CN109930936A

CN109930936A - Hydraulic door-closer

Info

Publication number: CN109930936A
Application number: CN201910223468.XA
Authority: CN
Inventors: 陈招胜; 陆际泽
Original assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Current assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-06-25
Anticipated expiration: 2039-03-22
Also published as: CN109930936B

Abstract

The invention discloses a kind of hydraulic door-closers, it is related to door closer technical field, including shell, piston, drive end bearing bracket, rear end cap, cam, first check valve, second one-way valve, first rotating wheel and the second rotating wheel, the cavity for storing up full hydraulic oil is provided in shell, piston is set in cavity and is slidably and sealingly connected with inner walls, the first cavity is formed between piston and drive end bearing bracket, the second cavity is formed between piston and rear end cap, cam arrangement is between the first rotating wheel and the second rotating wheel, and it is inconsistent with the periphery of the first rotating wheel and the second rotating wheel respectively, arc Qi slot is offered on cam, when the door is closed, first rotating wheel is placed in arc Qi slot, the lug boss of second rotating wheel and cam contradicts, when door is opened into hard-over, first rotating wheel contacts at the side of nose of cam, second rotating wheel Contact at a side of arc Qi slot；It is light with switch gate sound, it improves it and uses the effect of operability.

Description

Hydraulic door-closer

Technical field

The present invention relates to door closer technical fields, more specifically, it relates to a kind of hydraulic door-closer.

Background technique

Door closer has been widely used in the every field of society as the necessary facility of modern building.With society Continuous development and progress, country requires higher and higher to fire-fighting, in terms of security protection, and many access doors, fire exit door all need installation to close Door device；Door closer is a hydraulic press for a upper spring-like, can be closed Men Zidong by discharging after compressing after door is opened On, play the role of as single or double acting door, it is ensured that after door is turned on, accurately, timely closes and arrive initial position.

The internal structure of door closer is the secret world of operating, a stable operation at any time；It is installed together with door closer There are also arm component, for arm component by being connected with the door closer axis on door closer, door closer axis currently on the market is usually tooth Wheel shaft, in opening door operation, door closer axis is rotated via arm component, by arm component come rotary teeth when switch gate Wheel makes contained spring compress the variation for leading to hydraulic oil.

But there is a problem that by the cooperation of gear and rack gear following, it can make to close the door during gear and rack-driving Sound is larger, closes the door stiff not laborsaving, for causing certain inadaptability in use process.

Summary of the invention

In view of the deficiencies of the prior art, the present invention intends to provide a kind of hydraulic door-closer, there is switch gate Sound is light, improves it and uses the effect of operability.

To achieve the above object, the present invention provides the following technical scheme that

A kind of hydraulic door-closer, including shell are provided with the cavity for storing up full hydraulic oil in the shell, are arranged in the cavity There is piston, and the piston is slidably and sealingly connected with the inner walls, is respectively arranged with drive end bearing bracket at the both ends of the cavity And rear end cap, it is formed with the first cavity between the piston and drive end bearing bracket, the second sky is formed between the piston and rear end cap Chamber is provided with the first check valve for flowing to hydraulic oil in the first cavity in the second cavity, described on the piston First through hole is offered on first cavity, the second through-hole is offered on second cavity, the first through hole is logical with second It is provided with the second one-way valve for flowing to hydraulic oil in the second cavity in the first cavity between hole, is arranged in the piston There is the cam for connection arm assembly, and the cam is rotationally connected in cavity, rotation is disposed with first on the piston Rotating wheel and the second rotating wheel, the cam arrangement rotate between the first rotating wheel and the second rotating wheel and respectively with first The periphery of wheel and the second rotating wheel is inconsistent, and arc Qi slot is offered on the cam, when the door is closed, described first turn Driving wheel is placed in the arc Qi slot, and the lug boss of second rotating wheel and the cam contradicts, when door is opened into maximum turn When angle, first rotating wheel contacts at the side of the nose of cam, and second rotating wheel contacts at the arc Qi A side of slot.

