Power cord arrangement structure

Abstract

The present invention relates to a power cord arrangement structure, and an object thereof is to provide a power cord arrangement structure that suppresses deterioration of the power cord. 【Solution means】When the power cord 5 is pulled in the left - right direction, the portion of the power cord 5 having the bushing 6 gradually bends more and more as it goes from the holding plate portion 9 toward the opening edge side of the main body case 1. When the power cord 5 is pulled to one side in the left - right direction, the distance between the portion where the power cord 5 or the bushing 6 hits the opening edge side of the main body case 1 in the cord holding component 3 and the holding plate portion 9 is longer than the distance between the portion where the power cord 5 or the bushing 6 hits the opening edge side of the main body case 1 in the cord holding component 3 and the holding plate portion 9 when the power cord 5 is pulled to the other side in the left - right direction. A power cord arrangement structure characterized by this.

Description

Technical Field

[0001] The present invention relates to a power cord arrangement structure used for electric devices and the like.

Background Art

[0002] Conventionally, an electric device is provided with a power cord that is drawn out to the outside through an opening of a main body case and has a plug at one end, and this power cord has a bushing that is held by a holding portion provided in the opening (note that Patent Document 1 below is a prior art document related to this).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a conventional electric device, for example, when the power cord is connected to an electrical outlet, the power cord may be pulled in a direction intersecting the opening direction of the opening of the main body case, that is, in the left-right direction. In such a case, the power cord drawn out from the opening hits the opening edge of the opening of the main body case and bends. When the position where the power cord hits the opening edge of the opening of the main body case in the power cord is the same, the copper wire of the power cord undergoes metal fatigue, and there is a problem of accelerating the deterioration period of the power cord.

[0005] Therefore, the present invention solves the above-described conventional problems and aims to provide a power cord arrangement structure that suppresses the deterioration of the power cord.

Means for Solving the Problems

[0006] And, to achieve this object, the present invention provides an arrangement structure of a power cord provided in an electrical appliance, comprising a cord holding component provided at an opening of a main body case, and a power cord drawn out to the outside through an insertion hole of the cord holding component and having a plug at one end. The power cord has a bushing held in the insertion hole of the cord holding component. The cord holding component has a cylindrical tube portion extending inward from an opening edge of the opening of the main body case, and a holding plate portion provided so as to close an inner side of the main body case in a central axis direction of the tube portion and having the insertion hole. A central axis of the insertion hole extends in a lateral direction. When viewed from a central axis direction of the insertion hole, a distance between the central axis of the insertion hole and one side in a left-right direction of the tube portion in the cord holding component is larger than a distance between the central axis of the insertion hole and the other side in the left-right direction of the cord holding component. When the power cord is pulled in the left-right direction, a portion of the power cord having the bushing gradually bends more greatly toward the opening edge side of the main body case from the holding plate portion. When the power cord is pulled to one side in the left-right direction, a distance between a portion where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate portion is longer than a distance between a portion where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate portion when the power cord is pulled to the other side in the left-right direction. When viewed from the central axis direction of the insertion hole, the distance between the central axis of the insertion hole and one side of the cord holding component in the left-right direction is shorter than the distance between the portion where the power cord or the bushing hits the opening edge side of the main body case of the cord holding component and the holding plate portion when the power cord is pulled to the other side in the left-right direction. It is characterized by this. Thus, the intended object is achieved.

Effect of the Invention

[0007] According to the present invention as described above, deterioration of the power cord can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 12

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0010] (Embodiment 1) FIG. 1 is an external perspective view of the electrical equipment according to the embodiment of the present invention. FIG. 2 is a cross-sectional view of the opening of the electrical equipment according to the embodiment of the present invention. FIG. 3 is a perspective view of the cord holding component of the electrical equipment according to the embodiment of the present invention and the power cord.

