JP2000238073A - Housing part and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing part wherein a resin molded part which holds a certain bond with high positional accuracy is incorporated in a metal molded housing part obtained by molding a metal material to reduce the thickness thereof in a housing part constituting an apparatus, and a method for efficiently producing the housing part by molding processing. SOLUTION: A resin additionally molded part 2 is molded so as to be directly integrated with a metal molded housing part 1 obtained by molding a metal material to reduce the thickness thereof to form a housing part 10. In a method for producing the housing part 10, as a mold partially used in common of the mold previously used in the molding of the metal material to mold the metal molded housing part 1, a cavity combining the metal molded housing part 1 and a newly mounted resin mold to subject them to resin molding is constituted to succeedingly execute resin molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing part for forming a resin molded part by integrally molding a resin material with a part of a metal molded housing part formed by molding a metal material. The present invention also relates to a manufacturing method for manufacturing the above-mentioned housing component.

[0002]

2. Description of the Related Art Hitherto, resin molded products such as injection molding have been frequently used for housing components constituting various devices because of the degree of freedom in designing the external shape.
However, the demand for portable devices in recent years has led to the miniaturization of the devices themselves, and further increasing the opportunity to incorporate various electronic components into the devices described above. Furthermore, it has excellent electromagnetic wave shielding properties,
At the same time, a housing component having a mechanism capable of preventing intrusion of dust has been required.

It has been known that a metal material formed by molding has been put into practical use as a material applied to housing parts. As a metal material to be subjected to the above-mentioned molding, for example, a magnesium alloy in the form of a chip is heated and melted in a cylinder and injected into a mold by a forward movement of a screw. There is a processing method based on the same principle.

[0004] By applying the metal material by the above-mentioned forming process, a thin product can be obtained as compared with a conventionally known metal material by die casting or sand casting, and housing parts constituting various devices are obtained. By applying this method, it is possible to obtain a component which is thin and has the required strength and is excellent in electromagnetic wave shielding properties.

With reference to FIGS. 10 and 11, a description will be given of a housing component to which a metal material formed by the above-mentioned forming process is applied.

FIG. 10 shows a cross section of a main part of a housing part according to a typical example in which a metal material formed by the above-mentioned forming process is applied. That is, the housing component 50 is composed of a metal molded housing component 51 and a resin molded component 52, and is fixed to the back surface of the metal molded housing component 51 through an opening provided in the metal molded housing component 51. A mechanism for exposing the push button portion 53 of the resin molded component 52 and pressing a push button switch component (not shown) built in the housing is realized.

The above-mentioned metal molded casing component 51 has a positioning boss 54 for positioning the resin molded component 52 when fixing it.

Various methods have been devised for fixing the resin molded part 52 to the metal molded housing part 51, such as bonding or mechanical fitting, but in any case, they are separately set. It is necessary to provide a place for an assembling process in which individual parts manufactured in the process are assembled and assembled to be assembled into one part.

FIG. 11 shows a cross section of a main part of a housing part according to another typical example to which a metal material formed by the above-mentioned forming process is applied. That is, the housing part 50a is constituted by a metal molded housing part 51a and a resin molded part 52a, and a hook part 53a for fixing a housing part (not shown) facing the end of the metal molded housing part 51a. The resin molded part 52a having
a is fixed to the back surface.

The metal molded housing part 51a has a positioning boss 54a, which positions the resin molded part 52a when fixing it.

Various methods have been devised for fixing the resin molded part 52a to the metal molded housing part 51a, such as bonding or mechanical fitting, but in any case, they are separately set. It is necessary to provide a place for an assembling process in which individual parts manufactured in the process are assembled and assembled to be assembled into one part.

[0012]

As described above, in the structure using the metal molded housing parts to which the conventional technique is applied, a housing structure having a thin structure equivalent to that of the resin molded housing parts can be obtained. The problems described remain.

For example, when the push button portion is exposed from the opening provided in the metal molded housing component, it is necessary to separately mold the resin molded component forming the push button portion and to go through an assembling process.

Similarly, when a component utilizing the electrical insulation, flexibility, etc. of a resin material is added to the above-mentioned metal molded casing component, it is necessary to separately mold the resin molded component and go through an assembly process. There is.

[0015]

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention employs the following means, focusing on the difference between the temperature at which a metal material is molded and the temperature at which a resin material is molded.

1) In a metal molded casing part formed by molding a metal material, a resin molded part is molded integrally with the metal molded casing part.

