33results about How to "No bad contact" patented technology

The object of this invention is to prevent damage to the vibration damping property of a brush even for a violent vibration, and to enable frequently a stale contact between the brush and a commutator. The brush (5) is disposed at an elevation angle less than 45 degrees relative to a brush base (4) fixed to a bracket (3) such that the free end thereof is connected slidably to a flat commutator. The flat portion (5a) of the base portion of the brush is fixed to the exposed portion (4b) of the pattern (4a) of the brush base 4 by soldering. The base portion of the brush is coated with ultraviolet curable acrylic-based resin (6) to cover, at a maximum, about 1 / 3 of the projection length of the side face from the base portion to the brush arm portion of the brush.

The invention relates to the technical field of ultrasonic processing and discloses an ultrasonic main shaft, which is characterized in that on one hand, a wireless transmitting assembly and a wireless receiving assembly are arranged on the ultrasonic main shaft, and non-contact type electrical conduction is formed between a rotating shaft and a cylinder seat, so that the abrasion of a conductivestructure can be avoided, the service life of the main shaft is prolonged, and the cutting operation effect of high-frequency vibration is improved; and on the other hand, since conductive pieces areall concentrated on a rod body, the double para-position is converted into a single para-position, which greatly reduces the difficulty of the alignment, therefore, in the process of sleeving an ultrasonic knife handle and a rotating shaft, only the rod body is butted with a blind rivet, the conductive pieces and a conductive body can form effective electric connection, and furthermore, stable electrical conduction can be formed between the ultrasonic knife handle and the rotating shaft, and no contact failure occurs. In addition, the invention also provides an ultrasonic machine tool which also has the advantages of stable electrical conduction, good processing effect and the like.

The invention relates to the ultrasonic processing technology field and discloses an electric connection structure of an ultrasonic main shaft. Two conductive components are concentrated in a rod bodyat a rear end of a pop rivet and two conductors are concentrated in a front end of a pull rod so that a contact electrical connection portion of an ultrasonic knife handle and a rotating shaft is located in the ultrasonic knife handle or the rotating shaft, and is not exposed in a gap between the ultrasonic knife handle and the rotating shaft. Therefore, an electric leakage phenomenon can be avoided and a potential safety hazard is eliminated. At the same time, the two conductive components are concentrated in the same rod body so that double counterpoint is converted into single counterpoint, which greatly reduces counterpoint difficulty. During a sleeve joint process of the ultrasonic knife handle and the rotating shaft, the rod body and the pull rod only need to be connected and the conductive components and the conductors can form effective electric connection. And then, stable electrical conduction can be formed between the ultrasonic knife handle and the rotating shaft, and poorcontact is not generated.

The invention provides a vacuum film-plating process for a gate pattern of a semiconductor chip shielded by a mask at high accuracy. The vacuum film-plating process is characterized in that a gate mask is aligned with the gate electrode of the semiconductor chip at high accuracy; the gate mask is fixed by a high-temperature-resistant strong magnet; and technological methods of secondary vacuum film plating, primary photoetching and primary chemical corrosion are adopted. Through adoption of the vacuum film-plating process, a large quantity of raw materials are saved; a production period is shortened; and process error accumulation caused by repeated photoetching and chemical corrosion is eliminated at the same time. The vacuum film-plating process has the advantages of simple technological methods, short production period, high production accuracy, reliability, easiness in control, saving of raw materials, superior device performance, high product yield and the like. The vacuum film-plating process plays a role in revolutionarily prompting a vacuum film-plating technology for a high-power thyristor semiconductor chip. Through adoption of the vacuum film-plating process, the yield is increased greatly, and a tremendous economic benefit is achieved.

The object of this invention is to prevent damage to the vibration damping property of a brush even for a violent vibration, and to enable frequently a stale contact between the brush and a commutator. The brush (5) is disposed at an elevation angle less than 45 degrees relative to a brush base (4) fixed to a bracket (3) such that the free end thereof is connected slidably to a flat commutator. The flat portion (5a) of the base portion of the brush is fixed to the exposed portion (4b) of the pattern (4a) of the brush base 4 by soldering. The base portion of the brush is coated with ultraviolet curable acrylic-based resin (6) to cover, at a maximum, about 1 / 3 of the projection length of the side face from the base portion to the brush arm portion of the brush.

