128 results about "Shrink-fitting" patented technology

This discloses an electronic component of a miniature size to be used as e.g. automobile engine peripheral components, such as an exhaust gas oxygen sensor, a heat sensor, and a heater. More specifically, the invention provides an electronic component integral with a heat resistant terminal that is pressure-fitting or shrink-fitted on a ceramic element of the electronic component. This electronic components shows great mechanical and electrical performance, withstanding the high temperature environment over 400 and up to 800 DEG C. to which the ceramic element of the component required expose. The terminal incorporated in this high temperature electronic component comprises a plurality of metal wire leads that electrically connect to a surface of a bar-like ceramic element, at least two ceramic insulators that surround the leads, and a thermal resistant metal ring that shrink-fits or pressure-fits around the ceramic insulators so that the metal leads press in a radial direction holding the element firmly. The thermal resistant metal ring to be used for this shrink fit or pressure fit is preferably made of an alloy, such as Incoloy 909, Inconel 650, and Waspaloy, and the like, thereby preventing the metal leads from coming off at high temperature. The terminal integrated with the ceramic element by the shrink fitting method according to the invention, minimizes the number of parts, attaining a miniaturization of such high temperature electronic component at a low cost.

A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner portion, and suitable electroplating material disposed on at least one of the faying surfaces. The wheel assembly may be heated under suitable conditions to provide diffusion bonding across interfacing faying surfaces to produce an integral wheel structure. Appropriate quenching, tempering, and finishing processes may be utilized to obtain desired properties. An article formed thereby includes an inner body portion obtained from a worn railroad wheel and a metallurically bonded outer circumferential portion. The outer portion may comprise a composition selected for desired wear characteristics.

An electric motor includes an annular housing and an annular stator core having the inner periphery the shape of which differs from a perfect circle. The stator core is supported by the housing in such a manner that the outer periphery of the stator core and the inner periphery of the housing are partially in contact with each other. The inner periphery of the stator core is deformed to become close to the shape of the perfect circle when the stator core is securely fitted in the housing by shrink fitting.

A method for joining a first component surface to a ceramic component surface includes cold gas-dynamic spraying a first metal powder onto the ceramic component surface to form a first metal coating. The first component surface is then bonded to the metal coating on the ceramic component surface. The bonding step may be a thermal process such as a brazing process. A mechanical bond may also be formed by an interference fitting such as press or shrink fitting.

A tool box includes a molded box body and a logo plate mounted securely within a recess formed in an outer face of the molded box body through a shrink-fit process. The recess is confined by a recess-defining wall that has a bottom wall portion and a peripheral wall portion extending from the bottom wall portion to the outer face. The logo plate is retained securely by the peripheral wall portion. The logo plate is fitted into the recess while the molded box body, which is formed through a hot molding process, is still in a hot softened state.

A non-contact type rotational angle detection apparatus can reduce the number of parts required, improve productivity, and prevent a relative displacement between a permanent magnet and a yoke. An insert molded body is fixedly secured to a shaft and is composed of a permanent magnet and a yoke formed integrally with each other by insert molding of a resin. A non-contact sensor is disposed in an inner space formed in the insert molded body. The non-contact sensor detects a rotation angle of the shaft by detecting an azimuth of magnetic flux lines generated by the permanent magnet. The cylindrical yoke is fixedly secured by shrinkage fitting to the cylindrical permanent magnet disposed at an inner side thereof. An engagement margin between the permanent magnet and the yoke is set equal to or greater than a value which restrains a relative displacement between the permanent magnet and the yoke.

A cylindrical reinforcing collar is fitted onto a cylindrical gas discharge section of a tank body and then engaged integrally on the exterior of the tank body between the cylindrical gas discharge section and the dome section by shrink fitting. This provides, easily and inexpensively, a high-pressure tank capable of withstanding high pressures of 35 to 75 MPa while keeping its lightness in weight.

There is provided a piston assembly configured to include: a hollow cylinder-shaped magnet sleeve having a magnet(s) bonded on external circumferential surface thereof; a hollow cylinder-shaped piston inserted into a hollow space of the magnet sleeve; and a hollow disc-shaped ring fixed to the piston by a shrink fitting process, and welded to the magnet sleeve which is made of the same material as the ring so as to obtain a configuration of the piston assembly in which the magnet sleeve and the piston are coupled to each other.

