CN1250857C

CN1250857C - Door shutter

Info

Publication number: CN1250857C
Application number: CN02143154.XA
Authority: CN
Inventors: 鲁迪·福伊希特
Original assignee: Geze GmbH
Current assignee: Geze GmbH
Priority date: 2001-09-13
Filing date: 2002-09-13
Publication date: 2006-04-12
Anticipated expiration: 2022-09-13
Also published as: EP1293633B1; ATE402312T1; EP1293633A2; EP1293633A3; CN1407201A; DE50212527D1; DE10145200B4; DE10145200A1; ES2305165T3; PT1293633E

Abstract

The invention relates to a door shutter which comprises a housing, a plunger linearly guided in the housing, a mechanical accumulator for automatic closing door, a driving element, and a hydraulic damping unit. The inner chamber of the housing is filled with a damping medium and is liquid hermetically divided into at least two chambers by the plunger. An overflow valve is arranged in the plunger for the smooth passage of the damping medium when the door is opened. For the state of manual over-press the door in closing direction, an overpressure valve is arrange in the plunger, which works, when the damping medium over-pressure is generated by manual overpressing the door, to discharge the damping medium from the housing inner chamber. The overpressure valve and the overflow valve are both arranged at a valve body disposed in a plunger bore. The valve body can be guided into the plunger bore and is sealed with the inner surface of the plunger bore using a seal to seal the fluid of the inner surface of the plunger bore at the terminal position of movable region of the valve body.

Description

Door closer

Technical field

The present invention relates to a kind of door closer that is used for closed door leaf.

Background technology

By the known a kind of door closer that is used for closed door leaf of DE 198 08 292 A1, has a housing, the piston that can guide movably at the housing cathetus, the closer axle of a rotatably support in housing, a closer spring that is bearing on the housing and piston is loaded, and hydraulic damping device, wherein, the enclosure interior space is full of resisting medium, and the enclosure interior space is divided at least two housing inner rooms hermetically by described piston fluid, wherein, described piston can be operated by the rotation of closer axle, and the closer spring is compressed, wherein, an overflow valve is set in described piston, be used for through-flow resisting medium when opening door leaf, wherein, an additional excess pressure valve is set in described piston, this excess pressure valve is because along the manual overvoltage door leaf of closing direction, and work when in a housing inner room, producing the resisting medium overvoltage, resisting medium is additionally discharged from the housing inner room by this excess pressure valve towards damping unit, wherein, in the valve of described excess pressure valve in described overflow valve is arranged on piston upper piston hole, wherein, described valve body is guiding movably in piston hole, and described valve body has a sealing.Door closer has a housing, but has piston straight line in this housing to guide movably.For the auto-closing door leaf, the mechanical type accumulator that is made of the closer spring acts on the driving element that is made of the closer axle, can connect a connecting rod that transmits power on this driving element.Have a hydraulic damping device to play the effect that makes door leaf damping closure, wherein, the housing inner room is full of resisting medium, and piston is divided into two housing inner rooms hermetically with enclosure interior space fluid.When opening door leaf, because moving, piston make a housing inner room become big, resisting medium is through-flow to becoming big housing inner room from the housing inner room that diminishes by the overflow valve that is arranged on the piston.This overflow valve cuts out when closed door leaf.Resisting medium flows to another housing inner room by a unshowned orifice valve from the housing inner room that diminishes, and described orifice valve for example is arranged on an overflow ducts the inside of extending in housing.In closing course, door leaf may be by " overvoltage ", that is, the movement velocity that might door leaf is scheduled to than damping device itself is moved along closing direction quickly.In this case, produce bigger overvoltage to resisting medium that can only trace compression in the housing inner room that when closure, diminishes.For the connecting rod that makes the piston-cylinder-device or the power of transmission is not damaged in this case, an excess pressure valve is set on piston, this excess pressure valve works and resisting medium is discharged in another housing inner room at certain resisting medium excessive rolling and goes.

Embodiment of (Fig. 1 there) of above-mentioned DE 198 08 292 A1 is illustrated in independent overflow valve and the excess pressure valve that is provided with on the piston.This embodiment work in-process is time-consuming and bothersome, because must arrange a plurality of perforates and assemble valve individually on piston.

