EP0298514B1 - Mechanical door check - Google Patents

Mechanical door check Download PDF

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Publication number
EP0298514B1
EP0298514B1 EP88110973A EP88110973A EP0298514B1 EP 0298514 B1 EP0298514 B1 EP 0298514B1 EP 88110973 A EP88110973 A EP 88110973A EP 88110973 A EP88110973 A EP 88110973A EP 0298514 B1 EP0298514 B1 EP 0298514B1
Authority
EP
European Patent Office
Prior art keywords
door
pivot pin
slider
door check
gear train
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88110973A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0298514A1 (en
Inventor
Makoto C/O K.K. Sankyo Seiki Seisakusho Orii
Katsuhiko C/O K.K. Sankyo Seiki Seisakusho Hayashi
Teruaki C/O K.K. Sankyo Seiki Seisakusho Imai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1987105951U external-priority patent/JPH0450390Y2/ja
Priority claimed from JP30712187A external-priority patent/JPH01151682A/ja
Priority claimed from JP19847287U external-priority patent/JPH01102375U/ja
Priority claimed from JP1903188A external-priority patent/JPH01192977A/ja
Priority claimed from JP63019032A external-priority patent/JPH01192978A/ja
Application filed by Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Publication of EP0298514A1 publication Critical patent/EP0298514A1/en
Application granted granted Critical
Publication of EP0298514B1 publication Critical patent/EP0298514B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E05F3/16—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with friction brakes
    • 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
    • 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
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • 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
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/214—Disengaging means
    • E05Y2201/216—Clutches
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23—Actuation thereof
    • E05Y2201/232—Actuation thereof by automatically acting means
    • E05Y2201/234—Actuation thereof by automatically acting means direction dependent
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23—Actuation thereof
    • E05Y2201/232—Actuation thereof by automatically acting means
    • E05Y2201/242—Actuation thereof by automatically acting means using threshold speed
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/258—Magnetic or electromagnetic friction
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/26—Mechanical friction
    • 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
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/262—Type of motion, e.g. braking
    • E05Y2201/266—Type of motion, e.g. braking rotary
    • 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
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/302—Electronic control of motors during electric motor braking
    • 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 a door check for automatically closing an open door and, more particularly, to a continuous speed change type door check for closing the door at a continuously changing speed.
  • Document US-A-1 918 879 discloses a mechanical door check for closing a door comprising the features of the opening clause of claim 1.
  • This door check is of the dry type, i.e. it does not make use of fluids for cushioning or retarding purposes.
  • the described door check has bulky and voluminous construction.
  • the oil cylinder type door closer establishes the damping effect by the use of the flow resistance of the oil confined in the cylinder so that its damping effect will disperse depending upon the change in the temperature. Specifically, at a high temperature, the viscosity of the oil will drop to reduce the flow resistance so that the door closing speed is accelerated. At a low temperature, on the contrary, the flow resistance is increased to decelerate the door closing speed. As a result, the oil cylinder type door check of the prior art must have its door closing speed adjusted. Another defect of the oil cylinder type is that the confined oil will leak to raise a problem in durability. Since, moreover, there has to be prepared a casing which includes a cylinder capable of enduring high spring force and oil pressure, another problem is that the door check itself must have large size and weight. This heavy weight will make it troublesome to mount the door check.
  • the mechanical door check is freed from the problems of the dispersion in the damping effect accompanying the temperature change and the oil leakage.
  • the overall construction is enlarged because a predetermined speed up ratio cannot be attained unless the number of gears to be interposed between the spring and the governor is large. If the speed up gear train is composed of the multiple spur gears, there arise other problems that the gear train has to be elongated and that the noises of the gears are high when the door is opened or closed.
  • An object of the present invention is to provide a door checker which is freed from the above-mentioned disadvantages.
  • a door check for closing a door which comprises the features as claimed in claim 1.
