JPH03224295A - Assembling structure for modem housing - Google Patents

Abstract

PURPOSE:To mold component members, to freely form the shape of a housing, to reduce its weight, to simplify a surface finishing step and to enhance assembling properties by holding a base plate by the pressing forces of lower and upper covers at a plurality of holding points. CONSTITUTION:A lower cover 20 for containing a base plate 21, an upper core 22 covering the upper surface of the cover 20, a front panel 23 covering the front surface, and a rear panel 24 covering the rear surface are provided. These members are coupled fixedly to each other. A plurality of holding seats 25a, 25b for holding the plate 21 and grooves 26, 27 to which the panels 23, 24 are fitted are provided at the cover 20, holes 29 are formed corresponding to the seats 25a, 25b at the plate 21, protruding ribs 30a, 30b corresponding to the holes 29 are provided on the cover, grooves 31, 32 to be engaged with the panels 23, 24 are formed, and the seats 25a, 25b, the holes 29, and the ribs 30a, 30b are simultaneously secured by a screw 33. As a result, the plate 21 is held by the pressing forces of the covers 20, 21 at a plurality of holding points to obtain a plurality of reinforcing points.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an assembly structure of a box-shaped modem housing with a built-in board.

[Prior Art] A modem housing in a communication device, such as a data terminal of a car phone, is usually box-shaped, and a board is housed within the box-shaped housing.

Such a modem housing consists of a lower cover that houses the board, an upper cover that covers the upper surface of the lower cover, a front panel that covers the front, and a rear panel that covers the back, and these components are connected and fixed to each other. .

FIG. 3 is an exploded perspective view showing a conventional example of the assembly structure of this type of modem housing.

In the figure, the lower cover 3 housing the substrate 2 is an upper cover that covers the upper surface of the lower cover 1.

4 is a front panel that covers the front side of the lower cover 1, and 5 is a rear panel that covers the back side of the lower cover 1.

Reference numeral 6 denotes a bracket welded to both sides of the lower cover 1, which also serves as reinforcement, and the bracket 6 has a rail-shaped hook groove 7.

Reference numeral 8 denotes Z metal fittings welded to both sides of the upper cover 3, and the Z metal fittings 8 are arranged at positions where the hooks of the lower cover 1 are fitted into the grooves 7.

Reference numeral 9 denotes a Z metal fitting with an M3 tap welded to the center of the rear end of the upper cover 3, and the JZ metal fitting 9 and the Z metal fitting 8 are connected to fitting pieces 8a, 9a in parallel to the mounting sliding direction of the upper cover 3.
It is placed facing the direction.

10 is a bent surface provided above and below the front panel 4;
The bent surface 10 serves both as a reinforcement for the upper cover 3 and the lower cover 1 and as a spacer.

Similarly, reference numeral 11 indicates bent surfaces provided on the upper and lower sides of the rear panel 5, and the bent surfaces 11 also serve as reinforcement for the upper cover 3 and lower cover 1 and as spacers.

Brackets 12 are welded to the left and right sides of the front panel 4, and the brackets 12 have taps for fixing the left and right corners of the front end of the board 2 with screws.

Similarly, reference numeral 13 denotes brackets welded to the left and right sides of the rear panel 5, and the brackets 13 have taps for fixing the left and right corners of the rear end of the board 2 with screws.

Reference numeral 14 denotes an M3 thin neck screw that is attached to the rear panel 5 from the front side, and the thin neck screw 1'4 is attached to the Z of the upper cover 3.
It is arranged at the screwing position with the M3 tap of the metal fitting 9.

Hereinafter, the operation of the conventional example having the above configuration will be explained.

First, connect the front and rear panels of the board 2 to the front panel 4 and rear panel 5.
Fix the screws to the taps on bracket 12 and 13.

As a result, the board 2 is assembled and fixed, and at the same time, the front panel 4 and the rear panel 5 are connected and fixed.

When the front panel 4 and rear panel 5, which are connected and fixed by the substrate 2 in this manner, are placed at a predetermined position with respect to the lower cover 1, the substrate 2 is placed at a predetermined position within the lower cover 1.

Next, lower cover 1. Most of the box whose bottom and sides are formed by the front panel 4 and rear panel 5,
Cover the upper cover 3 by sliding it in the direction of arrow A.
The groove 7 of the Z metal fitting 8 and the hook fit together to connect the upper cover 3 and the lower cover 1, and the Z metal fitting 9 and the bent surface 11 of the rear panel 5 fit to connect the upper cover 3 and the rear panel 5. .

Here, since the rear panel 5 is connected and fixed to the front panel 4 by the substrate 2, the upper cover 3 is also connected and fixed to the front panel 4.

