204results about "Resistor mounting/supporting" patented technology

The invention discloses a thermistor mounting method and related equipment. The thermistor mounting method comprises the following steps: applying micro-power alternating bias excitation to a thermistor to obtain cold-state thermal resistance reference data; mounting a thermistor on the surface of the solder paste, collecting real-time resistance data in a temperature rise process, and performing normalized difference according to cold-state thermal resistance reference data to obtain a normalized dynamic resistance curve; performing derivative continuity and extreme value distribution analysis on the curve to obtain a wetting connectivity index; when the wetting connectivity index reaches a preset threshold value, executing second-order extreme value spacing analysis to obtain interface heat flux density distribution, calculating an interface thermal resistance dispersion vector field, and adjusting the transmission chain speed and furnace chamber airflow parameters according to the interface thermal resistance dispersion vector field; and a backtracking dynamic resistance curve is obtained in the cooling process, and the backtracking dynamic resistance curve and the standardized dynamic resistance curve are differentiated to obtain a curing quality factor. According to the invention, real-time identification in a defect germination stage and instant correction in a solder solidification window stage in a thermistor mounting process can be realized, and the mounting quality and reliability are improved.

The utility model provides a lightning impulse protection device for a transformer, and relates to the technical field of lightning arresters, the lightning impulse protection device for the transformer comprises a mounting plate, two ends of the mounting plate are respectively provided with a protection mechanism, the protection mechanism comprises two rectangular blocks, the inner walls of the two rectangular blocks are rotatably connected with a rotating shaft, and the rotating shaft is connected with the mounting plate. A rotating shaft is arranged on the outer side of the screw rod, a coil spring is arranged on one side of the rotating shaft, an L-shaped rod is fixedly connected to the outer surface of the rotating shaft, and a piston block is rotationally connected to one end of the screw rod. The piston block slides on the inner wall of the rectangular groove by rotating the screw rod, so that the airbag sheet deforms and expands outwards, the outer side of the joint of the lightning arrester body and the high-voltage line is wrapped and protected, the influence of rain and sun on the outer side of the joint of the high-voltage line and the lightning arrester body is reduced as much as possible, the service life of the lightning arrester body is prolonged, and the use effect of the lightning arrester body is improved.

A system includes an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module, the power module including a thermistor assembly, the thermistor assembly including: a conductive layer including a trench; a thermistor connected to the conductive layer and disposed across the trench; and a first height control feature between the conductive layer and the thermistor.

The invention discloses a resistor carrier, a resistor pin bending system and a resistor pin bending method. The resistor carrier comprises a support body which is strip-shaped and has two opposite sides in the width direction of the support body; and the retaining structure is positioned on the top surface of the support body and is used for retaining the resistor body of the resistor. When the resistor body of the resistor is held in the holding structure, a pair of pins of the resistor are suspended above the top surface of the supporting body and extend out of the two sides of the supporting body respectively, so that the pins of the resistor are allowed to be bent relative to the resistor body. According to the resistor pin bending system, automatic bending of the resistor pin can be achieved, the resistor pin bending efficiency is improved, automatic flow line production of electronic products can be achieved, and the production efficiency of the electronic products is greatly improved.

This invention discloses a high-vibration-resistant high-voltage surge arrester, specifically relating to the field of surge arrester technology. It includes a surge arrester body, a buffer assembly, and an adjustment assembly. Through the buffer assembly, this invention can release the blockage of the vent hole when the surge arrester body experiences severe, large-amplitude vibrations. It can adjust the buffer rigidity, allowing the first piston to continue moving downwards for buffering, thus improving the buffering effect. Furthermore, as the first piston moves to the bottom of the first chamber, it gradually blocks the connecting hole, acting as a throttling device, gradually reducing the oil output within the connecting hole. This further slows the descent speed of the first piston, thus providing multi-stage buffering. This prevents buffer failure and impacts under large-amplitude vibrations, further improving the buffering effect and extending the service life of the surge arrester.

