JP2002041182A - Closed structure for wrist-portable information equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closed structure of wrist-portable information equipment in which water-proofing can be carried out. SOLUTION: A packaging fitting groove 5 and an engaging protrusion 3 are formed so as to be separated from each other on a back cover 2. The packaging fitting groove 5 is formed around the outer periphery of the back cover 2. Then, an engaging groove 4 is notched in a main body 1. A packaging 6 is adopted as a water-proofing means, and the packaging 6 is fit into the packing fitting groove 5, and the part projected from the engaging groove 4 is adhered so as to be interposed by a main body drum part 7 vertically formed in the main body 1. Then, the engaging protrusion 3 of the back cover 2 is engaged with the engaging groove 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a closed structure of a main body and a back cover of an arm type information device.

[0002]

2. Description of the Related Art A wristwatch is a typical example of a device that is conventionally carried on an arm. Recently, a waterproof function has been added to most wristwatches. As shown in FIG. 7, a gasket 23 which is a thin plate-like packing is placed on the end face of the back cover 21 on the side of the watch body 22. The gasket is sandwiched between the back cover and the main body by fixing the back cover 21 with screws. This means has been used because the size of the electronic circuit unit or the movement unit for driving the timepiece itself is fixed to some extent, and the joint between the main body and the back cover is generally flat. is there.

[0003] The wrist portable information device is not the above-mentioned wristwatch, but is an information processing device developed by paying attention to the excellent portability of the wristwatch, and since its shape is similar to a wristwatch,
Conventional joining and sealing technologies have been used for the main body and the back cover as they are.

[0004]

However, according to the prior art, if the joint between the main body and the back cover is curved or if the joint has a protruding portion, the gasket will not be properly clamped. There was a problem. The wrist portable information device is characterized by its multi-functionality and high functionality,
Because of the necessity of a compact shape, various shapes are conceivable, and the housing is likely to have a special shape.
There has been a demand for a method of appropriately performing a waterproof treatment without depending on the shape of the joint between the main body and the back cover.

[0005] The present invention has been made in view of the above, and is capable of appropriately performing a waterproof process without being affected by the shape of the joint between the main body of the wrist portable information device and the back cover. It is an object of the present invention to provide a closed structure.

[0006]

In order to achieve the above-mentioned object, a closed structure of a wrist portable information device according to the present invention comprises:
In the structure in which the back cover of the wrist portable information device is sealed to the body-side body, a packing fitting groove is formed around the outer periphery of the back cover concealed by the body, and packing is formed by the packing fitting groove and the body. It is one that was pinched. The packing fitting groove that goes around the outer peripheral portion of the back cover may be straight, that is, may be engraved on the same horizontal plane, or may be curved,
That is, it may be engraved so as to draw a curve on the outer peripheral portion of the back cover.

In the above-mentioned closed structure, a structure may be provided in which the body and the back cover bite below the packing fitting groove. In this case, a thin portion may be formed between the packing fitting groove of the body and the biting structure, or a thin portion may be formed below the biting structure of the back cover.

In the above-mentioned closed structure, the body and the back lid may be fixed below the packing fitting groove by screws.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a closed structure of a wrist portable information device according to the present invention will be described in detail with reference to the drawings. The present invention is not limited by the embodiment.

FIG. 1 is a cross-sectional view of a wrist portable information device according to a first embodiment of the present invention. The wrist portable information device A is mainly composed of three members.
That is, it is composed of the main body 1, internal electronic circuits and the like (not shown), and the back cover 2. In this figure, the right and left sides of the back cover 2 have different heights, which will be described later. First, the packing fitting groove 5, the packing 6, and the bite of the main body 1 and the back cover 2 are provided. The configuration of the protrusion 3 and the bite groove 4 will be described.

