CN208550527U - A kind of automatic switch drawer mechanism and refrigerator - Google Patents
A kind of automatic switch drawer mechanism and refrigerator Download PDFInfo
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- CN208550527U CN208550527U CN201721525162.2U CN201721525162U CN208550527U CN 208550527 U CN208550527 U CN 208550527U CN 201721525162 U CN201721525162 U CN 201721525162U CN 208550527 U CN208550527 U CN 208550527U
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Abstract
The utility model discloses a kind of automatic switch drawer mechanisms, including the power input unit with motor；Output gear train with output rack gear, output rack gear are securely attached to drawer；And the clutch tooth train with electromagnetic clutch mechanism.Electromagnetic clutch mechanism includes castle wheel piece, is suitable for rotating under the drive of the motor；Clutch output wheel is coaxially disposed with castle wheel piece, and it is mobile to be suitable for driving output rack gear；And electromagnet mechanism and resetting-mechanism.When electromagnet mechanism is powered, driving clutch output wheel is close in the axial direction with castle wheel piece and engages, so that driving force is transferred to output rack gear, to open or close drawer.When electromagnet mechanism power-off, resetting-mechanism driving clutch output wheel is axially away from and disengages with castle wheel piece, so that driving force is not passed to output rack gear, to stop opening or closing drawer.
Description
Technical field
The utility model belongs to refrigerator art, and in particular to a kind of for being automatically switched the mechanism of refrigerator drawer.
Background technique
Existing, the drawer door of the household electrical appliance (such as refrigerator) with drawer is all made of manually opened and closes, thus real
The storage and taking-up of existing article.When drawer memory storing articles are more, drawer own wt is increased, particularly with old man, child
For, not only difficulty is big for manually opened drawer, but also has the possibility in the presence of injury personal safety.Such case is prevalent in often
A family.
Accordingly it is desirable to which a kind of refrigerator drawer automatic switch mechanism can be integrated or be installed in refrigerator, it is able to satisfy
It needs the storage in refrigerator or automatically opens and closes drawer when taking out article, to allow old man and children to facilitate and pacify
Full operation.
Utility model content
To solve the above-mentioned problems, one side according to the present utility model proposes a kind of automatic switch drawer mechanism, institute
Stating mechanism includes power input unit, including motor, for exporting rotate driving power；Output gear train, including output rack gear, output
Rack gear is securely attached to drawer；Clutch tooth train, including electromagnetic clutch mechanism.The electromagnetic clutch mechanism includes: castle wheel piece,
It is suitable for being rotated by the motor；Clutch output wheel is coaxially disposed with the castle wheel piece, and is suitable for driving institute
It is mobile to state output rack gear；And electromagnet mechanism and resetting-mechanism.When the electromagnet mechanism is powered, the electromagnet machine
Structure drives the clutch output wheel close in the axial direction with the castle wheel piece and engages, so that the driving force is transferred to
The output rack gear, to open or close the drawer；When electromagnet mechanism power-off, the resetting-mechanism drives institute
It states clutch output wheel and is axially away from and disengages with the castle wheel piece, so that the driving force is not passed to the output gear
Item, to stop opening or closing the drawer.
Automatic switch drawer mechanism according to the present utility model, optionally, the castle wheel piece include in axial direction convex
Multiple first protrusions out, the space between every two adjacent first protrusion limit the first recessed portion；The clutch is defeated
Wheel includes multiple second protrusions in axial direction protruding out, and the space between every two adjacent second protrusion limits the
Two recessed portions；Wherein, when the castle wheel piece is engaged with the clutch output wheel, each second protrusion is extended to accordingly
First recessed portion, and against corresponding first protrusion.
Further, each of the multiple first protrusion and the multiple second protrusion protrusion all have two
A side cambered surface, described two side cambered surfaces obliquely and close to each other extend relative to the axial direction, so that each is convex
The section of portion in a circumferential direction is isosceles trapezoid out.
Further, the multiple first protrusion and the multiple second protrusion are dimensioned to when the clutch
When wheel piece is engaged with the clutch output wheel, a side cambered surface of each the second protrusion is bonded corresponding first protrusion completely
The side cambered surface in portion.
Automatic switch drawer mechanism according to the present utility model, optionally, the multiple first protrusion is arranged about
The shaft of the castle wheel piece is equally spacedly distributed in a circumferential direction, also, the multiple second protrusion is arranged to
Simultaneously against corresponding first protrusion.
Further, the quantity of the multiple first protrusion is six, and six first protrusions are about the clutch
There are three symmetry axis for the shaft tool of wheel piece；The quantity of the multiple second protrusion is four, and four second protrusions close
Symmetry axis there are two having in the shaft of clutch output wheel.
Further, the quantity of first protrusion is no less than 2, and first protrusion is about the castle wheel piece
Shaft have symmetry；The quantity of second protrusion is no less than 2, and second protrusion is defeated about the clutch
The shaft taken turns out has symmetry.
Further, the quantity of first protrusion is no less than 2, and first protrusion is about the castle wheel piece
Shaft do not have symmetry；The quantity of second protrusion is no less than 2, and second protrusion is about the clutch
The shaft of output wheel does not have symmetry.