The invention relates to the technical field of rail transit vehicle power supply protection, in particular to a vehicle-mounted lightning arrester which comprises a body, a base, a sealing cavity, a flow guide passage and a restraint mechanism, and when pressure in the sealing cavity reaches the opening condition of a pressure relief opening and under the action of directional jet flow formed by a jet opening, the body is separated from a limiting piece; and the rotating shaft rotates towards the off-position direction around the rotating supporting part. According to the application, destructive voltage breakdown is taken as an action power source, gas is generated and rapidly expanded due to electric arc during breakdown of the sealing cavity in the body, after the cavity pressure rises to a set threshold value, the pressure relief opening with the pressure opening characteristic is selectively opened, and expanded gas is directionally discharged from the spraying opening along the flow guide passage; the offset of the spraying port relative to the rotary supporting part converts the spraying momentum into a dumping moment to the body, so that the body is quickly and certainly switched to the off position from the working position under the condition of no additional operation, the electric connection interruption with the high-voltage conductor is formed, and the risk of secondary pressurization of the reclosing is reduced.

This utility model discloses a stable and reliable surface mount resistor, belonging to the field of surface mount resistor technology. It includes a surface mount resistor body, with an upper mounting plate and a lower mounting plate respectively positioned above and below the body. Two sets of support rods are fixedly connected to the upper surface of the lower mounting plate, with the top of each set of support rods contacting the bottom surface of the upper mounting plate. Each set of support rods has a snap-fit ​​groove at its top. Two sets of snap-fit ​​blocks are fixedly connected to the bottom surface of the upper mounting plate. This stable and reliable surface mount resistor, through the coordination of the surface mount resistor body, upper mounting plate, lower mounting plate, support rods, snap-fit ​​grooves, snap-fit ​​blocks, and limiting frame, conveniently and stably utilizes heat dissipation and heating structures to improve the working environment of the surface mount resistor body. Furthermore, by utilizing a heating element, a semiconductor cooling element, and a temperature sensor, it strives to ensure that the surface mount resistor is in a constant temperature environment, thus enabling stable and reliable use of the surface mount resistor.

The invention provides a valve group and a valve tower, and belongs to the field of semiconductor devices. The valve group comprises coolers arranged at intervals in the thickness direction, damping capacitors and damping resistors, the damping capacitors are arranged between every two adjacent coolers in a crossing mode, capacitor supports used for installing the damping capacitors are arranged on the side faces of the coolers, and the two ends of each damping capacitor are connected with the capacitor supports on the two coolers respectively. In the two capacitor supports at the two ends of the damping capacitor, one is a conductive support, the other is an insulating support, one end of the damping capacitor is communicated with the corresponding cooler through the conductive support, the other end of the damping capacitor is communicated with one end of the damping resistor through a wire or a conducting bar, and the other end of the damping resistor is communicated with the cooler where the insulating support is located. The valve tower comprises the valve group. The valve bank is integrally designed, so that the structure of the valve bank is more compact, and the area required for construction of a valve tower is reduced.

The utility model discloses a high-temperature-resistant winding resistor device which comprises a ceramic winding reel, two ends of the ceramic winding reel are fixedly connected with pin caps, the circumferential outer wall of the ceramic winding reel is connected with a resistance wire in a winding mode, a contact pin is arranged between the ceramic winding reel and the pin caps in a penetrating mode, the outer side of the resistance wire is sleeved with an insulating shell, and the outer side of the insulating shell is sleeved with an insulating sleeve. A plurality of heat dissipation fins are clamped on the outer wall of the circumference of the insulating shell, and a plurality of heat dissipation holes are formed in the circumference of the insulating shell. According to the utility model, heat generated by the resistance wire is efficiently transmitted to the insulating shell through the insulating heat-conducting glue, and then is dissipated into the air through the heat dissipation fins, so that the resistance wire is subjected to heat dissipation and cooling at a high speed, and meanwhile, the heat of the resistance wire is dissipated from the heat dissipation holes, so that the resistance wire is better subjected to heat dissipation and cooling, and the service life of the resistance wire is prolonged. Therefore, the resistance device is prevented from generating stress due to high-temperature expansion, the resistance wire is prevented from loosening and deforming, and the precision and stability of the resistor are prevented from being reduced.

An electronic device includes: a plurality of electronic components, each including a pair of terminals; a support member including a support surface that supports the plurality of electronic components; a wiring layer formed on the support surface; and a sealing resin covering each of the plurality of electronic components. The wiring layer includes a first wiring section to which one of the pair of terminals of each of the plurality of electronic components is bonded. Electrical characteristics of the plurality of electronic components are equivalently represented by a single circuit symbol in a circuit diagram.