Piston shown in (Fig. 2 there) another embodiment of above-mentioned DE 198 08 292 A1 has the turnover plate type drip molding that is assemblied on the piston end surface, and a combination valve (being combined by flap valve and excess pressure valve) is set in this drip molding.This embodiment work in-process also is time-consuming and bothersome, because the processing of this independent drip molding and assembling need hold valve and must the preliminary treatment piston in order to assemble drip molding (will cut piston in order to form more small cross section at the drip molding place, also want additional aperture) in order to prevent reversing.

Summary of the invention

The objective of the invention is, a kind of door closer with excess pressure valve is provided, this door closer can be easy and processing economically.

For this reason, the present invention proposes a kind of door closer that is used for closed door leaf, has a housing, the piston that can guide movably at the housing cathetus, the closer axle of a rotatably support in housing, a closer spring that is bearing on the housing and piston is loaded, and hydraulic damping device, wherein, the enclosure interior space is full of resisting medium, and the enclosure interior space is divided at least two housing inner rooms hermetically by described piston fluid, wherein, rotation by the closer axle is moved described piston in housing, thereby the closer spring is compressed, wherein, an overflow valve is set in described piston, be used for through-flow resisting medium when opening door leaf, wherein, an additional excess pressure valve is set in described piston, this excess pressure valve is because along the manual overvoltage door leaf of closing direction, and work when in a housing inner room, producing the resisting medium overvoltage, resisting medium is additionally discharged from the housing inner room by this excess pressure valve towards damping unit, wherein, in the valve of described excess pressure valve in described overflow valve is arranged on piston upper piston hole, wherein, described valve body is guiding movably in piston hole, and, described valve body has a sealing, it is characterized in that, the sealing of described valve body directly with the inner surface mating reaction of described piston hole, make described sealing with valve body in the terminal location of its moving range inner surface fluid-tight with respect to described piston hole.

The valve that is combined by overflow valve and excess pressure valve has a valve body that directly removable guiding ground is provided with in the piston hole of piston.Therefore in piston, only need to arrange a unique perforate of holding valve, and the inner surface of piston hole is direct and valve body and its sealing acting in conjunction, has saved additional parts thus; The two significantly reduces processing charges.

Valve can be fully in piston outside pre-assembled: can after injecting valve cone and spring a clack box be advanced valve body, wherein being connected between clack box and the valve body can be designed to the clamping connection.This point can make assembling obviously simplify and further reduce thus processing charges.

At last can with preassembled valve with simple especially method, be in the propelling piston hole, clamping ground.

Valve can constitute on module type ground in addition: valve body a kind of single-piece, that one constitutes can be set to cover all applicable cases.In this valve body, can use parts multi-form, that adapt to various application scenarios, especially different clack boxes and/or different springs and/or different valve cones.For example spring can be designed to different length according to the operating pressure of excess pressure valve, wherein all can have an adaptive clack box for every kind of spring length.By this module type valve mechanism processing charges, especially tool expense and/or inventory carrying cost are further reduced.

In having the structure design of advantage, different valve building block, for example valve body, clack box and/or valve cones can be processed economically by plastics (injection moulding).Certainly also can use other elastomeric material and can consider to use other material again for valve body and clack box for valve cone.

The use of this combined valve is not limited to the combination of above-mentioned overflow valve and excess pressure valve.Other imaginabale application with the combined valve of spline structure is, for example overflow valve and the excess pressure valve that is used to open damping overvoltage insurance made up or with overflow valve and close damper valve or open orifice valve and make up.

Description of drawings

Of the present invention other has in the structural concept narration below of advantage to be described.Explain embodiment by means of accompanying drawing below.In the accompanying drawing:

Fig. 1 is the door closer longitudinal sectional drawing with combined valve,

Fig. 2 is the enlarged drawing of the combined valve among Fig. 1,

Fig. 3 is a kind of variant embodiment of combined valve,

Fig. 4 is the end-view of combined valve.

The specific embodiment

Have a housing 2 at the door closer shown in Fig. 11, but this housing have one therein straight line move the piston 3 of guiding.Described piston 3 is furnished with engaging tooth 8 in the chamber within it, is engaged in this engaging tooth at the gear 9 of the closer axle 10 of door closer 1 housing 2 the inside rotatably supports.The closer spring 7 that constitutes by helical spring be arranged in the housing inner room 6 on the left side also-be bearing in housing, for example in the unshowned here left shell shutoff-piston 3 is loaded to the diagram location right.This position is corresponding to the make position of door leaf, and door leaf perhaps is directly connected on the closer axle 10 of door closer 1 by connecting rod, for example shear arm or the cursor slide of transmission power.

