US3273196A - Door check - Google Patents

Door check Download PDF

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Publication number
US3273196A
US3273196A US42059264A US3273196A US 3273196 A US3273196 A US 3273196A US 42059264 A US42059264 A US 42059264A US 3273196 A US3273196 A US 3273196A
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Prior art keywords
cam
spindle
follower
housing
check
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English (en)
Inventor
Voster Reinhold
Schmid Wolfgang
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Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
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Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/225—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the bottom of wings, e.g. details related to seals, covers, connections to the wings, embedding in the floor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/624—Arms
    • E05Y2201/626—Levers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/41—Concealed
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/452—Mounting location; Visibility of the elements in or on the floor or wall
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the present invention relates to door checks for single acting and double acting swinging doors. More particularly, the invention relates mainly to improvements in the construction, mounting and operation of the check and damper mechanism in such devices.
  • Another object of the invention is to Iprovide a spindle which cooperates with the check cam in a novel way to allow for noiseless movement of the cam from its dead center position.
  • a further object of the present invention is to provide a novel damper cylinder which may be utilized in a door check of the above outlined character.
  • An additional object of the invention is to provide an improved casing for use in our door check and to construct the casing in such a way that it affords convenient access to all such component parts which might require adjustment tor inspection when the door check is installed in a door frame or in the floor beneath a swinging door.
  • Still another object of the invention is to provide a door check which is of simple, compact and rugged design, which can accommodate a Very strong closing spring, and wherein the closing and/ or the damping action may be regulated in a ⁇ simple manner.
  • a door check which comprises a housing, a spindle rotatably mounted in and having an end extending from the housing so that it may be coupled to a swinging d-oor, a control cam mounted on the spindle in the housing, a spring-biased follower for tracking and for normally holding the control cam in an angular position in which a swinging door connected to the spindle is closed, a check cam angularly mova'bly mounted on the spindle in the housing and having a portion cooperating with a portion of the spindle to determine the extent of relative angular movement therebetween, a second follower for tracking the check cam, and a damper mechanism provided in the housing and operative to bias the second follower against the check cam.
  • Another feature of our invention resides in the provision of a hydraulic damper mechanism which includes a relief valve which opens to reduce the pressure in the cylinder just before the check cam reaches a dead center position with reference to the second follower.
  • FIG. l is a longitudinal central vertical section through a door check which embodies our invention, the section being taken in the direction of arrows substantially as seen from the line I-I of FIG. 2;
  • FIG. 2 is a top plan view of the door check with the lid of the housing and the door-engaging arm removed;
  • IFIG. 3 is a horizontal section substantially as seen in the direction of arrows from the line III-1111 of FIG. l.
  • a check for single acting or double acting swinging doors which cornprises an outer casing 10 adapted to be embedded in the floor structure beneath a swinging door, not shown.
  • the casing 10 accommodates a metallic housing 200 which inclfudes a pan 2 and a lid 2a.
  • the casing 10 also comprises a cover plate 11 which overlies the lid 2a and provides room for an upwardly extending annular sleeve 2h which is xed to the lid 2a and surrounds a median portion of a vertical spindle 1 (also called check shaft) whose upper end portion is nonrotatably but detachably secured to a horizontal arm 1a.
  • the arm 1a may be attached to or recessed into the underside of a swinging door so that the arm and the spindle 1 then constitute the lower hinge of the door.
  • the spindle 1 is journalled in three antifriction bearings including a radial ball Ibearing 3 which is mounted in the lid 2a, a needle bearing 4 which is mounted in the bottom wall 2b of the pan 2, and a thrust bearing including a ball 5 which is surrounded by the needle bearing 4.
