JP2013192307A - Packing structure of housing door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the rigidity of a housing door as well as the airtightness achieved by closing the housing door in a packing structure of the housing door.SOLUTION: A packing structure of a housing door includes: an end surface 11 of an opening 10 formed in a housing 1; an annular protruding frame 5 provided at a position, which is located at the peripheral part side on an inner surface 21 of a housing door 2 for opening and closing the opening 10 and faces the end surface 11 when the housing door 2 is closed, so as to protrude; and an annular packing 6 formed by an elastic material and supported by the protruding direction side of the protruding frame 5. The packing 6 is placed in pressure contact with the end surface 11 when the housing door 2 is closed. The protruding frame 5 includes: an annular reinforcement part 51 where an annular flat joining surface 51a, which is joined to the peripheral part side of the inner surface 21 on its surface, is formed; and an annular support part 52 protruding in a vertical direction opposite to the annular flat joining surface 51a and supporting the packing 6.

Description

  The present invention is a packing structure for a casing door that can be freely opened and closed with respect to a casing that houses a control panel or the like, and enhances hermeticity, rigidity (particularly rigidity against distortion), etc. when the casing door is closed. For the structure.

  The housing that houses the control panel, etc. can be opened and closed via a hinge or the like with respect to the housing opening side (for example, the annular end surface of the opening) so that the control panel can be taken in and out and maintained. A housing door is attached. The packing structure for obtaining the airtightness (the dustproofness, waterproofness, etc. of the housing) when the housing door is closed includes an end surface on the opening side of the housing, or a peripheral portion on the inner surface of the housing door. A structure in which an annular packing (for example, a packing made of an elastic material such as rubber or plastic) is provided on the side is known (for example, Patent Document 1).

  As this packing structure, for example, an annular projecting frame (for example, a plate-shaped projecting frame) formed so as to project in the vertical direction from the end face of the housing opening, and an edge of the projecting frame on the projecting direction side What is provided with a packing (for example, a packing having a hollow portion) that is provided and press-contacts to the inner surface side of the housing door in a closed state is known.

  However, in the packing structure as described above, although various studies have been made in order to provide airtightness at the time of closing the door, characteristics other than the airtightness, for example, imparting rigidity to the distortion and bending of the housing door are provided. Was never supposed.

JP-A-11-41720.

  The inventor of the present application has paid attention to the following problems in the packing structure of the casing door that requires airtightness when the door is closed in accordance with the background art as described above. That is, not only the airtightness due to the housing door when the door is closed but also the rigidity of the housing door can be obtained.

  The packing structure of the housing door according to the present invention is a creation based on a technical idea that has been made after the earnest research of the present inventor in order to solve the above-described problems.

  Specifically, one aspect of the packing structure of the casing door according to the present invention includes the end face of the opening formed in the casing and the peripheral side of the inner side surface of the casing door for opening and closing the opening. An annular projecting frame projecting from a position facing the end face of the opening when the housing door is closed, and an annular packing made of an elastic material and supported on the projecting direction side of the projecting frame, Provided with a structure in which the packing is pressed against the end face of the opening of the casing when the casing door is closed, and the protruding frame is annularly joined to the peripheral edge side of the inner side surface of the casing door. An annular reinforcing portion formed with a flat joint surface, and an annular support portion that protrudes from the reinforcing portion with respect to the vertical direction opposite to the annular flat joint surface and supports the packing, To do.

  A member provided on an end surface of the opening, the annular member having an annular flat pressure contact surface formed at a position facing the protruding frame when the housing door is closed; A structure may be employed in which the packing is pressed against the annular flat pressure contact surface when the door is closed. The said annular member can apply what consists of elastic materials.

  Furthermore, the said protrusion frame can apply what the cross-sectional shape of the thickness direction was formed in L shape. The packing includes a leg portion that grips and fixes the support portion by a groove having an inner wall surface whose U-shaped cross-sectional shape in the packing thickness direction, and a hollow shape that is open when the housing door is closed. And a hollow portion that is elastically deformed by being in pressure contact with the end face. The housing door is provided with a hinge that connects between the outer peripheral side of the protruding frame on the peripheral edge side of the inner side surface of the housing door and the outer peripheral side of the packing pressure contact position on the end surface of the opening of the housing. It may be provided so that it can be freely opened and closed.

  As described above, according to the present invention, in the casing door packing structure that requires airtightness when the door is closed, it is possible to obtain not only the airtightness due to the housing door when the door is closed but also the rigidity of the housing door. It becomes.

