JP2020191937A - Electric appliance including cord winding part - Google Patents

Abstract

To provide an electric appliance including a cord winding part capable of guiding a direction of winding a power cord by a user to a predetermined direction.SOLUTION: An electric appliance 10 is the electric appliance including a cord winding part 60 capable of winding a power cord 52. The cord winding part includes a reel part 61 around which the power cord is wound, and a flange part 63 arranged at one end edge of the reel part. One or multiple projections 64 are formed on a peripheral surface of the flange part. The projection includes: a top part 65; a first peripheral surface 66 headed toward the top part in a first direction being the same as a power cord winding direction; and a second peripheral surface 67 headed toward the top part in a second direction opposite to the first direction. The first peripheral surface and the second peripheral surface are asymmetrically shaped with respect to a virtual line L obtained by connecting the top part to a center of the flange part.SELECTED DRAWING: Figure 13

Description

The present invention relates to an electric device including a cord winding portion such as an electric kettle, and more specifically, a cord winding portion capable of guiding a user to wind a power cord in a predetermined direction. It is about electrical equipment.

In an electric kettle, a kettle main body equipped with a heating means is placed on a power supply stand, power is supplied from the power supply stand to the kettle main body, and the heating means is energized (see, for example, Patent Document 1).

The power supply stand is provided with a power supply terminal for supplying power to the kettle body on the upper surface side, and a cord winding portion on the back surface side. The cord winding portion is provided with an annular reel portion in the center of the power supply stand, and a collar portion is formed on the lower edge of the reel portion to prevent the wound power cord from falling off. The power cord extends outward from the reel portion, and when in use, the power cord is pulled out while being unwound from the reel portion, and when not in use or when stored, the power cord is wound around the reel portion.

Japanese Patent No. 6123492

The collar portion has a disk shape or a shape in which a plurality of convex portions are formed toward the outer periphery in Patent Document 1. The disc-shaped collar portion has a symmetric shape with respect to the center of the collar portion, and even if the collar portion has a convex portion, the convex portion has a symmetric shape with respect to the virtual line connecting the top portion and the center of the collar portion.

Therefore, when winding the cord, the power cord can be wound in any direction. However, in order to suppress deterioration of the power cord, it is desirable to regulate the winding direction to only one direction.

An object of the present invention is to provide an electric device including a cord winding unit capable of guiding a user to wind a power cord in a predetermined direction.

The electric device according to the present invention is
It is an electric device equipped with a cord winding part that can wind the power cord.
The cord winding portion has a reel portion around which the power cord is wound and a collar portion at one end edge of the reel portion.
The collar portion has one or more convex portions formed on the peripheral surface thereof.
The convex portion is formed on the top, a first peripheral surface facing the top in the same first direction as the winding direction of the power cord, and a second direction opposite to the first direction. It has a second peripheral surface to face,
Regarding the virtual line connecting the top portion and the center of the flange portion, the first peripheral surface and the second peripheral surface have a non-symmetrical shape.

The first peripheral surface may have a convex shape in the radial direction, and the second peripheral surface may have a concave shape in the radial direction.

The first peripheral surface may have a shape that gently spreads radially outward from the second peripheral surface.

The first point of the first peripheral surface closest to the center of the collar portion and the first angle formed by the center of the collar portion and the top portion are the second points of the second peripheral surface closest to the center of the collar portion. It can be configured to be larger than the second angle formed by the center of the collar portion and the top portion.

The cord winding portion can be provided on the power supply stand.

The kettle body having a heating means can be placed on the power supply stand.

According to the electric device provided with the cord winding portion of the present invention, the shape of the convex portion provided on the collar portion is a non-symmetrical shape. Specifically, for example, the first peripheral surface has a convex shape that bulges outward in the radial direction, and the second peripheral surface has a concave shape that dents inward in the radial direction. As a result, when the power cord is wound around the reel portion in the same first direction as the recommended winding direction of the power cord, the power cord can be smoothly wound along the first peripheral surface. On the other hand, when the power cord is wound around the reel portion in the second direction, the power cord or the user's finger is caught on the second peripheral surface, so that the winding cannot be performed smoothly. Therefore, the winding direction of the power cord can be guided in the recommended direction, and deterioration of the power cord can be suppressed.