The utility model discloses a locomotive brake resistor quick replacement device, which relates to the technical field of brake resistor replacement devices and comprises a mounting frame, mounting openings are formed in two sides of the mounting frame in a penetrating manner, fixing mechanisms are arranged in the mounting openings, and a wire placement groove is formed in the back surface of the mounting frame. The fixing mechanism comprises a mounting groove formed in the inner bottom wall of the mounting opening, clamping plates are arranged in the mounting groove, and symmetrical limiting clamping strips are arranged on the upper surfaces of the two clamping plates. According to the quick replacing device for the locomotive brake resistor, due to the arrangement of the fixing mechanism, the clamping plates on the two sides are pushed under the action of the spring to clamp and fix the brake resistor device in the mounting frame, so that the brake resistor device can be mounted and dismounted, and when the brake resistor device is dismounted, the push rod is pushed to drive the clamping plates to move in the mounting grooves; and the brake resistor can be taken out from the mounting frame, so that the replacement efficiency of the brake resistor is improved while the operation is simple.

The high-temperature-resistant and corrosion-resistant ceramic resistor comprises a ceramic resistor, the ceramic resistor is placed in a support, first placing grooves are formed in the centers of the two sides of the support, pins of the ceramic resistor are placed in the first placing grooves, through grooves are formed in the centers of the two ends of the support, and second heat dissipation assemblies are arranged in the through grooves. A plurality of clamping grooves are formed in the two ends of the bottom of the inner surface of the support, first heat dissipation pieces are connected to the clamping grooves in a clamped mode, second heat dissipation assemblies are arranged at the two ends of the support where the ceramic resistor is installed, and heat generated in the working process of the ceramic resistor is guided into sliding blocks through heat conduction plates through the second heat dissipation assemblies; and the heat is finally guided into the second cooling fins, and is guided out through the second cooling fins, so that the bracket is provided with a corresponding heat dissipation mechanism, the heat dissipation of the ceramic resistor is carried out, and the heat dissipation of the ceramic resistor is prevented from being influenced after the ceramic resistor is mounted through the bracket, so that the high-temperature-resistant characteristic of the ceramic resistor is prevented from being influenced.

The invention discloses a heat dissipation device of an airborne antenna, the heat dissipation device is applied to an assembled airborne antenna, the heat dissipation device is arranged in a cavity of the airborne antenna, and a resistor is further arranged in the cavity of the airborne antenna. The heat dissipation device at least comprises an outer shell, a PCB (Printed Circuit Board) and a heat-conducting fin, the heat-conducting fin is arranged on the back of the PCB, pins at two ends of the resistor are welded with a circuit on the PCB, and the resistor is attached to the heat-conducting fin through a groove in the PCB; the heat-conducting fin is connected with the outer shell, so that heat produced by the resistor is transmitted to the surface of the outer shell through the heat-conducting fin when the antenna works, and the outer shell exchanges heat with an external space. According to the embodiment of the invention, the heat dissipation problem of airborne antenna electronic components in a narrow space is effectively solved, and the normal work of the antenna is ensured. Moreover, the heat dissipation device is simple in structure and easy to assemble, does not need other auxiliary equipment, and is low in use cost.

Method for manufacturing a printed circuit board (1) with at least one conductor element (2) extending in the printed circuit board (1) between connection points (1d), comprising the steps: a. Step A: Provide a form (3) with at least one recess (3c) for a conductor element (2). b. Step B: Arranging a conductor element (2) in the receptacle (3c) of the mold (3). c. Step C: Connecting the conductor element (2) arranged in the recess (3c) of the mold (3) to an electrically conductive surface element (5) at the positions of the provided connection points (1d). d. Step D: Embedding the conductor element (2) connected to the electrically conductive surface element (5) in insulating material (7) to form the printed circuit board (1). e. Step E: Extracting the connection points (1d) from the electrically conductive surface element (5) by locally removing surrounding sections of the electrically conductive surface element (5), preferably by etching.