The schematic perspective view explaining the packing structure in a present Example (at the time of door opening). The fragmentary sectional view explaining the packing structure in a present Example (The figure shown in the state at the time of the door closing in the AA cross section of FIG. 1). The schematic diagram (inside surface) of the housing | casing door explaining the packing structure in a present Example.

  The casing door packing structure according to the embodiment of the present invention is a structure in which a protruding frame having a reinforcing portion for increasing the rigidity of the casing door is provided in the casing door, and packing is provided on the protruding frame.

  The projecting frame in the conventional packing structure was formed on either the inner surface of the housing door or the end surface of the housing opening for the purpose of simply supporting the packing, except for the function of supporting the packing. Was never supposed. For example, the opening / closing operation of the housing door causes a considerable stress on the housing door, which may be distorted or curved and deformed. When deformed in this way, for example, between the packing and the pressure contact position of the packing (the inner surface of the housing door or the end surface of the housing opening), the pressure contact of the packing becomes non-uniform when the door is closed, resulting in poor adhesion and gaps. Resulting in loss of airtightness.

  On the other hand, the protruding frame of the present embodiment includes an annular reinforcing portion formed with an annular flat joint surface that is surface-bonded to the peripheral edge side of the inner side surface of the housing door. Increases the rigidity of the door. That is, even if the stress as described above is generated, distortion and bending of the housing door can be suppressed by the reinforcing portion, and airtightness is easily maintained (maintained for a long period of time compared to the conventional case). As described above, there has not been a packing structure that includes a protruding frame that supports the packing on the housing door and includes a reinforcing portion that increases the rigidity of the housing door in the protruding frame.

  As long as the protruding frame is provided with the reinforcing portion and the supporting portion as described above, as an example, the cross-sectional shape in the thickness direction is L-shaped or T-shaped. Can be mentioned. For example, a long plate-like metal member is formed into an annular shape, and the reinforcing portion and the support portion are integrally formed by bending so that the cross-sectional shape in the thickness direction is L-shaped. A frame is mentioned. In addition, the projecting frame may be simply made of the same material (metal material, etc.) as the housing and the housing door. For example, a relatively high strength material or the width of the projecting frame may be used. By increasing the direction (for example, increasing the area of the annular flat joint surface), there is a possibility that the above-described distortion and bending of the housing door can be further suppressed.

  Furthermore, the shape of the support portion may be a shape that can be pressed against the end surface of the housing opening (or the annular flat pressure contact surface of the annular member) when the applied packing is closed. For example, when the door is closed, a predetermined distance is secured between the front end portion of the support portion and the end surface of the housing opening (or the annular flat pressure contact surface of the annular member), and the front end portion of the support portion and the housing opening portion are For example, the length of the support portion in the protruding direction may be set so that the packing (packing supported by the support portion) can be elastically deformed and interposed between the end surface and the end surface.

  The packing may have a structure in which the packing is directly pressed against the end face of the opening when the casing is closed, but an annular member having an annular flat pressing face is provided on the end face of the opening. You may make it press-contact with. By using such an annular member, for example, even if the end surface of the opening is uneven, it is easy to press the packing uniformly against the annular member when the door is closed, and it is easy to maintain airtightness. In this annular member, a member made of the same material as that of the housing and the housing door may be applied. However, when a member made of an elastic member is applied, the contact surface between the annular member and the packing when the door is closed. May become wide and airtightness may be easily obtained.

  Further, the packing is known in the field of the packing structure of the housing door, for example, as long as it is pressed against the end face of the housing opening (or the annular flat pressure contact surface of the annular member) when the door is closed. Can be applied as appropriate. As such packing, the structure provided with the leg part supported by the support part of a protrusion frame, and a hollow-shaped hollow part is mentioned. For example, the leg portion is formed with a groove having an inner wall surface whose U-shaped cross-sectional shape in the thickness direction, and a structure in which the support portion can be sandwiched and fixed by the inner wall surface of the groove is exemplified. Examples of the material that elastically deforms when pressed as described above include elastic materials such as rubber and plastic.

  Further, if the casing is a casing door that can be freely opened and closed with a structure in which the packing is pressed against the end face of the casing opening (or the annular flat pressure contact surface of the annular member) as described above, the casing door is attached. The structure is not limited. As an example of this mounting structure, a hinge is provided between the outer peripheral side of the protruding frame on the peripheral edge side of the inner side surface of the housing door and the outer peripheral side of the packing pressure contact position on the end surface of the opening of the housing. Is mentioned.

<Example>
As shown in FIGS. 1 to 3, the packing structure of the present embodiment includes a structure in which a rectangular flat plate-shaped case door 2 is provided to be openable and closable with respect to the case 1 via a hinge 3.

