Locking structure for door of storage box

Abstract

To provide a locking structure for doors of a storage box, capable of further firmly fixing a pair of doors in a closed state.SOLUTION: A storage box 100 includes a housing 10 and a pair of doors 50 in a double-door style attached to the housing 10. A left door 51 of the doors 50 has an opening / closing operation part 62 and a locking bar 60 whose tip position can be moved by operating the opening / closing operation part 62. A right door 52 of the doors 50 has a right-door-side guide part 83 through which the locking bar 60 can pass. The housing 10 has a fixed part 20 through which the locking bar 60 can pass, and when the left door 51 and the right door 52 are in a closed state, operating the opening / closing operation part 62 moves the tip position of the locking bar 60 so that the locking bar 60 passes through the right-door-side guide part 83 and the fixed part 20.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present disclosure relates to a locking structure for a storage box door. [Background technology]

[0002] Conventionally, technologies relating to locking structures for doors of storage boxes for storing storage batteries, distribution boards, etc. have been developed. For example, Patent Document 1 discloses a door lock structure for a cabinet with a pair of double-door doors, in which one door is provided with a flat handle and the other door is provided with a locking bar that engages with the upper and lower ends of the opening of the main body to lock the door, a rotating plate provided in the center of the locking bar extends and retracts the locking bar, and a locking piece provided on the back of the flat handle that engages with a flap. In this door lock structure, when the locking bar is engaged with the main body and the other door is in a locked state, if one door is closed and the flat handle is locked, the flap engages with the locking piece, and the one door is also locked. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-200169 Summary of the Invention [Problem to be solved by the invention]

[0004] In the door lock structure disclosed in Patent Document 1, one door with a flat handle is fixed to the other door only by a rotating plate provided near the center of the door. Therefore, a structure that can more firmly securely fix the pair of doors in the closed state is required. [Means for solving the problem]

[0005] A locking structure for a storage box door according to one aspect of the present disclosure includes: A door locking structure for a storage box including a housing and a pair of doors, a first door and a second door, attached to the housing and opening like a double door, comprising: The first door has an opening / closing operation unit and a locking rod whose tip position can be moved by operating the opening / closing operation unit, The second door has a second door side guide portion through which the locking rod can pass, The housing has a fixing portion through which the locking rod can pass, In a closed state in which the first door and the second door are closed, the tip position moves when the opening / closing operation part is operated, and the locking rod passes through the second door side guide part and the fixing part. [Effects of the Invention]

[0006] According to the present disclosure, the pair of doors can be more securely closed. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing the configuration of a storage box having a locking structure according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a diagram showing a detailed configuration of the housing shown in FIG. [Figure 3] FIG. 3 is a diagram showing the configuration of the rear surface of the left door shown in FIG. [Figure 4] FIG. 4 is a partial enlarged view showing the detailed configuration of the left door shown in FIG. [Figure 5] FIG. 5 is a partial enlarged view (part 1) for explaining the configuration for rotating the rotating plate shown in FIG. [Figure 6] FIG. 6 is a partially enlarged view (part 2) for explaining the configuration for rotating the rotating plate shown in FIG. [Figure 7] FIG. 7 is a diagram for explaining the movement of the first locking bar and the second locking bar when changing from the unlocked state to the locked state. [Figure 8] 8 is a perspective view showing the configuration of the front surface of the right door shown in FIG. [Figure 9]FIG. 9 is a partial enlarged view showing the detailed configuration of the right door shown in FIG. [Figure 10] FIG. 10 is a partial enlarged view showing the positional relationship between the right door upper guide portion and the upper fixing portion in the closed state. [Figure 11] FIG. 11 is a diagram for explaining the position of the first locking bar in the locked state. [Figure 12] FIG. 12 is a diagram for explaining the position of the second locking bar in the locked state. DETAILED DESCRIPTION OF THE INVENTION

[0008] Specific examples of the locking structure for the storage box door of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0009] In the following description, the terms "front," "rear," "left," "right," "upper," and "lower" may be used, but these directions are relative directions set for the convenience of explanation. In each figure, "F" is "front," "B" is "rear," "L" is "left," "R" is "right," "U" is "upper," and "D" is "lower."

