CN201326332Y - Door closer - Google Patents
Door closer Download PDFInfo
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- CN201326332Y CN201326332Y CNU2008201811827U CN200820181182U CN201326332Y CN 201326332 Y CN201326332 Y CN 201326332Y CN U2008201811827 U CNU2008201811827 U CN U2008201811827U CN 200820181182 U CN200820181182 U CN 200820181182U CN 201326332 Y CN201326332 Y CN 201326332Y
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- pull bar
- door
- cylinder body
- hydraulic oil
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Abstract
The utility model relates to a door closer, which comprises a driving component and a hydraulic damper component, wherein the hydraulic damper component comprises a damper seat which is installed on a door sash or on the wall which is close to the door and a hydraulic damper which facilitates the automatic closing of the door; one end of the hydraulic damper is hinged with the damper seat, and is characterized in that the driving component comprises a lever which is installed on the damper seat through a supporting point shaft in a rotation way; and one end of the lever and a pulling rod which extends out from one end which is opposite to the hinge end of the hydraulic damper are hinged with a connection rod, and one end of the connection rod is hinged with one end which is away from the pulling rod of the lever, and the other end is hinged with the door sash or on the wall which is close to the door. The door closer is not only applicable to the door sash with light weight, but also is applicable to the door sash with heavy weight, and has good hand touching feeling.
Description
Technical field
The utility model relates to a kind of door closer.Specifically a kind of door closer that has hydraulic damper.
Background technology
Door closer is a kind of general device that door is closed automatically of using, and at present modal is door closer.Its basic structure can be divided into damper assembly and driven unit, damper assembly generally includes parts such as piston, hydraulic chamber, spring, and the hydraulic oil in motion of driven unit driven plunger described in the process that door is opened and extruding hydraulic chamber flows to the opposite side cavity from a side cavity of piston; In the process that door is closed, piston slowly moves under the effect of spring restoring force door is closed automatically.For example, Chinese patent literature CN2806709Y discloses another door closer, comprise hydraulic chamber, piston, back-moving spring and pull bar, by the pull bar rotating shaft, the rotation of rotating shaft makes drag-line pulling piston move, the restoring force of back-moving spring makes piston move when closing the door, and from by the drag-line rotating shaft, and then drives the pull bar motion.But, because in actual applications, if the overall volume of door closer is too big, will take bigger space, inconvenience and attractive in appearance inadequately is installed; Therefore the diameter of above-mentioned door closer rotating shaft can not be done very greatly, could make rotating shaft produce bigger moment so need apply bigger active force.Under the heavier situation of door leaf, must use the bigger back-moving spring of coefficient of elasticity can guarantee that just door leaf can cut out automatically, could open door thereby need apply bigger power when causing opening the door, the feel of opening the door is bad; This makes that the scope of application of above-mentioned door closer is smaller, only limits to the low weight door leaf of weight.
The utility model content
For this reason, technical problem to be solved in the utility model is to provide a kind of and is not only applicable to the lighter door leaf of weight, and also is applicable to heavier door leaf, the door closer of the good hand touch of opening the door.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solution: a kind of door closer, comprise driven unit and hydraulic damper assembly, described hydraulic damper assembly comprises that one is installed on door leaf or is used to a hydraulic damper that door is slowly closed automatically near the damper seat on one of wall of door and one, and an end of described hydraulic damper and described damper seat are hinged; Described driven unit comprises:
Rotate the lever that is installed on the described damper seat by a fulcrum shaft, an end of described lever is hinged from the pull bar that the relative end of above-mentioned hinged end stretches out with described hydraulic damper;
A connecting rod, one end and described lever are hinged away from an end of described pull bar, and the other end is hingedly mounted on door leaf or another of wall near door.
Above-mentioned door closer, described lever comprise a cross-shaped part and a connecting rod; Described cross-shaped part comprises an axis of rotation part and is connected first connecting portion and second connecting portion at described axis of rotation part middle part; Described first connecting portion is fixedlyed connected with described connecting rod, and described second connecting portion and described pull bar are hinged; The two ends of described axis of rotation part are installed on the described damper seat by bearing pin respectively, constitute described fulcrum shaft.
Above-mentioned door closer, described connecting rod comprises first connecting rod and second connecting rod; Described first connecting rod and described second connecting rod one end by an adjusting nut adjustable length link together; The other end of described first connecting rod is hinged with the spike on one of wall that is installed on door leaf or close door; The other end of described second connecting rod and described connecting rod are hinged.