Finally, the thin neck screw 14 is screwed into the M3 tap of the Z metal fitting 9 and tightened to fix the position of the upper cover 3 and the connected state.

With the above steps, the assembly of the modem housing 15 containing the atrFi2 is completed as shown in FIG.

[Problem to be solved by the invention]

However, according to the conventional technology having the above-mentioned configuration, since the substrate holding means and the connecting means between the constituent members are fixed to each constituent member by welding, preliminary processing of the constituent members is required, resulting in an increase in cost. there were.

In addition, each component is made of sheet metal to maintain strength, but this does not allow for freedom in shape.

I wonder if there is a problem such as it takes a lot of time to finish the two surfaces that have heavy deposits.

Furthermore, since the rigid bodies are assembled together, the constituent members repel each other and do not fit together, and there is a problem in that assembly of the slide section in particular becomes a bottleneck, and a gap is noticeable at the joint between the upper and lower covers upon completion.

In view of the above-mentioned problems, the present invention provides a structure having a plurality of reinforcing points, and enables each component to be formed by molding, thereby providing freedom in the shape of the housing, reducing weight, 1 simplifying the surface finishing process, 1
The purpose is to improve assembly efficiency.

Furthermore, the structure is simplified by obtaining a structure in which the plurality of reinforcing points and the holding means for the substrate are also used.

Furthermore, an objective of the present invention is to obtain a structure in which each component member is provided with a substrate holding means and a connection means between the members in advance, thereby eliminating preliminary processing of the component members and realizing cost reduction. .

[Means to solve the problem]

In order to achieve the above object, the present invention holds the substrate at a plurality of holding points by the pressing force of the lower cover and the upper cover.

Furthermore, each component is formed by molding, and the means for holding the substrate and the means for connecting each component are integrally formed at the molding stage.

That is, the present invention provides a modem housing comprising, as constituent members, an upper cover that covers the upper surface of a lower cover that houses a board, a front panel that covers the front surface, and a rear panel that covers the back surface, and these constituent members are connected and fixed to each other. In the assembly structure, the lower cover, the upper cover, the front panel, and the rear panel are molded with an elastic resin material, and the lower cover is fitted with a plurality of holding seats for holding the board, and the front panel and the rear panel. A fitting groove is provided to match the
The board is provided with mounting holes corresponding to the plurality of holding seats, the upper cover is formed with protruding ribs corresponding to the plurality of mounting holes, and a front panel and a rear panel are fitted together. Provide a groove, said retaining seat, and a mounting hole by a screw.

Fix the ribs all at once.

(Function) With the above configuration, the present invention first aligns the mounting hole of the board with the holding seat of the lower cover to position the board with respect to the lower cover, and then connects the front panel and the retainer panel with the lower cover. Fit it into the groove.

Here - Align the ribs on the top cover and the mounting holes on the board T&
and fit the front panel and carrier panel into the fitting grooves of the upper cover, and cover the upper cover.

And finally the said retaining seat and mounting hole by screw.

When the ribs are fixed all at once, they become the connection point for the upper and lower covers, the holding point for the board, and the reinforcing point for the casing, allowing the installation of the board and the connection, fixation, and reinforcement between each component to be performed at the same time.

〔Example〕

Examples will be described below according to the drawings.

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing the completed state of the same embodiment.

In the figure, a lower cover 22 housing the substrate 21 is an upper cover 20 that covers the upper surface of the lower cover 20. As shown in FIG.

23 is a front panel that covers the front surface of the lower cover 20; 24;
is a rear panel that covers the back of the lower cover 20; Upper cover 22. The front panel 23 and the rear panel 24 are made of an elastic resin material.

25a and 25b are substrates 21 provided on the lower cover 20;
The holding seats 25a are round and the holding seats 25b are columnar. 26
2 is a fitting groove for the front panel provided on the lower cover 20;
7 is a fitting groove for the rear panel, 28 is a reinforcing wall provided on the lower cover 20, and the reinforcing wall 28. The holding seat 25a and the holding seat 25b.

The fitting groove 26 and the fitting groove 27 are all molded integrally with the lower cover 20.

Reference numerals 29 denote four holes provided on the substrate 21, and the mounting holes 29 correspond to the holding seats 25a of the lower cover 20.

30a and 30b are ribs protruding from the upper cover 22, of which the rib 30a has a round shape and corresponds to the holding seat 25a of the lower cover 20, and the rib 30b has a columnar shape and serves to hold the lower cover 20. It corresponds to seat 25b. 3
1 is a fitting groove for the front panel provided in the upper cover 23;
32 is a fitting groove for the rear panel. 33 is a prime screw corresponding to all the round ribs 30a, and the prime screw 3
3, the holding seat 25a, mounting hole 29 rib 30a
Fixed all at once. 34 is a reinforcing wall provided on the upper cover 22, and the reinforcing wall 34. The lip 30a, the rib 30b, and the fitting groove 32 are all integrally molded to the upper cover 22.

