CN101240970A - Refrigerator - Google Patents

Abstract

The present invention provides a refrigerator. The drawer gate of the freezing chamber or the vegetable chamber is electrically opened, and automatically closed when detecting in a semi-opening state, and detecting the interlining or conflict of the goods when the door is opened or closed, and processing coping. When the freezing chamber is opened from the closing state, the connecting plate is pulled by a first driving pin, and output a larger power in a lower speed, then the connecting plate is pulled by a second driving pin, output a medium power in the medium speed, and processing driving, further, a distant third driving pin pulls the connecting plate, the power is small but driving in a high speed, the opening action of the freezing chamber is credibly processed. When the freezing chamber is in the semi-opening state, the rotary plate rotates in the reverse direction of the occasion of the opening the freezing chamber to implement power to the connecting plate to close the freezing chamber to close it. In addition, the braking judgment of the rotary plate is processed by the motor current value, turning off the power, improving the safety such as unclipped finger.

Description

Refrigerator

Technical field

The present invention relates to refrigerator.

Background technology

All the time, as a device of opening that makes refrigerator automatically, disclose between the short distance active region that possesses high gear ratio and the length of low gear ratio apart between active region, and be pulled away from when encapsulation produce big power then with high speed opening, structure that overload prevents clutch is set (for example with reference to patent documentation 1: Japanese kokai publication hei 02-157581 communique) on low gear part.

Perhaps disclose following structure: make the push part moving linearly by worm gear and snail bar, release drawer door with this push part and also open automatically, after door finishes to open, then return to and introduce the position (for example with reference to patent documentation 2: TOHKEMY 2001-280827 communique) with back-moving spring.

Perhaps disclose following structure: synchronous band is set in the support frame of support drawer door, and be provided with synchronously with on the automatic unlatching unit that slides, open automatically the unit by the sliding pin of releasing drawer box, make roller that synchronous drive does, the driving mechanism that is used to drive sliding pin and roller constitutes (for example with reference to patent documentation 3: TOHKEMY 2000-220957 communique).

Perhaps disclose following cam gear: be arranged on the deferent segment of the reduction gearing of having used worm gear, utilize spinning movement to the energising of the certain hour of drive motor to make door side-prominent and open and make circular-arc tabular (for example with reference to patent documentation 4: TOHKEMY 2002-257466 communique) to door one with the contact site of closing door from main body.

Perhaps disclose following cam gear: be that drive unit possesses rotation cam freely, and make the cam rotation by means of drive unit by the signal that is used to open switch from door, open the cam gear of door thereby the length-diameter part end face of cam is forwards outstanding, wherein, above-mentioned cam makes and has made up circle and oval shape or elliptical shape (for example with reference to patent documentation 5: TOHKEMY 2001-317864 communique).

Perhaps disclose following structure: possess the motor that on output shaft, has cam at the rear of drawer door, and possess the rotation that utilizes cam and release the microswitch that the frame cam position probing uses (for example with reference to patent documentation 6: Japan is real to open flat 1-167590 communique).

In recent years, great changes will take place for food life, buys the life of the cooking food of every day from concentrating nigh food supply retail shop, and the food storage of all usefulness generalizes in refrigerator to for example once buying in countryside large supermarket etc.In addition, correspondence has increased the situation of the utilization of frozen food, and the large-scale refrigerator that surpasses 400 liters of capacity in the family is generally also universal.

Yet the amount of food of depositing along with the maximization of refrigerator also increases, owing to store for example food more than the 20kg at refrigerating chamber or vegetable compartment, so exist the power of the door of opening vegetable compartment or refrigerating chamber to become big and so on problem.Particularly when door begins to open, except the load of track of opposing drawer, add also to break away from the power that is adsorbed on the magnetic seal spare on the refrigerator main body that the power of opening door becomes heavy especially, so the little people of hand-power for person etc. at advanced age opens refrigerator and has become burden.

In addition, with regard in the refrigerator, if close at closing time the words of not severely punished state in the half-open door of what is called, then produce following problem: cooling gas leakage is lost refrigerator functions to the outside, and the reduction of the electricity charge more piece of cost energy effect, the quality badness of the food that is saved simultaneously has again, the outer extraneous gas of refrigerator enters frosting in the refrigerator, and water droplet is attached in the refrigerator.

Yet the door for refrigerator in order to prevent the leakage of cold air at closing time, is provided with the seal of magnetic adsorption type in complete all scopes of door, absorption around the peristome of magnet and main body when door is closed.And general to constitute be to possess close mechanism, and this close mechanism arrives near the power traction door that utilizes spring etc. after for example being closed to about the remaining 50mm of opening the buttoned-up status when door is closed.

Because this structure, so occasion at the door of opening refrigerator, at the beginning of opening, need to add the tensile force of the attraction of magnetic seal spare, spring that close mechanism had, in addition will comprise door and leave in a storing containers that is wholely set in food accelerate to the speed drawn back for example to the power of the summation of the needed acceleration in the per second 200mm left and right sides at interior whole drawer from halted state, so, particularly in the occasion of store food in large quantities, the power that pulls the door open is the first maximum power.

After about Men Lakai 10mm, because the absorption of magnetic seal spare and main body is pulled away from, so the power that pulls the door open is second power of the summation of the tensile force of the spring that close mechanism had and acceleration that drawer is quickened.If the scope that gives tractive force because of close mechanism to closing direction to for example scope of 50mm, is necessary in this scope second power from the closed condition of door then.

Then, continue opening action, after door was opened to more than the 50mm, close mechanism was inoperative, so the power that is applied on the drawer only is acceleration and the frictional force that slide rail produced that is used to make drawer slide, be the opening action that the 3rd power just is enough to carry out drawer therefore with minimum power.Here, opening the structure that moment about 50mm reaches the drawer opening speed if make, then the 3rd power is only for the opposing frictional force that slide rail produced is just enough, in a word, and only with comparing first power, just being enough to carry out opening action than smaller the 3rd power of second power.When opening the drawer of refrigerator, as described above, have when beginning to open heavy especially, and after for example opening to a certain degree about 50mm with the just enough characteristics of some power.

On the one hand, though the speed of the door when opening action is arranged, in the moment that is pulled away from magnetic seal spare owing to begin action from halted state, so this scope promptly in the scope of first power speed minimum also passable.On the other hand, when drawer being continued be opened to the scope of the second and the 3rd power, if quicken gradually and become high speed and move like that, then because the action when approaching the user with hand traction drawer door with the speed of door, institute thinks the nature action, thereby is well suited for.

Also have, when opening drawer door, continue to apply tensile force in the structure that door is opened fully, for example, in occasion, perhaps be placed with the occasion of article, if when drawer door is met these the user that stands in front of the door, also can continue to apply tensile force and do not stop, so danger close.Therefore, do not continue to apply driving force when opening drawer door, only apply driving force in the short scope that begins to open, the frictional force that produces because of slide rail of the initial velocity that obtains in the scope of driving force is slowed down and the action of the utilization what is called inertia that stops is safe gradually then.

Have again, in the be failure to actuate occasion of situation of door drives such as power failure, because with manually opening and closing drawer, so wish it is following structure, even promptly be provided with the refrigerator drawer door drive, do not hinder with manually opening and closing the action of drawer door or applying unnecessary load and make the action dull yet.

Here, in patent documentation 1, need the door ejecting mechanism of short stroke and the door ejecting mechanism of long stroke, complex structure.In addition, in patent documentation 2, the structure of using worm screw and tooth bar is disclosed, but owing to be that the speed of opening drawer door is that the responsiveness of tooth bar is fixing structure, so, in order to release magnetic seal spare, the speed reducing ratio of exportable needed power must be increased (that is, that speed is slack-off) and make it constant.For this reason, with responsiveness slack-off and do not possess close the door function.In addition, in patent documentation 3, disclosing a kind of opening makes the driving mechanism counter-rotating behind the drawer box and makes the gear counter-rotating and remove the structure of engagement of the tooth of gear, but do not narrate for the structure of under the state of drawer only being opened a part, removing gear meshing or action, and do not possess the function of closing door.

At patent documentation 4, patent documentation 5, in the patent documentation 6, disclose to possess and be circular-arc or elliptoid rotation cam freely, and open the signal of switch and make cam rotation from door by being used to by means of drive unit, the forwards outstanding and cam gear that opens the door wide of the length-diameter part front end that makes cam, but in this prior art constructions, the amount that cam when rotation released door only is the variable quantity of the radius of the cam of following the cam rotation, so it is low in the speed that direction gave of releasing door, the opening of door is that the driving scope that opposite house gives driving force equates with overhang that cam forms roughly, the opening of door further be increased to exist and limit.In addition, the shutter drive unit make its avoid external force and when action door article relevant security such as sandwich do not consider.

Summary of the invention

So, the invention provides a kind of refrigerator, its can reduce refrigerator drawer door tensile force and open door trippingly, perhaps can automatically door be closed from the half-open door of what is called state, improve energy-saving effect.Speed characteristics when in addition, door drive of the present invention is suitable for pulling out the drawer door of refrigerator.

In order to solve above-mentioned problem, the present invention mainly adopts following structure.

A kind of refrigerator possesses: the drawer door of mounting on the slide rail that moves along fore-and-aft direction freely; With the available electronic door drive that opens or closes above-mentioned drawer door, it constitutes,

Above-mentioned door drive possesses: as the motor of drive source; The reducing gear that the rotation of above-mentioned motor is slowed down; With the rotating output shaft that slows down by above-mentioned reducing gear rotatably with the rotation driving body of axle supporting; And be arranged to and can move and at the binding parts that contact with above-mentioned rotation driving body in the driving scope of opening of regulation with above-mentioned drawer door,

Above-mentioned rotation driving body is provided with a plurality of drive transmission member, and above-mentioned a plurality of drive transmission member are configured to apart from different from the pivot of above-mentioned rotation driving body,

Above-mentioned binding parts have each the corresponding a plurality of bearing plane with above-mentioned a plurality of drive transmission member,

Promptly open direction when rotation at above-mentioned rotation driving body to the direction of opening above-mentioned drawer door, then apart from nearest first drive transmission member of the pivot of above-mentioned rotation driving body and the first bearing plane butt of above-mentioned binding parts, be accompanied by above-mentioned rotation driving body to the rotation of opening direction, be configured in second bearing plane of being far apart the above-mentioned binding parts of the second drive transmission member butt of above-mentioned pivot position than first drive transmission member, repeat above-mentioned butt successively, be configured in bearing plane away from the pairing above-mentioned binding parts of the last butt of drive transmission member farthest of above-mentioned pivot position, thereby begin to drive above-mentioned binding parts, behind the above-mentioned last butt, above-mentioned rotation driving body is removed above-mentioned the contact with above-mentioned binding parts

Has the current detecting mechanism of detecting the electric current that flows to above-mentioned motor, the judgement of whether braking as above-mentioned rotation driving body and set motor current braking judgment value, be that above-mentioned motor current is braked the occasion more than the judgment value by the detected motor current detected value of above-mentioned current detecting mechanism, making to the additional auxiliary voltage of above-mentioned motor to disconnect or reduction.

