CN100418290C - Action assisting device - Google Patents
Action assisting device Download PDFInfo
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- CN100418290C CN100418290C CNB031041841A CN03104184A CN100418290C CN 100418290 C CN100418290 C CN 100418290C CN B031041841 A CNB031041841 A CN B031041841A CN 03104184 A CN03104184 A CN 03104184A CN 100418290 C CN100418290 C CN 100418290C
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- 230000002093 peripheral effect Effects 0.000 description 12
- 230000005611 electricity Effects 0.000 description 10
- 206010010144 Completed suicide Diseases 0.000 description 7
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- 230000007246 mechanism Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 206010055001 Hypodontia Diseases 0.000 description 2
- 206010002583 anodontia Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005213 hypodontia Effects 0.000 description 2
- 201000006680 tooth agenesis Diseases 0.000 description 2
- 241001212149 Cathetus Species 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A door opening operation auxiliary device for releasing adhesion of a magnet door of a refrigerator or the like is provided. A cam gear (20) is rotated by energizing a motor (12). A gentle slope (22d) of a starting cam (22) rotates a cam follower (24) to release the lock of an output vehicle (26) by a starting arm (29), and the output vehicle (26) with which the one end of a driving spring (28) is engaged is rotated with a sector gear (34) by accumulated force so that a rod (30) successively connected to an engaging rack (32) is protruded from a case (11) to assist origin in releasing the adhesion of the door. The cam gear (20) locks rotation of the output vehicle (26) by a drive arm (29) during a circle of rotation, and fixes an end of the driving spring (28), the other end engaged with the cam gear (20) is linked to a position where a stopping lever (25) locks a stopping (23), and the cam gear is held in a preparing state and a standby state.
Description
Technical field
Manually operated servicing unit when the present invention relates to open the actuating member of refrigerator doors and pull-out element etc., be specifically related to a kind of overcome for expectation locking reliability be used for the magnetic force of magnet of door and door inertia mass, open the Power Component that door and the required manpower of pull-out element are assisted for alleviating.
Background technology
The reducing gear that traditional action assisting device is used by motor, motor rotary decelerating, have final output driving pinion and constitute with the connecting rod of the tooth bar of this tooth bar engagement and the housing of accommodating these members, act on door by the revolution linear drives connecting rod of motor, action detection device is located at connecting rod or reducing gear, make motor just transfer connecting rod is stretched out from housing, to help door to begin to open the door, after having confirmed to become free state after door is opened, motor is stopped, make the motor counter-rotating again, connecting rod is introduced in the housing.
But this device is owing to be to utilize the turning power of motor to carry out the rectilinear motion of connecting rod, so rotating speed directly becomes the opening speed of door, motor acceleration after the input opening signal is failure to actuate during before connecting rod begins to move.Again, common DC motor during as drive source, according to mechanical clearance and load size, can occurred in the time before arriving effective action postponing, produce the difference sense so be difficult to follow the speed sense of wanting the people that opens the door.And, make change action position detecting device that motor just changes, stops and reversing and according to the action circuit of this signal control motor owing to must be provided with, so make the assembly structure complexity, correspondingly make reliability decrease, and increased cost.
For this reason, the object of the invention is that the elastic force that utilization is not subjected to the motor accelerating time and influences realizes that the high speed motion of actuating member is auxiliary.
Summary of the invention
For achieving the above object, action assisting device of the present invention is to be used for device that the action of the full actuating range of actuating member is assisted, it is characterized in that, comprising: engage, make the connecting rod of this actuating member start with described actuating member; Make the gear of this connecting rod action; Make the force application apparatus of this gear start; The drive unit that the application of force of this force application apparatus is saved up strength; Described force application apparatus is remained the holding device of application of force state; And the decontrol of removing the application of force state that keeps by this holding device, in case by this decontrol described application of force state is removed, then described application of force liberation makes described actuating member start by described connecting rod.
Adopt the present invention, the opening speed of connecting rod is provided by the elastic force of torsion-coil spring, can move to be several times as much as the rotating high speed of conventional motors.And the action assisting device of the application of the invention does not for example need the door that is in the weights such as refrigerator of powerful closed state is opened the initiating power of usefulness, even old man's, child, the disabled etc. weak person's power also can be carried out manual operation.
Again, described gear is that helical spring links with the gear that saves up strength that is driven by described drive source by described force application apparatus, by described holding device promptly a side clamping device under the state that ends with described gear card on the driving direction, drive the described gear that saves up strength, when making described helical spring arrive described fixed application of force state, by described holding device is that the opposing party's clamping device blocks and ends, and described helical spring can be remained in described fixed application of force state.
Adopt the present invention, the turning power of motor can only be used for saving up strength of torsion-coil spring, because of moving the auxiliary mechanical force of having utilized this torsion-coil spring, so with move by motor the operate time that appreciable high capacity forms in the auxiliary mechanism variation and be subjected to the electromagnetic force of external temperature influence different, can obtain certain all the time tensile force.
