JP2563665Y2 - Beverage extractor filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for a beverage extractor such as coffee or tea.

[0002]

2. Description of the Related Art An electric water heater and a hand pot are installed on a base, a filter is fitted on the upper part of the hand pot, and a discharge port of the water heater is made to face an opening of an upper part of the filter, and the water outlet comes out from the discharge port. BACKGROUND ART A beverage extractor for extracting a beverage such as coffee into a hand pot by pouring hot water into a filter is conventionally known.

[0003]

The conventional beverage extractor as described above has a disadvantage that the coffee pot must be extracted by tilting the hand pot after coffee extraction. Therefore, it is conceivable to use an air pot instead of a hand pot, but since the inside of the air pot is opened to the atmosphere through a filter fitted on the upper part, the internal pressure will increase even if the pump is operated as it is. Therefore, the internal beverage cannot be discharged.
For this reason, when discharging a beverage, there is an inconvenience that the pump must be operated after removing the filter and fitting the stopper to the upper part of the air pot to make the inside airtight.

Further, in the conventional beverage extractor, the filter fitted to the upper end of the hand pot has a structure in which the filter is screw-fitted into the fitting recess of the hand pot, so that the filter cannot be attached and detached with one touch. There were also inconveniences.

In view of the above, the present invention provides a filter in a beverage extractor using an air pot, in which opening and closing of a valve hole communicated with the inside of the air pot by one lever operation and one-touch engagement / disengagement of the filter are provided. That is the task.

[0006]

In order to solve the above-mentioned problems, a filter according to the present invention is provided with an opening in a filter which is detachably fitted to an upper end of an air pot, and a storage portion is provided inside the filter. In the beverage extractor provided, a valve member is attached to a lower end of an extraction cylinder provided on the bottom of the storage part, and a valve hole is provided at a lower end of an opening / closing member fitted by being urged upward around the extraction cylinder. The valve member is inserted into the valve hole so as to be openable and closable, and an engaging claw member urged radially outward and a cam member rotating by a required angle in a horizontal plane are provided inside the filter, and the cam member is and closing cam for opening and closing the valve hole engaged with the upper end of the opening and closing member, fitting the error <br/> Apotto the engaging claw of the engaging claw member engages the outer surface of the engaging claw member An engaging / disengaging cam for engaging and disengaging is provided. Valve hole and the engaging claw member by the positional relationship between the arm and disengaged cam is open - lock, closed - lock and closed - is obtained by to take a three-state of the lock release.

[0007]

When the position of the lever of the cam member is adjusted to the position of the "extracted state", the relationship between the valve hole and the engaging claw member is set to the "valve open-lock" state. Is set to "Discharge state", the same applies to "Valve close-lock"
The state is set so as to be in the "closed state-unlocked" state when the state is further adjusted to the "separated state". Then, when the lever is set to the "extraction state" and hot water is discharged from the water heater to the filter cup of the air pot, the beverage is extracted and dropped into the air pot. When the pump is operated in accordance with the “discharge state”, the internal pressure of the air pot increases, and the beverage inside is discharged. Further, when the filter is set to the “separation state”, the filter can be separated from the air pot, and at this time, the droplets do not spill.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A beverage extractor according to an embodiment is a coffee extractor in which an electric water heater 2 and a warming type air pot 3 are arranged side by side on a base 1 as shown in FIG. It is detachably installed in a shallow recess 4 provided on the upper surface of the base 1.

An air pot 3 is provided at the upper end of the water heater 2.
The discharge arm 5 is provided so as to be offset to the side and can rotate within a range of about 90 degrees in a horizontal plane. The rotary shaft 6 of the discharge arm 5 is inserted into a bearing 8 of a shoulder 7 of the water heater 2 as shown in FIGS. 2 to 4, and a discharge pipe 9 is provided through the inside of the rotary shaft 6. One end of the discharge pipe 9 is inserted into the internal container 11 (FIG. 2), and the other end is connected to the hot water discharge port 12 through the inside of the discharge arm 5.

When the discharge arm 5 is rotated toward the air pot 3 as shown by a two-dot chain line in FIG. 1, the hot water discharge port 12 at the end just above the filter 13 serving as a plug body of the air pot 3. It faces the opening 14 provided in the end face.

