WO2006068005A1 - ドアクローザ - Google Patents
ドアクローザ Download PDFInfo
- Publication number
- WO2006068005A1 WO2006068005A1 PCT/JP2005/022843 JP2005022843W WO2006068005A1 WO 2006068005 A1 WO2006068005 A1 WO 2006068005A1 JP 2005022843 W JP2005022843 W JP 2005022843W WO 2006068005 A1 WO2006068005 A1 WO 2006068005A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- door
- piston
- door closer
- fully closed
- opened
- Prior art date
Links
- 230000005489 elastic deformation Effects 0.000 claims abstract description 36
- 239000003921 oil Substances 0.000 claims description 104
- 230000003014 reinforcing effect Effects 0.000 claims description 80
- 230000007246 mechanism Effects 0.000 claims description 36
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 239000010720 hydraulic oil Substances 0.000 claims description 26
- 230000009194 climbing Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000003416 augmentation Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 241000135194 Pione Species 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- E05F3/04—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
- E05F3/102—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 rack-and-pinion transmission between driving shaft and piston within the closer housing
-
- 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
- E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
-
- 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
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
-
- 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
- E05Y2201/254—Fluid or viscous 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
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/10—Additional functions
- E05Y2800/12—Sealing
-
- 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
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/20—Combinations of elements
- E05Y2800/22—Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs
-
- 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
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/26—Form or shape
- E05Y2800/28—Form or shape tubular, annular
-
- 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 closer that automatically closes a door by the elastic force of an elastic member that is elastically deformed when the door is opened.
- This type of door closer is generally configured to generate a closing force by compressing a spring in a cylinder by a piston when the door is opened and urging the piston when the door is closed by its elastic force.
- Patent Document 1 Japanese Patent Application Laid-Open No. 62-13677
- Patent Document 2 Japanese Utility Model Publication No. 63-195088
- Patent Document 3 Japanese Patent No. 2977527
- Patent Document 4 Japanese Patent No. 3011701
- an object of the present invention is to provide a door closer that can secure a large closing force in a wide section until it is fully closed or just before it, while suppressing an increase in the burden of the opening operation.
- the present invention has been made to solve the above problems, and the door closer according to the present invention.
- a piston that reciprocates in the cylinder according to the opening / closing operation of the door, and elastically deforms according to the movement of the piston in the opening direction when the door is opened, and urges the piston in the closing direction when the door is closed by the elastic force.
- a door closer provided with an elastic member for providing a door with a closing force, and a part of the elastic deformation of the elastic member caused by the opening operation is maintained in the deformed state until the door is fully closed or immediately before the door is fully closed.
- an elastic deformation control means for releasing the deformation state and resetting the elastic member to the initial state before the door opening operation.
- the piston moves in the opening direction (one direction) in the cylinder in accordance with the opening operation, elastically deforms the elastic member, and elastically deforms when the door is closed. Due to the elastic force of the member, the piston moves in the cylinder in the closing direction (the other direction).
- the piston receives an elastic force from the elastic member, so that the door is given a closing force and automatically closes.
- the elastic deformation control means maintains a part of the elastic deformation of the elastic member caused by the opening operation in a deformed state until it is fully closed or just before it is fully closed.
- the elastic deformation control means releases a part of the elastic deformation of the maintained elastic member after the fully closed state and resets the elastic member to the initial state before the door opening operation, so it is necessary for the door opening operation.
- the door can be opened with a relatively light force without requiring a larger opening force.
- the elastic deformation control means is provided with a reinforcing piston in the cylinder separately from the piston, and the reinforcing piston moves when the door is opened to elastically deform the elastic member in cooperation with the piston.
- the control means maintains and releases the elastic deformation of the elastic member due to the movement of the reinforcing piston as a part of the elastic deformation in the deformed state until the door is fully closed or just before the door is fully closed.
- the elastic member is a compression panel that is compressed when the door is opened, and the reinforcing piston compresses the compression panel from the side opposite to the piston.
- the panel is preferable because it is easy to design.
- the panel may be a bow I tension panel that stretches as the piston moves when the door is opened, but it is fixed using a compression panel. If it is configured to be compressed from both sides so that it is sandwiched between the booster piston and the booster piston, it becomes easier to arrange and move the booster piston, compared to when the booster piston compresses the compression panel from the same direction as the piston. Thus, the movement of the boosting piston is less affected by the movement of the piston.
- the elastic deformation control means is provided with a cam as a driving means for the boosting piston when the door is opened. High degree.
- the main shaft and the piston are connected so that the main shaft rotates forward and backward in conjunction with opening and closing of the door and the piston reciprocates in the cylinder as the main shaft rotates.
- the main shaft is provided with a cam and a pinion so that the main shaft rotates.
- the follower member when the door is opened, the follower member is brought into contact with the cam to move the reinforcing piston, and when the door is closed, the driven member is separated from the cam by reverse rotation of the main shaft.
- the cam surface of the cam is provided with a climbing wall portion in which the force for moving the reinforcing piston increases in a stepped manner in the moving section of the reinforcing piston. It is preferable. If the door is opened vigorously under the influence of wind, etc., the door may collide with the surrounding walls, etc. Therefore, the door opening operation can be continued by overcoming the wall from there.
- the elastic deformation control means includes position holding means for holding the reinforcing piston moved at the time of opening the door at the position until the door is fully closed or just before the door is closed.
- the volume of the boosting oil chamber is increased by movement of the boosting piston, and when the door is closed, the volume of the boosting oil chamber is maintained until it is fully closed or just before it is fully closed by the filled hydraulic oil. It is preferable that By providing a boosting oil chamber that increases the volume by moving the boosting piston when the door is opened as the position holding means, the boosting piston can be securely held in that position by the filled hydraulic oil, By removing the filled hydraulic oil from the boost oil chamber, the increased volume can be easily reduced and restored to its original state, and in particular, speed control of the restoration is easy.