Above-mentioned door closer, described hydraulic damper comprises
A cylinder body, described cylinder body has at least one openend;
Cylinder body covers, and seals the openend of described cylinder body, to form sealed chamber in described cylinder body, forms through hole on the end face of one of them described cylinder body lid;
The through hole that a pull bar, one end pass on the end face of described cylinder body lid stretches in the described cylinder body;
A piston is installed in described pull bar and stretches on the end in the described cylinder body, and described sealed chamber is divided into two parts, and can be along described inboard wall of cylinder block back and forth movement hermetically; And
A biasing member is arranged between described piston and the described cylinder body, to described piston provide along described Boring mill to the answer biasing force;
Described piston is provided with circulation one way valve and current-limiting apparatus, described circulation one way valve limits in the second portion of described sealed chamber that hydraulic oil in the described sealed chamber can only flow to described piston opposite side in the first of the described sealed chamber of described piston one side, and described current-limiting apparatus limits the flow rate of hydraulic oil between two parts of described sealed chamber.
Exceed opening or allow the direction of liquid flow and the opposite Check valve of current limiter of direction of described circulation one way valve permission liquid flow of above-mentioned door closer, described current-limiting apparatus.
Above-mentioned door closer, described biasing member are the back-moving spring that is arranged between described piston and the described cylinder body lid.
Above-mentioned door closer, described piston comprises
Piston only, described piston only have a cylinder side wall and are arranged on the next door of described cylinder side wall middle part radial arrangement, and described next door is provided with described circulation one way valve and described current-limiting apparatus; And
Described circulation one way valve comprises first valve opening of the part taper that is molded on the described next door, be arranged on the valve ball in described first valve opening, first piston lid on end that is fixedly installed on described piston only with through hole, and be arranged on spring between described first piston lid and the described valve ball;
Be provided with a slit that is used for the hydraulic oil circulation between described first piston lid and the described next door.
Above-mentioned door closer, described pull bar covers by being fixedly attached to described first piston, is connected with described piston; The described through hole that described first piston covers is to be arranged on the hydraulic oil channel that described pull bar closes on an end of described first piston lid, and an end of described hydraulic oil channel is communicated with corresponding described sealed chamber by the sidewall of described pull bar; The other end of described hydraulic oil channel is communicated with the slit that is used for the hydraulic fluid circulation between described first piston lid and the described next door.
Above-mentioned door closer, described current-limiting apparatus comprises second valve opening of the part taper that is molded on the described next door, the tapered direction of described second valve opening is opposite with the tapered direction of described first valve opening, be arranged on the valve ball in described second valve opening, second piston cap on other end that is fixedly installed on described piston only with through hole, and be arranged on spring between described second piston cap and the described valve ball;
Be provided with a slit that is used for the hydraulic fluid circulation between described second piston cap and the described next door.
Above-mentioned door closer, described pull bar is connected with described piston by being fixedly attached on described first piston lid or described second piston cap; Described through hole on described first piston lid or described second piston cap is to be arranged on the hydraulic oil channel that described pull bar closes on an end of described piston, and an end of described hydraulic oil channel is communicated with corresponding described sealed chamber by the sidewall of described pull bar; The other end of described hydraulic oil channel is communicated with the slit that is used for the hydraulic oil circulation between described first piston lid or described second piston cap and the described next door.
Above-mentioned door closer, described cylinder body lid comprises seal cover and fixed cap; Be provided with sealing ring between the inner surface of described seal cover external surface and described cylinder ends corresponding position; The external surface of described fixed cap inner surface and described cylinder ends corresponding position is provided with screw thread, so that described fixed cap fixes with the corresponding end thread of described cylinder body, and described seal cover is pressed in the corresponding end of described cylinder body.
Above-mentioned door closer, in forming the described cylinder body lid of through hole, also comprise pull bar sealed screw cover and pull bar sealing ring, the through hole of described seal cover has radially inwardly outstanding boss near an end parts of described sealed chamber, and be provided with the internal thread that matches with the external screw thread of described pull bar sealed screw cover away from the inwall of an end parts of described sealed chamber, described pull bar sealing ring is between described pull bar sealed screw cover and described seal cover, along with described pull bar sealed screw cover is tightened towards described seal cover, described pull bar sealing ring forms the sealing between described pull bar and described pull bar sealed screw cover and the seal cover.