So set, when the door is closed, the first rotating wheel is placed in the arc Qi slot of cam, the second rotating wheel and cam Lug boss contradicts, and remains static；When the door is open, arm component band moving cam be in the first rotating wheel and the second rotating wheel it Between rotate, due to eccentric setting between rotation point and cam, piston is promoted be in sliding in cavity, piston is slided towards drive end bearing bracket direction Dynamic, the first cavity volume is gradually reduced, and the hydraulic oil in the first cavity is flow in the second cavity by the first check valve, is reached out The effect buffered when door has the light purpose of switch gate sound；When door is opened into hard-over, the first rotating wheel contacts at cam The side of lug boss, the second rotating wheel contact at a side of arc Qi slot, and the end face of piston towards the first cavity is supported with drive end bearing bracket Touching；When the external force acted on cam disappears, since the first rotating wheel contacts at the side of nose of cam, the second rotating wheel The a side for contacting at arc Qi slot, the force unbalance for being in its cam between the first rotating wheel and the second rotating wheel are made With promoting cam gradually to invert, the hydraulic oil in the second cavity passes through second one-way valve between first through hole and the second through-hole It is delivered in the first cavity, promoting piston to be in, cavity is interior and end cap direction is slided backwards, it is made to drive the arm component of axis connection It gradually tapers up, has the function that automatic door-closing；Stress between the first rotating wheel and the second rotating wheel is in by cam to act on, and is made Its piston is in cavity and reciprocatingly slides, and by the mobilization of hydraulic oil, has switch gate sound light, improves it and uses behaviour The effect for the property made.

Further setting: circular diameter locating for the arc Qi slot is greater than or equal to the wheel diameter of the first rotating wheel.

So set, when the door is closed, be placed in the arc Qi slot of cam by the first rotating wheel, the second rotating wheel with it is convex The lug boss of wheel contradicts, and makes it when closing in stable stationary state.

Further setting: installation cavity, first rotating wheel, the second rotating wheel and cam are offered in the piston It is arranged in the installation cavity, first check valve is set on an end face of piston, in the other end of the piston On offer the opening being connected with installation cavity.

So set, by the way that the first rotating wheel, the second rotating wheel and cam arrangement in the installation cavity of piston, are made it When piston is in cavity and moves, while through check valve and opening, be in hydraulic oil in installation cavity and flow, reaches pair First rotating wheel, the second rotating wheel and cam lubrication effect, improve its first rotating wheel, the second rotating wheel and cam it Between mutually contradict the rotating property of rotation.

Further setting: offering the recessing groove being connected with installation cavity on the circumferential side wall of the piston, described convex Wheel is connected with shaft, and the shaft is arranged in the recessing groove, and the shaft passes through the zanjon that is set in cavity Ball bearing is connect with housing into rotation.

So set, shaft is in rotation in cavity by deep groove ball bearing, and moves back and forth in recessing groove, realize Cam acts between the first rotating wheel and the second rotating wheel, its piston reciprocating is made to slide on the effect in cavity.

Further setting: bearing groove is offered on the inner wall of the cavity, the deep groove ball bearing is set to the axis It holds in slot.

So set, improving cam by the way that deep groove ball bearing to be set in bearing groove and being in rotational stability in cavity Effect.

Further setting: mounting groove is offered on the circumferential side wall of the shell, is fixedly installed in the mounting groove Shaft-cup with teeth, the cam are connected with drive shaft, and the drive shaft turns are simultaneously arranged in the tooth shaft lid.

So set, sealing the mounting groove on shell by tooth shaft lid, it connect its drive shaft with arm component, realization pair Cam is in the purpose rotated between the first rotating wheel and the second rotating wheel.

Further setting: the first sealing ring is arranged on the circumferential side wall of the tooth shaft lid.

So set, improving the sealing performance between tooth shaft lid and shell by the first sealing ring, hydraulic door-closer is improved The stability of work.

Further setting: the second sealing ring is arranged on the drive end bearing bracket and rear end cap.

So set, improving the sealing performance between drive end bearing bracket, rear end cap and shell by the second sealing ring, improve hydraulic The stability of door closer work.

Further setting: planar portions, shape between the planar portions and cavity are offered on the outer circumference surface of the piston At there is cushion chamber.

So set, making it form cushion chamber between cavity by planar portions, when piston is in cavity and slides, lead to The spatial content compression that cushion chamber reaches certain is crossed, piston is improved and is in the stability to reciprocatingly slide in cavity.

Further setting: clamping slot is offered in the outer surface of the shell, is opened on the side wall of the clamping slot Equipped with multiple installation lockholes.

So set, making its clamping slot be fixed on corresponding load by connecting corresponding locking member on installation lockhole On body, achieve the purpose that hydraulic door-closer is installed.

