CN1048578A

CN1048578A - Door closer

Info

Publication number: CN1048578A
Application number: CN89109645A
Authority: CN
Inventors: 乔治·F·托拉多
Original assignee: Thomas Industries Inc
Current assignee: Thomas Industries Inc
Priority date: 1989-07-06
Filing date: 1989-12-30
Publication date: 1991-01-16
Also published as: BR9000433A; JPH0339583A; AU4594089A; CA2004246A1; KR910012484A; EP0406482A1

Abstract

The invention provides a kind of improved door closer with back side check mechanism.This back side check mechanism comprises a loosening elastic buffer rod of installing, and when door is opened to last several years, abuts against metal protection plate and snubber engagement on the sliding cam plate, and the further unlatching of opposite house provides a resistance of increase gradually.When door reached before the normal fully open position about 4 °, protected apron and fender pile meshed fully.The selection of fender pile thickness can create conditions for 90 ° of fully open positions or 105 ° of fully open positions of door, and does not need additive regulating.

Description

Door closer

Involved in the present invention is door closer, more particularly, relates to a kind of automatic door closer that back side check mechanism is arranged.

At present, an existing several general mechanism that close, these mechanisms all provide a kind of device, are used for regulating the motion and prevent excessively drawing back of door of opening the door, and back two kinds of effects are commonly referred to as back side braking.For example, people such as BEJARANO are in U.S. Patent No. 4,064, disclosed door closer in 589, and it provides an adjustable valve 132 to come the back side braking of adjustment doors.When door reached its fully open position, back side check mechanism provided an adjustable cushion for it.This patent also discloses at door and has thrown open, surpass normal/during fully open position, use a cushion pad 157 to cushion the counter motion of drive plate towards the cam box rear wall.Yet, wherein do not disclose any method that the sort buffer pad is installed.

The U.S. Patent No. 3,675,270 of JENTSCH discloses a kind of hydraulic damping device that is screwed on the door closer casing rear wall.The door closer cam is pressed in tabular parts on this hydraulic damping device, the final stage that delays to open the door.In the compression process of hydraulic damping device, by regulating the hydraulic fluid that hydraulic damping device flows into the door closer casing, mechanical energy that just can consumption door, thus slowed down the unlatching of door.

People's such as JENTSCH U.S. Patent No. 3,701,180 discloses a kind of door closer, and the bolt assembly of forming with a kind of compressible material replaces U.S. Patent No. 3, disclosed hydraulic damping device in 675,270 is with U.S. Patent No. 3,675,270 is similar, and this bolt assembly is screwed in the casing.

The U.S. Patent No. 3,246,362 of A.JACKSON relies on the restraint forces of the compression of spring leaf 31 as back side braking, relies on cam 51 and contacting of supporting roller 43,44,45 that door is stopped at the fully open position place simultaneously.

To above technology in fact, belong to novel a kind of back side check mechanism of forming by the loose fit cushion pad.The sort buffer pad provides an increasing resistance that opens the door in the last several years in the stroke of door, until the normal fully open position that reaches door.

The present invention has proposed a kind of improved device as carrying out back side braking when opening door in the above-mentioned this door closer to above-mentioned door closer, in this door closer, when door opens and closes, lobe plate portion's longitudinal sliding motion is within it arranged.A fender pile of being made by elastomeric material can be contained on the rear wall of casing easily and loosely.One metal protection plate is meshed with it by two cam followings wheel, and abuts against on the lobe plate of fender pile, when door reaches in the normal fully open position several number of degrees, just compresses fender pile.So normal fully open position generally is elected to be with the obstruction face of door or the closed position of door and is set to 90 ° or 105 °.

When door reaches its last several years that allow the stroke camber line, and preferably about 4 ° the time, protected apron will with the fender pile butt.Door is if further open, and protected apron just will begin to compress fender pile.When door continue to be opened, by its during stroke, because the compression of fender pile will strengthen the resistance to this trip, like this, motion that just can opposite house provides the braking of the effective back side in last several years.

Above-mentioned fender pile device has played the effect of back side brake valve, and do not need for a fluid type valve is installed, the door closer main body is carried out expensive machine, do not need U.S. Patent No. 4 as discussed above yet, 064,589 is disclosed, wherein because of having used reverse control valve that the sort of hydraulic fluid channel must be arranged.

Fender pile device of the present invention does not need yet, and U.S. Patent No. 3,675,270 as discussed above and No.3 disclosedly in 701,180 are the machine to the costliness of door closer main body of buffer that precession is installed.Because having saved those must be screwed into the device of door closer casing, also just provides the advantage that can exempt leakage problem, because door closer box house instinct hydraulic fluid under pressure.Threaded connector is screwed into the door closer casing can causes leakage problem.

