JP2716897B2 - Hand scanner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand scanner for reading bar code symbols by manual scanning.

[0002]

2. Description of the Related Art In an apparatus of this type, an opening is formed at a front end portion of a bar code symbol to allow reflected light to be introduced into the inside of the apparatus again through a light beam applied to the bar code symbol. A scanner hood is installed to prevent erroneous reading due to external light entering inside. Conventionally, such a scanner hood has been
Although it is formed of a hard member such as plastic, in recent years, it is often formed of a flexible member such as rubber or vinyl chloride in order to easily attach and detach the scanner hood. Here, a conventional example of a hand scanner having a scanner hood formed of such a flexible member will be described with reference to FIGS.

First, FIG. 3 shows an appearance of the hand scanner 1. That is, in the hand scanner 1, a scanner hood 5 formed of a flexible member is attached to a distal end portion of a scanner main body 4 formed by a grip portion 2 and a reading portion 3 slightly bent with respect to the grip portion 2. It is formed by being done. Here, an opening 6 for passing a light beam is formed at the tip of the scanner main body 4, and a hood opening 7 is also formed in the scanner hood 5 in accordance with the position of the opening 6. A transparent protective cover 8 for closing the opening 6 is attached to the hood opening 7.

FIG. 4 shows a mounting structure of the scanner hood 5 to the scanner main body 4 and the like. First, a step 9 for fitting the scanner hood 5 is formed at the tip of the scanner main body 4.
The step portion 9 has four first fitting holes 10 formed near the four corners as part of the first fitting portion, and two positioning grooves 11 formed at the ends. I have. On the inside of the scanner hood 5, four first fitting protrusions 12 are formed so as to protrude as another part of the first fitting portion fitted into the first fitting hole 10, and the positioning groove is formed. Two positioning projections 13 fitted to the projection 11 are formed so as to protrude. A fitting groove 14 is formed at the distal end inside the scanner hood 5, and the protective cover 8 is fitted into the fitting groove 14.

In such a structure, the scanner hood 5 is attached to the scanner main body 4 by being fitted into the step portion 9. The fitting of the positioning protrusion 13 to the positioning groove 11 prevents the scanner hood 5 from falling off from the scanner main body 4. Therefore, when scanning a barcode (not shown), as shown in FIG. 5, the gripper 2 is held, the opening 6 of the reading unit 3 faces the barcode attached to the product 15, and the entire hand scanner 1 is moved. Let it. In FIG. 5, an arrow A indicates a general scanning direction of the hand scanner 1.

[0006]

When scanning a bar code, the scanner hood 5 usually slides on the bar code-added product 15. For this reason, as illustrated in FIG. 5, there is a disadvantage that the fitting of the first fitting projection 12 to the first fitting hole 10 is released, and the scanner hood 5 is easily removed from the scanner main body 4. In addition, when the first fitting protrusion 12 is disengaged from the first fitting hole 10 and the scanner hood 5 is disengaged from the scanner main body 4, as shown in FIG. The protective cover 8 often comes off, which is inconvenient.

Therefore, conventionally, it is generally practiced that the contact area between the scanner hood 5 and the scanner main body 4 is increased by increasing the depth of the scanner hood 5 so that the scanner hood 5 is hardly detached from the scanner main body 4. Have been. However, in this case, each part of the scanner hood 5 and the like becomes large, which disadvantageously increases the size of the entire apparatus and increases component costs.

[0008]

Means for Solving the Problems] leaving the opening at the tip portion of the scanner main body elongated aperture through which light rays are formed
In a hand scanner having a structure in which a flexible scanner hood that covers an outer surface of a tip portion of the scanner body is fitted,
The inner surface of the opening in the longitudinal direction of the scanner hood and the scanner
A first fitting portion that fits in a direction substantially orthogonal to a fitting direction of the scanner body and the scanner hood is formed on a longitudinal opening outer peripheral surface of the body, and the scanner body and the scanner are formed.
The fitting direction and the fitting direction
Fits in substantially the same direction and fits with the opening of the scanner hood.
The opposite longitudinal base moves in a direction approximately perpendicular to the fitting direction
A second fitting portion for restricting the operation is formed.