Technique scheme of the present utility model has the following advantages compared to existing technology: the pull bar motion that (1) the utility model door closer is connected with piston by connecting rod and lever actuated, thereby the driven plunger motion, described lever is installed on the damper seat by a fulcrum shaft rotation; Therefore for heavier door leaf, do not need back-moving spring to have very big coefficient of elasticity and just can realize that door leaf cuts out automatically, and the active force that need be applied on the door leaf when opening the door to be also smaller, feel is relatively good; Described lever comprises a cross-shaped part and a connecting rod, makes lever easy for installation, and production and processing is more convenient; Described connecting rod comprises first connecting rod and second connecting rod, makes the length of described connecting rod to regulate, and can adjust according to door leaf with near the wall distance between the two of door leaf.(2) the hydraulic damper assembly of the utility model door closer mainly comprises a hydraulic damper, makes that the overall structure of door closer is simple, is convenient to large-scale production, handling ease, reduces production costs.(3) described hydraulic damper makes overall structure fairly simple because circulation one way valve and current-limiting apparatus are set on described piston, and the glide path of hydraulic oil is also fairly simple, and production and processing is easy.(4) described current-limiting apparatus adopts Check valve of current limiter, can more accurately regulate and control the size of hydraulic oil to described piston damping action when being convenient to production and processing, better by the described piston of design control slowly, mildly return; Thereby make it possible to accurately regulate and the control speed of closing the door, make door can be slow, soft and hommization ground close automatically.(5) structure that hydraulic oil channel is set in the structure that is connected with piston by piston cap of pull bar and the pull bar makes that the hydraulic damper structure of the utility model door closer is compact more, is convenient to the integrally-built miniaturization of door closer.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of the hydraulic damper of the utility model door closer;
Fig. 2 is the another kind of structural representation of the hydraulic damper of the utility model door closer shown in Figure 1;
Fig. 3 is the another kind of structural representation of the hydraulic damper of the utility model door closer shown in Figure 1;
Fig. 4 is the another kind of structural representation of the hydraulic damper of the utility model door closer;
Fig. 5 is the another kind of structural representation of the hydraulic damper of the utility model door closer shown in Figure 4;
Fig. 6 is the structural representation of cross section of piston of the hydraulic damper of Fig. 1 and the utility model door closer shown in Figure 4;
Fig. 7 is the structural representation of longitudinal section of piston of the hydraulic damper of the utility model door closer shown in Figure 1;
Fig. 8 is the structural representation of another kind of longitudinal section of piston of the hydraulic damper of the utility model door closer shown in Figure 4;
Fig. 9 is the structural representation of another kind of longitudinal section of piston of the hydraulic damper of the utility model door closer shown in Figure 4;
Figure 10 is the structural representation of another kind of longitudinal section of piston of the hydraulic damper of the utility model door closer shown in Figure 1;
Figure 11 is the another kind of structural representation of the hydraulic damper of the utility model door closer shown in Figure 4;
Figure 12 is the structural representation of the utility model door closer door opening state;
The close the door structural representation of state of Figure 13 the utility model door closer;
The structural representation of the driven unit of Figure 14 the utility model door closer.
Reference numeral is expressed as among the figure: 1-pull bar termination, 2-pull bar, 3-back-moving spring, 4-first piston lid, 5-sealing ring, 6-piston only, 7-second piston cap, 8-left side fixed cap, 9-pull bar sealed screw cover, 10-left side seal cover, 11-pull bar sealing ring, 12-cylinder body, 13-right side fixed cap, 14-right side seal cover, 151-current limliting through hole, 152-Check valve of current limiter, the 16-one way valve that circulates, the 17-valve ball, the 18-hydraulic oil channel, 19-spring, 20-hydraulic damper, the 21-cross-shaped part, 211-first connecting portion, 212-second connecting portion, 213-axis of rotation part, 22-connecting rod, 231-first connecting rod, the 232-second connecting rod, 24-adjusting nut, 25-spike, 26-damper seat, 27-termination, 28-pivot pin, the 29-door leaf, the 30-wall.
The specific embodiment
As Figure 12-shown in Figure 14, the door closer of present embodiment comprises driven unit and hydraulic damper assembly.Described driven unit comprises: be installed on lever on the damper seat 26 by the rotation of fulcrum shaft, an end of described lever and described hydraulic damper 20 are hinged from the pull bar termination 1 of the pull bar 2 that the relative end of above-mentioned hinged end stretches out; A connecting rod, one end and described lever are hinged away from an end of described pull bar 2, and the other end is hingedly mounted on the door leaf.As shown in figure 14, in the present embodiment, described lever comprises a cross-shaped part 21 and a connecting rod 22; Described cross-shaped part 21 comprises an axis of rotation part 213 and is connected first connecting portion 211 and second connecting portion 212 at described axis of rotation part 213 middle parts; Described first connecting portion 211 is fixedlyed connected with described connecting rod 22, and described second connecting portion 212 and described pull bar 2 are hinged; The two ends of described axis of rotation part 213 are installed on the described damper seat 26 by bearing pin respectively, constitute described fulcrum shaft.Described connecting rod comprises first connecting rod 231 and second connecting rod 232; The inner surface of the external surface of described first connecting rod 231 1 ends and described second connecting rod 232 1 ends has the screw thread that matches, both by adjusting nut 24 adjustable lengths link together, make the length of connecting rod to regulate according to the actual needs; The termination 27 of the other end of described first