The extraction structure of coffee machine
Technical field
The present invention relates to a kind of coffee machine that adopts coffee capsule, relate in particular to the parts drives structure of the coffee machine that a kind of parts that drive coffee machine move.
Background technology
Coffee machine is a kind of machine for preparing coffee beverage, the legacy device of coffee machine includes water pot, heating element heater and water pump etc., the capsule that will be equipped with coffee powder during use places in the coffee machine, during use, with drives structure two parts in the coffee machine are closed up again and form the extraction chamber, this moment, coffee capsule was positioned at the extraction chamber, again the water of heating is got in the extraction chamber with water pump during extraction, water flows through the coffee raw material that will extract, coffee beverage then flows to the cup from the outlet pipe of coffee machine, and it is to drive parts two parts to be closed up and be pressed against each other and close the extraction chamber that forms sealing that coffee machine extracts topmost step.
Drive two parts in the existing coffee machine and move with closure and the drives structure of opening two parts, and compress the thrust of closing up for two parts, mainly contain two kinds of forms:
A kind of is that handle and connecting rod drives compression type, be the Chinese invention patent " a kind of in order to prepare the device of beverage extracting substance " of ZL00812101.X (notification number is CN1263415Y) as a patent No., the patent No. is the Chinese utility model patent " a kind of device for preparing beverage extracting substance " of ZL200720108105.4 (notification number is CN201019552Y), they have all disclosed a kind of parts drives structure of handle and connecting rod formula, it comprises closed bar and two draw bars with both arms, two arms of closed bar are fixed on first pivot of the both sides that are positioned at described second parts and can rotate around it, and draw bar is fixed on second pivot of the both sides that are positioned at described first parts and can rotates around it.The end of two arms of draw bar and closed bar firmly fixes by the 3rd rotatable pivot is in the same place, so that co-operating makes the device closure and opens mutually.
Coupling mechanism force between two parts is provided by the support force between the bar linkage structure, and like this after two parts close up, because the coupling mechanism force of two parts is very big, as opening two parts again, needing more energetically could pulling handle, the operation effort; When the parts drives structure of handle and connecting rod formula is used in addition, all need upwards pull or press down handle, before placing coffee capsule, handle is upwards pulled angled, and the handle perk occupies bigger height, this coffee machine need be placed on the position with certain altitude space, could use, to coffee machine lay the space requirement height, use not hommization.
Another kind is hydraulic drive type, be a kind of hydraulic drive type drives structure the Chinese utility model patent " a kind of packet sending and falling structure of beverage brewing device " of ZL201020113007.1 (notification number is CN201617680U) has disclosed as a patent No., comprise on the rear wall of support interior holder is fixedly arranged, should have the back intake tunnel that axially runs through on the interior holder, the rear chamber that has open rearward end in described second parts, also internally holder front and back slippage mutually on the holder in the rear chamber of described second parts is movably set in, and in described between rear chamber's internal perisporium of outer peripheral face and second parts of holder for liquid sealing cooperates, also be provided with the liquid outlet channel of the cavity on the connection external world and described second parts on described second parts; Has interior omoplate in the pilot hole of described installation portion, also be arranged with back-moving spring on described each lead, one end of this back-moving spring is resisted against on the antetheca of support, the other end of back-moving spring is resisted against on the interior interior omoplate of described pilot hole, has on described first parts to be communicated with described space and the extraneous preceding intake tunnel brewageed.The locking of the movement of this mode parts and two parts all relies on hydraulic drives, length is equivalent to adopt the handle and connecting rod structure will grow much apart from institute's time to utilize the hydraulic drives parts to move, so the time that coffee of the every preparation of the coffee machine of this mode will spend is longer.
