CN1965141A

CN1965141A - Door closer

Info

Publication number: CN1965141A
Application number: CNA2004800331206A
Authority: CN
Inventors: 宋长宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-12
Filing date: 2004-11-09
Publication date: 2007-05-16
Also published as: KR200340473Y1

Abstract

The present invention relates to an apparatus for closing the door slowly and automatically. The conventional door closer has a complicated structure and causes much energy loss because the compressing force of the compression spring in the body is transferred through a gear. However, the present invention can directly get the door closed by the piston rod without passing through a gear, so that the energy loss is little, and a small amount of air is contained in the hydraulic oil in order for the piston and the piston rod to be moved to the left and right hand side. The closing speed of the door can be adjustable by turning a speed adjustment bolt. The installed conventional door closet must be disassembled and reassembled for a force adjustment to adjust the opening and closing force of the door, and it was very difficult to install the conventional door closer due to the adjustment of mounting position to the door and the doorframe and the length of the link. However, the present invention can be simply adjusted for the force adjustment by turning the force adjustment nut when it is installed, and for the installation, it is very easy to install the present invention since the function of the invention works with a force adjustment by turning the force adjustment nut when the invention is fixed to the door and doorframe. The invention can be applied to all kinds of small- or big-sized opening and closing doors including a plastic door, an aluminum door, a wood door, and a steel door to close slowly and automatically.

Description

Door closer

Technical field

The present invention relates to slowly close automatically the door closer of various switch doors.

Background technology

For self-closing doors, at present as shown in Figure 2, the cylindrical shape internal body of filling oil pressure oil is provided with spring and gear, and the restoring force of spring (71) is by gear a (72), and gear b (73) and connecting rod (74) be self-closing doors slowly.Existing product is because the restoring force of spring is closed door by gear and connecting rod, so the power loss is big.Need very strong compression spring and in establish gear, so its complex structure is heavy again.Attractive in appearance because of externally adhering to the connecting rod influence.And, install afterwards in order to adjust the dynamics of switch door, Fig. 2 and Fig. 3 from be formed on the gear b (73) protrusion rod (73a) disintegration connecting rod (74) afterwards, reset connecting rod (74) angle and the adjustment dynamics of protruding on the rod (73a) in order to compress spring (71), therefore the dynamics adjustment is very inconvenient, for a lot of power of adjustment dynamics consumption.Install also is that reasons such as attachment position on Yin Men and the doorframe and length of connecting rod adjustment must the expert be installed.But spring restoring force of the present invention is not by gear, but directly slowly closes the door by piston rod.Piston rod contains little air in order to move forward and backward at oil pressure oil.In order to close the door at leisure or fast, be provided with SAS at cylinder both side ends edge.And, this device is installed in door and doorframe time institute necessity and the dynamics when adjusting the switch door, be provided with the dynamics adjustment screw at piston rod one side end.

Summary of the invention

Existing product is that the spring restoring force is closed the door by gear and connecting rod, so the power loss is big.And need very strong compression spring, and built-in gear and complex structure is heavy.Attractive in appearance because of externally adhering to the connecting rod influence, and installation difficulty is very big and need the expert to install.Because of timber or light weight door are the impaired and difficult installations of attachment area.After installing for the adjustment dynamics, disintegrate again and the adjustment dynamics after be reinstalled on the door, therefore very inconvenient.

The present invention is for the loss of minimizing power, and the spring restoring force is not by gear, but directly closes the door by piston rod.Piston rod contains little air in order to move forward and backward at oil pressure oil.And,, be provided with SAS at cylinder both side ends edge in order to adjust the speed of closing the door.This device is installed in door and doorframe time institute is necessary and in order to adjust effort to close, be provided with the dynamics adjustment screw at piston rod one side end.