[0010] [Overall configuration] Fig. 1 is a perspective view showing the configuration of a storage box 100 having a locking structure according to an embodiment of the present disclosure. As shown in Fig. 1, the storage box 100 includes a housing 10 that houses electrical equipment such as a distribution board, and a pair of doors 50 that open like a double door attached to the front side of the housing 10. The housing 10 has a bottom plate 11 located on the lower side, a top plate 12 located on the upper side, a left side panel 13 located on the left side, a right side panel 14 located on the right side, and a back panel 15 located on the rear side. The doors 50 include a left door (first door) 51 connected to the left side panel 13 and a right door (second door) 52 connected to the right side panel 14.

[0011] Fig. 2 is a diagram showing a detailed configuration of the housing 10 shown in Fig. 1. The door 50 shown in Fig. 1 is omitted from Fig. 2. As shown in Fig. 2, the housing 10 has fixing parts 20 provided on each of the bottom plate 11 and the top plate 12. The fixing part 20 provided on the top plate 12 is referred to as the "upper fixing part 21," and the fixing part 20 provided on the bottom plate 11 is referred to as the "lower fixing part 22."

[0012] The upper fixing part 21 is provided near the center in the left-right direction on the front surface of the top plate 12. The upper fixing part 21 also protrudes forward as shown in the enlarged view at the upper right of Fig. 2. The lower fixing part 22 is provided near the center in the left-right direction on the front surface of the bottom plate 11. The lower fixing part 22 also protrudes forward as shown in the enlarged view at the lower right of Fig. 2. Openings 21a and 22a are formed in the upper fixing part 21 and the lower fixing part 22, respectively, and a locking rod, described later, can be passed through these openings 21a and 22a.

[0013] [Left door configuration] Fig. 3 is a diagram showing the configuration of the back surface of the left door 51 shown in Fig. 1. As shown in Fig. 3, the left door 51 has a main body 61, an opening / closing operation part 62 attached near the center in the vertical direction of the main body 61, and a locking bar 60. The locking bar 60 includes a first locking bar 63 and a second locking bar 64.

[0014] Figure 4 is a partially enlarged view showing the detailed configuration of the left door 51 shown in Figure 3. As shown in Figure 4, left door-side guide portions (first door-side guide portions) 70 are provided at both the top and bottom of the main body portion 61. The left door-side guide portion 70 provided at the top of the main body portion 61 is referred to as the "left door-side upper guide portion 71," and the left door-side guide portion 70 provided at the bottom of the main body portion 61 is referred to as the "left door-side lower guide portion 72."

[0015] The left door upper guide portion 71 and the left door lower guide portion 72 protrude rearward from the left door 51 in a closed state (the state shown in FIG. 1) in which the left door 51 is attached to the housing 10 and closed. In addition, an opening is formed in each of the left door upper guide portion 71 and the left door lower guide portion 72.

[0016] The opening / closing operation unit 62 has a substantially L-shaped rotating plate 65. The rotating plate 65 is connected to a handle unit (described later) via a shaft S, and rotates around the shaft S when the handle unit is operated.

[0017] The first locking rod 63 has a lower end 63b rotatably connected to the rotating plate 65 and extends upward. More specifically, the rotating plate 65 has a main body 30, a first extension 31 that protrudes to the right of the shaft S in the state shown in Figure 4, and a second extension 32 that protrudes to the left of the shaft S. The lower end 63b of the first locking rod 63 is rotatably connected to the first extension 31. In addition, the upper end 63a of the first locking rod 63 has a tapered shape and passes through an opening in the left-door-side upper guide part 71.

[0018] The second locking rod 64 extends downward with its upper end 64b rotatably connected to the rotating plate 65. More specifically, the upper end 64b of the second locking rod 64 is rotatably connected to the second extending portion 32. The lower end 64a of the second locking rod 64 has a tapered shape and passes through the opening of the left-door side lower guide portion 72.

