JPH0611668Y2 - Screen fixed structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a screen fixing structure for an individual calling receiver with a display, etc., and in particular, it is a structure for fixing the screen from the inner surface side, and the screen peels off against pressure from the outside. The present invention also relates to a screen fixing structure that does not easily fall off and is easy to assemble.

[Conventional technology]

Conventionally, this type of individual call receiver (hereinafter referred to as receiver)
There is a type that transmits a message in English and numerical display. A window is formed on the head of the receiver with a transparent screen, and a display such as an LCD (liquid crystal display) is installed inside. Is common. The screen uses a transparent acrylic plate or the like different from the casing material and fixes it to the casing. As a fixing structure, there is one as shown in FIGS. 6 to 8.

First, in the structure shown in FIG. 7, the screen is fixed to the receiver housing by a method called ultrasonic welding. Beating tables 61, which are welded portions at the time of screen molding, are provided at a plurality of positions on the periphery of the screen 6, and a cover 9 is provided. The beat table 61 is melted and welded to the inner surface of the cover 9 by fitting the screen 6 in FIG. 6 and applying vibration to the screen with an ultrasonic welding machine. The problem with this structure is that when the conditions for welding work vary, it is not completely welded, and when the screen 6 is pushed off from the outside with a finger or the like, an accident occurs, or when the receiver is dropped. It is worried that it will come off in shock.

FIG. 8 shows a structure in which an adhesive tape (double face) is used in anticipation of the above-mentioned welding failure and the like. Although this structure is strong against shocks such as dropping, it may peel off when the adhesive area is small when pressure is applied with a finger or the like. Also, when the double face 8 is attached to the screen 7 or the cover 9, the release agent or hand oil at the time of molding adheres to the tape, the original adhesive strength cannot be obtained, and an unexpected screen drop accident occurs. There are things to do.

[Problems to be solved by the invention]

As described above, the conventional screen fixing structure described above has a drawback that it has a defective element in terms of reliability in the sense of absorbing work variations and durability under rough operating conditions in the field.

[Means for solving problems]

According to the screen fixing structure of the present invention, a projection is provided at a longitudinal end portion of a plate-shaped transparent plastic (acrylic resin etc.) screen through which a display portion can be seen in a part of a cover constituting a receiver, and a facing side end portion. A predetermined number of through holes are formed in this. Then, double-face tape is attached to the windows other than the window that becomes the display. On the other hand, on the inner surface of the cover to which the screen is attached, a concave portion into which the entire screen fits, a square window where the screen is exposed as a display portion, and a protruding portion provided at the end portion of the screen near the side wall of the cover are inserted. A locking hole and a pin-shaped protruding portion that fits into the screen-side hole are provided at opposite positions.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a schematic external perspective view of an individual calling receiver with a display in which the present invention is implemented. The receiver 1 is attached to a waist belt or the like and is carried, and when a call signal is received, it sounds from a speaker or an LED (light emitting diode) 11 (second).
Blinks, and light is emitted through the LED lens 4. When the message is received, the message is displayed on the display unit 2 by a switch operation or the like.

The internal structure of the display unit 2 is as shown in FIG. 2 which is a cross section taken along the line AA. The rectangular window 3 into which the slightly convex display window 23 of the screen 2 fits in the cover 3 that constitutes the housing.
3, a protrusion 21 protruding from the end of the screen in the longitudinal direction
A bag-shaped locking hole 31 into which the hole is inserted and a pin-shaped protrusion 32 that fits into the through hole 22 provided near the opposite end in the longitudinal direction of the screen are also provided. An LED lens 4 is attached at a position corresponding to the LED 11. The screen 2 is a plate-shaped transparent plastic material that can be fitted and fixed to the cover 3 as described above, but a point to be noted in this structure is to prevent a gap in the fitting portion. This is because if there is a gap, dust and rainwater can easily enter during use. Also, screen 2
It is also necessary to prevent the user from easily coming off when the user mischievously pushes the display surface with a finger or the like, or when the user accidentally collides with an external object.

In response to such a requirement, in the present invention, as shown in FIGS. 3 to 5, the double face tape 5 is attached to a portion other than the display window 23 of the screen 2 so as to be adhered to the inner surface of the cover 3 for a sealing effect. Is giving. At the same time, in order to secure the mechanical strength, one side has a protrusion 2 as shown in FIG.
1 is inserted into the locking hole 31 so that it does not fall down, and the cover side protrusion on the opposite side is crushed with heat caulking or the like to be integrated with the screen 2. As a result, the screen 2 is firmly integrated with the cover 3. With the above structure, the display unit 10 mounted inside the receiver is protected. The display is LC
I use devices such as D (liquid crystal).

[Effect of device]

As described above, according to the present invention, when fixing the screen from the inner surface of the cover to the housing, the protrusion provided at the end of the screen is inserted into the locking hole formed in the bag in the housing, and the facing side is heated. In addition to fixing by crimping, the double-faced tape is attached to the area other than the screen window, so it has the effect of firmly fixing the screen and cover, and sealing to prevent dust and rainwater from entering. or,
The work of the present invention is advantageous in terms of cost because the work such as heat caulking can be performed very easily by using a jig. Furthermore, the present invention has a structure that is durable against mechanical damage that may be caused when it is carried, and is practically excellent.

[Brief description of drawings]

FIG. 1 is an external perspective view of an individual calling receiver embodying the present invention,
2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a plan view of the embodiment of the present invention shown in FIG. 1 as seen from inside the receiver, and FIG. 4 is a sectional view taken along the line BB of FIG. FIG. 5 is a sectional view taken along the arrow, FIG. 5 is an external perspective view of the screen unit of the present invention, FIG. 6 is a sectional view of a conventional screen fixing portion, and FIG. 7 is an external perspective view showing an example of the conventional screen unit. The figure is also an external perspective view showing another example of the conventional screen unit. In the figure, 1: receiver for individual call, 2: screen, 2
1: protruding part, 22: hole, 23: display window, 3: cover, 3
1: Locking hole, 32: Convex part, 33: Square hole, 4: LED lens, 5: Double face, 6: Screen, 61: Beat allowance, 7: Screen, 8: Double face, 9: Cover, 10 : Display, 11: LED.

Claims (1)

[Scope of utility model registration request] 1. A structure for fixing a screen used for a display unit of an individual calling receiver or the like, wherein a projection provided on a part of one end of the screen and a projection provided on the other end of the screen are provided. At least one through hole, a convex portion provided on one surface of the screen and exposed to the outside as a display window of the display unit, and a pressure-sensitive double face adhesive adhered to a portion other than the convex portion on the one surface of the screen. A tape, a bag-like locking hole provided on one side wall portion of the inner surface of the housing of the receiver or the like to which the screen is fixed, and engaged with the protrusion, and a side wall portion facing the one side wall portion. A screen fixing structure comprising: a pin-shaped protruding portion which is provided and is fitted into the through hole and whose head is crushed by heat caulking after fitting.