  • the spindle 1 carries two radial cams or plate cams including a control cam or closing cam 6 and a check cam or damper cam 7 located at a level below the control cam.
  • the periphery of the control cam 6 is tracked by a roller follower 13 which is mounted on a rockable lever 15.
  • This lever is mounted on a pivot pin 15a which is supported in one or more lugs 2c provided at the inner side of one side wall or lateral wall 2d of the pan 2 and close to the fr-ont portion 12.
  • the axis of the pin 15a is parallel to the axis of the spindle 1.
  • the free end 17 of the lever 15 is engaged by a power rod 8a comprising two telescopically connected sections which are biased apart by a strong closing spring 8, called power spring.
  • the front section of the power rod 8a is provided with a conical tip 8b which extends into a complementary conical recess in the free end 17 of the lever 15, thus enabling the lever to rock about the pin 15a while the rod 8a remains free to pivot about its rear end portion 8c.
  • the bias of the power spring 8 is adjustable -by a lever 20 which is secured to the rear wall 2e of the pan 2, as at 20a, and may be pivoted by the tip 22 of a regulating screw 21 which is accessible upon detachment of the cover plate
  • the front portion 12 of the pan 2 is of reduced width, see particularly FIGS. 2 and 3.
  • the width of this front portion is just suicient to accommodate the cams 6, 7.
  • the housing 200 including the pan 2 and cover 2a cornprises two mirror symmetrical halves which are located at the opposite sides of a central vertical symmetry plane 33 passing through the axis of the spindle 1 and preferably (ibut not necessarily) through the axis of the regulating screw 21.
  • the lugs 2c are located at one side of the symmetry plane 33 directly opposite similar lugs 2f which form part of the other side wall 2g of the pan 2 and accommodate a vertical pivot pin 38 for a lever 16 whose free end 18 is engaged by the piston rod or push rod 19 of a damper device 9 which is constructed in accordance with an important feature ofour invention.
  • the pin 38 is adjacent to the front portion 12 and the lever 16 carries a roller follower 14 which tracks the periphery of the check cam 7.
  • the push rod 19 is connected to a piston 43 which is reciprocable in a cylinder 42, the latter being pivotable about a pin 42a which is secured to the bottom wall 2b of the pan 2.
  • the tip of the push rod 19 may follow all angular movements of the free end 18 of the lever 16 when the latter is rocked in response to rotation Aof the check cam 7.
  • a comparatively weak helical expansion spring 40 operates between the bottom wall 41 of the cylinder 42 and the piston 43 to maintain the tip of the push rod 19 in permanent engagement with the free end 18 of the lever 16 and to slightly bias the follower 14 against the check cam 7.
  • the upper cam 6 is held against axial movement with reference to the spindle 7 by a washer 6a which is inserted below a collar 1b on the spindle.
  • the lower cam 7 is fixed in selected axial position by a first washer 29 which abuts against the underside of the cam 6 and by a second washer 30 which is fixed by a split ring 31 extending into a circumferential groove provided in the periphery of the spindle 1.
  • the cam 6 need not rotate with reference to the spindle.
  • That portion of the spindle 1 which extends through the bore 23 of the cam 7 is provided with two cutouts 27 which are located diametrically opposite each other and whose innermost zones are bounded by two at and cornparatively large parallel peripheral faces 28.
  • the cam 7 is provided with two triangular projections 24 which are also located diametrically opposite each other and are 'bounded by mutually inclined tiat internal surfaces 25, 26.
  • the two surfaces 25, 25 and 26, 26 are respectively parallel to each other.
  • Each surface 25 makes with the corresponding surface 26 an obtuse angle and the shortest distance between the planes of the surfaces 25, 25 or 26, 26 corresponds to the distance between the peripheral faces 28.
  • each face 28 abuts against one of the internal surfaces 25.
  • the projections 24 need not extend throughout the full axial length of the bore 23, see FIG. l.
  • the surfaces 25 are substantially parlallel to the symmetry plane 33, the surfaces 26 enclose with this plane .an angle of approximately l degrees.
  • the surfaces 25 are substantially parallel to the plane 33 when the door is closed.
  • the follower 14 begins to track the flank 35 of the cam lobe and imparts to the check cam an impulse which causes it to turn with reference to the spindle 1 until the internal surfaces 26 reach the peripheral faces 28.
