38results about How to "Optimize contact pressure" patented technology

In a frictional drive vehicle, a load acting on the vehicle such as the weight of a rider is converted into a force that urges two frictionally engaging parts (3L, 3R, 25) toward each other. Thereby, the contact pressure between the two frictionally engaging parts is maintained at an optimum level under all conditions. A weight of a rider may be transmitted to a drive member that frictionally engages a main wheel via a four-link parallel link mechanism (40, 50).

A rotary feed-through, which contains a hollow shaft, which is supported in a first housing part so that it can rotate, with a first sealing surface and a sealing bushing, which is arranged rotationally fixed within a second housing part and which is coaxial with the hollow shaft, with a second sealing surface for contact to the first sealing surface. In order to also enable lower leakage losses, in addition to less wear, with the supply of cooling lubricants and compressed air, the second housing part contains a first lateral supply channel, which can be attached to a coolant supply line or a compressed air supply line, for the supply of cooling lubricant or compressed air via at least one radial opening of the sealing bushing and a second supply channel, which is charged during the supply of cooling lubricant, for the supply of cooling lubricant to a pressure piston, which closes the rear end of the sealing bushing, to increase the contact pressure of the sealing surfaces.

A compact vacuum cleaning device for automatic cleaning of smooth and textile floor coverings, particularly in the private home sector, has a housing, a suction mouth on the underside of the housing, a cleaning roller disposed in a roller chamber, a dust collection container, a suction fan, an electrical travel drive, control electronics, and a power source. The device height of the vacuum cleaning device is less than 180 mm. The maximal suction air stream that enters through the suction mouth, passes through the dust collection container, and leaves the vacuum cleaning device through the suction fan, is greater than 15 l / s. The maximal suction power is greater than 10 W.

A vacuum gate valve includes a closure disk for gas-tight closing of an opening. A connecting rod with which the closure disk is coupled is linearly adjustable by means of a linear drive unit and the closure disk is thus displaceable between a position uncovering the opening and an intermediate position pushed over the opening. At least two limbs are pivotably mounted at one limb end on the back of the closure disk via a first joint and at the other limb end on a support via a second joint to press the closure disk into the closed position. The limbs, the back and the support form an articulated parallelogram. Each of the limbs forms, with the respective first and second joints, a common integral part which includes a resilient material, the first joint and the second joint being formed by a flexible section on the limb.

A rotary electric shaver includes an outer cutter having an upper surface with annular shaving sections, formed with hair entry apertures, and an inner cutter having small blades, which rotate in sliding contact with the outer cutter from below the shaving sections. The outer cutter has a plurality of concentric annular shaving sections. The shaving section adjacent to an outer periphery is lower than the shaving section adjacent to a center. The shaving sections are formed on a plane horizontal to a central axis. This makes it possible to increase a shaving area, to precisely trace the curved surface of a concave portion of skin and to come in contact with the skin with a proper contact pressure, thus permitting smooth shaving of the concave portion. The shaver has a simple structure with a smaller number of components, featuring easier assembly and easier removal of hair bits.

The invention discloses an induction garment and a making method thereof and a human body index collecting system. The induction garment comprises an elastic under bust, n fabric-structured flexible electrodes are arranged at the positions, corresponding to a human body electrocardio induction-sensitive area, of the elastic under bust, and the surfaces, facing a human body when the garment is worn, of the n fabric-structured flexible electrodes are provided with n silica gel rings; the garment further comprises n electrode buckles capable of being correspondingly connected with n electrode buckles arranged on an electrode data processor and n lead wires used for correspondingly connecting the n fabric-structured flexible electrodes with the n electrode buckles, wherein n is an integer greater than or equal to 2. The fabric-structured flexible electrodes are very flexible, can adapt to the body surface hook face of the human body and be easily attached to the body surface of the human body, is comfortable, can be washed with water and repeatedly used, can be easily integrated into a whole with the garment and is suitable for dynamic and long-time monitoring. By adopting the fabric-structured flexible electrodes to perform electrocardio collecting, the heart rate, the electrolyte, the body fat content, breathing and the like of the human body are more accurately collected.

