JP2010211562A - Personal digital assistance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a personal digital assistance allowing suppression of false detection to opening of a casing. <P>SOLUTION: The personal digital assistance includes: a rib 14 projecting to an installation direction on an inner face side of a front case 12; a plate spring member 22 having one end 22a fixed to a control board 20 installed in a rear case 13, contacting, in a state that the plate spring member 22 is elastically deformed from an abutment direction, with the rib 14 in an installation state; and a contact switch 21 contacting with the plate spring member 22 in the installation state from the abutment state, capable of detecting a noncontact state with the plate spring member 22 restored by releasing the contact with the rib 14. By a control circuit, the opening of the casing 11 is detected according to the noncontact state detected by the contact switch 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable information terminal having a case opening detection function.

  Conventionally, as a technique related to a portable information terminal having a case opening detection function, a product container opening history management means shown in Patent Document 1 below is known. The product container opening history management means includes a protrusion portion formed so as to protrude in the assembly direction inside the first case when the first case and the second case are assembled for sealing. Since the push-type cord output switch is pressed in the assembling direction, the opening of the product is detected according to the signal output from this switch.

  In the secret information storage device shown in Patent Document 2 below, the detection switch is fixed to the lower cabinet through the wiring board in the vicinity of the engaging portion of the upper cabinet and the lower cabinet, and both cabinets are assembled. The actuator of the detection switch is pressed in the assembling direction by the upper cabinet. When the product is opened and the engagement between the upper cabinet and the lower cabinet is released, the actuator is activated to detect the opening of the product according to the output from the detection switch.

JP 2000-149079 A Japanese Utility Model Publication No. 61-168438

  However, in the configuration shown in Patent Document 1, the switch is pressed in the assembling direction by the protruding portion, so that the first case and the second case are assembled by the impact such as dropping in the first case and the second case. When the case and the second case are displaced in the assembly direction, the pressing by the protruding portion is released, and the opening of the housing is erroneously detected even though the housing is not opened. There's a problem. This problem of erroneous detection may also occur in the configuration shown in Patent Document 2 described above.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a portable information terminal that can suppress erroneous detection of opening of a housing.

  In order to achieve the above object, in the portable information terminal of claim 1, the control circuit for controlling the acquired acquisition information, the storage means for storing the acquisition information, the first case, A portable information terminal having a second case and a housing that houses the control circuit and the storage means in an assembled state in which both cases are assembled, and is provided on the inner surface side of the first case The projecting member projecting in the assembling direction of the first case and the second case, and one end is fixed to the second case, and the elastic member side contact portion on the other end side than the one end An elastic member that contacts and presses against a protruding member side contact portion of the protruding member in the assembled state in a state of being elastically deformed from a direction orthogonal to the assembling direction; and the elastic member in the assembled state For the assembly direction A contact sensor capable of detecting a non-contact state with respect to the elastic member, which has been contacted from a direction orthogonal to each other and restored by releasing the contact with the protruding member, and the non-contact state detected by the contact sensor Opening detection means for detecting opening of the housing.

  According to a second aspect of the present invention, in the portable information terminal according to the first aspect, the contact sensor contacts the one end side of the elastic member with respect to the elastic member side contact portion in the assembled state. It is characterized by that.

  According to a third aspect of the present invention, in the portable information terminal according to the second aspect, the elastic member is formed with a curved portion between a contact portion with the contact sensor and the elastic member side contact portion. Features.

  According to a fourth aspect of the present invention, in the portable information terminal according to any one of the first to third aspects, the contact sensor is supplied with power only in the non-contact state and detects a non-contact state with respect to the elastic member. It is characterized by that.

  Invention of Claim 5 is the portable information terminal as described in any one of Claims 1-4. As for the said protrusion member, the protrusion member side opposing surface which opposes the said elastic member is rather than the said protrusion member side contact part. The second case side is formed so as to be separated from a plane including the protruding member side contact portion.

