36results about How to "Prevent narrowing" patented technology

A linear compressor is provided. The linear compressor may include a frame coupled to a cylinder, a gas hole defined in the frame, and a gas pocket that communicates with the gas hole and transfers a refrigerant gas to the cylinder.

The present invention relates to a ladder capable of height adjustment of a tray including: an outer support part; an inner support part provided to be extractable from the inside of the outer supportpart to an upper portion of the outer support part; an auxiliary support part arranged to face the outer support part while being spaced apart from the outer support part by a predetermined interval;a driving part receiving power from a rotating tool to lift or lower the inner support part; and a plurality of horizontal footholds provided on the outer support part, wherein the inner support partincludes: a support part providing a space on which a worker can step; and a tray arranged on an upper portion of the support part and providing a space on which work articles or tools can be placed.Therefore, the worker can stably perform work even on an inner support extracted from an outer support.

A sipe is formed in a block provided in a tread surface, wide portions extending in a sipe length direction are formed in each of a kick-out side and a step-in side of the sipe, and a total of heights of the wide portions in the kick-out side of the sipe is made larger than a total of heights of the wide portions in the step-in side of the sipe.

The present invention provides a stacked battery, which includes a pole plate group, a pressure frame, a tab and a casing. By wrapping the pressure frame outside the pole plate group, the pressure frame is connected as a whole through buckles, so that the use of the pressure frame to The pole plate group is installed as a whole to reduce the softening and peeling of the active material caused by shaking between the pole plates during the use of the pole plate group. The shell is installed outside the pressure frame to further realize that the battery can pass through the shell during the use of the battery. Insulate and block the outside world from causing damage to the pressure frame or the plate group; the plate group can be fixed through the pressure frame, so that the distance between the positive plate and the negative plate can be unified, and the positive plate and the negative plate can be avoided due to overheating. It often causes the conductive channel narrowing caused by the thickening of the electrode plate group, thereby realizing that each conductive channel in the electrode plate can ensure the effective utilization rate of the active material of the battery; and the service life of the battery can be improved.

A printed circuit board (50) includes a chip-shaped printed antenna (10) having an open end formed by at least two antenna conductors arranged separately from each other. As shown by a hatched portion, on the printed circuit board (50), a ground required by one or more other modules is arranged so as to surround a region around the printed antenna (10) excluding a certain region. Thus, on the printed circuit board (50), the radiation electric field does not become a dipole mode but is formed to discharge in one direction in a balloon shape as shown by a broken line.

The invention provides a water heater comprising: a container (20) equipped with a burner (3) with a downwardly facing combustion surface; a fan housing (10) containing primary air for combustion and fuel gas The fan (10a) that supplies the mixed gas to the burner; the annular gasket (6), which connects the first connection on the downstream end side of the first flow path (1) that forms the downstream side flow path of the fan casing (10) The end face (13) is connected in an airtight state with the second connecting end face (23) on the upstream end side of the second flow path (2) forming the upstream side flow path of the container (20); and the one-way valve (5), which It is installed near the upstream end in the second flow path (2).

The invention discloses a truss shearing mechanism of a triangular truss production line. The truss shearing mechanism of the triangular truss production line structurally comprises an upper shearing device and a lower shearing device. According to the upper shearing device, two upper shearing arms are hinged to an upper hinged shaft, upper scissors are installed at the corresponding ends of the upper shearing arms, the other end of each upper shearing arm is hinged to a crankshaft driving mechanism, and the crankshaft driving mechanism drives the two upper shearing arms to shear an upper spiral rib. The lower shearing device comprises two lower shearing arms, wherein the lower shearing arms are hinged to a first lower hinged shaft and a second lower hinged shaft respectively, lower scissors are installed at the corresponding ends of the lower shearing arms, the other ends of the lower shearing arms are hinged to the two sides of the crankshaft driving mechanism, and the crankshaft driving mechanism drives the two lower shearing arms to shear a lower spiral rib. The truss shearing mechanism of the triangular truss production line has the advantages that power is low, impact on a power grid is low, the structure is simple, and the cost is low; the phenomenon that the two pairs of scissors collide with each other is avoided, the service life is long, and the quality of a sheared truss is improved; a cut of the lower spiral rib is flat after the lower spiral rib is sheared, and the phenomenon that due to the fact that the width of the inner side of the triangular truss becomes narrower, the defect of deformation of the triangular truss is avoided.

A gate drive unit circuit, a gate drive circuit and a liquid crystal display apparatus. The gate drive unit circuit comprises a pull-up control module (1), a pull-up module (2), a holding control node generation module (3), a pull-up control node holding module (4) and an output node holding module (5), wherein the holding control node generation module (3) is used for generating, under the control of a forward scanning control signal (U2D) and a reverse scanning control signal (D2U), that are opposite each other in phase, a holding control signal to control a holding control node (netBn) of the current stage, so that after scanning signals are output during forward scanning and reverse scanning, the first signal pulse width of the holding control node (netBn) of the present stage is the same as the pre-set width. The first pulse width of a holding control node (netBn) can be prevented from being reduced, such that the pull-up control node holding module (4) can immediately carry out intermittent low-potential holding on a pull-up control node (netAn), thus improving the reliability of a circuit.

The invention provides a stator assembly and a motor with the stator assembly. The stator assembly includes a stator bracket and a stator core installed on the stator bracket, and the stator bracket includes a support shroud, formed between the support shroud of the stator bracket and the radial side surface of the stator core. There is a first axial airflow passage, and the stator assembly further includes an airflow conveying unit for supplying the first cold airflow to the first axial airflow passage, so that the cold airflow flows in the axial direction. According to the embodiment of the present invention, during the operation of the motor, a cold airflow can be introduced to the other side of the stator opposite to the air gap, so that both radial sides of the stator can be cooled at the same time, reducing the expansion and deformation of the stator core and preventing The air gap is narrowed, and at the same time, it prevents the stator from high-temperature baking of the magnetic poles, protects the magnetic poles, and prolongs the service life of the motor.