JPH0810569B2 - Switch storage - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a plastic switch housing in which an outer body is integrally molded and coated on the outer periphery of an inner body, and is particularly suitable for use in a switch housing shift knob for automobiles and the like. Regarding the structure.

[Prior Art] Conventionally, for example, as in a shift knob of an automatic transmission for automobiles with a built-in switch, an accommodating body is an inner body made of hard plastic, and an outer body integrally molded and covering the outer circumference of the inner body. There is known a structure of a switch housing configured by and. This type of switch housing is, for example,
It was constructed as shown in FIGS. 17 to 19 (Japanese Utility Model Laid-Open No. 60-71930).

In the figure, 1 indicates a shift knob, 2 indicates an interior body formed of hard plastic, and the interior body 2 includes:
A storage recess 3 for storing a switch (not shown) is provided. In the vicinity of the opening end of the storage recess 3 of the inner body 2, the storage recess 3 is formed by die-cutting in the direction in which the storage recess 3 is demolded, that is, in a direction substantially perpendicular to the opening direction of the storage recess 3.
An engaging portion 4 having an undercut shape in the opening direction of
5 is formed. Then, in order to pull out the molds for forming the engaging portions 4 and 5 in the direction substantially perpendicular to the opening direction of the storage recess 3 (direction A in FIG. 19), the side notches 6 and 7 are formed.
Are formed.

Reference numeral 8 denotes an outer body made of soft plastic, which is integrally formed so as to cover the outer periphery of the inner body 2. The outer body 8 is formed with an opening 9 having a shape that substantially matches the opening end of the housing recess 3 of the inner body 2. The opening 9
The lid 10 shown in FIG. 18 is fitted and the storage recess 3 is closed.
The lid 10 is provided with engaged parts 11 and 12 having claws that engage with the engaging parts 4 and 5 of the inner body 2, and the engaging parts 4 and 5 and the engaged parts 11 and 12 are provided. With the engagement of, the lid 10 is fixed to the shift knob body side.

[Problems to be Solved by the Invention] However, the structure of the conventional switch housing as described above has the following problems.

First, at the time of molding the inner body 2, to form the engaging portions 4 and 5,
There is a problem that a mold member that slides in a direction substantially perpendicular to the opening direction of the storage recess 3 (direction A in the drawing) is required, and the mold structure becomes complicated. Also, due to the complexity of the mold structure,
It is difficult to reduce the size of the entire mold.

Further, in order to remove the mold, the notch 6 is formed in the inner body 2,
7 is provided, but since this portion is only the soft plastic layer of the exterior body 8 after integrally molding the exterior body 8, there is a problem that the strength is locally reduced.

Further, the engaged portions 11, 12 of the lid 10 are provided with claws,
In order to secure the necessary strength for the claw portion, it is necessary to form the entire lid 10 from a high-strength resin, and there is also a problem that the high-strength resin is used, resulting in an increase in cost.

Focusing on the above problems, the present invention has a simple structure of the molding die, avoids the formation of a layer only for the outer package, and can use a cheap material for the lid, which is of high performance and low cost. An object is to provide a cost switch housing.

[Means for Solving the Problem] A switch housing according to the present invention for this purpose is composed of an inner body made of hard plastic and an outer body made of soft plastic integrally molded around the outer circumference of the inner body. A switch housing body in which a housing recess for housing a switch is formed in the housing body, and an opening of the outer housing recess is closed by a lid engageable with the housing body side. In addition, although it has an undercut portion in the opening direction of the storage recess, the molding die can be forcibly pulled out in the opening direction of the storage recess by elastic deformation of itself when the inner body is molded, and elastically deformable even after the outer body is integrally shaped. And at least one engaging portion to be retained in the lid, the lid being provided with an engaged portion capable of engaging with the engaging portion.