Further, the quantity of first protrusion and the quantity of second protrusion are equal.According to the utility model
Automatic switch drawer mechanism, optionally, the electromagnet mechanism includes clutch electromagnetic body and iron core；When energization, the clutch
Electromagnet is that the iron core applies an electromagnetic driving force, and to drive the iron core mobile, the iron core drives the clutch defeated
Wheel is engaged with the castle wheel piece out；When power-off, electromagnetic driving force is eliminated, and allows the clutch output wheel and the castle wheel piece
It disengages.
Automatic switch drawer mechanism according to the present utility model, optionally, the resetting-mechanism includes spiral helicine spring,
The spring and the clutch output wheel and the castle wheel piece are coaxially disposed between；When energization, the clutch is defeated
It takes turns out close to each other with the castle wheel piece and compresses the spring and deform；When power-off, compressed spring-return deformation,
And drive the clutch output wheel and the castle wheel piece disconnected from each other.
Automatic switch drawer mechanism according to the present utility model, optionally, the power input unit further includes worm screw and snail
Wheel, the motor is rotated via worm gear described in the worm drive, with output driving power.
Automatic switch drawer mechanism according to the present utility model, optionally, the clutch tooth train further includes two-way skidding
Mechanism is arranged between the worm gear and the castle wheel piece；The two-way sliding mechanism includes skidding axis tooth and the wheel that skids
Piece when normal operation, the skidding axis tooth and described plays pulley sheet engagement；When by external impacts, the skidding axis tooth and institute
It states and plays pulley sheet disengaging and skid.
Further, the skidding axis tooth outer wall is equipped with multiple elastic cantilevers, and the end of each elastic cantilever is equipped with axial symmetry
The protrusion of structure, also, the spline beaten pulley sheet inner wall and be equipped with the axially symmetric structure cooperated with the convex shape；Just
Often when operation, the protrusion and the spline engagement, to transmit rotational power；When external impacts, the skidding axis tooth and described
It beats moment strong relative rotation power between pulley sheet and forces the inside elastic shrinkage of the elastic cantilever, so that the protrusion and the flower
Key is detached from, to interrupt power transmitting.
Automatic switch drawer mechanism according to the present utility model, optionally, the rotation of the clutch output wheel is via at least
One output transition wheel transmits output rotation axis, and the output gear is then driven to rotate, and the output gear driving is described defeated
Rack gear is mobile out.
Another aspect according to the present utility model proposes a kind of refrigerator comprising according to automatic switch described above
Drawer mechanism.
The automatic switch drawer mechanism of the utility model can realize the drawer for automatically and/or manually opening and closing refrigerator
Function significantly increases the operability of refrigerator.Particularly, the utility model realizes clutch function, the electricity using electromagnetic clutch mechanism
The advantage of magnetic clutch at least that:
The engaging structure of castle wheel piece and clutch output wheel uses the lug boss of trapezoidal sectional shape, and side edge has
Chamfering, top rest surface is smaller, can effectively prevent that dieback occurs when engagement, engagement incision is easily reliable.Moreover, lug boss it
Between contact surface be inclined-plane, facilitate apart from one another, can effectively prevent occurring stuck when disengaging, therefore, this engaging structure can
Ensure reliably to engage and disengage；
Power input is carried out using direct current generator, as a result, in engagement action, castle wheel can be made by reducing voltage
Piece slowly rotates, at this point, after clutch magnet obtains electric, the clutch output wheel of stationary state can be with the castle wheel that slowly rotates
Piece realizes steady engagement；
When castle wheel piece is bonded completely with the engaging structure of clutch output wheel, engagement contact area is maximum, reduces engagement
The stress in face is concentrated, and is improved stress distribution, is mitigated the abrasion of engaging structure, improve the durability of electromagnetic clutch mechanism；
Using the external impacts (such as artificial pulling by force) during two-way sliding mechanism reply automatic running, energy
Protect the inner components such as motor against damages, the service life of elongated component, to have good safety and reliability.
It is hereafter described in detail in conjunction with the accompanying drawings for realizing the one of the utility model as defined in the appended claims
A little optimal modes and embodiment are therefrom readily appreciated that the features described above and advantage and other feature and advantage of the utility model.
Detailed description of the invention
Fig. 1 shows the perspective view of the automatic switch drawer mechanism of embodiment according to the present utility model；
Fig. 2 is the perspective view of the power input unit in the automatic switch drawer mechanism of Fig. 1；
Fig. 3 is the perspective view of the clutch tooth train in the automatic switch drawer mechanism of Fig. 1；
Fig. 4 is the perspective view of the output gear train in the automatic switch drawer mechanism of Fig. 1；
Fig. 5 is the perspective view of the decomposing state of clutch tooth train；
Fig. 6 is the cross-sectional view of the assembled state of clutch tooth train；
The perspectives and plans of the castle wheel piece of clutch tooth train are shown respectively in Fig. 7 A-B；
The perspectives and plans of the clutch output wheel of clutch tooth train are shown respectively in Fig. 8 A-B；
Castle wheel piece is shown respectively in Fig. 9 A-B and clutch output wheel is in disengaged condition (Fig. 9 A) and meshing state (Fig. 9 B)
Side view；
Figure 10 A-E is the perspectives and plans according to the sliding mechanism of the utility model embodiment；And
Figure 11 A-F is the perspectives and plans of sliding mechanism according to prior art.
