JP2001148576A - Strap support structure for portable unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively manufacture the strap support structure of a portable unit and to miniaturize it. SOLUTION: A strap is fitted, using a joining member 68 for joining casing members 48 and 50. Namely, the joining member 68 which integrally joins the easing members 48 and 50 is shared with the support shaft of the strap, so that the structure of the support part of the strap can be simplified. The number of parts is reduced, and an inexpensive product can be supplied. A shaft part 68B is exposed in a state, where the joining member 68 joins the casing members 48 and 50 and the strap is fitted to the shaft part 68B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a strap support structure for a portable device for attaching a strap to a portable machine, apparatus, device, or the like.

[0002]

2. Description of the Related Art In general, portable equipment such as a portable information terminal and a portable telephone are widely used with a strap attached to a hand for easy carrying. In such a portable device, in the case where the housing is formed by plastic integral molding,
In some cases, a strap support structure as shown in FIG. 6 is provided.

When the housing 10 is formed by three-dimensional molding of plastic, the strap supporting structure has a concave portion 1 which is formed in a U-shaped recess at a predetermined portion on the peripheral side of the housing 10.
2 and at the same time, a support 14 for attaching a strap is formed integrally so as to bridge the center of the opening end of the recess 12. In the strap support structure formed in this manner, one end of the strap is passed through the recess 12,
It is attached by wrapping around the support 14 and tying it.

[0004]

When the above-described strap support structure is formed, a punching die or the like is used to form the concave portion 12 while leaving the portion of the support post 14 in a mold for integrally molding the housing 10. It is necessary to combine the used molds having a complicated structure and integrally mold them. When a mold having such a complicated structure is used, the manufacturing cost increases, and the number of steps for operating the punching die and the like during the integral molding operation increases, so that the manufacturing efficiency decreases and the manufacturing cost increases. There is.

[0005] Further, since the strap is tied to the column 14 formed of a single piece of plastic on the housing 10, the load of the entire portable device is applied to this column. For this reason, the strut 14 must be constructed to have sufficient strength so as to be able to sustain a large load. Therefore, when the support 14 is formed by plastic integral molding, the support 14 is enlarged so as to maintain the strength of the support 14 sufficiently. Such an increase in the size of the column 14 is undesirable because the appearance of the portable device is impaired.

The present invention has been made in view of the above circumstances, and has as its object to newly provide a strap supporting structure for a portable device which can be easily and inexpensively manufactured and can be configured to be small.

[0007]

According to a first aspect of the present invention, there is provided a strap supporting structure for a portable device, wherein a strap is attached by using a fastening member for fastening a housing member. I do.

According to a second aspect of the present invention, in the strap supporting structure for a portable device according to the first aspect, a shaft portion of the fastening member is exposed, and a strap is attached to the shaft portion.

With the above-described structure, the fastening member for integrally fastening the housing member is shared with the strap support shaft, so that the structure of the strap support portion can be simplified. Therefore, the number of parts can be reduced and an inexpensive product can be provided.

According to a third aspect of the present invention, in the strap supporting structure for a portable device according to the first or second aspect, the fastening member is formed so as to open into a recess formed in the middle frame member. The housing member is configured to be fastened while being inserted through the through hole.

With the above construction, in addition to the functions and effects of the first and second aspects of the present invention, the concave portion of the molding die is formed when the middle frame member is integrally molded with the plastic mold. The concave portion can be formed by, for example, inserting a single movable piece into the portion forming the. Therefore, the configuration of the mold for forming the concave portion can be simplified, and it can be manufactured easily and at low cost.

According to a fourth aspect of the present invention, in the strap support structure for a portable device according to any one of the first to third aspects, the fastening member has an outer diameter larger than that of the thick shaft portion at the tip of the thick shaft portion. A small screw rod portion is provided integrally, and when the screw rod portion is fastened to the screw hole of the housing member, the distal end face of the thick shaft portion is pressed against the periphery of the screw hole.

[0013] With the above construction, in addition to the functions and effects of any one of the first to third aspects of the present invention, the step end face corresponding to the boundary between the thick shaft portion and the threaded rod portion has a screw end. When the fastening member is fastened, it can be firmly fastened by pressing against the periphery of the screw hole. Therefore, when the strap is tied to the fastening member, loosening of the fastening between the screw hole and the threaded bar portion can be prevented, and the fastening member can be prevented from falling off.

According to a fifth aspect of the present invention, in the strap support structure for a portable device according to any one of the first to fourth aspects, the fastening member is configured as a tapping screw that cuts a thread groove during a fastening operation. It is characterized by being.

With the above-described structure, in addition to the functions and effects of the invention according to any one of claims 1 to 4, the fastening member is provided in the screw hole which is tapped when fastening the housing member. Since the fastening is performed firmly, the strap supporting structure can be strengthened by preventing the fastening member from being loosened.

