51results about How to "Small locking force" patented technology

The invention discloses a bottom power taking self-locking electric bus battery box system capable of quickly changing a battery. The system comprises a battery box (1), a tray (2) used for bearing the battery box and arranged on an electric bus, mobile equipment (4) for conveying the battery box, and a grabbing device (5) arranged on the mobile equipment; and a battery box locking and unlocking device (3) is arranged on the tray. Through the system, automatic assembly of the battery box in the electric bus battery box system is realized, and the problems of over positioning, deformation of power wire connection pegs, breakage, arc discharge, welding, difficulty in automatically realizing unlocking due to impact of the battery box to a bolt of a locking mechanism in jolt and deformation of the battery box due to impact in jolt. The system is reasonable, reliable, simple and compact in structure, and can full-automatically, quickly and conveniently realize quick change of the power battery.

The invention provides a sliding bottom electricity-taking and self-locking electric bus battery quick-change pellet device. The electric bus battery quick-change tray device comprises a pellet and a locking and unlocking mechanism (3) mounted on the pellet. According to the invention, the battery box can be correctly positioned and reliably locked reasonably; the force is reasonably applied to the battery box; simple structure and simple and reasonable power wire splicing mode are obtained; and the arc discharge phenomenon can be effectively prevented.

The invention aims to provide an optional-position lockable hydraulic cylinder which comprises a cylinder body, a locking box body, a piston rod, a locking lever, a turning block and a lock claw. A front cover is fixed at the front end of the cylinder body, a rear cover is fixed at the rear end of the cylinder body, the locking box body is fixed on the rear cover, one end of the locking box body is fixed with a box cover, a piston is arranged in the cylinder body, a first oil mouth and a second oil mouth are respectively formed in the front end and the rear end of the cylinder body, one end of the piston rod is disposed in the piston, the left portion of the locking lever is located in the locking box body, the right end portion of the locking lever penetrates the rear cover to be disposed in the piston, the turning block provided with a cavity is disposed on the upper left portion of the locking lever, and a multihead trapezoidal thread of the turning block is arranged at the position of the cavity of the turning block and is engaged with a multihead trapezoidal thread of the locking lever. The optional-positional lockable hydraulic cylinder is simple and reliable in structure and especially suitable for being applied to occasions when the piston rod needs to stay in a certain position and bears larger pushing and pulling force.

The invention provides a method for improving rigidity of drawing parts. Plate materials are subjected to drawing forming by means of a drawing die, dual drawing beads are arranged on the drawing die, a drawing bead which is close to a parting line is a first drawing bead, a drawing bead which is far from the parting line is a second drawing bead, a center distance L between the two drawing beads is 30mm to 50mm, the distance between the first drawing bead and the parting line L2 ranges from 15mm to 25mm, the size L3 of a plane portion between the two drawing beads is larger than 10mm, a plane between a die-entrance R angle of an upper die and the first drawing bead is an upper die management plane, the size of the upper die management plane is larger than 5mm, the drawing height of the drawing die is H3, and the drawing angle of the drawing die is A. according to the method for improving rigidity of the drawing parts, during drawing of the parts, different locking forces are achieved in different phases, and the condition that the parts have large locking forces during drawing so as to enable the plate materials to produce large deformations is guaranteed; during a late drawing phase, locking forces are reduced, feeding is easily performed, and the parts are not fractured, so that drawing rigidity of the pars is guaranteed in a maximum degree mode.

The invention relates to the technical field of low-voltage electric appliances, in particular to a wiring frame structure, a wiring terminal and a low-voltage electric appliance. The wiring frame structure comprises a wiring frame, the wiring frame is a frame body structure which is enclosed by a top edge, two side edges and a bottom edge and is internally provided with a wiring cavity for a wire to pass through and be fixed; the wiring frame structure also comprises at least one avoiding structure arranged on the inner wall of at least one side edge and sinks away from the wiring cavity, and the avoiding structure is suitable for providing an avoiding space for expansion of the wire when the wire fixed in the wiring cavity is electrified and heated. Through the arrangement of the avoiding structure, when the wire is heated to expand, the wire can be extruded into the avoiding structure, attenuation of locking force is reduced, meanwhile, the contact area of the wire and the wiring board is increased, contact resistance is reduced, temperature rise at the wiring position of a product can be reduced. The problem of over-high temperature rise caused by easy loosening of wires of an existing wiring frame structure due to thermal expansion is solved.

