Pneumatic elastic element
(57) Abstract:Usage: engineering. The inventive pneumatic elastic element contains a hermetically sealed from one end of the cylinder filled with compressed gas and liquid, is placed in the cylinder piston Cup and restrictive washer mounted on the rod extending from the second cylinder through the seal Assembly. In the area of the site seal in the cylinder fixed sleeve with an axial projection with the possibility of entering it into the cavity of the Cup when extended from the cylinder stroke position. The body is made in one piece with the piston. 2 Il. The invention relates to the field of engineering, in particular to pneumatic elastic elements (gas springs), and can be used for opening and holding open the rear doors, engine covers, hatches car.Known pneumatic elastic elements, which is the soft limit stroke of the open tailgate of the vehicle due to the additional piston (second) posted on the rod inside the cylinder of the elastic element, which, coming in contact with the section of the cylinder of reduced diameter, creates additional resistance p 
The disadvantage of this design is its high complexity.Known pneumatic spring containing a hermetically sealed from one end of the cylinder filled with a compressed gas and a certain amount of liquid placed in the cylinder, the piston, the bearing ring and the guide washer mounted on the rod, with the possibility of axial movement in and out of the cylinder through a seal Assembly, which is a sleeve with an axial protrusion, inside which is located the area of the rod with axial and radial channel at the end of the extension rod from the cylinder. When this annular gap between the sleeve and the rod is an additional resistance to flow of the fluid than is achieved soft limit stroke of the open tailgate of a vehicle. Moreover, the piston rod in all positions the tailgate must be directed downwards relative to the body of the spring 
The disadvantage of this device is low-tech manufacturing and a hard limit stroke of the open door at the location of the device stem up, in which there is a flow of fluid from the working area of the gap until the travel limit of the door opening.Most is from one end of the cylinder, filled with a compressed gas and a liquid, is placed in the cylinder piston Cup and restrictive washer mounted on the rod extending from the second end of the cylinder through the site seal in the zone in which the cylinder is fixed to the sleeve with an axial projection with the possibility of entering it into the cavity of the Cup when extended from the cylinder stroke position 
The disadvantage of this device is low-tech manufacturing.Object of the invention is the improvement of the pneumatic element by providing a soft travel limit open the door regardless of the position of the rod element, as well as improving the manufacturability of the parts of the element.To solve the problem in pneumatic elastic element containing a hermetically sealed from one end of the cylinder filled with compressed gas and liquid, is placed in the cylinder piston Cup and restrictive washer mounted on the rod, with the possibility of axial movement in and out of the cylinder through a seal Assembly, which is a sleeve with an axial protrusion, according to the invention, on the rod between the piston and sleeve fixed glass made integral with porn the A.A comparison of the claimed technical solution with the level of technology on scientific, technical and patent documentation on the priority date in the main and adjacent sections shows that the set of essential features of the claimed solution was not previously known, therefore, it corresponds to a condition of patentability "novelty."Analysis of the known technical solutions in the field of technology have shown that the proposed device has characteristics that are absent in the known technical solutions, and their use in the claimed combination of features gives the opportunity to learn new technical result, therefore, the proposed solution involves an inventive step compared to the current level of technology.The proposed solution is industrially applicable, because it can be produced industrially, workable, feasible and reproducible, therefore, meets the condition of patentability "industrial applicability".In Fig. 1 shows a pneumatic spring with stem up, longitudinal section; Fig.2 execution of the piston of the pneumatic element.Element agnosto move is the rod 2, coming out through the seal Assembly 3. At the end of the rod is placed in the cylinder, a fixed piston Assembly consisting of the piston 4 with the throttle channel 5 and the groove 6, the distribution ring 7 and restrictive washer 8 with grooves 9. Piston Assembly divides the cylinder 1 in the cavities a and B.On the rod 2 near the piston installed node item in the shape of the glass 10, and the cylinder near the site of the seal 3 is fixed to the sleeve 11, having an axial projection 12, is