connecting rod 231 is hinged with the spike 25 on one of wall that is installed on door leaf or close door by pivot pin 28; The termination of the other end of described second connecting rod 232 is hinged by pivot pin 28 and described connecting rod 22.Described hydraulic damper assembly comprises that one is installed near the damper seat 26 on the wall of door and a hydraulic damper 20 that is used to make door slowly to close automatically, and an end of described hydraulic damper 20 and described damper seat 26 are hinged.The structure of described hydraulic damper 20 such as Fig. 1, Fig. 2, Fig. 3, Fig. 6 and shown in Figure 7 comprise cylinder body 12, pull bar 2 and piston, and described cylinder body 12 has two openends.Wherein said cylinder body 12 right openings ends seal with right side cylinder body lid, described cylinder body lid comprises right side fixed cap 13 and 14 sealings of right side seal cover, the right-hand member of described right side seal cover 14 forms radially outward outstanding flange, is provided with sealing ring 5 between the inner surface of described right side seal cover 14 external surfaces and described cylinder body 12 end corresponding positions; The external surface of described right side fixed cap 13 inner surfaces and described cylinder body 12 end corresponding positions is provided with screw thread, so that right side fixed cap 13 is fixed with the corresponding end thread of described cylinder body 12, and form the cooperating of end of radially outward outstanding described flange and described cylinder body 12 right openings ends by the right-hand member of described right side seal cover 14, described right side seal cover 14 is pressed in described cylinder body 12 right parts.Described cylinder body 12 left side openends are formed the left side cylinder body lid sealing of through hole on the end face.In described cylinder body 12, form sealed chamber like this.Described left side cylinder body lid comprises left side seal cover 10, left side fixed cap 8, forms externally threaded pull bar sealed screw cover 9, pull bar sealing ring 11; The left end of described left side seal cover 10 forms radially outward outstanding flange, is provided with sealing ring 5 between the inner surface of described left side seal cover 10 external surfaces and described cylinder body 12 end corresponding positions; The external surface of described left side fixed cap 8 inner surfaces and described cylinder body 12 end corresponding positions is provided with screw thread, so that described left side fixed cap 8 is fixed with the corresponding end thread of described cylinder body 12, and form the cooperating of end of radially outward outstanding described flange and described cylinder body 12 left side openends by the right-hand member of described left side seal cover 10, described left side seal cover 10 is pressed in described cylinder body 12 left parts; The through hole of described left side seal cover 10 has radially inwardly outstanding boss near an end parts of described sealed chamber, and be provided with the internal thread that matches with the external screw thread of described pull bar sealed screw cover 9 away from the inwall of an end parts of described sealed chamber, described pull bar sealing ring 11 is between described pull bar sealed screw cover 9 and described left side seal cover 10, along with described pull bar sealed screw cover 9 is tightened towards described left side seal cover 10, described pull bar sealing ring 11 form described pull bars 2 and described pull bar sealed screw overlap 9 and left side seal cover 10 between sealing.Described piston comprises piston only 6, circulation one way valve 16 and current-limiting apparatus; Described piston only 6 has a cylinder side wall and is arranged on the next door of described cylinder side wall middle part radial arrangement, and described next door is provided with described circulation one way valve 16 and described current-limiting apparatus; Described circulation one way valve 16 comprises four first valve openings that are molded over the part taper on the described next door, be arranged on the valve ball 17 in described first valve opening, first piston lid 4 on end that is fixed on described piston only 6 by being threaded with through hole, and be arranged on spring 19 between described first piston lid 4 and the described valve ball 17, be provided with one between described first piston lid 4 and the described next door and be used for the slit that hydraulic oil circulates; Described current-limiting apparatus comprises second valve opening that is molded over the part taper on the described next door, the tapered direction of described second valve opening is opposite with the tapered direction of described first valve opening, be arranged on the valve ball 17 in described second valve opening, second piston cap 7 on other end that is fixedly installed on described piston only 6 by being threaded with through hole, and be arranged on spring 19 between described second piston cap 7 and the described valve ball 17, be provided with a slit that is used for the hydraulic fluid circulation between described second piston cap 7 and the described next door.One end of pull bar 2 passes described left side fixed cap 8 successively, left side seal cover 10 and pull bar sealed screw cover 9, pull bar sealing ring 11 stretches in the described cylinder body 12 and to cover 4 with described first pistons and fixedly connected by screw thread, thereby realize being connected with described piston, the end that described pull bar 2 closes on described piston is provided with hydraulic oil channel 18, the sidewall of one end of described hydraulic oil channel 18 by described pull bar 2 is communicated with described pull bar 2 residing sealed chamber, the other end of described hydraulic oil channel 18 be communicated with described first piston cover 4 and described next door between be used for the slit that hydraulic oil circulates.The back-moving spring 3 of described in the present embodiment biasing member for being provided with in the cylinder body between described second piston cap 7 and described right side seal cover 14, the length of preferred back-moving spring 3 is poor more than or equal to the length of described sealed chamber and described piston axial length, make hydraulic damper work better and play a role, the diameter of preferred described back-moving spring 3 is slightly less than the internal diameter of described cylinder body 12, directly places described cylinder body 12 so that described back-moving spring 3 two ends need not be fixed.