  According to a sixth aspect of the present invention, in the portable information terminal according to any one of the first to fifth aspects, the elastic member has an elastic member side facing surface that faces the protruding member rather than the elastic member side contact portion. The first case side is formed so as to be separated from a plane including the elastic member side contact portion.

  In the first aspect of the invention, the projecting member projecting in the assembling direction on the inner surface side of the first case, and the assembling direction with respect to the projecting member in the assembled state with one end fixed to the second case Restoration is achieved by releasing the contact between the elastic member that contacts and presses in an elastically deformed state from the orthogonal direction and the elastic member in the assembled state from the direction orthogonal to the assembled direction and is released from the protruding member. And a contact sensor capable of detecting a non-contact state with respect to the elastic member. Then, the opening detection means detects the opening of the housing according to the non-contact state detected by the contact sensor.

  Thus, in the assembled state, the contact sensor is in contact with the elastic member, and even when the housing vibrates, the vibration or the like is absorbed by the elastic member. It is possible to prevent erroneous detection by the contact sensor without being in a non-contact state with respect to the elastic member. Since the opening of the housing can be detected accurately in this way, unauthorized use of the acquired information can be reliably prevented by deleting the acquired information stored in the storage means.

In particular, in the assembled state, the elastically deformed elastic member contacts the protruding member in a direction perpendicular to the assembling direction, so that an impact caused by dropping acts on the housing, and the first case and the second case are assembled. Even if the protruding member and the elastic member are shifted in the assembling direction by shifting in the direction, the elastic deformation state of the elastic member due to contact with the protruding member is maintained. As described above, since the elastic deformation state of the elastic member is maintained in the assembled state, the contact sensor is brought into contact with the elastic member from the direction orthogonal to the assembling direction to detect the contact state. Since the contact state of the contact sensor with respect to the elastic member is maintained even when the first case and the second case are displaced in the assembly direction as described above, it is possible to suppress erroneous detection of the contact sensor due to impact caused by dropping or the like. .
Therefore, it is possible to suppress erroneous detection for opening the housing.

  In the invention of claim 2, since the contact sensor is in contact with one end side of the elastic member side contact portion of the elastic member in the assembled state, the contact sensor is closer to the other end side than the elastic member side contact portion. Compared to the case of contact with the contact sensor, the contact part of the elastic member that contacts the contact sensor is less likely to vibrate, and transmission of vibrations etc. to the contact sensor via the protruding member is suppressed. Can be suppressed.

  In the invention of claim 3, since the elastic member is formed with a curved portion between the contact portion with the contact sensor and the elastic member side contact portion, vibration or the like via the protruding member is suppressed at the curved portion. Therefore, erroneous detection of the contact sensor can be reliably suppressed.

  In the invention of claim 4, since the contact sensor is supplied with power only in the non-contact state and detects the non-contact state with respect to the elastic member, power is not supplied in the contact state, that is, in the assembled state. As compared with the case where power is supplied to the battery, power saving can be achieved.

  In the invention of claim 5, the protruding member is formed so that the protruding member side facing surface facing the elastic member is separated from the plane including the protruding member side contact portion toward the second case side than the protruding member side contact portion. Therefore, when assembling both cases, the projecting member presses the elastic member on the projecting member side facing surface, so that the projecting member side facing surface serves as a guide surface in a direction in which the elastic member approaches the contact sensor. Gradually elastic deformation. Thereby, compared with the case where the second case side is formed so as to be along the plane including the protruding member side contact portion relative to the protruding member side contact portion of the protruding member side facing surface, the elastic member is elastically deformed smoothly. Since the friction between the members is also suppressed, the work of assembling both cases can be further facilitated.

  In the invention of claim 6, the elastic member is formed such that the elastic member side facing surface facing the protruding member is separated from the plane including the elastic member side contact portion toward the first case side than the elastic member side contact portion. Therefore, when assembling both cases, the elastic member side facing surface acts as a guide surface by the protruding member pressing the elastic member side facing surface, and the elastic member is gradually elastically deformed in the direction approaching the contact sensor. I will do it. As a result, the elastic member is smoothly elastically deformed as compared with the case where the first case side is formed along the plane including the elastic member side contact portion rather than the elastic member side contact portion of the elastic member side facing surface. Since the friction between the members is also suppressed, the work of assembling both cases can be further facilitated.

