JP2008213341A5 - - Google Patents

Description

Outer shell part of electronic device, manufacturing method thereof, and electronic device provided with outer shell part

The present invention relates to an outer shell part of an electronic device (for example, a camera, a projector, a computer mouse, binoculars, a range finder, a surveying instrument, a battery pack, a mobile phone, etc.), a manufacturing method thereof, and an electronic device including the outer shell part. It relates to equipment .

Electronic devices such as cameras and mobile phones are not limited to their original functions, but require elements such as taste and hobby. For this reason, as an external appearance, it is necessary to realize a three-dimensional shape with a plurality of colors, complicated undulations, and the like as means for greatly improving aesthetics.

On the other hand, the outer shell parts of these electronic devices have been conventionally made of metal, but nowadays, synthetic resin outer shell parts are also frequently used from the viewpoint of weight reduction and manufacturing cost reduction. And, since the appearance quality is often insufficient when the synthetic resin outer shell parts are used as they are, means for fixing the exterior sheet member onto the synthetic resin outer shell parts using an adhesive or the like. May be used.

However, when the electronic device is held in a hand for a long time, a load due to the grip strength of the user or the weight of the electronic device may act. Further, as the user's sweat and hand temperature rise, unnecessary moisture and heat transfer occur in the electronic device . When these factors overlap, there may be a problem that the exterior sheet member bonded on the synthetic resin component is displaced.

  As a means for avoiding such a problem, for example, in a grip of an imaging device having an exterior part made of a plurality of molded parts, a grip part fixed to the exterior part and a finger hook provided on the grip part The convex portion is formed by press working, and the grip portion is composed of a pair of left and right metal grip portions and a non-metallic grip portion, and the non-metallic grip The grip of a camera characterized in that the part is an integrally molded product of plastic and rubber is known (for example, see Patent Document 1).

  Further, in the exterior structure of the equipment comprising an inner cabinet in which the equipment is stored and a metal exterior cover that covers the outer periphery of the inner cabinet, the inner cabinet is molded with resin, and the exterior cover is attached, 2. Description of the Related Art A device exterior structure (see, for example, Patent Document 2) is known in which a conductive resin is used for an inner cabinet, and an outer layer is an elastomer and an interior is provided with a grip portion that is molded in two colors with the resin.

  Furthermore, in order to improve aesthetics, as for two-color molding using an insert member, after the insert part is formed with the first color resin by the first mold, the insert part is placed in the second mold and then In an insert two-color molding method for injecting a two-color resin to form an integrated molded product in a state where a part of the insert part is exposed, the insert part is divided into a center part in the center in the width direction and a pair of parts on both sides in the width direction. The side piece portion is continuous with the low rigidity portion, the center surface in the width direction of the center portion protrudes from the surface of the both side piece portions, and the back surface of the center portion in the width direction is the back surface of the both side piece portions. The insert part is placed in the second mold, and when the second color resin is injected, the insert part is deformed by the pressure so that the entire outer peripheral surface of the insert part is the second part. In the mold Insert two-color molding method is characterized in that so as to wear (e.g., see Patent Document 3.) It is known.

JP 2006-47857 A JP 2001-21975 JP 06-31433 A

  The invention according to Patent Document 1 includes a non-metallic grip part that is partially formed by two-color molding of plastic and elastomer, thereby obtaining a good grip feeling by the elastomer and without sticking the elastomer and plastic. Since the elastomer part can be exposed to the appearance that uses many curved surfaces, it is claimed that it has the effect of improving the degree of freedom in design.

By the way, the electronic apparatus including the camera needs to block electromagnetic waves from the outside in order to prevent malfunction. In addition, it is necessary for the electronic device to take measures (EMI measures) that do not emit electromagnetic waves to the outside. Furthermore, since the electromagnetic wave generated from the circuit itself may affect the electronic data in the digital camera, it is necessary to block the electromagnetic wave from the recording medium storing the electronic data. Thus, it is necessary for the outer shell parts of the electronic device to ensure the ability to sufficiently block electromagnetic waves.

