JP4140200B2 - Portable information reader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable information reader having a function of reading information such as a barcode.
[0002]
[Prior art]
This type of portable information reading apparatus includes a box-shaped case configured by joining a container-shaped upper case and a container-shaped lower case. An example of a specific configuration of the joint portion between the upper case and the lower case in this case is shown in FIG. As shown in FIG. 5, a protrusion 3 a protrudes upward from the joint end surface portion 3 of the peripheral wall portion 2 of the lower case 1. The joint end surface portion 6 of the peripheral wall portion 5 of the upper case 4 is provided with a groove portion 6a into which the protruding portion 3a is fitted. Then, the upper case 4 and the lower case 1 are joined by fitting the protrusion 3 a of the lower case 1 into the groove 6 a of the upper case 4. As a result, a so-called double groove is formed at the joint between the upper case 4 and the lower case 1.
[0003]
[Problems to be solved by the invention]
In the above conventional configuration, when water is applied to the upper surface of the case (upper case 4), the water may adhere to the joint portion of the lower case 1. In this case, as shown in FIG. 5, the water 7 adheres along the joint surface where the joint end surface portion 6 of the peripheral wall portion 5 of the upper case 4 and the joint end surface portion 3 of the peripheral wall portion 2 of the lower case 1 abut. And become accumulated. Then, the accumulated water 7 eventually passes through the gap between the joint end surface portion 3 and the joint end surface portion 6 and the gap between the protruding portion 3a and the groove portion 6a and enters the inside of the case. There was an intrusion.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a portable information reading device that can prevent water from entering the inside from a joint portion between an upper case and a lower case.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the protruding portion is provided on the joining end surface portion of the peripheral wall portion of the lower case, and the groove portion is provided so that the protruding portion is fitted to the connecting end surface portion of the peripheral wall portion of the upper case. And since the slope part was provided so that the outer edge part of the joint end part of the peripheral wall part of the lower case was cut obliquely, even if water splashes on the upper surface of the upper case, the water will remain on the slope part Since it is guided and flows downward, water does not accumulate on the joint surface of the upper case and the lower case. Accordingly, it is possible to prevent water from entering the inside from the joint portion between the upper case and the lower case.
[0006]
According to the second aspect of the present invention, since the slope portion is provided so as to be obliquely cut at the outer edge of the joining end portion of the peripheral wall portion of the upper case, the water applied to the upper surface of the upper case And since it is guided by the slope of the lower case and flows down, it does not accumulate on the joint surface of the upper case and the lower case. Further, even when the portable information reader is used upside down and water is splashed on the upper surface of the lower case, water does not collect on the joint surface of the upper case and the lower case.
[0007]
According to the invention of claim 3, since the drainage groove whose upper end is continuous with the slope part is provided on the outer side surface of the peripheral wall part of the lower case, the water applied to the upper surface of the upper case is the slope part and the drainage groove. It will be easier to flow down. For this reason, water does not accumulate further on the joint surface between the upper case and the lower case.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment in which the present invention is applied to a portable barcode reader will be described below with reference to FIGS. 2A, 2B, and 2C are three views showing the overall configuration of the portable barcode reader 11 of this embodiment. As shown in FIG. 2, the shape of the case 12 of the portable barcode reader 11 is a thin rectangular box. On the upper surface of the case 12, for example, a display 13 made of an LCD, a key portion 14 made of various operation keys, and an LED 15 for indicating normal completion of the reading operation are arranged.
[0009]
A reading port (not shown) is provided at the left end in FIGS. 2A and 2B on the lower surface of the case 12. Further, an illumination LED, a CCD sensor, a lens, a mirror, a control circuit, a battery (none of which are shown), and the like are disposed inside the case 12. The illumination light emitted from the illumination LED is applied to an external barcode via a lens and a reading port. The reflected light reflected by the barcode is configured to be received by the CCD sensor via the reading port and the lens.
[0010]
The control circuit controls the operation of the portable barcode reader 11 and has a function of performing a reading process (decoding process) while processing a light reception signal received by the CCD sensor. I have. In this case, data such as a reading result is stored in a memory inside the control circuit, and the portable barcode reader 11 is connected to a host device (such as a personal computer) (not shown) via a connection cable or the like. In addition, it is configured to be transmitted to the host device.
[0011]
The data such as the reading result may be transmitted from the portable barcode reader 11 to the host device by wireless communication means (PHS, mobile phone, optical communication, etc.). In this case, the wireless communication means may be disposed in the case 12 or may be configured to be externally attached.
