Power line configuration structure

Abstract

A power line arrangement structure is characterized in that when a power line (5) is pulled in the left-right direction, the bending of a portion of the power line (5) having a sleeve (6) from a holding plate portion (9) to the opening edge side of a main body case (1) is gradually increased, and when the power line (5) is pulled in the left-right direction, the bending of the portion of the power line (5) having the sleeve (6) is gradually increased. The distance between the holding plate portion (9) and the portion where the power line (5) or the sleeve (6) abuts against the opening edge side of the main body case (1) in the power line holding member (3) is longer than the distance between the holding plate portion (9) and the portion where the power line (5) or the sleeve (6) abuts against the opening edge side of the main body case (1) in the power line holding member (3) when the power line (5) is pulled toward the other side in the left-right direction.

Description

Technical Field

[0001] This invention relates to a power cord configuration structure for electrical equipment and the like. Background Technology

[0002] Currently, electrical equipment includes a power cord that extends outward through an opening in the main body housing and has a plug at one end, and the power cord has a sleeve that is held in a retaining portion in the opening (in addition, the following patent document is related to this).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-158225 Summary of the Invention

[0006] In this existing electrical equipment, for example, when the power cord is connected to a power outlet, the power cord is sometimes pulled in a direction that intersects with the opening of the main body housing, or in a left-right direction. In this case, the power cord extending from the opening bends at the edge of the opening of the main body housing. When the position where the power cord abuts against the edge of the opening of the main body housing is the same, the copper wire of the power cord experiences metal fatigue, leading to premature deterioration of the power cord.

[0007] This invention provides a power line configuration structure to suppress power line degradation.

[0008] The power cord configuration structure of the electrical device of the present invention is characterized by comprising: a power cord holding member, which includes a through hole and is disposed at an opening of the main body housing; and a power cord, which extends outward through the through hole of the power cord holding member and has a plug at one end, the power cord having: a sleeve held in the through hole of the power cord holding member; the power cord holding member having: a cylindrical portion extending from the opening edge of the opening of the main body housing toward the inside of the main body housing; and a holding plate portion disposed in such a way as to close the inside of the main body housing in the direction of the central axis of the cylindrical portion, and having the through hole, the central axis of the through hole extending laterally, and when viewed from the direction of the central axis of the through hole, the central axis of the through hole is perpendicular to the power cord. The distance on one side of the cylindrical portion of the cord holding member in the left-right direction is longer than the distance between the central axis of the insertion hole and the other side of the cord holding member in the left-right direction. When the power cord is pulled in the left-right direction, the portion of the power cord with the sleeve gradually increases as it bends from the holding plate portion toward the opening edge of the main body shell. When the power cord is pulled to one side in the left-right direction, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord holding member and the holding plate portion is longer than the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord holding member and the holding plate portion when the power cord is pulled to the other side in the left-right direction.

[0009] Invention Effects

[0010] As described above, according to the present invention, the deterioration of the power cord can be suppressed. Attached Figure Description

[0011] Figure 1 This is a perspective view of the electrical equipment according to Embodiment 1 of the present invention.

[0012] Figure 2 This is a cross-sectional view of the opening of the electrical equipment.

[0013] Figure 3 This is a schematic 3D view of the power cord holding component and the power cord of the electrical equipment.

[0014] Figure 4 This is a breakdown diagram of the components of the electrical equipment.

[0015] Figure 5 This is a diagram showing the power cord holding component and the power cord of the electrical equipment.

[0016] Figure 6 This is a cross-sectional view of the opening of the electrical equipment.

[0017] Figure 7This is a cross-sectional view of the opening of the electrical equipment.

[0018] Figure 8 This is a cross-sectional view of the opening of the electrical equipment.

[0019] Figure 9 This is a schematic perspective view of the power cord holding component and power cord of the electrical device according to Embodiment 2 of the present invention.

[0020] Figure 10 This is a cross-sectional view of the opening of the electrical equipment.

[0021] Figure 11 This is a cross-sectional view of the opening of the electrical equipment.

