Switchgear

Abstract

To allow a lid body for opening / closing a narrow opening part to be supported by using a hinge.SOLUTION: A lid plate 20 for opening / closing an opening part 11 of a top plate 10 (base plate) is supported by a hinge 30. The hinge 30 comprises a first hinge body 31 embedded in an inside surface of the opening part 11 of the base plate 10, a second hinge body 32 embedded in an end surface of the lid plate 20, and connection means 33 rotatably connecting the hinge bodies 31 and 32. In the top plate 10, a housing concave part 15 opened in the inside surface of the opening part 11 and a stepped surface 14 (lower surface) is formed. A holder 50 is housed in the housing concave part 15. In the holder 50, a holding concave part 51 opened on the side of the opening part 11 is formed, and the first hinge body 31 is held in the holding concave part 51.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an opening and closing device using a hinge, and more particularly to an improvement in the mounting structure of this hinge. [Background technology]

[0002] Patent Document 1 discloses a storage section provided on a table top for storing small items and the like. Briefly, an opening is formed in the top, and a storage box is located below this opening and fixed to the underside of the top. The opening is opened and closed by a cover plate. A hinge that rotatably supports the cover plate includes a hinge body fixed to the underside of the top, another hinge body fixed to one surface of the cover plate (the underside when closed), and a connecting means that rotatably connects the two hinge bodies.

[0003] Patent Document 2 discloses a hinge. This hinge includes a hinge body to be embedded in a stationary object, a hinge body to be embedded in a rotating object, and a connecting means that rotatably connects the two hinge bodies. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 55-7989 [Patent Document 2] Design Registration No. 1482979 Summary of the Invention [Problem to be solved by the invention]

[0005] Difficulties arise when using the hinge of Patent Document 2 in a table storage unit opening / closing device such as that of Patent Document 1. This is because the opening in the tabletop is small, and when forming a holding recess for embedding the hinge body into the inside surface of the opening, it is not possible to place a tool for excavating the opening. Also, even if it is possible to place a tool for excavating the opening, it is not possible to form the holding recess efficiently. [Means for solving the problem]

[0006] The present invention has been made to solve the above-mentioned problems, and provides an opening and closing device comprising: a substrate having a first surface and a second surface and an opening extending from the first surface to the second surface; a cover plate that opens and closes the opening in the substrate; and a hinge that rotatably connects the cover plate to the substrate, wherein the hinge has a first hinge body embedded in the inner surface of the opening in the substrate, a second hinge body attached to the cover plate, and connecting means that rotatably connects the first and second hinge bodies to the first hinge body, wherein the substrate is formed with a storage recess that opens to at least one of the first surface and the second surface and to the inner surface of the opening, a holder is stored in the storage recess, and the holder is formed with a holding recess that is open on the opening side, and the first hinge body is held within this holding recess.

[0007] According to the above-described configuration, by forming a holding recess in the substrate and holding the first hinge body of the hinge via a holder housed in this holding recess, the lid can be supported using the hinge even when the opening of the substrate is narrow and it is difficult to form a holding recess on the inner surface of the opening. Also, even when the opening of the substrate is such that a holding recess can be formed on the inner surface of the opening, the first hinge body of the hinge can be attached more efficiently than when the holding recess is formed directly on the inner surface of the opening.

[0008] Preferably, the storage recess does not open to the first surface of the substrate but opens to the second surface and the inner surface of the opening, and further, a concealing member covering the storage recess and the holder is fixed to the second surface of the substrate. According to this configuration, the storage recess and the holder can be hidden.

[0009] In one embodiment, the opening of the substrate has a first opening portion on the first surface side and a second opening portion on the second surface side, the second opening portion being wider than the first opening portion, a step surface being formed between the two and serving as part of the second surface, the storage recess opening onto the inner surface of the first opening portion and also opening onto the step surface, and the concealing member being fixed to the step surface. According to this configuration, even if the substrate is relatively thick, a storage recess for storing the holder can be formed in the substrate.