A temperature-sensitive battery connector is disclosed. The connector can include a connector body and at least one conductor attached to the connector body and configured to conduct a current signal used to measure voltage from a battery pack or battery cell to a battery management system (BMS). The connector can include a thermal switch device attached to the connector body and thermally coupled to a terminal of the battery pack or battery cell. The thermal switch device can be configured to provide an overtemperature signal to the BMS by altering or interrupting current conducted by the at least one conductor when the temperature of the battery pack or battery cell exceeds a threshold temperature.

The present invention relates to an electrical resistance (1) extending between a first end (2) and a second end (4), comprising a plurality of modules (10) made of an electrically insulating material and a winding (11) wound in turns around the modules (10), each of the modules (10) having an outer peripheral surface (12) and an inner peripheral surface, the modules (10) being arranged side-by-side from the first end (2) to the second end (4) of the electrical resistance (1), thereby defining a volume (44) configured for the circulation of a cooling fluid.

The utility model relates to a lightning arrester and an insulation pull rod thereof, the lightning arrester comprises the insulation pull rod, the insulation pull rod is a split type rod body, the split type rod body comprises a rod body first segment, a rod body second segment and a rod body third segment, the rod body first segment and the rod body third segment are metal rod bodies, and the rod body second segment and the rod body third segment are metal rod bodies. The second rod body section is an insulating rod body, the first rod body section is used for being connected with an upper gland of a lightning arrester core body through a metal nut, the third rod body section is used for being connected with a lightning arrester base through a metal nut, the first rod body section is fixedly connected with the second rod body section, and the second rod body section is fixedly connected with the third rod body section. Therefore, the insulation pull rod provided by the utility model can be ensured to have better insulativity, and meanwhile, the connection of the metal rod body and the metal nut can effectively prevent the matching damage of the insulation pull rod and the insulation pull rod nut possibly caused when the pull force applied to the insulation pull rod is too large, so that the normal service life of the lightning arrester is ensured.

The utility model provides a kind of shunt resistor, it includes: resistor body, insulating support, two electrodes and pin.The two electrodes are respectively arranged at the both ends of resistor body, and mounting through hole is set on each electrode;Pin is worn and is arranged mounting through hole, pin has starting end and tail end, starting end is exposed outside mounting through hole, tail end is welded together with mounting through hole, and tail end is equipped with a root gap near the edge of mounting through hole;Insulating support includes pad and multiple profiling buckles on pad and anti-deviation column.Pin is worn and is arranged mounting through hole, compared with blind hole, mounting through hole gives pin greater contact area, pin is not prone to deviation, and fixed connection is more reliable by welding, pin is not prone to fall off;Insulating support and resistor body and electrode keep close, provide support and place repair resistance when resistor body occurs deformation, profiling buckle and anti-deviation column cooperate and limit two electrodes, prevent external force from leading resistance to occur deformation in the process of fixed pin.

The utility model discloses an aluminum shell resistor, which belongs to the related field of resistor processing technology, and comprises an aluminum shell and a porcelain base body, the porcelain base body is fixedly arranged at the middle position of the inner side of the aluminum shell, screw rods are fixedly arranged at the middle positions of the outer surfaces of the two ends of the porcelain base body, and connecting sheets are arranged between the aluminum shell and the screw rods. The screw rod is installed in the middle of the connecting piece in a penetrating mode, and quartz sand is filled between the aluminum shell and the porcelain base body. Cylindrical mica blocks are installed on the inner sides of the two ends of the porcelain base body, one end of the screw penetrates through the middle positions of the cylindrical mica blocks, and a mica plug is installed on the inner side of the aluminum shell. A traditional wire body connecting structure is replaced, so that the resistor core is in a stable and centered state, the insulation performance of the resistor core is improved, the phenomenon that the lead is damaged in the production and transfer process is avoided, the problem that the withstand voltage is reduced due to the fact that the resistor core moves in the production process is solved, and the withstand voltage performance is improved.

The invention provides a lightning arrester core fixed based on an insulating rod and an assembly method thereof, which are used for solving various problems of a traditional metal oxide lightning arrester core. According to the lightning arrester core body fixed based on the insulating rods, the first groove and the second groove are matched and clamped with the Y-shaped clamping heads at the two ends of the insulating rods, and the core body is fixed through the plurality of insulating rods, so that the additional arrangement of structures such as an insulating cylinder is avoided, and the volume of the lightning arrester core body is reduced; meanwhile, the axial displacement of the insulating rod in the assembling and using processes is effectively avoided, so that the close contact among a plurality of resistor discs is ensured; compared with the prior art, the resistor discs pressed in a Y-shaped clamping mode are higher in stability, the plurality of resistor discs are in closer contact and do not generate gaps, and when the outer sides of the resistor discs are directly wrapped with the rubber jackets, rubber is not prone to permeating into the space between every two adjacent resistor discs.