Appended drawing reference
10 power input units
11 motors
12 worm screws
13 worm gears
20 clutch tooth trains
21 sliding mechanisms
211 dozens of pulley sheets
212 skidding axis teeth
22 electromagnetic clutch mechanisms
221 shafts
222 castle wheel pieces
The first protrusion of 222A
The first recessed portion of 222B
222C annular pillar
222D first through hole
223 clutch output wheels
The second protrusion of 223A
The second recessed portion of 223B
223C annular groove
The second through-hole of 223D
223E boss
224 clutch magnets
225 iron cores
226 springs
30 output gear trains
31 output transition wheels
32 output shafts
33 output gears
34 output rack gears
Specific embodiment
Description describes the exemplary embodiment of the utility model.In the accompanying drawings, identical appended drawing reference indicates phase
Same or corresponding part.By description, the feature and advantage of the utility model more show.As an example, described below
It is automatically switched the drawer structure that drawer mechanism is applied to refrigerator.However, term " drawer ", which can mean any, to be automatically switched
Drawer, such as refrigerator-freezer, magazine etc. drawer.
Fig. 1 shows the overall perspective view of automatic switch drawer mechanism accoding to exemplary embodiment, including power input
Portion 10, clutch tooth train 20 and output gear train 30.In addition, the mechanism can also include the various portions for positioning and supporting
Part, such as shell, but the design of the utility model for a clear description, other components not shown in figures.It is being automatically switched
In drawer mechanism, power input unit 10 is used for output driving power, and is selectively communicated to output gear via clutch tooth train 20
Train 30, to drive the drawer structure of end to translate, to realize the movement for being automatically turned on drawer or closing drawer.With
In lower description, term " upstream ", " ... before " etc. it is opposite closer to the orientation of power input unit 10 for describing, term " under
Trip ", " ... later " etc. it is opposite closer to the orientation of output gear train 30 for describing.
Power input unit 10 is to be automatically switched the driving force of drawer mechanism input rotation formula.As shown in Fig. 2, power inputs
Portion 10 includes motor 11, worm screw 12 and worm gear 13.Motor 11 can rotate under the control of individual control circuit (not shown)
Or it stalls, forward or reverse.The output shaft of motor 11 is attached to worm screw 12, and rotation is transferred to worm gear 13 by worm screw 12.Worm gear 13
Pivot center it is vertical with the pivot center of worm screw 12 (i.e. 11 output shaft of motor), as a result, motor 11 can with flatwise layout, with
It is located at its short transverse in the principal plane of switch drawer mechanism, so as to reduce the occupancy body of automatic switch drawer mechanism
Product.Motor 11 can use a variety of motor forms and specification.For example, motor 11 can be direct current generator, so as to pass through control
Driving voltage processed controls the rotation of motor.The power input unit 10 of the utility model is not limited to embodiment as shown in the figure, also
The mechanism of rotate driving power can be exported using other.
Clutch tooth train 20 is operable to whether its own is powered and will selectively input from upstream power
The power in portion 10 is transferred to the output gear train 30 in downstream.As shown in figure 3, clutch tooth train 20 includes sliding mechanism 21 and electromagnetism
Clutch 22.Sliding mechanism 21 can be split type two-way sliding mechanism comprising pulley sheet 211 and skidding axis tooth 212 are beaten,
Under normal operating conditions, the rotational power of upstream is transferred to the electromagnetic clutch mechanism 22 in downstream by sliding mechanism 21；And by
It skids when to external impacts from downstream, the motor 11 of upstream is transferred to avoid external force, to protect motor.It is two-way
The specific design of sliding mechanism will specifically describe below.Electromagnetic clutch mechanism 22 includes castle wheel piece 222 and clutch output wheel
223, castle wheel piece 222 is engaged with skidding axis tooth 212 always, to receive rotational power.When electromagnetic clutch mechanism 22 is powered,
Castle wheel piece 222 and clutch output wheel 223 engage, so that rotational power to be transferred to the output gear train 30 in downstream；And in electricity
When magnetic clutch 22 powers off, castle wheel piece 222 and clutch output wheel 223 are disconnected from each other, to disconnect rotational power to downstream
The transmitting of output gear train 30.Electromagnetic clutch mechanism 22 used by the utility model will specifically describe below.
Output gear train 30 is operable as that drawer knot to be driven will be transferred to from the power of upstream clutch tooth train 20
Structure.As shown in figure 4, output gear train 30 may include the electromagnetic clutch mechanism 22 for being engaged to upstream by output transition wheel 31
Clutch output wheel 223 to receive rotational power, and be passed to the output shaft 32 in downstream.Different number and rule can be selected
The transition wheel of lattice is required with meeting the different of arrangement, driving speed and driving force size etc..Output shaft 32 can band
Dynamic output gear 33 rotates.Output gear 33 is engaged with output rack gear 34, moreover, the drawer structure of output rack gear 34 and refrigerator
It is wholely set.Depend on whether electromagnetic clutch mechanism 22 is excited as a result, output gear 33 is selectively driven or stops taking out
The auto-translating of drawer；Forward or reverse depending on motor 11, output gear 33 is selectively driven drawer and opens or close, from
And realize the drawer switch function of automation.