[Operation] In such a switch housing, the engaging portion with the lid formed in the housing recess of the inner body is structured to be elastically deformable both during die cutting and after integrally molding the outer body. .
Since the mold forming the engaging portion can be forcibly removed in the opening direction of the storage recess, it is not necessary to remove the mold in the direction perpendicular to the opening direction, and the structure of the entire mold is simplified. At the same time, the notch for die cutting as shown in FIG. 19 is not necessary, and it is possible to avoid the formation of the part having only the exterior body layer. In addition, since the engaging portion on the inner body side has an elastically deformable structure, the engaging portion on the lid side can be smoothly deformed by utilizing the elastic deformation of the engaging portion without providing a claw on the engaged portion. And it becomes possible to engage with sufficient strength. Since the claws do not have to be provided on the lid side, the lid material does not need to have such high strength, and an inexpensive resin can be used.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

First Embodiment FIGS. 1 to 10 show a first embodiment of the present invention and show a case where the present invention is applied to a shift knob of an automatic transmission for an automobile.

In FIGS. 1 to 5, reference numeral 21 denotes a switch built-in type shift knob as a switch housing. The shift knob 21 includes a housing recess 24 for housing a switch 25 in a housing body 24 composed of an inner body 22 made of hard plastic and an outer body 23 made of soft plastic integrally molded around the outer circumference of the inner body 22. Is formed, and the storage recess 26 is formed.
The opening 27 is closed by a lid 28.

In the storage recess 26 of the inner body 22, an engaging portion 30 having a claw 29 having an undercut portion at the tip end with respect to the opening direction of the storage recess 26, and an engaging portion 32 having a claw 31 are formed. There is.
Of these, the engaging portion 30 is formed so as to extend toward the opening direction of the storage recess 26, and both sides are formed in a space portion so that the engaging portion 30 itself is elastically deformable. Then, as will be described later, at the time of molding the inner body 22, the mold for molding the engaging portion 30 can be forcibly removed in the opening direction of the storage recess 26 by utilizing the deformation of the engaging portion 30 itself, and The engaging portion 30 is kept elastically deformable even after the outer casing 23 is integrally molded. The engaging portion 32 is die-cut substantially at a right angle to the opening direction of the storage recess 26, but the cylindrical portion 33 for die-cutting is used.
Are formed inside the lower portion of the inner body 22.

The outer body 23 is formed with an opening 34 having a shape along the opening end of the housing recess 26 of the inner body 22, and the opening 34 of the housing recess 26 is formed by both of them. A lid fitted in this opening 27
An engaged portion 35 that engages with the engaging portion 30 and an engaged portion 36 that engages with the engaging portion 32 are integrally formed with the lid 28. Then, the engaging hole 37 provided in the engaged portion 35 is
The lid 28 is fixedly attached to the housing body 24 by engaging with the claw 29 of 30 and the engaging hole 38 provided in the engaged portion 36 with the claw 31 of the engaging portion 32. Further, in the present embodiment, the engaged portion 35
Are reinforced by ribs 39, and their rigidity is improved so that they are not deformed by the force during assembly.

The switch 25 is fixed to the inner body 22 with screws 40. The operation button 41 penetrates the inner body 22 and the outer body 23,
The shift knob 21 is exposed through the opening 42.

The manufacturing and assembling of the apparatus of the embodiment constructed as described above are carried out as shown in FIGS. 6 to 10.

FIG. 6 shows a state at the time of molding the inner body 22, the molds 51 and 52 forming the inner body 22 are removed in the opening direction of the storage recess 26 and the opposite direction, respectively, and the mold 53 is stored in the storage recess 26.
Is pulled out through the cylinder upper portion 33 in a direction substantially perpendicular to the opening direction of the cylinder. As shown in FIG. 7, the mold 51 starts to open before the mold 52, and when the mold 51 disengages from the engaging portion 30, the mold 52 starts to open.
The mold 52 is forcibly removed from the undercut portion of the claw 29.
At this time, as shown in FIG. 7, the engaging portion 30 is elastically deformed, so that the die 52 can be forcibly removed even if the claw 29 is present. The engagement portion 32 is formed by a mold 53 and is opened in a direction substantially perpendicular to the opening direction of the storage recess 26.