The invention discloses a protection mechanism of a horizontal injection molding machine. The protection mechanism comprises a hinge base, a labor saving lever and a horizontal plate. The hinge base is fixed to a fixed die. The position of the pivot of the labor saving lever is hinged to the hinge base through a rotating shaft. The horizontal plate and a machine tool moving door are fixed. The front end, close to the labor saving lever, of the horizontal plate is bent upwards to form an inclined face. When the machine tool moving door is closed, the machine tool moving door drives the inclined face of the horizontal plate to abut against a force exertion point on a power arm of the labor saving lever and drives the power arm to be overturned downwards. The fixed die is provided with an open slot communicated with a positioning hole of the fixed die. When the power arm overturns downwards to the limiting position, a resistance arm of the labor saving lever and the projection of the positioning hole in the plane where any cross section of the positioning hole is located do not intersect. According to the protection mechanism of the horizontal injection molding machine, assembly of a movable die and the fixed die of the injection molding machine is automatically limited when an operator opens the machine tool moving door, and the accident of risking personal safety of the operator is avoided.

The invention provides a door body self-lock device and a refrigerator. The door body self-lock device is used for the refrigerator, and a door body and a case body of the refrigerator are connected with each other through a hinge; the door body self-lock device comprises the hinge and a lock catch, wherein a locking pin and a spring which is always in a tensional state are installed on the hinge, the first end of the locking pin is rotatably connected with the hinge, the second end of the locking pin is provided with a first connecting portion, the first end of the spring is connected with the hinge, the second end of the spring is connected with the position, except the first end of the locking pin, of the locking pin, the spring can drive the locking pin to rotate, the hinge is provided with a limiting block used for limiting rotation angles of the locking pin, the lock catch is fixedly installed on the door body and provided with a second connecting portion, and the second connecting portion can be matched with the first connecting portion. The connection position of the first end of the spring and the hinge is located beyond the area through which the orthographic projection of the locking pin passes on the hinge along with rotation of the locking pin. Accordingly, by means of the technical scheme, it can be guaranteed that the refrigerator has a good thermal insulating property, and assisting force can be provided for a user when the door body is opened and closed.

The invention discloses a step height locking device and a self-balancing handlebar rod with a height step adjustment function. The step height locking device comprises a locking seat, a ball, a transmission block and a cam handle. A cam portion of the cam handle is hinged to the wall of a containing groove, the transmission block is located between the bottom face of the groove and the cam portion, the transmission block slides towards a mounting through hole under the action of the cam portion of the cam handle, and then the ball is pushed to protrude into the mounting through hole. An output end opening of a second handlebar rod body of the self-balancing handlebar rod with the height step adjustment function is sleeved with the locking seat, the ball directly abuts against the peripheral side face of a first handlebar rod body through a gap, and a gear counter bore is formed in the peripheral side face of the first handlebar rod. The step height locking device and the self-balancing handlebar rod with the height step adjustment function are convenient to use, good in locking effect and long in service life, a user can carry out unlocking and locking operations through the cam handle, the damage degree of the ball is greatly reduced, and meanwhile the reliability of the linkage process is improved.