For this reason, in order to block the electromagnetic wave, when the conductive material is used in the invention according to Patent Document 1, in order to sufficiently disperse and melt the conductive material with respect to the plastic at the time of manufacturing the outer shell part , High temperature conditions are required. If this high temperature condition is not satisfied, problems such as the conductive material floating on the outer surface of the plastic will occur. On the other hand, the use of high temperature treatment for the elastomer for two-color molding will adversely affect the appearance quality of the elastomer. It becomes. Therefore, in general, such a process often requires complicated heat control, and the heat control often takes time to stabilize the set temperature, and thus often involves a decrease in production efficiency.

  Further, when the plastic is exposed, it is necessary to separately coat with a conductive material or the like in order to hide the poor appearance. Therefore, it has been very difficult to ensure both the quality of appearance and the electromagnetic wave shielding function and to improve the production efficiency.

  Patent Document 2 discloses a configuration in which a synthetic resin in which an elastomer and a conductive resin are mixed is molded in two colors and a conductive resin is used for the synthetic resin. According to this configuration, only one elastomer layer is exposed on the outer surface. For this reason, as in the invention according to Patent Document 1, it has been very difficult to sufficiently obtain the appearance quality of the elastomer while ensuring the conductive performance. And, in order to further improve the decorativeness of the appearance, when trying to add a configuration in which the elastomer is exposed to the outside of two or more colors, the two different types of elastomers are easily eroded at the boundary portion, and the details of the two It was extremely difficult to obtain a high quality appearance in the finish.

  The invention according to Patent Document 3 relates to two-color molding using an insert member. Disclosed is a means for preventing an intrusion of an elastomer that is injection-compression-molded after insertion by deformation of an insert member made of a synthetic resin into an unnecessary portion and molding the elastomer only at a predetermined position. In the invention according to Patent Document 3, the center surface in the width direction of the center portion of the insert part made of synthetic resin protrudes from the surface of the both side piece portions, and the back surface of the center portion in the width direction is the both side pieces. By being configured to be recessed inward from the back surface of the portion, the entire outer peripheral surface of the insert part is in close contact with the second mold by being greatly deformed by the pressure during subsequent molding. There is an advantage in performing two-color molding of a long soft synthetic resin molding and an elastomer without causing a problem of accuracy of a mold or the like.

  However, since the invention according to Patent Document 3 is performed on a long object by a special shape of the insert part which is a long object and its flexibility without requiring accuracy of the mold, it is complicated. It was not suitable for the shape of a molded product, and a hard synthetic resin could not be targeted.

The present invention has been made in view of the above circumstances, and after ensuring the function of blocking electromagnetic waves, it is not necessary to perform complicated heat control, and it is possible to obtain a good appearance quality without performing coating after molding. The invention provides an electronic device outer shell component that can be formed by two-color or three-color molding (additional insert process added to two-color molding) , a manufacturing method thereof, and an electronic device including the outer shell component. Let it be a challenge.

The invention according to claim 1 is an outer layer comprising an inner layer made of a hard synthetic resin containing carbon fiber and an elastomer containing a block copolymer of a polyester block and a polyether block, which is placed on the inner layer. An outer shell part of an electronic device comprising a layer.
The invention according to claim 2 is the outer shell part of the electronic device according to claim 1, wherein at least a part of the inner layer is located on the same plane as the outer layer. There is .
According to a third aspect of the present invention, in the outer shell part of the electronic device according to the first or second aspect, the inner layer has a wall portion that stands on the outer layer side and is surrounded by the outer layer. This is an outer shell component of the electronic device.
According to a fourth aspect of the present invention, in the outer shell component according to any one of the first to third aspects, the outer layer includes a first elastomer part and a second elastomer part arranged through a groove. This is an outer shell part of an electronic device.
An invention according to claim 5 is an electronic apparatus comprising the outer shell component according to any one of claims 1 to 4.
The invention according to claim 6 is a primary process in which a hard synthetic resin containing carbon fiber is injected into a space formed by the first mold and the second mold to mold the inner layer. The mold is opened after the primary process, and a space is formed by an intermediate process in which a pre-formed first elastomer portion is disposed on the inner layer, and the first mold and the third mold, And a secondary step of injecting an elastomer which is a molding material of the second elastomer part into the space and laminating an outer layer on the inner layer.

In the present invention, “on the same plane” means not only on the same plane but also on the same curved surface.
In the invention according to claim 2 , since the hard synthetic resin layer that is the inner layer and the elastomer portion that is the outer layer need only be on the same plane, the first elastomer portion and the second elastomer portion that constitute the elastomer portion . the elastomeric part is provided, the first elastomer section and a second elastomer section cross is purpose also include those provided with a step not coplanar.