FIG. 2 is an enlarged view of the vicinity of the right biting projection 3 in FIG. The back cover 2 is provided with a packing fitting groove 5 and a biting projection 3. On the other hand, a biting groove 4 is formed in the main body 1. The packing 6 is fitted in the packing fitting groove 5, and a portion protruding from the biting groove 4 is sandwiched between the packing fitting groove 5 and the body 7 formed vertically in the main body 1.

Next, the order of sealing the main body 1 and the back cover 2 will be described. First, the packing 6 is fitted into the packing fitting groove 5 before sealing. In this state, the back cover is fitted into the main body 1 and the elastic deformation of the material of the main body 1 or the back cover 2 causes
The biting projection 3 is engaged with the biting groove 4.

FIG. 3 is a perspective view of the back cover 2 as viewed obliquely from above. As shown in the figure, the packing 6 is fitted around the outer peripheral portion of the back cover 2 concealed by the body 7. Further, in the drawing, the biting projections 3 are protruded only on both sides in the longitudinal direction of the back cover 2. However, if the elastic region of the material is large, the biting projections 3 may be protruded so as to go around the outer periphery of the back cover 2. . Further, if the elastic region of the material of the back cover 2 is small, the length of the projection 3 may be reduced.

Further, in the case of the back lid 2 having a substantially square shape as shown in FIG. 3, the biting projection 3 may be provided on only one arbitrary side. In this case, the packing 6 sandwiched on the side opposite to the side having the biting projection 3 always presses the biting projection 3 on the side facing the biting groove 4.

In the description of FIG. 1 mentioned above, the fact that the height of the back cover 2 is different between the left and right sides of the paper has been mentioned. However, as shown in FIG. This is an example of the case in which it is performed, and is formed for some reason in design. Even in such a case, the sealing structure according to the first embodiment can completely seal the main body 1 and the back cover 2 by fitting the packing 6 into the side surface of the back cover 2.

FIG. 4 is a perspective view when the packing fitting groove of the back cover 2 is cut in a curved shape. The packing 6 is fitted along the packing fitting groove, and goes around the outer periphery of the back cover 2 in a curved line so as to avoid the obstacle 8. Here, obstacle 8
Means that the back cover 2 must be formed for some reason in the design. For example, the protrusions need to be provided to engage the electronic circuit unit inside the main body 1 when the back cover 2 is sealed to the main body 1.

As described above, in the sealed structure of the wrist portable information device according to the first embodiment, since the packing 6 goes around the outer peripheral portion of the back cover 2, the gap formed between the main body 1 and the back cover 2 is completely closed. Prevents water from entering the arm portable information device from outside to inside. In the above-mentioned closed structure, the back cover 2
Is waterproofed by the packing 6 on the outer peripheral portion of the main body 1, even if the cross-section of the back cover 2 of the wrist portable information device on the side of the main body 1 is three-dimensionally undulated, there is no influence.
And the back cover 2 can be brought into close contact with each other. Also, back cover 2
Even if there is an obstacle 8 on the outer peripheral portion, the packing groove 5 surrounding the outer peripheral portion can be engraved in a curved shape.
The packing 6 can be fitted and arranged so as to avoid the obstacle 8, so that water can be prevented from entering the inside of the apparatus. Further, since a general-purpose O-ring or the like can be used for the packing 6, the sealing structure according to the first embodiment can be reduced in cost.

(Embodiment 2) FIG. 5 shows a bite portion of a closed structure according to Embodiment 2 of the present invention. FIG. 5A shows the back cover 2 for facilitating elastic deformation of the body trunk 11 when the back cover 2 is bitten on the main body 1.
The slit 12 is provided above the biting projection 3 of FIG. As a result, the main body 11 has a thin portion.

FIG. 5 (b) shows a slit 10 below the biting projection 3 of the back cover 9 to make the back cover 9 easily elastically deform when the back cover 9 is bitten on the main body 1. Is provided. Thereby, the back cover 9 has a thin portion. Therefore, in the sealed structure shown in FIGS. 5A and 5B, both slits 10 and 12 are provided, these serve as hinges, and the back lids 2 and 9 are connected to the main bodies 1 and 1.
Elastic deformation is likely to occur when biting 1.

