JP2686214B2 - Power supply connection device for electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply connection device for connecting to an external power supply of various electric devices such as an electric pot.

[0002]

2. Description of the Related Art FIG. 7 shows a power supply connecting device used in a conventional electric pot. To explain this, a resin bottom member c is attached to the lower end of the metal outer case b of the body a from below, and a mounting port for attaching a resin plug receiver d to one side of this bottom member c. e is formed.

A plug receiver d for making an electrical connection with a magnet plug f for connecting a power source is externally fitted to the mounting port e, and a protrusion h provided on the upper surface of the outer periphery of the plug receiver d is mounted. The engaging portion i at a part of the peripheral edge of the mouth e is engaged to prevent coming off.

Then, the plug receptacle d is inserted into the insertion hole j extending from the lower surface of the outer periphery to the upper portion, and the middle portion is inserted into the plug receptacle d.
The bottom end m of the plug suction piece l facing the plug receiving surface k is made to face the bottom cover m attached to the bottom member c of the body a from below so as to prevent the plug suction piece l from coming off. There is.

The plug receiver d and the plug suction piece 1 are prevented from coming off in the procedure of assembling the necessary parts of the electric pot, and there is no need for a dedicated retaining member or a dedicated work for retaining. , Helps to reduce costs.

[0006]

However, in the case of the above-mentioned conventional structure, the plug receiver may sometimes loosen due to unforeseen handling in physical distribution or on the side of the user, causing rattling. In some cases, there is a concern that it will come off accidentally. In addition, since the bottom cover m needs to be specially provided with the supporting portion m1 projecting upward in order to hold the plug suction piece 1, the structure becomes complicated.

In view of the above, the present invention does not require a special retaining member or a retaining operation, and therefore ensures a secure connection of the plug receiver and the plug suction piece at a low cost. The challenge is to provide.

[0008]

In order to achieve the above-mentioned object, the present invention provides an electrical connection with a magnet plug for connecting a power source to a mounting opening opened at one side of the bottom of the body. The plug receptacle is fitted from the outside, and the protrusion provided on the upper surface of the outer periphery of the plug receptacle is engaged with a part of the peripheral edge of the mounting port to prevent the plug receptacle from coming off, and the insertion hole from the lower surface of the outer periphery of the plug receptacle to the upper portion. In a power supply connection device for electrical equipment in which the plug suction piece is inserted into the plug receptacle so that the middle part faces the plug receiving surface of the plug receptacle, the lower end of the plug suction piece is projected downward from the plug receptacle. The lower end of the plug suction piece that protrudes downward is used as a retaining portion that abuts against the rear surface of the peripheral edge of the mounting opening to prevent the plug receiver from coming off. Abutted against It is characterized in that it has a part.

The retaining portion of the plug holder formed on the plug attracting piece projects in both the front and back directions with the same size required for abutting the peripheral back surface of the mounting opening from both the front and back surfaces that can face the magnetic plug of the plug attracting piece. It is preferable that it is bent.

[0010]

In the above-mentioned structure of the present invention, the plug suction piece is fitted into the plug receptacle after it is fitted into the fitting opening from the outside, so that the fitting of the plug receptacle into the fitting opening is not obstructed. Assembling the plug suction piece on the bottom, the stopper part at the lower end projects to the lower surface of the outer periphery of the plug receiver and comes into contact with the back surface of the peripheral edge of the mounting port, so there is no need for a dedicated stopper member or stopper work for the plug receiver. To prevent it from coming off,
This retaining state is maintained without a special mounting structure by the contact portion formed by simply extending below the lower end of the retaining portion being brought into contact with the bottom lid, so that the retaining structure remains simple. It is possible to prevent rattling of the plug holder and plug suction piece, and to prevent accidental disengagement.
The structure is simple and can be constructed at low cost.

