JP2004049741A - Cord reel mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the damage of a trunk member even if an external terminal is abnormally heated, when an interval between the external terminal of a cord reel mounted inside and the trunk member of a rice warmer body becomes smaller than a prescribed value by making the rice cooker/warmer compact. <P>SOLUTION: This cord reel mounting structure is so formed that a heat shielding cover 9 composed of a fire resistant material covers over a range including a part of the external terminal 12 of the cord reel 8 and the cord reel 8 is mounted inside the trunk member 5 via the heat shielding cover 9. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric appliance having a built-in cord reel such as a rice cooker (including a rice cooker) and a hot plate, and more particularly to an installation structure of the cord reel.
[0002]
[Prior art]
2. Description of the Related Art In a rice cooker or the like, there has been conventionally known a mounting structure in which a cord reel having a self-winding function is built in for convenience of storing a power cord, and only an outlet is exposed to the outside of an appliance outer shell at a tip of the power cord. (For example, see Japanese Patent Application Laid-Open No. 11-267016).
[0003]
The above-mentioned cord reel has a mainspring housed inside a metal case, and has a ratchet mechanism, etc., which holds a winding shaft by applying a spring force in a winding direction by the mainspring and holding the spring at a pulled-out length. The AC power is supplied to an external terminal connected to the fixed contact and a power supply lead wire connected to the fixed contact by sliding contact between the fixed contact provided on the case side and the movable contact provided on the winding shaft side. Like that.
[0004]
In the above-mentioned cord reel, the external terminal is directed toward the inner surface of the instrument outer shell, one of a plurality of protruding pieces provided on the outside of the case is screwed to the outer casing of the resin, and the other protruding piece is uneven on a part of the outer shell of the instrument. It is attached by fitting.
[0005]
[Problems to be solved by the invention]
However, according to the above-described mounting structure, if heat generation or short-circuit occurs due to poor connection of the power supply lead wire or intrusion of water in the external terminal serving as a charged portion, the heat is directly transmitted to the outer casing of the appliance, and There is a problem that the outer shell is abnormally heated and damaged. Such inconvenience becomes remarkable when a design is adopted in which the cord reel is mounted close to the inner surface of the outer casing of the appliance in order to make the rice cooker or the like compact.
[0006]
As a countermeasure to solve the above-mentioned problem, it is conceivable to mold the outer shell of the device with a flame-retardant resin, but it is inevitable that the product cost is greatly increased.
[0007]
Therefore, an object of the present invention is to provide a low-cost cord reel mounting structure capable of preventing abnormal rise in temperature of the outer casing of the cord reel as a measure against a case where the charged portion of the cord reel generates heat.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention relates to a cord reel mounting structure in which a power cord of a cord reel mounted inside an outer casing of an instrument is pulled out through a cord hole of the outer casing of the instrument, A configuration was adopted in which a heat-insulating cover made of a flame-retardant material covering the area including the terminal portion was put on, and the cord reel was attached to the outer casing of the device via the heat-insulating cover.
[0009]
According to the above configuration, when heat is generated in the external terminals of the cord reel, the heat is blocked by the flame-retardant heat-insulating cover, and abnormal rise in the temperature of the outer casing of the device is prevented.
[0010]
Further, as a more specific configuration, the instrument outer shell has a body member and a bottom member attached to an opening at the lower end thereof, the heat shield cover is attached to a shoulder member inside the body member, and the code reel is The heat shield cover is inserted into the inside from the open end to engage with a part of the heat shield cover, and a portion including a power cord lead-out portion is exposed from the open end of the heat shield cover. A configuration in which a part is engaged with and supported by the bottom member can be employed.
[0011]
According to the above configuration, the body member is turned upside down so that the open portion thereof is upward, the heat shield cover in which the code reel is inserted is inserted into the inside of the body member, and attached to the shoulder member, and then the bottom member is attached to the body member. By engaging and supporting a part of the code reel with the bottom member, the heat shield cover and the code reel are integrated with the outer shell of the device.
