CN113167082A

CN113167082A - Door lock

Info

Publication number: CN113167082A
Application number: CN201880100186.4A
Authority: CN
Inventors: 李祯祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2021-07-23
Anticipated expiration: 2038-12-14
Also published as: DE112018008207T5; WO2020118653A1; CN113167082B

Abstract

A door lock (250) comprising an assembly base (251) fixed to the inside of a door and a first gear (293) and a second gear (331) pivoted to the assembly base (251), a first engagement member (335) movably coupled to the assembly base (251), a first latch (415) coupled to the first engagement member (335) in a synchronously displaceable manner, an inner handle (433) rotatably coupled to the second gear (311) together, the first latch (415) being movable to an unlatched position or an unlatched position by switching the lock device to the unlocked state and rotating the first gear or rotating the second gear using the inner handle.

Description

Door lock

Technical Field

The present invention relates to a door lock, and more particularly, to a door lock installed on a door to prevent the door from being opened or to move a latch to an unlatching position so that the door can be opened by moving the latch to the unlatching position from an outside using a lock device or from an inside using an inside handle.

Background

One conventional folding door of the prior art has two panels that can pivot relative to each other, and when the folding door is closed, the two panels are aligned end to end, and when the folding door is opened, the two panels fold together to reduce the space occupied by the folding door, so that the folding door is more suitable for use in a small space (e.g., a bathroom).

The folding door is generally installed in a space which does not necessarily need to be locked, so that the folding door does not have a function of anti-theft locking, and in detail, the folding door includes a latch which is engaged with a latch hole when the folding door is closed, so that the folding door cannot be opened, but the latch does not have a locking function, so that anyone can easily separate the latch from the latch hole to open the door.

Disclosure of Invention

In one aspect, the door lock of the present invention comprises: an assembly base including a first pivot portion, a first gear pivotally connected to the first pivot portion, the first gear including an upper locking wall portion and an lower unlocking wall portion spaced from each other in a circumferential direction about an axis of the first pivot portion, a lock device coupled to the first gear, the lock device being pivotally connected to the first gear, the lock device being further pivotally connected to the first pivot portion, the lock device being switchable between an upper locking state engaged with the first pivot portion and an lower unlocking state separated from the first pivot portion, the lock device being non-pivotable in the upper locking state and pivotable in the lower unlocking state, a driver piece movably received in the lock device, the driver piece including an outer end positioned inside the lock device when the lock device is operated in the upper locking state, the outer end of the driver piece being positioned outside the lock device and interposed between the upper locking wall portion and the lower unlocking wall portion in the circumferential direction about the axis of the first pivot portion The first connecting piece is movably combined with the assembling seat and comprises a first rack meshed with the first gear, a first bolt and a first bolt, the first bolt is combined with the first connecting piece and moves together with the first connecting piece, the first bolt can be displaced between an upper latching position and an unlocking position, when the lock device is operated to be in an unlocking state, the first bolt is pivoted to the outer end of the driving piece by the axis of the first pivot part and presses against the upper latching wall part of the first gear, the first connecting piece is linked with the first bolt to be displaced from the upper latching position to the unlocking position, and when the outer end of the driving piece presses against the unlocking wall part of the first gear, the first connecting piece is linked with the first bolt to be displaced from the unlocking position to the upper latching position.

The door lock of the present invention provides a lock device for operating the first and second latches to be displaced to the latched or unlatched position, so that the door (in the form of a folding door) has a function of locking or unlocking from the outside, providing an anti-theft effect.

In one embodiment, the door lock further comprises: and the locking plates are movably accommodated in the locking device, each locking plate comprises an embedded end, when the locking device is operated to be in an locked state, the embedded end of each locking plate is embedded with the embedded groove of the first pivot part, and when the locking device is operated to be in an unlocked state, the embedded end of each locking plate is separated from the embedded groove of the first pivot part.

In one embodiment, the door lock further comprises: a key removably engaged with the lock device, the lock device being operable to an unlocked state when the key is engaged with the keyway and to a locked state when the key is disengaged from the keyway.

