to each other along a first direction. The side of the first plate opposite to the second plate is used for sliding contact with the end of the ear hook. The side of the second plate away from the first plate is connected to the tension sensor, and the projection area of ​​the tension sensor on the first plate along the horizontal direction completely covers the sliding contact range between the end of the ear hook and the first plate.

[0013] According to the first aspect, in one possible implementation, the second support member includes a movable seat and a second support plate, the movable seat being slidably connected to the mounting platform, and the second support plate and the drive member being connected to the movable seat.

[0014] According to the first aspect, in one possible implementation, the ear hook clamping force testing device further includes a buffer, the buffer being configured to contact the second support member to reduce the moving speed of the second support member when the drive member drives the second support member to move in a direction away from the first support member.

[0015] According to the first aspect, in one possible implementation, the ear hook clamping force testing device further includes a limiting member connected to the mounting platform, the limiting member being configured to stop the second support member to limit the distance between the second support member and the first support member when the drive member drives the second support member to move in a direction away from the first support member.

[0016] According to the first aspect, in one possible implementation, the limiting member includes a mounting portion and a stop portion, the mounting portion being connected to the mounting platform, the stop portion being movably connected to the mounting portion along a first direction, and the stop portion being movable along a first direction to adjust the travel of the second support member.

[0017] According to the first aspect, in one possible implementation, the limiting element is a micrometer, which is connected to the mounting platform via a mounting base.

[0018] According to the first aspect, in one possible implementation, the ear hook clamping force testing device further includes a buffer;

[0019] The driving member drives the second support member to move in a direction away from the first support member so as to sequentially contact the buffer and the limiting member; and / or,

[0020] The buffer and the limiting member are located on both sides of the connection point between the driving member and the first support member.

[0021] According to the first aspect, in one possible implementation, the ear hook clamping force testing device further includes a protective cover, which is connected to the mounting platform and covers the first support member, the second support member, the drive member and the tension sensor, and has an operating port on the front side of the protective cover.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the ear hook clamping force testing device in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the test component on the mounting platform in one embodiment of the present invention;

[0026] Figure 3This is a schematic diagram of the ear hook clamping force testing device in another embodiment of the present invention.

[0027] Figure label:

[0028] 100. Install the platform;

[0029] 200. First support component; 210. Fixing base; 220. First support plate; 221. Reinforcing folded edge;

[0030] 300. Second support component; 310. Movable seat; 320. Second support plate;

[0031] 400. Drive components;

[0032] 500. Tension sensor;

[0033] 600, buffer;

[0034] 700. Limiting component; 711. Stop; 712. Mounting part; 721. Micrometer; 722. Mounting base;

[0035] 800. Protective cover; 810. Operating port;

[0036] 900. Ear hooks; Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0041] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] In existing technologies, the ear hook clamping force test of clip-on headphones is typically performed using a vertical tensile testing machine with custom-made fixtures. Because each headphone has a significantly different shape, a separate fixture needs to be designed, resulting in a significant time commitment for fixture assembly and debugging before testing. Traditional testing equipment is bulky and complex to operate, making it impossible to integrate with production line equipment; it can only be used for laboratory sampling inspections and is difficult to implement for batch testing on an assembly line.

[0043] To address the aforementioned problems, this application proposes an ear hook clamp holding force testing device. For example... Figure 1 and Figure 2 As shown, in some embodiments, the ear hook clamping force testing device includes a mounting platform 100, a drive component 400, a tension sensor 500, and two support components. The mounting platform 100 refers to the base structure that supports the test components, specifically a metal frame or composite material, providing a stable mounting reference for the support components and the drive component 400. The two support components are a first support component 200 and a second support component 300. The first support component 200 is a static support unit fixedly connected to the platform, and the second support component 300 is a movable support unit slidably connected to the platform, and the second support component 300 is slidably connected to the mounting platform 100. During the clamping force test, the first support member 200 and the second support member 300 are located between the two ends of the ear hook 900 and slide in contact with the corresponding ends; the driving member 400 refers to the mechanical actuator that provides power, which can be implemented by an electric push rod or a pneumatic cylinder. It controls the displacement of the second support member 300 through telescopic movement. The driving member 400 connects the mounting platform 100 and the second support member 300 to drive the second support member 300 to move; the tension sensor 500 refers to the detection element that measures the force on the connection node, which can be implemented by a strain gauge or piezoelectric sensor. The tension sensor 500 is set in the internal connection node of the first support member 200 or the second support member 300.

