Ring type wearable terminal and flexible substrate
A ring type wearable terminal is provided with a ring and a communication unit that is housed in the ring. The communication unit is provided with a ring-shaped flexible substrate. The flexible substrate is provided with a bonding portion formed such that the bonding portion can be bonded at a plurality of different positions in a longitudinal direction in accordance with the size of the ring. By changing a bonding position of the bonding portion, the diameter of the flexible substrate formed in a ring shape can match the size of the ring. Thereby, a single flexible substrate can be used for a ring of multiple sizes, and an increase in the manufacturing cost when offering a size range of multiple sizes can thus be prevented.
1. A wearable ring terminal comprising:
a first ring that has a first side edge, a second side edge and a recessed portion formed between the first side edge and the second side edge on an outer surface of the first ring;
a second ring that has an inner most circumferential surface that is bonded to the first ring and covers the recessed portion, the first side edge and the second side edge of the first ring contacting the inner most circumferential surface of the second ring; and
a communication unit that is housed in the recessed portion of the first ring,
wherein the communication unit is provided with a ring-shaped flexible substrate,
wherein the flexible substrate is provided with a bonding portion formed such that the bonding portion can be bonded at a plurality of different positions in a longitudinal direction in accordance with a size of the wearable ring terminal,
wherein an entirety of the first ring fits inside an area circumferentially surrounded by the inner most circumferential surface of the second ring,
wherein the flexible substrate further comprising:
a positioning portion that projects toward an outside from a side edge of each end portion of the flexible substrate in the longitudinal direction,
wherein the positioning portion is formed such that the positioning portion can be overlapped at the plurality of different positions in the longitudinal direction, and
wherein the bonding portion is formed such that the bonding portion can be bonded at a position where the positioning portion is overlapped.
2. The wearable ring terminal according to claim 1 ,
wherein the flexible substrate is provided with a plurality of linear patterns that extend in the longitudinal direction, and
wherein the bonding portion is formed at each end portion of the plurality of linear patterns.
3. The wearable ring terminal according to claim 2 , wherein the plurality of linear patterns form a single loop antenna while the bonding portion is bonded.
4. The wearable ring terminal according to claim 2 ,
wherein the plurality of linear patterns are formed on opposite surfaces of the flexible substrate, and
wherein the flexible substrate is provided with a plurality of connection holes through which the plurality of linear patterns on the opposite surfaces are connected.
5. The wearable ring terminal according to claim 1 , wherein
the first ring includes an inner side notch formed on a whole circumference of the first ring,
the inner side notch includes a first inclined surface formed such that an outer diameter of the first ring becomes smaller toward either of the first side edge and the second side edge of the first ring,
the second ring includes an outer side notch formed on a whole circumference of the second ring,
the outer side notch includes a second inclined surface formed such that an inner diameter of the second ring becomes larger toward a side edge of the second ring, and
the first ring and the second ring are bonded by an adhesive agent that fills a notch portion formed by the inner side notch of the first ring and the outer side notch of the second ring.
6. The wearable ring terminal according to claim 1 , wherein
the first ring has a first width in an axial direction of the wearable ring terminal,
the second ring has a second width in the axial direction of the wearable ring terminal, and
the first width of the first ring is the same as the second width of the second ring.
7. The wearable ring terminal according to claim 1 , wherein
the first ring and the second ring have the same color or a combination of different colors in complementary color relationship.
8. The wearable ring terminal according to claim 1 , wherein the first ring and the second ring are formed of high-strength ceramics.