And, in a described side's clamping device, have the sliding part that on the cam surface that is formed at the described gear that saves up strength, slides, constitute the described decontrol that releasing is ended by the card of a described side's clamping device by this sliding part.
Adopt the present invention, can only make the motor revolution carry out the motor control loop omission that positive and negative rotating timing detects with single direction, mechanism is oversimplified comprising.
And described drive source uses stepping motor, the step progression of drive signal is counted, to control a succession of action in each auxiliary cycle.
Adopt the present invention, can omit position transducer, assembly is constituted oversimplify, can reduce cost and improve reliability.
Again, in case just changeing drive the gear that saves up strength make helical spring arrive fixed application of force state, be that the opposing party's clamping device blocks and ends then by holding device, with helical spring remain in fixed application of force state, the inversion driving gear that saves up strength simultaneously, stop the counter-rotating of the gear that saves up strength by the opposing party's holding section, utilize this principle to carry out initialization.
Have a power failure etc. unusual the time, when assembly stops at a certain position and when not seeing the position, returns normal state in order to make assembly, need become the position of assembly action initial point by the arbitrary operation detection of forward or reverse.For this reason, the transducer that can clearly see origin position clearly must be set in driven unit.
Adopt the present invention, when periodicity is confirmed the action initial point of assembly or power failure etc. unusual, can be for carrying out the operation of assembly initialization in the position of holding assembly under the situation of use location transducer not.
From above explanation as can be seen, record according to technical scheme 1, action assisting device of the present invention is to decide the device that the action of scope is assisted in the full actuating range of the door of refrigerator and actuating member such as pull-out element during to initiating, owing to comprising: engage the connecting rod that makes this actuating member start with described actuating member; Make the gear of this connecting rod action; Make the force application apparatus of this gear start; The drive unit that the application of force of this force application apparatus is saved up strength; The holding device that described force application apparatus kept under the fixed application of force state; And releasing is by the decontrol of the application of force state of this holding device, in case described application of force state is removed by this decontrol, then described application of force liberation, make described actuating member start by described connecting rod, therefore, the opening speed of connecting rod is provided by the elastic force of torsion-coil spring, can move to be several times as much as the rotating high speed of conventional motors.And the action assisting device of the application of the invention does not for example need the door that is in the weights such as refrigerator of powerful closed state is opened the initiating power of usefulness, even old man's, child, the disabled etc. weak person's power also can be carried out manual operation.
Description of drawings
Fig. 1 is the save up strength approximate vertical view of state of the action assisting device of the expression embodiment of the invention 1.
Fig. 2 is the approximate vertical view of expression action assisting device actuator state shown in Figure 1.
Fig. 3 is the cutaway view of expression along the III-III line expansion of action assisting device shown in Figure 1.
Fig. 4 is the partial top view of the switch motion of explanation action assisting device shown in Figure 1.
Fig. 5 is the save up strength approximate vertical view of state of the action assisting device of the expression embodiment of the invention 2.
Fig. 6 is the approximate vertical view that the actuating force transmission mechanism section after the power of saving up strength of expression action assisting device shown in Figure 5 is emitted launches.
Fig. 7 is motor and laminar switch loop diagram in the expression action assisting device shown in Figure 5.
Fig. 8 for the expression embodiment of the invention 2 carry out auxiliary operation by action assisting device the time flow chart.
Embodiment
The embodiment of action assisting device of the present invention is described with reference to the accompanying drawings.
(embodiment 1)
Fig. 1 is the vertical view of the preceding state that saves up strength of action assisting device 10 starts among the expression action assisting device embodiment 1 of the present invention.The vertical view of the save up strength power liberation state of Fig. 2 after for the firm start of expression action assisting device 10.Fig. 3 is the cutaway view of expression along the III-III line expansion of Fig. 1.Fig. 4 is the action specification figure of switch sections.
Cooperating the cam follower 24 that constitutes decontrol to be reversed by the outer edge-on fulcrum 24a that establishes that surmounts cam wheel 20 peripheries with initiating cam 22 supports freely, utilizes the application of force of torsion-coil spring 24b that the outer peripheral face that leading section 24c is crimped on initiating cam 22 is slided.The diameter of the outer peripheral face 22a of initiating cam 22 is less than the external diameter of cam wheel 20, and the part is formed with protruding 22b.The structure of projection 22b is to be formed with the face of moving ahead on gently sloping surface 22d, this face that moves ahead is followed to return back to from path outer peripheral face 22a and is positioned at cardinal principle and the convex top 22c of cam wheel 20 external diameters with the position in footpath, earlier via the bigger cambered surface 22e of circular arc, be back to path outer peripheral face 22a from convex top 22c again.
