초록 ▼

A pivot hinge for a portable electronic device is disclosed. A base plate with a pivot tube is fixed on the main unit of the portable electronic device, and a locating bracket is fixed on the movable display panel. A shaft is inserted through the pivot tube, exposing the angular section from the ot

A pivot hinge for a portable electronic device is disclosed. A base plate with a pivot tube is fixed on the main unit of the portable electronic device, and a locating bracket is fixed on the movable display panel. A shaft is inserted through the pivot tube, exposing the angular section from the other end of the pivot tube. A locking piece, a spring, and a ring are sequentially inserted over the angular section to complete the spring assembly. The interlocking of the tooth and notch enables the movable display panel to be placed in the horizontal direction over the main unit. A middle section of the shaft and the pivot tube are closely mated only when two plain facets respectively formed on the shaft and the pivot tube are matched up in the rotation of the shaft, thus abrasion damage is significantly reduced.

대표청구항 ▼

What is claimed is: 1. A pivot hinge comprising a base plate (10), a shaft (20), a spring (40), a ring (50) and a locking piece (60), wherein the base plate (10) has a first end defined with plural locating holes (11) for securing the pivot hinge onto an electronic device, and has a pivot tube (12)

What is claimed is: 1. A pivot hinge comprising a base plate (10), a shaft (20), a spring (40), a ring (50) and a locking piece (60), wherein the base plate (10) has a first end defined with plural locating holes (11) for securing the pivot hinge onto an electronic device, and has a pivot tube (12) formed on a second end of the base plate (10), wherein the pivot tube (12) defines a gap (121) having an edge from which a first plain facet (13) extends, and a tooth (131) erects from a first end of the first plain facet (13); the locking piece (60) has an oval hole (61) defined in its center, and a notch (62) defined on a perimeter of the locking piece (60) to correspond to the tooth (131) when the notch (62) and the tooth (131) are engaged; the shaft (20) has a head end, a bottom end and a middle section connected between the head end and the bottom end, wherein the middle section having an external surface on which a second plain facet (23) is formed, and an angular section (22) with a locating block (221) is formed on the head end of the shaft ( 20) to be inserted through the oval hole (61) of the locking piece (60); the middle section of the shaft (20) and the pivot tube (12) are closely mated only when the second plain facet ( 23) and the first plain facet (13) are correspondingly matched up in rotation of the shaft (20) around the pivot tube (12); and the head end of the shaft (20) is inserted in the pivot tube (12) so that the middle section of the shaft (20) is received in the pivot tube (12) and the angular section ( 22) is exposed, whereafter the locking piece (60), the spring (40) and the ring (50) are sequentially mounted over the exposed angular section (22) of the shaft (20). 2. The pivot hinge according to claim 1, wherein a cone shaped spur extends outward from the pivot tube (12) to form the tooth (131) to engage the notch (62) oil the locking piece (60) when the pivot hinge is in the locking position. 3. The pivot hinge according to claim 2, wherein the angular section (22) has a first end connected to the middle section of the shaft (20) and has a second end to which the locating block (221) is formed, wherein a diameter of the angular section is equal to an external diameter of the pivot tube (12). 4. The pivot hinge according to claim 3, wherein the pivot hinge further has a locating bracket (30) defined with an oval hole (31), wherein a locating block (211) extending from a circular section (21) forms two flat opposite surfaces and is inserted through the oval hole (31) of the locating bracket ( 30) in order to secure the shaft (20) in assembling the pivot hinge. 5. The pivot hinge according to claim 4, wherein the base plate (10) has at least one locating hole (11) defined in one end of the base plate for fixing the base plate (10) onto a portable electronic device. 6. The pivot hinge according to claim 5, wherein the locating bracket (30) has multiple locating holes (32) for fixing the locating bracket (30) onto the electronic device. 7. The pivot hinge according to claim 1, wherein the angular section (22) has a first end connected to the middle section of the shaft (20) and has a second end to which the locating block (221) is formed, wherein a diameter of the angular section is equal to an external diameter of the pivot tube (12). 8. The pivot hinge according to claim 7, wherein the pivot hinge further has a locating bracket (30) defined with an oval hole (31), wherein a locating block (211) extending from a circular section (21) forms two flat opposite surfaces and is inserted through the oval hole (31) of the locating bracket ( 30) in order to secure the shaft (20) in assembling the pivot hinge. 9. The pivot hinge according to claim 8, wherein the base plate (10) has at least one locating hole (11) defined in one end of the base plate for fixing the base plate (10) onto an electronic device. 10. The pivot hinge according to claim 9, wherein the locating bracket (30) has multiple locating holes (32) for fixing the locating bracket (30) onto the electronic device.