JP3084022B1 - DC power supply for liquid container - Google Patents

Abstract

An object of the present invention is to reduce the number of components and facilitate assembly in a DC power supply device for a liquid container such as an electric pot by omitting a relay lead wire connecting between a battery and a control board. . SOLUTION: A battery box 25 is provided adjacent to a substrate box 26, and an input contact 51 connected to a predetermined portion of a control board 47 is brought into contact with an output contact 41 provided on a battery case 36 in the battery box 25. To turn on electricity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC power supply for a liquid container such as an electric pot.

[0002]

2. Description of the Related Art In a liquid container provided with a heating device such as an electric pot, a commercial power supply is used as a power supply, and the heater is energized to perform water heating. The direct current thus obtained is used as a driving power source for the pump, and the pump is driven to discharge the internal liquid.

In addition, a battery is built in the above-mentioned liquid container and connected to a drive circuit of a pump. When a commercial power supply is used, a rectified DC is used as a drive power supply of the pump as described above. It is known that a built-in battery is used as a drive power supply for a pump when discharging the internal liquid while the container is separated from a commercial power supply (see, for example, Japanese Patent Application Laid-Open No. 8-187175).

[0004]

In the above-described liquid container containing a battery, since the storage portion of the battery and the control board are separated from each other, the terminal provided on the battery case and the terminal on the control board side are not connected to each other. Are connected by a relay lead wire.

[0005] However, the above-mentioned relay lead wires have a problem of increasing the number of parts and complicating the assembling work.

Accordingly, the present invention aims to reduce the number of parts and increase the efficiency of the assembling work by enabling the supply of DC power from a battery to the control board side without using the above-mentioned relay lead wire. Make it an issue.

[0007]

In order to solve the above problems, the present invention provides a battery housing and a substrate box inside a container body, a battery case in the battery housing, and a control board in the substrate box. In a DC power supply device for a liquid container, a battery in the battery case is used as a DC power supply for a pump drive circuit formed on the control board. and is provided, the connected input contacts a predetermined portion of the control board, either by direct contact with the electrodes of the battery, or by contacting via the output contact provided in the battery case, the electrocoating
By connecting the pond storage section and the board box integrally,
An opening that is open to the outside of the container body is provided in the storage
A holding mechanism is provided on the inner surface of the battery storage unit facing the opening,
The battery is stored in the battery compartment through the opening
The battery case is configured to be held by the holding mechanism .

[0008]

The battery case may be provided with an insertion hole corresponding to the battery electrode, and the input contact may be directly contacted with the electrode through the insertion hole. A configuration may be adopted in which a contact for output is provided, the contact for output is exposed to the outside of the battery case, and the contact for input and the contact for output are contacted.

Further, the above-mentioned board box may be constituted by a box body and a box cover to be put on the box body, and the middle of the input contact may be sandwiched between the box body and the box cover.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Although the electric pot shown in the accompanying drawings is shown upside down, this is for convenience of understanding, and the up and down relationship in the following description is based on the up and down in the erect state of the electric pot. .

In the electric pot of the first embodiment, an inner container 3 is housed inside an exterior body 2 constituting a container main body 1 in the same manner as a conventional electric pot. The exterior body 2 includes a body member 4 surrounding the inner container 3, a bottom member 5 fitted to the bottom of the body member 4, and a shoulder member 6 fitted to the upper part of the body member 4. The inner container 3 is fixed by the shoulder member 6 and the bottom member 5. A beak 7 is provided at the front of the shoulder member 6, and a liquid discharge port 8 is provided at the beak 7. The distal end of the liquid discharge passage 9 faces the liquid discharge port 8. A safety valve set 11 is provided inside the shoulder member 6 in the middle of the liquid discharge passage 9. The liquid discharge passage 9 communicates with the inside of the inner container 3 via a pump 12. Although not shown, an opening / closing lid is attached to the shoulder member 6.

A plug receiving portion 13 for attaching and detaching a power plug is provided on the rear side surface of the bottom member 5. Also,
A circular bottom opening 14 is provided on the bottom surface of the bottom member 5, and the bottom opening 14 is closed by a disc-shaped closing plate 15. Further, in order to allow the container main body 1 to be rotatably mounted on a support surface such as a table, the container body 1 is formed along the outer peripheral edge of the closing plate 15 on the bottom surface of the bottom member 5 as in the conventional case. A guide groove 18 is provided, and a rotation support ring 19 is fitted in the guide groove 18.

