An internal embrace type manual window opener

Abstract

The invention discloses an inner holding type manual window opener. The inner holding type manual window opener comprises a mounting seat, an end cover, a transmission mechanism, a push-and-pull arm assembly and a handle, wherein the mounting seat is fixedly connected with the end cover; the transmission mechanism is mounted in an accommodating space defined by the mounting seat and the end cover cooperatively; the transmission mechanism comprises a first linkage piece and a second linkage piece; the push-and-pull arm assembly is fixedly connected with the second linkage piece; a cylinder extends in an end surface of the end cover adjacent to the mounting seat; a connecting part is arranged on the handle, and penetrates through the cylinder to be in cooperated connection with the first linkage piece; the handle drives the first linkage piece to rotate through the connecting part; the second linkage piece movably sleeves the cylinder; the second linkage piece and the first linkage piece are in transmission cooperation with each other; a torsional spring for limiting the rotation of the second linkage piece sleeves the cylinder; bent feet at the two ends of the torsional spring are matched with the second linkage piece in a propped manner. The window opener is simple and reasonable in structure arrangement, easy to process, convenient to assemble and operate, lower in manufacturing cost and longer in service life.

Description

technical field [0001] The invention relates to the technical field of window opening devices, in particular to an internally embraced manual window opener. Background technique [0002] The device used to open and close windows is called a window opener. Window openers are common in daily life, for example, the opening and closing of shutters usually requires the help of window openers. Chinese patent (authorized announcement is CN2519844Y) discloses a hand-operated window opener, its structure includes a base, an upper cover, a transmission mechanism and a crank handle, one side of the base is provided with an inclined groove, and the upper cover is covered on the base. The inner surface of the upper cover is provided with oblique holes corresponding to the inclined grooves of the base, and a pair of shaft seats are arranged between the base and the upper cover. The transmission mechanism includes a worm wheel, a worm screw, a push-pull arm and a connecting shaft. There ...

AI Technical Summary

Problems solved by technology

[0003] This manual window opener has the advantages of labor-saving, flexible, and reliable locking, but it has the following defects at the same time: first, due to the use of worm gear and worm drive, the production cost is high and the assembly is relatively inconvenient; second, the worm gear, The worm requires high precision during processing, otherwise it is easy to get stuck during use; thirdly, the handle needs to be rotated multiple times during operation, resulting in time-consuming and inconvenient operation

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