- the elastic deformation control means includes a position holding means for holding the reinforcing piston moved at the time of opening the door in the position until the door is fully closed or immediately before the door is closed at the time of closing the door, and the reinforcing piston by the position holding means. It is preferable to provide a resetting mechanism that resets the reinforcing piston to the initial position before the door opening operation by releasing the position holding and resets the elastic member to the initial state before the door opening operation. By operating the reset mechanism, the position holding by the position holding means is released, and the reinforcing piston can easily return to the original position to reset the elastic member to the initial state.
- the reset mechanism is configured so that the time from the start of operation until the elastic member is reset to the initial state before the door opening operation can be adjusted, depending on the frequency of opening and closing of the door, etc. This is preferable because the time can be adjusted.
- the elastic deformation control means includes a cam as a driving means for the reinforcing piston, and the cam is actuated immediately before full closure or immediately before full closure to operate the reset mechanism.
- the use of the cam facilitates the drive control of the boosting piston, and there is an advantage that the degree of freedom in design is high, and since the reset mechanism is operated by the cam, the reset mechanism is separately provided. It is necessary to operate with the mechanism.
- a determination unit that makes it possible to visually recognize whether or not the reset mechanism is activated is provided.
- the timing when the reset mechanism operates is fully closed or just before it is fully closed, but it may vary depending on the shape of the door and the mounting variation. For this reason, the user can visually recognize from the outside whether or not the reset mechanism is operating, thereby preventing the door closer from malfunctioning due to the malfunction of the operation timing.
- the discriminating unit is configured to be withdrawn from the outer surface of the door closer in response to the operation of the reset mechanism.
- the discriminating part can be easily discriminated by touching the discriminating part with the hand even if it is a dark place or an upper part that is difficult to see.
- the reinforcing piston moves to a predetermined section after the door is opened by a predetermined amount from the fully closed state.
- the reinforcement piston may be configured to move from the start of opening the door to the fully closed force.When the door starts to move after the door has been opened from the fully closed position, the user's inertia force increases the user's inertia. The door can be opened with a more natural feeling.
- the door closer includes a door closer main body that is attached to a rotating door and a bracket that is attached to the door frame.
- the door closer main body is provided with a cylinder, and the bracket and the door closer main body are connected via a link mechanism.
- the reinforcing piston moves to a predetermined section after the door is opened at a predetermined angle from the fully closed position.
- the force required for the user to open the door gradually decreases from the beginning of opening, and reaches a substantially constant value at a predetermined opening angle. Converge. Therefore, by moving the reinforcement piston from the point where the opening force is reduced, the influence of the increase in the opening force due to the movement of the enhancement piston can be suppressed as much as possible, and the burden on the user can be reduced.
- an urging means for urging the reinforcing piston in the direction of movement when the door is opened it is preferable that the urging force of the urging means is applied when the reinforcing piston moves when the door is opened. Therefore, the burden of opening the door to the user is reduced.
- the biasing means is weaker than the elastic member.
- FIG. 1 is a front view showing an attached state of a door closer according to an embodiment of the present invention.
- FIG. 2 A plan view of the door closer attached with (a) in a fully closed state, (b) Indicates a slightly opened state from a fully closed state.
- FIG. 3 A plan view showing the door closer attached, (a) is a state where the door is further opened from the state of Fig. 2 (b) and the door is opened to nearly 90 °, and (b) is a state (a). It shows a state where the door is opened further than 90 ° and opened beyond 90 °.
- FIG. 10 is a cross-sectional view taken along line AA in FIG.
- FIG. 12 is a cross-sectional view taken along the line BB in FIG.
- FIG. 19 Shows the state when the door is closed with the door open at an angle corresponding to the rotation of the spindle by 74 ° based on the state shown in Fig. 14.
- FIG. 20 Shows the state when the door is closed with the door open at an angle corresponding to the rotation of the spindle by 14 °, based on the state of Fig. 14.
- FIG. 21 is a cross-sectional view of relevant parts corresponding to FIG. 14 and shows a state at the moment when it is fully closed.
- FIG.22 The relationship between the opening and closing force and the door opening angle when the door closer body 1 is attached to a rotating door.
- (A) shows the door closer and
- (b) shows the conventional door closing angle. Indicates the case of a door closer.
- FIG. 23 is a cross-sectional view of a main part of a door closer according to another embodiment of the present invention, where (a) shows a state where the reset valve is not operating, and (b) shows a state where the reset valve is operating. Show.
- FIG. 24 is a cross-sectional view of the principal part seen from the plane of the door closer according to another embodiment of the present invention, showing the state of the door opening operation.
- FIG. 25 is a cross-sectional view of a main part when viewed from the plane of a door closer according to another embodiment of the present invention.
- FIG. 26 is a cross-sectional view of the main part when viewed from the plane of the door closer according to another embodiment of the present invention.
- FIG. 27 is a cross-sectional view of the main part seen from the plane of the door closer according to another embodiment of the present invention, showing the state of the door opening operation.
- FIG. 28 is a cross-sectional view including a partial break line of a component used in a door closer according to another embodiment of the present invention.
- FIG. 29 is a cross-sectional view of a principal part as seen from a plane in a use state of a door closer according to another embodiment of the present invention.
- FIG. 30 is a cross-sectional view of the main part when viewed from the front in the usage state of the door closer.
- Adjusting bush, 110 Cam surface, 110a ... Minimum diameter part, 110b ... Enhanced diameter part, 110c ... Stepped portion 110d: Overpassing wall portion 120 ... Connecting portion 121 ... First head portion 122 ... Second head portion 123 ... Roller 124 ... Pin 125 ... Coupling 126 ... Pin 127 ... No Cuck-up ring, 1 28... Seal member
- FIGS. 1 to 22 An embodiment of a door closer according to the present invention will be described with reference to FIGS. 1 to 22.