A pressure-adjustable fixture for fuel cell unit includes a controllable pressure source, a pressure guiding mechanism, a press plate, and a pressure-applying carrier mechanism. The controllable pressure source supplies an amount of pressure, which is transmitted via the pressure guiding mechanism to the press plate, and the pressure is further uniformly distributed via the press plate over the fuel cell units loaded on the pressure-applying carrier mechanism for testing. In this manner, the fuel cell units have optimal contact pressure to achieve the best electrical properties.

A welding wire conveyor roller for conveying a welding wire includes a receiving aperture for receiving a receiving pin, and a running surface for the welding wire, and a feeding device for conveying a welding wire includes a drive motor, at least two receiving pins arranged at a distance to each other, and at least two welding wire conveyor rollers with running surfaces for the welding wire which are placed upon the receiving pins by appropriate receiving apertures. For achieving improved conveying properties even with different welding wires, an area elastically deformable in the radial direction is arranged between the running surface and the receiving aperture of the welding wire conveyor rollers.

An exhaust system for diesel vehicles is described, which includes at least one metering device for introducing and metering a pollutant-reducing medium into an exhaust gas flowing through a flow pipe of an exhaust tract of an internal combustion engine, in particular for the purpose of introducing a reduction agent and / or a reduction agent precursor, for example urea and / or an aqueous urea solution, the exhaust tract having at least one flexible flange connection.

The invention provides a fuse carrying device. The fuse carrying device comprises a carrying body (2) and a fixing seat (3), wherein the carrying body (2) comprises a cover plate (4) and a carrying frame (5); and the fuse carrying device further comprises two contact sheets (7); contact clamping openings (8) are formed in the contact sheets (7); the contact clamping opening is an incomplete circular notch having an upwards-facing opening (9); when a fuse (1) is inserted into the contact sheets (7), the contact clamping openings (8) are expanded, the contact cap (6) of the fuse (1) is clamped,so that the fuse (1) can conductively contact with the contact sheets (7); the lower parts of the contact sheets (7) are provided with pins (10) for external electrical connection; longitudinal grooves (11) for accommodating the contact sheets (7) are formed in the fixing seat (3) at intervals; inside-groove notches (12) are formed in the longitudinal grooves (11); and the pins (10) pass through the inside-groove notches (12). The force bearing structures of the contact sheets are optimized, so that the contact sheets still maintain good elasticity after plugging and pulling out are performeda plurality of times with the advantages of a brass material kept, and therefore, the stability of electrical contact can be ensured.

Winding device and method for producing a web roll from a material web. The winding device includes a core being adapted to form a web roll, a core holder device, a core drive, a central roll, and a press roll arrangement. The press roll arrangement includes a web tension compensation roll and a mating roll positioned to contact the core at least at a start of winding. The method includes positioning a core in the core holding device, forming a nip between the core and the central roll, positioning a press roll arrangement against the core opposite the central roll, guiding the material web through the nip, and winding the material web onto the core to form a web roll.

The invention discloses a mechanical intelligent mattress which comprises a mattress body. A plurality of unit air cushions are arranged on the surface of the mattress body, and at least one attaching surface is arranged on the adjacent unit air cushions; each unit air cushion is provided with a vent hole,the vent holes are connected to a same main pipeline through branch pipes, the main pipeline is connected with anair pump, and control valves are arranged on the branch pipes of the unit air cushions; pressure sensors are arranged at the positions, under the unit air cushions of the mattress body, and the pressure sensorsare used for collecting pressure values ofthe corresponding unit air cushions in real time; the mattress body is provided with a power source and a control device, and the power source supplies power to the control device, the air pump, the control valves and the pressure sensors, and the control device is electrically connected with the air pump, the control valves and thepressure sensors correspondingly; and the control device receives the pressure values correspondinglycollected by the respective pressure sensors to control the opening and closing of the air pump and the control valves. The mechanical intelligent mattresshas the following advantages and effects thatthe degree of softness and hardness can be adjusted,a health care function is achieved, and the mechanical intelligent mattress is more comfortable.

