JPH10145057A - Frame attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the frame attaching structure, which can achieve the cost reduction by facilitating assembling and disassembling and reducing the number of parts and can readily satify the reference of mechanical strength such as the respective safety specification and product specifications. SOLUTION: Under the condition, wherein an assembled frame 18 is arranged and formed at the first engaging part of a main board 1 as the first frame, a bracket 3 as a coupling piece for positioning a cover 10 as a second frame for the board 1 to each direction of the three directions and an engaging part 12 are provided. At the engaging part 12, the cover 10 is positioned in each direction of the three dimensions with respect to the board 1 by the coupling with the bracket 3 arranged at the first engaged part of the cover 10. The respective shapes of the bracket 3 and the engaging part 12 are not substantially changed before and after and during the intermediate parts of the formation of the assembled frame 18, and are kept without any deformation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing mounting structure for accommodating electric and electronic equipment, mechanical equipment, and the like.

[0002]

2. Description of the Related Art Conventionally, an assemblable and disassemblable housing mounting structure for accommodating an electric or electronic device such as a facsimile or a printer or a mechanical device is disclosed in, for example, Japanese Patent Application Laid-Open No. 4-351157. Various types are known, including those described. In recent years, in particular, for a housing mounting structure in which a cover to be mounted is formed of a synthetic resin, the cover and the like can be easily recycled in order to save resources as part of global environmental protection. Structure is adopted.

One example of such recycling promotion is, for example, a housing mounting structure for a facsimile machine as shown in FIG. In FIG. 16, in order to attach a synthetic resin housing-like back cover 54A for accommodating a facsimile apparatus to a main body substrate of a facsimile apparatus (not shown), the lower side thereof is required to facilitate its assembly and disassembly. After being hooked and engaged, the back cover 54
A is closed and the upper side thereof is screwed, and the mainstream is to reduce the number of screwed portions to be fastened with the screws 53 as much as possible. In FIG.
Indicates hooks having wedge-shaped hooking claws 55a integrally formed at three places below the back cover 54A. The hook 55 is engaged with and engaged with an engaging hole (not shown in FIG. 16) of a bracket attached to a lower portion of the main body side plate as described later. Here, for the purpose of facilitating understanding and for convenience of description, the case mounting structure for mounting the back cover 54A on the main body substrate of the facsimile apparatus so as to be openable and closable will be described with reference to a diagram that is somewhat simplified in a model. It shall be.

In FIGS. 17 to 19, reference numeral 50 denotes a synthetic resin main body substrate, and reference numeral 54 denotes a simplified back cover 54A which can be opened and closed with respect to the main body substrate 50 of the facsimile apparatus. A bracket 51 made of synthetic resin and having a square hole-shaped engaging hole 51 a is attached to a lower portion of the main body substrate 50 in the figure via a screw 53. In the upper part of the figure of the main body substrate 50, a screw hole 5 is provided.
A fastening portion 52 having 2a is formed so as to protrude upward.
On the other hand, a hook 55 having a hook 55a similar to that shown in FIG. At the top of the cover 54 in the drawing, a screw through hole 5 is provided.
A fastening portion 56 having 6a is formed so as to protrude upward.

In order to attach the cover 54 to the main body substrate 50, as shown in FIGS. 17 and 18, the hook 55a of the hook 55 of the cover 54 is pressed from below the bracket 51 as indicated by a thick arrow direction A. The hook 54 is engaged in the engaging hole 51a of the bracket 51, and then the tightening portion 56 side of the cover 54 is rotated in the direction of the thick arrow B about the hook engaging portion as shown in FIG. The cover 54 is closed with respect to the main body substrate 50 and fastened and fixed with screws 53 as shown in FIG. 19 to 21, reference numeral 57 denotes an assembled housing formed by fixing the cover 54 to the main body substrate 50.

[0006]

However, FIG.
Or the case mounting structure as shown in FIG.
(Underwriters Laboratories) Safety Standards and C
There is a possibility that mechanical strength standards such as SA (Canadian Standards Association) safety standards or product standards in Japan that comply with these safety standards are not satisfied. That is, for example, the UL
In a so-called stress relief test in which a lower fitting portion of an assembly housing 57 as shown in FIG. May be deformed and the cover 54 may easily come off in the direction of the thick arrow C. FIG.
As shown in FIG. 1, the iron ball 59 is
In an impact test in which the iron ball 59 hangs from each direction in three-dimensional directions under predetermined conditions, the iron ball 59 is hung and swung clockwise in the figure to collide with the right wall of the cover 54 of the assembly housing 57. 54 may be displaced in the thick arrow direction C. That is, in the housing mounting structure as shown in FIGS. 16 to 19, in FIG. 17, in the XY plane orthogonal to the mounting surface ZP of the bracket 51 of the main body side plate 50, the X direction positioning on the left and right sides, the front and rear sides Although the positioning in the Y direction and the upper position in the Z direction are performed, it can be said that the lower position in the Z direction is not performed.

Therefore, in the conventional housing mounting structure as shown in FIGS. 16 to 19, in order to satisfy the mechanical strength standards such as the safety standards described above as a market product, the hook 55 described above is used. At present, it is possible to provide a complicated shape by extending upward and forming a retaining projection for retaining, or increasing the number of screwed portions. If a locking projection for retaining is formed, a slider or the like is frequently used as a mold, resulting in an increase in cost. It is necessary to set the distance and dimensions for fitting the locking projections for engagement and the engaging holes, or to make the hooking and lowering operation from the bottom during the hooking operation. There is a problem that the workability of assembling and disassembling is deteriorated due to unnecessarily troublesome operation, or the locking projection is damaged. Eventually, the above-mentioned countermeasures are against the flow of recycling promotion, resulting in poor assemblability and disassembly, increasing the number of parts, and increasing costs. Also, the hook 55 having the hook 55a as described above is attached to the cover 54.
In order to integrally mold with a synthetic resin, a slide or an inclined core must be used as a mold structure, which complicates the structure of the mold and further increases the cost.

Accordingly, the present invention has been made to solve such a problem, and a first object of the present invention is to achieve good assemblability and disassembly, and to reduce the number of parts to reduce costs. An object of the present invention is to provide a housing mounting structure that can be used. A second object is to provide a housing mounting structure which can easily satisfy the mechanical strength standards such as the above safety standards or product standards in addition to the first object. A third object is to provide, in addition to the above objects, a housing mounting structure capable of further reducing costs without using a slide or an inclined core in a housing made of synthetic resin.