- the door closer according to the present embodiment is applied to the rotating door D.
- the door closer main body 1 is attached to the door D and generates a closing force on the door D, and the door.
- a bracket 2 attached to the frame W and a link mechanism that pivotally connects the door closer body 1 and the bracket 2 are provided.
- the door closer body 1 is connected to the cylinder 3 filled with hydraulic oil and the bracket 2 via a link mechanism.
- a main shaft 4 that rotates in conjunction with the opening and closing of the main shaft 4, a piston 7 that is connected to the main shaft 4 via a rack 5 and a pinion 6 and reciprocates in the cylinder 3 as the main shaft 4 rotates forward and backward,
- the piston 7 is urged to the opposite side (door closing direction) to close the door D via the spindle 4 to the door D.
- Panels 8 and 9 (elastic members) for attaching mosquitoes are provided.
- the door closer in the present embodiment further deforms a part of the elastic deformation of the panels 8 and 9 caused by the opening operation until the door is fully closed or just before the door is fully closed. It is equipped with elastic deformation control means that maintains the state and then releases the deformation state and resets the panels 8 and 9 to the initial state before the opening operation.
- the elastic deformation control means is provided in the cylinder 3 separately from the piston 7 and cooperates with the piston 7 when the door is opened to elastically deform the vanes 8 and 9, and the reinforcing piston 10 and A cam 11 as a driving means for moving the boosting piston 10 when the door is opened, and a position holding means for holding the boosting piston 10 moved when the door is opened at the position until it is fully closed or just before it is fully closed And opening the reinforcing piston 10 by releasing the position holding of the reinforcing piston 10 by the position holding means. Equipped with a reset mechanism that resets the panel 8 and 9 to the initial state before opening and resets to the initial state before opening the door. This will be specifically described below.
- the door closer body 1 and the bracket 2 are connected by a link mechanism having two links 12 and 13. That is, one end of the first link 12 is pivotally attached to the bracket 2, the other end of the first link 12 is pivotally attached to one end of the second link 13, and the other end of the second link 13 is The other end of the second link 13 is fixed so that it can rotate integrally with the upper end 4a of the main shaft 4 provided on the door closer 1 as shown in FIG. The main shaft 4 and the second link 13 rotate together. The length of the first link 12 can be adjusted. Then, when the door closer body 1 and the bracket 2 are attached to the door D and the door frame W, respectively, the first link 12 and the second link 13 as shown in Fig.
- Fig. 2 (a) in the fully closed state.
- the angle between is small and the behavior changes from Fig. 2 (b) to Fig. 3 (b) as the door opens.
- the angle between the first link 12 and the second link 13 gradually increases.
- the second link 13 rotates relative to the door closer body 1 around the main shaft 4 in a counterclockwise direction in plan view.
- Fig. 2 (b) shows the force when the door D is opened by about 15 ° .
- the first link 12 hardly rotates until the door D is opened by about 15 °.
- the door closer body 1 is configured to be attached to the door via the mounting plate 14, and the cylinder 3 having a circular cross section is formed on the front side of the mounting plate 14.
- the cylinder 3 is sealed by closing both end portions of the through-holes penetrating the housing 15 of the door closer body 1 in the longitudinal direction (horizontal direction) with end plugs 16 and 17, respectively. Filled with oil.
- a piston 7, a rack bar 18, springs 8 and 9, and a reinforcing piston 10 are arranged as shown in FIGS. 4, 5, 8, and 9.
- the piston 7 is urged by the springs 8 and 9 so that one end plug 16 It is in the state which contact
- the first oil chamber 21 having a predetermined volume is formed between the one end plug 16 and the piston 7 even in the state of force and contact.
- a concave portion is formed at the center of the inner surface of one end plug 16, and the piston 7 and one end plug 16 come into contact with each other at their peripheral portions. Accordingly, a first oil chamber 21 corresponding to the volume of the recess of one end plug 16 is formed between the piston 7 and one end plug 16.
- the piston 7 and the rack bar 18 are connected to each other by a pin 19. Specifically, one end of the rack bar 18 is connected to the piston 7, and the rack bar 18 extends from the piston 7 to the other end plug 17 side.
- the rack rod 18 has a columnar shape at one end and a semicircular shape at the other end, and a rack 5 is formed on the plane side of the predetermined region on the other end. Since the pinion 6 of the main shaft 4 is engaged with the rack 5, the rack rod 18 moves in the cylinder 3 in the axial direction by the rotation of the main shaft 4. That is, when the door is opened, the spindle 4 rotates counterclockwise (forward rotation) in FIG. 9, and the rack bar 18 moves to the right. Conversely, when the door is closed, the spindle 4 rotates (reverses) clockwise in the figure, and the rack bar 18 moves to the left. Thus, the rack bar 18 reciprocates in the cylinder 3 in conjunction with the opening and closing of the door.
- the main shaft 4 extends in the vertical direction and is a force orthogonal to the cylinder 3.
- the main shaft 4 is connected to the door closer body 1 through a pair of upper and lower pinion bushes 24 and bearings 25 (bearings).
- the housing 15 is rotatably supported.
- the upper end 4a of the main shaft 4 protrudes upward from the door closer body 1, and the second link 13 is attached to the upper end 4a.
- seal members 26a and 26b are provided as shown in FIG. 10 so that the hydraulic oil in the cylinder 3 does not leak.
- a pinion 6 is formed in the central portion of the main shaft 4.
- a pair of upper and lower cams 11 are mounted on the main shaft 4 so as to rotate at intervals in the vertical direction.
