CN203755873U - Oil-free automatic door closer - Google Patents
Oil-free automatic door closer Download PDFInfo
- Publication number
- CN203755873U CN203755873U CN201420040217.0U CN201420040217U CN203755873U CN 203755873 U CN203755873 U CN 203755873U CN 201420040217 U CN201420040217 U CN 201420040217U CN 203755873 U CN203755873 U CN 203755873U
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- Prior art keywords
- door
- cam
- push rod
- baffle plate
- door leaf
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- Withdrawn - After Issue
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Abstract
The utility model discloses an oil-free automatic door closer for automatically closing a door leaf. The oil-free automatic door closer comprises a housing, a rotating mechanism, a guide slide seat and a door closing driving power control mechanism, wherein the rotating mechanism comprises a shaft lever and a cam; the door closing driving power control mechanism comprises a rod body combination, a brake spring and a door closing speed spring. With the adoption of the oil-free automatic door closer, the door leaf can be opened in a special angle such as 90 degrees and maintained in an opening state under such angle; the door closing speed spring can provide a driving power for automatically closing the door leaf; the brake spring is able to suffer and slow down the door leaf during closing after the opening angle of the door leaf is less than the specific angle, such as 30 degrees.
Description
Technical field
The utility model relates to a kind of door closer, refer to especially a kind of non-oil hydraulic type without oily door check.
Background technology
Oil hydraulic type door closer is current common door check, as TaiWan, China notification number M466959 patent, disclose a kind of oil hydraulic door closer structure, this kind of oil hydraulic door closer structure comprises a pedestal, a piston, a rotating shaft unit, an elastic component and a control valve.This base interior has a chamber; This piston system is mounted on chamber stage casing, chamber is separated into the first chamber and the second chamber that can fill fluid.In addition, this pedestal one side is also provided with the return flow line of this first chamber of a connection and the second chamber.On the other hand, this internal piston is provided with the through hole of a tool return-stopping function, and this through hole can be communicated with the first chamber and second chamber of pedestal.This rotating shaft unit is mounted in the first chamber, and gives prominence to one section of end face in this pedestal to connect a door leaf, and the thrust that can be opened the door produces rotation.And this elastic component is in order to butted piston, this control valve system is mounted on pedestal, in order to adjust the actual internal area of return flow line.Accordingly, this kind of door closer can be by oil pressure regulation mechanism, and controls the switch of door leaf.But the door check of this kind of oil hydraulic type, it need to pour into fluid in inside, belongs to the more unfriendly design of environmental protection.In addition, because fluid need to be poured in its inside, need pay special attention to oil-leakage-prevention design in mechanism design aspect, therefore in structure and assembling, be unfavorable for manufacturing.
Utility model content
Therefore, the purpose of this utility model is to provide one not need to adopt oil pressure mode, can drive door leaf automatically to close, and simple in structure, easy to assembly, produces easier.
For achieving the above object, the utility model discloses a kind of without oily door check, for a door leaf automatically close running, it is characterized in that this comprises without oily door check:
One housing, is installed in a fixture;
One rotating mechanism, comprises an axostylus axostyle and a cam, and this axostylus axostyle is installed in this housing and can is rotated and be driven this door leaf to close by it; This cam is linked to this axostylus axostyle and rotates taking this axostylus axostyle as axle center, and the outer rim of this cam has at least one the shortest footpath place and at least one the longest wheel footpath place of taking turns, and in forming a short footpath depressed part of taking turns to should the shortlyest taking turns footpath place indent;
One guiding slide, be installed in this housing and position to should cam; And
The one drive controlling organization of closing the door, is installed in this housing, and comprises:
One body of rod combination, has a push rod, a baffle plate and an end plate, and this push rod moves along its axis and is arranged in this guiding slide, and one end of this push rod is resisted against the outer rim of this cam; This baffle plate is arranged at the other end of this push rod, itself and this guiding slide space, and there is brake spring stop face and the door closing speed spring stop face back to this guiding slide in the face of this guiding slide; This end plate is arranged in this housing, and its setting position is to should baffle plate, and with this baffle interval one distance;
One brake spring, has a sessile end and a free end, and this brake spring housing is located on this push rod, and between this guiding slide and this baffle plate, and sessile end is linked to this guiding slide; And
One door closing speed spring, is arranged between this baffle plate and this end plate, and two ends are linked to respectively door closing speed spring stop face and this end plate of this baffle plate,
Wherein, when this door leaf cuts out, this cam outer rim the shortest takes turns footpath place and this push rod joins; When this door leaf is opened, this door closing speed spring perseverance provides elastic force in this end plate so that this push rod is tending towards along it axially toward this cam application of force and make this cam rotate and be tending towards the shortlyest taking turns footpath place and this push rod joins with it; This door leaf is opened and this cam short taken turns footpath depressed part and this push rod while joining, and the free end of this brake spring is resisted against the brake spring stop face of this baffle plate and offsets the part elastic force that this door closing speed spring is bestowed.