Resistor arrangement (10) for a tap changer (1) for uninterrupted switching between winding taps of a transformer, the resistor arrangement (10) comprising at least one resistive element (20) which is held by at least two resistive holders (30), characterized by: - a base plate (11) with at least one opening (12) on which the at least two resistance holders (30) for receiving the resistance element (20) are arranged; - a guide (31) formed in each resistance holder (30), wherein each guide (31) positions a first end (201) or a second end (202) of the resistance element (20) with respect to a longitudinal direction (L) between the two resistance holders (30), and wherein the resistance element (20) can be inserted through the opening (12) into each of the guides (31); and - two contact points (24) of the resistance element (20) which, when a resistance element (20) is inserted into the resistance holder (30), can be electrically contacted by a respective contact (40) of the tap changer (1).

The utility model provides a vertically-installed series-connected resistor unit and a circuit breaker closing resistor structure, belonging to the field of circuit breakers, the vertically-installed series-connected circuit breaker closing resistor structure comprises at least two tank bodies, each tank body is internally provided with a vertically-installed series-connected resistor unit, all the resistor units which are vertically installed and connected in series are sequentially connected in series through an elastic electric connection module, the lower end of a cross-core insulating rod in each resistor unit which is vertically installed and connected in series is fixedly connected with a lower side conductor, and the upper end of the cross-core insulating rod sequentially penetrates through a conductive cushion block, a resistor disc, a conductive fixing plate and a first conductive spring from bottom to top and then is fixed to an upper side conductor. And all the resistor discs are spirally arranged and are sequentially connected in series through conductive pieces. The closing resistor structure has the beneficial effects that the hidden danger of deflection deformation of the cross-core insulating rod caused by the gravity of the resistor disc is eliminated, so that the reliability of the whole closing resistor structure is improved.

The utility model relates to joint temperature rise detection technical field discloses a joint temperature rise detection device, including sliding rheostat, the outside sliding connection of sliding rheostat has sliding ring, the rear end fixed connection of sliding ring has the limit post, the front end fixed connection of limit post has fixed link no.

The invention discloses an automobile PTC (Positive Temperature Coefficient) core and controller assembly structure and an automobile air conditioner with the automobile PTC core and controller assembly structure. The PTC core body can be used for heating the air conditioning box; a PCB (Printed Circuit Board), wherein the PTC core body is arranged on the PCB; the PTC core body is perpendicular to the PCB, and the PTC core body and the PCB are connected to form an L-shaped structure; the PTC core body can be inserted into an air conditioning box; and the PCB does not shield the foot blowing air channel. Gaps are formed in the periphery of the PTC, interference with a foot blowing air channel is avoided, the structure change of an automobile air conditioner can be adapted, and the purposes of reducing cost and increasing efficiency are achieved.

The utility model relates to the related technical field of balancing diverters, in particular to an efficient sealing structure for flexible connection of a load balancing type diverter, which comprises a balancing diverter, a butt joint mechanism is arranged at one end of the balancing diverter, and supporting mechanisms are arranged at two ends of the balancing diverter. According to the efficient sealing structure of the load balancing type shunt flexible connection, through the arrangement of the butt joint mechanism, when a butt joint head and an external connection wire are in butt joint together, a first fixing ring surrounds the outer wall of the butt joint head, a first fixing block is clamped into a first fixing groove in the corresponding position, and at the moment, a second fixing ring can surround the outer wall of the external connection wire; a second fixing block is clamped into a second fixing groove in the corresponding position, the effect of reinforcing connection of the butt joint and the external connection wire is achieved, at the moment, a reinforcing plate bonded to the inner wall of the sealing plate can be attached to the joint of the butt joint and the external connection wire, and finally the reinforcing plate and the sealing plate are fixed together through a bolt and a nut. And the sealing performance of the joint of the butt joint and the external connection wire is improved.