The bellows pump is housed in a cylindrical case 16 provided on the front surface of a shoulder 15 of the air pot 3, and when the push button 17 at the upper end thereof is pressed down, the inner container of the air pot 3 is opened. The internal pressure increases, and coffee is discharged from the beverage discharge port 20.

The internal structure of the air pot 3 is conventionally known except for the filter 13 which also serves as a plug (see, for example, Japanese Utility Model Laid-Open No. 1-79433), and has no direct relation to the present invention. Therefore, the description is omitted.

The recess 4 on the base 1 is provided with a detection switch 18 for detecting whether the air pot 3 is installed or whether the installation state is normal.

As shown in FIG. 4, a projection 19 is formed at the lower end of the rotating shaft 6 of the discharge arm 5, and in the vicinity of the projection 19, it is determined whether or not the discharge arm 5 is correctly oriented toward the air pot 3. A detection switch 21 for detecting is mounted. When the discharge arm 5 is correctly oriented in the direction of the air pot 3 as shown by a solid line in FIG. 4, the detection switch 21 is operated by the armature 22 being pushed by the projection 19, but as shown by a two-dot chain line. It will not work if it is out of the right direction.

Next, the internal structure of the filter 13 serving also as a plug of the air pot 3 will be described. This filter 13 is, as shown in FIGS.
3, a cam member 27 having a lid 24, a base 25, and a lever 26 protruding from an outer peripheral edge, an opening / closing member 28, and a pair of engaging claw members 2.
9, 29, etc.

The filter body 23 is provided with a tapered storage section 31 inside, and the filter pack 32 is stored in the storage section 31. An extraction tube 33 is provided below the opening at the bottom of the storage unit 31, and a plurality of extraction holes 34 are provided at the lower end of the extraction tube 33. A valve stem 35 is provided inside the extraction hole 34, and a valve member 36 is mounted around the valve stem 35 projecting downward.

The lid 24 is detachably mounted on the upper end of the filter body 23. The above-described opening 14 is provided at the center of the lid 24, and the hot water poured into the opening 14 falls onto the filter pack 32.

The base 25 is provided with the above-mentioned filter body 23.
And an outer cylindrical portion 37 is provided at the lower end thereof. As shown in FIG. 10, the outer cylindrical portion 37 has a semi-cylindrical shape, and is fitted into a fitting recess 38 provided in the shoulder 15 of the air pot 3. Steps 39, 39 are formed at two locations symmetrical with the center on the bottom surface inside the outer cylinder 37, and each step 39, 3
9 are provided with claw holes 40, 40 through which the engagement claws 55 at the tips of the engagement claw members 29, 29 are inserted. A projection 44 for positioning is provided on the outer peripheral surface of the missing circle portion of the outer cylindrical portion 37,
The filter 13 is positioned with respect to the air pot 3 by fitting with the positioning recess 50 of the fitting recess 38.

As shown in FIG. 7, a pair of guide plates 41 are provided on both sides of each claw hole 40 on the upper surfaces of the claw holes 40, 40.

A middle cylindrical portion 42 is provided on the inner periphery of the outer cylindrical portion 37.
Is provided. The upper end of the middle cylindrical portion 42 is opened, and a packing 43 (FIG. 5) is fitted to the lower surface thereof. This packing 4
Numeral 3 is closely attached to the periphery of the opening at the lower end of the fitting recess 38 of the air pot 3.

An inner cylinder 45 (FIG. 5) is provided inside the middle cylinder 42. The above-mentioned valve stem 35,
The valve member 36 is inserted at a required interval.

As shown in FIGS. 5 and 7, the opening / closing member 28 has an outer cylindrical portion 46 and an inner cylindrical portion 47 which are open at the lower end, and projections 48 are provided on both sides of the upper end. The outer tube 46 is inserted inside the middle tube 42 of the base 25, the inner tube 47 is fitted outside the extraction tube 33 of the filter body 23, and the lower end thereof is the inner tube of the base 25. 45 is inserted inside. Between the extraction cylinder 33 and the inner cylinder 47 and the inner cylinder 47
The space between the inner cylindrical portion 45 and the inner cylindrical portion 45 is sealed by O-rings 30 and 30 '(FIGS. 14 and 15).

A valve hole 49 is provided at the lower end of the inner cylindrical portion 47, and the valve member 36 is passed through the valve hole 49 with a required gap.

A coil spring 51 is interposed between the bottom of the base 25 and the opening / closing member 28 to urge the opening / closing member 28 upward.