[0012]
More specifically, the mounting structure of the heat shield cover to the body member is such that the mounting pin of the heat shield cover is inserted into the insertion portion of the shoulder member and mounted, and the engagement structure of the code reel with the heat shield cover is: Due to the insertion of the projecting piece of the code reel into the slit formed at the open end of the heat shield cover, the engagement support structure for the bottom member of the code reel is provided with another projection of the code reel with respect to the engaging recess provided on the bottom member. It is possible to adopt a configuration in which pieces are inserted.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The rice cooker shown in FIG. 1 includes a jar main body 1 as an outer shell of the appliance and a lid 3 attached to the jar main body 2 so as to be freely opened and closed by a hinge shaft 2. At the front end of the jar main body 1, there is provided an operation unit 4 that stands up at the same height as the front edge of the lid 3. The jar body 1 includes a body member 5, a bottom member 6 for closing the lower end opening, a shoulder member 10 integrally provided inside the body member 5, and the like, and a rice cooker 7, a heating device, and the like inside. Is stored.
[0014]
A code reel 8 is accommodated in the rear end portion of the jar main body 1, that is, below the hinge shaft 2, and a heat shield cover 9 is placed over substantially the upper half of the code reel 8 (FIG. 2A). (B)). The code reel 8 has a conventionally well-known structure.
[0015]
That is, the cord reel 8 accommodates a mainspring inside a metal case 11, applies a spring force in a winding direction by the mainspring to a winding shaft, and holds a pulled-out cord to a predetermined length. The movable contact on the winding shaft side is slid on the fixed contact provided on the case 11 side, so that AC power is supplied to the external terminal 12 connected to the fixed contact. I have. A power plug 13 provided at the end of the power cord projects laterally from the lower end of the case 11. In addition, projecting pieces 14 and 15 for attachment are provided on the outer peripheral edge of the case 11 at the lower end and side. A mounting protrusion 16 having a screw hole is also provided, but is not used here. The cord reel 8 having the above configuration is commercially available as a ready-made product.
[0016]
As shown in FIGS. 1 and 2, the cord reel 8 is attached so that the surface on the side to which the external terminals 12 are connected is an outer surface and is parallel to the rear surface of the jar body 1. Therefore, hereinafter, the external terminal 12 side is referred to as a code reel outer surface 17 and the opposite surface is referred to as a code reel inner surface 18. The side from which the power plug 13 protrudes is referred to as a code reel lower part 19, and the opposite side is referred to as a code reel upper part 20.
[0017]
As shown in FIGS. 4A and 4B (the drawing is shown upside down for convenience), the heat shielding cover 9 has an outer cover 21 that covers the outer surface 17 of the code reel. , An inner surface cover portion 22 for covering the inner surface 18 of the code reel, and a peripheral surface cover portion 23 for covering the peripheral surface of the code reel 8. The outer cover 21 covers a range extending from the upper end of the outer surface 17 of the cord reel to a position beyond the central part of the external terminal 12, and the lower end edge 24 is horizontal. Further, the cover portion of the external terminal 12 becomes a bulging portion 25, and a required distance is provided between the external terminal 12 and the external terminal 12. The bulging portion 25 reaches the lower edge 24.
[0018]
The peripheral surface cover portion 23 covers left and right peripheral wall portions from the upper peripheral portion of the code reel 8, and the lower end thereof has the same height as the lower end edge 24 of the outer surface cover portion 21. A slit 26 is provided upward from one lower end of the peripheral surface cover portion 23 (that is, the lower end on the side corresponding to the one projecting piece 15 of the code reel 8). A mounting base 27 is provided on the upper portion of the peripheral surface cover 23, and a pair of left and right mounting pins 28 are provided on the upper end of the mounting base 27 so as to face upward. The roots of the two mounting pins 28 are connected by a reinforcing rib 29.
[0019]
In addition, a part for receiving the tip of the protruding piece 16 is provided on the inner surface of the convex part 31 at a part of the peripheral surface cover part 23 of the heat shield cover 9 (see FIG. 2B).
