JP2001281365A - Case-integrated type wristwatch and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timepiece structure allowing the integration of a large display panel without changing the size of wristwatch case in a case-integrated type wristwatch, and an assembling method thereof. SOLUTION: In this case-integrated type wristwatch which has a windbreak on the upper surface and a back lid on the lower surface, and in which a clock part is integrated from the reverse lid side, the wristwatch case is provided with a recessed part for housing the display panel and horizontally positioning it, a recessed part for housing a circuit board, and a circuit board receiving surface for receiving the circuit board. The recessed part for housing the circuit board has, on one side surface, a stepped part for receiving one end of the lower surface of the circuit board, and the circuit board has a projection part to be engaged with the circuit board receiving recessed part provided on the wristwatch case.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wristwatch with a built-in case and a method of assembling the wristwatch.

[0002]

2. Description of the Related Art FIG. 1 is a bottom view of a conventional wristwatch with a battery and a back cover removed.
FIG. 2 is a sectional view taken along line XX of the case-incorporated wristwatch shown in FIG. A windshield 2 is provided on the upper surface side of the watch case 1, a concave portion 1 a for storing the display panel 3 for horizontal positioning in the center, and a concave portion for storing the circuit board 4 and a battery (not shown) on the lower surface side. 1b. The recess 1b has a circuit board receiving surface 1c for receiving the circuit board 4, and the circuit board 4 is fixed to the wristwatch case 1 with four screws 5. The display panel connection rubber 6 is for making electrical connection between the electrodes of the display panel 3 and the pattern of the circuit board 4, and is compressed and fixed by the display panel 3 and the circuit board 4.

The case-incorporated wristwatch has a process of assembling the display panel 3 into the recess 1a with the upper surface of the watch case 1 facing down, a process of incorporating the display panel connection rubber 6, and a circuit in the recess for accommodating the circuit board 4. It has been assembled by an assembling method including a step of assembling the board 4 and a step of fixing four portions of the circuit board with screws 5. The post-process includes a battery assembling process, a back cover assembling process, etc., but is omitted.

[0004]

As the functions of wristwatches have become more multi-functional, it is desired to enlarge the display surface in order to display many functions. The size of the display panel is restricted by the arrangement of the screws for fixing the circuit board, and the size of the watch case cannot be effectively utilized.

It is an object of the present invention to provide a wristwatch structure in which a large display panel can be incorporated without changing the size of the wristwatch case, and a method of assembling the wristwatch.

[0006]

Means for Solving the Problems In a case-incorporated wristwatch having a windshield on the upper surface and a watch case having a back cover on the lower surface and incorporating a clock component from the back cover side, a display panel is housed in the watch case. A recess for positioning in the horizontal direction, a recess for housing the circuit board and a circuit board receiving surface for receiving the circuit board, and a step for receiving one end of the lower surface of the circuit board on one side of the recess for housing the circuit board. A case-incorporated wristwatch provided with a projection that engages with a circuit board receiving recess provided on a wristwatch case.

[0007] At least a step of assembling a display panel with the upper side of a wristwatch case having a windshield on the upper surface and a back cover on the lower side facing down, a step of assembling display panel connection rubber, and a step of mounting a recess for accommodating a circuit board. A step of obliquely inserting one end of the circuit board into a step receiving one end of a lower surface of the circuit board provided on one side to engage a projection provided on the circuit board with the recess for receiving the circuit board; The method includes assembling a case-incorporated wristwatch, comprising the steps of: sliding the portion into a circuit board receiving recess and mounting it on the circuit board receiving surface; and joining the other end of the circuit board to a watch case.

[0008]

FIG. 3 is a bottom view of a case-incorporated wristwatch showing an embodiment of the present invention, in which a battery and a back cover are removed. FIG. 4 is a sectional view taken along the line YY of the wristwatch with a built-in case shown in FIG. 3, and FIG. 5 is a sectional view taken along the ZZ line of the wristwatch with a built-in case shown in FIG.

A windshield 11 is provided on the upper surface side of the watch case 10, a concave portion 10 a for accommodating the display panel 12 and positioning horizontally in the center, and a circuit board 13 on the lower surface side.
And a recess 10b for accommodating a battery (not shown). The recess 10 b has a circuit board receiving surface 10 c for receiving the circuit board 13, and the circuit board 13 is fixed to the wristwatch case 10 with two screws 14. The display panel connection rubber 15 is for making electrical connection between the electrodes of the display panel 12 and the pattern of the circuit board 13.
And the circuit board 13 for compression.

A stepped portion 10 receiving one end 13c of the lower surface of the circuit board 13 on one side surface of the recess 10b for accommodating the circuit board 13
d, and the circuit board 13 is provided with projections 13b, 13a that engage with the circuit board receiving recesses 10e, 10e ′ provided in the watch case 10. Circuit board receiving recess 10
e, 10e 'and the protrusions 13b, 13a of the circuit board 13
Thus, the watch case 10 and the circuit board 13 are positioned in the horizontal direction.