Generally, the bite structure is engaged by utilizing the elastic deformation of members constituting the structure. Therefore, when the arm portable information device or the like has a bite structure,
One or both of the arm portable information device main body and the back cover are engaged by elastic deformation. Since the frame of the arm portable information device body is generally of an integral structure,
When the device main body is elastically deformed at the time of engagement, portions other than the portion where the bite structure of the main body is provided, for example, the portion supporting the glass on the upper surface are also integrally deformed, and the glass can be broken. There is.

However, according to the second embodiment of the present invention, the biting structures 3, 4 are provided below the packing fitting groove 5.
Therefore, if a thin portion is provided between the packing fitting groove 5 and the biting groove 4, the thin portion constitutes a hinge, and only a portion below the hinge portion is elastically deformed, so that glass or the like can be damaged. Absent.

Further, by forming a thin portion below the biting structures 3 and 4 of the back cover 9, the arm portable information device main body is elastically deformed when the main body and the back cover 9 are engaged. The back cover 9 can be bitten onto the main body without the need. Accordingly, the main body 1 and the back cover 9 can be sealed without deforming or losing portions other than the biting portion of the main body 1 such as an information device operation button portion and a glass support portion as a display portion. After the main body 1 and the back cover 9 are stuck, the elastic deformation of the back cover 9 returns to its original state,
Is securely sandwiched between the main body 1 and the back cover 9 to enable waterproofing. Further, according to the present invention, elastic deformation at the time of biting becomes easy regardless of the material of the main body and the back cover.

(Embodiment 3) FIG. 6 is a sectional view of a closed structure according to Embodiment 3 of the present invention. The closed structure according to the third embodiment is characterized in that the back cover is fixed to the main body with screws. That is, in FIG. 6A, a screw is screwed in the lower part of the packing fitting groove 5 in the horizontal direction, and
FIG. 3 is a cross-sectional view of the wrist portable information device when the body and the main body 15 are fixed. FIG. 6B shows a case in which the back cover 16 has a flange portion 17.
FIG. 7 is a cross-sectional view of the wrist portable information device when the flange portion 17 and the main body 18 are fixed with screws in a vertical direction.

In the closed structure according to the third embodiment,
Since the position where the packing 6 is clamped and the position of the screw fixing portion are separated, even when the packing fitting groove 5 is curved in a curved manner, it does not affect the fixing portion of the screw 13 at all, and is lower than the packing 6 clamping position. If so, it can be screw-fixed to a necessary part according to the shape of the wrist portable information device. As long as the screw 13 is not loosened even if the screw 13 is loosened, the packing 6 is attached to the wrist portable information device main bodies 15, 18 and the back cover 1
Since it is sandwiched between the first and second halves 4 and 16, it is possible to prevent water from entering the inside.

[0025]

As described above, in the closed structure of the wrist portable information device according to the present invention, the packing completely surrounds the outer peripheral portion of the back cover, so that the gap is completely closed, and from outside the wrist portable information device. It is possible to prevent water from entering the inside. Therefore, it is possible to prevent a short circuit or other trouble of the electronic circuit inside. Further, a general-purpose packing member such as an O-ring may be fitted into the packing fitting groove as it is, and there is no need to facilitate a special packing member, and the cost can be reduced.

Further, in the hermetically sealed structure of the wrist portable information device according to the present invention, since the packing goes around the outer periphery of the back cover, the gap is completely closed, and water permeates from outside to inside of the wrist portable information device. Is the same as in the closed structure. According to the present invention, furthermore, since the outer peripheral portion of the back cover is subjected to waterproof treatment by packing, even if the body side cross section of the back cover of the wrist portable information device has a three-dimensional shape,
The main body and the back cover can always be brought into close contact. Further, even when there is an obstacle such as a screw hole in the outer peripheral portion of the back cover, a packing groove surrounding the outer peripheral portion can be formed, so that water can be prevented from entering the inside of the device.

