JP5637104B2 - RFID tag - Google Patents

Description

  The present invention relates to an RFID tag including a strap holder for holding a portable strap.

As an RFID tag carried by a person, for example, an RFID tag used for a key system for managing entry / exit into a building is known, and this RFID tag is thin and small as shown in FIG. . In the case of FIG. 21, for example, a rectangular shape with one side of about 3 cm is formed. In the RFID tag 1, an RFID circuit board (not shown) on which electronic components are mounted is disposed inside the case 2.
By the way, in order to improve portability, the RFID tag is required to have a configuration in which a strap is attached to the case of the RFID tag. Here, when this inventor investigated the structure which attaches a strap to an apparatus, patent document 1, 2 was known.

In Patent Document 1, a strap through-hole is formed in a back case of a mobile phone once entering the inside from the top surface of the back case, bent into a substantially U shape, and returning to the top surface again, and inside the U-shaped through hole. A strap locking rib is formed in the portion.
In Patent Document 2, a substantially U-shaped groove that can be fitted with a strap is formed at the end of a rear case of a mobile phone, and the strap is formed by an island-shaped portion surrounded by the U-shaped groove. The groove portion is covered with a battery cover to prevent the strap from being detached from the groove.

JP 11-54927 A JP 2008-28913 A

In Patent Documents 1 and 2, a strap attaching portion for attaching a strap (a strap through hole and a strap locking rib in Patent Document 1 and a groove and an island-shaped portion in Patent Document 2) is used as a case. The structure is formed integrally.
However, in such a configuration, when the strap attaching portion in the case may be broken, this case with the strap attaching portion must be replaced with another case with the strap attaching portion, When replacing the case, the internal components (circuit board and various components) must also be removed from the case, and the internal components must be reattached to a new case.

  If the techniques described in Patent Documents 1 and 2 described above are applied to an RFID tag as they are, the strap attachment portion is formed integrally with the RFID tag case. Therefore, if this strap attachment portion is broken, the RFID tag This RFID tag also has an RFID circuit board built into the case, so that not only the troublesome case replacement work but also the removal of the RFID circuit board as described above.・ Problems that require troublesome work such as re-installation are expected.

  The present invention has been made in view of the above circumstances, and its purpose is to replace a case having a strap attachment portion without replacing the case, and to remove and reattach RFID components in the case. An object of the present invention is to provide an RFID tag that can be avoided.

  The present invention has been made through the following process. That is, the present inventor prepares a strap holder which is a separate part from the case as a member provided with the strap attachment portion, instead of integrally forming the strap attachment portion in the case of the RFID tag. The structure attached to the case of an RFID tag was considered. This configuration is shown in FIGS. 22 to 27 are reference views showing the first characteristic configuration of the present invention.

  First, in FIG. 22, the RFID tag (11) has a first case main body (13) and a second case main body (14), both of which have a substantially rectangular shape and are overlapped with each other in a plane. In addition, the strap holder (19) is attached to the case (12) including an RFID component such as an RFID circuit board.

  And as shown in FIG. 23, the said 1st case main body (13) protrudes in a substantially right angle direction from the peripheral part of the 1st main board part (13a) which makes a substantially rectangular shape, and this 1st main board part (13a). The second case body (14) includes a second main plate portion (14a) having a substantially rectangular shape, and the second main plate portion ( 14a) projecting in a substantially right angle direction from the peripheral edge of the first case main body (13) and the second case main body (14) in a coupled state with the first frame-shaped wall (13b). It has two frame-shaped walls (14b).

  Further, a concave portion in a form in which a corner corresponding portion of the second frame-like wall portion (14b) and the second main plate portion (14a) is cut off at one corner portion (14k1) of the second case body (14). Two side portions of the second frame-shaped wall portion (14b) which are formed on the second main plate portion (14a) of the second case body (14) and are adjacent to each other with the concave portion (14d) interposed therebetween. A screw insertion boss portion (14b1, 14b2) in the vicinity of one side portion (14b1) that protrudes in the same direction as the second frame-like wall portion (14b) and has a screw insertion hole portion (14e ') ( 14e) is formed.

Further, the corner portion corresponding to Oite said recess (14d) to the first main plate portion of the first case body (13) (13a) to (13k1), the engaging boss having engaging holes a (13c') A portion (13c) is formed so as to protrude in the same direction as the first frame-like wall portion (13b). Further, the first main plate portion (13a) has a screw insertion hole portion (14e) of the screw insertion boss portion (14e). A screw threaded boss part (13d) having a threaded hole part (13d ') corresponding to') is formed so as to protrude in the same direction as the first frame-like wall part (13b).

  As shown in FIGS. 23 to 27, the strap holder (19) includes a strap attachment portion (20) disposed in the recess (14d) of the second case body (14), and the strap attachment portion (20 ) To the screw insertion boss portion (14e) and the screw threaded boss portion (13d), and a strap attaching portion (20) is formed. The first case has a thickness equal to or greater than or equal to the thickness of the second case body (14), and the outer surface portion of the first case is disposed in the recess (14d). An arrangement outer surface portion (20a) arranged on the screw threaded boss portion (13d) of the main body (13) and parallel to the first main plate portion (13a), and the concave portion of the second case main body (14) ( 14d) edge (e1, e2, e ) On the recessed portion side outer surface portion (20b) in contact with substantially the entire region, and on the outer edge portion on the corner outer edge side (20c) having substantially the same outer shape as the outer edge shape of the corner portion (13k1) in the first case body (13). The arrangement outer surface portion (20a) and the opposite outer surface portion (20d) which is the opposite surface.

