JP3412486B2 - Door support structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door support structure for opening and closing a door used for a distribution board or the like.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional door support structure of this type.
There is one shown in (Japanese Patent Application No. 4-297325). In this structure, a bearing 153 facing the side wall 152 is provided on the back surface of the upper end of the door 157, and shaft holes 154 and 155 are formed in the bearing 153 and the side wall 152.
A spring-bearing / bearing 156 is provided on the side opposite to 2. A recess 157 is formed on the inner surface side so that the back surface projects at the upper end of the inner lid 160, and a bearing 158 is provided in the recess 157.
A long hole 181 is formed in the side wall 180 so as to face the hole 158a of the bearing 158.

The shaft member 159 is inserted into the spring bearing 156 and the bearing 153 of the door 157, the shaft holes 154 and 155 of the side wall 152, and the shaft hole 158a and the elongated hole 181 of the bearing 158 of the inner lid 160, respectively. Also the shaft member 1
By inserting the coil spring 183 through 59 and compressing the coil spring 183 between the spring receiving collar 182 and the spring receiving / bearing 156, the door 157 is held openably and closably by the inner lid 160.

[0004]

However, in this door support structure, the coil spring 183 is inserted through the shaft member 159, and the coil spring 183 is compressed and interposed between the spring receiving collar 182 and the spring receiving / bearing 156. Therefore, the shaft member 15
9 and the coil spring 183 are difficult to mount, and the work of supporting the door 157 is troublesome.

Therefore, an object of the present invention is to provide a door support structure which can facilitate the work of mounting the door.

[0006]

According to another aspect of the present invention, there is provided a support structure for a door, comprising a door having a first bearing portion having a first bearing hole in a rotation axis direction, and an opening opened and closed by the door. A box body having a second bearing portion that has a second bearing hole that is aligned with the first bearing hole; and a shaft portion that is inserted into the first bearing hole and the second bearing hole. And a shaft member having the first bearing part formed in a substantially bifurcated shape.
And forming the first bearing hole in each of them
A pair of hooks are formed on each tip, and the shaft member is
Pressed against a part of the box body when closing the door around the part
Has a drop-out preventing portion that is hooked to the hooking portion, and
The shaft portion and the drop-out prevention portion are substantially U-shaped to face each other.
And the shaft portion of the fall prevention portion is the first
From the bearing hole and the second bearing hole in the axial direction.
The protrusion that restricts the contact is provided between the pair of hooks.
It is something.

According to the door support structure of the first aspect, when the shaft portion of the shaft member is inserted into the first bearing hole and the second bearing hole and the door is closed, the fall prevention portion is caught by the catch portion. The shaft member is held by the first bearing portion or the second bearing portion. Therefore, the work of mounting the door can be facilitated. Further, in the shaft member, the shaft portion and the fall prevention portion face each other.
Since it is formed in a substantially U shape and is integrally formed,
It becomes easier to take elasticity, and the fall prevention part hooks on the hook part.
It will be easier. Furthermore, the shaft member integrally formed in a substantially U shape is
It is hard to come off from the bearing and prevents loss of the shaft member.
be able to.

[0008] The support structure of the door according to claim 2, claim 1
In, in the closed state, the door has a side wall facing the opening side of the box body, the shaft portion from the center side of the back surface of the door toward the peripheral side wall, the first bearing hole and the first Two
It is inserted through the bearing hole of the.

According to the door support structure of the second aspect , in addition to the same effect as that of the first aspect , the workability is facilitated because the side wall does not interfere when the shaft portion is inserted into the bearing hole .

According to a third aspect of the present invention, there is provided a door support structure according to the first aspect.
Alternatively, in the second aspect , the shaft portion of the shaft member has a length that does not disengage from the second bearing hole at a position where the protruding portion engages with one hook portion.

According to the door support structure of the third aspect , in addition to the same effect as that of the first or second aspect , the shaft portion does not easily come off from the second bearing hole even when an impact is applied from the outside.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A distribution board to which an embodiment of the present invention is applied will be described with reference to FIGS. That is, the support structure of the door includes the door 1, the box body 2, and the shaft member 3. The door 1 has a first bearing portion 5 in which a first bearing hole 4 is formed in the rotation axis direction. The embodiment is a door of a distribution board, and a pair of first bearing portions 5 are provided above and below a side portion on a rotation side thereof. The first bearing portion 5 is formed in a substantially bifurcated shape, and the first bearing hole 4 is formed in each of the first and second bearing portions 5, and a pair of hook portions 6 on which a fall prevention portion 7 described later is hooked is formed at each tip. As shown in FIG. 2, the first bearing portion 5 is formed into a substantially bifurcated shape by bending both side pieces to one side by bending it in a U-shape, and the first side bearing portion 5 has first and second side pieces, respectively. A bearing hole 4 is formed, a hook portion 6 is formed in a notch shape at the tip opposite to the extension direction, and a guide curved surface portion 6a for guiding the hook portion 6 is formed in the vicinity thereof. The door 1 has a side wall 8 facing the opening side of the box body 2 when the door 1 is closed.