FIG. 1 is a perspective view of an electric kettle. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a perspective view of the power supply stand. FIG. 4 is a plan view of the power supply stand. FIG. 5 is a right side view of the power supply stand of FIG. FIG. 6 is a bottom view of the power supply stand around which the power cord is wound. FIG. 7 is a cross-sectional view taken along the line BB of FIG. FIG. 8 is a bottom perspective view showing a state in which the cord winding portion is removed from the power supply stand. FIG. 9 is a perspective view of the cord winding portion. FIG. 10 is a plan view of the cord winding portion. FIG. 11 is a bottom view of the cord winding portion. FIG. 12 is a right side view of the cord winding portion of FIG. FIG. 13 is an explanatory diagram showing a process of winding the power cord around the cord winding unit. FIG. 14 is a bottom view of a cord winding portion having a different convex shape of the collar portion. FIG. 15 is a bottom view of a cord winding portion having a different convex shape of the collar portion.

An electric device including the cord winding unit 60 of the present invention will be described with reference to the drawings. In the following, an electric kettle 10 which is a yakan type electric kettle 10 will be described as an example of an electric device, but the electric device is not limited to the electric kettle 10, and for example, a cooking device such as a coffee maker, a rice cooker, or a pot. , Home appliances such as electric kettles and heaters. Further, the electric kettle 10 to be described has a configuration in which the kettle main body 20 can be mounted on the power supply base 30, but it goes without saying that the power supply base 30 may be integrally configured with the electric device. ..

1 and 2 show an electric kettle 10. The illustrated electric kettle 10 has a configuration in which the kettle main body 20 can be mounted on the power supply base 30. The kettle main body 20 is provided with a main body container 21 for pouring water inside, a spout 22 communicating with the main body container 21 on the upper edge, and a handle 23 on the back side facing the spout 22. Further, the upper surface of the main body container 21 is closed with a lid 24 which is removable or can be opened and closed by a hinge or the like. A heating means 25 such as a heater is provided below the main body container 21 as shown in FIG. A power receiving unit 26 is recessed in the center of the lower surface of the kettle main body 20, and the heating means 25 is powered by the operation of the switch 28 provided on the handle 23 via the power receiving terminal 27 provided on the power receiving unit 26. Power is supplied from the table 30 side to heat the main body container 21 and boil water.

The power supply base 30 is a mounting base for the kettle main body 20 and supplies power to the power receiving terminal 27 in the mounted state. The power supply base 30 includes a pedestal main body 40, a power supply unit 50, a power cord 52, and a cord winding unit 60 as main configurations.

More specifically, as shown in FIGS. 3 to 5, the power supply base 30 includes a pedestal main body 40 having a dish-shaped mounting surface 41 on which the kettle main body 20 is mounted. The mounting surface 41 is formed with a feeding portion projecting hole 42 for projecting the feeding portion 50 substantially in the center. Further, a plurality of drain holes 43 are formed around the feeding portion projecting hole 42. The drain hole 43 communicates with the annular rib 43a provided on the lower surface side of the mounting surface 41 (see FIG. 8), so that the water accumulated on the mounting surface 41 can be discharged downward.

As shown in FIGS. 3, 4, and 7, the power feeding unit 50 fitted in the power receiving unit 26 of the kettle main body 20 is arranged so as to project upward from the power feeding unit projecting hole 42 of the mounting surface 41. As shown in FIG. 3, a power supply terminal 51 that can be electrically connected to the power reception terminal 27 is arranged on the upper surface of the power supply unit 50, and the kettle main body 20 is mounted on the mounting surface 41 of the power supply base 30. As a result, as shown in FIG. 2, the power receiving portion 26 of the kettle main body 20 is fitted into the feeding portion 50 so that the power feeding terminal 51 and the power receiving terminal 27 are electrically connected. The power supply terminal 51 is electrically connected to the power cord 52 as shown in FIG. The power cord 52 is provided with a plug (not shown) on the other end side so that it can be connected to a commercial power supply.

The pedestal body 40 has a peripheral wall 44 formed downward on the peripheral surface of the mounting surface 41, and is electrically connected to the power supply terminal 51 on the lower surface side of the power supply base 30 by the peripheral wall 44 and the mounting surface 41. A winding space 31 for accommodating the power cord 52 is formed. Further, one or a plurality of cord drawer holes 44a are recessed in the lower edge of the peripheral wall 44.

