32results about How to "Guaranteed fastening force" patented technology

A fuel cell stack assembly method comprises the following steps: fixing an external locating tool for stack assembly on a pressure applying device, sequentially putting stack components into the external locating tool and piling up the stack components, enabling the pressure applying device to apply pressure to the piled stack components in the external locating tool to the set pressure value, respectively fastening integrated packaging side plates at the periphery of a stack for packaging at the pressure value, removing the pressure of the pressure applying device and the external locating tool, taking out the packaged stack, and completing the assembly. The fuel cell stack assembly method has the benefits that the fuel cell stack requiring large assembly force can be assembled only through simple operation, so that the assembly efficiency of the fuel cell stack is remarkably improved; external locating guarantees the alignment of the fuel cell stack components so as to be good for guaranteeing the quality of the stack; the packaging plates at the periphery of the stack does not deform easily when bearing the assembly force of the stack, so as to be good for guaranteeing the composite design value of the fastening force after the assembly of the stack, and the assembly force is applied at the periphery of the stack by the packaging plate compared with a screw or a bundling belt, the assembly force is better uniformly distributed.

The invention discloses a self-propelled peeping probe adapted to different diameters of drill holes and a peeping method thereof. The probe comprises a peeping probe body, a camera, walking wheels, rocker arms connected to the walking wheels, and an operating host. The rock arms can achieve a certain angle of damping opening and closing under the effects of internal torsion springs and gas springs and have alarm functions, and the rocker arms can be fixed in grooves of a peeping probe side through locking holes and locking blocks. The self-propelled function of the peeping probe in a drill hole can be achieved through an internal power supply, a driving motor, a video processing module, a control module, a WIFI module and the external operating host. The peeping probe has the advantages of centered drill hole, self-propelling and less workers in operation in a drilling peeping operation process, the complexity in a conventional drilling peeping operation is reduced, a push rod and a video transmission line are removed, auxiliary accessories are greatly reduced, and a new solution is provided for determining the fracture of a rock mass through drilling peeping in underground engineering.

A container connector having cones at upper and lower parts of a shaft of the connector. The lower cone can be detached from an upper corner casting of a lower container or a socket on a deck board without manually rotating the lower cone. The construction enhances workability of load discharging and provides sufficient fastening force required in different situations. To achieve the above, the lower cone has a rotation engagement structure and a non-rotatable second engagement structure. The rotation engagement structure allows the lower cone to engage with an inner edge of an engagement hole when the lower cone is in inserted into the upper corner casting or the socket and rotated from a disengagement position to an engagement position. The second engagement structure allows a projection-like engagement section, which is arranged on a side face of the lower cone, to engage with the inner edge of the engagement hole even if the lower cone is not rotated when it is inserted into the upper corner casting or the socket.

This invention provides a bolt difficult to be loosened, and capable of maintaining a stable tightening force over a long period. The bolt 1 includes a shaft 10 having a male screw 11 in a front end side thereof, a head 20 attached on a base end side of the shaft 10 such that it is slidable on the shaft 10 in an axial direction and rotatable integrally with the shaft 10, and having teeth 211 on a seating surface 210 thereof, a spring 30 pressing and biasing the head 20 toward a tightened member P, and a detent base 60 fixed on the tightened member P and having a plurality of teeth 611, wherein the teeth 211 of the seating surface 210 of the head are pressed against and engaged with the teeth 611 of the detent base 60, so as to stop rotation of the shaft 10.

The invention provides a handle for pipes, wherein an operation part can be easily stopped at any radial position, the operation force of the operation part can be in fine adjustment, and the ageing of fastening force is little changed once the fastening force is set. The handle for pipes has: a handle body (24); an button for operation (22) having a medial axle part (28) moved along the axial direction and freely installed in the axle hole of the handle body (24); a front end cover (44) positioned at the periphery of the medial axle part (28), freely moved along the axial direction, and rotationally bolt-jointed with the far end of the handle body (24) surrounding the axle core; an annular elastic component (42) between the far end of the handle body (24) and the far end of the front end cover (44) and positioned at the inner periphery of the front end cover (44) and the outer periphery of the medial axle part (28), in which the fastening force at the outer periphery of the medial axle part (28) is changed according to the axial bolt-jointed position relative to the front end cover (44) of the handle body (24); and ratchet feel endowing mechanisms (50, 54) installed between the front end cover (44) and the handle body (24) and endowing the ratchet feel according to the rotational pitch angle (theta).