And, cam wheel 20 ends cam 23 integrateds with card and is set up in parallel, be concaved with otch 23b in its periphery, the shape of this otch 23b is with after main shaft 18 clampings, roughly can engage with the leading section 25c property the filled up ground that card ends lever 25 on the correspondence position of reverse side with protruding 22b.Otch 23b ends lever 25 with card and cooperates the opposing party's clamping device that has constituted application of force state holding device.Card ends lever 25 and is reversed by the outer edge-on fulcrum 25a that establishes that surmounts cam wheel 20 peripheries and support freely, the application of force of utilizing helical spring 25b with leading section 25c be crimped on card only the outer peripheral face 23a of cam 23 slide.The relative position relation of protruding 22b and otch 23b is at otch 23b and blocks when only lever leading section 25c card ends that protruding 22b is in moving ahead of gently sloping surface 22d rising and holds the position that engages with cam follower leading section 24c all the time.
And, the external diameter of output wheel 26 be the external diameter of cam wheel 20 and initiating cam outer peripheral face 22a roughly in the middle of size, be concaved with otch 26c on outer peripheral face 26b, the shape of this otch 26c is that the leading section 29a property the filled up ground of the actuating arm 29 that can reverse with coaxial shape one when being cam follower 24 interlocks with decontrol engages.Otch 26c cooperates and constitutes side's clamping device of holding device with actuating arm 29.Again, output wheel 26 is integrally formed with sector gear 34, tooth bar 32 engagements that form on this sector gear 34 and the connecting rod 30 that makes not shown actuating member start.
Be set in housing 11 in the connecting rod 30 of primary position of portion drive by the gear parts 34a engagement of the tooth bar 32 that is connected with sector gear 34.That is, utilize reversing of sector gear 34, connecting rod 30 moves along the miter guide 30a that is located at case lid 11a (oblique line part).The push rod 30b of leading section for example overcomes locking and keeps carrying out complementary opening action with the suction of magnet along with moving from the identical shaped open-work 11b cathetus shape of section of the connecting rod 30 that is arranged in housing 11 sides of connecting rod 30 stretched out and pushing action member (as the door of refrigerator).Then, on the position of the range of connecting rod 30, tooth bar 32 breaks away from engagement with the gear parts 34a of sector gear 34.
The function of the compression helical spring 30c of connecting rod 30 rearward end is to cushion the collision of the miter guide 30a back of stretching out with limiting rod 30, and the push rod 30b after the door start is introduced in the housing 11.When being made connecting rod 30 introduce starts by this compression helical spring 30c, gear parts 34a is turned back to not and tooth bar 32 position engaged, and tooth bar 32 can move freely along hypodontia part 34b.And connecting rod 30 is positioned primary position reliably with the resetting interlock of actuating member that is caused by the locking of door etc.
End the switching mechanism of cam 23 interlocks below with reference to Fig. 4 explanation and card.The restoring lever 35 of ending the L font that lever 25 coaxial shape one reverse with card has short lever 35a and long lever 35b, and the end card of described short lever 35a and torsion-coil spring 25b only.Again, end on the position that the fulcrum 25a of lever 25 separates, make the rocking lever 38 of switch 36 starts reverse to prop up freely and be held in the upright fulcrum 38a that is located in the housing 11 with card.Lever 38b, 38c, the 38d of the length about equally of rocking lever 38 stretch out to the three parts, and utilize the counter clockwise direction (arrow L1) of draft helical spring 40 in figure of being located at the 2nd lever 38c to apply elasticity, form the form of the actuator 36a of the 3rd lever 38d pull switch 36.
On the other hand, restoring lever 35 is utilized the application of force of torsion-coil spring 25b, make counter clockwise direction (arrow L2) in figure apply the 1st lever 38b butt of flexible long lever 35b and rocking lever 38, apply the elasticity of the clockwise direction (arrow R1) from the figure that actuator 36a separates to the 3rd lever 38d, to restrain reversing of the rocking lever 38 that forms by draft helical spring 40.Again, the butt that reverses by the 2nd lever 38c and switch 36 end faces of the rocking lever 38 that is formed by the application of force of long lever 35b is restricted, and the 3rd lever 38d is remained in the position that separates with actuator 36a.
Action to the action assisting device 10 of the example among the embodiment that is applicable to the action assisting device of opening refrigerator doors 1 describes below.At first, as shown in Figure 1, when action assisting device 10 is in the initial state that saves up strength, make to be accommodated in the connecting rod 30 that the push rod 30b in the housing 11 stretch out from housing 11 sides and to be positioned at the aftermost primary position of stroke action scope, output wheel 26 engages and the prevention of will reversing with the leading section 29a of actuating arm 29 by otch 26c.Simultaneously, the cam wheel 20 that driven by stepping motor 12 stops at the only position that engages of the leading section 25c of lever 25 of otch 23b that card that this cam wheel 20 is wholely set ends cam 23 and card, and this position is the starting point and the terminal point of cam wheel 20.
At this moment, on the relative position of the pillar 26a of the pillar 20a of cam wheel 20 and output wheel 26, utilize hook 28a, the 28b of the driving spring 28 that card separately ends to make driving spring 28 torsional deformations and be twisted into the state of saving up strength, and end lever 25 and actuating arm 29 by card and this position is kept and be in standby.