In addition, a kind of refrigerator possesses: the drawer door that moves at fore-and-aft direction; With with electronic or manual unlocking or close the door drive of above-mentioned drawer door, it constitutes,

Above-mentioned door drive have motor, by above-mentioned motor rotate driving rotary body, contact the web that moves with above-mentioned rotary body,

On above-mentioned rotary body, be provided with a plurality of drive divisions that relative above-mentioned web of cooperating with above-mentioned drawer door drives to above-mentioned switching direction, and, corresponding with above-mentioned a plurality of drive divisions respectively a plurality of bearing plane are set on above-mentioned web,

According to each configuration structure of above-mentioned a plurality of drive divisions, drive above-mentioned web according to the order of low speed and big power, middling speed and medium power, high speed and little power,

Detect the half-open door state of above-mentioned drawer door, and, utilize above-mentioned rotary body to drive above-mentioned web to the direction of closing above-mentioned drawer door based on above-mentioned half-open door status detection,

The determinating reference that whether is in the on-position that can not rotate with the driving of above-mentioned motor as above-mentioned rotary body is set motor current braking judgment value, motor current detected value in flowing in above-mentioned motor is the occasion more than the motor current braking judgment value, makes to the additional auxiliary voltage of above-mentioned motor to disconnect or reduction.

The present invention has following effect.

By adopting such structure, when when the door body is closed or opened, accompanying swivel plate such as object and braked, be judged as and cut off the power supply immediately after the braking or auxiliary voltage is reduced, thereby can constitute safe on-off action.

According to the present invention, can reduce refrigerator drawer door tensile force and trippingly door is opened with electronic, perhaps automatically door is closed with electronic, thereby can improve energy-conservation effect from the half-open door of what is called state.

In addition, provide a kind of safe refrigerator, have and make door drive avoid the protective device of external force, and detect sandwiching of object or conflict in the occasion of occasion of closing door and opening action.And, a kind of practicality and reliability and safe refrigerator are provided, can be with simple structure reliably with the electronic drawer door that opens or closes.

Description of drawings

Fig. 1 is the stereogram that expression constitutes the refrigerator structure that relates to embodiments of the present invention.

Fig. 2 is the cutaway view that expression relates to the refrigerator structure of present embodiment.

Fig. 3 is the vertical view of structure of the drawer door drive unit of the expression refrigerator that relates to present embodiment.

Fig. 4 is the stereogram of structure of the drawer door drive unit of the expression refrigerator that relates to present embodiment.

Fig. 5 is the stereogram of structure of the drawer door drive unit of the expression refrigerator that relates to present embodiment.

Fig. 6 is the figure of opening action of the drawer door drive unit of the explanation refrigerator that relates to present embodiment.

Fig. 7 is the figure of closing motion of the drawer door drive unit of the explanation refrigerator that relates to present embodiment.

Fig. 8 is the figure of the drawer door drive unit of refrigerator that explanation the relates to present embodiment position when stopping.

Fig. 9 is the block diagram of structure of control system of the drawer door drive unit of the expression refrigerator that relates to present embodiment.

The flow chart of the control sequence when Figure 10 is the opening action of drawer door drive unit of the expression refrigerator that relates to present embodiment.

The flow chart of the control sequence when Figure 11 is the closing motion of drawer door drive unit of the expression refrigerator that relates to present embodiment.

Figure 12 is the figure of other structure of the drawer door drive unit of the expression refrigerator that relates to present embodiment.

Figure 13 is the figure of the structure of the existing cam of explanation.

Figure 14 is that explanation is the stereogram of driving mechanism of installment state of each parts at center with rotation driving body shown in Figure 3.

Figure 15 is the vertical view that is used to illustrate the action of the door drive that comprises driving mechanism shown in Figure 14.

Figure 16 is the side view of door drive shown in Figure 15.

Figure 17 is the front view of door drive shown in Figure 15.

Figure 18 is the figure of opening action of the drawer door drive unit of explanation refrigerator of the present invention.

Figure 19 is the figure of the structure of opening switch of drawer door drive unit of the refrigerator of expression present embodiment.

Figure 20 is the enlarged drawing of the structure of opening switch of drawer door drive unit of the refrigerator of expression present embodiment.

Figure 21 is the block diagram of content of the control circuit of the relevant present embodiment of expression.

Figure 22 is the figure of the fundamental characteristics of expression dc motor.

Figure 23 is the time diagram that the braking of the swivel plate in the door drive of the relevant present embodiment of expression is judged.

Figure 24 is the flow chart of the braking of the swivel plate of having packed into of the door drive of the relevant present embodiment of expression control sequence when judging the closing motion of control.

Figure 25 is the figure of the relation of expression motor auxiliary voltage and braking judgment value.

Figure 26 is that expression has the load torque of torque controling mechanism occasion and the figure of motor characteristic.

Among the figure:

The 1-refrigerator main body, 2-refrigerating chamber, 3-switch room, the 4-ice-making compartment, 5-refrigerating chamber, 5a-door body, the 6-vegetable compartment, the 7-operation display part, 8-opens switch, the 10-door drive, 11-slide rail, 12-container, the 13-closure member, 14-magnetic seal spare, 15-driving mechanism, the 15a-base plate, 16-web, 16a-sliding part, 17-door test section, first test section of 17a-, second test section of 17b-, the 18-driving shaft, 19-swivel plate, 20-drive pin, 20a-first drive pin, 20b-second drive pin, 20c-the 3rd drive pin, the untie-sell of 20d-4 wheel driven, 21-bearing plane, 21a-first bearing plane, 21b-second bearing plane, 21c-the 3rd bearing plane, 21d-the 4th bearing plane, the 22-face that reverses, 23-opens direction, the 24-motor, the 24a-dc motor, 25-motor pinion, 26-idle wheel, 27-idle wheel pinion, 28-idle wheel, 29-idle wheel pinion, the 30-driven wheel, 31-torque limit mechanism, 32-rotates testing agency, the 33-amount of movement, 34-introduces position, 35-opening, the 36-arrow, 37a-first front end, 37b-second front end, 37c-the 3rd front end, 38-gap, the former point range of 40-, the 41-control circuit, 41a-microcomputer, 41b-driver IC, the 41c-current detection circuit, the 42-power supply, 70-notifying operator, 71-thickness gate, gap between the 72-door, the maximum opening of 73-, 74-inertia opening, 75-contact point, the 76-cam, the 77-pivot, 78-cam periphery, 79-cam receiving plate, the 80-direction of rotation, the 81-arrow, 82-cam radius, 83-circumferential speed, the 84-opening speed, the 85-sliding speed, 86-contact point, 87-framework, 88-pushes button, the 89-pressing lever, 90-backspring, 91-pressing quantity, the 92-switch main body, the 93-plunger, 94-distribution, 95-magnet, the 96-guide, 96a, the 96b-tab, 97-Hall IC, 98-Hall IC, 99-magnet, 100-magnet.

The specific embodiment

Based on accompanying drawing the refrigerator that relates to embodiments of the present invention is described below.

The refrigerator main body structure is described.

Fig. 1 relates to the stereogram of the refrigerator structure of embodiments of the present invention, and Fig. 2 is its longitudinal section.In Fig. 1 and Fig. 2, refrigerator main body 1 is divided into a plurality of storage chambers, and topmost becomes refrigerating chamber 2, the so-called appearance of french doors that the door of this refrigerating chamber 2 is opened for both sides to the left and right as an example.The downside of refrigerating chamber 2 is the storage chamber about being divided into, and for example one side is a function switch room 3, and the opposing party is for savings and take out the ice-making compartment 4 of the ice of being made by the not shown automatic ice-making plant that goes out.

And be that its underpart is the refrigerating chamber 5 that possesses the drawer door that can go out to open to the front layback, orlop is for also possessing the structure of the vegetable compartment 6 of drawer door.

On the door of refrigerating chamber 2, possess operation display part 7, and possess refrigerating chamber 5 open switch 8a and vegetable compartment 6 open switch 8b, the person's of being to use push switch 8a, 8b can indicate the structure of the opening action of drawer.Here, under refrigerating chamber 5 is arranged on situation above leaning on than vegetable compartment 6, the top of opening switch 8b that switch 8a is arranged on vegetable compartment of opening with refrigerating chamber, if be predisposed to identically, distinguish easily when then the user operates and which is operated to open switch 8 be good just with the position relation of door.

Structure to door drive describes.

Be example explanation door drive with refrigerating chamber 5 below.It is supported that the door body 5a of refrigerating chamber 5, the container 12 of store food pull out ground by slide rail 11 freely to the front side.Being provided with the boosting mechanism of closing from above-mentioned refrigerating chamber 5 to closing direction that introduce in the inboard of slide rail 11 is closure member 13, closure member 13 is when closing the refrigerating chamber of temporarily opening 5, if opening for example is below the 50mm, then give the power introduced to the inboard by the power of not shown spring, the action of closing assisted refrigerating chamber 5 up to the magnetic seal spares 14 that are located at 5 full weeks of refrigerating chamber with refrigerator main body 1 absorption and door is closed.

