Ground-mounted electrical equipment

Abstract

To improve the strength of the base for ground-mounted electrical equipment. [Solution] Ground-mounted electrical equipment having a base, a floor plate on the base, and an outer casing on the floor plate, wherein the base has a reinforcing frame, and the reinforcing frame has grooves corresponding to cables.

Description

Technical Field

[0001] The present invention relates to ground-mounted electrical equipment.

Background Art

[0002] As an example of ground-mounted electrical equipment, Patent Document 1 is known. It has a configuration in which various electrical equipment is installed on a base 15 and an outer box is provided. The base is provided with lead-in ports 151 and 152, and cables are led in from there.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] With the increase in the size of electrical equipment, in the structure of Patent Document 1, there is a risk that the strength of the base becomes insufficient. In addition, in the configuration of Patent Document 1, insufficient consideration was given to the influence of humidity from the ground on the internal electrical equipment.

[0005] Therefore, in the present application, it is an object to provide a technology that improves the strength of the base in ground-mounted electrical equipment and enables it to cope with the increase in size and weight of electrical equipment. Furthermore, additionally, it is an object to provide a technology that reduces the influence of humidity from the ground.

Means for Solving the Problems

[0006] In a ground-mounted electrical equipment having a base, a floor board on the base, and an outer box on the floor board, the base has a reinforcing frame, and the reinforcing frame has a groove corresponding to a cable.

Effects of the Invention

[0007] For ground-mounted electrical equipment, improving the strength of the base makes it possible to accommodate larger and heavier electrical equipment.

[0008] Further features and effects of the present invention will become clear throughout the entire specification below. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram of the external appearance of ground-mounted electrical equipment. [Figure 2] This is a schematic top view of part 102 of Figure 1. [Figure 3] This is a schematic cross-sectional view of the area along line AA in Figure 2. [Figure 4A] This is an example of a basic structure. [Figure 4B] This is an example of a basic structure. [Figure 4C] This is an example of a basic structure. [Figure 4D] This is an example of a basic structure. [Figure 4E] This is an example of a basic structure. [Figure 4F] This is an example of a basic structure. [Figure 4G] This is an example of a basic structure. [Figure 4H] This is an example of a basic structure. [Figure 4I] This is an example of a basic structure. [Figure 5A] This is a schematic top view corresponding to Figure 2. [Figure 5B] Figure 5A is a schematic cross-sectional view of the section along line AA. [Figure 5C] Figure 5A is a schematic cross-sectional view of the area marked by line BB. [Figure 6A] This is a schematic top view corresponding to Figure 5A in another embodiment. [Figure 6B] This is a schematic diagram of 104. [Figure 6C] Figure 6A is a schematic cross-sectional view of the section along line AA. [Figure 6D] Figure 6A is a schematic cross-sectional view of the BB line section. [Figure 7A] It is an explanatory diagram corresponding to FIG. 2 in another embodiment. [Figure 7B] FIG. 7A is a schematic top view shown corresponding to FIG. 6A. [Figure 7C] It is a schematic cross-sectional view of the A-A line portion of FIG. 7B. [Figure 7D] It is a schematic cross-sectional view of the B-B line portion of FIG. 7B. [Figure 7E] It is an explanatory diagram of 104. [Figure 7F] It is an explanatory diagram of 104. [Figure 7G] It is a schematic top view corresponding to FIG. 7B. [Figure 7H] It is a schematic cross-sectional view of the A-A line portion of FIG. 7G. [Figure 7I] It is a schematic cross-sectional view of the B-B line portion of FIG. 7G. [Figure 8A] It is a schematic top view corresponding to the vicinity of 200 in FIG. 7B in another embodiment. [Figure 8B] It is an explanatory diagram of the relationship between 109 and 105. [Figure 8C] It is an explanatory diagram of the relationship between 109 and 105. [Figure 8D] It is a schematic cross-sectional view of the A-A line portion of FIG. 8A. [Figure 9] It is a schematic top view corresponding to the vicinity of 200 in FIG. 7B in another embodiment. [Figure 10] It is an explanatory diagram of the usage of 108. [Figure 11A] It is a schematic top view corresponding to the vicinity of 200 in FIG. 7B in another embodiment. [Figure 11B] It is a schematic cross-sectional view of the A-A line portion of FIG. 11A. [Figure 12A] It is an explanatory diagram of the usage of 108 corresponding to FIG. 11A. [Figure 12B] It is a schematic cross-sectional view of the A-A line portion of FIG. 12A.

