31results about How to "Improve electrical connection stability" patented technology

The utility model discloses a capacitor protection assembly and a capacitor, and relates to the technical field of capacitors, and the capacitor protection assembly comprises a housing, a cover body, a support, and a conductive assembly. The shell is provided with a containing cavity for containing the capacitor assembly. The cover body is arranged at the opening of the containing cavity in a covering mode. The support is installed on the cover body, and at least part of the support is located in the containing cavity. The conductive assembly comprises a first conductive part and a second conductive part which are connected, the first conductive part is directly or indirectly connected with the cover body, and the second conductive part is installed on the support. The support is provided with an electric fence, the electric fence is arranged on the peripheral side of the second conductive part, when the capacitor assembly breaks down, the cover body expands in the direction away from the support, and the first conductive part and the second conductive part are disconnected. According to the capacitor protection assembly, the capacitor protection capability can be improved, and the fault probability of the capacitor is reduced.

The utility model relates to an intelligent lighting control panel which comprises a display panel and a shell, a mounting groove is formed in the display panel, a plug penetrating through the display panel is inserted into the mounting groove, a socket is further inserted into one end of the plug, the socket is arranged in a mounting wall, and the shell is arranged in the mounting wall. A pull rod penetrating and extending to one end of the plug is slidably mounted in the plug. According to the intelligent lighting control panel, the plug is arranged on the display panel to be electrically connected with the operation control panel in the display panel, so that the control panel can be electrically connected through plugging of the plug, a connector is extended at the end of the plug, and an extrusion block is arranged to extrude the connector, so that the display panel can be electrically connected after the plug and the socket are plugged; the connector can be adjusted to open and abut against the socket for pre-fixation, the electrical connection stability is improved, meanwhile, the connection structure can be further hidden in the shell through the containing groove and the pull handle, and the installation attractiveness of the device is improved.

The invention relates to a rotating shaft assembly, a grounding part and electronic equipment, the rotating shaft assembly comprises a rotating shaft and the grounding part, the grounding part is arranged between the rotating shaft and a rotating shaft back cover in the electronic equipment and is electrically connected with the rotating shaft back cover and the rotating shaft to form a grounding circuit, and the grounding part comprises a voltage limiting element. When the voltage in the grounding circuit is greater than or equal to a first threshold value of the voltage limiting element, the voltage limiting element conducts the grounding circuit; when the voltage in the grounding circuit is smaller than the first threshold value of the voltage limiting element, the voltage limiting element disconnects the grounding circuit. The rotating shaft assembly is simple in structure, easy to manufacture and low in cost, the ESD grounding requirement of the rotating shaft back cover and the daily use requirement of a user can be met at the same time, the service life of a metal appearance part outside the electronic equipment is prolonged, and the use safety of the electronic equipment is improved.

Embodiments of the present application relate to the technical field of batteries, and in particular, to a battery, a power consumption device, a preparation method for the battery, and a manufacturing mold. The battery comprises a frame body, a plurality of battery cells and a binder, the frame body is provided with an accommodating cavity, and the accommodating cavity is provided with an opening in a first direction; the plurality of battery cells are disposed in the accommodating cavity, and the electrode terminals of the battery cells face the opening; the binder is disposed in the accommodating cavity, and the binder is connected to the plurality of battery cells and the frame body. According to the battery provided by the present application, the relative displacement between the battery cells can be prevented or reduced, and the electrical connection stability of the battery is improved.

The utility model discloses an anti-pine needle female seat which comprises a female seat shell, a female needle body is installed on the inner side of the female seat shell, the female needle body is made of high-strength metal materials, the female needle body comprises a female needle inserting end, a female needle connecting end and a fixing rod, and an inserting groove is formed in the top end of the female seat shell. The female needle inserting end is located on the inner side of the inserting groove and used for being matched with a male seat pin, and a hexagonal limiting block is arranged on the surface of the end, close to the female needle inserting end, of the female needle body; through the matching arrangement of the convex ring and the elastic clamping block, the radial limiting of the female pin main body is realized, the loosening of the female pin in the radial direction is effectively prevented, the electrical connection stability of the connector is improved, and through the arrangement of the anti-loosening rubber layer between the female seat shell and the female pin main body, the bonding force between the female pin and the female seat shell is enhanced, and the electrical connection stability of the connector is improved. The female pin is prevented from loosening in the axial direction, and the anti-loosening effect is further improved.