  • the pivot pin When the door is opened, the pivot pin is rotated to move the slider in the door opening direction thereby to energize the return coil spring. Following the movement of the slider, the transmission gears are rotated. If the door opening operation is released, the slider is moved by the energized force of the return coil spring so that the pivot pin is rotated to close the door. The slider to be moved by the return coil spring rotates the transmission gears. The rotations of the transmission gears will rotate a worm at a high speed through the speed up gear train and the one-way transmission clutch.
  • the brake means applies its braking force to the rotations of the worm and accordingly the braking slider, i.e., the rotations of the pivot pin rotated by the slider so that the closing speed of the door is adjusted.
  • a built-in type door check 1 is constructed of a frame 2, a pivot pin 3 borne rotatably in the frame 1 and having a journal projecting therefrom, and various components to be described hereinafter.
  • the frame 2 is fixedly mounted in a recess which is formed in the upper end portion of a door D (as shown in Fig. 2).
  • a guide rail 4 which has a section of inverted "U".
  • a slider 5a which is pivotally mounted on one end of an arm 5.
  • the other end 5b of this arm 5 is formed with a square hole 5c, through which it is connected to the projecting end of the pivot pin 3.
  • the frame 2 is composed of walls 2a and 2b overlapping each other. These frame walls 2a and 2b are fixed to each other by means of non-shown screws.
  • pivot pin 3 which has its rotating center axis extending vertically.
  • This pivot pin 3 is made of a metal, considering the load to be applied thereto, and is rotatably borne in bearings 9 and 9 which are fixed on the frame 2.
  • the journals 3a and 3b of the pivot pin 3 projecting from the frame 2 are formed into a square shape, and and their former one 3a is fitted in the spare hole 5c of the arm 5 (as shown in Fig. 1).
  • the pivot pin 3 is formed with a tooth portion 3c and a column portion 3d which has a diameter substantially equal to the addendum circle of the tooth portion 3c.
  • this slider 11 is formed with: a rack portion 11a meshing with the tooth portion 3c of the pivot pin 3; a cam portion 11b formed at one end portion thereof for abutting against a later-described transmission member; a non-rack portion 11c for engaging with the column portion 3d of the pivot pin 3 at its position where a spring 12 has been biased; and an engagement portion 11d capable of engaging with a guide 16.
  • a spring seat 11e for receiving one end 12a of the spring 12.
  • a spacer 13 which is made of a synthetic rein to lighten the frictional resistance between the metallic components.
  • the spring 12 is composed of two spring elements which are vertically juxtaposed to each other such that their other ends 12b and 12b are received by a receiving plate 14.
  • This receiving plate 14 in turn is supported by a stay 15 which is fixed on the frame 2.
  • the springs 12 and 12 are so pre-compressed as to bring the latch of the door into engagement.
  • a brake member 17 which is to be brought into abutment against the column portion 3d of the pivot pin 3 when the door is opened a predetermined angle.
  • a transmission member 18 which is formed with a cam portion 18a abutting against the cam portion 11b of the slider 11 and a larger-diameter tooth portion 18b; a speed up gear train 19 for speeding up the movement of the slider 11; a worm shaft 20 meshing with the final gear of the speed up gear train 19; brake means 21 mounted on the worm shaft 20; and clutch means for allowing the brake means 21 the movement of the slider 11 only in the door opening direction.
  • the speed up gear train 19 is composed of the tooth portion 18b of the transmission member 18, a double gear 23, a smaller-diameter gear 24 and a worm wheel 25.
  • gears are arranged in a horizontal direction and borne rotatably by pivot pins 26, 27 and 28 which have their respective two ends caulked to the frame 2.
  • pivot pins 26 and 27 there are rotatably fitted sleeves 26a and 27a which are made of a synthetic resin.
  • the transmission member 18 is made substantially integral with the sleeve 26a. On this sleeve 26a, there is integrally fitted a return lever 29. This lever 29 engages at its leading end 29a with a pin 30, which is anchored at the slider 11, to turn the transmission member 18 clockwise (as viewed in Fig. 10) following the movement of the slider 11 when in the door opening operation, as will be described hereinafter.
  • the return lever 29 may be replaced by a spring for biasing the transmission member 18 (as modified in Fig. 17).
  • the transmission member 18 of the shown embodiment is prepared by laying two pressed plates one on the other and by bringing the notches formed in the inner edges of the center holes of those plates into engagement with the projections 26aa of the sleeve 26a so that the two plates are integrated in the rotating direction.
  • the cam portion 18b abuts against the cam portion 11b of the linearly moving slider 11 and has its abutting point shifted in accordance with the rotational position of the transmission member 18.
  • the abutting point between the cam portion 18a of the transmission member 18 and the cam portion 11b of the slider 11 is located at a distance l from the pivot pin 26 providing the center of rotations of the transmission member 18.
  • the abutting point of the two cam portions 18a and 11b is positioned at a distance l1 ( ⁇ l), as seen from Fig. 8.