By using above-mentioned technical proposal, the present invention compares compared with the prior art, has the advantage that

1, when Dang Men is opened into hard-over, the side of nose of cam is contacted at by the first rotating wheel, the second rotating wheel supports It touches in a side of arc Qi slot, piston is contradicted towards the end face of the first cavity and drive end bearing bracket, is in the first rotating wheel by cam Stress acts between the second rotating wheel, is in its piston in cavity and reciprocatingly slides, and passes through the mobilization of hydraulic oil, tool There is switch gate sound light, improves it and use the effect of operability；

2, by in the installation cavity of piston, being in it in piston the first rotating wheel, the second rotating wheel and cam arrangement In cavity when movement, while by check valve and opening, so that hydraulic oil is in flowing in installation cavity, reach and rotated to first The effect of wheel, the second rotating wheel and cam lubrication, improves and mutually supports between its first rotating wheel, the second rotating wheel and cam Touch the rotating property of rotation；

3, shaft is in rotation in cavity by deep groove ball bearing, and moves back and forth in recessing groove, realizes that cam acts on It between first rotating wheel and the second rotating wheel, slides on its piston reciprocating in cavity, improves cam and be in the interior rotation of cavity surely Qualitatively effect；

4, so that it is formed cushion chamber between cavity by planar portions, when piston is in cavity and slides, reached by cushion chamber To certain spatial content compression, improves piston and be in the stability to reciprocatingly slide in cavity；

5, by setting the first sealing ring, the second sealing ring, the sealing between drive end bearing bracket, rear end cap, tooth shaft lid and shell is improved Performance, and then improve the stability of hydraulic door-closer work.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of hydraulic door-closer；

Fig. 2 is the cross-sectional view that hydraulic door-closer opens the door when in hard-over in the first one-way valve axis；

Fig. 3 is the cross-sectional view in hydraulic door-closer on first through hole axis；

Fig. 4 is the cross-sectional view in hydraulic door-closer convexity axle axis；

Structural schematic diagram when Fig. 5 is piston and camshaft cooperation；

Fig. 6 is the structural schematic diagram of camshaft in hydraulic door-closer；

Fig. 7 is structure sectional view of the hydraulic door-closer when closing door state.

In figure: 1, shell；11, cavity；12, the first cavity；13, the second cavity；14, cushion chamber；15, bearing groove；16, One through-hole；17, the second through-hole；18, mounting groove；19, clamping slot；191, lockhole is installed；2, piston；21, installation cavity；22, it puts down Face；23, pin shaft；24, it is open；25, recessing groove；3, drive end bearing bracket；4, rear end cap；5, camshaft；51, shaft；52, cam； 521, arc Qi slot；522, lug boss；53, drive shaft；54, tooth shaft lid；6, the first rotating wheel；7, the second rotating wheel；8, zanjon Ball bearing；9, the first check valve；10, second one-way valve.

Specific embodiment

Hydraulic door-closer is described further referring to attached drawing.

A kind of hydraulic door-closer, as depicted in figs. 1 and 2, including shell 1, piston 2, drive end bearing bracket 3,4, first turns of rear end cap Driving wheel 6, the second rotating wheel 7 and the camshaft 5 for connection arm assembly；Drive end bearing bracket 3 and rear end cap 4 are respectively arranged in shell 1 Two sides and cavity 11 for storing up full hydraulic oil is formed between shell 1；As shown in connection with fig. 3, piston 2 is arranged in cavity Be slidably and sealingly connected in 11 and with 1 inner wall of shell, make to be formed with the first cavity 12 between its piston 2 and drive end bearing bracket 3, piston 2 with The second cavity 13 is formed between rear end cap 4.

As shown in Figure 2, wherein installation cavity 21 is offered in piston 2, the first rotating wheel 6 and the second rotating wheel 7 pass through The rotation of pin shaft 23 being fixedly arranged in installation cavity 21 is arranged in installation cavity 21；To be in cavity 11 reciprocal convenient for piston 2 Sliding, offers planar portions 22, and cushion chamber 14 is formed between planar portions 22 and cavity 11 on the outer circumference surface of piston 2.

In conjunction with shown in fig. 4 to fig. 6, camshaft 5 includes the shaft 51 integrally set gradually, cam 52 and for linking arm The drive shaft 53 of component；Bearing groove 15 is offered on the inner wall of cavity 11, and deep groove ball bearing 8 is provided in bearing groove 15, Shaft 51 is rotated in cavity 11 by deep groove ball bearing 8.