- the two cams 11 are integrated with the main shaft 4 by the teeth 11a formed at the center thereof engaging the upper and lower ends of the pinion 6, respectively. 5 is located.
- a washer 27 is interposed between the cam 11 and the bearing 25. The force with which a cam surface 110 having a predetermined shape is formed on the outer peripheral surface of the cam 11 will be described later.
- the cylinder 3 has a force defined by the piston 7.
- Panels 8 and 9 are inserted on the opposite side of the first oil chamber 21 with respect to the piston 7.
- the springs 8 and 9 are compression panels and this embodiment In this state, two inner and outer coil panels are used, and the inner spring 9 is weaker than the outer spring 8, and both are located between the piston 7 and the reinforcing piston 10.
- the rack bar 18 passes through the springs 8 and 9.
- the reinforcing piston 10 is positioned between the springs 8 and 9 and the other end plug 17. As shown in FIG. 7, the reinforcing piston 10 is connected in the axial direction so as to connect the first and second head portions 121 and 122 positioned at both ends in the axial direction and the head portions 121 and 122 spaced apart by a predetermined distance. And a connecting portion 120 extending in the direction.
- the spindle 4 is located between the head parts 121 and 122.
- the two head portions 121 and 122 as a whole have a columnar shape with a predetermined length, and a through hole 121a penetrating in the axial direction is formed in the center of the first head portion 121 as shown in FIG.
- the other end portion side of the rack bar 18 passes therethrough.
- first head portion 121 is cut slightly flat.
- first head portion 121 is provided with a pair of upper and lower rollers 123 (driven members).
- the two rollers 123 are pivotally supported by pins 124 extending in the vertical direction, and are respectively positioned above and below the through hole 121a. Then, the roller 123 slightly protrudes from the force notch 121b accommodated in the horizontal notch 121b to the second head 122 side as shown in FIG. And abuts against the cam surface 110 of the cam 11. Further, since the side of the notch 121b is also opened, the roller 123 can contact the cam surface 110 of the cam 11 through the opening (see FIGS. 14 and 15).
- the connecting portion 120 extends from the first head portion 121 to the second head portion 122 side in a rod shape 120a and from the second head portion 122 to the first head portion 121 side. It consists of a crescent-shaped extended part 120b.
- the connecting portion 120 has a concave curved surface 120c corresponding to the arc-shaped outer peripheral surface of the rack bar 18 on the inner side.
- a plurality of rollers 125 are rotatably disposed on the rod-shaped portion 120a of the connecting portion 120 via pins 126, and the rollers 125 abut against the outer peripheral surface of the rack rod 18 and rotate to prevent the rack rod 18 from moving. Reduce frictional resistance.
- three rollers 125 are provided at intervals in the axial direction.
- a backup ring 127 and a seal member 128 are attached to the outer peripheral surface of the second head portion 122 to ensure a sealing property between the inner surface of the cylinder 3 and the cylinder 3 includes the piston 7 and the other end plug 17.
- the second oil chamber 22 is between the piston 7 and the second head portion 122 of the boosting piston 10
- the third oil chamber 23 is between the second head portion 122 and the other end plug 17.
- a recess is also formed on the inner surface of the other end plug 17, so that the other end plug 17 and the second head portion 122 abut on the outer peripheral portion.
- a projection 122a having a smaller diameter than the recess of the other end plug 17 is formed on the outer surface of the second head portion 122, and the projection 122a is located in the recess, so that the second head 122 is in the other end.
- the volume of the third oil chamber 23 is smaller than the volume of the recess in a state where it abuts against the end plug 17.
- the third oil chamber 23 is a boosting oil chamber as a position holding means for holding the boosting piston 10 moved when the door is opened in the position until it is fully closed or just before the door is closed.
- the piston 7 is formed with an oil passage 70 penetrating in the axial direction, and the oil passage 70 is provided with a check valve 71.
- the oil passage 70 is located at the center of the piston 7. Therefore, when the piston 7 moves to the right side when the door is opened, the hydraulic oil in the second oil chamber 22 flows to the first oil chamber 21 via the oil passage 70 of the piston 7.
- the housing 15 of the door closer body 1 is formed with an oil passage 72 for communicating the first oil chamber 21 and the second oil chamber 22 as shown in FIG.
- the hydraulic oil flows from the first oil chamber 21 to the second oil chamber 22 via the oil passage 72 of the housing 15. Since the speed adjusting valve 73 is provided in the oil passage 72, the door closing speed can be adjusted by adjusting the flow rate of the oil passage 72 by the speed adjusting valve 73.
- an oil passage 74 penetrating in the axial direction is formed at the second head portion 122 of the reinforcing piston 10, specifically, at the center thereof.
- a check valve 75 is also provided.
- the check valve 75 is urged in a direction to close the oil passage 74 by a valve panel 76 (urging member).
- a valve panel 76 urging member
- the reset mechanism flows hydraulic oil from the third oil chamber 23, specifically, the second oil chamber.
- an oil passage 7 7 that communicates the second oil chamber 22 and the third oil chamber 23 formed in the housing 15, and A reset valve 78 provided in the oil passage 77 to open and close the oil passage 77 is provided. Normally, the reset valve 78 closes the oil passage 77.
- the reset valve 78 is normally in a state in which the tip 78a of the reset valve 78 projects from the inside of the housing 15 into the cam housing chamber 80 by the valve spring 79 (biasing member).
- the valve spring 79 biasing member
- FIG. 21 when the cam surface 110 of the cam 11 moves (actuates) the reset valve 78 in the fully closed state, the oil passage 77 is in communication and the third oil chamber 23 to the second oil chamber 22 is reached. And hydraulic oil flows. Specifically, as shown in FIG.