Mode for Carrying Out the Invention

Examples

[0010] Figure 1 is a schematic diagram of the external appearance of a ground-mounted electrical device according to one embodiment of the present invention. A floor plate 102 is placed on a base 101, and an outer casing 103 containing the electrical device is placed on top of the floor plate 102. 200 is the opening of the floor plate, and 500 is the opening of the base.

[0011] Figure 2 is a schematic top view of the floorboard 102 shown in Figure 1. At the floorboard opening 200, the cable 105 passes through the top and bottom of the floorboard, allowing the cable to be pulled in.

[0012] Figure 3 is a schematic cross-sectional view of the section indicated by line AA in Figure 2. A floor plate 102 is placed on a base 101, and a cable 105 passes through the opening between them. There is space around the cable 105. Because the opening is large, there was a concern that the strength of the base 101 and floor plate 102 would be insufficient if the weight and size of the electrical equipment increased.

[0013] Figure 4A shows an example in which a reinforcing frame 107 is provided to the base 101 to improve its strength. The frame connects adjacent sides of the base 101, thereby increasing its strength.

[0014] The reinforcing frame 107 may not necessarily have a simple shape. However, in this embodiment, multiple grooves are provided in the reinforcing frame 107 to also function as a cable receiver. Various groove shapes can be applied, but examples include arc-shaped, semi-circular, rectangular, and polygonal shapes. In Figure 4A, multiple semi-circular grooves are provided.

[0015] The reinforcing frame 107 and the base 101 are integrated by welding, for example. This reduces the opening area of ​​the base 101, thereby suppressing distortion of the base.

[0016] Figure 4B shows an example in which an additional bridge 600 is provided between the reinforcing frame 107 and the base 101. This further reduces the opening area and the distortion of the base. The additional bridge 600 may be constructed by welding it to both the reinforcing frame 107 and the base 101. Alternatively, it may be formed integrally with one of the reinforcing frame 107 or the base 101 and welded to the other.

[0017] Figure 4C shows an example where multiple additional bridges 600, as shown in Figure 4B, are installed. Installing multiple bridges further improves the effectiveness.

[0018] Figure 4D shows an example where the additional bridge 600 is installed on the opposite side. The same effect as in Figure 4B can be achieved.

[0019] Figure 4E shows an example where multiple additional bridges 600 are provided on the opposite side.

[0020] Figure 4F shows an example in which additional bridges 600 are provided on both the front and rear sides of the reinforcing frame 107. This allows for more reliable suppression of base distortion.

[0021] Figure 4G is similar to Figure 4F, but shows an example where the vertical position of the additional bridge 600 is shifted between multiple additional bridges.

[0022] Figure 4H shows an example in which the additional bridge 600 is integrated with the reinforcing frame 107.

[0023] Figure 4I shows an example where the strength of the reinforcing frame 107 is improved by providing folds on both the upper and lower sides of the reinforcing frame 107. In Figure 4I, the number of notches on the lower side of the reinforcing frame 107 is reduced compared to the number of grooves for cable receiving on the upper side. This further improves strength and also facilitates cable routing.

[0024] The structures and technical concepts in Figures 4A to 4I can be used individually or in combination.

[0025] As described above, by providing the reinforcing frame 107 to the base 101, improved strength and suppression of distortion are achieved. Furthermore, by providing multiple grooves in the reinforcing frame 107 to also function as cable holders, the position of cables within the electrical equipment is stabilized. In addition, by providing the additional bridge 600, further improvements in strength and suppression of distortion are achieved.

