JPH033064U - - Google Patents

Description

[Brief explanation of drawings]

1 and 2 are respectively a perspective view and a side view showing a first embodiment of this invention, FIG. 3 is a cross-sectional view of the first embodiment of FIG. 1, and FIG. 4 is a head of the first embodiment of FIG. A perspective view of the section 21, FIG. 5 is a perspective view of the head section 21 of FIG.
FIG. 6 is a perspective view showing a second embodiment of this invention;
7 is a perspective view of the connecting ring 40 shown in FIG. 6, FIG. 8 is an explanatory view of the case where a clamping spring 46 is used in the connecting portion between the main body 22 and the head portion 21 shown in FIG. 1, and FIG. A plan view of the main part of the optical scanner, with a part of the part shown in a cutaway sectional view, Figures B and C are AA sectional views of the above-mentioned connecting part, and Figure 9 is a tongue piece of the embodiment shown in Figure 1. 3
A perspective view showing one modification example in which the width of 1a is narrowed,
Figure 10 is a basic configuration diagram of a conventional optical scanner, and Figures 11A and 11B show the state of the irradiated light when the optical scanner in Figure 10 is perpendicular to the scanned surface and when it is tilted, respectively. Figure 12A is a plan view showing the barcode on the scanned surface, Figure 12B
is a waveform diagram of the electrical signal output from the light receiving element 6 when the barcode in FIG. 12A is scanned by the optical scanner in FIG. 10, and FIGS. 12C and D are respectively on the barcode in FIG. 12A When scanned by the optical scanner shown in FIG. 10, the shaping circuit 7 of the decoder
FIG. 3 is a waveform diagram of a normal or abnormal digital signal output from a.

Claims (1)

[Claims for Utility Model Registration] (1) Light emitted from a light-emitting element is irradiated onto a symbol or character on a surface to be scanned, and the light reflected from the symbol or character is made to enter a light-receiving element to convert it into an electrical signal. In an optical scanner that converts electrical signals and inputs the electrical signals to a decoder to output code signals indicating corresponding symbols and characters, the optical scanner includes a main body housing the decoder, the light emitting element, the light receiving element, and the optical system. The main body has a generally elongated box-shaped case;
The front ends of both side plates of the case are extended in the longitudinal direction, and a pair of tongue pieces are formed to face each other. A lens is protrudingly attached to the head to irradiate light onto the symbol or character and collect the reflected light, and the head is disposed between the opposing tongues, and is attached to both side walls of the head. is opposite the above tongue piece,
An optical scanner characterized in that the head portion and the main body are rotatably connected to each other by a pair of rotation shafts protruding from their side walls or tongue pieces. (2) In claim (1), the head portion has a generally cylindrical outer shape, and the lens is attached to protrude from the center of the front end surface of the head portion, and the head portion is arranged between opposing tongue pieces. , an annular connecting ring is arranged on the outside of those tongues and the head, and a pair of first rings protrude from the outer circumferential surface of the head or the inner surface of the connecting ring in a direction perpendicular to the central axis of the head. The head portion and the connecting ring are rotatably connected to each other by a moving shaft, and from the inner surface of the connecting ring or the tongue piece facing thereto, the first rotating shaft is perpendicular to the central axis of the head portion and is connected to the first rotating shaft. An optical scanner, characterized in that the connecting ring and the main body are rotatably connected to each other by a pair of second rotating shafts projecting in a direction perpendicular to the longitudinal direction of the optical scanner. (3) In claim (1), the pair of rotation shafts are formed in a prismatic shape, and engagement holes into which the respective rotation shafts are inserted are formed in both side walls of the head portion or the tongue piece of the main body, and An optical scanner characterized in that clamping springs are installed in the peripheral walls of the engagement holes, respectively, and the rotation shafts are clamped by the clamping springs. (4) The optical scanner according to claim (1), characterized in that the pair of tongues are made of an elastic material, and the width of the tongues is equal to or smaller than the thickness of the tongues. (5) An optical scanner according to any of claims (1) to (4), characterized in that a connection cord for electrically connecting the main body and the head portion is embedded in the rotation shaft and wired therein. (6) Claims (1) to (5) are characterized in that the light-emitting element of the head portion, the light-emitting element, and the optical system are surrounded by a light-shielding material, and they are embedded in a transparent material and molded into one piece. optical scanner.