Be provided with door drive 10 in the inside of refrigerating chamber 5.The structure of door drive 10 is as follows: possess driving mechanism 15 and web 16, wherein, driving mechanism 15 have be fixedly installed on refrigerator main body 1 one sides as the motor of drive source and reducing gear that the rotation of motor is slowed down; The binding parts of web 16 below the door body 5a of refrigerating chamber 5 opens and closes and be arranged in the present embodiment container 12 inboard, and afterburning and open and close refrigerating chamber 5 by 15 pairs of webs 16 of driving mechanism to the moving direction of slide rail 11.Detailed structure and function about driving mechanism 15 and web 16 will be narrated in the back.Face side at refrigerating chamber 5 is provided with a test section 17, detect whether refrigerating chamber 5 closes or the opening of refrigerating chamber 5 whether in for example ormal weight (aftermentioned about 30mm, the driving amount of closing shown in Fig. 7 (a), promptly opening 35) in, and carry this signal to control circuit described later.

Three grades of structures of quickening link rod are described.

Secondly, use Fig. 3 to Fig. 5 to describe the door drive 10 that possesses driving mechanism 15 and web 16 in detail.Here, door drive 10 below describes as the structure that is arranged on the refrigerating chamber 5.

Fig. 3 is the vertical view that possesses the door drive 10 of driving mechanism 15 and web 16 from Fig. 2 top finding.Fig. 4 and Fig. 5 are the stereograms of one of the internal structure of expression driving mechanism 15 example.

In driving mechanism 15, being supported with the rotation driving body that the driving shaft 18 around rotating output shaft rotates freely with axle is swivel plate 19, possesses the drive pin 20 as drive transmission part on swivel plate 19.Be provided with three drive pins in the present embodiment, distance according to distance driving shaft 18, be provided with the first drive pin 20a at distance r1 place, be provided with the second drive pin 20b at distance r2 place, be provided with the 3rd drive pin 20c at distance r3 place, each drive pin 20 cylindrical shapes, and the central shaft of drive pin 20 is parallel with the rotary middle spindle of driving shaft 18.Here be r1＜r2＜r3.

In the present embodiment, swivel plate 19 rotates to arrow C CW direction when opening refrigerating chamber 5.Web 16 is arranged on the drawer door 5 of refrigerating chamber 5 as mentioned above, so move freely to arrow 23 directions along slide rail 11.In Fig. 3, the diagram left moves connecting plate 16 by direction left and opens refrigerating chamber 5 to the face side that is refrigerator.On web 16, possess: the first bearing plane 21a that contacts the first drive pin 20a when opening refrigerating chamber 5; Contact the second bearing plane 21b of the second drive pin 20b; And the 3rd bearing plane 21c that contacts the 3rd drive pin 20c.Detailed description when drive pin 20 and bearing plane 21 actions will be narrated in the back.

In Fig. 4 and Fig. 5, on the rotating shaft of motor 24, be provided with motor pinion 25, slow down with idle wheel 26 engagements.Idle wheel 26 and the rotation of idle wheel pinion 27 one, idle wheel pinion 27 and idle wheel 28 engagements.Idle wheel 28 and the rotation of idle wheel pinion 29 one, idle wheel pinion 29 slows down with driven wheel 30 engagements.Driving shaft 18 links with driven wheel 30, and by this gear structure the rotating speed of motor 24 is reduced to for example 1/100 degree, and makes swivel plate 19 rotations that are located on the driving shaft 18.

In the present embodiment, between idle wheel 28 and idle wheel pinion 29, torque limit mechanism 31 is set, swivel plate 19 is being applied under the situation of excessive external force, by intervention torque limit mechanism 31 is being housed idle wheel 28 and idle wheel pinion 29 are slided mutually, thereby can prevent the breakage of driving mechanism.In addition, make and rotation testing agency 32 is set on driving shaft 18 detects the structure of the position of rotation of driving shaft 18.One example of this rotation testing agency 32 is variable resistances that its resistance value of rotation by axle changes.

Opening action is described.

Detailed action when secondly, using Fig. 6 that the door drive 10 that utilizes present embodiment is opened refrigerating chamber door 5a describes.Fig. 6 is the figure of the action of door drive 10 when opening refrigerating chamber 5 of expression present embodiment, (a) same with Fig. 3, expression refrigerating chamber 5 state of closing, and show by with (b) (c) (d) serve as that order is moved the action of opening refrigerating chamber 5 (e).Swivel plate 19 rotates freely around driving shaft 18, and web 16 moves supported freely to the diagram left and right directions, and web 16 is provided on the refrigerating chamber 5, so the opening action of refrigerating chamber 5 is represented in web 16 action of direction left.Here, the datum line of the position of the diagram left end of the web 16 in the state that expression refrigerating chamber 5 is being closed is expressed as and introduces position 34.

In (b) state, swivel plate 19 is to the rotation of arrow C CW direction, and the first drive pin 20a contacts with the first bearing plane 21a, web 16 is produced the power of arrow 23a direction.At this moment, being the position apart from r1 shown in Figure 3 because the first drive pin 20a is positioned at apart from driving shaft 18, then is T/r1 so pass to the power of web 16 from the first drive pin 20a be made as T as if the torque that will impose on driving shaft 18.By this power is set for the power quickened than the introducing power of the power of the magnetic seal spare that is pulled away from refrigerating chamber 5 and closure member 13 and to the quality of the deadweight of refrigerating chamber 5 and the food deposited make a concerted effort big, thereby be pulled away from the absorption of magnetic seal spare, web 16 to illustrating left to moving, begins to open refrigerating chamber 5 with refrigerating chamber 5.

And under (c) state of arrow C CW direction rotation, the second drive pin 20b contacts with the second bearing plane 21b at swivel plate 19, and the first drive pin 20a leaves from the first bearing plane 21a.Promptly since the second drive pin 20b be positioned at apart from driving shaft 18 for shown in Figure 3 apart from the position of r2 and because r2＞r1, the second drive pin 20b are the distance of driving shaft 18 than the first drive pin 20a from pivot, so it is fast to rotate circumferential speed.Therefore behind the second drive pin 20b and the second bearing plane 21b butt, the first drive pin 20a leaves from the first bearing surface 21a.

Under this state, the second drive pin 20b contacts with the second bearing plane 21b, gives the power of arrow 23b.At this moment, being the position apart from r2 shown in Figure 3 because the second drive pin 20b is positioned at from driving shaft 18, then is T/r2 so pass to the power of web 16 by the second bearing plane 21b from the second drive pin 20b be made as T as if the torque that will impose on driving shaft 18.Though this power than under the state shown in Fig. 6 (b) to impose on the power of web 16 by the first drive pin 20a on arrow 23a direction little, but because magnetic seal spare is pulled away from, so the applied force of this moment is set at than the introducing power of closure member 13 and further getting final product greatly with joint efforts the power of the quality acceleration of the deadweight of refrigerating chamber 5 and the food deposited, web 16 to illustrating left to moving, continues the opening action of refrigerating chamber 5 with refrigerating chamber 5.

Then, under (d) state of arrow C CW direction rotation, the 3rd drive pin 20c contacts with the 3rd bearing plane 21c at swivel plate 19, and the second drive pin 20b leaves from the second bearing plane 21b.Promptly the 3rd drive pin 20c be positioned at from driving shaft 18 for shown in Figure 3 apart from r3 the position and because r3＞r2, the 3rd drive pin 20c is the distance of driving shaft 18 than the second drive pin 20b from pivot, so it is fast to rotate circumferential speed.Therefore behind the 3rd drive pin 20c and the 3rd bearing plane 21c butt, the second drive pin 20b leaves from the second bearing surface 21b.

Under this state, the 3rd drive pin 20c contacts with the 3rd bearing plane 21c, gives the power of arrow 23c.At this moment, being the position apart from r3 shown in Figure 3 because the 3rd drive pin 20c is positioned at from driving shaft 18, then is T/r3 so pass to the power of web 16 by the 3rd bearing plane 21c from the 3rd drive pin 20c be made as T as if the torque that will impose on driving shaft 18.Though this power than under the state shown in Fig. 6 (c) to impose on the power of web 16 by the second drive pin 20b on arrow 23b direction also little, but because refrigerating chamber 5 has carried out opening action and has moved to the direction of arrow 23c, so refrigerating chamber 5 has container and comprises the momentum of stored food in interior deadweight and speed correspondence, pass to the power of the 3rd bearing plane 21c of web 16 by this momentum with from the 3rd drive pin 20c, the tensile force of opposing closure member 13 and can further continue opening action.

Then, under (e) state of arrow C CW direction rotation, represented the state that the 3rd drive pin 20c leaves from the 3rd bearing plane 21c basically at swivel plate 19.Is that the scope that web 16 is subjected to from the power of drive pin 20 is that what is called is opened the driving scope from the state of Fig. 6 (a) up to the scope of the amount of movement 33 of the web 16 of the state that reaches Fig. 6 (e).Here, the amount of movement 33 of this web 16 is set at and promptly closes reheat range than the introducing amount of closure member 13 and be advisable greatly.

For example be 20mm promptly, if the introducing stroke of the closure member of scope is closed in conduct, the amount of movement 33 of web 16 is 50mm, even then web 16 stops in the position shown in Fig. 6 (e), promptly refrigerating chamber 5 stops, and the refrigerating chamber of just having opened 5 can not be closed because of closure member 13 yet.But, if refrigerating chamber 5 is more opened than the state of Fig. 6 (e) and web 16 to the diagram left to the words that move, though then web 16 is not subjected to the driving force from drive pin 20, but because refrigerating chamber 5 has the speed towards arrow 23d direction, so can continue opening action till the friction load that is had because of slide rail 11 slows down gradually and stops.Owing to move like this, so the opening of refrigerating chamber 5 is bigger than the amount of movement 33 of web 16.

As mentioned above, when being implemented in the opening action of refrigerating chamber 5 is not the driving force that continues to apply to opening direction, but only in the short scope that begins to open, apply driving force, thereafter the translational speed that obtains in the scope of the driving force action of slowing down gradually and stopping because of the frictional force that slide rail had, so, in the user's that stands in front of the door occasion or the occasion of having placed article, can not be subjected to even run into refrigerating chamber 5 yet, thereby be safe to the driving force of opening direction.

As mentioned above, when closed condition begins to open refrigerating chamber 5, release web 16 and driving by being configured in near the first recently drive pin 20a of driving shaft 18, be pulled away from magnetic seal spare with the bigger power of low velocity output, then, drive by being arranged on to release web 16 and export medium power with the medium speed than the first drive pin 20a, the second drive pin 20b far away, thereby the introducing power of opposing closure member 31 and continue opening action and refrigerating chamber 5 is quickened, next, release web 16 by being arranged on from driving shaft 18 the 3rd drive pin 20c also far away than the second drive pin 20b, though power is little, but can further quicken refrigerating chamber 5 by high-speed driving, carry out the opening action of refrigerating chamber 5 reliably, thus all right.