As shown in Figure 2, when door is opened, the described pull bar 2 of lever actuated that described cross-shaped part 21 and connecting rod 22 are formed, by pull bar 2 make piston to the right seal cover 14 directions move and compression reseting spring 3, valve ball 17 in the hydraulic oil extruding circulation one way valve 16 between piston and the right side seal cover 14 in the sealed chamber makes it to compress spring 19, and then open through hole, hydraulic oil enters hydraulic oil channel 18 by the slit between first piston lid 4 and the compartment, enters the sealed chamber between piston and the left side seal cover 10 at last; And the valve ball in the Check valve of current limiter 152 is subjected to the extruding of hydraulic oil, thereby the through hole on the shutoff compartment can not pass through hydraulic oil.As shown in Figure 3, when door is closed, under the effect of back-moving spring 3, piston slowly and mildly along Boring mill to the left seal cover 10 move, valve ball in the hydraulic oil extruding circulation one way valve 16 between piston and the left side seal cover 10 in the sealed chamber, thereby the through hole on the shutoff compartment can not pass through hydraulic oil from circulation one way valve 16; And the valve ball 17 in the Check valve of current limiter 152 is subjected to the extruding of hydraulic oil, compression spring 19, and then open through hole, the hydraulic oil between piston and the left side seal cover 10 in the sealed chamber can only pass through slit between hydraulic oil channel 18, Check valve of current limiter 152, second piston cap 7 and the compartment successively and enter in the sealed chamber between piston and the right side seal cover 14.
Therefore, pull bar 2 motions that the utility model door closer is connected with piston by connecting rod and lever actuated, thereby driven plunger motion, described lever is installed on the damper seat 26 by a fulcrum shaft rotation; Therefore for heavier door leaf, do not need back-moving spring 3 to have very big coefficient of elasticity and just can realize that door leaf cuts out automatically, and the active force that need be applied on the door leaf when opening the door to be also smaller, feel is relatively good; Described lever comprises a cross-shaped part 21 and a connecting rod 22, makes lever easy for installation, and production and processing is more convenient; Described connecting rod comprises first connecting rod 231 and second connecting rod 232, makes the length of described connecting rod to regulate, and can adjust according to door leaf with near the wall distance between the two of door leaf.When piston is along the described back-moving spring 3 of described cylinder body 12 axial compression under external force, circulation one way valve 16 is all opened, hydraulic oil flow to sealed chamber between piston and the left side seal cover 10 from the sealed chamber between piston and the right side seal cover 14 with comparalive ease, this moment, hydraulic oil was less to the damping action of piston, and less external force can make piston move; After removing external force, circulation one way valve 16 Close Alls, Check valve of current limiter 152 is opened, hydraulic oil is relatively difficult from the sealed chamber that the sealed chamber between piston and the left side seal cover 10 flow between piston and the right side seal cover 14, this moment, hydraulic oil was bigger to the damping action of piston, thereby realized that piston slowly, mildly reset.Hydraulic damper 20 handling eases that present embodiment is used, simple in structure, can accurately regulate and control the size of hydraulic oil to described piston damping action, according to the described hydraulic damper 20 concrete occasion differences of using, can be by quantity of regulating circulation one way valve 16 and Check valve of current limiter 152 and the aperture that allows hydraulic oil to pass through, thereby accurately regulate and control the size of hydraulic oil to described piston damping action, and removing the external force that is applied on the described pull bar, when back-moving spring 3 provides along the axial elastic force of described cylinder body 12 to described piston, make described piston slow, mildly return.In the present embodiment, described current-limiting apparatus is a Check valve of current limiter 152, described Check valve of current limiter 152 allows the direction of liquid flow to allow the direction of liquid flow opposite with described circulation one way valve 16, make it possible to more accurately regulate and control the size of hydraulic oil to described piston damping action, and removing the external force that is applied on the described pull bar 2, back-moving spring 3 when described piston provides along the axial back stretch of described cylinder body 12, controlling described piston better slowly, mildly return.In addition, described circulation one way valve 16 and Check valve of current limiter 152 are made of valve opening and the spring 19 and the valve ball 17 that are arranged in the valve opening, make it possible to more accurately control amount, thereby more accurately regulate and control the size of hydraulic oil described piston damping action through the hydraulic oil of valve opening.According to the needs of actual installation, in some other embodiment, described damper seat 26 can be installed on the door leaf, and an end of described connecting rod and described lever are hinged away from an end of described pull bar 2, and the other end is hingedly mounted on the wall of close door; Equally also can realize purpose of the present invention.