A variable speed drive for a continuously variable transmission includes a first transmission element that is rotatable about a first rotational axis and has a convexly-curved transmission surface that is rotationally symmetrical about a first rotational axis. A second transmission element is rotatable about a second rotational axis and has a concavely-curved transmission surface that is rotationally symmetrical about a second rotational axis parallel to the first rotational axis. The curved transmission surfaces face each other and a rigid transmission ring is positioned between and in contact with the curved transmission surfaces to transmit torque therebetween. The position of the ring on the curved surfaces is adjustable to vary the transmission ratio. The transmission surfaces are parallel to each other at least within the adjustment range of the transmission ring.

The invention relates to a tapping screw for engineering plastics, which comprises a screw head and a screw rod, wherein the screw rod is provided with helical threads, an outline of a thread form section comprises an inner incline, an intermediate incline, an outer incline and a thread top surface connected with the outer incline from a screw rod thread bottom to a screw rod thread top; the inner incline, the intermediate incline, the outer incline and the thread top surface are symmetrically arranged along the center and are sequentially connected, the inner incline has a thread angle alpha of 140 DEG+ / -3DEG and an inner thread length L2 of 1 / 5 of the total length of a thread form, the intermediate incline has a thread angle beta of 20DEG + / -3 DEG and an intermediate thread length L2 of 2 / 5 of the total length of the thread form, and the outer incline has a thread angle gamma of 30DEG+ / -3DEG and an outer thread length L3 of 2 / 5 of the total length of the thread form. According to the invention, the stability of multiple connections can be improved and the service life of the tapping screw is prolonged while the connection requirement is met.

The invention discloses a gun-pressed elastic ground wire, which comprises a welding unit and a grounding unit, wherein the welding unit comprises a conductive transfer part and a welding part; the conductive transfer part is connected with a welding gun and can be pressed; the welding part is connected with sheet metal in a welding manner; a concave cavity and an opening groove are formed in thetransfer part; the welding part is arranged in the grounding unit in a penetrating manner; an elastic element is arranged between the welding part and the grounding unit; the grounding unit comprisesan insulating component and a ground wire base; the insulating component movably sleeves the outside of the welding part; and the ground wire base is in contact with the sheet metal. By adopting the transfer part with the concave cavity and the opening groove, the gun-pressed elastic ground wire can be matched with various welding drawing tools, and is convenient to operate; the distance between awelding head and the ground wire base is short, so that the resistance during welding is effectively reduced and the welding success rate is improved; the contact area of the ground wire base and thesheet metal of a car body is large, so that output impedance is effectively reduced and the conductivity is improved; and the condition that the ground wire base has sufficient contact pressure on the car body is ensured through the elastic element to ensure that a welding point is not easily loosened.

The invention relates to a drive train (1) for a hydraulic drive where a friction coupling (3) is arranged between a hydraulic machine (2) and a consumer (5). The coupling (3) has two parts (20A, 20B) which are displaceable towards each other in the axial direction (18) and are connected to the hydraulic machine (2) or to the consumer (5). Hydraulic fluid is introduced by means of a pressure line (28) into a pressure chamber (27) formed between the parts (20A, 20B), as a result of which the complementarily formed friction surfaces (9A, 9B) become frictionally locked together and a torque is able to be transmitted between the hydraulic machine (2) and the consumer (5). The friction surfaces (9A, 9B) are each fixedly connected at least radially to the shaft of the hydraulic machine (2) or of the consumer (5).