In this case, the retaining portion of the plug receiving piece formed on the plug attracting piece protrudes in both directions from the front and back sides which can face the magnetic plug of the plug attracting piece with a dimension required to contact the peripheral back surface of the mounting port. If the plug suction piece is fitted so that either the front surface or the back surface faces the magnet plug, the part that protrudes to the side of the retainer that faces the magnet plug is the mounting opening. Since it comes into contact with the back surface of the peripheral edge, it can exert a retaining function, and since the retainer part projects toward the surface facing the magnetic plug and abuts against the rear surface of the peripheral edge of the mounting port, it does not fit into the insertion hole of the plug suction piece. The position is away from the back surface of the peripheral edge of the mounting port, and the tip of the plug suction piece can be easily inserted into the insertion hole without being obstructed by the back surface of the peripheral edge. That. Further, even though the retaining portion faces the rear surface of the peripheral edge of the mounting opening and the bottom lid so as to come into contact with each other, the elasticity due to the bending can be used to absorb the mutual dimensional error and to surely come into contact with each other without fail. You can

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A handheld electric pot as an embodiment of the present invention shown in FIGS. 1 to 5 will be described below.

As shown in the overall configuration in FIGS. 1 and 2, a metallic outer case 1 accommodates an inner metallic container 2 to form a body 3.

A shoulder member 4 made of synthetic resin is fitted to the upper end of the outer case 1 from above, and a bottom member 5 made of synthetic resin is fitted to the lower end from below.

The outer flange 2b of the mouth 2a of the inner container 2 is received by the opening edge 4a of the shoulder member 4 from below, and the bottom portion and the bottom member 5 of the inner container 2 in this state are placed below the opening of the bottom member 5. A metal bottom cover 10 which is applied from the above and closes it, is connected with metal fittings 6 and 7 and screws 8 and 9 and attracts each other, and an outer case 1, an inner container 2, a shoulder member 4, a bottom member 5
Each is firmly integrated.

A heater 11 is wound around the outer periphery of the bottom of the inner container 2 and fastened with a screw 141 so that the content liquid is heated to boil and keep warm. The heat insulating material 12 is wrapped around the body of the inner container 2,
Prevents heat from escaping to the outside. As a result, the thermal efficiency of boiling water and heat retention is improved, and it is possible to prevent the exterior case 1 from becoming hot due to heat radiation.

At the front portion of the portion where the shoulder member 4 forms the mouth portion 3a of the body 3 which is continuous with the mouth portion 2a of the inner container 2, there is a spout 13 to one side of the upper end of the body 3. It is integrally formed as a beak-shaped protrusion protruding forward from the mouth portion 3a of the body 3 in a gutter shape,
The mouth portion 2a of the inner container 2 is communicated with the mouth portion 3a of the body 3.

Further, as shown in FIG. 1, a side handle 14 is integrally formed on the rear portion of the shoulder member 4 so as to be continuous at its upper end portion.

The lower end of the side handle 14 is applied to the outer surface of the lower end of the outer case 1, and the screw 1 is inserted from the inside of the outer case 1.
5 fixed. Therefore, the side handle 1
By holding 4 by hand, the body 3 can be freely handled, and the body 3 can be tilted in order to pour out the content liquid.

The lid 21 is detachably fitted to the mouth 3a of the body 3 by a screw fitting portion 132, and by unfastening the lid, the mouth 3a of the body 3 and the mouth 2a of the inner container 2 are removed. Is opened so that water or the like can be put into the inner container 2.

The lid 21 includes a resin-made main body case 22 fitted in the mouth portion 3a of the body 3, and a head case 23 which is placed on the main body case 22 from above and is located above the body 3. It is made hollow.

A heat shield cover 24 made of metal is applied to the bottom surface of the bottom of the main body case 22 and attached by screws 25. When the lid body 21 is fitted into the mouth portion 3a of the body 3, the heat shield cover 24 is attached. By facing the inner container 2 with each other, even if a large amount of high-temperature steam is generated from the content liquid heated in the inner container 2, the main body case 22 is prevented from being directly exposed to this without limit. The case 22 is prevented from being thermally deteriorated.