Disclosed is a cylindrical fixed member of a thread-groove exhaust pump unit, with which the cost of a vacuum pump can be reduced while the strength thereof against breakdown torque is maintained, in which thread grooves having complicated shapes of which width, depth, lead angle, and the like change in the rotation-axis direction of a rotating member of the thread-groove exhaust unit can be easily formed, and that is suitable for improving exhausting performance and compression performance of the entire vacuum pump by using such thread grooves. A cylindrical fixed member (thread-groove exhaust unit stator (18)) of a thread-groove exhaust unit (Ps) disposed so as to enclose the outer circumference of a rotating member (substantially the lower half of a rotor (6)) of the thread-groove exhaust unit (Ps) forms a helical thread-groove exhaust path (S) for exhausting gas between the rotating member and the cylindrical fixed member. This cylindrical fixed member includes two or more separable pieces (18A, 18B) that can be divided in the rotation-axis direction of the rotating member, and the separable pieces are joined together using a fastening means such as bolts or a joining means such as shrink fitting.

An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine is adapted to pass through holes contained in laminations of the core structure. The insulated core stud has a central portion and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least the central portion of the core stud that passes through the laminations. One or more additional layers of heat shrinkable tubular insulation are shrunk fit onto at least a portion of the first layer of insulation that passes through the laminations. These second layers provide mechanically protection to the underlying layers of insulation against breaks occurring in the electrical insulation when the laminations and core studs are assembled into the core structure.

To provide an electric compressor in which the occurrence of shrink-fitting failures can be prevented when a stator is shrink-fitted in a motor case. Provided are a casing (67) in which the inner circumferential surface of the cylinder is provided with a first inner circumference (101) and a second inner circumference (103) whose radius is larger than the first inner circumference (101), the inner circumference (101) having an inclination that becomes more distant from a central axis (C) from a bottom face (79) toward an opening (85); a compressing unit that compresses fluid; and a rotor and a stator that rotationally drive the compressing unit, wherein the first inner circumference (101) and the second inner circumference (103) are provided with a substantially cylindrical insertion surface (105) whose radius is larger than the second inner circumference (103) and in which the stator is inserted; and at least the first inner circumference (101) is provided with an enlarged diameter portion (109) whose radius is larger than the insertion surface (105) and which makes the distance from the end at the opening (85) side of the insertion surface (105) to the opening (85) substantially equal.

A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goes into contact with the frame when the stator and the ring member thermally expand, whereby the stator and the ring member are efficiently cooled.

The invention discloses an assembly technology of a precise cycloidal speed reducer. The assembly technology of the precise cycloidal speed reducer mainly comprises the following steps of A detecting and grouping key parts, B installing a crankshaft into a coordinate hole of a cycloidal gear, C installing an output disk supporting shaft into an output disk, D assembling an inner gear, E placing the cycloidal gear and a crankshaft assembly into the inner gear, F installing a pin gear, G installing an input end disk, H adjusting the axial clearance of tapered roller bearings of the crankshaft and I installing a planet wheel and a center shaft. According to the assembly technology of the precise cycloidal speed reducer, the key parts are assembled in a grouped manner, the assembly difficulty is lowered, and the tolerance fit precision is improved; shrink fitting is applied to the pin gear, so that the problem that interference is prone to happen in the installation process of the pin gear is solved, the assembly technology is reasonably optimized, and the assembly quality of the whole machine is improved.

A machine and method for shrink-fitting shrink film onto packaged goods, in particular for packaging packing units, having a conveyor for transporting the packaged goods. In order to reduce the energy consumption and simultaneously to improve the shrinking result, the machine has hood type shrink devices which are moved along at least a part of the path with the packaged goods moved on the conveyor.

A shaft-gear connection comprises a shaft and a shrunk-on gear that has an axial first section, attached by a first shrink-fit bond, and an axial second section, attached by a second shrink-fit bond. The second shrink-fit bond is greater than the first shrink-fit bond so that a greater maximum torque to be transmitted from the gear to the shaft by the second shrink-fit bond than by the first shrink-fit bond. An axial intermediate section, attached by a third shrink-fit bond, is located between the axial first section and the axial second section. Both a surface pressure and a maximum torque that can be transmitted by the third shrink-fit bond are greater than the surface pressure and the maximum torque that can be transmitted by the first shrink-fit bond, but are less than the surface pressure and the maximum torque that can be transmitted by the second shrink-fit bond.