[0010] In the above aspect, preferably, the first opening portion and the second opening portion are rectangular, the step surface is formed rectangular around the entire periphery of the first and second opening portions, and the concealing member is made of a rectangular concealing frame.

[0011] Preferably, the substrate is a top plate, the top surface of which serves as the first surface, and the bottom surface of which serves as the second surface. This configuration provides a good appearance when viewed from above.

[0012] The storage recess has a rectangular parallelepiped shape, the first hinge body has a main body portion and a pair of fixing flange portions extending from both sides of the main body portion; The outer shape of the holder is a rectangular parallelepiped corresponding to the storage recess, and the holding recess of the holder has a deep portion that accommodates the main body portion of the first hinge body and a pair of shallow portions that accommodate the fixed flange portion. According to this configuration, the shape of the receiving recess is simple, so that the receiving recess can be formed more efficiently. [Effects of the Invention]

[0013] According to the present invention, even if the opening in the base plate is narrow, the cover plate that opens and closes this opening can be rotatably supported using a hinge. Furthermore, even if the opening is not narrow, the hinge installation work can be performed efficiently. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of a table storage unit opening and closing device according to an embodiment of the present invention, as viewed from above; [Figure 2A] 1 is a perspective view of a hinge and a holder used in the opening and closing device, seen from above, showing a state in which the hinge is in an open position. FIG. [Figure 2B] FIG. 2B is a view equivalent to FIG. 2A, showing the hinge in a closed position. [Figure 3] FIG. 2 is an enlarged cross-sectional view of a main part of the hinge mounting structure. [Figure 4A] FIG. 2 is a perspective view of a holder used in the mounting structure, as viewed from above. [Figure 4B] FIG. [Figure 4C] FIG. 4C is a cross-sectional view taken along the arrow CC in FIG. 4B. [Figure 5A] FIG. 10 is a perspective view seen from below, showing an initial stage of the assembly process of the storage unit. [Figure 5B] FIG. 10 is a perspective view from below showing the next stage of the assembly process. [Figure 5C] FIG. 10 is a perspective view from below showing the next stage of the assembly process. [Figure 5D] FIG. 10 is a perspective view from below showing the next stage of the assembly process. [Figure 5E] FIG. 10 is a perspective view from below showing the next stage of the assembly process. [Figure 5F] FIG. 10 is a perspective view from below showing the final stage of the assembly process. [Figure 6] FIG. 5E is a perspective view of the stage of FIG. 5D as seen from above. [Figure 7] FIG. 5B is a perspective view of the stage of FIG. 5E as seen from above. [Figure 8] FIG. 10 is a perspective view of a modified example of the holder as viewed from above. [Figure 9] FIG. 10 is an exploded perspective view of a part of an opening and closing device according to a second embodiment of the present invention, as viewed from above. [Figure 10] FIG. 10 is an exploded perspective view of a part of an opening and closing device according to a third embodiment of the present invention, as viewed from above. DETAILED DESCRIPTION OF THE INVENTION

[0015] <Outline of table storage section> A first embodiment of the present invention will be described below with reference to Fig. 1 to Fig. 7. Fig. 1 shows a storage section of a completed table. This storage section includes an opening and closing device 1 and a storage box 2.

[0016] The opening and closing device 1 has, as its basic components, a wooden top plate 10 (base plate) having a rectangular opening 11, two wooden cover plates 20 that open and close the opening 11, and two hinges 30 that rotatably support each cover plate 20 on the top plate 10. The opening 11 penetrates between an upper surface 10a (first surface) and a lower surface 10b (second surface; see Figures 3 and 5A) of the top plate 10.

[0017] The storage box 2 is disposed below the opening 11 and fixed to the top panel 10. Inside the storage box 2, for example, an electrical outlet unit (container; not shown) having a number of plug sockets is installed.

