JPH09126211A - Box body fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen the fitting of the box body of a car audio. SOLUTION: This box body fitting structure is such that a main body 1 whose front and top surfaces are opened, is equipped with a front surface part 2 arranged in the front thereof, and an upper cover 3 arranged on the top surface thereof. In this case, fitting claws 3D are formed on the upper cover 3 so as to be directed in the same direction as the side surface of the main body 1 by being opposed to the left/right side surfaces of the main body 1 in the vicinity of the front surface part 2, and fitting holes 1C are arranged on the left/right side surfaces of the main body 1 so that the fitting claws 3D can be fitted thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting structure for a car audio housing, and more particularly to a fitting structure capable of strengthening fitting.

[0002]

2. Description of the Related Art FIG. 11 is a view for explaining a conventional car audio housing fitting structure. The same components are denoted by the same reference numerals or symbols throughout the drawings.
As shown in the figure, the car audio housing is formed of a single piece surrounded by upright plates on the rear and left and right sides, and the top and front surfaces are open, and the main body contains electronic components. 1 and a front part 2 attached to an open front surface of the main body 1, having a switch button and a display part, and processing a signal from the switch button and incorporating a circuit board for processing a display signal; It comprises an upper lid 3 attached to the open top surface of the main body 1.

The main body 1 has a plurality of claws 1A for fitting and fixing the front surface portion 2 on the left and right side surfaces and the front side of the lower surface, and the side surface of the upper lid 3 when the upper lid 3 is put on the top surface of the main body 1. An edge portion 1B in which the plates on the left and right side surfaces and the rear side surface of the main body are displaced inward at the upper part so that the upright side surface of the main body 1 is flush
And The front surface portion 2 is located on the left and right side surfaces and the lower surface, and has a plurality of fitting hole portions 2A into which a plurality of claw portions 1A of the main body 1 are fitted, and two brim portions on which the upper lid 3 is placed for sandwiching and fixing the upper lid 3. 2B and.

The upper lid 3 is located between the right side surface 3A and the two pinching portions 3B for fixing the edge portion 1B of the main body 1 on each of the left and right side surfaces 3A, and the two brim portions 2B of the front surface portion 2. However, it has a brim portion 3C for entering under the upper surface of the front surface portion 2 and biasing the upper surface. By this bias, the chattering noise generated between the top cover 3 and the main body 1 due to the vibration of the top cover 3 when the vehicle floats is prevented.

FIG. 12 is a view for explaining the sandwiching portion 3B of the upper lid 3 of FIG. As shown in this figure (a), the pinching portion 3B
Includes a protrusion 3B1 for generating a force for sandwiching the edge 1B.
And a guide portion 3B2 for guiding the sandwiching portion 3B inside the main body 1.
And a hole 3B3 for adjusting the bending of the sandwiching portion 3B. As shown in this figure (b), the sandwiching portion 3B is provided with the edge portion 1B.
Sandwich.

In assembling the housing, first, the plurality of claw portions 1A of the main body 1 are replaced with the plurality of fitting hole portions 2A of the front surface portion 2.
After that, the collar portion 3C of the upper lid 3 is pushed between the two collar portions 2B of the front surface portion 2 and the upper lid 3 is pushed from above to press the edge portion 1B of the main body 1 between the left and right side surfaces 3A and the sandwiching portion 3B.
In between. By the way, in the structure of the housing, the sandwiching portion 3
The position B is located at a distance L from the front side. This is because the collar portion 3C of the upper lid 3 is replaced by the two collar portions 2 of the front surface portion 2.
Push in between B and push upper lid 3 from above to
When the edge portion 1A of the main body 1 is sandwiched between A and the sandwiching portion 3B, if the distance L is small, it is necessary to push strongly by the lever principle. There is a problem that a strong impact gives a strong impact to the housing and the workability is deteriorated by pushing it strongly. For this reason, this distance L is made larger than a certain value.