FIG. 2 shows a state in which the bottom member 5 and the body member 4 have been removed and are being assembled. A heat insulating plate 21 attached to the lower surface of the inner container 2 has an insulator 22 for a power supply lead wire,
The thermal fuse 23, the board unit 24 and the like are mounted.

The above-mentioned board unit 24 has a battery box 25 as a battery accommodating section and a board box 26 provided close to each other, and is connected and integrated by a connecting section 27, and is provided in a part of the board unit 24. A pair of mounting parts 2
8 and 28 are fixed to the fixing legs 31 of the heat shield plate 21 by bolts 29 and 29.

The above-mentioned battery box 25 is shown in FIGS.
As shown in (1), a latch 32 is provided at the center of the front surface facing the substrate box 26, and small openings 33 are provided on both sides of the latch 32. The receiving port 34 of the latch 32 is opened inside the battery box 25 (see FIG. 5A).

The rear surface of the battery box 25 opposite to the substrate box 26 is open, and an opening 40 (see FIGS. 1 and 4) corresponding to the open surface 35 is provided in the bottom member 5. The battery case 3 passes through the opening 40 and the open surface 35.
6 is housed in the battery box 25 so as to be freely taken in and out.

The battery case 36 has an open top so that two batteries 37 can be housed side by side. At the center of the front surface of the battery case 36, a projection 38 for engagement and disengagement facing the latch 32 is provided (see FIG. 3), and a pair of corners communicating with the inside of the battery case 36 on both sides of the projection 38. The cylinders 39, 39 are connected to the small openings 33, 33
And a size that can be inserted with a margin.

Inside the battery box 25, there are provided a pair of output contacts 41, 41 which contact the positive electrode of one battery 37 and the negative electrode of the other battery 37, respectively. Each output contact 41 is bent into an L-shape and inserted into the square tube 39, and a portion exposed to the outside of the square tube 39 is bent into a horizontal U-shape to form a contact portion 42.

A common electrode plate 43 is provided on the rear end face of the battery case 36 so as to be in contact with both batteries 37. Further, a finger hook 44 which is opened downward is provided behind the electrode plate 43. In addition, positioning ribs 45 are provided on the outer surface of the battery case 36 to contact the inner surface of the battery box 25 and prevent rattling.

When two batteries 37 are accommodated in the battery case 36 and inserted from the open surface 35 at the rear end of the battery box 25, the projection 38 on the front surface of the battery case 36 extends to the receptacle 34 of the latch 32. Open state (Fig. 5
(See FIG. 5 (a)), which is fitted between the two lock arms 46, 46, and is locked by pushing the internal mechanism (FIG. 5).
(B)). At the same time, the rectangular cylinders 39, 39 pass through the small openings 33, 33, and the tip ends thereof are in the battery box 25.
Stick out the front of the When the battery case 36 is removed, the lock of the latch 32 is released by slightly pushing the battery case 36 (FIG. 5).
(See (c)), the projection 38 is released from the lock arm 46 (see (a) in the figure).

Each time the projection 38 is pushed in, the latch 32 is opened (FIG. 2A), locked (FIG. 2B),
(C) This is a push-push type latch that can sequentially take the three modes of unlocking in the figure. The details are shown in FIG. 6 and FIG.

The latch 32 comprises a rectangular case 57 having one end open, a lock member 58 having the lock arm 46, a coil spring 59, and a mechanism spring 61. The mechanism spring 61 is formed by bending a resilient metal wire into a rectangular shape and abutting both ends of the metal wire at one short side thereof with a slight space therebetween. The other short side is attached to the inner bottom surface of the case 57. Locking claws 62 for engaging the battery box 25 are provided on both side surfaces of the case 57, and guide grooves 63 of the lock member 58 are provided on the front surface of the case 57 (see FIG. 5A). ).

The lock member 58 has a square shaft portion 64 which is slidably housed in the case 57, and the lock member 58 is provided with a flexible portion 65 formed on both sides of the upper end of the square shaft portion 64. Are provided, and a head portion 64 ′ is provided between the two lock arms 46.

A blind hole 66 is provided in the bottom surface of the square shaft portion 64, and the coil is provided between the inside of the blind hole 66 and the bottom surface of the case 57 to urge the square shaft portion 64 forward. The spring 59 is stored. A guide protrusion 67 is provided on the front surface of the square shaft portion 64, and the guide protrusion 67 is slidably fitted in the guide groove 63.