[0026] Figure 5A is a top view corresponding to Figure 2, taken from the floor plate 102, with the reinforcing frame 107 shown in Figure 4A provided as the base 101. Figure 5B is a schematic cross-sectional view of the section marked AA in Figure 5A. It shows how the cable 105 is fitted into the groove of the reinforcing frame 107 and supported. Figure 5C is a schematic cross-sectional view of the section marked BB in Figure 5A. [Examples]

[0027] This embodiment is used in addition to Example 1.

[0028] Figure 6A is a schematic top view corresponding to Figure 5A. In this embodiment, a cable support plate 104 is additionally used. 109 indicates the position of a screw or screw hole for fixing the cable support plate 104 to the floor plate 102.

[0029] Figure 6B is a plan view illustrating the cable support plate 104 shown in Figure 6A on its own. A groove for receiving cables is formed in the cable support plate 104 in the direction opposite to the groove in the reinforcing frame 107.

[0030] Figure 6C is a schematic cross-sectional view of the section marked AA in Figure 6A. Compared to Figure 5B, it is shown that a cable support plate 104 has been added. The groove of the reinforcing frame 107 is located on the right side of the figure, and the groove of the cable support plate 104 is located on the left side of the figure, so that the cable 105 is firmly fixed in place from both sides by both grooves. Figure 6D is a schematic cross-sectional view of the section marked BB in Figure 6A.

[0031] The grooves in the cable support plate 104, like those in the reinforcing frame 107, can have various shapes. Examples include arc-shaped, semi-circular, rectangular, and polygonal shapes. In Figure 6B, multiple semi-circular grooves are provided.

[0032] In this embodiment, by providing a cable support plate 104 having grooves for cable support, in addition to the effects of Embodiment 1, more reliable positioning of the cable is achieved. [Examples]

[0033] This embodiment can be used on its own, or in combination with Embodiment 1, Embodiment 2, or both.

[0034] Figure 7A is a diagram illustrating the technical concept of this embodiment, and is an explanatory diagram showing the case where cable 105 is only on the left side compared to Figure 2. Cable 105 is present in the area marked by line AA in the diagram, and cable 105 is absent in the area marked by line BB in the diagram.

[0035] Figure 7B is a schematic top view of Figure 7A, corresponding to Figure 6A. In Figure 7B, the cable support plate 104 is divided in the left-right direction or along its longitudinal direction, and there are multiple such plates.

[0036] Figure 7C is a cross-sectional view of the section along line AA in Figure 7B, and the cable 105 is positioned in the grooves of both the cable support plate 104 and the reinforcing frame 107, just as in Figure 6C.

[0037] Figure 7D is a cross-sectional view of the section marked BB in Figure 7B. If cable 105 were present, the cross-sectional view would be the same as in Figure 7C, but because cable 105 is absent, the hole is shaped to the size of the cable.

[0038] If the sole purpose is to improve the strength of the base 101, reduce strain, and secure the cable, as described in Examples 1 and 2, then the objective is already achieved as is.

[0039] However, this embodiment further achieves the suppression of moisture intrusion from the ground into the electrical equipment.

[0040] Figure 7E shows an example where the cable support plate 104 is divided into a left side 104A and a right side 104B. For example, 104A and 104B each have multiple screw holes or fixing holes 109.

[0041] Figure 7F shows an example where 104B in Figure 7E is inverted vertically within the figure. The center of the inversion is the screw hole or fixing hole 109. Due to the inversion, as shown in Figure 7F, the position of the cable support groove is upward in the figure for 104A and downward in the figure for 104B. Also, the position of the groove of 104 is different depending on whether it is in the vertical direction within the figure.

[0042] Figure 7G is a diagram corresponding to Figure 7B when the cable support plate 104 is arranged in a reversed position as shown in Figure 7F.

[0043] Figure 7H is a schematic cross-sectional view of the BB line section in Figure 7G. Although there is no cable, the cable support plate 104B and reinforcing frame 107 overlap to cover the hole in a planar manner. As a result, even when there is no cable, the opening is not visible in a planar view, thus suppressing the inflow of humidity.

