CN2037769U

CN2037769U - Hydraulic door closer

Info

Publication number: CN2037769U
Application number: CN 88213230
Authority: CN
Inventors: 赵盘
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-09-09
Filing date: 1988-09-09
Publication date: 1989-05-17

Abstract

The utility model relates to a hydraulic door closer, comprising a rocker arm connecting rod mechanism and a spring resetting oil cylinder with a tooth gear rack transmission of a multifunctional integrated oil way valve arranged inside. The closing door operation is slow and quite with no noise. There are two segments of adjustable shutting speed when the door leaf is opened between 0 to 25 to 86 DEG, and the door leaf can automatically shut with delay time when the door leaf is opened between 86 to 92 DEG. When the door is pushed to an arbitrary position between 92 to 140 DEG, the door stops when the hand removes. The hydraulic locking can be released with reverse light pulling. The hydraulic door closer can be installed and used on unidirectional opening doors that open to the left or the right. The non spring type is suitable for unidirectional opening door leaves which are provided with spring hinges already.

Description

The fluid pressure type door closer

The utility model relates to a kind of fluid pressure type door closer-holder.

Common door closer has spring and fluid pressure type at present.The spring door closer produces acceleration when closing.Impact force is big, and door is stopped on a certain enable possition.The fluid pressure type door closer does not generally exist acceleration and impact phenomenon when closing.Part hydraulic pressure door closer does not possess and stops a function.Mostly adopt mechanical braking mechanisms such as bumping pearl, cam, friction plate and have the hydraulic pressure door closer that stops a function.Thereby can only make door leaf be parked in a certain permanent position, it is not good to stop a reliability.Using slightly one often causes door and door closer to damage in pairs accidentally.The hydraulic pressure door closer that has has hydraulic lock assembly.But its hydraulic mechanism adopts the aluminium alloy compression casting box-shaped shell, processes many grommet passages above and forms hydraulic circuit.Processing technology is complicated.Chinese patent application has been introduced a kind of hydraulic pressure door closer that can make door leaf be parked in arbitrary enable possition for No. 87213173.But whenever stop and all needing manual operations to handle knob when restarting door leaf, rather inconvenience.

The utility model proposes the fluid pressure type door closer of another kind of structure, it has door two sections adjustable closing velocities when being opened to 0 °-25 °-86 °, in the time of 86 °-92 ° time-delay closing, function such as is stopped automatically in the optional position in the time of 92 °-140 °.And manufacturing process is simpler.Metal consumption is economized.

This door closer-holder comprises connecting rod base, adjustable connecting-rod, rocking arm, hydraulic mechanism and base.One end and the connecting rod base of adjustable connecting-rod are hinged, and the other end and rocking arm small end are hinged.The square hole of the big end of rocking arm is enclosed within the tooth shaft extension and goes out on the square toes of hydraulic mechanism.Described hydraulic mechanism is a rack-and-pinion driving spring homing position type damping oil cylinder, it comprises oil cylinder seat, tooth axle, oil cylinder (and end cap), plunger, integrated oil path valve and main spring, wherein oil cylinder and oil cylinder seat interference fit are formed an integral body, and the tooth axle is fixed in oil cylinder seat and the hole that oil cylinder passes through mutually with bearing and bearing cover.Plunger is a hollow cylinder.Be slidingly matched with cylinder wall, plunger one side has a tooth-arranging strip and the engagement of tooth axle, and the plunger left end has a hole, coaxial garden and integrated oil path valve outer wall to be slidingly matched.The blue end of its method was bonded on the oil cylinder left end cap when integrated oil path valve was installed, and main spring inserts in the cavity from the plunger right-hand member plunger is pushed up to the oil cylinder left end.Be full of hydraulic oil in the oil cylinder.Described integrated oil path valve comprises valve pocket, valve body, needle-valve core, silently and the hydraulic control two-way valve of being made up of steel ball, two-way valve body, little spring.Valve body, needle-valve core, silently, steel ball, two-way valve body, little spring be arranged in order and be loaded in the valve pocket.Described valve body is a Cylinder, its cylinder and valve pocket inner cylinder interference fits.There is an axial pass-through holes at the center, and there is a taper contraction front at the middle part, hole.The needle-valve core is installed in the hole, its top and taper contraction front composition ring-type restriction, this restriction left has valve body top fuel feed hole and middle part fuel feed hole that the axial pass-through holes at valve body center is communicated with oil cylinder successively, silently be loaded on the valve body right-hand member axial pass-through holes is blocked, but silently have several oil outlets that axial pass-through holes is communicated with oil cylinder on the side.Two-way valve body is the garden cylindricality, be slidingly matched with valve pocket, there is a hole at its center, the hole left end is the conical surface, form one way valve with steel ball, two-way valve body is gone up because of right-hand member contacts to be crushed on silently with little spring, one fuel feed hole is arranged at valve pocket right-hand member bottom, one side at valve pocket top has an oilhole, this hole is oil outlet at ordinary times, remove hydraulic pressure with hand and stop the Men Shiwei fuel feed hole, cavity is connected the groove of this oilhole by the valve body side with two-way valve body with silently, several two-way valve oil outlets are arranged on the valve pocket, covered by two-way valve scapus face at ordinary times, stop Men Shifang with hand releasing hydraulic pressure and be opened.