[0011] In FIGS. 1, 2, and 3, the main body case 1 of the electrical equipment is in a box shape with dimensions in the front - rear direction being smaller than those in the left - right direction. Inside the main body case 1, an air - conditioning unit (not shown) is provided. The main body case 1 is provided with an opening 2, which is a substantially square - shaped hole, at the lower part of one side surface in the left - right direction of the main body case 1. Through the opening 2, a power cord 5 electrically connected to the air - conditioning unit extends outside the main body case 1. The power cord 5 has a bushing 6 inserted into the power cord 5 and covering the power cord 5 at the root side, and a plug (not shown) connectable to an outlet at the tip. The bushing 6 is in a substantially cylindrical shape, and the power cord 5 is fitted into the hole of the bushing 6. A cord - holding component 3 for holding the bushing 6 of the power cord 5 is fixed to the opening 2. The cord - holding component 3 is arranged between the bushing 6 of the power cord 5 and the opening 2 of the main body case 1.

[0012] The cord - holding component 3 includes a cylindrical portion 7, a fixing portion 8, and a holding plate portion 9.

[0013] The cylindrical portion 7 is cylindrical and extends inward from the opening edge 13 of the opening 2, which is a hole in the main body case 1. The cylindrical portion 7 is in a substantially square - shaped cylindrical shape with its central axis extending in the horizontal direction, and the opening area gradually increases from one side (the left side in FIG. 2, the inner side of the main body case 1) to the other side (the right side in FIG. 2, the opening - edge side) in the central - axis direction. The cylindrical portion 7 has a holding plate portion 9 on one side (the left side in FIG. 2, the inner side of the main body case 1) in the central - axis direction and a fixing portion 8 on the other side (the right side in FIG. 2, the opening - edge side) in the central - axis direction.

[0014] The fixing part 8 is composed of a first ring part 10 and a second ring part 11 which are annular ribs extending outward from the outer surface of the cylindrical part 7. The first ring part 10 is arranged at the other end (the right side in FIG. 2) of the cylindrical part 7 in the central axis direction, and the second ring part 11 is arranged on one side (the left side in FIG. 2) of the cylindrical part 7 in the central axis direction with respect to the first ring part 10. There is a gap 12 between the first ring part 10 and the second ring part 11. The opening edge 13 of the opening 2 of the main body case 1 fits into this gap 12, and the cord holding component 3 is fixed to the main body case 1. The first ring part 10 of the fixing part 8 contacts the outer surface of the main body case 1, and the second ring part 11 contacts the inner surface of the main body case 1.

[0015] The holding plate part 9 is a substantially flat plate having an insertion hole 4 which is a substantially square hole at the central part. The holding plate part 9 is provided so as to close the opening on one side of the cylindrical part 7 in the central axis direction. The outer surface of the cylindrical bushing 6 is provided with a groove 6a extending in the circumferential direction. The opening edge of the insertion hole 4 fits into this annular groove 6a, and the bushing 6 having the power cord 5 inside is fixed to the cord holding component 3. The shape of the plane perpendicular to the central axis direction of the power cord 5 is fixed to be vertically long.

[0016] Note that the cylindrical part 7, the fixing part 8, and the holding plate part 9 are parts integrally formed of a resin material. The fixing part 8 of the cord holding component 3 is fixed to the opening edge 13 of the opening 2 of the main body case 1, the cylindrical part 7 of the cord holding component 3 extends inward from the fixing part 8 into the main body case 1, and the holding plate part 9 of the cord holding component 3 is arranged inside the main body case 1. Also, the main body case 1 is a part formed of a resin material.

[0017] FIG. 4 is an exploded view of the parts of the electric device according to the embodiment of the present invention. FIG. 5 is an exploded view of the cord holding component and the power cord of the electric device according to the embodiment of the present invention.

[0018] In FIGS. 4 and 5, the main body case 1 has a rear main body case 1A and a front main body case 1B.

[0019] The rear main body case 1A is the rear side that divides the main body case 1 into two parts between the front side and the rear side of the main body case 1. The front main body case 1B is the front side that divides the main body case 1 into two parts between the front side and the rear side of the main body case 1.

[0020] The opening 2 is composed of a rear opening 2A which is a substantially vertically long rectangular notch provided at the lower part of one side surface of the main body case 1 in the left - right direction of the rear main body case 1A, and a front opening 2B which is a substantially vertically long rectangular notch provided at the lower part of one side surface of the main body case 1 in the left - right direction of the front main body case 1B.