Spring restoring force of the present invention is not by gear, but directly closes the door by piston rod.So the power loss is few, and light structure is simply attractive in appearance again.The speed of closing the door also is to need only the rotary speed adjustment screw, and installation also is that the present invention is needed only rotation dynamics adjustment screw after on door and the doorframe.Also can install because of being easy to install the beginner.The dynamics adjustment of switch door also is as long as the rotation dynamics is adjusted screw, so the dynamics adjustment is very easy to.And, because of using the attachment area on weak spring door and the doorframe not impaired, on weak door or light door.

Description of drawings

Fig. 1 is the oblique view of traditional door closer.

Fig. 2 is the cut-away view of traditional door closer.

Fig. 3 is that the A portion of Fig. 2 enlarges and exploded view.

Fig. 4 is the oblique view according to door closer of the present invention.

Fig. 5 is according to door closer cut-away view of the present invention.

Fig. 6 is the F-F sectional view of Fig. 5.

Fig. 7 is the G-G sectional view of Fig. 6.

Fig. 8 is that the 2a portion of Fig. 7 enlarges oblique view.

Fig. 9 is the B portion expanded view of Fig. 5.

Figure 10 is the C portion expanded view of Fig. 5.

Figure 11 is the D portion expanded view of Fig. 5.

Figure 12 is the E portion expanded view of Fig. 5.

Figure 13 is the H-H sectional view of Fig. 9.

Figure 14 is H '-H ' sectional view of Figure 10.

Figure 15 is the details drawing of Fig. 5 symbol 4.

Figure 16 is expansion and the exploded view of Fig. 5 symbol 8 and 8a.

Figure 17 is the expanded view of Fig. 5 symbol 6a.

Figure 18 is the expanded view of Fig. 5 symbol 6b.

Figure 19 is installed in figure (front view of being looked in front) on the door to the present invention.

Figure 20 is installed in figure (plan view of overlooking from above) on the door to the present invention.

Figure 21 is the opening installation Fig. 1 (plan view of overlooking from above) in door time of the present invention.

Figure 22 is the opening installation Fig. 2 (plan view of overlooking from above) in door time of the present invention.

Figure 23 is mounted in the oblique view of the present invention on the direction of closing the door.

Figure 24 is mounted in the cut-away view of the present invention on the direction of closing the door.

Figure 25 is located at figure (front view of being looked in front) on the door being installed in the present invention on the direction of closing the door.

Figure 26 is located at Fig. 1 (plan view of overlooking from above) on the door being installed in the present invention on the direction of closing the door.

Figure 27 is located at Fig. 2 (plan view of overlooking from above) on the door being installed in the present invention on the direction of closing the door.

The specific embodiment

Cylinder (1) inside that filling contains the oil pressure oil of little air is provided with spring (5), spring guide piece (4), piston (2), piston rod (3), form SAS (6a) (6b) at cylinder both side ends edge, one side end of cylinder is provided with doorframe fastening devices (8), and end side is provided with door fastening device (9) by piston rod (3).And the installation dynamics is adjusted nut (7) between door fastening device (9) and the piston rod.

Below, describe in detail with reference to accompanying drawing.The present invention installs the doorframe fastening devices of additional support frame (8a) (8) to be located at cylinder (1) one side end as required.Cylinder (1) inside is provided with ball (2b), and built-in handle adheres to piston (2) and the spring guide piece (4) and the spring (5) of hole (2a) formation of block tongue rod (2a '), adheres to piston rod (3) on the piston (2).At the terminal outer nut (3a) that forms of a side of piston rod (3), the inner dynamics that forms inner nut of assembling is here adjusted nut (7), and dynamics is adjusted nut (7) door assembly fastening devices (9).The both side ends edge of cylinder (1) is provided with SAS (6a) (6b), and cylinder chamber (1a) (1b) is filled with the oil pressure oil that contains little air.Undeclared symbol (20a) (20b) (20c) is an oil sealing (20d), (40a) is sliding bearing, (1c) (1d) (1e) (1f) be oilhole, (30a) (30b) is center of rotation (30c), (30) are the center of rotation connecting lines.