Moreover, the said to-be-attached plate part (21) is extended from the said recessed part side outer surface part (20b), and this to-be-attached plate part (21) is a screw threading hole of the said screw threading boss | hub part (13d). A screw insertion hole (21a) is formed corresponding to the portion (13d ').
A strap insertion hole (22) is formed in the strap attachment portion (20). One end of the strap insertion hole (22) opens at the outer edge portion (20c) at the corner outer edge and the other end opens at the outer surface (20d) on the opposite side, and the strap attachment portion extends from the opening at the one end. (20) A horizontal hole portion (22a) that extends in the direction toward the concave portion side outer surface portion (20b), and the other end extending from the other end of the horizontal hole portion (22a) toward the opposite outer surface portion (20d). And a vertical hole portion (22b) leading to the opening.

In the strap attachment portion (20), a strap engaging portion (23) is formed at a portion between the inner surface of the strap insertion hole portion (22) and the outer edge portion on the corner outer edge side (20c) and the outer surface portion on the opposite side (20d). ) Is formed.
Further, the outer surface portion (20a) is formed with a projection (24) that protrudes toward the engagement boss (13c) and is inserted into and engaged with the engagement hole (13c ′).

  For attaching the strap holder (19) to the case (12), as shown in FIGS. 26 and 27, the protrusion (24) of the strap attachment part (20) is connected to the first case body (13). The engagement hole (13c ') is inserted and engaged, and the screw insertion hole (21a) portion of the attached plate (21) is screwed into the screw-engaging boss of the first case body (13). (13d), the second case main body (14) has its recesses (14d) with the edges (e1, e2, e3) aligned with the recess-side outer surface (20b) of the strap mounting portion (20). The first case body (13) is overlapped with the screw insertion hole (14e ') of the screw insertion boss (14e) and the screw insertion hole (21a) of the attached plate (21). The threaded screw (27) The mounting plate portion (21) is interposed between the first case body (13) and the second case body (14) by screwing into the screw screw hole (13d ') of the screw portion (13d). Fix it.

  According to this configuration, since the strap holder (19), which is a separate part from the case 2, is attached to the case (12) as a member having the strap attaching portion (20), the strap attaching portion (20) is broken. In such a case, only the strap holder (19) needs to be replaced, and therefore the case (12) need not be replaced. When replacing the strap holder (19), the second case body (14) is removed, the broken strap holder (19) is removed, and a new strap holder (19) is attached to the first case body (13). What is necessary is just to arrange | position and attach a 2nd case main body (14) again. That is, the internal RFID component can be left as it is, and it is not necessary to remove and reattach the RFID component.

  In addition, by providing the strap holder (19) at the corner of the case (12), the size of the RFID tag (11) can be increased without protruding the strap holder (19) from the case (12). The strap holder (19) can be attached to the case (12).

  That is, it is desirable that the strap holder is provided in a non-projecting form from the case from the viewpoint of catching. Considering this, when the strap holder (19) is attached so as not to protrude on one side of the case (12), the entire strap holder (19) enters the case (12) greatly. Almost all of (19) hits the RFID circuit board inside the case (12). In order to avoid this, the size of the case (12) must be increased, and the entire RFID tag (11) is increased in size.

  In this regard, according to the present invention in which the strap holder (19) is provided at the corner of the case (12), the strap holder (19) constitutes the original corner of the case (12). It does not protrude outside the case (12). In addition, since the corners are used, the amount of protrusion into the case (12) is small, and the overall size of the RFID circuit board does not need to be changed, so that the size of the case (12) is increased. It is possible to attach the strap holder (19) to the case (12) without protruding.

Furthermore, the inventor has also devised the following points.
The configuration described above, that is, the configuration in which the strap holder (19), which is a separate part, is attached to the case (12) originally considers the replacement workability when the strap mounting portion (20) is broken. The inventor considered that if the strength of the strap holder (19) itself can be further enhanced, the strap holder (19) can be less broken and the replacement work itself can be reduced.

Therefore, the present inventor further considered the strength of the strap holder (19) itself and the strength of attachment to the case (12).
That is, when the user swings the RFID tag (11) with a strap or pulls the RFID tag (11), a large external force F acts on the strap holder (19) as shown in FIGS. . In this case, the screw fixing portion of the attached plate portion (21), the strap locking portion (23), the back wall portion (20e) of the lateral hole portion (22a) of the strap insertion hole portion (22), and the like are provided. This external force F acts. Here, in the case of the above-described configuration, the strength of the back wall portion (20e) of the lateral hole portion (22a) of the strap insertion hole portion (22) is structurally due to the presence of a void portion such as the lateral hole portion (22a). It turned out to be low. If the thickness of the back wall (20e) is simply increased, the strap insertion hole (22) becomes narrow and it becomes difficult to insert the strap.

  In the present invention, such a new problem is also solved by the second characteristic configuration of the present application. That is, referring to FIG. 6 to FIG. 9 to facilitate understanding of the second feature configuration of the present application, in the lateral hole portion (22a) of the strap insertion hole portion (22) in the concave portion side outer surface portion (20b). Among the corresponding portions, the one side portion is located near the inner surface of one side portion (14b1) of the second frame-like wall portion (14b) in the arrangement state of the strap holder (19) in the concave portion (14d). The first reinforcing plate portion (25) having a height dimension (Tb) larger than the height dimension (Ta) of the lateral hole portion (22a) of the strap insertion hole portion (22) in contact with or close to (14b1). Is forming.