[0009]

In order to achieve the above-mentioned object, the invention according to claim 1 includes a first housing and a first housing.
A second housing that can be opened and closed with respect to the housing, and a first engagement portion and a second engagement provided at least at two locations of the first housing for attaching the second housing to the first housing. A first engaged portion and a second engaged portion provided on the second housing corresponding to the first engaging portion.
A second engaged portion provided on the second housing corresponding to the engaging portion, wherein the first housing and the second housing are connected to the first engaging portion and the first engaged portion, respectively. The first housing and the second housing of the second housing are attached so as to be openable and closable through engagement with the second housing.
In a housing attachment structure in which an engaged portion is fixed by fastening means to form an assembled housing, the assembled housing provided in the first engaging portion of the first housing is formed. In the state, the fitting piece for positioning the second housing in each of the three-dimensional directions with respect to the first housing, and the fitting provided at the first engaged portion of the second housing. The second housing has a fitted portion positioned in each of three-dimensional directions with respect to the first housing by being fitted with the piece, and the fitting piece and the fitted portion are provided. Is characterized in that, before and after the formation of the assembled housing and during the formation of the assembled housing, the respective shapes are kept substantially unchanged.

According to a second aspect of the present invention, in the housing mounting structure according to the first aspect, the fitting piece is provided on a front side in a Y direction orthogonal to a mounting surface of the fitting piece in the first housing. A protruding Y protruding portion, an X protruding portion connected to the Y protruding portion and protruding left and right in the X direction orthogonal to the Y direction, and an X protruding portion connected to the X protruding portion and A Z tongue portion that is substantially Z-shaped when viewed from the front and extends upward in the Z direction orthogonal to the Y direction and then protrudes forward in the Y direction. The left and right engagement surfaces for X-direction positioning have left and right engagement surfaces for Y-direction positioning on the left and right sides of the X protruding portion, and the rear side has, An upper left engaging surface and an upper right engaging surface for positioning in the Z direction are provided on the right and left sides of the X protruding portion and above the X projecting portion. A front engagement surface for positioning in the Y direction is provided on the front side of the Z tongue piece extending upward, and a lower engagement for positioning in the Z direction is provided below the Z tongue piece protruding forward in the Y direction. Surfaces are respectively formed, and the fitted portion extends on both left and right sides so as to be engaged with the left engaging surface and the right engaging surface of the Y protruding portion, and A notch portion cut out across the front and rear sides to be engaged with the front engagement surface; and a left and right side outside the second housing and near the opening of the notch portion, and extend downward. A left engaged surface that is engaged with the left engaging surface of the Y protruding portion below the pair of projections inside the opening of the notch; And a right engaged surface engaged with the right engaging surface, and a left rear engaged with the left rear engaging surface of the X protruding piece portion on the front side of the pair of protrusions. A right rear engaged surface engaged with the right rear engaging surface is inside the notch and a front end of the front engaged surface is engaged with the front engaging surface of the Z tongue piece. An engagement surface is outside the second housing and between the left rear engagement surface and the front engagement surface, a lower left engagement with the upper left engagement surface of the X protruding piece portion. The engaged surface is outside the second housing and between the right rear engaged surface and the front engaged surface is engaged with the upper right engaging surface of the X protruding piece portion. An upper engaged surface engaged with the lower engaging surface of the Z tongue piece is located at a lower right engaged surface inside the second housing and at a front side of the front engaged surface. It is characterized by being formed.

According to a third aspect of the present invention, in the casing mounting structure according to the first aspect, the fitting piece is provided on a front side in a Y direction orthogonal to a mounting surface of the fitting piece of the first housing. A protruding Y protruding piece, connected to the Y protruding piece and protruding to the left and right in the X direction orthogonal to the Y direction;
X protruding portion having a left protruding piece and a right protruding piece extending upward in the Z direction orthogonal to the direction and the X direction, and connected to the X protruding piece and extending upward in the Z direction, and then in the Y direction And a Z tongue piece that is substantially Z-shaped when viewed from the front and protrudes to the front side of the front projection. Is a left engaging surface for X direction positioning, a right engaging surface for X direction positioning on the right side of the right protruding piece, and a left rear engaging surface for Y direction positioning on the rear side of the left protruding piece. However, a right rear engagement surface for Y-direction positioning is provided on the rear side of the right protruding piece, and a front engagement surface for Y-direction positioning is provided on the front side of the Z tongue piece extending upward in the Z direction. A lower engaging surface for positioning in the Z direction is formed below the Z tongue piece projecting forward in the Y direction, and the fitted part is provided on the upper side of the Y protruding piece. A step formed to be recessed outside the second housing to be engaged with the mating surface, and the X direction to be engaged with the left engaging surface and the right engaging surface of the X protruding piece. And the front and rear sides in the Y direction so as to be engaged with the left rear engagement surface, the right rear engagement surface and the front engagement surface of the Z tongue piece portion of the X protruding piece portion. A notched hole which is cut out across the stepped portion, a lower engaged surface engaged with the upper engaging surface is provided outside the stepped portion, and the X protruding piece is provided on both left and right sides of the notched hole. The left engaged surface engaged with the left engaging surface and the right engaged surface engaged with the right engaging surface of the portion are provided on the rear side of the notch hole in the X protruding piece portion. A front engagement surface engaged with the left rear engagement surface and the right rear engagement surface has a front engagement surface engaged with the front engagement surface of the Z tongue piece on the front side of the notch hole. The mating surface is inside the second housing. Said front on the front side of the engagement surfaces, wherein the engaged surface on which is engaged in the lower engagement surface of the Z tongue portion is formed respectively.

According to a fourth aspect of the present invention, in the housing mounting structure according to the first aspect, the fitting piece is located on a front side in a Y direction orthogonal to a mounting surface of the fitting piece in the first housing. A protruding first Y protruding portion, and a second Y formed in the first Y protruding portion and extending upward in a Z direction orthogonal to the Y direction.
A protruding piece, a Z tongue that is connected to the first Y protruding piece, extends forward in the Y direction, extends upward in the Z direction, and then projects forward in the Y direction; And an upper engaging surface for positioning in the Z direction above the first Y protruding piece.
A rear engagement surface for Y-direction positioning is provided on the rear side of the second Y protruding portion, and a front engagement surface for Y-direction positioning is provided on the front side of the Z tongue piece extending upward. A left engaging surface and a right engaging surface for positioning in the X direction are provided on the left and right sides of the Z tongue portion in the X direction orthogonal to the Y direction in the vicinity, and the Z tongue portion protruding forward is provided on the lower side. A lower engaging surface for positioning in the Z direction is formed, and the fitted portion is engaged with the rear engaging surface of the X projecting piece and the front engaging surface of the Z tongue piece. Notch holes cut out on both front and rear sides in the Y direction and on both left and right sides in the X direction so as to be engaged with the left engagement surface and the right engagement surface of the Z tongue piece. And a connecting portion formed on the rear side of the notch hole in the Y direction so as to be engaged with the upper engaging surface of the first Y protruding piece portion. The lower engagement surface engaged with the upper engagement surface of the first Y-projection portion is engaged with the side, and the rear engagement surface of the second Y-projection portion is engaged with the rear side of the cutout hole. A front engaged surface is engaged with the front engaging surface of the Z tongue piece on the front side of the notch hole, and the Z tongue piece is provided on both left and right sides of the notch hole. A left engaged surface engaged with the left engaging surface and a right engaged surface engaged with the right engaging surface are inside the second housing and the front engaged surface An upper engaged surface to be engaged with the lower engaging surface of the Z tongue portion is formed on the front side.

