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.

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.

The present invention relates to a screw configured to have improved anti-shock, anti-vibration, and fastening ability, and particularly, to screw technology that: forms an angle of a leading flank surface constituting the inclined plane of a screw thread in an entry direction to be less than an angle of a trailing flank surface constituting the inclined plane of the screw thread in an exit direction, with respect to the center of the screw thread; and has the trailing flank surface provided as a single stage flat portion formed horizontally within a sloped section, to enlarge the contacting surface area between the screw and a female screw correspondingly coupled to the screw. Thus, upward, downward, left and right vibration of a screw caused by external impacts can be prevented so as to avert autonomous disengagement of the screw, and effectively prevent a reduction of disengaging torque arising from repeated use.

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.

The invention relates a pipeline anti-damage hose clamp with high fastening forces, which comprises a strap and is characterized by further comprising a connecting bracket, a retreat preventing baffle group, rivets and a screwing rod, wherein the connecting bracket is fixedly arranged on the fixed end of the strap; a screwing rod installation hole is formed in the head of the connecting bracket; rivet installation holes are formed in the tail of the connecting bracket; the screwing rod is arranged in the screwing rod installation hole in the connecting bracket; a penetrating seam for a free end of the strap is axially formed in the body of the screwing rod; a meshing fluted disc is arranged on the body of the screwing rod; the retreat preventing baffle group is arranged on the rivet installation holes in the connecting bracket through the rivets; and the retreat preventing baffle group is provided with meshing teeth which are engaged with the meshing fluted disc of the screwing rod. The hose clamp has the advantages of being scientific and reasonable in structure design, high in fastening force, quakeproof, capable of preventing pipeline damage, easy in disassembly, difficult in fracture, long in service life and convenient in use, and is a highly innovative hose clamp.

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.

The invention discloses a hub motor for an electric vehicle, which comprises a stator, a rotor and a connecting shaft, wherein the stator comprises an iron core and a bracket, the iron core is fixed on the bracket and is formed by laminating stator sheets in a spiral winding manner, and the notch width of a tooth socket, the outer diameter of the iron core, the thickness of the tooth lip of the iron core, the inner diameter of the iron core, the thickness of the yoke part of the iron core, the number of the tooth sockets of the iron core and the notch width of the stator sheet meet the following relation: the notch width of the tooth socket = pi x [the outer diameter of the iron core - 2 x the thickness of the tooth lip of the iron core - 2 x alpha x (the inner diameter of the iron core +the thickness of the yoke part of the iron core)] / the number of the tooth sockets of the iron core + the notch width of the stator sheet, wherein the value scope of alpha is 0.45~0.55, and the notch width value scope of the stator piece is 0~2 mm. The hub motor for the electric vehicle has the advantages that: the stator structure optimizes the tooth socket structure of the motor, improves the power density and the working efficiency of the motor, enhances the short-time overload capacity of the motor, reduces the temperature rise and the manufacturing cost of the motor, and prolongs the service life.

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.

The invention discloses double oil tanks and an integrated double oil tank and urea tank assembly, and belongs to the field of automobile parts. The double-oil-tank assembly comprises an oil tank shell, the oil tank shell defines a cavity, and the oil tank shell comprises an upper shell area on the upper portion, a middle shell area in the middle and a lower shell area on the lower portion; a middle grid rib structure is arranged in an area, corresponding to the height of the middle shell, in the cavity, the middle part of the cavity is divided into a plurality of middle grid cavities by the middle grid rib structure, the middle grid cavities are not communicated in the radial direction, the middle grid rib structure comprises a first middle grid cavity group and a second middle grid cavity group which are not communicated with each other, the bottom end of the first middle grid cavity group is provided with a first oil passing opening so as to be communicated with each other to form a first fuel oil cavity, the bottom end of the second middle grid cavity group is provided with a second oil passing opening so as to be communicated with each other to form a second fuel oil cavity, and the first fuel oil cavity and the second fuel oil cavity are connected through a conversion valve.

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.