The microswitch is characterized in that a housing is provided with an accommodating cavity, and a first conducting strip, a second conducting strip and a third conducting strip are accommodated in the accommodating cavity; the driving piece is contained in the containing cavity and comprises a pressing part and a fixing part, the pressing part is connected with the fixing part, the pressing part penetrates through the shell and extends to the outside, and the fixing part is provided with a fixing cavity; the reset piece is contained in the containing cavity, abuts against the driving piece and gives reset force to the driving piece; the reed assembly is contained in the fixing cavity, one end of the reed assembly is electrically connected with the first conducting strip, a first clamping groove is formed in the other end of the reed assembly, the second conducting strip and the third conducting strip are both located on the motion trail of the first clamping groove, and the reed assembly is detachably connected with the driving part; the reed assembly is installed in the fixing cavity, the linkage effect between the reed assembly and the driving piece is achieved, the reed assembly and the driving piece are detachably connected, assembling is more convenient and simpler, and therefore the assembling efficiency is improved.

The invention belongs to the technical field of cable installation, and particularly relates to a cable connector which comprises an outer pipe, paired cylinder caps, a holding piece, a tightening cylinder, a spiral ring, a spring and an inner pipe. The cylinder caps are fixed at two ends of the outer tube. The holding piece comprises a ring body, a plurality of pressing arms and rubber pads arranged on the pressing arms. The outer side faces of the pressing arms are wedge-shaped curved surfaces, and the multiple wedge-shaped curved surfaces can be distributed on the same conical surface. And the tightening cylinder is sleeved on the holding piece, and an inner conical surface is formed at the end part of a cylinder cavity of the tightening cylinder. The spiral ring is matched with the ring body and can push the tightening cylinder to move, so that the inner conical surface pushes and presses the pressing arm to be folded in the direction close to the axis of the holding piece. The spring is arranged on the free end side of the ring body and can exert elastic thrust on the enclasping piece. The inner pipe is arranged between the holding pieces, and the two ends of the inner pipe are fixedly connected with the pressing arms on the two holding pieces respectively. And the electric connector is arranged in the tube cavity of the inner tube. According to the invention, the stress condition of the electric connector can be improved, and the connection stability and reliability of the cable at the electric connector can be improved.

The utility model discloses an electric connector, which belongs to the field of electric connectors and comprises a metal shell, a first plastic main body and a first conductive terminal group, the metal shell is arranged on the periphery of the first plastic main body, part of the first plastic main body is exposed out of the metal shell, and the first conductive terminal group is arranged in the first plastic main body. According to the electric connector provided by the utility model, through the arrangement of the metal shell, the strength of the electric connector is improved, and the first plastic main body is prevented from cracking when the electric connector is subjected to external force, vibration, impact and screw locking. And the first plastic main body is exposed, so that crosstalk can be effectively improved, especially far-end crosstalk can be improved, and signal performance can be improved. Therefore, through combination of strength improvement and crosstalk improvement, the quality of the electric connector is greatly improved, and the quality and performance of electric connection are improved.

The utility model discloses an electric connection device, including first sleeve, be equipped with first electrically conductive contact piece in first sleeve, and first electrically conductive contact piece is connected with cable electricity, second sleeve, be equipped with second electrically conductive contact piece in second sleeve, and second electrically conductive contact piece is connected with cable electricity, when first sleeve and second sleeve assembly fixed, first electrically conductive contact piece and second electrically conductive contact piece contact and conduct. The present application can solve the problem of christmas tree wiring disorderly.

This invention discloses an electrostimulation rehabilitation therapy device, including a fixed base with fixing straps on both sides. The fixed base has a mounting ring on each side, and an electrostimulation device is mounted on the mounting ring. The electrostimulation device includes a mounting frame with a housing mounted on it. The housing has a receiving cavity with a slide rail inside. A needle holder is mounted on the slide rail, and the needle holder is driven to move by a driving mechanism. A needle body is mounted on the needle holder. An opening is formed on the bottom surface of the housing, and a guide head is installed at the opening. The guide head has a needle guide hole for the needle body to enter and exit. An electroacupuncture clamp assembly is located inside the housing. This invention first fixes the fixed base to the acupoint, then installs the electrostimulation device. Automatic needle insertion is achieved through the driving mechanism, and the electroacupuncture clamp assembly on both sides is driven by an electromagnet to clamp the needle body. The electroacupuncture device delivers an electrostimulation signal, improving needle insertion accuracy and electrical connection stability.