[0044] During the clamping force test, the two ends of the ear hook 900 contact the opposite sides of the two supports, respectively. The drive unit 400 pushes the second support 300 away from the first support 200, causing the ear hook 900 to deform. The sliding contact between the end of the ear hook 900 and the support allows the ear hook 900 to extend freely along the surface of the support without the need for additional clamps. When the ear hook 900 reaches the preset deformation, the tension sensor 500 directly outputs the clamping force data by detecting the force state of the connection node of the support. After the test is completed, the drive unit 400 moves in the opposite direction to restore the ear hook 900 to its original position, completing a single test cycle. In this embodiment, the first support 200 and the second support 300 do not require special clamps to position the ear hook 900. They only need to be inserted between the two ends of the ear hook 900. No complex clamping action is required before testing, allowing the ear hook clamping force testing device to be directly deployed on the production line for full inspection.

[0045] Furthermore, this embodiment enables the automatic adjustment function of the distance between the two supports to adapt to different product models through the cooperation of the sliding support and the driving component 400. This solution integrates the sensor into the force transmission node inside the support to directly obtain the load data generated by the deformation of the ear hook 900.

[0046] In some embodiments, the first support member 200 includes a fixed base 210 and a first support plate 220. The fixed base 210 is a base structure rigidly connected to the mounting platform 100, and can be implemented as a metal block with mounting holes. The function of the fixed base 210 is to provide a stable mounting foundation for the first support plate 220. The first support plate 220 is a supporting component that directly contacts the end of the ear hook 900, and can be implemented as a smooth aluminum alloy sheet. The function of the first support plate 220 is to form a sliding contact surface with the end of the ear hook 900. The first support plate 220 is connected to the fixed base 210 through a tension sensor 500. The tension sensor 500 is installed between the fixed base 210 and the first support plate 220 to collect clamping force data generated when the ear hook 900 deforms in real time.

[0047] Specifically, the fixed base 210 is rigidly supported by bolts to the mounting platform 100, and the first support plate 220 is flexibly connected to the fixed base 210 via a tension sensor 500, allowing for slight displacement. When the end of the ear hook 900 slides on the surface of the first support plate 220, the lateral force generated by the deformation of the ear hook 900 is transmitted to the tension sensor 500 through the first support plate 220. The tension sensor 500 converts the mechanical deformation into an electrical signal output. This embodiment achieves modularity of the support structure through a split design. The fixed base 210 serves as the mounting base, and the first support plate 220 can be quickly replaced or adjusted when it is worn or deformed. At the same time, the tension sensor 500 is directly integrated between the support plate and the fixed base 210, eliminating measurement errors caused by excessively long force transmission paths in traditional structures and improving measurement accuracy.

[0048] In the first example of the above embodiment, the first support plate 220 is provided with reinforcing folded edges 221 on both sides of the horizontal direction; the reinforcing folded edges 221 refer to the three-dimensional structure formed by bending the two sides of the body of the first support plate 220 perpendicular to the body, which can be achieved by stamping or welding process, thereby increasing the bending stiffness by increasing the moment of inertia of the cross section of the first support plate 220.

[0049] When the reinforced folded edge 221 structure is adopted, the folded parts on both sides of the support plate form a reinforcing rib with a groove-shaped cross section. Under the clamping force of the ear hook 900, the folded edge can effectively suppress the bending deformation of the support plate in the horizontal direction, thereby maintaining the stability of the measurement reference of the tension sensor 500.

[0050] In the second example of the above embodiment, the first support plate 220 includes a first plate and a second plate arranged opposite to each other in the front-back direction. The side of the first plate opposite to the second plate is used to slide in contact with the end of the ear hook 900. The side of the second plate away from the first plate is connected to the tension sensor 500. The projection area of ​​the tension sensor 500 on the first plate in the horizontal direction completely covers the sliding contact range between the end of the ear hook 900 and the first plate.

