48results about How to "Strong fastening force" patented technology

To provide a steering device for tilt and telescopic adjustments in which the locked condition can be made stronger, and when unlocked, tilt and telescopic adjustment can be smoothly carried out.A steering device, comprising: a fixed bracket having fixed side parts on both sides in the width direction; a movable bracket arranged between the fixed side parts; a friction plate fixed and oppositely arranged with a suitable gap with respect to at least one of the two fixed side parts of the fixed bracket; and a friction washer that is inserted between the fixed side part and the friction plate. A lock bolt passes through for connecting the fixed bracket, the movable bracket, the friction plate, and the friction washer to be freely locked and unlocked.

In a fastening tool in which fastening members may be inclined as they are threadedly inserted together whereby almost no displacement load is applied to the members, a member having a bolt through hole with a tapered seat surface, and a fastening bolt that includes a bolt body provided about its outer periphery with a male thread, and a head provided on an end of the bolt body that has a diameter greater than that of the bolt body, in which the head has a lower outwardly curved tapered surface whose diameter is reduced toward the bolt body so that the lower surface abuts against the tapered seat surface when the fastening tool is used.

A screw member having a loosening prevention function is provided to improve a fastening power and a relative strength in thread connection. With an arrangement to provide a first crest portion and a second crest portion at the opposite ends of a thread point, a first screw member generates a loosening prevention effect due to elastic deformation of the first crest portion and the second crest portion, with the entire thread flank from the base portion to the point brought into contact with a second screw member on the both surfaces of the thread flanks. With this arrangement, a strong fastening power can be obtained, and a clamping force applied to the thread is distributed over the thread, thereby enabling improvement in the relative strength in thread connection.

The invention discloses a fixing device which comprises a main body and a converging unit. The main body comprises a channel; the converging unit is arranged on the main body, and comprises a tension part and a regulating part; the tension part comprises a first end part, a surrounding part and a second end part; the first end part is connected with the main body; one end of the surrounding part is connected with the first end part; the second end part is connected with the other end of the surrounding part; and the second end part penetrates into the channel, and forms a locking space along with the first end part, the main body and the surrounding part in a surrounding mode. The regulating part is arranged on the main body and is coupled with the tension part to regulate the size of the locking space; and the regulating part rotates around the axis relative to the main body, and the axis passes through the main body, but does not pass through the locking space. According to the fixing device disclosed by the invention, the tension part is regulated by the regulating part, so that the size of the locking space can be quickly and conveniently regulated to achieve use convenience.

The invention discloses a freezing fixation flexible clamp used for numerical control cutting machining of a thin-walled part. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part comprises a clamping mechanism and a longitudinal positioning mechanism, wherein after the clamping mechanism clamps the thin-walled part, the thin-walled part is positioned on a lathe. The longitudinal positioning mechanism is arranged below the thin-walled part on the lathe and is wholly a container containing phase change material, a vertical support is arranged on the upper surface of the phase change material in a floating mode, and a cooling passage is designed between two opposite lateral walls in the container. Therefore, after the clamping mechanism clamps the thin-walled part, the bottom surface of the thin-walled part contacts the support and applies pressure on the support in the process of contacting, and the support is sunk. At present, cooling gas is injected into the cooling passage through a vortex tube to enable the phase change material to be converted into a solid state, the support is frozen and fixed, and longitudinal positioning of the thin-walled part is achieved. The freezing fixation flexible clamp used for the numerical control cutting machining of the thin-walled part has the advantages of being obvious in effect, convenient to achieve, low in cost, and free of pollution to the environment, and effectively improving efficiency and machining quality in the process of numerical control cutting machining of a weak-rigidity process system.

PROBLEM TO BE SOLVED: To perform insertion and attachment of a pressing cylinder to a hose and assembly to a connection cylindrical body in separate processes by separating them from each other.

A method for fixing bone in orthopaedic repair operation includes such steps as primary location of fractured bone at the fixing position, installing the fixing nails, deforming the end of said nails for fixing it at the internal side of bone, and using the nail cap to connect the bone to the fixing plate. Said nail features that the deformation at its end is controllable.

The invention discloses a fixing device, which comprises a main body and a converging unit. The main body includes a channel, the converging unit is arranged on the main body and includes a tension member and an adjustment member, the tension member includes a first end, a surrounding portion and a second end, the first end is connected to the main body, and one end of the surrounding portion is connected to the first end , the second end is connected to the other end of the surrounding part, and the second end penetrates into the channel and surrounds with the first end, the main body and the surrounding part to form a locking space. The adjusting member is arranged on the main body and coupled with the tension member to adjust the size of the locking space. The adjusting member rotates around an axis relative to the main body, wherein the axis passes through the main body but does not pass through the locking space. Thereby, the fixing device of the present invention can quickly and conveniently adjust the size of the locking space by adjusting the tension member through the adjusting member, so as to achieve the convenience of use.

A pushing and expanding drawing type elastic fixed connector comprises a screw head, an expanding sleeve and a tight expanding bolt; and the tight expanding bolt is installed behind an installing channel of the expanding sleeve, the screw head is connected with the connecting end of the tight expanding bolt, and therefore the tight expanding bolt can be kept in the installing channel. By means of the simple pushing and pulling action, the pushing and expanding drawing type elastic fixed connector makes a connecting object and a connected object fast and conveniently connected and separated, so that operation is convenient. The pushing and expanding drawing type elastic fixed connector is simple and compact in structure; no gap exists between connecting pieces; the sliding phenomenon is avoided after installation; the fastening force is high; machining is easy; and the pushing and expanding drawing type elastic fixed connector can be repeatedly used, and therefore the pushing and expanding drawing type elastic fixed connector has better economical performance.

The invention provides a passive compliance device, which includes two connecting parts and a compliance part; the compliance part is arranged between the two connection parts, the compliance part is a flexible material structure, and the compliance part is used for The passive compliance device performs self-adaptive compliance when it is stressed, the connecting part is used to fix the compliance part, the side of the connection part away from the compliance part is used to connect an external device, and the connection part is used to transmit the compliance The compliance effect of the component, the passive compliance device can passively comply with the contact of the robot adjustment end.