According to the outer shell part of the electronic device according to claim 1 of the present invention, an inner layer made of a hard synthetic resin containing carbon fiber, and a block of a polyester block and a polyether block arranged on the inner layer. Because it comprises an outer layer made of an elastomer containing a copolymer, by combining a polyester elastomer and a hard synthetic resin mixed with carbon fiber as a conductive material, without performing complicated heat control, Sufficient conductivity can be ensured.

Further, according to the invention of claim 2, in addition to the configuration of claim 1, at least a part of the inner layer is located on the same plane as the outer layer, so that an outer shell part having a good appearance is realized. Can do.

According to the invention of claim 3, in addition to the structure of claim 1 or 2, the inner layer has a structure of standing on the outer layer side and having a wall portion surrounded by the outer layer. A portion that requires flexibility such as a grip portion of the handle and a portion having hardness suitable for operation and attachment, such as the peripheral portion of the operation button and the attachment portion of the screw, can be formed together. As a result, it is possible to impart a high quality feeling to the touch where flexibility is required. In addition, the operation button push-in operability and good screw attachment are possible for parts that have hardness suitable for operation and attachment, such as the peripheral part of the operation button and the screw attachment part. Therefore, the possibility that the outer layer is peeled off can be reduced, and the durability can be improved.

According to the invention according to claim 4, in addition to the configuration of the invention according to any one of claims 1 to 3, the elastomer constituting the outer layer includes a first elastomer part and a second elastomer part. And the outer surface of the first elastomer part and the outer surface of the second elastomer part are located on the same surface through a groove, so that all layers of the inner layer, the first elastomer part, and the second elastomer part are In an integrally molded state, the outer surface is located on the same surface, ensuring good appearance quality. For this reason, it is possible to cover the camera and other objects with only the outer shell parts, which eliminates the need for coating after molding or providing additional coating means, saving labor during manufacturing and reducing manufacturing costs. can do. Moreover, the outline of a 1st elastomer part can be made clearer by forming a groove part in the boundary of the surface side of a 1st elastomer part and a 2nd elastomer part.

According to the invention which concerns on Claim 5, it was set as the polyester-type elastomer and carbon as an electroconductive material by having set it as the electronic device characterized by having the outer shell part as described in any one of Claim 1 to 4. By combining with a hard synthetic resin mixed with fibers, an electronic device with sufficient conductivity can be realized without performing complicated heat control.

According to the sixth aspect of the invention, the primary layer is formed by injecting the hard synthetic resin containing carbon fiber into the space formed by the first mold and the second mold, and molding the inner layer. A space is formed by a step, an intermediate step of performing mold opening after the primary step, and placing a pre-formed first elastomer portion on the inner layer, and the first die and the third die. And a secondary step of injecting an elastomer which is a molding material of the second elastomer part into the space and laminating the outer layer on the inner layer. Since the natural cooling is achieved by opening the, it is not necessary to perform complicated heat control, and the fusion with the first elastomer part in the secondary molding step can be facilitated. For this reason, it is possible to manufacture an outer shell part of an electronic device having a good appearance and efficiency in a very short time.

By comprising an inner layer made of a hard synthetic resin containing carbon fiber, and an outer layer made of an elastomer containing a block copolymer of a polyester block and a polyether block, which is arranged to overlap the inner layer, The combination of the polyester-based elastomer and the hard synthetic resin mixed with carbon fiber as the conductive material can ensure sufficient conductivity without performing complicated heat control, and at least a part of the inner layer is By being located on the same plane as the outer layer, the appearance is good, and the inner layer has a wall portion that stands on the outer layer side and is surrounded by the outer layer, thereby providing flexibility and durability. An outer shell part of an electronic device that can be improved can be realized.