Wherein, this cam is symmetrical cam, and cross section ovalize, outside it, there is respectively the shortest footpath place of taking turns because of the oval-shaped minor axis of correspondence place, and place has respectively a longest wheel footpath place in the oval-shaped major axis of correspondence, and in to should the longest wheel footpath place respectively indent form a long footpath depressed part of taking turns that joins with this push rod and make this cam be tending towards not rotating in the time that this door leaf is opened into a special angle.
Wherein, this end plate is arranged in this housing for adjusting position, and spacing distance between this end plate and this baffle plate makes this door closing speed spring that corresponding elastic force is provided.
Wherein, the combination of this body of rod also has a support spring pipe, this support spring pipe be linked to this baffle plate and between this baffle plate and this end plate and this door closing speed spring of confession sheathed on it.
Wherein, the combination of this body of rod also has a spiral lock of this end plate screw lock being adjusted to the spacing distance of this end plate and this baffle plate in this support spring Guan Bingneng.
Wherein, this guiding slide comprises a diapire and two interval walls on this diapire side by side, and these two walls move along its axis and wear wherein for this push rod; This push rod also has a block pin toward radial projection, this block pin between two walls of this guiding slide to limit this push rod in its axial displacement.
Pass through said structure, the outer margin contour design that sees through cam without oily door check of the present utility model, and the relevant cooperation of body of rod combination, brake spring, door closing speed spring, the effect that allows buffer deceleration can provide automatically closing, closing of door leaf without oily door check time and locate in ad-hoc location; And the utility model volume is little, cost is low, without oil and environmental protection, safe, failure rate is low in use, and be easy to install, therefore really can reach this novel object.
Other feature and effect of the present utility model will clearly present in the preferred embodiment with reference to graphic describes in detail.
Brief description of the drawings
Fig. 1: be a schematic perspective view, the application aspect of the utility model without oily door check is described;
Fig. 2: be a stereogram, the surface structure of the utility model without oily door check is described;
Fig. 3: be the three-dimensional decomposed figure of the utility model without oily door check;
Fig. 4: be the stereogram of the utility model without the core texture of oily door check;
Fig. 5: the three-dimensional exploded view that is Fig. 4;
Fig. 6: be along the sectional view of the VI-VI direction of Fig. 2, illustrate when door leaf cuts out, without the internal implementation aspect of oily door check;
Fig. 7: be one to be similar to the sectional view of Fig. 6, illustrate that door leaf is opened into 30 while spending, without the internal implementation aspect of oily door check; And
Fig. 8: be one to be similar to the sectional view of Fig. 6, Fig. 7, illustrate that door leaf is opened into 90 while spending, without the internal implementation aspect of oily door check.
Detailed description of the invention
Consult Fig. 1 to Fig. 6, for the utility model is without the preferred embodiment of oily door check 1.In Fig. 1, be to close with the aspect control door leaf 12 of door bow formula door closer without oily door check 1, therefore it can coordinate a connect mechanism 11, automatically closes running for door leaf 12.Wherein, these connect mechanism 11 two ends are linked to without oily door check 1 and door leaf 12, can coordinate the unlatching of door leaf 12 and corresponding rotation.But the utility model also can twist as ground the door closer use of refining formula without oily door check 1, under this use state, link without oily door check 1 door-hinge direct and door leaf 12, automatically closes to control door leaf 12.In the following description content, first explanation is without the inner member composition of oily door check 1 and the operational function of each element, and then explanation is without the overall operation mode of oily door check 1.