[0013] The invention according to claim 5 is the invention according to claims 1 to 4.
In the housing mounting structure according to any one of the above, the fitting piece is provided separately from the first housing.

The invention according to claim 6 is the first to fifth aspects.
In the housing mounting structure according to any one of the above, at least a second of the first housing, the fitting piece, and the second housing.
The housing is formed of a synthetic resin.

The invention according to claim 7 is the first to sixth aspects of the present invention.
In the housing mounting structure according to any one of the above, the fitting piece and the fitted portion may be configured such that when a predetermined range of mechanical stress is applied to the assembled housing from each of three-dimensional directions. , And is configured to maintain the assembled housing.

Here, "positioning in each of the three-dimensional directions" means that the first housing and the second housing are substantially positioned so that the assembled housing can be maintained. Depending on the use purpose and application of the assembly housing, the engagement / fitting portion between the fitting piece and the fitted portion is engaged / engaged in the three-dimensional direction with some play or gap in each direction. It shall include the state of fitting.

The opening and closing relationship between the first housing and the second housing is not limited to the case where the second housing can be opened and closed with respect to the first housing, and the first housing is connected to the second housing. It may be openable and closable.

The location of the fitting piece and the fitting target portion is not limited to the case where the fitting piece and the fitting target portion are provided as described above, but the fitting portion provided in the first engaging portion of the first housing. Instead of the piece, the fitted portion is provided in the first engaged portion of the first housing, and the fitted portion provided in the first engaged portion of the second housing is replaced with the fitted portion. The fitting piece may be provided in the first engagement portion of the second housing.

The first housing and the second housing may have a shape such that a space for accommodating a device or the like is formed therein when the first housing and the second housing are attached to each other by the aforementioned means to form an assembled housing. I just need. Therefore, one of the first housing and the second housing has a flat plate shape and the other has a housing shape, or both the first housing and the second housing have a flat shape. It may have a housing shape.

[0020]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In each drawing, each component is appropriately omitted for simplification of the drawing. Components that are configured as a pair and do not need to be specifically distinguished and described in the drawings will be replaced with the description by appropriately describing one of them for the sake of simplification of description. When explaining the shape of component parts and their arrangement position,
In order to clarify the three-dimensional directions in three dimensions, as shown in FIG. 1 and the like, the directions on both sides in the X direction indicated by arrows in the figure may be simply referred to as “left” and “right”. , The directions on both sides in the Y direction indicated by arrows in the figure are simply referred to as “front side” and “rear side”.
The directions on both sides in the Z direction indicated by the arrows in the figure may be simply referred to as “upper” and “lower”. In the above-described related art, the respective embodiments and modifications described below, components having substantially the same shape and the same function are denoted by the same reference numerals, and description thereof will be omitted as much as possible.

(Embodiment 1) With reference to FIGS. 1 to 8, a first embodiment of the invention (hereinafter, simply referred to as "Embodiment 1") according to the housing mounting structure of the present invention will be described. I do. In FIG. 1, reference numeral 1 indicates a main body substrate as a first housing, and reference numeral 10 indicates a cover as a second housing. The main substrate 1 has a substantially flat plate shape and is integrally formed of a synthetic resin. For example, a facsimile apparatus main body portion is attached to the main body substrate 1 side. The cover 10 has a housing shape and is integrally formed of a synthetic resin.

Hereinafter, in order to briefly describe the features of the present invention, the body substrate 1, the cover 10, and the like, including the embodiments described later, will be described in a simplified model. Similarly, in FIGS. 3 to 5 and the like, the engagement state between the engagement surfaces is such that the positional relationship can be clearly understood.
The gap is exaggerated. The cover 10 is configured to be openable and closable with respect to the main body substrate 1 by a structure described later. In order to attach the cover 10 to the main body substrate 1 so as to be openable and closable, a first engaging portion and a second engaging portion are provided at two positions on the upper side and the lower side in the Z direction of the main body substrate 1. A first engaged portion corresponding to the first engaging portion and a second engaged portion corresponding to the second engaging portion are provided at two locations on the upper side and the lower side in the Z direction of the cover 10, respectively. Is provided. The main body substrate 1 and the cover 10 are attached so as to be openable and closable via engagement and fitting between the first engagement portion and the first engaged portion, and the second engagement portion of the main body substrate 1 and the cover 10 are attached.
Is fixed to the second engaged portion by a screw 53 (not shown in FIG. 1, not shown in FIGS. 4 and 5) as a fastening means, so that the assembly housing 18 (not shown in FIG. 1, 4 and 5).

The first engaging portion of the main body substrate 1 includes an assembly housing 1
In the state in which the cover 8 is formed, the bracket 3 as a fitting piece for positioning the cover 10 in the three-dimensional direction with respect to the main body substrate 1 is provided. On the other hand, the first engaged portion of the cover 10 is hooked as an engaged portion in which the cover 10 is positioned with respect to the main board 1 in three-dimensional directions by being fitted to the bracket 3. A part 12 is provided.

The second engaging portion of the main body substrate 1 has a screw hole 2a
Is integrally formed so as to protrude upward in the Z direction. On the other hand, a fastening portion 11 having a screw through hole 11a is integrally formed on the second engaged portion of the cover 10 so as to protrude upward in the Z direction.

The bracket 3 is made of synthetic resin,
As shown in FIG. 1, FIG. 7 and FIG. 8, they are integrally formed in a substantially cross shape in plan view and in a substantially Z shape in front view. The bracket 3 is provided with a substrate mounting portion 7, which is fastened and fixed via a screw 53 to a lower portion of the mounting surface ZP of the bracket 3 on the main substrate 1. As described above, by fixing the bracket 3 to the main body substrate 1 by the fastening means such as the screw 53,
The versatility when using the bracket 3 for other members or the like can be increased. 3 to 5, the bracket 3
The illustration of the screw 53 in the mounting portion is omitted.

The bracket 3 has a Y protruding portion 4 bent at a right angle from the board mounting portion 7 and protruding forward from the board mounting portion 7 in the Y direction orthogonal to the mounting surface ZP, and connected to the Y protruding portion 4 in the Y direction. X protruding to the left and right in the X direction orthogonal to
The protruding piece 5 is connected to the Y protruding piece 4 extending forward in the Y direction of the X protruding piece 5 and extends upward in the Z direction in parallel with the mounting surface ZP. And a Z tongue piece 6 that is substantially Z-shaped in front view and protrudes parallel to the front side in the Y direction.

A left engaging surface 4a and a right engaging surface 4b for positioning in the X direction are formed on both left and right sides of the Y protruding portion 4, respectively. A left rear engagement surface 5c and a right rear engagement surface 5d for positioning in the Y direction are formed on both left and right sides on the rear side of the X protruding piece portion 5 as shown by a mesh pattern in FIG. An upper left engaging surface 5a and an upper right engaging surface 5b for positioning in the Z direction are formed on both left and right sides of the X protruding piece portion 5 and above the X projecting piece portion 5, respectively. On the front side of the Z tongue piece 6 extending upward in the Z direction, a front engagement surface 6b for positioning in the Y direction as shown by a satin pattern in FIG. 7, a lower engaging surface 6a for positioning in the Z direction is formed as shown by a mesh pattern in FIG.