  • the symmetry plane 36 of the check cam 7 extends through the axis 37 of the follower 14.
  • axis 37 is located at a comparatively large distance from the axis of the pivot pin 38 so that the arc described by the axis 37 is a at curve which deviates only slightly from .the symmetry plane ⁇ 36.
  • the angle 38a enclosed by the symmetry planes 33, 36 is about 15 degrees, i.e., it can be said that the curve described by the axis 37 of the follower 14 (when the latter is rocked by the flank 34 on the lobe of the cam 7) also encloses with the symmetry plane 33 an angle which approximates 15 degrees.
  • the check cam 7 comprises two mirror symmetrical halves which are located at the opposite sides of t-he symmetry plane 36 and which are respectively provided with flanks 34 and 35. Each of these anks is coniigurated in such a way that, if tracked by the follower 14, the axis 37 of the follower moves closer to the axis of the spindle 1 if the cam 7 is rotated in a sense to cause the follower to travel .away from the tip 32. After an angle of about degrees, the flanks 34, 35 move away from the axis of the cam 7, as at 39, so Ithat the axis 37 then begins to move away from the spindle 1.
  • flanks 34, 35 at 39 are rather sudden so that the axis 37 is rapidly moved away from the spindle in response to relatively small angular displacement of the cam 7.
  • the follower 14 engages the cam 7 at one of the points 39, the door is turned through about 90 degrees from its open position and the piston 43 then reaches the end of its suction stroke so that the cylinder 42 accommodates a maximum quantity of fluid.
  • the moment or impetus which is needed to cause the check cam 7 to leave Ithe dead center position of FIG. 3 is furnished by the expansion spring 40 in the cylinder 42 of the damper device 9.
  • the spring 40 transmits the necessary force through the piston 43, push rod 19, lever 16 and follower 14.
  • the end face 44 of the piston 43 will move toward the bottom wall 41 of the cylinder 42.
  • the chamber between the piston 43 and the bottom w-all 41 is filled with oil or another suitable hydraulic liquid which is then compelled to escape through a system of ducts including a channel 44 provided in a pin 45.
  • the outiiow of liquid through the channel 44 is regulatable by a needle valve 46 which can be reached with a screwdriver or a similar tool through suitable apertures provided in the lid 2a and cover plate 11, see FIG. 1.
  • the resistance offered -to the escaping liquid inthe channel 44 and by the needle valve 46 is undesirable when the check cam 7 Aapproaches its dead center position Ibecause such resistance results in high compression of the liquid and in substantial angular acceleration of the check cam as soon as it can move beyond the dead center position.
  • a normally closed relief valve 47 which is shown in FIG. 3 and which is operated bythe piston 43.
  • the relief valve 47 comprises a reciprocable valve member 48 which is biased by a helical spring 49 so as to normally abut against an annular valve seat 50 machined into the bottom wall 41 of the cylinder 42 ⁇ and surrounding a relief passage 51 which communicates with the cylinder chamber between the bottom wall 41 and the end face 44 of the piston 43.
  • the head of the valve member 48 comprises a projection which extends through 4the passage 51 and into the path of the end face 44' on the piston 43.
  • the bias of the spring 49 may be regulated by a screw 52 which is threaded into a tapped bore machined into the outer side of the bottom wall 41.
  • the Ibias of the spring 49 is adjusted in such a way that, in normal operation, the valve member 48 remains in sealing engagement with the seat 50 and moves away from the seat only when its projection is engaged by the end face 44 of the piston 43 or in the event of faulty operation, i.e., if the pressure prevailing in the chamber of the cylinder 42 rises beyond a maximum permissible value at a time the projection of the valve member 48 is not engaged by the piston 43.
  • the relief valve 47 also performs the function of a safety valve, for example, to prevent damage when the door is swung open or closed by a strong gust of wind or for another reason.
  • the passage 51 is free to communicate with a passage 53 which leads into the interior of the pan 2 as soon as the head of the valve member 48 is moved away from the seat 50.