[0051] In this embodiment, the first plate and the second plate are connected as a single unit by a connecting structure such as side plates or support columns; or the first support plate 220 has a channel extending in the vertical direction, and the first plate and the second plate are the front and rear side plates surrounding the channel. In this embodiment, by separating the contact function and sensing function areas, the projection area completely covers all contact points between the end of the ear hook 900 and the first plate in the horizontal plane, ensuring that the force-bearing area and the measurement area completely coincide. This eliminates the problem of uneven stress distribution caused by local deformation of the support plate and avoids interference from structural deformation on the measurement results.

[0052] When a split plate structure is adopted, the first plate acts as a sliding contact component to bear the frictional force at the end of the ear hook 900, and the second plate acts as a force transmission component to transmit the load to the tension sensor 500. By limiting the sensor projection to cover the contact range, measurement errors caused by local deformation of the support plate or deviation of the load transmission path are avoided, which significantly improves the accuracy and repeatability of the ear hook 900 clamping force test.

[0053] In some embodiments, the second support member 300 includes a movable seat 310 and a second support plate 320. The movable seat 310 is a movable base that forms a sliding fit with the mounting platform 100, and can be implemented as a metal block with linear guide rails. Its sliding trajectory is constrained by the guide structure on the mounting platform 100 to ensure stable movement. The second support plate 320 is a supporting component that contacts the end of the ear hook 900, and can be implemented as a metal plate with a low-friction coating on its surface. The rigid connection between the second support plate 320 and the movable seat 310 can maintain the posture of the contact surface. Both the second support plate 320 and the drive member 400 are connected to the movable seat 310.

[0054] After the output end of the drive component 400 is fixed to the movable seat 310, the driving force acts directly on the movable seat 310, causing the movable seat 310 to move along the guide path of the mounting platform 100. This shortens the force transmission path, improves the test response speed, and meets the test efficiency requirements of batch testing on the production line. Furthermore, during the synchronous displacement of the second support plate 320 with the movable seat 310, the lateral force generated when the end of the ear hook 900 slides on the surface of the support plate is transmitted to the mounting platform 100 through the movable seat 310, preventing the support plate from deflecting. The movable seat 310, as the common connection point between the drive component 400 and the second support plate 320, forms a three-point force-bearing structure, ensuring a linear relationship between the drive stroke and the deformation of the ear hook 900. When the drive component 400 drives the movable seat 310 away from the first support component 200, the ear hook 900 is stretched and deformed. At this time, the contact pressure between the second support plate 320 and the end of the ear hook 900 is evenly distributed to the mounting platform 100 through the movable seat 310, preventing local stress concentration from affecting the test results.

[0055] In this embodiment, the driving component 400 only provides driving force, and the movement direction of the second support plate 320 is defined by the movable seat 310. The driving component 400 and the movable seat 310 can be connected by a structure such as a universal joint, thereby reducing the installation accuracy requirements of the driving component 400 and the movable seat 310 and avoiding movement jamming caused by slight deviations between the movement direction of the driving component 400 and the movement direction of the movable seat 310. The movable seat 310 and the mounting platform 100 are connected by a guide structure to maintain the smooth linear movement of the movable seat 310 and the second support plate 320, avoiding uneven force on the ear hook 900 caused by the offset of the support plate. The rigid connection between the movable seat 310 and the driving component 400 is specifically that the movable seat 310 and the mounting platform 100...

[0056] In some embodiments, the ear hook clamping force testing device may further include a buffer 600, which is a device that absorbs the kinetic energy of a moving component through physical damping. The buffer 600 is configured to contact the second support member 300 to reduce its moving speed when the drive member 400 drives the second support member 300 to move away from the first support member 200. When the drive member 400 pushes the second support member 300 to perform a test action of stretching the ear hook 900, the buffer 600 contacts the moving second support member 300. The buffer 600 converts the kinetic energy of the second support member 300 into thermal energy or elastic potential energy through its internal damping structure, causing the moving speed of the second support member 300 to decrease non-linearly after contact. This process occurs in the critical stage before the ear hook 900 is stretched to its maximum deformation. By controlling the speed decay curve, the inertial impact generated by the high-speed movement of the second support 300 is suppressed, preventing the ear hook 900 from undergoing unexpected deformation due to instantaneous overload. This ensures that the deformation process of the ear hook 900 remains within the elastic deformation range, avoiding plastic deformation of the ear hook 900 or distortion of clamping force data due to sudden speed changes. Simultaneously, by introducing a directional triggering buffer 600, the periodic wear of the connection structure between the drive component 400 and the support component can be reduced, extending the service life of key components and enabling the testing device to maintain stable clamping force measurement accuracy even in continuous production line operation environments.