  Similarly, of the portion corresponding to the lateral hole portion (22a) of the strap insertion hole portion (22) in the concave portion side outer surface portion (20b), the strap holder (19) is disposed in the concave portion (14d). In contact with the other side portion (14b2) at a position near the inner surface of the other side portion (14b2) that is substantially perpendicular to the one side portion (14b1) of the second frame-shaped wall portion (14b). A second reinforcing plate portion (26) having a height dimension (Tb) larger than the height dimension (Ta) of the lateral hole portion (22a) of the strap insertion hole portion (22) is formed.

  According to this configuration, the first surface having the height dimension Tb larger than the height dimension Ta of the lateral hole part (22a) of the strap insertion hole part (22) is formed on the concave part side outer surface part (20b) of the strap attachment part (20). Since the reinforcing plate portion (25) and the second reinforcing plate portion (26) are formed, the back wall portion (20e) is strapped without increasing the thickness of the back wall portion (20e) of the strap attaching portion (20). It can be sufficiently reinforced against external force in the pulling direction. As a result, the strength of the strap holder (19) itself can be increased, the strap holder (19) can be less broken and the replacement work itself can be reduced.

  Furthermore, according to the said structure, the said 1st reinforcement board part (25) is one side part (14b1) of both the side parts (14b1, 14b2) of a 2nd frame-shaped wall part (14b) in the arrangement | positioning state of a strap holder (19). ) And the second reinforcing plate portion (26) is in contact with or close to the inner surface of the other side portion (14b2) that is substantially perpendicular to the one side portion (14b1). When F acts on the strap holder (19), the external force F is applied to the one side portion (14b1) of the second frame-like wall portion 14b via the first reinforcing plate portion (25) and the second reinforcing plate portion (26). And the other side (14b2) can be received on the inner surface, and as a result, the external force F can be distributed to the case (12), and the attachment strength of the strap holder (19) can be increased. Increasing the break strength of (19) It can, as long as extremely excessive external force is not applied so as not assumed at design prevents damage to the strap holder (19), it can contribute to a very small reduction of the replacement frequency.

The perspective view of the RFID tag by 1st Embodiment of this invention Sectional drawing by cutting line Q2-Q2 of FIG. Disassembled perspective view of case and strap holder Top view of the first case body Plan view of the second case body Sectional drawing by cutting line Q6-Q6 of FIG. Sectional drawing by cutting line Q7-Q7 of FIG. Perspective view of strap holder The perspective view of the strap holder seen from the direction different from FIG. Cross section of engagement boss Cross section of protrusion A plan view of a state in which the strap holder is disposed on the first case body Sectional drawing by cutting line Q13-Q13 of FIG. Partial side view seen from the direction of arrow Q14 in FIG. FIG. 6 equivalent diagram for explaining the operation FIG. 7 equivalent diagram for explaining the operation FIG. 10 equivalent diagram showing a reference example Figure 10 equivalent diagram showing a different reference example FIG. 6 equivalent diagram showing the second embodiment. FIG. 6 equivalent diagram showing the third embodiment. External view of conventional RFID tag FIG. 1 equivalent view showing a reference example different from FIG. 17 and FIG. 3 equivalent figure Equivalent to FIG. Fig. 9 equivalent 6 equivalent diagram 7 equivalent diagram

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the appearance of an RFID tag 11 according to this embodiment. The RFID tag 11 includes RFID parts such as an antenna 18 and an RFID circuit board 17 which will be described later, and a strap holder 19 in the case 12.

  As shown in FIGS. 2 and 3, the case 12 includes a first case body 13, a second case body 14, and a lid 15. The first case body 13 includes a first main plate portion 13a having a substantially rectangular planar shape, and a first frame-shaped wall portion 13b formed to protrude from the peripheral edge portion of the first main plate portion 13a in a substantially right angle direction. It is configured.

  An engagement boss portion 13c is formed in one corner portion 13k1 of the first case body 13, and an engagement hole portion 13c 'is formed in the engagement boss portion 13c. As shown in FIG. 4, the engagement hole 13c 'is on a virtual diagonal line K passing through a corner corresponding to the recess 14d in the first case body 13 and a corner forming a pair with the corner. It has a circular shape.

  Further, the first main plate portion 13a has the same projecting direction as the first frame-shaped wall portion 13b at a position near the engaging hole portion 13c 'and near the one side portion 13b1 of the first frame-shaped wall portion 13b. The screw threaded boss part 13d is formed so as to project to the threaded part, and a threaded threaded hole part 13d 'is formed in the threaded threaded boss part 13d. The screw threaded boss portion 13d, the one side portion 13b1 of the first frame-like wall portion 13b, and the other side portion 13b2 that is continuous at a substantially right angle are connected by an auxiliary rib 13r.

Furthermore, a slightly lower step portion 13s (see FIGS. 3 and 4) is formed at the upper end portion of the first frame-like wall portion 13b of the corner portion 13k1 of the first case body 13, and the screw threaded boss portion. 13d and the auxiliary rib 13r are also made the same height as this step part 13s.
The other corners 13k2 to 13k4 of the first case body 13 are formed with screw threaded bosses 13e to 13g protruding in the same protruding direction as the first frame-shaped wall 13b. The screw screw bosses 13e to 13g are formed with screw screw holes 13e 'to 13g', respectively.

  The second case main body 14 includes a second main plate portion 14a having a substantially rectangular planar shape, and a second frame-shaped wall portion 14b formed to project from the peripheral portion of the second main plate portion 14a in a substantially right angle direction. And is configured. The second frame-like wall portion 14b will be apparent from the description below, but is brought into contact with the first frame-like wall portion 13b when the first case body 13 and the second case body 14 are coupled.

