67results about How to "To achieve the purpose of self-locking" patented technology

The embodiment of the invention relates to a cavity filter, providing a screw device and a cavity filter which uses the screw device; the cavity filter is directly screwed into the cavity of the filter by a screw; the object of self-locking is achieved by changing the space of the thread; furthermore, as the nut is not required, the screw is tuned in the cavity and is self-locked; therefore, the cavity filter does not exceed the cavity and increases no thickness of the filter.

The invention discloses a self-locking bracket comprising bracket body having an archwire groove and a bracket opening, wherein two sides of the bracket opening are symmetrically provided with sliding grooves, insides of the sliding grooves are provided with vertical groove edges, a bracket cover is slidedly arranged in the sliding grooves, two sides of the bracket cover are provided with sliding strips cooperating with the sliding grooves, front ends of the sliding strips are provided with front wing hooks, a hollow groove and a lock groove in cooperation with the front wing hooks are respectively arranged at the groove edges of the sliding grooves at right side and left side of the archwire groove, a height of an entrance of the lock groove is smaller than a thickness of the front wing hooks, a height of the inside of the lock groove is greater than or equal to the thickness of the front wing hooks; when the bracket cover is open, the front wing hooks are hidden in the hollow groove and thus the archwire groove is exposed; and when the bracket cover is close, the front wing hooks enable the lock groove to be deformed when the front wing hooks pass through the entrance of the lock groove under external forces, so that after the front wing hooks are fully inserted into the lock groove, a purpose of self-locking by utilizing that the height of the entrance of the lock groove is smaller than the thickness of the front wing hooks can be achieved. The lock groove of the bracket is located in the bracket body, and can increase intensity of the bracket body and greatly shorten size of the bracket body.

The invention discloses a building outer wall body. The building outer wall body comprises a hollow base plate fixedly installed on a building outer wall face. More than one row of wall bricks are arranged on the outer side face of the hollow base plate at equal distance. Gap cavities are formed between every two rows of wall bricks. A locking and limiting mechanism is arranged in each gap cavityin a filling manner. The locking and limiting mechanisms are fixedly installed on the outer side face of the hollow base plate and used for compressing the wall bricks on the two sides. Each locking and limiting mechanism comprises a supporting bar. A moving bar is arranged at the outer side end of each supporting bar. Inserting grooves are formed in the two sides of each moving bar correspondingly. A limiting bar is arranged in each inserting groove. According to the building outer wall body, when a concrete sealing layer is broken, the moving bars are pushed out automatically, the limiting bars on the sides of the moving bars limit the wall bricks, and falling of the wall bricks can be prevented. By the adoption of less concrete materials, the hollow base plate is utilized for achievingstrong fixing of the wall bricks, and the hollow base plate can be utilized for improving the heat-preserving ability of a building body.

The invention discloses a general self-lock type insulating protection sleeve matched with quick-connection terminals, leading the quick-connection terminals to be easy to be inserted into and unlikely to get out of the protection sleeve. Stop parts for the terminals are arranged at the middle section of the insulating sleeve body of the protection sleeve; stop grooves for the terminals are respectively arranged at the front and the back sides of the face part of the stop parts for the terminals, while corresponding stop lug bosses for the terminals are formed at the front and the back sides of the inner wall of the face part of the stop part for the terminals; a terminal cavity is arranged between the stop grooves for the terminals and the entry holes of plugging sheets; a longitudinal guiding convex groove is arranged at the central part of the inner wall of the face part of the terminal cavity; drum-shaped side parts are arranged at both sides of the middle section of the insulating sleeve body of the protection sleeve. The general self-lock type insulating protection sleeve matched with quick-connection terminals is mainly applied to match with the 250 type quick-connection terminals of different specifications.

The present invention provides a motor with a retractable shaft extension, which comprises: a shaft body and a shaft extension: the shaft body is a hollow structure including a first inner cavity, the shaft extension can be inserted into the first inner cavity, and can be inserted in the first inner cavity. The inner cavity moves relative to the shaft body in the axial direction, and at least two snap-fit ​​positions in the axial direction can be formed between the shaft extension and the shaft body; or, the shaft extension is a hollow structure including a second inner cavity, and the shaft The body can be inserted into the second inner cavity and can move relative to the shaft extension in the axial direction in the second inner cavity, and at least two axially engaging positions can be formed between the shaft body and the shaft extension. According to the invention, the shaft extension length of the motor can be effectively adjusted according to the actual working conditions. When the motor workplace changes and the shaft extension length changes, there is no need to redesign a new motor scheme. To achieve the matching effect, enhance the versatility of the motor for various working conditions.