At the center of one side of the square shaft portion 64, a mechanism portion 68 thinner than the square shaft portion 64 is provided. If the surface of the mechanism shaft 68 on which the guide protrusion 67 is provided is referred to as the front surface, and the opposite surface is referred to as the back surface, the surface mechanism groove 69 is formed on the front and back surfaces of the mechanism portion 68 in cooperation with the inner surface of the case 57. A back surface mechanism groove 69 'is provided (FIGS. 6 and 7A to 7C).
), Butted ends 71, 71 'of the mechanism spring 61 are fitted into the respective mechanism grooves 69, 69'.

The surface mechanism groove 69 is composed of a linear groove 72 and a circumferential groove 73 connected to the upper end thereof. The lower end of a land 74 forming the center of the circumferential groove 73 is formed in a bow shape toward the linear groove 72. It is formed sharp and has an L-shaped cut 7 at the upper end.
5 are provided. The circumferential groove 73 faces the cut 75.
A protruding portion 76 is provided on the inner surface of the
6, pockets 77a and 77b are formed on both sides. One of the butting ends 71 of the mechanism spring 61 is provided as shown in FIG.
As shown by the arrows in FIG.
3, the pocket 77a, the cut 75, the pocket 77b, the return-side circumferential groove 73, and the linear groove 72 are sequentially moved to complete one process.

The back mechanism groove 69 'also includes a linear groove 72' and a circumferential groove 73 'continuous with the upper end thereof.
An arc portion 78 bulging outward is provided on one side of 3 '.
The lower end of the land 74 ', which forms the center of the orbiting groove 73', is sharply formed like a bow toward the linear groove 72 'and slightly biased toward the orbiting groove 73'. Stick out. Due to the deviation, a portion that transitions from the linear groove 72 ′ to the orbital groove 73 ′ on the outward path forms an entrance guide 79 that opens greatly downward. Also, the upper end of the land 74 'is a gentle recess 80, and the most recessed portion and the depth of the cut 75 are set to be at the same position on both sides (FIG. 7 (c)). reference). A protruding portion 76 ′ is provided on the inner surface of the orbital groove 73 ′ so as to face the recess 80.
Pockets 77a ', 77 are provided on both sides of the protrusion 76'.
b ′ is formed.

Further, a corner portion 81 of the land portion 74 'on the side of the arc portion 78 protrudes to the side according to the arc portion 78.

One butt end 71 'of the mechanism spring 61 has a straight groove 7 as shown by an arrow in FIG.
2 ', entrance guide 79, outward path side circumferential groove 73', corner portion 81, pocket 77a ', recessed portion 80, pocket 77
b, the return side circulation groove 73 'and the linear groove 72' are sequentially moved to complete one process.

In the above-mentioned latch 32, in the normal state, the lock member 58 is urged by the coil spring 59 and the case 57
6 is located at a position farthest upward from the bottom of the lock arm 46, and the lock arms 46, 46 are open left and right (FIG. 6 (c)).
reference). At this time, the butting end 71 of the mechanism spring 61,
71 'is located at the same position on the front and back of the linear grooves 72, 72' of the mechanism grooves 69, 69 '(reference numerals (a) and (a)' in FIG.
reference).

Next, when the above-mentioned projection 38 of the battery case 36 is pressed against the head portion 64 ′ of the lock member 58 and pushed in, the butting ends 71 and 7 of the mechanism spring 61 are pushed.
1 ′ is a linear groove 7 of the front and back mechanism grooves 69, 69 ′, respectively
From 2, 72 ', it goes into the outward-side circulation grooves 73, 73'. These butted ends 71 and 71 ′ are provided in the respective outgoing-side circumferential grooves 7.
3 and 73 ', the mechanism spring 61 is provided with a slight inclination angle θ (see FIG. 7B), and the above-mentioned entrance guide 79 is provided.

One of the butting ends 71 is the forward orbiting groove 7
3 is moved toward the pocket 77, but when the other butted end portion 71 'passes through the outward groove 73', it is elastically deformed outward (toward the arc portion 78) on the side surface of the land portion 74 '. (See (b) in the figure.)
1 'is also pulled in that direction. Therefore, the butted end 71 moves along the side wall of the outward orbiting groove 73 (see (b) ′ in the figure).

When the other butted end 71 'crosses the corner 81 and reaches the pocket 77a' and returns to the original non-deformed state (see (c) 'in the figure), it is pulled by this and the one butted end 71' is drawn. 71 also reaches the pocket 77a (see (c) in the figure).