In sum, the extraction structure of existing coffee machine all can be further improved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of extraction structure with bar linkage structure and the fine coffee machine that combines of hydraulic drives at above-mentioned prior art present situation, it closes up two parts and locks institute's time weak point, and can guarantee that two parts form good sealing.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of extraction structure of coffee machine, comprise pedestal, be provided with first parts and second parts that are provided with intake tunnel of exhalant canal, first parts are fixed on the front end of pedestal, have on second parts in order to hold the containing cavity of coffee capsule, second parts constrain in the pedestal and slippage before and after the energy, the top of pedestal is provided with the capsule entrance, it is characterized in that: fixedly there is the holder with cavity at the rear portion of described pedestal, be provided with the piston of energy front and back slippage in the cavity of holder, be provided with sealing ring between the periphery wall of piston and the internal perisporium of described cavity, form intake antrum between piston rear end and the cavity, intake antrum communicates with the external world by cold water channel; Being provided with the connecting rod drives structure between described piston and second parts moves forward and backward with first parts and closes up or separate in order to drive second parts.
Above-mentioned connecting rod drives structure comprises push pedal, drive rod, first drive link and second drive link, the end face pedestal front and back slippage relatively of pedestal is located in described push pedal, the upper end of described drive rod is rotatably connected on the bottom surface of push pedal, the front end of described first drive link is rotatably connected on the rear end of second parts, the rear end of described second drive link directly or indirectly is rotatably connected on the described piston, and the rear end of the lower end of described drive rod, first drive link and the front end of second drive link are movably set on the same power transmission shaft.This connecting rod drives structure is under the horizontal effect of passing in the front and back of push pedal, push pedal is connected with second parts and piston by specially designed bar linkage structure, to drive the relative pedestal front and back slippage of second parts, because the action of push pedal is horizontal passing, to pull the horizontal movement that realizes second parts by spinning upside down of handle different with connecting rod drives structure in the conventional coffee machine, push pedal can not be upturned in the course of the work, the height that need not additionally to take up space, easy to operate, even adopt the coffee machine of this drives structure also can normally use in being placed between the grid that height space reduces, the adaptability of use is stronger.
For making the push pedal slippage more steady, and promote more laborsaving, fixedly there is wheel frame the lower end of above-mentioned push pedal, guide wheel is housed on the wheel frame, the interior top of described pedestal each side is provided with an axis of guide, race on the described guide wheel contacts with the axis of guide, and the upper end of described drive rod is rotatably connected on the wheel frame by the pivot of self.Spacing with contacting of the axis of guide by the guide wheel that is positioned on the wheel frame, can prevent that thrust plate rocks in slipping, simultaneously in the push pedal slipping, contact for rolling between guide wheel and the axis of guide, make the push pedal slippage lighter laborsaving.
Magnet before the front end of above-mentioned wheel frame is embedded with first, the front portion of pedestal are embedded with and the described first preceding magnet corresponding second preceding magnet; The rear end of described wheel frame is embedded with the first back magnet, and the rear portion of pedestal is embedded with and the corresponding second back magnet of the described first back magnet; Driving second parts in push pedal moves forward under the state with the first parts closure, magnet and the second preceding magnet hold mutually before described first, after push pedal drives second parts, move under the state that first parts and second parts open fully, the described first back magnet with second afterwards magnet hold mutually.Move forward and backward to two limiting conditions in push pedal, by the attraction of forward and backward magnet, produce prompting sound, point out us to move into place, the feel in the time of also can strengthening push pedal and move.
Above-mentioned push pedal is moving forward under first parts and the second parts closure state and described capsule entrance can covered, described push pedal after move under first parts and the second parts full open position and open described capsule entrance.Coffee machine does not have the time of use, and push pedal is covered the capsule entrance and prevented that dust or foreign matter from entering coffee machine inside, pollutes or damage coffee machine internal works, uses safer health.
Improve further, said base comprises frame and shell; Described frame then comprise front shoe, rear fixed plate and be supported on front shoe and rear fixed plate between and two leads arranging of left and right sides parallel interval; The lead activity is passed the described shell left and right sides and is made the relative front and back slippage with the frame energy of shell; Respectively be arranged with support spring on described two leads, support spring is supported between the front end face of front shoe and shell; Described capsule entrance is arranged on the shell, and first parts are fixed on the front shoe, the left and right sides of second parts be set on the corresponding lead and can before and after slippage, push pedal is located on the upper surface of shell; Described holder is fixed on the rear fixed plate, and described cold water channel is arranged on the piston.