  The one corner 14k1 of the second case body 14 is formed with a substantially arc-shaped recess 14d formed by cutting away the corresponding portions of the second frame-shaped wall 14b and the second main plate 14a. Yes. The recess 14d matches the outer surface shape (planar shape) of the recess-side outer surface portion 20b of the strap attachment portion 20 of the strap holder 19 described later.

Further, the second frame-like wall portion 14b protrudes in the same protruding direction as the second frame-like wall portion 14b at a position approaching one side portion 14b1 of both side portions 14b1 and 14b2 that are adjacent to each other with the concave portion 14d interposed therebetween. A screw insertion boss portion 14e is formed, and a screw insertion hole 14e 'is formed in the screw insertion boss portion 14e.
The other corner portions 14k2 to 14k4 of the second case body 14 are formed with screw insertion boss portions 14f to 14h that protrude in the same direction as the protruding direction of the second frame-like wall portion 14b. Screw insertion hole portions 14f 'to 14h' are formed in the screw insertion boss portions 14f to 14h, respectively.

In addition, the screw insertion hole parts 14e'-14h 'of the above-mentioned screw insertion boss | hub parts 14e-14h consist of a hole part with a screw seat, as shown in FIG.
Further, in FIGS. 3 and 5, the second case body 14 is fitted into the second frame-like wall portion 14b and the screw insertion boss portions 14e to 14h so as to protrude in a direction perpendicular to the second main plate portion 14a. A mating wall portion 14c is formed, and the fitting wall portion 14c will be apparent from the following, but when the first case main body 13 and the second case main body 14 are coupled, the inner side of the first case main body 13 ( The first frame-like wall portion 13b, the auxiliary rib 13r, and the screw threaded boss portions 13e to 13g are fitted to the inside). The second main plate portion 14a is formed with a battery replacement hole 14i.

  As shown in FIG. 2, an RFID circuit board 16 is accommodated in the first case body 13, and a circuit (not shown) is formed on the RFID circuit board 16. Are mounted, and a battery 17 as a power source of the control unit is detachably mounted by a battery holder 17a.

  In FIG. 3, the lid 15 is detachably mounted on the upper surface (outer surface) of the second main plate portion 14a of the second case body 14 by engagement means (not shown). An antenna 18 is attached. Furthermore, a substantially arc-shaped cutout portion 15 a that matches the recess-side outer surface portion 20 b of the strap attachment portion 20 of the strap holder 19 is formed at one corner portion of the lid 15. The lid 15 is mounted such that the cutout portion 15a matches the concave portion 14d of the second case body 14. When the lid 15 is removed from the state of FIG. 2, the battery 17 can be replaced through the battery replacement hole 14 i of the second case body 14.

  The strap holder 19 is formed of a synthetic resin integrally molded product. As shown in FIGS. 6 to 9, the strap attachment portion 20 disposed in the concave portion 14 d of the second case main body 14, and the strap It has a tongue-like attached plate part 21 formed so as to extend from the attachment part 20 to between the screw insertion boss part 14e and the screw screwing boss part 13e.

The strap attaching part 20 has a thickness (vertical width) substantially equal to the thickness of the second case body 14 and the lid 15 attached thereto.
The outer surface portion of the strap attachment portion 20 is disposed on the screw threaded boss portion 13d of the first case body 13 in a state where the strap attachment portion 20 is disposed in the recess 14d. An outer surface portion 20a parallel to 13a and an edge of the recess 14d of the second case body 14 (an edge e1 of the one side portion 14b1 of the second frame-shaped wall portion 14b and an edge e2 of the other side portion 14b2; In addition, the outer surface 20b of the concave portion side that can contact the substantially entire region of the concave end edge e3) of the second main plate portion 14a and has a substantially arcuate convex shape when viewed from above, and the first case body 13 when viewed from above. The outer edge portion 20c has a corner outer edge side surface 20c having substantially the same outer shape as that of the outer edge portion of the corner portion, and an opposite outer surface portion 20d which is a surface portion on the opposite side of the arrangement outer surface portion 20a.

  Further, the attached plate portion 21 extends in a substantially perpendicular direction from a portion of the recessed portion side outer surface portion 20b on the arrangement outer surface portion 20a side, and the attached plate portion 21 includes the screw threaded boss portion 13d. A screw insertion hole portion 21a is formed corresponding to the screw screw hole portion 13d '.

The strap attaching portion 20 is formed with a strap insertion hole portion 22 having one end opened at the corner outer edge side outer surface portion 20c and the other end opened at the opposite outer surface portion 20d.
The strap insertion hole portion 22 has a horizontal hole portion 22a and a vertical hole portion 22b. The horizontal hole portion 22a extends from the opening at the one end toward the concave portion side outer surface portion 20b through the inside of the strap attachment portion 20. The vertical hole portion 22b extends from the other end of the horizontal hole portion 22a toward the opposite outer surface portion 20d and opens at the opposite outer surface portion 20d.
In the strap attaching portion 20, a strap engaging portion 23 is formed at a portion between the inner surface of the strap insertion hole portion 22 and the corner outer edge side outer surface portion 20c and the opposite outer surface portion 20d.