  • the diameters of the passages 51 and 53 are preferably selected in such a way that the liquid pressure in the chamber -of the cylinder 41 drops to zero as soon as the valve 47 opens so .that the follower 14 is then biased solely by the rather weak ⁇ spring 40. This takes place shortly before the carn 7 reaches the dead center position of FIG. 3. Therefore, the check cam 7 is accelerated only negligibly even though the follower 14 moves from engagement with the ilank 34 into engagement with the iiank 35, or vice versa. This reduces the noise and results in greatly reduced wear on the check cam 7, follower 14, lever 16 and damper device 9. It is clear that the chamber of the cylinder 42 is filled automatically (via needle valve 46) as soon as the piston 43 Ibegins to perform a forward stroke by moving away from the bottom wall 41. The interior of the pan 2 is at least partially filled with liquid.
  • FIG. 2 shows that the outline of the casing 10 follows the outline of the pan 2.
  • the casing also comprises a front por-tion which is of reduced width. This i-s of particular advantage in connection with single acting swinging doors and normal doors because the casing 10 need not be located beneath the frame and no special cutouts are needed therefor.
  • the lever 15 can be made large enough to Itransmit from the power spring 8 a strong closing force without undue stressing of the bearings for the spindle 1.
  • the construction shown in the drawings can be used, without any changes in connection with single a-cting swinging doors which open in a clockwise or counterclockwise direction as well as in connection with double acting swinging doors.
  • the extent of noise which is generated when the check cam 7 moves beyond its dead center position depends to some degree on the area of cooperating faces and surfaces on the spindle 1 and the check cam but particularly on the speed at which the surfaces 25 or 26 of the cam strike against the faces 28 of the spindle.
  • the angular speed of the cam 7 with reference to the spindle 1 depends on the magnitude of forces which act upon the cam at the time it leaves the ⁇ dead center position of FIG, 3, and such forces are reduced in a fully automatic way because the relief valve 47 opens shortly before the piston 43 reaches the end of its stroke so that the pressure prevailing in the chamber of the cylinder is reduced in a fully automatic way and the force necessary to move the cam 7 over the dead center position is furnished exclusively (or nearly exclusively) by the expanding spring 40.
  • the cooperating surfaces 25, 26 and faces 28 are sufficiently large to insure that the check cam 7 is properly and strongly guided and journalled on the spindle.
  • the areas of such surfaces and faces should be large enough to insure that the cam 7 follows all angular movements of the spindle as soon as the faces 23 abut against the faces 25 or 26.
  • the extent of noise also depends to some degree on the configuration of the cams 6 and 7.
  • the configuration of the cams depends on t-he direction of movement of the followers 13, 14, and such movement depends on the mounting of levers 15, 16. It was found that the space in the pan 2 may be utilized with great advantage if the followers 13, 14 and the levers 15, 16 are mounted in a manner as shown in FIG. 2, i.e., that the pivot pin 15a and the point 4where the follower 13 engages the cam 6 are located at the opposite sides of the symmetry plane 33, and also that the pivot pin 38 and the point of engagement between the vfollower 14 and cam 7 are also located at the opposite sides of this symmetry plane.
  • the symmetry planes of the cams 6, 7 are respectively parallel or nearly parallel to the paths in which the axes of the followers 13, 14 move during rotation of the corresponding cams.
  • the symmetry plane 36 is then substantially parallel (but actually tangential) to the flat arc described by the axis 37 of the follower 14 when the latter oscillates about the pin 38 in response to rotation of the check cam 7.
  • the cam 6 and follower 13 This insures that the operation of the door check is the same regardless of the direction in which the door swings yfrom the closed position.
  • .the symmetry plane 36 of the cam 7 passes through the axes of the spindle 1- and follower 14 and makes with the symmetry plane 33 an angle of about 15 degrees. This angle is located at that side of .the plane 33 which faces away from the pivot pin 38 for the lever 16 on which the follower 14 is mounted.
  • a housing containing a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam mounted on the spindle in said housing; a spring-biased follower for tracking and for normally holding said control cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having coop erating portions for determining the extent of relative angular movement therebetween; a second follower for tracking said check cam; and a damper mechanism provided in said housing and operative to bias said second follower against said check cam, said damper mechanism comprising a cylinder member and a piston member one of which is operatively connected with said second follower and the other of which is secured to said housing, said piston member being reciprocable in said cylinder member to respectively expel and draw fluid from said housing, and relief valve means provided in said cylinder member and