This utility model discloses a miniaturized ceramic dielectric chip, belonging to the field of capacitor technology, to solve the problem that when the edge of a disc ceramic capacitor contacts the circuit board, stress concentration easily leads to edge breakage, which not only reduces the product yield but may also affect the reliability and service life of the entire circuit system. This utility model uses Y5U ceramic material with a dielectric constant of 8500-9200 as the ceramic dielectric substrate. Its shape is a cube with dimensions of 7×5×1.2mm. The four corners of both the front and back sides are chamfered, and the ends of the vertical edges on all four sides are rounded at the chamfer connections, with an arc length of 0.4mm-0.5mm. Within this arc range, the stress concentration problem during mounting is effectively alleviated, the structural stability of the chip is ensured, and the electric field distribution is optimized.

The invention discloses a thin film structure for inhibiting warping in a Micro-LED bonding process and a preparation method thereof, and relates to the technical field of display packaging. The thin film structure is characterized in that in the bonding process of a chip and a substrate, a target material thin film is deposited on the back surfaces of a sapphire substrate and a Si substrate; the thermal expansion coefficient of the target material film is between that of sapphire and that of Si. According to the method, warping caused by mismatching of thermal expansion coefficients of sapphire and Si in the flip-chip bonding process can be relieved.

This application relates to the field of battery technology and discloses a cover plate assembly and a battery. The cover plate assembly includes: a cover plate body with terminal mounting holes and a flange structure; a terminal, whose projection on the extending plane of the cover plate body is a unicornuate shape; the flange structure includes an extension portion and a pressing portion; the pressing portion includes a long side section suitable for pressing a straight portion and an arc side section suitable for pressing an arc portion; the width of the pressing portion extending from the extension portion on the long side section is S (in mm); the width of the pressing portion extending from the extension portion on the arc side section is T (in mm), and S > T. The cover plate assembly provided by this application enables the long side section to apply a greater pressing force to the straight portion of the unicornuate terminal after riveting, thereby improving the pressing tightness and connection reliability of the terminal edge, avoiding local deformation of the long side section due to its long length, and improving the deformation resistance of the long side section.

The invention belongs to the technical field of sewage treatment equipment, and particularly relates to domestic sewage treatment and filtration equipment, which comprises a sewage treatment room, a sewage treatment tank and a filter, the filter plate is arranged in the sewage treatment tank; the sewage input pipe is arranged on one side of the sewage treatment tank and is communicated with the interior of the sewage treatment tank; the drainage pipe is arranged at the bottom of the side wall of the sewage treatment tank; the ventilating and deodorizing mechanism is arranged on the side wall of the sewage treatment room and comprises an air outlet pipe, a fan and a deodorizing pipe; the agent adding mechanism is arranged on the sewage input pipe, and the agent adding mechanism comprises an agent box used for storing and conveying agents; wherein the air outlet pipe is communicated with the interior of the sewage treatment room, the fan is connected with the air outlet pipe in series, and the odor removal pipe is arranged at the air outlet end of the fan. Compared with the prior art, the sewage treatment room has the advantages that the working efficiency can be effectively improved, and the odor in the sewage treatment room is reduced.

The portable outdoor mobile power supply structure comprises a battery accommodating and expanding assembly and a battery assembly. The battery accommodating and expanding assembly comprises a battery accommodating and expanding box and a protective cover plate. The battery accommodating and expanding box is formed with a battery mounting groove. The protective cover plate is arranged at the groove opening of the battery mounting groove to jointly form a battery mounting cavity. The protective cover plate is detachably connected with the battery accommodating and expanding box. The battery mounting cavity is used for accommodating the limiting battery assembly. The power connection end of the battery assembly is used for electrically connecting with the power connection end of the battery accommodating and expanding box. The portable outdoor mobile power supply structure has good use stability.

This utility model discloses a conductive electrode, a dimming film, and a dimming glass. The conductive electrode includes: a flexible circuit board comprising a first cover layer, a second cover layer, and an intermediate conductive layer sandwiched between the first and second cover layers. The intermediate conductive layer has a conductive input section, a circuit section, and a conductive output section. A conductive bonding structure is also included, wherein the conductive output section is bonded and fixed to the electrode mounting area via the conductive bonding structure. The upper surface of the conductive output section is electrically connected to the electrode mounting area via the conductive bonding structure, and the lower surface of the conductive output section is also electrically connected to the electrode mounting area via the conductive bonding structure, or the lower surface of the conductive output section is bonded and electrically connected to the electrode mounting area. In this utility model, any surface of the conductive output section is conductive. The conductive bonding structure electrically connects the upper surface of the conductive output section to the electrode mounting area, effectively improving the peel resistance of the conductive output section and the conductive electrode, and the stability of the electrical connection between the conductive electrode and the electrode mounting area.