  Further, as shown in FIGS. 8, 10, and 11, a protrusion 24 that protrudes toward the engagement boss 13c and is inserted into and engaged with the engagement hole 13c ′ is formed on the outer surface 20a. Has been. As shown in FIGS. 10 and 11, the protrusion 24 has a quadrangular cross section in a direction orthogonal to the insertion direction, and a pair of parallel two sides 24 a and 24 b of the quadrangle is the virtual section. Two sets of two sides 24c and 24d that are orthogonal to the diagonal line K and parallel to the virtual diagonal line K are formed in another set. The width Hk in the diagonal direction of the protrusion 24 is slightly larger than the diameter of the engagement hole 13c ′ (a dimension in which the protrusion 24 can be press-fitted into the engagement hole 13c ′). It is set.

  Furthermore, as shown in FIGS. 6 to 9, in the portion corresponding to the lateral hole portion 22a of the strap insertion hole portion 22 in the concave portion side outer surface portion 20b, the strap holder 19 is disposed in the concave portion 14d. From a height dimension Ta of the lateral hole portion 22a of the strap insertion hole portion 22 in contact with or close to the one side portion 14b1 at a portion near the inner surface of the one side portion 14b1 of the second frame-shaped wall portion 14b. A first reinforcing plate portion 25 having a large height dimension Tb is formed.

In this case, the first reinforcing plate portion 25 is also continuous with the attached plate portion 21 and also serves as a reinforcing joint plate (so-called stay) between the strap attaching portion 20 and the attached plate portion 21. .
Further, of the portion corresponding to the lateral hole portion 22a of the strap insertion hole portion 22 in the concave portion side outer surface portion 20b, the second frame-like wall portion 14b is arranged in the concave portion 14d of the strap holder 19. The height of the lateral hole portion 22a of the strap insertion hole portion 22 is in contact with or close to the other side portion 14b2 at a portion near the inner surface of the other side portion 14b2 that is substantially perpendicular to the one side portion 14b1. A second reinforcing plate portion 26 having a height dimension Tb larger than the dimension Ta is formed.

  Now, an example of the assembly procedure of the above-described component parts will be described. In the state shown in FIG. 3, the RFID circuit board 16 is first disposed in the first case body 13, and then the screw insertion hole portion 21 a portion of the attached plate portion 21 of the strap holder 19 is placed on the above-described portion as shown in FIG. 12. The protrusion 24 of the strap attachment portion 20 of the strap holder 19 is inserted into the engagement hole portion 13c ′ of the first case body 13 while being disposed on the screw threaded boss portion 13d of the first case body 13 (insertion). Engage. At this time, the strap holder 19 is fixed (temporarily fixed) in an immobile state by the protrusion 24 being press-fitted into the engagement hole 13c ′.

  Then, the second case main body 14 is overlaid on the first case main body 13 from above so that the concave portion 14 d abuts on the concave portion side outer surface portion 20 b of the strap attaching portion 20. At this time, as shown in FIG. 7, the inner surface of the one side portion 14 b 1 of the second case body 14 is in contact with or close to the outer surface of the first reinforcing plate portion 25 of the strap holder 19, and the inner surface of the other side portion 14 b 2 is the strap. It abuts on or is close to the outer surface of the second reinforcing plate portion 26 of the holder 19.

  Thereafter, the screw 27 (see FIGS. 6 and 13) that has passed through the screw insertion hole 14 e ′ of the screw insertion boss 14 e of the second case body 14 and the screw insertion hole 21 a of the attached plate 21. Screws (not shown) that are screwed into the screw screw holes 13d 'of the screw screw boss 13d and passed through the screw insertion holes 14f' to 14h 'of the other screw insertion bosses 14f to 14h. The screw screw bosses 13e to 13g are screwed into the screw screw holes 13e 'to 13g'. As a result, as shown in FIGS. 6 and 13, the second case body 14 is coupled to the first case body 13, and the attached plate portion 21 is connected to the first case body 13 and the second case body 14. Fix between. Thereafter, the lid 15 is attached to the upper surface (outer surface) of the second main plate portion 14a of the second case body 14 by engagement means (not shown) (see FIG. 1). In this case, the cutout portion 15a matches the upper portion of the outer surface portion 20b on the concave portion side of the strap attachment portion 20. In this way, the RFID tag 11 is assembled.

  In this assembled state, as shown in FIG. 2, the second frame-like wall portion 14 b is brought into contact with the first frame-like wall portion 13 b in a coupled state of the first case main body 13 and the second case main body 14. The Further, as shown by a two-dot chain line in FIG. 4, the fitting wall portion 14 c is connected to the inner side of the first case body 13 (the first frame) in a coupled state of the first case body 13 and the second case body 14. The inner wall 13b, the auxiliary rib 13r, and the screwed bosses 13e to 13g). And the said to-be-attached board part 21 is located between the one side part 14b1 of the 2nd frame-shaped wall part 14b, and the fitting wall part 14c.

Further, as shown in FIG. 14, the strap 28 is inserted into the strap insertion hole portion 22 and anchored to the strap locking portion 23.
According to the configuration of the above-described embodiment, the strap holder 19 is provided at the corner portion of the case 12, so that the strap holder 19 does not protrude from the case 12 and the strap holder 19 is attached to one side portion of the case 12. Unlike the case where the strap holder 19 is attached to the case 12, the strap holder 19 can be attached to the case 12 without increasing the overall size of the RFID tag 11.

  Here, when the user swings the RFID tag 11 with the strap 28 or pulls the RFID tag 11, an external force F in a large pulling direction acts on the strap holder 19 as shown in FIGS. . In this case, the external force F acts on each part such as the screw fixing portion of the attached plate portion 21, the strap locking portion 23, and the back wall portion 20 e of the lateral hole portion 22 a of the strap insertion hole portion 22.

