CN105008811B - Ventilation fan and shutter switching mechanism - Google Patents

Ventilation fan and shutter switching mechanism Download PDF

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Publication number
CN105008811B
CN105008811B CN201380073316.7A CN201380073316A CN105008811B CN 105008811 B CN105008811 B CN 105008811B CN 201380073316 A CN201380073316 A CN 201380073316A CN 105008811 B CN105008811 B CN 105008811B
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China
Prior art keywords
shutter
spring
arm
shutter arm
pair
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CN201380073316.7A
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CN105008811A (en
Inventor
安田雄
安田雄一
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/146—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with springs

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

Shutter switching mechanism (100) has：The framework (10) of rectangular shape；It is being arranged at shutter face (21a), (21b), a lateral margin (22a) of (21c), (22b), the shutter rotary shaft (41a) of position near (22c), (41b), louver board (20a), (20b), (20c) that framework (10) are rotatably arranged on (41c)；Be fixed on a lateral margin (22a), (22b), near (22c), and be respectively relative to louver board (20a), (20b), (20c) inclined shutter arm (40a), (40b), (40c)；By the interconnected web (30) of shutter arm (40a), (40b), (40c)；And, the spring (50) installed across shutter arm (40a) and shutter arm (40b).

Description

Ventilation fan and shutter switching mechanism
Technical field
The present invention relates to ventilation fan and shutter switching mechanism, more particularly to possess hinge gate-type shutter ventilation fan and The shutter switching mechanism of hinge gate-type shutter.
Background technology
In the past, wall, which was installed, is formed as knot with ventilation fan (hereinafter referred to as " ventilation fan ") and its shutter switching mechanism Structure.
That is, ventilation fan is assemblied in the through hole for being formed at wall, is possessed：Framework (frame), the framework has will ventilation The overall function of supporting and be fixed on wall of fan, its indoor and outside are open respectively；Motor, the motor is supported in Framework；Fan, the fan is removably fixed on the rotary shaft of motor by nose shell (fixed mechanism)；And, hole portion part should Hole portion part is dismantled and assembled, is fixed on framework, and form wind-tunnel with surrounding fan.
Also, the power supply for controlling to supply via power line by using power switch etc., rotate fan (motor) Driving, forms air-flow, to be taken a breath to indoor between the air of side and the air of outside indoors.
In addition, possess shutter in framework, the used in blinds in when without ventilation by indoor with outdoor cut-off.Example Such as, when fan (motor) startup is formed into air-flow by fan, the shutter of wind pressure type is due to the pressure of pushing shutter And be opened (indoor to be connected with outdoor), and stop by fan (motor), when not forming the air-flow of fan, push blinds The distress resolves of window, shutter is closed (indoor and outdoor cut-off).
Shutter has the position near the multiple louver boards configured in parallel to each other, multiple louvered top edges The scope near framework, louvered lower edge is rotatably arranged on parallel shutter axle respectively with to outdoor The mode that side is protruded is rotated.
Also, the position near multiple louvered top edges is provided with the connection shaft parallel with shutter axle, lead to The web for rotatably keeping the connection shaft is crossed, multiple louver boards are interconnected.
In addition, an end of spring (spring) is arranged at web, another end is arranged at framework.That is, constitute For following mechanism：Web is exerted a force by spring (spring) from top, thus, the direction that multiple louver boards are opened by edge Moment of torsion, the amplitude opened with shutter becomes big, and the increased mode of capacity of ventilation fan is aided in.And, although it is configured to Amplitude that shutter is opened is bigger, the auxiliary more increased structure of moment of torsion, but shutter is opened, and spring reduces, Then spring-load is more reduced, and the increase of the moment of torsion of auxiliary is gentler, therefore, discloses following mechanism：Using torsion-coil spring, Auxiliary torque is set to become big relative to the increment rate of the amount of movement of web, to obtain being best suitable for for auxiliary shutter is opened Torque characteristics (for example, referring to patent document 1).
Prior art literature
Patent document
Patent document 1:It is Japanese real be willing to clear No. 61-139472 (opening clear No. 63-46738 in fact) microfilm (page 1, Fig. 1, Fig. 3)
The content of the invention
The invention problem to be solved
But, the spring for the louvered switching mechanism that patent document 1 is recorded is configured in the front of web, therefore, There is switching mechanism becomes large-scale, the problem of depth size of ventilation fan is restricted.