[0022] Figure 12 This is a cross-sectional view of the opening of the electrical equipment.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Main shell

[0025] 1A Rear Main Shell

[0026] 1B Front Main Shell

[0027] 2. Opening

[0028] 2A Rear Opening

[0029] 2B Front opening

[0030] 3 Power cord retaining components

[0031] 3A Rear Power Cord Retention Component

[0032] 3B Front power cord retainer

[0033] 4 Through-hole

[0034] 4B Front Through Hole

[0035] 5. Power cord

[0036] 6 casings

[0037] 6a slot

[0038] 7. Cylinder section

[0039] 7A Rear Cylinder Section

[0040] 7B Front section

[0041] 8. Fixing part

[0042] 8A Rear Fixing Part

[0043] 8B Front Fixing Part

[0044] 9. Holding plate section

[0045] 9B Front retaining plate section

[0046] 10 Part 1

[0047] 11 Part 2

[0048] 12 gaps

[0049] 13 Opening edge

[0050] 24 through holes Detailed Implementation

[0051] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0052] (Implementation Method 1)

[0053] Figure 1 This is a perspective view of the electrical equipment according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of the opening of the electrical device according to an embodiment of the present invention. Figure 3 This is a schematic perspective view of the power cord holding component and power cord of the electrical equipment according to an embodiment of the present invention.

[0054] exist Figure 1 , Figure 2 , Figure 3 In this device, the main body housing 1 is a box shape with a front-to-back dimension smaller than its left-to-right dimension. An air conditioning unit (not shown) is housed within the main body housing 1. An opening 2, a roughly quadrilateral hole, is provided on the lower part of one side of the main body housing 1 in the left-to-right direction. A power cord 5, electrically connected to the air conditioning unit, extends outward from the main body housing 1 through the opening 2. At the base of the power cord 5, a sleeve 6 is provided, which is inserted into and covers the power cord 5. A plug (not shown) is located at the front end of the power cord 5, allowing it to connect to a socket. The sleeve 6 is roughly cylindrical, and the power cord 5 is inserted into the hole in the sleeve 6. A power cord retaining member 3 is fixed to the opening 2 to hold the sleeve 6 of the power cord 5. The power cord retaining member 3 is positioned between the sleeve 6 of the power cord 5 and the opening 2 of the main body housing 1.

[0055] The power cord retaining component 3 has a cylindrical part 7, a fixing part 8, and a retaining plate part 9.

[0056] The cylindrical portion 7 is a cylindrical component extending from the opening edge 13 of the opening 2 in the main body shell 1 towards the inside of the main body shell 1. The cylindrical portion 7 is a roughly quadrilateral cylindrical shape extending horizontally along its central axis, with the opening area increasing from one side along the central axis direction (…). Figure 2 (From the left side of the middle, inside the main shell 1) to the other side ( Figure 2The diameter gradually increases from the right side of the center to the edge of the opening. The cylindrical section 7 gradually increases in size on one side of its central axis (...). Figure 2 The left side (inner side of the main shell 1) has a retaining plate portion 9, on the other side of the central axis direction of the cylindrical portion 7 ( Figure 2 The middle part (right side, opening edge side) has a fixing part 8.

[0057] The fixing part 8 consists of two annular ribs extending outward from the outer surface of the cylindrical part 7, namely the first annular part 10 and the second annular part 11. The first annular part 10 is located on the other side of the central axis direction of the cylindrical part 7. Figure 2 At the right end of the middle section, the second ring portion 11 is positioned on one side of the central axis direction of the cylindrical portion 7. Figure 2 (Left side). A gap 12 is provided between the first ring portion 10 and the second ring portion 11. The power cord retaining member 3 is fixed to the main body housing 1 by inserting the opening edge 13 of the opening 2 of the main body housing 1 into the gap 12 of the fixing portion 8. The first ring portion 10 of the fixing portion 8 contacts the outer surface of the main body housing 1, and the second ring portion 11 contacts the inner surface of the main body housing 1.

[0058] The retaining plate portion 9 has an approximately flat plate structure and a through hole 4, which is roughly quadrilateral in shape, in its center. The retaining plate portion 9 is provided with an opening on one side of the central axis of the closed cylindrical portion 7. A groove 6a extending in the circumferential direction is provided on the outer surface of the cylindrical sleeve 6. The opening edge of the through hole 4 is inserted into the annular groove 6a, and the sleeve 6, which contains the power cord 5, is fixed to the power cord retaining member 3. The shape of the power cord 5 in the vertical plane relative to the central axis direction is fixed as a longitudinal shape.