[0007]

By the way, when the main body 1 is in the front open state, the left and right upright side surfaces of the main body 1 are not necessarily vertical in manufacturing, and may tilt inward or outward. When leaning outward, the main body does not lean outward when fitted to the front surface portion 2. However, in the case of inclining inward, it is the pinch portion 3B that gives the force for returning this inclination.
However, since the distance between the sandwiching portion 3B and the claw portion 1A is large, this returning force is small, and therefore the inward inclination cannot be returned, and the operator applies a force to the outside with respect to this inward inclination. Therefore, it is necessary to fit the claw portion 1A into the fitting hole portion 2A.
Therefore, there is a problem that the working process becomes complicated. Further, even if the inward inclination is not so large, when the left and right side surfaces of the main body 1 are strongly sandwiched when the housing is attached to the vehicle, the claw portion 1A of the main body 1 causes the fitting hole portion 2 of the front surface portion 2 to be held.
When a force is applied to the front surface 2 away from A and away from the main body 1, the front surface 2 is separated.

The case where the main body 1 is fitted inside the front surface portion 2 has been described above, but the same applies to the case where the main body 1 is fitted outside the front surface portion 2.
Does not incline inward, but when the main body inclines outward, there is a problem similar to the above. Therefore, in view of the above problems, it is an object of the present invention to provide a housing fitting structure that facilitates the work when assembling the housing and that does not easily separate the front surface from the main body when the housing is mounted on a vehicle. And

[0009]

In order to solve the above problems, the present invention provides a housing fitting structure having the following construction. That is, in a case-fitting structure having a front-opening and top-opening main body, a front surface part in front of the main body, and an upper lid on the top surface of the main body, on the left and right side surfaces of the main body near the front surface part. Fitting claws formed on the upper lid so as to face each other and face in the same direction as the side surfaces, and fitting hole portions for fitting the fitting claws to the left and right side surfaces of the main body are provided. . With this fitting structure, even if a force is applied to the left and right side surfaces of the main body, no bending occurs inside, so that the front portion can be prevented from coming off. Further, a force in the direction of detaching from the main body acts on the front surface portion, so that the front portion is not easily detached.

The left and right side surfaces of the main body are inclined in the same direction as the inclination of the fitting claw, and the fitting hole portion is enlarged by an amount corresponding to the inclination of the fitting claw to perform fitting. You may invite. By this means, it is not necessary to correct the inclination of the left and right side surfaces of the main body, and workability is improved. The fitting claw may be formed in the main body, and the fitting hole portion may be formed in the upper lid. This fitting structure increases the degree of freedom in manufacturing.

The front portion and the upper lid have a collar portion for applying a biasing force, and the fitting claw is L-shaped to apply the bias to the fitting hole by the L-shaped fitting claw. You may do it. By this means, when the bias due to the front face portion and the upper lid is structurally insufficient, it becomes possible to supplement this lack. A protrusion may be provided on the fitting claw, and the protrusion may be brought into contact with a shield plate that shields static electricity from the outside of the front surface portion. By this means, it is possible to simplify the earth connection structure.

A protrusion may be provided around the hole of the fitting hole, and the protrusion may be brought into contact with a shield plate that shields static electricity from the outside of the front portion. This measure increases the degree of freedom in manufacturing.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a housing fitting structure according to the present invention. As shown in the figure, the main body 1 is further provided with a fitting hole portion 1C which is formed by making fitting holes in the front and left portions of the edge portion 1B and horizontally bending the bottom surface thereof.

The upper lid 3 is provided with fitting claws 3D fitted in the fitting holes 1C on the front sides of the left and right side surfaces 3A, respectively. FIG. 2 is a diagram illustrating the fitting hole portion 1C and the fitting claw 3D of FIG. As shown in this figure, the fitting claw 3D is fitted in the fitting hole 2C as indicated by the dotted line. FIG. 3 is a sectional view for explaining fitting of the fitting claw 3D into the fitting hole 1C. As shown in this figure, when the upper lid 3 is inserted so that the collar portion 3C is also slipped into the front surface portion 2, a rotational movement is performed so that the rear portion of the upper lid 3 is fitted with the rear portion of the main body 1 with the insertion position as a fulcrum. Be seen. During this rotational movement, the fitting claw 3D fits into the fitting hole 1.