In the utility model, the structure of described hydraulic damper 20 can also be as Figure 11, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 8.At this, and a difference of the described hydraulic damper 20 of the foregoing description is that back-moving spring 3 is arranged between piston and the left side seal cover 10; The another one difference is that conversion has taken place structure of piston, thereby make the flow direction of the hydraulic oil that circulation one way valve 16 and Check valve of current limiter 152 allow and the structure of first piston lid 4 and second piston cap 7 that variation also take place, described pull bar 2 is fixedlyed connected by screw thread with second piston cap 7, and all the other are all identical.
As shown in Figure 4, when door is opened, connecting rod and lever actuated pull bar 2 make piston to the left seal cover 10 directions move and compression reseting spring 3, hydraulic oil between piston and the left side seal cover 10 in the sealed chamber enters slit between second piston cap 7 and the compartment by hydraulic oil channel 18, and then the valve ball 17 in the extruding circulation one way valve 16 makes it to compress spring 19, open through hole, thereby hydraulic oil enters the sealed chamber between piston and the right side seal cover 14; And the valve ball 17 in the Check valve of current limiter 152 is subjected to the extruding of hydraulic oil, thereby the through hole on the shutoff compartment can not pass through hydraulic oil.As shown in Figure 5, when door is closed, under the effect of back-moving spring 3, piston slowly and mildly along Boring mill to the right seal cover 14 move, valve ball 17 in the hydraulic oil extruding circulation one way valve 16 between piston and the right side seal cover 14 in the sealed chamber, thereby the through hole on the shutoff compartment can not pass through hydraulic oil from circulation one way valve 16; And the valve ball 17 in the Check valve of current limiter 152 is subjected to the extruding of hydraulic oil, thereby compression spring 19, and then open through hole, the hydraulic oil between piston and the right side seal cover 14 in the sealed chamber can only be successively enters in the sealed chamber between piston and the left side seal cover 10 through slit, hydraulic oil channel 18 between slit, Check valve of current limiter 152, second piston cap 7 and the compartment between first piston lid 4 and the compartment.Because above-mentioned variation has taken place in the structure of hydraulic damper 20, can adopt multiple means, position relation between the pin joint three of pin joint, described hydraulic damper 20 and described damper seat by the axis of rotation of adjusting described lever, described lever and described hydraulic damper 22 makes that the biasing force of back-moving spring 3 generations can make door leaf close automatically door is opened after.For example, described second connecting portion 212 that can be by changing described cross-shaped part 21 and the angle between described first connecting portion 211 and with the annexation of described pull bar 2 realize door open after the biasing force of back-moving spring 3 generations door leaf cuts out automatically; Also can by regulate described hydraulic damper 20 and described damper seat 26 pin joints with respect to the relative position of described cross-shaped part 21 realize door open after the biasing force of back-moving spring 3 generations door leaf cuts out automatically.
In the utility model, the described piston that described hydraulic damper 20 uses also can be a structure as shown in figure 10, the described current-limiting apparatus opening 151 that exceeds, during compression reseting spring 3, hydraulic oil flows to the seal chamber of the opposite side of piston simultaneously from circulate one way valve 16 and current limliting through hole 151, described second piston cap 7 can not have yet, and this spline structure is simple more, processing is more prone to.The described piston that the described hydraulic damper 20 of door closer described in the utility model uses can also be a structure as shown in Figure 9, the described current-limiting apparatus opening 151 that exceeds, hydraulic oil flow to the seal chamber of the opposite side of piston simultaneously from circulation one way valve 16 and current limliting through hole 151.Make remove the external force that is applied on the described pull bar 2, biasing member to described piston provide along described Boring mill to the answer biasing force time, hydraulic oil only enters in the sealed chamber of described piston opposite side by described current limliting through hole 151, make that described structure of piston is simpler, be more prone to processing.Can accurately regulate and control the size of hydraulic oil equally to described piston damping action, and removing the external force that is applied on the described pull bar 2, biasing member when described piston provides along the axial answer biasing force of described cylinder body 12, making described piston slowly, mildly return.In addition, also can be according to the occasion difference of concrete application, by quantity of regulating circulation one way valve 16 and current limliting through hole 151 and the aperture that allows hydraulic oil to pass through, thereby accurately regulate and control the size of hydraulic oil to described piston damping action, and removing the external force that is applied on the described pull bar 2, biasing member when described piston provides along the axial answer biasing force of described cylinder body 12, making described piston slowly, mildly return.
In addition, the described cylinder body lid of described hydraulic damper 20 can also adopt another kind of replacement form.In this replacement embodiment, seal cover forms external screw thread near the part of described cylinder body 12 ends, and the screw-internal thread fit of itself and described cylinder body 12 end corresponding sites directly is fixed on the end of described cylinder body 12.Described seal cover exposes described cylinder part and has radially outstanding flange, so that be pressed on when fastening on the ora terminalis of described cylinder body 12, is provided with and other parts connection structure connecting on the described seal cover.Such structure can be saved the fixed cap parts.Have, a replacement form of described cylinder body 12 is that described cylinder body 12 an only end has opening again, the other end is the blind hole end, arranged outside and other parts connection structure connecting at described blind hole end can reduce number of components and parts like this, and structure can be more succinct.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model claim.