  • the abutting position of the two cam portions 18a and 11b is positioned at a distance l2 ( ⁇ l1), as shown in Fig. 10. That is to say, the abutting point of the cam portions 18a and 11b comes the closer to the pivot pin 26 as the opening angle of the door becomes the smaller. In other words, the rotating speed of the transmission member 18 to be pushed by the slider 11 is gradually accelerated the more as the abutting point of the two cam portions comes the closer to the pivot pin 26.
  • the double gear 23 is a speed up gear which is formed with a smaller-diameter tooth portion 23a meshing with the tooth portion 18b of the transmission member 18 and a larger-diameter tooth portion 23b. This tooth portion 23b meshes with a tooth portion 24a of the small gear 24.
  • the small gear 24 and the worm wheel 25 constitute together the clutch means 22.
  • the small gear 24 is formed with a sleeve 24b retaining one end 31a of a coil spring 31 which is wound thereon.
  • the worm wheel 25 has a sleeve 25a enclosing the sleeve 24b and formed with a tooth portion 25b on its outer circumference.
  • the coil spring 31 is biased to expand to contact with the inner circumference of the sleeve 25a while leaving its free and 31b free from the sleeve 25a.
  • the small diameter 24 rotates in the direction of arrow a, the coil spring 31 is wound up to transmit none of the rotations of the sleeve 24b to the sleeve 25a.
  • the clutch means should not be limited to the shown example but may adopt another type if the aforementioned operations are retained.
  • the worm shaft 20 is rotatably borne at its two ends by means of bearings 32 and 33 which are fixed on the frame 2 through shock absorbing members of rubber of the like to reduce the noises.
  • the brake means 21 is composed of: a pair of arms 21d and 21d borne in a rocking manner through pins 21c and 21c by holders 21a and 21b press-fitted on the worm 20; high-friction members 21e and 21e press-fitted on the outer edges of the arms 21d and 21d near the free ends thereof; and a braking ring 21f surrounding the arms 21d and 21d.
  • the ring 21f is fixed in the bearing member 33.
  • the arms 21d and 21d are expanded by the centrifugal force established to bring the high-friction members 21e and 21e into sliding contact with the inner circumference of the ring 21f thereby to brake the rotations of the worm 20.
  • the arms 21d are made of a metal or a material having a mass near that of the metal.
  • the high-friction member 21e is made of rubber or the like, which has a high friction resistance and an excellent wear resistance.
  • the brake means 21 should not be limited to the shown example but may use friction arms made of feathers or friction arms made of elastically deformable rubber, or a variety of governor mechanisms of eddy current electromagnetic or brake shoe types.
  • the door check according to the present embodiment can be made thin, as shown, so that it can be built in a sash door.
  • the door check shown in Figs. 3 and 4 are in the state where the door is opened about 90 degrees, as indicated at DA in Fig. 2.
  • the slider 11 is pushed by the tooth portion 3c of the pivot pin 3 against the elastic force of the springs 12 to have its non-rack portion 11c facing the column portion 3d.
  • the springs 12 are energized to bias the slider 11 in a door closing direction (i.e., leftwardly of Figs. 3 and 4).
  • the cam portion 11b of the slider 11 and the cam portion 18a of the transmission member 18 are in abutment against each other in a position C1 which is at the radius l from the pivot pin 26.
  • the pivot pin 3 has its tooth portion 3c meshing with the rack portion 11a of the slider 11, which is biased by the springs 12 to move in the direction of arrow b (as shown in Fig. 3), so that it is rotated counter-clockwise.
  • the rotations of the pivot pin 3 turn the door through the arm 5 (as shown in Fig. 1) to the door closing position, as indicated at D in Fig. 2.
  • the transmission member 18 having its cam portion 18a abutting against the cam portion 11b of the slider 11 is rotated in the direction of the arrow, as shown in Fig. 8.
  • the rotations of the transmission member 18 are transmitted, as shown in Figs. 3 and 4, through the double gear 23 to the small gear 24 to rotate the small gear 24 in the direction opposite to the arrow a, as shown in Fig. 4.
  • the small gear 24 rotates, its sleeve 24b expands the coil spring 31 to rotate the sleeve 25a together with the worm wheel 25 at a high speed.
  • the clutch means is applied, when the door is to be closed, so that the worm wheel 25 rotates the worm shaft 20 at a high speed.
  • the arms 21d are expanded by the centrifugal force so that the high friction members 21e frictionally slides on the inner circumference of the ring 21f to brake the rotations of the worm shaft 20.
  • This braking force in turn brakes the driving speed up gear train 19.
  • the braking force thus applied to the speed up gear train 19 in turn brakes the rotations of the pivot pin 3 meshing with the slider 11.
  • This braking force in turn brakes the rotations of the door being closed.
  • the braking force of the brake means 21 is released when the arm portions 21 are released from their frictional sliding contact with the ring 21b as the rotations of the worm shaft 20 drop.
  • the braking operation is started. This braking operation is released when the r.p.m. of the worm shaft 20 drops.
  • the door closing speed is continuously changed, as plotted by a solid curve in Fig. 12.