It is a partial sectional view showing portable information terminal 10 concerning this embodiment. It is a partial cross section figure by the cut surface equivalent to the 2-2 line of FIG. 3A is a partial cross-sectional view showing the positional relationship between the rib 14 and the leaf spring member 22 before assembly, and FIG. 3B shows the position between the rib 14 and the leaf spring member 22 after assembly. It is a partial sectional view showing a relationship. 4A is a partial cross-sectional view taken along the line 4A-4A in FIG. 3A, and FIG. 4B is a cross section taken along the line 4B-4B in FIG. 3B. FIG. It is a partial cross section figure which shows the modification of the portable information terminal 10 which concerns on this embodiment.

  Hereinafter, an embodiment in which a portable information terminal of the present invention is embodied will be described with reference to the drawings. The portable information terminal 10 is configured, for example, as a settlement terminal that reads an IC card or the like, or an optical information reader such as a barcode reader or a two-dimensional code reader. In the following, the case where the present invention is applied to a payment terminal will be described as an example, but other types of portable information terminals such as an optical information reader can be similarly configured.

  As shown in FIG. 1, the portable information terminal 10 is configured such that various electrical components such as a control board 20, an unillustrated power source, and the like are accommodated in a casing 11 including a front case 12 and a back case 13. Yes. The electrical configuration in the housing 11 can be substantially the same as that of a known card reader. The housing 11, the front case 12, and the back case 13 correspond to examples of “housing”, “first case”, and “second case” recited in the claims.

  A flat rib 14 is formed on the inner surface side of the front case 12 so as to protrude in a direction in which the front case 12 and the back case 13 are assembled (hereinafter referred to as an assembly direction). The rib 14 has a surface on the front end side (back side case 13 side) with respect to a portion (hereinafter referred to as a rib side contact portion 14a) indicated by reference numeral 14a on one side in the left-right direction (hereinafter referred to as a contact direction) in FIG. It is formed so as to be separated from the plane including the rib side contact portion 14a. In the drawing, the right side is also referred to as one side and the left side is also referred to as the other side. In addition, the rib 14 and the rib side contact part 14a are corresponded to an example of the "projection member" and the "projection member side contact part" as described in a claim.

  Specifically, the rib 14 is formed such that the width in the abutting direction is gradually narrower toward the tip side than the rib side contact portion 14a, and is about half of the root part at the tip part. Here, in the rib 14, one side in the contact direction of the gradually narrowing portion is defined as the inclined portion 14b, and one side in the contact direction of the tip portion is defined as the tip portion 14c. The rib 14 is formed such that one side of the contact direction from the tip side is a tip portion 14c, an inclined portion 14b, a rib side contact portion 14a, a connecting surface between the rib side contact portion 14a and the inclined portion 14b, an inclined portion 14b, The connecting surface with the tip portion 14c and the connecting surface between the tip portion 14c and the tip end portion are formed so as to be connected in a curved manner (see FIG. 1).

  The control board 20 is fixed to the inner surface side of the back case 13, and a control circuit (not shown) mounted on the control board 20 executes a predetermined program on payment-related data acquired from an IC card or the like. Is processed and stored in an unillustrated memory or the like. The control circuit and the memory of the control board 20 correspond to an example of “control circuit” and “storage means” recited in the claims.

  A contact switch 21 that outputs a signal to the control circuit in response to opening of the housing 11 is mounted on the control board 20, and a leaf spring member 22 is fixed at one end 22a thereof. Note that the control circuit functions as an opening detection unit in response to a signal from the contact switch 21.