Moreover, the primary process which inject | emits the hard synthetic resin containing carbon fiber in the space formed by the 1st metal mold | die and a 2nd metal mold | die, and shape | molds an inner layer, After the said primary process A space is formed by an intermediate step of performing mold opening and disposing a pre-formed first elastomer portion on the inner layer, and the first mold and the third mold, and a second space is formed in the space. A secondary process of injecting an elastomer, which is a molding material for the elastomer part, and laminating an outer layer on the inner layer, and then processing the primary molding process, and then opening the mold in the intermediate process, Since it is cooled, it is not necessary to carry out complicated heat control, it is easy to fuse with the first elastomer part in the secondary molding process, and it is efficient in a very short time. The mold in the molding process must match the outer contour of the first elastomer part. A protrusion having a shape and a larger contour and having a size smaller than the thickness of the second elastomer portion. In the secondary molding process, the mold presses the first elastomer portion, and the pressing force causes the first elastomer portion to One elastomer part deforms to fill the space inside the protruding part, and then the second elastomer part does not enter the protruding part space by injecting an elastomer that is a molding material of the second elastomer part. The manufacturing method of the outer shell part of the electronic device which forms a 2nd elastomer part in the area | region outside a protrusion part was implement | achieved.

FIG. 1 is a perspective view showing a grip portion of a camera as an example of an outer shell part of an electronic apparatus according to an embodiment of the present invention, and FIG. 2 shows a hard synthetic resin member in the grip portion of the camera according to the embodiment of the present invention. FIG. 3 is a cross-sectional view showing a state in which the first injection space is formed by closing the core side mold and the primary molding mold during the manufacturing process of the camera grip according to the embodiment of the present invention, (A) A cross-sectional view showing a state in which a hard synthetic resin is injected into the first injection space. FIG. 4 shows a state in which the mold is opened after molding the hard synthetic resin member during the manufacturing process of the camera grip according to the embodiment of the present invention. FIG. 5 is a cross-sectional view showing a state, and FIG. 5 is a diagram illustrating a state in which the first elastomer member is inserted into the fitting recess 32 of the hard synthetic resin member during the manufacturing process of the grip of the camera according to the embodiment of the present invention; FIG. 6 is a sectional view showing a state after insertion, and FIG. FIG. 7 is a cross-sectional view showing the relationship between the core side mold and the secondary molding mold in the manufacturing process of the grip of the camera. FIG. 7 is a diagram showing (a) the core side during the manufacturing process of the camera grip according to the embodiment of the present invention. FIG. 8 is a sectional view showing a state in which the second injection space is formed by closing the mold and the secondary molding die, (A) a sectional view showing a state in which the second elastomer is injected into the second injection space, and FIG. 9A is a cross-sectional view showing a state in which a secondary molding die is opened during a manufacturing process of a camera grip according to an embodiment of the invention, FIG. 9B is a cross-sectional view showing a grip portion of a completed camera, and FIG. (A) a perspective view showing a grip portion of a camera according to another embodiment of the invention, (a) a perspective view showing a relationship with an operation switch, (c) a cross-sectional view taken along BB, and FIG. 10 is different from FIG. It is the (a) front view and the (C) CC sectional view which show the grip part of the camera used as an end side. In this embodiment, the hard synthetic resin member 30 corresponds to the hard synthetic resin layer 3 of the present invention, the first elastomer member 10 corresponds to the first elastomer part 1, and the second elastomer part 2 corresponds to the first elastomer part 1. The term of the second elastomer member 20 is used as a thing.

As an outer shell part of an electronic device according to an embodiment of the present invention, a grip portion formed by three-color molding in a camera is particularly exemplified. The grip portion of the digital camera according to the embodiment of the present invention is based on a combination of three-color molding for decoration purposes, more specifically, two-color molding by injection and insert molding.

  The grip portion includes a hard synthetic resin member 30 serving as an inner layer, and a first elastomer member 10 and a second elastomer member 20 serving as outer layers. The second elastomer member 20 surrounds the periphery of the first elastomer member 10 and is provided integrally. Further, the inner layer and the first elastomer member 10 are integrally formed, and the inner layer and the second elastomer member 10 are integrally formed.

  The hard synthetic resin member 30 is composed of polycarbonate and ASA (acrylonitrile-styrene-acrylic acid ester) resin as main components and carbon fiber as a conductive material mixed in about 20% by weight. The first elastomer member 10 and the second elastomer member 20 both use a polyester-based thermoplastic elastomer whose main component is a block copolymer of polyester and polyether. This block copolymer has a molecular structure in which a polyether soft block is interposed between polyester hard blocks.