[0044] Figure 7I is a modified version of Figure 7H, in which the length of 104B on the side facing the groove is enlarged. In the case of Figure 7I, even without a cable, the opening is completely sealed by 104B, further suppressing the inflow of moisture. [Examples]

[0045] This embodiment can be used alone, or in combination with either Example 1 or Example 3, or with multiple other embodiments.

[0046] Figure 8A is a schematic top view corresponding to the vicinity of 200 in Figure 7B. It has elastic cable support components 108. In Figure 8A, four elastic cable support components 108 are arranged. It is essential that the elastic cable support components 108 are elastic. For this reason, metal materials and hard resin or plastic materials are unsuitable. Conversely, elastic materials such as foamed resin or rubber are suitable, and in particular, rubber materials that can simultaneously achieve elasticity, strength, and moisture resistance are preferred.

[0047] The elastic cable support component 108 is provided with a groove for securing the position of the cable. Similar to the groove in the reinforcing frame 107, the groove of the elastic cable support component 108 can have various shapes. Examples include arc-shaped, semi-circular, rectangular, and polygonal shapes. Figure 8A shows an example of a semi-circular groove.

[0048] Figures 8B and 8C are explanatory diagrams for assembling the elastic cable support component 108. As shown in Figure 8B, 108A is fitted onto the cable 105 side from above, and 108B is fitted onto the cable 105 side from below. Then, by fixing it with screw holes or fixing holes 109, the area around the cable 105 can be sealed without gaps with the elastic member, as shown in Figure 8C. Figure 8D is a schematic cross-sectional view of the section along line AA in Figure 8A.

[0049] In this embodiment, it is possible to suppress the intrusion of humidity from the minute space around the cable, thereby improving the reliability of ground-mounted electrical equipment. [Examples]

[0050] This embodiment further describes Embodiment 4.

[0051] Figure 9 corresponds to Figure 8A and shows the case where cables are present in all grooves. All cables 105 are sealed around elastic cable support components 108 to prevent moisture intrusion.

[0052] Figure 10, similar to Figure 7A, shows the elastic cable support component 108 inverted vertically on both 108A and 108B, when cable 105 is present on the left side and not on the right side. The ends of the elastic cable support component 108 abut against each other, sealing the hole and creating a confined space, thereby preventing moisture from entering. [Examples]

[0053] This embodiment is a modification of Example 5.

[0054] Figure 11A is a diagram corresponding to Figure 9. It is the same in that it has elastic cable support components 108. The difference is that one elastic cable support component 108A has an overlapping portion 501A, and the other elastic cable support component 108B has an overlapping portion 501B.

[0055] Figure 11B is a schematic cross-sectional view of the section indicated by line AA in Figure 11A. One elastic cable support component 108A has an overlapping portion 501A, and the other elastic cable support component 108B has an overlapping portion 501B. In this case, 501A is provided on the lower side of 108A in the figure, and 501B is provided on the upper side of 108B in the figure, extending from 108A and 108B, respectively.

[0056] Figure 12A is a diagram corresponding to Figure 10. It is the same in that it has an elastic cable support component 108. The difference is that the overlapping portion 501 of the elastic cable support component 108 is located in the center.

[0057] Figure 12B is a schematic cross-sectional view of the section along line AA in Figure 12A. The protruding portion 501A from 108A and the protruding portion 501B from 108B overlap, blocking the path for moisture to enter. Furthermore, the length of the intrusion extension can be increased, further suppressing the intrusion of moisture. In this case, the elasticity of the material further suppresses the intrusion of moisture.

[0058] The various technical concepts described in this application have been explained using the embodiments described above. These can be used individually or in combination. Furthermore, modifications and combinations thereof are also within the scope of the disclosures of this application, as long as the technical concepts disclosed herein are applied.

[0059] Furthermore, one example of the technical concept of the present invention can also be expressed as follows.