By taking this measure, an effect of forming a housing component having characteristics of both the metal material portion and the resin material portion is obtained.

2) In the manufacturing method for molding a housing component, the mold used for molding the housing component includes a common mold, a metal molding mold, and a resin molding mold. Further, a metal molded housing part is molded by the common mold and the metal molding mold, and then a resin molded part is molded by the common mold, the metal molded housing part, and the resin molding mold. And molded integrally with the metal molded housing part.

By taking this measure, a part of a molding die is shared, and an effect is obtained in which a resin molded component is integrated with a metal molded casing component to form a directly molded casing component.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention takes the following forms.

1) In the case parts constituting the apparatus, a resin molded part is formed by integrally molding a resin material with a metal molded case part formed by molding a metal material.

By taking this form, an effect of forming a housing component having characteristics of both a metal material and a resin material is obtained.

2) In the above-mentioned housing part, the additional resin molded part integrally formed with the above-mentioned metal molded housing part is provided with a connecting part which is integrated with and integrated with the above-mentioned metal molded housing part. A connection releasing part for releasing the connection.

By taking this form, the additional resin molded part integrally molded with the above-mentioned metal molded casing part in the casing part is made flexible at its tip by the uncoupling part for releasing the coupling. Is obtained.

3) In the method of manufacturing a housing part constituting the apparatus, a metal molded housing part formed by molding a metal material is formed by a mold configured by combining a common mold and a metal molding mold. A resin-added molded part that is molded and then molded integrally with the metal-molded housing part is configured by combining a common mold and a resin-molding mold with the metal-molded housing part mounted. It is molded with a mold.

By taking this form, there is obtained an effect that a casing component having characteristics of both a metal material and a resin material is formed in a continuous process.

4) In the above-described method for manufacturing a housing component,
A state in which a mold release agent is applied to a predetermined portion of a metal molded housing part molded by a mold configured by combining the common mold and the metal molding mold, and the metal molded housing part is mounted. The resin-added molded part integrated with the metal-molded housing part by a mold configured by combining the common mold and the resin-molding mold described above is combined with the metal-molded housing part to form an integral part. And a decoupling portion for releasing the coupling.

5) In the above-described method for manufacturing a housing component,
A mold release sheet is attached to a predetermined portion of a metal molded housing part molded by a mold configured by combining the common mold and the metal molding mold, and the metal molded casing part is mounted. Combined with the above-mentioned metal-molded housing part, it is combined with the above-mentioned metal-molded housing part to be integrated with the above-mentioned metal-molded housing part using a mold configured by combining a common mold and a resin molding die. And a decoupling portion for releasing the coupling.

By adopting these forms, there is obtained an operation of manufacturing a casing component formed by integrating a resin-added molded component having flexibility with a metal molded casing component.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment according to the present invention will be described with reference to FIGS.

FIG. 1 shows a cross section of a main part in one representative embodiment of a housing component according to the present invention. That is, the metal molded housing part 1 formed by molding a metal material and the additional resin molded part 2 formed by molding a resin material are combined and integrated to form the housing part 10.

The housing component 10 has a function of exposing the push button portion 5 to the opening and pressing a push button switch (not shown) built in the apparatus.

The connection between the metal molded casing part 1 and the additional resin molded part 2 is formed by a boundary between the metal molded casing part 1 and the additional resin molded part 2. The connection is made by the connecting portion 4 which performs a proper connection to ensure the integrated state.

In the case part 10, the metal molded case part 1 and the additional resin molded part 2 are in contact with each other with a boundary surface. It has a decoupling portion 3 in which the coupling is prevented by interposing a mold agent or the like. Therefore, when a force is applied to the uncoupling portion 3 in a direction in which the additional resin molded component 2 is separated from the metal molded casing component 1, the additional resin molded component 2 bends according to the elasticity of the resin material. I do.

Therefore, when the user of the apparatus using the housing part 10 presses the push button 5, the push button 5 bends at the uncoupling portion 3 provided in the vicinity thereof, and Push button unit 5 moves in the pressed direction.

By the pressing operation, a mechanism is realized in which the push button unit 5 presses a push button switch component (not shown) built in the apparatus.

The additional resin molded part 2 in the vicinity of the push button part 5 is usually in close contact with the metal molded housing part 1 and forms a mechanism for preventing intrusion of dust.

