JPH11142537A - Positioning structure of dial ring and display equipment with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the positioning structure of a dial ring without the need for providing a projection part in a dial to position the dial ring in display equipment with a display part and the dial ring. SOLUTION: On the bottom surface of a dial ring 13, a tool insertion groove 13c is formed in one piece at a position corresponding to a tool insertion groove 11b of a dial pad ring 11, and, furthermore, an engagement projection 13d with a circular section projecting from the both end parts of the orbital direction of the tool insertion groove 13c is formed in one piece. The engagement projection 13d is forced in the tool insertion groove 11b of the dial pad ring 11, is engaged to a step surface 11c facing toward the inside of the tool insertion groove 11b and a side surface 11d being formed at the both ends of the orbital direction of the tool insertion groove 11b, and positions the dial ring 13 in a diameter direction and the orbital direction for the dial pad ring 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dial ring positioning structure and a display device having the same.

[0002]

2. Description of the Related Art Conventionally, in a wristwatch, which is a kind of display device, a dial plate as a display plate is installed above a movement via a dial plate receiving ring (middle frame), and an outer edge of the dial plate is dial-ringed. And a display unit structure fixed by pressing.

FIG. 5 is a schematic plan view showing a structure of an outer edge of a display portion of such a wristwatch. Here, a positioning leg (not shown) protrudes from the back of the dial 12, and the positioning leg is pressed into and fixed to the main plate of the movement (not shown), and a dial receiving ring on which the back of the dial 12 fixes the movement. 11 abuts. Dial 1
The outer ring 2 is incorporated in a body (not shown) so that the dial ring 13 is pressed from above. The surface 13a of the dial ring 13 may be plain or may have a scale corresponding to the dial 12 printed thereon.

Here, the surface 13a of the dial ring 13
When a display corresponding to the dial 12 such as a graduation is made, it is necessary to position the dial ring 13 with respect to the dial 12 indicated by a dashed line in the figure.
2, a projection 12a is formed on the outer periphery of the dial ring 2, an engagement groove 13b corresponding to the projection 12a is formed on the bottom surface of the dial ring 13, and the projection 12a is fitted into the engagement groove 13b. 13 in the circumferential direction.

[0005] On the surface of the dial receiving ring 11 shown by a two-dot chain line, there are provided two tool insertion grooves 11a for inserting a tool tip when removing the dial 12 with a tool tip such as a flathead screwdriver. Is formed.

[0006]

However, when the dial ring 13 is to be positioned, as described above, the dial 1 is not used.
Since it is necessary to form the protruding portion 12a on the outer periphery of the dial 2, it is necessary to form the dial 12 with a special mold,
Further, since a dial cannot be shared with a wristwatch having no dial ring or a wristwatch having a dial ring with no scale displayed, there is a problem in that the manufacturing cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device having a display unit and a dial ring without having to provide a dial with a projection for positioning the dial ring. An object of the present invention is to provide a dial ring positioning structure.

[0008]

In order to solve the above-mentioned problems, the present invention takes measures including a display plate installed on a display unit, a dial ring abutting from above on an outer edge of the display plate, A support for directly or indirectly positioning and supporting the plate from below, and a dial ring positioning structure provided with an engaging portion on the bottom surface of the dial ring to be engaged with the support in a circumferential direction. .

According to this means, the dial is provided on the bottom surface of the dial ring in contact with the outer edge of the display plate, the engagement portion being engaged with the support for positioning and supporting the display plate in the circumferential direction. Since the ring can be indirectly positioned in the circumferential direction with respect to the display plate, it is not necessary to provide a positioning shape that extends over the outer periphery of the display plate. It is possible to configure so that they can be shared, and it is possible to reduce the manufacturing cost.

Here, it is preferable that the engaging portion also engages with the support in the radial direction.

According to this means, since the engaging portion is also engaged with the support in the radial direction, the dial ring can be completely positioned in a plane with respect to the support. Assembly work can be facilitated.

It is preferable that a tool insertion groove for removing the display plate is formed in the support, and the engagement portion is engaged with the tool insertion groove.

According to this means, since the engaging portion is engaged with the tool insertion groove formed in the support, it is necessary to separately form a structure for engaging with the engaging portion on the support. Not
Since the manufacturing cost can be reduced, and only the tool insertion groove is formed on the support, equipment without dial ring,
Alternatively, the support can be shared without any trouble even in a device in which the positioning of the dial ring is not required and the engagement portion is not provided.

In this case, it is preferable that a pair of the engaging portions are provided at positions corresponding to the both ends in the circumferential direction in the tool insertion groove so as to be separated from each other.