The invention provides a sinker and socks with loose welts, which belong to the field of weaving. The socks with the loose welts comprise welt parts and sock cylinder parts, wherein a basic coil of each of the welt parts is formed by a ground yarn, a concave straight bar of each of the welt parts is formed by an auxiliary yarn, and an elastic yarn is woven into each of the basic coils at an interval of a preset line number of first basic coils; a basic coil of each of the sock cylinder parts is formed by a ground yarn, a concave straight bar of each of the sock cylinder parts is formed by an auxiliary yarn, and an elastic yarn is woven into each of the basic coils at an interval of a preset line number of second basic coils; the line number of the second basic coils is less than that of the first basic coils. In the socks with the loose welts, which are provided by the invention, a structure that the elastic yarn is woven into the basic coils at an interval of a certain line number ofthe basic coils is adopted in each of the welt parts, so that a user can wear the socks comfortably on the premise of ensuring certain fastening force.

The invention discloses an electric tricycle structure. When the structure is used, heat dissipation holes communicate with heat dissipation gaps to form convection current, so that more sufficient heat dissipation is achieved for a battery pack, and the heat dissipation area is wider; the heat dissipation holes are formed in rectangular plates of the front end face and the rear end face of a rectangular frame, in the running process of a tricycle, the heat dissipation holes are windward, the heat dissipation holes on the two side faces form the convection current, and better heat dissipationis facilitated; inserting pieces are inserted from the parts above inserting grooves, at the moment, the inserting pieces are not in contact with an electrical contact, then the inserting pieces slidedown in the inserting grooves 511 until the inserting pieces abut against the bottom surfaces of the inserting grooves, and at the moment, the inserting pieces are just clamped between two contact blocks in the electrical contact; and the contact blocks tightly abut against the inserting pieces of a socket, so that the inserting pieces are prevented from falling off.

The invention discloses an anti-drop plug for an electric vehicle charger, which comprises a panel, an installation shell, installation columns, contact blocks, torsion springs and a socket with an insertion sheet and an insulation head, wherein the installation shell is fixedly connected to the panel; four installation columns are fixed in the installation shell; a contact block and a torsion spring are inserted into each installation column; one end of each torsion spring is clamped on the corresponding contact block, the other end of each torsion spring is clamped on the inner wall of the installation shell, and the two contact blocks form an electric contact body; the panel is provided with two plugging grooves, and the two plugging grooves are correspondingly disposed at the rear sides of the two electric contact bodies. The plug disclosed in the invention is simple in structure, the plug can be effectively prevented from falling off from the jack, the structure is simple, realization is easy, and the use effect is good. The plug provided by the invention can ensure the fastening force, avoids the phenomenon that the power plug of the electro-tricycle falls off due to jolt, and is good in use effect.

A laundry treating apparatus may include a main body having a laundry inlet port on the front panel; a laundry accommodating part which is arranged in the main body and is used for accommodating laundry; and a door rotatably provided on the front surface of the main body so as to open and close the laundry inlet port. The door may include an outer frame provided with an opening and facing an outside of the main body; front glass coupled to a front surface of the outer frame to cover the opening; an inner frame coupled to a rear surface of the outer frame and facing an inside of the main body;and a plurality of hooks used for fastening the outer frame and the inner frame, whereby an increase in fastening force between the outer frame and the inner frame can be expected.

A fastening kit comprises a bolt and a nut. The bolt comprises a head part and a screw. The screw comprises a first end fixedly connected with the head part, a second end connected with the nut in a threaded mode, and an elastic energy storage component combined with the two ends. A deformation structure corresponding to threaded connection acting force is formed on the portion, between the first end and the second end, of the elastic energy storage component. The fastening force of the fastening kit can be effectively maintained after screwing and fastening are achieved in place through elastic deformation of the fastening kit, and fastening failures caused by vibration, heat expansion and cold contract of the environment after fastening is achieved in place are counteracted. Meanwhile, the single-directional screwing-in structure of the head part of the bolt is matched with the smooth top of the nut so that the fastening structure can not be deconstructed, fastening reliability can be effectively improved, and the fastening kit can not be detached without a destructive means. The invention further provides a combined expanding device utilizing the fastening kit.