JPH0611540Y2 - Mounting structure of transparent touch panel for electronic devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a mounting structure of a transparent touch panel that is mounted on a housing for electronic equipment such as temperature control equipment.

<Prior Art> In recent years, in various electronic devices and the like, there has been proposed a transparent touch panel in which a transparent operation portion in a matrix form or a pattern lead wire portion is embedded and wired inside a transparent film sheet.

<Problems to be solved by the invention> When such a transparent touch panel is mounted on the front surface of a small case such as a temperature control device, (1) the film sheet of the panel is relatively thin and easily distorted, (2) ) Because the pattern lead wire by the printing method is embedded inside the sheet,
When mounting, it is restricted to bend the lead part sharply or to bend it many times even if the bending angle is small. (3) Due to requests for downsizing the housing and improving the effective operating area of the touch panel, etc. There was a risk that it would not be possible to attach the touch panel by attaching it to the touch panel side, because the touch panel could not secure a sufficient presser foot allowance, and partly lifted up.

The present invention has been made in view of such a conventional situation.

<Means for Solving the Problems> The mounting structure of the transparent touch panel for electronic devices of the present invention is
A front frame on the case side, a front panel made of a transparent plate and mounted on the front surface of the front frame, and a front panel which is closely attached to the front surface of the front panel and whose lead portion is introduced into the case and mounted. A transparent touch panel is provided, and an inclined portion for guiding the lead portion of the transparent touch panel and a lead pressing piece for contacting the lead portion with the inner surface of the front frame top plate are provided at one corner of the front panel. In addition, a lead pressing portion that faces the inclined portion and presses the lead portion of the transparent touch panel is provided inside the top plate of the front frame.

<Operation> With the above configuration, the lead portion of the transparent touch panel is effectively clamped between the inclined portion of the front panel and the lead retainer portion of the front frame and between the lead retainer piece of the front panel and the inner surface of the top plate of the front frame. , It is fixed very stably, and its front surface is well adhered to the front panel front surface without rising.

<Embodiment> FIG. 1 shows an example of an instrument housing to which a mounting structure of a transparent touch panel for an electronic device according to the present invention is applied. This example shows the case of a temperature control device.

In the figure, 1 is a case made of a rectangular resin or the like having an open front surface, 2 is a front frame made of a resin or the like, 3 is a front panel made of a transparent resin plate or the like, and 4 is transparent made of a thin transparent resin film sheet. The touch panel 5 is a print display sheet made of a thin transparent resin sheet or the like,
Reference numeral 6 denotes a housing storage program card in which a control pattern P and the like are described.

The front frame 2 is detachably attached to the opening of the case 1, and a slit-shaped card storage portion 7 is formed by penetrating from the side of the front frame 2 to the left and right.
The program card 6 for housing the housing is housed in the housing, and it cannot be seen when the program card 6 is housed in the recess 8 in the center of the front surface of the front frame 2, but it can be seen when the program card 6 is not housed. A display plate 9 on which an abbreviated symbol 10 of the touch portion of the transparent touch panel 4 is printed is mounted, and the front panel 3 is mounted on the entire front surface of the front frame 2.

The front surface 4a of the transparent touch panel 4 is closely attached to the entire surface of the front panel 3, and the lead portion 4b is introduced into the front frame 2 and the case 1 from one corner of the front panel 3. The final fixing of the transparent touch panel 4 is performed by applying an adhesive or the like to the edge of the front surface 4a and adhering it to the corresponding edge of the front panel 3.

Further, the printed display sheet 5 is further covered on the front surface of the transparent touch panel 4, and the final fixing is performed by applying an adhesive or the like to the edge portion of the front surface of the sheet 5 to correspond to the front surface of the front frame 2, for example. Adhesive to the concave frame part. Display codes 11 and 12 such as a touch panel of the transparent touch panel 4, a 7-segment code display element built into the housing, and abbreviated symbols corresponding to blinking lights are printed on the print display sheet 5 in advance.

The mounting structure of the transparent touch panel 4 mounted as described above is shown in more detail as shown in FIGS.

In the case of this transparent touch panel 4, as shown in FIG. 2, a large number of pattern lead wire portions 13 are provided on the edge of the panel front surface 4a.
Is embedded and is connected to a desired portion of the printed circuit board housed in the case 1 through a lead portion 4b extending from the upper left corner of the panel front surface 4a in the figure.

When specifically mounting the transparent touch panel 4, it is necessary to fold the base portion of the lead portion 4b so that the panel front surface 4a is brought into close contact with the surface of the front panel 3 as described above. At this time, good adhesion cannot be obtained unless special consideration is given to the folded portion 14 of the lead portion 4b, the front panel 3 side and the front frame 2 side as shown in FIGS. 6 to 7. . That is, as shown in FIG. 6, the lead portion 4b
When the fold line 1 is simply extended from the panel front surface 4a, even if the folding line l is to be placed at the same level as the edge portion of the panel front surface 4a, the folding line l'is likely to be formed in a portion slightly shifted upward.
Even when assembled in this state, a part of the panel front surface 4a is lifted up as shown in FIG. 7, and a clean close contact cannot be obtained.