The electromagnetic clutch mechanism 22 in the utility model is described in detail below with reference to Fig. 5 to Fig. 9.Fig. 5 and Fig. 6 show respectively
The decomposition view and assembled view of electromagnetic clutch mechanism 22 out.As shown, electromagnetic clutch mechanism 22 may include shaft 221, from
Close wheel piece 222, clutch output wheel 223, clutch magnet 224, iron core 225 and spring 226.Shaft 221 passes through castle wheel piece
The second through-hole 223D at 223 center first through hole 222D and clutch output wheel at 222 centers, so that castle wheel piece 222 and clutch
Output wheel 223 can rotate coaxially.Spring 226 is positioned between clutch output wheel 223 and castle wheel piece 222.Clutch output wheel
223 and castle wheel piece 222 on can be equipped with limit component for limiting spring, for example, one end of spring 226 can be nested in clutch
It takes turns on the annular pillar 222C on piece 222, and the other end can be nested in the annular recess 223C of clutch output wheel 223, by
This, spring 226 can be stablized between holding and clutch output wheel 223 and castle wheel piece 222.Further, it is also possible to not shown using other
The form of limit component out, for example, annular pillar may be provided on clutch output wheel, annular groove 223C may be provided at clutch
Take turns on piece.When electromagnet is unexcited, it is specific that the elastic force of spring 226 causes castle wheel 223 and castle wheel piece 222 to separate one
Distance, so that clutch output wheel 223 and castle wheel piece 222 are disconnected from each other, the two can be rotated independently from each other.
As shown in fig. 6, upper surface (one side for deviating from castle wheel piece 222) contact iron core 225 of clutch output wheel 223
Lower end surface, iron core 225 pass through clutch magnet 224 in.When clutch magnet 224 be powered when, for iron core 225 apply one to
Under electromagnetic driving force, so that iron core 225 be driven to move down, so that clutch output wheel 223 be pushed to move towards castle wheel piece 222
It is dynamic, while overcoming the spring force of spring 226, so that the spacing between castle wheel piece 222 and clutch output wheel 223 be caused gradually to become
It is small until both engagement.Further, under lasting energized state, clutch magnet 224 is steadily in excitation state, so as to
To provide stable engagement force for both castle wheel piece 222 and clutch output wheel 223, passed to provide continuous, stable power
It passs.When clutch magnet 224 powers off, the electromagnetic driving force being applied on iron core 225 is eliminated, at this point, the spring force of spring 226
It is mobile far from castle wheel piece 222 upward that clutch output wheel 223 can be driven, so that the two be made to return back to state disconnected from each other.
In addition, buffer unit can be set between iron core 225 and clutch output wheel 223, such as spring or cushion, to reduce iron
Impact force between core 225 and clutch output wheel 223, so that the engagement between castle wheel piece 222 and clutch output wheel 223
Or disengaging movement is more steady.
As shown, iron core 225 has cylinder, it is located in the centre bore of the clutch magnet 224 of hexahedron, and
On the boss 223E for bearing against 223 upside of clutch output wheel.But the utility model is not limited to that, in other embodiments,
The arrangement of different types of clutch magnet 224 and iron core 225 can be used in those skilled in the art, only in iron core 225
Clutch output wheel 223 can be driven mobile under the action of electromagnet.
Clutch wheel disc 222 and 223 the two of clutch output wheel are equipped with the nested type engaging structure that can be engaged with each other, to reality
It is now detached from and engages.As shown in figs. 7 a-b, there is first centered on shaft, peripherally disposed on castle wheel piece 222
Protrusion 222A and the first recessed portion 222B.The upper surface of first protrusion 222A from castle wheel piece 222 is protruding upward,
The fan ring-shaped for being projected as occupying certain angle on the upper surface, with intrados, extrados and two side cambered surfaces.Its
In, for each first protrusion 222A, intrados and outer arc are vertical upwardly to be extended, and two side cambered surfaces are upwards obliquely
And extend close to each other, also, plane can be formed on the top of the first protrusion 222A.For example, the first protrusion 222A has
Trapezoidal cross section, moreover, two side cambered surfaces of the first protrusion 222A form chamfering in a circumferential direction, this chamfering helps
Engagement and disengaging smooth progress.As shown, clutch wheel disc 222 includes multiple separate first protrusion 222A, it is each
From occupying identical fan ring angle, and it is centrosymmetric about shaft.At this point, between two adjacent the first protrusion 222A
Space limit the first recessed portion 222B.In the illustrated embodiment, there are six the first protrusion 222A and six for the tool of castle wheel piece 222
A first recessed portion 222B, symmetrical about spindle central, i.e., there are three symmetry axis for tool.In other embodiments, first is convex
The quantity of portion 222A and the first recessed portion 222B can be different out, e.g. two, three, four etc. any matched combineds.
As shown in Fig. 8 A-B, there is the second protrusion 223A and the second recessed portion 223B, second is convex on clutch output wheel 223
The shape and size of portion 223A and the second recessed portion 223B are identical as aforementioned first protrusion 222A and the first recessed portion 222B out,
So as to be engaged with each other.In an embodiment (not shown), clutch output wheel 223 equally has about spindle central symmetrical six
A second protrusion 223A and six the second recessed portion 223B.Additionally optionally, be only arranged among four of six positions from
The second protrusion 223A is closed, as shown in Figure 8 B, four the second protrusion 223A every two are located adjacent one another.Furthermore, it is possible to using with
The second different protrusion 223A set-up mode of diagramatic way, as long as it can be with the first protrusion 222A on castle wheel piece 222
Engagement.