- the cam surface 110 force S abuts against the tip 78a of the reset valve 78 and pushes the reset valve 78 into the housing 15 against the biasing force of the valve spring 79 (however, As a result, the oil passage 77 closed by the reset valve 78 is opened and hydraulic oil flows.
- the oil passage 77 is further provided with a reset adjustment valve 81.
- the flow rate when the oil passage 77 is opened when the reset valve 78 is activated. Can be adjusted. That is, the time required for the third oil chamber 23 to return the increased volume to the original state can be adjusted by the reset control valve 81.
- the reset valve 78 is again protruded by the valve panel 79 and closes the oil passage 77.
- the state in which the door closer body 1 is attached to the fully closed door is the state shown in FIG. 14, and the main shaft 4 is slightly rotated counterclockwise from the state shown in FIG. Moves to the right by a predetermined amount and moves away from one end plug 16, and the springs 8 and 9 are slightly compressed in accordance with the amount of movement of the piston 7 to the right.
- the cam 11 also rotates integrally with the main shaft 4.
- the minimum diameter portion 110a remains in contact with the force roller 123. Therefore, the reinforcing piston 10 remains in the initial position, and the second head portion 122 is also in the other position. It remains in contact with the other end plug 17. Further, the reset valve 78 remains in contact with the cam surface 110, and although the amount pushed is smaller than that in FIG.
- the oil passage 77 is still open.
- the reason why the piston 7 is slightly moved to the right side in the state where the door closer body 1 is attached to the fully closed door is to cause a predetermined closing force when fully closed. Therefore, it is possible to prevent the door from being inadvertently opened and to ensure airtightness. If the position of the spindle 4 and the cam 11 in the state shown in FIG. 13 is set to 0 ° as a reference, the state shown in FIG. 14 is, for example, 16 ° rotated counterclockwise, and the door is fully closed. The angle is at 0 °. This 16 ° value is set according to the conditions such as the installation location.
- the state of FIG. 15 is a state in which the main shaft 4 is rotated by 14 ° from the state of FIG. 14, that is, the door is opened from the fully closed state by an angle corresponding to the rotation of the main shaft 4 by 14 °.
- the piston 7 moves to the right, compressing the springs 8 and 9 by that amount. Since the roller 123 of the boosting piston 10 is still in contact with the minimum diameter portion 110a, the boosting piston 10 has not moved, and the third oil chamber 23 remains minimum. However, since the cam surface 110 is separated from the reset valve 78, the reset valve 78 protrudes into the cam housing chamber 80, and therefore the oil passage 77 is closed. Then, after the state shown in FIG. 15, the roller 123 of the reinforcing piston 10 moves the contact portion from the minimum diameter portion 110a of the cam surface 110 to the increasing diameter portion 11 Ob side.
- the minimum diameter portion 110a has a constant diameter, but this increased diameter portion 110b is a region where the diameter gradually increases.
- the check valve 75 of the boosting piston 10 receives pressure from the second oil chamber 22 and stakes it to the urging force of the valve panel 76 and moves to the right side. Open the oil passage 74 of the head part 122. Therefore, the hydraulic oil flows from the second oil chamber 22 to the third oil chamber 23 through the oil passage 74 of the second head portion 122. Further, the reinforcing piston 10 compresses the springs 8 and 9 by pressing the springs 8 and 9 from the side opposite to the piston 7 by the first head portion 121. As described above, the amount of movement of the piston 7 is proportional to the rotation of the main shaft 4, that is, the door opening angle.
- the compression amount of the springs 8 and 9 by this piston 7 alone is proportional to the force S and the reinforcing piston 10 is When moved to the left, the panels 8 and 9 are also compressed by the movement of the reinforcing piston 10. That is, while the roller 123 is in contact with the increased diameter portion 110b of the cam surface 110 (between FIGS. 15 to 18), the springs 8 and 9 are compressed by the piston 7 and the increasing piston 10 from both sides. Therefore, the degree of increase in the compression amount (elastic deformation amount) of the panels 8 and 9 is larger than the time when the roller 123 is in contact with the minimum diameter portion 110a of the cam surface 110 (the period in which only the piston 7 is compressed). Is also big.
- the degree of increase in the compression amount of the panels 8 and 9 while the roller 123 is in contact with the main reinforcing region of the reinforcing diameter portion 110b of the cam surface 110 is proportional (however, The proportionality coefficient may be larger than that during contact with the minimum diameter portion 110a), but in the present embodiment, the proportional coefficient is set so as to increase at an accelerated rate.
- the increase in the first half of the period (30 °) is large, and the increase in the second half (30 °) of Figures 16 to 17 is smaller.
- the volume of the third oil chamber 23 is increased at once by moving the boosting piston 10 to the left at a time in the main enhancement region, but if there is a slight amount of air in the third oil chamber 23, Air may be compressed by pressure. Therefore, after injecting the hydraulic oil into the third oil chamber 23 at a time in the main augmentation region, the augmentation piston 10 is moved slightly to the left in the secondary augmentation region, so that the inside of the third oil chamber 23 The air compression is compensated.
- the roller 123 immediately separates from the cam surface 110 when the door starts to close from the state shown in FIG. 18, the resistance caused by the contact of the roller 123 with the cam surface 110 does not occur when the door is closed. It will be.
- the door 4 In the rotated state, the door 4 is closed so that the spindle 4 in Fig. 20 has rotated 14 ° from the fully closed position.
- the piston 7 gradually moves to the left side due to the elastic force of the springs 8 and 9, but the hydraulic oil is transferred from the first oil chamber 21 to the second oil chamber 22 through the oil passage 72 in the housing 15.
- the first oil chamber 21 gradually decreases.
- the flow rate of the oil passage 72 at this time can be adjusted by the speed adjustment valve 73, and thus the closing speed can also be adjusted.