On the other hand, the hook portion 12 is provided on both left and right sides so as to be engaged with the left engaging surface 4a and the right engaging surface 4b of the Y protruding piece portion 4, and is engaged with the Z tongue piece portion 6. A notch 13 cut out across the front and rear sides to be engaged with the mating surface 6b, and a left and right side extending outside the cover 10 and near the opening of the notch 13 and protruding downward. It has a left protrusion 14a and a right protrusion 14b as a pair of protrusions.
The hook portion 12 and the fastening portion 11 together with the cover 1
0.

The notch 13 has a rectangular cutout in the hook 12 and has an opening. On the lower side of the left projection 14a and the right projection 14b inside the opening of the cutout 13, a left engaged surface 13a engaged with the left engaging surface 4a and the right engaging surface 4b of the Y protruding piece 4 is provided. And a right engaged surface 13b. The pair of left projections 14a and right projections 14b have a rectangular parallelepiped shape. These left projections 1
On the front side of the right projection 4a and the right projection 14b, a right rear engagement surface engaged with the left rear engagement surface 14c and a right rear engagement surface 5d engaged with the left rear engagement surface 5c of the X protruding piece 5 is provided. A mating surface 14d is formed.

At the front end of the notch 13, a front engaged surface 17 which is engaged with the front engagement surface 6b of the Z tongue piece 6 is formed. Outside the cover 10 and between the left rear engaged surface 14c and the front engaged surface 17, the upper left engaging surface 5a of the X protruding piece portion 5 is provided.
The lower left engaged surface 15a (indicated by a mesh pattern in FIG. 2) which is engaged with the outer surface of the cover 10 and between the right rear engaged surface 14d and the front engaged surface 17 A lower right engaged surface 15b (shown by a mesh pattern in FIG. 2) to be engaged with the upper right engaging surface 5b of the X protruding piece portion 5 is formed. Cover 10
Inside the front side of the front engaged surface 17, the Z tongue piece 6
An upper engaged surface 16 (shown by a mesh pattern in FIG. 1) to be engaged with the lower engaging surface 6a is formed.

Here, the hooks 12 of the bracket 3 and the cover 10 are provided within a predetermined range of machines defined by UL safety standards, CSA safety standards, or product standards in Japan conforming to these safety standards. When a target stress is applied from the direction indicated by each thick arrow direction Y before, after Y, above Z, below Z in FIG. 5 and each direction indicated by each thick arrow direction X left and X right in FIG. The type of the synthetic resin is selected so as to satisfy the standard. Further, the thickness dimensions of the hooks 12 of the bracket 3 and the cover 10 are designed and set so as to satisfy the flame retardant grade of each standard. Further, it goes without saying that the dimensions and shape of each part including the thickness of the bracket 3 and the cover 10 are appropriately designed and set so as to satisfy each strength standard.
As can be seen from the above, the housing mounting structure according to the present invention is a technical idea of a mounting structure between housings,
The selection of materials and the setting of dimensions and shapes, including Embodiments 2 and 3 to be described later, are merely design matters, and a description of specific examples thereof will be omitted.

Next, how to attach the main body substrate 1 and the cover 10 will be described. As shown in FIG. 1, with the cover 10, the left engaged surface 1 in the notch 13 of the cover 10 is
The left engaging surface 4a and the right engaging surface 4b of the Y projection 4 of the bracket 3 are sandwiched between the 3a and the right engaged surface 13b. Next, referring to FIG.
The left rear engaged surface 14c and the right rear engaged surface 14d of the right and left protrusions 14b are hooked on the left rear engaging surface 5c and the right rear engaging surface 5d of the X protruding piece portion 5, respectively. 12 to the lower engaging surface 6a of the Z tongue piece 6.
Is rotated in the direction indicated by the thick arrow B in FIG.
Next, as shown in FIG. 4, the cover 10 is closed by bringing the fastening portion 11 side of the cover 10 into contact with the fastening portion 2 of the main body substrate 1, and a screw 53 as fastening means is inserted through the screw through hole 11 a. By screwing into the screw hole 2a, the cover 10 is fastened and fixed to the main body substrate 1, and the assembled housing 18 is formed. In this assembled housing 18, the bracket 3
And the respective engaged surfaces of the hooking portion 12
The engagement is appropriately performed in the engagement relationship described above.

Thus, the main body substrate 1 and the cover 10 are
In a state in which the assembly housing 18 is formed, the bracket 3 and the hook portion 12 are fitted to each other to be positioned in three-dimensional directions, and the fastening portion 2 of the main substrate 1 and the cover 10 are fastened. When the attachment portion 11 is fastened and fixed with the screw 53, the attachment portion 11 is positioned in each of the three-dimensional directions. As described above, the bracket 3 and the hook 12 are connected to the assembly housing 18.
Before and after and during the formation, without using, for example, a barbed locking projection or the like for preventing the retainer from elastically changing its size and shape during formation of the assembled housing as in the related art.
Since each shape is kept substantially unchanged, the operation force during assembly and disassembly is hardly required, and the workability of assembly and disassembly can be improved.

In FIG. 5 and FIG.
The mechanical stress in each predetermined range defined by the safety standard, the CSA safety standard, or the product standards in Japan based on these safety standards is applied to the cover 10 in the direction indicated by the thick arrow Y in FIG. When added, the left rear engaged surface 14c of the cover 10 is on the left rear engaging surface 5c of the bracket 3, and the right rear engaged surface 14d of the cover 10 is on the right rear engaging surface 5d of the bracket 3. The hooks 12 of the cover 10 do not come off by being hit and locked. When the above mechanical stress is applied to the cover 10 in the direction after the direction of the thick arrow Y in FIG. 5, the front engaged surface 17 of the cover 10 hits the front engagement surface 6b of the bracket 3 and is locked. As a result, the hook portion 12 of the cover 10 does not come off.

When the above-mentioned mechanical stress is applied to the cover 10 in the direction indicated by the thick arrow Z in FIG. 5, the upper engaged surface 16 of the cover 10 comes into contact with the lower engaging surface 6a of the bracket 3. By being locked, the cover 10
Hook 12 does not come off. The mechanical stress is
When the cover 10 is applied to the cover 10 in the direction indicated by the thick arrow Z in FIG. 5, the lower left engaged surface 15 a of the cover 10 is attached to the upper left engagement surface 5 a of the bracket 3, and the lower right engaged surface of the cover 10 is engaged. The hooks 15b of the cover 10 do not come off because the 15b comes into contact with the upper right engagement surface 5b of the bracket 3 and is locked.

