JPH02773Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is a device for displaying characters, numbers, or figures (hereinafter referred to as characters, etc.) electrically or optically, such as a liquid crystal display panel or an electrochromic display panel. This invention relates to a mounting structure for a panel board.

[Prior art]

Panel boards that electrically and optically display characters, etc.
Conventionally, a structure shown in FIG. 1 has been proposed as a structure for attaching to a small device such as an electronic wristwatch or an electronic desktop calculator. That is, 1 is a housing, and in order to lock the panel plate 3 to this housing 1, there is an inelastic pawl 1a formed thickly so as not to have elasticity.
and an elastic claw 1 formed thin to have elasticity.
b, and a supporting portion 1c disposed with a gap 4 formed on the back surface of the elastic claw 1b are integrally formed, and the bottom surface of the housing 1 is provided with mounting parts (not shown) and a battery (not shown). A ground plate 5 is attached which functions as a connection terminal. Also, 2
is a circuit board on which an electronic circuit 2a is mounted, and a panel board 3 placed on this circuit board 2 is hooked at one end to a non-elastic claw 1a, and the elastic claw 1b is bent in the rear direction. the other end of the panel plate 3 is inserted, and the panel plate 3 is temporarily locked by the elasticity of the elastic claw 1a, and then a spacer 6 is inserted into the gap on the back side of the elastic claw 1b, and the elastic claw 1 is
A structure is used to prevent b from falling toward the back. Note that 7 is a connector that supplies display signals from the circuit board to the panel board 3.

[Problems with conventional technology]

The structure of the prior art described above prevents the elastic claw 1b from falling in the rear direction due to plastic deformation of the elastic claw 1b, and prevents the elastic claw 1b from falling due to impact.
The spacer 6 is inserted into the gap 4 between the back surface of the elastic claw 1b and the support member 1c in order to prevent it from becoming disengaged. However, in the above structure, a separate spacer is used. However, the disadvantage was that the number of parts and assembly steps increased.

[Purpose of invention]

The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a panel board mounting structure that can reduce the number of parts and the assembly process, and can also be securely fixed.

[Key points of the idea]

In order to achieve the above-mentioned object, the present invention includes integrally molding at least one claw member for locking to a panel plate on the housing of the device, and a support member provided with a gap formed at the back of the claw member. After the upper panel plate is locked with the claw members, a spacer part integrally formed on the main plate, which has a function of fixing other parts or connecting terminals of batteries, etc., is fitted into the gap. The purpose of this invention is to prevent the claw members from falling toward the rear and from coming unlatched due to impact, simplify the structure and assembly, and securely fix the panel board.

〔Example〕

The present invention is a panel board that electrically and optically displays characters, numbers, symbols, etc., such as a liquid crystal display panel used in a display device of electronic devices such as an electronic wristwatch or an electronic desk calculator, or an electrochromic display panel. However, in the embodiment described below, an example of a structure for mounting a liquid crystal display panel of an electronic wristwatch will be explained in detail with reference to FIGS. 2 to 4.

In these drawings, a housing 1 is shown in which each part constituting the timepiece module of an electronic wristwatch is attached.
1 includes two thick inelastic claws 11 without elasticity for attaching the liquid crystal panel 12 to one edge.
a, 11b, and two elastic claws 11c, 11 having a wall thickness sufficient to have elasticity on the other edge.
d, and a void 1 at the back of the elastic claws 11c and 11d.
3 and 14 are provided, and the supporting portions 11e and 11f are integrally formed. Electronic circuit block 15a
The circuit board 15 on which the panel board 12 and the interconnectors 16 and 17 that are electrically connected to the panel board 12 are sandwiched between the panel boards 15 and stacked one on top of the other, and the panel board 12 is connected to the non-elastic claws 11a and 11 of the housing.
b, and is fixed to the housing 11 by locking with elastic claws 11c and 11d. battery 19
The base plate 18, which has the function of assembling the battery 19 and as a connection terminal for the battery 19, is constructed by fitting the holes of the ears 18a and 18b of the base plate 18 into the two protrusions 11g and 11h formed on one edge of the housing 11. let me,
A protrusion 11i formed on the other edge of the housing 11 and an ear portion 18 formed on the other end of the base plate 18
It is attached to the housing by fitting into the hole c. This base plate 18 is integrally formed with spacer portions 18d and 18e which are partially extended and bent, and whose tips are bent into a U-shape. , 14. The base plate 18 also has a notch 18f into which the battery 19 is inserted.
, a contact piece 18g for pressing the peripheral side of the battery 19 to electrically connect it, and the circuit board 12.
A contact portion 18h, etc., which constitutes a movable contact of a switch that controls the timepiece device, which can be contacted with a conductive portion (not shown) provided in the watch device, is formed. In this way, the above base plate 1
In addition to the function of preventing the panel plate 12 from coming off, 8 also functions as a switch that controls the operation of the clock, and the battery 1.
It performs a plurality of functions such as the function of a connecting terminal electrically connected to one electrode (anode) of 9.

In the mounting structure of the panel board 12 having the above configuration, the circuit board 12 and the interconnector 13 are assembled into the housing 11, and then the elastic claws 11c, 1
The panel board 12 is assembled with the panel 1e being bent toward the rear, and the elastic claws 11c and 11d return to their original positions, and the panel board 12 is temporarily assembled. Next, the ears 18a, 18b, 1 of the main plate 18
8c respectively into the protrusions 11 of the housing 11.
At the same time, the spacer parts 18d and 18e are inserted into the gaps 13 and 14, respectively, and the assembly is completed. Therefore, the spacer parts 18d, 18e connect the back surfaces of the elastic claws 11c, 11d and the support parts 11e, 1 to the gaps 13, 14.
1f, and press the elastic claws 11
Since the back surfaces of the panels 11c and 11d are pressed, the panel board 12 is securely fixed without being disengaged by the elastic claws 11c and 11d.

[Effect of idea]

As described above, the present invention provides the elastic claws 11c,
In order to prevent the 11d from falling or becoming unlatched due to impact, a part of the base plate that has the function of an electrical terminal or the function of attaching other parts can be extended without using a separate spacer. Since the spacer portion is formed to also function as the spacer, there are advantages in that the number of parts and assembly steps can be reduced, and that it can be securely fixed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the prior art of the present invention. Fig. 2 is a plan view showing an embodiment using the present invention, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 shows the bottom of the embodiment shown in Fig. 3 above. FIG. 11... Housing, 11a, 11b... Inelastic claws, 11c, 11d... Elastic claws, 11e, 11
f...Supporting member, 12...Panel board, 13, 14
... air gap, 15 ... circuit board, 18 ... ground plate, 1
8d, 18e...Spacer portion.

Claims (1)

[Scope of utility model registration request] A panel plate electrically/optically displaying characters, numbers, figures, etc., an elastic claw for locking the panel plate, and a supporting member disposed with a gap at the back of the elastic claw are integrally formed. Attachment of a panel board consisting of a housing, a base plate integrally formed with a fixing part for fixing other parts to the housing, and a spacer part that is inserted into the gap and prevents the elastic claw from deflecting in the rear direction. structure.