- the reset valve 78 does not come into contact with the cam surface 110 and protrudes into the force housing chamber 80 as shown in FIG. Is closed. For this reason, the inflow of hydraulic oil from the third oil chamber 23 to the second oil chamber 22 is blocked, and the third oil chamber 23 maintains its increased volume. As the third oil chamber 23 maintains its state, the boosting piston 10 cannot move to the left side. Therefore, the cam surface 110 is separated from the roller 123, and the compression amount of the panels 8 and 9 by the reinforcing piston 10 is maintained as it is. That is, from FIG. 18 to FIG. 20, the compression amount of the springs 8 and 9 by the piston 7 decreases in proportion to the closing operation, but the reinforcing piston 10 maintains its position by the third oil chamber 23.
- the compression of the panels 8 and 9 by the reinforcing piston 10 does not decrease and remains constant. Therefore, the closing operation is performed while the compression amount of the springs 8 and 9 is kept larger by the compression amount by the boosting piston 10 compared to the piston 7 alone, and the closing door is larger than that of the piston 7 alone. Power is obtained.
- the reset flow control valve 81 is provided in the oil passage 77 of the housing 15 and the flow rate of the hydraulic oil is adjusted, so that the hydraulic oil gradually flows out from the third oil chamber 23, and the boosting piston 10 Will gradually move to the right. Then, the springs 8, 9 and the reinforcing piston 10 return to the initial state before the door opening operation as shown in FIG. Note that the flow rate of the hydraulic oil from the third oil chamber 23 can be adjusted by the reset control valve 81, as shown in FIG.
- the time required from the time when the fully closed state is reset to the initial state of FIG. 14 can be set to about 2 to 3 seconds, for example, but can be set longer or shorter than this.
- the compression due to the movement of the reinforcing piston 10 is completely closed when the door is closed.
- the door closing force is larger than when the panels 8 and 9 are compressed with only the piston 7 without the piston 10 for reinforcement.
- the closing force increased by the reinforcing piston 10 continues to act in a wide range until the fully closed state. Therefore, unlike the conventional case that generates a large closing force only when closing, the door does not close due to the influence of wind at a large opening angle, and it can be surely closed until it is fully closed. .
- the piston 10 for reinforcement is provided separately from the piston 7 and the structure for maintaining the compressive deformation of the panels 8 and 9 corresponding to the movement of the piston 10 for enhancement is generated.
- Part (S) of the compression deformation (L + S- M) of panels 8 and 9 can be easily maintained.
- the volume of the third oil chamber 23 is increased by moving the augmenting piston 10 to the left side, and the volume of the third oil chamber 23 is maintained by preventing the hydraulic oil from flowing out by the reset valve 78. Therefore, it is possible to maintain a part of the compression deformation of the panels 8 and 9 with a simple configuration using hydraulic oil, and when the reset force is reset, the hydraulic oil is supplied to the third oil chamber by the operation of the reset valve 78.
- the mechanism for resetting to the initial state can be made extremely simple and reliable. Since the reinforcement piston 10 is moved by the cam surface 110 of the cam 11 rotating integrally with the main shaft 4, the movement control is easy. That is, by changing the shape of the cam surface 110 in various ways, it is possible to set various amounts of movement and timing of the enhancement piston 10. In addition, since the cam 11 is integrated with the main shaft 4, the phase of the pinion 6 and the cam surface 110 can be adjusted reliably, and the movement of the piston 7 and the movement of the boosting piston 10 can be reliably linked. it can. Furthermore, since the reset valve 78 is automatically pressed and operated by the return operation of the cam surface 110, a separate mechanism for operating the reset valve 78 is unnecessary, and the force is also reduced.
- the operation timing of the reset valve 78 can be designed easily in conjunction with the movement of the boosting piston 10.
- the force S that activates the reset valve 78 at the fully closed timing for example, fully closed
- the reset valve 78 may be operated such that the stepped portion 110c of the cam surface 110 contacts the reset valve 78 at the immediately preceding timing.
- the reset control valve 81 by operating the reset control valve 81, the time from the start of the operation of the reset valve 78 to the reset to the initial state before the door opening operation can be easily adjusted.
- the fully closed cover is particularly effective in the door closer using the link mechanism because the reinforcing piston 10 operates after the door has opened a predetermined angle. That is, in a configuration in which the bracket 2 and the door closer body 1 are connected to each other through a link mechanism used for a rotating door, the force that must be applied to the door for the opening operation is usually fully closed. Gradually decreases from the predetermined opening angle, and the degree of decrease decreases from the predetermined opening angle and converges to a substantially constant force. The required degree of force reduction is the largest in the range of the predetermined angle from the fully closed position.
- FIG. 22 shows the case of the conventional configuration in which FIG. 22 (b) compresses only with the piston 7, and FIG. 22 (a) shows the case of the configuration of the present embodiment.
- the opening force and closing force are both plotted as the force acting on the door. In the configuration where panels 8 and 9 are compressed using only piston 7, as shown in Fig.
- the opening force decreases greatly from the beginning of opening to a predetermined angle and converges to a substantially constant opening force (line T2 )
- the closing force is lower than the opening force due to mechanical loss such as frictional resistance (line C2).
- the increased maximum value indicates the opening force required at the start of opening the door. Don't exceed it.
- the spindle 4 is rotated 14 ° from the fully closed state.
- the section between the main shaft 4 rotated by 74 ° from the fully closed state is the main reinforcing diameter portion 110b, and the reinforcing piston 10 is moved to the left at a stretch in the first half (14 ° force is also 44 °).
- the conventional door opening force is indicated by a two-dot chain line (line T2).