Secondly, operation is arranged at the pusher panel-switch (not shown) of refrigerator in addition, makes stepping motor 12 energisings, will turn round from driving pinion 14 and be passed to cam wheel 20 via train of reduction gears 16,17.The revolution of cam wheel 20 Once you begin, the leading section 24c that then reverses with initiating cam 22 one and be crimped on the cam follower 24 that outer peripheral face 22a slides moves to convex top 22c along the gently sloping surface 22d of protruding 22b, thereby cam follower 24 is reversed to the direction of separating with initiating cam 22.
Soon, the leading section 29a of the actuating arm 29 that reverses with cam follower 24 interlocks and coaxial integrated is disengaged with the engaging of otch 26c of output wheel 26.The reset force of the torsion-coil spring 28 that output wheel 26 utilization is saved up strength is revolution rapidly immediately, the connecting rod 30 that the gear parts 34a of integrally formed sector gear 34 promotes with tooth bar 32 engagements and tooth bar 32 is connected with.In housing 11, the connecting rod 30 that is in the holding state of the aftermost primary position of moving range stretches out push rod 30b from the open-work 11b of housing 11 sides, and the door of the refrigerator of closed state is carried out the action of reversing of complementary liberation direction.Even the weak person's of old man, child, the disabled etc. power also can be with manually coming the operational motion member thereafter.
Connecting rod 30 is after protrusion direction moves, and tooth bar 32 is thrown off the formation free state with the engagement of sector gear part 34a, applies power by the direction of compression helical spring 30c in introducing housing 11.By by manually adding gesture in to the operation of door being got back to locked position of coupler, push rod 30b is pushed in the housing 11 reliably, connecting rod 30 can return primary position at any time under the interference that is not subjected to sector gear part 34a.
The revolution of cam wheel 20 is driven by the energising to stepping motor 12 by initial not shown pusher panel-switch operation, because of making card, this revolution ends cam 23 with 22 revolutions of initiating cam, to block the leading section 25c that ends lever 25 so the inclined-plane 23c of otch 23b overcomes the application of force of torsion-coil spring 25b and upwards push away, restoring lever 35 is reversed along the clockwise direction among the figure (arrow R2) linkedly.Rocking lever 38 is from the long lever 35b liberation of restoring lever 35, and the 3rd lever 38d closes the loop of switch 36 by the application of force of draft helical spring 40.Switch to loop by pusher panel-switch to the energising of stepping motor 12, make cam wheel 20 revolutions from switch 36.
Card ends lever 25 utilizations makes restoring lever 35 reverse along the counter clockwise direction among the figure (arrow L2) by this snap action, the operation of the switch 36 that will be undertaken by the 3rd lever 38d of rocking lever 38 is removed, and the switch loop of drive stepping motor 12 is cut off and stepping motor 12 is stopped.Because the stepping motor 12 after stopping not to have to keep the power of the power that saves up strength.Therefore on the cam wheel 20 otch 23b that ends cam 23 at card and the card position that only lever leading section 25c engages,, driving spring 28 is remained in the state of saving up strength by the fixed-site of pillar 20a with the opposing party's hook 28a of driving spring 28.It is that cam wheel 20 changes 1 terminal point after enclosing that the otch 23b that card ends cam 23 and card end position that lever leading section 25c engage, and the while is again the starting point of auxiliary movement next time, can reproduce the initial state that saves up strength.Below, when opening refrigerator doors, repeat above-mentioned action.
Make the initial point of stepping motor 12 corresponding, to compare with the umber of pulse of revolution 1 circle of cam wheel 20 that remaining umber of pulse is counted and to stepping motor 12 inputs with the starting point of cam wheel 20.Thus, cam wheel 20 stops surmounting the energising that otch 23b that card ends cam 23 and card end on the position of the correct starting point that engages of lever leading section 25c stepping motor 12 slightly.The confining force that does not have stop position because of stepping motor 12, so cam wheel 20 utilizes the reset force of the driving spring 28 that is saved up strength and draws back, the face that the moves ahead 23d of otch 23b and card end the locking surface 25d butt of lever leading section 25c, can be all the time with correct position as starting point.Save up strength device when being the DC motor in use,, at the start time point of switch 36 and between the DC electrical power stops, time-delay is set, can realize same purpose by delay timer being inserted the switch loop.
(embodiment 2)
Fig. 5 is the vertical view of the preceding state that saves up strength of action assisting device 10 starts of the embodiment 2 of expression action assisting device of the present invention.Fig. 6 is the approximate vertical view that the drive system of presentation graphs 5 devices is launched.Fig. 7 is motor and laminar switch loop diagram.Fig. 8 is the flow chart when carrying out auxiliary movement.To the embodiment 2 shown in Figure 8, have the part mark prosign with embodiment 1 identical function at Fig. 5, omit its explanation.