made in the direction of the piston. The Cup 10 when the movable or stationary mounted on the shaft 2 and the sleeve 11 can be performed by receiving an annular throttle gap between the inner diameter of the cylinder 1 and the outer diameter of the Cup 10 and between the inner diameter of the Cup 10 and the outer diameter of the protrusion 12 of the sleeve 11, or getting the throttle gaps in only one of the mentioned places, or obtaining clearances, non-throttle in both places.The most common setup diagram element for opening, such as the tailgate of the vehicle, such that in the process of opening the door is the revolution of the element. When the door is closed the predominant position of the item stem down to increase the tightness of the site upl the rod up. The following describes the operation of pneumatic elastic element for this schema installation.When removing or reducing the external axial load acting on the piston rod 2 of a pressure element at the beginning of the door opening, the rod under the action of gas pressure starts to move from the cylinder 1. When this occurs, the preload Cup 10; if it is rolling fastening on the shaft 2, the washer 8 gas from the cavity And through the annular gap between the Cup 10 and the cylinder 1, the grooves 9, the throttle channel 5 and the groove 6 flows into the cavity B. the Fluid in the cavity And, when the position of the rod element 2 down in the event of a coup item stem 2 moves up to porshneva site and fills the cavity 13 of the Cup 10, and partly through the annular gap between the Cup 10 and the cylinder 1, the grooves 9, channel 5 and the groove 6 flows into the cavity B. the speed of the extension rod 2 of the cylinder 1 is slowed down due to the greater viscosity of the liquid compared to gas. But when the described scheme of installation of an overflow of the liquid is performed at the time of the coup element, long before the limit stroke of the open door. In the position of the element close to fully extended, is the displacement of fluid by the protrusion 12 of the sleeve 11 from the cavity 13 of the Cup 10 and she ri is an even greater decrease in the rate of extension of the rod 2 of the cylinder 1, but already in the desired time and, therefore, is the soft limit stroke of the open door.Even if the item layout considerations is mounted so that it works without revolution, constantly stock up, the efficiency of the soft travel limit door opening is not reduced because the glass 10 in the compressed position of the element (when the door is closed) will be fluid and will keep it until the travel limit of the door opening.When installing the item constantly rod down the liquid is about sleeve 11 throughout the course of opening the door, and when the element's position close to the fully extended, is the displacement of fluid from the cavity And into the cavity B already described and is provided by the soft limit stroke of the open door.The Cup 10 and the sleeve 11 can be made highly efficient method without special machining. The Cup 10 by means of a stamping from sheet metal or powder metallurgy. The bushing 11 - methods of powder metallurgy or casting plastic. This is achieved by improving the manufacturability of the design and reducing the cost of manufacture of the item in the conditions of mass production the config compressed gas and liquid, placed in the cylinder piston Cup and restrictive washer mounted on the rod extending from the second end of the cylinder through a seal Assembly in which the cylinder is fixed to the sleeve with an axial projection with the possibility of entering it into the cavity of the Cup when extended from the cylinder stroke position, characterized in that the glass is made in one piece with the piston.
SUBSTANCE: holder designed for the attachment of stem that has turning area (19) and supporting area (20), bent at an angle with it, consists of supporting area (1) with the provided supporting hole (3) in it for the insertable area (20) from the mounting side (7). Meanwhile, the area (20) has the possibility of rotation in the hole (3) round its axis and after the installation of area (20) into the hole (3) the area (19) projects from the upper side (21) of the holder beyond its part (1) with the possibility of rotation round area (20) axis. The holder also consists of rearward part (8) that is located at the mounting side (7) before the hole (3) with the offset and has open mounting groove (17) on one side for areas (19) and (20) passing through. Between part (8) and part (1) there is a space (9) for area (19) location in it. From the lower side (14) of the holder that is opposite to its upper side (21), there are mounting areas (5, 6) for holder attachment to bearing part. Mounting groove (17) is open from the lower side (14) of the holder. When in connection with the bearing part the area (19), installed into holder stem, is held in space (9) between parts (1) and (8).