The box body 2 has an opening 9 which is opened and closed by the door 1.
And a second bearing hole 1 which has a first bearing hole 4 and is aligned with the first bearing hole 4.
It has the 2nd bearing part 11 which formed 0. The second bearing portions 11 of the embodiment are attached to the upper and lower end portions of one side of the edge portion of the opening 9 of the box body 2, respectively, and these second bearing portions 11 are, for example, the first bearing portion 5 and the first bearing portion 5. Similarly, it is bent in a substantially U-shape and is formed into a substantially bifurcated shape by extending both side pieces to one side.
Forming 0. In this box 2, 13 is an inner lid,
Reference numeral 14 is a mounting portion of the inner lid 13 to the box body 2, 15 is a main breaker, 16 is a branch breaker, and 17 is a knockout hole through which a power supply line and a load line are inserted.

The shaft member 3 includes a first bearing hole 4 and a second bearing hole 4.
It has a shaft portion 20 which is inserted into the bearing hole 10. The shaft member 3 is a part of the box body 2 when the door 1 is closed around the shaft portion 20, for example, the second bearing portion 11 in this embodiment.
It has a drop-out prevention portion 7 that is pressed by and is caught by the hook portion 6. The shaft member 3 is integrally formed in a substantially U shape in which the shaft portion 20 and the fall prevention portion 21 face each other. Further, in the drop-out preventing portion 7, the shaft portion 20 has the first bearing hole 4 and the second bearing hole.
A pair of hooking portions 6 are provided with protrusions 22 that are bent in a dogleg shape, for example.
It is provided in between. The shaft portion 20 of the shaft member 3 has a length such that the protruding portion 22 is locked to the one hooking portion 6 and does not come off from the second bearing hole 10 as shown in FIG. Further, the shaft portion 20 is inserted in the first bearing hole 4 and the second bearing hole 1 from the center side of the back surface of the door 1 toward the peripheral side wall 8.
It is supposed to be inserted into 0.

Explaining how to mount the shaft member 3,
As shown in FIG. 2, with the door 1 opened with respect to the box body 2, the first bearing hole 4 and the second bearing hole 10 are aligned, and the shaft portion 20 is inserted therethrough. At this time, the fall prevention unit 7 is shown in FIG.
As shown by the phantom line in (a), it is positioned between the first bearing portion 5 and the second bearing portion 11, and then the door 1 is closed, the fall prevention portion 7 is attached to the first bearing portion 5 And the second bearing portion 11 are sandwiched between the guide curved surface portion 6a and further pushed by the second bearing portion 11 as shown in FIG. 4B, the fall prevention portion 7 is elastically deformed. While sliding on the curved guide surface portion 6a, the guide curved surface portion 6a is pushed into the hooking portion 6 of the first bearing portion 5, and the elasticity of the drop-out preventing portion 7 causes the hooking state as shown in FIG. Further, the shaft member 3 may move in the axial direction as the door 1 is opened and closed. However, by setting the dimensional relationship of the shaft member 3 as described above, for example, as shown in FIG. The shaft portion 20 does not come off from the first bearing hole 4 and the second bearing hole 10 and the door 1 does not come off from the box body 2 in the retaining state where it is locked to one of the portions 6.

The closed state of the lid body 8 is held by an ordinary engaging / disengaging hooking means. According to this embodiment, the shaft portion 20 of the shaft member 3 is connected to the first bearing hole 4 and the second bearing hole 4.
When the door 1 is inserted through the bearing hole 10 and the door 1 is closed, the drop-out preventing portion 7 is caught by the hook portion 6, and the shaft member 3 is held by the first bearing portion 5. Therefore, the work of attaching the door 1 can be facilitated.

Further, since the shaft member 3 is integrally formed with the shaft portion 20 and the drop-out preventing portion 7 in a substantially U-shape opposed to each other,
The fall-off prevention portion 7 can easily take elasticity, and the fall-off prevention portion 7 can be easily hooked on the hook portion 6. Box 2 with door 1 closed
Has a side wall 8 facing the opening 9 side, and the shaft portion 20 extends from the center side of the back surface of the door 1 toward the side wall 8 in the periphery thereof.
Further, since the second bearing hole 10 is inserted, the side wall 8 does not interfere when the shaft portion 20 is inserted into the bearing holes 4 and 10, so that workability is facilitated.