A seal packing 26 fitted on the outer periphery of the heat shield cover 24 is sandwiched between the bottom of the main body case 22 and the outer periphery of the heat shield cover 24, and the lid 21 is opened at the mouth of the body 3. When the click stopper 133 properly fitted to the regulating position 3a and biased by the spring 134 elastically engages the base of the spout 13, the seal packing 26 is crimped onto the mouth 2a of the inner container 2, The inner container 2 is adapted to be closed.

The heat shield cover 24 is provided with elongated openings 27 at the front and rear so as not to obstruct the pouring of the content liquid through the inside of the lid 21.

In order to pour out the content liquid through the inside of the lid body 21 in the main body case 22, one end side communicates with the spout 13 and the other end side is a container when the lid body 21 is properly closed. A pouring path 31 is integrally formed so as to have an opening 30 facing the inside of the inner container 2 of the body 3.

Further, there is a valve rod 33a which vertically penetrates the pouring path 31 at the opening 30, and the valve rod 33a is operated from the outside of the lid body 21 so that the valve body 33 at the lower end of the valve rod 33a.
b, a valve 33 for opening and closing by opening and closing the seal packing 40 having the opening 30 fitted on the outer peripheral portion is attached to the main body case 22.
It is provided at the position where the pouring path 31 can be opened and closed as appropriate.

Therefore, when the valve 33 is opened and the container 3 is tilted, the content liquid flows into the pouring path 31 through the opening 30,
It is spouted to the outside through the spout 13.

When the valve 33 closes the opening 30, the body 3 is closed.
Since the content liquid cannot flow into the pouring path 31 even if the is tilted, it is not poured out to the outside.

When the content liquid is heated and boiled, a large amount of steam is generated. Therefore, in order to allow this steam to escape to the outside to prevent abnormal pressurization, the steam generated in the container 3 is partially applied to the lid 21. A vapor vent passage 101 is provided to allow the vapor to escape to the outside. As shown in FIG. 1, the vapor vent passage 101 is formed as a roundabout passage in which one end side is opened on the lower surface of the lid body 21 facing the inside of the vessel 3 and the other end side is opened to a part of the spout passage 31, and the vessel body is formed. The structure of 3 delays the falling of the content liquid to the outside through the steam removal passage 101 due to tipping over so that the steam can escape to the outside.

The head case 23 of the lid 21 has a downwardly facing cylindrical wall 43 opening in the center thereof, and a pressing button 44 is fitted in the cylindrical wall 43 so as to be vertically movable from below, and the cylindrical wall 43 is fitted. The downward stepped portion 43a of the inner surface of the lid 43 prevents the upper portion from coming off, and at the retaining position of the stepped portion 43a, the pressing button 44 is exposed on the upper surface of the lid body 21 in a substantially flush manner. It can be pushed in from the outside.

Further, the head portion 33c of the valve rod 33a is fitted to the cylindrical wall 43 so as to be vertically movable from below, and an attitude holding mechanism 51 is constituted between the outer peripheral portion of the head portion 33c and the pressing button 44. ing.

The posture holding mechanism 51 holds the head portion 33c in the upper moving position and the lower moving position each time the pressing button 44 is pressed, and the valve element 33b moves the valve head 33c through the valve rod 33a. The valve 33 is alternately held in the open state and the closed state.

The main body case 22 is further provided with an intake passage 55 extending rearward from the opening 30 of the pouring path 31 and opening to the outer peripheral surface of the rear portion of the main body case 22. When the content liquid is poured out, the intake passage 55 introduces outside air through the gap between the lid body 21 and the mouth portion 3a of the body 3, and this introduces the outside air into the inner container 2 through the opening 30 of the pouring passage 31 and the like. It is designed to be inhaled. This prevents the content liquid from being poured into a negative pressure in the inner container 2 and causing pulsation in the content liquid to be dispensed or the inability to dispense.