The utility model relates to the technical field of resistors, in particular to an embedded resistor unit, which comprises an insulated support tube and a plurality of resistor modules, and two ends of the support tube are penetrated to form a heat dissipation channel; a plurality of limiting grooves are formed in the inner wall of the supporting pipe, and the resistor modules are inserted into the limiting grooves from ports of the supporting pipe in a one-to-one correspondence mode. Each resistor module comprises a plurality of resistor blocks which are arranged at intervals and a conductive strip which is used for positioning the plurality of resistor blocks and is connected in series. Compared with the prior art, the multiple resistor modules are arranged at the limiting grooves in the inner wall of the supporting pipe, more resistor modules can be contained, different numbers of resistor modules can be electrically connected according to needs during use, and use is more flexible; and when a local resistor module breaks down, the corresponding resistor module can be conveniently replaced, so that the whole resistor is not scrapped, and the application cost is saved.

A stereoscopic arch ignitor resistor and manufacturing method thereof are provided. The stereoscopic arch ignitor resistor includes a substrate, an alloy layer, a combustible material accommodating portion, and a lateral conductive layer. The alloy layer is disposed on a first surface of the substrate. The alloy layer includes an arch lead, a first connecting portion, and a second connecting portion. The combustible material accommodating portion is positioned between the arched lead and the substrate. The arch lead defines a volume of combustible material of the combustible material accommodating portion. The lateral conductive layer is disposed on the alloy layer. The lateral conductive layer abuts against a side surface of the substrate. The stereoscopic arch-type ignition resistance element is configured to reduce ignition distance and / or increase contact area with combustible material.

The utility model belongs to the technical field of NTC supports, and particularly relates to a flexible abutting NTC support which comprises an NTC supporting plate and a buckle plate connected to one end of the NTC supporting plate, a positioning bottom plate is installed on the bottom face of the NTC supporting plate, and a positioning rod is connected to the inner side of the positioning bottom plate. According to the utility model, when the NTC support plate and the buckle plate are supported with an electrical element, the bottom surface of the electrical element is in contact connection with the surface of the support plate, and the linkage plate at the bottom end of the support rod is driven to extrude the buffer spring, so that the electrical element can be supported by the NTC support plate and the buckle plate. When the NTC bracket is pressed, the buffer spring is driven to be extruded and deformed, and meanwhile, the bottom surface of the electrical element is driven to be in contact with the surface of the elastic gasket, so that the NTC bracket and the electrical element are conveniently and flexibly abutted, and the NTC bracket can select different rigidities and pre-tightening forces according to requirements so as to adapt to different application scenes and the size and weight of the NTC element.

A system includes an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module, the power module including a thermistor assembly, the thermistor assembly including: a ceramic substrate; a thermistor element on the ceramic substrate; a protective coating disposed on the thermistor element so that the thermistor element is between the protective coating and the ceramic substrate; and a terminal electrode on the ceramic substrate, wherein an angle between a surface of the terminal electrode facing the protective coating and a surface of the protective coating facing the terminal electrode is greater than 90 degrees.

The utility model discloses an electromagnetic induction type rocker potentiometer which comprises a body, an upper rocker arm, a lower rocker arm, a rocker, a supporting device, a spring, a sliding block, a circuit board and a fixed support, and the rocker sequentially penetrates through the body, the upper rocker arm and the lower rocker arm and is connected with the lower rocker arm; the lower end of the rocker is axially provided with a rocker center hole, the cylinder portion of the supporting device is movably inserted into the rocker center hole, the lower end of the spring is installed in the cylinder portion, and the upper end of the spring abuts against the top end of the rocker center hole. The fixing support is connected with the body, the circuit board is installed on the fixing support, and the disc-shaped base of the supporting device penetrates through a middle hole of the circuit board and abuts against the fixing support. Swinging parts of the upper rocker arm and the lower rocker arm are movably connected with the sliding block; the circuit board is provided with a magnetic induction module, the sliding block is provided with a permanent magnet, and the permanent magnet is matched with the magnetic induction module in a magnetic induction mode. No isolation plate is arranged between the magnet and the magnetic induction module, so that the induction sensitivity is high; the supporting device is good in stability, and the rocker is good in resetting and centering effect.