When this device that is made of above part opens the door (10) at Figure 20, be pushed out to the right and compress spring (5) at Fig. 5 piston (2) and piston rod (3).At this moment, the oil pressure oil of cylinder chamber (1a) is in order to flow to cylinder chamber (1b) as early as possible, be pushed out to the left at Fig. 7 hole (2a) ball (2b), and blocked by block tongue rod (2a ') and can not roll out outward at Fig. 8 ball (2b), oil pressure oil flows out ball (2b) as early as possible and can open the door fast on every side.At this moment, the oil pressure oil that flows out from cylinder chamber (1a) when flowing to, is adjusted oil pressure oil mass compression cylinder interior little air by piston rod (3) volume that moves to cylinder chamber (1b).When compression-expansion spring (5),, between piston (2) and spring (5), be provided with spring guide piece (4) in order to prevent impaired and compression-expansion spring equably by the spring cylinder inwall.At Figure 22 door (10) is reached certain angle when above, decontroling also according to spring (5) hand, goalkeeper opens automatically.Promptly, door reach certain angle when above as shown in figure 22, center of rotation (30c) is the connecting line of center of rotation (30a) and center of rotation (30b), promptly center of rotation connecting line (30) as benchmark when being positioned at wall (12) side, the thrust of spring (5) is opened the door more, and therefore door is opened.Door is reached certain angle with as shown in figure 21 interior, and when center of rotation (30c) was positioned at the opposition side of wall (12) to center of rotation connecting line (30) as benchmark, spring (5) power was closed the door.That is, opening closes the door a little (10) under the state of door or door is opened to state below the certain angle transfers when opening the door (10), at Fig. 5 piston (2) and piston rod (3) according to spring restoring force (5) be pushed out to the left and close the door (10).At this moment, for slowly close the door (10), be pushed out and seal hole (2a) at Fig. 7 and Fig. 8 hole (2a) ball (2b) to the right according to the flow direction of oil pressure oil, oil pressure oil by oilhole (1c) (1d) (1e) (1f) slowly flow to cylinder chamber (1a) from cylinder chamber (1b).At this moment, the little air in the cylinder is by the piston rod volume expansion of moving.And rotary speed adjustment screw (6a) strengthens or reduces oilhole (1d) and the flow of adjustment oil pressure oil, thereby adjusts the speed of closing the door.Rotate fine SAS (6b) increasing or minimizing oilhole (1e) and adjust the speed of closing the door at last.Promptly, begin at closing time under the state that opens the door, piston (2) arrives oilhole (1d) the size decision of the speed of closing the door before oilhole (1g) position according to SAS (6a), by oilhole (1f) afterwards according to oilhole (1e) size adjustment of fine SAS (6b) speed of closing the door at last.At Fig. 5 and Figure 11 to the left or rotation dynamics in right side when adjusting nut (7), the dynamics that is formed on is adjusted the inner inner nut of nut (7) and the outer nut (3a) that is formed on piston rod one side end is released laterally or is furthered to the inside, thus the dynamics that adjustment is closed the door.And, installation is to state Xiamen (10) that door fastening device (9) furthers fully and doorframe front (11a) fixedly after the present invention outer nut (3a), rotation dynamics adjustment nut (7) is released outer nut (3a) and is increased effort to close to cylinder (1) and gets final product, and therefore is easy to install.And additional support frame (8a) adheres to doorframe fastening devices (8) at Figure 20 doorframe front (11a) determines the center of rotation of hinge (30) (30a) in the beneath setting of doorframe fastening devices (8) according to protruding high low degree as benchmark.That is, raise center of rotation (30b) when protruding highly, therefore do not need to be provided with additional support frame (8a).Because of reducing center of rotation (30b) additional support frame (8a) is set when protruding lowly, thereby raises center of rotation (30b).Therefore, because of raising center of rotation (30b) though go into overdrive, open the displacement that increases piston rod at closing time and increase entire length of the present invention after being provided with, wall bears too much power, therefore needs suitably selection use.

