JP2567149Y2 - Barcode 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 bar code scanner, and more particularly, to a bar code scanner having a cap which can be easily attached and detached.

[0002]

2. Description of the Related Art A conventional bar code scanner will be described with reference to FIG. The barcode scanner shown in FIG. 3 is a type of barcode scanner in which the cap 10 of the barcode scanner can be attached to and detached from the case 20 of the barcode scanner.

The cap 10 has an engaging claw 11 formed thereon, and the engaging claw 11 further has a protruding portion 12 for generating an engagement feeling. An opening 13 for light emission is formed at the tip of the cap 10. Case 2
Reference numeral 0 denotes an upper case 21 and a lower case 22 which are integrated by a fitting concave portion and an elastic claw portion elastically fitted to the fitting concave portion. The sensor is housed in the case 20.

In order to connect the cap 10 to the case 20, first, the engaging claw portion 11 is properly fitted into the concave portion 23 of the case 20, and the cap 10 is rotated with respect to the case 20 to rotate the engaging claw. The unit 11 is integrated by engaging the portion 11 with an engagement groove formed between the flange portion 24 of the case 20 and the case 20 main body. The rotation stops when the engagement-feel-generating projection 12 is fitted into the engagement-feel-generating recess 25 formed in the engagement groove.

[0005] The bar code scanner shown in FIG. 4 is also of a type in which the cap 10 can be attached to and detached from its case 20. The bar code scanner shown in FIG. 4 has a case 20 in which the female thread 15 is threaded on the cap 10 side and the female thread 15 is screwed into the female thread 15 of the cap 10.
Male screw member 30 obtained by threading a male screw portion 31 separate from
Are prepared and fitted to the case 20 side, and the cap 10 is attached to the case 20 via the male screw member 30.

[0006]

The configuration of the engagement of the cap 10 with the case 20 in the conventional example of the bar code scanner is substantially as described above. Here, in the case of the barcode scanner shown in FIG. 3, the cap 10 is rotated with respect to the case 20 so that the engagement claw 11 is formed between the collar 24 of the case 20 and the case 20 main body. When engaging and holding in the mating groove, the cap 10
The upper case 21 and the lower case 2 butt-joined by the engagement-feel-generating projections 12 further projecting from
That is, the rotation is performed in a state where a force for pressing and opening them is applied to the second and the second. Cap 10 to case 20
The same applies to the case of turning with respect to and removing from the case 20.

The bar code scanner is used while rubbing the bar code printed on the paper surface with the tip of the cap 10 having the light emission opening 13 formed therein. Therefore, paper and other debris are very liable to be clogged in the light emission opening 13.
Must be removed by removing it from the The number of times the cap 10 is attached and detached is large. Each time the cap 10 is attached and detached, a force is applied to the upper case 21 and the lower case 22 to open them, or this force is released. This leads to deformation and breakage, which is not desirable.

In the case of the bar code scanner shown in FIG. 4, it is necessary to form a male screw member 30 to be screwed into the female screw portion 15 of the cap 10 separately from the case 20. Forming the male screw member 30 separately from the case 20 increases the number of parts, which is disadvantageous. And, the molding of the male screw member 30 is not so easy, and its attachment and detachment are more difficult to handle as compared with the fitting.

This invention is to provide a bar code scanner which can solve the above-mentioned problems and can easily attach and detach a cap.

A case 20 is provided in which an upper case 21 and a lower case 22 are elastically fitted to each other.
In a bar code scanner having a cap 10 for bayonet coupling to the housing 10 and housing the sensor 1 in a case 20, a rear end portion of the cap 10 is formed to protrude in the axial direction.
Base 14 and collar 15 bent at a right angle from the tip
A flange 11 of a cap 10 is formed, and a light emitting opening 13 is formed at the tip of the cap 10.
The case 20 has an engagement-feel-generating projection 12 formed on the inner surface of the cap near the rear end face and protruding in the radial direction of the cap.
At the front ends of the upper case 21 and the lower case 22, respectively.
A collar 26 is formed, and the flange of the cap 10 is
An arc-shaped groove into which the flange portion 15 of the eleventh is fitted is formed, and the engagement feeling generating convex portion 12 of the cap 10 is click-engaged with the front ends of the upper case 21 and the lower case 22 of the case 20. Protrusions 24 forming the mating recesses 25 are formed opposite to each other. When the rear end face of the cap 10 and the front end face of the case 20 abut against each other, the engagement feeling of the cap 10 in the axial direction is generated. A bar code scanner having a positional relationship corresponding to the convex portion 12 was configured.

[0011]

An embodiment of the present invention will be described with reference to FIGS. Here, in the barcode scanner of the present invention, it is assumed that reference numerals common to the conventional example are members corresponding to each other. FIG. 1A is a partial sectional view of the cap of the present invention, and FIG. 1B is a view of the cap as viewed from the rear. FIG. 2A is a partial sectional view of the case, FIG.
(B) is the figure which looked at this case from the front.

The collar 11 of the cap 10 of the bar code scanner of the present invention is formed to protrude in the axial direction from the rear end face of the cap 10. The collar 11 includes a protruding base 14 and a flange 15 bent at a right angle from the base 14. A projection 12 for generating a sense of engagement is formed so as to protrude from the inner surface of the cap near the rear end surface of the cap 10 in the radial direction of the cap.