- the change in the closing force at the time of closing is not different from the conventional one, but its absolute value is larger than the conventional one. This is because the compression by the boosting piston 10 is maintained when the door is closed, and the same closing force as that obtained by changing the springs 8 and 9 to a stronger one can be obtained. In this way, it is possible to obtain a large door closing force while suppressing an increase in burden when the door is opened.
- a determination unit that makes it possible to visually recognize whether or not the reset valve 78 is activated may be provided based on the external force of the door closer body 1.
- the base end portion 78b of the reset valve 78 is extended so as to pass through the adjustment bushing 82.
- the tip 78a of the reset valve 78 is not pushed by the cam 11, and the reset valve 78 receives the urging force of the valve spring 79 and protrudes into the cam housing chamber 80.
- the base end portion 78b of the reset valve 78 does not protrude outward from the adjustment bushing 82.
- FIG. 23 (a) the tip 78a of the reset valve 78 is not pushed by the cam 11, and the reset valve 78 receives the urging force of the valve spring 79 and protrudes into the cam housing chamber 80.
- the base end portion 78b of the reset valve 78 does not protrude outward from the adjustment bushing 82.
- the tip 78a of the reset valve 78 is pushed by the cam 11, and the reset valve 78 is pushed against the urging force of the valve panel 79, and the reset valve 78 is activated.
- the base end portion 78b of the reset valve 78 protrudes outward from the adjusting bush 82 by a predetermined amount.
- the user can determine whether the reset valve 78 is operated depending on whether or not the base end portion 78b of the reset valve 78 protrudes outward from the end face of the adjustment bushing 82, with the base end portion 78b of the reset valve 78 serving as a determination unit. The presence or absence can be determined.
- the timing at which the reset valve 78 is actuated is preferably fully closed or just before it is fully closed.
- the timing at which the reset valve 78 is actuated may vary depending on variations in the shape and installation of the door. In such a case, if the presence / absence of the operation of the reset valve 78 can be visually recognized from the outside by moving the base 78b of the reset valve 78, the user can surely know the operation timing of the reset valve 78, It is possible to prevent malfunction of the door closer.
- the base end portion 78b of the reset valve 78 is not limited to the case where the base end portion 78b of the reset valve 78 protrudes outward from the end surface of the adjustment bushing 82, and the base end portion 78b of the reset valve 78 protrudes from the outer surface of the door closer body 1. Then, the user can easily determine whether or not the reset valve 78 is activated similarly. Also, The configuration of the discriminating portion is not limited to the base end portion 78b of the reset valve 78, and may be anything that can be moved out of the outer surface of the door closer body 1 in conjunction with the sliding movement of the reset valve 78, for example, different from the reset valve 78.
- the interlocking structure is simplified by integrating with the reset valve 78 like the base end portion 78b of the reset valve 78.
- the configuration is not limited to the configuration in which the determination unit moves out of the outer surface of the door closer body 1, and any configuration that works in conjunction with the reset valve 78 and whose behavior is visible from the outside is sufficient. Therefore, in addition to mechanically interlocking the reset valve 78 and the determining unit, an electrically interlocked configuration may be used. In any case, by providing a determination unit that interlocks with the reset valve 78 so that the operation of the reset valve 78 can be visually recognized from the outside by the determination unit, the user can determine the operation timing of the reset valve 78.
- an urging means for urging the reinforcing piston 10 in the direction of movement may be provided to assist the movement of the reinforcing piston 10 in the opening operation.
- an auxiliary panel 40 compression coil panel
- a biasing means By inserting the auxiliary spring 40 into the third oil chamber 23 in this way, the elastic force of the auxiliary panel 40 is increased when the reinforcing piston 10 is moved by the cam 11 during the opening operation. The reinforcing piston 10 moves to the left side easily.
- the springs 8 and 9 compressed by the piston 7 can be variously changed, and two large and small coaxially are provided between the piston 7 and the reinforcing piston 10 as in the above embodiment.
- the panel can be three or more or vice versa.
- a panel 41 is provided between the piston 7 and the first head portion 121 of the reinforcement piston 10, and the tip of the rack bar 18 and the second head of the reinforcement piston 10 are provided.
- the spring 42 may be provided between the head portion 122 and the head portion 122.
- the rack bar 18 and the panel 43 may be arranged in parallel, that is, in a non-coaxial arrangement. As described above, the number, strength, arrangement, shape, configuration, and the like of the panel compressed by the pinion 6 can be appropriately changed.
- the shape of the cam surface 110 of the cam 11 can be variously changed.
- a climbing wall portion 110d in which the force for moving the boosting piston 10 increases stepwise is provided on the reinforcing diameter portion 110b of the cam surface 110, which is the moving section of the boosting piston 10.
- the incorporation of the cam 11 into the main shaft 4 can also be changed.
- the cam 11 is connected to the main shaft 4 by incorporating the pair of upper and lower cams 11 into the main shaft 4 and engaging with the pinion 6.
- the fixing member 44 is positioned between the upper and lower cams 11, and the upper and lower cams 11 are fixed to the fixing member 44 by screws or the like. Preferably, it may be detachably fixed. In this way, by fixing the fixing member 44 to the main shaft 4 and connecting the upper and lower cams 11 by the fixing member 44, the cam 11 and the main shaft 4 can be more firmly integrated, and the cam when the main shaft 4 rotates.
- the boosting piston 10 can be moved accurately and smoothly.
- the main shaft 4 and the cam 11 may be integrally formed by molding.
- the cam 11 is arranged up and down, the shape, configuration, arrangement, etc. of the cam 11 may be changed in various ways.
- a single cam 11 is provided at the substantially central portion of the pinion 6 and a single roller 123 that contacts the cam 11 may be used.
- a notch for avoiding the cam 11 is formed along the axial direction of the rack bar 18 in the substantially central portion of the rack 5, and the cam 11 is straddled with the rack 5 up and down, and the upper and lower portions are the upper and lower portions of the pinion 6.