Present invention aim to address above mentioned problem there is provided it is a kind of have make the effect that the increment rate of opening and closing auxiliary torque increases Fruit and small-sized shutter switching mechanism and the ventilation fan with the shutter switching mechanism.
Means for solving the problems
The shutter switching mechanism of the present invention is characterised by having：The framework of rectangular shape；Multiple louver boards, its Position near one lateral margin is rotatably arranged at above-mentioned framework；Multiple shutter arms, it is fixed on the plurality of shutter Near one lateral margin of plate, and it is respectively relative to above-mentioned multiple louver board inclinations；Web, it is by the plurality of shutter arm phase Mutually link；Spring, it is installed across a pair of shutter arms in above-mentioned multiple shutter arms, by the spring effect in described The moment of torsion of a shutter arm in a pair of shutter arms, with it is another in the pair of shutter arm by the spring effect The moment of torsion of individual shutter arm, it is different at least one party of size and Orientation.
The effect of invention
The shutter switching mechanism of the present invention is due to being said structure, so can become small-sized, and by suppressing bullet The decline of spring load, makes the increment rate of opening and closing auxiliary torque become big, so as to obtain appropriate auxiliary torque characteristic.
That is, the spring of shutter switching mechanism of the invention is pacified across a pair of shutter arms (carrying out identical movement) Dress, therefore need not be such as the space of the spring configuration as shown in Figure 1 of patent document 1, correspondingly, can be by blinds Window switching mechanism forms thin (small), in addition, with the as shown in Figure 3 of patent document 1, spring across web and framework (not moving) the structure installed it is different, the deflection of spring diminishes.
Brief description of the drawings
Fig. 1 is the overall stereogram for the shutter switching mechanism for representing embodiments of the present invention 1.
Side view when Fig. 2 is the shutter closing for representing the shutter switching mechanism shown in Fig. 1.
Side view when Fig. 3 is the shutter opening for representing the shutter switching mechanism shown in Fig. 1.
Fig. 4 A are that (shutter is closed for illustrating the side view of the variation of moment of torsion arm lengths C, D of the shutter shown in Fig. 1 When (θ=0 °)).
Fig. 4 B are for illustrating that the side view of the variation of moment of torsion arm lengths C, D of the shutter shown in Fig. 1 (open by shutter To (θ=30 °) during centre position).
Fig. 4 C are that (shutter is significantly for illustrating the side view of the variation of moment of torsion arm lengths C, D of the shutter shown in Fig. 1 When degree is opened (θ=60 °)).
Fig. 5 A are for explaining the open angle θ of the shutter shown in Fig. 1 and the relation of moment of torsion arm lengths C, D Side view (when shutter is closed (θ=0 °)).
Fig. 5 B are for explaining the open angle θ of the shutter shown in Fig. 1 and the relation of moment of torsion arm lengths C, D Side view (when shutter is opened (0 ° of θ ＞)).
Fig. 6 A are the relations for open angle θ and moment of torsion arm lengths C, D for illustrating the shutter shown in Fig. 5 B (when shutter is opened (0 ° of θ ＞), the enlarged side view of the part of shutter arm.
Fig. 6 B are the relations for open angle θ and moment of torsion arm lengths C, D for illustrating the shutter shown in Fig. 5 B (when shutter is opened (0 ° of θ ＞), the enlarged side view of the part of another shutter arm.
Fig. 7 A are that the deflection for illustrating spring suppresses showing for the action of the spring of situation, expression present invention bindiny mechanism It is intended to and the formula on the parameter in the schematic diagram.
Fig. 7 B are deflection suppression situation, spring representing the bindiny mechanism for comparing the actions for illustrating spring Schematic diagram and the formula on the parameter in the schematic diagram.
Fig. 8 is to illustrate the schematic diagram of bindiny mechanism, shutter moment of torsion arm lengths for comparing and on this The formula of parameter in schematic diagram.
Fig. 9 is due to deadweight by the auxiliary torque of the present invention, the auxiliary torque for the bindiny mechanism that compares, shutter The chart that the moment of torsion of closing is relatively represented and compared with shutter open angle θ.