  • a housing containing a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam mounted on the spindle in said housing; a spring-biased follower for tracking and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween and said check cam further comprising a lobe having a tip and two flanks located at the opposite sides of said tip; a second follower for tracking said check cam, said second follower engaging the tip of said lobe when the check cam assumes a dead center position and said second follower engaging one of said flanks when the door is closed; and a damper mechanism provided in said housing and operative to bias said second follower against said check cam so that the check cam automatically turns with reference to the
  • a housing a spindle rotatably mounted in and having an end extending from said housing; a control cam mounted on the spindle in said housing; a spring-biased follower for tracking and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween and said check cam further comprising a lobe having a tip and two flanks located at the opposite sides of said tip; a second follower fo.r tracking said check cam, said second follower engaging the tip of said lobe when the check cam assumes a dead center position and said second follower engaging one of said flanks when the door is closed, said portion of said spindle comprising two peripheral faces located substantially diametrically opposite each other and said portion of the check cam comprising two pairs of mutually inclined internal surfaces one pair
  • a housing comprising two substantially mirror symmetrical halves located at the opposite sides of a longitudinally extending symmetry plane; a spindle rotatably mounted in and having an end lextending from said housing, the axis of said spindle being located in said plane at one end of said housing; a control cam mounted on the spindle in said housing; a springbiased follower for tracking and for normally holding said cam in an angular position in which a swinging ldoor connected to fthe end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween, said portion of the spindle comprising two peripheral surfaces located substantially diametrically opposite each other in flat planes which are parallel to the axis of said spindle and said portion of the check cam comprising two pairs of mutually inclined internal surfaces, each pair of internal surfaces being located in two fiat planes parallel with
  • a housing having a pan arranged to accommodate a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam non-rotatably secured to the spindle in said housing; a spring-biased follower for tracking an-d for normally holding said cam in an angular position in which a swinging door connected to the en-d of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween and said check cam having a lobe provided with a tip; a second follower for tracking said check cam and engaging said tip when the check cam is turned by the spindle to assume a dead center position; and a hydraulic damper mechanism provided in said housing and operative to bias said second follower against said check cam with a force which increases when the second follower approaches said tip from either side of said lobe, said damp
  • a housing having -a pan arranged to accommodate a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam nonrotatably secured to the spindle in said housing; a spring-biased follower for tracking and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of rela-tive angular movement therebetween and said check cam having a lob provided with a tip; a second follower for tracking said check cam and engaging said tip when the check cam is turned by the spindle to assume a dead center position; and a hydraulic damper mechanism provided in said housing and operative to bias said second follower against said check cam with a force which increases when the second follower ⁇ approaches said tip from either side of said lobe, said damp
  • said relief valve comprises a reciprocable valve member provided in said passage and having a projection normally extending into said chamber and into the path of said piston, a valve seat provided in said cylinder, and resilient means for biasing said valve member against said valve seat, said piston engaging said projection to move said valve member against the bias of said resilient means so that the liuid may escape through said passage when the second follower engages the tip of said lobe.
  • said resilient means comprises a helical spring which opposes thc fluid pressure in said chamber when the piston is spaced from the projection of said valve member.