Fig. 9 A shows clutch wheel disc 222 and clutch output wheel 223 is in the position being disengaged from each other.In the elastic force of spring 226
Under effect, the top of the second protrusion 223A of the top surface and clutch output wheel 223 of the first protrusion 222A of clutch wheel disc 222
Portion face is separated from each other a distance, and clutch wheel disc 222 and clutch output wheel 223 can uninterruptedly each autorotations each other as a result,.
After electromagnet is powered, clutch output wheel 223 is moved down along shown by arrow.Under the drive of the motor with clutch wheel disc 222
It is rotated relative to clutch output wheel 223, when the angle of the two is suitble to, the two engages each other.During this period, since first is convex
Portion 222A and the second protrusion 223A has trapezoid cross section out, and the two top contact area is small, thus help smoothly to engage,
Avoid because two protrusions each other dieback and engage failure.
Fig. 9 B shows clutch wheel disc 222 and clutch output wheel 223 is in the position being engaged with each other.In the effect of electromagnetic force
Under, clutch wheel disc 222 and clutch output wheel 223 are close to each other.In the illustrated embodiment, the first protrusion of castle wheel piece 222
222A is extended within the corresponding second recessed portion 223B of clutch output wheel 223, and correspondingly, the second of castle wheel piece 222 is recessed
Second protrusion 223A of concave portion 223B reception clutch output wheel 223.Here, protrusion volume is less than corresponding recessed portion
Volume, so that the insertion of protrusion is easier to realize.In addition, the side cambered surface of the first protrusion 222A of castle wheel piece 222 is supported
By the side cambered surface of the second protrusion 223A of clutch output wheel 223, so as to realize the transmitting of torque.Preferably, first is convex
The side cambered surface of portion 222A can fully be bonded the side cambered surface of corresponding second protrusion 223A out, i.e. the two height and the width size
It is all the same, maximum contact area first can be realized as a result, concentrated the stress in contact surface and minimized；Second may be used
The field of load for realizing depth capacity, makes the top of protrusion from excessive load --- thus, it is possible to extend engaging structure
Service life.After electromagnet power-off, under the return action of spring 226, clutch output wheel 223 is along shown by arrow to moving up
It is dynamic, cause clutch output wheel 223 and castle wheel piece 222 to be disengaged from each other, returns back to position shown in Fig. 9 A.During this period, due to
First protrusion 222A and the first recessed portion 222B has trapezoid cross section, and the first protrusion 222A and the second protrusion 223A are with oblique
Face contact, therefore, under the drive of the motor, the first protrusion 222A of castle wheel piece 222 can push the of clutch output wheel 223
Two protrusion 223A are separate, to assist realizing reliable disengaging, avoid that spring is answered to block and be detached from failure.
Sliding mechanism 21 used by the utility model are described below with reference to Figure 10 to Figure 11.Sliding mechanism 21 both can be with
Power transmission is realized, it may also be ensured that protecting motor 11 to exempt from damage when by external impacts.As shown in figure 11, this is practical new
Sliding mechanism 21 used by type is by skidding axis tooth 212 and beats pulley sheet 211 and forms, and skidding axis tooth 212 is equipped with multiple elasticity
Cantilever, cantilever end are equipped with bulge-structure, which is suitable for engaging with the splined section beaten on 211 inner wall of pulley sheet.Just
Often when operation, skidding axis tooth 212 is in meshing state with pulley sheet 211 is beaten, and the two is opposite to be remain stationary.When mechanism by
It when impact force, skidding axis tooth 212 and beats rotatory force between pulley sheet 211 and instantaneously increases, because of cantilever protrusion and wheel piece inner wall spline
Guiding role, force the inside elastic shrinkage of cantilever, meshing state is broken, and skidding axis tooth 212 and beating between pulley sheet 211 is sent out
Raw relative rotary motion.When external force disappears, cantilever is sprung back under elastic-restoring force, and end bosses structure still and beats pulley sheet
The spline engagement of 211 inner walls.
Figure 11 A-F shows the unidirectional sliding mechanism of the prior art.The bulge-structure two of cantilever design outer end on pawl
The chamfering on side is inconsistent, so that unidirectional skidding function can only be realized.As shown in fig. 11f, 1 > of skidding angle [alpha], 45 ° of > α of pawl
2, skidding angle [alpha] 1 ' >, 45 ° of > α 2 ' on corresponding ratchet, due to mutually matched relationship, 1 ' angle of α 1 and α matches, excellent
It is equal to be selected as angle；Same 2 ' angle of α 2 and α matches, and preferably angle is equal.When electrical power, output transition wheel will revolve
Turning power to be transmitted on pawl, pawl is in ratchet when clockwise movement, since α 2 is relatively small, same relatively small, the pawl of α 2 '
Skidding power between ratchet is greater than torsion, and the two energy synchronous rotary transmits power；When motor counter motion, pawl is in ratchet
When counterclockwise movement, since α 1 is relatively large, α 1 ' is same relatively large, and the skidding power between ratchet and pawl is less than torsion, and two
Person generates skidding, loses the function of motor reversal transmitting power.
