5results about How to "Improve pullout force" patented technology

This application relates to a bracket assembly, a windshield assembly, and a vehicle. When an optical element is assembled on the bracket body or removed, the limiting member is in a loosened position, and each abutment part and clamping arm is separated from each other. When the fixed shaft is inserted between the two clamping arms, it can push the two clamping arms apart. When the fixed shaft is pulled out of the two clamping arms, it can also push the two clamping arms apart. When the optical element is inserted between the two clamping arms, the limiting member is in a pressed position, and each abutment part abuts against each clamping arm, so that the two clamping arms are tightly abutted against the opposite sides of the fixed shaft. This ensures that the insertion force of the optical element is small and the extraction force is large during the assembly process. In addition, the tension of the retaining spring remains unchanged, and the extraction force between the retaining spring and the fixed shaft is stable over a long period of time. Furthermore, the interference fit between the retaining spring and the fixed shaft can be reduced to reduce the insertion force.

This utility model discloses a nylon-reinforced cement nail mold and cement nail, relating to the field of injection molding technology. The mold includes a lower mold and an upper mold: the lower mold has nail tip positioning holes to fix the nail tip, and the upper mold has a nail head positioning groove on the top. After the mold is closed, an annular cavity and a recessed cavity are formed. Nylon material is synchronously filled through an integrated flow channel, forming a mechanical interlocking structure. The four corner guide pillars and guide sleeves of the mold adopt a conical fit for self-alignment. The ejection mechanism of the lower mold pushes the nail tip through a conical ejector pin. The bottom of the annular cavity and the side wall of the recessed cavity are provided with multi-stage injection channels, with micropores distributed radially and spirally to uniformly fill the material. The pressure plate of the upper mold presses the nail head through hinges and elastic fasteners. The product produced using this utility model has both high strength and impact toughness, effectively improving fastening and seismic performance, solving the problems of easy falling off and insufficient strength of traditional cement nails. It is suitable for the field of building decoration and has the advantages of compact structure and stable performance.

This invention belongs to the technical field of phase change heat transfer elements, specifically relating to a device and method for removing segmented mandrels. The invention includes a hydraulic motor, a winch, steel wire, a special clamp, a support platform, a baffle, and a worktable. The winch is mounted on the worktable, and the hydraulic motor is connected to the winch via a coupling. Steel wire is wound on the winch, with one end connected to one end of the special clamp, and the other end of the special clamp connected to the segmented mandrel. The upper surface of the support platform has a V-groove, and the workpiece containing the four-segmented mandrel is placed in and fixed within the V-groove of the support platform. A baffle is provided at the end of the support platform near the segmented mandrel. This invention provides a stable and powerful axial pulling force through a hydraulic system, and utilizes a special clamp and a step-by-step blocking mechanism to achieve reliable clamping and sequential, individual pulling of the segmented mandrel, solving the problems of difficult, inefficient, and easily damaged manual removal, thus improving the manufacturing quality and production efficiency of phase change heat transfer elements.

A new type of photovoltaic frame corner code and photovoltaic panel assembly, the corner code comprises: the cross section is L-shaped and has two inner side wall surfaces, namely interference surface wall Ⅱ and interference surface wall Ⅳ, which intersect with each other, interference surface wall Ⅰ and interference surface wall Ⅲ extend in parallel and are separated from interference surface wall Ⅱ and interference surface wall Ⅳ, respectively, to form an interference surface wall for inserting the photovoltaic frame, wherein the corresponding end of interference surface wall Ⅰ and interference surface wall Ⅲ is connected to the base structure at the intersection point. The photovoltaic panel assembly comprises the above-mentioned corner code, a long frame and a short frame in the form of photovoltaic frame respectively spliced with the corresponding slot space of the corner code by using the corresponding inner side frame edge, and the base structure of the corner code is embedded in the inner side space of the long frame and the short frame. In this way, the pulling force between the long and short photovoltaic frames can be strengthened, stronger pulling force can be resisted, and the overall frame stress intensity can be strengthened.

This invention provides a variable-force, self-recovering shape memory alloy wire puller, comprising a pin, a housing with a hollow cavity, a movable pull plate, a shape memory alloy wire, a spring, and a fixed pull plate. The pin, housing, movable pull plate, spring, and fixed pull plate are coaxially arranged. The fixed pull plate is fixed within the hollow cavity of the housing. The movable pull plate is installed within the hollow cavity of the housing and slidably engaged with the housing via the pin. The movable pull plate and the fixed pull plate are axially slidably engaged. The pin is fixedly connected to the movable pull plate. The spring is clamped between the fixed pull plate and the movable pull plate. The shape memory alloy wire is wound between the fixed pull plate and the movable pull plate. The advantages of this invention are: improved puller force; variable wire diameter and winding number of times; automatic recovery after use; and simple assembly.