[0020]
After the lead wire is soldered to the external terminals 12 of the code reel 8, the code reel 8 is inserted into the heat shield cover 9 with the upper part of the code reel facing downward. The projection 16 is fitted into the projection 31 (see FIG. 4A). As shown in FIG. 3, the cord reel 8 and the heat shield cover 9 combined in this manner move the outer cover 21 of the heat shield cover 9 from the open portion of the jar body 1 upside down to the rear of the body member 5. Insert along the inner surface of the end and with the mounting pins 28, 28 facing downward. Inside the body member 5, the mounting pins 28 are inserted into a pair of insertion portions 32, 32 provided on the shoulder member 10 and opened upward.
[0021]
Thereafter, the bottom member 6 is put on the open portion of the jar body 1. At this time, the projecting piece 14 of the code reel 8 is fitted into the engaging recess 33 of the bottom member 6 (see FIG. 3). The power plug 13 is inserted into the plug hole 34 of the bottom member 6 from the inside, and is exposed in the recess 35 of the bottom member 6.
[0022]
In the state of FIG. 1 in which the cord reel 8 and the heat shield cover 9 are attached as described above, the heat shield cover is provided between the external terminal 12 which is a charged part to which a lead wire is soldered and the rear end surface of the body member 5. 9 is interposed. Since the heat-shielding cover 9 is flame-retardant, even if abnormal heat is generated at the external terminals 12, the heat is cut off by the outer-side cover 21 of the heat-shielding cover 9 and the temperature of the body member 5 rises. Can be prevented.
[0023]
【The invention's effect】
As described above, the present invention covers the area including the external terminal portion of the cord reel with the heat shield cover made of a flame-retardant material, and attaches the code reel to the outer casing of the device via the heat shield cover. Even if the external terminal portion of the cord reel generates abnormal heat, damage to the outer casing of the device can be prevented. Further, since only the heat shield cover is formed of the flame-retardant material without forming the entire outer casing of the flame-retardant material, it is possible to prevent an increase in product cost.
[Brief description of the drawings]
1 is a longitudinal sectional side view of an embodiment; FIG. 2 (a) is a longitudinal sectional side view of a cord reel part according to the embodiment; FIG. 3 (b) is a sectional view taken along line bb in FIG. 3 (a); FIG. 4A is an exploded perspective view of a code reel part according to the embodiment; FIG. 4B is a perspective view of a heat shield cover according to the embodiment;
DESCRIPTION OF SYMBOLS 1 Jar main body 2 Hinge axis 3 Lid 4 Operation part 5 Body member 6 Bottom member 7 Rice cooker 8 Code reel 9 Heat shield cover 10 Shoulder member 11 Case 12 External terminal 13 Power plug 14 Protrusion piece 15 Protrusion piece 16 Protrusion piece 17 Code reel Outer surface 18 Code reel inner surface 19 Code reel lower portion 20 Code reel upper portion 21 Outer cover portion 22 Inner cover portion 23 Peripheral cover portion 24 Lower edge 25 Swelling portion 26 Slit 27 Mounting base portion 28 Mounting pin 29 Reinforcement rib 31 Convex portion 32 Insertion portion 33 engagement recess 34 plug hole 35 recess

Claims (3)

In a cord reel mounting structure in which a power cord of a cord reel attached to the inside of an appliance is drawn out through a cord hole in the appliance, a shield including a flame-retardant material is provided in a range including an external terminal portion of the cord reel. A cord reel mounting structure, wherein a heat cover is covered, and the code reel is mounted on an outer casing of the apparatus via the heat shield cover. The instrument outer shell has a body member and a bottom member attached to a lower end opening of the body member, the heat shield cover is attached to a shoulder member inside the body member, and the cord reel is inserted from an open end of the heat shield cover to the inside. The heat shield cover is inserted into and engaged with a part of the heat shield cover, and a portion including a power cord lead-out portion is exposed from the open end of the heat shield cover, and a part of the exposed code reel is engaged with and supported by the bottom member. The cord reel mounting structure according to claim 1, wherein: The mounting structure of the heat shield cover to the body member is such that a mounting pin of the heat shield cover is inserted into the insertion portion of the shoulder member, and the cord reel is engaged with the heat shield cover by an open end of the heat shield cover. The engagement support structure for the bottom member of the code reel is based on the fitting of another projection of the code reel into the engagement recess provided on the bottom member. The cord reel mounting structure according to claim 2, wherein:

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