Figure 10 is the stereogram for representing each isolation of components of the ventilation fan of embodiments of the present invention 2.
Embodiment
[embodiment 1]
Fig. 1~Fig. 3 is the figure for the shutter switching mechanism for illustrating embodiments of the present invention 1, and Fig. 1 is to represent overall to stand Body figure, Fig. 2 is to represent side view when shutter is closed, and Fig. 3 is to represent side view when shutter is opened.In addition, each figure Have an X-rayed a part (the side wall of framework) for part and show schematically, therefore the present invention is not limited to the form of diagram.
In Fig. 1~Fig. 3, shutter switching mechanism 100 has：Framework 10, the framework 10 is rectangular shape, by side wall 11st, 12,13,14 encirclements are formed；Louver board 20a, 20b, 20c, the louver board 20a, 20b, 20c are rotatably arranged at (in louver board 20a above and below, louver board 20b and blinds is respectively configured in relative side wall 12,14 in framework 10 Luffer boards 20c).
Louver board 20a, 20b, 20c have shutter face 21a, 21b, 21c of rectangular shape, and turn in shutter Framework 10 is rotatably arranged on moving axis 41a, 41b, 41c, described shutter rotary shaft 41a, 41b, 41c are arranged on blinds Position near window face 21a, 21b, 21c (upside in Fig. 1) lateral margin 22a, 22b, 22c.
In addition, the position near lateral margin 22a, 22b, a 22c, is fixed with relative to shutter face 21a, 21b, 21c Inclined (not parallel with shutter face 21a etc. or not on the same face) shutter arm 40a, 40b, 40c, shutter arm 40a, 40b, 40c are being arranged on shutter arm 40a, 40b, 40c link rotary shaft 43a, 43b, 43c, are mutually interconnected by web 30 Knot.
In addition, being respectively arranged with spring mountings 45a, 45b on shutter arm 40a, 40b, spring 50 is pacified across spring Install dress portion 45a and spring mountings 45b.That is, an end of spring 50 is locked to spring mountings 45a, another end Portion is locked to spring mountings 45b.
Now, spring 50 is mounted with the state for extending or compressing, therefore, on shutter arm 40a and shutter arm 40b (on louver board 20a and louver board 20b), effect has the moment of torsion for rotating in mutually opposite directions them.
Herein, spring 50 is installed across shutter arm 40a and shutter arm 40b, but the present invention is not limited and this, Shutter arm 40b can be replaced, spring mountings 45c is set on shutter arm 40c, across shutter arm 40c and blinds Spring 50 is installed window arm 40a.
In addition, the present invention is not limited to three pieces of louver boards 20a, 20b, 20c, as long as louver board is multiple, Ke Yishi Any block.
In addition, following, in the case of the common content of explanation all parts (position), omission invests part (position) Reference suffix " a, b, c " record.
Also, due to can also be by a part of bending machining of louver board 20, by shutter arm 40 and louver board 20 Be integrally formed, thus shutter rotary shaft 41 equivalent to louver board 20 rotary shaft or be shutter arm 40 rotation Axle.In addition, the structure of shutter rotary shaft 41 is not limited and this, axle portion or bearing portion can also be respectively arranged at affixed side or Any one party of rotating side.
In figure 3, when the blast for making another (downside in Fig. 2) lateral margin 23 in shutter face 21 be moved to upper right When acting on shutter face 21, louver board 20 and shutter arm 40 are square counterclockwise for pivot edge with shutter rotary shaft 41 To rotation.
So, along with above-mentioned rotation, act on the moment of torsion arm lengths C (reference picture 4) of shutter arm 40a moment of torsion and make Moment of torsion arm lengths D (reference picture 4) for shutter arm 40b moment of torsion changes, therefore, as the difference of the two moments of torsion, Produce " opening and closing auxiliary torque " (on this, explaining in addition).
Fig. 4 is the side view in order to illustrate the variation of moment of torsion arm lengths C, D in Fig. 3 and show schematically, Fig. 4 A represent hundred When leaf window is closed (θ=0 °), Fig. 4 B represent that shutter is opened to (θ=30 °) during centre position, and Fig. 4 C represent shutter significantly During opening (θ=60 °).