[0018] For convenience of the following description, two horizontal axes that intersect at right angles are defined as the X-axis and the Y-axis, and are shown in FIGS. 1, 5A to 5F, 6, and 7.

[0019] The opening 11 is rectangular and has two sides extending along the X-axis direction and two sides extending along the Y-axis direction. The two cover plates 20 are rotatably supported by hinges 30 on two sides of the opening 11 that face each other in the X-axis direction (two sides extending along the Y-axis direction). The two cover plates 20 are flush with the upper surface 10a of the top plate 10 when closed, and are placed on the upper surface 10a of the top plate 10 when open.

[0020] <Hinge configuration> 2A and 2B, the hinge 30 includes a first hinge body 31, a second hinge body 32, and a connecting means 33 that connects the hinge bodies 31 and 32 so that they can rotate relative to each other. The first hinge body 31 and the second hinge body 32 each include a main body portion 31a, 32a that is elongated in the Y-axis direction, and a pair of fixed flange portions 31b, 32b that are formed at both ends of the main body portions 31a, 32a in the longitudinal direction. The main body portions 31a, 32a each include accommodation spaces 31x, 32x.

[0021] The connecting means 33 includes a first main link 33a, a pair of second main links 33b, a pair of first auxiliary links 33c, and a second auxiliary link 33d. The first main link 33a and the pair of second main links 33b disposed on both sides thereof are rotatably connected to each other at a middle position. One end of the first main link 33a is rotatably connected to the inner wall surface of the accommodation space 31x of the first hinge body 31 via the pair of first auxiliary links 33c, and the other end of the first main link 33a is rotatably connected to the inner wall surface of the accommodation space 32x of the second hinge body 32. One end of the pair of second main links 33b is rotatably connected to the inner wall surface of the accommodation space 32x of the second hinge body 32 via the second auxiliary link 33d, and the other end of the second main link 33b is rotatably connected to the inner wall surface of the accommodation space 31x of the first hinge body 31. 2B, when the hinge 30 is in the closed position (when the cover plate 20 is closed), the connecting means 33 is accommodated within the accommodation spaces 31x and 32x of the hinge bodies 31 and 32. The seven rotation axes of the links 33a to 33d are parallel to one another and extend in the Y-axis direction.

[0022] <Hinge mounting structure> 3, 5D, and 6, a stepped retaining recess 25 having a shape substantially the same as the outer shape of the second hinge body 32 of the hinge 30 is formed in the end face of the cover plate 20 using a drilling tool, and the second hinge body 32 is embedded in this retaining recess 25. The main body 32a of the second hinge body 32 is housed in the deep portion 25a of the retaining recess 25, and the pair of fixing flanges 32b are housed in the pair of shallow portions 25b of the retaining recess 25, and the second hinge body 32 is fixed to the cover plate 20 by screwing a wood screw 71 that passes through the fixing flanges 32b into the inner surfaces of the shallow portions 25b.

[0023] The above-mentioned opening 11 is formed in the top plate 10. As shown in Figures 3 and 5A, this opening 11 is a stepped opening and has a rectangular upper opening portion 12 (first opening portion), a rectangular lower opening portion 13 (second opening portion) that is wider than the upper opening portion 12, and a horizontal step surface 14 formed at the boundary between them. The step surface 14 is formed around the entire periphery of the opening portions 12, 13 and forms a rectangle. The step surface 14 is provided as part of the lower surface 10b of the top plate 10.

[0024] A storage recess 15 having a generally rectangular parallelepiped shape extending in the Y-axis direction is formed at the intersection of the inner surface of the upper opening portion 12 along the Y-axis direction and the step surface 14. This storage recess 15 opens to the step surface 14 and also to the inner surface of the upper opening portion 12. The storage recess 15 does not open to the top surface 10a of the top plate 11. A holder 50 is stored in this storage recess 15, and the first hinge body 31 of the hinge 30 is held by this holder 50.