  • a housing containing a supply of hydraulic fluid comprising a pair of substantially mirror symmetrical halves located at the oposite sides of a longitudinally extending symmetry plane; a spindle rotatably mounted in and having an end extending from said housing, the axis of said spindle being located in said plane at one end of said housing; a control cam fixed to the spindle in said housing; a first lever pivotally secured to said housing at one side and extending Ito the other side of said plane; a first roller follower mounted on said lever at the other side of said plane; an elongated power spring mounted in said housing for biasing said first follower against and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween; a second lever pivotally secured to
  • a housing comprising a pair of substantially mirror symmetrical halves located at the opposites sides of a longitudinally extending symmetry plane, each of said halves including a side wall; a spindle rotatably mounted in and having an end extending from said housing, the axis of said spindle being located in said plane at one end of said housing; a control cam fixed to the spindle in said housing; a first lever pivotally secured to one of said side walls at one side and extending to the other side of said plane; a rst roller follower mounted on said lever at the other side of said plane; an elongated power spring mounted in said housing for biasing said first follower against and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween; a second
  • each of said cams comprises two mirror symmetrical halves separated from each other by symmetry planes, the symmetry planes of said cams coinciding substantially with the paths of the respective followers when the spindle is located in an axial position in which the door is closed, said followers describing such paths in response to rocking of the respective levers when the cams rotate with said spindle.
  • a structure as set forth in claim 14, wherein said paths are flat curves which are inclined through about l5 degrees with reference to the symmetry plane of said housing and are located at the opposite sides of said last named symmetry plane.
  • a housing containing a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam mounted on the spindle in said housing; a spring-biased follower for tracking and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween and said check cam further comprising a lobe having a tip and two flanks located at the opposite sides of said tip; a second follower for tracking said check cam, said second follower engaging the tip of said lobe when the check cam assumes a dead center position and said second follower engaging one of said flanks when the door is closed, each of said flanks having a iirst portion extending through an angle of about 90 degrees and converging toward the axis of
  • a housing having a pan arranged to accommodate a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control cam non-rotatably secured to the spindle in said housing; a spring-biased follower for tracking and for normally holding said cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle and said check cam having cooperating portions for determining the extent of relative angular movement therebetween and said spindle having a lobe provided with a tip; a second follower for tracking said check cam and engaging said tip when the check cam is turned by the spindle to assume a dead center position; and a hydraulic .damper mechanism provided in said housing and operative to bias said second follower against said check cam with a force which increases when the second follower approaches said tip from either side of said lobe, said damper mechanism
  • a door check comprising a housing containing a supply of hydraulic fluid; a spindle rotatably mounted in and having an end extending from said housing; a control Cam mounted on the spindle in said housing; a power spring mounted in said housing; a foll-ower provided in said housing to track said control cam in response to the bias of said power spring and to normally hold the cam in an angular position in which a swinging door connected to the end of said spindle is closed; a check cam angularly movably mounted on the spindle in said housing, said spindle having at least ⁇ one peripheral face movable into and out of engagement with said check cam to limit relative angular movement between the spindle land the check cam, said check cam having a lobe provided with a tip and a pair -of flanks disposed at the opposite sides of said tip; a second follower engaging one of said flanks when the door is closed and while said peripheral face holds the check cam against relative movement in one direction; and a damper mechanism provided in said