In the structure of present embodiment, drive pin 20 contacts with web 16 and gives the position of driving force, observe from driving shaft 18, what be in relative refrigerating chamber 5 opens the roughly rectangular direction of direction 23, so the rotating speed of the speed of opening direction 23 of drive pin 20 and swivel plate 19 and proportional to the brachium of drive pin 20.Like this, only be to compare with the structure of the variable quantity of the radius of the contact point of door portion with the amount of using rotating cam that door is released in the prior art to above-mentioned cam, be convenient to make the speed high speed of releasing door.Owing to be this structure, so owing to can realize only applying driving force in the short scope that begins to open, the opening speed that obtains in the scope of driving force slows down gradually because of the frictional force that slide rail had and the action that stops is good thereafter.

After utilizing above-mentioned action to open refrigerating chamber 5, swivel plate 19 further continues the rotation to the CCW direction, and the state that reaches Fig. 6 (a) stops the rotation.In addition, certainly, this moment, web 16 was not in the position shown in Fig. 6 (a), owing to refrigerating chamber 5 is opened, so be in the state that moves to the diagram left.

Such as described above, in the door drive of present embodiment, swivel plate 19 is behind the opening action that has carried out refrigerating chamber 5, proceed to unidirectional rotation and the words that turn around, can return the state when closing refrigerating chamber 5, promptly owing to the former point range that can turn back to, so high speed returns to initial point and situation is better with Fig. 8 explanation.Suppose that swivel plate 19 is not to the rotation of direction but carried out rotating round about after an end stops behind the opening action of refrigerating chamber 5 and return to the words of the structure of former point range, then as present embodiment as can be known, with compare to the rotation of a direction, the time that then is back to former point range is too much.

Calculating to opening describes.

The door opening mechanism that utilizes present embodiment is opened the opening in when door of refrigerating chamber 5 to be described.Figure 18 is the figure of the relation of the speed of the refrigerating chamber of explanation when opening wide refrigerating chamber 5 and opening.

By the opening action of refrigerating chamber illustrated in fig. 65, in the scope of amount of movement shown in Figure 180 33, refrigerating chamber 5 is opened by means of press surface 21 applies the power of opening direction from drive pin 20 by door drive 10.Here, because refrigerating chamber 5 has speed V in the moment (5 ') of opening with amount of movement 33, so because of inertia continues to open, and the interval of inertia opening 74 do not have driving force, and the position that finally is opened to maximum opening 73 of slowing down gradually (5 ") and stop.

Here, if will comprise stored food is made as m at the total quality of interior refrigerating chamber 5, then the locational capacity E of amount of movement 33 is

E=(m * V ²)/2 (formula 1)

Here, if the coefficient of friction that slide rail 11 is had is made as μ, acceleration of gravity is made as g, then the frictional force F that is produced by slide rail 11 is

F=μ * m * g (formula 2)

Be equivalent to frictional force F and rubbed and the distance L that moves is the long-pending of inertia opening 74 by the ENERGY E 2 of frictional force consumption, so,

E2=L * F=L * μ * m * g (formula 3)

Here, if the refrigerating chamber kinetic energy that begins to have is most all consumed by friction to stopping, then owing to E=E2, so

(m * V ²)/2=L * μ * m * g (formula 4)

Both sides are divided by m,

(V ²)/2=L * μ * g (formula 5)

So with (formula 5) distortion, inertia opening 74 (being L) is expressed as

L=(V ²)/(2 * μ * g) (formula 6)

Promptly, by formula 6 as can be known, it doesn't matter for the quality m of inertia opening 74 and refrigerating chamber 5, depend on the coefficientoffriction of slide rail and be that drive pin 20 deviates from mutually with press surface 21 at amount of movement 33 speed V constantly, the driving force of opening direction that is delivered to web 16 from swivel plate 19 disappears, and begins to open speed constantly with inertia.

Here how all, the quality m of refrigerating chamber 5 is different because of the amount of stored food certainly, no matter but wish but then with the amount of maximum opening 73 food of the refrigerating chamber 5 of the electronic occasion of opening refrigerating chamber almost fixed.That is, the coefficientoffriction of slide rail 11 is fixed values of being determined by slide rail, wants to make maximum opening 73 almost fixed, preferably reduces the change of speed V because of amount of food.So, it is desirable to make the speed reducing ratio of driving mechanism 15 enough big, the change of the load torque that imposes on motor 24 is reduced, with the structure of the change that reduces rotating speed, for example preferably make speed reducing ratio more than 1/100.By increasing speed reducing ratio, make the output torque of motor 24 that bigger affluence amount be arranged, thus can reduce the change of the motor that how much causes 24 rotating speeds of amount of food, thus the change of the maximum opening 73 that how much causes of amount of food can be reduced, thereby be fit to.

Contrast with cam structure is described.

Speed V when refrigerating chamber 5 is only opened amount of movement 33 and utilized inertia to move, as utilize Fig. 6 (d) illustrates, owing to be the speed that the 3rd drive pin 20c moves to the direction of opening direction 23c, so proportional with the rotating speed of swivel plate 19, and with the distance of the pivot of the contact point 75c of the 3rd drive pin 20c and the 3rd press surface 21c and driving shaft 18 be that radius of turn r is proportional.Here, as at Fig. 6 (c) to as shown in Fig. 6 (d), the position of contact point 75c (75d among Fig. 6 (e)), with pivot be driving shaft 18 be positioned at when being benchmark with open direction 23 roughly the direction of quadrature illustrate above, so web 16 to the translational speed of opening direction 23 and the 3rd drive pin 20c when driving shaft 18 rotates to circumferencial direction speed circumferential speed about equally.

Secondly, in order to compare, use Figure 13 that the opening speed of the structure of the known all the time cam of use is described with the structure of relevant above-mentioned illustrated present embodiment.In Figure 13, cam 76 supports with axle along the direction rotation of direction of rotation 80 freely around pivot 77, and is the writing board shape of periphery 78 off-centre.Be provided with cam receiving plate 79 contiguously with the periphery 78 of cam 76, cam receiving plate 79 is arranged on the refrigerating chamber 5, push cam support plate 79 to arrow 81 directions and move to direction of rotation 80 rotations by cam 76, so refrigerating chamber 5 is opened to the diagram left with cam receiving plate 79.

At this moment, cam 76 contacts at contact point 86 places with cam support plate 79 ' when the position of 76 ' shown in the with dashed lines.If represent the words of the circumferential speed of contact point 86 at this moment with arrow 83, then cam receiving plate 79 ' is the part that the projection composition to opening direction of the arrow 83 of circumferential speed promptly is equivalent to arrow 84 to the translational speed of opening direction in diagram left side, is that the part of arrow 85 makes to produce on cam 76 and the lobe plate 79 and slides to the projection composition with the direction of opening the direction quadrature.Like this, used the variable quantity of radius of the contact point of the cam 76 that only produces by cam 76 rotations to the speed of opening direction of occasion of structure of cam and cam receiving plate 79, so not only the circumferential speed than cam 76 is little for cam receiving plate 79 suffered speed, and between cam 76 and cam receiving plate 79, produce to slide, thereby be easy to generate problems such as the wearing and tearing of cam 76 or cam receiving plate 79 and fricative.Have again, in the structure of having used cam shown in Figure 13, have only the function that door is pushed to left, and the function of door not being shut.

Closing motion is described.

In the occasion of having closed refrigerating chamber, refrigerating chamber 5 is not closed to magnetic seal spare 14 and is sucted for a certain reason sometimes, and having the gap between magnetic seal spare 14 and refrigerator main body 1 is so-called half-open door state.The action of the door drive 10 under so half-open door state is described with Fig. 7.

The figure of action when Fig. 7 is the door drive 10 locking refrigerating chambers 5 of expression present embodiment, (a) be that expression refrigerating chamber 5 is not closed, the diagram left end of web 16 is in than introducing position 34 and has only moved the state that the driving scope is an opening 35 of closing that can carry out closing motion.If on refrigerating chamber 5, be provided with closure member 13, then the introducing power refrigerating chamber that produces by closure member 13 usually is introduced into and is closed, but the action that seldom produces slide rail 11 hangs up because of a part of food, or some reason temporary transient sluggish (having some setbacks) and situation about can not introduce.

Here, if with swivel plate 19 around driving shaft 18 to arrow C W direction rotation, the face that reverses 22 butts in the 3rd drive pin 20c and diagram left side then, this face 22 that reverses is faced with bearing plane 21 of web 16.The state that Fig. 7 (b) expression makes swivel plate 19 be further rotated to arrow C W direction, but since web 16 pushed to arrow 36 directions by the 3rd drive pin 20c and move, so the diagram left end of web 16 moves to introducing position 34 always.Position shown in this Fig. 7 (b) represents that magnetic seal spare 14 is adsorbed onto that refrigerating chamber 5 is in the position of closing fully on the refrigerator main body 1.Then, make swivel plate 19 be in the state of Fig. 7 (c) to the rotation of arrow C CW direction, stop up to rotating to same position shown in Figure 3.

By action as described above,, refrigerating chamber 5 is in the state of so-called half-open door even not closing fully, by swivel plate 19 is rotated to the rightabout with the occasion of opening refrigerating chamber 5, also can apply the power of the direction of closing refrigerating chamber 5 and it is closed, thereby prevent that half-open Men Erwei is good web 16.

As illustrated just now, power when opening refrigerating chamber 5 need be pulled away from the above power of summation of the power of magnetic seal spare 14 and the introducing power that closure member 13 causes, but owing to when closing, do not need to be pulled away from the power of magnetic seal spare 14, and produce the introducing power of closure member 13, so the words that the power of closing that is applied by the door drive 10 of present embodiment is compared with the power of opening are that very weak power is just enough.According to present embodiment, owing to be formed in when closing refrigerating chamber 5, be positioned at the structure of the face that reverses 22 of the 3rd drive pin 20c pushing web 16 of farthest from driving shaft 18, so, the driving torque that dummy adds to drive pin 18 is identical when opening, but the power of closing is compared with tensile force, also only little r1/r3 and be good.Like this, even just in case accompanying between refrigerating chamber 5 and the refrigerator main body 1 under the situation of finger etc., so because the little safety of chucking power.