[0025] The holder 50 is made of a metal casting or a hard resin injection-molded product, and as shown in Figs. 4A to 4C, has an outer shape corresponding to the housing recess 15, i.e., an approximately rectangular parallelepiped outer shape. The holder 50 has a stepped holding recess 51 corresponding to the outer shape of the first hinge body 31. That is, the holding recess 51 has a deep portion 52 and a pair of shallow portions 53 on both sides thereof. A through hole 55 is formed in the inner surface of the deep portion 52 of the holding recess 51 of the holder 50, and screw holes 56 are formed in the inner surfaces of the pair of shallow portions 53. Furthermore, screw holes 57 are also formed in the undersides of both ends of the holder 50.

[0026] The holder 50 is stored and fixed in the storage recess 51 by screwing a wood screw (not shown) passing through the through hole 55 into the inner surface of the storage recess 15 of the top plate 10. As shown in FIG. 3, the holding recess 51 is open on the side of the upper opening 12, and the lower surface of the holder 50 is flush with the step surface 14.

[0027] 2A, 2B, 3, 5D, and 6, the main body 31a of the first hinge body 31 is accommodated in the deep portion 52 of the holding recess 51, and the fixing flange 31b of the first hinge body 31 is accommodated in the shallow portion 53. The first hinge body 31 is fixed to the holder 50 by threading a screw 72 that passes through the fixing flange 31b of the first hinge body 31 into a screw hole 56 of the holder 50.

[0028] As shown in Figures 3, 5C, and 5D, a rectangular wooden hiding frame 60 (hiding member) is arranged around the periphery of the lower opening portion 13 of the opening 11. The upper surface of this hiding frame 60 contacts the stepped surface 14 of the tabletop 10 and the underside of the holder 50, and its lower surface is flush with the underside 10b of the tabletop 10. The hiding frame 60 is fixed to the stepped surface 14 by screwing wood screws (not shown) inserted into its stepped through-holes 61 into the stepped surface 14. Furthermore, the hiding frame 60 is connected to the holder 50 by screwing a screw (not shown) inserted into another stepped through-hole 62 into the screw hole 57 of the holder 50. The hiding frame 60 covers the storage recess 15, the holder 50, and the stepped surface 14.

[0029] The surface portion of rectangular step surface 14 extending along the Y-axis direction is wider than the surface portion extending along the X-axis direction. The width of hidden frame 60 is equal to the width of the surface portion extending along the Y-axis direction around the entire periphery. Therefore, the inner surface of the portion of hidden frame 60 extending along the Y-axis direction is flush with the inner surface of upper opening portion 12. The portion of hidden frame 60 extending along the X-axis direction is wider than the surface portion of step surface 14 extending along the X-axis direction, and therefore protrudes toward opening 11 as shown in FIG. 1. This protruding portion 65 receives cover plate 20 in the closed state.

[0030] <How to assemble the table storage compartment> Next, a method for assembling the table storage unit including the opening and closing device 1 having the above-described configuration will be described. As shown in FIG. 5A, a stepped rectangular opening 11 is formed in the top plate 10. Furthermore, two storage recesses 15 are formed in the top plate 10 on each side of the opening 11 along the Y-axis direction. As described above, these storage recesses 15 open on the inner surface of the upper opening portion 12 of the opening 11 and also open on the stepped surface 14. Even if the opening 11 is narrow, the storage recesses 15 can be efficiently formed with the excavation tool positioned on the underside 10b of the top plate 10. Because the storage recesses 15 have a simple, approximately rectangular parallelepiped shape, the excavation work can be performed even more efficiently.

[0031] Even when the top plate 10 is relatively thick, as in this embodiment, by forming an upper opening 12 and a wider lower opening 13, a storage recess 15 can be formed at the intersection of the step surface 14 between the openings 12, 13 and the inner surface of the upper opening 12.