[0019] 5 and 6 are partial enlarged views for explaining the configuration for rotating the rotating plate 65 shown in Fig. 4. In Fig. 6, the main body 61 of the left door 51 is omitted to make it easier to understand the movement of the rotating plate 65. As shown in Fig. 5, the opening / closing operation unit 62 has, in addition to the rotating plate 65, a handle portion 67 and a handle frame portion 68 attached to the main body portion 61. The handle frame portion 68 is formed with an accommodation groove 69 in which the handle portion 67 is accommodated.

[0020] An opening 66 is formed near the center in the vertical direction in the side plate 61A at the right end of the main body 61. As shown in Fig. 5, when the rotating plate 65 is rotated so that the end 30a of the rotating plate 65 opposite the shaft S of the main body 30 is positioned on the right side, the end 30a is exposed to the outside of the left door 51 through the opening 66.

[0021] 6, the upper part of handle portion 67 and rotating plate 65 are connected via shaft portion S shown in FIG. 4. When the user presses the upper part of handle portion 67 rearward (in the direction indicated by arrow X), the lower part of handle portion 67 moves forward so as to move away from housing groove 69. In this state, handle portion 67 can be rotated around the upper part of handle portion 67, i.e., shaft portion S.

[0022] Specifically, when the user rotates the handle portion 67 counterclockwise as indicated by arrow A1, the rotating plate 65 rotates counterclockwise around the shaft portion S as indicated by arrow B1. Then, as shown in Figure 4, the end portion 30a of the rotating plate 65 moves downward. This state shown in Figure 4 is referred to as the "unlocked state."

[0023] On the other hand, in the unlocked state, when the user rotates the handle portion 67 clockwise as shown by the arrow A2 in Fig. 6, the rotating plate 65 rotates clockwise as shown by the arrow B2. Then, the end portion 30a of the rotating plate 65 moves to the right and is exposed from the opening 66 of the left door 51 as shown in Fig. 5. This state is called the "locked state."

[0024] Figure 7 is a diagram for explaining the movement of the first locking bar 63 and the second locking bar 64 when changing from the unlocked state to the locked state. Assume that the rotating plate 65 is rotated by operating the handle portion 67, changing from the unlocked state shown in Figure 4 to the locked state shown in Figure 7. In this case, the position of the tip of the locking bar 60 moves.

[0025] More specifically, referring again to Figure 6, each of the first extension portion 31 and the second extension portion 32 of the rotating plate 65 has an approximately L-shaped configuration, bends backward from the main body portion 30, and extends further away from the main body portion 30.

[0026] As the orientation of the rotating plate 65 changes, the lower end 63b of the first locking bar 63, which is the connecting part between the rotating plate 65 and the first locking bar 63, moves upward while rotating around the shaft part S. At this time, as shown in Figure 7, the first locking bar 63 passes through the opening of the left-door side upper guide part 71, so movement of the first locking bar 63 in the left-right direction is restricted, and the lower end 63b of the first locking bar 63 rotates relative to the rotating plate 65 around the connecting part with the first extension part 31.

[0027] Additionally, the upper end 64b of the second locking bar 64, which is the connecting portion between the rotating plate 65 and the second locking bar 64, moves downward while rotating around the shaft portion S. At this time, because the second locking bar 64 passes through the opening in the left-door-side lower guide portion 72, movement of the second locking bar 64 in the left-right direction is restricted, and the upper end 64b of the second locking bar 64 rotates relative to the rotating plate 65 around the connecting portion with the second extension portion 32. Accordingly, the entire first locking bar 63 moves upward, and the entire second locking bar 64 moves downward.

[0028] [Right door configuration] 1. The right door 52 has a main body 81, a plate-shaped extending portion 82 that extends to the left in the closed state, and a right-door-side guide portion (second door-side guide portion) 83 that protrudes forward in the closed state. The extending portion 82 includes a first extending portion 91 provided on the upper portion of the main body 81 and a second extending portion 92 provided on the lower portion of the main body 81.

[0029] The right door side guide portion 83 includes a right door side upper guide portion (second door side upper guide portion) 93 provided at the upper end of the first extending portion 91, and a right door side lower guide portion (second door side lower guide portion) 94 provided at the lower end of the second extending portion 92. Openings 93a, 94a are formed in the right door side upper guide portion 93 and the right door side lower guide portion 94, respectively, and the locking rod 60 shown in FIG. 7 etc. can be passed through these openings 93a, 94a.

