CN201835661U - 90 DEG door booster - Google Patents
90 DEG door booster Download PDFInfo
- Publication number
- CN201835661U CN201835661U CN2009202860172U CN200920286017U CN201835661U CN 201835661 U CN201835661 U CN 201835661U CN 2009202860172 U CN2009202860172 U CN 2009202860172U CN 200920286017 U CN200920286017 U CN 200920286017U CN 201835661 U CN201835661 U CN 201835661U
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- CN
- China
- Prior art keywords
- door
- booster
- circuit
- main shaft
- potentiometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a 90 DEG door booster, in particular to a 90 DEG door booster which can reduce door opening resistance and can automatically close a door. The 90 DEG door booster comprises a door leaf and a booster casing, wherein the door leaf is connected with a main shaft through a link mechanism, a screw is arranged at the upper part of the main shaft and is in threaded fit with a slipper nut mounted in the booster casing through a rolling screw-driven pair, the sliding nut is supported by a compression spring arranged between the upper end surface of the sliding nut and the top surface of the booster casing, a proportion electromagnet fixedly mounted on the inner wall of the booster casing is connected with the lower end surface of the sliding nut, a driving bevel gear is mounted on the main shaft and engaged with a driven bevel gear, and the driven bevel gear is connected with a potentiometer rotating shaft on a circuit board; and the circuit board is fixed on the inner wall of the of the booster casing and connected with a potentiometer and the proportion electromagnet, and the circuit of the circuit board is a control circuit. The control circuit drives the proportion electromagnet to provide power, so that during door opening, the spring force is overcome and people can push/pull open the door with small constant force; and during door closing, the door booster serves as a cushioning device to avoid instant energy release of the spring, so that the door closing is gentle and stable. The 90 DEG door booster can not only realize all functions of the existing automatic door closer, but also can reduce door opening resistance; and has the advantages of simple structure, low sealing requirement and low cost, and is convenient for installation, so that door booster has good application prospects.
Description
Technical field
The utility model relates to a kind of 90 degree door boosters, and has the function of closing the door automatically.Its outstanding feature is the guarantor to open the door with less constant pushing away/pulling force, and can close the door stably.
Background technology
Existing closing device for building is to adopt when opening the door by spring or piston cylinder storage power, and is achieved in the method that releases energy at closing time and closes the door automatically.The closing device of spring needs against the force of the spring when opening the door, and because spring performance, along with the angle of opening the door becomes big, it is big that the needed resistance that overcomes of user also becomes thereupon, opens the door for old man children and Ms and make troubles.And oil hydraulic type closing device complex structure, strength is bigger at closing time, has to be clamped the risk of causing injury.And along with the increase of service time, can cause the supporting capacity and the friction, lubrication worsening condition of mechanical mechanism in the above device, and then resistance becomes problem such as big when causing opening the door.
Summary of the invention
The utility model purpose is to overcome above-mentioned shortcoming, and a kind of 90 simple and reliable degree door boosters are provided, and resistance is along with the variation of open angle is constant in the time of can realizing opening the door; Automatically at closing time steadily, function slowly.
For achieving the above object, design of the present utility model is:
90 degree door boosters of the present utility model comprise: the open angle detector; Output current and open angle are linear and have the control circuit of time-lag action at closing time; Utilize the proportion electro-magnet of electric installation output current work; Be used to transmit the rolling screw transmission of power of opening the door; And be used to store the spring of power of closing the door.
It is characterized in that: when opening the door, the open angle detector produces the input voltage signal that is directly proportional with open angle, produce the PWM waveform electric current that dutycycle is directly proportional with input voltage by control circuit, this electric current process power amplification control ratio electromagnet afterwards produces force signal, and compresses spring by the rolling screw transmission.By accompanying drawing 4 frame for movements, spring resistance is directly proportional with open angle when opening the door, and have the proportion electro-magnet of circuit control also to be directly proportional with open angle, and suitably regulate maximum current by potentiometer, open the door with less constant pushing away/pulling force with the guarantor thereby resistance is constant can realize opening the door the time.