In one embodiment, the door lock, wherein the locking wall portion and the unlocking wall portion are circumferentially spaced apart about the first pivot axis by a distance greater than the outer end of the driving plate, the lock device is in the unlocked state and is allowed to pivot to either an aligned position or a non-aligned position, when the lock device is in the unlocked state and in the non-aligned position and the first latch is in the latched position, the lock device does not pivot the first gear when pivoting from the non-aligned position to the aligned position, the first latch is retained in the latched position, when the lock device is in the unlocked state and in the non-aligned position and the first latch is in the unlatched position, the lock device pivots from the non-aligned position to the aligned position without pivoting the first gear, the first latch is retained in the unlatched position, and when the lock device is in the unlocked state and in the aligned position, the engagement end of each locking plate is aligned with the engagement groove of the assembly seat, and when the lock device is in an unlocked state and is positioned in a non-aligned position, the embedded end of each lock plate is not aligned with the embedded groove of the assembly seat, and the key and the lock device are not allowed to be separated.

In one embodiment, the door lock further comprises: a second gear, the assembly seat further comprising an inner surface and an outer surface, the first pivot portion being disposed on the inner surface, the assembly seat further comprising a second pivot portion spaced apart from the first pivot portion and disposed on the inner surface, the second gear being pivotally connected to the second pivot portion and being engaged with the first rack of the first link, the second gear being disengaged from the first gear; and an inner handle combined with the second gear, the inner handle and the second gear pivot together, the inner handle is arranged on the outer surface of the assembly seat, and the locking device is arranged on the inner surface of the assembly seat, no matter the locking device is operated to be in an locking state or an unlocking state, when the inner handle pivots to link the second gear to pivot, the first link displacement causes the first latch to displace to one position of an upper latching position or an unlocking position, further, the locking device does not pivot, and the first gear is linked by the first rack to pivot.

In one embodiment, the door lock further comprises: a second coupling member movably coupled to the assembly stand, the second coupling member including a second rack, the first and second racks being engaged with the first gear and located at both sides of the first gear, respectively, the first and second coupling members being driven by the first gear to be displaced in parallel but opposite directions when the first gear pivots; and a second latch coupled to the second engagement member, the second latch moving with the second engagement member, the second latch being displaceable between an unlatched position and an unlatched position, the second latch being in the unlatched position when the first latch is in the latched position and the second latch being in the unlatched position when the first latch is in the unlatched position.

In one embodiment, the door lock further comprises a first gear having a first end surface and a second end surface spaced apart from the first end surface, the first gear further comprising a first movable groove formed in the first end surface, the first movable groove including the upper locking wall portion and the lower unlocking wall portion, the first gear further comprising a stopper formed on an outer peripheral surface thereof, the stopper being located in the second movable groove, an outer end of the driving piece being located in the first movable groove when the lock device is in the unlocked state.

In one embodiment, the door latch wherein the assembly seat further comprises a first tab and the first link further comprises a first track, the first tab slidably engaging the first track of the first link.

In one aspect, the door lock of the present invention comprises: an assembly base including a first pivot portion and a second pivot portion, a first gear pivotally connected to the first pivot portion, a second gear pivotally connected to the second pivot portion, a lock device coupled to the first gear, the lock device being operable to be in a locked state or an unlocked state, the lock device being incapable of linking the first gear to pivot in the locked state and linking the first gear to pivot together in the unlocked state, an inner handle coupled to the second gear, the inner handle pivoting together with the second gear, a first linking member movably coupled to the assembly base, the first linking member including a first rack engaged with the first and second gears; and a first latch coupled to the first engaging member, the first latch moving with the first engaging member, the first gear pushing the first engaging member when the operation lock device is pivoted, the first latch being displaced between a latched position and an unlatched position; and when the inner handle is pivoted, the second gear pushes the first engaging piece, and the first latch is displaced between the latching position and the unlatching position.

In one embodiment, the door lock further comprises: a second coupling member movably coupled to the assembly base, the second coupling member including a second rack engaged with the first and second gears, the first and second gears being positioned between the first and second gears, the first and second coupling members being pushed by one of the first and second gears to be displaced in parallel but in opposite directions when the one of the first and second gears is pivoted; and a second latch coupled to the second engagement member, the second latch moving with the second engagement member, the second latch being displaceable between a latched position and an unlatched position, the second latch being in the latched position when the first latch is in the latched position and the second latch being in the unlatched position when the first latch is in the unlatched position.