EFFECT: development of holder for stem attachment that allows the possibility of comparatively easy installation of stem support area into it and that in the attached condition on the bearing part securely holds the installed stem preventing the stem's inadvertent disconnection.
7 cl, 3 dwg
SUBSTANCE: invention relates to locking unit for the first flap cover, the second flap cover and bearing element. It comprises locking element (101) with grip (120) arranged with the possibility of movement in the first flap cover, and actuating mechanism (112) that operates from drive. Mechanism is used to move locking element (101). Locking element (101) is arranged with the possibility of connection, in the first position, of the first flap cover with the second flap cover into a single unit. And with possibility of disconnection, in the second position, of the first flap cover from the second flap cover. And also with the possibility of joint fixation, in intermediate position, of the first flap cover and the second flap cover to bearing element. In intermediate position between grip (120) of locking element (101) and actuating mechanism (112) there is a functional connection arranged. Actuating mechanism (112) comprises stop disk (125) installed movably on bearing element. Stop disk (125) has a longitudinal slot with the first open end and the second closed end. In the first position grip (120) is arranged in the first end of longitudinal slot, and in intermediate position - in the second end of longitudinal slot.
EFFECT: development of simple to make and reliable to operate locking unit.
14 cl, 15 dwg
SUBSTANCE: invention relates to automotive engine active hood drive. Active hood pneumatic drive 3, 5 comprises cylinder 7 and piston 18 travelling in cylinder 7 between point of rest and pulled out position, and locked in cylinder 7 in position of rest. Piston 18 in point of rest is preloaded by spring element 20 in direction of pulled out position. Spring element 20 is a rubber-elastic element with its deformation making less than one tenth of piston stroke.
EFFECT: higher safety due to gapless joint between hood and body.
14 cl, 4 dwg
SUBSTANCE: proposed device relates to automotive industry and may be used for car trunk cover locking relative to car body at all stages of car body painting. Proposed device comprises casing accommodating two flexible elements. "П"-like hooks are arranged on one end of said elements to engage with trunk cover. it incorporates also a stop and handle. Casing incorporates a trust arranged between flexible elements. Aforesaid handle and rind embracing flexible elements are arranged on one end of said trust. Stop, supports and hook to engage with car rear panel are arranged on opposite end of said trust. Supports and stop may accommodate car body flange between them. Note here that stop and hook are directed opposite each other. Length of stop and supports is selected proceeding from L1 > L2 > C, where L1 is height from face surface of the stop to point of mounting on the trust, L2 is length from support face surface to mounting point on the trust, C is height of car body thrust flange.
EFFECT: ease of mounting on car trunk cover during car body painting.
SUBSTANCE: adjustable support comprises cylindrical case and electric screw drive. Case for rearrangement of rear door comprises top and bottom sections that partially displace one into another. Note here that every said section has thrust sleeve fitted on its end. One thrust sleeve of case top section is retained by resting on rear door while another thrust sleeve is retained by resting on automobile body. Rear door bottom section support stationary inner tube is provided with coil spring. Coil spring bottom rests on mount retained on inner tube and spring top is retained by opposite free end at case top section.
EFFECT: ruled pout spontaneous opening of rear door from intermediate position.
7 cl, 5 dwg
SUBSTANCE: invention relates to automotive industry. Engine housing 22 consists of assembly of first wheel arch 24 and hood assembly 12. Hood assembly 12 comprises top panel 48, first lateral panel 46 connected with first guide 52 and first sealing element 62. Top panel 42 is, in fact, leveled with hood assembly pivot axle 68. First lateral panel 46 is connected with top panel and arranged in plane parallel with first wheel arch. First sealing element 62 is connected with first wheel arch assembly and extends therefrom toward first lateral panel 46 for engagement with first guide 52.
EFFECT: sealed engine.