Further, since the casing component 10 is entirely constituted by the metal molded casing component 1, the casing component 10 retains necessary strength and also has a capability of shielding electromagnetic waves and the like.

Furthermore, since the above-mentioned metal molded housing part 1 is formed by molding a metal material, as described in the description of the prior art, the realization of a small and lightweight device shape with a thin structure can be expected.

FIG. 2 shows a cross section of a main part of another typical embodiment of the housing component according to the present invention. That is, the metal molded housing part 1a formed by molding a metal material and the resin additional molded part 2a formed by molding a resin material are combined and integrated, and the housing part 10
a.

The housing part 10a has a function of mechanically connecting to a housing part (not shown) corresponding to the housing part 10a by providing a hook part 5a at an end. Show.

The connection between the metal molded casing part 1a and the resin additional molded part 2a is made by the metal molded casing part 1a.
a and the additional resin molded part 2a are integrated with a joint part 4a that grasps each other in a geometrical manner with a boundary surface in which the resin additional molded part 2a is intricate.

In the case part 10a, the metal molded case part 1a and the additional resin molded part 2a are in contact with each other with a boundary surface, but are separated from the boundary surface in advance during the molding process. It has a decoupling portion 3a in which bonding is prevented by interposing a mold agent or the like. Accordingly, when a force is applied to the uncoupled portion 3a in a direction in which the additional resin molded component 2a is separated from the metal molded housing component 1a, the additional resin molded component 2a bends in accordance with the elasticity of the resin material. I do.

When mechanically connecting the housing component 10a to a corresponding housing component (not shown), the hook 5
When a is pressed in the direction of the arrow, the hook portion 5a bends at the uncoupling portion 3a provided near the hook portion 5a, and the hook portion 5a moves in the pressing direction.

With reference to FIGS. 3 to 9, a description will be given of a typical embodiment of the method of manufacturing a housing component according to the present invention. FIGS. 3 to 5 show the state of a molding die taking the case component 10 shown in FIG. 1 as an example, and FIGS. 6 to 9 show the situation of the molding die shown in FIGS. 5 is a flowchart showing a process of manufacturing the housing component 10 by using a mold.

Referring to FIG. 3, a description will be given of a mold for molding the metal molded casing part 1 constituting the casing part 10 shown in FIG.

The mold for molding the above-mentioned metal molded casing part 1 is constituted by a common mold 11 and a metal mold 12. The metal material forming the metal molded housing part 1 is as follows.
The common mold 11 is heated to a predetermined temperature and melted in advance, and is then discharged from a metal-forming spout 15 via a metal-forming sprue 13 and a metal-forming runner 14 provided on the metal-forming mold 12. Is filled in a cavity formed by the metal molding die 12 and the metal molding housing part 1.
Is molded.

FIG. 4 is a view showing a state in which the metal-molding mold 12 has been removed after the metal-molded housing component 1 has been molded. That is, the metal molded housing part 1 molded by the configuration of the mold shown in FIG. 3 is solidified by cooling, and further cooled, and when the temperature reaches an appropriate temperature, the mold is opened to perform metal molding. The mold 12 is removed.

By adding a release material to a predetermined portion of the metal molded casing part 1 as required, it is possible to form, for example, the uncoupling portion shown in FIG.

FIG. 5 is a view showing a state in which a resin molding die 22 is attached to the common die 11 holding the metal molded housing part 1. That is, the common mold 11 and the metal molded housing component 1 cooled to a temperature at which molding using a resin material is possible are performed by using the resin molding mold 22.
A new cavity for resin molding is constituted by being combined with. The resin material that has been heated and melted in advance is supplied to the resin molding sprue 2 from the resin molding ejection section 25.
3 and the metal mold housing part 1 and the resin mold 2 via the resin mold runner 24.
2 and the resin-added molded part 2 is molded and integrated with the metal molded casing part 1 to form a casing part 10 (see FIG. 1).

Referring to FIGS. 6 to 9, a description will be given of a typical embodiment of the method of manufacturing a housing component according to the present invention. The reference numerals in each flow are based on FIG.

With reference to FIG. 6, the flow of the method for manufacturing a housing component according to the present invention will be described.

In step S01, the metal molded housing part 1 is formed. Details of the flow in step S01 are shown in FIG.

With reference to FIG. 7, the details of the flow of forming the metal molded casing part 1 in step S01 will be described. The reference numerals quoted in the description are based on FIG.