The dissimilarity of embodiment 2 and embodiment 1 is and blocks only laminar switch 50 structures of lever 25 interlocks.This laminar switch 50 only is described here.The bend 50b of the travelling contact 50a of laminar switch 50 ends lever trailing edge 25e bullet with card all the time and connects, and ends reversing of lever 25 with card and passes through strain and bending linkedly.In the time will blocking that only lever leading section 25c engages with holding section 23b, travelling contact 50a separates and the electrical power loop is closed from fixed contact 50c.In case card ends cam 23 revolution counterclockwise, only will block and be pushed into only cam 23 outer peripheral face 23a of card on the lever leading section 25c, then travelling contact 50a ends the swing of lever 25 along with card and crooked backward, with fixed contact 50c crimping in strain and keep reliable and contact.Utilize this contact that the electrical power loop is connected and drive motors 12a.Symbol 50d is the retainer that restriction fixed contact 50c excessively moves.
Fig. 7 is the ideograph of terminal board 51.With terminal No.2 and terminal No.3 short circuit, to terminal No.4 and terminal No.1 auxiliary voltage.Card ends lever leading section 25c and only engages certain on the cam outer peripheral face 23a with card when engage with holding section 23b, and laminar switch 50 remains in on-state, and motor 12a turns round cam wheel 20.Utilization is additional to the polarity of voltage of terminal No.4 and terminal No.1, the gyratory directions difference of cam wheel 20, but when cam wheel 20 turned round less than 1, card ended lever leading section 25c and must engage with holding section 23b, and laminar switch 50 places closed condition and motor 12a is stopped.That is, it is generally acknowledged that be suitable with this stop position as the starting initial point.
When have a power failure to wait the unusual state of affairs that causes in the revolution that cam wheel 20 has taken place and can not see the occasion of the position in cam wheel 20 revolutions clearly, not with the positive revolving die formula (turning anticlockwise) of the device that saves up strength but carry out the initial point setting with reversing mode (revolution clockwise) drive motors 12a.Yet, card end lever leading section 25c in the way of the inclined-plane of holding section 23b 23c with travelling contact 50a separately and electric loop is closed from fixed contact 50c, the situation that generation motor 12a stops before the locking surface 25d that ends lever leading section 25c at card and the face that the moves ahead 23d butt of holding section 23b.This stop position may not necessarily utilize the dynamic inertia of motor 12a and train of reduction gears 16,17 and probabilistic resistance of causing because of friction makes it stable, because of not regarding as correct initial point, so be difficult to starting point is set necessarily all the time.
When drive motors 12a adopts the occasion of DC motor, make the timer start by the shutdown signal of laminar switch 50, the DC motor is stopped.Since card end the locking surface 25d of lever leading section 25c utilize this time control reliably with the face that the moves ahead 23d butt of holding section 23b, can not surmount its front and be subjected to mechanical restriction, thereafter can stopping all the time as initial point and obtain certain position by motor 12a.This delay regulation circuit can easily be realized in the program of microcomputer.
Again, when drive motors 12a uses stepping motor, in a single day laminar switch 50 receives shutdown signal, then by the further additional remaining pulse of fixing a number, the locking surface 25d that card ends lever leading section 25c reliably with the face that the moves ahead 23d butt of holding section 23b, initial point can be set in certain position all the time, the Rotor Position in Stepping Motors of this moment is carried out thereafter control as the counting starting point of umber of pulse.No matter use any motor, all must after initial point is determined, make cam wheel 20 revolutions 1 of positive revolving die formula enclose the operation that saves up strength.
Action to the action assisting device 10 of the example among the embodiment that is applicable to the servicing unit of opening refrigerator doors 2 describes below.At first, when the state that saves up strength at first of action assisting device 10, make to be accommodated in the connecting rod 30 that the push rod 30b in the housing 11 stretch out from housing 11 sides and to be positioned at the aftermost primary position of stroke action scope shown in Figure 5.Again, output wheel 26 engages and the prevention of will reversing with the leading section 29a of actuating arm 29 by otch 26c.And, driving the cam wheel 20 that carries out initial setting by the revolution of motor 12a and stop at the only position that engages of the leading section 25c of lever 25 of holding section 23b that the card that is wholely set ends cam 23 and card, this position is the starting point and the terminal point of cam wheel 20.
At this moment, on the relative position of the pillar 26a of the pillar 20a of cam wheel 20 and output wheel 26, utilize hook 28a, the 28b of the helical spring 28 that card separately ends to make driving spring 28 stranded and torsional deformation becomes the state of saving up strength, this position stops on the rotating position of readiness and is being the action starting point being ended lever 25 and actuating arm 29 by card.
Operation is arranged at the pusher panel-switch (not shown) of refrigerator in addition, makes motor 12a energising, will turn round via train of reduction gears 16,17 and be passed to cam wheel 20.The revolution of cam wheel 20 Once you begin, then reverse with initiating cam 22 one, the leading section 24c that is crimped on the cam follower 24 that its outer peripheral face 22a slides moves to convex top 22c along the gently sloping surface 22d of protruding 22b, thereby cam follower 24 is reversed to the direction of separating with initiating cam 22.