The engaging claw members 29, 29
On the inside of 1, 41, it is mounted on the rib 52 and is fitted slidably in the radial direction (FIG. 11). Each engaging claw member 2
Reference numeral 9 denotes a spring receiving portion 53 (FIG. 7) which is opened inward. A projecting portion 54 serving as a cam follower is provided at the upper end of the spring receiving portion 53, and an engaging claw 55 is provided at the lower end. The engaging claw 55 projects downward from the above-described claw hole 40 (FIG. 10). One end of the coil spring 56 housed in the spring receiving portion 53 is applied to the middle cylinder portion 42, and the engaging claw members 29 are urged radially outward. For this reason, the engaging claw 55 is fitted to the fitting recess 38 of the air pot 3.
Are locked by engagement ribs 57 (FIG. 10) provided on the inner surface of the.

The cam member 27 is shown in FIGS.
As shown in FIG.
9 are integrally provided, and the lever 26
And the lever 26 is inserted into a horizontal slit 61 (FIG. 1) provided on the outer peripheral wall of the filter body 23. Further, three support arms 62 are protruded in the horizontal direction around the outer periphery of the disk portion 58, and the tips of the support arms 62 are engaged with the upper edge of the filter body 23 (FIG. 5), and the lever 26 is moved with the fingertip. By rotating the cam member 27 in the horizontal direction, the cam member 27 can be rotated within a range of about 90 degrees.

An opening 63 is provided at the center of the disk portion 58, and the extraction tube 33 of the filter body 23 is inserted through the opening 63. As shown in FIG. 8, a cylindrical reinforcing wall 64 surrounding the above-mentioned opening 63 is provided on the lower surface of the disk portion 58. Is provided. In addition, reinforcement wall 64
A pair of opening / closing cams 66 are also provided at two centrally symmetric locations along the inner periphery of the cam.

The engaging / disengaging cam 65 is connected to the engaging claw member 29.
Is actuated in the radial direction to disengage the filter 13 with the engagement rib 57 of the fitting recess 38 of the air pot 3. As shown in FIG. 12, a large-diameter cam surface 67 and a large-diameter cam surface 67 are provided. A small-diameter cam surface 68 that is smoothly continuous with one end of 67 is provided. The engagement pawl members 29 are provided on these cam surfaces 67 and 68.
The protrusion 54 as a cam follower is pressed. When the projection 54 is pressed against the large-diameter cam surface 67, the engaging claw member 29 is located at the outermost position.
The engaging claws 55 are locked by the engaging ribs 57 (FIGS. 5 and 1).
4). When the projection 54 is pressed against the small-diameter cam surface 68 (see a two-dot chain line in FIG. 13), the engaging claw 55 is disengaged from the engaging rib 57 (FIG. 15).

The opening / closing cam 66 operates the opening / closing member 28 in the vertical direction to open and close the valve hole 49, and has a valley 69 at the lower end surface of each opening / closing cam 66.
(FIG. 16), a shallow recess 72 is provided at the upper end of a peak 71 continuous with the valley 69, and projections 48 as cam followers projecting from both sides of the upper end of the opening / closing member 28 are provided. Pressed against the part.

The state where the projection 48 is at the bottom of the valley 69 (FIG. 1)
6a), the opening / closing member 28 is at the highest position. In this state, the relationship between the engagement / disengagement cam 65 and the projection 54 is such that the projection 54 hits the large-diameter cam surface 67 as shown in FIG.
5 is locked by the engagement rib 57 (FIG. 5). Therefore, in this state, the filter 13 is locked and the valve hole 49 is opened. Hereinafter, this state is referred to as an “extraction state”.

When the projection 48 enters the cam surface forming the valley 69, the projection 48 naturally moves to a stable state at the bottom of the valley, and is reliably brought into the extraction state.

In the state shown in FIG. 16B in which the projection 48 fits into the shallow recess 72 at the upper end of the peak 71, the opening / closing member 28 is at the lowest position. In this state, the relationship between the opening / closing cam 66 and the protruding portion 54 is such that the protruding portion 54 contacts the large-diameter cam surface 67 as shown in FIG. (FIG. 14). Therefore, in this state, the filter 13
Is locked, and the valve hole 49 is closed by the valve member 36. For this reason, since the inside of the air pot 3 becomes airtight, when the push button 17 of the bellows pump is operated, the internal pressure increases and the coffee inside can be discharged. Hereinafter, this state is referred to as a “discharge state”.