As shown in FIG. 2, a plug receiver 102 for connecting a power source is provided on one side of the bottom member 5. The plug receiver 102 receives the magnet plug 103 and attaches the magnet plug 103 to the magnet and magnetic attraction members 104 and 10.
The plug receiver 102 holds a pair of left and right male terminals 106 for the electrical connection on the plug receiving surface 102b that receives the magnet plug 103, by the magnetic attraction between the five. This male terminal 106
The plug adsorbing member 105 is exposed at an intermediate position of the above, and is in contact with the adsorbing member 104 on the side of the magnet plug 103 so as to adsorb them.

Reference numeral 106a denotes a wiring connection fitting of the male terminal 106. A cover 5v for covering the wiring connection fitting 106a from above is formed integrally with the bottom member 5 to avoid contact with other wiring. ing.

Between the heater 11 and the male terminal 106, a boiling sensor 111 for detecting the boiling of the content liquid and switching the heating of the content liquid to a heat retention mode, a temperature during the heat retention of the content liquid and detecting the content liquid A heat retention sensor 112, which is turned on and off to maintain a predetermined heat retention temperature, detects that the content liquid has fallen below a predetermined amount and the temperature has risen above normal, and restricts energization to the heater 11 or a warning lamp. An empty cooking prevention sensor 113 that activates a buzzer and a thermal fuse 1 that cuts off electricity to the heater 11 due to an abnormal temperature when the empty cooking state occurs.
A control circuit 115 having 14 is provided.

The boiling prevention sensor 113 is attached to the outer surface of the same portion of the inner container 2 as shown in FIG.
The temperature sensor 112, the heat retention sensor 112, and the temperature fuse 114 are attached to the terminal portion 7a formed by the metal fitting 7 as shown in FIGS.
Attaches the flange portion of the same to the terminal portion 7a with the screw 142, and the heat retention sensor 112 and the temperature fuse 1
14 is each holding plate 112a and 114a. It is attached by pressing the terminal portion 7a with a pressing spring 131 attached by a screw 138.

The metal fitting 7 is attached to the bottom surface of the bottom of the inner container 2 by the metal fitting 6 at the terminal portion 7a, and the metal fitting 7 is connected to the bottom lid 10 by the foot portion 7b integrally formed with the terminal portion 7a. There is. Terminal part 7a
Has a projecting portion 7c which slightly projects from the bottom of the inner container 2 to both sides on the diametrical line. Since the projecting part 7c is located immediately below the diametrical line of the heater 11, Even if the winding is loosened and slips down, the overhanging portion 7c receives it and prevents it from falling down further.
It is possible to prevent a danger such as burning or igniting by touching the resin member such as.

On one side of the bottom member 5, a mounting opening 121 into which the plug receiver 102 is fitted from the outside is formed in a horizontally long rectangular shape, and a locking recess 122 is formed on the inner surface of the upper wall of the rear peripheral edge. .

On the other hand, the plug receiver 102 is also made of synthetic resin, has a rectangular outer peripheral shape that fits into the mounting opening 121 from the outside, and a projection 123 that engages with the locking recess 122 is formed on the upper rear surface of the outer periphery. There is.

As a result, the plug receptacle 102 is attached to the attachment opening 121, and the front end flange 102a thereof is attached to the attachment opening 12.
1 is fitted from the outside until it comes into contact with the outer end surface of the plug 1.
When the engaging recess 122 is formed on a part of the peripheral edge of the plug receiving member 102, the projection 123 and the engaging recess 122 are caught in the direction in which the plug receiving member 102 is pulled out from the mounting opening 121, so that the plug receiving member 102 can be prevented from coming off. it can.

The plug receptacle 102 is formed with an insertion hole 124 extending from the lower surface of the outer periphery of the plug receptacle 102 to the upper part thereof. The adsorption member 105 in the form of a plate is inserted into the insertion hole 124 from below. 2 and 3
As shown in FIG.
It faces the second plug receiving surface 102b.