At first second parts close up with first parts under the bar linkage structure effect, then high-pressure cold water enters intake antrum from cold water channel, the reach of piston relative fixed seat, because holder is fixed on the frame, the relative coffee machine housing of enclosure location is fixed, therefore the frame support force that overcomes support spring can move after the whole opposite shell, first parts also move after the opposite shell, first parts and second parts are compressed under the hydraulic pressure effect mutually, form airtight extraction chamber, the direction of motion of closing up with locking process pedestal is two-way relative, and form is more novel, and the traditional coffee machine base is can relative motion.
Rear portion in the above-mentioned shell is provided with mounting blocks, and the left and right sides of this mounting blocks is set on the described lead, and the rear end face of mounting blocks contacts with the outer face of described piston, and the rear end of described second drive link is rotatably connected on the mounting blocks by the hinge portion of its both sides; This designs simplification piston structure is convenient to assembling, certainly also can be directly the rear end of second drive link directly be rotatably connected on the outer face of piston.Described first drive link has two, and the front end of each first drive link is rotatably connected on the back of second parts by first rotating shaft, and the rear end of each first drive link is set on the described power transmission shaft; The front end of described second drive link has two two arms that extend forward, and the front end sleeve of these two arms is located on the described power transmission shaft; The lower end of described drive rod is between described two arms, and described two first drive links lay respectively at the outside of described two arms, and the two ends, the left and right sides of described power transmission shaft are provided with jump ring and with first drive link, second drive link and drive rod axial constraint.Arrange two first drive links can be more steady the reach of promotion second parts, and second drive link has two arms, drive rods to be positioned at center position, drive rod can steadily drive first drive link and the action of second drive link.
The rear portion of above-mentioned second parts has inner fovea part, the front end of described first drive link is rotatably connected on the inboard of inner fovea part by first rotating shaft, driving second parts in push pedal moves forward under the state with the first parts closure, the lower surface of described first drive link contacts with the bottom surface of inner fovea part, stop first drive link to continue to deflect down, the axis of described first drive link and second drive link is mutually the obtuse angle simultaneously, form a self-locking angle, after the frame opposite shell, move past in the journey, the end that is rotationally connected each other of first drive link and second drive link can not be upturned under external force, guarantees that first parts and second parts can be pressed in together.
Above-mentioned shell front part sides is rotatably connected to the two vertical clamping plate that arrange, these two clamping plate are positioned at the left and right sides of capsule entrance, the inner face of each clamping plate has the draw-in groove of vertical setting, the bottom surface of draw-in groove is that inside inclined downward is shelved for the annular edge edge of coffee capsule, the place of being rotationally connected of each clamping plate is provided with the torsion spring that makes clamping plate keep vertical trend, the inner face of described each clamping plate has lead-in chamfered, the outer peripheral face of second parts is pre-small post-large taper surface, move at second parts under the outer peripheral face and lead-in chamfered state of contact of second parts, described second parts promote clamping plate and open outward.Clamping plate at first play has clamping action to coffee capsule, guarantee that coffee capsule remains on the operating position, in addition after first parts and second parts close up, the outer Zhang Rangwei of clamping plate guarantees that coffee capsule enters in the extraction chamber fully, and after extraction finishes, move past in the journey behind second parts, the annular edge of coffee capsule along meeting by the front end face bumping post of clamping plate, coffee capsule can not move always with second parts, coffee capsule remains on original-pack package location, break away from the containing cavity of second parts fully when coffee capsule after, coffee capsule drops in position, clamping plate is set guarantees the smooth dress bag of coffee capsule and substitute.
The front part sides of above-mentioned shell has the axial region that extends forward, the upper end of described clamping plate has two and extends upward and connecting portion that front and back arrange at interval, connecting portion is provided with perforation, described axial region passes described perforation, described torsion spring set is located on the axial region and between two connecting portions, the inner of torsion spring is resisted against on the shell, and the outer end of torsion spring is compressed on the outside of clamping plate.It is rotatably connected on concrete structure on the shell for a kind of with clamping plate, and this structure provides suitable installation position to torsion spring, and torsion spring constrains between two connecting portions simultaneously, and torsion spring is had position-limiting action.
