摘要：
The present invention relates to a portable chair (10) with an extended supporting state, where the chair can support a normal person in a standing position by telescopically arranged support elements (5, 50), and a non-extended, compact state. Two seating elements (20a, 20b) forms both a seating bar (20) in the extended, supporting state of the chair, and a cover for the supporting elements in a non-extended, compact state of the chair. The portable chair is mechanically locked in the extended state by relative turning a first and a second adjacent support element in a transverse direction of the portable chair. Thereby a simple and compact portable chair is provided, which can be manufactured in a cost- effective way, in particular using injection moulding. Moreover, the chair is very user friendly because the chair is quickly transformed from the compact to the extended state and locked in this state.
权利要求：
CLAIMS
1. A portable chair (10), the chair having an extended supporting state, where the chair can support a normal person in a standing position, and a non- extended, compact state, the chair comprising :
-a first plurality (N) of telescopically arranged support elements (5, 50), and
-two seating elements (20a, 20b), the two seating elements being pivotally arranged on an uppermost support element (50), the two seating elements forming :
- a seating bar (20) in the extended, supporting state of the chair, and
- a cover for the supporting elements in a non-extended, compact state of the chair, wherein a first support element (5') and a second support element (5") from the first plurality of support elements are adjacent support elements, the second support element having a second (M) plurality of peripherally positioned locking sections (5a) positioned on an exterior part of the second support element, each locking section further having a third (L) plurality of locking protrusions (5b), the second (M) plurality of locking sections being arranged for sliding in a
corresponding number of sliding recessions (5c) in an interior part of the first support element (5'), the first and second support elements being arranged for relative movement in a longitudinal direction of the chair by sliding said locking sections (5a) in said corresponding sliding recessions (5c) so as to transform the chair from said non-extended, compact state to said extended, supporting state, the sliding recessions each having an end part (5d) defining the maximum longitudinal extension of the first and second support element, and wherein the portable chair is further arranged for mechanically locking the first and second support elements relative to each other by relative turning the first and second support elements in a transverse direction of the portable chair, the end part of the sliding recessions (5d) having a corresponding number of locking indentations (5e) for receiving the third (L) plurality of locking protrusions (5b) upon relative turning of the first and the second support elements.
2. A portable chair (10) according to claim 1, wherein the first support element (5') have a larger cross-sectional diameter relative to the second support element (5").
3. A portable chair (10) according to claim 1 or 2, wherein the said locking sections are arranged for sliding in said corresponding number of sliding recessions in the interior part of the first support element (5a) thereby restricting said first and second support elements to displacement substantially in a longitudinal direction of the portable chair.
4. A portable chair (10) according to any of the preceding claims, wherein the said locking indentations (5e) for receiving the third (L) plurality of locking protrusions have a contracted area relative to the corresponding locking protrusions (5b) so as to increase mechanical locking upon relative turning of the first and the second support element. 5. A portable chair (10) according to any of the preceding claims, wherein said third (P) plurality of locking protrusions (5b) have a wedge-like profile relative to the corresponding locking indentations (5e) so as to increase mechanical locking upon relative turning of the first and the second support element.
6. A portable chair (10) according to any of the preceding claims, wherein said locking indentations (5e) for receiving the third (L) plurality of locking protrusions (5b) - upon relative turning of the first and second support elements - receives the locking protrusions in direction less than orthogonal relative to the longitudinal direction of the chair, preferably around 70-82 degrees with the longitudinal direction of the chair.
7. A portable chair (10) according to any of the preceding claims, wherein the support elements (5, 50) are co-axially arranged relative to each other, and the support elements further being confined within each other in a consecutive order
in the non-extended, compact state of the portable chair, preferably the support elements being coaxially arranged with an uppermost support element (50) having the largest cross-sectional diameter. 8. A portable chair (10) according to any of the preceding claims, wherein the first plurality of telescopically arranged support elements (5) are manufactured in a polymer composition.
9. A portable chair (10) according to any of the preceding claims, wherein the portable chair further comprises a seat locking member (31), the seat locking member being displaceably arranged along a longitudinal direction of the portable chair, the seat locking member having a non-locking position and a locking position, and in said locking position the two seating members (20a, 20b) are mechanically locked by the seat locking member (31) to form said seating bar in the extended, supporting state of the chair.
10. A portable chair (10) according to claim 9, wherein the seat locking member forms a displaceable cylindrical element around the uppermost support element (50).
11. A portable chair (10) according to claim 9 or 10, wherein the uppermost support element (50) has a fourth (O) plurality of peripherally positioned locking sections (50a) positioned on the exterior part of the uppermost support element, each locking section further having a fifth (P) plurality of locking protrusions, the fourth (O) plurality of locking sections being arranged for sliding in a
corresponding number of sliding recessions in the interior part of the seat locking member (31).
12. A portable chair (10) according to any of claims 9-11, wherein the seat locking member has a corresponding number of locking indentations for receiving the fifth (P) plurality of locking protrusions upon relative turning of the seat locking member and the uppermost support element, the chair being arranged for mechanically locking the seat locking member (31) in the said locking position by relative turning the seat locking member (31) and the uppermost support element (50) in a transverse direction of the portable chair.
13. A portable chair (10) according to any of the preceding claims, wherein the seating elements (20a, 20b) are arranged pivotally around a common rotational axis, the common rotational axis being positioned at an upper position on the uppermost supporting element (50).
14. A portable chair (10) according to any of the preceding claims, wherein the seating elements (20a, 20b) each has the shape of a half-pipe, the two seating elements forming a cylindrical cover surrounding the telescopic elements when the portable chair is in the non-extended, compact state, preferably the cylindrical cover thereby resembling a standard beverage can, more preferably a 0.5 L can having a height of approximately 168 mm and a diameter of approximately 52 mm, or a can with a height of approximately 170 mm and a diameter of approximately 66 mm, or a can with a height of approximately 180.1 mm and a diameter of approximately 63.5 mm.
15. A computer program product being adapted to enable a computer system comprising at least one computer having data storage means in connection therewith to control a manufacturing system or device, preferably an additive manufacturing system or device or a three-dimensional (3D) printing system or device, for producing a portable chair according to any of the preceding claims.