82results about How to "Size match" patented technology

The present invention is directed to a high variable power zoom lens that ensures a flange-back or a backfocal distance required for typical 35-mm film cameras while keeping an angle of view sufficient to cover the wide-angle for an APS-size imaging plane dimensioned smaller than 35 mm. The high variable power zoom lens has the first lens group L1 of positive refractivity closest to the subject, the second lens group L2 of negative refractivity second closest to the subject, the third lens group L3 of positive refractivity, and the fourth lens group L4 of positive refractivity farthest from the subject, and the zoom lens satisfies the requirements 0.6≦|f 2| / fW≦0.73 where f2 is the focal length of the second lens group and fW is the focal length of the entire optics moved to the wide-angle end, and also satisfies the requirements 2.2≦f3 / fW≦3.7 where f3 is the focal length of the third lens group.

Disclosed is a structure of electromagnetic wave resistant connector for flexible flat cable. A flexible flat cable defines an insertion device mounting section to which an insertion device is mounted. The insertion device includes a metal member that is at least partly formed of a metal material. The flexible flat cable forms thereon conductive traces on which an insulation layer is provided. The insulation layer has a surface, which forms, in at least a portion thereof, a conductive shielding layer. The conductive shielding layer extends to the insertion device mounting section, so that when the insertion device is mounted to the insertion device mounting section, electrical connection is formed between the metal member of the insertion device and the conductive shielding layer.

An extension piece for length-reduced memory card includes a base and a case assembled to and covering an outer surface of the base. The case is provided below two lateral sides with two inward open-sided guide channels, front ends of which are adapted to receive two rear corners a length-reduced memory card, and at a top with a retaining structure for releasably engaging with a retaining slot provided at a rear end of the memory card. The extension piece firmly connected to the rear end of the memory card extends the length of the memory card to match the size of an existing card slot on a card reading apparatus, so that the length-reduced memory card could still be conveniently inserted into and moved out of the card slot.

The invention discloses a telescopic LED lamp tube with double faces emitting light. The telescopic LED lamp tube comprises an LED lamp tube body. A first end cap is arranged at one end of the LED lamp tube body. A sliding block is arranged on the outer side wall of the first end cap. The sliding block is provided with a movable elastic device. The elastic device comprises a sliding part matched with the sliding block, a spring installed in the sliding part, and an end cover matched with the end of the sliding part and used for blocking the spring. According to the telescopic LED lamp tube, due to the fact that the sliding part and the spring are arranged at the end of a conventional LED lamp tube, an elastic structure is assembled on the LED lamp tube, firm connection can be achieved under the elasticity of the spring when errors exist between the length of the lamp tube and a lamp box, the problem that installation and fixation cannot be conducted when errors exist between the lamp tube and the lamp box is solved, and the practical value of the LED lamp tube is greatly improved.

An extension piece for length-reduced memory card includes a base and a case assembled to and covering an outer surface of the base. The case is provided below two lateral sides with two inward open-sided guide channels, front ends of which are adapted to receive two rear corners a length-reduced memory card, and at a top with a retaining structure for releasably engaging with a retaining slot provided at a rear end of the memory card. The extension piece firmly connected to the rear end of the memory card extends the length of the memory card to match the size of an existing card slot on a card reading apparatus, so that the length-reduced memory card could still be conveniently inserted into and moved out of the card slot.

A capacity grading movement mechanism compatible with various types of polymer soft package lithium batteries comprises a mechanism bottom plate, probe position adjusting and clamping devices, a battery tray supporting device, a battery tray and an electrical component mounting block; the mechanism bottom plate is provided with an installation datum and is used for supporting and installing the components of the capacity grading movement mechanism; the probe position adjusting and clamping devices are symmetrically arranged on the left side and the right side of the mechanism bottom plate respectively and used for clamping polymer soft package lithium battery tabs; the battery tray supporting device is arranged on the mounting reference surface of the mechanism bottom plate, is positioned on the inner side of a tab position adjusting device and is used for bearing a soft package lithium battery tray; the battery tray is located over the battery tray supporting device and used for bearing soft package lithium batteries; and the electrical component mounting block is arranged on the mounting reference surface of the mechanism bottom plate. The mechanism has the beneficial effects that the mechanism has the characteristics of being simple in structure, easy to assemble, wide in applicability and the like; on one hand, the mechanism can adapt to soft package lithium batteries with different tab distribution modes, on the other hand, the mechanism is also convenient to adapt to soft package lithium batteries with different tab sizes, and has great applicability.

The invention relates to a plug contact (1) for electrically contacting a circuit board (2) by means of the insertion of the plug contact (1) into a contact hole (3) of the circuit board (2). The plugcontact comprises two contact legs (4, 5), which are resilient relative to each other, a connection region (6), and a connecting region (7), wherein the connecting region (7) connects the two contactlegs (4, 5) to one another and to the connection region (6) and the plug contact (1) is stamped from a flat metal material and is bent. The plug contact (1) according to the invention enables securecontacting, even in the case of a small material thickness of the flat material, in that the two contact legs (4, 5) each have a first section (4a, 5a) and a second section (4b, 5b) adjoining the first section in the insertion direction (E) of the plug contact (1), wherein the two contact legs (4, 5) are bent from the plane of the connecting region (7) such that the connecting region (7) and the first regions (4a, 5a) of the two contact legs (4, 5) adjoining the connecting region (7) together form a U-shaped contour, and that a contacting region (4c, 5c) that contacts the contact hole (3) in the inserted state is formed on each of the outer faces of the two sections (4b, 5b) of the two contact legs (4, 5), which outer faces face away from each other.