Compared with prior art, the invention has the advantages that: at first second parts move forward under the effect of connecting rod drives structure and close up with first parts, then high-pressure cold water enters intake antrum from cold water channel, the relative pedestal reach of piston, first parts and second parts are clamped mutually, form airtight extraction chamber, because the locking of first parts and second parts does not provide by the support force that the connecting rod drives structure forms, that is to say that the connecting rod drives structure only plays drives second parts and moves to and come close to or in contact with first parts and get final product, the connecting rod drives structure need not additionally to overcome the stronger coupling mechanism force that the connecting rod drives structure is brought in course of action, so make this extraction structure rapid operation in driving the parts moving process, after extraction is finished, hydraulic pressure sheds, remove the coupling mechanism force between first parts and second parts, but just easy manipulation connecting rod drives structure is separated from each other first parts and second parts.
Description of drawings
Fig. 1 is the perspective view (first parts and the second parts open mode) of the embodiment of the invention;
Fig. 2 is the cutaway view (first parts and the second parts open mode) of the embodiment of the invention;
Fig. 3 is the perspective view (second parts move to intermediateness) of the embodiment of the invention;
Fig. 4 is the cutaway view (second parts move to intermediateness) of the embodiment of the invention;
Fig. 5 is the perspective view (first parts and second parts close up state) of the embodiment of the invention;
Fig. 6 is the cutaway view (first parts and second parts close up state) of the embodiment of the invention;
Fig. 7 removes perspective view after the push pedal for the embodiment of the invention;
Fig. 8 removes perspective view behind push pedal, shell and the wheel frame for the embodiment of the invention;
Fig. 9 is the perspective view of second drive link in the embodiment of the invention;
Figure 10 is the perspective view one under the embodiment of the invention coffee capsule dress bag state;
Figure 11 is the perspective view two under the embodiment of the invention coffee capsule dress bag state;
Figure 12 is substitute perspective view under the state of embodiment of the invention coffee capsule;
Figure 13 is the perspective view of embodiment of the invention middle clamp plate.
The specific embodiment
Describe in further detail below in conjunction with the present invention of accompanying drawing embodiment.
Shown in Fig. 1~13, be a preferred embodiment of the present invention.
A kind of parts drives structure of coffee machine, comprise pedestal 1, be provided with first parts 2 of exhalant canal 21 and be provided with second parts 3 in order to the intake tunnel 31 that advances hot water, be provided with first check valve assembly 211 in the exhalant canal 21, be provided with second check valve assembly 311 in the intake tunnel 31.
Pedestal in the present embodiment comprises frame 11 and shell 12 two parts; 11 of frames comprise front shoe 111, rear fixed plate 112 and be supported on front shoe 111 and rear fixed plate 112 between and two leads 113 arranging of left and right sides parallel interval; Shell 12 is rectangular-shaped plastic casing substantially for hollow, and the front portion of shell 12 tops is provided with the capsule entrance 121 of packing into for capsule 18, and shell 12 left and right sides are passed in lead 113 activities makes shell 12 and the frame 11 can relative front and back slippage; Respectively be arranged with support spring 114 on two leads 113, support spring 114 is supported between the front end face of front shoe 111 and shell 12; Holder 15 with cavity is fixedly arranged on the rear fixed plate 112, be provided with the piston 16 of energy front and back slippage in the cavity of holder 15, be provided with sealing ring 17 between the periphery wall of piston 16 and the internal perisporium of cavity, form intake antrum 151 between piston 16 rear ends and the cavity, intake antrum 151 communicates with the external world by cold water channel 161, and the cold water channel 161 in the present embodiment is arranged on the piston 16.
First parts 2 are fixed on the front shoe 111, the left and right sides of second parts 3 be set on the corresponding lead 113 and can before and after slippage, have the containing cavity 33 that holds coffee capsule 18 on second parts 3, and second parts 3 are positioned at shell 12, the upper surface of shell 12 is provided with the push pedal 4 of pedestal 1 front and back slippage relatively, push pedal 4 rectangularities tabular, push pedal 4 is moving forward under first parts 2 and second parts, 3 closure states and capsule entrance 121 can covered, push pedal 4 after move under first parts 2 and second parts, 3 full open position and open capsule entrance 121.