Next, the assembling method of the present invention will be described. The display panel 12 is assembled with the upper surface side of a watch case 10 having a windshield 11 on the upper surface and a back cover (not shown, unnecessary at the time of assembly) on the lower surface facing down. The display panel connection rubbers 15 and 15 'are incorporated. In the embodiment, unlike the conventional example, they are arranged on both sides (left and right in FIG. 3) of the watch case 10. One side surface 10b 'of the concave portion 10b for housing the circuit board 13
One end 13c of the circuit board 13 is inserted obliquely into a step 10d that receives one end 13c of the lower surface of the circuit board 13 provided on the circuit board 13 so that the projections 13a and 13b provided on the circuit board 13 are recessed 10e 'and 10e for receiving the circuit board. To be engaged. FIG. 6 shows a stepped portion 10 which is provided on one side surface 10b 'of the concave portion 10b for accommodating the circuit board 13 and receives one end 13c of the lower surface of the circuit board 13.
FIG. 13 is a cross-sectional view of a state in which one end 13c of the circuit board 13 is inserted obliquely into d, and protrusions 13a and 13b provided on the circuit board 13 are engaged with the circuit board receiving recesses 10e 'and 10e. The protrusions 13a and 13b of the circuit board 13 are slid into the circuit board receiving recesses 10e 'and 10e, and
Is placed on the circuit board receiving surface 10c. The other end 13 d of the circuit board 13 is joined to the watch case 10. The case built-in wristwatch is assembled by the above steps.

On the circuit board insertion side of the display panel connection rubbers 15 and 15 ′, protrusions 10 f provided on the wristwatch case 10 are provided.
It is positioned by 10 g. Projection 10f, 10g
In addition, one end 13c of the circuit board 13 is chamfered so as not to interfere when the circuit board 13 is inserted.

A part of the upper surface of the projections 13a, 13b of the circuit board is formed in the recess 1 for receiving the circuit board of the wristwatch case 10.
Projection receiving surfaces 10h, 10e provided on the top of 0e ', 10e
i to prevent the circuit board 13 from dropping into the display panel 12 side. In addition, the protrusion 13 of the circuit board
Since a and 13b cannot be assembled if they are too close to the insertion side 13c of the circuit board 13, it is preferable to provide them at a predetermined distance from the step 10d that receives the lower end 13c of the circuit board 13.

[0014]

According to the present invention, the circuit board can be fixed by fixing only one end of the circuit board to the wristwatch case, and a large display panel can be adopted without increasing the size of the wristwatch case.

When the circuit board is fixed with screws, the number of screws can be reduced, so that the number of parts and the number of assembly steps can be reduced.

According to the structure and the assembling method of the present invention, the positioning of the wristwatch case and the circuit board is automatically performed, and the assembling can be facilitated.

[Brief description of the drawings]

FIG. 1 is a wristwatch with a built-in case according to the prior art;
Bottom view with battery and back cover removed

FIG. 2 is a sectional view taken along line XX of the wristwatch with a built-in case shown in FIG.

FIG. 3 is a case-incorporated wristwatch showing one embodiment of the present invention, and is a bottom view with a battery and a back cover removed.

FIG. 4 is a sectional view taken along the line YY of the wristwatch with a built-in case shown in FIG. 3;

FIG. 5 is a sectional view taken along the line ZZ of the wristwatch with a built-in case shown in FIG. 3;

FIG. 6 is a perspective view of the circuit board receiving recess provided on one side of the recess for accommodating the circuit board, the projection provided on the circuit board by obliquely inserting one end of the circuit board into a step receiving the lower end of the circuit board; Sectional view of the state where it was engaged with

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 watch case 1a recess 1b recess 1c circuit board receiving surface 2 windshield 3 display panel 4 circuit board 5 screw 6 display panel connection rubber 10 watch case 10a recess 10b recess 10b 'side recess 10c circuit board receiving surface 10d step 10e circuit board receiving Recess 10e ′ recess for receiving a circuit board 10f projection 10g projection 10h projection receiving surface 10i projection receiving surface 11 windshield 12 display panel 13 circuit board 13a projection 13b projection 13c circuit board end 13d circuit board other end 14 screw 15 display panel Connection rubber 15 'Display panel connection rubber

Claims (2)

[Claims] 1. A case-incorporated wristwatch having a windshield on an upper surface and a watch case having a back cover on a lower surface, and incorporating a watch part from a back cover side of the watch case. A recess for positioning the circuit board, a recess for accommodating the circuit board, and a circuit board receiving surface for receiving the circuit board; and a step for receiving one end of the lower surface of the circuit board on one side surface of the recess for housing the circuit board. A case-integrated wristwatch provided with a projection for engaging a circuit board receiving recess provided in a wristwatch case. 2. A process for assembling a display panel with at least an upper surface side of a wristwatch case having a windshield on the upper surface and a back cover on the lower surface, a process of installing a display panel connection rubber, and housing a circuit board. A step of obliquely inserting one end of the circuit board into a step receiving one end of a lower surface of the circuit board provided on one side surface of the recess, and engaging a projection provided on the circuit board with the recess for receiving the circuit board; A step of sliding the protrusion of the circuit board into the recess for receiving the circuit board and mounting the circuit board on the circuit board receiving surface, and a step of joining the other end of the circuit board to the watch case. .