Adjustable door lock

Abstract

A door lock includes a main part including an axial tube and a connection tube extending on two ends thereof. A mounting plate has a mounting hole and at least one first engaging portion. A first plate has at least one second engaging portion which faces the mounting plate. Multiple first fixing members extend through the first plate and are not connected to the mounting plate. A second plate is mounted to the connection tube and includes multiple positioning holes. Multiple fastening members extend through the positioning holes and are connected to the first fixing members. The second connection portion is threadedly connected to the first connection portion to adjust a distance between the mounting plate and the main part so that the door lock can be installed to doors of different thicknesses.

Claims

1. A door lock comprising: a main part including an axial tube and a connection tube both extending axially from the main part in opposite directions, the connection tube having a first connection portion formed thereon, a latch retractably and radially connected to the main part; a mounting plate having at least one first engaging portion and a mounting hole with a second connection portion formed therein, the connection tube extending through the mounting hole, the second connection portion being connected to the first connection portion, a distance between the mounting plate and the main part being adjustable responsive to rotation of the mounting plate relative to the connection tube; a first plate having at least one second engaging portion which faces the mounting plate, the first plate including a bore through which the connection tube extends, multiple first fixing members extending through the first plate and being devoid of a connection to the mounting plate; a second plate having a through hole formed therein and the axial tube extends through the through hole of the second plate; two sleeves respectively mounted to the axial tube and the connection tube, and two handles each having a tubular portion mounted to a respective one of the sleeves and extending through an opening defined in a collar corresponding thereto, the sleeves each have a radial slot and an installation slot communicating with the radial slot, a shifting part has two branches and a restriction portion extending in a direction opposite to a direction of the two branches, an extension extends perpendicularly from one side of the restriction portion, a shoulder being formed between the restriction portion and each of the two branches, a fixing portion extends from a root portion between the two branches of the shifting part, the shoulder being located in correspondence with the radial slot, the shifting part being inserted into each of the sleeves, a resilient member being connected to the fixing portion, an end of the resilient member located opposite to the fixing portion being engaged with the installation slot, the resilient member biases the shifting part to extend the restriction portion and the extension into the radial slot, the shoulders being engaged with an inside wall of the sleeve, the tubular portion includes an engaging slot located in correspondence to the restriction portion and the extension, the extension being aligned and in open communication with an aperture defined in an inside wall of the engaging slot; and a driving member axially extending through the two sleeves, the driving member being coupled to a lock core on one end thereof and being configured to contact the fixing portion of each shifting part in a locked position to block displacement thereof and be spaced from the fixing portion of each shifting part in an unlocked position to unblock displacement of the shifting parts.

2. The door lock as claimed in claim 1, wherein the second plate includes multiple positioning holes and multiple fastening members extend through the positioning holes and are connected to the first fixing members of the first plate.

3. The door lock as claimed in claim 1, wherein the first connection portion includes outer threads and the second connection portion includes inner threads which are threadedly connected to the first connection portion, when the mounting plate is rotated, a relative position between the second connection portion and the first connection portion is adjustable.

4. The door lock as claimed in claim 1, wherein the fastening members are bolts, the first fixing members are tubular members and the fastening members are axially and threadedly connected to the first fixing members.

5. The door lock as claimed in claim 1, wherein the at least one first engaging portion is a notch, the at least one second engaging portion is a ridge protruding from the first plate.

6. The door lock as claimed in claim 1, wherein the main part is located in a passage in a door, the first plate is mounted to the mounting plate and connected to one side of the door, the second plate is connected to another side of the door.

7. The door lock as claimed in claim 1, wherein the mounting plate includes at least one serrated portion protruding from one side thereof.

8. The door lock as claimed in claim 1, wherein at least one second fixing member extends through the second plate and toward the main part, the at least one second fixing member is connected to a receiving portion on the main part.