  In addition, the carbon fiber content in the present invention is not limited to 20% by weight shown in the above-described examples, and good conductivity and appearance can be exhibited at about 10% to 30% by weight. . When the carbon fiber content is less than 10% by weight, the conductivity is significantly reduced. On the other hand, when the carbon fiber content exceeds 30% by weight, the carbon fiber is raised on the surface and the appearance tends to be impaired. Become prominent.

  A groove 70 is formed in the second elastomer member 20 surrounding the periphery of the first elastomer member 10 at a boundary position with the first elastomer member 10.

  Next, FIG. 9A shows a grip part of a camera according to another embodiment having a notch corresponding to the operation button, and FIG. 9A shows a state where an operation switch is arranged in the notch.

  As shown in the BB cross-sectional configuration of the grip portion of FIG. 9 (c), a peripheral wall 34 is formed standing from the outer peripheral side of the peripheral portion of the notch formed in the inner layer at a position that becomes the peripheral portion of the operation button. The second elastomer member 20 that is an outer layer surrounds the peripheral wall 34 as a unit.

By improving the hardness of the peripheral position of the operation button with this configuration, it is possible to improve the ease of pressing the operation button. Further, with this configuration, the strength of the outer shell part itself can be ensured, and the outer part can be easily attached to the electronic device .

  Further, FIG. 10 shows a grip on the other end side of the camera having a through hole instead of the notch. As shown in FIG. 10 (a), the peripheral wall 34 rising from the outer peripheral side of the peripheral portion of the through hole formed in the inner layer is formed at the position that becomes the peripheral portion of the operation button, and the second elastomer member 20 that is the outer layer is formed. The peripheral wall 34 is integrally surrounded.

Also with the through hole, the ease of pushing the operation button can be improved by improving the hardness of the peripheral position of the operation button in the same manner as the notch. Further, with this configuration, the strength of the outer shell component itself can be ensured, and the exterior structure can be easily attached to the electronic device .

Next, a manufacturing method of the grip part of the camera according to the embodiment of the present invention will be described.
(Primary process)
A hard synthetic resin is injected into an injection space formed by the combination of the core side mold 4 and the cavity side primary molding mold 5 to form a hard synthetic resin member 30 that becomes an inner layer. The resin temperature at this time is about 250 ° C. to 280 ° C. As shown in FIGS. 3A and 3B, the core-side mold 4 has an outer surface 31 that is a part of the outer surface as well as the inner surface of the hard synthetic resin member 30 that is the product of the primary process. Is formed.

In this embodiment, the core side mold 4 is held at about 70 ° C., and the cavity side primary molding mold 5 is held at about 90 ° C. The temperature of the core side mold 4 is desirably 60 ° C. or higher. This is because when the temperature of the core side mold 4 is less than 60 ° C., the carbon fibers are raised on the surface and the appearance quality is deteriorated.
The temperature of the primary molding die on the cavity side is desirably 50 ° C. or higher. This is because when the temperature of the primary molding die on the cavity side is less than 50 ° C., the adhesiveness between the first elastomer member 10 and the second elastomer member 20 used in the secondary process described later is hindered.

  Next, as shown in FIG. 4, after the rigid synthetic resin member 30 is injection molded, the mold is opened. The hard synthetic resin member 30 is naturally cooled by the mold opening. Due to natural cooling, the surface temperature of the hard synthetic resin member 30 (that is, the weld surface with the elastomer in the secondary process) is reduced to about 60 ° C. or less (56 ° C. in the actual measurement value in this example).

  When the mold is opened, the hard synthetic resin member 30 made of hard synthetic resin is disposed in the core side mold 4. The hard synthetic resin member 30 has a fitting recess 32 into which the first elastomer member 10 is fitted.

(Intermediate process (insert process))
The first elastomer member 10 is formed in advance in a separate process, and includes a convex portion corresponding to the fitting concave portion 32 formed in the hard synthetic resin member 30. Further, a relief hole 33 that opens to the inner surface side is formed in the fitting recess 32. The escape hole 33 is provided to prevent an excessive increase in the pressure in the fitting recess 32 and to prevent deformation of the hard synthetic resin member and the mold. The convex portion of the first elastomer member 10 is inserted into the concave portion 32 for fitting of the hard synthetic resin member 30.