[0060] <Part 1> Ground-mounted electrical equipment having a base, a floor plate on the base, and an outer casing on the floor plate, wherein the base has a reinforcing frame, and the reinforcing frame has grooves corresponding to cables. <Part 2> The groove is one of the following shapes: arc-shaped, semi-circular, rectangular, or polygonal. (The ground-mounted electrical equipment described in <Part 1>) <Part 3> The ground-mounted electrical equipment according to <Part 2>, further comprising an additional bridge connecting the reinforcing frame and the base. <Part 4> The reinforcing frame has bent portions on both its upper and lower sides, and the number of grooves provided in the bent portion of the upper side is greater than the number of grooves provided in the bent portion of the lower side, as described in <Part 2>, for ground-mounted electrical equipment. <Part 5> The ground-mounted electrical equipment described in <Part 3>, wherein the number of additional bridges differs before and after the reinforcing frame. <Part 6> The ground-mounted electrical equipment described in <Part 3>, having a plurality of the aforementioned additional bridges located at different positions in the height direction. <Part 7> The ground-mounted electrical equipment according to <Part 2>, further comprising a cable support plate having a groove at a position opposite to the groove of the reinforcing frame. <Part 8> The ground-mounted electrical equipment described in <7>, which has multiple cable support plates. <Part 9> The cable support plate has holes for fixing with screws or bolts, and the length on the side furthest from the groove is longer than the length from the holes in the direction of the groove. (The above-mentioned ground-mounted electrical equipment as described in <Part 8>) <Part 10> The above-mentioned ground-mounted electrical equipment according to <8>, further comprising an elastic cable support component having a groove at a position opposite to the groove of the reinforcing frame. <Part 11> The above-mentioned elastic cable support component is made of rubber, as described in <10>, for ground-mounted electrical equipment. <Part 12> The above-mentioned elastic cable support component has two opposing parts, both of which have extensions from the ends, and the height position of the extensions is such that one is on the upper side and the other is on the lower side, as described in <No. 11> of the ground-mounted electrical equipment. <Part 13> The aforementioned elastic cable support component, when reversed and superimposed, has its extended portions superimposed on the ground-mounted electrical equipment described in <Part 12>. [Explanation of symbols]

[0061] 101: Bass 102: Floorboards 103: Outer box 104: Cable support board 105: Cable 107: Reinforcement frame 108: Elastic cable support component 109: Screw, bolt, or screw hole or fixing hole 200: Floor plate opening 500: Base opening 501: Overlap 600: Additional Bridge

Claims

1. Ground-mounted electrical equipment having a base, a floor plate on the base, and an outer casing on the floor plate, wherein the base has a reinforcing frame, and the reinforcing frame has grooves corresponding to cables.

2. The ground-mounted electrical equipment according to claim 1, wherein the groove is any of the following shapes: arc-shaped, semi-circular, rectangular, or polygonal.

3. The ground-mounted electrical equipment according to claim 2, further comprising an additional bridge connecting the reinforcing frame and the base.

4. The reinforcing frame has bent portions on both its upper and lower sides, and the number of grooves provided in the bent portion of the upper side is greater than the number of grooves provided in the bent portion of the lower side, according to claim 2.

5. The ground-mounted electrical equipment according to claim 3, wherein the number of additional bridges differs before and after the reinforcing frame.

6. The ground-mounted electrical equipment according to claim 3, having a plurality of additional bridges positioned at different heights.

7. The ground-mounted electrical equipment according to claim 2, further comprising a cable support plate having a groove at a position opposite to the groove of the reinforcing frame.

8. The ground-mounted electrical equipment according to claim 7, comprising a plurality of cable support plates.

9. The ground-mounted electrical equipment according to claim 8, wherein the cable support plate has holes for fixing with screws or bolts, and the length on the side furthest from the groove is longer than the length from the holes in the direction of the groove.

10. The ground-mounted electrical equipment according to claim 8, further comprising an elastic cable support component having a groove at a position opposite to the groove of the reinforcing frame.

11. The ground-mounted electrical equipment according to claim 10, wherein the material of the elastic cable support component is made of rubber.

12. The above-mentioned elastic cable support component has two opposing parts, both of which have extensions from their ends, and the height position of the extensions is such that one is on the upper side and the other is on the lower side, according to claim 11, for the ground-mounted electrical equipment.

13. The above-mentioned elastic cable support component is configured such that when reversed and superimposed, the extended portions of each component overlap.

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