JPS582072Y2 - optical reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical reading device, and particularly to an improvement in a code extraction structure.

For example, in order to facilitate product management, optical reading devices such as so-called light pens, which optically read codes such as bar codes written on recording paper, are often used.

In this type of device, the cord is drawn out from the device body, but since the device body is frequently moved to perform reading operations, the cord is likely to become tangled.

For this reason, especially when pushing, pulling, or
External forces such as bending, rotation, etc. are applied to the wire, and the wire is likely to break.

Conventionally, the cord has been fixed in place by tightening it with a screw inside the device body, making a knot, or so-called knot, in the cord, fitting a bushing into the drawer opening, or adding a curved surface to the drawer part, in order to control the cord in various ways. This protects it from external forces and prevents disconnection.

However, both structures have disadvantages in that they require a small space to protect the cord, are difficult to work with, and are insufficient to maintain the desired effect.

1 This invention was created based on the above circumstances,
The purpose is to provide an optical reader that can reliably protect the code and prevent disconnection by using component parts.

An embodiment of the present invention will be described below based on the drawings.

In the figure, 1 is the main body of the device, which consists of a case 2 and a cap 3 that is detachably attached to one end of the case 2 with a single touch.A nut 4 is screwed to the other end of the case 2. be done.

The cap 3 has a sharp tip, is open, and has a light-shielding structure that prevents light from leaking from the portion where it is attached to the case 2.

One end of the case 2 slightly extends into the cap 3, and a plurality of light emitting elements 6, whose positions are fixed with resin 5, are provided thereon.

Each of these light emitting elements 6 is tilted so as to project light in a concentrated manner at a position slightly protruding from the opening of the cap 3, resulting in a long depth of field.

Further, a guide bush 7 having a guide hole 7a along the axial direction of the case 2 is provided at the center of the light emitting elements 6.

A plurality of through holes 8 having different diameters are bored in the case 2 along the axial direction, and a lens 9 is fitted into one end of the hole 8, that is, the end adjacent to the guide plusure, and the other end is fitted with a lens 9. A light receiving element 10 is attached to the portion.

Furthermore, a baffle plate 12 having a pinhole 11 is fitted into the through hole 8 near the light receiving element 10.

A component storage chamber 13 is provided in the case 2 communicating with the through hole 8, and the nut 4 is screwed into the open end of the component storage chamber 13.

A seat 14 having a screw hole 14a is provided in the component storage chamber 13, and other electronic components 15 for controlling the output of the light receiving element 10 are mounted thereon, and a wiring board 16 having printed wiring is screwed thereon.

This wiring board 16 is electrically connected to the light receiving element 10, and is pulled out from the device body 1 and communicates with a storage device (not shown), and a cord 17 is held by a structure described later.
to be electrically connected.

Furthermore, a convex portion 18 which is an engaging portion is provided at one end of the wiring board 16.
are integrally protruded.

A cord protector 19 is fitted onto the cord 17, or is press-fitted or integrally molded.

This cord protector 19 is made of a flexible material such as a rubber material or a vinyl material, and includes a collar piece 20 provided with a cutout recess 20a that engages with the protrusion 18, and
The fitting tube 21 is integrally connected to the fitting tube 21 and has a teniper-shaped outer peripheral wall.

The through hole 4a of the nut 4 fits into the fitting cylinder 21 of the cord protector 19, and contacts this tapered outer circumferential wall to reliably tighten the cord 17 through the fitting cylinder 21.

Furthermore, one end surface of the nut 4 abuts the end surface of the collar piece 20 on the fitting tube 21 side, and presses and urges the notch recess 20 a to engage with the projection 18 .

Therefore, the other end surface of the collar piece 20 comes into contact with the edge of the wiring board 16.

The tip of the optical reading device constructed in this way, that is, the tip of the cap 3, is slid into contact with a recording sheet inserted into a protective case a made of a transparent material, for example, through the protective case a.

A recording code C, which is a recorded image such as a bar code, is written on the recording paper, and light from the light emitting elements 6 is focused and guided to the recording code C.

This light is reflected by the recording paper, guided along the axial direction of the case 2, transmitted through the lens 9 via the guide hole 7a, and formed into an image on the pinhole 11.

The light-receiving element 10 outputs this image separately for brightness and darkness, and sends it to electronic components 15.
... identifies this and converts it into an electrical signal, code 1
7 to the storage device.

By the way, external forces such as pushing, pulling, bending, and rotation are applied to the portion of the cord 17 drawn out from the device main body 1 by moving the device main body 1.

However, since the cord 17 is tightened via the cord protector 19 which engages with the protrusion 18 to prevent rotation and is firmly fixed by the nut 4, it is reliably protected from any external force and will not break. .

In this way, in the above embodiment, since the depth of field is made long, the tip of the cap 3 can be directly slid into contact with the recording paper, and is not limited by the thickness of the protective case a. Recording code C can be read.

As explained above, according to the present invention, a retaining part is provided protruding from the wiring board on which other electronic parts for controlling the output of the light receiving element are mounted, and a retaining part is provided on the wiring board that is electrically connected to the wiring board and attached to the cord pulled out from the main body of the device. A cord protector having a concave portion that engages with the above-mentioned retaining portion is attached, and a nut screwed onto the device body presses the cord protector against the edge of the wiring board, and the cord is tightened and fixed via the cord protector. Therefore, it is possible to use the component parts of the device to reliably protect the cord from various external forces on the cord pull-out part and prevent breakage, and it is also possible to easily fix the cord without impairing assembly workability. be effective.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of an optical reading device, and FIG. 2 is an explanatory diagram of the assembly of the main parts thereof. 1... Device main body, 6... Light emitting element, C
... Recorded image (recorded code), 10 ... Light receiving element, 15 ... Electronic component, 18 ...
Engaging portion (convex portion), 16... Wiring board, 17...
... Code, 20a ... (notch) recess, 1
9...Code protector, 4...Natsuto.

Claims (1)

[Scope of utility model registration request] A device that exposes a recorded image using a light-emitting element provided in the main body of the apparatus and identifies the image by receiving the reflected light with a light-receiving element, which is equipped with other electronic parts for controlling the output of the light-receiving element and has a convex portion. A cord protector having a wiring board provided on the device main body, a cord electrically connected to the wiring board and pulled out from the device main body, and a recess that is attached to the cord and engages with a convex portion of the wiring board. and a nut screwed onto the main body of the device that presses the code protector against the edge of the wiring board and tightens and fixes the code via the code protector.