[0021] In this way, the main body case 1 is box - shaped, and the opening 2 is divided into the rear main body case 1A and the front main body case 1B respectively, and is configured to be dividable into the rear opening 2A and the front opening 2B. Thereby, it becomes easier to fit the gap 12 of the fixing part 8 of the cord holding part 3 to the opening edges of the rear opening 2A and the front opening 2B.

[0022] Also, the cord holding part 3 has a rear cord holding part 3A and a front cord holding part 3B. The rear cord holding part 3A and the front cord holding part 3B are parts divided into two by a vertical plane including the central axis of the cylindrical part 7 of the cord holding part 3.

[0023] The rear cord holding part 3A has a rear cylindrical part 7A, a rear fixing part 8A, a rear holding plate part (not shown), and a rear insertion hole (not shown). The rear fixing part 8A of the rear cord holding part 3A fits into the rear opening 2A which is a notch of the rear main body case 1A.

[0024] Similarly, the front cord holding part 3B has a front cylindrical part 7B, a front fixing part 8B, a front holding plate part 9B, and a front insertion hole 4B. The front fixing part 8B of the front cord holding part 3B fits into the front opening 2B which is a notch of the front main body case 1B. Thereby, it becomes easier to fit the groove 6a of the bushing 6 to the opening edges of the rear insertion hole (not shown) and the front insertion hole 4B. In the present invention, although the main body case 1 and the cord holding part 3 are divided front - to - rear, the same effect can be obtained with a configuration divided up - and - down or left - and - right.

[0025] FIG. 6 is a cross-sectional view of an opening of an electrical device according to an embodiment of the present invention. When viewed from above the power cord 5, the center of the power cord 5 is located on the central axis of the insertion hole 4. FIG. 7 is a cross-sectional view of an opening of an electrical device according to an embodiment of the present invention. The dotted line indicates the central axis of the power cord. When viewed from above the power cord 5, the power cord 5 is in a state of being pulled to one side in the left-right direction. FIG. 8 is a cross-sectional view of an opening of an electrical device according to an embodiment of the present invention. The dotted line indicates the central axis of the power cord. When viewed from above the power cord 5, the power cord 5 is in a state of being pulled to the other side in the left-right direction.

[0026] As shown in FIGS. 6, 7, and 8, the outer dimensions of the bushing 6 are shaped to become smaller as it goes from the retaining plate portion 9 side toward the fixing portion 8 (the opening edge 13 of the main body case 1). When the power cord 5 is pulled in the left-right direction, the portion of the power cord 5 having the bushing 6 gradually bends more greatly as it goes from the retaining plate portion 9 toward the fixing portion 8 (the opening edge 13 of the main body case 1).

[0027] The central axis of the insertion hole 4 extends in the horizontal direction. When viewed from the central axis direction of the insertion hole 4, the distance between the central axis of the insertion hole 4 and one side in the left-right direction of the cylindrical portion in the cord holding component 3 is larger than the distance between the central axis of the insertion hole 4 and the other side in the left-right direction of the cord holding component 3.

[0028] In the above configuration, when the power cord 5 is pulled to one side in the left-right direction (see FIG. 7), the distance between the portion where the power cord 5 or the bushing 6 hits the fixing portion 8 (the opening edge 13 of the main body case 1) in the cord holding component 3 and the retaining plate portion 9 is longer than the distance between the portion where the power cord 5 or the bushing 6 hits the fixing portion 8 (the opening edge 13 of the main body case 1) in the cord holding component 3 and the retaining plate portion 9 when the power cord 5 is pulled to the other side in the left-right direction (see FIG. 8). As a result, the location where the power cord 5 bends when the power cord 5 is pulled to one side in the left-right direction is different from the location where the power cord 5 bends when the power cord 5 is pulled to the other side in the left-right direction, reducing the metal fatigue of the copper wire in the power cord 5 and improving the durability of the power cord 5.

[0029] Also, when viewed from the central axis direction of the insertion hole 4, the distance between the central axis of the insertion hole 4 and one side in the left - right direction of the cord holding component 3 is shorter than the distance between the portion where the power cord 5 or the bushing 6 hits the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3 and the holding plate portion 9 when the power cord 5 is pulled to the other side in the left - right direction. Thereby, when the power cord 5 is pulled in the left - right direction, it is possible to suppress the large bending of the portion of the power cord 5 having the bushing 6.