  On the other hand, since the screw 27 fixing portion in the mounted plate portion 8 is sandwiched between the screw screwing boss portion 13d and the screw insertion boss portion 14e, there is no problem in strength. Since the strap engaging portion 23 is formed thick, this portion also has no problem in strength.

  On the other hand, regarding the back wall portion 20e, there is a concern that the lateral hole portion 22a which is a gap portion is structurally weak in terms of structure. However, in the above-described embodiment, the recess side of the strap holder 19 is concerned. Since the first reinforcing plate portion 25 and the second reinforcing plate portion 26 having a dimension Tb higher than the height dimension Ta of the horizontal hole portion 22a are formed in the portion corresponding to the horizontal hole portion 22a in the outer surface portion 20b, the strap attachment portion Without increasing the thickness of the back wall portion 20e of 20 (the portion between the lateral hole portion 22a and the recess-side outer surface portion 20b), the back wall portion 20e is sufficiently reinforced against the external force in the strap pulling direction. it can. As a result, the strength of the strap holder 19 itself can be increased, and the strap holder 19 can be less broken and the replacement work itself can be reduced. As described above, the strap holder 19 of the present embodiment can ensure the strength of the conventional strap attaching portion or higher.

  Further, in the present embodiment, as shown in FIG. 7, the first reinforcing plate portion 25 is connected to one side of the two side portions 14 b 1 and 14 b 2 of the second frame-like wall portion 14 b in the concave portion 14 d in the arrangement state of the strap holder 19. The second reinforcing plate 26 is configured so as to be in contact with or close to the inner surface of the portion 14b1, and the other side of the two sides 14b1 and 14b2 of the second frame-like wall portion 14b in the recess 14d in the arrangement state of the strap holder 19 Since it is configured to contact or be close to the inner surface of the portion 14b2, when the aforementioned external force F acts on the strap holder 19, the external force F is applied via the first reinforcing plate portion 25 and the second reinforcing plate portion 26. The second case body of the case 12 can be received by the inner surface of the one side portion 14b1 and the other side portion 14b2 of the second frame-like wall portion 14b, and as a result, the external force F is indicated by a solid arrow. 4, the attachment strength of the strap holder 19 can be increased, the breakage strength of the strap holder 19 can be increased, and the strap holder 19 can be used unless a very excessive external force that is not assumed at the time of designing is applied. 19 damage can be prevented and the replacement frequency can be minimized.

  By the way, when the strap holder 19 needs to be replaced due to damage caused by an extremely excessive external force not assumed at the time of design, the strap holder 19 is attached to the case 12 as a separate part from the case 12. Therefore, only the strap holder 19 needs to be replaced, and therefore the case 12 need not be replaced.

  Further, when replacing the strap holder 19, the second case body 14 is removed, the broken strap holder 19 is removed, a new strap holder 19 is placed on the first case body 13, and the second case body 14 is reattached. Install it. That is, the internal RFID component can be left as it is, and it is not necessary to remove and reattach the RFID component.

  Furthermore, in this embodiment, since the projection 24 of the strap holder 19 is press-fitted into the engagement hole 13c ′ of the first case body 13, the strap holder 19 is inserted into the first case body 13 in the assembly process. When placing the strap holder 19, the strap holder 19 can be placed in a temporarily fixed state without rattling by the above-described press-fitting.

  Since the strap holder 19 can be firmly and temporarily fixed in the first case body 13 in this manner, the second case body 14 can be screwed to the first case body 13 after that. When the second case main body 14 is arranged (stacked) on the first case main body 13, the strap holder 19 is not likely to drop off from the first case main body 13, and workability is good.

  Here, even if the protruding portion has a columnar shape (the cross-sectional shape is round), as in the protruding portion 24A of FIG. 17 shown as a reference diagram, the protruding portion 24A with respect to the inner diameter dimension of the engaging hole portion 13c ′ It is possible to press-fit the projection 24A into the engagement hole 13c ′ by slightly increasing the outer diameter of the projection 24A, but the entire outer periphery of the projection 24A is aligned with the entire inner circumference of the engagement hole 13c ′. Because of the sliding contact, the press-fitting resistance of the protrusion 24A when the user press-fits is large, and as a result, a large force is required at the time of press-fitting and it is difficult to press-fit, resulting in poor assembly.

  In this regard, according to the present embodiment, as shown in FIGS. 10 to 12, the projecting portion 24 has a quadrangular cross section, and the width dimension Hk in the diagonal direction of the projecting portion 24 is set to the engagement hole portion. Since it is set to a dimension slightly larger than the diameter dimension of 13c '(a dimension capable of press-fitting the protrusion 24 into the engagement hole 13c'), the protrusion 24 is pressed into the engagement hole 13c '. In this case, only the four corners of the projection 24 come into sliding contact with the engagement hole 13c ′, the press-fitting resistance is small, the press-fitting is easy, and the assemblability is improved.

  Furthermore, in the present embodiment, as shown in FIG. 10, the engagement hole 13c ′ is formed so that the corner 13k1 corresponding to the recess 14d in the first case main body 13 and the corner that forms a pair with the corner 13k1. The projection 24 is provided on a virtual diagonal K passing through 13k2, and the pair of parallel two sides 24a, 24b is orthogonal to the virtual diagonal K and another set of two parallel sides 24c, 24d Since it is formed so as to be parallel to the virtual diagonal line K, when the external force F described above is applied, the force in the virtual diagonal direction of the projection 24 acting on the engaging boss part 13c is Dispersed by a corner portion 24ac composed of the portion 24a and the side portion 24c and a corner portion 24ad composed of the side portion 24a and the side portion 24d, the stress of the engagement boss portion 13c can be dispersed, and the engagement boss Stresses relating to the portion 13c and the protrusion 24 A it can be reduced.

