Bottle
The present invention is a bottle that is formed from a synthetic resin material in a cylindrical shape having a bottom at one end, including: a plurality of circumferential grooves that extend continuously around the entire circumference of a body portion and are formed at a distance from each other in a vertical direction. The circumferential grooves extend cyclically in a circumferential direction while undulating in the vertical direction when viewed from the side of the body portion as to form wave patterns, and the respective phases of circumferential grooves that are mutually adjacent to each other in the vertical direction are offset from each other.
1. A bottle that is formed from a synthetic resin material in a cylindrical shape having a bottom at one end, comprising:
circumferential grooves that extend continuously around the entire circumference of a body portion and are formed at a distance from each other in a vertical direction,
wherein the circumferential grooves extend cyclically in a circumferential direction while undulating up and down in a vertical direction when viewing the body portion from the side thereof, the bottle having a central axis extending in the vertical direction,
wherein each of the circumferential grooves forms a wave pattern including an upper tip portion that is a tip portion of a hill portion, the upper tip portion forming an upwardly protruding curve, and a lower tip portion that is a tip portion of a valley portion, the lower tip portion forming a downwardly protruding curve, and an intermediate portion which connects the upper tip portion and the lower tip portion when viewing the body portion from the side thereof,
wherein the circumferential grooves are formed such that, phases along the vertical direction of two wave patterns of any two of the circumferential grooves that are mutually adjacent to each other without any circumferential grooves located therebetween, are offset from each other,
wherein the circumferential grooves are formed such that, the upper tip portion of one circumferential groove of the any two circumferential grooves that are mutually adjacent to each other in the vertical direction without any circumferential grooves located therebetween is located along a first axis of the body portion that is parallel with the central axis of the bottle and the lower tip portion of the same one circumferential groove is located along a second axis of the body portion that is parallel with the central axis of the bottle, the first axis and the second axis being spaced apart from each other in a circumferential direction of the bottle with the intermediate portion extending between the first axis and the second axis, and the upper tip portion or the lower tip portion of the other circumferential groove of the any two circumferential grooves that are mutually adjacent to each other in the vertical direction without any circumferential grooves located therebetween is located along a third axis of the body portion that is parallel with the central axis of the bottle, the third axis being located between the first axis and the second axis in the circumferential direction of the bottle such that the third axis intersects with the intermediate portion of the one circumferential groove, and
wherein the circumferential grooves are formed such that one cycle is formed by a 90° angular range centered on the central axis of the bottle.
2. The bottle according to claim 1 , wherein the circumferential grooves have the same shape and size as each other.
3. The bottle according to claim 2 , wherein the bottle includes a bottom wall portion provided with:
a grounding portion that is positioned at an outer circumferential edge thereof;
a rising circumferential wall portion that continues on from an inner side in the bottle radial direction of the grounding portion and extends upwards;
an annular movable wall portion that protrudes from an upper end of the rising circumferential wall portion towards the inner side in the bottle radial direction; and
a recessed circumferential wall portion that extends upwards from an inner end in the bottle radial direction of the movable wall portion, wherein
the movable wall portion is provided such that it is able to pivot freely around a connected portion with the rising circumferential wall portion so as to cause the recessed circumferential wall portion to move in a vertical direction.
4. The bottle according to claim 1 , wherein the bottle includes a bottom wall portion provided with:
a grounding portion that is positioned at an outer circumferential edge thereof;
a rising circumferential wall portion that continues on from an inner side in the bottle radial direction of the grounding portion and extends upwards;
an annular movable wall portion that protrudes from an upper end of the rising circumferential wall portion towards the inner side in the bottle radial direction; and
a recessed circumferential wall portion that extends upwards from an inner end in the bottle radial direction of the movable wall portion, wherein
the movable wall portion is provided such that it is able to pivot freely around a connected portion with the rising circumferential wall portion so as to cause the recessed circumferential wall portion to move in a vertical direction.
5. The bottle according to claim 1 , wherein the one and other circumferential grooves of any two of the circumferential grooves mutually adjacent to each other without any circumferential grooves located therebetween, are offset 11.25° from each other in the circumferential direction around the central axis of the bottle.
6. The bottle according to claim 1 , wherein the one and other circumferential grooves of any two of the circumferential grooves mutually adjacent to each other without any circumferential grooves located therebetween, are offset 22.5° from each other in the circumferential direction around the central axis of the bottle.