JPS6110222Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing member for a display panel and a dial in an electronic timepiece.

Conventionally, in electronic watches, liquid crystal display panels, LSI
In order to house the central part of a substrate such as a board incorporating a crystal resonator, etc., a fitting hole is provided in a frame made of synthetic resin, etc., and a liquid crystal display panel is set inside the frame. It is known that the liquid crystal display panel is fixed by holding the upper surfaces of the opposing edges of the liquid crystal display panel on both sides using fixing members attached to the upper surfaces of both sides of the fitting hole of the body.

Further, in such an electronic timepiece, a dial is placed on the upper surface of the fixing member. This dial plate has both a decorative function and a separation function that covers the outer peripheral portion of the upper surface of the display panel other than the time display section. A plurality of protrusions are provided on the lower surface of this dial, and these protrusions are engaged with, for example, an engagement groove formed on the upper surface of the frame.Furthermore, a glass is installed above the dial via a spacer, and this The glass is fixed to the outer body of the case of the watch device. In such a conventional mounting structure, the dial plate is engaged with the engagement groove of the frame body by a plurality of protrusions, so there is no problem with lateral wobbling, but the upper surface of the fixing member If there is any variation in the distance between the lower surfaces of the glass, the dial will shake in the vertical direction between the fixed member and the glass due to vibration or impact, resulting in problems with durability and product reliability. It was hot.

The present invention has been developed in view of the above circumstances, and is a fixing member for display panels and dials in electronic watches that allows the dial to be housed between the display panel and the glass in a secure manner without wobbling. It provides:

In the following, an embodiment of the present invention will be described in detail with reference to the drawings. In Fig. 1a, reference numeral 1 denotes a cylindrical frame made of synthetic resin with an open bottom, which is housed in an electronic watch case, which will be described later. A rectangular fitting hole 2 is drilled in the approximate center of the upper wall 1a, and a liquid crystal display panel 6, which will be described later, is inserted in the fitting hole 2.
A circular base plate 3 is attached to the lower surface of the upper wall 1a of the frame 1 by a plurality of screws 4.
A plurality of terminals 5 are disposed along both short width edges 2a, 2b of the liquid crystal display panel 6 at positions exposed from the fitting hole 2. The liquid crystal display panel 6 displays the time, date, etc., and is rectangular in plan view with flange-like protrusions 6a, 6b of a predetermined protruding width at the upper portions of both widthwise edges over the entire length, and a plurality of terminals (not shown) are disposed at predetermined intervals in the lengthwise direction on the undersides of the flange-like protrusions 6a, 6b. The terminals (not shown) of the liquid crystal display panel 6 correspond to the terminals 5 of the substrate 3, respectively.
The lower surface of the liquid crystal display panel 6 is in contact with the upper surface of the substrate 3, and the protruding end faces 7c, 7d of the brim-like protruding parts 6a, 6b on one longitudinal side edge are in contact with one longitudinal side edge 2a,
2b of the liquid crystal display panel 6. The short end faces 7a, 7b of the liquid crystal display panel 6 abut against the ends 2c, 2d of the fitting hole 2, respectively. An interconnector 8 is interposed between the lower surfaces of the flange-like protrusions 7c, 7d on both sides of the liquid crystal display panel 6 and the upper surface of the substrate 3. The interconnector 8 is configured by arranging linear terminals 10 at predetermined intervals in the longitudinal direction around a rod-shaped body 9 having a rectangular cross section and made of an elastic insulating material such as rubber having a length corresponding to the length of the flange-like protrusions 7c, 7d. The upper and lower surfaces of the interconnector 8 abut against the lower surfaces of the flange-like protrusions 7c, 7d of the liquid crystal display panel 6 and the upper surface of the substrate 3, and both side surfaces abut against the longitudinal side edges 2a, 2b of the fitting hole 2 and the side surfaces of the liquid crystal display panel 6 below the flange-like protrusions 7c, 7d. A terminal (not shown) of the liquid crystal display panel 6 and a terminal 5 of the substrate 3 are connected via a terminal 10 of the interconnector 8.
A notched groove 11 having a substantially semicircular shape in plan view is formed at a substantially intermediate position of the other longitudinal edge 2d of the fitting hole 2, and a member 12 made of an elastic material such as rubber is fitted between the notched groove 11 and the other short end surface 7b of the liquid crystal display panel 6. The repulsive force of the member 12 holds the liquid crystal display panel 6 against the fitting hole 2.
This presses the liquid crystal display panel 6 against one end edge 2c of the liquid crystal display panel 6 to prevent the liquid crystal display panel 6 from rattling in the longitudinal direction.

