42results about How to "Avoid risk of loosening" patented technology

A milling apparatus has a housing, a drive shaft extending along and rotatable about an axis in the housing and an axially compressible and radially expansible washer stack on the front end of the drive shaft. A tool is held by the on the shaft. A bolt projects radially in a slot through the shaft and is limitedly axially displaceable in the shaft. An actuator element shiftable axially in the passage projects axially forward out of the drive shaft and is fixed in the bolt. A clamping assembly axially compresses and radially expands the stack so as to lock the tool to the drive shaft. A spring assembly is braced axially forward against the housing and axially rearward against the bolt. A piston axially displaceable on the drive shaft in the housing bears axially forward on the bolt.

The invention provides a wheel hub bracket assembly for a torsion beam. The wheel hub bracket assembly comprises a wheel hub bracket and a longitudinal arm component; the wheel hub bracket comprises a mounting plate for fixing a wheel hub assembly, two front mounting legs and two rear mounting legs; a first mounting hole is formed in each of the front mounting legs; a second mounting hole is formed in each of the rear mounting legs; the longitudinal arm component comprises a longitudinal arm, a front sleeve and a rear sleeve; the longitudinal arm is provided with a first through hole group and a second through hole group; the front sleeve penetrates through and is fixedly connected with the first through hole group; the rear sleeve penetrates through and is fixedly connected with the second through hole group; the two ends of the front sleeve are fixedly connected with the first mounting holes; the two ends of the rear sleeve are fixedly connected with the second mounting holes. In the wheel hub bracket assembly provided by the invention, as an angle of the wheel hub bracket relative to the longitudinal arm can be adjusted, the process of performing section milling on a wheel hub bracket gasket is omitted, the production cost is reduced, the time is shortened, and the risk of bolt loosening can also be avoided.

The invention discloses a flip type orthodontic bracket with a variable arch wire slot. The flip type orthodontic bracket comprises a bracket main body and a flip, wherein the bracket main body is provided with the arch wire slot and a limiting mechanism; the limiting mechanism comprises a driving component and a push plate, and the push plate is arranged in the arch wire slot; and the pivot partof the flip is in transmission connection with the driving component, and the driving component is in transmission connection with the push plate. According to the orthodontic bracket, due to the limiting mechanism, a cover body is used for driving the limiting mechanism to adjust the arch wire accommodating space of the arch wire slot, and when the cover body is closed, the limiting mechanism canbe used for reducing the arch wire accommodating space in the arch wire slot and reducing the clearance of the arch wire groove, so that precise expression of torque of an arch wire is ensured, and the orthodontic effect of the orthodontic bracket is enhanced; and when the cover body is opened, the arch wire accommodating space is restored to the original size by the arch wire slot, so that an enough space is provided for in and out of the arch wire.

The invention provides a contact plate fixing structure which comprises a body and a contact plate. An inserting groove is formed in the body, and the inserting groove prevents the contact plate from continuing to advance in the inserting direction of the contact plate after the contact plate is inserted into a certain position. A boss is formed on the contact plate, the boss is provide with an arc edge, an elastic clamping groove allowing the boss to be inserted into is formed in the position, corresponding to the boss, of the body, when the contact plate is inserted into the certain position in the inserting groove and cannot continue to advance by being limited by the inserting groove, the elastic clamping groove and the boss form an inverted buckling and locking structure so that the contact plate cannot move in the direction opposite to the inserting direction of the contact plate, the contact plate can be located in the inserting direction of the contact plate and in the direction opposite to the inserting direction of the contact plate through the inverted buckling and locking structure and the inserting groove, the situation that the contact plate is crept and is loosened in the direction opposite to the inserting direction due to interference fit after being used for a long time is avoided, the inverted buckling and locking structure is formed and does not need new parts, and production cost cannot be increased.