In Fig. 4, in the line segment using shutter rotary shaft 41a and spring mountings 45a is linked as rotation line segment 46a, It is radius of turn as " A " that line segment 46a length, which will be rotated, will link shutter rotary shaft 41b and spring mountings 45b line Duan Zuowei rotate line segment 46b, using rotate line segment 46b length be radius of turn as " B " when, on above-mentioned radius of turn, deposit In " A ＞ B " relation.
In addition, being that load perspective is made by spring 50 (load direction of spring 50) and rotation line segment 46a angulations For " α ", using spring 50 (load direction of spring 50) and rotation line segment 46b angulations be load perspective as " β " when, with As louver board 20 is opened (open angle " θ " increase), load perspective α increases towards right angle, on the other hand, load perspective β Towards the mode of 0 ° of reduction, configuration spring mountings 45a, 45b.
Thus, spring 50 is so that " spring-load Q " pulls shutter arm 40a, 40b respectively.
So, on shutter arm 40a, effect has edge by " the torque T a ", " torsion in the louver board 20a directions opened Square Ta " be " spring-load Q " with " the moment of torsion arm lengths C that Asin α " are calculated product " and QC=QAsin α ", another aspect, On shutter arm 40b, produce along by the louver board 20b directions closed " torque T b ", should " torque T b " be " spring-load Q " With with " the moment of torsion arm lengths D that Bsin β " are calculated product " and QD=QBsin β ", due to shutter arm 40a and shutter arm 40b by Web 30 is connected, therefore, as the difference (Ta-Tb) of two moments of torsion, and shutter switching mechanism 100 produces opening and closing auxiliary torque.
Then, when louver board 20 is rotated by blast along the direction of opening (reference picture 4B and Fig. 4 C), spring peace Dress portion 45a and spring mountings 45b distinguishes in rotary moving, shutter arm 40a moment of torsion arm lengths C elongated (C ＞ D), thus, hundred The torque T a increases for the direction effect that louver board 20a is opened on the edge produced on leaf luffer boards 20a, on the other hand, due to blinds Window arm 40b moment of torsion arm lengths D shortens, the torsion that the direction that louver board 20b is closed on the edge produced on louver board 20b is acted on Square Tb is reduced.Therefore, in shutter switching mechanism 100, the amplitude that louver board 20 is opened is bigger, is opened and closed auxiliary torque ((Ta-Tb) ＞ 0) more increases.
In addition, when louver board 20 is rotated, spring mountings 45a, 45b are in rotary moving in same direction, therefore, with The situation that one end of spring 50 is installed on into framework 10 is compared, and the deflection of spring 50 diminishes, thus, is suppressed under spring-load Drop, can make the increment rate of the moment of torsion (opening and closing auxiliary torque) of generation become big.
In addition, under the state (state small open angle θ, reference picture 4A) that shutter is closed, due to moment of torsion arm lengths C (C ＜ D) shorter than moment of torsion arm lengths D, therefore, what the direction that louver board 20a is opened on the edge produced on louver board 20a was acted on Torque T a is smaller (Ta ＜ Tb) than the torque T b for the direction effect that louver board 20b is closed on the edge that is produced on louver board 20b.Cause This, shutter switching mechanism 100 produces the opening and closing auxiliary torque in the direction closed along shutter, and louver board 20 is closed The mode function of (being not easy to open).
As described above, in shutter switching mechanism 100, according to radius of turn A, B and load perspective α, β value, moment of torsion There is " C ＜ D " and " C ＞ D ", by suitably selecting these values, so as to auxiliary according to destination adjustment opening and closing in arm Help moment of torsion.That is, by arbitrarily assigning the radius of turn and load perspective of spring set-point, shutter open angle can be adjusted With the correlation properties between opening and closing auxiliary torque.
In addition, the situation that spring 50 is extension spring (producing spring-load by extending) is explained above, but the present invention It is not limited to extension spring or compression spring (producing spring-load by compressing).
In addition, in the case where shutter switching mechanism 100 is applied into the wind pressure type shutter of wall installation, blinds Luffer boards 20 generally have following feature：The amplitude that louver board 20 is opened is bigger, " the side that the edge produced by blast is opened More decline to the torque T o " of effect, on the other hand, the amplitude that louver board 20 is opened is bigger, " by the weight of louver board 20 The torque T s " for the direction effect that the edge of generation is closed more increases.Therefore, (beaten in the small scopes of the open angle θ of louver board 20 Open untill to a certain degree), there are " To ＞ Ts ", even if therefore without the auxiliary of shutter switching mechanism 100, louver board 20 It can open.
