2results about How to "Improve user-friendliness" patented technology

The utility model relates to pen formula injection device technical field, concretely is a kind of dose setting and correction structure and injection device, dose setting and correction structure include: shell and dose setting ring, the double-direction ratchet wheel engagement tooth slot of being provided on the inner wall of shell one end, multiple curved arms are provided on dose setting ring, double-direction ratchet wheel tooth is provided on curved arm;Double-direction ratchet wheel tooth and double-direction ratchet wheel engagement tooth slot engage;When dose setting ring rotates one unit cell in time, double-direction ratchet wheel tooth is separated from current double-direction ratchet wheel engagement tooth slot, enters next double-direction ratchet wheel engagement tooth slot and is engaged, completes the setting of one unit cell dose;When dose setting ring rotates one unit cell in reverse, double-direction ratchet wheel tooth is separated from current double-direction ratchet wheel engagement tooth slot, retreats to last double-direction ratchet wheel engagement tooth slot and is engaged, completes the correction of one unit cell dose.The utility model can realize correction under dose setting error condition, improve injection accuracy, improve the use friendliness of injection device.

Hydraulic jacks are widely used in automotive repair and maintenance, equipment lifting, and outdoor emergency situations. Traditional manual push-button jacks are labor-intensive to operate. To address this, the industry has developed several wirelessly controlled electric-driven jack devices. This application integrates the lifting transmission structure and the cam-driven pressure relief structure onto the same reduction output shaft. The forward and reverse rotation of the motor achieves lifting and automatic pressure relief respectively, eliminating the need for additional electronically controlled pressure relief components. The overall structure is more compact and simpler, resulting in lower assembly costs. Furthermore, it eliminates the need for manual operation of the pressure relief valve, allowing operators to work without being close to the load-bearing area, effectively avoiding on-site operational safety hazards.