Accompanying drawing 1 is the front view of this door closer, and accompanying drawing 2 is its lateral views.Accompanying drawing 3 is hydraulic mechanism structural representations in the door closer, and accompanying drawing 4 is an integrated oil path valve arrangement detail drawing in the hydraulic mechanism.

(1) base among the figure, (2) connecting rod base, (3) lever regulated cover, (4) connecting rod, (5) rocking arm, (6) hydraulic mechanism, (7) oil cylinder seat, (8) tooth axle, (9) oil cylinder, (10) plunger, (11) main spring, (12) integrated oil path valve, (13) valve pocket, (14) valve pocket top oilhole, (15) needle-valve core, (16) needle-valve core tailing screw flight, (17) valve body top fuel feed hole, (18) valve body middle part fuel feed hole, (19) oil outlet of side silently, (20) silently, (21) two-way valve oil outlet, (22) two-way valve body, (23) steel ball, (24) little spring, (25) valve pocket bottom fuel feed hole, (26) doorframe, (27) door leaf, (28) valve body, (29) groove of valve body side, (30) oil cylinder headroom.

When this door closer uses, base (1) and connecting rod base (2) are separately fixed on door leaf (27) and the doorframe (26).Again oil cylinder seat (7) is fixed on the base (1).Be enclosed within the square hole of rocking arm (5) on the square toes of tooth axle (8) then and fix it, this moment connecting rod with doorframe as if out of plumb.Then unclamp the nut on hinge and the connecting rod of being connected of connecting rod (4) and rocking arm (5), it is vertical with doorframe that pivot link is regulated its length connecting rod when door leaf is closed.And tighten whole securing members.When opening door leaf with hand, connecting rod (4) drives the relative hydraulic mechanism (6) of rocking arm (5) and turns over an angle, tooth axle (8) and then rocking arm rotates and the plunger (10) that is engaged with is moved to the oil cylinder bottom, main spring (11) is compressed, the oil of oil cylinder bottom enters the integrated oil path valve by fuel feed hole (25), push steel ball (23) open, flow into oil cylinder headroom (30) from the groove (29) and the oil outlet (14) of valve body side, plunger moves to the oil cylinder bottom fuel feed hole (17) and (18) is in together in the oil cylinder top chamber.Decontrol door leaf, main spring elastic force oppositely moves at the oil cylinder top plunger (10), and steel ball (23) is sealed the two-way valve centre bore conical surface by the pressure of oil.Make this oil circuit obstructed, oil cylinder headroom (30) inner fluid can only enter valve body (28) by fuel feed hole (17), (18).Flow out from oil outlet (19) through the ring joint head piece, this moment, the closing velocity of door leaf was first closing velocity, rotation needle-valve core (15) can change flow by the ring joint head piece, control plunger translational speed, the Principles of Regulation of Here it is first closing velocity.When door is closed into to a certain degree, fuel feed hole (18) was blocked by plunger when for example opening angle was less than 25 °, only stay fuel feed hole (17) oil-feed, this moment, the closing velocity of door leaf was second closing velocity, because being arranged on the needle-valve core, one section imperfect cylinder and fuel feed hole (17) form meter in mechanism, after above-mentioned first speed mixes up, continuation is rotated needle-valve 45 ° of scopes, can change imperfect cylinder blocks the degree of fuel feed hole (17) and controls the flow that passes through, very little again to first speed influence simultaneously, the Principles of Regulation of Here it is second closing velocity.Because of this flow also flows into the oil cylinder bottom through the first speed ring-type restriction, so second speed is always less than first speed.When door leaf leaves greatlyyer, when for example opening angle reaches more than 92 °, plunger handle oil outlet (19) is blocked, because of the loop cuts off, door leaf just can rest on the enable possition on the spot, close power if apply one with hand this moment, therefore power is consistent with the elastic force direction of main spring (11), so oil cylinder top oil liquid pressure is increased, promote elastic force that two-way valve body overcomes little spring (24) along valve pocket (13) inwall to basal sliding, expose two-way valve oil outlet (21), the fluid of oil cylinder end space (30) is just by oilhole (14), the groove of valve body side (29), two-way valve oil outlet (21) is unimpeded with the oil cylinder bottom, door leaf gets final product quick closedown, and this is the principle that hydraulic pressure stops door and manually removes.When door leaf is open at 86 ° between 92 ° the time, plunger by chance can be sealed oil outlet (19), be obstructed in the loop, but because of the corresponding part of plunger capping oil outlet (19) has the very little triangle throttling channel in cross section, because of its damping action door leaf needs about 1.5 minutes approximately by 92 ° to 86 °, because speed is very low, outward appearance is motionless seemingly, time-delay closing principle that Here it is.