Specifically, with regard to main member, the utility model comprises a housing 2, a rotating mechanism 3, a guiding the slide 4 and drive controlling organization 5 of closing the door without oily door check 1.
Housing 2 is installed in a fixture (it is installed on door leaf 12) herein, and comprises a drain pan 21, an enclosing cover 22, a pedestal 23 and a upper cover 24.Pedestal 23 is main accommodates wherein for rotating mechanism 3, guiding slide 4 and the drive controlling organization 5 of closing the door, and seals its opening by upper cover 24.21 of drain pans can be accommodated pedestal 23, upper cover 24 and other members wherein, and are sealed by enclosing cover 22.Be noted that the above-mentioned explanation of the structure to housing 2 is only for the utility model is without a kind of embodiment of oily door check, user can adjust the structure of housing 2 according to need, and is not limited with the content disclosing herein.
Rotating mechanism 3 is arranged in housing 2, and it mainly comprises an axostylus axostyle 31, lower bearing 32, a cam 33, a upper bearing (metal) 34, an O type ring 35, a cover plate 36 and a spacer 37.
In the enforcement aspect as door bow formula door closer without oily door check, the axostylus axostyle 31 of rotating mechanism 3 coordinates and installs on it for above-mentioned member, it is arranged in housing 2 and protrudes from outside housing 2, and is connected with connect mechanism 11, can coordinate with connect mechanism 11 and transmission mutually.For example, in the time that user's application of force is opened or closed door leaf 12, axostylus axostyle 31 can be driven by connect mechanism 11 and rotate; In the time that user does not force in door leaf 12, the axostylus axostyle 31 drive controlling organization 5 of can being closed the door drives and rotates, and sees through connect mechanism 11 drive of closing the door is conveyed to door leaf 12, and door leaf 12 cuts out gradually automatically.And without oily door check.In enforcement aspect as ground strand refining formula door closer, axostylus axostyle 31 is to be directly connected with the door-hinge of door leaf 12, and can be rotated and be driven door leaf 12 to close by it.
The cam 33 of rotating mechanism 3 is linked to axostylus axostyle 31 bottom surfaces and rotates taking axostylus axostyle 31 as axle center, in the present embodiment, it is symmetrical cam, the general ovalize of cross section, and outer have respectively the shortest footpath place 331 (as Fig. 6) of taking turns because of the oval-shaped minor axis of correspondence place, and have respectively a longest wheel footpath place 332 in the oval-shaped major axis of correspondence place.In addition, the cam 33 of the present embodiment outer because of correspondence the shortest take turns footpath place 331 also each indent form a short footpath depressed part 333 of taking turns, and in corresponding these the longest wheel footpath places 332 of its outer rim respectively indents form long wheel footpath depressed parts 334.Therefore, the cam 33 of the present embodiment short taken turns footpath depressed part 333 and is distributed in alternately in its outer rim with long wheel footpath depressed part 334, and two are shortly taken turns footpath depressed part 333 and two long footpath depressed parts 334 of taking turns are located at respectively symmetric position.
The lower bearing 32 of rotating mechanism 3 is ball bearing with upper bearing (metal) 34, both by cam 33 sandwicheds wherein, to help the smooth rotation of cam 33.O type ring 35, cover plate 36 are sequentially arranged on upper bearing (metal) 34, and it is the auxiliary part of rotating mechanism 3.And spacer 37 links with aforementioned components, and rotating mechanism 3 is fixed in housing 2.
Therefore,, according to above-mentioned member composition, the driving force of closing the door that rotating mechanism 3 can produce the drive controlling organization 5 of closing the door effectively, drives to the door-hinge of connect mechanism 11 or door leaf 12, and drives door leaf 12 automatically to close in the mode of rotating.
Guiding slide 4 be installed in housing 2 and position corresponding to rotating mechanism 3, diapire 41 and two interval walls 42 on diapire 41 side by side, the displacement structure guidance function can provide the drive controlling organization 5 of closing the door to operate time are provided for it.
The drive of closing the door controlling organization 5 is arranged in housing 2, and comprises a body of rod combination 6, brake spring 7 and a door closing speed spring 8.