Therefore, in scope small the open angle θ of louver board 20, even if there is " C ＜ D " relation, blinds in torque arm The auxiliary torque in the direction that the edge that window switching mechanism is produced is closed is also smaller than " To-Ts ", the problem of in the absence of in action.
Furthermore, it is desirable to which torque arm turns into, " situation of C ＞ D " relation is that open angle θ becomes big, becomes " To ＜ Ts " feelings Condition, now, can obtain following effect：Suppress the deformation of spring 50, produce the opening and closing auxiliary torque needed.
Fig. 5 and Fig. 6 are for explaining the open angle θ of louver board 20 and the relation of moment of torsion arm lengths C, D Figure, Fig. 5 A are the side views of (θ=0 °) when shutter is closed, and Fig. 5 B are the side views of (0 ° of θ ＞) when shutter is opened, and Fig. 6 A are The enlarged side view of the part of one shutter arm of (0 ° of θ ＞) when shutter is opened, Fig. 6 B are when shutter is opened (0 ° of θ ＞) Another shutter arm part enlarged side view.
In Figure 5, (turn when by the straight line for linking shutter rotary shaft 41a and shutter rotary shaft 41b with linking shutter Moving axis 41c is identical with shutter rotary shaft 41b straight line) as datum line 15, by datum line 15 with rotating formed by line segment 46a Angle is as " α ＇ " regard datum line 15 as " β ＇ ", by shutter rotary shaft 41a and hundred with rotation line segment 46b angulations When leaf window rotary shaft 41b distance is as " E ", using the open angle θ with louver board 20 (equivalent to datum line 15 and blinds The angulation of window face 21) relation, the length S of moment of torsion arm lengths C, D and spring 50 can represent with following formula.
In addition, by the distance on spring mountings 45a and spring mountings 45b, vertical direction with datum line 15 As " x ", the distance on spring mountings 45a and spring mountings 45b, parallel with datum line 15 direction is regard as " y ".
[formula 1]
C=Asin (α '+θ-γ)
D=Bsin { 180- (β '+θ)+γ }
X=Asin (α '+θ)-Bsin (β '+θ)
Y=Acos (α '+θ)-Bcos (β '+θ)+E
α '+θ-γ=α
180- (β '+θ)+γ=β
That is, by using above-mentioned formula, shutter switching mechanism 100 can determine following structure (length of each several part and Angle between each several part)：The structure be used to ensuring to make torque arm turn into " the open angle θ of C ＞ D " relation scope (into For " the open angle θ of C ＜ D " relation higher limit).
Therefore, it is possible to while small-sized (slim), select and there is desired closing characteristic.
(effect that spring deflection suppresses)
Fig. 7 A and Fig. 7 B be illustrate spring deflection suppress situation figure, Fig. 7 A be represent the present invention bindiny mechanism in Spring action schematic diagram and formula on the parameter in the schematic diagram, Fig. 7 B represent the patent document 1 for comparing Fig. 3 shown in bindiny mechanism in spring action schematic diagram and formula on the parameter in the schematic diagram.
In fig. 7, as described above, the length " S " of the spring 50 when shutter switching mechanism 100 is acted (rotation) Represented by formula 1a~formula 2c.
In addition, its length (S of its length (S) after deformation relative to shutter when fully closed0(it is following, on conduct Addition suffix 0 is represented after the symbol of shutter open angle θ function, the symbol when representing that shutter is fully closed)) ratio (S/S0) it is formula 3a, form as being write as formula 3b therefore, it is possible to which above-mentioned formula is substituted into.In addition, in Pythagorean theorem, formula 3b The right square root in denominator and molecule be all positive number.It will deploy in the square root of the formula, and adding with trigonometric function Method theorem is arranged, then can be write as form as formula 3c.
[table 1]
In addition, in figure 7b, its length (R of its length (R) relative to shutter when fully closed after deformation0) ratio Example (R/R0) as procedure described above, it can be write as formula 4a~form as formula 4c.