Have, making closing velocity is that the action that low speed is slowly closed is safe again.Therefore, preferably make closing motion than the action of opening refrigerating chamber 5 low speed more.

Here, can close the opening 35 of refrigerating chamber 5 according to Fig. 2 explanation and promptly close the driving scope, opening 35 is that thickness gate 71 is little than the thickness of the door body 5a of the front that forms refrigerating chamber 5 preferably.This be because, if make opening 35 bigger than thickness gate 71, might between the door that produces between the door of refrigerating chamber 5 and vegetable compartment 6 or switching chamber 3, clamp finger etc. in gap 72 when then beginning to introduce refrigerating chamber 5, but if opening 35 is littler than thickness gate 71, then can not clamp finger, so security is higher.

Manual activity is described.

Secondly, use the optimum position of the swivel plate 19 of Fig. 8 when being in refrigerating chamber 5 closing state to describe.In Fig. 8, consistent with introducing position 34 with the diagram left end of the illustrated web 16 of solid line, refrigerating chamber 5 is in the closed position.In refrigerator,, but use the situation that pulls out refrigerating chamber 5 because of certain reason user in addition even possess door drive 10 as the present embodiment.Perhaps, hinder the occasion of akinesia etc. for some reason at door drive 10, the user wishes manually freely openable.In the occasion of so manual switching, it is desirable to door drive 10 and be formed in the structure that does not produce the phenomenon that hinders user's manual activity or heavy etc. when opening and closing refrigerating chamber 5.

If the user pulls out refrigerating chamber 5 with the state of manually closing from refrigerating chamber 5 and opens, the web 16 that then is arranged on the refrigerating chamber 5 moves the position that is in dotted line to the diagram left side.In the position of dotted line, additional to each symbol ' represent.Here, swivel plate 19 is in the position of representing with the solid line of Fig. 8, in this position, at the front end that is arranged at the second bearing plane 21b on the web 16 promptly between the second front end 37b and the first drive pin 20a gapped 38, when if web 16 moves to the diagram left, there are discontiguous position relation in the second front end 37b and the first drive pin 20a, and then user's web 16 when pulling out refrigerating chamber 5 does not contact with drive pin 20, thereby can freely pull out refrigerating chamber 5 and open.

Secondly, swivel plate 19 is in the position 19 ' of dotted line, in this position, be arranged between the first front end 37a on the web 16 and the 3rd drive pin 20c gapped 39, if when moving, there are discontiguous position relation in the first front end 37a and the 3rd drive pin 20c to web 16 to the diagram left, then the user is when pulling out refrigerating chamber 5, because web 16 do not contact with drive pin 20, thereby can freely pull out refrigerating chamber 5 and open.

As above-mentioned illustrated, in order not contact with drive pin 20, as long as link in the angular range that the line of the driving shaft 18 and the first drive pin 20a is in former point range 40 (angular range of the swivel plate 19 that connecting plate 16 is not interfered with drive pin 20) at user's web 16 when manually opening and closing refrigerating chamber 5.Therefore,, it is desirable to set for swivel plate 19 and be in above-mentioned former point range 40 (can produce the angular range of the line of the binding driving shaft 18 of above-mentioned gap 38 and 39 and the first drive pin 20a) in the occasion of closing refrigerating chamber 5, also good with manually opening and closing usability.The angular range of such swivel plate 19 is called in the present embodiment is positioned at former point range.

Structure to control system describes.

Secondly, use Fig. 9 that the structure of the control system that is used for control gate drive unit 10 is described.Fig. 9 is the block diagram of the structure of expression control system.Possess the operation display part 7 (with reference to Fig. 1) of opening switch 8, press when opening switch 8, transfer signal to control substrate 14 the user.Be arranged on each motor 24 of the driving mechanism 15 (with reference to Fig. 2, Fig. 4, Fig. 5) on refrigerating chamber 5 and the vegetable compartment 6 and detect the rotation testing agency 32 of position of rotation of driving shaft 18 and the door test section 17 of the open and-shut mode of detecting gate with control substrate 41 and be connected.92 expressions are arranged on the switch main body of opening switch 88 92 by user's operation on the door body 6a of door body 5a and vegetable compartment 6 of refrigerating chamber 5, it is narrated in the back with Figure 20 in detail, the switch 88 that is arranged on this refrigerating chamber 5 and the vegetable compartment 6 can be provided with selectively with the switch 8 of opening of refrigerating chamber 2 shown in Figure 1, considers that in addition the convenience that uses also can be provided with both sides' switch.

The needed electric power of the driving of door drive 10 and control circuit 41 is supplied with by power supply 42.Rotation testing agency 32 (with reference to Fig. 5) can be the variable resistance that its resistance value of rotation by axle changes as an example, or detects the detecting element of microswitch etc. of position of rotation of the regulation of axle.Door test section 17a (with reference to Fig. 2) possesses first a test section 17a that whether closes fully who detects refrigerating chamber 5, with the opening of the door that detects refrigerating chamber 5 second test section 17b below the opening 35 (with reference to Fig. 7) of regulation whether, for example, can be the Hall element that a magnet that is equipped with and refrigerator main body 1 are equipped with, or the detecting element of microswitch etc.

On operation display part 7, also can be equipped with and report element 70, be used for door is in the advisory user of half-open door state.The example that this reports member 70 can make siren pipe, and perhaps makes lamp light or neglect and brightly goes out suddenly.

Describe opening control.

Use the open control sequence of Figure 10 when opening refrigerating chamber 5 to describe.Figure 10 is the flow chart of opening control sequence of expression when opening refrigerating chamber 5.

If beginning opening action (square 43), then control circuit 41 monitors the state of rotation testing agency 32, and whether the swivel plate 19 of detection driving mechanism 15 is in the former point range 40 (square 44) that begins to move.Here, former point range 40 is meant as shown in Figure 8, even in the occasion with manual on-off action refrigerating chamber 5, web 16 also is in not the state of the scope of interfering with drive pin 10.

If swivel plate 19 is in the occasion of former point range 40,, makes swivel plate 19 rotations and be in former point range motor 24 energisings (square 45).Making motor 24 is that signal that control circuit 41 is used to spinning testing agency 32 is judged former relatively point range 40 which direction of deflection of swivel plate 19 and to the direction that applies of motor 24 decision driving voltages to the judgement of CCW direction rotation still to CW direction rotation.

Be in former point range 40 detecting swivel plate 19, and control circuit 41 detects and after users have operated the situation of opening switch 8 motor 24 energisings (square 47) is made swivel plate 19 rotations.The direction of rotation of the swivel plate 19 of this moment is the CCW direction in Fig. 3, if swivel plate 19 rotations, then as illustrated in fig. 6, web 16 is driven pin 20 pushings and refrigerating chamber 5 is opened.Motor 24 continues rotation, if confirm the situation (square 48) that the position of rotation by rotation testing agency 32 detected swivel plates 19 has entered former point range 40, then makes motor 24 stop (square 49) and finishes a series of opening action (square 50).

The voltage application method is described.

Here, to making motor energising (square 47) and voltage application method when beginning to open refrigerating chamber 5 describes.Rated voltage sharply increases when motor is switched on, and at the moving dash current of the coil midstream of motor, the maximum output torque of motor output begins rapid rotation from halted state.Therefore, when beginning to open, refrigerating chamber 5 carries out maximum acceleration, being swift in motion and opening with sudden force when beginning to open.

So, wish voltage is switched on as follows with changing, that is: with motor 24 energisings (square 47) time, not that rated voltage sharply increases, but at the beginning of energising, for example apply the low-voltage of 1/2 degree of rated voltage, behind beginning driving gate drive unit 10, when opening refrigerating chamber 5 voltage is increased gradually, and before the state of (c) in opening action shown in Figure 6 to (d), the speed to opening direction that is delivered to web 16 from drive pin 20 become maximum, voltage is risen reach rated voltage.Like this, increase gradually by making voltage, the action when refrigerating chamber 5 begins to open becomes slowly, so can not open with sudden force, can open action with high utmost point sense.

Have, behind the state that has passed through Fig. 6 (e), swivel plate 19 continues after the rotation of CCW direction, and stops after rotating to the position shown in Fig. 6 (a) again, but after refrigerating chamber 5 is opened, is not in the state that swivel plate 19 is not applied load and dally.Therefore, also can make the voltage ratio rated voltage that imposes on motor 14 low behind the state that has passed through Fig. 6 (e), the rotating speed that makes motor 24 is a low speed.Like this, by making the low speed that rotates to be of motor 24, have the effect that can reduce noise that motor 24 produces or vibration and realize quiet action.Have again,, stopped, so suitable thereby stop the precision raising by make motor 24 stop Shi Buhui with low speed rotation though will make swivel plate 19 stop at former point range 40 illustrated in fig. 8 reliably.

Construction of switch is described.

Secondly, illustrate that the user opens an example of the construction of switch when indicating to the switching mechanism of present embodiment.Figure 19 is the partial sectional view of refrigerator that possesses the door open/close machine of present embodiment, and Figure 20 represents the enlarged drawing of S portion shown in Figure 19.When S portion represents to constitute the top edge of front door body 5a of refrigerating chamber 5 and door and closes with main body 1 side frame body 87 of a butt near.

Upper end at door body 5a is provided with button 88, and this button 88 is more outstanding than door body 5a.Be provided with pressing lever 89 in the inboard of button 88, button 88 and pressing lever 89 run through a body 5a and supported slidably.Button 88 and pressing lever 89 utilizes the power of reversing that is produced by backspring 90, among Figure 20 (a) by pay illustrate left to power and by not shown holding positions such as brake.Be provided with the switch main body 92 of microswitch for example etc. in a side that contacts with the door body 5a of framework 87, be provided with from switch main body 92 to control circuit 41 distribution 94 in the inside of framework 87.

If the user pushes button 88 with hand, then shown in Figure 20 (b), be to push button 88 and pressing lever 89 structure to the only mobile pressing quantity 91 in diagram right side, pressing lever 89 is pushed plunger 93 and the closed not shown contact that is arranged on switch main body 92 inside that is arranged on the switch main body 92, thereby the signal that the user can be pushed button 88 is delivered to control circuit 41.