[0057] The triggering timing of the buffer 600 can be precisely controlled by adjusting its installation position or by setting a contact sensor. The installation position of the buffer 600 can be set at the end of the movement path of the second support 300. Contact is triggered when the second support 300 is driven to reach a preset displacement. The buffer 600 can be a hydraulic buffer 600, a spring buffer 600, or a pneumatic buffer 600; this application does not limit the specific type.

[0058] In some embodiments, the ear hook clamping force testing device further includes a limiting member 700, which is a mechanical blocking component rigidly connected to the mounting platform 100. The installation position of the limiting member 700 is adjusted according to a preset deformation amount of the ear hook 900. The function of the limiting member 700 is to forcibly terminate the movement of the second support member 300 through physical contact, preventing excessive stretching of the ear hook 900 due to the stroke error of the drive member 400. The limiting member 700 is configured to stop the second support member 300 from moving away from the first support member 200 when the drive member 400 drives the second support member 300 to move in a direction away from the first support member 200, thereby limiting the distance between the second support member 300 and the first support member 200.

[0059] When the driving component 400 pushes the second support component 300 away from the first support component 200, both ends of the ear hook 900 are stretched to a set deformation amount. At this time, the second support component 300 makes rigid contact with the limiting component 700 and stops moving. The fixed position of the limiting component 700 determines the maximum stretch of the ear hook 900. By adjusting the installation position of the limiting component 700, the test deformation of ear hooks 900 of different specifications can be precisely controlled. The thrust of the driving component 400 is transmitted to the ear hook 900 through the second support component 300. The clamping force of the ear hook 900 is measured in real time by the tension sensor 500, while the mechanical stop function of the limiting component 700 eliminates the influence of the drive mechanism's stroke error on the test results.

[0060] This implementation uses the rigid stop of the limiting component 700 to create a hard constraint on displacement, eliminating the test data deviation caused by excessive displacement of the support component in the clamping force test of the ear hook 900. This ensures that the deformation of the ear hook 900 is strictly consistent in each test, achieving standardization of test conditions. Furthermore, the rigid stop function of the limiting component 700 avoids interference from drive mechanism errors and control precision errors in the testing process. The deformation of the ear hook 900 is determined only by the installation position of the limiting component 700, thus enabling the testing device to adapt to the rapid batch testing needs of production lines, ensuring test accuracy without repeated calibration of the drive stroke.

[0061] In some embodiments, the limiting member 700 includes a mounting portion 712 and a stop portion 711. The mounting portion 712 refers to a support structure that is fixedly connected to the mounting platform 100. Specifically, it can be implemented as a metal base with threaded holes or a plastic base with snap-fit. The function of the mounting portion 712 is to provide a stable mounting base for the stop portion 711. The stop portion 711 refers to a limiting module that moves linearly along the mounting portion 712. The stop portion 711 is movably connected to the mounting portion 712 in a first direction. Specifically, it can be implemented as a slider with threaded rods or an adjusting rod with scale markings. The stop portion 711 can move in the first direction to adjust the travel of the second support member 300.

[0062] The mounting part 712 is fixed to a preset position on the mounting platform 100 by bolts or welding, forming a rigid support structure. The stop part 711 is movably connected to the mounting part 712 by a threaded pair or a slide rail pair. The operator can rotate the adjustment knob or push the slider to displace the stop part 711 along an axis parallel to the moving direction of the second support member 300. When the driving member 400 pushes the second support member 300 away from the first support member 200, the end of the movement path of the movable seat 310 is blocked by the stop part 711. At this time, the position of the stop part 711 directly determines the maximum travel of the second support member 300. By changing the position of the stop part 711 on the mounting part 712, the deformation of the ear hook 900 under tension can be adjusted accordingly, thereby adapting to the clamping force testing requirements of ear hooks 900 of different sizes. In this embodiment, by setting a movable stop part 711, the limiting position is continuously adjustable, and the test parameter range of various specifications of ear hooks 900 can be covered without replacing the limiting components.