Body of rod combination 6 comprises a push rod 61, a baffle plate 64, a support spring pipe 65, an end plate 66 and a spiral lock 67.
The push rod 61 of body of rod combination 6 can move along its axis in the wall 42 that is arranged in guiding slide 4, and its one end is resisted against the outer rim of cam 33 by auxiliary wheel 62, and is also provided with a block pin 63 toward radial projection in the position between two walls 42.When this auxiliary wheel 62 can allow push rod 61 with cam 33 start, reduce noise and damage that friction causes; This block pin 63 can limit push rod 61 in its axial displacement, to guarantee that push rod 61 is in forming and fit tightly with cam 33 for a long time after polyslip.
The baffle plate 64 of body of rod combination 6 is located at push rod 61 and is not arranged the other end of auxiliary wheel 62, itself and this guiding slide 4 spaces, and there is brake spring stop face 641 and the door closing speed spring stop face 642 back to this guiding slide 4 in the face of this guiding slide 4, in order to brake, spring 7 and door closing speed spring 8 apply elastic acting force in the application of force place of push rod 61.
The support spring pipe 65 of body of rod combination 6 is linked to the door closing speed spring stop face 642 of baffle plate 64, and between baffle plate 64 and end plate 66, can for door closing speed spring 8, sheathed it be upper, and while avoiding 8 start of door closing speed spring, torsional deformation or generation misplace.
The end plate 66 of body of rod combination 6 is arranged in this housing 2, the corresponding baffle plate 64 in its position and door closing speed spring 8, and with baffle plate 64 interval one specific ranges, can be by spiral lock 67 screw locks on support spring pipe 65, and can adjust by the screw lock degree of depth of spiral lock 67 spacing distance of itself and baffle plate 64, with the decrement of adjusting door closing speed spring 8, and control the elastic force of door closing speed spring 8 and the closing velocity of door leaf 12.
Brake spring 7 has a sessile end 71 and a free end 72, it is sheathed on push rod 61, and between guiding slide 4 and this baffle plate 64, and sessile end 71 is linked to the wall 42 of guiding slide 4, can for example, after closing to a particular range (30 spend in), door leaf 12 provide buffer deceleration mechanism.The free end 72 of brake spring 7 does not link with particular configuration, and it acts on subsequent paragraph explanation.
Door closing speed spring 8 is arranged between baffle plate 64 and end plate 66, and two ends are linked to respectively the door closing speed spring stop face 642 and end plate 66 of baffle plate 64, its perseverance provides elastic force in end plate 66, make push rod 61 perseverances along its axially past cam 33 application of forces, allow corresponding rotation after the outer rim pressurized of cam 33, and allowing cam 33 be tending towards joining and involution original position gradually with this push rod 61 with its shortest footpath place 331 of taking turns, it closes required driving force automatically therefore to open rear sustainable supply at door leaf 12.
In the explanation of aforementioned paragraphs, the associated components details without oily door check 1 of the present embodiment and effect can fully be learnt.Following paragraph, will coordinate correlative type, and the overall operation mode without oily door check 1 is described.
With reference to Fig. 6, this is for door leaf 12 is when closed condition (opening angle is 0 degree), without the inside configuration of oily door check 1.Under this state, the shortest footpath place 331 of taking turns of cam 33 outer rims can join with the auxiliary wheel 62 of push rod 61, though cam 33 is subject to the active force that push rod 61 applies, but still can keep the static state not rotating.The part of door closing speed spring 8, because the spacing distance between door closing speed spring stop face 642 and the end plate 66 of baffle plate 64 is now in ultimate range state, the decrement minimum of door closing speed spring 8, therefore door closing speed spring 8 acts on elastic force F1 (force direction is the direction towards cam 33) on baffle plate 64 and push rod 61 also for minimum.And the part of brake spring 7, because the spacing distance between the brake spring stop face 641 of baffle plate 64 now and the wall 42 of guiding slide 4 is in minimum range state, the free end 72 of brake spring 7 is resisted against the brake spring stop face 641 of baffle plate 64, and the decrement of brake spring 7 is maximum, the elastic force F2(force direction that the spring 7 that makes to brake acts on baffle plate 64 and push rod 61 is the direction away from cam 33) be maximum rating, and offset the part elastic force F1 that door closing speed spring 8 is bestowed.Therefore, at door leaf 12 during in closed condition, the proof resilience power (F2-F1) that door closing speed spring 8 and brake spring 7 put on push rod 61 is in minimum state.