Different from the unidirectional sliding mechanism of the prior art, sliding mechanism used by the utility model can realize two-way beat
It is sliding.When motor provides power forward or reverse, skidding axis tooth upper cantilever convex portion angle beta 1, the angle beta of the single slot of spline
2, to guarantee sliding mechanism, skidding power is consistent forward or reverse, two angle central symmetries.In the case that other conditions are constant, β 1 is big
In β 2, skidding power is smaller, can be used in the product that torque demand is small when product normal use；β 1 is less than β 2, and skidding power is larger, can
When for product normal use in the big product of torque demand.This sliding mechanism structure is simple, it is only necessary to by adjusting β 1 and β
The matching relationship of 2 angles, in the product component that just can be suitably used for various torque requirements.It can be in power using two-way sliding mechanism
Input unit forward or reverse when protection to motor can be achieved, and two-way slipping torque is identical.More traditional sliding mechanism, this reality
It is strong with the pawl contractility of novel sliding mechanism, reset positioning reliably, slipping torque is stablized, using symmetric design structure letter
It is single, while also greatly reducing Mold Making difficulty.
Referring again to attached drawing 1, the automatic switch drawer mechanism of the utility model is described.In the energized state, motor 11 is being just
To or rotate backward to export rotational power, and power is transferred to the sliding mechanism 21 of clutch tooth train 20, then via skidding
Power is transferred to the castle wheel piece 222 of electromagnetic clutch mechanism 22 by mechanism 21, rotates castle wheel piece 222.When external power supply is
When electromagnetic clutch mechanism 22 is powered, iron core 225 is attracted downwards under the action of clutch magnet 224, so that clutch output wheel
223 overcome the elastic force of spring 226 with compressed spring 226 under the action of electromagnetic force, also, clutch output wheel 223 and clutch
The wheel engagement of piece 222 is integrated.Power is transferred to clutch output wheel 223 by castle wheel piece 222 as a result, makes clutch output wheel 223 can
To drive output transition wheel 31, output transition wheel 31 transfers the motion to output shaft 32, to drive output gear 33, and by defeated
Gear 33 realizes that the straight-line displacement to output rack gear 34 drives out.Meanwhile output rack gear may be implemented in the positive and negative rotation of motor 11
34 anterior-posterior translation, and export rack gear 34 and the drawer being integrally formed therewith is driven to do straight reciprocating motion, to realize control drawer
It automatically turns on or closes.When the independent power loss of clutch magnet 224 or mechanism entirety power loss, clutch magnet 224 is to iron core 225
Driving force disappear, clutch output wheel 223 resets under spring force, and clutch output wheel 223 divides with castle wheel piece 222
From, cause refrigerator drawer stop automatically turn on or closing function.At this time, it can be achieved that manually opened or closing refrigerator drawer.
The automatic switch drawer mechanism of the utility model can realize the drawer for automatically and/or manually opening and closing refrigerator
Function significantly increases the operability of refrigerator.Particularly, the utility model realizes clutch function, the electricity using electromagnetic clutch mechanism
The advantage of magnetic clutch at least that:
The engaging structure of castle wheel piece and clutch output wheel uses the lug boss of trapezoidal sectional shape, and side edge has
The rest surface of chamfering, top is smaller, can effectively prevent that dieback occurs when engagement, engagement incision is easily reliable.Moreover, lug boss
Between contact surface be inclined-plane, facilitate it is apart from one another, can effectively prevent disengage when occur it is stuck, therefore, this engaging structure
It can ensure that reliable engagement and disengage；
Power input is carried out using direct current generator, as a result, in engagement action, castle wheel can be made by reducing voltage
Piece slowly rotates, at this point, after clutch magnet obtains electric, the clutch output wheel of stationary state can be with the castle wheel that slowly rotates
Piece realizes steady engagement；
When castle wheel piece is bonded completely with the engaging structure of clutch output wheel, engagement contact area is maximum, reduces engagement
The stress in face is concentrated, and is improved stress distribution, is mitigated the abrasion of engaging structure, improve the durability of electromagnetic clutch mechanism；
Using the external impacts (such as artificial pulling by force) during two-way sliding mechanism reply automatic running, energy
Protect the inner components such as motor against damages, the service life of elongated component, to have good safety and reliability.
In addition, the displacement of the straight reciprocating motion of output rack gear can be carried out by position sensor (such as Hall element)
Monitoring.When drawer is opened to desired locations, position sensor transmits signal to master control borad, supplies via master control borad cutting motor
Electricity, drawer positions are in hold mode.When needing drawer to reset closing, operation master control borad can driving motor reverse rotation realization
Drawer, which resets, closes, and realizes that drawer closing is tight by the position sensor of reset close side monitoring position.
Multiple sensors have can be set in automatic switch drawer mechanism, detect drawer open or closed position and electricity respectively
The revolving speed of machine.Work as electrical power, drawer is in normally-open or closing process, if it is artificial intervene manually pull open by force or
When closing drawer, in external force back transfer to sliding mechanism, skidding axis tooth and wheel sector-meeting of skidding are skidded, and guarantee that external force will not
It is transmitted to power input unit, motor can be protected.If sliding mechanism fails, motor is increased by external force stall, electric current,
After current of electric secure setting set by automatically controlled mainboard, power supply is automatically cut off.At this point it is possible to manually to refrigerator drawer
It is opened and closed.In addition, the utility model can also make mechanism be again introduced into what early period did not completed after intervening external force and removing
Automatic operating state fully opens or closed position, power input unit just stop working until refrigerator drawer is in.
Most preferred embodiment and some other embodiment for realizing the utility model are described in detail above, but answers
Understand, the effect of these embodiments is only that citing, and do not lie in limit in any way the scope of the utility model, it is applicable or
Construction.The protection scope of the utility model is limited by appended claims and its equivalent way.Those skilled in the art can be
Many changes are made to foregoing embodiments under the introduction of the utility model, these changes each fall within the protection model of the utility model
It encloses.
