JP3980546B2 - Electric appliance plug receiving device - Google Patents

Description

  The present invention relates to a plug receiving device in an electric heating apparatus such as a pot or an electric pan.

  In the electric heating apparatus, a plug receptacle for detachably connecting the plug of the power cord is attached. A configuration in which the plug receiver is attached to the mounting hole of the instrument body and a lead wire is connected to the electrode pin of the plug receiver will be referred to herein as a plug receiving device.

  The plug on the power cord side is provided with a pair of female electrode pins and a magnet piece, and the plug receiver on the instrument body side is provided with a pair of male electrode pins and a magnetic piece. Lead wires are connected to the electrode pins of the plug receptacle, and power is supplied to the internal heater, control board, and the like through the lead wires (see Patent Document 1).

  The connection structure between the lead wire and the electrode pin is, as shown in Patent Document 1, provided with a flat connection portion having a screw hole in the electrode pin, and a crimp type connection provided at the end portion of the lead wire. A structure is adopted in which the hole portion of the terminal is overlapped with the screw hole and both are connected by screws screwed in the direction perpendicular to the electrode pins. According to this connection structure, the connection terminal protrudes from the inner end face of the plug receiver in the length direction of the electrode pin, the lead wire is connected to the protruding end portion, the other end portion of the lead wire extends into the instrument body, and the heater Connected to.

In some cases, instead of the above-mentioned crimp type connection terminal with a hole, a crimp type connection terminal (tab-on connection terminal) having a caulking part may be used, and the caulking part may be caulked to the electrode terminal. Similarly, the connection terminal protrudes from the inner end face of the plug receiver in the length direction of the electrode pin, and a lead wire is connected to the protruding end.
JP-A-9-283228 (Example, FIG. 1)

  According to the above connection structure, there is a limit in shortening the length of the electrode pin because a screw hole is necessary for the electrode pin, and the connection terminal connected to the screw hole protrudes toward the inside of the instrument body. It becomes a structure. In addition, in the case of using a tab-on terminal, the electrode pin can be shortened by an amount that does not require a screw hole, but in terms of the structure in which the connection terminal protrudes toward the inside of the instrument body, Not different.

  As described above, the structure in which a part of the plug receiving device protrudes toward the inside of the appliance main body restricts the internal structure of the electric heating appliance such as a pot. For example, in a pot, when installing a heat insulating jacket that surrounds the inner container in order to increase thermal efficiency, and adopting a structure in which the lower end of the heat insulating jacket extends downward to near the bottom surface of the instrument body, it is provided near the bottom surface of the instrument body. It will interfere with the protruding part of the plug receiving device. As measures for preventing the interference, there are means for enlarging the diameter of the body member of the instrument body, and means for shifting the attachment position of the plug receiver to the outside of the body member while keeping the diameter of the body member as it is.

  However, enlarging the diameter of the body member is against the demand for a compact instrument. Further, shifting the mounting position of the plug receptacle outward has the disadvantage of impairing the external shape of the instrument.

  Accordingly, an object of the present invention is to reduce the thickness of the plug receiving device, thereby eliminating the influence on the internal structure and preventing the appearance from being affected.

  In order to solve the above-mentioned problems, the present invention provides a plug receiving device for an electric heating apparatus in which a plug receiver having a pair of electrode pins is attached to an apparatus body, and a lead wire is connected to the electrode pins. A connection terminal is provided, and the connection terminal is arranged and fixed in a direction orthogonal to the electrode pin, and a lead wire connected to the connection terminal is pulled out from the side surface of the plug receiver.

  According to the above structure, the connection terminal and the lead wire connected to the connection terminal are wired in the direction of the side surface of the plug receiver, so the amount of protrusion of the electrode pin and the connection terminal connected to the inward is reduced compared to the conventional case. To do. The “side surface” mentioned here includes both the left and right side surfaces and the upper and lower side surfaces.

  It is desirable to adopt a structure in which a connection connector is interposed in the middle of the lead wire. That is, the connection between the electrode pin and the connection terminal is generally fixed by caulking or the like, but in order to improve the workability of the fixing operation such as caulking, the plug receiver and the lead wire are both separated from the instrument body. It is necessary to do in. Since the plug receiver is attached by being inserted into the mounting hole of the instrument body, it is easy to attach and detach, but since the end portion of the lead wire is connected to the heater and the control board, it cannot be separated as it is. Therefore, the connecting connector is provided so that the lead wire on the plug receiving side can be separated at that portion.