After molding the inner body 22, the outer body 23 is integrally molded around the outer circumference of the inner body 22 as shown in FIG. At the time of molding the exterior body 23, the molds 54 and 55 are closed while the engagement part 30 is slightly elastically deformed so that the mold can be opened in the opening direction of the storage recess 26, and the mold 56 is the tubular part 33. It is closed from below. In this state, the exterior body 23 is integrally molded, and the molds 54, 55, 56 are opened to mold the housing body 24.However, when the housing body is taken out, the engaging portion 30 is deformed by its elasticity. The shape is restored to the state shown in FIG. In this state, since both sides of the engaging portion 30 are kept in the space, the engaging portion 30 is kept elastically deformable within the space.

In molding the inner body 22, it is not necessary to perform die cutting in the lateral direction perpendicular to the opening direction of the storage recess as shown in FIG. 19, so that the die structure is greatly simplified. Mold 53
Is pulled out in a direction substantially perpendicular to the opening direction of the storage recess,
Since the tubular portion 33 is to be removed by using the tubular portion 33, and since the tubular portion 33 is originally necessary for taking out the lead wire of the switch 25, the presence of the die 53 does not complicate the entire die. I won't. In the molded container body 24 after molding, the inner body 22 does not have a notch for die cutting and the outer body 23 layer alone does not occur, so that there is no locally reduced strength.

As shown in FIG. 10, a switch 25 is attached to the molded container body 24, and a lid 28 is attached thereto. When the lid 28 is mounted, the engagement hole 37 of the engaged portion 35 is fitted into the claw 29 of the engagement portion 30.
The engaging hole 38 of the engaged portion 36 engages with the claw 31 of the engaging portion 32. At this time, as the engaged portion 35 is inserted, the engaging portion 30
Is elastically deformed, and when the claw 29 enters the engaging hole 37, the engaging portion 30 naturally recovers elastically to be in a normal mounted state. Since the claw structure is not required on the lid 28 side, it is not necessary to use high strength resin as the material of the lid 28.

Second Embodiment FIG. 11 shows a second embodiment of the present invention.

This embodiment is different from the first embodiment in that the lid and the switch are integrated. In the figure, 61 is a shift knob as a storage body, 62 is a storage recess, 63 is an elastically deformable engaging portion, and 64 is an engaging portion.
A switch with lid 65 is attached to the opening of the storage recess 62. The lid switch 65 is provided with a lid 66, an engaged portion 67 that engages with the engaging portion 63, and an engaged portion 68 that engages with the engaging portion 64. The switch with lid 65 is inserted and mounted in the storage recess 62 from the front. As described above, the present invention can be applied even to a device in which the lid and the switch are integrated. Other configurations and operations are the same as in the first embodiment.

Third Embodiment The present invention is not limited to the shift knob described above, but can be applied to other switch housings such as a console box and a safety pad. FIGS. 12 to 16 show a third embodiment of the present invention, in which the present invention is applied to a switch built-in type door portion of an automobile console box.

In the figure, 71 is a console box, and 72 is a door as a switch housing. The door 72 is configured as an integrally molded product of an inner body 73 made of hard plastic and an outer body 74 made of soft plastic, and its storage recess 75.
Switch 77 is fixed inside via screw 76, and storage recess 75
The opening 78 is closed by a lid 79. In this embodiment, elastically deformable engaging portions 80 and 81 are provided on both sides inside the storage recess 75 of the inner body 73, and the lid 79 is engaged with the engaging portions 80 and 81, respectively. Engaging portions 82 and 83 are provided.

In this embodiment, when the inner body 73 is molded, the mold is forcibly pulled out toward both the engaging portions 80 and 81 in the opening direction of the housing recess 75.
Other functions are the same as in the first embodiment.

As described above, the present invention can be applied to various switch housings.