When the user opens the door action when stopping, this moment, door began to close because the elastic force of spring is a bit larger tham the proportion electro-magnet power output, and the ramp circuit in this moment control circuit plays retarding action to the decline of input voltage, thereby realizes closing the door steadily, slowly.According to above-mentioned utility model design, the utility model adopts following technical proposals:
A kind of 90 degree door boosters comprise door leaf and booster housing, and it is characterized in that: described door leaf connects a main shaft by linkage; The top of described main shaft is screw rod, and is installed in a slider nut in the booster housing and revolves with the rolling screw transmission and join; Support by a stage clip between described slider nut upper surface and the booster housing end face; Described slider nut lower surface is connected and fixed a proportion electro-magnet that is installed in the booster inner walls; A drive bevel gear is housed, with a driven wheel of differential engagement on the described main shaft; Described driven wheel of differential is connected with a potentiometer rotating shaft on the circuit board; Described circuit board is fixed on the described booster inner walls, and the circuit on the described circuit board is a control circuit, and this control circuit connects described potentiometer and proportion electro-magnet.
The structure of aforementioned link mechanism is: a first connecting rod is connected with door leaf middle part hinge, and the other end is connected with a second connecting rod hinge, and the other end of second connecting rod is connected with described main shaft.
A drive bevel gear is installed on the above-mentioned main shaft becomes 90 ° to intersect with driven wheel of differential.
The structure of above-mentioned rolling screw transmission is: the internal thread of described slider nut revolves mutually with ball joins, and ball revolves mutually with the external screw thread of main shaft joins.
Above-mentioned control circuit is: a ramp circuit input is connected with described potentiometer, output is connected with the input that circuit takes place a PWM, the output that circuit takes place described PWM is connected with the input of a power amplification circuit, and the output of described power amplification circuit is connected with described proportion electro-magnet.
The utility model compared with prior art has following conspicuous substantive distinguishing features and advantage:
1, this booster have the function of closing the door automatically and when opening the door resistance very little, be fit to be applied in the place that old man, child and physical disabilities have demand
2, control circuit is contained in the housing, and is easy for installation.
3, the relative motor noise of proportion electro-magnet is little, operate steadily, and at closing time slowly steadily, so be particularly suitable for being applied in quietly place such as library, concert hall.
4, ball screw assembly, is as transmission mechanism, and not only transmission direction is reversible, and transmission efficiency is very high, and the device operation is more smooth.
5, other door engine structure nearly all is to adopt hydraulic oil or mechanical damper to make snubber, therefore require good seal performance, manufacturing cost height, the utility model adopt the closed-loop control proportion electro-magnet to make snubber when backhaul, so simple in structure, cost is lower.
6, be with a wide range of applications.
The accompanying drawing content:
Fig. 1 is an organigram of the present utility model;
Fig. 2 is a control circuit schematic diagram of the present utility model
Fig. 3 is a control circuit block diagram of the present utility model;
Fig. 4 is the utility model mechanical mechanism figure.
The specific embodiment:
Preferred embodiment accompanying drawings of the present utility model is as follows:
Embodiment one: referring to Fig. 1 and Fig. 3, this 90 degree door booster comprises door leaf 19 and booster housing 1, and characteristics are: 1. door leaf 19 connects main shaft 3 by linkage.2. the top of main shaft 3 is screw rod, and is installed in slider nut 4 in the booster housing 1 and revolves with rolling screw transmission parafacies and join.3. support by spring 2 between slider nut 4 upper surfaces and booster housing 1 end face.4. the slider nut lower surface fixedly mounts proportion electro-magnet 6.5. on the main shaft 3 drive bevel gear 17 is housed, with driven wheel of differential 7 engagement, driven wheel of differential 7 is connected with potentiometer 8 turning cylinders on the circuit board 9.6. circuit board 9 is fixed on booster housing 1 inwall, and the circuit on the circuit board 9 is a control circuit, is connected with proportion electro-magnet 6 with potentiometer 8.