(Secondary process)
As shown in FIGS. 5A and 5A, after the first elastomer member 10 is fitted to the hard synthetic resin interior member, as shown in FIGS. The side secondary molding die 6 is closed. The resin temperature at this time is about 200 ° C. to 227 ° C. The core side mold 4 is held at about 70 ° C., and the cavity side secondary mold 6 is held at about 47 ° C.
As shown in FIG. 7, by using the cavity-side mold as the secondary molding mold 6, a second injection space 62 for forming the second elastomer member 20 is formed.

  The mold temperature of the cavity side secondary molding die 6 is preferably in the range of 30 ° C. to 60 ° C. When the mold temperature of the secondary molding die 6 exceeds 60 ° C., burrs are likely to be generated in the second elastomer member 20. In addition, if the mold temperature of the secondary mold 6 on the cavity side is lower than 30 ° C., the adhesion to the hard synthetic resin member 30 is hindered.

  Here, the mold in the secondary molding step has a projecting portion 60 having a contour (similar space 61 in the projecting portion) having a contour similar to the outer contour of the first elastomer member 10 and a contour larger than that of the first elastomer member 10. I have. Therefore, when shown as a cross section as shown in FIG. 6, the inner width W2 of the protruding portion appears as being larger than the outer width W1 of the first elastomer member.

  By closing the core side mold 4 and the cavity side secondary molding mold 6, the first elastomer member 10 enters the protrusion inner space 61 and deforms along the inner surface of the protrusion 60. At this time, the edge surface 63 of the projecting portion 60 and the end surface 11 of the first elastomer member 10 which is deformed and formed are set on the same plane.

  As elements for determining this setting (setting in which the edge surface of the protruding portion 60 and the deformed end surface of the first elastomer member 10 are located on the same plane), the bulkiness, size, and material of the first elastomer member 10 are determined. There are the bulkiness of the protrusion 60, the size of the space 61 in the protrusion, and the like.

  Then, the second elastomer member 20 that is a molding material of the second elastomer member 20 is injected into the second injection space 62, thereby forming the second elastomer member 20 in a region outside the protruding portion 60 in the molding space. The height H1 of the protrusion of the mold in the secondary molding step is smaller than the thickness T1 of the second elastomer member 20 (see the partial enlarged view of FIG. 8A) and the protrusion. Since the edge surface of the portion 60 and the end surface of the deformed first elastomer member 10 are set on the same plane, the second elastomer member 20 does not enter the protruding portion inner space 61 and the first elastomer member 10 Enclose and fuse some sides. The other part of the second elastomer member 20 is fused to the hard synthetic resin layer 3. At this time, a groove 70 is formed at the boundary portion between the second elastomer member 20 and the first elastomer member 10 by the protruding portion 60.

  As shown in FIG. 8, the closed core-side mold 4 and cavity-side secondary molding mold 6 are opened, and the grip portion G of the digital camera is taken out to complete the process.

In the present embodiment , the hard synthetic resin layer 3, which is the inner layer, the first elastomer part 1, and the second elastomer part 2 can all be exposed to the outside through the above-described steps, and have a high hardness directly. The hard elastomeric resin layer 3 having the first elastomer part 1 and the second elastomer part 2 exhibiting gripping force are combined, and furthermore, high quality decoration by the first elastomer part 1 and the second elastomer part 2 can be easily performed. Can be realized.

  In addition, this invention is not restricted to the said Example, It can also carry out about places other than the grip part G. FIG. For example, in the case of a camera, it is possible to provide a three-colored decoration on the back of the camera body except for the liquid crystal screen or on the top, or to attach the tripod at the bottom or the camera (cloud The hard synthetic resin layer 3 can be provided by two-color molding.

  Further, the present invention exemplifies a camera or a mobile phone as an electronic device, but the present invention is not limited to these, and other electronic devices or analog electronic devices (for example, an analog single-lens reflex camera or a wristwatch) Etc.).

  According to the embodiment of the present invention, the elastomer constituting the outer layer uses a block copolymer of a polyester block and a polyether block, but the present invention is not limited to the above embodiment, For example, in addition to the elastomer according to the above embodiment, a copolymer of two kinds of polyester blocks (a copolymer of a polyester block and another polyester block) can be used. Further, in addition to the configuration, It can also be set as the structure containing a polyurethane-type elastomer.