FIG. 8 is a perspective view of the lower surface side of the pedestal body 40 from which the cord winding portion 60 described later is removed from the power supply stand 30. The pedestal body 40 is formed with a substantially annular standing wall 45 on the inner peripheral side of the peripheral wall 44. The vertical wall 45 is formed with a cord through hole 45a, and the power cord 52 drawn out from the power feeding unit 50 extends to the outer periphery of the vertical wall 45 through the cord through hole 45a. In this embodiment, the cord through holes 45a are provided with two types having different opening widths, and depending on the type of the power cord 52, for example, a 2-wire power cord, a 3-wire power cord, or a thickness. The cord through hole 45a to be inserted can be selected. In the illustrated embodiment, the power cord 52 is a two-wire system.

Further, as shown in FIG. 8, the vertical wall 45 is formed with a locking receiving portion 46 for locking the cord winding portion 60. In the present embodiment, a claw-shaped locking piece 62 is provided on the cord winding portion 60 side as described later, and the locking receiving portion 46 is a slit into which the locking piece 62 can be engaged.

The annular rib 43a communicating with the drain hole 43 described above has a teardrop-shaped hole in FIG. 8, and the annular portion on the tip side having a large diameter is on the lower surface side of the power supply base 30 as shown in FIG. It is tilted diagonally to the right when viewed from. Therefore, the power cord 52 extends clockwise through the cord through hole 45a. The extending direction of the power cord 52 is the winding direction WD of the power cord 52 (see FIG. 6), which will be described later.

In addition, the pedestal main body 40 is provided with a boss hole 47 for screwing the cord winding portion 60, which will be described next, in the standing wall 45 or close to the standing wall 45. It is desirable that the boss holes 47 are formed in pairs at positions sandwiching the cord through holes 45a. Further, in the pedestal body 40, leg portions 48 with non-slip rubber are formed at a plurality of locations inside the peripheral wall 44.

As shown in FIGS. 6 and 7, a cord winding portion 60 for winding the power cord 52 is mounted on the winding space 31 formed in the pedestal main body 40 described above. A single drawing of the cord winding unit 60 is shown in FIGS. 9 to 12 as a perspective view, a plan view, a side view, and a bottom view. As will be understood with reference to the figure, the cord winding portion 60 has an annular reel portion 61 and a flange portion 63 at the lower end edge of the reel portion 61.

The reel portion 61 is formed in a substantially cylindrical shape, and as shown in FIG. 7, the power cord 52 is wound around the outer circumference. The reel portion 61 is formed to have a diameter larger than that of the standing wall 45 of the pedestal main body 40, and a claw-shaped locking piece 62 is formed on the inner peripheral surface as shown in FIGS. 9 and 10. The locking piece 62 can be engaged with the locking receiving portion 46 of the vertical wall 45 shown in FIG.

Further, the reel portion 61 is formed with a notch in the reel portion side cord through hole 61a that guides the power cord 52 drawn out from the cord through hole 45a of the vertical wall 45 to the outer peripheral side of the reel portion 61. Further, the reel portion 61 has a notch portion at a position facing the boss hole 47 (see FIG. 8) of the pedestal main body 40, and the notched portion has a flange portion 63 described below in the above-mentioned pedestal main body. A screw hole 63a that communicates with the boss hole 47 of the 40 is provided. A part of the screw holes 63a and 63a is formed so as to sandwich the reel portion side cord through hole 61a.

The collar portion 63 is provided on the lower end edge of the reel portion 61, and is configured by forming one or a plurality of convex portions 64 on the outer peripheral side. The collar portion 63 functions as a guide for preventing the power cord 52 wound around the reel portion 61 from falling off from the reel portion 61. In the present invention, as shown in FIGS. 9 to 12, the flange portion 63 is the top portion of the convex portion 64 farthest from the center O when the center of the collar portion 63 coincided with the center of the reel portion 61 is set to O. The shape of the convex portion 64 is non-symmetric with respect to the virtual line L connecting the 65. The reason for adopting the non-symmetrical shape is to give the collar portion 63 the ease and difficulty of winding the power cord 52, so that the user can naturally set the desired winding direction WD of the power cord 52. This is to try to guide. The shape, winding direction, winding ease, and winding difficulty of the convex portion 64 of the collar portion 63 will be described later.