- the cam 11 to control the movement of the boosting piston 10, there is an advantage that it can be accurately controlled with a simple mechanism.
- the reinforcing piston 10 is moved on the cam surface 110, while when the door is closed, the position of the reinforcing piston 10 is maintained and the cam 11 rotates in the opposite direction to that when the door is opened.
- the roller 123 as a driven member is separated from 110, and unnecessary mechanical loss such as frictional resistance when the door is closed can be suppressed.
- the door closer body 1 can also be applied to a so-called floor hinge. That is, it is a configuration in which a closing door is directly attached from the main shaft 4 to the central axis of the rotating door.
- the door closer body 1 can be installed in the door.
- the door closer body 1 is inserted into the installation recess F1 provided on the floor surface F, and the bolt 45 is used as a tension member between the wall surface F2 of the installation recess F1 and the outer surface of the door closer body 1. Since the bolt 45 is screwed to the outer surface of the door closer body 1 and protrudes to the side, the door closer body 1 can be easily installed by adjusting the protruding amount by tightening and loosening the bolt 45. Can be fixed.
- the force may be configured such that the reinforcing piston 10 is moved only in a predetermined section of the entire opening operation section.
- the reinforcing piston 10 may be moved in the entire opening operation section.
- the reinforcing piston 10 may be configured to move from the beginning of opening, in addition to the predetermined section after opening at a predetermined angle from the fully closed state.
- the boosting piston 10 moves to a predetermined section after opening at a predetermined angle from the fully closed position. It is preferable to make it as described above.
- the degree of increase in the door opening force is substantially constant regardless of the opening angle.
- the same effect can be obtained by moving the reinforcing piston 10 in any section, but the door can be moved by moving the reinforcing piston 10 after the door is opened to some extent.
- the inertial force assists the force for moving the reinforcing piston 10 and gives the user a natural feeling.
- the configuration may be such that the reinforcing piston 10 is not provided, and in the above-described embodiment, the example applied to the rotating door has been described, but the present invention can also be applied to a sliding door.
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-369606 | 2004-12-21 | ||
JP2004369606A JP4700960B2 (ja) | 2004-12-21 | 2004-12-21 | ドアクローザ |
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WO2006068005A1 true WO2006068005A1 (ja) | 2006-06-29 |
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PCT/JP2005/022843 WO2006068005A1 (ja) | 2004-12-21 | 2005-12-13 | ドアクローザ |
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WO (1) | WO2006068005A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012095092A1 (de) * | 2011-01-14 | 2012-07-19 | Dorma Gmbh + Co. Kg | Drehflügeltürbetätiger |
WO2013167915A1 (en) * | 2012-05-11 | 2013-11-14 | Konstantinos Stefanidis | Door closing mechanism bearing a system providing latching activation control at any position ranging from 12 to 0 degrees and a shaft tightening onto the cam system |
EP2738332A1 (de) * | 2012-11-28 | 2014-06-04 | DORMA GmbH + Co. KG | Türbetätiger |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100907785B1 (ko) * | 2009-03-17 | 2009-07-15 | 김지환 | 방화도어 클로저용 도어감속장치 |
JP5952154B2 (ja) * | 2012-09-28 | 2016-07-13 | リョービ株式会社 | ドアクローザ |
KR101418581B1 (ko) * | 2012-12-03 | 2014-07-10 | (주) 다원에스디에스 | 도어 폐쇄력을 부가하는 유닛을 구비한 도어 클로저 |
JP7177003B2 (ja) * | 2019-05-28 | 2022-11-22 | リョービ株式会社 | ドアクローザ |
JP7480028B2 (ja) | 2020-11-18 | 2024-05-09 | リョービ株式会社 | ドアクローザ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63195088U (ja) * | 1987-06-01 | 1988-12-15 | ||
JP2977527B2 (ja) * | 1998-04-17 | 1999-11-15 | 日本ドアーチエック製造株式会社 | 扉閉鎖装置 |
JP3011701B1 (ja) * | 1998-10-29 | 2000-02-21 | 日本ドアーチエック製造株式会社 | 扉閉鎖装置 |
-
2004
- 2004-12-21 JP JP2004369606A patent/JP4700960B2/ja not_active Expired - Fee Related
-
2005
- 2005-12-13 WO PCT/JP2005/022843 patent/WO2006068005A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63195088U (ja) * | 1987-06-01 | 1988-12-15 | ||
JP2977527B2 (ja) * | 1998-04-17 | 1999-11-15 | 日本ドアーチエック製造株式会社 | 扉閉鎖装置 |
JP3011701B1 (ja) * | 1998-10-29 | 2000-02-21 | 日本ドアーチエック製造株式会社 | 扉閉鎖装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012095092A1 (de) * | 2011-01-14 | 2012-07-19 | Dorma Gmbh + Co. Kg | Drehflügeltürbetätiger |
EP2663716A1 (de) * | 2011-01-14 | 2013-11-20 | Dorma GmbH + Co. KG | Drehflügeltürbetätiger |
WO2013167915A1 (en) * | 2012-05-11 | 2013-11-14 | Konstantinos Stefanidis | Door closing mechanism bearing a system providing latching activation control at any position ranging from 12 to 0 degrees and a shaft tightening onto the cam system |
EP2738332A1 (de) * | 2012-11-28 | 2014-06-04 | DORMA GmbH + Co. KG | Türbetätiger |
CN103850566A (zh) * | 2012-11-28 | 2014-06-11 | 多玛两合有限公司 | 门操作器 |
Also Published As
Publication number | Publication date |
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JP4700960B2 (ja) | 2011-06-15 |
JP2006176984A (ja) | 2006-07-06 |
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