Claims (16)
1. a kind of automatic switch drawer mechanism, which is characterized in that the mechanism includes:
Power input unit (10), including motor (11), for exporting rotate driving power；
Output gear train (30), including output rack gear (34), are securely attached to drawer；
Clutch tooth train (20), including electromagnetic clutch mechanism (22) comprising:
Castle wheel piece (222) is suitable for being rotated by the motor (11)；
Clutch output wheel (223) is coaxially disposed with the castle wheel piece (222), and is suitable for driving the output rack gear (34)
It is mobile；
And electromagnet mechanism and resetting-mechanism；
When the electromagnet mechanism is powered, the electromagnet mechanism drives the clutch output wheel (223) and the castle wheel
Piece (222) is close in the axial direction and engages so that the driving force is transferred to the output rack gear (34), thus open or
Close the drawer；
When electromagnet mechanism power-off, the resetting-mechanism drives the clutch output wheel (223) and the castle wheel piece
(222) separate in the axial direction and disengage, so that the driving force is not passed to the output rack gear (34), to stop beating
The drawer is closed on or off.
2. automatic switch drawer mechanism according to claim 1, which is characterized in that
The castle wheel piece (222) includes multiple first protrusions (222A) in axial direction protruded, and every two adjacent
Space between one protrusion limits the first recessed portion (222B)；
The clutch output wheel (223) includes multiple second protrusions (223A) in axial direction protruded, every two adjacent
Space between second protrusion limits the second recessed portion (223B)；
Wherein, when the castle wheel piece (222) is engaged with the clutch output wheel (223), each second protrusion (223A)
It extends in corresponding first recessed portion (222B), and against corresponding first protrusion (222A).
3. automatic switch drawer mechanism according to claim 2, which is characterized in that
Each of the multiple first protrusion (222A) and the multiple second protrusion (223A) protrusion all have
Two side cambered surfaces, described two side cambered surfaces obliquely and close to each other extend relative to the axial direction, so that each
The section of protrusion in a circumferential direction is trapezoidal.
4. automatic switch drawer mechanism according to claim 3, which is characterized in that
The multiple first protrusion (222A) and the multiple second protrusion (223A's) is dimensioned to, when it is described from
When conjunction wheel piece (222) is engaged with the clutch output wheel (223), a side cambered surface of each the second protrusion (223A) is complete
It is bonded the side cambered surface of corresponding first protrusion (222A).
5. the automatic switch drawer mechanism according to any one of claim 2~4, which is characterized in that
Between the shaft that the multiple first protrusion (222A) is arranged about the castle wheel piece (222) waits in a circumferential direction
It is distributed away from ground, also, the multiple second protrusion (223A) is arranged to simultaneously against corresponding first protrusion
(222A)。
6. automatic switch drawer mechanism according to claim 5, which is characterized in that
The quantity of the multiple first protrusion (222A) is six, and six first protrusions (222A) are about the clutch
There are three symmetry axis for the shaft tool of wheel piece (222)；
The quantity of the multiple second protrusion (223A) is four, and four second protrusions (223A) are about the clutch
There are two symmetry axis for the shaft tool of output wheel (223).
7. automatic switch drawer mechanism according to claim 5, which is characterized in that
The quantity of first protrusion (222A) is no less than 2, and first protrusion (222A) is about the castle wheel
The shaft of piece (222) has symmetry；
The quantity of second protrusion (223A) is no less than 2, and second protrusion (223A) is defeated about the clutch
The shaft for taking turns (223) out has symmetry.
8. automatic switch drawer mechanism according to claim 5, which is characterized in that
The quantity of first protrusion (222A) is no less than 2, and first protrusion (222A) is about the castle wheel
The shaft of piece (222) does not have symmetry；
The quantity of second protrusion (223A) is no less than 2, and second protrusion (223A) is defeated about the clutch
The shaft for taking turns (223) out does not have symmetry.
9. automatic switch drawer mechanism according to claim 5, which is characterized in that the number of first protrusion (222A)
It measures equal with the quantity of second protrusion (223A).
10. automatic switch drawer mechanism according to claim 1, which is characterized in that
The electromagnet mechanism includes clutch electromagnetic body (224) and iron core (225)；
When energization, the clutch electromagnetic body (224) is that the iron core (225) apply an electromagnetic driving force, to drive the iron
Core (225) is mobile, and it is mobile that the iron core (225) pushes the clutch output wheel (223), and nibbles with the castle wheel piece (222)
It closes；
When power-off, the electromagnetic driving force is eliminated, and the clutch output wheel (223) and the castle wheel piece (222) is allowed to disengage.
11. automatic switch drawer mechanism according to claim 1, which is characterized in that
The resetting-mechanism includes spiral helicine spring (226), the spring (226) and the clutch output wheel (223) and institute
Castle wheel piece (222) is stated to be coaxially disposed between；
When energization, the clutch output wheel (223) is close to each other with the castle wheel piece (222) and compresses the spring (226)
Flexible deformation occurs；
When power-off, compressed spring (226) replys deformation, and drives the clutch output wheel (223) and the castle wheel piece
(222) disconnected from each other.