9. A door lock comprising: a main part including an axial tube and a connection tube both extending axially from the main part in opposite directions, the connection tube having a first connection portion formed thereon, a latch retractably and radially connected to the main part; a mounting plate having at least one first engaging portion and a mounting hole with a second connection portion formed therein, the connection tube extending through the mounting hole, the second connection portion being connected to the first connection portion, a distance between the mounting plate and the main part being adjustable responsive to rotation of the mounting plate relative to the connection tube; a first plate having at least one second engaging portion which faces the mounting plate, the first plate including a bore through which the connection tube extends; a second plate having a through hole formed therein and the axial tube extends through the through hole of the second plate, the second plate includes multiple positioning holes; two sleeves respectively mounted to the axial tube and the connection tube and two handles each being coupled to a corresponding one of the sleeves, a lock core disposed in one of the sleeves and having one end thereof exposed through an opening in a corresponding one of the two handles, the lock core being coupled to the latch through a connection to the main part, wherein the latch is extended responsive to the lock core being in a locked position and the latch is retracted responsive to the lock core being in an unlocked position; and multiple first fixing members extending through the first plate and being devoid of a connection to the mounting plate and multiple fastening members extend through the positioning holes of the second plate and are connected to the first fixing members of the first plate, wherein a distance between diametrically opposed first fixing members is greater than a diameter of the mounting plate, whereby the first plate is displaceable from proximity to the mounting plate without removal of the handles from the sleeves and the mounting plate then rotated to adjust the distance between the main part and the mounting plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view to show the door lock of the present invention;

(2) FIG. 2 is an exploded view of the door lock of the present invention;

(3) FIG. 3 is a cross sectional view, taken along line A-A of FIG. 1;

(4) FIG. 4 shows another angle of the first plate of the door lock of the present invention;

(5) FIG. 5 is a cross sectional view, taken along line B-B of FIGS. 1 and 3;

(6) FIG. 6 is a cross sectional view, taken along line B-B of FIGS. 1 and 3, and also shows that the restriction portion of the shifting part is separated from the engaging slot;

(7) FIG. 7 is a cross sectional view, taken along line C-C of FIG. 1, and also shows that the lock has one end thereof connected to the door;

(8) FIG. 8 is a cross sectional view, taken along line C-C of FIG. 1, and also shows that the lock is connected to the door;

(9) FIG. 9 shows another angle of the mounting plate of the door lock of the present invention;

(10) FIG. 10 is a cross sectional view, taken along line A-A of FIG. 1, and also shows that the lock is adjusted to its largest scale to be connected to a door with a large thickness, and

(11) FIG. 11 is a cross sectional view, taken along line C-C of FIG. 1, and also shows that the lock is adjusted to its largest scale to be connected to a door with a large thickness.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(12) Referring to FIGS. 1 to 3, the door lock of the present invention is disclosed, and comprises a main part 1 which includes an axial tube 11 and a connection tube 12 extending in the axial direction “L” and in opposite direction from the main part 1. The connection tube 12 has a first connection portion 121 formed thereto. A latch 13 is retractably connected to the main part 1 in the radial direction “R”.

(13) A mounting plate 2 has a mounting hole 21 and at least one first engaging portion 22. The diameter of the mounting plate 2 is larger than that of the main part 1. The connection tube 12 extends through the mounting hole 21, and the mounting hole 21 includes a second connection portion 23 which is connected to the first connection portion 121. The distance in the axial direction “L” between the mounting plate 2 and the main part 1 is adjustable by rotating the mounting plate 2 relative to the first connection portion 121.

(14) The first connection portion 121 includes outer threads and the second connection portion 23 includes inner threads which are threadedly connected to the first connection portion 121. When the mounting plate 2 is rotated, a relative position between the second connection portion 23 and the first connection portion 121 is adjustable. That is to say, the distance between the mounting plate 2 and the main part 1 is adjusted.

(15) A first plate 3 has at least one second engaging portion 31 which faces the at least one first engaging portion 22 of the mounting plate 2. The diameter of the first plate 3 is larger than that of the mounting plate 2 and the main part 1. In one embodiment, the at least one first engaging portion 22 is a notch, and the at least one second engaging portion 31 is a ridge protruding from the first plate 3. The at least one first engaging portion 22 is a notch that is defined along the periphery of the mounting plate 2, and the at least one second engaging portion 31 is a ridge protruding from the first plate 3 as shown in FIG. 4. The ridge is engaged with the notch so that the two parts are rotated in the same direction. Alternatively, the at least one first engaging portion 22 can be a ridge, and the at least one second engaging portion 31 can be a notch. The first plate 3 includes a bore 32 through which the connection tube 12 extends. Multiple first fixing members 33 extend through the first plate 3 and are not connected to the mounting plate 2.