At the front end of the case 20, an engaging concave portion 25 is provided with which the engaging feeling generating convex portion 12 of the cap 10 click-engages.
Are formed facing each other. When the rear end surface of the cap 10 and the front end surface of the case 20 abut against each other, the projecting portion 24 has a positional relationship corresponding to the engagement feeling generating convex portion 12 of the cap 10 in the axial direction. Reference numeral 23 denotes a recess into which the flange 15 of the cap 10 is inserted. Reference numeral 26 denotes a collar 26 formed on each of the upper case 21 and the lower case 22. On the back side of the collar, an arc-shaped groove into which the collar 15 of the collar 11 of the cap 10 fits is formed. The arc-shaped groove communicates with the concave portion 23 into which the brim portion 15 is inserted.

Here, the procedure for fitting and fixing the cap 10 to the case 20 will be described. First, the flange 15 of the cap 10 is inserted into the recess 23 of the case 20. next,
The cap 10 is rotated by a certain angle with respect to the case 20 while the collar 15 is guided by the arc-shaped groove formed on the back side of the collar 26. At this time, the brim 15 of the cap 10 is
A convex portion for generating a feeling of engagement which faces the bottom surface of the circular groove;
12 is opposed to the outer peripheral surface of the protrusion 24,
Rotate while supporting the inner and outer peripheral surfaces of 20, respectively
You. This rotation is performed by the convex portion 12 for generating an engagement feeling of the cap 10.
Stops when it fits into the engagement recess 25. This end
At the time of stopping, the convex portion 12 for generating the engagement feeling is
Clear click by elastically mating against
Feeling and the start and end of mating can be reliably recognized.
You. In this state, the flange 15 of the cap 10 is
The convex portion 1 for generating an engagement feeling of the cap 10 while being positioned in the arc-shaped groove formed on the back side of the collar 26 of the base 20.
2 is fitted in an engagement recess 25 of a protruding portion 24 formed at the front end of the case 20.

[0015]

As described above, in the bar code scanner of the present invention, when fitting and fixing the cap 10 to the case 20, the brim portion 15 of the cap 10 is inserted into the concave portion 23 of the case 20, and then the brim portion 15 Is rotated by a certain angle with respect to the case 20 while being guided by an arc-shaped groove formed on the back side of the collar 26, and the engagement feeling generating projections of the caps 10 in a positional relationship corresponding to each other in the axial direction. The part 12 and the engaging recess 25 of the case 20 are fitted. The projection 12 for generating the engagement feeling is formed by the engagement recess 25.
Immediately before fitting, the convex portion 12 climbs over the raised portion constituting the engaging concave portion 25, and then the convex portion 12 rapidly falls into the engaging concave portion 25 to generate a feeling of engagement. Reach.

In this case, the protruding portions 24 for forming the engaging concave portions 25 formed opposite to each other are strongly pressed by the engaging-feeling generating convex portions 12 of the cap 10 in a direction in which they come close to each other. Similarly, the upper case 21 and the lower case 22 receive pressure in a direction approaching each other.
Accordingly, the case 20 is not deformed or damaged due to the force of pressing and opening the upper case 21 and the lower case 22 each time the cap is attached or detached.

Further , the brim portion 15 of the cap is shaped like the arc.
The convex portion 12 for generating an engagement feeling is opposed to the bottom surface of the groove.
Opposing the outer peripheral surface of the protruding portion 24,
It rotates while supporting the inner peripheral surface and the outer peripheral surface. form
For the split case 20, which tends to be unstable,
The cap 10 is easy to maintain while maintaining the shape of
Can be attached and detached. As described above,
According to the plan, Barco is likely to be unstable shape
Cap for the split case 20 of the scanner
10 can be easily attached and detached in a stable manner.
To improve the durability of the cap 10 and the case 20.
And we can do it.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a cap of the present invention;
(A) is a partial sectional view of the cap, and (b) is a view of the cap as viewed from the rear.

FIG. 2 is a diagram for explaining a case of the present invention;
Is a partial cross-sectional view of the case, and (b) is a view of the case as viewed from the front.

FIG. 3 illustrates a conventional example.

FIG. 4 is a diagram illustrating another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sensor 10 Cap 12 Protrusion for generating a feeling of engagement 13 Opening for light emission 20 Case 21 Upper case 22 Lower case 24 Projection 25 Engagement recess

Claims (1)

(57) [Scope of request for utility model registration] An upper case (21) and a lower case (22) are resiliently fitted to each other and a case (20) is provided. In the code scanner, the rear end of the cap 10 is formed to protrude in the axial direction.
From the base part 14 and the brim part 15 bent at a right angle from the tip
A flange 11 of the cap 10 is formed, and the cap 10 has an opening 13 for light emission at the tip, and a projection for generating an engagement feeling formed on the inner surface of the cap near the rear end face of the cap 10 in a radial direction of the cap. 12 and upper case 21 and lower case 22 of case 20 respectively.
A collar 26 is formed at the front end of the
An arc-shaped groove into which the brim portion 15 of the brim 11 fits is formed.
In addition, at the front ends of the upper case 21 and the lower case 22 of the case 20, projections 24 forming engagement recesses 25 in which the engagement feeling generating projections 12 of the cap 10 click-engage are opposed to each other. The projection 24 is formed in a positional relationship corresponding to the engagement feeling generating projection 12 of the cap 10 in the axial direction when the rear end face of the cap 10 and the front end face of the case 20 abut against each other. A barcode scanner that features.