[0012]
The case 12 is configured by joining an upper case 16 having a shallow rectangular container shape with an open bottom surface and a lower case 17 having a shallow rectangular container shape having an open top surface. Here, a specific configuration of a joint portion between the upper case 16 and the lower case 17 is shown in FIG. As shown in FIG. 1, a protruding portion 21 a is provided on the joining end surface portion 21 of the peripheral wall portion 20 of the lower case 17 so as to protrude upward. The protruding portion 21 a is formed over the entire circumference of the peripheral wall portion 20 of the lower case 17.
[0013]
Further, the joint end surface portion 19 of the peripheral wall portion 18 of the upper case 16 is provided with a groove portion 19a into which the protruding portion 21a is fitted. The groove portion 19 a is formed over the entire circumference of the peripheral wall portion 18 of the upper case 16. In the case of the above configuration, the upper case 16 and the lower case 17 are joined by fitting the protruding portion 21 a of the lower case 17 into the groove portion 19 a of the upper case 16. Thereby, the joint part of the upper case 16 and the lower case 17 forms what is called a double groove. The upper case 16 and the lower case 17 are fixed by, for example, screwing.
[0014]
Here, as shown in FIG. 1, a slope portion 21 b is provided on the outer edge portion of the joining end surface portion 21, which is the joining end portion of the peripheral wall portion 20 of the lower case 17, so as to be cut obliquely. . As shown in FIG. 2, the slope portion 21 b is formed over the entire circumference of the peripheral wall portion 20 of the lower case 17. Further, the angle α (that is, the cut angle) formed by the inclined surface portion 21b and the joining end surface portion 19 of the upper case 16 is, for example, 45 degrees. The angle α may be set to be larger than 45 degrees or smaller than 45 degrees, for example, and may be set to an appropriate angle at which water easily flows by performing an experiment or the like. It ’s fine.
[0015]
In the present embodiment having such a configuration, the protruding portion 21a is projected from the joining end surface portion 21 of the peripheral wall portion 20 of the lower case 17, and the groove portion 19a is provided to the joining end surface portion 19 of the peripheral wall portion 18 of the upper case 16. The slope 21 b is provided on the outer edge of the joint end of the peripheral wall 20 of the lower case 17. In the case of this configuration, when water is applied to the upper surface of the upper case 16, the water is guided to the slope portion 21 a of the lower case 17 and flows downward, so that the upper case 16 is different from the conventional configuration (see FIG. 5). And water does not adhere to the joint surface of the lower case 17 and accumulate. Accordingly, it is possible to reliably prevent water from entering the inside from the joint portion between the upper case 16 and the lower case 17.
[0016]
In addition, in the said Example, although it comprised so that the slope part 21b of the lower case 17 might be formed diagonally from the root part of the protrusion part 21a in the joining end surface part 21 of the surrounding wall part 20 of the lower case 17, it replaced with this. In addition, the joint end surface portion 21 may be formed obliquely from a position slightly shifted outward from the root portion of the protruding portion 21a.
[0017]
In the above embodiment, the protrusion 21a is provided in the lower case 17, and the groove 19a is provided in the upper case 16. However, the present invention is not limited to this, and the groove is provided in the lower case. You may comprise so that the protrusion part 19a may be provided in a case. And also in this structure, what is necessary is just to set it as the structure which provides a slope part like the 1st Example in the joining end surface part of a lower case. Furthermore, in the said Example, although the slope part 21b of the lower case 17 was made into the planar shape, it may replace with this and may have a rounded shape (curved surface shape).
[0018]
Furthermore, in the above embodiment, the reading port is arranged at one end of the lower surface portion of the case 11 (lower case 17). However, the present invention is not limited to this, and the reading port is arranged on the side surface of the case 11. (For example, you may comprise so that it may arrange | position in the side part of the left end side in FIG. 2 (a) and (b)). In the case of this configuration, the reading port is disposed so as to straddle both the side walls of the upper case 16 and the lower case 17, so that the gap between the reading port and the side walls of the cases 16, 17 is set. It is preferable to be configured to seal with rubber packing or the like.