When the hand is released from the battery case 36, the lock member 58 is slightly pushed back by the spring force of the coil spring 59, and the lock arm 4 is inserted into the projection 38 on the battery case 36 side.
6 is engaged (see FIG. 5B). At this time, both butted ends 71 and 71 'are in the cut 75 and the recess 80, respectively (see (d) and (d)' in the figure).

When the battery case 36 is pushed in to take out the battery case 36, the lock member 58 is retracted and the one end 71 moves upward along the L-shaped cut 75 to reach the pocket 77b (see FIG. ) (See (f)), the other butted end 71 'reaches the pocket 77b' while undergoing elastic deformation along the protruding portion 76 '(see (e)' and (f) 'in the figure), and is in a non-deformed state. Return to In this state, the lock is released (see FIG. 5 (c)), and when the battery case 36 is taken out, the lock member 58 returns to the original state, and at the same time, the butted ends 71 and 71 'are also (a) and (b). ) '(See FIG. 5A).

The battery case 36 is connected to the battery box 25.
The mechanism for holding the inside is not limited to the latch 32 described above.
For example, a configuration in which a lid is fitted to the open surface 35 of the battery box 25, a configuration in which an engagement means is provided on a side edge of the open surface 35, and the like can be adopted.

Next, the board box 26 includes a control board 47.
, And a box cover 49 that covers the box body 48, and a pair of input contacts 51, 51 is provided in a portion facing the battery box 25. As shown in FIG. 4, one end of each input contact 51 is connected to a pump drive circuit portion of the control board 47, and is fitted to a positioning small projection 50 provided on the control board 47. Exposed to the outside and L
It is bent into a shape, and its tip is bent to form a contact portion 52 having elasticity. Each contact portion 52 faces the contact portion 41 of the output contact 41, and the battery case 36
Is inserted into the battery box 25 as described above,
As shown in FIG. 4 (b), the two contact portions 42 and 52 come into contact with each other with resiliency and become energized.

When the box cover 49 is fitted to the box body 48, the input contact 51 is clamped between these opposing surfaces, and the opposing surfaces other than the clamped portion are in close contact. The box cover 49 and the box body 48 are
As shown in FIG. 3, the engagement holes 53 of the box body 48 are engaged with the engagement claws 54 of the box cover 49 so as to be tightly connected.

The input contact 51 may be formed of an elastic wire, and the contact portion 52 may be formed by winding it in a coil shape.

The liquid container of the first embodiment is as described above. The battery case 36 containing the battery 37 is inserted into the battery box 25 through the opening 40 of the bottom member 5 as described above, and the projection 38 is Locked by the latch 32,
The battery case 36 is held inside the battery box 25. At the same time, the contact portions 42 and 52 of the output contact 41 and the input contact 51 come into contact with each other and become energized, and when the liquid container is used by being separated from the commercial power supply, the battery 37 It becomes the drive power supply.

During use, the opening 40 of the bottom member 5
Although water may enter inside through the substrate box 26, since the substrate box 26 has only a small gap at the portion where the input contact 51 is sandwiched, it is necessary to prevent water from entering the substrate box 26. Can be.

The input contact 51 receives a force in the pushing direction from the battery case 36 side. As described above, the input contact 51 is connected to the box body 48 and the box cover 4.
9, the contact portion 52 can be prevented from being displaced, and the stress applied to the mounting portion of the input contact 51 on the control board 47 can be reduced.

Next, FIG. 8 shows a second embodiment.
In this case, the contact portion 52 of the input contact 51 is brought into direct contact with the electrode of the battery 37 without providing the output contact 41 in the battery case 36 as described above. To this end, insertion holes 55 and 56 are provided on the front surface of the battery case 36 and the front surface of the battery box 25, respectively, and the input contact 51 is formed to be longer than that described above. Insert the batteries 37 into the holes 55 and 56
Contact with the electrodes. Other configurations are the same as those in the first embodiment.

In the third embodiment shown in FIG. 9, the battery box 25 is integrally provided on the box cover 49 of the board box 26, and the input contact 5 set at a predetermined position on the control board 47 is provided.
1 through the box cover 49 and the box cover 4
9 is in contact with the output contact 41 of the battery case 36 outside. Other configurations are the same as those of the first
This is the same as in the embodiment.

[0046]

As described above, according to the present invention, the battery accommodating portion is provided adjacent to the substrate box, and the input contact on the substrate box side is directly contacted with the electrode of the battery on the battery accommodating portion side.
Alternatively, since the contact is made via the output contact provided in the battery case, there is no need to use a relay lead wire for connection between the battery and the control board. For this reason, the number of parts is reduced and the assembling is facilitated.