When the mechanical stress is applied to the cover 10 in the direction indicated by the thick arrow X and leftward in FIG. 6, the right engaged surface 13b of the cover 10 The hooking portion 12 of the cover 10 does not come off by being locked by hitting the cover 4b. The mechanical stress is applied to the cover 1 in the direction indicated by the thick arrow X in FIG.
0, the left engaged surface 1 of the cover 10
The hooking portion 12 of the cover 10 does not come off because the 3a hits the left engaging surface 4a of the bracket 3 and is locked.
That is, the mechanical stress is applied to each thick arrow Y
When added to the cover 10 in the directions indicated by front, after Y, Z above, Z below, X left, and X right, the bracket 3
The assembly housing 18 is maintained without being detached at the hook fitting portion between the hook and the hook portion 12.

Therefore, according to the first embodiment, it is possible to easily satisfy the respective mechanical strength standards such as the safety and product standards. In addition, the assemblability and disassembly are good, and the number of parts can be reduced to reduce costs. Furthermore, since the slider and the inclined core do not need to be used in the mold structure for molding the hook portion 12 and the like of the cover 10, the cost can be further reduced.

(Embodiment 2) Referring to FIGS. 9 to 12, a second embodiment of the invention (hereinafter, simply referred to as "Embodiment 2") according to the housing mounting structure of the present invention will be described. I do. The second embodiment is different from the first embodiment in that a cover 25 as a second housing is used instead of the cover 10.
And that a bracket 19 as a fitting piece is provided instead of the bracket 3.

The cover 25 is different from the cover 10 of the first embodiment in that the hook 25 is replaced by the first cover 25.
The only difference is that a hook portion 26 is provided on the engaged portion.

The bracket 19 is made of a synthetic resin, and as shown in FIG. 9, is integrally formed in a substantially cross shape in plan view and in a substantially Z shape in front view. The bracket 19 is provided with the board mounting portion 7 in the same manner as in the first embodiment, and the mounting surface ZP of the bracket 19 on the main body substrate 1 is provided.
Is fastened and fixed to the lower part of the body via a screw 53. As described above, by fixing the bracket 19 to the main body substrate 1 with the fastening means such as the screw 53, the versatility when the bracket 19 is used for another member or the like can be increased. 11 and 12, the illustration of the screw 53 in the mounting portion of the bracket 19 is omitted.

The bracket 19 has a Y protruding portion 20 bent at a right angle from the board mounting portion 7 and protruded forward from the substrate mounting portion 7 in the Y direction orthogonal to the mounting surface ZP, and is connected to the Y protruding portion 20 in the Y direction. X protruding part 2 having a left protruding piece 21a and a right protruding piece 21b protruding left and right in the X direction orthogonal to the X direction and extending upward in the Z direction orthogonal to the Y direction and the X direction
1 and connected to the Y protruding portion 20 extending forward in the Y direction of the X protruding portion 21, extending upward in the Z direction in parallel with the mounting surface ZP, and then extending in parallel with the Y protruding portion 20. And a Z tongue piece 6 that is substantially Z-shaped when viewed from the front and protrudes forward in the direction.

As shown by a mesh pattern in FIG. 9, an upper engaging surface 20 for positioning in the Z direction is
a is formed. A left engaging surface 21c for X-direction positioning is formed on the left side of the left projecting piece 21a, and a right engaging surface 21d for X-direction positioning is formed on the right side of the right projecting piece 21b. A rear left engagement surface 21e for Y-direction positioning is formed on the rear side of the left projection 21a, and a right rear engagement surface 21f for Y-direction positioning is formed on the rear side of the right projection 21b. On the upper side of the left rear engagement surface 21e and the right rear engagement surface 21f, a guide surface 21g that is rounded and inclined toward the rear side is formed to smoothly guide the rear engaged surface 31 of the hook portion 26. ing. A front engagement surface 6b for positioning in the Y direction is provided on the front side of the Z tongue piece 6 extending upward in the Z direction.
However, a lower engaging surface 6a for positioning in the Z direction is formed below the Z tongue piece 6 projecting forward.

On the other hand, the hook portion 26 has a stepped portion 28 formed to be recessed outside the bottom of the cover 25 (downward in the Z direction) so as to be engaged with the upper engagement surface 20a of the Y protruding piece portion 20; The left and right rear engagement surfaces 21e and 21e of the X protruding portion 21 extend over the left and right sides in the X direction so as to be engaged with the left engaging surface 21c and the right engaging surface 21d of the X protruding portion 21. It has a notch hole 27 cut out on both front and rear sides in the Y direction so as to be engaged with the mating surface 21f and the front engagement surface 6b of the Z tongue piece portion 6. The hook portion 26 is formed integrally with the cover 10 together with the fastening portion 11 described above.

On the outer bottom surface of the step portion 28, as shown by a mesh pattern in FIG.
The lower engaged surface 29 to be engaged with a is formed. On the left and right sides of the notch 27, the left engaging surface 21c of the X protruding piece 21 is provided.
Are formed on the left engaged surface 27a and the right engaged surface 27b engaged with the right engaging surface 21d. At the rear end of the notch 27, a rear engaged surface 31 that is engaged with the left rear engaging surface 21e and the right rear engaging surface 21f of the X protruding piece portion is formed. At the front end of the notch 27, a front engaged surface 30 that is engaged with the front engaging surface 6b of the Z tongue piece 6 is provided inside the cover 25 and on the front side of the front engaged surface 30. , An upper engaged surface 32 (shown by a mesh pattern in FIG. 9) which is engaged with the lower engaging surface 6a of the Z tongue piece portion 6.

Next, how to attach the main body substrate 1 and the cover 25 will be described. As shown in FIG. 9, with the cover 25, the left engagement surface 27 a and the right engagement surface in the notch hole 27 of the hook portion 26 with respect to the main body substrate 1 as indicated by a thick arrow direction A in FIG. The left engaging surface 21c and the right engaging surface 21d of the X projecting piece 21 of the bracket 19 at the mating surface 27b
So as to sandwich it. Next, in FIG.
6 is hooked on the left rear engaging surface 21e and the right rear engaging surface 21f of the X protruding piece portion 21 while the rear engaged surface 31 is along each guide surface 21g, and the upper engaging portion of the hook portion 26 is engaged. The mating surface 32 is rotated in the direction indicated by the thick arrow B in the drawing so as to contact the lower engaging surface 6a of the Z tongue piece 6. Next, although not shown in FIG. 12, the cover 25 is closed by bringing the fastening portion 11 side of the cover 25 into contact with the fastening portion 2 of the main body substrate 1, and a screw 53 as fastening means is threaded. By inserting the cover 25 into the hole 11a and screwing it into the screw hole 2a, the cover 25 is fastened and fixed to the main body substrate 1 to form the assembled housing 33. In this assembled housing 33, the bracket 19
And each of the engaged surfaces of the hooking portion 26,
The engagement is appropriately performed in the engagement relationship described above.