[0030] Also, when the power cord 5 is pulled to one side in the left - right direction, the power cord 5 hits the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3, and when the power cord 5 is pulled to the other side in the left - right direction, the bushing 6 hits the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3. That is, when the power cord 5 is pulled to one side in the left - right direction and the power cord 5 hits the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3, the portion of the power cord 5 hitting the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3 bends the most. On the other hand, when the power cord 5 is pulled to the other side in the left - right direction and the bushing 6 hits the fixing portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3, the tip portion of the bushing 6 in the power cord 5 bends the most. Thereby, the most bent portion of the power cord 5 when the power cord 5 is pulled to one side in the left - right direction is different from the most bent portion of the power cord 5 when the power cord 5 is pulled to the other side in the left - right direction, the metal fatigue of the copper wire in the power cord 5 is reduced, and the durability of the power cord 5 is improved.

[0031] (Embodiment 2) FIG. 9 is a schematic perspective view of a cord holding component and a power cord of the electric device according to Embodiment 2 of the present invention. FIG. 10 is a cross-sectional view of an opening of the electric device according to Embodiment 2 of the present invention, showing a state in which the center of the power cord 5 is located on the central axis of the insertion hole 4 when viewed from the side. FIG. 11 is a cross-sectional view of an opening of the electric device according to Embodiment 2 of the present invention, where the dotted line indicates the central axis of the power cord, and shows a state in which the power cord 5 is pulled to one side in the vertical direction when viewed from the side. FIG. 12 is a cross-sectional view of an opening of the electric device according to Embodiment 2 of the present invention, where the dotted line indicates the central axis of the power cord, and shows a state in which the power cord 5 is pulled to the other side in the vertical direction when viewed from the side. For components similar to those in Embodiment 1, the same reference numerals are given, and detailed descriptions thereof are omitted.

[0032] As shown in FIGS. 9, 10, 11, and 12, the difference from Embodiment 1 is the vertical position in the holding plate portion 9 of the insertion hole 24, which is a substantially rectangular hole. In other words, it is the vertical distance between the power cord 5 and the fixed portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3.

[0033] In the above configuration, when the power cord 5 is pulled to one side in the vertical direction (see FIG. 11), the distance between the portion where the power cord 5 or the bushing 6 hits the fixed portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3 and the holding plate portion 9 is longer than the distance between the portion where the power cord 5 or the bushing 6 hits the fixed portion 8 (the opening edge 13 of the main body case 1) side in the cord holding component 3 and the holding plate portion 9 when the power cord 5 is pulled to the other side in the vertical direction (see FIG. 12). As a result, the bending points of the power cord 5 when it is pulled to one side in the vertical direction and when it is pulled to the other side in the vertical direction are different, reducing the metal fatigue of the copper wire in the power cord 5 and improving the durability of the power cord 5.

[0034] Also, when the power cord 5 is pulled to one side in the vertical direction, the distance between the part where the power cord 5 or the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3 and the holding plate part 9, and when the power cord 5 is pulled to the other side in the vertical direction, the distance between the part where the power cord 5 or the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3 and the holding plate part 9 are different from the distance between the part where the power cord 5 or the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3 and the holding plate part 9 when the power cord 5 is pulled to one side in the horizontal direction, and the distance between the part where the power cord 5 or the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3 and the holding plate part 9 when the power cord 5 is pulled to the other side in the horizontal direction. As a result, the bending points in the four directions of up, down, left, and right are different, reducing the metal fatigue of the copper wire in the power cord 5 and improving the durability of the power cord 5.

[0035] Also, when viewed from the central axis direction of the insertion hole 4, the distance between the central axis of the insertion hole 4 and one side in the vertical direction of the cord holding part 3 is shorter than the distance between the part where the power cord 5 or the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3 and the holding plate part 9 when the power cord 5 is pulled to the other side in the vertical direction. Thereby, when the power cord 5 is pulled in the vertical direction, it is possible to suppress the large bending of the part of the power cord 5 having the bushing 6.