12. automatic switch drawer mechanism according to claim 1, which is characterized in that
The motor (11) is direct current generator, and the power input unit (10) further includes worm screw (12) and worm gear (13), institute
It states motor (11) and drives the worm gear (13) to rotate via the worm screw (12), with output driving power.
13. automatic switch drawer mechanism according to claim 12, which is characterized in that
The clutch tooth train (20) further includes two-way sliding mechanism (21), is arranged in the worm gear (13) and the castle wheel
Between piece (222)；
The two-way sliding mechanism (21) includes skidding axis tooth (212) and beats pulley sheet (211), when normal operation, the skidding
Axis tooth (212) and described beat pulley sheet (211) are engaged；When by external impacts, the skidding axis tooth (212) and skidding wheel
Piece (211) is detached from and skids.
14. automatic switch drawer mechanism according to claim 13, which is characterized in that
Skidding axis tooth (212) outer wall is equipped with multiple elastic cantilevers, and the end of each elastic cantilever is equipped with the convex of symmetrical structure
It rises, also, the spline beaten pulley sheet (211) inner wall and be equipped with the symmetrical structure cooperated with the convex shape；
When operating normally, the protrusion and the spline engagement, to transmit rotational power；
When by external impacts, the skidding axis tooth (212) and described beat moment strong relative rotation power between pulley sheet (211) and force
The inside elastic shrinkage of elastic cantilever, so that the protrusion is detached from the spline, to interrupt power transmitting.
15. automatic switch drawer mechanism according to claim 1, which is characterized in that
The rotation of the clutch output wheel (223) is transferred to output rotation axis (32) via at least one output transition wheel (31),
Then the output gear (33) are driven to rotate, the output gear (33) drives the output rack gear (34) mobile.
16. a kind of refrigerator, which is characterized in that including the automatic switch drawer according to any one of preceding claims 1-15
Mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525162.2U CN208550527U (en) | 2017-11-15 | 2017-11-15 | A kind of automatic switch drawer mechanism and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525162.2U CN208550527U (en) | 2017-11-15 | 2017-11-15 | A kind of automatic switch drawer mechanism and refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN208550527U true CN208550527U (en) | 2019-03-01 |
Family
ID=65445635
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721525162.2U Active CN208550527U (en) | 2017-11-15 | 2017-11-15 | A kind of automatic switch drawer mechanism and refrigerator |
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| Country | Link |
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| CN (1) | CN208550527U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111166079A (en) * | 2019-12-25 | 2020-05-19 | 裕克施乐塑料制品（太仓）有限公司 | Automatic device that opens and shuts of convenient type cabinet door |
| CN111721055A (en) * | 2019-03-21 | 2020-09-29 | 合肥华凌股份有限公司 | Door body assembly, control method thereof, refrigeration equipment and readable storage medium |
| CN111821495A (en) * | 2019-04-19 | 2020-10-27 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN111820642A (en) * | 2019-04-19 | 2020-10-27 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN113375947A (en) * | 2021-06-04 | 2021-09-10 | 浙江佳骏汽车零部件有限公司 | Detection device for automobile brake production |
| WO2021190126A1 (en) * | 2020-03-27 | 2021-09-30 | 青岛海尔电冰箱有限公司 | Automatic door opening and closing device and refrigerator |
| WO2023060982A1 (en) * | 2021-10-12 | 2023-04-20 | 珠海格力电器股份有限公司 | Automatic door opening and closing mechanism, and refrigerator |
| WO2024032621A1 (en) * | 2022-08-09 | 2024-02-15 | 青岛海尔电冰箱有限公司 | Refrigerator |
| WO2024032619A1 (en) * | 2022-08-09 | 2024-02-15 | 青岛海尔电冰箱有限公司 | Refrigerator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721055A (en) * | 2019-03-21 | 2020-09-29 | 合肥华凌股份有限公司 | Door body assembly, control method thereof, refrigeration equipment and readable storage medium |
| CN111721055B (en) * | 2019-03-21 | 2022-02-11 | 合肥华凌股份有限公司 | Door body assembly, control method thereof, refrigeration equipment and readable storage medium |
| CN111821495A (en) * | 2019-04-19 | 2020-10-27 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN111820642A (en) * | 2019-04-19 | 2020-10-27 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN111821495B (en) * | 2019-04-19 | 2021-07-23 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN111820642B (en) * | 2019-04-19 | 2022-03-18 | 宁波方太厨具有限公司 | Drawer structure and sterilizer |
| CN111166079A (en) * | 2019-12-25 | 2020-05-19 | 裕克施乐塑料制品（太仓）有限公司 | Automatic device that opens and shuts of convenient type cabinet door |
| WO2021190126A1 (en) * | 2020-03-27 | 2021-09-30 | 青岛海尔电冰箱有限公司 | Automatic door opening and closing device and refrigerator |
| CN113375947A (en) * | 2021-06-04 | 2021-09-10 | 浙江佳骏汽车零部件有限公司 | Detection device for automobile brake production |
| WO2023060982A1 (en) * | 2021-10-12 | 2023-04-20 | 珠海格力电器股份有限公司 | Automatic door opening and closing mechanism, and refrigerator |
| WO2024032621A1 (en) * | 2022-08-09 | 2024-02-15 | 青岛海尔电冰箱有限公司 | Refrigerator |
| WO2024032619A1 (en) * | 2022-08-09 | 2024-02-15 | 青岛海尔电冰箱有限公司 | Refrigerator |
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