  Further, according to the embodiment of the present invention, the hard synthetic resin constituting the inner layer includes 10% by weight to 30% by weight of carbon fiber in PC (polycarbonate) / ASA (acrylonitrile-styrene-acrylic ester) resin. However, the present invention is not limited to the above-described embodiments. For example, a PC (polycarbonate) / ABS (acrylonitrile-butadiene-styrene) resin can be used as a part of the PC / ASA resin. Further, a part of the resin may be PC (polycarbonate) resin.

On the other hand, in the said Example, although the 1st elastomer member 10 is set as the structure exposed to the exterior only in one place, this invention is not restricted to the said structure, The structure which the 1st elastomer member 10 exposes outside in several places. It can also be.

It is a perspective view which shows the grip part of the camera which is an example of the outer shell components of the precision machine which concerns on the Example of this invention. It is a top view which shows the hard synthetic resin member in the grip part of the camera which concerns on the Example of this invention. FIG. 5 is a cross-sectional view showing a state in which the first injection space is formed by closing the core-side mold and the primary molding mold during the manufacturing process of the camera grip according to the embodiment of the present invention; It is sectional drawing which shows the state which inject | emitted hard synthetic resin in space. It is sectional drawing which shows the state which opened the type | mold after shaping | molding the hard synthetic resin member during the manufacturing process of the grip of the camera which concerns on the Example of this invention. It is sectional drawing which shows the state which inserts the 1st elastomer member in the recessed part for fitting of the hard synthetic resin member during the manufacturing process of the grip of the camera which concerns on the Example of this invention, and (A) after insertion. It is sectional drawing which shows the relationship between the core side metal mold | die and the secondary shaping | molding metal mold | die in the manufacturing process of the grip of the camera which concerns on the Example of this invention. FIG. 5 is a cross-sectional view showing a state in which the second injection space is formed by closing the core-side mold and the secondary molding mold during the manufacturing process of the camera grip according to the embodiment of the present invention; It is sectional drawing which shows the state which injected the 2nd elastomer in the injection space. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a cross-sectional view illustrating a state in which a secondary mold is opened during a manufacturing process of a camera grip according to an embodiment of the present invention, and FIG. It is (A) perspective view which shows the grip part of the camera which concerns on the other Example of this invention, (A) The perspective view which shows the relationship with an operation switch, (C) It is BB sectional drawing. It is the (a) front view and (b) the CC expanded sectional view which show the grip part of the other end side of the camera which concerns on the other Example of this invention.

DESCRIPTION OF SYMBOLS 1 1st elastomer part 10 1st elastomer member 11 End surface 2 2nd elastomer part 20 2nd elastomer member 3 Hard synthetic resin layer 30 Hard synthetic resin member 31 Outer surface part 32 Fitting recessed part 33 Relief hole 34 Perimeter wall 4 Core side metal mold | die 5 Primary molding die 50 First injection space 6 Secondary molding die 60 Protruding part 61 Protruding part internal space 62 Second injection space 63 Edge surface 70 Groove 71 Notch part 72 Through hole 8 Operation button G Grip part H1 Height dimension T1 thickness W1 outer width W2 inner width

Claims (6)

An inner layer made of a hard synthetic resin containing carbon fiber, and an outer layer made of an elastomer that is disposed on the inner layer and contains a block copolymer of a polyester block and a polyether block. Outer shell parts of electronic equipment . 2. The outer shell part of an electronic device according to claim 1, wherein at least a part of the inner layer is located on the same plane as the outer layer . In the outer shell part of the electronic device according to claim 1,
The inner layer has a wall portion that stands on the outer layer side and is surrounded by the outer layer. In the outer shell part of the electronic device according to any one of claims 1 to 3,
The outer layer has a first elastomer part and a second elastomer part arranged through a groove, and is an outer shell part of an electronic device. An electronic apparatus comprising the outer shell component according to claim 1 . A primary process in which a hard synthetic resin containing carbon fiber is injected into a space formed by the first mold and the second mold to mold the inner layer, and the mold is opened after the primary process. And a space is formed by the intermediate step of disposing the pre-formed first elastomer part on the inner layer, the first mold and the third mold, and the second elastomer part in the space And a secondary step of injecting an elastomer, which is a molding material, and laminating an outer layer on the inner layer.