The result is actuating arm 29 and the revolution of cam follower 24 one, removes the leading section 29a of actuating arm 29 and engaging of the holding section 23b that output wheel 26 is remained in the position of saving up strength.Output wheel 26 utilizes the reset force revolution rapidly immediately of the helical spring 28 after saving up strength, and the gear parts 34a of integrally formed sector gear 34 and tooth bar 32 engagements promote the connecting rod 30 that is connected with tooth bar 32 fast.The rear portion of moving range in housing 11, the connecting rod 30 that remains in holding state by compression helical spring 30c on the position stretches out push rod 30b and the action of reversing of the door liberation direction of the refrigerator of closed state is assisted from the open-work 11b of housing 11 sides in the early stage.Its result is even old man's, child, the disabled etc. weak person's power also can be with manually coming the operational motion member.
Connecting rod 30 is after protrusion direction moves, and tooth bar 32 is thrown off with the engagement of sector gear part 34a and formed free state, by the direction application of force of compression helical spring 30c in introducing housing 11.By by manually adding gesture in the reset operation to locked position of coupler, push rod 30b is pushed in the housing 11 reliably, and connecting rod 30 can return primary position at any time under the interference that is not subjected to sector gear part 34a.
On the position of saving up strength, by the output wheel 26 that keeps the state that saves up strength push rod 30b is stretched out, do to switch on to motor 12a by terminal No.3 and terminal No.4 by not shown pusher panel-switch at first when auxiliary starting of the door of refrigerator.The result is that cam 23 turns round along with the revolution of cam wheel 20 initiating cam 22 with only blocking, the inclined-plane 23c that this card ends the holding section 23b of cam 23 overcomes the application of force of helical spring 25b and will block the leading section 25c that ends lever 25 and upwards push away, and with it travelling contact 50a of laminar switch 50 is contacted with fixed contact 50c.When carrying out this auxiliary movement, because of laminar switch 50 is in on-state, so behind the auxiliary movement, when carrying out that output wheel 26 returned the homing action of the position of saving up strength, switch to the loop of forming by terminal No.1 and terminal No.4 to motor 12a energising by pusher panel-switch by laminar switch 50 operations, rely on self action should laminar switch 50 to place and close, can motor be stopped by stopping auto-suicide switch.
After this auxiliary movement, output wheel 26 carries out homing action, the state of the position that keeps until dividing a word with a hyphen at the end of a line to saving up strength.The helical spring 28 of output wheel 26 through becoming the free shape after emitting the power of saving up strength is driven in cam wheel 20 and turns round, to the torsion-coil spring 24b of cam follower 24 application of force, and on the position of actuating arm leading section 29a that periphery is slided and otch 26c interlock, will turn round prevention.That is, because of output wheel 26 locked in this position, so the position of side's hook 28b of the helical spring 28 that engages with the pillar 26a that is arranged at output wheel 26 also is fixed.Cam wheel 20 continues revolution and to the helical spring 25b application of force in further distortion helical spring 28, the card that slides on outer peripheral face 23a ends lever leading section 25c and falls into the holding section 23b that card ends cam 23, and output wheel 26 is remained in becomes the position of saving up strength of the state of saving up strength.In addition, the sector gear 34 that reverses with output wheel 26 stops at the place, front that returns tooth bar 30 engagements of primary position with the end that moves ahead of gear parts 34a.
When card ends lever leading section 25c and falls into the holding section 23b that card ends cam 23, to end laminar switch 50 that reversing of lever 25 will formation suicide switch by card and place and close, the electrical power loop is cut off and motor 12a is stopped.Because the stepping motor 12a after energising stops not to have to keep the power of the power that saves up strength, therefore cam wheel 20 application of force of utilizing the helical spring 28 that side's hook 28b is fixing is drawn back the movable part of surplus, the locking surface 25d that card ends lever 25 reliably with the holding section face 23d crimping that moves ahead, but mechanicalness determines helical spring 28 is remained in the initial point of the state of saving up strength.This initial point is the terminal point after cam wheel 20 counterclockwise changes 1 circle, is again simultaneously that the starting point of auxiliary movement is next time also reproduced the state that saves up strength.Below, when opening refrigerator doors, repeat above-mentioned action.
As not using the suicide switch with the method that motor 12a stops when the homing action, be to be motor 12a as drive unit, to compare residual count and to import stepping motor with the umber of pulse of revolution 1 circle of cam wheel 20 with stepping motor.Thus, only the holding section 23b and the card of cam 23 only stop energising in the position of the correct clamped position of lever leading section 25c surmounting card slightly in the revolution of cam wheel 20.Owing to there is not the confining force of stop position on the stepping motor, therefore utilize the reset force of the helical spring 28 that is saved up strength that cam wheel 20 is drawn back, the face that the moves ahead 23d of holding section 23b can be crimped on card and only be defined as the mechanicalness initial point in the correct all the time position of the locking surface 25d of lever leading section 25c.Therefore, can will return the zero point of step-by-step counting corresponding to the Rotor Position in Stepping Motors of this position and as pulse controlled initial point.
