Snap locking angle adjustable device, in particular a carpenter's square
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B43L-007/10
B43L-007/00
출원번호
US-0735851
(2003-12-16)
우선권정보
SE-0230705-9(2002-12-16)
발명자
/ 주소
Larsson,Svante
출원인 / 주소
Plano System AB
대리인 / 주소
Nixon &
인용정보
피인용 횟수 :
13인용 특허 :
20
초록▼
The invention is a snap locking angle adjustable device, particularly applicable to carpenter's squares. Carpenter's squares, being used in rough environment, must be simple to adjust while providing robust snap locking at high angle precision. Prior art attains this by protruding steel balls, attac
The invention is a snap locking angle adjustable device, particularly applicable to carpenter's squares. Carpenter's squares, being used in rough environment, must be simple to adjust while providing robust snap locking at high angle precision. Prior art attains this by protruding steel balls, attached around the pivot axis of the square's handle, pressed strongly against a hole punched area around the pivot axis of the square's blade-balls aligns to holes gives the snap locking. The problem is to simplify manufacturing. The invention comprises components with moulded alignment structures. These components are the complete pivot members (handle or blade) themselves, or are separately attached to the pivot members. The components, and optionally, are sandwiched, alignment structures against each other, and axially pressed together strongly by a spring held in compression by a press frame that also may constitute a pivot shaft for the pivot members.
대표청구항▼
The invention claimed is: 1. A carpenter's square comprising: a blade and a handle, rotatable relative to each other around a pivot axis; and a snap locking angle adjustable device including: a first contacting element having a first alignment structure that rotates rigidly with the blade around th
The invention claimed is: 1. A carpenter's square comprising: a blade and a handle, rotatable relative to each other around a pivot axis; and a snap locking angle adjustable device including: a first contacting element having a first alignment structure that rotates rigidly with the blade around the pivot axis; a second contacting element having complementary first alignment structure that rotates rigidly with the handle around the pivot axis; and a spring that, in conjunction with a spring expansion-restricting device, presses the first alignment structure axially against the complementary first alignment structure; wherein: the first alignment structure and the complementary first alignment structure align at certain angles between the blade and the handle, at which the spring force is reduced compared to at angles where they do not align; the spring expansion-restricting device comprises position-limiting members, in between which the spring and the contacting elements are placed, rigidly held together by connecting structure, and each one of the contacting elements with its alignment structure is a single unit formed by a moulding technique. 2. The carpenter's square according to claim 1, wherein the first pivot member and the first contacting element are separate components joined to each other by structure that rigidly connects these components with respect to rotations around the pivot axis. 3. The carpenter's square according to claim 1, wherein the second pivot member and the second contacting element are separate components joined to each other by structure that rigidly connects these components with respect to rotations around the pivot axis. 4. The carpenter's square according to claim 3, further comprising a third contacting element having a third alignment structure that rotates rigidly with the first pivot member around the pivot axis; and a fourth contacting element having complementary third alignment structure that rotates rigidly with the second pivot member around the pivot axis, wherein the spring, in conjunction with the spring expansion-restricting device, presses the third alignment structure axially against the complementary third alignment structure, and the third alignment structure and the complementary third alignment structure align at certain angles between the pivot members, at which the spring force is reduced compared to at angles where they do not align. 5. The carpenter's square according to claim 1, wherein the distance between the position-limiting members can be changed by an axial screw coupling of the connecting structure, allowing for adjustment of the spring force. 6. The carpenter's square according to claim 1, wherein the combination of a sleeve on one of the first contacting element or the second contacting element and a sleeve groove on the other of the first contacting element or the second contacting element, aligns and secures the first and second contacting elements and the pivot members on the pivot axis. 7. The carpenter's square according to claim 1, wherein the spring is positioned between the blade and the handle. 8. The carpenter's square according to claim 1, wherein the handle and the blade align at 45째 intervals. 9. The carpenter's square according to claim 1, wherein the handle and the blade align at 22.5째 intervals. 10. The carpenter's square according to claim 1, wherein the handle has an upper face and a lower face defining a space therebetween. 11. The carpenter's square according to claim 10, wherein the space receives at least a portion of the adjustable device. 12. The carpenter's square according to claim 11, wherein the space receives at least a portion of the blade. 13. The carpenter's square according to claim 1, wherein the first contacting element has a first anchoring structure non-rotatably mounted to the blade. 14. The carpenter's square according to claim 13, wherein the first anchoring structure includes a plurality of protrusions that engage with complementary shaped holes in the blade. 15. The carpenter's square according to claim 1, wherein the second contacting element has a second anchoring structure non-rotatably mounted to the handle. 16. The carpenter's square according to claim 15, wherein the second anchoring structure includes a plate received with a recess formed in the handle. 17. The carpenter's square according to claim 15, wherein the second anchoring structure includes a plate with a plurality of grooves that interlock with a plurality of protrusions formed in the handle. 