  Incidentally, as shown in FIG. 18, when the protrusion 24 is formed in the direction in which the diagonal of the protrusion 24 is positioned on the virtual diagonal K, the corner from the corner 24ac on the virtual diagonal K to the engagement boss 13c. The force concentrates and the stress on the engaging boss 13c and the protrusion 24 increases. On the other hand, as described above, in this embodiment, the stress related to the engaging boss portion 13c and the protruding portion 24 can be reduced.

  In addition, when the RFID tag 11 is placed in a pocket or bag of clothes, the strap holder 19 may be pushed backward in the direction of the case 12. The external force in the pushing direction at this time is indicated by a symbol R in FIGS. In this case, as can be seen from these drawings, the external force R is generated when the recess-side outer surface portion 20b of the strap attachment portion 20 is edge e1, e2, e3 (see FIG. 3) of the recess-side outer surface portion 20b of the second case body 14. Are also in contact with or close to each other), and are received by the edges e1, e2, e3 of the recess 14d and dispersed in a wide range as indicated by solid arrows. In addition, the external force R is also received and distributed by the screwing portion of the mounted plate portion 21 and the projection 24. As a result, the breaking strength of the strap holder 19 can be increased against the external force R in the pushing direction.

In this case, even if the back wall 20e is stressed by the external force R, the back wall 20e is reinforced by the first reinforcing plate 25 and the second reinforcing plate 26 described above. strong.
As described above, according to this embodiment, the strap holder 19 and the strap holder mounting structure can be made sufficiently strong against external forces in the pulling direction and the pushing direction.
In the above embodiment, the thickness dimension of the strap holder 19 is substantially the same as the total thickness dimension of the second case main body 14 and the lid 15, but as shown in FIG. 19 showing the second embodiment of the present invention. The thickness of the two case main body 14 may be substantially the same.

  Moreover, although the said to-be-attached board part 21 was set as the structure extended from the part (position lower part of the recessed part side outer surface part 20b in FIG. 6) near the arrangement | positioning outer surface part 20a in the recessed part side outer surface part 20b, 3rd execution of this invention It is good also as a structure extended from the intermediate part of the up-down direction in the recessed part side outer surface part 20b like the to-be-attached plate part 21A of FIG. 20 which shows a form. Also in this case, the 1st reinforcement board part 25 and the 2nd reinforcement board part 26 are formed in the part corresponding to the horizontal hole part 22a in the recessed part side outer surface part 20b. The heights of the screw insertion boss portion 14e and the screw screwing boss portion 13d are also formed in accordance with the attached plate portion 21A. Even if comprised in this way, there exists an effect similar to the said embodiment.

The second case main body 14 may be integrally provided with a lid 15, and in this case, the lid 15 constitutes a second main plate portion.
According to the RFID tag 11 of the above-described embodiment, when replacing the strap holder 19 as a member provided with the strap attaching portion 20, it is not necessary to replace the case 12, and without removing / reattaching the RFID component. Furthermore, the breaking strength of the strap holder 19 itself can be greatly enhanced, and the replacement frequency of the strap holder 19 itself can be minimized.
Note that the RFID tag of the present invention is not limited to the above-described embodiment, and can be changed and modified without departing from the spirit of the invention.

  In the drawings, 11 is an RFID tag, 12 is a case, 13 is a first case body, 13a is a first main plate portion 13a, 13b is a first frame-like wall portion, 13c is an engaging boss portion, and 13c 'is an engaging hole portion. , 13d is a screw screw boss, 13d 'is a screw screw hole, 14 is a second case body, 14a is a second main plate part, 14b is a second frame-like wall part, 14d is a concave part, and 14e is a screw insertion boss. 14e 'is a screw insertion hole, 15 is a lid 15, 16 is an RFID circuit board, 19 is a strap holder, 20 is a strap mounting portion, 20a is an outer surface portion, 20b is an outer surface portion on the concave side, and 20c is outside the corner portion. Edge side outer surface portion, 20d is opposite outer surface portion, 20e is back wall portion, 21 is a mounting plate portion, 21a is screw insertion hole portion, 22 is strap insertion hole portion, 22a is horizontal hole portion, 22b is vertical hole portion, 23 is a strap locking portion, 24 is a protrusion, and 25 is a first reinforcement. Parts, 26 denotes a second reinforcement plate portion.

Claims (2)