  • This door closing speed i.e., the rotating speed of the pivot pin 3 is determined by the moving speed of the slider 11.
  • the am portion 11b of the slider 11 and the cam portion 18a of the transmission member 18 are in abutment against each other at the position C1 spaced the distance l from the pivot pin 26.
  • the abutting point of those two cam portions are positioned at a point C2 of the distance l1 when the door is closed to the opening angle of 20 degrees.
  • the slider 11 is braked when it is moved in the door closing direction, as has been described hereinbefore.
  • the closing speed of the door from the angle of 90 degrees to an angle of about 20 degrees drop relatively steeply, as seen from Fig. 12.
  • the abutting point between the cam portion 11b of the slider 11 and the cam portion 18a of the transmission member 18 comes the checker to the center of rotations of the transmission member 18 as the door opening angle becomes the smaller.
  • the rotating angle of the transmission member 18 pushed by the slider 11 grows gradually the larger as the door comes the checker to its closed position.
  • the two cam portions 11b and 18a are in abutment against each other at the closest distance l2 from the center of rotations of the transmission member 18.
  • the abutting point of those two cam portions change most abrutply from the position C2 just before the closed position of Fig. 8, in which the opening angle is about 20 degrees, to the closed positions C3 of Fig. 10, to speed up the rotations of the transmission member 18.
  • the rotations of the transmission member 18 thus speeded up are further speeded up through the speed up gear train 19 and transmitted to the worm shaft 20.
  • Figs. 9 and 10 shown the relative positions of the transmission member 18 and the slider 11 when the door is in its completely closed state (as indicated at D in Fig. 2). If the door is opened in this state, the pivot pin 3 is rotated in the direction of arrow to bring the slider meshing with its tooth portion 3c in the rightward or door opening direction, as shown, thereby to energize the springs 12. When the slider 11 is moved, it is followed by the return lever 29 engaging with the pin 30 to rotate the transmission member 18 clockwise. These rotations of the transmission member 18 rotate the speed up gear train 19, but are not transmitted to the worm wheel 25 because the coil spring 31 (as shown in Fig. 3) of the clutch means 22 is wound up. This means that the brake means 21 is inoperative when the door is opened.
  • the pivot pin 3 rotates independently at the non-rack portion 11c of the slider 11, as shown in Fig. 11, so that the door can be stopped at an arbitrary open position.
  • the brake member 17 is in abutment against the circumference of the column portion 3d of the pivot pin 3.
  • the brake member 17 is made of a material such as rubber having high friction and elasticity, it can be pressed and deformed to have its press-fit increased on the pivot pin 3 as the screws 17a and 17a are fastened into the slider 11.
  • the degree of the stopping action upon the door at the arbitrary position can be adjusted by turning the screws 17a.
  • the frame 2 is formed with non-shown inspection holes which are positioned to face the screws 17a.
  • the door DC is rotated from an arbitrary position of an opening angle of 90 degrees or more, as shown in Fig. 2, to the position indicated at DA if it is to be closed. Then, the rack portion 11c of the slider 11 and the tooth portion 3c of the pivot pin 3 come into engagement, as shown in Fig. 3, the slider 11 being biased by the springs 12 then rotates the pivot pin 3 in the direction to close the door.
  • the strengths of the two spring 12 can be made different to insure a balance.
  • Fig. 14 shows the state in which the open door is in the course of its closure with the opening angle of 20 degrees.
  • the cam portion 11b of the slider 11 pushes the cam portion 18a of the transmission member 18, and the push portion 11f begins to push the engagement portion 18c.
  • the rotational angle of the transmission member 18 relative to the displacement of the slider 11 increases with the rotating speed of the worm 20 so that a strong braking force is applied to stop the door in the closed state of Fig. 13.
  • the door is closed more slowly within the opening angle angle of 20 to 0 degrees.
  • Fig. 16 shows still another embodiment in which the transmission member is rotated by the rack of the slider.
  • the pivot pin 3 is borne by a bearing 90, which is held by a bearing holder 91 fixed on the frame.
  • the slider 110 is guided through a spacer 130 by the frame and is in meshing engagement like the foregoing embodiments by the pinion and the rack (although not shown).
  • the slider 110 is formed with a downward rack portion 110B which meshes with a partial tooth portion 180A of a transmission member 180 within an open angle range of 0 to 90 degrees (as can be suitably set).
  • the other partial tooth portion 180B meshes with a double gear 23a of the speed up gear train.
  • the construction thus made can do without the return member (e.g., the lever 29, the pin 30 and so on) of the transmission member.
  • Fig. 17 shows a further embodiment in which the slider is guided by a guide groove.
  • the slider 111 is formed with a rack portion 111a, an end 111b, a rotatable roller 111c and a spring seat 111d.