  In the assembled state in which the front case 12 and the back case 13 are assembled, the leaf spring member 22 is elastically deformed and is one side in the contact direction with respect to the rib side contact portion 14a of the rib 14 at the spring side contact portion 22b. It is formed so as to press from. And the leaf | plate spring member 22 will deform | transform and restore | restore in a contact direction, when the housing | casing 11 is open | released and the contact with the rib 14 is cancelled | released. In this restored state, the spring-side contact portion 22b is positioned so as to contact the tip portion 14c of the rib 14 during assembly. In addition, the leaf | plate spring member 22 and the spring side contact part 22b are corresponded to an example of the "elastic member" and the "elastic member side contact part" as described in a claim.

  A guide portion 22c is provided on the upper end side (front side case 12 side) of the spring side contact portion 22b of the leaf spring member 22. The guide portion 22c is formed so as to be inclined such that the upper surface (the facing surface facing the rib 14) is separated from the plane including the spring-side contact portion 22b toward the upper side of the spring-side contact portion 22b.

  The contact switch 21 contacts from one side in the contact direction on the one end 22a side of the spring side contact portion 22b of the leaf spring member 22 that is elastically deformed by pressing the rib 14 (see FIG. 2). And the contact switch 21 is arrange | positioned so that the non-contact state with respect to the leaf | plate spring member 22 of a restoring state may be detected. The contact switch 21 is configured to supply power only in the non-contact state, detect the non-contact state, and output a signal corresponding to the non-contact state to the control circuit. The normal closed type that turns off when pressed. The contact switch 21 may contact from one side in the contact direction on the other end side of the spring-side contact portion 22b in the leaf spring member 22 that is elastically deformed by pressing the rib 14.

Next, in the portable information terminal 10 configured as described above, an assembly process of the front case 12 and the back case 13 will be described with reference to FIGS. 3 and 4.
First, the control board 20 to which the contact switch 21 and the leaf spring member 22 are attached is prepared, and the control board 20 is fixed to the back side case 13. And in order to assemble this back side case 13 and the front side case 12, the front side case 12 is brought close to the back side case 13 from the assembling direction. At this time, as shown in FIGS. 3 (A) and 4 (A), the leaf spring member 22 is elastically deformed so that the guide portion 22c contacts the rib 14 and is guided to one side in the assembly direction. Thereby, the spring side contact part 22b of the leaf | plate spring member 22 contacts the front-end | tip part 14c of the rib 14 which opposes. At this time, the contact switch 21 does not detect a contact state with the leaf spring member 22.

  Further, when the front case 12 and the back case 13 are brought closer to the assembly direction, the leaf spring member 22 comes into contact with the inclined portion 14b of the opposing rib 14 at the guide portion 22c and is further guided to one side in the assembly direction. It is elastically deformed. When the assembly of the front side case 12 and the back side case 13 is completed, as shown in FIGS. 3 (B) and 4 (B), the rib side contact of the rib 14 facing the spring side contact portion 22b of the leaf spring member 22 is performed. It contacts the part 14a. At this time, the contact switch 21 comes into contact with the leaf spring member 22 from one side in the assembly direction to detect the contact state.

  Thus, when the front side case 12 and the back side case 13 are assembled, the leaf spring member 22 is guided by the guide portion 22c, the tip end portion 14c of the rib 14 and the inclined portion 14b, and at the spring side contact portion 22b. Since it contacts the rib side contact part 14a, the leaf | plate spring member 22 can be elastically deformed smoothly in an assembly direction, and the friction between the leaf | plate spring member 22 and the rib 14 can be suppressed.

  In the portable information terminal 10 in which the front case 12 and the back case 13 are assembled as described above, the leaf spring member 22 is assembled when the casing 11 is opened and the pressure on the leaf spring member 22 by the rib 14 is released. Deforms in the other direction. For this reason, the contact switch 21 outputs a signal corresponding to the non-contact state with respect to the restored leaf spring member 22, and the opening of the housing 11 is detected by the control circuit of the control board 20 based on this signal.

  On the other hand, in the assembled portable information terminal 10, even when the housing 11 vibrates, the vibration or the like is absorbed by the leaf spring member 22. It is possible to prevent erroneous detection of the non-contact state with respect to the spring member 22.