Each has a first case main body (13) and a second case main body (14) which are formed in a substantially rectangular shape and are overlapped with each other in a plane, and have RFID components such as an RFID circuit board inside. A provided case (12);
An RFID tag comprising a strap holder (19) attached to the case (12),
The first case body (13) includes a first main plate portion (13a) having a substantially rectangular shape, and a first frame-like wall portion formed to project from the peripheral portion of the first main plate portion (13a) in a substantially right angle direction. (13b)
The second case body (14) is formed to project from the second main plate portion (14a) having a substantially rectangular shape and a peripheral portion of the second main plate portion (14a) in a substantially right angle direction. ) And the second case main body (14) and the second frame-like wall portion (14b) which is brought into abutment with the first frame-like wall portion (13b).
Further, a concave portion in a form in which a corner corresponding portion of the second frame-like wall portion (14b) and the second main plate portion (14a) is cut off at one corner portion (14k1) of the second case body (14). Two side portions of the second frame-shaped wall portion (14b) which are formed on the second main plate portion (14a) of the second case body (14) and are adjacent to each other with the concave portion (14d) interposed therebetween. A screw insertion boss portion (14b1, 14b2) in the vicinity of one side portion (14b1) that protrudes in the same direction as the second frame-like wall portion (14b) and has a screw insertion hole portion (14e ') ( 14e) is formed,
The corners corresponding to Oite said recess (14d) to the first main plate portion of the first case body (13) (13a) to (13k1), the engaging boss portion having the engagement hole portion (13c') ( 13c) is formed so as to protrude in the same direction as the first frame-like wall portion (13b), and the first main plate portion (13a) is further provided with a screw insertion hole portion (14e ') of the screw insertion boss portion (14e). A screw threaded boss part (13d) having a threaded hole part (13d ') corresponding to and projecting in the same direction as the first frame-like wall part (13b),
The strap holder (19) includes a strap attachment portion (20) disposed in the recess (14d) of the second case body (14), and the screw insertion boss portion (14e) from the strap attachment portion (20). And a to-be-attached plate part (21) formed so as to extend between the screw threaded boss part (13d),
The strap attachment portion (20) has a thickness equal to or greater than or equal to the thickness of the second case body (14), and the outer surface portion of the strap attachment portion (20) is disposed in the recess (14d). The arrangement outer surface part (20a) which is arranged on the screw threaded boss part (13d) of the first case body (13) and is parallel to the first main plate part (13a), and the second case A recess-side outer surface portion (20b) that contacts substantially the entire region of the edge (e1, e2, e3) of the recess (14d) of the main body (14), and the corner portion (13k1) of the first case main body (13). It is composed of a corner outer edge side outer surface portion (20c) having an outer surface shape substantially the same as the outer edge shape, and an opposite outer surface portion (20d) which is a surface opposite to the arrangement outer surface portion (20a).
The attached plate portion (21) extends from the outer surface portion (20b) on the concave side, and the attached plate portion (21) has a screw screw hole portion (13d) of the screw screw boss portion (13d). 13d ') corresponding to the screw insertion hole (21a),
One end of the strap attachment portion (20) opens at the outer edge portion (20c) on the corner outer edge side and the other end opens at the outer surface portion (20d) on the opposite side, and the strap attachment portion opens from the opening at the one end. (20) A horizontal hole portion (22a) that extends in the direction toward the concave portion side outer surface portion (20b), and the other end extending from the other end of the horizontal hole portion (22a) toward the opposite outer surface portion (20d). A strap insertion hole (22) having a vertical hole (22b) leading to the opening of
In the strap attachment portion (20), a strap engaging portion (23) is formed at a portion between the inner surface of the strap insertion hole portion (22) and the outer edge portion on the corner outer edge side (20c) and the outer surface portion on the opposite side (20d). ) Is formed,
A protrusion (24) that protrudes toward the engagement boss (13c) and is inserted and engaged with the engagement hole (13c ′) is formed on the arrangement outer surface (20a).
Of the portion corresponding to the lateral hole portion (22a) of the strap insertion hole portion (22) in the concave portion side outer surface portion (20b), the strap holder (19) is disposed in the concave portion (14d) and the first The lateral hole portion (22) of the strap insertion hole portion (22) is in contact with or close to the one side portion (14b1) at a position near the inner surface of one side portion (14b1) of the two-frame wall portion (14b). A first reinforcing plate portion (25) having a height dimension (Tb) larger than the height dimension (Ta) of 22a),
Similarly, of the portion corresponding to the lateral hole portion (22a) of the strap insertion hole portion (22) in the concave portion side outer surface portion (20b), the strap holder (19) is disposed in the concave portion (14d). In contact with the other side portion (14b2) at a position near the inner surface of the other side portion (14b2) that is substantially perpendicular to the one side portion (14b1) of the second frame-shaped wall portion (14b). A second reinforcing plate part (26) having a height dimension (Tb) larger than the height dimension (Ta) of the lateral hole part (22a) of the strap insertion hole part (22) is formed,
The protrusion (24) of the strap attachment portion (20) is inserted and engaged with the engagement hole (13c ′) of the first case body (13), and the attachment plate portion (21) is The screw insertion hole (21a) is disposed on the screw threaded boss (13d) of the first case body (13), and the second case body (14) is connected to the edge (e1, e) of the recess (14d). e2 and e3) are overlapped with the first case body (13) in a form that matches the recess-side outer surface portion (20b) of the strap attachment portion (20), and the screw insertion hole portion of the screw insertion boss portion (14e). (14e ') and the screw (27) that has passed through the screw insertion hole (21a) of the attached plate (21) to the screw screw hole (13d') of the screw screw boss (13d). By screwing, the attached plate portion (21) is connected to the first case book. (13) and RFID tag, characterized in that fixed between the second case body (14). The engagement hole portion of the engagement boss portion (13c) (13C'), said corner portions corresponding to the concave portion (14d) in said first case body (13) and (13K1), forming a pair therewith It is on a virtual diagonal line (K) passing through the corner (13k3), has a circular shape,
The protrusion (24) has a quadrangular cross section in a direction perpendicular to the insertion direction, and a pair of parallel sides (24a, 24b) of the quadrangle is orthogonal to the virtual diagonal (K). In addition, another set of two parallel sides (24c, 24d) is formed in a direction parallel to the virtual diagonal line (K), and the protrusion (24) is formed in the circular engagement hole (13c). The RFID tag according to claim 1, wherein the RFID tag is press-fitted with respect to ').

Images