In step S01a, the metal molding die 12 is mounted on the common die 11, and the process proceeds to step S01b where the die is tightened at a predetermined pressure.

In step S01c, the common mold 11 is used.
The metal mold composed of the metal mold 12 and the metal mold 12 is heated to prepare for the molding of the metal material.

In step S01d, a molten metal material is injected from a metal-forming spout 15 provided in the metal-forming die 12, and is passed through the metal-forming sprue 13 and the metal-forming runner 14 to form the common metal. The cavity formed by the mold 11 and the metal mold 12 is filled.

Returning to FIG. 6, the description of the flow will be continued. In step S02, the mold is cooled, and the process proceeds to step S03 to mold the resin additional molded part 2. Step S03 above
Details of the flow in are based on FIG. 8 or FIG.

One typical embodiment of the resin molding process flow in step S03 will be described with reference to FIG. The reference numerals quoted in the description are based on FIG. 4 and FIG.

In step S03a, the mold composed of the common mold 11 and the metal mold 12 is opened, the flow proceeds to step S03b, the metal mold 12 is removed, and the flow proceeds to step S03c for common use. A mold release agent is applied to a predetermined portion of the metal molded housing part 1 which is fitted to the mold 11 and remains.

At step S03d, the resin molding die 22 is mounted. At step S03e, the die is tightened at a predetermined pressure.

In step S03f, a molten resin material is injected from a resin-molding spout 25 provided in the resin-molding mold 22, and is passed through the resin-molding sprue 23 and the resin-molding runner 24. The cavity formed by the mold 11 and the above-mentioned metal molded casing part 1 and the resin molding die 22 is filled. At this time, in the part to which the release agent is applied, a coupling release part 3 (see FIG. 1) is formed between the metal molded casing part 1 and the additional resin molded part 2.

Referring to FIG. 9, another representative embodiment of the resin molding process flow in step S03 will be described. The reference numerals used in the description correspond to FIGS.
by.

In step S03j, the mold composed of the common mold 11 and the metal mold 12 is opened, the flow proceeds to step S03k, the metal mold 12 is removed, and the flow proceeds to step S03m for common use. A release sheet is attached to a predetermined portion of the metal molded housing part 1 that is fitted to the mold 11 and remains.

In step S03n, the resin molding die 22 is mounted, and in step S03p, the die is tightened at a predetermined pressure.

In step S03q, a molten resin material is injected from a resin molding spout 25 provided in the resin molding die 22, and the common metal is injected via a resin molding sprue 23 and a resin molding runner 24. The cavity formed by the mold 11 and the above-mentioned metal molded casing part 1 and the resin molding die 22 is filled. At this time, in the mounting portion of the release sheet, a decoupling portion 3 (see FIG. 1) is formed between the metal molded casing component 1 and the additional resin molded component 2.

Returning to FIG. 6, the description of the flow will be continued. In step S04, the mold is cooled, the process proceeds to step S05, the mold is opened, and in step S06, the housing component 10, which is a product, is taken out.

In step S07, finishing processing such as removal of unnecessary portions is performed to complete the housing component 10.

In step S08, if there is no continuous molding operation, the process is terminated. If the molding operation is to be continued, the process returns to step S01.

As a molding method seemingly similar to the above-mentioned molding method, there is a method in which a metal part or the like is inserted into a resin molding die and resin molding is already performed. As described in the above embodiment, The molding method according to the present invention is a molding method of performing resin molding in a continuous process following molding of a metal material, and a molding method of inserting another part into a mold at the time of molding, which has been conventionally performed. Is a completely different idea.

[0071]

According to the present invention, the following effects can be expected.

1) In the case parts constituting the device, a resin molded part is formed by integrally molding a resin material with a metal molded case part formed by molding a metal material.

By taking this measure, it is possible to obtain an effect of forming a housing component having characteristics of both a metal material and a resin material.

2) In the above-mentioned casing part, the resin-added molded part integrally molded with the above-mentioned metal molded casing part is connected to the above-mentioned joint part to be integrated with and integrated with the above-mentioned metal molded casing part. A connection releasing part for releasing the connection.

By taking this measure, the additional resin molded part integrally molded with the above-mentioned metal molded casing part in the casing part is made flexible at its tip by the uncoupling part for releasing the coupling. Therefore, an effect of realizing the incorporation of the elastic component without requiring the assembling work is obtained.