As mentioned above, fender pile be pine be contained in the door closer casing with the casing rear wall on.With bonding ground or mechanically fender pile is fixed on the casing rear wall on the contrary, this device is for assembling or the exchange buffering rod provides a kind of method of high-efficiency and economic.In addition, the invention provides two kinds of removable fender piles, it can provide the door angle of the normal standard-sized sheet of 90 ° or 105 °.For selecting normal standard-sized sheet door angle, except selecting suitable fender pile simply, do not need to do again other any adjusting.

The present invention can be applicable to any door closer, and in this door closer, lobe plate slides in the door closer main body and a position arranged near the door closer wall.

Fig. 1 is the vertical view that embodies the concrete device of door closer of the principle of the invention.Door closer is sealed in the lintel and with door and links to each other;

Fig. 2 is the partial sectional view of the concrete device of the door closer of the principle of the invention, shows the position of lobe plate when being in fully open position almost.

Fig. 3 is the partial sectional view that door closer is in fully open position;

Fig. 4 is the partial sectional view along the IV among Fig. 3-the IV line is intercepted;

Fig. 5 is along the partial sectional view that IV among Fig. 3-the IV line is intercepted, and shows the particular location of fender pile.

The present invention includes an improved door closer, and be illustrated among the embodiment by spring driven hydraulic pressure cartridge type, the latter for example is a U.S. Patent No. 3,246, and 362 is disclosed the sort of, and wherein disclosed content has been incorporated into this and has been made for reference.The invention provides a kind of improved back side check mechanism, can play the braking action of the effective back side and need not complicated and fluid type valve costliness.

The door closer that embodies the principle of the invention roughly is shown in 10 among Fig. 1-4, and Fig. 1 illustrates on the hidden lintel that is installed in doorframe of door closer 10, and has provided closed, the position of door when standard-sized sheet and normal standard-sized sheet almost.

Fig. 2-4 has provided the detailed structure of door closer, and as can be seen, door closer has a casing or shell 12, and this casing is by roof 13, lower wall 14, sidewall 15, and tail end or rear wall 16 reach another end wall that is made of a pair of insert 17 and form.Whole cavity in casing is fuel feeding or supplies other hydraulic fluids to constitute a reservoir.Central dividing plate 18 from an end parts extend internally, partition and sidewall 15 forms a secondary hollow cylinder 19, with the auxiliary piston 20 of packing into.

Diapire 14 and a thread plate 21 of having threaded openings intermesh, and this cover plate has the chimb 22 of a band central opening 23.What extend by this opening is exactly spindle element or hingen spare 24, and it has a non-circular end portion 24a to be used to be installed to door, has a non-circular hole to be used to admit the purpose in the articulated arm 20 of door.Spindle element 24 also comprises column part 25, the one countershafts shoulder or collar portion 27 and 28 that are bearing on the ball bearing 26, and a terminal column part 29 that is bearing on the ball bearing 30.Installed an annular oil seal 39 around necked part 25.

Door closer is equipped with a helical spring 31, and an end roof pressure of each spring in the secondary inner wall section 32, and the other end is overlaying in the piston 20.For connecting those devices that spring and spindle element 24 provide effectively, as shown in the figure, these devices can comprise the cam plate member 35 and 36 that a cover separates, and are provided with a slotted hole 37,38 on each, and the suitable shaft shoulder 27 and 28 are installed in each slotted hole.Piston rod 40 is connected an end of piston 20 with pin 41.The other end of piston rod 40 is fixed on lobe plate 35 and 36 with pin 42.Lobe plate 35 and 36 is further separated by three cam following wheels 43,44 and 45 that are installed in separately rotation on the axle 48,49 and 50 respectively.Cam 51 is installed between spindle element 24 shaft shoulder parts 27 and 28, and cam 51 has a cam face 52 with a pair of closed slots 54.Valving 55 is assemblied on the center spacer 18, is used for limiting cylinder 19 adjusting closing and latch speed of door, and these are all in U.S. Patent No. 3,246, talks out in 362.Fig. 2 illustrates that using the adjustment of two independent valve parts closes and latch speed, and still, the present invention also can use on single valve door door closer.

The present invention is doing improvement aspect the back side braking of adjusting door closer, can adjust the path increment of door in the direction of opening the door.