Claims (12)
1. door closer, comprise driven unit and hydraulic damper assembly, described hydraulic damper assembly comprises that one is installed on door leaf or is used to make the slow hydraulic damper (20) of closing automatically of door near the damper seat (26) on one of wall of door and one, and an end of described hydraulic damper (20) and described damper seat (26) are hinged; It is characterized in that described driven unit comprises:
Rotate the lever that is installed on the described damper seat (26) by a fulcrum shaft, an end of described lever is hinged from the pull bar (2) that the relative end of above-mentioned hinged end stretches out with described hydraulic damper (20);
A connecting rod, one end and described lever are hinged away from an end of described pull bar (2), and the other end is hingedly mounted on door leaf or another of wall near door.
2. door closer according to claim 1 is characterized in that, described lever comprises a cross-shaped part (21) and a connecting rod (22); Described cross-shaped part (21) comprises an axis of rotation part (213) and is connected first connecting portion (211) and second connecting portion (212) at described axis of rotation part (213) middle part; Described first connecting portion (211) is fixedlyed connected with described connecting rod (22), and described second connecting portion (212) is hinged with described pull bar (2); The two ends of described axis of rotation part (213) are installed on the described damper seat (26) by bearing pin respectively, constitute described fulcrum shaft.
3. door closer according to claim 1 and 2 is characterized in that, described connecting rod comprises first connecting rod (231) and second connecting rod (232); Described first connecting rod (231) and described second connecting rod (232) one ends by an adjusting nut (24) adjustable length link together; The other end of described first connecting rod (231) is hinged with the spike (25) on one of wall that is installed on door leaf or close door; The other end of described second connecting rod (232) and described connecting rod (22) are hinged.
4. door closer according to claim 3 is characterized in that, described hydraulic damper (20) comprises
A cylinder body (12), described cylinder body (12) has at least one openend;
Cylinder body covers, and seals the openend of described cylinder body (12), to form sealed chamber in described cylinder body (12), forms through hole on the end face of one of them described cylinder body lid;
The through hole that a pull bar (2), one end pass on the end face of described cylinder body lid stretches in the described cylinder body (12);
A piston is installed in described pull bar (2) and stretches on the interior end of described cylinder body (12), and described sealed chamber is divided into two parts, and can be along described cylinder body (12) inner wall sealing ground back and forth movement; And
A biasing member is arranged between described piston and the described cylinder body (12), provides along the axial answer biasing force of described cylinder body (12) to described piston;
Described piston is provided with circulation one way valve (16) and current-limiting apparatus, hydraulic oil in the described sealed chamber of described circulation one way valve (16) restriction can only flow in the first of the described sealed chamber of described piston one side in the second portion of described sealed chamber of described piston opposite side, and described current-limiting apparatus limits the flow rate of hydraulic oil between two parts of described sealed chamber.
5. door closer according to claim 4 is characterized in that, exceed opening (151) or allow the direction of liquid flow and the opposite Check valve of current limiter (152) of direction of described circulation one way valve (16) permission liquid flow of described current-limiting apparatus.
6. door closer according to claim 4 is characterized in that, described biasing member is the back-moving spring (3) that is arranged between described piston and the described cylinder body lid.
7. the door closer of stating according to claim 4 is characterized in that, described piston comprises
Piston only (6), described piston only (6) have a cylinder side wall and are arranged on the next door of described cylinder side wall middle part radial arrangement, and described next door is provided with described circulation one way valve (16) and described current-limiting apparatus; And
Described circulation one way valve (16) comprises first valve opening of the part taper that is molded on the described next door, be arranged on the valve ball in described first valve opening, first piston lid (4) on end that is fixedly installed on described piston only (6) with through hole, and be arranged on spring between described first piston lid (4) and the described valve ball;
Be provided with a slit that is used for the hydraulic oil circulation between described first piston lid (4) and the described next door.
8. door closer according to claim 7 is characterized in that, described pull bar (2) is connected with described piston by being fixedly attached on the described first piston lid (4); Described through hole on the described first piston lid (4) is for being arranged on the hydraulic oil channel (18) that described pull bar (2) closes on an end of described first piston lid (4), and an end of described hydraulic oil channel (18) is communicated with corresponding described sealed chamber by the sidewall of described pull bar (2); The other end of described hydraulic oil channel (18) is communicated with the slit that is used for the hydraulic fluid circulation between described first piston lid (4) and the described next door.