14 cl, 9 dwg
SUBSTANCE: invention relates to automotive industry. Opening section lock comprises lug turning about axis D to close the mortise located at the bed. Said lug comprises first bulged end to interact with second clevis and second edge, an extension of said first one. Second clevis applies first force F1 to first edge to allow lug turn about axis D to open said mortise. Bulged second edge interacts with first clevis. First clevis applies second force F2 to first edge to allow lug turn about axis D to open said mortise. Opening section retainer comprises abode described lock. Lock bed is secured at carrier opening section. Said lug interacts with first clevis to get into opening section closed position and with second clevis to get into opening section opened position. Opening section is furnished with opening mechanism to displace between closed and opened position. Said section as-closed, covers the carrier roof opening. Section as-opened, opens the roof opening. Opening mechanism comprises one link. Link first end is articulated with carrier body around first fixed axle C. Link second end is articulated with opening section around second crosswise axle B. Opening section can turn about third crosswise axle A displacing in lengthwise direction relative to carrier roof.
EFFECT: simplified design.
5 cl, 6 dwg
SUBSTANCE: invention relates to hinge between vehicle roof 4 and vehicle body part 6 including first hinge joint connected with vehicle roof 6 and second hinge part connected with vehicle body part 6. There are two hinge elements articulated with first and second hinge parts. There is also adjustment element articulated with first and second hinge parts. Note here that said first hinge part accommodates sliding element while second hinge part accommodates appropriate guide element interacting with said sliding element.
EFFECT: guaranteed distance between sliding parts.
6 cl, 3 dwg
SUBSTANCE: invention relates to fastener (4) for cover (3) under hood (2). Device comprises first support element (6) to be secured at fixed part (5) and second element (7) to be secured at cover (3). Support element (6) comprises rod (8) with radial variation of cross-section while support element (7) includes resilient locking element (11) that varies the cross-section. Cross-section change represents a radial expansion (9) of rod (8). Resilient locking element (11) is spaced from rod (8) at position separated from said expansion (9). Expansion (9) is spherical while resilient locking element (11) includes resiliently fitted cups (13). At pressing on cover (3) said locking element (11) gets separated from expansion (9) to move along the rod (8).
EFFECT: decreased health hazard for pedestrians.
7 cl, 7 dwg
SUBSTANCE: invention relates to device for opening and closing a cover which device is made in vehicle body. The device includes articulated four-link chain provided with opened position supporting mechanism which contains: hitch pin protruding from rear end part of the second articulated arm; supporting pin protruding from area of base of elongated element of multilink mechanism bracket; arrestor catch with central area where this arrester catch is rotatably mounted on supporting pin; and power spring which pulls the arrester catch in one direction relative to supporting pin as the centre. The arrester catch has guiding surface; concaved engagement area being coupled with hitch pin. The guiding area contacts with the hitch pin when cover opening operation is performed, and contact position between them is moved towards the centre in accordance with turning relative to supporting pin as the centre which turning is performed against pulling force acting from the side of power spring.
EFFECT: ease of use.
4 cl, 16 dwg
FIELD: machine building.
SUBSTANCE: damper consists of cylinder chamber filled with fluid, of piston installed inside cylinder chamber, of rod connected to piston and of accumulator. The accumulator facilitates generation of damping force produced by the piston rod due to fluid flow from the side of compression in the cylinder chamber. One coil of spiral damping groove is formed on internal periphery of the cylinder chamber within the ranges of piston stroke. Width of the damping groove is constant along its whole length. Depth of the damping groove is gradually diminishes along the spiral in the direction whereto the piston rod is pushed out. The length of the piston along axial line is less, than pitch of the damping groove.
EFFECT: simplified design and more efficient control of damping force of damper.
6 cl, 7 dwg
SUBSTANCE: invention relates to railway transport. The system contains vertical hydraulic dampers installed under body. Each damper is made as piston pump with discharge and free-flow intercommunicating via throttle chambers for working fluid. The throttle is equipped with rod of variable cross-section with thrusts for end positions. Throttle rod movement drive is made as return spring and solenoid. Solenoid core is connected with throttle rod. Solenoid coils are attached to output terminals of control unit. Input terminals of control unit are connected with electric power source and oscillation frequency sensors installed on body in the area of each damper location. Control unit provides automatic change of end positions of throttle rod by solenoid electric power switching on or off according to indications of corresponding sensors of body vibration frequency.