The back side provided by the invention check mechanism roughly is illustrated in 60 places, comprises a fender pile 62 that exists with elastomeric material pulvilliform formula, rear wall 16 adjacency of this fender pile one side and casing, the opposite side and metal protection plate 64 adjacency of rear wall 16 relatively.Short and in opposite directions the wall 68,70 of one cover to projecting inward, has formed a groove 72 by the sidewall 15 of door closer casing, and fender pile is stuck in the inside.For the location of fender pile 62, need not to use independently clamping device.

Metal protection plate 64 is the member of a C type substantially, comprises a supporting part 64a who roughly is rectangle and curved 62 shackle part 64b, 64c, and these all are to be manufactured by the elastomeric material of spring steel class.The back rib or the rear surface 74 of supporting part 64a and lobe plate 35,36 are adjacent, and towards fender pile 62.Arc shaped hook loop section 64b, 64c are connected on each end of supporting part 64a, perhaps constitute one with supporting part 64a, arc shaped hook loop section 64b surrounds the part excircle of cam following wheel 43, and another shackle part 64c surrounds the part excircle of cam following wheel 44.The circumference that arc shaped hook loop section 64b, 64c surround cam following wheel 43,44 constitutes angle of engagement 64d, foot greater than 90 ° to prevent 43, the 44 accidental disengagements of protected apron and cam following wheel.Angle of engagement 64d be from the center of cam following wheel 43 towards and perpendicular to the straight line of supporting part 64a, and the center of cam following wheel 43 is to the angle between the straight line of the least significant end of arc shaped hook loop section 64b.The angle of engagement 64d of arc shaped hook loop section 64c of can drawing that uses the same method, as shown in Figure 3.Here angle of engagement 64d be as along the center of cam following wheel 44 towards and take turns 44 the angle of center towards between the straight line of the least significant end 64f of arc shaped hook loop section 64c perpendicular to the straight line of supporting part 64a and cam following and measure.When angle of engagement 64d, just can make protected apron 64 be pressed on the cam following wheel and go up and can change during less than 180 ° greater than 90 °.

The thickness of fender pile is to select like this, when the position that door is in out, the rotation that is bearing in the cam 51 on the cam following wheel 43 or 44 move lobe plate 35 and 36 backward, and when door reaches than about little 4 ° the opening the door during the α of angle of fully open position, protected apron 64 will mesh with fender pile 62.Almost fully open position like this is illustrated in 76 among Fig. 1.Along with the continuation of door is opened, the lasting reverse of lobe plate 35,36 and protected apron 64 will make fender pile be compressed, and so just increase the resistance that further opens the door gradually.This resistance increases in the last several years of opening the door together, and compression fully appears in the fully open position in figure shown in 77, has so just prevented the further unlatching of door.

Because lobe plate 35 and 36 all is metal, equipment metal protection plate 64, on a bigger surf zone that the power of being brought by the rear surface 74 of lobe plate is distributed to fender pile, also prevented owing to the wearing and tearing that cause with contacting of lobe plate.Because fender pile 62 is to be installed in the groove 72 than loose ground relatively, therefore, if over worn words will carry out demolition and replacement at an easy rate.

Another characteristics of the present invention are replaceabilities of fender pile, can improve normal standard-sized sheet door angle β.The angle that make position 76a that normal standard-sized sheet door angle β is a door and normal fully open position are 77.Two kinds of maximums that industrial department is usually liked usefulness angle of opening the door is 90 ° and 105 °.

Fig. 4 shows the fender pile 62 that has semicircle roughly or semiellipse cross section.This fender pile has the compressed thickness corresponding to 105 ° of normal standard-sized sheet door angles.The another kind of instantiation of fender pile 62 is shown in Fig. 5, and another fender pile 62a comprises a cover circle or a cover non-circular cross-section, has the compressed thickness corresponding to 90 ° of normal standard-sized sheet door angles.For selecting normal standard-sized sheet door angle, the invention provides the interchangeability of these two kinds of fender piles.For the selection between 90 ° and 105 °, back side check mechanism is to need not improvedly, has therefore reduced this adjustment.

Therefore, the present invention provides an improved door closer that has effective back side check mechanism obviously.This back side check mechanism has the effect of back side system valve, it does not need expensive machine and fluid type valve, but played the braking action of the reliable back side really, and this back side check mechanism when reaching last several years, door provides a cumulative resistance that opens the door.A kind of like this back side check mechanism can be applicable to any door closer; Need only the parts that in this door closer, have to slide or move, just can in the last several years of motion of opening the door, mesh with the elastic buffer rod.