According to this means, since a pair of mutually separated engaging portions are engaged with both circumferential ends of the tool insertion groove, positioning in the circumferential direction is completely performed. At the same time, since there is a gap between the pair of engagement portions, the tool insertion groove can be used with the dial ring attached. Here, another tool insertion groove for removing the dial ring may be formed between a pair of engagement portions of the dial ring.

The dial ring positioning structure described in each of the above means can be applied to various display devices. Display devices include watches, watches, measurement and display devices,
In addition to an original display device such as an image display device, it includes various devices such as an electronic device having a display unit attached thereto.

In the above means, not only the engagement portion of the dial ring and the support member may be engaged but also press-fitted and fixed to each other. In this case, a tool for removing the dial ring may be used. Preferably, an insertion groove is provided on the bottom surface of the dial ring.

In the case of a timepiece, the above-mentioned support corresponds to a component including a dial receiving ring or a middle frame and a movement or a main plate.

[0019]

Next, an embodiment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall schematic configuration diagram showing an embodiment of a dial ring positioning structure and a display device according to the present invention. In this figure,
The right side of the dash-dot line at the center is a 6 o'clock section of the wristwatch,
The left side of the one-dot chain line shows a cross section of the wristwatch at 3 o'clock. The present embodiment shows an example in which the present invention is applied to a structure for positioning a dial ring which comes into contact with a dial as a display plate provided in a display unit of a wristwatch.

A dial receiving ring (middle frame) 11 is attached and fixed to the movement 10, and a dial 12 is arranged on the dial receiving ring 11. A positioning leg 12b is formed on the rear surface of the dial 12 so as to project therefrom. The positioning leg 12b is pressed into the main plate of the movement 10. The outer edge of the dial 12 is pressed and fixed by a dial ring 13. Dial ring 1
A printed layer 14 for displaying a scale that matches the time display of the dial 12 is formed on the front surface 13a of the dial 3.

The dial ring 13 is pressed relatively downward by the body 1 so that the dial 12 positioned with respect to the main plate of the movement 10 can receive the dial ring 11.
And the dial ring 13 are sandwiched from above and below. The cover glass 2 is fixed to the body 1 via a packing or the like, and a back cover 3 is attached to the back side of the body 1.

FIG. 2 shows the dial ring 13 of the present embodiment.
FIG. 2 is a plan view showing a planar shape of a dial 12 shown by a dashed line in FIG.
And are written together. FIG. 3 is a bottom view of the dial ring 13.

On the surface of the dial receiving ring 11, tool insertion grooves 11a and 11b for removing the dial 12 are formed at two positions, that is, at 12 o'clock and at 6 o'clock. The tool insertion groove 11a is exactly the same as the conventional example, but the tool insertion groove 11b has a dial ring 1 as described later.
Step surface 1 facing inward for radially positioning 3
1c is formed.

On the bottom surface of the dial ring 13, a tool insertion groove 1 for removing the dial ring 13 at a position corresponding to the tool insertion groove 11 b of the dial receiving ring 11.
3c are integrally formed, and furthermore, engagement protrusions 13d having a circular cross section protruding from both circumferential ends of the tool insertion groove 13c are integrally formed. This engagement projection 13
d is a stepped surface 11c which is press-fitted into the tool insertion groove 11b of the dial receiving ring 11 and faces the inside of the tool insertion groove 11b.
And the side faces 11d formed at both ends in the circumferential direction of the tool insertion groove 11b, thereby positioning the dial ring 13 in both the radial direction and the circumferential direction with respect to the dial receiving ring 11. I have.

The above-mentioned engagement projection 13d and tool insertion groove 11b
FIG. 4 is a cross-sectional view of the engaging portion of the display unit viewed from the center of the display unit in the circumferential direction. Basically, the dial receiving ring 11 and the dial ring 13 do not engage with each other in the vertical direction in order to sandwich the dial 12 indicated by the dotted line in the vertical direction. As shown in (1), the gap is set between the surface of the dial receiving ring 11 and the bottom of the dial ring 13 at the time of assembly. However, since the engagement projection 13d of the dial ring 13 engages with both ends of the tool insertion groove 11b of the dial receiving ring 11, the dial ring 13 is positioned in the circumferential direction with respect to the dial receiving ring 11, and Since the receiving ring 11 is positioned with respect to the movement 10, the dial 12 and the dial ring 13, which are press-fitted into the main plate of the movement 10, are indirectly positioned.