Discussed above is the present invention to be installed afterwards by the direction of opening the door close the door according to the dynamics that pushes.When being provided with, use the oblique view (23) and the cut-away view (24) of same principle to get final product by the direction of closing the door.At this moment, the above-mentioned invention cut-away view by the direction installation of opening the door is changed cylinder (2) from the right side as benchmark to the left in Fig. 5 spring (5), spring guide piece (4), SAS (6a), oilhole (1d) position, fine SAS (6b) and oilhole (1e) (1f) are changed to the left from the left side, and cylinder (2) also is that the Rotate 180 degree is attached on the piston rod (3).Install also is that outer nut (3a) is positioned at after the right-hand end of dynamics adjusting nut (7), door (10) and doorframe (11) are gone up after fixedly the present invention, rotation dynamics adjusting nut (7) is to door fastening device (9) outer nut (3a) that furthers, thereby strengthens effort to close.And the present invention of oblique view when being provided with by the direction of closing the door (23) and cut-away view (24) closes the door according to the dynamics of sliding door.

All can utilize on the nearly all switch door that will close the door automatically.Cylinder of the present invention (1) can be produced with the aluminum casting, but compresses when producing and can reduce production costs with aluminium.It is gold-plated that piston rod (3) is coated hard chromium, not only antirust, and improve the surface scheduling of piston rod.Thereby piston rod prevents the leakage of oil pressure oil when forward-reverse.And it is whether beneath that doorframe front (11a) is located at doorframe fastening devices (8) to the hinge center of rotation as benchmark according to protrusion degree decision additional support frame (8a).That is, though increase dynamics when being provided with is opened the displacement that increases piston rod at closing time.Thereby increase entire length of the present invention, wall bears too much power, therefore needs suitably to select to use.When protruding De Taigao to the center of rotation of hinge (30) (30a) as benchmark, doorframe front (11a) select highly low doorframe fastening devices to use.And, in cylinder (1) inside the spring guide piece that material is a plastics series (4) is set, prevent that when the compression-expansion spring cylinder inner wall is impaired by spring (5), equably the compression-expansion spring.Air capacity in the cylinder oil pressure oil exceeds appropriate amount when above, sounds the move left and right speed instability of piston rod when piston (2) and piston rod (3) are mobile to the left and right.Than appropriate amount after a little while, piston and piston rod do not move to the left and right.Therefore contain piston and the piston rod appropriate amount of mobile degree to the left and right.Installation is that door (10) is upward gone up door fastening device (9) with nail or screw door (10), and doorframe front (11a) last fixedly doorframe fastening devices (8) afterwards, rotation dynamics adjustment screw (7) is suitably adjusted after the switch dynamics, and the adjustment of rotary speed adjustment screw installs when closing the door speed and can utilize the present invention.And, all applicable the present invention on all switch doors from the wicket to the gate.Especially, the present invention is suitable for paying attention to place attractive in appearance because of goodlooking.And the little and attachment area of self dynamics of door is easy to impaired door can be not impaired because of the present invention yet.Also do not need technology during installation, so the beginner also installs the present invention easily.

Claims

1, from the wicket to the gate applicable to the door closer of various switch doors, it is characterized in that; Be provided with the doorframe fastening devices (8) of other additional support frame (8a) as cylinder (1) one side end of body, end side is provided with door fastening device (9) by piston rod (3).And; cylinder (1) both side ends edge is provided with SAS (6a) and fine SAS (6b); at cylinder (1) internal piston (2), piston rod (3), spring (5) and spring during in compression-expansion; for from spring protection cylinder inner wall and compression-expansion spring equably, be provided with the spring guide piece (4) of drum and the oil pressure oil that filling comprises little air between spring (5) and the piston (2).Install when of the present invention dynamics adjusting nut (7) necessary and by-pass cock door dynamics be located between piston rod (3) and the door fastening device (9).