[0009]

Therefore, the first fitting portion prevents the scanner hood from slipping into the scanner body in the fitting direction. Further, when scanning the bar code, the scanner hood slides on the object to which the bar code is attached, so that a force is applied to the scanner hood in a direction substantially the same as the fitting direction of the first fitting portion. The deformation is prevented by the second fitting portion, and the scanner hood is prevented from dropping from the scanner main body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 3 to 5 are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a pair of second fitting holes 20 as a part of the second fitting part are formed in the scanner main body 4, and a pair of the second fitting protrusions as another part of the second fitting part. 21 is formed on the scanner hood 5.
Here, the second fitting protrusion 21 is formed so as to protrude from an end surface of the scanner hood 5, and the second fitting hole 20 is formed at a position facing the second fitting protrusion 21 of the scanner main body 4. ing. A pair of protective cover positioning grooves 22 are formed at both ends of the protective cover 8, and protective cover positioning protrusions 23 that fit into the protective cover positioning grooves 22 are formed to protrude from the end surface of the step 9.

In such a configuration, when scanning the bar code, when the scanner hood 5 slides against the bar code-added product 15, the scanner hood 5 is forced to deform in the sliding direction. Receive. Here, the sliding direction, that is, the scanning direction of the hand scanner 1 is indicated by an arrow A in FIG. On the other hand, by the fitting of the second fitting projection 21 to the second fitting hole 20, the force for deforming the scanner hood 5 is received, and the deformation of the scanner hood 5 is prevented. In addition, the sliding of the scanner hood 5 with respect to the product 15 applies a force to the tip of the scanner hood 5 to deform in the sliding direction. And the displacement of the protective cover 8 with respect to the scanner main body 4 is prevented.

Accordingly, the displacement of the scanner hood 5 and the protective cover 8 with respect to the scanner main body 4 is prevented, and the barcode reading operation is facilitated. In addition, since the displacement of the scanner hood 5 and the like with respect to the scanner main body 4 is prevented by the fitting of the second fitting projection 21 to the second fitting hole 20, it is not necessary to increase the depth of the scanner hood 5. . Therefore, the scanner hood 5
And the like can be reduced in size, the size of the entire apparatus can be reduced, and the cost of parts can be reduced.

In the embodiment, the first fitting hole 10
And the second fitting protrusion 20 is formed on the scanner hood 5 side,
The first fitting hole 12 and the second fitting protrusion 21 may be formed on the scanner main body 4 side.

[0014]

According to the present invention, the leaving the opening at the tip portion of the scanner main body elongated opening through which light is formed
In a hand scanner having a structure in which a flexible scanner hood covering an outer surface of a tip portion of a scanner body is fitted, an inner surface of a longitudinal opening of the scanner hood and the scanner body are provided.
A first fitting portion that fits in a direction substantially orthogonal to the fitting direction of the scanner body and the scanner hood is formed on the outer peripheral surface of the opening in the longitudinal direction of the scanner body.
On the surface facing the insertion direction
Fits in one direction and is opposite to the opening of the scanner hood
The longitudinal base moves in a direction substantially perpendicular to the fitting direction
Since the formation of the second fitting portion for regulating the, during scanning of a bar code scanner which is covered on the outer surface of the scanner main body by sliding against the object barcoded
The hood deforms in the direction in which the first fitting section is released.
Force is applied, but the deformation is prevented by the second fitting part
To stably maintain the fitting state by the first fitting portion
Therefore, it is possible to prevent the scanner hood from dropping out of the scanner main body, thereby facilitating the reading operation of the barcode. Further, since it is not necessary to increase the depth of the scanner hood, the scanner hood or the like can be used. Can be reduced in size, and therefore, there is an effect that the size of the entire apparatus can be reduced and the parts cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a distal end portion of a scanner main body, a scanner hood, and a protective cover when an operation is performed on a bar code according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is an overall perspective view showing a conventional example.

FIG. 4 is an exploded perspective view of a distal end portion of a scanner main body, a scanner hood, and a protective cover.

FIG. 5 is a vertical sectional side view of a tip portion of a scanner main body, a scanner hood, and a protective cover when operating a bar code.

[Explanation of symbols]

 6 Opening 4 Scanner body 5 Scanner hood 1 Hand scanner 10, 12 First fitting part 20, 21 Second fitting part

Claims (1)

(57) [Claims] [Claim 1 wherein said scanner present leaving the opening at the distal end of the elongated scanner body having an opening formed in the passing light
In a hand scanner having a structure in which a flexible scanner hood for covering an outer surface of a body tip is fitted, an inner surface of a longitudinal opening of the scanner hood and a longitudinal direction of the scanner main body are arranged.
To the opening peripheral surface of the first fitting portion to be fitted in the fitting direction substantially perpendicular to the direction of the scanner hood and the scanner body
Formed and fitted between the scanner body and the scanner hood
Fits on the opposing surface in the same direction as the fitting direction
In the longitudinal direction opposite to the opening of the scanner hood
Restricts the base from moving in a direction substantially perpendicular to the fitting direction
A hand scanner, wherein a second fitting portion is formed.