[0063] It should be noted that the stop block can be locked with the mounting part 712 after the position adjustment is completed.

[0064] In some embodiments, the limiting member 700 is a micrometer 721, which is connected to the mounting platform 100 via a mounting base 722. The micrometer 721 refers to a mechanical measuring tool with a precision threaded drive structure, specifically a mechanical micrometer 721 with a graduated ring and a micrometer screw, the thread lead of which is configured to convert rotational motion into linear displacement. The mounting base 722 refers to a rigid connection structure for fixing the micrometer 721, specifically a metal base with positioning holes and fastening bolts.

[0065] Specifically, the axis of the micrometer screw of the micrometer 721 is parallel to the direction of movement of the second support 300. When the scale ring of the micrometer 721 is rotated, the end of the micrometer screw generates a linear displacement to form a limiting surface. The mounting base 722 is fixed to the side of the guide rail of the mounting platform 100 by bolts, and the sleeve portion of the micrometer 721 is embedded in the positioning hole of the mounting base 722 and fixed by a lock nut. During adjustment, the contact area between the end face of the micrometer screw and the second support 300 is controlled within the stroke range of the thread lead, so that each rotation of one scale ring unit corresponds to a fixed amount of displacement change in the second support 300.

[0066] Compared to existing technologies, the traditional limiter 700 uses a manual adjustment bolt with a scale for stroke control, and its adjustment accuracy is affected by thread backlash and visual reading errors. In contrast, the micrometer 721 has a micrometer drum reading accuracy of 0.01 mm, and its internal backlash elimination mechanism can eliminate backlash errors in the threaded pair, fully meeting the 0.1 mm measurement requirements for the clamping force test of the ear hook 900.

[0067] This application solves the problem of test data fluctuation caused by insufficient adjustment accuracy of traditional limit devices by precisely controlling the deformation of the ear loop 900, ensuring that the clamping force test results meet the micro-Newton level measurement requirements and meet the test consistency requirements during batch testing on the production line.

[0068] The ear hook clamping force testing device can simultaneously have a buffer 600 and a limiting member 700. When the driving member 400 drives the second support member 300 away from the first support member 200, the second support member 300 first contacts the buffer 600. The buffer 600 reduces the moving speed through damping, eliminating the inertial impact caused by the rapid movement of the driving member 400. Subsequently, the second support member 300 continues to move until it contacts the limiting member 700. The limiting member 700 precisely limits the final displacement through a rigid stop. The separate design of the buffering stage and the limiting stage divides the deformation process of the ear hook 900 into two stages: deceleration and precise positioning. This avoids the limiting member 700 from being offset or damaged due to direct impact, as well as sensor measurement errors. Furthermore, the limiting member 700 ensures that the displacement amount is consistent in each test.

[0069] The buffer 600 and the limiting member 700 are located on both sides of the connection point between the driving member 400 and the first support member 200, so that their directions of action are spatially complementary to the direction of driving force.

[0070] Through the above technical solution, this application achieves a smooth decay of the moving speed of the second support 300 and precise control of the displacement during the clamping force test of the ear hook 900, effectively eliminating the influence of mechanical impact on the measurement accuracy of the tension sensor 500, ensuring the stability and repeatability of the test data, and meeting the requirements of test efficiency and consistency during batch testing on the production line.

[0071] In addition, such as Figure 3 As shown, the ear hook clamping force testing device also includes a protective cover 800, which is connected to the mounting platform 100 and covers the first support member 200, the second support member 300, the drive member 400 and the tension sensor 500. The front side of the protective cover 800 has an operation port 810.

[0072] The protective cover 800 refers to the shell structure covering the core components of the testing device. Specifically, it can be achieved by combining a metal frame with a transparent acrylic panel, and is fixedly connected to the mounting platform 100 with bolts to form a closed protective space. This structure can block external dust or mechanical interference while facilitating observation of the internal testing process. The operating port 810 refers to the rectangular opening area on the front side of the protective cover 800. The operating port 810 allows operators to directly contact the test components through the front area while maintaining a closed state in other directions.