The magnet 104 may be provided as a plate-shaped piece on the plug receiver 102 side, and the attraction member 105 may be provided on the magnet plug 103 side.

In this embodiment, in particular, the lower end of the suction member 105 is made to project downward from the plug receiver 102, and the suction member 1 protruding downward from the plug receiver 102.
05, the lower end portion of the peripheral edge back surface 121 of the mounting port 121
A retaining portion 105a that abuts a to prevent the plug receiver 102 from being detached is provided, and the lower end of the retaining portion 105a is extended downward so that it is below the bottom of the body 3, for example, the bottom of the bottom member 5. It is an abutting portion 105b that abuts on the bottom lid 10 to which it is attached more tightly.

With this structure, the suction member 1 is attached to the plug receiver 102 after it is fitted into the mounting opening 121 from the outside.
By fitting 05, the suction member 105 is assembled without obstructing the fitting of the plug receiver 102 into the mounting opening 121, and the retaining portion 105 at the lower end is attached.
a projects from the outer peripheral lower surface of the plug receiver 102
It comes into contact with the peripheral back surface 121a of the
02 is prevented from coming off from the mounting port 121 without requiring a dedicated coming-off prevention member or coming-off work, and this coming-off prevention state is simply extended below the lower end of the coming-off prevention part 105a. Since it is held by contacting the bottom cover 10 without a special mounting structure, it is possible to prevent the plug receiver 102 and the suction member 105 from rattling or being accidentally detached with a simple structure. It can be prevented, and the structure is simple and can be constructed at low cost.

Therefore, the plug receiver 102 is unlikely to loosen or rattling due to any external force applied during physical distribution or due to unexpected handling by the user, and the fear of accidental disconnection is eliminated. It

Further, in this embodiment, the retaining portion 105a formed at the lower end portion of the suction member 105 is the suction member 105.
6 has a same dimension A and B necessary for contacting the peripheral back surface 121a of the mounting opening 121 from both front and back surfaces that can face the magnet plug 103, and is bent so as to project in both front and back directions as shown in FIG. 6A. Therefore, the suction member 10
No matter which of the front and back surfaces of 5 is fitted so as to face the magnet plug 103, the portion of the retaining portion 105a protruding toward the side facing the magnet plug 103 abuts the peripheral back surface 121a of the mounting opening 121. , The retaining function can be exerted, and the suction member 10
Even if the insertion direction of 5 is reversed, there is an advantage that it does not make a mistake in mounting, and the retaining portion 105 aga projects toward the surface facing the magnet plug 103 and the mounting port 102.
Since the peripheral back surface 121a of the No. 1 abuts on each other, the suction member 10
The position of the insertion hole 124 of No. 5 is separated from the peripheral back surface 121a of the mounting opening 1021.
Insert the tip of the suction member 105 into the hole 1 without being disturbed by
It can be easily inserted into 24 and is easy to assemble. Further, the retaining portion 15a has a mounting opening 121.
While abutting and facing the peripheral back surface 121a and the bottom lid 10 of each other, the elasticity due to the bending is used to absorb the mutual dimensional error and to surely abut each other to prevent slipping out without rattling. be able to.

6B and 6C show examples of other bent shapes of the retaining portion 105a of the suction member 105. As shown in FIG.
In the case of the bent shapes shown in FIGS. 6 (a) and 6 (c), no matter how large or small the bottom lid 10 is inserted, the bottom lid 10 surely opposes and abuts against each other. The function can be stably obtained.

Of course, the retaining portion 105 may protrude from the magnet receiver 102 in a straight line, and may be brought into contact with the rear surface 121a of the peripheral edge of the mounting opening 121 to keep the magnet receiver 102 from retaining. Is.

