3results about How to "Avoid irregular deformation" patented technology

The utility model provides a detection valve, which comprises: a valve body, the inner wall of its pipe body forms a support wall and a bent sealing wall; a valve core, which includes a valve rod received in the pipe body, a connecting wall formed at the bottom end of the valve rod, and a flanging bent upward from the connecting wall; the valve rod, the connecting wall and the flanging jointly enclose a sealing groove; a valve rod latch, sleeved on the top end of the valve rod, enabling the first support step to be clamped in the clamping groove, and forming a sliding connection with the pipe body, a first channel is arranged between the valve rod latch and the pipe body; the connecting wall and the flanging are both located below the support wall, and the sealing wall extends into the sealing groove, a second channel is arranged between the sealing wall and the valve rod; a spring, the two ends of which respectively abut against the second support step and the support wall; a sealing ring, installed in the sealing groove and matching the size of the sealing groove, when the valve core is in a reset state, the sealing wall presses against the upper end face of the sealing ring. Compared with the related technology, the detection valve of the utility model has a long service life and stable sealing performance.

This utility model provides a one-way valve for testing, comprising: a valve body, which includes a pipe body and a retaining wall inside the pipe body; the retaining wall includes a spaced top wall and a bottom wall, and a side wall connecting the top wall and the bottom wall; the side wall includes a first annular wall, a first transition annular wall, and a second annular wall from top to bottom, with the inner diameter gradually increasing; a valve core, which has a connecting wall at its bottom end, a sealing groove on the outer periphery of the connecting wall, a frustum-shaped top surface that abuts against the first transition annular wall and forms a sliding connection, and the outer surface of the connecting wall abuts against the second annular wall and forms a sliding connection; a valve stem latch, which is fitted onto the top end of the valve stem to form a snap-fit ​​interference fit and a sliding connection with the pipe body; a spring, which is fitted onto the valve stem and abuts against the locking body and the retaining wall at both ends; and a sealing ring, which is installed in the sealing groove and whose size matches the size of the sealing groove, and abuts against the second annular wall to form a sealing sliding connection. Compared with related technologies, the one-way valve for testing of this utility model has stable sealing performance and a long service life.

This utility model discloses a fixture for fixing the curvature of a nylon thread and the center position of a voice coil, comprising: multiple sets of fixing posts, all mounted on the top of a fixing plate; and a slot formed at the upper end of the fixing posts for bending the nylon thread into an arc shape. This utility model, through the design of the arc-shaped positioning block, fixing posts, and arc-shaped slot, uses the arc-shaped positioning block to position the center of the voice coil when it is placed on the block, preventing center displacement. Furthermore, the fixing posts and arc-shaped slot work together to bend the nylon thread into an arc shape by placing it within the arc-shaped slot, standardizing the curvature of the nylon thread and avoiding irregular deformation and inconsistent curvature. The synergistic effect of the arc-shaped positioning block, fixing posts, and arc-shaped slot improves the stability of the product's sound quality and increases the yield rate.