  • Reference numerals 150 and 151 designates seat receivers; numeral 152 a guide groove fitting the roller 111c therein; and numeral 16 a guide roller.
  • a transmission member 181 is formed with a cam portion 181a and is biased to rotate clockwise by the action of a spring 181b.
  • Figs. 18 and 19 show a further embodiment in which the brake means generates an electric power.
  • the worm 20 fixes a magnet 41, which is enclosed by a yoke 42 fixed to the non-shown frame.
  • a generating oil 43 which constitutes a generator 40.
  • the worm 20 rotates at a high speed when the door is being closed, so that an electromotive force is generated in the coil 43 to brake the door.
  • the electromotive force thus generated can operate a voice generating circuit, an electronic orgel or a spot illuminator.
  • the brake means of the foregoing embodiments and the electric generator may be connected to the worm.
  • Figs. 20 and 21 show a further embodiment in which a speed adjusting function is added to the brake means.
  • the worm 20 is formed with D-shaped cut portions 20a and 20c, a slender portion 20b and a groove 20d.
  • a D-shaped hole 210a of a stopper 210 there are fitted a D-shaped hole 210a of a stopper 210, a friction ring 211 and an adjusting support member 212.
  • a cylindrical portion 213b of a support member 213 is fitted in the slender portion 20b.
  • a D-shaped hole 213c at the upper end is fitted in the D-shaped cut portion 20c so that it is prevented from any rotation.
  • a not-shown stop ring is fitted in the groove 20d such that the cylindrical portion 213b has its leading end pushing the adjusting support member 212.
  • two opposed pins 213a and 212a are attached to the support member 213 and the adjusting support member 212 and are fitted in the support groove 214a and adjusting groove 214b of a metallic weight 214.
  • this weight 214 is made rotatable on the pin 212a.
  • the high friction members 21e are press-fitted in the weight 214.
  • the support groove 214a regulates the position (taken in the worm rotating direction) of the weight 214 through the pin 213a and has a length to allow the rotations of the weight 214 on the pin 212a.
  • the weight 214 is rotated to expand around the pin 212a by the action of the centrifugal force, as the worm 20 is rotated, so that the high friction member 21 comes into sliding contact with the non-shown ring (as indicated at 21f) to establish the braking force.
  • This force is determined by the centrifugal force of the weight 214, which in turn is determined by the position of the fulcrum 212a.
  • the outer circumference 210b of the stopper 210 holds the support member 213 while rotating the outer circumference 212b of the adjusting support member 212.
  • this member 212 Since this member 212 is held on the friction ring 211 by the support member 213, it is allowed to rotate on the worm, if it is rotated by a force stronger than that holding force. Then, the position of the pin 212a in the adjusting groove 214b and accordingly the fulcrum position of the weight 214 are changed. As a result, the centrifugal force is changed to vary the door closing speed.
  • Fig. 21 shows the state of an intermediate speed, which is dropped (with the centrifugal force being increased), if the pin 212a is rotated clockwise, but is increased if counter-clockwise.
  • an inspection hole may be formed in the frame to adjust the speed of the completed product of the door checker.
  • the description has been made assuming that the angle for closing the door automatically is 90 degrees. It should naturally be understood that the present invention be not limited to such angular value.
  • the shown embodiments have been exemplified by the door check of door built-in type, but the present invention may be extended to a door check of external type, which is to be fixed on the surface of a door. Still moreover, the door can be slowly opened by a spring force and can be closed by human hands, if a one-way clutch is operated in the reverse direction or if the pivot pin moves the slider in the door closing direction toward the coil spring.
  • the slider and the transmission member may be interconnected through a link. In case, on the other hand, the door is broken if a strong external force is applied in the door closing direction, overload preventing means such as a torque limitter may be added to the speed up gear train.
  • the present invention it is possible to eliminate the problems such as the oil leakage or the inferior temperature characteristics as in the hydraulic type door check of the prior art.
  • the door check of the present invention can take place of the hydraulic type door check.
  • the door can be lightly opened by the one-way transmission clutch with a variety of additional functions of reduced noises, small thickness, speed change or adjustment or electric power generation.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP88110973A 1987-07-10 1988-07-08 Mechanical door check Expired - Lifetime EP0298514B1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP1987105951U JPH0450390Y2 (ko) 1987-07-10 1987-07-10
JP105951/87U 1987-07-10
JP30712187A JPH01151682A (ja) 1987-12-04 1987-12-04 ドアクローザー
JP307121/87 1987-12-04
JP198472/87U 1987-12-26
JP19847287U JPH01102375U (ko) 1987-12-26 1987-12-26
JP1903188A JPH01192977A (ja) 1988-01-29 1988-01-29 二段制動式ドアクローザー
JP19032/88 1988-01-29
JP19031/88 1988-01-29
JP63019032A JPH01192978A (ja) 1988-01-29 1988-01-29 無段変速ドアクローザー