[0059] Furthermore, the cylindrical portion 7, the fixing portion 8, and the retaining plate portion 9 are integrally molded from resin material. The fixing portion 8 of the power cord retaining member 3 is fixed to the opening edge 13 of the opening portion 2 of the main body shell 1. The cylindrical portion 7 of the power cord retaining member 3 extends from the fixing portion 8 toward the inside of the main body shell 1. The retaining plate portion 9 of the power cord retaining member 3 is disposed inside the main body shell 1. In addition, the main body shell 1 is also a component molded from resin material.

[0060] Figure 4 This is a component unfolded view of the electrical equipment according to an embodiment of the present invention. Figure 5 This is an unfolded view of the power cord holding component and power cord of the electrical equipment according to an embodiment of the present invention.

[0061] exist Figure 4 , Figure 5 In the middle, the main body shell 1 has a rear main body shell 1A and a front main body shell 1B.

[0062] The rear main body shell 1A is the rear side that divides the main body shell 1 into two parts between the front side and the rear side. The front main body shell 1B is the front side that divides the main body shell 1 into two parts between the front side and the rear side.

[0063] The opening 2 has a rear opening 2A and a front opening 2B.

[0064] The rear opening 2A is a roughly elongated quadrilateral notch located on the lower part of one side of the rear main body shell 1A in the left-right direction. The front opening 2B is a roughly elongated quadrilateral notch located on the lower part of one side of the front main body shell 1B in the left-right direction.

[0065] Thus, the box-shaped main body shell 1 is divided into a rear main body shell 1A and a front main body shell 1B, and the opening 2 is divided into a rear opening 2A and a front opening 2B. This makes it easier to insert the gap 12 of the power cord holding member 3 into the opening edges of the rear opening 2A and the front opening 2B.

[0066] Additionally, the power cord holding member 3 includes a rear power cord holding member 3A and a front power cord holding member 3B. The rear power cord holding member 3A and the front power cord holding member 3B are components that divide the power cord holding member 3 into two parts by a vertical plane including the central axis of the cylindrical portion 7.

[0067] The rear power cord retaining component 3A has a rear cylinder portion 7A, a rear fixing portion 8A, a rear retaining plate portion (not shown), and a rear insertion through hole (not shown). The rear fixing portion 8A of the rear power cord retaining component 3A is inserted into the notch of the rear main body shell 1A, i.e., the rear opening portion 2A.

[0068] Similarly, the front power cord retaining member 3B has a front cylindrical portion 7B, a front fixing portion 8B, a front retaining plate portion 9B, and a front insertion through hole 4B. The front fixing portion 8B of the front power cord retaining member 3B is inserted into the notch of the front main body shell 1B, i.e., the front opening portion 2B. As a result, it is easy to insert the groove 6a of the sleeve 6 at the opening edge of the rear insertion through hole (not shown) and the front insertion through hole 4B. In addition, in this embodiment, a structure in which the main body shell 1 and the power cord retaining member 3 are divided along the front and rear is adopted, but the same effect can be obtained by a structure divided along the top and bottom or left and right.

[0069] Figure 6 This is a cross-sectional view of the opening of the electrical device according to an embodiment of the present invention. Figure 6 The center of the power cord 5 is located on the central axis of the plug hole 4. Figure 7 This is a cross-sectional view of the opening of the electrical device according to an embodiment of the present invention. Figure 7 The dashed line represents the central axis of power cord 5, and power cord 5 is in a state of being pulled to one side in the left-right direction. Figure 8 This is a cross-sectional view of the opening of the electrical device according to an embodiment of the present invention. Figure 8 The dashed line represents the central axis of power line 5, and power line 5 is in a state of being pulled to the other side in the left and right directions.

[0070] like Figure 6 , Figure 7 and Figure 8 As shown, the outer dimensions of the sleeve 6 gradually decrease from the retaining plate portion 9 side towards the fixing portion 8 (the opening edge 13 of the main body shell 1). According to Figure 7 When the power cord 5 is pulled to the left or right, the bending of the part of the power cord 5 with the sleeve 6 from the retaining plate part 9 toward the fixing part 8 (the opening edge 13 of the main body shell 1) gradually increases.

[0071] The central axis of the insertion hole 4 extends laterally. When viewed from the direction of the central axis of the insertion hole 4, the distance between the central axis of the insertion hole 4 and one side of the cylindrical part of the power cord holding member 3 in the left-right direction is longer than the distance between the central axis of the insertion hole 4 and the other side of the power cord holding member 3 in the left-right direction.