According to the closed structure of the wrist portable information device of the present invention, the position of the packing fitting groove and the position of the biting structure are separated, so that the position and shape of the packing fitting groove have no effect on the biting structure. And the fitting of the main body of the wrist portable information device and the back cover becomes extremely easy. That is, the packing fitting work at the maker factory can be performed without worrying about the biting structure, and when replacing the battery, the user or the technician can engage with the main body and the back cover without worrying about the waterproof structure. Can be performed.

Further, in the closed structure of the wrist portable information device according to the present invention, since the bite structure is provided below the packing fitting groove, if a thin portion is provided below the packing fitting groove, the hinge can be used as a hinge. Since only the lower part of the hinge portion is elastically deformed, glass and the like are not lost.

Further, in the closed structure of the wrist portable information device according to the present invention, the back cover is formed without elastically deforming the wrist portable information device main body by forming a thin portion below the biting structure of the back cover. Can be eaten on the body. This allows
The main body and the back cover can be sealed without deforming or losing portions of the main body other than the bite portion, for example, the information device operation button portion, the glass support portion as the display portion, and the like. Also, after the main body and the back cover have been stuck, the elastic deformation of the back cover returns to its original state, and the packing is securely sandwiched between the main body and the back cover, making it waterproof. Becomes Further, according to the present invention, elastic deformation at the time of biting is facilitated regardless of the material of the main body and the back cover.

Further, in the closed structure of the wrist portable information device according to the present invention, since the position of the packing fitting groove and the position of the screw fixing portion are separated, the position and shape of the packing fitting groove do not affect the screw fixing portion at all. If it is below the packing insertion hole, it can be fixed to a necessary part according to the shape of the wrist portable information device. Further, unless the screw is loosened, the packing is sandwiched between the wrist portable information device main body and the back cover unless the screw is completely screwed out, so that water can be prevented from entering the inside.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a structure of a wrist portable information device according to a first embodiment of the present invention.

FIG. 2 is an enlarged view showing a cross section near a right biting projection shown in FIG. 1;

FIG. 3 is a perspective view showing a state when the back cover is viewed from obliquely above.

FIG. 4 is a perspective view showing a state where the packing fitting groove of the back cover is engraved in a curved shape.

FIG. 5 is a cross-sectional view showing a biting portion of the closed structure according to the second embodiment of the present invention.

FIG. 6 is a sectional view showing a closed structure according to a third embodiment of the present invention;

FIG. 7 is an exploded view showing a structure of a timepiece for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Back cover 3 Biting projection 4 Biting groove 5 Packing fitting groove 6 Packing 7, 11 Main body 8 Obstacle 9 Back lid 10, 12 Slit 13 Screw

Claims (6)

[Claims] 1. A sealing structure for an arm portable information device for sealing a back cover of an arm portable information device to a body side body, wherein a packing fitting groove surrounding the outer periphery of the back cover concealed by the body is formed. A sealing structure for a wrist portable information device, wherein packing is sandwiched between the packing fitting groove and the body. 2. The hermetically sealed structure for an arm-portable information device according to claim 1, wherein the packing fitting groove goes around the outer periphery of the back cover concealed by the body in a curved line. 3. The hermetically sealed structure for an arm-portable information device according to claim 1, further comprising a structure in which the body and the back cover bite below a packing fitting groove. Further, the body and the back cover have a biting structure below the packing fitting groove, and a thin portion is formed between the packing clamping position of the body and the biting structure. The hermetically sealed structure for an arm portable information device according to claim 1 or 2, wherein: 5. The apparatus according to claim 1, wherein the body and the back cover have a biting structure below the packing fitting groove, and a thin portion is formed below the biting structure of the back cover. Item 3. A sealed structure for an arm portable information device according to Item 1 or 2. 6. The hermetically sealed structure for an arm portable information device according to claim 1, wherein the body and the back cover are fixed below the packing fitting groove by screws.