3) In a method of manufacturing a housing part constituting an apparatus, a metal molded housing part formed by molding a metal material is formed by a mold configured by combining a common mold and a metal mold. A resin-added molded part that is molded and then molded integrally with the metal-molded housing part is configured by combining a common mold and a resin-molding mold with the metal-molded housing part mounted. It is molded with a mold.

By taking this measure, there is obtained an effect that a casing component having characteristics of both a metal material and a resin material is formed in a continuous process.

4) In the above-described method for manufacturing a housing component,
A state in which a mold release agent is applied to a predetermined portion of a metal molded housing part molded by a mold configured by combining the common mold and the metal molding mold, and the metal molded housing part is mounted. The resin-added molded part integrated with the metal-molded housing part by a mold configured by combining the common mold and the resin-molding mold described above is combined with the metal-molded housing part to form an integral part. And a decoupling portion for releasing the coupling.

5) In the above-described method for manufacturing a housing component,
A mold release sheet is attached to a predetermined portion of a metal molded housing part molded by a mold configured by combining the common mold and the metal molding mold, and the metal molded casing part is mounted. Combined with the above-mentioned metal-molded housing part, it is combined with the above-mentioned metal-molded housing part to be integrated with the above-mentioned metal-molded housing part using a mold configured by combining a common mold and a resin molding die. And a decoupling portion for releasing the coupling.

By taking these measures, the additional resin molded part having flexibility can be integrated with the metal molded casing part without moving the metal molded casing part, without going through the assembling process. Since the housing component formed by the manufacturing is manufactured, an effect that a component having high accuracy can be stably supplied is obtained.

[Brief description of the drawings]

FIG. 1 is an illustration of a housing component according to a representative embodiment of the present invention.

FIG. 2 is an illustration of a housing component according to a representative embodiment of the present invention.

FIG. 3 is an illustration of a method of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 4 is an illustration of a method for manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 5 is an illustration of a method of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 6 is a flowchart of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 7 is a flowchart of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 8 is a flowchart of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 9 is a flowchart of manufacturing a housing component according to a representative embodiment of the present invention.

FIG. 10 is an explanatory view of a housing component according to a conventional technique.

FIG. 11 is an explanatory view of a housing component according to a conventional technique.

[Explanation of symbols]

 1: Metal molded housing part 2: Resin additional molded part 3: Uncoupled part 4: Joint part 10: Housing part 11: Shared mold 12: Metal molded mold 22: Resin molded mold

Claims (5)

[Claims] A housing part constituting an apparatus, comprising: a metal molded housing part formed by molding a metal material.
And a resin additional molded part (2) formed by integrally molding a resin material. 2. The housing component, wherein an additional resin molded component (2) integrally formed with the metal molded housing component (1) is combined with the metal molded housing component (1). 2. The housing part according to claim 1, further comprising: a coupling part (4) for unifying the coupling and a coupling releasing part (3) for releasing the coupling. 3. 3. A method of manufacturing a housing component constituting an apparatus, comprising: a metal molded housing component formed by molding a metal material;
Is formed by combining a common mold (11) and a metal molding mold (12), and then molded integrally with the metal molded housing part (1). (2) is characterized by being molded by a mold configured by combining a common mold (11) with the metal molded housing part (1) mounted thereon and a resin molding mold (22). A method of manufacturing a housing component. 4. The method of manufacturing a casing component according to claim 1, wherein said common mold (11) and said metal mold (12).
A mold release agent is applied to a predetermined portion of a metal molded casing part (1) molded by a mold configured by combining the above and a shared mold (1) with the metal molded casing part (1) mounted thereon. 11) and a resin molding die (22), and a resin molding part (2) integrally molded with the metal molding housing part (1) using a die constituted by combining the metal molding casing with the metal molding casing. 4. A housing part according to claim 3, characterized in that a coupling part (4) for coupling and integrating with the body part (1) and a coupling release part (3) for releasing said coupling are generated. Production method. 5. The method of manufacturing a casing component according to claim 1, wherein said common mold (11) and said metal mold (12).
A release sheet is attached to a predetermined portion of a metal molded casing part (1) molded by a mold constituted by combining the above-mentioned components, and a shared mold (11) with the metal molded casing part (1) attached is mounted. ) And a resin molding die (22) in combination with a metal additional housing part (2) molded integrally with the metal molded housing part (1) by using a metal mold. 4. Manufacture of a housing part according to claim 3, characterized in that a coupling part (4) for coupling and integrating with the part (1) and a decoupling part (3) for releasing said coupling are produced. Method.