In this way, the left and right side surfaces of the main body 1 do not incline inward even when the main body 1 is strongly held,
When the housing is attached to the vehicle, the claw portion 1A of the main body 1 does not come off from the fitting hole portion 2A of the front face portion 2, and therefore the front face portion 2 does not come off from the main body 1. FIG. 4 is a diagram for explaining the fitting of the fitting claw 3D into the fitting hole 1C when the right and left side surfaces of the main body 1 are tilted inward.
As shown in the figure, the fitting claw 3D is provided with an inclination such that its tip end faces inward in consideration of the inclination of the left and right side surfaces of the main body 1. The hole of the fitting hole 1C is shaped so that the tip of the fitting claw 3D of the upper lid 3 is inserted when the upper lid 3 is attached to the main body 1.

In this way, even if the left and right side surfaces of the main body 1 are tilted inward and the front surface 2 is not fitted, the fitting claw 3D is formed.
With the fitting hole 1C, the left and right side surfaces of the main body 1 are covered with the upper lid 3
When the mating is completed, the main body 1
The left and right side surfaces of the will return the inclination to the upright position at the base of the fitting claw 3D. The fitting between the front part 2 and the main body, which have once been removed, is reproduced. Therefore, while fitting the upper lid 3, it is not necessary to apply force to the left and right side surfaces of the tilted main body to the outside, and the work is simplified.

FIG. 5 is a view showing another modified fitting structure of the housing according to the present invention, which is a modification of the example of FIG. This figure (a),
As shown in (b), the relationship between the fitting claw and the fitting hole in FIG. 1 is reversed. That is, the two fitting claws 1D are provided on the front left and right side surfaces of the main body 1, and the fitting holes 3E are provided on the upper lid 3 above the left and right side surfaces 3A corresponding to the fitting claws 1D. To be Even in this case, it is possible to obtain the same effect as the above.

FIG. 6 is a diagram showing another modified structure of the case according to the present invention, which is a modification of the example of FIG. This figure (a)
As shown in, the width W of the flange portion 3F of the upper lid 3 may not be larger than the width W of the flange portion 3C of FIG. In this case, sufficient bias cannot be removed, and the upper lid 3 floats, causing chatter noise. Therefore, like the fitting claw 3G, the tip of the fitting claw 3D in FIG. 1 is extended forward to form an L-shape. As shown in this figure (b), it is fitted into the fitting hole 1C, and as shown in this figure (c), the fitting claw 3G is fitted into the fitting hole 1C.
It is fitted into C to generate a bias force. Therefore, even if the width W of the flange portion 3F of the upper lid 3 is small, the fitting claw 3
Due to G, the upper lid 3 can be prevented from floating and the generation of chattering noise can be prevented.

FIG. 7 is a view showing another modified fitting structure of the case according to the present invention, which is a modification of the example of FIG. As shown in FIGS. 6A and 6B, the relationship between the fitting claw and the fitting hole in FIG. 6 is reversed. That is, in the upper part of the left and right side surfaces in front of the main body 1, there is a 2
Two fitting claws 1E are provided, and the fitting holes 3 are provided in the upper portion of the front left and right side surfaces 3A corresponding to the respective fitting claws 1E.
E is provided. Even in this case, it is possible to obtain the same effect as the above.

Next, the use of the fitting structure of the present invention will be described. As described above, the front surface portion 2 has a switch button and a display portion and incorporates a circuit board that processes a signal from the switch button and that processes a display signal. These switch buttons and the display section are attached to the surface of the front section 2, but during use, a high voltage may fly to the circuit board due to static electricity from the gap between them. Since this static electricity causes failure of the elements on the circuit board, a shield plate is provided in the gap between them and grounded to prevent the static electricity from affecting the circuit board. Since the grounding of the shield plate is performed in the main body 1, the ground wire guides from the shield plate to the main body 1. Therefore, the ground wire complicates the structure of the circuit. In order to simplify the circuit structure, the conventional wiring of the ground wire is eliminated by utilizing the fitting structure of the present invention as follows.

FIG. 8 is a diagram showing an example in which the fitting structure of the housing of FIG. 6 is used for grounding the shield plate. As shown in this figure (a), in the case of the case fitting structure of FIG. 6, as shown in this figure (b), the fitting claw 3H is the tip of the L-shaped fitting claw 3G. Is provided with a protrusion. As shown in this figure (b), the shield plate 2C is made of a conductive material, and its end portion 2C1 has elasticity. As shown in this figure (c),
When the housing is completely assembled, the protrusion of the fitting claw 3G contacts the end 2C1 of the shield plate 2C, and the shield plate 2C is grounded. Then, the grounding is maintained by the elasticity of the end portion 2C1.