If manually open door leaf, piston 3 rotates in the clockwise direction by manipulation closer axle 10 and is moved to the left, and closer spring 7 is compressed simultaneously.The resisting medium that is entered by left side housing inner room 6 flows in the internal piston space 5 by left hand piston hole 13 and the valve 15 that continues 14 li in right hand piston hole by being arranged on place, piston 3 right sides flows in the right shell body inner room 4, describes in detail in the structure of described valve and the operating principle accompanying drawing below.

In case door leaf is released, compressed closer spring is roof pressure piston 3 to the right just; At this, closer axle 10 makes the door leaf that is connected forward its make position to counterclockwise to rotate.Because closure when there is overvoltage in valve 15 in right side housing inner room 4, so resisting medium damping is arranged flows in the housing inner room 6 or internal piston space 5 in left side by a unshowned here overflow ducts, described overflow ducts comprises an equally also unshowned valve that is used to guarantee close damper.Guarantee that thus door leaf is suddenly not closed, but damping is arranged forward its make position to.If by overvoltage manually, that is, door leaf is by more closed quickly than itself predetermined close damper in the closed process in damping ground is arranged for door leaf, the resisting medium that then is in big excessive rolling is discharged in the internal piston space 5 by valve 15 by the housing inner room 6 on right side.Valve 15 designs like this, that is, just open when making its overvoltage in right side housing inner room 6 big, and normal door leaf have that this valve is closed in the damping closing course, said big overvoltage is to produce when manual overvoltage door leaf.

Fig. 2 illustrates the sectional drawing of piston 3 at its its right end face place.The valve body 18 of the valve 15 that is made of combined valve of end face piston hole 14 the insides is arranged in the piston.In valve body 18 inside a clack box 25 is set.But one is bearing in spring 27 clack box 25 the insides, that be made of helical compression spring and loads with respect to the valve cone 24 that 23 pairs of straight lines of a perforate of valve body 18 right-hand members move.In addition, clack box 25 also has a perforate 28 of leading to internal piston space 5 at its left end.

But valve body 18 straight lines of valve 15 are arranged on piston hole 14 inside movably.Accompanying drawing is expressed the terminal location of valve body 18 in its left side.Being fixed on to a fluid-tight sealing 19 on the valve body 18, that be made of joint ring closely abuts on the inclined plane 16 of piston hole 14 at the terminal location of this valve body 18.When the resisting medium overvoltage occurring in the closing course that damping is being arranged in right side housing inner room 4, valve body 18 is positioned at this terminal location.Pass through the valve cone 24 of the perforate 23 top pressure springs loading of valve body 18 at the resisting medium of excessive rolling generation.When to door leaf during in the manual overvoltage of closing direction, the overvoltage of resisting medium surpasses the power of spring 27, and valve cone 24 bounces back left and makes perforate 23 discharge through-flow resisting medium and lead to internal piston space 5 thus along perforate 28 directions of clack box 25.

When the spring force of spring 27 is big, promptly in right side housing inner room 4 up to the issuable over-pressure of valve cone 24 retractions, sealing 19 may be compressed more or less.In order to make sealing 19 not be subjected to excessive compression and relevant therewith damage, valve body 18 designs like this, makes the overvoltage of valve body in right side housing inner room 4 lean the inclined plane 16 of piston hole 14 when very big.

In order to make valve cone 24 and corresponding passage section not contaminated, a filter 22 is set, this filter elimination issuable foreign matter in through-flow resisting medium in valve body 18.

Moving right of valve body 18 limits by the block tongue in the reaming 17 that is embedded in piston hole 14 20.Valve body 18 is positioned at this position when 5 overvoltages of internal piston space.Because valve body 18 is when being in this position, sealing 19 no longer contacts with the inclined plane 16 of piston hole 14, thus resisting medium can be from internal piston space 5 by the passage undamped shown in Fig. 4 flow to the housing inner room 4 on right side.Thereby, be connected door leaf on the door closer 1 can overcome the closer spring the power undamped open.

As described in the above-mentioned embodiment, has same function at the valve shown in Fig. 3 15.Be the fixed form of clack box 25 in valve body 18 with the different of the foregoing description.Valve body 18 has breach 21, is entrenched in to grab 26 clampings of clack box 25 this breach the inside.