The first bearing portion 5 is formed in a substantially bifurcated shape, the first bearing hole 4 is formed in each of the two forked portions, and a pair of hook portions 6 on which the drop-preventing portions 7 are hooked are formed at respective tips.
In the drop-out prevention portion 7, the shaft portion 20 has the first bearing hole 4 and the second bearing hole.
Since the projecting portion 22 for restricting axial removal from the bearing hole 10 is provided between the pair of hook portions 6, the shaft member 3 integrally formed in a substantially U-shape is detached from the bearing portions 5 and 11. It is difficult to prevent the shaft member 3 from being lost.

Since the shaft portion 20 of the shaft member 3 has such a length that it cannot be disengaged from the second bearing hole 10 at the position where the protruding portion 22 is locked to the one hooking portion 6, an impact is applied from the outside. Also, it becomes difficult for the shaft portion 20 to come off from the second bearing hole 10. Although the hook portion 6 is formed on the first bearing portion 5 and the fall prevention portion 7 is pressed by a part of the box body 2 side to be hooked on the hook portion 6, the hook portion 6 is formed on the second bearing portion. It is formed in the part 11, and the fall prevention part 7 is pressed against a part of the door 1 side so that the hook part 6 is formed.
It may be hooked on.

[0020]

According to the door support structure of claim 1,
When the shaft portion of the shaft member is inserted into the first bearing hole and the second bearing hole and the door is closed, the fall prevention portion is caught by the hook portion and the shaft member is held by the first bearing portion or the second bearing portion. To be done. Therefore, the work of mounting the door can be facilitated. Further, the shaft member has a shaft portion and a fall prevention portion facing each other.
Since it is integrally formed with a substantially U shape, it prevents falling off.
The elasticity of the part is easy to take, and the fall prevention part is hooked on the hook part.
It becomes easy to get rid of. Furthermore, a shaft member integrally formed in a substantially U shape
It will not come off easily from each bearing and prevent the shaft member from being lost.
You can

According to the support structure of the door according to claim 2, in addition to the same effects as claim 2, workability because it does not interfere sidewall when inserting the shaft portion into the bearing hole is facilitated.

According to the door support structure of the third aspect, in addition to the same effect as that of the first or second aspect , the shaft portion does not easily come off from the second bearing hole even when an impact is applied from the outside.

[Brief description of drawings]

FIG. 1 is a perspective view of a distribution board according to an embodiment of the present invention in a door open state.

FIG. 2 is a partial perspective view of a rotating portion of the door.

FIG. 3 is a partially enlarged side view of the same.

FIG. 4 is a partial cross-sectional view of a door opened and a door closed.

FIG. 5 is a partially enlarged side view showing a state in which the protruding portion of the shaft member is locked to the hook portion.

FIG. 6 is a partially exploded perspective view of a conventional example.

[Explanation of symbols] 1 door 2 boxes 3 shaft members 4 First bearing hole 5 First bearing 6 Hook 7 Fallout prevention section 8 side walls 9 openings 10 Second bearing hole 11 Second bearing part 20 Shaft 22 Projection

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Wataru Nagano 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (56) Reference JP-A-8-163718 (JP, A) (JP, U) Actually open 57-183009 (JP, U) Actually open 4-4176 (JP, U) Actually open 56-37680 (JP, U) Actually open 3-115785 (JP, U) Actual Publication 28-9713 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02B 1 / 38,1 / 44 E05D 5/10-5 / 12,7 / 10 F16C 11/04

Claims (3)

(57) [Claims] 1. A door having a first bearing portion in which a first bearing hole is formed in a rotation axis direction, and a second bearing having an opening opened and closed by the door and aligned with the first bearing hole. A box body having a second bearing portion with a hole formed therein; and a shaft member having a shaft portion inserted into the first bearing hole and the second bearing hole , wherein the first bearing portion is substantially Bifurcated
Are formed in each of which the first bearing hole is formed.
A pair of hooks are formed at each tip together with the shaft member.
Part of the box when closing the door around the shaft
Has a drop-out prevention part that is pressed by the
And a substantially U-shape in which the shaft portion and the captive prevention portion face each other.
And the shaft portion is formed in the drop-out preventing portion.
Axial direction from the first bearing hole and the second bearing hole
Between the pair of hooking portions, a protruding portion that restricts coming out in the direction
Support structure for the provided door. 2. The door has a side wall facing the opening side of the box body in a closed state, and the shaft portion extends from the center side of the back surface of the door toward the peripheral side wall of the first bearing hole. The support structure for a door according to claim 1 , wherein the support structure is inserted through the second bearing hole. Wherein the shaft portion of the shaft member, the protrusion one hook portion according to claim 1 or claim in a position for locking has a length that does not deviate from the second bearing hole 2 The door support structure described.