Again, as using when the homing action suicide switch to make the method for shutting down of motor 12a, be will be as the motor 12a of drive unit as the DC motor, delay timer is inserted in the switch loop, stop between the energising time-delay being set at the start time point of laminar switch 50 and to the DC motor, stop energising surmounting slightly on the rotary position of cam wheel 20 that holding section 23b that card ends cam 23 and card end the correct clamped position of lever leading section 25c, the reset force of the helical spring 28 that is saved up strength draws back cam wheel 20, the face that the moves ahead 23d of holding section 23b is crimped on the locking surface 25d that card ends lever leading section 25c, can achieves the goal equally.
Control method below with reference to process description shown in Figure 8 action assisting device 10 of the present invention.
This flowcharting be that motor 12a is just changeed, push rod 30b is stretched out and the auxiliary movement that starts work of auxiliary refrigerator doors (step S1～S9) and make output wheel 26 return homing action (the step S10～S17) of the position of saving up strength in this auxiliary movement rear motor 12a spline by the output wheel 26 that remains in force application location.
(step S1～S11) gives method for electrically, is to terminal No.3 shown in Figure 7 and terminal No.4 service voltage by not shown control device as auxiliary movement.Again, also can make terminal No.2 and terminal No.3 short circuit, to terminal No.2 and terminal No.4 service voltage.
At first, press the pusher panel-switch that is arranged in addition on the refrigerator or by any checkout gear of being located at point contact type transducer on the rib etc., in case with auxiliary operation commencing signal input control device (step S1), then carry out the affirmation of the open and-shut mode of door, to judge whether entering auxiliary movement (step S2).According to this result, when the opened state of door, be judged as and need not carry out auxiliary movement, stop immediately to motor 12a give electricity (step S9), auxiliary movement finishes at this time point.
On the other hand,, begin to electricity,, make motor 12a just change (step S4) to carry out auxiliary movement (step S3) to motor 12a when door is in when closing state.Again, roughly with in this step S4 carrying out the affirmation (step S5) of an open and-shut mode, then, roughly with in this step S5 carrying out the detection (step S6) of giving the electricity time to motor 12a.Promptly, in order after giving electricity, to move a succession of racking of assisting through bar 30b is stretched out to finish opening of opposite house reliably to motor 12a, set this 3 second (step S7) by timer, through stop after 3 seconds to motor 12a give electricity (step S9), and finish auxiliary movement at this time point.In addition, the setting-up time of timer can corresponding with the end of auxiliary movement and suitably be set.
Again, before giving electric 3 seconds, be in out the occasion that state is confirmed, can be considered door and open (step S8), stop giving electric (step S9), and finish auxiliary movement at this time point to motor 12a by step S5 opposite house to motor 12a.
Then, stopping by this step S9 in the giving electricity and finish auxiliary movement of motor 12a, dividing a word with a hyphen at the end of a line until making output wheel 26 remain in homing action (the step S10～S17) of force application location.
When this homing action (step S10～S 17) is divided a word with a hyphen at the end of a line, will give by being changed to from terminal No1 and terminal No.4 of terminal No.3 shown in Figure 7 and terminal No.4 voltage to TURP by not shown control device.Promptly, during auxiliary movement, laminar switch 50 is placed on-state, by switching to the loop of the laminar switch 50 that forms by terminal No.1 and terminal No.4, constitute the action that relies on self and make this laminar switch 50 place closed condition and suicide switch that action is stopped.
To motor 12a stopped for 1 second to electricity after (step S10), begin just to change (step S12) to motor 12a once more to electricity (step S11) and motor 12a, begin homing action.
Roughly with in this step S12 carrying out the detection (step S13) of giving the electricity time to motor 12a.In order after through 3 seconds, to finish a series of homing action reliably, set this 3 second (step S14) by timer, give electricity (step S15) through stopping after 3 seconds to terminal No.1 and terminal No.4 voltage, in addition, the setting-up time of timer can suitably be set accordingly with the end of auxiliary movement.
On the other hand, before giving electric 3 seconds to motor 12a, make laminar switch 50 place closed condition in the homing action that finishes self, formation suicide switch cuts out (step S16), closes by the suicide switch motor 12a is stopped to finish homing action (step S17).
More than, with reference to description of drawings the embodiment of action assisting device of the present invention, but the present invention is not limited to illustrated embodiment, in its shape and configuration aspects, in the scope that does not break away from constitutive requirements of the present invention, can carry out reconstructing of various changes and member and change various changes such as combination among the embodiment thin portion.For example, saving up strength of spring can be adopted DC motor and electromagnetically operated valve, can use draft helical spring and compression helical spring as spring.Again, those skilled in the art can easily infer, even directly with manually coming mechanicalness operation initiating cam 22 or actuating arm 29, also can also can obtain same effect by the effect of saving up strength of being brought into play spring by motor.