[0072] In the above structure, when the power cord 5 is pulled to one side in the left or right direction (refer to...) Figure 7 The distance between the part of the power cord 5 or sleeve 6 that abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord retaining member 3 and the retaining plate part 9 is longer than the distance when the power cord 5 is pulled to the left or right (see reference). Figure 8 The distance between the portion of the power cord 5 or sleeve 6 that abuts against the fixing portion 8 (opening edge 13 of the main body shell 1) of the power cord retaining member 3 and the retaining plate portion 9. Therefore, the bending point of the power cord 5 when pulled to one side in the left-right direction differs from the bending point when pulled to the other side in the left-right direction, thus reducing metal fatigue of the copper wires within the power cord 5. Consequently, the durability of the power cord 5 is improved.

[0073] Furthermore, 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 of the power cord holding member 3 in the left-right direction is shorter than the distance between the portion of the power cord 5 or the sleeve 6 that abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3 and the holding plate portion 9 when the power cord 5 is pulled to the other side in the left-right direction. Therefore, when the power cord 5 is pulled in the left-right direction, significant bending of the portion of the power cord 5 with the sleeve 6 can be prevented.

[0074] Furthermore, if the power cord 5 is pulled to one side in the left-right direction, the power cord 5 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3. If the power cord 5 is pulled to the other side in the left-right direction, the sleeve 6 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3. That is, when the power cord 5 is pulled to one side in the left-right direction, the portion of the power cord 5 that abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3 bends to the maximum. On the other hand, when the power cord 5 is pulled to the other side in the left-right direction, the front end portion of the sleeve 6 bends to the maximum when the sleeve 6 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3. Therefore, the most bent part of the power cord 5 when pulled to one side in the left-right direction is different from the most bent part of the power cord 5 when pulled to the other side in the left-right direction. This reduces the metal fatigue of the copper wires inside the power cord 5 and improves the durability of the power cord 5.

[0075] (Implementation Method 2)

[0076] Figure 9 This is a schematic perspective view of the power cord holding component and power cord of the electrical device according to Embodiment 2 of the present invention. Figure 10 This is a cross-sectional view of the opening of the electrical device according to Embodiment 2 of the present invention. It shows the 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. Figure 11 This is a cross-sectional view of the opening of the electrical device according to Embodiment 2 of the present invention. The dashed line represents the central axis of the power line, which is the state in which the power line 5 is being pulled to one side in the upward and downward direction when viewed from the side. Figure 12 This is a cross-sectional view of the opening of the electrical device according to Embodiment 2 of the present invention. The dashed line represents the central axis of the power cord, indicating that the power cord 5 is being pulled upwards and downwards when viewed from the side. The same reference numerals are used for the same components as in Embodiment 1, and detailed descriptions of these components are omitted.

[0077] like Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the difference from Embodiment 1 lies in the vertical position of the retaining plate portion 9, which is a generally quadrilateral hole 24. In other words, it is the vertical distance between the power cord 5 and the fixing portion 8 (opening edge 13 of the main body shell 1) of the power cord retaining member 3.

[0078] In the above structure, pull the power cord 5 to one side in the up-down direction (refer to...). Figure 11When the power cord 5 or sleeve 6 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord retaining part 3 and the retaining plate part 9, the distance between them is greater than the distance between the power cord 5 and the retaining plate part 9. Pull the power cord 5 to the other side in the up-down direction (refer to...). Figure 12 When the power cord 5 or sleeve 6 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3 and the holding plate part 9, the distance between them is long. As a result, when the power cord 5 is pulled to one side in the up-down direction, the bending part of the power cord 5 is different from when the power cord 5 is pulled to the other side in the up-down direction. This reduces the metal fatigue of the copper wires inside the power cord 5 and improves the durability of the power cord 5.

[0079] Furthermore, the distances between the power cord 5 and the retaining plate 9 differ depending on the direction of bending: when the power cord 5 is pulled up or down, the distance between the power cord 5 or sleeve 6 and the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord retaining member 3, the distance between the power cord 5 or sleeve 6 and the retaining plate 9, the distance between the power cord 5 or sleeve 6 and the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord retaining member 3, the distance between the power cord 5 or sleeve 6 and the retaining plate 9, and the distance between the power cord 5 or sleeve 6 and the retaining plate 9, and the distance between the power cord 5 or sleeve 6 and the retaining plate 9, respectively. This results in different bending points in the four directions, reducing the metal fatigue of the copper wires inside the power cord 5 and improving its durability.