According to a sixth aspect of the present invention, in the strap supporting structure for a portable device according to any one of the first to fifth aspects, the housing member is made of a metal outer surface plate made of aluminum or the like. And a back plate.

According to the above construction, in addition to the functions and effects of the invention according to any one of the first to fifth aspects, the fastening member is supported by both the outer surface plate and the outer surface back plate at the both ends. The support structure of the strap in this portion can be strengthened.

According to a seventh aspect of the present invention, in the strap support structure for a portable device according to any one of the first to sixth aspects, a fastening member disposed near a corner of the housing member is used. It is characterized in that a strap is attached.

With the above-described configuration, in addition to the functions and effects of the invention according to any one of claims 1 to 6, the balance when the information terminal device main body is hung by the strap is held. Can be better. Further, the strap can be prevented from obstructing the operation when the information terminal device body is used.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a strap support structure for a portable device according to the present invention will be described below with reference to FIGS.

FIGS. 1 and 2 show a portable information terminal device (so-called PDA personal digital assistance) as a portable device having a strap support structure.

The information terminal device body 20 shown in the figure is provided with an LCD touch panel 22 for display, four scroll buttons 24, and two enter buttons 26 on its surface.

On the flat surface on the back side of the information terminal device main body 20, a cover portion 28 of a battery storage portion and a battery release button 30 are provided.

Further, on one side of the information terminal device main body 20, an insertion opening 34 for the card-shaped recording medium 32 is provided. A power button 3 is provided on the peripheral side of the information terminal device body 20.
6, a touch panel pen 38, a voice memory coding button 40, a connector 42, a headphone jack 44 and the like are arranged.

The insertion port 34, which is the least obstructive part in the operation, of the information terminal device main body 20.
A strap support structure for attaching the strap 46 is formed at the side corner. This strap support structure is configured using a screw component for fixing the exterior.

As shown in FIG. 4, the information terminal device main body 20
Are exterior surface plates 48 and exterior back plates 50 as housing members.
The middle frame member 52 is disposed between the first and second frames.

The touch panel 22 is mounted on the support plate 54 between the exterior surface plate 48 and the middle frame member 52, and the scroll button 24 and the enter button 26 are mounted and incorporated. Further, between the exterior back plate 50 and the middle frame member 52, two printed boards 56 and 58 are superposed, connected by a connector (not shown), and arranged in an integrated state. Also, the exterior back plate 50
A lid 28 is detachably attached to the cover.

On one side of the inner frame member 52 where the insertion opening 34 is attached, a concave portion 6 for a strap support structure is provided at one corner.
0 is formed, and a storage portion 64 for the touch panel pen 38 is formed in the other corner portion.

The concave portion 60 provided at a predetermined corner of the middle frame member 52 is formed as a groove through which a strap is passed by cutting a middle portion in the thickness direction of the corner of the middle frame member 52 into a substantially U-shaped groove shape. Have been. That is, the concave portion 60 is
Small rectangular pieces project from the upper and lower sides in the thickness direction at the corners, and are formed so that groove-shaped concave portions are formed between these rectangular pieces. Also, the upper half 60A and the lower half 60B in the thickness direction of the recess 60 are connected to each other.
Each has a through hole 66 through which a fastening member 68 communicating with the central portion thereof is inserted.

In the vicinity of both corners near the insertion opening 34 side of the exterior back plate 50, through holes 72 and 74 are formed to allow the fastening members 68 and 70 to pass through, respectively. The one through-hole 72 is configured to be continuous with the through-hole 66 of the recess 60 described above. Further, a through hole 76 is formed at a predetermined position of the middle frame member 52 corresponding to the other through hole 74 of the exterior back plate 50 so as to be continuous.

The exterior surface plate 48 has a tap hole 73 (shown in FIG. 3) continuous with the through hole 72 at each corner at both ends on the insertion opening 34 side and a tap continuous with the through hole 74. A hole (not shown) is formed.

In the information terminal device main body 20, a support plate 54 having the touch panel 22 is disposed between the exterior surface plate 48 and the middle frame member 52 so as to overlap with each other.
The printed circuit boards 56 and 58 are overlapped so as to sandwich the printed circuit boards 56 and 58 between the device 2 and the exterior back plate 50. And fastening member 6
8 is fastened from the through hole 72 of the exterior back plate 50 to the tap hole 73 of the exterior surface plate 48 through the through hole 66 while cutting a thread groove. In addition, the fastening member 70 is fastened to the other through hole 74 of the exterior back plate 50 by cutting a screw from the through hole 74 to the tap hole of the exterior surface plate 48 through the through hole 76.