The state shown in FIG. 16C in which the projection 48 has risen to the opposite end of the valley 69 is an unstable state, and this state is maintained by pressing the lever 26 with a fingertip. In this state, the opening / closing member 28 is at the lowest position, and the relationship between the engagement / disengagement cam 65 and the projection 54 is, as shown by a two-dot chain line in FIG.
Abuts on the small-diameter cam surface 68, so that the engaging claw 55 comes off the engaging rib 57 (FIG. 15). Therefore, in this state, the lock of the filter 13 is released, and the valve hole 49 is closed. Therefore, the filter 13 can be separated and removed from the air pot 3. Also, at this time, it is possible to prevent the drips from falling out of the valve hole 49. Hereinafter, this state is referred to as a “separated state”.

On the other hand, the electric equipment of the above-mentioned coffee brewer comprises a hot water heater 73, a warming heater 74 and a relay contact 7 for turning on and off the hot water heater 73 shown in the circuit diagram of FIG.
And a control circuit 79 including a motor 77 and a microcomputer 78. Each of the detection switches 18 and 21 is connected to a microcomputer 78.

Also, as shown in FIG. 1, an auto switch 81, a timer switch 82, a reboiler switch 83, and a display lamp 8 corresponding thereto are provided on the front of the water heater 2.
4, 85, 86 are provided, and these switches 81, 8
2, 83 and display lamps 84, 85, 86 are connected to the microcomputer 78, respectively.

FIG. 18 is a state transition diagram of the water heater 2 and FIGS. 19 to 21 are flowcharts based on a program of the microcomputer 78.

The flowchart of FIG. 19 is a flow when the auto switch 81 is pressed, and outputs an error notification 1 when the detection switch 21 of the discharge arm 5 is not operated. If the detection switch 18 for determining whether or not the air pot 3 is installed and whether or not the air pot 3 is normally installed is not operated, an error notification 2 is output.

These error notifications 1 and 2 are transmitted by distinguishing the tone of the buzzer or by changing the way of blinking of the alarm lamp so that the error location can be distinguished.

Note that the above flow is a timer mode,
In any of the water heating mode, the warming mode, and the auto mode, the process is executed when the auto switch 81 is pressed and before the motor 77 is driven in the auto mode.

The flow based on the flowchart of the reboil mode in FIG. 20 is executed when the reboil switch 83 is operated, but is also executed when the auto switch 81 is operated in the heat retention mode. (See the state transition diagram of FIG. 19). This is because the heat retention temperature is usually 95 degrees,
This is because the temperature is lower than the boiling temperature, so that the extraction temperature of the coffee is too low, and the quality of the coffee is not constant due to the change of the extraction temperature.

In the auto mode shown in FIG. 21, a 4-minute timer is provided because hot water immediately after boiling contains air bubbles, and the air bubbles may be caught in the motor 77 and fall into a state in which discharge is impossible. This is because the motor 77 is driven after the bubbles have disappeared. In addition, the operation of driving the motor 77 for 14 seconds and then resting for 20 seconds is repeated nine times because the coffee is intermittently extracted so that coffee with a better taste than in the case of continuous extraction is obtained. This is because it can be extracted.

Although the above embodiment has been described with reference to the coffee extractor, the basic structure of the extractor for tea, green tea, barley tea, etc. is the same, and the program of the microcomputer 78 is changed according to the characteristics of each beverage. Just need.

[0043]

As described above, according to the present invention, a cam member of an air pot operated by one lever is provided with an opening / closing cam and an engaging / disengaging cam, and a valve hole is formed by the opening / closing member operated by the opening / closing cam. The filter is opened and closed, and the filter is locked to or unlocked from the air pot by an engagement claw member operated by an engagement / disengagement cam. Due to the above-described positional relationship between the respective cams, the valve hole and the engagement member may be “
There are three states: an "extraction state" in a "locked" state, a "discharge state" in a "valve closed-locked" state, and a "separated state" in a "valve closed-unlocked" state. According to the present invention, any one of these three states can be selected with one lever, so that there is an effect that the operation of extracting, discharging, and separating the filter can be easily performed.

Further, the inside of the air pot can be made airtight in a state where the plug is fitted on the upper portion of the air pot, so that the pump can be normally operated to extract coffee and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a partial longitudinal sectional view of the above.

