JP3341232B2 - Fixing structure between molding members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure between two molded members suitable for fixing between two molded members by a snap-in method.

[0002]

2. Description of the Related Art FIGS. 4A and 4B are schematic perspective views showing an example of a video deck. As shown in the figure, this type of video deck 80 includes an operation panel 85 in addition to an insertion hole 81 for inserting a video tape on a front surface thereof, a display section 83 for various functions.

The operation panel 85 shown in this example is normally closed as shown in FIG. 1A, and is pulled down to the front side as shown in FIG. The inner operation surface 87 is opened, and various key tops and the like on the operation surface 87 can be operated.

FIG. 5 is a side view of the operation panel 85 (the operation surface 87 is directed downward). As shown in the figure, the operation panel 85 has two cases 89, 91.
Various electronic components are housed between them.

The operation panel 85 includes a main body 93 provided with an operation surface 87 and a projection 97 projecting from the main body 93 via a bent portion 95. Accordingly, the two cases 89 and 91 are both bent.

[0006]

In the case where the two cases 89 and 91 are fixed to each other, the main body 93 has a large thickness, and can be fixed by, for example, a bolt. Because it is thin, it cannot be fixed by bolts.

In particular, in the case of the operation panel 85, the main body 9
Since a name plate (not shown) is attached to the operation surface 87 provided in 3, the head of the bolt used for fixing can be hidden. However, since the name plate is not attached to the protruding portion 97, it was fixed with a bolt. You can't even hide your head.

On the other hand, cases 89 and 91 in the projecting portion 97
There is also a method of fixing the gap between the cases by engaging locking claws of a snap-in structure provided on both cases 89 and 91, respectively.

However, in the case of this method, as shown in FIG. 6, the projecting direction of the locking claw 99 provided on the case 89 is perpendicular to the surface of the case 89. This is the case 91
The same applies to the locking claws provided on the side. Therefore, the height of the locking claw 99 is high, and the thickness of the protrusion 97 cannot be reduced.
After all, there was a problem that the thickness could not be reduced.

Particularly, in the case of the operation panel 85, the case 8
9 is bent at the bent portion 95, the pulling-out direction of the molding die when the case 89 is integrally formed is the same as that of the body portion 93 having a complicated structure as shown by an arrow E in FIG. In this case, the direction is vertical, but the pulling direction is different from the projecting direction of the locking claw 99. The locking claw 99
The protruding direction of the claw 101 at the tip is also different from the pulling direction.

For this reason, in order to provide the locking claws 99, a slide core having a complicated structure must be separately provided in the molding die, and there is a problem that the die structure is considerably complicated. .

The present invention has been made in view of the above points, and an object thereof is to provide a fixing structure between molded members which is suitable for thinning, can be securely fixed by a snap-in method, and is easily manufactured by molding. Is to do.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a fixing structure between molding members for fixing the first and second molding members by a snap-in structure. The surface is provided with two projections projecting in parallel so as to be inclined with respect to the surface.
Small projections are provided on the side wall of one of the two projections provided on the member, the projections projecting in a direction substantially perpendicular to the projection direction of the projection.
The surface of the second molding member is provided with a projection that projects obliquely to the surface and a small projection that projects in a direction substantially perpendicular to the projection direction of the projection. Provided 2
The projections provided on the second molding member are inserted between the projections, and the small projections respectively provided on the first and second molding members are engaged with each other, thereby forming the first and second molding members. It was configured to fix the gap between them.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic side sectional view showing one embodiment of an operation panel using the present invention. As shown in the figure, the operation panel 1 is configured such that a flexible switch substrate 70 and a base 75 are housed between two upper and lower cases 10, 40, and the two cases 10, 40 are fixed. Have been.

The operation panel 1 has a main body 3 provided with an operation surface 5 and a projection 7 projecting from the main body 3 through a bent portion 9. Hereinafter, each component will be described.

FIG. 2 is an exploded perspective view of a main part showing a part of the operation panel 1. As shown in FIG. As shown in FIGS. 1 and 2, the case 40 is made of a synthetic resin and includes a key top forming surface 41 that is a part of the main body 3 and a locking surface 43 that is the protruding portion 7. Is integrally formed in a state where the surface is bent at an angle of about 45 °.