The door lock can selectively operate the inner handle or the lock device to operate the first bolt and the second bolt to move to the upper bolt position or the lower bolt position, and can also use the inner handle to operate the first bolt and the second bolt to move to the lower bolt position even if the lock device is used to operate the first bolt and the second bolt to move to the upper bolt position.

The present invention will become more apparent from the detailed description given below of illustrative embodiments of the invention when taken in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a front view of a door equipped with a door lock according to the present invention.

Fig. 2 is an elevation view at another angle from fig. 1.

Fig. 3 is an exploded perspective view of fig. 1.

Fig. 4 is an exploded perspective view of the lock device and the first gear of the door lock of fig. 1.

Fig. 5 is another exploded perspective view of the door lock of fig. 1.

Fig. 6 is a cross-sectional view taken along 6-6 of fig. 1.

Fig. 7 is a cross-sectional view taken along 7-7 of fig. 6.

Fig. 8 is a cross-sectional view taken along 8-8 of fig. 6.

Fig. 9 is a cross-sectional view taken along 9-9 of fig. 6.

Fig. 10 is a cross-sectional view taken along 10-10 of fig. 6.

Fig. 11 is a view similar to fig. 10 and showing the lock device of the door lock switched to the unlocked state.

Fig. 12 is a cross-sectional view taken along line 12-12 of fig. 11.

Fig. 13 is a cross-sectional view taken along line 13-13 of fig. 11.

Fig. 14 is a cross-sectional view of the door lock of fig. 1 with a key displacing the first and second bolts to a locked position.

Fig. 15 is a cross-sectional view of the door lock of fig. 1 after the first and second latches have been displaced to an unlocked position and the locking device has been reset to an aligned position.

Fig. 16 is a cross-sectional view of the first and second latches of the door lock of fig. 1 moved to an unlatched position and the lock device in a non-aligned position.

Fig. 17 is a cross-sectional view of the first and second latches of the door lock of fig. 1 being operated to an upper latch position by a lock mechanism.

Fig. 18 is a cross-sectional view of the first and second latches of the door lock of fig. 1 operated to an upper latch position using an inner handle.

Fig. 19 is a sectional view taken along line 19-19 of fig. 18.

Detailed Description

The drawings are only for purposes of illustrating the general teachings, and are not intended to limit the number, position, relationship, and dimensions of the elements making up the illustrated embodiments to the particular embodiments described, or to the extent that the following description is read and understood as being conventional in the art. Further, it is common in the art to change the exact dimensions and dimensional proportions to conform to specific force, weight, strength, and similar requirements after reading and understanding the following description.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "bottom," "top," "inner," "outer," "side," "end," "portion," "segment," "longitudinal," "axial," "radial," "circumferential," "horizontal," "transverse," "vertical," "inner," "spacing," "length," "width," "thickness," "axial," and the like may be used herein for convenience in referring to the structures in the drawings and to aid in describing the illustrative embodiments only.

The door lock 250 of the present invention may be installed in a foldable door 1, the door lock 250 being configured to provide a locking function when the door 11 is closed to keep the door 11 in a closed state, the door 11 including a first plate 20 and a second plate 177, the first and

second plates

20, 177 being assembled into a left-hand foldable door according to fig. 1-2. The first plate 20 includes a first end 25 and a second end 27 spaced apart from the first end 25 in the width direction, and the first plate 20 further includes an upper end 22 and a lower end 24 spaced apart from the upper end 22 in a vertical direction perpendicular to the width direction.

The door 11 further includes a first frame 173 and a first outer frame 192 spaced apart from the first frame 173 in a width direction, the first frame 173 includes a mounting space 173A (vertical direction in the present embodiment) extending along a length direction, the first frame 173 further includes an opening 173B extending from an outer side surface along a thickness direction perpendicular to the width direction and the vertical direction to the mounting space 173A, and the first frame 173 is fixed to the second end 27 of the first plate 20. The first frame 192 is fixed to the first end 25 of the first plate 20, and a roller 193 is fixed to a top end of the first frame 192.

The door 11 further includes a second plate 177 including a first side 179 and a second side 191 spaced apart from the first side 179 in the width direction. A second bezel 176 is mounted on the first side 179 of the second plate 177, a second outer frame 194 is fixed to the second side 191 of the second plate 177, and two pivots 195 are fixed to the top and bottom ends of the second bezel 176, respectively. The first and

second rims

173, 176 are pivotally connected together to pivotally connect the first and

second panels

20, 177.