Further, since the input contacts are provided to extend outside the board box, the board box only needs to have a small gap or hole through which the input contacts can pass. The possibility of intrusion can be eliminated.

Further, by disposing the input contact between the box body of the board box and the box cover, the displacement of the contact portion of the input contact can be prevented.
The stress applied to the input contact point on the control board can also be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electric hot water pot according to a first embodiment.

FIG. 2 is a partially omitted exploded perspective view of the same.

FIG. 3 is an exploded perspective view of the substrate unit of the above.

FIG. 4 (a) is a cross-sectional plan view of the same substrate unit as in the above (b);

5 (a) to 5 (c) are cross-sectional views of a latch part of the same.

FIG. 6 (a) is an exploded perspective view of the same latch. (B) is a perspective view of a lock member of the same latch. (C) is a sectional view of the same latch. (D) is a sectional view of the same latch.

FIG. 7A is a plan view of a surface mechanism groove of the same latch. FIG. 7B is a plan view of a rear mechanism groove of the same latch. FIG.

FIG. 8A is a cross-sectional plan view of a board unit portion of the second embodiment, and FIG. 8B is a cross-sectional view taken along line bb in FIG.

FIG. 9 is a sectional view of a substrate unit according to the third embodiment

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Outer body 3 Inner container 4 Body member 5 Bottom member 6 Shoulder member 7 Beak part 8 Liquid discharge port 9 Liquid discharge passage 11 Safety valve set 12 Pump 13 Plug receiving part 14 Bottom opening 15 Closure plate 18 Guide groove 19 Rotation support Ring 21 Heat shield 22 Insulator 23 Thermal fuse 24 Board unit 25 Battery box 26 Board box 27 Connecting part 28 Mounting part 29 Bolt 31 Fixed leg 32 Latch 33 Small opening 34 Receptacle 35 Opening surface 36 Battery case 37 Battery 38 Projection 39 Angle Cylinder 40 opening 41 output contact 42 contact part 43 electrode plate 44 finger hook part 45 positioning rib 46 lock arm 47 control board 48 box body 49 box cover 50 positioning small protrusion 51 input contact 52 contact part 53 engagement hole 54 engagement Claw 55 Insertion hole 56 Insertion 57 case 58 locking member 59 coil spring 61 mechanism spring 62 locking claw 63 guide groove 64 square shaft part 64 'head part flexible part 66 blind hole 67 guide projection 68 mechanism part 69 surface mechanism groove 69' back surface mechanism groove 71, 71 'Butt end 72, 72' Straight groove 73, 73 'Orbital groove 74, 74' Land 75 Cut 76, 76 'Projection 77a, 77a', 77b, 77b 'Pocket 78 Arc part 79 Entrance guide 80 Concave Entry part 81 corner part

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-322724 (JP, A) JP-A-4-108416 (JP, A) JP-A 8-187175 (JP, A) JP-A-7- 289427 (JP, A) JP-A-10-262830 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 27/21 101

Claims (4)

(57) [Claims] A battery housing and a substrate box are provided inside a container body, a battery case is housed in the battery housing, and a control board is housed in the board box, respectively, and a pump drive circuit formed on the control board is provided. In the DC power supply device for a liquid container, wherein the battery in the battery case is used as a DC power supply, the input terminal connected to a predetermined portion of the control substrate is provided with the battery storage portion provided close to a substrate box. were either direct contact with the electrode of the battery, or by contacting via the output contact provided in the battery case, the battery Osamu
The storage section and the board box are connected together to store the battery
An opening that is open to the outside of the container body is provided in the
A holding mechanism is provided on the inner surface of the battery storage unit facing the mouth,
The above-mentioned battery housed in the battery compartment through the opening
A DC power supply device for a liquid container , wherein a pond case is held by the holding mechanism . 2. The liquid according to claim 1, wherein an insertion hole corresponding to a battery electrode is provided in the battery case, and the input contact is brought into direct contact with the electrode through the insertion hole. DC power supply for the container. 3. An output contact in contact with a battery electrode in the battery case, the output contact is exposed outside the battery case, and the input contact and the output contact are brought into contact with each other. The DC power supply for a liquid container according to claim 1 or 2, wherein the DC power supply is provided. 4. The apparatus according to claim 1, wherein said board box is constituted by a box body and a box cover put on said box body, and said input contact is held halfway between said box body and said box cover. 4. The DC power supply for a liquid container according to any one of 1 to 3.