Publications (2)

Publication Number Publication Date
EP0298514A1 EP0298514A1 (en) 1989-01-11
EP0298514B1 true EP0298514B1 (en) 1991-06-12

Family

ID=27520107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110973A Expired - Lifetime EP0298514B1 (en) 1987-07-10 1988-07-08 Mechanical door check

Country Status (3)

Country Link
EP (1) EP0298514B1 (ko)
KR (1) KR890002514A (ko)
DE (1) DE3863241D1 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047855A1 (en) * 1999-02-10 2000-08-17 Howa Corporation Speed controller for self-closing sliding door
AT502941B1 (de) * 2004-12-28 2011-05-15 Blum Gmbh Julius Stellantrieb zum antrieb einer klappe eines möbels
DE102005002785A1 (de) * 2005-01-20 2006-07-27 Zhejiang Juji Electronic Equipment Co., Ltd., Yueqing Automatische Schliesseinrichtung für Tür
EP1845226A1 (en) * 2006-04-13 2007-10-17 Joseph Talpe, Jr. Closure mechanism
MX2009011565A (es) 2007-04-24 2009-11-10 Yale Security Inc Montaje de cierre de puerta.
AT15281U1 (de) 2008-11-06 2017-04-15 Blum Gmbh Julius Montagesicherung für einen Stellantrieb einer Möbelklappe
GB2479157B (en) * 2010-03-30 2013-07-10 Eco Tread Ltd Door closer
US10641029B2 (en) 2016-06-29 2020-05-05 S Wiley Consulting, Llc. Door control system and methods of operating the same
AT522109A1 (de) * 2019-01-31 2020-08-15 Blum Gmbh Julius Stellantrieb zum Bewegen einer Möbelklappe
SE545566C2 (en) * 2021-09-10 2023-10-24 Assa Abloy Ab Control arrangement for controlling an access member

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1353219A (en) * 1919-12-22 1920-09-21 Thomas E Collins Door check and closer
US1918879A (en) * 1931-02-25 1933-07-18 Welton Jack Dry doorcheck
US2909801A (en) * 1957-07-01 1959-10-27 Oscar C Rixson Company Door closer
DE1175111B (de) * 1959-07-02 1964-07-30 W Schoenberger Dipl Ing Selbsttaetiger Tuerschliesser
US3137888A (en) * 1962-01-11 1964-06-23 Bommer Spring Hinge Co Inc Concealed overhead door closer

Also Published As

Publication number Publication date
KR890002514A (ko) 1989-04-10
EP0298514A1 (en) 1989-01-11
DE3863241D1 (de) 1991-07-18

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