  In addition, the structure which accommodated the said connection connector in the control board box, the structure which provided the board | substrate storage part and the connector storage part in the said control board box via the partition, and other than that, the said electrode pin and the connection terminal on the inner surface of the said plug receptacle The structure which attached the insulating board which covers charged parts, such as these, can also be taken.

  As described above, the plug device of the electric heating appliance according to the present invention is formed thin as a whole because the electrode pin and the connection terminal fixed to the electrode pin protrude less inward of the appliance main body. The influence on the internal structure of the instrument body and the influence on the external shape can be eliminated. Further, since the connection connector is interposed in the middle of the lead wire, the connection work between the lead wire and the plug receptacle can be easily performed. Further, by housing the connection connector in the control board box, water can be prevented from entering the connection connector, and sufficient insulation can be achieved.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an example of an electric pot provided with a plug receiving device according to the present invention. This electric pot accommodates the inner container 2 inside the pot body 1 and is attached with a lid 3 so as to be freely opened and closed. The pot body 1 includes a body member 4 and a shoulder member 5 provided at an upper end portion thereof. A front panel 7 is attached to the front surface of the body member 4, and a plug receiver 8 (see FIG. 3) is attached near the lower end of the rear surface. A nose portion 9 is provided at the front end of the shoulder member 5, and an operation portion 11 is provided at the nose portion 9. A discharge port opening 12 is provided in the lower plate 10 of the nose portion 9, and the lid 3 is attached via a hinge 13 on the side opposite to the nose portion 9. The handle 14 is formed in a semi-annular shape, and both end portions thereof are rotatably attached to both side surfaces of the shoulder member 5.

  FIG. 2 is an exploded perspective view of the electric pot upside down. In addition to the body member 4, the shoulder member 5, and the inner container 2, the heat insulating jacket 15 fitted to the outside of the inner container 2, the body A bottom plate 16 that closes the opening on the bottom surface of the member 4, a pump 17, a water level pipe 18, a discharge port 19, a control board box 21, and the like mounted on the bottom surface of the inner container 2 are shown.

  FIG. 3 is a cross-sectional view of the assembled state. In addition to the heater 22 provided at the bottom of the inner container 2, the mounting portion 21 a of the control board box 21 is disposed between the foot bracket 20 and the bottom plate 16 and the bottom surface of the body member 4. A state is shown in which it is sandwiched together with the part 4 a and fixed with screws 23.

  As shown in FIGS. 4A to 4D, the plug receiver 8 includes a plug receiver body 24 formed of a heat-resistant synthetic resin such as a phenol resin, a pair of left and right electrode pins 25 and 25, and a magnet. It consists of a body piece 26. The plug receiving body 24 has a fitting portion 28 having a square frame-shaped guide wall 27 on the front surface, and the outer end portions of the pair of electrode pins 25 and 25 protrude from the fitting portion 28. On the back surface of the plug receiver 8, the inner end side of each electrode pin 25 protrudes slightly to form crimped portions 29 and 29. A partition wall 31 is provided between the caulking portions 29 and 29.

  Further, an outward engagement collar 30 is provided outside the guide wall 27, and engagement claws 32, 32 protruding rearward are provided on the left and right side walls on the inner surface side. The engaging claws 32 are engaged with the mounting holes 33 of the body member 4 as will be described later. Further, U-shaped engaging portions 34, 34 having inwardly facing openings facing each other are provided on the upper portions of the caulking portions 29, 29. Further, a U-shaped mica plate engaging portion 35, 35 is provided at the upper part of the engaging claws 32, 32, and a mica plate receiving plate 36 is provided at the lower end of the partition wall 31.

  As shown in FIGS. 5 (a) to 5 (c), the connection structure of the two lead wires 37, 37 to the plug receiver 8 having the above-described structure is a crimp type with a hole at the end of each lead wire 37 in advance. The connection terminal 38 is connected, and the connection terminal 38 is arranged in a direction orthogonal to the electrode pin 25, that is, in a direction along the inner surface of the plug receiving body 24, and the hole portion is formed in the caulking portion 29 of the electrode pin 25. Mating. Then, the lead wire 37 is fitted inside the engaging portion 34 and pulled out from the upper side surface of the plug receiving body 24. Thereafter, the caulking portion 29 is caulked to fix the connection terminal 38 to the electrode pin 25.