[0036] Also, when the power cord 5 is pulled to one side in the vertical direction, the power cord 5 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3, and when the power cord 5 is pulled to the other side in the vertical direction, the bushing 6 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3. That is, when the power cord 5 is pulled to one side in the vertical direction and the power cord 5 hits the fixing part 8 (the opening edge 13 of the main body case 1) side in the cord holding part 3, in the power cord 5, the fixing part 8 of the cord holding part 3 (the main body The part that hits the opening edge 13) side of the base 1 bends the most. On the other hand, when the power cord 5 is pulled to the other side in the vertical direction and the bushing 6 hits the fixing part 8 (the opening edge 13) side of the cord holding part 3 of the main body case 1), the tip part of the bushing 6 bends the most in the power cord 5. As a result, the location where the power cord 5 bends the most when the power cord 5 is pulled to one side in the vertical direction is different from the location where the power cord 5 also bends when the power cord 5 is pulled to the other side in the vertical direction, reducing the metal fatigue of the copper wire in the power cord 5 and improving the durability of the power cord 5.

Industrial Applicability

[0037] The power cord arrangement structure according to the present invention is useful for electric devices, etc. as a structure of the power cord outlet that enables improvement of the durability of the power cord.

Explanation of Reference Numerals

[0038] 1 Main body case 1A Rear main body case 1B Front main body case 2 Opening 2A Rear opening 2B Front opening 3 Cord holding part 3A Rear cord holding part 3B Front cord holding part 4 Insertion hole 4B Front insertion hole 5 Power cord 6 Bushing 6a Groove 7 Cylindrical part 7A Rear cylindrical part 7B Front cylindrical part 8 Fixing part 8A Rear fixing part 8B Front fixing part 9 Holding plate part 9B Front holding plate part 10 First ring part 11 Second ring part 12 Gap 13 Opening edge 24 Insertion hole

Claims

1. A power cord arrangement structure provided in an electrical appliance, comprising: a cord holding component provided at an opening of a main body case; and a power cord drawn out to the outside through an insertion hole of the cord holding component and having a plug at one end. The power cord: has a bushing held in the insertion hole of the cord holding component; The cord holding component: has a cylindrical tube portion extending inward from an opening edge of the opening of the main body case, and a holding plate portion provided so as to close the inner side of the main body case in the central axis direction of the tube portion and having the insertion hole; the central axis of the insertion hole extends in the horizontal direction; when viewed from the central axis direction of the insertion hole, the distance between the central axis of the insertion hole and one side in the left-right direction of the tube portion of the cord holding component is greater than the distance between the central axis of the insertion hole and the other side in the left-right direction of the cord holding component; when the power cord is pulled in the left-right direction, the portion of the power cord having the bushing gradually bends more greatly toward the opening edge side of the main body case from the holding plate portion; when the power cord is pulled to one side in the left-right direction, the distance between the portion where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate portion is: when the power cord is pulled to the other side in the left-right direction, longer than the distance between the portion where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate portion; when viewed from the central axis direction of the insertion hole, the distance between the central axis of the insertion hole and one side in the left-right direction of the cord holding component is: when the power cord is pulled to the other side in the left-right direction, shorter than the distance between the portion where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate portion. A power cord arrangement structure characterized by this.

2. When the power cord is pulled to one side in the left-right direction, the power cord hits the opening edge side of the main body case in the cord holding component; When the power cord is pulled to the other side in the left-right direction, the bushing hits the opening edge side of the main body case in the cord holding component. The power cord arrangement structure according to Claim 1, characterized by this.

3. When the power cord is pulled to one side in the vertical direction, the distance between the part where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate part is The power cord arrangement structure according to claim 1, characterized in that when the power cord is pulled to the other side in the vertical direction, the distance between the part where the power cord or the bushing hits the opening edge side of the main body case in the cord holding component and the holding plate part is longer.

4. When viewed from the central axis direction of the insertion hole, the distance between the central axis of the insertion hole and the lower side in the vertical direction of the cord holding component is The power cord arrangement structure according to claim 3, characterized in that when the power cord is pulled to the upper side in the vertical direction, the distance between the part where the power cord or the bushing hits the opening edge side of the main body case of the cord holding component and the holding plate part is shorter.

5. When the power cord is pulled to the upper side in the vertical direction, the power cord hits the opening edge side of the main body case in the cord holding component, The power cord arrangement structure according to claim 4, characterized in that when the power cord is pulled to the lower side in the vertical direction, the bushing hits the opening edge side of the main body case in the cord holding component.

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