[0032] 5A and 5B, the holder 50 is stored and fixed in the storage recess 15. Next, as shown in FIGS. 5C and 5D, a rectangular wooden hidden frame 60 is fixed to the step surface 14.

[0033] Next, as shown in Figures 5D, 5E, 6, and 7, the first hinge body 31 of the hinge 30 is housed and fixed in the holding recess 51 of the holder 5, and the second hinge body 32 is housed and fixed in the holding recess 25 of the cover plate 2. Furthermore, as shown in Figure 5E, a cover 39 that hides the fixing flanges 31b and 32b is attached to the hinge bodies 31 and 32. In this manner, the opening and closing device 1 is completed. Finally, as shown in FIG. 5F, the storage box 2 is fixed to the underside of the hidden frame 60.

[0034] <Modified holder> 8 shows a holder 50A made of sheet metal. This holder 50A has substantially the same functions as the above-mentioned holder 50, and the same reference numerals are used for the respective components, and detailed descriptions thereof will be omitted.

[0035] Second Embodiment In the second embodiment shown in Fig. 9, the table top is composed of a table top main body 110 (substrate) and a back plate 120 (plate-shaped concealing member) attached to the entire lower surface 110b (second surface) of the table top main body 110. A rectangular opening (not shown) is formed in the table top main body 110, and a corresponding opening (not shown) is also formed in the back plate 120. The table top main body 110 of this embodiment is thinner than the table top 10 of the first embodiment, so the opening of the table top main body 110 does not need to be a stepped opening, and has the same shape and area from the upper surface 110a (first surface) to the lower surface 110b.

[0036] A rectangular parallelepiped storage recess 115 is formed at the intersection of the lower surface 110b of the top plate main body 110 and the inner surface 111 of the opening. This storage recess 115 opens to the lower surface 110b of the top plate main body 110 and also opens to the inner surface 111 of the opening, but does not open to the upper surface 110a. This storage recess 115 can be formed by an excavation tool arranged on the lower surface 110b side of the top plate main body 110.

[0037] A holder 50 having the same configuration as in the first embodiment is stored in the storage recess 115. The holder 50 is fixed to the tabletop body 110 by screwing a wood screw 71, which passes through a through-hole 55 formed in the inner surface of the deep portion of the holding recess 51 of the holder 50, into the inner surface of the storage recess 115.

[0038] After the formation of the storage recess 115 and the storage and fixation of the holder 50 are completed, the back plate 120 is attached to the lower surface 110b of the top plate main body 110. The back plate 120 covers the entire lower surface 110b and also covers the storage recess 115 and the holder 50. The other configurations are the same as in the first embodiment, and the first hinge main body of the hinge is held in the holding recess 51 of the holder 50.

[0039] Third Embodiment 10, the table top is composed of a table top main body 210 (substrate) and a decorative plate 220 (plate-shaped concealing member) attached to the entire upper surface 210a (second surface) of the table top main body 210. Openings (not shown) similar to those in the second embodiment are formed in the table top main body 210 and the decorative plate 220.

[0040] A rectangular parallelepiped storage recess 215 is formed at the intersection between the upper surface 210a of the top plate main body 210 and the inner side surface 211 of the opening. This storage recess 215 opens to the upper surface 210a of the top plate main body 210 and also opens to the inner side surface 211 of the opening, but does not open to the lower surface 210b. This storage recess 215 can be formed by an excavation tool arranged on the upper surface 210a side of the top plate main body 210.

[0041] A holder 50 having the same configuration as in the first embodiment is stored in the storage recess 215. The holder 50 is fixed to the top plate body 210 by screwing wood screws 75 that pass through the bottom wall of the holder 50 into the bottom surface of the storage recess 215.

[0042] After the formation of the storage recess 215 and the storage and fixing of the holder 50 are completed, the decorative plate 220 is attached to the upper surface 220a of the top plate body 210. The decorative plate 220 covers the upper surface 220a, the storage recess 215, and the holder 50. The other configuration is the same as that of the first embodiment, and the first hinge body of the hinge is held in the holding recess 51 of the holder 50.