  The plug receiver 8 is fitted into a mounting hole 33 provided in the vicinity of the bottom surface of the body member 4, and the engaging claw 32 is attached to an elastic locking piece 39 provided inward on both left and right edges of the mounting hole 33. And the engagement collar 30 is attached by engaging with the protrusion 41 provided on the outer surface side edge of the attachment hole 33.

  Further, the mica plate 40 is put on the back surface of the partition wall 31 and placed on the mica plate receiving plate 36, and the projecting piece 43 is inserted into and supported by the slit 42 provided on the receiving plate 36, and the upper mica plate engaging portion is further supported. 35 to hold. The mica plate 40 covers charged portions such as the caulking portion 29 and the connection terminal 38. Instead of the mica plate 40, other insulating plates may be used.

  As described above, with the plug receiver 8 connected to the lead wire 37 attached to the attachment hole 33 of the body member 4, as shown in FIG. 5B, the electrode pin 25, the connection terminal 38, the lead wire 37, and the like. Are all within the width L of the plug receiving body 24.

  Next, the processing of the lead wire 37 will be described with reference to FIGS. The lead wire 37 drawn upward from the upper side surface of the plug receiver 8 as described above is connected to the heater 22, the control board box 21 and the like of the instrument body 1, and the connection connector 44 is interposed in the middle thereof. . The lead wire 37 at the connection connector 44 can be separated into a separation-side lead wire 37a (see FIG. 6) on the connection connector 44 side and a fixed-side lead wire 37b on the instrument body 1 side. In the caulking operation of the lead wire 37 to the electrode pin 25 of the plug receiver 8, by connecting the separation-side lead wire 37a separated at the connection connector 44 and the plug receiver 8 separated from the instrument body 1, The operation can be easily performed.

  Next, means for protecting water and the like from entering the connector 44 will be described. The control board box 21 is provided with a board storage section 45 and a connector storage section 46 partitioned by a partition wall 47, and the connector 44 is stored in the connector storage section 46 (see the dashed line arrow in FIG. 6). Then, a box-shaped lid 48 is fitted into the control board box 21 to seal the inside (see FIG. 7). Accordingly, it is possible to prevent water from entering the connection connector 44 and to prevent a short circuit between the electronic component on the board housed in the board housing portion 45 and the power source.

  FIG. 8 shows the positional relationship in the circumferential direction of the plug receiver 8 with respect to the body member 4. That is, the body member 4 has bulging portions 49, 49 on the left and right sides of the front surface thereof, the water level pipe 18 is disposed on one bulging portion 49, and the heat insulating jacket 15 is disposed on the other bulging portion 49. A tip tube 50 for evacuation is disposed. The rear part of the body member 4 has a shape that swells in an elliptical shape slightly rearward with respect to the perfect inner container 2 and the perfect thermal insulation jacket 15 that is concentric with the inner container 2, and has a slightly wider space than both sides. . The battery case 51 and the plug receptacle 8 are provided on the left and right sides in that portion.

  A range including the plug receiver 8 attached to the attachment hole 33 of the body member 4, the lead wire 37 connected thereto, and the connection connector 44 interposed in the middle of the lead wire 37 constitutes a plug device.

  Next, an incidental structure is demonstrated based on FIG. 9, FIG. FIG. 9 shows the body member 4, the shoulder member 5, the front panel 7, the lower plate 10, the handle 14, and the like, and also shows the recess 60 provided on the front upper edge of the body member 4. Here, one of the peculiar structures is the attachment structure of the handle 14. That is, the left and right side surfaces of the shoulder member 5 are provided with a notch 53 opened at the lower end thereof, and the rotary shaft 54 provided on the inner surface of the distal end of the handle 14 is fitted into the notch 53. In that case, a closing piece 55 protruding upward is provided at the upper end edge of the body member 4 so as to close the gap of the notch 53 formed below the rotating shaft 54, and this is fitted into the gap. (See FIGS. 10A and 10B).