If the user leaves hand and pushes button 88, then the diagram left that produces by backspring 90 of button 88 and pressing lever 89 to power move to the diagram left, return to the state shown in Figure 20 (a), the contact of plunger 93 recoveries and switch main body 92 inside turns back to the state of disconnection.

By such formation, can constitute switch main body 92 and the distribution that switch main body 92 is connected to control circuit 41 only is configured in the structure of the inside of main body side framework 87, so have the effect that distribution needn't be set on door body 5a.

Different with the structure of above-mentioned present embodiment, if on door body 5a, switch main body 92 is set, then control circuit 41 be drawn and be connected to distribution 94 must to main body 1 from door body 5, and a door body 5a is the structure that opens and closes as drawer type, so distribution 94 need have than the big length of the maximum opening of refrigerating chamber 5 when closing refrigerating chamber 5 and be in lax state.In this structure, when pulling out refrigerating chamber, need above-mentioned lax distribution 94 also to pull out together, but distribution 94 might twine or hang over the somewhere when opening and closing.

Have again,, when pushing button 88, apply refrigerating chamber 5 power of side closure direction inwards from the user.Just motor 24 energisings and refrigerating chamber 5 are carried out opening action with electronic to arrow 23 directions if just pushed button 88 from control circuit 41 the user, then refrigerating chamber 5 beginnings direction in front of the rightabout with user's reinforcing is the user is opened incipient the time, is to feel factitious action for the user.

On the other hand, in the present embodiment, if push the moment of button 88 does not switch on to motor 24 (with reference to Fig. 4) the user, and when hand left the button of temporarily pressing 88 to the action of motor 24 energisings, then the user leaves button 88 with hand and along with the action that hand is recalled to the front, refrigerating chamber 5 is opened to the front, so the action of the direction of action of user's hand and refrigerating chamber 5 (opening) direction is same direction, therefore do not have inharmonious sense from the user, have the effect that obtains the nature operation sense action.

This action can realize motor 24 energisings and refrigerating chamber 5 with electronic action of opening so long as detect that users leave button 88 with hand and the contact of switch main body 92 inside turns back to the moment of off-state at control circuit 41.

Closing control is described.

Control sequence when the so-called half-open door state that uses Figure 11 that refrigerating chamber 5 is never closed is fully closed refrigerating chamber 5 describes.Figure 11 is the flow chart of the closing control order of expression when closing refrigerating chamber 5.About from beginning action (square 51), identical to square 45 with the square 43 of Figure 10 to detecting former point range (square 52) up to motor 24 energising (square 53) preceding actions.

If first test section 17a of door test section 17 detects the door of refrigerating chamber 5, can confirm that then refrigerating chamber 5 is not half-open state but closed condition, thereby finish a closing motion (square 55).First test section 17a fails that detecting gos out closes, and second test section 17b detect go out and the opening of refrigerator main body after opening is below 35, then refrigerating chamber 5 is in the state of opening below 35 with opening.If second test section 17b fails to detect door, then refrigerating chamber 5 is with opening more than 35 and opening, so can't close with the door open/close machine of present embodiment.This occasion pipes notifying operator 70 and with the alert notification user (square 57) of half-open door.

If second test section 17b detects door, then refrigerating chamber 5 is in half-open door state and is the zone that can be closed by door drive 10, so to motor 24 energisings (square 58).The direction of rotation of this moment is the CW direction in Fig. 7.And this moment, be reduced to for example 1/2 to 1/3 degree of rated voltage by the voltage that will impose on motor 24, if the rotating speed of swivel plate 19 is reduced, then rotate to the CW direction with low speed owing to swivel plate 19, so the 3rd drive pin 20c does not produce the bump that conflicts with the 3rd bearing plane 21c of web 16, and the power of closing descends, and is therefore suitable at secure context.

If to the CW direction energising for example 3 seconds stipulated time (square 59), then swivel plate 19 reaches the state of Fig. 7 (b) with motor 24, and the direction that makes web 16 promptly close refrigerating chamber 5 to arrow 36 directions moves and closes refrigerating chamber 5.After process institute fixes time, this time motor 24 energisings are moved (square 60) to the CCW direction, shown in Fig. 7 (c), make swivel plate 19 rotate to former point range 40 (shown in Figure 8), if the signal detection of utilizing rotation testing agency 32 (with reference to Fig. 5, Fig. 8) then makes the rotation of motor 24 stop (square 62) to being positioned at (square 61) after the initial point scope.Here, if first test section 17a detect the situation (square 63) that refrigerating chamber 5 is closed, then owing to can confirm that refrigerating chamber 5 is fully closed, thereby end process (square 66).

If first test section 17a fails to detect closing of refrigerating chamber 5, then owing to can be judged as and continuing half-open door state, promptly 24 energisings make swivel plate 19 close the action (square 64) of refrigerating chamber 5 to the rotation of CW direction to motor so repeat repeatedly to carry out from square 58 to square 63 processing.If the number of times that repeats to stipulate, for example behind three these closing motions, first test section 17a also fails to detect to close, and for example is judged to be to be clamped by something and can not close refrigerating chamber 5, notifying operator 70 piped user's (square 65) is informed in the alarm that is in half-open door.

Have again, open switch 8 and open the phenomenon that refrigerating chamber 5 is run into child's health etc. in order to prevent that the mistake of child for example from pushing, also can make the structure that can set as follows: thus the user can select to make the exercise void of opening switch not carry out the opening action of explanation refrigerating chamber 5 among Figure 10, and only carry out closing motion shown in Figure 11.

Describe enlarging stroke with quaternary structure.

Above-mentioned explanation the mode that three drive pins 20 are set on swivel plate 19 is illustrated, but drive pin 20 is not limited to three, describes in Figure 12.Figure 12 is illustrated on the swivel plate 19 from driving shaft 18 to (＞r3) position is provided with 4 wheel driven untie-sell 20d apart from r4.On web 16, be provided with the 4th bearing plane 21d that is used for butt 4 wheel driven untie-sell 20d.

When opening the action of refrigerating chamber 5, carry out and same action shown in Figure 6, and because 4 wheel driven untie-sell 20d pushes the 4th bearing plane 21d to the diagram left, so that web 16 is subjected to from the scope of the power of swivel plate 19 is extended.In addition, because r4＞r3, so if the rotating speed of driving shaft 18 is fixed, then 4 wheel driven untie-sell 20d compares with the occasion that does not have 4 wheel driven untie-sell 20d and can strengthen r4/r3 to illustrating the speed that left pushes the 4th bearing plane 21d.As described above, because the scope of power and speed both sides enlarge,,, push the reaction of opening the opening action behind the switch 8 and improve, thereby can obtain comfortable operation sense from the user so the opening of refrigerating chamber 5 increases when opening refrigerating chamber 5.

And, swivel plate 19 is equally being moved web 16 and when closing refrigerating chamber 5 to arrow 36 directions to arrow C W direction rotation and with illustrated in fig. 7, though 4 wheel driven untie-sell 20d pushes the 4th bearing plane 21d, because 4 wheel driven untie-sell 21d self-powered moving axis 18 is bigger than the 3rd drive pin 21c apart from r4, so, also can close refrigerating chamber 5 even the opening 35 of web 16 only strengthens r4/r3.Like this, can enlarge the opening 35 that to close from half-open door state,, realize to prevent the intrusion deterioration of stored food energy-conservation the time because of extraneous gas so, also can close refrigerating chamber 5 more reliably even half-open door takes place.

Actual installation to door drive describes.

Secondly, the structure of below using Figure 14-Figure 17 explanation that the door drive 10 shown in Figure 12 (implementing the stroke of quaternary structure) is assembled in the rotation driving body in the refrigerator and links parts.In addition, Figure 12 is the figure of action that is used to illustrate the door drive of relevant present embodiment, and Figure 14-Figure 17 is the figure of the concrete structure of the expression occasion that door drive is applied to actual refrigerator.Figure 14-Figure 17 represents up and down conversely with Figure 12 on accompanying drawing.

In the drawings, driving mechanism, 18 expression driving shafts, 19 expressions that 10 expression door drives, 15 expressions are installed in refrigerating chamber diapire side utilize above-mentioned driving shaft 18 and the swivel plate of rotation, as shown in the figure, on this swivel plate 19, be provided with as the drive pin 20 (20a... first drive pin, 20b... second drive pin, 20c... the 3rd drive pin, the untie-sell of 20d... 4 wheel driven) that enlarges the drive transmission member of stroke with quaternary structure.

And, the distance between these drive pins 20a, 20b, 20c, 20d and the drive pin 18 as top illustrated.In addition, as shown in figure 16, the short transverse H size of this drive pin 20a, 20d is made than about 2 times of the big height of height dimension of drive pin 20b, 20c.In other words, it is different and in bearing plane 21b, the 21c of the web 16 of drive pin 20a, 20d institute butt size or not that drive pin 20b, 20c do the butt position of the above-mentioned short transverse of the origin cause of formation.

Like this, if between swivel plate 19 and web 16, take place unusually, can prevent that also nip bearing plane 21a swivel plate 19 and web 16 of drive pin 20b is braked.Equally, because of the butt position difference of above-mentioned short transverse, can prevent the drive pin 20c bearing plane 21d that nips.

95 are arranged on the magnet on the swivel plate 19, and this magnet 95 utilizes driving shaft 18 with not shown testing agency and the initial point of swivel plate 19 of rotation is looked for the position.Detect for example mid point portion of former point range 40 shown in Figure 8, have the function same, be suitable for replacing this mechanism 32 with rotation testing agency shown in Figure 5 32.That is, the swivel plate 19 that drives by driving shaft 18, as explanation just now like that, in rotation after the position shown in Figure 15 of being everlasting stop, even for example in the occasion of power failure, also can with web 16 uninterruptedly in advance with manually coming shutter door.Therefore, stop in the position of magnet 95 (position shown in Figure 15 (former point range is with reference to Fig. 8)).In other words, the stall of driving shaft 18 is controlled by the Hall IC of narrating later.

96 are arranged on the guide on the bedplate 15a that forms driving mechanism 15.This guide 96 is made and is arranged side by side two tab 96a, 96b, and the opening of entrance side is compared with other place, forms as Figure 14 and Figure 15 broadlyer.This is to enter guide 96 easily for the sliding part 16a (with reference to Figure 17) that makes web 16.That is, because web 16 is installed in drawer door one side, the scale error of refrigerator main body one side is subjected to the influence of assembly error naturally, is equipped with the scale error of drawer door one side of web 16, the influence of assembly error certainly.Therefore, skew about the position of the sliding part 16a that slides in guide 96 earlier often produces.Even if this error is arranged, the sliding part 16a of web 16 enters guide 96 at an easy rate.