As shown in FIG. 3, each of the fastening members 68 is configured as a so-called stepped screw. That is,
The fastening member 68 has a thick shaft portion 68B formed on a cylinder having a predetermined length from a screw head 68A, and a screw rod portion 68C having a predetermined length is coaxially integrated with a tip of the thick shaft portion 68B. Is formed.

The total length of this thick shaft portion 68B is
The height of the through hole 72 is equal to the sum of the height of the through hole 66 in the concave portion 60 of the middle frame member 52. Further, the length of the screw rod portion 68C of the fastening member 68 is configured to be slightly shorter than the depth of the tap hole 73 serving as a screw hole of the exterior surface plate 48.

As shown in FIG. 3, the fastening member 68 is
2 and the threaded rod portion 68 into the tap hole 73 through the through hole 66.
In the state where C is fastened, the flat end face of the thick shaft portion 68B is pressed against the end surface around the tap hole 73 in the exterior surface plate 48 and screwed so that the fastening of the screw rod portion 68C becomes strong.

When the fastening member 68 is fastened as described above, the thick shaft portion 68B is inserted so as to penetrate substantially the center of the recess 60. Therefore, a part of the thick shaft portion 68B is exposed in the space of the concave portion 60, and the strap support structure is configured.

That is, in the strap support structure thus configured, the strap 46 is attached by tying one end of the strap 46 through the space of the concave portion 60 so as to be wound around the thick shaft portion 68B of the fastening member 68. Therefore, the own weight of the information terminal device main body 20 supported by the strap 46 is received by the portion supporting the fastening member 68.

In this embodiment, the information terminal device (PD
Although the present invention relates to A), the present invention is not limited to this, and it is needless to say that the present invention can be applied to portable electric devices, machines, appliances, and other items.

In the information terminal device main body 20 of the present embodiment described above, when a portion of the middle frame member 52 for forming the concave portion 60 of the molding die is integrally formed with a plastic mold, for example, a single Put the movable piece in the recess 60
Can be formed. Therefore, the configuration of the mold for forming the concave portion 60 can be simplified, and can be manufactured easily and at low cost.

Further, since the fastening member 68 for integrally fastening the exterior surface plate 48 and the exterior back plate 50 is shared with the support shaft of the strap 46, the structure of the support portion of the strap can be simplified. Therefore, the number of parts can be reduced and an inexpensive product can be provided.

Further, by forming the fastening member 68 as a stepped screw, the stepped end face corresponding to the boundary between the thick shaft portion 68B and the threaded rod portion 68C has a tap hole 7 when the screw fastening member 68 is fastened.
3 and can be firmly fastened by pressing. Thus, when the strap 46 is tied to the fastening member 68,
The loosening of the fastening between the tap hole 73 and the threaded rod portion 68C can be prevented, and the fastening member 68 can be prevented from falling off.

The threaded rod 68C of the fastening member 68
By using as the tapping screw, the fastening between the fastening member 68 and the tap hole 73 can be further strengthened, so that the retaining effect can be improved.

When the exterior surface plate 48 and the exterior back plate 50 are made of metal (aluminum or the like), the fastening member 6
8 is firmly supported by the exterior surface plate 48 and the exterior back plate 50 in the state of supporting beams at both ends, so that the support structure of the strap 46 at this portion can be strengthened.

[0044] That is when integrally molded supports for straps in plastic mold as in the prior art, durability of 400 kg / m ² on average there load capacity to between 170 kg / m ² of 630 kg / m ² Whereas, when the exterior surface plate 48 and the exterior back plate 50 are made of aluminum, the through hole 72 and the tap hole 73 are provided.
Since the strength of the portion is sufficiently high, the load resistance when supported by the strap 46 can be increased to the load resistance strength of the fastening member 68. Therefore, the load-bearing strength of the fastening member 68 in the state of supporting beams at both ends is 900 kg / m ² to 1500 kg.
/ M ² can be reinforced to withstand loads up to / m ² .

When the strap supporting structure is provided at the corner of the information terminal device main body 20, the balance when the information terminal device main body 20 is suspended and held by the strap 46 can be improved. Further, the strap can be prevented from obstructing the operation when the information terminal device body 20 is used.

It should be noted that in this specification, a strap is defined to include a chain, a string, and the like in addition to various commonly used straps.

[0047]

Next, another configuration of the strap support structure of the portable device of the present invention will be described with reference to FIG.
In this embodiment, the strap is attached using a fastening member for fastening the two housing members. That is, the first housing member 80 and the second housing member 82
The strap support structure is formed using the fastening member 68 for fastening the strap support.

The first housing member 80 and the second housing member 82 are configured as a surface plate of an exterior, and are formed of a material such as metal such as aluminum or plastic. The first housing member 80 is formed with a concave portion 60 that is formed by cutting out a predetermined corner portion of the first housing member 80 into a substantially U-shaped groove shape and serves as a groove for passing a strap. The concave portion 60 is open to a peripheral side surface of the first housing member 80 and an end surface that is fitted with the second housing member 82. Further, a tap hole 73 is formed at a substantially central portion of the bottom surface 84 in the concave portion 60.