Consult Fig. 7, when this is opened into a special angle (the present embodiment is set as 30 degree) for door leaf 12, without the inside configuration of oily door check 1.Under this state, the critical point of brake spring 7 in its elastic force F2 growth and decline.Specifically, now cam 33 short taken turns the border of footpath depressed part 333 and the auxiliary wheel 62 of push rod 61 joins, cam 33 is in rotatable state, and the decrement of brake spring 7 is zero just, therefore do not produce at this critical point brake spring 7 the elastic force F2 that any restriction axostylus axostyle 31 moves.In the time of this critical point, if user does not apply external force in door leaf 12, the elastic force (F1) of door closing speed spring 8 can be ordered about push rod 61 and be compressed to cam 33, makes cam 33 return to gradually the state (as Fig. 6) that its shortest auxiliary wheel 62 of taking turns footpath place 331 and push rod 61 joins.In this process, the interlock of axostylus axostyle 31 is followed in the rotation of cam 33, can drive door leaf 12 to close gradually.And when door leaf 12 cuts out gradually, push rod 61 is understood the direction slippage to cam 33 gradually, make the door closing speed spring stop face 642 of baffle plate 64 gradually near the wall 42 of guiding slide 4, so decrement and the elastic force F2 of brake spring 7 can increase gradually, and progressively strengthen its payment effect of elastic force F2 to brake spring 7, the speed that door leaf 12 cuts out is slack-off gradually, and the buffering effect of further closing the door is provided.Therefore, returned to by specific opening angle (being 30 degree) herein at door leaf 12 in the process of buttoned-up status (0 degree), the elastic force F2 that brake spring 7 produces can increase gradually, the elastic force F1 that door closing speed spring 8 produces can reduce gradually, this mechanism that disappears (F1) those long (F2) can allow both proof resilience power (F1-F2) weaken rapidly, the pressure that drives that makes axostylus axostyle 31 act on cam 33 tends to become weak, thereby allow the rotation of cam 33 ease up, make the closing velocity of door leaf 12 gradually slow, reach the object of buffering.
And on the other hand, when the critical point of door leaf 12 in above-mentioned unlatching (30 degree), if the opening angle of door leaf 12 is further increased, can make axostylus axostyle 31 toward the direction slippage away from cam 33, the free end 72 of spring 7 of now braking no longer contacts with the brake spring stop face 641 of baffle plate 64, therefore the decrement of spring 7 of braking can continue to remain zero compression, and its directed force F 2 also remains zero active force, the opening angle that represents door leaf 12 is greater than after this critical angle (30 degree), and brake spring 7 no longer has the buffering effect that allows the closing velocity of door leaf 12 slow down.
Consult Fig. 8, when this is turned on to a specific orientation angle (being 90 degree) herein for door leaf 12, without the inside configuration of oily door check 1.Now, the longest wheel footpath place 332 of cam 33 outer rims joins with the auxiliary wheel 62 of push rod 61, and the auxiliary wheel 62 of push rod 61 is embedded in the long wheel footpath depressed part 334 of cam 33 just, so though cam 33 is subject to the active force that push rod 61 applies, if impose external force but be not subject to user, it can keep the static state not rotating, and makes permanent its opening angle that keeps of door leaf 12.Under this state, because the spacing distance between door closing speed spring stop face 642 and the end plate 66 of baffle plate 64 is in minimum range state, the decrement maximum of door closing speed spring 8, therefore door closing speed spring 8 acts on elastic force F1 on baffle plate 64 and push rod 61 in maximum rating.And the part of brake spring 7, because its free end 72 does not still contact with the brake spring stop face 641 of baffle plate 64, so its elastic force F2 is zero.Under this state, if user forces in door leaf 12, allow the auxiliary wheel 62 of push rod 61 depart from the long wheel footpath depressed part 334 of cam 33, the elastic force F1 providing due to door closing speed spring 8 is the event of maximum rating, and initial door closing speed when door leaf 12 starts automatic door-closing by 90 degree also can be the fastest.And the opening angle of working as door leaf 12 is gradually little, the elastic force F1 that door closing speed spring 8 provides also can progressively reduce, and the door closing speed of door leaf 12 is slowed down.