As shown in Figures 4 to 6, cam 52 is arranged between the first rotating wheel 6 and the second rotating wheel 7 and respectively with first The periphery of rotating wheel 6 and the second rotating wheel 7 is inconsistent；Arc Qi slot 521, and arc are offered on the circumferential side wall of cam 52 Circular diameter locating for shape Qi slot 521 is greater than or equal to the wheel diameter of the first rotating wheel 6；As shown in connection with fig. 7, when the door is closed, The periphery of one rotating wheel 6 is placed in arc Qi slot 521, and the periphery of the second rotating wheel 7 is supported with the lug boss 522 of cam 52 Touching；As shown in connection with fig. 2, when door is opened into hard-over, the side of 52 lug boss 522 of cam contacts at the first rotating wheel 6 Periphery, a side of arc Qi slot 521 contact on the periphery of the second rotating wheel 7.

In conjunction with shown in fig. 4 to fig. 6, opening 24 is offered in the both ends of the surface of piston 2, in piston 2 towards 3 direction of drive end bearing bracket Opening 24 on be fixedly installed the first check valve 9 for flowing to hydraulic oil in the first cavity 12 in second cavity 13；? First through hole 16 is offered on first cavity 12, the second through-hole 17, and the second through-hole 17 and peace are offered on the second cavity 13 It behave affectedly and 21 is connected；Meanwhile it is provided between first through hole 16 and the second through-hole 17 for will be hydraulic in the second cavity 13 Second one-way valve 10 in oil stream to the first cavity 12.

In conjunction with shown in Fig. 5 and Fig. 6, symmetrical offer is opened on the circumferential side wall of piston 2 and is allowed with what installation cavity 21 was connected Position slot 25, shaft 51 and drive shaft 53 are respectively arranged in the recessing groove 25 of two sides；As shown in connection with fig. 4, on the side wall of shell 1 Mounting groove 18 is offered, tooth shaft lid 54 is fixedly installed in mounting groove 18, drive shaft 53 rotates and is arranged in tooth shaft lid 54.

It is in the leakproofness in cavity 11 to improve hydraulic oil, is arranged with first on the circumferential side wall of tooth shaft lid 54 respectively Sealing ring, is arranged with the second sealing ring on drive end bearing bracket 3 and rear end cap 4, realizes and the leakproofness that is fixedly connected between shell 1 Energy.

As shown in figure 4, being installed on carrier to improve shell 1, clamping slot 19 is offered in the outer surface of shell 1, Multiple installation lockholes 191 are offered on the side wall of clamping slot 19, passing through the installation realization of lockhole 191 by corresponding fixing piece will Shell 1 is fixedly installed in the purpose on carrier.

Working principle: when the door is closed, the first rotating wheel 6 is placed in the arc Qi slot 521 of cam 52, the second rotating wheel 7 It contradicts, remains static with the lug boss 522 of cam 52；When the door is open, arm component drives camshaft 5 to rotate, and keeps its convex Wheel 52, since 51 arranged off-centre of shaft is on cam 52, promotes to live in rotating between the first rotating wheel 6 and the second rotating wheel 7 The sliding in cavity 11 of plug 2, piston 2 are slided towards 3 direction of drive end bearing bracket, and 12 volume of the first cavity is gradually reduced, the first cavity 12 Interior hydraulic oil is first flow in installation cavity 21 by the first check valve 9, then flow to the second cavity 13 by the opening 24 on piston 2 It is interior, achieve the effect that buffer when enabling, there is the light purpose of switch gate sound；When door is opened into hard-over, the first rotating wheel 6 The side of 52 lug boss 522 of cam is contacted at, the second rotating wheel 7 contacts at a side of arc Qi slot 521, piston 2 towards first The end face of cavity 12 and drive end bearing bracket 3 contradict；When the external force acted on camshaft 5 disappears, since the first rotating wheel 6 contacts at The side of 52 lug boss 522 of cam, the second rotating wheel 7 contact at a side of arc Qi slot 521, its cam 52 is made to be in first Force unbalance effect between rotating wheel 6 and the second rotating wheel 7, promotes cam 52 gradually to invert, the liquid in the second cavity 13 Pressure oil is delivered in the first cavity 12 by the second one-way valve 10 between first through hole 16 and the second through-hole 17, promotes piston 2 In cavity 11 and 4 direction of end cap sliding backwards, the arm component for connecting its drive shaft 53 gradually taper up, and reach automatic door-closing Effect；Stress between the first rotating wheel 6 and the second rotating wheel 7 is in by cam 52 to act on, its piston 2 is made to be in cavity 11 It inside reciprocatingly slides, and by the mobilization of hydraulic oil, has switch gate sound light, improve it and use the effect of operability.