The invention provides a novel method for winding an antenna of a downhole instrument. The method for winding the antenna of the novel underground instrument has the following steps: S1. Material preparation: (1). Antenna housing body, antenna coil, skeleton and antenna fixed joint; S2. Process: (1) Drilling groove: drilling device through the antenna housing The main body of the antenna cover is drilled so that an antenna cover slot and a plurality of antenna slots are formed on the main body of the antenna cover, and the plurality of antenna slots are distributed in a circular array; (2) Drilling gaps: The skeleton is processed by equipment. , to open the toggle gap; (3) Fixed point: open an antenna fixed point on the skeleton. The new method for winding the antenna of the downhole instrument provided by the present invention can adapt to the harsh environment in the well, and is assembled on the main body of the antenna cover through high temperature heating, so that the firmness is higher, and the risk of loosening is avoided, thereby reducing the workload, Advantages of cost and probability of maintenance.

The invention relates to the field of automobile luggage racks, in particular to an automobile luggage rack convenient for fixing articles, including a supporting mechanism, a transmission mechanism, a clamping mechanism, a limit mechanism and a fixing mechanism; While reducing the wind resistance of the car while driving, it improves the aesthetics and practicality. Through the setting of the transmission mechanism, it can provide power for the four clamping mechanisms at the same time, saving operating time and improving installation efficiency. Through the clamping mechanism Reasonable setting of the clamping part improves the structural strength of the clamping part and avoids the risk of loosening. The setting of the limit mechanism avoids the risk of theft, thereby improving its safety in use. The setting of the fixing mechanism facilitates the The items are firmly fixed, avoiding the items from shaking and being damaged during driving, and improving the driving safety.

The invention discloses a wall-mounted air conditioner indoor unit easy to disassemble and wash. The wall-mounted air conditioner indoor unit easy to disassemble and wash relates to the technical field of air conditioners, and can avoid the risk that a lower cover shell gets loose since the lower cover shell is not fastened in place. The wall-mounted air conditioner indoor unit easy to disassembleand wash comprises a shell, wherein the shell comprises a front panel and the lower cover shell; the front panel and the lower cover shell can be overturned to open; a detachable moving base is arranged in the shell; a fan is arranged on the moving base; a locking structure is arranged between the moving base and the lower cover shell, and comprises a rotary knob rotatably connected to an outer surface of the lower cover shell and a connecting lug arranged on the moving base; a clamping structure penetrating through the lower cover shell is arranged on a back surface of the rotary knob; the rotary knob can rotate between a locking position and an unlocking position; and a rotary plane of the rotary knob is perpendicular to a closing direction of the lower cover shell. The wall-mounted airconditioner indoor unit easy to disassemble and wash provided by the invention can be applied to an air conditioner easy to disassemble and wash.

The invention discloses a cable joint connecting structure and a connecting method. The disadvantages that a cable joint and a cable conductor are inconvenient for connecting operation, the connectionreliability is bad, and the loose risk is existent are solved. The connecting structure comprises the joint body and the cable conductor; a large-diameter cylinder, a small-diameter cylinder and lugplates are arranged on the joint body; a soldering frame is arranged in the small-diameter cylinder, the soldering frame comprises a base, a plurality of support strips connected to the base; a plurality of axially arranged slots are correspondingly arranged on the inner wall of the small-diameter cylinder and the support strips one by one; the support strips are inserted into the slots in an adapting manner; a plurality of small-diameter soldering slots communicating with the slots are arranged on the outer wall of the small-diameter cylinder, and small-diameter soldering blocks are arrangedin the small-diameter soldering slots; a plurality of inward arched clamping shrapnel is uniformly arranged on the inner wall of the large-diameter cylinder, one end of each inward arched clamping shrapnel is tightly connected with the inner wall of the large-diameter cylinder, the other end movably fits with the inner wall of the large-diameter cylinder; the plurality of large-diameter solderingslots are arranged on an outer wall of the large-diameter cylinder, the large-diameter soldering blocks are arranged in the large-diameter soldering slots, and the cable conductors are inserted into the large-diameter cylinder and the small-diameter cylinder.