EFFECT: design simplification and improvement of car movement smoothness.
3 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: inclination angle of relationship between resistance force modulus and deflection speed modulus of an elastic member is changed if current resistance force modulus differs from the specified value. The specified value of resistance force is changed depending on current deflection of the elastic member. The specified current value of resistance force is set so that it is directly proportional to modulus of current deflection of elasticity force, which is corrected to resistance force vector, of the elastic member of its static value. The device for implementing the method represents a hydraulic telescopic damper, in which the resistance force, the modulus of which depends on the modulus of deflection variation speed, is created during the suspension deflection variation. As per the first version, the damper includes a bar fixed at the compression chamber bottom. The bar has a four-sided variable cross-section in the working section of its length. At the damper compression, the bar is retracted into inner cavity of the stock. As per the second version, the damper includes two bars, as well as a compensating chamber that is separated from the compression chamber with a partition wall and partially filled with liquid. The bars are made in the form of a rotation body and installed inside the first and the second guide elements respectively with possibility of longitudinal movement.
EFFECT: preventing resonance, and minimising the resultant force acting on the under-spring mass of the transport vehicle.
17 cl, 10 dwg
FIELD: machine building.
SUBSTANCE: shock absorber includes a housing, a cylinder, a stock, a piston-valve, a sleeve-governor, a rod with tracks, which is telescopically installed in the stock, a bottom valve, and a guide of the stock. Tracks on the rod are screw-shaped and have constant or variable angle of twist to the stock axis. When moving on the rod track, the guide stop turns the sleeve-governor; at that, holes in the stock are covered, thus changing the quantity of bypassed liquid. As per the first version, in the shock absorber the rod end is fixed in the bottom valve zone against being turned and against axial movement. As per the second version, in the shock absorber the rod end is fixed in the bottom valve zone against axial movement. Shock absorber includes an additional valve with channels adjoining the bottom valve holes. When moving on the rod track, the guide stop that is additionally made on the stock turns the rod; at that, holes in the additional valve are covered, thus changing the quantity of bypassed liquid.
EFFECT: obtaining automatic adjustment of a shock absorber force depending on a stock position, as well as providing the possibility of readjustment of the shock absorber without its removal.
2 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: shock absorber contains a cylinder with work fluid. The piston is inserted in the cylinder and separates the cylinder to two chambers. The piston rod is connected with the piston. The damping valve is installed in the first channel. The through section regulation mechanism is installed in the piston and regulates the through section of the second channel based on the piston rod position. The damping force decreases for tension and increases for compression in the set rod position at large extension. The damping force increases for tension and decreases for compression in the set rod position at small extension. In the shock absorber under the second option the damping force decreases for tension and compression in set rod position at small extension. In the shock absorber under the third option the damping force decreases for tension and compression in set rod position at large extension. The damping force increases for tension and decreases for compression in the set rod position at small extension. The shock absorber under the 4th option is installed between the wheel and body of the vehicle. Mechanism regulating the vehicle height is installed in parallel with the shock absorber.
EFFECT: extension of dampening characteristics.
16 cl, 25 dwg
FIELD: machine engineering.
SUBSTANCE: hydraulic damper (10) contains the piston valve (22) fixed at the end of the piston rod (11), the base valve (27), the tank chamber (15). The base valve includes the compression side channel (31). The first coil spring (28) is provided between the first valve (24) and the base valve, and the second coil spring (23) is provided between the first valve and the piston valve. The compression side channel is closed by the first valve near the maximum compression state, reducing the oil flow rate, entering the tank chamber. The second valve (33), passing through the first valve centers and the base valve, regulates the oil flow rate, entering the tank chamber (15), when the pressure is equal to or exceeds the specified level of the pressure in the oil chamber (21b). In the second embodiment, the third valve is provided on the lower part of the first valve.
EFFECT: damping force characteristic change.
3 cl, 30 dwg