Thus, the main body substrate 1 and the cover 25 are
In a state where the assembled housing 33 is formed, the bracket 19 and the hook portion 26 are fitted to each other to be positioned in three-dimensional directions, and the fastening portion 2 of the main substrate 1 and the cover 25
3 is fastened and fixed to the tightening portion 11 with a screw 53.
Positioning is performed in each dimension direction. As described above, since the bracket 19 and the hook portion 26 are held substantially unchanged without changing their shapes before, during, and after the formation of the assembly housing 33, the operating force during the assembly is substantially reduced. It is not necessary, and the workability of assembling and disassembling can be improved.

As shown in FIGS. 5 and 6, the mechanical stress in the predetermined range is applied to the cover 2 from three-dimensional directions.
5, the bracket 19 does not come off at the hook fitting portion between the bracket 19 and the hook portion 26.
3 will be maintained.

Therefore, according to the second embodiment, it is possible to easily satisfy each mechanical strength standard such as the above-mentioned safety and product standards. In addition, the assemblability and disassembly are good, and the number of parts can be reduced to reduce costs. Furthermore, since the slider and the inclined core do not need to be used in the mold structure for forming the hook portion 26 of the cover 25 and the like, the cost can be further reduced.

(Embodiment 3) With reference to FIGS. 13 to 15, a description will be given of an embodiment (hereinafter simply referred to as "Embodiment 3") of a third invention according to a housing mounting structure of the present invention. I do. The third embodiment is different from the first embodiment in that a cover 4 as a second housing is used instead of the cover 10.
The only difference is that the bracket 35 has 0 as a fitting piece instead of the bracket 3.

The cover 40 is different from the cover 10 of the first embodiment in that the hook 12 is replaced by the first cover 40.
The only difference is that a hook portion 41 is provided on the engaged portion.

The bracket 35 is made of a synthetic resin, and has a front side integrally formed in a substantially Z-shape in a front view as shown in FIGS. The board mounting portion 7 is formed on the bracket 35 in the same manner as in the first embodiment, and is fastened and fixed via a screw 53 to a lower portion of the mounting surface ZP of the bracket 35 on the main board 1. As described above, by fixing the bracket 35 to the main body substrate 1 with the fastening means such as the screw 53, the versatility when the bracket 35 is used for another member or the like can be increased. In FIGS. 14 and 15, the illustration of the screw 53 in the mounting portion of the bracket 35 is omitted.

The bracket 35 has a first Y protruding portion 36 which is bent at a right angle from the board mounting portion 7 and protrudes forward from the substrate mounting portion 7 in the Y direction orthogonal to the mounting surface ZP, and is formed in the first Y protruding portion 36. And connected to the second Y protruding piece 37 and the first Y protruding piece 36 extending upward in the Z direction orthogonal to the Y direction,
After extending upward in the Z direction parallel to the mounting surface ZP, the first
It has a Z tongue piece 6 that is substantially Z-shaped when viewed from the front and protrudes forward in the Y direction in parallel with the Y protruding piece 36.

An upper engaging surface 36a for positioning in the Z direction is formed above the first Y protruding piece 36. A rear engagement surface 37a for positioning in the Y direction is provided on the rear side of the second Y protrusion 37.
Are formed. A front engaging surface 6b for Y-direction positioning is formed on the front side of the Z tongue piece 6 extending upward. On the left and right sides in the X direction orthogonal to the Y direction of the Z tongue piece 6 in the vicinity of the front engagement surface 6b, a left engagement surface 6c and a right engagement surface 6d for X direction positioning have a Z tongue protruding forward. A lower engaging surface 6a for positioning in the Z direction is formed on the lower side of the piece 6 respectively.

The hook portion 41 extends over the front and rear sides in the Y direction so as to be engaged with the rear engagement surface 37a of the second Y projection 37 and the front engagement surface 6b of the Z tongue. A notch hole 42 cut out on both left and right sides in the X direction to be engaged with the left engagement surface 6c and the right engagement surface 6d of the tongue piece portion 6;
Notch hole 4 to be engaged with upper engagement surface 36a of projecting piece 36
2 has a connecting portion 43 formed on the rear side in the Y direction.

Below the connecting portion 43, the first Y projection 36
A lower engaged surface 43a to be engaged with the upper engaging surface 36a is formed. On the rear side of the notch hole 42, a second Y projection 37 is provided.
A rear engaged surface 45 to be engaged with the rear engaging surface 37a is formed. On the front side of the notch hole 42, a front engaged surface 44 to be engaged with the front engagement surface 6b of the Z tongue piece 6 is formed.
The left and right engagement surfaces 6c of the Z tongue piece 6 are provided on both left and right sides of the notch hole 42, respectively.
Are formed on the left engaged surface 42a and the right engaged surface 42b engaged with the right engaging surface 6d.
Inside the cover 40 and on the front side of the front engaged surface 44,
As shown in a mesh pattern in FIG. 13, upper engagement surfaces 46 to be engaged with the lower engagement surface 6 a of the Z tongue piece 6 are formed.

Next, how to attach the main body substrate 1 and the cover 40 will be described. As shown in FIG.
The Z tongue piece 6 and the second Y protruding piece 37 of the bracket 35 are fitted into the notch hole 42 of the hooking part 41 as shown by the thick arrow direction A in FIG. Next, in FIG. 14, the rear engaged surface 45 of the hook portion 41 is
And the upper engaging surface 46 of the hooking portion 41 is rotated in the direction indicated by the thick arrow B in the drawing so as to contact the lower engaging surface 6a of the Z tongue piece 6. . Then Figure 1
Although not shown in FIG. 5, the cover 40 is closed by bringing the fastening portion 11 side of the cover 40 into contact with the fastening portion 2 of the main body substrate 1, and a screw 53 serving as fastening means is inserted into the screw through hole 11 a. The cover 40 is fastened and fixed to the main body substrate 1 by screwing into the screw hole 2 a to form an assembled housing 48. In the assembled housing 48, the respective engagement surfaces of the bracket 35 and the respective engaged surfaces of the hook portions 41 are appropriately engaged in the aforementioned engagement relationship.

Thus, the main body substrate 1 and the cover 40
In a state in which the assembly housing 48 is formed, the bracket 35 and the hooking portion 41 are fitted to each other to position in three-dimensional directions, and the fastening portion 2 of the main body substrate 1 and the cover 40
3 is fastened and fixed to the tightening portion 11 with a screw 53.
Positioning is performed in each dimension direction. As described above, since the bracket 35 and the hook portion 41 remain substantially unchanged without changing their shapes before, during, and after the formation of the assembly housing 48, the operating force at the time of assembly is substantially reduced. It is not necessary, and the workability of assembling and disassembling can be improved.

As shown in FIGS. 5 and 6, the mechanical stress in the predetermined range is applied to the cover 4 from each three-dimensional direction.
0, the bracket 35 does not come off at the hooking fitting portion between the bracket 35 and the hooking portion 41.
8 will be maintained.

Therefore, according to the third embodiment, it is possible to easily satisfy each mechanical strength standard such as each safety and product standard. In addition, the assemblability and disassembly are good, and the number of parts can be reduced to reduce costs. Although a slider or an inclined core must be used for forming the hook portion 41 of the cover 40, the strength of the cover 40 itself can be increased because of the connection portion 43.