A first fixing member 13 made of a metal plate is attached to the upper surface of the frame 1 and located on one longitudinal edge 2a side of the fitting hole 2. The first fixing member 1
3 is formed by connecting mounting pieces 15 extending on both sides of a main body 14 having a square cross section. Mounting piece 1
The first fixing member 13 is attached to the frame 1 by engaging the first fixing member 13 with the engagement groove 16a provided on the upper surface of the frame 1 and fixing the attachment piece 15 to the frame 1 with screws 17. Main body 14 of first fixing member 13
The lower surface of the one end edge 14a side comes into contact with the upper surface of the brim-like protrusion 7c of the liquid crystal display panel 6 and presses the liquid crystal display panel 6 downward.

Further, a second fixing member 18, which is a fixing member of the display panel that is the object of the present invention, is attached to the upper surface of the frame 1, located on the other longitudinal edge 2b side of the fitting hole 2. There is. The second fixing member 18 is made of a metal plate, and has a central portion 19c and a central portion 19c.
a pair of elastic pieces 19a, both ends of which are bent upward and whose end sides can be elastically displaced in the vertical direction;
19b, and a pressing piece 20 protruding vertically downward is integrally connected to approximately the middle of one widthwise edge of the flat main body 19, as shown in FIG. 1b. , a mounting piece 21 projecting horizontally outward is integrally connected to the lower end of the pressing piece 20, and a screw insertion hole 22 is bored approximately in the middle of the mounting piece 21. . By engaging the mounting piece 21 with the engagement groove 16b provided on the top surface of the frame 1 and screwing the screw 23 into the screw hole 16c on the top surface of the frame 1 through the screw insertion hole 22, the second A fixing member 18 is attached to the frame 1. and,
Center part 19 of main body 19 of this second fixing member 18
As shown in FIGS. 2 and 3, the lower surface of the liquid crystal display panel 6 comes into contact with the upper surface of the flange-like protrusion 6b on the other longitudinal edge of the liquid crystal display panel 6 to press the liquid crystal display panel 6 downward, and also presses the liquid crystal display panel 6 against the inner surface of the pressing piece 20. comes into contact with the protruding end surface 7d of the flange-like protrusion 6b on the other longitudinal edge of the liquid crystal display panel 6, and presses the protruding end surface 7c of the flange-like protrusion 6a against the one side edge 2a of the fitting hole 2. . That is, the center portion 19c of the main body 19 and the pressing piece 20 function as a fixing portion that presses and fixes the liquid crystal display panel 6.

Therefore, the flat main body 1 of the second fixing member 18
As shown in FIG.
A dial plate 24 is formed of a cut ring 24b integrally molded on the upper surface of the outer periphery and extends outward from the outer periphery.
It is placed in contact with the tips of the upper surfaces of 19a and 19b. At the top of the dial 24, a glass 2
4 is fastened and fixed to the outer body 27 of the watch case by a glass edge 26. In addition, 2
8 is waterproof packing. Therefore, the dial 24 is attached to the elastic pieces 19a, 1 of the second fixing member 18.
Glass 25 placed upward due to the elastic force of 9b
It is fixed so that it is pressed against the lower surface of the holder to prevent vertical movement.

In this way, a pair of elastic pieces 19a, 1 are attached to the second fixing member 18 that presses the side edge side of the liquid crystal display panel 6.
9b, and by placing the dial 24 on the elastic pieces 19a, 19b, the elastic pieces 19a, 1
Since the dial 9b functions as an elastic pressing part for the dial, the dial 24 is elastically pressed against the upper glass 25, so that it is securely fixed within the watch case without shaking in the vertical direction. In this case, the lateral movement of the dial 24 is achieved by engaging a plurality of protrusions (not shown) integrally provided on the lower surface of the dial 24 with, for example, engagement grooves (not shown) of the frame 1. It is regulated by

FIG. 4 shows a second embodiment, in which the cut ring 24b provided on the dial 24 in FIG.
The spacer function of the cut ring 24b is replaced by a protrusion 27a that protrudes inward from the inner end surface of the outer body 27 of the watch case.
It is something that has been put to good use. That is, the upper surface of the outer peripheral edge of the main body 24a of the dial plate 24 is located on the lower surface of the protruding portion 27a, and
They are pressed together by the elastic force 9b.