Embodiment two: referring to Fig. 1, Fig. 3 and Fig. 4, present embodiment is identical with embodiment one, special feature is: the structure of linkage is: a first connecting rod 18 is connected with door leaf 19 middle part hinges, the other end is connected with second connecting rod 14 hinges, and the other end of second connecting rod 14 is connected with main shaft 3.The drive bevel gear 17 of installing on the main shaft 3 intersects for 7 one-tenth 90 ° with driven wheel of differential.The structure of rolling screw transmission is: the internal thread of slider nut 4 revolves mutually with ball 5 joins, and ball 5 revolves mutually with the external screw thread of main shaft 3 joins.Control circuit is: ramp circuit 20 inputs are connected with potentiometer 8, output is connected with the input that circuit 21 takes place PWM, the output that circuit 21 takes place PWM is connected with the input of power amplification circuit 22, and the output of power amplification circuit 22 is connected with proportion electro-magnet 6.Fig. 4 has provided the frame for movement of this booster, and there is bottom end cover 13 booster housing 1 lower end, and the centre bore of bottom end cover 13 is installed bearing insert 10 by bearing holder (housing, cover) 11, by bearing insert 10 supporting spindles 3.The bottom of main shaft 3 is by plane bearing 12, nut 16 and packing ring 15 connection second connecting rods 14.Ball-screw main shaft 3 is supported by bearing holder (housing, cover) 11 and bearing insert 10, produce sliding friction with lining 10, and fixed in the axial direction by the flange and the hold-down nut 16 of bearing holder (housing, cover) 10, fixedly connected with the linkage on being contained in door in the lower end of main shaft 3, upper end and slider nut 4 cooperatings, because ball screw assembly, both can transfer rectilinear motion to and having rotatablely moved, and can transfer rectilinear motion with rotatablely moving to again, therefore be particularly suitable for being used in the bidirectional-movement occasion of opening the door, closing the door.Slider nut 4 is connected with spring 2 again.Be fixed on that proportion electro-magnet 6 also is connected with slider nut 4 on the base plate, regulate resistance with correction of movement at any time.The plastics bevel gear 7 that a pair of light weight volume is little passes to rotational potentiometer 8 with angle of eccentricity.Fig. 3 illustrates control circuit.
When opening the door, linkage on the door, drive main shaft 3 rotations, the anglec of rotation makes slider nut 4 move up and holddown spring 2, simultaneously, plastics bevel gear 7 drives potentiometer 8 rotations, and promptly the potentiometer Rw1 among Fig. 3 detects open angle θ signal, controlled signal Vi makes the Vi Vi=K that is directly proportional with open angle
1θ.Not influence when 20 pairs of input signals of ramp circuit rise, circuit 21 takes place by the PWM that is made up of two 555 timers and produces the PWM ripple that dutycycle is directly proportional with Vi in Vi.The PWM ripple amplifies driving proportion electro-magnet 6 via power tube, the power F=K of proportion electro-magnet 6 generations this moment
2Vi.Power F withstands slider nut 4, and then initiatively compression is used for storing the spring 2 of energy of closing the door, because so extra power moving slider nut 4 compression springs 2 have simultaneously been arranged, so the people who opens the door can feel that just the resistance that is subjected to is very little.When opening the door, the required resistance F that overcomes of compression spring
d=K
dX, K
dBe the modulus of elasticity of spring, X is the compressed stroke of spring.And X and open angle θ also are proportional relations, X=K
3θ.Hence one can see that, user's necessary forces F when opening the door
t=(F
d-F)/and n+f, η is a transmission efficiency, f is the frictional force of frame for movement.Comprehensively find the solution F
t=(K
dK
3-K
2K
1) θ/η+f.Potentiometer Rw2 and spring modulus K in the regulating circuit
dValue make K
dK
3=K
2K
1, can realize that constant force f opens the door, and only need overcome the very little frictional force of mechanical mechanism, can not cause old man, children and Ms etc. because strength is not held the situation of door inadequately.