Therefore, in the pedestal body 40, the power supply unit 50 to which the power cord 52 is attached is arranged in the power supply unit protrusion hole 42, and the power cord 52 is pulled out through the cord through hole 45a. In this state, the cord winding unit 60 raises the reel portion 61 as shown in FIGS. 6 and 7 while aligning the cord through hole 61a on the reel portion side with the cord through hole 45a through which the power cord 52 is passed. Cover the outer circumference of 45. As a result, the locking piece 62 of the cord winding portion 60 fits into the locking receiving portion 46 of the vertical wall 45 (shown by the circled C in FIG. 7). By fixing the screw hole 63a and the boss hole 47 with the screw 47a in this state (also shown by the circled portion D in FIG. 7), the power feeding unit 50, the power cord 52, and the cord winding unit 60 are attached to the pedestal body 40. A power stand 30 can be obtained.

Then, the power supply base 30 can be wound around the reel portion 61 as shown in FIGS. 6 and 7 by pulling the power cord 52 in an annular shape while passing the power cord 52 between the collar portion 63 and the peripheral wall 44.

Hereinafter, the shape, winding direction, winding ease, and winding difficulty of the convex portion 64 of the collar portion 63, which are the features of the present invention, will be described.

When the desired winding direction WD of the power cord 52 is set in FIG. 6, the convex portion 64 has a first peripheral surface 66 and a peripheral surface toward the top 65 in the same first orientation 66D as the winding direction WD. The peripheral surface toward the top 65 in the second direction 67D opposite to the winding direction WD is referred to as the second peripheral surface 67. At this time, the first peripheral surface 66 and the second peripheral surface 67 of the convex portion 64 have a shape that is non-symmetric with respect to the virtual line L connecting the top portion 65 of the convex portion 64 farthest from the center O of the flange portion 63. There is.

For example, as shown in FIGS. 9, 10 and 12, the convex portion 64 has a convex shape in which the first peripheral surface 66 bulges outward in the radial direction, and the second peripheral surface 67 has a concave shape recessed inward in the radial direction. can do. More preferably, the radius of curvature of the convex first peripheral surface 66 is formed larger than the radius of curvature of the concave second peripheral surface 67. By adopting this shape, when the power cord 52 is wound in the desired winding direction WD, the user's fingertip F holding the power cord 52 and / or the power cord 52 is indicated by an arrow α in FIG. As shown, the power cord 52 is wound around the reel portion 61 by being guided by the first peripheral surface 66 having a convex shape, exceeding the convex portion 64, and proceeding to the next convex portion 64. Therefore, the desired winding direction WD becomes a direction in which winding is easy.

On the other hand, when the power cord 52 is wound in the direction opposite to the winding direction WD, the user's fingertip F holding the power cord 52 and / or the power cord 52 has a concave shape as shown by an arrow β in FIG. When it hits a certain second peripheral surface 67 (indicated by a cross in the figure), it gets caught. Therefore, the direction opposite to the desired winding direction WD is the direction in which the power cord 52 is difficult to wind. Of course, it is possible to wind up beyond the convex portion 64, but in this case, the user's fingertip F holding the power cord 52 and / or the power cord 52 should carefully position the pedestal body 40 near the peripheral wall 44. Since it is necessary to pass the power cord and it takes time and effort to wind the power cord 52, the winding direction of the power cord 52 is naturally guided to be the winding direction WD described above.

As a result, the winding direction of the power cord 52 becomes the recommended desired direction WD, so that deterioration of the power cord 52 can be suppressed as compared with the case of winding in both directions. In particular, as shown in FIG. 8, when the power cord 52 extends from the cord through hole 45a toward the winding direction WD side (indicated by the arrow 68), the power cord 52 is in the opposite direction to the winding direction WD. When the power cord 52 is wound up, the power cord 52 may be bent significantly, which may accelerate deterioration. Further, as a result of the power cord 52 being greatly bent and bulging outward, the winding radius of the power cord 52 becomes large, and there is a possibility that the entire power cord 52 cannot be wound around the reel portion 61. However, there is an advantage that these problems can be solved by guiding the winding direction of the power cord 52 to the recommended direction WD.

In addition to defining the non-symmetrical shape of the convex portion 64 by making the first peripheral surface 66 a convex shape and the second peripheral surface 67 a concave shape, or in combination with the convex shape and the concave shape, the following It can be shaped.