As shown in FIG. 1, various key tops such as a seesaw type key top 45 are formed integrally with the case 40 in the key top forming surface 41.

On the other hand, as shown in FIG. 2, rail-shaped projections 45 are provided on the locking surface 43 linearly at predetermined intervals. As shown in FIG. 1, the rail-shaped projection 45 is inclined at an angle of about 45 ° with respect to the surface of the locking surface 43 and projects at an angle substantially perpendicular to the surface of the key-top forming surface 41. ing.

Next, small projections 47 are provided on the locking surface 43 at predetermined intervals as shown in FIG. As shown in FIG. 1, the small projection 47
It protrudes so as to be inclined at about 45 ° and oriented in a direction substantially parallel to the surface of the key top forming surface 41. That is, the small projection 47 is oriented in a direction substantially orthogonal to the rail-shaped projection 45. The small projections 47 are provided between the plurality of rail-shaped projections 45 as shown in FIG.

Next, the flexible switch substrate 70 is shown in FIG.
As shown in (1), it is made of a flexible sheet and is provided with a switch contact 71 at a predetermined position.

Next, the base 75 is made of an iron plate and is formed in substantially the same shape as the flexible switch substrate 70.

Then, as shown in FIG.
The flexible switch substrate 70 and the base 75 are placed on the key top forming surface 41 of the
When these members are locked by the locking claws 49 (see FIG. 2) provided in the above, these members are integrally fixed.

Then, for example, if one end of a seesaw type key top 45 shown in FIG. 1 (this key top 45 is not shown but is swingably connected to the case 40 at the center thereof) is pressed. The push rod 51 provided immediately below the switch pushes the switch contact 71 to turn it on.

The case 40 is also provided with other various key tops as described above, and by pressing each of them, a switch contact facing the key top is turned on.

Next, the case 10 is made of synthetic resin, and is formed in a shape covering the key top forming surface 41 of the case 40 and a shape covering the locking surface 43 of the case 40. The main surface 11 and the locking surface 13 are formed integrally with the main surface 11 and the locking surface 13 in a state where both surfaces are bent at an angle of about 45 ° as in the case 40. .

As shown in FIG. 1, a bolt hole 15 for attaching a bolt 60 described below is provided at a predetermined position on the lower surface of the main surface 11.

On the other hand, on the lower surface of the locking surface 13, rail-like projections 17 provided linearly at predetermined intervals as shown in FIG.
And rail-like projections 19 which are similarly provided at predetermined intervals in a straight line. Both rail-shaped projections 17, 19
Are the rail-shaped projections 45 provided on the case 40 in the meantime.
Are provided in parallel with an interval corresponding to the width for inserting. The rail-shaped projections 17 and 19 are arranged so as to alternately sandwich the rail-shaped projection 45 from both sides.

As shown in FIG. 1, each of the rail-shaped projections 17 and 19 is inclined by about 45 ° with respect to the surface of the locking surface 13 and is substantially perpendicular to the surface of the main surface 11. It protrudes at an angle.

Next, a small projection 21 is provided on the side wall of the rail-shaped projection 17 of the locking surface 13 as shown in FIG. As shown in FIG. 1, the small projections 21
Projecting so as to incline by about 45 ° with respect to the surface and to be in a direction substantially parallel to the surface of the main surface 11.
In other words, the small projection 21 faces in a direction substantially orthogonal to the rail-shaped projections 17 and 19. These small projections 21 are provided at positions facing the small projections 47, respectively.

The flexible switch substrate 70
In order to attach the case 10 to the case 40 to which the like is attached, as shown in FIG. Insert the protrusion 45.

At this time, the small projection 47 abuts on the lower surface of the small projection 21. Since the small projections 47 and 21 have elasticity, respectively, if the two cases 10 and 40 are sandwiched between each other with a strong force, the two small projections 47 and 21 are elastic. The small projections 47, 21 bend and the small projection 47 gets over the small projection 21 and snaps into engagement, so that the two are fixed as shown in FIG.

Then, as shown in FIG. 3, a bolt 60 is inserted from the case 40 side, and its tip is screwed into a bolt hole 15 provided in the case 10, and finally a name plate 65 of the case 40 is attached. Panel 1 is completed.