(16) A second plate 4 includes a through hole 41 and the axial tube 11 extends through the through hole 41 of the second plate 4. The diameter of the second plate 4 is larger than that of the main part 1. The second plate 4 includes multiple positioning holes 42 and multiple fastening members 43 extend through the positioning holes 42 and are connected to the first fixing members 33 of the first plate 3. In one embodiment, the fastening members 43 each include a head 431 and a fastening portion 432, wherein the diameter of the head 431 is larger than that of the positioning hole 42 corresponding thereto. The fastening portion 432 extends through the positioning hole 42 and is fixedly connected to the first fixing member 33 corresponding thereto. In one embodiment, the fastening members 43 are bolts, and the first fixing members 33 are tubular members. The fastening members 43 are axially and threadedly connected to the first fixing members 33. Because the mounting plate 2 is able to be adjusted the distance between the mounting plate 2 and the second plate 4, so that the length of the first fixing members 33 and the fastening members 43 is made to be long enough to be connected to each other when a maximum distance between the mounting plate 2 and the second plate 4 is formed, and when the second connection portion 23 is threadedly connected to the first connection portion 121 with only few threads.

(17) At least one second fixing member 44 extends through the second plate 4 and toward the main part 1. The at least one second fixing member 44 is connected to a receiving portion 14 on the main part 1. The main part 1 includes a housing 15 to protect the latch 13 of the door lock, and the receiving portion 14 is connected to the housing 15. Preferably, the receiving portion 14 is located in the housing 15. The housing 15 includes a connection hole 151 through which the at least one second fixing member 44 extend. The at least one second fixing member 44 can be integrally formed with the second plate 4 or can be connected to the second plate 4. Therefore, the second plate 4 is axially and stably connected to the main part 1, by the connection between the at least one second fixing members 44 and the receiving portion 14, and the second plate 4 is prevented from shifting or rotating by any force applied thereto.

(18) In order to protect the main part 1, the second plate 4, the mounting plate 2, and the first plate 3, in one embodiment, there are two collars 5 respectively mounted to the first and second plates 3, 4. Each collar 5 has a recessed area 51 that faces the main part 1, and the first and second plates 3, 4 are respectively accommodated in the two respective recessed areas 51 of the two collars 5. Each collar 5 includes an opening 52.

(19) In order to unlock or lock the door lock, two handles 6 are installed to the door lock, and the handles 6 can be rotated to unlock or lock the door lock. Two sleeves 7 are respectively mounted to the axial tube 11 and the connection tube 12 via the opening 52. The handles 6 each can be an L-shaped or ball-shaped. Each handle 6 has a tubular portion 61, and the tubular portion 61 is mounted to the sleeve 7 corresponding thereto and extends through the opening 52 defined in the collar 5 corresponding thereto.

(20) Preferably, the sleeves 7 each have a radial slot 71 and an installation slot 72 communicates with the radial slot 71. A Y-shaped shifting part 73 is located in each sleeve 7, and has two branches and a restriction portion 732 which extends toward a direction opposite to the two branches. An extension 733 extends perpendicularly from one side of the restriction portion 732. A shoulder 731 is formed between the restriction portion 732 and the outside of each branch. A fixing portion 734 extends from a root portion between the two branches of the shifting part 73. The shoulder 731 is located corresponding to the radial slot 71. A resilient member 74 is connected to the fixing portion 734, and one end of the resilient member 74 that is located opposite to the fixing portion 734 is engaged with the installation slot 72. The resilient member 74 biases the shifting part 73 to extend the restriction portion 732 and the extension 733 into the radial slot 71. The shoulders 731 are engaged with the inside wall of the sleeve 7. In one embodiment, the resilient member 74 is C-shaped part and has a bent portion 741 on the top thereof so as to be connected to the fixing portion 734.

(21) The tubular portion 61 includes an engaging slot 62 which is located corresponding to the restriction portion 732 and the extension 733. The extension 733 extends through an aperture 63 defined in the inside wall of the engaging slot 62. The aperture 63 is located to face outside of the collar 5 and opposite to the main part 1. The extension 733 is located aligned to the aperture 63 so that the sleeve 7 and the core 8/8′ are conveniently installed, and makes the handle 6 to be easily assembled and dis-assembled. When the shifting part 73 is not yet pressed, the restriction portion 732 and the extension 733 are located at the positions as shown in FIGS. 3 and 5. When a tool is inserted into the aperture 63 and presses the extension 733 as shown in FIG. 6, the shifting part 73 is moved and disengaged from the engaging slot 62, such that the tubular portion 61 is axially removed from the sleeve 7. It is noted that the position of the aperture 63 cannot be seen in FIGS. 5 and 6, and only a portion of the engaging slot 62 can be seen.