[Effects of the Invention] As described above, according to the switch housing of the present invention, the inner body is provided with the elastically deformable engaging portion formed by forced removal of the molding die in the opening direction of the housing recess, and the engaging portion is provided. The lid can be attached by the engagement of the mating portion and the engaged portion provided on the lid, so that the mold for forming the engaging portion does not have to be pulled out to the side, and the mold is placed on the side. Since it is not necessary to provide a notch for removing the inner body, the structure of the entire mold can be greatly simplified and the size can be reduced. Further, since there is no die-cutting notch, only the exterior body layer made of soft plastic is eliminated, and the strength of the container can be improved. Further, as a result of the elastically deformable structure of the engaging portion, it is not necessary to provide a claw on the engaged portion on the lid side, and it is possible to obtain an effect that an inexpensive resin material can be used for the lid. To be

[Brief description of drawings]

FIG. 1 is a side view showing a partial longitudinal section of a switch housing according to a first embodiment of the present invention, FIG. 2 is a front view of the apparatus of FIG. 1, and FIG. 3 is a housing of the apparatus of FIG. FIG. 4 is a perspective view of a main body, FIG. 4 is a perspective view of an interior body of the apparatus of FIG. 1, FIG. 5 is a perspective view of a lid of the apparatus of FIG. 1, and FIG. 6 is a molding of the interior body of the apparatus of FIG. 7 is a partial vertical cross-sectional view showing the state of FIG. 7, FIG. 7 is a partial vertical cross-sectional view showing the state of removing the mold from the state of FIG. 6, and FIG. 8 is a partial vertical cross-section showing the state of the apparatus of FIG. FIG. 9 is a partial vertical cross-sectional view of the molded storage body main body after the mold is removed from the state of FIG. 8, and FIG. 10 is a state in which a switch and a lid are attached to the storage body main body of FIG. FIG. 11 is an exploded perspective view of the switch housing according to the second embodiment of the present invention, FIG. 12 is an external perspective view of the switch housing according to the third embodiment of the present invention, 13 is an enlarged partial sectional view taken along the line XIII-XIII in FIG. 12, FIG. 14 is a partial perspective view of the housing body of the apparatus of FIG. 12 as seen from the bottom side, and FIG. 15 is of the apparatus of FIG. FIG. 16 is a perspective view of a lid, FIG. 16 is a perspective view of an inner body of the housing body of FIG. 14, FIG. 17 is a perspective view of a conventional shift knob, and FIG. 18 is a perspective view of a lid attached to the shift knob of FIG. FIG. 19 is a perspective view of the inner body of the shift knob of FIG. 21 …… Shift knob as switch housing 22, 73 …… Inner body 23,74 …… External body 2 …… Housing body 25,77 …… Switch 26, 62,75 …… Housing recess 27,78 …… Opening Part 28, 79 ... Lid 29, 31 ... Claw 30, 63, 80, 81 ... Elastically deformable engaging part 32, 64 ... Engaging part 33 ... Cylindrical part 35, 36, 67, 68 , 82, 83 ...... Engaged parts 37, 38 ...... Engagement holes 51, 52, 53, 54, 55, 56 ...... Type 61 ...... Shift knob 65 as a storage body 65 ...... Switch with cover 66 ...... Lid 71 …… Console box 72 …… Door as switch housing

Claims (1)

[Claims] 1. A storage recess for storing a switch is formed in a storage body main body composed of an inner body made of hard plastic and an outer body made of soft plastic integrally formed on the outer periphery of the inner body. In a switch storage body in which an opening of the storage recess is closed by a lid engageable with the main body of the storage body, an inner cut portion is provided in an inner portion of the storage recess of the interior body in an opening direction of the storage recess. At the time of body molding, the molding die can be forcibly pulled out in the opening direction of the accommodating recess by elastic deformation of itself, and at least one engaging portion that is elastically deformable even after integrally molding the exterior body is formed. A switch storage body, wherein a lid is provided with an engaged portion capable of engaging with the engaging portion.