9. door closer according to claim 7, it is characterized in that, described current-limiting apparatus comprises second valve opening of the part taper that is molded on the described next door, the tapered direction of described second valve opening is opposite with the tapered direction of described first valve opening, be arranged on the valve ball in described second valve opening, second piston cap (7) on other end that is fixedly installed on described piston only (6) with through hole, and be arranged on spring between described second piston cap (7) and the described valve ball;
Be provided with a slit that is used for the hydraulic fluid circulation between described second piston cap (7) and the described next door.
10. door closer according to claim 9 is characterized in that, described pull bar (2) is connected with described piston by being fixedly attached on described first piston lid (4) or described second piston cap (7); Described through hole on described first piston lid (4) or described second piston cap (7) is for being arranged on the hydraulic oil channel (18) that described pull bar (2) closes on an end of described piston, and an end of described hydraulic oil channel (18) is communicated with corresponding described sealed chamber by the sidewall of described pull bar (2); The other end of described hydraulic oil channel (18) is communicated with the slit that is used for the hydraulic oil circulation between described first piston lid (4) or described second piston cap (7) and the described next door.
11. door closer according to claim 4 is characterized in that, described cylinder body lid comprises seal cover (10,14) and fixed cap (8,13); Be provided with sealing ring (5) between the inner surface of described seal cover (10,14) external surface and described cylinder body (12) end corresponding position; The external surface of described fixed cap (8,13) inner surface and described cylinder body (12) end corresponding position is provided with screw thread, so that described fixed cap (8,13) fixes with the corresponding end thread of described cylinder body (12), and described seal cover (10,14) is pressed in the corresponding end of described cylinder body (12).
12. door closer according to claim 11, it is characterized in that, in forming the described cylinder body lid of through hole, also comprise pull bar sealed screw cover (9) and pull bar sealing ring (11), described seal cover (10,14) through hole has radially inwardly outstanding boss near an end parts of described sealed chamber, and be provided with the internal thread that matches with the external screw thread of described pull bar sealed screw cover (9) away from the inwall of an end parts of described sealed chamber, described pull bar sealing ring (11) is positioned at described pull bar sealed screw cover (9) and described seal cover (10,14) between, along with described pull bar sealed screw cover (9) towards described seal cover (10,14) tighten, described pull bar sealing ring (11) forms described pull bar (2) and described pull bar sealed screw cover (9) and seal cover (10,14) sealing between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201811827U CN201326332Y (en) | 2008-12-15 | 2008-12-15 | Door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201811827U CN201326332Y (en) | 2008-12-15 | 2008-12-15 | Door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326332Y true CN201326332Y (en) | 2009-10-14 |
Family
ID=41178305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201811827U Expired - Fee Related CN201326332Y (en) | 2008-12-15 | 2008-12-15 | Door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326332Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116125A (en) * | 2011-01-18 | 2011-07-06 | 深圳职业技术学院 | Folding normally-open fireproof door |
| CN102667041A (en) * | 2009-10-30 | 2012-09-12 | 雅特门控有限公司 | Door closer |
| CN103669558A (en) * | 2013-12-13 | 2014-03-26 | 长沙中联重科环卫机械有限公司 | Blow-down device and feces-sucking trolley |
| CN104691933A (en) * | 2015-03-22 | 2015-06-10 | 肖腾 | Self-locking device |
| CN105041091A (en) * | 2015-06-05 | 2015-11-11 | 伍志勇 | Adjustable furniture damping operation structure |
| CN105620769A (en) * | 2014-10-28 | 2016-06-01 | 中国航空工业集团公司西安飞机设计研究所 | Ventilation door drive mechanism for airplane lubricating oil cooling system |
-
2008
- 2008-12-15 CN CNU2008201811827U patent/CN201326332Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667041A (en) * | 2009-10-30 | 2012-09-12 | 雅特门控有限公司 | Door closer |
| CN102116125A (en) * | 2011-01-18 | 2011-07-06 | 深圳职业技术学院 | Folding normally-open fireproof door |
| CN102116125B (en) * | 2011-01-18 | 2012-11-14 | 深圳职业技术学院 | Folding normally-open fireproof door |
| CN103669558A (en) * | 2013-12-13 | 2014-03-26 | 长沙中联重科环卫机械有限公司 | Blow-down device and feces-sucking trolley |
| CN105620769A (en) * | 2014-10-28 | 2016-06-01 | 中国航空工业集团公司西安飞机设计研究所 | Ventilation door drive mechanism for airplane lubricating oil cooling system |
| CN104691933A (en) * | 2015-03-22 | 2015-06-10 | 肖腾 | Self-locking device |
| CN104691933B (en) * | 2015-03-22 | 2016-11-23 | 肖腾 | A kind of self-locking device |
| CN105041091A (en) * | 2015-06-05 | 2015-11-11 | 伍志勇 | Adjustable furniture damping operation structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20111215 |