As described above, the projection 7 of the operation panel 1 shown in FIG. 1 cannot move in the direction of the arrow A shown in FIG. 1 due to the engagement of the rail-shaped projections 17, 19, and 45. Further, due to the engagement of the small projections 21 and 47, the movement in the direction of the arrow B perpendicular to the arrow A becomes impossible. Therefore, the protrusion 7 can be securely fixed.

Further, since each of the rail-shaped projections 17, 19, 45 and each of the small projections 21, 47 project obliquely with respect to the thickness direction of the projection 7, the thickness of the projection 7 is reduced. be able to.

In this embodiment, the main body 3 and the protruding portion 7 of the operation panel 1 are bent at the bent portion 9 and the two cases 10 and 40 are bent accordingly. The direction of pulling out of the forming die when forming the molds 10 and 40 is a direction perpendicular to the surface on the side of the main body 3 having a complicated structure (the direction of arrow B). Since it coincides with the direction B, not only the molding is simple, but also the small projections 21 and 47 only protrude in the direction perpendicular to the drawing direction B, so that a slide core having a simple structure is inserted into the molding die. The molding can be done just by itself. That is, despite the provision of the snap-in structure engaging surface on the surface oblique to the direction in which the molding die is pulled out, the structure of the molding die is simple and its manufacture can be facilitated.

Although one embodiment of the present invention has been described in detail, the present invention is not limited to this, and various modifications can be made as follows, for example. Although the above embodiment shows an example in which the switch mechanism is built in the operation panel, the built-in electronic components may be other various electronic components.

Although the above embodiment shows an example in which the present invention is applied to an operation panel having a bent portion, the present invention may be applied to an operation panel having no bent portion. It may be used for fixing. In short, the present invention can be applied to any part that fixes the two molded members by a snap-in structure.

[0038]

As described in detail above, the present invention has the following excellent effects. The thickness between the two molded members fixed by the snap-in method can be reduced.

The molding members can be securely fixed.

Even when it is necessary to pull out the molding die obliquely with respect to the surface of the molding member, the structure of the molding die can be simplified and its manufacture can be performed easily.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of an operation panel using the present invention.

FIG. 2 is an exploded perspective view of a main part of the operation panel 1.

FIG. 3 is a diagram illustrating a method of assembling the operation panel 1.

FIGS. 4A and 4B are schematic perspective views showing an example of a video deck.

FIG. 5 is a side view of the operation panel 85.

FIG. 6 is a schematic cross-sectional view of a main part showing a locking claw 99 provided on a case 89.

[Explanation of symbols]

 Reference Signs List 1 operation panel 10 case (first molded member) 17, 19 rail-shaped projection 21 small projection 40 case (second molded member) 45 rail-shaped projection 47 small projection 9 bent part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16B 5/00-5/12 H05K 5/03 H05K 7/12

Claims (2)

(57) [Claims] In a fixing structure for fixing between a first and a second molding member by a snap-in structure, a surface of the first molding member is parallel to the surface so as to be inclined with respect to the surface. And two projections projecting from the first mold are provided.
A small protrusion is provided on the side wall of one of the two protrusions provided on the member, the protrusion being provided in a direction substantially perpendicular to the protrusion direction of the protrusion. A projection that projects obliquely and a small projection that projects in a direction substantially perpendicular to the projection direction of the projection are provided, and a second molding member is provided between the two projections provided on the first molding member. A molded member characterized by inserting the provided projection and engaging small projections provided on the first and second molded members with each other, thereby fixing the first and second molded members. Fixed structure between. 2. By providing a bent portion at a predetermined position, various electronic components are stored between two cases each having two surfaces having different angles, and at least two surfaces of each of the two cases are provided. An operation panel having a structure in which any one of the two opposing surfaces is fixed by a snap-in structure, wherein a surface of one of the two cases is obliquely inclined with respect to the surface. Two protrusions projecting in parallel
And one of the two projections provided on the one case.
A small protrusion protruding in a direction substantially perpendicular to the protrusion direction of the protrusion on the side wall of the other protrusion; a protrusion protruding obliquely to the surface on the other case surface; A small projection projecting in a direction substantially perpendicular to the direction in which the two cases are provided. Inserting the projection provided in the other case between the two projections provided in the one case, An operation panel wherein the small projections provided are engaged with each other, thereby fixing the two cases.