The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of hydraulic door-closer, including shell (1), it is characterised in that: be provided with the sky for storing up full hydraulic oil in the shell (1) Chamber (11) is provided with piston (2) in the cavity (11), and the piston (2) and the shell (1) inner wall are slidingly sealed company It connects, is respectively arranged with drive end bearing bracket (3) and rear end cap (4) at the both ends of the cavity (11), the piston (2) and drive end bearing bracket (3) Between be formed with the first cavity (12), the second cavity (13) are formed between the piston (2) and rear end cap (4), in the work The first check valve (9) for flowing to the first cavity (12) interior hydraulic oil in the second cavity (13) is provided on plug (2), in institute It states and offers first through hole (16) on the first cavity (12), offer the second through-hole (17), institute on second cavity (13) It states and is provided between first through hole (16) and the second through-hole (17) for the second cavity (13) interior hydraulic oil to be flow to the first cavity (12) second one-way valve (10) in is disposed with the cam (52) for connection arm assembly in the piston (2), and described convex Wheel (52) is rotationally connected in cavity (11), and rotation is disposed with the first rotating wheel (6) and the second rotating wheel on the piston (2) (7), the cam (52) be arranged between the first rotating wheel (6) and the second rotating wheel (7) and respectively with the first rotating wheel (6) It is inconsistent with the periphery of the second rotating wheel (7), arc Qi slot (521) is offered on the cam (52), when the door is closed, First rotating wheel (6) is placed in the arc Qi slot (521), and second rotating wheel (7) is convex with the cam (52) It plays portion (522) to contradict, when door is opened into hard-over, first rotating wheel (6) contacts at the cam (52) lug boss (522) side, second rotating wheel (7) contact at a side of the arc Qi slot (521).

2. hydraulic door-closer according to claim 1, it is characterised in that: circular diameter locating for the arc Qi slot (521) More than or equal to the wheel diameter of the first rotating wheel (6).

3. hydraulic door-closer according to claim 1, it is characterised in that: offer installation cavity in the piston (2) (21), first rotating wheel (6), the second rotating wheel (7) and cam (52) are arranged in the installation cavity (21), described First check valve (9) is set on an end face of piston (2), is offered on the other end of the piston (2) and installation cavity (21) opening (24) being connected.

4. hydraulic door-closer according to claim 3, it is characterised in that: opened up on the circumferential side wall of the piston (2) There is the recessing groove (25) being connected with installation cavity (21), the cam (52) is connected with shaft (51), the shaft (51) It is arranged in the recessing groove (25), and the shaft (51) passes through the deep groove ball bearing (8) and shell that are set in cavity (11) Body (1) rotation connection.

5. hydraulic door-closer according to claim 4, it is characterised in that: offer axis on the inner wall of the cavity (11) It holds slot (15), the deep groove ball bearing (8) is set in the bearing groove (15).

6. hydraulic door-closer according to claim 1, it is characterised in that: opened up on the circumferential side wall of the shell (1) There are mounting groove (18), is fixedly installed tooth shaft lid (54) in the mounting groove (18), the cam (52) is connected with drive shaft (53), the drive shaft (53) rotates and is arranged in the tooth shaft lid (54).

7. hydraulic door-closer according to claim 6, it is characterised in that: covered on the circumferential side wall of the tooth shaft lid (54) Equipped with the first sealing ring.

8. hydraulic door-closer according to claim 1, it is characterised in that: on the drive end bearing bracket (3) and rear end cap (4) It is arranged with the second sealing ring.

9. hydraulic door-closer according to claim 1, it is characterised in that: opened up on the outer circumference surface of the piston (2) Have planar portions (22), is formed with cushion chamber (14) between the planar portions (22) and cavity (11).

10. hydraulic door-closer according to claim 1, it is characterised in that: offer card in the outer surface of the shell (1) Access slot mouth (19) offers multiple installation lockholes (191) on the side wall of the clamping slot (19).