According to above detailed description obviously as can be seen, the present invention is easy to specifically implement by may be different from various changes and the change pattern that the front described in detail and described on detail.Certainly, my requirement is embodied in the improvement of all these classes in the patent right scope that will protect that proposes below, all should be rationally and by rights to belong within the contribution scope that the applicant done this technology.

Claims

1, a kind of door closer, it comprises:

A casing;

Be one movable parts at least in this casing;

A cam in above-mentioned casing, when this casing is linked on 17, it along with door between make position and normal fully open position the opening and closing campaign and rotate, and initiatively mesh with moving member in the case, in the opening movement of door, drive parts;

Back side check mechanism, it comprises an elastic buffer rod, and this fender pile pine is contained in box house, during last several years before door reaches normal standard-sized sheet, fender pile is meshed and is compressed by moving member, thereby a resistance that opens the door that increases gradually is provided in the process of opening the last several years;

One is fixed on the safety guard on the aforementioned moving member in the there towards fender pile, and at this, protected apron will pass to fender pile with the fender pile butt and the pressure from these parts.

2, door closer as claimed in claim 1, wherein said casing comprises a rear wall, when door carried out opening movement, aforementioned parts moved backward, and back side check mechanism is positioned in the rear wall place of contiguous casing.

3, door closer as claimed in claim 2, wherein contiguous rear wall place forms a groove in casing, thereby provides the space for fender pile being stuck in contiguous rear wall place.

4, door closer as claimed in claim 3, wherein said parts comprise many cam following wheels, and cam and supporting roller engagement also drive parts, and two wheels in the supporting roller tighten protected apron.

5, door closer as claimed in claim 4, wherein said protected apron comprises a C type supporting part in abutting connection with fender pile, two arc shaped hook loop sections are arranged in the opposite end of supporting part, each shackle partly surrounds the part circumference of a supporting roller, like this, protected apron is stuck among two supporting rollers movably.

6, door closer as claimed in claim 1, wherein said parts about 4 ° the time, meshed with back side check mechanism before door reaches normal fully open position.

7, door closer as claimed in claim 1, the thickness of wherein said elastic buffer rod should be chosen to, and when door was in normal fully open position, when promptly being 90 ° from the fastening position to the fully open position, fender pile should be subjected to compressing fully.

8, door closer as claimed in claim 1, the thickness of wherein said elastic buffer rod should be chosen to, and when door was in normal fully open position, when promptly being 105 ° from the fastening position to the fully open position, fender pile should be subjected to compressing fully.

9, door closer as claimed in claim 1, it comprises that also one is installed in rotating spindle element in the casing, is used for door closer is fixed on the door; Aforesaid parts then include near the lobe plate spindle element that is installed in the casing; Said cam is driven by spindle element, and cam has the cam face with lobe plate engagement, when cam rotation, the lobe plate moving linearly, cam along with door between make position and normal fully open position unlatching and closing motion in rotate; Aforesaid fender pile and lobe plate engagement also are compressed, and aforesaid protected apron then is fixed on the lobe plate, and the pressure from lobe plate is passed to fender pile.

10, door closer as claimed in claim 9, the fender pile of wherein addressing are placed in the rear wall place of contiguous casing, and lobe plate is along with the unlatching of door is moved backward, and lobe plate and fender pile intermesh.

11, door closer as claimed in claim 10 wherein is formed with a groove at the contiguous rear wall of described box house place, is used for providing the space for fender pile being stuck in contiguous rear wall place.

12, door closer as claimed in claim 11, wherein said fender pile has the shape of circular cross section.

13, door closer as claimed in claim 11, wherein said fender pile has the shape of semi-circular cross-section.

14, door closer as claimed in claim 9, it also includes valving, in order to adjust the closing speed of door.

15, door closer as claimed in claim 14, wherein said valving comprises two valves, has not only adjusted the closing speed of door but also has adjusted the latch speed of door.

16, door closer as claimed in claim 15, wherein said protected apron be about 4 o'clock and fender pile engagement before the fully open position of door.

17, door closer as claimed in claim 16, wherein said lobe plate comprises many cam following wheels, supporting roller and cam face engagement, make lobe plate linear mobile, protected apron has the C type part that a band extends, and it has two arc shackles, and each shackle surrounds the part circumference of a cam following wheel, movably protected apron is installed in the rear side of lobe plate, towards fender pile.

18, door closer as claimed in claim 17, wherein said fender pile has the shape of a circular cross section.

19, door closer as claimed in claim 17, wherein said fender pile has the shape of a semi-circular cross-section.