The invention relates to a tapping screw for engineering plastics, which comprises a screw head and a screw rod, wherein the screw rod is provided with helical threads, an outline of a thread form section comprises an inner incline, an intermediate incline, an outer incline and a thread top surface connected with the outer incline from a screw rod thread bottom to a screw rod thread top; the inner incline, the intermediate incline, the outer incline and the thread top surface are symmetrically arranged along the center and are sequentially connected, the inner incline has a thread angle alpha of 140 DEG3DEG and an inner thread length L2 of 1 / 5 of the total length of a thread form, the intermediate incline has a thread angle beta of 20DEG 3 DEG and an intermediate thread length L2 of 2 / 5 of the total length of the thread form, and the outer incline has a thread angle gamma of 30DEG3DEG and an outer thread length L3 of 2 / 5 of the total length of the thread form. According to the invention, the stability of multiple connections can be improved and the service life of the tapping screw is prolonged while the connection requirement is met.

The invention emanates from a hand-held grinder, in particular an orbital grinder, with at least one handle (10) in or on a housing part (19) and with a drive unit (12) to drive a grinding disc (14) in or on a disc-shaped tool carrier (13) in a housing (11), wherein the grinding disc (14) is on a grinding disc plane (16) and the direction of force (17) is perpendicular to the plane (16) of the grinding disc. The invention proposes that the handle (10) is connected to the housing (11) through at least one vibration decoupling element (18, 71). The invention also relates to a vibration decoupling device of a hand-held grinder.

A variable speed drive for a continuously variable transmission includes a first transmission element that is rotatable about a first rotational axis and has a convexly-curved transmission surface that is rotationally symmetrical about a first rotational axis. A second transmission element is rotatable about a second rotational axis and has a concavely-curved transmission surface that is rotationally symmetrical about a second rotational axis parallel to the first rotational axis. The curved transmission surfaces face each other and a rigid transmission ring is positioned between and in contact with the curved transmission surfaces to transmit torque therebetween. The position of the ring on the curved surfaces is adjustable to vary the transmission ratio. The transmission surfaces are parallel to each other at least within the adjustment range of the transmission ring.

The present invention relates to a vacuum interrupter comprising an elongated tube in a vacuum comprising a cylindrical sheath surrounded by two end walls (2,3), which are respectively referred to as first and second end walls (1) in which two arc contacts (4, 5) are accommodated, the stationary contact (4) of one of said arc contacts being secured to a first end wall (2) of one of said end walls, the other (5) movable contact is mounted at the end of the rod (6) which is mounted so that the second end wall of the other (3) through the end wall is at the end of the arc contact (4,5) The first so-called closed position of the opposite end of the interrupter A is slid in the axial direction between the open position of the arc contact and the opened position of the separate interrupter, and a compression spring (11) adapted to apply contact (5) in the closed position of said arc contact (4, 5).

The invention discloses a multifunctional storage battery box supporting alternating current output, and relates to the technical field of storage battery boxes, the multifunctional storage battery box comprises a box body, a partition plate is arranged at an opening of the upper end of the box body, and a DC-to-AC device is arranged on the upper end face of the partition plate; a box cover body matched with the box body is arranged above the DC-to-AC device; the DC-to-AC device comprises an inverter circuit, and the inverter circuit comprises a DC-DC booster circuit, a rectifying, filtering and voltage stabilizing circuit and a full-bridge inverter circuit; the outer surface of the box cover body is also provided with a load overload protection switch, and the load overload protection switch comprises a thermal bimetallic strip. According to the invention, by arranging the DC-to-AC device and the inverter circuit for improving the output power, the storage battery box has a DC-to-AC output function, and the storage battery box can supply power to high-power AC electric equipment; by arranging the load overload protection switch, the circuit can be disconnected when the load is not used, the load is protected, electric quantity loss is reduced, and meanwhile the circuit can be disconnected to protect the load and the circuit when the circuit is overloaded.