In the first to third embodiments and the like, the second engaging portion of the main body substrate 1 and the second engaged portions of the covers 10, 25, and 40 are fixed with the screws 53 as fastening means. However, the present invention is not limited to this. For example, the fastening means may be a so-called double clip provided with a male clip and a female clip, for example, locking with a barbed projection for retaining.

In the first to third embodiments, the engagement between the first engagement portion and the first engagement portion and the second engagement portion and the second engagement portion provided at at least two places are provided. Each of the assembled housings 18, 33, and 48 is formed by fixing the assembly housing. However, it is needless to say that three or more places may be provided according to the purpose and use of the assembled housing. .

In the first to third embodiments, the brackets 3, 19, and 35 as fitting pieces are provided separately from the main body substrate 1. However, the present invention is not limited to this, and the above-described advantages are desired. If it is not necessary, it may be formed integrally with the main body substrate 1. Similarly, the hook portion 12 as the fitted portion,
26, 41 are covers 10, 25,
Although it is integrally molded with 40, the present invention is not limited to this, and if the above-mentioned advantages do not have to be desired, the second housing and the second housing may be separately fastened and fixed by fastening means such as screws. You may have sex.

In the first to third embodiments, the main board 1 as the first housing, the brackets 3, 19, and 35 as fitting pieces, and the covers 10 as the second housing,
Although 25 and 40 are all made of synthetic resin, the present invention is not limited to this, and the first housing and the fitting piece may be formed of sheet metal or the like. When it is made of synthetic resin, each mechanical strength standard such as the above safety and product standards can be applied. Furthermore, if the above-mentioned advantages do not have to be desired, the first housing, the fitting piece, the fitted portion, and the second
The housing may be entirely formed of sheet metal or the like, and even in this case, the assemblability and disassembly are improved according to the product, and the number of parts such as fastening means is reduced to reduce costs. Down can be planned.

As described above, the present invention has been described with respect to the specific embodiments of the present invention. However, the configuration of the present invention is not limited to the above-described first to third embodiments. It will be apparent to those skilled in the art that various embodiments and examples of the present invention may be configured according to the necessity and application within the scope of the present invention.

[0065]

As described above, claims 1 to 4
According to the invention described above, with the above configuration, it is possible to provide a housing mounting structure that is easy to assemble and disassemble, and that can reduce the number of parts and reduce costs.

According to the fifth aspect of the present invention, since the fitting piece is provided separately from the first housing, the fitting piece can be easily used for other parts. So,
Its versatility can be increased.

According to the invention described in claim 6, the first housing,
Since at least the second housing of the fitting piece and the second housing is formed of a synthetic resin, it is possible to manufacture the housing in a lightweight and inexpensive manner in addition to the effects of the inventions. According to the second and third aspects of the present invention, the cost can be further reduced without using a slide or an inclined core in a mold. According to the fourth aspect of the present invention, since the connecting portion is provided, the strength of the second housing itself can be increased.

According to the seventh aspect of the present invention, the fitting piece and the fitted portion are mounted on the assembly housing when a predetermined range of mechanical stress is applied to the assembly housing from each of the three-dimensional directions. Is provided so as to provide a housing mounting structure that can easily satisfy the mechanical strength standards such as the safety standards or product standards described above in addition to the effects of the inventions. can do.

[Brief description of the drawings]

FIG. 1 is a simplified perspective view of a housing mounting structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the cover according to the first embodiment when viewed from the bottom side.

FIG. 3 is a partial cross-sectional front view showing how to attach a cover to a main board according to the first embodiment.

FIG. 4 is a partial cross-sectional front view showing how to attach a cover to the main body substrate in the first embodiment.

FIG. 5 is a partial cross-sectional front view showing an operation of applying a mechanical stress to the cover of the assembled housing in the first and second directions in the first embodiment.

FIG. 6 is a perspective view of a main part showing an operation of applying a mechanical stress to the cover of the assembled housing from the direction X in the first embodiment.

FIG. 7 is a perspective view of a main part showing the engagement position of the hooking part with the bracket according to the first embodiment when viewed from the bottom side.

FIG. 8 is a perspective view of the main part of the bracket showing the engagement position of the hooking part with respect to the bracket according to the first embodiment, when viewed from the rear with the main part of the bracket upside down.

FIG. 9 is a simplified perspective view of a housing mounting structure according to a second embodiment.

FIG. 10 is a perspective view of a main part when the cover according to the second embodiment is viewed from the bottom surface side.

FIG. 11 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate in the second embodiment.

FIG. 12 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate according to the second embodiment.

FIG. 13 is a simplified perspective view of a housing mounting structure according to a third embodiment.

FIG. 14 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate in the third embodiment.

FIG. 15 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate in the third embodiment.

FIG. 16 is a perspective view showing a specific example of mounting a cover in a conventional housing mounting structure.

FIG. 17 is a perspective view schematically showing a conventional housing mounting structure.

FIG. 18 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate in a conventional housing mounting structure.

FIG. 19 is a partial cross-sectional front view of a main part showing how to attach a cover to a main body substrate in a conventional housing mounting structure.

FIG. 20 is a partial cross-sectional front view of a main part showing a problem in a conventional housing mounting structure.

FIG. 21 is a partial cross-sectional front view of a main part showing a problem in a conventional housing mounting structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body board | substrate as a 1st housing | casing 2 Fastening part arrange | positioned at the 2nd engaging part 3,19,35 Bracket as a fitting piece arrange | positioned at the 1st engaging part 4,20 Y protrusion piece part 5, 21 X protruding piece 6 Z tongue piece 10, 25, 40 Cover as second housing 11 Fastening part 12, 26, 41 first engaged part disposed on second engaged part Hook portion as a fitted portion disposed in the notch 13 Notch portion 18, 33, 48 Assembled housing 27, 42 Notch hole 36 First Y protruding portion 37 Second Y protruding portion X Of each of three-dimensional directions X direction Y Y direction of three-dimensional directions Z direction ZP of three-dimensional directions ZP Mounting surface of bracket as fitting piece

Claims (7)

