4results about How to "Prevent hyperextension" patented technology

The present invention discloses an intelligent pillow system with multi-zone airbag adjustment. The present invention precisely senses the head position and sleeping posture through a high-density fiber pressure sensor array, and based on this information, drives an innovative "single air pump + multiple electronic control valves" and "integral airbag + partitioned air conduction" structure, achieving remarkable beneficial effects: First, by immediately triggering the overall descent protection when the head is tilted up / down, it can actively prevent hyperextension and hyperflexion of the cervical vertebra, effectively reducing the risk of neck pain and discomfort. Second, the sensor without protrusions embedded and the PWM smooth adjustment of the airbag ensure a comfortable experience; the system adopts a single power unit and logical partition design, greatly simplifying the air circuit, significantly reducing the hardware cost, power consumption, and the failure rate of easy leakage in multi-chambers, and improving the reliability. In addition, the interaction mode combining user-set instructions and automatic recognition takes into account both convenience and personalization, and the self-learning module enables the pillow to continuously adapt to the user's habits, achieving long-term precise personalized support.

This utility model discloses a geological hammer device for geological exploration, specifically relating to the field of geological exploration technology. It includes a hammer handle, a hammer head fixedly connected to one side of the handle, a flat-headed hammer body fixedly connected to the bottom of the hammer head, a slot on the inner side of the flat-headed hammer body, a retaining groove at the bottom of the flat-headed hammer body, and a replacement mechanism on the inner side of the flat-headed hammer body. The replacement mechanism includes three insert rods, the outer side of which inserts into the inner side of the slot, and a pointed tip fixedly connected to the bottom of each insert rod. This utility model allows for replacement of only the pointed tip when the tip of the flat-headed hammer body wears down, eliminating the need to replace the entire hammer, thus reducing long-term operating costs. Different hardness tips can be selected according to the rock material, achieving a balance between durability and functionality. Simultaneously, the telescopic hammer handle can be flexibly adjusted in length according to the user's height and arm length, avoiding bending over or excessive extension during operation, effectively reducing the risk of muscle strain, reducing the carrying volume, and improving the working efficiency, comfort, and environmental adaptability of the geological hammer.

This utility model relates to the field of electronic equipment technology, and in particular to a retractable cable storage device, comprising a first housing and a second housing. The first housing covers the second housing to form a receiving space, within which a first circuit board and a winding structure with a cable wound are disposed. The first housing and the second housing are detachably connected. The first circuit board is located between the winding structure and the inner surface of the first housing, and is detachably connected to the first housing. The first circuit board includes an input terminal. At least two through holes are provided on the first housing, with the through holes located along the edge of the side of the first housing facing away from the receiving space. The input terminal of the first circuit board is exposed through one of the through holes. This allows for adjustment of the position of the input terminal of the first circuit board by disassembling and reinstalling the first housing and the first circuit board, facilitating connection needs in different directions for users.

The utility model discloses an adjustable motorcycle frame, it includes main beam, the top of main beam is provided with the saddle, and one end fixed mounting of main beam has the outer tube, and the inside movable sleeve of outer tube has the inner tube, and the fixed mounting of fixed plate has outside outer tube. Through above -mentioned structure, the adjustable motorcycle frame of this technical scheme, the movable sleeve of inner tube in outer tube, cooperate three mounting round holes on outer tube, second spring, limit axle and steel ball, and a plurality of limit holes on inner tube, and the rider can according to own shoulder and arm stretch demand, press the limit ring and make the steel ball on limit axle separate from the limit hole of inner tube, can promote the inner tube to slide to the suitable height in the outer tube, and the steel ball is fixed in the corresponding limit hole under the action of second spring, and the handlebar height is adjusted easily, to avoid higher rider bending and riding or the height of shorter rider arm needs excessive stretching.