For this door closer all can be suitable on the left and right fan that opens the door, the tooth axle is made two ends square toes projecting shaft so that assemble with the rocking arm square hole, for for the purpose of attractive in appearance when the use one end spindle nose other end cover with cap.

The main spring of this door closer can save, and the door closer that saves main spring is applicable to that its function is identical with the door closer of installing main spring on the left and right unidirectional unlatching door of installing spring hinge.Obviously the effect of main spring is replaced by spring hinge at this moment.The oil cylinder of this door closer (9) can be made of aluminum pipe or seamless steel pipe, adopts the interference fit method to be embedded in the oil cylinder seat.When oil cylinder seat adopts aluminium alloys to make, but oil cylinder die casting in oil cylinder seat, when oil cylinder seat adopts casting pig, also can be in oil cylinder seat with oil cylinder direct pouring.

From the above mentioned, this fluid pressure type door closer closes Men Shiwu acceleration and impact, light and slow, the quiet nothing of moving is made an uproar, door leaf is opened to 0～25 °～86 ° two sections closing velocities, these two sections closing velocities all can be regulated, door leaf is opened to 86 °～92 ° to have time-delay closing function many people are once passed through calmly, door leaf can stop on the spot automatically 92 ° to 140 ° scopes, imposing the very little additional power of closing can close thereupon, recovers immediately with interior then automatic closing function to 86 ° as closing.This door closer structurally adopts the integrated oil path valve, repertoire loop and element design in a column tubule, the integrated oil path valve can be made separately, and available plastics replace metal, both simplify manufacturing process, reduced the consumption of metal again.

Claims

1. fluid pressure type door closer-holder, comprise base (1), connecting rod base (2), the adjustable connecting-rod that connecting rod cover (3) and connecting rod (4) are formed; a rocking arm (5) and a hydraulic mechanism (6); an end and the connecting rod base of adjustable connecting-rod are hinged; the small end of the other end and rocking arm is hinged; the square end of the square hole of the big end of rocking arm and hydraulic mechanism medium tooth shaft is fixed; hydraulic mechanism is fixed on the base, described hydraulic mechanism comprises oil cylinder seat (7); tooth axle (8); oil cylinder (9); plunger (10); main spring (11); integrated oil path valve (12); Described tooth axle is fixed in oil cylinder seat and the hole that oil cylinder passes through mutually with bearing and bearing cover, and its square end exposes; Plunger is a hollow cylinder, is slidingly matched with cylinder wall, and plunger one side has a tooth-arranging strip and the engagement of tooth axle, and the plunger left end has a coaxial circular hole and integrated oil path valve outer wall to be slidingly matched; The blue end of the method for integrated oil path valve is bonded on the oil cylinder left end cap; Main spring pushes up plunger to the oil cylinder left end in the cavity of plunger right-hand member insertion plunger, and the main spring other end is bearing on the oil cylinder right end cap, is full of hydraulic oil in the oil cylinder; It is characterized in that described integrated oil path valve comprises valve pocket (13), valve body (28), needle-valve core (15), silently (20) and the hydraulic control two-way valve be made up of steel ball (23), two-way valve body (22), little spring (24), described valve body, needle-valve core, silently, steel ball, two-way valve body, little spring be arranged in order and be loaded in the valve pocket; Described valve body is the garden cylindricality, its cylinder and valve pocket inner cylinder interference fits, there is an axial pass-through holes at the valve body center, there is a taper contraction front at the middle part, hole, the needle-valve core is installed in the hole, its top and taper contraction front composition ring-type restriction, this restriction left has valve body top fuel feed hole (17) successively, middle part fuel feed hole (18) is communicated with axial through hole in the valve body with oil cylinder, silently be loaded on the valve body right-hand member axial pass-through holes is blocked, several oil outlets (19) are silently arranged on the side; Two-way valve body is the garden cylindricality, is slidingly matched with valve pocket, and there is a hole at its center, and the hole left end is that the conical surface and steel ball are formed one way valve, and two-way valve body right-hand member contacts with little spring, is pressed in silently by little spring and goes up; One fuel feed hole (25) is arranged at valve pocket right-hand member bottom, one side at valve pocket top has an oilhole (14), the groove (29) of this hole by the valve body side is connected with cavity silently with two-way valve body, and there are several two-way valve oil outlets (21) the facial position of two-way valve scapus on the valve pocket.

2. hydraulic pressure door closer-holder as claimed in claim 1 is characterized in that not having main spring (11) in this device.

3. hydraulic pressure door closer-holder as claimed in claim 1 or 2 is characterized in that described oil cylinder (9) makes of aluminum pipe or seamless steel pipe, and interference fit is embedded in the oil cylinder seat.

4. hydraulic pressure door closer-holder as claimed in claim 1 or 2 is characterized in that described oil cylinder (9) makes of aluminum pipe or seamless steel pipe, and die casting is in the aluminium alloys oil cylinder seat.

5. hydraulic pressure door closer-holder as claimed in claim 1 or 2 is characterized in that described oil cylinder (9) with the seamless steel pipe making, casts in the oil cylinder seat of casting pig.