[0030] Figure 9 is a partial enlarged view showing the detailed configuration of the right door 52 shown in Figure 8. An engagement hole 86 is formed in the left side plate 81A of the main body 81 near the center in the vertical direction. In the closed state, the engagement hole 86 faces the opening 66 of the left door 51 shown in Figure 5. In addition, the first extension portion 91 and the right-door-side upper guide portion 93 are integrally formed, and the second extension portion 92 and the right-door-side lower guide portion 94 are integrally formed.

[0031] Fig. 10 is a partial enlarged view showing the positional relationship between the right-door-side upper guide portion 93 and the upper fixing portion 21 in the closed state. As shown in Fig. 10, when the right door 52 is closed, the opening 93a of the right-door-side upper guide portion 93 of the right door 52 and the opening 21a of the upper fixing portion 21 of the housing 10 overlap in the vertical direction. Furthermore, when the right door 52 is closed, the opening 94a of the right-door-side lower guide portion 94 of the right door 52 shown in Fig. 9 and the opening 22a of the lower fixing portion 22 of the housing 10 shown in Fig. 2 overlap in the vertical direction.

[0032] Although the extension portion 82 and the right door side guide portion 83 shown in FIG. 9 are integrally formed, they are not limited to this configuration and may be separate bodies.

[0033] [Details of locking structure] When closing the door 50 of the storage box 100 shown in FIG. 1, the user rotates the handle portion 67 (see FIG. 6) to the unlocked state, and then closes the left door 51 and the right door 52 relative to the housing 10.

[0034] Then, as shown by arrow A2 in FIG. 6, the user rotates the handle portion 67 clockwise to accommodate it in the accommodation groove 69 of the handle frame portion 68. As a result, the end portion 30a of the rotating plate 65 rotates clockwise so as to move upward, and passes through the opening 66 of the left door 51 and the engagement hole 86 (see FIG. 9) of the right door 52. As a result, the left door 51 and the right door 52 are fixed near the center in the up-down direction, and a locked state is established. Furthermore, as the handle portion 67 is accommodated in the accommodation groove 69, movement of the handle portion 67 is restricted, and the locked state is maintained.

[0035] Fig. 11 is a diagram for explaining the position of the first locking bar 63 in the locked state. In Fig. 11, the main body 61 of the left door 51 is omitted to make it easier to understand the engagement state between the first locking bar 63, the right door 52, and the housing 10.

[0036] 11, in the closed state, the opening of the left-door-side upper guide part 71 of the left door 51, the opening 93a of the right-door-side upper guide part 93, and the opening 21a of the upper fixing part 21 overlap in the vertical direction. When changing from the unlocked state to the locked state, the upper end 63a of the first locking rod 63 passes through both the opening 93a of the right-door-side upper guide part 93 and the opening 21a of the upper fixing part 21 provided on the housing 10.

[0037] The upper end 63a has a tapered shape, and the inner diameters of the openings 93a, 21a of the right-door side upper guide part 93 and the upper fixed part 21 are larger than the outer diameter of the first locking rod 63. For this reason, the upper end 63a of the first locking rod 63 can easily pass through the openings 93a, 21a of the right-door side upper guide part 93 and the upper fixed part 21.

[0038] Furthermore, since the opening of the left door side upper guide portion 71, the opening 93a of the right door side upper guide portion 93, and the opening 21a of the upper fixing portion 21 overlap in the vertical direction, the first locking rod 63 passing through the left door side upper guide portion 71 is guided by the left door side upper guide portion 71 toward the right door side upper guide portion 93 and the upper fixing portion 21 when moving upward.

[0039] Fig. 12 is a diagram for explaining the position of the second locking bar 64 in the locked state. In Fig. 12, as in Fig. 11, the main body 61 of the left door 51 is omitted to make it easier to understand the engagement state between the second locking bar 64, the right door 52, and the housing 10.

[0040] 12, in the closed state, the left-door-side lower guide portion 72 of the left door 51, the opening 94a of the right-door-side lower guide portion 94, and the opening 22a of the lower fixing portion 22 overlap in the vertical direction. When changing from the unlocked state to the locked state, the lower end 64a of the second locking rod 64 passes through both the opening 94a of the right-door-side lower guide portion 94 and the opening 22a of the lower fixing portion 22 provided on the housing 10.

