44results about How to "Realize shielding function" patented technology

The present invention relates to the technical field of high-voltage switch devices, and particularly relates to a support conductor and a high-voltage switch using the conductor. The support conductor includes a recessed opening. The recessed opening includes a bottom surface used for fixing a static contact and used for conductively contacting with the static contact, and a side wall used for shielding the static contact. The support conductor of the present invention is provided with the recessed opening allowing the static contact to sink into, the bottom surface of the recessed opening is in conductive contact with the static contact, the side wall of the recessed opening can shield the static contact, and an extra shielding structure is not needed. In addition, after the static contact is installed, the height is lowered, so that the diameter of a switch cylinder is effectively reduced. Due to the compact structure design of the support conductor, product assembling difficulty is lowered, the production cycle is shortened, and the product structure is optimized, further, a good electric field structure is obtained, and the electrical property of the product is improved.

The invention belongs to the technical field of electrical equipment and particularly relates to a PCB (printed circuit board) signal unit shield grounding device. The PCB signal unit shield groundingdevice comprises a shielding case used for shielding PCB signal units, connecting pieces are arranged on the outer side of the shielding case, and after the PCB signal units are shielded by the shielding case, the connecting pieces contact with the inner wall of a cabinet shell provided with a PCB. The shielding case used for shielding the PCB signal units is arranged, the connecting pieces are arranged on the shielding case, and the PCB signal units are shielded and grounded, so that problems that PCB signal units are grounded badly leading to mutual interference in the prior art are solved,the PCB signal units are assuredly well grounded, good shielding effect is achieved, normal use of the PCB signal units and the PCB is guaranteed, and good use functions are achieved.

The invention discloses a shielding insulating body, a shielding connector and a manufacturing method for the shielding connector. The insulating body is ejection-molded, and comprises a top surface, a bottom surface and a plurality of through holes, wherein the top surface and the bottom surface are opposite to each other; and the plurality of through holes penetrate through the top surface and the bottom surface. A metal material layer is arranged from the bottom surface to the top surface, and covers the bottom surface and the wall surfaces of the through holes; an insulating material layer is arranged from the top surface to the bottom surface, and covers the top surface and the wall surfaces of the through holes; and the metal material layer in the through holes is covered by the insulating material layer to realize the shielding function of the electrical connector and prevent terminals inserted into the through holes from being short-circuited with the metal material layer. Positioning structures are not required to be arranged on the bottom surface of the insulating body to partially shield the metal material layer together with stoppers; therefore, compared with the prior art, the invention solves the problem of difficulty in control over dimensional accuracy, and can eliminate the two steps of assembling the stoppers and removing the stoppers to further simplify a machining process and decrease production cost.

Disclosed in the present application is a shielding method and device for wireless signals. The method comprises: sending by a first network device a reselection signaling to a terminal which accesses a second network device of a public network in an area to be shielded, the reselection signaling being used for indicating the terminal to reselect and access the first network device, and the first network device being used for shielding wireless signals between the second network device and the terminal; receiving by the first network device an uplink signal sent by the terminal; and if the terminal is determined, according to the uplink signal, to support a first communication system, a first access instruction is sent to the terminal, the first access instruction being used for indicating the terminal to access a cell, supporting the first communication system, of the first network device. The method is used to solve the problem of large amounts of radiation in a conventional interference method.