Herein, if the present invention attachment structure in deformation after its length ratio (S/S0) than being used for what is compared Ratio (the R/R of its length after deformation in attachment structure0) greatly, be connected with inequality, then as formula 5a, accordingly, it is capable to It is enough to be write as form as formula 5b as procedure described above.
Also, in order to simplify formula and the size to each position is arranged, " F=A ", " ε=α ＇ ", " G are substituted on the right =E-Bcos β ＇ " and " H=Bsin β ＇ " are simultaneously arranged, and obtain formula 5c.Now, each parameter in formula 5c is formula 6a~formula 6g.
Further, by formula 5c both sides square and common item is arranged, obtains formula 7, formula 6 is brought back to each in formula 7 In parameter and calculate, then obtain formula 8.
That is, if formula 8 is set up, the effect of spring deflection suppression can be obtained.
(increment rate of opening and closing auxiliary torque is become big effect)
By the increment rate of opening and closing auxiliary torque now, the spring constant ks of the structure of invention, spring natural length are utilized SfAnd for spring constant kr, the spring natural length R of the attachment structure comparedf, the moment of torsion arm lengths J shown in Fig. 8 compared Compared with then becoming following formula 9a.But, according to the purposes of embodiment 1, the increment rate of opening and closing auxiliary torque is positive number, in addition, There is " Sf＜ S ＜ S0、Rf＜ R ＜ R0”。
Also, the size and spring performance at each position of two structures are arranged, makes " S0=R0、D0=J0, ks=kr, Sf= Rf", then formula 9a is arranged, formula 9b is obtained.
Therefore, if formula 9a or formula 9b is set up, the increment rate that can obtain being opened and closed auxiliary torque becomes big effect.In addition, In formula 9b, (S/S0) more than (R/R0) greatly, (left side-the right) is bigger, thus, it can be known that by suppressing spring deflection, opening and closing The increment rate of auxiliary torque becomes big.
[table 2]
On the other hand, the increment rate of opening and closing auxiliary torque changes also according to moment of torsion arm lengths C, D, J, accordingly, it would be desirable to consider This point determines each size and angle.The condition that formula 9b is easily set up is (C-D) and D0Value it is big, according to formula 1 and Fig. 8 Calculating formula can speculate that C and J are the close values of comparison, therefore, if obtain D diminish, D0Become big condition.
Consideration D diminishes, D0Become big condition, according to formula 1, due to D=Bsin { 180- (β ＇+θ)+γ }=Bsin (β ＇+ θ-γ), D0=Bsin (β ＇-γ0), as long as therefore angle (β ＇+θ-γ) is close with 0 °, angle (β ＇-γ0) close with 90 ° .Herein, it is considered to angle, θ, γ, γ0Scope, angle, θ is shutter open angle, so be 0 °~70 ° or so, is closed In angle γ and γ0, the purpose that the depth size of shutter switching mechanism diminishes is made according to the present invention, size A phases are made For the small structures of size E, then according to the formula of formula 1, γ is 25 ° or so, γ0It is 0~10 ° or so.Therefore, if making β ＇ be 100 °~120 ° or so, then D diminishes, D0Become big, being readily obtained makes the increment rate of opening and closing auxiliary torque become big effect.
As an example, in the case where making angle be " θ=60 °, α ＇=30 °, β ＇=120 ° ", formula 8 become " 0.5E ＞- 0.866A ", i.e. " (A/E) ＞ -0.577 ", because " A ＞ 0, E ＞ 0 ", therefore the length regardless of A, B, E, can be accessed The effect that spring deflection suppresses.Herein, size is made to be " A=45, B=20, E=90, SfIn the case of=50 ", formula 9b Become " 28.195 ＞ 16.765 " and set up, therefore, it is possible to obtain making the increment rate of opening and closing auxiliary torque to become big effect.
Fig. 9 is the moment of torsion in the direction for closing the opening and closing auxiliary torque of two structures now, louver board due to deadweight The chart that Ts and shutter open angle θ is relatively represented.Ts is " the blinds window gravity center rotated centered on shutter axle " The function of horizontal level, therefore increase on sin curves, the opening and closing auxiliary torque of structure of the invention depicts the song along Ts The characteristic of line, in whole slewing areas of shutter, all obtains the characteristic that shutter is easily opened.