The positioning of the dial ring 13 in the radial direction is not always necessary because it is performed to a certain extent by a body (watch case) (not shown). By forming the surface 11c, the dial ring 13 can be positioned in the radial direction. In this case, the movement 10, the dial receiving ring 11, the dial 12, and the dial ring 13 can be positioned relative to each other, so that the work at the time of assembling the timepiece is facilitated and automation is also easy. In addition, another step surface is formed on the dial receiving ring 11 on the side opposite to the step surface 11c, and the engagement protrusion 13 of the dial ring 13 is provided between the two step surfaces.
By press-fitting d, the dial ring 13 can be completely fixed also in the radial direction.

In the present embodiment, the dial ring 1
The pair of engaging projections 13d which are separated from each other are engaged with both ends of the tool insertion groove 11b of the dial receiving ring 11, so that the engaging projections 13d may prevent insertion of a tool when removing the dial. And a pair of engaging projections 13
A tool insertion groove 13c for removing the dial ring 13 can also be formed between d.

In the present embodiment, since there is no need to provide a protrusion on the outer periphery of the dial 12 as in the prior art, a wristwatch without a dial ring or a wristwatch without a display corresponding to a dial such as a scale on the dial ring can be used. However, since each part can be shared without any trouble, the manufacturing cost can be reduced.

Further, the engagement protrusion 1 of the dial ring 13
3d is pressed into the tool insertion groove 11b of the dial receiving ring 11, so that the movement 1
Since the dial 0, the dial receiving ring 11, the dial 12, and the dial ring 13 can be mutually held, the assembling work can be further facilitated. However, since the positioning between the dial ring 13 and the dial 12 only needs to maintain visual accuracy, the engagement projection 13d and the tool insertion groove 1
1b may be positioned by simple engagement instead of press-fitting.

Further, in the above embodiment, the engagement projection 13d of the dial ring 13 is engaged with the dial receiving ring 11, but the engagement portion is directly engaged with the movement 10 itself or the main plate. May be. That is, the engaging portion may be engaged with the support that directly or indirectly positions the dial.

In the embodiment described above, an example in which the present invention is applied to a wristwatch has been described. However, the present invention is not limited to a wristwatch, but may be any electronic device or any other display as long as the device has a display unit. It can be applied to equipment. Here, the display device is not limited to a device having a display function as a main function, but includes all devices additionally provided with a display unit.

[0032]

As described above, according to the present invention, on the bottom surface of the dial ring which abuts on the outer edge of the display panel, the engaging portion for circumferentially engaging the support for positioning and supporting the display panel. By providing the dial ring, the dial ring can be indirectly positioned in the circumferential direction with respect to the display panel. Therefore, for example, it is not necessary to provide a positioning shape that extends over the outer periphery of the display panel. Therefore, it is possible to configure such that devices that do not have the same can be shared, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view schematically illustrating a positioning structure of a dial ring and a structure of an embodiment of a display device according to the present invention.

FIG. 2 is a schematic plan view showing the structure of the dial ring in the embodiment together with a dial and a dial receiving ring.

FIG. 3 is a schematic bottom view of the dial ring in the embodiment.

FIG. 4 is an enlarged sectional view showing an engagement portion between the dial receiving ring and the dial ring in the embodiment.

FIG. 5 is a schematic plan view showing the structure of a dial ring of a conventional watch together with a dial and a dial receiving ring.

[Explanation of symbols]

 Reference Signs List 10 Movement 11 Dial receiving ring 11a, 11b Tool insertion groove 11c Step surface 11d Side surface 12 Dial 13 Dial ring 13a Surface 13c Tool insertion groove 13d Engagement projection 14 Print layer

Claims (5)

[Claims] 1. A display device comprising: a display plate provided on a display unit; a dial ring contacting an outer edge of the display plate from above; and a supporter for directly or indirectly positioning and supporting the display plate from below, A positioning structure for a dial ring, comprising an engagement portion on a bottom surface of the dial ring, the engagement portion being engaged with the support in a circumferential direction. 2. The dial ring positioning structure according to claim 1, wherein the engaging portion is also radially engaged with the support. 3. The support body according to claim 1, wherein a tool insertion groove for removing the display plate is formed in the support, and the engaging portion is engaged with the tool insertion groove. Positioning structure of the dial ring configured. 4. The dial ring positioning structure according to claim 3, wherein the engagement portions are provided in a pair at positions corresponding to the both ends in the circumferential direction in the tool insertion groove so as to be separated from each other. 5. A display device having the dial ring positioning structure according to claim 1.