The present invention provides a cooling structure of a fuel injection valve that can cope with the high load operation of the engine by efficiently transferring heat from a nozzle to a cylinder head, thereby improving the cooling efficiency of the injection valve including the nozzle valve. In the cooling structure, fuel is injected through an injection hole by opening and closing of the needle valve 2 that is reciprocatably fit inside the nozzle and removably attached to a seating portion of the nozzle at a tip. The cooling structure comprises a metal ring member 10 which is interposed between an outer circumferential face of the nozzle nut 3 and an inner circumferential face of the outer sleeve 6 so as to transfer heat from the nozzle 1 to the cylinder head 110 via the nozzle nut 3 and the outer sleeve 6.

The present invention provides a female contact whose cost is reduced while securing a good contact pressure with a male contact. A female contact 10 has a ceiling portion 34 composed of a first ridgeportion 34A and a second ridge portion 34B. The first collar portion 34A has a first arm portion 341A extending from the upper end edge of the first contact spring portion 32 toward the second contact spring portion 33. In addition, the second flange portion 34B has a second arm portion 341B extending from the upper end edge of the second contact spring portion 33 toward the first contact springportion 32 side. Furthermore, the first hook portion 34A has a first claw portion 342A extending toward the second arm portion 341B. In addition, the second hook portion 34B has a second claw portion342B extending away from the first claw portion 342A toward the first arm portion 341A. When the distance between the first contact spring portion 32 and the second contact spring portion 33 expands to a predetermined distance, the first claw portion 342A and the second claw portion 342B engage with each other to prevent the expansion beyond the same.

The invention provides a design method of a non-circular C-shaped damping ring with controllable contact pressure. Based on the design method, corresponding non-circular C-shaped damping ring free profiles can be designed according to different contact pressure requirements, so that the contact pressure depends on the gear rotating speed and also depends on profile deformation, and the problem that the contact pressure is uncontrollable under the designed rotating speed is solved; and the optimal contact pressure corresponding to the maximum vibration reduction efficiency of the damping ring can be obtained under the designed rotating speed. Based on the design method, the contact pressure between the damping ring and the gear is uniformly distributed, and the contact rate is high. When the vibration damper is installed in a gear, even contact pressure can be generated, the contact rate is high, and the situation that the vibration damping performance is reduced due to a non-contact area can be avoided.

The invention discloses a lower-opening type weir gate. The lower-opening type weir gate comprises a weir frame assembly, a weir board and driving mechanisms; a weir board through hole is formed in the bottom of the weir frame assembly, an overflowing hole is formed in the side surface of the weir frame assembly, and a containing space is arranged in the weir frame assembly; the weir board passesthrough the weir board through hole and is slidably installed in the containing space of the weir frame assembly and surrounds the overflowing hole, sealing pieces are arranged between the two sides of the weir board and the weir board assembly correspondingly, when the weir board slides upwardly, the overflowing hole is closed, and when the weir board slides downwardly, the overflowing hole is opened; and the driving mechanisms are connected with the weir board and used for driving the weir board to slide in the weir board assembly. The lower-opening type weir gate is of a four-sided sealingstructure and can be applied to an outlet, a pollutant intercepting pipe or an initial rain pipe, the applying range is wide, and security and reliability are achieved.

PROBLEM TO BE SOLVED: To bring a contact part of each card contact terminal touching a card close to each external connection terminal and to secure good spring characteristics of each card contact terminal. ŽSOLUTION: This card adapter device is provided with a card mounting part 9, a plurality of card contact terminals 6 each having a contact part 6a capable of touching the card 13 attached to the card mounting part 9, and a plurality of external contact terminals 7 arranged on the front side of these card contact terminals 6 and connectable with an external apparatus. Each of the card contact terminals 6 is formed into a cantilever shape, in which the contact part 6a is positioned on the external contact terminal 7 side individually, and provided with a plurality of conduction parts 8 protruded from the base parts of the respective card contact terminals 6 for electrically connecting the card contact terminals 6 to the corresponding external contact terminals 7 respectively. Ž