18. Snap locking angle adjustable device, comprising: a first pivot member and a second pivot member, rotatable relative to each other around a pivot axis; a first contacting element having a first alignment structure that rotates rigidly with the first pivot member around the pivot axis; a second contacting element having complementary first alignment structure that rotates rigidly with the second pivot member around the pivot axis; a spring that, in conjunction with a spring expansion-restricting device, presses the first alignment structure axially against the complementary first alignment structure; a third contacting element having a third alignment structure that rotates rigidly with the first pivot member around the pivot axis; and a fourth contacting element having a complementary third alignment structure that rotates rigidly with the second pivot member around the pivot axis, wherein: the first alignment structure and the complementary first alignment structure align at certain angles between the pivot members, at which the spring force is reduced compared to at angles where they do not align, the spring expansion-restricting device comprises position-limiting members, in between which the spring and the contacting elements are placed, rigidly held together by connecting structure, the second pivot member and the second contacting element are separate components joined to each other by structure that rigidly connects these components with respect to rotations around the pivot axis, the spring, in conjunction with the spring expansion-restricting device, presses the third alignment structure axially against the complementary third alignment structure, and the third alignment structure and the complementary third alignment structure align at certain angles between the pivot members, at which the spring force is reduced compared to at angles where they do not align. 19. The snap locking angle adjustable device according to claim 18, wherein the distance between the position-limiting members can be changed by an axial screw coupling of the connecting structure, allowing for adjustment of the spring force. 20. The snap locking angle adjustable device according to claim 18, wherein the first and second contacting elements are provided with a sleeve and a sleeve groove assembly that aligns and secures the first and second contacting elements and the pivot members on the pivot axis. 21. A carpenter's square including the snap angle adjustable device according to claim 18. 22. A miter saw including the snap angle adjustable device according to claim 18. 23. A carpenter's square comprising: a blade and a handle, rotatable relative to each other around a pivot axis; and a snap locking angle adjustable device including: a first contacting element having a first alignment structure that rotates rigidly with the blade around the pivot axis, the first contacting element being positioned between the blade and the handle; a second contacting element having complementary first alignment structure that rotates rigidly with the handle around the pivot axis; and a spring that, in conjunction with a spring expansion-restricting device, presses the first alignment structure axially against the complementary first alignment structure; wherein: the first alignment structure and the complementary first alignment structure align at certain angles between the pivot members, at which the spring force is reduced compared to at angles where they do not align; the spring expansion-restricting device comprises position-limiting members, in between which the spring and the contacting elements are placed, rigidly held together by connecting structure, each one of the contacting elements with its alignment structure is a single unit formed by a moulding technique, the first pivot member and the first contacting element are separate components joined to each other by structure that rigidly connects these components with respect to rotations around the pivot axis, and the second pivot member and the second contacting element are separate components joined to each other by structure that rigidly connects these components with respect to rotations around the pivot axis. 24. A carpenter's square comprising: a blade and a handle, rotatable relative to each other around a pivot axis; and a snap locking angle adjustable device including: a first molded contacting element having a first alignment structure that rotates rigidly with the blade around the pivot axis; a second molded contacting element having complementary first alignment structure that rotates rigidly with the handle around the pivot axis; and a spring to bias the first alignment structure axially against the complementary first alignment structure; wherein: the first alignment structure and the complementary first alignment structure align at 22.5째 or 45째 intervals when the blade and the handle pivot between 0째-180째, at which 22.5째 or 45째 intervals the spring force is reduced compared to at angles where they do not align. 25. The carpenter's square according to claim 24, wherein the spring is positioned between the blade and the handle. 26. The carpenter's square according to claim 24, further comprising a spring expansion-restriction device to sandwich the blade, handle, and first and second contacting elements. 27. The carpenter's square according to claim 24, further comprising third and fourth molded contacting elements positioned between the first and second contacting elements. 28. The carpenter's square according to claim 24, wherein the handle has an upper face and a lower face defining a space therebetween. 29. The carpenter's square according to claim 28, wherein the space receives at least a portion of the adjustable device. 30. The carpenter's square according to claim 29, wherein the space receives at least a portion of the blade. 31. The carpenter's square according to claim 24, wherein the first contacting element has a first anchoring structure non-rotatably mounted to the blade. 32. The carpenter's square according to claim 31, wherein the first anchoring structure includes a plurality of protrusions that engage with complementary shaped holes in the blade. 33. The carpenter's square according to claim 24, wherein the second contacting element has a second anchoring structure non-rotatably mounted to the handle. 34. The carpenter's square according to claim 33, wherein the second anchoring structure includes a plate received with a recess formed in the handle. 35. The carpenter's square according to claim 33, wherein the second anchoring structure includes a plate with a plurality of grooves that interlock with a plurality of protrusions formed in the handle. 36. A carpenter's square comprising: a blade and a handle, rotatable relative to each other around a pivot axis; and a snap locking angle adjustable device including: a first contacting element having a first alignment structure that rotates rigidly with the blade around the pivot axis; a second contacting element having complementary first alignment structure that rotates rigidly with the handle around the pivot axis; and a spring positioned between the blade and the handle, the spring pressing the first alignment structure axially against the complementary first alignment structure; wherein: the first alignment structure and the complementary first alignment structure align at certain angles between the pivot members, at which the spring force is reduced compared to at angles where they do not align. 37. The carpenter's square according to claim 36, wherein each one of the first and second contacting elements with its alignment structure comprises a single molded unit. 38. The carpenter's square according to claim 36, wherein the first contacting element is positioned between the blade and the handle. 39. The carpenter's square according to claim 36, wherein each of the blade, the handle, the first and second contacting elements and the spring includes a through hole to receive a spring expansion-restricting device.
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