In addition, on the tab 96b of guide 96, be provided with two Hall IC 97,98.This Hall IC 97,98 detect magnet 99,100 on the sliding part 16a that is arranged on web 16 near or deviate from going forward side by side action and do, make driving shaft 18 stalls that drive swivel plate 19.In addition, what be arranged in illustrated embodiment that magnet on the web 16 represents is the example of two magnet of corresponding configuration with the interval of Hall IC 97,98, but be not limited to this, can be a tabular magnet of the gap length of corresponding Hall IC 97,98, also can be the insertion position of the fore-end of corresponding tabular magnet, Hall IC 97,98 be only connected 98, is connected the element of 97 and 98,97 and 98 actions that disconnect.

That is, with the magnet 99,100 of web 16 sides together Hall IC 97 door that detects refrigerating chambers 5 whether close fully, whether the opening that Hall IC 98 detects the door of refrigerating chambers 5 is the opening (for example shown in Fig. 7 (a) below 35) of regulation.That is, as shown in figure 16, magnet 99,100 and Hall IC 97 and Hall 98 are buttoned-up status when relative, and magnet 99 is half-open door state (for example opening 35) between Hall IC 97 and Hall 98 time.In addition, under buttoned-up status, the door of refrigerating chamber 5 is in standby usually.

Swivel plate 19 in the structure example of the present embodiment of Figure 14-shown in Figure 17 and web 16 utilize and are used in quaternary structure illustrated in fig. 12 and enlarge the identical main points of the structure of stroke and move respectively.And the structure dissimilarity of this structure example and Figure 12 is, at first a bearing plane 21a butt, the first drive pin 20a.That is, because it is different with second its height dimension of drive pin 20b to constitute the first drive pin 20a, the second drive pin 20b reaches the structure of the first bearing plane 21a.Specifically, first and the height height of 4 wheel driven untie- sell 20a, 20d, the height of the second and the 3rd drive pin 20b, 20c is low, the first bearing plane 21a form the portion that hangs down in case only with the first drive pin 20a butt, the second and the 3rd drive pin is not with the portion that the hangs down butt of bearing plane 21a but pass.The length of the portion that hangs down of the second and the 3rd bearing plane 21b, its bearing plane separately of 21c forms longlyer, so that the second and the 3rd highly low drive pin can butt.

In the structure of each above-mentioned drive pin and bearing plane, when opening refrigerating chamber, carry out occasion in the time of with manual unlocking as the abnormal operation with electronic the opening of pushing button 88, if do not adopt the structure example of above-mentioned present embodiment, first drive pin is butt first bearing plane and pass through (web 16 advances in advance because of hand operated) second drive pin butt first bearing plane 21a not, interact with the constructional matching relationship of other drive pins and bearing plane, web 16 and swivel plate 19 are in on-position, the situation that the opening action of generation refrigerating chamber can not carry out.Therefore, if adopt the configuration example of above-mentioned present embodiment, owing to second drive pin, the 3rd drive pin pass the first bearing plane 21a, so web 16 and swivel plate 19 can not be in on-position.

Another bigger difference is, forms guide 96, and establishes by two Hall IC 97,98 on the tab 96b that forms this guide 96.Promptly, these two Hall IC 97,98 are utilized the position relation with the magnet 99,100 that is arranged on web 16 sides, carry out the opening action of refrigerating chamber 5 reliably, and, even refrigerating chamber 5 is in the half-open door state of not closing fully, also can be by making swivel plate 19 to the direction rotation opposite with the occasion of opening refrigerating chamber 5, the power that web 16 is applied the direction of closing refrigerating chamber 5 can be closed it, so, prevent that half-open Men Bingke is prevented cooling performance and reduces or energy-conservation effect.

Certainly, the face that reverses 22 of this web 16 utilizes main points illustrated in fig. 7, utilizes 4 wheel driven untie-sell 20d to the direction pushing of closing door.In addition, the face that reverses 22 shown in Figure 15 carries out well for the action that makes drive pin 20d this moment, can make the following inclined plane of 45 degree (face 22 that reverses in Figure 15 forms the circular-arc face that the vertical line up and down with respect to drawing is tilted to the left) in advance.

In addition, drive unit 15 usefulness bolts etc. are fixed on the casing side that constitutes refrigerating chamber 5.Therefore, when pulling out the door of refrigerating chamber, swivel plate 19 is stayed the casing side certainly.On the other hand, the web 16 that is installed in refrigerating chamber one side is pulled out with door.When this door was pulled out, the matching relationship of Shuo Ming swivel plate 19 and web 16 was disengaged certainly just now.In other words, the installation constitution of above-mentioned swivel plate 19 and web 16 accounts for very important component.

For this reason, in the present embodiment, when guaranteeing that integral production is equipped with the size of the base member 15a (with reference to Figure 15) of swivel plate 19 and guide 96, the gathering sill width dimensions that forms between tab 96a, the 96b of guide 96 is made the wall thickness of the sliding part 16a that approaches web 16 sides, thereby guarantee both installation sites of swivel plate 19 and web 16 and make the size relationship stabilisation.Have again, web 16 is installed in door one side and the deviation that forms, deal with by the amount of lap (whole laps of above-below direction in the drawing of Figure 17) of fully guaranteeing tab 96a, 96b and sliding part 16a in advance to the size up and down of casing.

The braking detection method is described.

Just now narration was, when closing a body 5a, do not need to be pulled away from the power of magnetic seal spare 14, and produce the introducing power of closure member 13, so, the power of closing is compared with tensile force, is that more weak power is just enough, is closing the occasion of body 5a, by reducing auxiliary voltage to motor 24, even and refrigerator main body 1 between clamp finger etc. occasion, chucking power is also little, thereby improves security.

But, in flow chart shown in Figure 11, though what adopt is with motor 24 energisings in the square 58 that will carry out closing motion, and make swivel plate 19 to CW direction low speed rotation, in square 59, wait for the structure of stipulated time, but during this stipulated time, continue the power of closing, so accompany the occasion of thing or finger, detect this situation and stop motor 24 etc. immediately, security is higher.As this judgement that stops, can being judged as, promptly because web 16 and door body 5a interlock action, and swivel plate 19 action with web 16 butts the time, when the result was braked at swivel plate 19, a door body 5a stopped because of some reason.

Use Figure 21-Figure 26 that the concrete grammar that the braking of swivel plate 19 detects is described.Figure 21 is the block diagram of expression control circuit 41 contents.Here, the object lesson as motor 24 adopts dc motor 24a.41a is that the microcomputer, the 41b that control are that driver IC, the 41c that makes dc motor 24a rotating and can change output voltage is the current detection circuit that detects the electric current that flows in dc motor 24a.In addition, the front end at dc motor 24a is connected with driven wheel 30 and swivel plate 19.

Figure 22 is the fundamental characteristics figure (longitudinal axis is represented motor speed and motor current) of common dc motor, and the dc motor 24a of present embodiment too.Rotating speed is the highest when load torque is zero, and the rotating speed of this moment is called zero load rotating speed, and when load torque was higher than setting, rotating speed was zero to be motor brake, and the torque of this moment is called stalling torque.In addition, motor voltage is low more, and zero load rotating speed and stalling torque are more little.For electric current, though with the proportional relation of load torque, electric current during motor brake (stalling current) is different because of motor voltage.Motor brake electric current=I2 when motor brake electric current=I1 during motor voltage=E1, motor voltage=E2.

The judgement of whether braking for swivel plate 19 in the process that drives dc motor 24a, is judged as swivel plate 19 brakings from the motor current detected value of current detection circuit 41c at the state continuance of motor current detected value 〉=brake value after the stipulated time.From the figure of Figure 22 as can be known, the characteristic of having utilized motor brake (rotating speed is zero) after-current to uprise.

Time diagram with Figure 23 is represented, move as follows, promptly, in (1), driver IC 41b accepts signal from microcomputer 41a to the additional assigned voltage of dc motor 24a, in (2), at door body 5a when stopping with certain reason, then swivel plate 19 brakings, just the electric current of dc motor 24 uprises, and in the moment (3) after the higher state continuance t1 time, making auxiliary voltage is zero than the braking judgment value of illustrated dotted line.In addition, carry out the motor current value of the occasion (occasion that swivel plate 19 can normally rotate) of normal closing motion, for fear of false judgment, certainly must be lower than the braking judgment value.

In addition, flowcharting shown in Figure 24 will be braked detection method and be packed in the control of common closing motion.This is that the flow chart of relative Figure 11 changes to the figure that braking is judged with square 59 parts.

In square 58, in motor when energising,, if a door body 5a normally closes, then swivel plate 19 brakings are judged as braking in square 59, do not carry out required above motor constantly from Figure 23 of being judged as braking (3) and switch on.In addition,, in square 59, brake judgement, from Figure 23 (3) constantly, finish the energising of closing direction at once, can become safe closing motion accompanying the occasion that object etc. is not normally closed.In addition, also can replace energising and finish (disconnecting auxiliary voltage) and make releasing from braking to the auxiliary voltage of motor that lower and wait for, remove the back in the braking main cause and continue closing motion to motor.

In addition, this braking is judged applicable to all occasions that makes swivel plate 19 rotations etc. of being not only closing motion and opening action etc.For example, when carrying out opening action, the situation that has door body 5a such as object to open before door body 5a is judged turn-off current immediately by braking, thereby can be improved security.But as mentioned above, when opening action and closing motion, the auxiliary voltage additional to dc motor 24a changes.This situation is that the current value after dc motor 24a is braked is different as shown in figure 22 after swivel plate 19 is braked.So as shown in figure 25, it is effective that the corresponding auxiliary voltage that applies to motor changes the braking judgment value.

In addition, also has other aspect that should note.In order to prevent breakage from external force, (for example on driving mechanism 15, be provided with torque limit mechanism 31 (with reference to Fig. 5), in the occasion that driving mechanism is applied by force unwanted power, if there is not torque limit mechanism, the situation that then has the gear destruction of reducing gear, if torque limit mechanism is arranged, then be that this mechanism's slip absorbs unwanted power).Torque limit mechanism 31 can be described as by the torque (power) from the outside and reach that setting slides when above and mechanism that restriction is set on want torque transmitted.