The door 11 is mounted inside a door frame 197 fixed to the wall surface of the doorway, and the door frame 197 includes an upper rail beam 197A extending laterally and upwardly, and the upper rail beam 197A has an upper latch hole 198A. A lower latch opening 198B is formed in the floor surface aligned with the upper latch opening 198A, two pivot shafts 195 are pivotally mounted to one side of the door frame 197, and the roller 193 is adapted to be slidably received in the upper track guide 197A such that the second plate 177 is pivotable about a pivot axis defined by the center lines of the two pivot shafts 195, and when the second plate 177 is pivoted, the first plate 20 is moved until the end surfaces of the first and

second plates

20, 177 are aligned with each other (closed state) or until the first and

second plates

20, 177 are folded (open state).

Referring to fig. 3-8, the door lock 250 includes an assembly seat 251 fixed to the door 11, the assembly seat 251 including an inner surface 253 and an outer surface 255 spaced from the inner surface 253 in a thickness direction. A first pivot portion 271 and a second pivot portion 279 are provided on the inner surface 253 of the assembly seat 251 and are spaced apart from each other in the vertical direction, wherein the first pivot portion 271 includes a first shaft hole 273 extending along the axis of the first pivot portion 271, and the first pivot portion 271 further includes a fitting groove 275 extending from the inner surface to the outer peripheral surface of the first shaft hole 273. One restricting piece 277 is provided on the outer peripheral surface of the first pivot portion 271 and spaced from the fitting groove 275 in the circumferential direction of the axis of the first pivot portion 271.

The second pivot portion 279 includes a second shaft bore 291 that extends along the axis defined by the second pivot portion 279 to the outer surface 255 of the assembly block 215. Two first protrusions 257 and two second protrusions 259 are disposed on the inner surface 253 of the assembly seat 251, the first pivot portion 271 is located between the two first protrusions 257 and the second pivot portion 279 in the vertical direction, and the second pivot portion 279 is located between the first pivot portion 271 and the two second protrusions 259 in the vertical direction.

The door lock 250 further includes a first gear 293 pivotally coupled to the assembly housing 251 and a second gear 331 pivotally coupled to the assembly housing 251, wherein the first gear 293 includes a first end face 295 and a second end face 297 spaced apart from the first end face 295 in a thickness direction, the first gear 293 further includes a pivot hole 315 extending from the first end face 295 to the second end face 297, the first gear 293 also includes a first movable groove 299 formed on the first end face 295, the first movable groove 299 includes an upper locking wall portion 311 and an unlocking wall portion 313 spaced apart in a circumferential direction along an axis of the first pivot portion 271. In this embodiment, the upper locking wall portion 311 is spaced 90 apart from the unlocking wall portion 313, and the first gear 293 includes a second movable groove 319 formed in a second end surface 297. The first gear 293 is pivotally connected to the first pivot portion 271, the second end surface 297 of the first gear 293 faces the inner surface 253 of the assembly seat 251, the upper locking wall portion 311 of the first gear 293 is substantially parallel to the fitting groove 275, and the limiting block 277 of the first pivot portion 271 is received in the second movable groove 319 of the first gear 293, so that the first gear 293 can only pivot (about 90 °) within the range of the second movable groove 319.

The second gear 331 includes an assembling hole 333, the second gear 331 is pivotally connected to the second pivot portion 279, and the first gear 293 and the second gear 331 are not engaged with each other (as shown in fig. 7 and 8).

The door lock 250 also includes a first coupling member 335 movably coupled to the assembly seat 251 and a second coupling member 353, wherein the first coupling member 335 includes a first coupling portion 337 and a first rack 339 extending from one end of the first coupling portion 337, and the first coupling member 335 further includes two first rails 351 formed at the first coupling portion 337 and extending in parallel with the first rack 339. The two first protrusions 257 of the assembling base 251 are movably received in the two first tracks 351 of the first linking member 335, and the first rack 339 of the first linking member 335 is engaged with the first and second gears 293, 331 (as shown in fig. 7), so that the first gear 293 pivots to link the first linking member 335 to move, and the first rack 339 of the first linking member 335 links the second gear 331 to pivot in the same pivoting direction as the first gear 293, or when the second gear 331 pivots to link the first linking member 335 to move, the first rack 339 of the first linking member 335 links the first gear 293 to pivot in the same pivoting direction as the second gear 331.

