IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0854539
(2007-09-12)
|
등록번호 |
US-7530245
(2009-07-01)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Eversafety Precision Industry (Tianjin) Co., Ltd.
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
12 |
초록
▼
A door lock includes outer assemblies, latch assemblies and inner assemblies. The inner assemblies has a turning switch, fixing bolts, an interior rose and a detent device that includes an inner plate, a stop plate, a stop seat, a rotating spring, a retaining spring and a sprag. By pressing down the
A door lock includes outer assemblies, latch assemblies and inner assemblies. The inner assemblies has a turning switch, fixing bolts, an interior rose and a detent device that includes an inner plate, a stop plate, a stop seat, a rotating spring, a retaining spring and a sprag. By pressing down the stop plate as the latch bolt is in a casing, a protruding block of the stop seat is engaged with a protruding member of the stop plate. The spindle can not rotate backward and maintains in an unlocked state. After the stop plate is pressed upward, the turning switch returns to a locked state and the latch bolt extends out of the casing. Therefore, the detent device can keep the latch bolt in the casing and keep the lock in the unlocked state.
대표청구항
▼
What is claimed is: 1. A door lock, comprising outer assemblies, latch assemblies and inner assemblies including a turning switch, fixing bolts, an interior rose and a detent device, wherein the detent device comprises: an inner plate including a guiding track projected from a surface of an upper p
What is claimed is: 1. A door lock, comprising outer assemblies, latch assemblies and inner assemblies including a turning switch, fixing bolts, an interior rose and a detent device, wherein the detent device comprises: an inner plate including a guiding track projected from a surface of an upper portion thereof, a stop plate including an opening at a lower portion thereof, a protruding member perpendicular to the stop plate at a middle portion thereof, and elongated protrusions corresponding to the guiding track at an upper portion thereof, thereby making the stop plate capable of sliding along the guiding track up and down; a stop seat, a hollow stepped cylinder, including a front cylinder having a positioning surface disposed at a front surface thereof, a protruding block disposed at the edge thereof, and a spring holding member projected axially from the edge thereof on the opposing side to the protruding block; a rotating spring engaged with the stop seat and including two ends formed with a spring arm respectively and disposed at both sides of the spring holding member respectively; a retaining spring disposed in a hollow portion of the stop seat and engaged with a revolving axis of the turning switch together with the stop seat, and a sprag pressed on the retaining spring for fixing and positioning the retaining spring. 2. The door lock as claimed in claim 1, wherein the disk-shaped inner plate includes two notches oppositely formed on the edge thereof, thereby being engaged with both ends of the stop plate. 3. The door lock as claimed in claim 2, wherein the interior rose has a disk shape corresponding to the inner plate and includes two notches formed in two opposite positions on the edge thereof respectively; the inner plate is fitted in the interior rose, and an inner surface of the interior rose is contacted with an outer surface of the inner plate; and the notches of the interior rose is corresponding to the notches of the inner plate. 4. The door lock as claimed in claim 1, wherein a protruding piece perpendicular to a body surface of the inner plate is formed on the lower portion of the inner plate and passes through the opening of the stop plate. 5. The door lock as claimed in claim 1, wherein a back cylinder of the stop seat includes a protrusion for restricting the axial movement of the rotating spring. 6. The door lock as claimed in claim 1, wherein the hollow portion of the stop seat is assembled with a positioning surface of the revolving axis of the turning switch. 7. The door lock as claimed in claim 1, wherein the stop plate comprises a bulge on the surface contacted with the inner plate, and the inner plate comprises two indentations arranged in vertical direction and corresponding to the bulge; before the stop plate is pressed, the bulge of the stop plate is engaged with the higher indentation; after the stop plate is pressed to be engaged with the stop seat, the bulge of the stop plate is engaged with the lower indentation. 8. The door lock as claimed in claim 1, wherein the both ends of the stop plate are respectively bended to form a horizontal pressing surface. 9. The door lock as claimed in claim 8, wherein each of the horizontal pressing surfaces is covered with a rubber cover. 10. The door lock as claimed in claim 1, wherein the two side edges of the protruding block of the stop seat are formed with two ends, which are a first assembling point and a second assembling point. 11. The door lock as claimed in claim 1, wherein the sprag is in a "C" shape.
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