[0073] The longitudinal dimension of the front operating port 810 is configured to allow for the vertical placement and removal of the test ear hooks 900, while the lateral dimension is configured to accommodate clamping operations of ear hooks 900 of different specifications. During batch testing, operators can continuously position and install the ear hooks 900 through the front operating port 810. After the drive unit 400 automatically performs the clamping force test, the tested ear hooks 900 can be quickly removed through the operating port 810. The enclosed structure of the protective cover 800 maintains stable environmental conditions during testing, preventing airflow disturbances or foreign object intrusion on the production line from affecting the measurement accuracy of the tension sensor 500.

[0074] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An ear-hanging clamping force testing device, characterized by, include: Installation platform (100); A first support member (200) and a second support member (300), wherein the first support member (200) is fixedly connected to the mounting platform (100), and the second support member (300) is slidably connected to the mounting platform (100). The first support member (200) and the second support member (300) are disposed between the two ends of the ear hook (900), and the opposite sides of the first support member (200) and the second support member (300) are used to slide in contact with the corresponding ends. A driving member (400) is provided, one end of which is connected to the mounting platform (100), and the other end of which is connected to the second support member (300). The driving member (400) is used to drive the second support member (300) to move in a direction away from or close to the first support member (200) so that the ear hook (900) is deformed or restored. A tension sensor (500) is disposed at an internal connection node of the first support member (200) or the second support member (300).

2. The ear-hanging clamp force testing device of claim 1, wherein, The first support member (200) includes a fixed base (210) and a first support plate (220). The fixed base (210) is connected to the mounting platform (100), and the first support plate (220) is connected to the fixed base (210) through the tension sensor (500).

3. The ear hook clamping force testing device according to claim 2, characterized in that, The first support plate (220) has reinforcing flanges (221) on its two opposite sides in the horizontal direction; Alternatively, the first support plate (220) includes a first plate and a second plate disposed opposite to each other along a first direction. The side of the first plate opposite to the second plate is used for sliding contact with the end of the ear loop (900). The side of the second plate away from the first plate is connected to the tension sensor (500). The projection area of ​​the tension sensor (500) on the first plate along the horizontal direction completely covers the sliding contact range between the end of the ear loop (900) and the first plate. The first direction is parallel to the movement direction of the second support member (300).

4. The ear hook clamping force testing device according to claim 1, characterized in that, The second support member (300) includes a movable seat (310) and a second support plate (320). The movable seat (310) is slidably connected to the mounting platform (100). The second support plate (320) and the drive member (400) are both connected to the movable seat (310).

5. The ear hook clamping force testing device according to claim 1, characterized in that, The ear hook clamping force testing device further includes a buffer (600), which is configured to contact the second support (300) to reduce the moving speed of the second support (300) when the drive member (400) drives the second support (300) to move in a direction away from the first support (200).

6. The ear hook clamping force testing device according to claim 1, characterized in that, The ear hook clamping force testing device further includes a limiting member (700), which is connected to the mounting platform (100). The limiting member (700) is configured to stop the second support member (300) from moving away from the first support member (200) when the driving member (400) drives the second support member (300) to move in a direction away from the first support member (200).

7. The ear hook clamping force testing device according to claim 6, characterized in that, The limiting member (700) includes a mounting part (712) and a stop part (711). The mounting part (712) is connected to the mounting platform (100). The stop part (711) is movably connected to the mounting part (712) along a first direction. The stop part (711) can move along the first direction to adjust the travel of the second support member (300). The first direction is parallel to the movement direction of the second support member (300).

8. The ear hook clamping force testing device according to claim 6, characterized in that, The limiting component (700) is a micrometer (721), which is connected to the mounting platform (100) via a mounting base (722).

9. The ear hook clamping force testing device according to claim 6, characterized in that, The ear hook clamping force testing device also includes a buffer (600); The driving member (400) drives the second support member (300) to move in a direction away from the first support member (200) to contact the buffer (600) and the limiting member (700) in sequence; and / or, The buffer (600) and the limiting member (700) are located on both sides of the connection point between the driving member (400) and the first support member (200).

10. The ear hook clamping force testing device according to claim 1, characterized in that, The ear hook clamp holding force testing device also includes a protective cover (800), which is connected to the mounting platform (100) and covers the first support member (200), the second support member (300), the drive member (400) and the tension sensor (500). The front side of the protective cover (800) has an operation port (810).

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