FIG. 9 is a diagram showing an example in which the fitting structure of the housing shown in FIG. 5 is used for grounding the shield plate. As shown in this figure, the fitting hole portion 3I of the upper lid 3 has a shape around the hole projected as compared with the fitting hole portion 3D of FIG. 5, and this projection is provided at the end portion 2C1 of the shield plate 2C. It is aimed at. In this way, the same effect as the above can be obtained.

FIG. 10 is a view showing an example in which the fitting structure of the housing shown in FIG. 1 is used for grounding the shield plate. As shown in this figure, the fitting portion 1F of the main body 1 has a shape around the hole projected as compared with the fitting hole portion 1C of FIGS. It is aimed at 2C1. In this way, the same effect as the above can be obtained.

In the above description, the case where the main body 1 is fitted inside the front face portion 2 has been described, but the same applies to the case where the main body 1 is fitted outside the front face portion 2 and the case where the main body tilts outward. Also, it can be solved in the same manner as described above.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a housing fitting structure according to the present invention.

FIG. 2 is a diagram illustrating a fitting hole portion 1C and a fitting claw 3D of FIG.

FIG. 3 is a cross-sectional view illustrating fitting of a fitting claw 3D into a fitting hole 1C.

FIG. 4 is a diagram illustrating fitting of the fitting claw 3D into the fitting hole portion 1C when the left and right side surfaces of the main body 1 are inclined inward.

FIG. 5 is another fitting structure of the housing according to the present invention.
It is a figure which shows the modification of the example of.

FIG. 6 is a view showing another modified structure of the housing according to the present invention, which is a modified example of the example of FIG.

FIG. 7 is a view showing another modified structure of the housing according to the present invention, which is a modification of the example of FIG.

8 is a diagram showing an example in which the fitting structure of the housing of FIG. 6 is used for grounding a shield plate.

9 is a diagram showing an example in which the fitting structure of the housing of FIG. 5 is used for grounding a shield plate.

10 is a diagram showing an example in which the fitting structure of the housing of FIG. 1 is used for grounding a shield plate.

FIG. 11 is a diagram illustrating a fitting structure of a conventional car audio housing.

12 is a diagram illustrating a sandwiching portion 3B of the upper lid 3 of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Front part 3 ... Upper lid 1C, 1E, 3E, 3I ... Fitting hole part 1D, 3D, 3E, 3G, 3H ... Fitting claw 2B, 3C, 3F ... Collar part 2C ... Shield plate

Claims (6)

[Claims] 1. A fitting structure for a housing having a front-opening and top-opening main body, a front surface portion in front of the main body, and an upper lid on the top surface of the main body, wherein the main body is close to the front surface portion. Fitting claws formed on the upper lid so as to face the left and right side surfaces and face in the same direction as the side surfaces, and fitting hole portions for fitting the fitting claws on the left and right side surfaces of the main body, respectively. A fitting structure for a housing, comprising: 2. The fitting claw is tilted in the same direction as the left and right sides of the main body, and the fitting hole is formed by enlarging the hole by an amount corresponding to the tilt of the fitting claw. The fitting structure for a housing according to claim 1, wherein the fitting structure invites a match. 3. The fitting structure for a housing according to claim 1, wherein the fitting claw is formed in the main body, and the fitting hole is formed in the upper lid. 4. The front part and the upper lid have a collar part for applying a biasing force, and the fitting claw is L-shaped with respect to the fitting hole by the L-shaped fitting claw. The housing fitting structure according to claim 1, wherein a bias is applied. 5. The housing according to claim 1, wherein the fitting claw is provided with a protrusion, and the protrusion is brought into contact with a shield plate that shields static electricity from the outside of the front surface portion. Mating structure. 6. A protrusion is provided around the hole of the fitting hole portion,
The housing fitting structure according to claim 1 or 3, wherein the protrusion is in contact with a shield plate that shields static electricity from the outside of the front portion.