Figure 4 illustrates a cross section of valve body 18.Be that circular valve body 18 has plane 29 originally in cross section, this plane 29 constitutes the passage with passage section 30 with the inwall of piston hole 14.This passage is through-flow to flow to the resisting medium of right side housing inner room 4 by internal piston space 5.

Reference numeral

1 door closer

2 housings

3 pistons

4 housing inner rooms

5 internal piston spaces

6 housing inner rooms

7 closer springs

8 engaging tooths

9 gears

10 closer axles

13 piston holes

14 piston holes

15 valves

16 inclined planes

17 reamings

18 valve bodies

19 sealings

20 block tongues

21 breach

22 filters

23 perforates

24 valve cones

25 clack boxes

26 grabs

27 springs

28 perforates

29 planes

30 cross sections

Claims

1. the door closer (1) that is used for closed door leaf,

Closer spring (7) and a hydraulic damping device that closer axle (10), one with the piston (3) that a housing (2), can guide movably at housing (2) cathetus, a rotatably support in housing (2) is bearing in that housing (2) is gone up and piston (3) is loaded

Wherein, the enclosure interior space is full of resisting medium, and the enclosure interior space by described piston (3) fluid-tight be divided at least two housing inner rooms (4,6),

Wherein, the rotation by closer axle (10) is moved described piston (3) in housing, thereby closer spring (7) is compressed,

Wherein, an overflow valve is set in described piston (3), is used for through-flow resisting medium when opening door leaf,

Wherein, an additional excess pressure valve is set in described piston (3), this excess pressure valve is owing to work during the overvoltage of generation resisting medium along the manual overvoltage door leaf of closing direction and in a housing inner room (4), resisting medium is additionally discharged from housing inner room (4) by this excess pressure valve towards damping unit

Wherein, in a valve (15) valve body (18) of described excess pressure valve in described overflow valve is arranged on piston (3) upper piston hole (14),

Wherein, described valve body (18) is guiding movably in piston hole (14),

And described valve body (18) has a sealing (19),

It is characterized in that, the sealing (19) of described valve body (18) directly with the inner surface mating reaction of described piston hole (14), make described sealing (19) with valve body (18) in the terminal location of its moving range inner surface fluid-tight with respect to described piston hole (14).

2. door closer as claimed in claim 1 is characterized in that, described piston hole (14) has a device that is used to limit the moving movement of valve body (18).

3. door closer as claimed in claim 2 is characterized in that, described piston hole (14) has an inclined plane (16).

4. door closer as claimed in claim 2 is characterized in that, described piston hole (14) has a reaming (17).

5. door closer as claimed in claim 4 is characterized in that, described valve body (18) has block tongue (20), the ground mating reaction of this block tongue and piston hole (14) clamping location.

6. door closer as claimed in claim 1, it is characterized in that, described valve body (18) has plane (29), the inwall of described plane and piston (3) forms the passage with cross section (30), and this passage can make resisting medium through-flow to another housing inner room (4) from the housing inner room that is made of internal piston space (5).

7. door closer as claimed in claim 1, it is characterized in that, a clack box (25) is set in valve body (18), and a spring (27) is set in clack box (25), described spring-loaded is in clack box (25) and a valve cone (24) is loaded with respect to the perforate (23) of valve body (18), simultaneously, described clack box (25) has a perforate towards internal piston space (5) (28).

8. door closer as claimed in claim 7 is characterized in that, described clack box (25) have one be used for clack box (25) force closure and fluid-tight be fixed on the fastening devices of valve body (18).

9. door closer as claimed in claim 8 is characterized in that, described clack box (25) has grab (26), breach (21) mating reaction of this grab and valve body (18).

10. door closer as claimed in claim 7 is characterized in that, described valve (3) module type ground constitutes, and makes to use different clack box (25) and/or different spring (27) and/or different valve cones (24) in the valve body (18) that one constitutes.

11. as claim 5 and 10 described door closers, it is characterized in that, described valve (3) can assemble by valve body (18) being advanced in the described piston hole (14) and by clack box (25) is advanced in the described valve body (18), wherein, being connected between valve body (18) and the piston hole (14) and between clack box (25) and the valve body (18) is clamping and connects (16,20,21,26).

12. door closer as claimed in claim 1 is characterized in that, described valve body (18) and described clack box (25) are made by elastomeric material respectively.