  Reference numeral 4 denotes an annular member provided on the end surface 11 of the opening 10 of the housing 1, and the side facing the peripheral portion of the inner surface 21 of the housing door 2 when the housing door 2 is closed (described later). An annular flat pressure contact surface 41 is formed at a position where the packing 6 supported by the protruding frame 5 is pressed. Reference numeral 5 denotes an annular projecting frame that projects from the peripheral edge of the inner side surface 21 of the housing door 2. The projecting frame 5 has an L-shaped cross-sectional shape in the thickness direction, an annular reinforcing portion 51 formed with an annular flat joint surface 51 a that is surface-bonded to the inner side surface 21, and the reinforcing portion 51. And an annular support portion 52 protruding in the vertical direction from the peripheral portion on the outer peripheral side (projecting toward the annular flat pressure contact surface 41 in FIG. 2), and is fixed by fastening means 53 such as a bolt.

  Reference numeral 6 denotes a packing supported by the support portion 52, and includes a leg portion 61 in which a groove 61a having an inner wall surface whose U-shaped cross section in the thickness direction is formed, and a hollow shape (in FIG. 2). And a hollow portion 62 that is elastically deformed by being pressed against the annular flat pressure contact surface 41 when the door is closed. The packing 6 is supported with respect to the protruding frame 5 by sandwiching the leg portion 61 so as to cover the tip end portion of the support portion 52 with the inner wall surface of the groove 61a.

  The hinge 3 includes a housing-side hinge member 31 fixed to the outer peripheral side of the annular member 4 with respect to the pressure contact position with the packing 6, and a housing fixed to the outer peripheral side of the protruding frame 5 on the inner side surface 21 of the housing door 2. The body door side hinge member 32 is rotatably connected by a rotation shaft 33.

  Reference numeral 7 denotes a locking means provided with hooks 71 a to 71 c provided on the inner side surface 21 of the housing door 2 and movable via a link mechanism 72, and is attached to the outer side surface of the housing door 2. The lock mechanism 72 can be locked and unlocked by a handle (not shown) interlocked with the link mechanism 72. As an example of locking by the locking means 7 at the time of closing the door, the above-mentioned metal fittings 71 a to 71 c are placed inside the opening 10 of the housing 1 in a state where the hollow portion 62 of the packing 6 is pressed against the annular flat pressure contact surface 41. The structure which makes it latch with respect to the hook (FIG. 2 hook 73) attached to is mentioned.

  Although the present invention has been described in detail only for the specific examples described above, it is obvious to those skilled in the art that various modifications can be made within the scope of the technical idea of the present invention. It is natural that such changes and the like belong to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Housing | casing 10 ... Opening part 11 ... End surface 2 ... Housing door 3 ... Hinge 4 ... Annular member 41 ... Annular flat press-contact surface 5 ... Protruding frame 51 ... Reinforcement part 51a ... Annular flat joint surface 52 ... Supporting part 6 ... Packing

Claims (6)

With respect to the end face of the opening formed in the casing and the position facing the end face of the opening when the casing door is closed on the peripheral edge side of the inner surface of the casing door for opening and closing the opening A projecting annular projecting frame, and an annular packing made of an elastic material and supported on the projecting direction side of the projecting frame,
When the casing door is closed, the packing is pressed against the end face of the opening of the casing,
The protruding frame is
An annular reinforcing portion formed with an annular flat joint surface that is surface-bonded to the peripheral side of the inner side surface of the housing door;
An annular support portion that protrudes from the reinforcing portion with respect to the vertical direction opposite to the annular flat joint surface and supports the packing;
A casing door packing structure characterized by that. A member provided on the end face of the opening, and including an annular member having an annular flat pressure contact surface formed at a position facing the protruding frame when the housing door is closed;
The packing structure for a casing door according to claim 1, wherein when the casing door is closed, the packing is pressed against the annular flat pressure contact surface.   3. The casing door packing structure according to claim 2, wherein the annular member is made of an elastic material.   2. The casing door packing structure according to claim 1, wherein the protruding frame is formed in an L-shaped cross section in the thickness direction.   The packing includes a leg portion that grips and fixes the support portion by a groove having an inner wall surface whose U-shaped cross-sectional shape in the packing thickness direction, and a hollow shape that is open when the housing door is closed. A casing door packing structure according to claim 1, further comprising: a hollow portion that is pressed against and elastically deformed by being pressed against the end surface of the casing door.   The housing door is provided with a hinge that connects between the outer peripheral side of the protruding frame on the peripheral edge side of the inner side surface of the housing door and the outer peripheral side of the packing pressure contact position on the end surface of the opening of the housing. The casing door packing structure according to claim 1, wherein the casing door packing structure is openable and closable.

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