The invention discloses a hole sealing door device which includes a hole sealing door, a first locking mechanism and a first sealing mechanism. The area of the hole sealing door is larger than the hole area, the hole sealing door includes a hole sealing door plate and a hole sealing door bottom plate, the first locking mechanism comprises first front face locking units and first back face lockingunits, the first front face locking units are used for locking the hole sealing door plate and a wall from the front face of the hole sealing door, and the first back face locking units are used for locking the hole sealing door plate and the wall from the back side of the hole sealing door; and the first sealing mechanism comprises first hole sealing gaskets which are arranged between the hole sealing door plate and the wall and between the hole sealing door plate and the hole bottom. Correspondingly, a transportation method is also provided. The problems that the size of a sealing door in the prior art is small, if the sealing door needs to adapt to a large-sized door hole, the structure is complicated, the construction period is long, and it is difficult to ensure the sealing performance and safety are solved.

The invention relates to a parking brake unit and an electromechanical brake clamp, and the parking brake unit comprises a cylinder assembly which is internally provided with a cavity with a hole; an energy storage assembly which is located in the cavity and comprises a disc spring cylinder body fixed to the cylinder assembly; a disc spring sleeve sleeved in the disc spring cylinder body; a disc spring assembly I located in the disc spring sleeve; a guide piece positioned in the disc spring assembly I and fixedly arranged at the end part of the disc spring cylinder body; a supporting piece located in the cavity and arranged with the disc spring sleeve in a spaced mode; a disc spring assembly II located in the cavity and arranged between the supporting piece and the cylinder body assembly; a wedge-shaped piece, wherein one end, close to the bearing slope, of the wedge-shaped piece is connected with the disc spring sleeve, and the other end penetrates through the disc spring assembly II to be connected with the supporting piece; a thrust output control unit connected with the disc spring cylinder body; and a locking assembly located between the disc spring cylinder body and the disc spring sleeve. The parking brake unit is compact in structure, high in energy storage efficiency, small in axial size and light in weight, and energy is generated by elastic potential energy of the disc spring set.

The invention relates to a bicycle handle folding mechanism which is simple in structure, easy to unfold and lock and firm in locking. The bicycle handle folding mechanism comprises a handle seat, a left handle rod, a right handle rod and a locking mechanism. The handle seat is composed of a connecting base capable of being connected with a bicycle stand pipe, an upper extending plate and a lowerextending plate. The handle rod is provided with an open arc-shaped groove; when the handle is unfolded, the handle ends of the handle rods rotate and are unfolded towards the two sides respectively,a connecting rod of the locking mechanism is clamped into the open arc-shaped grooves in the other ends of the left handle rod and the right handle rod, and the other ends of the left handle rod and the right handle rod are located between the upper extending plate and the lower extending plate in an up-down overlapped mode. According to the handle folding mechanism, the left handle and right handle overlapping locking technology is adopted, and the effects that after the bicycle folding handle is unfolded, a locking operation is easy and firm, and the handle is not loosened are achieved.

The invention provides a screw destructive torque measuring device and measuring method. The screw destructive torque measuring device includes: a pedestal, two parallel sides of an upper surface of the pedestal being provided with mutually symmetrical clamping grooves; a pedestal sliding block inserted in the pedestal clamping grooves; a rotating mechanism which is mounted on the pedestal and includes a first lead screw, a first lead screw nut, a first gear, a second lead screw, a second lead screw nut, a second gear, a rotary handle and a third gear; and a clamp module is arranged between the pedestal sliding block and the pedestal and includes a first screw clamp and a second screw clamp whose side edges are provided with grooves respectively, and the grooves being matched and jointly forming a cylindrical groove. The device can rapidly and accurately measure a numerical value of destructive torque of a screw, and can perform measurement circularly, thereby saving resources, and greatly satisfying a requirement of an enterprise for rapidly measuring the numerical value of destructive torque.

The invention relates to a self-locking bolt assembly. The self-locking bolt assembly comprises a bolt with a conical nest hole, an expansion block and a cover-shaped nut, wherein the bolt, the expansion block and the cover-shaped nut are easy to machine, the mechanical strength of the bolt is not affected, mounting and dismounting are easy, the tension borne by the bolt is reduced while the boltand the cover-shaped nut are locked, and the load bearing capacity of the bolt is improved.