In addition, in the attachment structure for comparing, by making angle ε and size H close to 0, computationally can also obtain To the torque characteristics close with the structure of the present invention, but in fact, in order to not make web or spring excessively be connect with shutter axle Closely disturb, it has to spring mountings is turned into from the remote chi of shutter axle as Fig. 3 of patent document 1 It is very little, and can not realize.
[embodiment 2]
Figure 10 is the figure for the ventilation fan for illustrating embodiments of the present invention 2, by each isolation of components and is showed schematically Stereogram.In addition, for being accompanied by identical reference with the identical part of embodiment 1 or suitable part, and omit one Partial explanation.
In Fig. 10, ventilation fan 200, which is assemblied in, is formed in the through hole of the wall of building (not shown), possesses： The shutter switching mechanism 100 illustrated in embodiment 1；Motor fixed beam 211, the motor fixed beam 211 across hundred Side wall 11,13 ground of the framework 10 of leaf window switching mechanism 100 are fixed；Motor 212, the motor 212, which is fixed on motor, to be consolidated Determine beam 211；Fan 215, the fan 215 is removably fixed on the motor of motor 212 by nose shell (fixed mechanism) 214 Rotary shaft 213；Hole portion part 216, is arranged to the disassembly ease of hole portion part 216 framework 10, surrounds the ground of fan 215 formation wind-tunnel (forming the wind path for guiding the air-supply from fan 215 to louver board 20).
Also, for being connected to the power line 221 of the supply electric power of motor 212 via distributing cabinet 222 with motor 212.
Therefore, (ON) motor 212 is started when user is powered using switch on wall (not shown) etc. to power line 221 When, louver board 20 is by the blast formed by the air-supply from fan 215.Now, the edge illustrated in embodiment 1 makes hundred The opening and closing auxiliary torque for the direction effect that leaf luffer boards 20 are opened acts on louver board 20, therefore, because blast and opening and closing are aided in Moment of torsion, louver board 20 is smooth and reliably opens.
Also, when user, which reuses switch on wall etc., stops (OFF) motor 212, act on shutter face 21 Blast disappear, therefore, the weight of louver board 20 can not be supported by only relying on opening and closing auxiliary torque, and louver board 20 is along closing Direction is rotated.In addition, diminish in shutter aperture, moment of torsion arm lengths become that " after C ＜ D ", the opening and closing along the direction closed is auxiliary Moment of torsion is helped to act on louver board 20, therefore, in the state of shutter closing, even if louver board 20 is by from outdoor wind Blow, it is outer indoors to produce draught head, the state that louver board 20 is also reliably remained turned-off.
As described above, ventilation fan 200 by with can promote miniaturization shutter switching mechanism 100, so as to Become small-sized.
In addition, the present invention, which is not limited to ventilation fan 200 being arranged on, is formed in the through hole of the wall surface of interior next pair The indoor scheme taken a breath or " pressure fan " towards a Lateral supply.
Description of reference numerals
10 frameworks, 11 side walls, 12 side walls, 13 side walls, 14 side walls, 15 datum lines, 20a louver boards, 20b hundred Leaf luffer boards, 20c louver boards, 21a shutters face, 21b shutters face, 21c shutters face, mono- (upside) side of 22a Edge, mono- (upside) lateral margin of 22b, mono- (upside) lateral margin of 22c, another (downside) lateral margin of 23a, 23b another (downside) Lateral margin, 23c another (downside) edge, 30 webs, 40a shutters arm, 40b shutters arm, 40c shutters arm, 41a Shutter rotary shaft, 41b shutters rotary shaft, 41c shutters rotary shaft, 43a link rotary shaft, 43b link rotary shaft, 43c links rotary shaft, 45a spring mountings, 45b spring mountings, 46a rotations line segment, 46b rotations line segment, 50 bullets Spring, 100 shutter switching mechanisms (embodiment 1), 200 ventilation fans (embodiment 2), 211 motor fixed beams, 212 Motor, 213 motor rotation axis, 214 nose shells, 215 fans, 216 hole portion parts, 221 power lines, 222 distributing cabinets.