The bottom surface of push pedal 4 is rotatably connected to the drive rod 5 of vertical setting, the upper end of drive rod 5 is rotatably connected on the wheel frame 9 by the pivot of self, the rear end of second parts 3 is rotatably connected to first drive link 6, the posterior rotation of pedestal 1 is connected with second drive link 7, the rear end of this second drive link 7 directly or indirectly is rotatably connected on the piston 16, rear portion in the shell 12 is provided with mounting blocks 17, the left and right sides of this mounting blocks 17 is set on the lead 113, the rear end face of mounting blocks 17 contacts with the outer face of piston 16, and the rear end of second drive link 7 is rotatably connected on the mounting blocks 17 by the hinge portion 71 of its both sides.The front end of the rear end of the lower end of drive rod 5, first drive link 6 and second drive link 7 is movably set on the same power transmission shaft 8.
First drive link 6 has two, and the front end of each first drive link 6 is rotatably connected on the back of second parts 3 by first rotating shaft 61, and the rear end of each first drive link 6 is set on the power transmission shaft 8; The front end of second drive link 7 has two two arms 72 that extend forward, and the front end sleeve of these two arms 72 is located on the power transmission shaft 8; The lower end of drive rod 5 is between two arms 72, and two first drive links 6 lay respectively at the outside of two arms 72, the two ends, the left and right sides of power transmission shaft 8 are provided with jump ring and with first drive link 6, second drive link 7 and drive rod 5 axial constraints, and jump ring does not show in drawing.
The rear portion of second parts 3 has inner fovea part 32, the front end of each first drive link 6 is rotatably connected on the inboard of inner fovea part 32 by first rotating shaft 61, driving second parts 3 in push pedal 4 moves forward under the state with first parts, 2 closures, the lower surface of first drive link 6 contacts with the bottom surface of inner fovea part 32, stop first drive link 6 to continue to deflect down, the axis of first drive link 6 and second drive link 7 is mutually obtuse angle alpha simultaneously.
Fixedly there is wheel frame 9 lower end of push pedal 7, wheel frame 9 is fixed on the below of push pedal 4 by screw, wheel frame 9 two guide wheel installation positions 92 are each side arranged, a guide wheel 91 respectively is installed in each guide wheel installation position 9, the interior top of pedestal 1 each side is provided with an axis of guide 10, and the race on the guide wheel 91 of each side contacts with the axis of guide 10 of respective side.Contact spacingly with the axis of guide 10 by more than one guide wheel 91, better anti-thrust plate 4 rocks in slipping, makes the push pedal slippage more easily laborsaving simultaneously.The number of guide wheel 91 can be set as required.Magnet 13a before the front end of wheel frame 9 is embedded with first, the middle part of shell 12 is embedded with and the first preceding magnet 13a corresponding second preceding magnet 13b; The rear end of wheel frame 9 is embedded with the first back magnet 14a, and the rear portion of shell 12 is embedded with the corresponding second back magnet 14b with the described first back magnet 14a; Driving second parts 3 in push pedal 4 moves forward under the state with first parts, 2 closures, magnet 13a and the second preceding magnet 13b hold mutually before first, move to after push pedal 4 drives second parts 3 under the state that first parts 2 and second parts 3 open fully, the first back magnet 14a and the second back magnet 14b hold mutually.
Shown in Figure 10~13, shell 12 front part sides are rotatably connected to the two vertical clamping plate 19 that arrange, these two clamping plate 19 are positioned at the left and right sides of capsule entrance 121, the inner face of each clamping plate 19 has the draw-in groove 191 of vertical setting, shelve along 181 for the annular edge of coffee capsule 18 for inside inclined downward the bottom surface 192 of draw-in groove 191, the annular edge 181 of 191 pairs of coffee capsules of draw-in groove is along the front and back barrier effect is arranged, the bottom surface 192 of draw-in groove 191 is designed to the inclined-plane in addition, playing has supporting role to the annular edge of coffee capsule along 181, and the folder mouth that therefore aforementioned clamping plate form can be firm is positioned at coffee capsule between the folder mouth that two clamping plate form.The place of being rotationally connected of each clamping plate 19 is provided with the torsion spring 20 that makes clamping plate 19 keep vertical trend, the inner face of each clamping plate 19 has lead-in chamfered 193, the outer peripheral face 34 of second parts 3 is pre-small post-large taper surface, move at second parts 3 under the outer peripheral face 34 and lead-in chamfered 193 state of contact of second parts, second parts 3 promote clamping plate 19 outer opening.