Therefore, in the present invention, as shown in FIGS.
First, shallow semicircular cuts 15 and 15 are made at the base of the folded portion 14 of the lead portion 4b, that is, at both edges of the panel front surface 4a, and at both edges of the lead portion 4b appropriately separated from the cuts 15 and 15. Is a hook portion 1 protruding in the width direction
6 and 16 are formed, and on the other hand, on the front panel 3 side, as shown in FIG. 2, an inclined portion 17 is provided at the upper edge of the front face of the panel, and an inner side corresponding to the inclined portion 17 is provided. A lead presser piece 18 formed to be slightly tall is provided. Further, on the front frame 2 side, the front panel 3 is provided inside the frame top plate as shown in FIG.
The lead pressing portion 19 is extended so as to face the inclined portion 17 of the above, and the hook portions 16 and 16 of the lead portion 4b are provided on the inner wall surface of the top plate as shown in FIGS. 3 to 5. A pair of engaging protrusions 20, 20 to be locked is formed.

Therefore, first, the lead portion 4 is formed by the notches 15 and 15 described above.
The folding line 1 of b can be easily put in a desired position (at the same level as the edge of the panel front surface 4a). Then, at that time, it is not necessary to fold it at an acute angle, and it is about the inclination angle of the inclined portion 17 (more accurately, the angle formed by the outer start point (point A) of the inclined portion 17 and the outer start point (point B) of the lead pressing piece 18). θ degree)
Therefore, the risk of damage is avoided as much as possible. The reason is that the lead portion 4b of the transparent touch panel 4 of this type is limited to sharp bending only a few times, and is strictly prohibited to be redone many times.

Further, when the transparent touch panel 4 is attached, as shown in FIGS.
7 is introduced from the lead pressing piece 18 at a loose angle, and first, the inclined portion 17 is sandwiched between the hanging lead pressing portions 19 of the front frame 2, and the lead pressing piece 18 portion is a top plate of the front frame 2. Since it is sandwiched between the wall surfaces, and the engaging projections 20, 20 of the top plate are engaged with the hook portions 16, 16 of the lead portion 4b, they can be fixed extremely stably without displacement.

In addition, in the case of this transparent touch panel 4, the cut 1
The corner side of 5, 5 and the notch 15a ... Properly provided in the other corner are formed as positioning notches so as to project on the surface of the corner of the front panel 3 correspondingly. Further, since the positioning protrusions 3a are engaged with each other, the deviation or the like on the front surface side of the front panel 3 is very effectively prevented.

When the transparent touch panel 4 is mounted, if the lead portion 4b is folded after the folding angle is smaller than the above θ and then mounted, the panel front surface 4a is closely adhered to the surface of the front panel 3 without any gap.

In the above embodiment, the mounting structure of the transparent touch panel for the instrument housing including the case, the front frame, the front panel, the transparent touch panel, and the printed display sheet was described, but the present invention is not limited to this. It is also possible to omit the print display sheet and directly print a desired display code or the like on the surface of the transparent touch panel.

Further, it is needless to say that the applicable casing is not limited to the instrument casing, and can be applied to other electronic device casings.

<Effects of the Invention> As is apparent from the above description, the mounting structure of the transparent touch panel for electronic devices of the present invention has the following effects.

(1) First, even if the film sheet is on a relatively thin and easily distorted transparent touch panel, its front surface can be attached neatly to the front panel front surface, which makes it extremely easy to see and greatly improves visibility. Can be achieved.

(2) In addition, since the transparent touch panel can be stably fixed, it does not shift with time and always maintains a high quality state.

(3) In addition, since it is not necessary to sharply bend the lead part of the transparent touch panel during and after mounting, the protection of the lead part is complete, unexpected failures are prevented in advance, and high reliability is secured. it can.

(4) Also, by mounting the above-mentioned good transparent touch panel,
Since it is not necessary to provide a wide bonding margin on the housing side or the touch panel side, the demands for downsizing the housing, improving the operation effective area of the touch panel, etc. are sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of an instrument housing to which a mounting structure for a transparent touch panel for electronic devices according to the present invention is applied, and FIG. 2 is a perspective view showing a relationship between a front panel and a transparent touch panel, 3 is an enlarged plan view showing the lead portion of the transparent touch panel, FIG. 4 is a partial longitudinal sectional view showing the mounting state of the transparent touch panel, and FIG. 5 is a partially enlarged perspective view showing the mounting state of the transparent touch panel. FIG. 6 is an enlarged plan view showing a lead portion of a normal transparent touch panel,
FIG. 7 is a partial vertical cross-sectional view showing a mounted state of the transparent touch panel of FIG. In the figure, 1 ... Case, 2 ... Front frame, 3 ... Front panel, 3a ... Positioning protrusion, 4 ... Transparent touch panel, 4a ... Front surface, 4b ... Lead part, 5 ... Printed display sheet, 6 ... Program card for housing, 14 ... Folding part, 15 ... Notch, 16 ... Hook part, 17 ... Inclined part, 18 ... Lead pressing piece, 19 ... Lead pressing part, 20 ... Engagement protrusion,

Claims (3)

[Scope of utility model registration request] 1. A front frame on a case side, a front panel made of a transparent plate and mounted on the front surface of the front frame, and a front portion of the front panel is closely attached to the front surface of the front panel and its lead portion is introduced into the case for mounting. And a transparent touch panel for operation, and a lead retainer for abutting the inclined portion for guiding the lead portion of the transparent touch panel at one corner of the front panel and the inner surface of the front frame top plate. A mounting structure for a transparent touch panel for an electronic device, comprising: a lead pressing part that is provided on the inside of a top plate of the front frame and that presses the lead part of the transparent touch panel. 2. The mounting structure for a transparent touch panel for electronic equipment according to claim 1, wherein notches are provided in both base portions of the lead portion on the front surface of the transparent touch panel. 3. The mounting structure for a transparent touch panel for an electronic device according to claim 1, wherein a notch is provided at an appropriate position on the front surface of the transparent touch panel, and a positioning protrusion is provided at a corresponding position on the front surface of the front panel.