In the first housing member 80 having such a structure, since the concave portion 60 is open to the two end surfaces, the whole including the concave portion 60 can be easily manufactured by means such as integral molding, and the cost can be reduced. Manufacturable.

The second housing member 82 has a through hole 72 at a position coaxially corresponding to the tap hole 73.

As shown in FIG. 5, the fastening member 68 is formed as a so-called stepped screw. That is, the fastening member 68 has a thick shaft portion 68B formed on a cylinder having a predetermined length from the screw head 68A, and a screw rod portion 68C having a predetermined length is coaxially formed at the tip of the thick shaft portion 68B. Are formed integrally.

The total length of the thick shaft portion 68B is the second housing member 8
The height is equal to the sum of the height of the second through hole 72 and the height of the recess 60. The length of the threaded rod portion 68 </ b> C of the fastening member 68 is slightly shorter than the depth of the tap hole 73 serving as a threaded hole of the first housing member 80.

As shown in FIG. 5, the fastening member 68 is fastened to the tap hole 73 through the through hole 72 while cutting the thread groove by the threaded rod 68C. The body member 80 is pressed against the end face around the tap hole 73 and screwed so that the screw rod 68C is fastened securely.

When the fastening member 68 is fastened as described above, the thick shaft portion 68B is inserted so as to penetrate substantially the center of the concave portion 60. Therefore, a part of the thick shaft portion 68B is exposed in the space of the concave portion 60, and the strap support structure is configured.

That is, in the strap supporting structure thus constructed, one end of the strap (not shown) is
The strap is attached so as to be wound around the thick shaft portion 68B of the fastening member 68 through the space 0.

The configuration, operation, and effect of the present embodiment other than those described above are the same as those of the above-described embodiment, and thus description thereof will be omitted.

[0057]

According to the strap supporting structure of the portable device of the present invention, there is an effect that the portable device provided with the strap supporting structure can be easily and inexpensively manufactured, and can be made compact.

[0058]

[Brief description of the drawings]

[0059]

FIG. 1 is an overall perspective view of a main body of an information terminal device having a strap supporting structure for a portable device according to the present invention, as viewed from the back side.

[0060]

FIG. 2 is an overall perspective view of the main body of the information terminal device according to the embodiment of the strap support structure of the portable device of the present invention, viewed from the front surface side.

[0061]

FIG. 3 is an enlarged sectional view of a main part based on line III-III in FIG. 1;

[0062]

FIG. 4 is an exploded perspective view of the information terminal device having the strap support structure of the portable device of the present invention.

[0063]

FIG. 5 is a longitudinal sectional view of a main part showing another embodiment of the strap support structure of the portable device of the present invention.

[0064]

FIG. 6 is a perspective view illustrating a main part of a strap supporting structure of a conventional portable device.

[0065]

[Explanation of symbols]

 Reference Signs List 20 information terminal device main body 46 strap 48 exterior surface plate 50 exterior back plate 52 middle frame member 60 concave portion 66 through hole 68 fastening member 68A head 68B thick shaft portion 68C screw rod portion 70 fastening member 73 tap hole

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4E360 AA02 AB08 AB12 AB42 AB43 AD03 AD05 BA08 EA23 ED02 ED27 GA06 GA52 GB26 GC04 5B019 BA10 5K023 AA07 BB02 LL06 MM25 QQ02

Claims (7)

[Claims] 1. A strap support structure for a portable device, wherein a strap is attached using a fastening member for fastening a housing member. 2. The strap supporting structure according to claim 1, wherein a shaft portion of the fastening member is exposed, and a strap is attached to the shaft portion. 3. The housing member is fastened in a state in which the fastening member is inserted into a through hole formed so as to open into a recess formed in the middle frame member. The strap support structure for a portable device according to claim 1 or 2, wherein: 4. When the fastening member is provided integrally with a screw rod portion having a smaller outer diameter than the thick shaft portion at the tip of the thick shaft portion, and when the screw rod portion is fastened to a screw hole of the housing member, 4. The strap supporting structure for a portable device according to claim 1, wherein a tip end surface of the thick shaft portion is pressed against the periphery of the screw hole. 5. 5. The strap supporting structure for a portable device according to claim 1, wherein said fastening member is configured as a tapping screw for cutting a screw groove during a fastening operation. 6. The portable device according to claim 1, wherein the housing member is composed of an exterior surface plate and an exterior back plate made of metal such as aluminum. Equipment strap support structure. 7. The device according to claim 1, wherein the strap is attached by using the fastening member disposed near a corner of the housing member. Mobile device strap support structure.