FIG. 3 is a partially enlarged longitudinal sectional view of the above.

FIG. 4 is a partially enlarged cross-sectional plan view of the above.

FIG. 5 is a partial longitudinal sectional view of the above.

FIG. 6 is a partially exploded perspective view of the same.

FIG. 7 is a partially exploded perspective view of the same.

FIG. 8 is a bottom perspective view of the cam member.

FIG. 9 is a partially cutaway perspective view of the base.

FIG. 10 is a partially exploded perspective view of the above.

FIG. 11 is a sectional view of a portion of the engaging claw member according to the third embodiment;

FIG. 12 is a bottom view of the same cam member.

FIG. 13 is a bottom view of the same cam member.

FIG. 14 is a partial longitudinal sectional view of the above.

FIG. 15 is a partial longitudinal sectional view of the above.

FIGS. 16A to 16C are positional relationship diagrams of the engaging / disengaging cam and the projection according to the first embodiment;

FIG. 17 is a circuit diagram of the above.

FIG. 18 is a state transition diagram of the above.

FIG. 19 is a flowchart of the above.

FIG. 20 is a flowchart of the above.

FIG. 21 is a flowchart of the above.

[Explanation of symbols]

 Reference Signs List 1 base 2 water heater 3 air pot 4 recess 5 discharge arm 6 rotating shaft 7 shoulder 8 bearing 9 discharge pipe 11 inner container 12 hot water discharge port 13 filter 14 opening 15 shoulder 16 case 17 push button 18 detection switch DESCRIPTION OF SYMBOLS 19 Projection 20 Beverage outlet 21 Detection switch 22 Armature 23 Filter body 24 Lid 25 Base 26 Lever 27 Cam member 28 Opening / closing member 29 Engaging claw member 30, 30 'O-ring 31 Storage unit 32 Filter pack 33 Extraction cylinder 34 Extraction hole 35 Valve stem 36 Valve member 37 Outer cylinder 38 Fitting recess 39 Step 40 Claw hole 41 Guide plate 42 Middle cylinder 43 Packing 44 Projection 45 Inner cylinder 46 Outer cylinder 47 Inner cylinder 48 Projection 49 Valve hole 50 Positioning recess 51 Coil spring 52 Rib 53 Spring receiving part 54 Projecting part 55 engaging claw 56 coil spring 57 engaging rib 58 disk part 59 sector part 61 slit 62 support arm 63 opening 64 reinforcing wall 65 engaging / disengaging cam 66 opening / closing cam 67 large-diameter cam surface 68 small-diameter cam surface 69 valley 71 valley 71 72 recess 73 water heater 74 warming heater 75 relay 76 winding 77 motor 78 microcomputer 79 control circuit 81 auto switch 82 timer switch 83 reboiler switch 84 display lamp 85 display lamp 86 display lamp

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masakatsu Yamauchi 5-5-5 Uenocho, Tajimi City, Gifu Prefecture Inside Tanika Denki Co., Ltd. (72) Kazumasa Nakajima 5-5 Uenocho, Tajimi City, Gifu Prefecture Tanika Inside Electric Co., Ltd. (72) Inventor Masakatsu Yoneda 1-20-5 Tenma, Kita-ku, Osaka-shi, Osaka Zojirushi Mahobon Co., Ltd.

Claims (1)

(57) [Scope of request for utility model registration] 1. A beverage extractor having an opening provided in a filter detachably fitted to an upper end of an air pot and a storage part provided in the filter, wherein a lower end of an extraction cylinder provided on a bottom surface of the storage part. And a valve hole is provided at the lower end of the opening / closing member fitted upwardly around the extraction cylinder, and the valve member is inserted into the valve hole so as to be openable and closable. An opening / closing cam for providing an engaging claw member urged outward in the direction and a cam member rotating at a required angle in a horizontal plane, and engaging the upper end of the opening / closing member with the cam member to open and close a valve hole; said engage the outer surface of the engaging claw member provided with engaging claw fitting portion of the engaging claw air pots and engaged Dasse occupied disengagement cam of the member, the opening and closing cam and disengaged cam Depending on the positional relationship between the valve hole and the engagement claw member, the valve opening-locking, valve closing- A filter for a beverage brewer, wherein the filter is in three states: locking and closing / unlocking.