The present invention relates to a bearing module, a tray, and a test handler wherein the bearing module comprises: a bearing main body having a receiving groove for receiving an electronic component; the bottom plate part is combined with the bearing main body, and the bottom plate part comprises a bottom plate component used for supporting the bottom surface of the electronic component accommodated in the accommodating groove; and a plurality of electrical connection holes penetrating through the bottom plate part, and the bottom plate part is made of glass.

The utility model discloses a self-connection type photovoltaic junction box and a photovoltaic module, the self-connection type photovoltaic junction box comprises a base, the two sides of the base in the length direction are provided with clamping parts extending upwards, and the base is provided with a bus bar lead-out port; the box cover is provided with a containing cavity with a downward opening; the diode module is arranged in the accommodating cavity, the diode module is provided with a metal plug bush and a wiring terminal, the wiring terminal is used for being connected with a corresponding cable, and one end of the accommodating cavity is provided with a channel for the cable to pass through; the metal connecting piece is arranged on the base, and the metal connecting piece is provided with a connecting groove used for being electrically connected with the bus bar and a metal contact pin used for being corresponding to the metal plug bush; wherein the two clamping parts are used for being connected with the two outer sides of the box cover in the length direction in a buckled mode, and meanwhile the metal inserting pins are inserted into the metal inserting sleeves for electric connection. The photovoltaic connector is simple, convenient and fast to disassemble, can realize self-connection, and can realize stable electric connection without depending on a traditional photovoltaic connector.

The invention discloses a vehicle battery pack connecting device, and belongs to the technical field of battery pack charging for battery swapping, the vehicle battery pack connecting device comprises a base, an electric connector and a trigger piece, when a battery pack is placed on the trigger piece, the trigger piece can be displaced under the pressure effect of the battery pack, and the electric connector is connected with the base; the electric connector is driven by the trigger piece to move downwards and move in the horizontal direction at the same time so that the electric connector can get close to the battery pack and be electrically connected with the battery pack. In the process that the battery pack is placed on the triggering piece till the battery pack is electrically connected with the electric connector, the placing stability of the battery pack on the triggering piece is high, and meanwhile due to the fact that the movement track of the electric connector is constant, the battery pack can be stably placed on the triggering piece. The electric connector certainly moves along the fixed movement track until the electric connector is electrically connected with the battery pack, the phenomenon of connection dislocation caused by movement deviation of the battery pack does not exist in the electric connection process of the battery pack, and the electric connection efficiency and the electric connection stability of the battery pack connecting device are improved.

One end of one of a front pool electrode and a rear pool electrode of the kit passes through a microporous sheet and extends to one side where the other electrode is located, and the other end of the front pool electrode and the rear pool electrode and the other end of the other electrode are exposed out of the same side face of a shell. The kit can be in butt joint with the forebay electrode and the afterbay electrode in one direction when being electrically connected with the hematology analyzer, the alignment process of the kit and the hematology analyzer is simple, the alignment accuracy of the hematology analyzer and the kit is improved, the electrical connection stability of the kit and the hematology analyzer is improved, and the detection accuracy of the hematology analyzer is improved. The possibility of faults such as failure in detection caused by inaccurate butt joint of the kit and the hematology analyzer is reduced, and the use experience of a user is improved.

The invention discloses a Panama power supply module and a battery cupboard, the Panama power supply module comprises a battery body, the battery body comprises a shell and an electric energy unit, and one end of the shell is provided with a power connection assembly; the control assembly can cut off / connect the electric connection between the power connection assembly and the electric energy unit, and at the beginning, the control assembly keeps the electric connection between the power connection assembly and the electric energy unit disconnected; and the energy storage assembly is arranged on the shell and provides trend force for controlling the assembly to communicate with the power connection assembly and the electric energy unit. In the plugging process of the battery body and the battery cabinet, the control assembly plays a key protection role. In the initial stage of plugging, the electrical connection between the power connection assembly and the electric energy unit is actively cut off, so that the resistance instability of a plugging port caused by plugging vibration is effectively avoided; after plugging is completed and a stable installation state is achieved, the energy storage assembly and the linkage assembly are used for precisely driving the control assembly to connect the circuit, smooth transmission of electric energy is ensured, stable electrification is achieved, and the electrical connection stability in the plugging process is greatly improved.