[0050]

According to the present invention, the plug suction piece is fitted into the plug receptacle after it is fitted into the fitting opening from the outside, thereby slightly obstructing the fitting of the plug receptacle into the fitting opening. Without assembling the plug suction piece, the retaining part at the lower end protrudes to the lower surface of the outer periphery of the plug receiver and contacts the back surface of the peripheral edge of the mounting port, requiring a dedicated retaining member and retaining work. Do not stop it,
This retaining state is maintained without a special mounting structure by the contact portion formed by simply extending below the lower end of the retaining portion being brought into contact with the bottom lid, so that the retaining structure remains simple. It is possible to prevent rattling of the plug holder and plug suction piece, and to prevent accidental disengagement.
It is safe to use and has improved durability. Further, the structure is simple and the cost can be reduced.

In this case, the retaining portion of the plug receiving member formed on the plug attracting piece is bent so as to project from both the front and back surfaces, and the plug attracting piece is fitted so that either of the front and back surfaces faces the magnet plug. Also, if the part of the retaining part that protrudes to the side facing the magnet plug is in contact with the back surface of the peripheral edge of the mounting port so that the retaining function can be achieved, the insertion direction of the plug adsorption piece will be reversed. Even if it becomes, there is an advantage that it will not be a mounting mistake,
The retaining part projects toward the surface facing the magnet plug and abuts against the back surface of the peripheral edge of the mounting port, and the insertion hole of the plug adsorption piece is located away from the rear surface of the peripheral edge of the mounting port, obstructing the back surface of the peripheral edge. Since the tip of the plug suction piece can be easily inserted into the insertion hole without doing so, it can be easily assembled. Further, even though the retaining portion is in contact with the rear surface of the peripheral edge of the mounting opening or the bottom lid so as to face each other, the elasticity due to the bending is used to absorb the mutual dimensional error and to ensure reliable contact with each other to prevent the retaining. Like this
It is possible to prevent rattling.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an overall configuration of an electric pot showing an embodiment to which the present invention is applied.

FIG. 2 is a cross-sectional view showing only an upper part of the electric pot of FIG. 1 as seen from the front side.

FIG. 3 is a bottom view of the electric pot of FIG. 1 with a bottom lid removed.

4 is a cross-sectional view of a power supply connection portion of the electric pot of FIG.

5 is an exploded perspective view of the power supply connection portion of FIG. 4. FIG.

FIG. 6 is an explanatory view showing a retaining portion and an abutting portion of the suction member of each of the first to third embodiments of the present invention.

FIG. 7 is a cross-sectional view showing a power supply connection portion of a conventional electric pot.

[Explanation of symbols]

 3 body 5 bottom member 10 bottom lid 102 plug receiver 103 magnet plug 104 magnet 105 adsorption member 105a retaining portion 105b contact portion 121 mounting opening 121a peripheral back surface 122 locking recess 123 protrusion A, B protruding size

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-59-221980 (JP, A) Actually opened 58-8624 (JP, U) Actually opened 58-11426 (JP, U)

Claims (2)

(57) [Claims] 1. A plug receptacle for electrical connection with a magnetic plug for connecting a power source is externally fitted into a mounting opening opened to one side of a bottom portion of the body, and an upper surface of an outer periphery of the plug receptacle. The projection provided on the part is engaged with a part of the peripheral edge of the mounting port to prevent it from coming off, and the plug suction piece is inserted into the insertion hole from the lower surface of the outer periphery of the plug receiver to the upper part, and the middle part faces the plug receiving surface of the plug receiver. In the power supply connection device for the electric device, the lower end of the plug suction piece projects downward from the plug receiver, and the lower end of the plug suction piece protruding downward from the plug receiver is attached to the rear surface of the peripheral edge of the mounting port. Of the electrical device, which serves as a retaining portion that abuts against the stopper to prevent the plug receiver from coming off, and a lower end of the retaining portion is extended downward to be an abutting portion that comes into contact with the bottom lid. Power connection device. 2. The plug retainer retaining portion formed on the plug attracting piece protrudes in both front and back directions with the same size required for abutting the peripheral back surface of the mounting opening from both the front and back surfaces that can face the magnetic plug of the plug attracting piece. The power supply connection device for an electric device according to claim 1, wherein the power supply connection device is bent so as to do so.