At closing time, the unlatching energy that stores discharges again, and spring 2 is lax, with slider nut 4 to pressing down, drive 3 reverse rotations of ball-screw main shaft, the pulling connecting rod is closed the door, meanwhile, and along with diminishing of the angle of door, Vi also diminishes thereupon, this circuit plays the slope effect to Vi, Vi is slowly descended, thereby realize steady, shock-free closing the door.
This door engine circuit control section adopts the devices at full hardware circuit to realize, the situation such as do not have software delays or make mistakes. Have safety, reliable, cost is low, volume is little, the advantage such as easy for installation. Can regulate by the potentiometer of the adjusting control circuit 9 inside strength that can realize opening the door, lockup such as can regulate at the function.
Claims (5)
1. a degree door booster comprises door leaf (19) and booster housing (1), it is characterized in that:
A. described door leaf (19) connects a main shaft (3) by linkage;
The top of b. described main shaft (3) is screw rod, and an interior slider nut (4) revolves with the rolling screw transmission and joins with being installed in booster housing (1);
C. support by a stage clip (2) between described slider nut (4) upper surface and booster housing (1) end face;
D. described slider nut (4) lower surface connects a proportion electro-magnet (6) that is fixedly mounted on booster housing (1) inwall;
A drive bevel gear (17) is housed on the e. described main shaft (3), meshes with a driven wheel of differential (7); Described driven wheel of differential (7) is connected with a potentiometer (8) rotating shaft on the circuit board (9);
F. described circuit board (9) is fixed on described booster housing (1) inwall, and the circuit on the described circuit board (9) is a control circuit, and this control circuit connects described potentiometer (8) and proportion electro-magnet (6).
2. 90 degree door boosters according to claim 1, the structure that it is characterized in that described linkage is: a first connecting rod (18) is connected with door leaf (19) middle part hinge, the other end is connected with a second connecting rod (14) hinge, and the other end of second connecting rod (14) is connected with described main shaft (3).
3. 90 degree door boosters according to claim 1, it is characterized in that described main shaft (3) go up install a drive bevel gear (17) become with driven wheel of differential (7) 90 ° crossing.
4. according to the described 90 degree door boosters of claim 1, it is characterized in that the structure of described rolling screw transmission is: the internal thread of described slider nut (4) revolves mutually with ball (5) joins, and ball (5) revolves mutually with the external screw thread of main shaft (3) joins.
5. according to the described 90 degree door boosters of claim 1, it is characterized in that: described control circuit is: a ramp circuit (20) input is connected with described potentiometer (8), output is connected with the input that circuit (21) takes place a PWM, the output that circuit (21) takes place described PWM is connected with the input of a power amplification circuit (22), and the output of described power amplification circuit (22) is connected with described proportion electro-magnet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202860172U CN201835661U (en) | 2009-12-22 | 2009-12-22 | 90 DEG door booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202860172U CN201835661U (en) | 2009-12-22 | 2009-12-22 | 90 DEG door booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835661U true CN201835661U (en) | 2011-05-18 |
Family
ID=44005767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202860172U Expired - Fee Related CN201835661U (en) | 2009-12-22 | 2009-12-22 | 90 DEG door booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461483A (en) * | 2017-03-03 | 2019-11-15 | 宜家供应有限公司 | Furniture rotation system with reduced friction and the furniture including this system |
-
2009
- 2009-12-22 CN CN2009202860172U patent/CN201835661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461483A (en) * | 2017-03-03 | 2019-11-15 | 宜家供应有限公司 | Furniture rotation system with reduced friction and the furniture including this system |
| US11933358B2 (en) | 2017-03-03 | 2024-03-19 | Ikea Supply Ag | Furniture rotary system having reduced friction, and a piece of furniture comprising such system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110518 Termination date: 20121222 |