Therefore, the description of comprehensive above-mentioned Fig. 6 to Fig. 8 is known, according to the different opening angles of door leaf 12, can correspondence automatic door-closing be provided, close the door and cushion or locating effect without oily door check 1.In the time that unlatching 90 is spent, can make door leaf 12 maintain the states of opening 90 degree without oily door check 1.When the opening angle of door leaf 12 is between 30 degree to 90 degree, door closing speed spring 8 can provide door leaf 12 to close required elastic force F1, and this elastic force F1 progressively successively decreases with the minimizing of door leaf 12 opening angles, makes the closing velocity of door leaf 12 slack-off gradually.When the opening angle of door leaf 12 is between 0 degree to 30 degree, door closing speed spring 8 provides door leaf 12 to close required elastic force F1 can progressively to successively decrease with the minimizing of door leaf 12 opening angles, and the spring 7 of braking under this state can further provide the reverse elasticity power F2 in contrast to elastic force F1, this reverse elasticity power F2 can progressively increase progressively with the minimizing of door leaf 12 opening angles, the closing velocity of door leaf 12 is more eased up slowly, and buffering effect is provided.
And on the other hand, the utility model without oily door check 1 in, according to the symmetric shape design of cam 33, can allow the angle that door leaf 12 is opened further reach between 90 degree to 180 degree, or be oppositely opened into-180 degree, allow and can provide automatic door-closing, the buffering effect of locating and close the door automatically without oily door check 1 in each opening angle.In addition, in the application mode as ground strand refining, can directly a side bottom of this door leaf 12 be connected and produce interlock with these axostylus axostyle 31 fits, and not need to use connect mechanism 11.In addition, the utility model is little without oily door check 1 volume, cost is low, without oil and environmental protection, safe, failure rate is low in use, and be easy to install, therefore really can reach this novel object.
But, what specify is, it is above-mentioned that about door leaf 12, at specific opening angle, (for example 30 spend, 90 degree) operating mechanism change visual actual needs and adjust, for example user can be by the shape design of cam, the adjustment of brake spring 7 and door closing speed spring 8 decrements, and the critical angle (for example can change 45 degree into from 30 degree) that change operating mechanism changes, therefore foregoing is only for illustrating the embodiment of the present embodiment, should not limit practical range of the present utility model with this, generally the simple equivalence of doing according to this novel claim and patent specification content changes and modifies, all still belong in the scope that this new patent contains.
Claims (6)
1. without an oily door check, for a door leaf automatically close running, it is characterized in that this comprises without oily door check:
One housing, is installed in a fixture;
One rotating mechanism, comprises an axostylus axostyle and a cam, and this axostylus axostyle is installed in this housing and can is rotated and be driven this door leaf to close by it; This cam is linked to this axostylus axostyle and rotates taking this axostylus axostyle as axle center, and the outer rim of this cam has at least one the shortest footpath place and at least one the longest wheel footpath place of taking turns, and in forming a short footpath depressed part of taking turns to should the shortlyest taking turns footpath place indent;
One guiding slide, be installed in this housing and position to should cam; And
The one drive controlling organization of closing the door, is installed in this housing, and comprises:
One body of rod combination, has a push rod, a baffle plate and an end plate, and this push rod moves along its axis and is arranged in this guiding slide, and one end of this push rod is resisted against the outer rim of this cam; This baffle plate is arranged at the other end of this push rod, itself and this guiding slide space, and there is brake spring stop face and the door closing speed spring stop face back to this guiding slide in the face of this guiding slide; This end plate is arranged in this housing, and its setting position is to should baffle plate, and with this baffle interval one distance;
One brake spring, has a sessile end and a free end, and this brake spring housing is located on this push rod, and between this guiding slide and this baffle plate, and sessile end is linked to this guiding slide; And
One door closing speed spring, is arranged between this baffle plate and this end plate, and two ends are linked to respectively door closing speed spring stop face and this end plate of this baffle plate,
Wherein, when this door leaf cuts out, this cam outer rim the shortest takes turns footpath place and this push rod joins; When this door leaf is opened, this door closing speed spring perseverance provides elastic force in this end plate so that this push rod is tending towards along it axially toward this cam application of force and make this cam rotate and be tending towards the shortlyest taking turns footpath place and this push rod joins with it; This door leaf is opened and this cam short taken turns footpath depressed part and this push rod while joining, and the free end of this brake spring is resisted against the brake spring stop face of this baffle plate and offsets the part elastic force that this door closing speed spring is bestowed.