[0043] The present invention is not limited to the above-described embodiment, and various aspects can be adopted. The cover plate that opens and closes the opening in the substrate may be a single piece. The substrates may be arranged vertically. The storage recess may open on the inner surface of the opening of the substrate, and may also open on the first and second surfaces of the substrate. In this case, the storage recess can be formed more efficiently. It is preferable that the concealing member be located on the first and second surfaces. The holder may be fixed to the substrate, or, if a concealing member is provided, may be fixed to both the substrate and the concealing member, or to the concealing member alone. The second hinge body may be attached to the rear surface of the lid end in a surface-mounted state. [Industrial Applicability]

[0044] The present invention can be applied to an opening and closing device for a table storage section or the like. [Explanation of symbols]

[0045] 1 Switchgear 10 Top board (circuit board) 10a Top surface (1st surface) 10b Bottom surface (2nd surface) 11 Opening 12 Upper opening part (first opening part) 13 Lower opening part (second opening part) 14 Step surface 15 Storage recess 20 Lid plate 30 Hinge 31 First hinge body 32 Second hinge body 31a,32a Main body 31b,32b Fixed flange 33 Connection means 40 Storage Box 50,50A holder 51 Retaining recess 52 Deep Part 53 Shallow part 60 Hidden frame (hidden part) 110 Top board (board) 110a Top surface (1st surface) 110b Bottom surface (2nd surface) 115 Storage recess 120 Back plate (hidden part) 210 Top board (board) 210a Top surface (second surface) 210b Bottom surface (first surface) 215 Storage recess 220 Decorative panels (hiding parts)

Claims

1. a base plate having a first surface and a second surface and an opening extending from the first surface to the second surface; a cover plate for opening and closing the opening of the base plate; and a hinge for rotatably connecting the cover plate to the base plate, In an opening and closing device, the hinge has a first hinge body embedded in an inner surface of the opening of the base plate, a second hinge body attached to the cover plate, and a connecting means that connects the first and second hinge bodies rotatably to the first hinge body, An opening and closing device characterized in that a storage recess is formed in the base plate, the storage recess opening to at least one of the first surface and the second surface and opening to the inner surface of the opening, a holder is stored in the storage recess, a holding recess is formed in the holder that is open on the opening side, and the first hinge body is held within this holding recess.

2. the receiving recess does not open to the first surface of the substrate but opens to the second surface and an inner surface of the opening, The opening and closing device according to claim 1 , further comprising a concealing member that covers the storage recess and the holder and is fixed to the second surface of the base plate.

3. the opening of the substrate has a first opening portion on the first surface side and a second opening portion on the second surface side, the second opening portion being wider than the first opening portion, and a step surface being provided as a part of the second surface between the first and second opening portions, The opening and closing device according to claim 2, wherein the storage recess opens onto an inner surface of the first opening portion and also opens onto the step surface, and the concealing member is fixed onto the step surface.

4. The opening and closing device according to claim 3, characterized in that the first opening portion and the second opening portion are rectangular, the step surface is formed rectangular around the entire periphery of the first and second opening portions, and the concealing member is a rectangular concealing frame.

5. The opening and closing device according to any one of claims 1 to 4, wherein the substrate is a top plate, an upper surface of the top plate being provided as the first surface, and a lower surface of the top plate being provided as the second surface.

6. The storage recess has a rectangular parallelepiped shape, the first hinge body has a main body portion and a pair of fixing flange portions extending from both sides of the main body portion; An opening and closing device as described in any one of claims 1 to 4, characterized in that the outer shape of the holder is a rectangular parallelepiped corresponding to the storage recess, and the holding recess of the holder has a deep portion that accommodates the main body portion of the first hinge body and a pair of shallow portions that accommodate the fixed flange portion.

Images