With the relation torque limit mechanism role of swivel plate 19 and dc motor 24a, as shown in Figure 26.The longitudinal axis of Figure 26 is represented motor speed and motor current, motor speed maximum when the swivel plate load torque is zero, and motor current is minimum.Along with the increase of swivel plate load torque, motor current increases, and for the load more than the torque limit value, motor current is fixed value I3 after it, and torque limit mechanism slides.

In the scope of the load torque that imposes on swivel plate 19 above the torque limiting value, the load torque that imposes on dc motor 24a also is restricted to fixing.Therefore, as shown in figure 26, in the scope that surpasses torque limit value, motor speed non-vanishing (not braking), motor current value can not increase more than this for fixed value yet.Just set to such an extent that then cause to brake judgement than I3 height if will brake judgment value.Therefore, in the occasion that torque limit mechanism 31 is set, below the relation of each value must set up the motor current value the during motor current value when promptly torque limit mechanism 31 works＞braking judgment value＞regular event.

Action to last hypomere describes.

Action to the occasion of door drive that present embodiment is set refrigerating chamber 5 and vegetable compartment 6 both sides describes.Here as shown in Figure 2, vegetable compartment 6 is positioned near the bottom surface of hypomere, and section is provided with refrigerating chamber 5 thereon.

When refrigerating chamber 5 is opened in the front that the user stand in refrigerator 1, if in for example 15cm-20cm degree, then can see that the inside of refrigerator is good from peristome owing to opening with the electronic amount of opening refrigerating chamber 5.On the other hand, for vegetable compartment 6, because vegetable compartment 6 is positioned near the floor, if similarly open with refrigerating chamber, the student of vegetable compartment 6 end might be run into user's tiptoe when then opening.

Student's end of vegetable compartment 6 is run into user's tiptoe in order to prevent to open, opening speed when the vegetable compartment 6 of wishing to be positioned at hypomere for the consideration of secure context is compared with the refrigerating chamber 5 that is positioned at epimere and opened is low, and opening for example is decreased in the 10cm.In addition, in the above description, be that vegetable compartment is positioned at the refrigerating chamber hypomere and describes, but wish also that in the occasion that refrigerating chamber is positioned at the vegetable compartment hypomere opening of refrigerating chamber and opening speed are littler than vegetable compartment.

Effect and effect are described.

According to the present invention, have the tensile force of the drawer door that can reduce refrigerator and open trippingly door time, automatically close door from the half-open door of what is called state, improve the effect of energy-saving effect.

Promptly, when closed condition begins to open refrigerating chamber 5, push web 16 with its driving by being configured in from the driving shaft 18 first nearest drive pin 20a, be pulled away from magnetic seal spare with the bigger power of low speed output, then by being arranged on second drive pin 20b pushing web 16 at a distance than the first drive pin 20a, drive with the moderate moderate power of speed output, the drawing of opposing closure member 31 continues opening action and refrigerating chamber 5 quickened as going into power, then, be arranged on than the second drive pin 20b apart from driving shaft 18 the 3rd drive pin 20c pushing web 16 at a distance, though power is little by can further quickening refrigerating chamber 5 with high-speed driving, so, all right owing to the opening action that carries out refrigerating chamber 5 reliably, have the effect that can carry out opening action reliably.

And, even when the so-called half-open door state that is in that refrigerating chamber 5 do not close fully, by making swivel plate 19, can apply the power of closing refrigerating chamber 5 directions to web 16 it is closed, so prevent half-open door and obtain energy-saving effect to the direction rotation opposite with the occasion of opening refrigerating chamber 5.By repeatedly repeating above-mentioned closing motion, can obtain reliably to prevent the effect of half-open door.And, if it is littler than thickness gate 71 to begin to close the opening 35 of refrigerating chamber, owing to can not clamp finger etc., so have safe effect.

Using the occasion that manually opens and closes, since in the door open/close machine of present embodiment be arranged on the refrigerator main body driving mechanism with do not contact with web that drawer door is wholely set, so manual activity of user when not hindering drawer to open and close, can not produce not smooth etc. the phenomenon of on-off action, so ease of use is good, in addition, even have the effect that also can not influence ease of use when contingency breaks down.

In addition, in the present embodiment, the accident of nipping of the drive pin of swivel plate one side when driving mechanism (swivel plate) and web cooperation (slip) can not take place, this can guarantee reliable combination by guide is set certainly.

In addition, have and make door drive avoid the protective device of external force, and have the occasion of occasion of closing door and opening action reliably inspected object clamped or conflicted, safe effect.

Application in others is described.

In the present embodiment, represented that door drive 10 is arranged on the example on the drawer door of refrigerating chamber 5 and vegetable compartment 6, but this enforcement side is not limited thereto, the structure that is arranged on the rotary door of refrigerating-chamber door 2 also can obtain same effect certainly.

In addition, present embodiment is illustrated the structure that possesses door drive on refrigerator, but be not limited to refrigerator, also can be applicable to for example to preserve the file cabinet of file or pull out the drawer type machines such as dishwashing detergent drying machine of the tank embedded type of use to the front, obviously this occasion also have with present embodiment in the illustrated same effect of effect.

In the present embodiment, represented the example that driving mechanism 15 only is made of spur gear, but be not limited to spur gear, also can be practical the structure of worm gear.Have, drive pin 20 also can not be a pin cylindraceous as the present embodiment again, but revolving roller.

Claims (7)

1. a refrigerator possesses: the drawer door of mounting on the slide rail that moves along fore-and-aft direction freely; With the available electronic door drive that opens or closes above-mentioned drawer door, it is characterized in that,

Above-mentioned door drive possesses: as the motor of drive source; The reducing gear that the rotation of above-mentioned motor is slowed down; With the rotating output shaft that slows down by above-mentioned reducing gear rotatably with the rotation driving body of axle supporting; And be arranged to and can move and at the binding parts that contact with above-mentioned rotation driving body in the driving scope of opening of regulation with above-mentioned drawer door,

Above-mentioned rotation driving body is provided with a plurality of drive transmission member, and above-mentioned a plurality of drive transmission member are configured to apart from different from the pivot of above-mentioned rotation driving body,

Above-mentioned binding parts have each the corresponding a plurality of bearing plane with above-mentioned a plurality of drive transmission member,

Promptly open direction when rotation at above-mentioned rotation driving body to the direction of opening above-mentioned drawer door, then apart from nearest first drive transmission member of the pivot of above-mentioned rotation driving body and the first bearing plane butt of above-mentioned binding parts, be accompanied by above-mentioned rotation driving body to the rotation of opening direction, be configured in second bearing plane of being far apart the above-mentioned binding parts of the second drive transmission member butt of above-mentioned pivot position than first drive transmission member, repeat above-mentioned butt successively, be configured in bearing plane away from the pairing above-mentioned binding parts of the last butt of drive transmission member farthest of above-mentioned pivot position, thereby begin to drive above-mentioned binding parts, behind the above-mentioned last butt, above-mentioned rotation driving body is removed above-mentioned the contact with above-mentioned binding parts

Has the current detecting mechanism of detecting the electric current that flows to above-mentioned motor, the judgement of whether braking as above-mentioned rotation driving body and set motor current braking judgment value, occasion more than the electric current braking judgment value that is above-mentioned motor by the detected motor current detected value of above-mentioned current detecting mechanism makes to the additional auxiliary voltage of above-mentioned motor to disconnect or reduction.

2. refrigerator according to claim 1 is characterized in that,

Detecting above-mentioned drawer door with the position probing of above-mentioned linking part spare is half-open door state for buttoned-up status not, makes above-mentioned rotation driving body to the direction rotation of closing above-mentioned drawer door by above-mentioned detection,

Utilize the above-mentioned drive transmission member farthest of above-mentioned rotation driving body, above-mentioned binding parts are driven to the direction of closing above-mentioned drawer door.

3. refrigerator according to claim 1 and 2 is characterized in that,

According to change above-mentioned motor current braking judgment value to the additional auxiliary voltage of above-mentioned motor.

4. refrigerator according to claim 1 and 2 is characterized in that,

Between above-mentioned driving body and above-mentioned motor, have institute's torque transmitted is limited in torque limit mechanism below the setting.

5. refrigerator according to claim 1 and 2 is characterized in that,

When above-mentioned torque limit mechanism action, the motor current value (1) that detects by above-mentioned current detecting mechanism, be failure to actuate with torque limit mechanism in advance and the motor current value (2) the during rotation of above-mentioned rotation driving body, and the pass of above-mentioned motor current braking judgment value be:

Motor current value (1)＞braking judgment value＞motor current value (2).

6. refrigerator according to claim 1 and 2 is characterized in that,

The length dimension separately towards the direction of above-mentioned binding parts of above-mentioned first drive transmission member and above-mentioned second driver part is different,

Above-mentioned second drive transmission member is corresponding to above-mentioned first bearing plane of the above-mentioned binding parts of above-mentioned first drive transmission member butt not.

7. refrigerator possesses: the drawer door that moves at fore-and-aft direction; With with electronic or manual unlocking or close the door drive of above-mentioned drawer door, it is characterized in that,

Above-mentioned door drive have motor, by above-mentioned motor rotate driving rotary body, contact the web that moves with above-mentioned rotary body,

On above-mentioned rotary body, be provided with the above-mentioned web of cooperating with above-mentioned drawer door relatively and open or close a plurality of drive divisions that direction drives, and corresponding with above-mentioned a plurality of drive divisions respectively a plurality of bearing plane are set on above-mentioned web to above-mentioned,

According to each configuration structure of above-mentioned a plurality of drive divisions, drive above-mentioned web with the order of low speed and big power, middling speed and medium power, high speed and little power,

Detect the half-open door state of above-mentioned drawer door, and, utilize above-mentioned rotary body to drive above-mentioned web to the direction of closing above-mentioned drawer door based on above-mentioned half-open door status detection,

The determinating reference that whether is in the on-position that can not rotate with the driving of above-mentioned motor as above-mentioned rotary body is set motor current braking judgment value, motor current detected value in flowing in above-mentioned motor is the occasion more than the motor current braking judgment value, makes to the additional auxiliary voltage of above-mentioned motor to disconnect or reduction.

Images