The utility model discloses an equipotential internal thread joint, belongs to the technical field of pipeline joints, and is used for solving the problems that the connection mode of the equipotential internal thread joint is easy to cause the damage and falling of a lead, the failure of safety protection and the increase of rework cost. The equipotential internal thread connector comprises a water pipe connector, a conductive connector, a wire and a locking piece. The water pipe connector is provided with a pipeline and a connector communicated with the pipeline. The conductive connector is fixedly installed on the inner side of the interface and provided with a connecting port, and a wire hole extending in the direction away from the connecting port and a locking hole extending to the side face of the conductive connector from the wire hole are formed in the conductive connector. The wire is electrically connected with the conductive joint and penetrates through the wire hole; the locking piece is connected to the inner side of the locking hole and tightly abuts against the wire to the inner side of the wire hole.

The utility model discloses a portable battery structure for a sound box, and relates to the technical field of sound box accessories. The device comprises a battery body, wherein the outer surface of the battery body is matched with a battery slot formed in the sound box; the bottom end of the battery body is fixedly provided with a power connection socket used for being electrically connected with a loudspeaker box, and the other end of the battery body is fixedly connected with a drawstring, so that the battery body can be conveniently pulled out of a loudspeaker box battery slot through the drawstring. According to the device, a traditional vibrating needle type electrode is replaced by a plug-in type electrode structure of the power connection plug and the power connection socket, so that the stability of electric connection between the battery and the sound box is improved. Compared with an elastic needle type electrode, the plug-in type electrode is more compact in structure, can better resist external vibration and impact, and meets the requirements of users.

The utility model relates to the technical field of inductor, and disclose a kind of vibration control steady current inductor, including installation box and magnetic core, the magnetic core is located inside the installation box, the magnetic core is vertically arranged.This kind of vibration control steady current inductor, magnetic core is vertically arranged in installation box, the bidirectional clamping of cooperation clamping block and clamping strip and the plug-in locking of slide bar linkage buckle, both realize modularization quick assembly, and form double buffering by spring pre-tightening force and arc angle arc groove sliding fit, effectively inhibit vibration displacement and reduce mechanical wear;The embedded limit combination vertical magnetic core layout of clamping groove and clamping block, optimize magnetic field uniformity and reduce inductance fluctuation;The inlaying combination of elastic sheet and metal conductive strip realizes coil pin self-adapting compression contact, cooperation compression block bolt secondary locking, significantly improve the electrical connection stability under high-frequency vibration;Radiating hole and the natural convection design of magnetic core vertical structure form longitudinal air duct.

This invention discloses a miniaturized log-periodic antenna and its assembly and design methods, belonging to the field of communication antenna technology. The antenna includes a dielectric substrate, a semi-steel cable, an adapter plate, and a copper layer; the copper layer is disposed on the front and back sides of the dielectric substrate; an adapter plate is disposed at one end of the dielectric substrate; the outer shell of the semi-steel cable is welded to the copper layer at the center line of the back side of the dielectric substrate, and the inner core of the semi-steel cable is bent upwards through the side of the dielectric substrate without the adapter plate and then welded to the copper layer on the front side of the dielectric substrate; the antenna operates in the frequency band of 150MHz–400MHz, with a VSWR ≤2, and uses linear polarization. This invention addresses the performance shortcomings of traditional antennas in this frequency band by optimizing the structure of the vibrator and improving the feeding method, enabling it to cover the target frequency band while meeting the lightweight and miniaturized usage requirements of different scenarios.

The utility model discloses an LED device, which comprises a support, a bonding pad arranged on the support, a plurality of LED chips arranged on the bonding pad and a plurality of connecting bonding wires arranged among the plurality of LED chips, and the plurality of LED chips are connected in parallel on the bonding pad of the support based on the plurality of connecting bonding wires. The plurality of connecting bonding wires are divided into a first bonding wire group and a second bonding wire group, any LED chip is provided with a positive electrode end and a negative electrode end, the positive electrode ends of the plurality of LED chips are connected in series based on the first bonding wire group, and the negative electrode ends of the plurality of LED chips are connected in series based on the second bonding wire group. According to the LED device, the same-polarity electrodes of the LED chips are connected in series, the bonding wire bonding distance between the adjacent LED chips is shortened, the LED chips form a parallel connection structure, the situation that welding wire arcs interfere with one another is avoided, the electrical connection stability of the LED chips is improved, and therefore the working reliability of the LED device is improved.