Claims (5)

1. a kind of shutter switching mechanism, it is characterised in that have：
The framework of rectangular shape；
Position near multiple louver boards, a multiple louvered lateral margin is rotatably arranged at the frame Body；
Multiple shutter arms, the multiple shutter arm is fixed near a multiple louvered lateral margin, and respectively Tilted relative to the multiple louver board；
The multiple shutter arm is interconnected by web, the web；And
Spring, the spring is installed across a pair of shutter arms in the multiple shutter arm,
By the moment of torsion of a shutter arm of the spring effect in the pair of shutter arm, with by the spring effect in The moment of torsion of another shutter arm in the pair of shutter arm, it is different at least one party of size and Orientation.
2. shutter switching mechanism according to claim 1, it is characterised in that
The spring is with the extension spring of the state installation of elongation, or the compression spring installed with the state of compression.
3. shutter switching mechanism according to claim 1, it is characterised in that
Be provided with it is on one shutter arm in the pair of shutter arm of the spring, from being provided with the spring Position be the louver board of the spring mountings to the one shutter arm being fixed with the pair of shutter arm Center of rotation relative to the framework is the distance between shutter axle, the pair of shutter with being provided with the spring It is on another described shutter arm in arm, from the position i.e. spring mountings of the spring are provided with to being fixed with described one Relative to the center of rotation of the framework it is blinds to the louver board of another shutter arm described in shutter arm The distance of window axle is different,
The spring mountings of the one shutter arm of link in the pair of shutter arm and the shutter axle The spring of line and another shutter arm described in the link in the spring angulation, with the pair of shutter arm The line of installation portion and the shutter axle is different from the spring angulation.
4. shutter switching mechanism according to claim 1, it is characterised in that
By making a shutter by the spring in the pair of shutter arm in the range of shutter board rotation The size of the moment of torsion of upper generation and produced on another shutter as described in the spring in the pair of shutter arm The size of moment of torsion is converted, so as to produce the direction effect closed along the shutter board in the state of shutter board closing Opening and closing auxiliary torque.
5. a kind of ventilation fan, it is characterised in that have：
According to shutter switching mechanism according to any one of claims 1 to 4；
Motor, the motor is arranged at the framework；
Fan, is arranged to the fan disassembly ease rotary shaft of the motor；And
Hole portion part, is arranged to the hole portion part disassembly ease framework, and by the air-supply from the fan to described many Individual louver board guiding.
CN201380073316.7A 2013-02-26 2013-02-26 Ventilation fan and shutter switching mechanism Active CN105008811B (en)

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CN110056688A (en) * 2019-04-02 2019-07-26 王加两 A kind of dust pelletizing system and pressure-relief valve
CN114183544B (en) * 2022-02-17 2022-09-06 中国空气动力研究与发展中心设备设计与测试技术研究所 Be used for large-scale environment wind-tunnel high temperature pivot dynamic seal rotation link mechanism subassembly
CN115095910A (en) * 2022-07-08 2022-09-23 上海外高桥造船有限公司 Fan coil for electrical equipment room

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JPS5791032U (en) * 1980-11-25 1982-06-04
JPS6346738U (en) * 1986-09-11 1988-03-30
CN201593368U (en) * 2009-12-10 2010-09-29 上海市电力公司 Operable ventilating radiating shutter
CN102191907A (en) * 2010-03-10 2011-09-21 丁国胜 Anti-theft light-transmitting shutter capable of being freely assembled
JP2012141117A (en) * 2011-01-06 2012-07-26 Panasonic Corp Ventilation shutter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4997948U (en) * 1972-12-12 1974-08-23
JPS5791032U (en) * 1980-11-25 1982-06-04
JPS6346738U (en) * 1986-09-11 1988-03-30
CN201593368U (en) * 2009-12-10 2010-09-29 上海市电力公司 Operable ventilating radiating shutter
CN102191907A (en) * 2010-03-10 2011-09-21 丁国胜 Anti-theft light-transmitting shutter capable of being freely assembled
JP2012141117A (en) * 2011-01-06 2012-07-26 Panasonic Corp Ventilation shutter

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JPWO2014132330A1 (en) 2017-02-02
CN105008811A (en) 2015-10-28
JP5901836B2 (en) 2016-04-13
WO2014132330A1 (en) 2014-09-04
HK1211686A1 (en) 2016-05-27

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