2. as claimed in claim 1 without oily door check, it is characterized in that, this cam is symmetrical cam, and cross section ovalize, outside it, there is respectively the shortest footpath place of taking turns because of the oval-shaped minor axis of correspondence place, and place has respectively a longest wheel footpath place in the oval-shaped major axis of correspondence, and in to should the longest wheel footpath place respectively indent form a long footpath depressed part of taking turns that joins with this push rod and make this cam be tending towards not rotating in the time that this door leaf is opened into a special angle.
3. as claimed in claim 1ly it is characterized in that without oily door check, this end plate is arranged in this housing for adjusting position, and spacing distance between this end plate and this baffle plate makes this door closing speed spring that corresponding elastic force is provided.
4. as claimed in claim 1ly it is characterized in that without oily door check, this body of rod combination also has a support spring pipe, this support spring pipe be linked to this baffle plate and between this baffle plate and this end plate and this door closing speed spring of confession sheathed on it.
5. as claimed in claim 4ly it is characterized in that without oily door check, this body of rod combination also has a spiral lock of this end plate screw lock being adjusted to the spacing distance of this end plate and this baffle plate in this support spring Guan Bingneng.
6. as claimed in claim 1ly it is characterized in that without oily door check, this guiding slide comprises a diapire and two interval walls on this diapire side by side, and these two walls move along its axis and wear wherein for these push rods; This push rod also has a block pin toward radial projection, this block pin between two walls of this guiding slide to limit this push rod in its axial displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040217.0U CN203755873U (en) | 2014-01-22 | 2014-01-22 | Oil-free automatic door closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040217.0U CN203755873U (en) | 2014-01-22 | 2014-01-22 | Oil-free automatic door closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203755873U true CN203755873U (en) | 2014-08-06 |
Family
ID=51251161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040217.0U Withdrawn - After Issue CN203755873U (en) | 2014-01-22 | 2014-01-22 | Oil-free automatic door closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203755873U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790793A (en) * | 2014-01-22 | 2015-07-22 | 黄申富 | Oil-free automatic door closing device |
| CN107100474A (en) * | 2017-05-27 | 2017-08-29 | 佛山市南海区松岗浩能五金塑料有限公司 | It is a kind of to allow the closer that door is independently closed |
| CN108097693A (en) * | 2017-12-30 | 2018-06-01 | 浙江前进暖通科技股份有限公司 | A kind of induced-draft fan of casting |
| CN108097693B (en) * | 2017-12-30 | 2024-04-19 | 浙江前进暖通科技股份有限公司 | Smoke extractor of foundry goods |
-
2014
- 2014-01-22 CN CN201420040217.0U patent/CN203755873U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790793A (en) * | 2014-01-22 | 2015-07-22 | 黄申富 | Oil-free automatic door closing device |
| CN107100474A (en) * | 2017-05-27 | 2017-08-29 | 佛山市南海区松岗浩能五金塑料有限公司 | It is a kind of to allow the closer that door is independently closed |
| CN107100474B (en) * | 2017-05-27 | 2018-08-07 | 佛山市南海区松岗浩能五金塑料有限公司 | A kind of closer for allowing door independently to close |
| CN108097693A (en) * | 2017-12-30 | 2018-06-01 | 浙江前进暖通科技股份有限公司 | A kind of induced-draft fan of casting |
| CN108097693B (en) * | 2017-12-30 | 2024-04-19 | 浙江前进暖通科技股份有限公司 | Smoke extractor of foundry goods |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140806 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |