30results about How to "Avoid Soldered Connections" patented technology

The method of repairing plate part of automobile includes setting sucking disc in the notched part, pumping out air from the sucking disc, drawing the sucking disc to draw out the notched part and knocking to restore the original shape. Compared with available repairing method, the method of the present invention has the advantages of no need of welding, less deformation and damage of the plate part and simple operation.

An electronic package for use with a printed circuit board is provided. The electronic package includes a ground layer having an upper and lower section, a semiconductor chip, a conductive signal layer and a ground plane having a first section electrically connected to the upper section of the ground layer and a second section substantially planar with said lower section of said ground layer, the second section of the ground plane having an additional area to prevent cracking of a solder connection between the ground layer, the ground plane and the printed circuit board.

A piezoelectric resonator comprises: an insulating package provided with a concave portion at a lower region thereof, an piezoelectric resonator installed within the concave portion of the insulating package; a lid sealing a lower opening of the concave portion; and a metal lead terminal of which a upper region is electromechanically connected and fixed to the outer terminal installed at the outer surface of the insulating package, and a lower region thereof is projected downward from the lid. The metal lead terminal includes a drooping portion extending along the side surface of the insulating package and a connecting member extending from the lower part of the drooping portion. The drooping portion is not constrained from the connecting member, and the drooping portion and the connecting member are capable of elastically deformed.

The invention relates to a multi-block main cable saddle structure. The main cable saddle of a suspension bridge is divided into an upper saddle head and a lower saddle head through partitioning interfaces. The partitioning interfaces are located in the position 30+/-5cm below a cable bearing trough bottom plate for a main cable. Concave-convex seams are adopted at the partitioning interfaces. End transverse ribs at the partitioning interfaces are connected through splice plates and high-strength bolts at the concave-convex seams. The upper saddle head and the lower saddle head are each equally divided into three blocks through the transverse partitioning interfaces in the longitudinal direction. The two end transverse ribs are arranged on the two sides of each transverse partitioning interface respectively and connected through the high-strength bolts. By means of the multi-block main cable saddle structure, the partitioned blocks can be quickly mounted on site; residual welding stress caused by super-thick plate welding is avoided through the partitioned blocks in the height direction, the upper saddle head and the lower saddle head are tightly connected together under the action of the powerful vertical main cable pressure; the concave-convex seams facilitate high-altitude hoisting and splicing and can also resist unbalanced horizontal shear force; by adopting the partitioned blocks, the weight of a single saddle body is reduced, casting, transporting and hoisting are facilitated, and the multi-block main cable saddle structure is particularly applicable to large-span suspension bridges in mountainous areas where transportation condition limitations exist.

in particular a low height small-sized high power AC, DC electromagnetic relay with a plurality of contacts by utilizing a press-button arrangement, wherein a seesaw structure press-button mechanism is arranged on the top of the outer casing, one end will move forward and backward through the press-button, the other end of the press-button will drive the moving reed row of the relay, thus realizing the contact conversion. The moving reed lead-out sheets are also linked into lead-out row through the insulation member, and are connected through rivet compression, the press-button is mounted on the side surface of the outer casing, a support rotation shaft is arranged at the center of the press-button.

The invention relates to a turbo machine (1), comprising a bearing housing (30), shafts (40',40'') supported on an inner chamber(31) of the bearing housing (30) rotatably, working impellers(25',25'') connected with longitudinal end parts(41',41'') of the shafts (40',40'') on a material and arranged on the outside of the inner chamber(31) and in a working impeller chamber(22), and a seal member(50) arranged on the circumferences of the shafts (40',40'') to thereby seal the inner chamber(31) relative to the working impeller chamber(22); wherein, the seal member is used for sealing the common effect of two seal surfaces(51',52',51'',52'') rotated oppositely. The invention aims to provide a turbo machine which prevents an undesired welded loose release between the working impellers and the shafts reliably by forming and arranging the seal surface materials of at least one seal surface of the two seal surfaces on isolation layers(T',T'') between the seal member and the working impellers.

The invention relates to an electromagnetic relay, in particular a low height small-sized high power AC, DC electromagnetic relay with a plurality of contacts, which comprises a magnetic circuit system, a contact system and a chassis portion, wherein at least a group of moving reeds of the contact system are linked into moving reed row through an insulation member, the moving reed lead-out sheets are linked into lead-out row through the insulation member, the moving reed lead-out row and the moving reed row are linked into the moving reed portion of the relay.

The invention discloses an A COCS combine bridge deck structure which comprises an asphalt abrasion layer, a UHPFRC layer, a Waterproof layer, CLT top board, a corrugated sheet steel board and a diaphragm board, all of which are orderly arrayed from the top to the bottom. The UHPFRC layer is provided with a ribbed reinforcing steel mesh, the asphalt abrasion layer is laid on the surface of the UHPFRC layer, the waterproof layer is laid on the surface of the CLT top plate, and the UHPFRC layer is connected with the CLT top plate through a shear connector. A CLT top board, the c corrugated sheet steel board and the UHPFRC layer are combined organically, A PZ-type shear connector and a screw connector are used to effectively combine that parts, The advantages of each material are further brought into play to avoid the welding connection of the traditional structure, to overcome the problem of stress concentration at the vulnerable position caused by the number and collection of the structural weld seams, to improve the fatigue resistance of the orthotropic plate, to improve the integrity of the assembled building, to facilitate the manufacture and installation, to be simple in maintenance and to be low in production cost.

The invention relates to a mounting aid and method for mounting electrical components on a printed circuit board. The mounting aid for mounting electrical components (6) onto the printed circuit board(9) includes a body (1) comprising compartments for receiving the electrical components (6), with the compartments having a base with openings (3) for the insertion of connection wires (7) of the electrical components (6), and metal parts (2) fastened to the body (1), wherein the metal parts (2) each form at least one contact pin (5) on the underside of the body (1) and each from a busbar for connection to electrical components (6) in a plurality of compartments of the body (1).