  Further, since the elastically deformed leaf spring member 22 contacts the rib 14 in the abutting direction in the assembled state, an impact or the like due to dropping acts on the housing 11 so that the front case 12 and the back case 13 are assembled in the assembling direction. Even if the rib 14 and the leaf spring member 22 are displaced in the assembling direction due to the displacement, the elastic deformation state of the leaf spring member 22 due to the contact with the rib 14 is maintained. Thereby, since the contact state of the contact switch 21 with respect to the leaf | plate spring member 22 is maintained, the misdetection of the contact switch 21 resulting from the impact by fall, etc. can be suppressed.

  As described above, in the portable information terminal 10 according to the present embodiment, the one end 22a of the rib 14 protruding in the assembly direction on the inner surface side of the front case 12 and the control board 20 assembled to the back case 13 is provided. The leaf spring member 22 that is fixed and contacts and presses in a state of being elastically deformed from the abutting direction with respect to the rib 14 in the assembled state, and the leaf spring member 22 in the assembled state that is in contact with the rib 14 And a contact switch 21 capable of detecting a non-contact state with respect to the leaf spring member 22 restored by releasing the contact with the rib 14. Then, the opening of the casing 11 is detected by the control circuit according to the non-contact state detected by the contact switch 21.

  Thereby, in the assembled state, even when the contact switch 21 is in contact with the leaf spring member 22 and the housing 11 vibrates, the vibration or the like is absorbed by the leaf spring member 22. Due to this, the contact switch 21 is not brought into a non-contact state with respect to the leaf spring member 22, and erroneous detection by the contact switch 21 can be prevented. Since the opening of the housing 11 can be detected accurately in this way, unauthorized use of the acquired information can be reliably prevented by erasing the acquired information such as payment-related data stored in the memory or the like.

In particular, since the elastically deformed leaf spring member 22 contacts the rib 14 in the contact direction in the assembled state, even if the rib 14 and the leaf spring member 22 are displaced in the assembled direction due to an impact caused by dropping or the like, The elastic deformation state of the leaf spring member 22 due to contact with the rib 14 is maintained. Since the elastic deformation state of the leaf spring member 22 is maintained in the assembled state as described above, the contact switch 21 is brought into contact with the leaf spring member 22 from the contact direction to detect the contact state. As described above, even when the front case 12 and the back case 13 are shifted in the assembly direction, the contact state of the contact switch 21 with respect to the leaf spring member 22 is maintained. Can be suppressed.
Therefore, it is possible to suppress erroneous detection with respect to opening of the housing 11.

  Further, in the portable information terminal 10 according to the present embodiment, the contact switch 21 contacts the one end 22a side of the leaf spring member 22 with respect to the one end 22a side in the assembled state. Compared with the case where contact is made on the other end side with respect to the spring side contact portion 22b, the contact portion of the leaf spring member 22 that contacts the contact switch 21 is less likely to vibrate, and vibration to the contact switch 21 via the rib 14 or the like. Therefore, erroneous detection of the contact switch 21 can be reliably suppressed.

  Furthermore, in the portable information terminal 10 according to the present embodiment, the contact switch 21 is supplied with power only in the non-contact state and detects the non-contact state with respect to the leaf spring member 22, so that power is supplied in the contact state, that is, in the assembled state. Therefore, power saving can be achieved as compared with the case where power is supplied only in the contact state.

  Further, in the portable information terminal 10 according to the present embodiment, the rib 14 has a portion (an inclined portion 14b and a tip portion 14c) on the back side case 13 side with respect to the rib-side contact portion 14a. Since the ribs 14 are formed so as to be separated from the plane including the rib-side contact portion 14a, the rib 14 presses the leaf spring member 22 at the inclined portion 14b and the tip portion 14c when assembling both the cases 12 and 13. Thus, the opposing surfaces of the inclined portion 14b and the tip portion 14c serve as a guide surface, and the leaf spring member 22 is gradually elastically deformed in the direction approaching the contact switch 21. Thereby, the leaf spring member 22 is elastically deformed smoothly, and the friction between the leaf spring member 22 and the rib 14 is also suppressed, so that the operation of assembling the cases 12 and 13 can be further facilitated.