The second coupling member 353 includes a second coupling portion 355 and a second rack 357 extending from one end of the second coupling portion 355, and the second coupling member 353 includes two second rails 359 formed on the second coupling portion 355 and parallel to the second rack 357. The two second protrusions 259 of the assembly seat 251 are movably received in the two second tracks 359 of the second coupling member 353, and the second rack 357 of the second coupling member 353 is engaged with the first and second gears 293, 331 (as shown in fig. 7), specifically, the first and

second gears

293, 331 are located between the first and

second gears

339, 357, the first coupling member 335 faces the upper track beam 197A of the door 11, the second coupling member 353 faces the ground, such that the first gear 293 pivots to link the first and

second coupling members

335, 353 to displace, and the first and second gears 357 of the first and

second coupling members

335, 353 link the second gear 331 to pivot in the same direction as the first gear 293, or when the second gear 331 pivots to link the first and

second coupling members

335, 353 to displace, the first and

second gears

339, 339 of the first and

second coupling members

353, 357 links the first gear 293 to pivot in the same direction as the rotation direction of the second gear 331.

Referring to fig. 3, the first link 335 is coupled to one end of a first link 417, and the other end of the first link 417 is coupled to a first latch 415, and the second link 353 is coupled to one end of a second link 431, and the other end of the second link 431 is coupled to a second latch 419, and when the first and second links 335 are displaced, the first and

second latches

415, 419 are synchronously displaced to a latched position (shown in fig. 1) or an unlatched position (shown in fig. 17).

Referring to fig. 3, 4 and 6, the door lock 250 further includes a lock device 371 engageable with the first pivot portion 271, a catch tab 393 and a plurality of locking tabs 399, the lock device 371 including a flange 373 and a barrel 375 extending from an end surface of the flange 373 along an axis of the first pivot portion 271, the lock device 371 further including a key hole 377 extending from an end surface along an axial direction of the first pivot portion 271, the barrel 375 including a catch tab groove 379 extending radially inward from an outer peripheral surface of the barrel 375 and intersecting the key hole 377. The barrel 375 further includes a plurality of blade grooves 391 extending radially inward from the outer circumferential surface of the barrel 375 and intersecting the keyway 377.

The driving plate 393 comprises an outer end 395 and a first aligning hole 397 extending from one side surface of the driving plate 393 to the other side surface of the driving plate 393, and the driving plate 393 is movably accommodated in the driving plate groove 379. Further, the catch 393 is biased at a location where the outer end 395 is located inside the catch recess 379 (as shown in fig. 6 and 7). It is noted that the unlocking wall portion 313 is spaced apart from the upper locking wall portion 311 in the circumferential direction of the longitudinal axis of the first pivot portion 271 by a larger distance than the outer end 395 of the driving piece 393.

Each of the locking pieces 399 includes a fitting end 411 and a second aligning hole 413 extending from one side surface of the corresponding locking piece 399 to the other side surface of the corresponding locking piece 399, and the positions of the second aligning holes 413 of the locking pieces 399 are different. Each of the locking pieces 399 is respectively received in one of the locking piece grooves 391 and is biased by a spring at a position where the fitting end 411 is located outside the barrel 375 (as shown in fig. 6 and 8), and the outer end 395 of the driving piece 393 is spaced 180 ° apart from the fitting end 411 of each of the locking pieces 399 in the circumferential direction of the axis of the first pivot portion 271.

The lock device 371 is pivotally coupled with the pivot hole 315 of the first gear 293 and is pivotable together with the first gear 293, and the lock device 371 is also pivotally connected with the first shaft hole 273 of the first pivot portion 271, in this embodiment, the flange 373 of the lock device 371 is located outside the first end surface 295 of the first gear 293, the barrel 375 is located in the pivot hole 315 of the first gear 293 and the first pivot hole 273 of the first pivot portion 271, the driving plate 393 is aligned with the first movable groove 299 of the first gear 293 along the axis of the first pivot 271, each locking plate 399 is aligned with the fitting groove 275 along the axis of the first pivot 271, and the locking device 371 can pivot along the axis of the first pivot 271 to an aligned position where the fitting end 411 of each locking plate 399 is aligned with the fitting groove 275 along the circumferential direction of the axis of the first pivot 271 and a non-aligned position where the fitting end 411 of each locking plate 399 is not aligned with the fitting groove 275 along the circumferential direction of the axis of the first pivot 271.