[0080] Furthermore, 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 of the power cord holding member 3 in the vertical direction is shorter than the distance between the portion of the power cord 5 or the sleeve 6 that abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3 and the holding plate portion 9 when the power cord 5 is pulled to the other side in the vertical direction. As a result, when the power cord 5 is pulled in the vertical direction, it is possible to prevent significant bending of the portion of the power cord 5 with the sleeve 6.

[0081] Furthermore, if the power cord 5 is pulled to one side in the up-down direction, the power cord 5 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3. If the power cord 5 is pulled to the other side in the up-down direction, the sleeve 6 abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3. That is, when the power cord 5 is pulled to one side in the up-down direction and abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3, the portion of the power cord 5 that abuts against the fixing part 8 (opening edge 13 of the main body shell 1) bends the most. On the other hand, when the power cord 5 is pulled to the other side in the up-down direction and abuts against the fixing part 8 (opening edge 13 of the main body shell 1) of the power cord holding member 3, the front end portion of the sleeve 6 bends the most. Therefore, the most bent part of the power cord 5 when pulled to one side in the up-down direction is different from the most bent part when pulled to the other side in the up-down direction. This reduces the metal fatigue of the copper wires inside the power cord 5 and improves the durability of the power cord 5.

[0082] Industrial availability

[0083] The power cord configuration structure of the present invention is very useful in electrical equipment and the like as a power cord lead hole structure that can improve the durability of the power cord.

Claims

1. A power cord configuration structure, which is a power cord configuration structure for electrical equipment, characterized in that, include: A power cord retaining component, which includes a through hole and is provided in the opening of the main body housing; and A power cord, which can be led outward through the plug hole of the power cord retaining component, and has a plug at one end. The power cord has a sleeve that is held in the through hole of the power cord holding member. The power line holding component has: A cylindrical portion extending from the opening edge of the opening of the main body shell toward the inside of the main body shell; and The retaining plate portion is configured to close the inner side of the main body shell in the direction of the central axis of the cylindrical portion, and has the through hole. The central axis of the insertion hole extends laterally. When viewed from the central axis of the insertion hole, the distance between the central axis of the insertion hole and one side of the cylindrical portion of the power cord holding member in the left-right direction is longer than the distance between the central axis of the insertion hole and the other side of the power cord holding member in the left-right direction. When the power cord is pulled in the left-right direction, the portion of the power cord with the sleeve gradually bends as it moves from the retaining plate portion toward the opening edge side of the main body shell. When the power cord is pulled to one side in the left or right direction, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord retaining component and the retaining plate portion... When the power cord is pulled to the left or right, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord retaining component and the retaining plate portion is longer.

2. The power cord configuration structure as described in claim 1, characterized in that: When viewed from the central axis of the through hole, the distance between the central axis of the through hole and one side of the power cord holding component in the left-right direction is... When the power cord is pulled to the left or right, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell of the power cord retaining component and the retaining plate portion is shorter.

3. The power cord configuration structure as described in claim 1 or 2, characterized in that: When the power cord is pulled to one side in the left or right direction, the power cord abuts against the opening edge of the main body shell in the power cord retaining component. When the power cord is pulled to the left or right, the sleeve abuts against the opening edge of the main body shell in the power cord retaining component.

4. The power cord configuration structure as described in claim 1, characterized in that: When the power cord is pulled to one side in the up-down direction, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord retaining component and the retaining plate portion... The distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell in the power cord retaining component and the retaining plate portion is longer than when the power cord is pulled to the other side in the up-down direction.

5. The power cord configuration structure as described in claim 4, characterized in that: When viewed from the central axis of the through hole, the distance between the central axis of the through hole and the lower side of the power cord holding component in the vertical direction is... When the power cord is pulled upwards in the vertical direction, the distance between the portion of the power cord or the sleeve that abuts against the opening edge of the main body shell and the retaining plate portion is shorter.

6. The power cord configuration structure as described in claim 4 or 5, characterized in that: When the power cord is pulled upwards in the vertical direction, the power cord abuts against the opening edge of the main body shell in the power cord retaining component. When the power cord is pulled downwards in the up-down direction, the sleeve abuts against the opening edge of the main body shell in the power cord retaining component.

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