The utility model discloses a bus duct convenient to radiate heat, its technical scheme main points are including two unit bus ducts and an interface main part, both ends of two unit bus ducts are provided with electrically conductive part and connecting piece, the interface main part includes the carrier and the cover that covers on the carrier top, is provided with the injection port on the cover, is provided with a plurality of with electrically conductive part intercalation setting insulating air bag in the carrier, the face of cover towards carrier inner chamber is provided with the air chamber that communicates with injection port, a plurality of side -by -side setting and with air chamber inner chamber intercommunication's gas duct is screwd on air chamber bottom surface, a plurality of gas ducts respectively penetrate a plurality of insulating air bags, a plurality of the peripheral wall of gas ducts all are provided with a plurality of the side hole of gas duct inner chamber and insulating air bag inner chamber intercommunication, and the carrier is provided with the heat dissipation hole that a plurality of gas ducts one -one penetrates, and the end of a plurality of gas ducts is closed type and shows out heat dissipation hole, solved the problem that the prior art exists and has the potential safety hazard of poor heat dissipation.

The invention is applicable to the field of current collection circuits, and provides 35KV current collection circuit wiring equipment, which comprises a cable and a T-shaped wire clamp, the cable comprises a main core wire and a branch core wire, the branch core wire is vertically mounted below the main core wire, and the T-shaped wire clamp comprises a top cover, two bottom plates, two clamping plates, a plurality of U-shaped bolts and a plurality of nuts. The two clamping plates are oppositely installed on the outer side of the branch core wire, a first base plate and a second base plate are arranged on the outer sides of the two clamping plates respectively, and a plurality of springs are installed on the side faces of the first base plate and the second base plate. The first base plate and the second base plate are matched based on the movably-arranged clamping plates, and the first base plate and the second base plate are extruded through U-shaped bolts and nuts; according to the utility model, the clamping plate is arranged, the branch core wire is fixed by extruding the clamping plate through the arranged spring, the arranged spring can play a role in buffering and looseness prevention, the branch core wire which is vertically installed is prevented from falling off, meanwhile, the branch core wire can be prevented from being installed too tightly, the branch core wire or the T-shaped wire clamp is prevented from being damaged, and the influence on the conductive performance is reduced.

The utility model discloses a kind of multi-face wiring battery pole and motorcycle battery, the pole includes inner electrode end and outer electrode end, the inner electrode end is electrically connected with the positive pole or negative pole of battery assembly or through control circuit board and the positive pole or negative pole of battery assembly is electrically connected, the outer electrode end is hexahedron structure, multiple surfaces in the hexahedron respectively set electrode connecting structure, and through the electrode connecting structure of one of them and outer conductor wire electrically connected.The utility model of motorcycle battery, using multi-pole design, direct power supply wiring of different function modules of motorcycle is facilitated, in addition, the outer electrode end of pole uses multi-face wiring structure, outer conductor wire can be according to the circumferential space condition of the position of motorcycle battery placement position selects the orientation of adaptation and is connected, and the space position is optimized and wiring is convenient.

A test adapter and a test device, the test adapter comprises a mounting seat, an adapter seat and a support seat, the mounting seat and the adapter seat are arranged on the support seat; the mounting seat is provided with an earphone fixing position, the earphone fixing position is used for fixing an earphone to be tested; the adapter seat is provided with an electrically connected clamping piece and a first adapter piece, the clamping piece has two clamping surfaces arranged face to face, at least one of the two clamping surfaces is a non-smooth anti-skid surface; the support seat is provided with a second adapter piece, the first adapter piece and the second adapter piece are in contact to form an electrical connection, and the second adapter piece is used for electrical connection with a test host. Since the clamping piece on the adapter seat has a non-smooth anti-skid surface, the clamping piece can clamp the cable of the earphone to be tested through the anti-skid surface during the test, the stability of the cable fixation and electrical connection of the earphone to be tested is improved, and the problem of unstable electrical connection of the cable of the test earphone caused by unstable clamping after long-term use of the clamping piece can be avoided.