For example, the first peripheral surface 66 may have a shape that gently spreads outward in the radial direction with respect to the second peripheral surface 67. That is, the second peripheral surface 67 has a shape that is steeper toward the outer side in the radial direction than the first peripheral surface 66. The shape of the convex portion 64 shown above and in FIGS. 6 and 7 satisfies this specification. As a result, when the power cord 52 is wound in the winding direction WD, the user's fingertip F holding the power cord 52 and / or the power cord 52 gradually expands as shown by the arrow α in FIG. Since it exceeds the convex portion 64 along 66, the desired winding direction WD can be set to a direction in which winding is easy. On the other hand, when wound in the opposite direction, the power cord 52 and / or the user's fingertip F holding the power cord 52 is caught on the steep second peripheral surface 67 as shown by the arrow β in FIG. 13, and the power cord 52 is wound. Since it is difficult to wind, the winding direction is naturally guided to the direction WD.

Further, as shown in FIGS. 6, 10, 12, and 13, the point at which the distance to the center O of the flange portion 63 is the shortest for the first peripheral surface 66 is defined for the first point 66a and the second peripheral surface 67. The point where the distance to the center O of the flange portion 63 is the shortest is defined as the second point 67a, and the angles formed by the first point 66a, the center O and the top portion 65 of the convex portion 64 are the first angle 66b, the second point 67a, and the center. When the angle formed by the top 65 of the O and the convex portion 64 is the second angle 67b, by taking the first angle 66b larger than the second angle 67b, the winding direction WD can be easily wound as described above. can do. In the illustrated embodiment, the first point 66a and the second point 67a are the same points with respect to the adjacent convex portions 64.

In the above, the cord winding portion 60 is provided with three convex portions 64, and the shape of each convex portion 64 is non-symmetrical. However, as shown in FIG. 14, only one convex portion 64a is non-symmetrical. The shape may be symmetric, and the other convex portions 64b may have a symmetric shape. In this case, the convex portion 64a having a non-symmetrical shape is located at a position close to counterclockwise from the extending position (arrow 68) of the power cord 52 when the recommended winding direction WD is clockwise. A peripheral surface 67 is provided, and when the power cord 52 is to be wound counterclockwise (β direction), the user's fingertip F holding the power cord 52 and / or the power cord 52 is caught on the second peripheral surface 67 (FIG. It is preferable that the power cord 52 has a structure that is difficult to wind.

Further, in the above embodiment, the first peripheral surface 66 and the second peripheral surface 67 each have a curved shape, but as shown in FIG. 15, the first peripheral surface 66 and the second peripheral surface 67 are a combination of linear shapes. It doesn't matter if there is. Of course, the shape may be a combination of a curved shape and a straight shape.

The above description is for explaining the present invention, and should not be construed as limiting or limiting the scope of the invention described in the claims. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

For example, by marking the flange 63 with an arrow indicating the recommended winding direction of the power cord 52, the winding direction of the power cord 52 can be further guided in the recommended direction.

10 Electric kettle 20 Kettle body 26 Power receiving part 30 Power supply stand 40 Pedestal body 50 Power supply part 52 Power cord 60 Cord winding part 61 Reel part 63 Collar part 64 Convex part 65 Top 66 First peripheral surface 67 Second peripheral surface O flange part Center WD Winding direction L Virtual line

Claims (6)

It is an electric device equipped with a cord winding part that can wind the power cord.
The cord winding portion has a reel portion around which the power cord is wound and a collar portion at one end edge of the reel portion.
The collar portion has one or more convex portions formed on the peripheral surface thereof.
The convex portion is formed on the top, a first peripheral surface facing the top in the same first direction as the winding direction of the power cord, and a second direction opposite to the first direction. It has a second peripheral surface to face,
With respect to the virtual line connecting the top and the center of the collar, the first peripheral surface and the second peripheral surface have a non-symmetrical shape.
An electrical device equipped with a cord take-up section. The first peripheral surface has a convex shape in the radial direction, and the second peripheral surface has a concave shape in the radial direction.
An electric device including the cord winding unit according to claim 1. The first peripheral surface gently spreads radially outward from the second peripheral surface.
An electric device including the cord winding unit according to claim 1 or 2. The first point of the first peripheral surface closest to the center of the collar portion and the first angle formed by the center of the collar portion and the top portion are the second points of the second peripheral surface closest to the center of the collar portion. Is larger than the second angle between the center of the brim and the top.
An electric device including the cord winding unit according to claim 1 or 2. The cord winding unit is provided on the power supply stand.
An electric device including the cord winding unit according to any one of claims 1 to 4. A kettle body having a heating means can be placed on the power supply stand.
An electric device including the cord winding unit according to claim 5.

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