  Another unique structure is a through hole 56 provided in the upper portion of the bulging portions 49 of the body member 4. As described above, the front panel 7 is attached to the front surface of the body member 4, and the attachment surface 57 is formed thinly inside the stepped portion 58 that defines the range. When the mold for forming the mounting surface 57 is released, a so-called “turn-up” 59 (see FIG. 10E) is generated in a portion of the stepped portion 58 close to the upper end of the body member 4, and the appearance of the body member 4 is improved. It may be damaged. When the through hole 56 is provided directly below the upper side of the stepped portion 58, the occurrence of “turning” 59 can be prevented. Although “turn-up” 59 ′ is generated around the through hole 56 (see FIG. 10D), this portion is a portion hidden by the front panel 7, so there is no problem.

The perspective view of the electric pot using the plug receiving apparatus of Example 1 Exploded perspective view Cross-sectional view of the above (A) Front view of plug receiver same as above, (b) Cross-sectional view taken along line bb of (a) figure, (c) Plan view of same plug receiver, (d) Perspective view of plug receiver same as above. (A) A partially cut-away longitudinal rear view of the plug receiver in use, (b) A sectional view taken along line bb in (a), (c) A sectional view taken along line cc in (b). Exploded perspective view of bottom part Exploded perspective view of bottom part Cross-sectional plan view Partially exploded perspective view of the above (A) Partial side view of the same body member, (b) Cross-sectional view taken along line bb in (a), (c) Cross-sectional view taken along line cc in (b), (d) (b ) Cross-sectional view taken along line dd in the figure, (e) Cross-sectional view for explaining "turn over"

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pot main body 2 Inner container 3 Lid 4 Body member 4a Bottom surface part 5 Shoulder member 7 Front panel 8 Plug receptacle 9 Nose part 10 Lower board 11 Operation part 12 Opening opening 13 Hinge 14 Handle 15 Thermal insulation jacket 16 Bottom board 17 Pump 18 Water level Pipe 19 Discharge port 20 Foot bracket 21 Control board box 21a Mounting part 22 Heater 23 Screw 24 Plug receiving body 25 Electrode pin 26 Magnetic body piece 27 Guide wall 28 Fitting part 29 Caulking part 30 Engaging collar 31 Bulkhead 32 Engaging claw 33 Mounting hole 34 Engaging portion 35 Mica plate engaging portion 36 Mica plate receiving plate 37 Lead wire 37a Separation side lead wire 37b Fixed side lead wire 38 Connection terminal 39 Elastic locking piece 40 Mica plate 41 Projection line 42 Slit 43 Projection piece 44 Connection connector 45 Substrate storage part 46 Connector storage part 47 Partition wall 48 Lid 49 Swelling part 50 Chip tube 51 60 recess curling pond casing 52 lower plate 53 cut-out portion 54 rotary shaft 56 through hole 57 mounting surface 58 step portion 59, 59 '

Claims (2)

In plug-receiving device of the heating device which is connected a lead wire (37) to the mounting plug receptacle (8) to the instrument body (1), the electrode pin (25) having a pair of electrode pins (25, 25), the plug A fitting portion (28) to be fitted into the mounting hole (33) of the instrument body (1) is formed in the receiver (8), and the inner side of the fitting portion (28) The engaging claws (32, 32) projecting to the inner side are provided, and the engaging claws (32, 32) are provided on the left and right side edges of the mounting hole (33) inwardly with the elastic locking pieces (39, 39). ), A crimp-type connection terminal (38) with a hole is provided at the tip of the lead wire (37) , and the inner end portion of the electrode pin (25) protruding from the inner surface of the plug receiver (8) is provided. crimping section and (29), said connecting terminal (38), straight with respect to the electrode pin (25) With the hole arranged in a direction in which fit into caulking portion (29) of the electrode pin (25), fixed by performing caulking on the caulking portion (29), connected to the connection terminal (38) The drawn lead wire (37) is pulled out from the side surface of the plug receiver (8) , and the caulking portions (29, 29) and the connection terminals (38, 38) are connected to the left and right engaging claws (32, 32). A plug receiving device for an electric heating device, wherein the plug receiving device is provided so as to be positioned outside the left and right engaging claws (32, 32) . The appliance main body (1) is a pot main body composed of a body member (4) of an electric pot and a shoulder member (5) provided at the upper end thereof, and an inner container (2) is provided inside the appliance main body (1). ) And a heat insulating jacket (15) surrounding the inner container (2) is provided, and a lower end portion of the heat insulating jacket (15) extends downward from the pair of electrode pins (25, 25). The plug receiving device for an electric heating apparatus according to claim 1.

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