[0041] The lower end 64a has a tapered shape similar to the upper end 63a of the first locking rod 63, and the inner diameters of the openings 94a, 22a of the right-door-side lower guide part 94 and the lower fixed part 22 are larger than the outer diameter of the second locking rod 64. For this reason, the lower end 64a of the second locking rod 64 can easily pass through the openings 94a, 22a of the right-door-side lower guide part 94 and the lower fixed part 22.

[0042] Furthermore, since the opening of the left door side lower guide portion 72, the opening 94a of the right door side lower guide portion 94, and the opening 22a of the lower fixed portion 22 overlap in the vertical direction, the second locking rod 64 passing through the left door side lower guide portion 72 is guided by the left door side lower guide portion 72 toward the right door side lower guide portion 94 and the lower fixed portion 22 when moving downward.

[0043] In this way, the first locking rod 63 provided on the left door 51 passes through both the right-door-side upper guide portion 93 provided on the right door 52 and the upper fixing portion 21 provided on the housing 10. In addition, the second locking rod 64 provided on the left door 51 passes through both the right-door-side lower guide portion 94 provided on the right door 52 and the lower fixing portion 22 provided on the housing 10. Therefore, the left door 51, the right door 52 and the housing 10 can be firmly fixed together at the top and bottom of the storage box 100.

[0044] Furthermore, in the closed state, as shown in Fig. 11, the left-door-side upper guide portion 71 of the left door 51 abuts against the first extending portion 91 of the right door 52. Also, the left-door-side lower guide portion 72 (see Fig. 7) of the left door 51 abuts against the second extending portion 92 (see Fig. 9) of the right door 52. This allows the position of the right door 52, which does not have the first locking bar 63 and the second locking bar 64, to be fixed by the left door 51.

[0045] As described above, the storage box 100 according to this embodiment includes a housing 10 and a double door 50 attached to the housing 10. The left door 51 of the door 50 has an opening / closing operation unit 62 and a locking bar 60 whose tip position can be moved by operating the opening / closing operation unit 62. The right door 52 of the door 50 has a right-door-side guide unit 83 through which the locking bar 60 can pass. The housing 10 has a fixed part 20 through which the locking bar 60 can pass. When the left door 51 and the right door 52 are closed and in a closed state, operating the opening / closing operation unit 62 moves the tip position of the locking bar 60 so that the locking bar 60 passes through the right-door-side guide unit 83 and the fixed part 20. With this configuration, the pair of doors 50 can be firmly fixed to the housing 10.

[0046] In addition, in the storage box 100 according to this embodiment, the left door 51 has a left door side guide portion 70 through which the locking rod 60 passes. With this configuration, the direction of movement of the tip of the locking bar 60 is adjusted by the left door side guide part 70, and the tip of the locking bar 60 can be guided to the right door side guide part 83 and the fixed part 20.

[0047] In addition, in the storage box 100 according to this embodiment, the right door 52 has an extending portion 82 that extends toward the left door 51 in the closed state. The left door-side guide portion 70 of the left door 51 protrudes toward the rear side of the left door 51 and abuts against the extending portion 82 of the right door 52 in the closed state. With this configuration, the right door 52, which does not have a locking rod 60, can be fixed by the left door 51 in the closed state.

[0048] In addition, in the storage box 100 according to this embodiment, the extension portion 82 of the right door 52 and the right door side guide portion 83 are integrally formed. With this configuration, the number of parts can be reduced, the work of attaching the right door side guide portion 83 to the right door 52 can be simplified, and the strength of the right door side guide portion 83 can be improved.