The front part sides of shell 12 has the axial region 122 that extends forward, the upper end of clamping plate 19 has two and extends upward and connecting portion 194 that front and back arrange at interval, connecting portion 194 is provided with perforation 195, axial region 122 passes described perforation 195, torsion spring 20 is set on the axial region 122 and between two connecting portions 194, the inner of torsion spring 20 is resisted against on the shell 12, and the outer end of torsion spring 20 is compressed on the outside of clamping plate 19.
Operation principle and the process of the parts drives structure of this coffee machine are as follows:
Send the capsule process: capsule 18 is packed into from capsule entrance 121, the annular edge 181 of coffee capsule is positioned at the clip slot 191 of clamping plate, and be shelved on the bottom surface 192 of draw-in groove 191, coffee capsule 18 is positioned, before push pedal 7, the upper end of the drive rod 5 of push pedal 7 belows is shown power transmission shaft 8 greatly and is fulcrum deflection forward, because the upper end of drive rod 5 is retrained by push pedal 7, in the process of drive rod 5 deflections, can drive power transmission shaft 8 relative push pedals moves down, power transmission shaft 8 can drive the rear end of first drive link 6 like this, the front end of second drive link 7 moves down, first drive link 6 and second drive link 7 are opened and the maintenance level outward gradually, and the rear end of second drive link 7 is mounted piece 17 constraints, and second drive link 7 can promote 2 reaches of second parts, 3 relative first parts, and coffee capsule 18 progresses in the cavity 32 of second parts 3 simultaneously.In the reach process of push pedal 4, move to when second parts 3 under the outer peripheral face 34 and lead-in chamfered 193 state of contact of second parts, second parts 3 promote clamping plate 19 outer Zhang Rangwei.Driving second parts 3 in the reach of push pedal 4 moves forward under the state with first parts, 2 closures, the annular edge of coffee capsule is along 181 the place aheads that move forward to the front end face of clamping plate 19, magnet 13a and the second preceding magnet 13b hold mutually before first, capsule entrance 121 is covered in push pedal 4, the lower surface of first drive link 6 contacts with the bottom surface of inner fovea part 32, stop first drive link 6 to continue to deflect down, the axis of first drive link 6 and second drive link 7 is mutually obtuse angle alpha simultaneously, and first parts 2 and second parts 3 close up.
First parts 2 and second parts, 3 clamping process: cold water channel 16 logical high-pressure cold waters, the cold water of high pressure is pressed in the intake antrum 151, the reach of driven plunger 16 relative fixed seats, because when this whole parts drives structure is installed, holder 15 is fixed on the rear fixed plate 112 of frame, and the relative coffee machine housing in shell 12 positions is fixed, therefore frame 11 support force that overcomes support spring 114 can move after the whole opposite shell 12, first parts 2 also move after the opposite shell 12, first parts 2 and second parts 3 are compressed under the hydraulic pressure effect mutually, form airtight extraction chamber, then just can carry out the coffee extracted process, this process and existing coffee machine are similar.
After extraction finishes, cold water channel 16 pressure releases, the cold water of the high pressure in the intake antrum 151 is laid down, whole parts are the opposite shell reach under the support force effect of support spring 114, the coupling mechanism force of first parts 2 and second parts 3 is removed, oppositely promote push pedal 4 then, push pedal 4 is at drive rod 5, under the effect of first connecting rod 6 and second connecting rod 7, move after driving second parts, 3 relative first parts 2, after driving second parts 3, push pedal 4 moves under the state that first parts 2 and second parts 3 open fully, the first back magnet 14a and the second back magnet 14b hold mutually, the annular edge of coffee capsule 18 is stopped by the front end face of two clamping plate 19 along 181, moves after second parts 3 continue, after coffee capsule 18 breaks away from the containing cavity 33 of second parts 3, coffee capsule 18 breaks away from position, capsule entrance 121 is opened in push pedal 4, for guaranteeing the safety and sanitation of coffee machine, when not using, still the push pedal that will move forward, push pedal 4 just capsule entrance 121 is covered.