The first aligning hole 397 of the driving plate 393 and the second aligning holes 413 of the locking plates 399 are matched with a key 437 to operate the locking device 371 to an unlocked state, and in detail, when the locking device 371 is located at an aligned position and the key 437 is not combined with the keyhole 377, the engaging end 411 of each locking plate 399 is located in the engaging groove 275, so that the locking device 371 cannot be pivoted, the state of the locking device 371 is defined as a locked state (as shown in fig. 6 and 8), when the key 437 is combined with the keyhole 377, the locking plates 399 are pushed by the key 437 to be displaced to a position where the engaging ends 411 are retracted in the locking plate grooves 391 of the locking device 371 (as shown in fig. 11 and 13), so that the locking device 371 can be pivoted by the key 437 and the state of the locking device 371 is defined as an unlocked state, and further when the locking device is set to the locked state, the outer end 395 of the driving plate 393 is positioned inside the driving groove 379 (as shown in fig. 7), and when the lock device 371 is set to the unlocking state, the outer end 395 of the driving plate 393 is positioned outside the driving plate groove 379 (as shown in fig. 11 and 12).

The door lock 250 is installed in the installation space 173A of the first rim 173, and a head of the lock device 371 is received inside the opening 173B of the first rim 173, the first latch 415 facing the upper end 22 of the door 11 and being adjacent to the upper rail beam 197A, and the second latch 419 facing the lower end 24 of the door 11.

The door lock 250 also includes an inner handle 433, and the inner handle 433 includes an assembly end 435. The inner handle 433 is adapted to be installed at a side opposite to the locking device 371, and the inner handle 433 is adapted to be located at a side inside the chamber, referring to fig. 5 and 6, the locking device 371 is installed at a side opposite to the inner surface 253 of the assembly seat 251, the inner handle 433 needs to be installed at a side opposite to the outer surface 255 of the assembly seat 251, and the assembly end 435 of the inner handle 433 passes through the first rim 173 and the second axis hole 291 of the assembly seat 251 and is combined with the assembly hole 333 of the second gear 331, so that pivoting the inner handle 433 can drive the second gear 331 to pivot and drive the first and

second engagement members

335 and 353 to displace.

Now that the basic construction of the door 11 and lock device 250 of the present invention has been elucidated, the operation and some advantages of the door 11 and the lock device 250 can be proposed and appreciated. For convenience of description, it is assumed that the end surfaces of the first and second plates 20, 177 are aligned with the end surfaces (closed state), the first and second latches 415, 419 are located at the unlatching position (shown in fig. 1), the first latch 415 is separated from the upper latch hole 198A and the second latch 419 is separated from the lower latch hole 198B (shown in fig. 1, 2), the lock device 371 is located at the aligned position (shown in fig. 7, 8), it is further assumed that the key 437 is not engaged with the key hole 377 of the lock device 371, and thus the lock device 371 operates in the latched state, the engaging end 411 of each latch 399 is engaged with the engaging groove 275 of the assembly base 251 to prevent the lock device 371 from pivoting, further, the outer end 395 of the driver 393 is located within the driver groove 379, the upper wall portion 311 of the first gear 293 is substantially parallel to the driver 393, and the unlatching wall portion 313 is substantially perpendicular to the driver 393 (shown in fig. 7), thus, the first and second latches 415, 419 are aligned with but not engaged with the upper latch opening 198A and the lower latch opening 198B, respectively, i.e., the door 11 is in a state allowing the first and second panels 20, 177 to be at an acute angle or fully opened.

