34results about How to "To achieve the purpose of limiting" patented technology

The invention discloses a diagnosis and treatment device for an otolaryngology department. The diagnosis and treatment device comprises a seat plate, the front and back sides of the left side of the seat plate are fixedly connected with base blocks, a shaft rod is rotatably connected between the two base blocks, the surface of the shaft rod is fixedly connected with a connecting block, a reset mechanism is arranged on the surface of the shaft rod, and the top of the connecting block is fixedly connected with a backrest. The diagnosis and treatment device solves the problem that during diagnosis and treatment of a patient in the otolaryngology department, the patient needs to sit on the diagnosis and treatment device, so that a doctor can diagnose and treat the patient. When the doctor diagnoses and treats the patient, the head of the patient is not limited well, in the process of diagnosis and treatment of the patient by the doctor, the head of the patient may turn around after keepinga posture for a long time, the diagnosis and treatment by the doctor can be affected, and inconvenience can be brought to the diagnosis and treatment. The diagnosis and treatment device for the otolaryngology department can ensure that the head of the patient cannot turn during diagnosis and treatment, and brings convenience to diagnosis and treatment by the doctor.

The invention relates to a pot cover and a pressure cooking utensil and relates to the technical field of cooking utensils. According to the main technical scheme, the pot cover is used for the cooking utensil and comprises an upper cover, a screw cap and a limiting mechanism, wherein the screw cap is arranged on the upper cover and is used for being fastened to a pot body of the cooking utensil in a rotating manner; the limiting mechanism limits the screw cap on the upper cover, and thus the screw cap cannot rotate relative to the upper cover; when the pot cover is fastened to the pot body of the cooking utensil, the screw cap is rotated, and the cooking utensil is located in a covered state; and after the cooking utensil is opened, the limiting mechanism limits the screw cap. The pressure cooking utensil comprises the pot cover. The pot cover is manly used for limiting the screw cap on the pot cover on the upper cover and preventing the screw cap from rotating relative to the upper cover after the pressure cooking utensil is opened, so that the phenomena of interference and collision of the screw cap and the pot body when the pressure cooking utensil is covered are avoided, and the pressure cooking utensil can be smoothly covered.

The invention provides an anti-loosening device and driving equipment. Among them, the anti-loosening device includes: at least two glands, any one of the at least two glands is provided with a mounting groove, and the mounting groove is used to locate the fastener that matches it; the bracket, at least two A gland is set on the bracket. At least two glands of the present invention are connected as a whole through brackets, at least two glands interact and cannot move relative to each other, so that when the anti-loosening device is assembled with the fastener, on the one hand, due to the installation of the gland The groove is adapted to one end of the fastener, so the fastener is limited by the structure of the installation groove and cannot be displaced relative to each other. On the other hand, since the position between at least two glands is relatively fixed, therefore, The fasteners assembled with the anti-loosening device cannot move relative to each other, thereby ensuring a good anti-loosening effect. At the same time, the structure is easy to assemble and disassemble, and can be used repeatedly, which improves the efficiency of assembly and disassembly.