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
US42059264 1963-12-24 1964-12-23 Door check Expired - Lifetime US3273196A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV25084A DE1263543B (de) 1963-12-24 1963-12-24 Schliesser fuer Pendeltueren und Anschlagtueren

Publications (1)

Publication Number Publication Date
US3273196A true US3273196A (en) 1966-09-20

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ID=7581670

Family Applications (1)

Application Number Title Priority Date Filing Date
US42059264 Expired - Lifetime US3273196A (en) 1963-12-24 1964-12-23 Door check

Country Status (8)

Country Link
US (1) US3273196A (de)
AT (2) AT260046B (de)
BE (1) BE657380A (de)
CH (1) CH428486A (de)
DE (1) DE1263543B (de)
DK (1) DK112072B (de)
GB (1) GB1050496A (de)
NL (1) NL144022B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462791A (en) * 1966-11-12 1969-08-26 Ver Baubeschlag Gretsch Co Door closer for swing doors
US3702015A (en) * 1971-10-13 1972-11-07 Bommer Spring Hinge Co Inc Hold open assembly for checking floor hinge
US3760455A (en) * 1969-06-04 1973-09-25 Ver Appliquees Soc Et Door check
US4067084A (en) * 1976-03-03 1978-01-10 Dorma-Baubeschlag G.M.B.H. & Co. K. G. Automatic door closer
US20070186376A1 (en) * 2003-08-22 2007-08-16 Dorma Gmbh + Co. Kg Floor spring
WO2015121271A1 (de) * 2014-02-13 2015-08-20 Hettich-Oni Gmbh & Co. Kg Lageranordnung für eine tür

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535244C3 (de) * 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg Universaltürschließer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1085192A (en) * 1912-05-27 1914-01-27 Standard Mfg Company Door-check.
US2603818A (en) * 1948-04-12 1952-07-22 George W Houlsby Jr Door check mechanism
FR1269893A (fr) * 1960-09-02 1961-08-18 Ver Baubeschlag Gretsch Co Fermeture, en particulier pour portes battantes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB538942A (en) * 1939-11-18 1941-08-22 Safelocks Ltd Improvements in and relating to spring and check devices for doors and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1085192A (en) * 1912-05-27 1914-01-27 Standard Mfg Company Door-check.
US2603818A (en) * 1948-04-12 1952-07-22 George W Houlsby Jr Door check mechanism
FR1269893A (fr) * 1960-09-02 1961-08-18 Ver Baubeschlag Gretsch Co Fermeture, en particulier pour portes battantes

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462791A (en) * 1966-11-12 1969-08-26 Ver Baubeschlag Gretsch Co Door closer for swing doors
US3760455A (en) * 1969-06-04 1973-09-25 Ver Appliquees Soc Et Door check
US3702015A (en) * 1971-10-13 1972-11-07 Bommer Spring Hinge Co Inc Hold open assembly for checking floor hinge
US4067084A (en) * 1976-03-03 1978-01-10 Dorma-Baubeschlag G.M.B.H. & Co. K. G. Automatic door closer
US20070186376A1 (en) * 2003-08-22 2007-08-16 Dorma Gmbh + Co. Kg Floor spring
CN105960500A (zh) * 2014-02-13 2016-09-21 海蒂诗-欧尼有限公司及两合公司 用于门的轴承装置
WO2015121271A1 (de) * 2014-02-13 2015-08-20 Hettich-Oni Gmbh & Co. Kg Lageranordnung für eine tür
KR20160124114A (ko) * 2014-02-13 2016-10-26 헷티히-오니 게엠베하 운트 코. 카게 도어용 베어링 장치
JP2017511848A (ja) * 2014-02-13 2017-04-27 ヘティッヒ−オーエヌイー ゲーエムベーハー ウント ツェーオー．カーゲー ドア用のベアリング装置
US9903146B2 (en) * 2014-02-13 2018-02-27 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door
CN105960500B (zh) * 2014-02-13 2018-05-01 海蒂诗-欧尼有限公司及两合公司 用于门的轴承装置
RU2674189C2 (ru) * 2014-02-13 2018-12-05 ХЕТТИХ-ОНИ ГмбХ унд Ко. КГ Холодильный или морозильный шкаф
AU2015217669B2 (en) * 2014-02-13 2019-01-03 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door

Also Published As

Publication number Publication date
AT265065B (de) 1968-09-25
DE1263543B (de) 1968-03-14
NL144022B (nl) 1974-11-15
BE657380A (de) 1965-04-16
GB1050496A (de) 1900-01-01
CH428486A (de) 1967-01-15
NL6415037A (de) 1965-06-25
AT260046B (de) 1968-02-12
DK112072B (da) 1968-11-04

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