[0019]
FIG. 3 is a diagram showing a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals. In the second embodiment, the inclined surface portion 19b is obliquely cut at the outer edge portion of the joining end surface portion 19 which is the joining end portion of the peripheral wall portion 18 of the upper case 16. The cut angle of the slope portion 19b (the angle formed by the slope portion 19b and the joining end surface portion 21 of the lower case 17) is the same as the cut angle of the slope portion 21b of the lower case 17 of the first embodiment. In addition, you may comprise so that the cut angle of the said two slope parts 19b and 21b may differ.
[0020]
The configurations of the second embodiment other than those described above are the same as the configurations of the first embodiment. Therefore, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, in the second embodiment, since the slope portion 19b is provided on the outer edge of the joint end portion of the peripheral wall portion 18 of the upper case 16, the water applied to the upper surface of the upper case 16 Since it is guided by the slopes 19b and 21b of the case 17 and flows downward, water does not accumulate on the joint surface between the upper case 16 and the lower case 17. Further, even when the portable barcode reader 1 is used upside down and water is applied to the upper surface of the lower case 17, the water flows down as described above. And the bottom case 17 will not accumulate on the joint surface.
[0021]
FIG. 4 is a diagram showing a third embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals. In the third embodiment, as shown in FIGS. 4A and 4B, a plurality of drain grooves 20 b whose upper ends are continuous with the slope portion 21 are formed on the outer side surface 20 a of the peripheral wall portion 20 of the lower case 17. It comprised so that it might provide. In the case of the present embodiment, for example, three drain grooves 20b are provided on the outer side surface 20a in the longitudinal direction of the peripheral wall portion 20 of the lower case 17, and the outer side surface 20a in the short direction is illustrated on the outer side surface 20a in the short direction. However, for example, two drain grooves 20b are provided. Other configurations of the third embodiment are the same as the configurations of the first embodiment.
[0022]
Accordingly, in the third embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, in the third embodiment, since the drainage groove 20b whose upper end is continuous with the inclined surface portion 21a is provided on the outer side surface 20a of the peripheral wall portion 20 of the lower case 17, the water applied to the upper surface of the upper case 16 is It is guided by the slope portion 21a and the drainage groove 20b and easily flows down. Accordingly, the surface of the upper case 16 and the lower case 17 cannot be further collected.
[0023]
In each of the above embodiments, the present invention is applied to a rectangular box shape in which the overall shape of the portable barcode reader 11 is straight. However, the present invention is not limited to this. Even if it is applied to a configuration in which the end portion (tip portion) on the reading port side of the portable barcode reader is bent obliquely downward so that the reading port of the reading device is directed obliquely downward good.
[0024]
In each of the above embodiments, the present invention is applied to the portable barcode reader 11 that reads a barcode as information. However, the present invention is not limited to this. For example, a portable information reader that reads a two-dimensional code or the like. You may apply to. Furthermore, in each of the above embodiments, the outer surfaces of the upper case 16 and the lower case 17 may be configured to be treated so as to have water repellency.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of the present invention, and is a longitudinal side view of a joint portion between an upper case and a lower case. FIG. 2 (a) is a top view of a portable barcode reader; b) is a front view of the portable barcode reader, and FIG. 3C is a side view of the portable barcode reader. FIG. 3 is a view corresponding to FIG. 1 showing a second embodiment of the invention. FIG. 5A is a front view of a portable barcode reader, and FIG. 5B is a partial bottom view of the portable barcode reader. FIG. Equivalent figure [Explanation of symbols]
11 is a portable barcode reader (portable information reader), 12 is a case, 13 is a display, 16 is an upper case, 17 is a lower case, 18 is a peripheral wall, 19 is a joint end surface, 19a is a groove, 19b Is a slope portion, 20 is a peripheral wall portion, 20b is a drainage groove, 21 is a joining end surface portion, 21a is a ridge portion, and 21b is a slope portion.

Claims (3)

In a portable information reader comprising a case constructed by joining an upper case and a lower case,
A ridge protruding from the joint end surface of the peripheral wall of the lower case;
A groove portion provided so that the protruding portion is fitted to the joint end surface portion of the peripheral wall portion of the upper case;
A portable information reading apparatus comprising: a slope portion provided so as to be obliquely cut at an outer edge portion of the joint end portion of the peripheral wall portion of the lower case. The portable information reader according to claim 1, further comprising a slope portion provided so as to be obliquely cut at an outer edge portion of the joint end portion of the peripheral wall portion of the upper case. The portable information reader according to claim 1 or 2, further comprising a drainage groove provided on an outer side surface of the peripheral wall portion of the lower case and having an upper end continuous with the slope portion.

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