[Claims] 1. A first housing, a second housing that can be opened and closed with respect to the first housing, and at least two locations on the first housing for attaching the second housing to the first housing. Corresponding to the first engaging portion and the second engaging portion provided on the second housing, and corresponding to the first engaged portion and the second engaging portion provided on the second housing corresponding to the first engaging portion. A second engagement portion provided on the second housing, and the first housing and the second housing are connected via the engagement between the first engagement portion and the first engagement portion. And can be opened and closed.
In a housing mounting structure in which an assembled housing is formed by fixing a second engagement portion of the first housing and a second engaged portion of the second housing by fastening means, A fitting piece disposed in the first engaging portion for positioning the second housing in the three-dimensional directions with respect to the first housing in a state where the assembled housing is formed; The second housing is positioned in the three-dimensional directions with respect to the first housing by being fitted to the fitting piece provided in the first engaged portion of the housing. A fitting portion, and the fitting piece and the fitted portion are held substantially unchanged before and after the formation of the assembly housing and during the formation of the assembly housing. A housing mounting structure characterized by being as it is. 2. The housing mounting structure according to claim 1, wherein the fitting piece projects forward in a Y direction orthogonal to a mounting surface of the fitting piece in the first housing. When,
An X protruding portion connected to the Y protruding portion and protruding to the left and right in the X direction orthogonal to the Y direction, and a Z connected to the X protruding portion and orthogonal to the X direction and the Y direction. A Z tongue piece that is substantially Z-shaped when viewed from the front and protrudes forward in the Y direction after extending upward in the direction, and a left engagement member for positioning in the X direction is provided on both left and right sides of the Y protrusion. The mating surface and the right engaging surface are on the left and right sides of the X protruding portion, and the rear side has a left rear engaging surface and a right rear engaging surface for Y-direction positioning on the left and right sides of the X protruding portion. On the upper side, an upper left engaging surface and an upper right engaging surface for Z direction positioning are provided,
A front engagement surface for positioning in the Y direction is provided on the front side of the Z tongue piece extending upward in the Z direction, and a front engagement surface for Z direction positioning is provided below the Z tongue piece protruding forward in the Y direction. A lower engagement surface is formed, and the fitted portion extends over both left and right sides to be engaged with a left engagement surface and a right engagement surface of the Y protruding portion, and the Z tongue. A notch cut out across the front and rear sides to be engaged with the front engagement surface of the piece, and a left and right side extending outside the second housing and near the opening of the notch, A left projection engaged with the left engagement surface of the Y protruding piece below the pair of projections inside the opening of the notch; An engagement surface and a right engaged surface engaged with the right engagement surface are engaged with the left rear engagement surface of the X protruding piece on the front side of the pair of projections. A rear engaged surface and a right rear engaged surface engaged with the right rear engaging surface are inside the notch and have a front end on the front engaging surface of the Z tongue piece. The front engaged surface to be fitted is outside the second housing and between the left rear engaged surface and the front engaged surface is the upper left engaging surface of the X protruding piece portion. The lower left engaged surface to be engaged is outside the second housing, and the X is between the right rear engaged surface and the front engaged surface.
The lower right engaged surface engaged with the upper right engaging surface of the projecting piece portion,
An upper engaged surface to be engaged with the lower engaging surface of the Z tongue portion is formed inside the second housing and in front of the front engaged surface. Housing mounting structure. 3. The housing mounting structure according to claim 1, wherein the fitting piece projects forward in a Y direction orthogonal to a mounting surface of the fitting piece in the first housing. When,
X having a left projecting piece and a right projecting piece connected to the Y protruding portion and protruding leftward and rightward in the X direction orthogonal to the Y direction and extending upward in the Z direction orthogonal to the Y direction and the X direction. A protruding piece portion, a Z tongue piece portion which is connected to the X protruding piece portion, extends upward in the Z direction, then protrudes forward in the Y direction, and has a substantially Z-shape in front view; An upper engaging surface for positioning in the Z direction is provided on the upper side of the protruding piece, a left engaging surface for positioning in the X direction is provided on the left side of the left protruding piece, and an The right engagement surface has a left rear engagement surface for Y-direction positioning on the rear side of the left projection, and the right rear engagement surface for Y-direction positioning on the rear side of the right projection. A front engagement surface for Y-direction positioning is provided on the front side of the Z tongue piece extending upward in the direction, and a Z-direction position is provided below the Z tongue piece protruding forward in the Y direction. Lower engagement surfaces for determination are respectively formed, and the fitted portion is formed to be recessed outside the second housing so as to be engaged with the upper engagement surface of the Y protruding piece portion. A step,
The left rear engaging surface of the X protruding portion, the right rear engaging surface of the X protruding portion, and the right A notch hole cut out on both front and rear sides in the Y direction so as to be engaged with a rear engagement surface and a front engagement surface of the Z tongue piece portion, and the upper engaging portion is provided outside the step portion. A lower engaged surface engaged with the mating surface has a left engaged surface and a right engaged surface engaged with the left engaging surface of the X protruding piece on both left and right sides of the cutout hole. The right engaged surface to be engaged has the X
A rear engagement surface engaged with the left rear engagement surface and the right rear engagement surface of the protruding piece portion has the Z
The front engaged surface engaged with the front engagement surface of the tongue piece is the second engaged surface.
An upper engaged surface that is engaged with the lower engaging surface of the Z tongue piece is formed inside the housing and in front of the front engaged surface. Body mounting structure. 4. The housing mounting structure according to claim 1, wherein the fitting piece projects toward a front side in a Y direction orthogonal to a mounting surface of the fitting piece in the first housing. A second Y protruding portion formed in the first Y protruding portion and extending upward in the Z direction orthogonal to the Y direction; and a Z protruding forward in the Y direction connected to the first Y protruding portion. A Z tongue piece that is substantially Z-shaped in front view and that protrudes forward in the Y direction after extending upward in the direction, and an upper engagement for positioning in the Z direction is provided above the first Y protrusion. The front surface of the second tongue piece has a rear engagement surface for positioning in the Y direction, and the front surface of the Z tongue portion extending upward has a front engagement surface for positioning in the Y direction. Z near the engagement surface
X on the left and right sides of the tongue in the X direction orthogonal to the Y direction.
A left engaging surface and a right engaging surface for directional positioning, and a lower engaging surface for Z direction positioning are formed below the Z tongue piece protruding forward, respectively. , The rear engagement surface of the second Y projection and the Z
To engage with the front engagement surface of the tongue piece, extend across the front and rear sides in the Y direction, and engage with the left engagement surface and the right engagement surface of the Z tongue portion. A notch hole cut out on both left and right sides in the X direction, and a connecting portion formed on the rear side of the notch hole in the Y direction so as to be engaged with the upper engagement surface of the first Y projection. A lower engaged surface to be engaged with the upper engaging surface of the first Y protruding piece portion on the lower side of the connecting portion, and the X protruding portion portion on the rear side of the notch hole. A front engaged surface engaged with the rear engaging surface has a front engaged surface engaged with the front engaging surface of the Z tongue piece on the front side of the notch hole. A left engaged surface engaged with the left engaging surface and a right engaged surface engaged with the right engaging surface of the Z tongue piece are provided on both left and right sides inside the second housing. And the front side of the front engaged surface has the Z A housing mounting structure, wherein upper to-be-engaged surfaces to be engaged with the lower engagement surface of the tongue piece are respectively formed. 5. The housing mounting structure according to claim 1, wherein said fitting piece is provided separately from said first housing. Body mounting structure. 6. The housing mounting structure according to claim 1, wherein at least a second housing of the first housing, the fitting piece, and the second housing is made of synthetic resin. A housing mounting structure characterized by being molded with. 7. The housing mounting structure according to claim 1, wherein the fitting piece and the fitted portion are subjected to a predetermined range of mechanical stress on the assembled housing. A housing mounting structure, wherein the housing mounting structure is configured to maintain the assembled housing when applied from each of three-dimensional directions.