The operation of this embodiment having the above configuration will be explained below.

First, the prime screw 33 is passed through the holding seat 25a from the bottom surface of the lower cover 20 in advance.

Next, the mounting hole 29 of the board 21 and the holding seat 25a of the lower cover 20 are aligned, and the board 21 is positioned relative to the lower cover 20.

Next, insert the front panel 23 into the fitting groove 26 of the lower cover 20.
First, fit the rear panel 24 into the fitting groove 27 of the lower cover 20.

Here, the rib 30a of the upper cover 22 and the attacher 29 of the board 21 positioned on the lower cover 20 are aligned, and the front panel 23 is fitted into the fitting groove 31 of the upper cover 22.
The rear panel 24 is aligned with the fitting groove 32 of the upper cover 22, and the upper cover 22 is placed over the lower cover 20.

As described above, the upper cover 22 and the lower cover 20 maintain the necessary space due to the mutual contact between the reinforcing walls 2B and 34 and the heights of the front panel 23 and the rear panel 24.

In this state, the holding seats 25a, the mounting holes 29. The lip 30a is fixed all at once.

The rib 30b and the holding seat 25b are attached to the substrate 2 due to the elasticity of the resin material.
Press 1 with the surface.

As a result of the above, the upper cover 22 and the lower cover 20 are connected, and the group Fi21 is held.

In this way, the assembly of the modem housing 35 containing the board 21 is completed as shown in FIG.

At this time, the holding seats 25a are on the same central axis.

Installer 29. The ribs 30a serve as spacers to increase the strength of the housing against longitudinal forces.

Therefore, sufficient strength can be obtained even if each component is formed by molding.

Note that if each component is faced with a mold and textured, the molded product produced by stamping will have an appearance similar to the surface of a sheet metal.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the constituent members are a lower cover that houses a board, an upper cover that covers the upper surface of the lower cover, a front panel that covers the front surface, and a rear panel that covers the back surface. In the assembly structure of modem casings that are connected and fixed to each other, the lower cover is provided with fitting grooves for fitting the plurality of holding seats for holding the board, the front panel and the rear panel, and the plurality of holding seats for holding the board are provided in the bottom cover, Mounting holes are provided corresponding to the holding seats, ribs are formed protruding in the upper cover corresponding to the plurality of mounting holes, and fitting grooves are provided in which the front panel and the rear panel are fitted, and the holding seats are secured by screws. Since the seat, mounting holes, and ribs are fixed all at once, the board can be held at multiple holding points by the pressing force of the lower cover and the upper cover.

As a result, each component can be molded as it has multiple reinforcement points, which has the following effects: freedom in the shape of the housing, reduction in weight, simplification of the surface finishing process, and improvement in assembly. be.

Further, since the plurality of reinforcing points and the means for holding the substrate are also used, there is an effect that the structure is simplified.

Further, according to the present invention, since each component is formed by molding, the means for holding the substrate and the means for connecting each component can be integrally formed at the molding stage.

As a result, each component can be provided with a substrate holding means and a connection means between the members in advance, which has the effect of eliminating preliminary processing of the components and realizing cost reduction.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is a perspective view showing the completed state of the same embodiment, and FIG. 3 is an exploded perspective view showing a conventional example. 20... Lower cover 21... Board 22... Upper cover 23... Front panel 24... Rear panel 25a, 26b... Holding seat 26.27... Fitting groove 29... Installation Holes 30a, 30b...Rib 3132...Fitting groove 33...Prime screw

Claims (1)

[Claims] 1. A modem housing assembly structure in which the constituent members are a lower cover that houses a board, an upper cover that covers the upper surface of the lower cover, a front panel that covers the front side, and a rear panel that covers the back side, and these constituent members are connected and fixed to each other, The lower cover, the upper cover, the front panel, and the rear panel are molded with an elastic resin material, and the lower cover is provided with fitting grooves for fitting the front panel and the rear panel with a plurality of holding seats for holding the board. , mounting holes are provided in the substrate corresponding to the plurality of holding seats, and ribs are formed in the upper cover to protrude corresponding to the plurality of mounting holes, and fittings for fitting the front panel and the rear panel are formed. An assembly structure for a modem housing, characterized in that a matching groove is provided, and the holding seat, mounting hole, and rib are all fixed together with a screw.