Claims (5)
1. action assisting device is used for the action of the full actuating range of actuating member is assisted,
It is characterized in that, comprise: engage, make the connecting rod of this actuating member start with described actuating member, make the gear of this connecting rod action, make the force application apparatus of this gear start, the drive unit that the application of force of this force application apparatus is saved up strength, described force application apparatus is remained the holding device of application of force state, and remove decontrol by the application of force state of this holding device maintenance; In case by this decontrol described application of force state is removed, then described application of force liberation makes described actuating member start by described connecting rod.
2. action assisting device as claimed in claim 1, it is characterized in that, described gear links with the gear that saves up strength that is driven by described drive unit through the helical spring as described force application apparatus, under the state that ends with described gear card on the driving direction, drive the described gear that saves up strength by clamping device as a side of described holding device, when making described helical spring arrive the application of force state of described force application apparatus, block the application of force state that only described helical spring is remained in described force application apparatus by the opposing party's clamping device as described holding device.
3. action assisting device as claimed in claim 2, it is characterized in that, in a described side's clamping device, have the sliding part that slides on the cam surface that is being formed at the described gear that saves up strength, constitute the described decontrol that releasing is ended by a described side's clamping device card by this sliding part.
4. action assisting device as claimed in claim 1 is characterized in that, described drive unit use stepping motor is counted the step progression of drive signal, and controls the action in each auxiliary cycle.
5. action assisting device as claimed in claim 2, it is characterized in that, make described helical spring arrive the application of force state of described force application apparatus in case just changeing the described gear that saves up strength of driving, promptly block and end and described helical spring is remained in the application of force state of described force application apparatus by clamping device as the opposing party of described holding device, the described gear that saves up strength of inversion driving utilizes the clamping device by described the opposing party to stop the counter-rotating of the described gear that saves up strength and carry out initialization simultaneously.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200238504 | 2002-02-15 | ||
| JP2002038504A JP3887243B2 (en) | 2002-02-15 | 2002-02-15 | Operation assistance device |
| JP2002226842 | 2002-08-05 | ||
| JP2002226842A JP4112303B2 (en) | 2002-04-01 | 2002-08-05 | Operation assistance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1438750A CN1438750A (en) | 2003-08-27 |
| CN100418290C true CN100418290C (en) | 2008-09-10 |
Family
ID=27736517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031041841A Expired - Fee Related CN100418290C (en) | 2002-02-15 | 2003-02-13 | Action assisting device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100522474B1 (en) |
| CN (1) | CN100418290C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230027664A (en) * | 2021-08-19 | 2023-02-28 | 엘지전자 주식회사 | refrigerator and operating method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5988709A (en) * | 1997-09-08 | 1999-11-23 | Daewoo Electronics Co., Ltd. | Opening and closing device of a refrigerator door |
| CN1274189A (en) * | 1999-05-12 | 2000-11-22 | 株式会社三协精机制作所 | Action auxiliary device |
| CN1330443A (en) * | 2000-06-26 | 2002-01-09 | 株式会社三协精机制作所 | Rotating stop mechanism and gear drived electric machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417549A (en) * | 1990-05-08 | 1992-01-22 | Sankyo Seiki Mfg Co Ltd | Motor actuator |
| JPH0979291A (en) * | 1995-09-18 | 1997-03-25 | Denso Corp | Thrust actuator |
| JPH10184847A (en) * | 1996-12-26 | 1998-07-14 | Canon Inc | Power dividing device |
| KR100373150B1 (en) * | 1999-06-10 | 2003-02-25 | 가부시기가이샤 산교세이기 세이사꾸쇼 | Operation assisting device |
| JP2002350043A (en) * | 2001-05-29 | 2002-12-04 | Matsushita Refrig Co Ltd | Door releasing apparatus and refrigerator with door releasing apparatus |
-
2003
- 2003-02-11 KR KR10-2003-0008394A patent/KR100522474B1/en not_active IP Right Cessation
- 2003-02-13 CN CNB031041841A patent/CN100418290C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5988709A (en) * | 1997-09-08 | 1999-11-23 | Daewoo Electronics Co., Ltd. | Opening and closing device of a refrigerator door |
| CN1274189A (en) * | 1999-05-12 | 2000-11-22 | 株式会社三协精机制作所 | Action auxiliary device |
| CN1330443A (en) * | 2000-06-26 | 2002-01-09 | 株式会社三协精机制作所 | Rotating stop mechanism and gear drived electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100522474B1 (en) | 2005-10-18 |
| CN1438750A (en) | 2003-08-27 |
| KR20030069059A (en) | 2003-08-25 |
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Owner name: NIDEC SANKYO CORP. Free format text: FORMER NAME OR ADDRESS: SANKYO SEIKI MFG. SEISAKUSHO K.K. |
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