[0049] Furthermore, in the storage box 100 according to this embodiment, the locking rod 60 includes a first locking rod 63 and a second locking rod 64. The right-door guide portion 83 includes a right-door upper guide portion 93 provided on the top of the right door 52 and a right-door lower guide portion 94 provided on the bottom of the right door 52. The fixing portion 20 includes an upper fixing portion 21 provided on the top of the housing 10 and a lower fixing portion 22 provided on the bottom of the housing 10. When the opening / closing operation portion 62 is operated in the closed state, the tip position of the first locking rod 63 moves upward and passes through the right-door upper guide portion 93 and the upper fixing portion 21. When the opening / closing operation portion 62 is operated in the closed state, the tip position of the second locking rod 64 moves downward and passes through the right-door lower guide portion 94 and the lower fixing portion 22.

[0050] With this configuration, the left door 51 and the right door 52 can be firmly fixed to the housing 10 at the top and bottom of the storage box 100, respectively, thereby preventing the doors 50 from bending due to vibrations during transportation, etc.

[0051] In the above-described embodiment, the sets of left door side guide portion 70 and right door side guide portion 83 are provided at two locations, the top and bottom of storage box 100, but the present invention is not limited to this configuration. For example, the number of sets of left door side guide portion 70 and right door side guide portion 83 may be one or three or more.

[0052] Although the embodiments of the present disclosure have been described above, it goes without saying that the technical scope of the present disclosure should not be interpreted as being limited by the description of the present embodiments. The present embodiments are merely examples, and it will be understood by those skilled in the art that various modifications of the embodiments are possible within the scope of the invention described in the claims. The technical scope of the present disclosure should be determined based on the scope of the invention described in the claims and its equivalents. [Explanation of symbols]

[0053] 10. Cabinet 11 Bottom plate 12 Top plate 13 Left side plate 14 Right side plate 15 Back plate 20 Fixed part 21 Upper fixed part 21a opening 22 Lower fixing part 22a opening 30 Main body of rotating plate 30a End of main body 31 1st extension part 32 Second extension part 50 Doors 51 Left door (first door) 52 Right door (second door) 60 Locking rod 61,81 Main body 61A, 81A side panels 62 Opening and closing operation section 63 1st locking rod 63a Upper end of first locking rod 63b Lower end of first locking rod 64 Second locking rod 64a Lower end of second locking rod 64b Upper end of second locking bar 65 Rotating plate 66 Opening 67 Handle 68 Handle frame 69 Storage groove 70 Left door guide section (first door guide section) 71 Upper guide on left door side 72 Left door bottom guide 82 Extension 83 Right door guide section (second door guide section) 86 Engagement hole 91 1st extension part 92 Second extension part 93 Right door upper guide part (second door upper guide part) 93a aperture 94 Right door side lower guide part (second door side lower guide part) 94a Opening 100 storage boxes

Claims

1. A door locking structure for a storage box including a housing and a pair of doors, a first door and a second door, attached to the housing and configured as double doors, comprising: The first door has an opening / closing operation unit and a locking rod whose tip position can be moved by operating the opening / closing operation unit, The second door has a second door side guide portion through which the locking rod can pass, The housing has a fixing portion through which the locking rod can pass, A locking structure for a storage box door, in which, when the first door and the second door are closed and in a closed state, the tip position moves when the opening / closing operating part is operated, and the locking rod passes through the second door side guide part and the fixed part.

2. 2. The storage box door locking structure according to claim 1, wherein the first door has a first door side guide portion through which the locking bar passes.

3. the second door has an extension portion that extends toward the first door in the closed state, 3. The storage box door locking structure according to claim 2, wherein the first door-side guide portion protrudes from the rear side of the first door in the closed state and abuts against the extension portion of the second door.

4. 4. The storage box door locking structure according to claim 3, wherein the second door-side guide portion is formed integrally with the extension portion.

5. The locking rod includes a first locking rod and a second locking rod, The second door side guide portion includes a second door side upper guide portion provided on an upper portion of the second door and a second door side lower guide portion provided on a lower portion of the second door, the fixing portion includes an upper fixing portion provided on an upper portion of the housing and a lower fixing portion provided on a lower portion of the housing, When the opening / closing operation unit is operated in the closed state, the tip position of the first locking rod moves upward and penetrates the second door side upper guide unit and the upper fixing unit, 3. The storage box door locking structure of claim 1, wherein when the opening / closing operating portion is operated in the closed state, the tip position of the second locking rod moves downward and penetrates the second door side lower guide portion and the lower fixing portion.

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