  Furthermore, in the portable information terminal 10 according to the present embodiment, the leaf spring member 22 is separated from the plane including the spring side contact portion 22b as the guide portion 22c is higher than the spring side contact portion 22b (on the front side case 12 side). When the two cases 12 and 13 are assembled, the rib 14 presses the guide portion 22c so that the guide portion 22c serves as a guide surface and the leaf spring member 22 is a contact switch. It gradually elastically deforms in the direction approaching 21. Thereby, the leaf spring member 22 is elastically deformed smoothly, and the friction between the leaf spring member 22 and the rib 14 is also suppressed, so that the operation of assembling the cases 12 and 13 can be further facilitated.

In addition, this invention is not limited to the said embodiment, You may actualize as follows, and even in that case, an effect | action and effect equivalent to the said embodiment are acquired.
(1) As shown in FIG. 5, as a modification of the portable information terminal 10 according to the present embodiment, the leaf spring member 22 includes a contact portion with the contact switch 21 and a spring-side contact portion 22 b. A curved portion 22d may be formed. Thereby, since the vibration etc. via the rib 14 are suppressed by this curved part 22d, the erroneous detection of the contact switch 21 can be suppressed reliably.

(2) The rib 14 may be formed in a flat plate shape so that the width in the abutting direction is equal between the tip portion and the root portion without forming the inclined portion 14b and the tip portion 14c, for example. In this case, the leaf spring member 22 is not smoothly elastically deformed in contact with the rib 14, but the shape of the rib 14 is simplified and the rib 14 is easily formed.

DESCRIPTION OF SYMBOLS 10 ... Portable information terminal 11 ... Housing | casing 12 ... Front side case (1st case)
13 ... Back side case (second case)
14 ... Rib (protruding member)
14a ... rib side contact portion (protruding member side contact portion)
14b ... Inclined part 14c ... Tip part 20 ... Control board (control circuit, storage means, opening detection means)
21 ... Contact switch (contact sensor)
22 ... Leaf spring member (elastic member)
22a ... one end 22b ... spring side contact part (elastic member side contact part)
22c ... guide portion 22d ... curved portion

Claims (6)

A control circuit for controlling the acquired acquisition information;
Storage means for storing the acquired information;
A housing that has a first case and a second case and that houses the control circuit and the storage means in an assembled state in which both cases are assembled;
A portable information terminal comprising:
A projecting member provided on the inner surface side of the first case and projecting in the assembly direction of the first case and the second case;
One end is fixed to the second case, and the assembling direction with respect to the protruding member side contact portion of the protruding member in the assembled state at the elastic member side contact portion on the other end side than the one end. An elastic member that contacts and presses in a state elastically deformed from a direction orthogonal to
Contact capable of detecting a non-contact state with respect to the elastic member restored by releasing contact with the projecting member by contacting the elastic member in the assembled state from a direction orthogonal to the assembling direction. A sensor,
An opening detection means for detecting opening of the housing according to the non-contact state detected by the contact sensor;
A portable information terminal comprising:   The portable information terminal according to claim 1, wherein the contact sensor is in contact with the one end side of the elastic member with respect to the elastic member side contact portion in the assembled state.   The portable information terminal according to claim 2, wherein the elastic member is formed with a curved portion between a contact portion with the contact sensor and the elastic member side contact portion.   The portable information terminal according to any one of claims 1 to 3, wherein the contact sensor is supplied with electric power only in the non-contact state and detects a non-contact state with respect to the elastic member.   The projecting member is formed such that a projecting member side facing surface facing the elastic member is separated from a plane including the projecting member side contact portion toward the second case side than the projecting member side contact portion. The portable information terminal according to any one of claims 1 to 4, wherein the portable information terminal is characterized by the following.   The elastic member is formed such that an elastic member side facing surface facing the protruding member is separated from a plane including the elastic member side contact portion toward the first case side than the elastic member side contact portion. The portable information terminal according to any one of claims 1 to 5, characterized in that

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