(22) The door lock is locked or unlocked by using the cores 8, 8′ to transmit main part 1. In one embodiment, the core 8/8′ is installed in the sleeve 7 and the distal end of the core 8/8′ is exposed beyond the handle 6, and the other end of the core 8/8′ is connected to the main part 1 via the opening 52, the through hole 41 and the axial tube 11, or via the mounting hole 21, bore 32 and the connection tube 12. The core 8/8′ can be a lock cylinder or a knob-type cylinder. In one embodiment, the core 8 is a lock cylinder that is located at outside of the door, and the core 8′ is a knob-type cylinder that is located at inside of the door. The core 8 has to be unlocked by using a correct key, and the core 8′ can be unlocked simply by rotating the knob.

(23) In order to prevent the handle 6 from being removed by pressing the shifting part 73 via the aperture 63 when the door locked is in unlocked status, the core 8/8′ has a driving member 81 and the driving member 81 is connected to the main part 1. When the core 8 is located at a locked position as shown in FIG. 5, the driving member 81 is restricted by the fixing portion 734 of the shifting part 73 so that the shifting part 73 cannot be moved. When the core 8 is located at an unlocked position as shown in FIG. 6, the driving member 81 is not restricted by the fixing portion 734 of the shifting part 73. The shifting part 73 is movable and toward the resilient member 74. The driving member 81 is a rectangular member to achieve the above mentioned purposes.

(24) As shown in FIGS. 3, 7 and 8, the main part 1 is located in a passage 91 of a door 9. The latch 13 is located in a hole (not shown) in the door 9 that communicates with the passage 91. The latch 13 does not protrude beyond the hole when the door lock is unlocked. The latch 13 protrudes beyond the hole when the door lock is locked. The first plate 3 is mounted to the mounting plate 2 and connected to one side of the door 9. The second plate 4 is connected to another side of the door 9. The diameter of the second plate 4 and the mounting plate 2 is larger than that of the passage 91. The door 9 is sandwiched between the second plate 4 and the mounting plate 2. As shown in FIG. 7, when installing the door lock to a door 9, the main part 1 is pre-connected to one side of the second plate 4 so that when the second plate 4 contacts the door 9, the main part 1 can be inserted into the passage 91. As shown in FIG. 8, the second connection portion 23 of the mounting plate 2 is connected to the first connection portion 121, and the distance between the mounting plate 2 and the main part 1 can be adjusted according to the thickness of the door 9. The mounting plate 2 is locked to contact the door 9, and the thickness of the door 9 is equal to the distance between the mounting plate 2 and the second plate 4. As shown in FIG. 9, in one embodiment, the mounting plate 2 includes at least one serrated portion 24 protruding from one side thereof so that when the second connection portion 23 of the mounting plate 2 is connected to the first connection portion 121, a tool is engaged with the at least one serrated portion 24 as shown in FIG. 8 to rotate the mounting plate 2 and the second connection portion 23 to control the relative position between the second connection portion 23 of the mounting plate 2 and the first connection portion 121.

(25) After the mounting plate 2 contacts the door 9, the first plate 3 is connected to the mounting plate 2, and the at least one first engaging portion 22 is engaged with the at least one second engaging portion 31. Then the fastening members 43 are connected to the first fixing members 33. The head 431 of each fastening member 43 contacts against the second plate 4 so that the first plate 3 is securely connected to the second plate 4 by the fastening members 43. The first plate 3 is axially connected to the second plate 4 and cannot be rotate by the connection between the at least one first engaging portion 22 and the at least one second engaging portion 31. Therefore, the first plate 3 does not loose and removed from the first connection portion 121.

(26) As shown in FIGS. 10 and 11, when the door has a thick thickness, the second connection portion 23 of the mounting plate 2 is connected to the first connection portion 121 to install the mounting plate 2 to contact the door 9. The distance between the mounting plate 2 and the second plate 4 is adjustable so as to meet the thickness of the door 9. On the contrary, when the thickness of the door 9 is thin, the installation of the door lock is similar.

(27) It is noted that when a maximum distance between the mounting plate 2 and the second plate 4 is reached, the aperture 63 is still exposed and does not covered by the collar 5, so that the shifting part 73 and the aperture 63 are located at the door lock and are opposite to the collar 5. Therefore, the aperture 63 is still exposed and does not covered by the collar 7 when the door lock is installed to a thick door, and the handle 6 can successfully assembled and dis-assembled.

(28) While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.