FIG. 5 shows another embodiment of the present invention, which differs from the previous embodiment in that the first and second fixing members 13 and 18 in the previous embodiment are replaced with one fixing member 40. That's true. That is, the fixing member 40
has a generally rectangular and thin plate shape as a whole, and a liquid crystal display panel 6 is installed in the center of the upper wall so that the upper surface of the rectangular liquid crystal display panel 6 fitted in the frame 1 can be seen. A substantially rectangular hole 41, which is slightly smaller than the outer diameter of the hole 41, is bored therein. An attachment piece 43 is provided that extends vertically downward from the outer edge of the approximately central portion of both longitudinal side edges 42a, 42b of the fixing member 40, and further horizontally extends outward.
Two screw holes are provided on the top, and the fixing member 40 is fixed at a predetermined position on the frame 1 by screws 44 that are inserted into the screw holes. Furthermore, the fixing member 40
Partially cut grooves 45 are formed at both ends of the longitudinal side edges 42a and 42b extending inward from approximately the center thereof.
Flange-shaped edges 46a, 46b with holes a, 45b perforated
is bent downward by a predetermined depth and functions as a fixing member that presses the liquid crystal display panel 6. First and second elastic pieces 47a extend inwardly on both sides of one brim-like edge 46b, with the notch groove 45b separated and another notch groove 45c formed therein. , 47b are provided. the first and second
The open ends of the elastic pieces 47a and 47b are each bent upward to a desired height, so that they can be elastically displaced in the vertical direction. As a result, the dial plate (not shown) installed above the fixing member 40 is fixed to the first and second elastic pieces 47a, 47.
It is pressed upward by the elastic pressing force b in the same manner as in the first and second embodiments, and is securely fixed to the lower surface of the protruding part of the outer body of the glass or watch case to prevent vertical wobbling. It can be prevented.

FIG. 6 shows another embodiment that is a modification of the embodiment shown in FIG. In this embodiment, the fixing member 40 is attached to the frame body 1 with screws 44, and by making the mounting dimensions slightly smaller when fixing, the entire fixing member 40 is slightly curved upward. That is, the distance between both screw holes formed in the fixing member 40 (42a side and 42b side) is made slightly larger than the distance between both screw holes provided on the frame body 1, and the fixing member 40 is attached to the frame body 1. Screw 4
4, both sides 48 of the fixing member 40
The central portions of a and 48b are upwardly curved elastic pressing portions, and the curved elastic pressing portions 48a and 48
b can be elastically displaced in the vertical direction. Therefore, the curved elastic pressing portions 48a, 48b
The elastic force presses upward the dial plate (not shown) installed above the fixing member 40, and reliably prevents the dial plate from shaking in the vertical direction.

In this embodiment, a liquid crystal display panel was used as the display panel, but the display panel is not limited to liquid crystal, and may be a light emitting diode or the like. Of course, various modifications can be made within the range.

As described in detail above, an elastic pressing portion is integrally formed with the display panel fixing member that presses the top surface and side edges of the display panel, and the dial is elastically pressed against a support such as an upper glass or a watch case. With this structure, the dial can be reliably fixed without wobbling within the space between the glass side and the fixing member. Moreover, the structure is extremely simple and it is easy to manufacture, and the product is suitable for durability and reliability.

[Brief explanation of the drawing]

FIG. 1a is an exploded perspective view showing one embodiment of the present invention, FIG. 1b is an enlarged perspective view of the second fixing member in FIG. Diagram a
FIG. 3 is a plan view showing an assembled state of one embodiment; FIG. 3 is a partially cutaway sectional view of the same embodiment; FIG. 4 is a partially cutaway sectional view of another embodiment; Figure 5 is a perspective view showing the assembled state of the main parts of another embodiment;
The figure is a perspective view showing an assembled state of main parts of still another embodiment. 1... Frame body, 6... Liquid crystal display panel, 18...
Second fixing member, 19a, 19b...Elastic piece, 2
4...Dial board, 25...Glass, 47a, 47b
...Elastic piece, 48a, 48b...Elastic pressing part.

Claims (1)

[Scope of utility model registration request] Inside the watch case, the dial, display panel,
A fixing member for the display panel and dial plate in an electronic watch in which electronic circuit boards are stacked and housed, the fixing member fixing the display panel onto the electronic circuit board, and fixing the dial plate to the upper wall of the watch case. 1. A fixing member for a display panel and a dial in an electronic timepiece, characterized in that an elastic pressing portion for elastically pressing toward the user is integrally formed.