A reactor unit includes a winding coil having aluminum wires wound around an iron core, and a copper-made electric terminal connected to end parts of the winding coil, in which the electric terminal has a pressing and connecting part for pressing and connecting aluminum wires of the winding coil at one end, and a welding part of a nearly flat shape at other end, so that the electrical connection between dissimilar materials is realized at low cost and high reliability.

The invention belongs to the technical field of illumination devices, and in particular relates to a safe lamp holder solving the technical problems of poor technical safety, and the like of the prior art. A jack is arranged at one end of a body and internally provided with a conductive leaf spring, the outer surface of the body is provided with a threaded section for mounting a lampshade, the body is provided with an electrode at the other end and provided with a transversal channel at one side, one port of the transversal channel is arranged at one side of the conductive leaf spring, the other port of the transversal channel is arranged at the threaded section, and the transversal channel is internally provided with an elastic clutch mechanism which can ensure that the electrode is electrically connected with the conductive leaf spring under the action of the lampshade when the lampshade is mounted in the threaded section of the body and can ensure that a circuit between the electrode and the conductive leaf spring is broken when the lampshade is separated from the threaded section of the body. The invention has the advantages of simple structure, easy processing, manufacture and assembly, safety, reliability, high working stability, long service life without causing poor contact after long-term use, can be used for normally switching on the internal circuit when the lampshade is mounted and can be used for switching off the internal circuit when the lampshade is dismounted so as to avoid burning or electric shock accidents.

The invention relates to a positioning conducting bar of an electrolytic bath. The positioning conducting bar comprises a body; multiple rows of hanging holes for positioning polar plates are formed in the surface of the body and include insulated hanging holes and conducting hanging holes which are parallel with each other, are interactive pairwise and do not communicate with each other; the conducting hanging holes are formed opposite to and beside each insulated hanging hole; the insulated hanging holes are formed opposite to and beside each conducting hanging hole; the body is made of a conducting material; insulated pieces made of insulated materials are fixed in the insulated hanging holes; and the edges of the insulated pieces protrude out of the body. The positioning conducting barhas the advantages of reasonable structural design, stable electrolysis, high conductivity and the like.

The invention discloses a line inspection device for a 110 type voice distribution frame. The line inspection device for the 110 type voice distribution frame comprises a probe, a function switching module, a telephone module and a line inspection detecting module; the probe is connected with a universal meter detecting module and a line inspection detecting module respectively through the function switching module; the probe comprises a metal probe; the tail end of the metal probe is connected with a wire; the connecting part of the wire connected with the metal probe is wound with insulating rubber tape; and the line inspection device further comprises a detachable insulated handle used for clamping the metal probe. The line inspection device for the 110 type voice distribution frame realizes online measurement of a line side without destroying the structure of the 110 type distribution frame, has no influence to other running devices, is good in connection performance with the distribution frame, has no poor contact phenomenon, improves call quality and is flexible, convenient and easy to use; and with the line inspection device, one person can finish line connection and dialing test work, so the work efficiency is improved.

The invention provides a trigger control device and a trigger control method. The trigger control device is used for starting a combined data acquisition host to execute the corresponding functional action; the trigger control device comprises a Bluetooth communication module, a control module, a power supply module and a shell for accommodating the previous components; the Bluetooth communication module establishes a connection between the trigger control module and the data acquisition host; and the control module controls the Bluetooth communication module to send a trigger signal so that the data acquisition host receives the trigger signal and is started. Therefore, the trigger control device starts the data acquisition host in a Bluetooth communication mode which is not easily disturbed so as to solve the problem of trigger failure caused by poor contact or disturbance susceptibility in the prior art.

The invention relates to a high-intensity lower jig for butt welders, which is characterized in that two sets of lower jig engaging lugs (2) are cast on a permanent seat mounting plate (3); a fixed support block (4) is cast between the two lower jig engaging lugs (2); a horizontal plane of a copper electrode seat (5) in a shape of '7'is arranged on the fixed support block (4); a vertical plane ofthe copper electrode seat in the shape of 7 is laterally provided with a cooling pipe (6); a plurality of threaded holes (7) are arranged on the vertical plane beneath the cooling pipe. The high-intensity lower jig for butt welders has the advantages of high intensity, shock resistance, convenient assembly, firm locking, resistance to damage, flexible operations, fine conductibility and long service life.