If the door 11 is locked so that the door 11 cannot be opened when the door 11 is in the closed state, assuming that the operator is located on the side (usually the inside) of the door 11 having the inner handle 433, the operator needs to pivot the inner handle 433 from the vertical state (as shown in fig. 1) to the horizontal state (as shown in fig. 18 and 19) so that the second gear 331 pivots, the second gear 331 pushes the first and second engaging

members

335 and 353 to move in parallel but opposite directions, further the first and

second latches

415 and 419 are displaced from the unlatched position (as shown in fig. 1) to the latched position (as shown in fig. 18), and when the first and second engaging

members

335 and 353 are displaced, the first and

second gears

339 and 357 link the first gear 293 to pivot to a position where the upper wall portion 311 is substantially perpendicular to the driver blade 393 and the unlatching wall portion 313 is substantially parallel to the driver blade 393. Referring to fig. 7 and 15, since the lock device 371 is in the non-pivotable locked state and the outer end 395 of the driving tab 393 is located inside the driving tab slot 379, the lock device 371 is maintained in the aligned position when the first gear 293 is pivoted.

When the first and

second latches

415, 419 are at the latching position, the first latch 415 is engaged with the upper latch hole 198A and the second latch 419 is engaged with the lower latch hole 198B, so that the first rim 173 is fixed and cannot move or rotate, and the door 11 cannot be opened.

The inner handle 433 can be directly used to operate the first and

second latches

415, 419 to displace to the unlatched position in a state where the first and

second latches

415, 419 are both in the latched position. In detail, referring to fig. 15 and 19, only by rotating the inner handle 433 from the horizontal state to the vertical state and reversing the second gear 331, the first and second engaging

members

335 and 353 are displaced in parallel until the first and

second latches

415 and 419 are displaced to the unlatching position, and similarly, when the first and second engaging

members

335 and 353 are displaced, the first and

second racks

339 and 357 link the first gear 293 to pivot and return to the position where the upper lock wall portion 311 and the driving plate 393 are parallel (as shown in fig. 7), and when the first and

second latches

415 and 419 are returned to the unlatching position, the first latch 415 is separated from the upper latch hole 198A and the second latch 419 is separated from the lower latch hole 198B, thereby allowing the door 11 to be opened.

Alternatively, the operator is located on the side (outside) of the door 11 where the lock device 371 is installed, and when the first and

second latches

415 and 419 are located at the unlatching position, the key 437 can be engaged with the key hole 377 of the lock device 371, and the key 437 pushes each locking piece 399 to be displaced along the corresponding locking piece groove 391 to a position where each engaging end 411 is separated from the engaging groove 275 of the first pivot portion 271 (as shown in fig. 13), so that the lock device is operated to be in the pivotally unlatched state, and the key 437 also pushes the driving piece 393 to be displaced, so that the outer end 395 of the driving piece 393 is displaced into the first movable groove 299 of the first gear 293 (as shown in fig. 12), and the outer end 395 of the driving piece 393 abuts on the side of the upper locking wall portion 311 of the first gear 293.

After the lock device 371 is operated to the unlocking state, the lock device 371 can be pivoted towards the direction of the upper wall portion 311 by using the key 437, so that the outer end 395 of the driving piece 393 is pressed against the unlocking wall portion 311 to pivot the first gear 293, causing the first and second engaging

members

335 and 353 to be displaced oppositely in parallel to link the first and

second latches

415 and 419 to be displaced from the unlocking position to the unlocking position, and the first and second gear racks 339 and 357 are linked to pivot the second gear 331, so that the inner handle 433 is pivoted from the vertical state to the horizontal state.

When the first and second latches 415, 419 are displaced to the latching position, the lock device 371 is pivoted to the non-aligned position in a state in which the fitting ends 411 of the respective lock pieces 399 are respectively spaced from the fitting grooves 275 in the circumferential direction of the axis of the first pivot portion 271 (as shown in fig. 14), and in a state in which the key 437 cannot be separated from the key hole 377, in which case the first and second latches 415, 419 are located at the latching position despite reversing the lock device 371 to the aligned position, because the lock device 371 is located at the non-aligned position (the outer end 395 of the driving piece 393 is spaced 90 ° from the unlocking wall portion 313 about the circumferential direction of the first pivot portion 271), so that the first gear 293 does not move when the lock device 371 is pivoted from the non-aligned position to the aligned position, and when the lock device 371 is located at the aligned position, the outer end 395 of the driving piece 393 is substantially parallel to and abuts on one side to the locking wall portion 313, the engagement end 411 of each locking piece 399 is aligned with the engagement groove 275 of the first pivot portion 271 (as shown in fig. 15), so that the key 437 can be removed and the door 11 can be locked by the lock device 371 so as not to be opened from the outside.

After the key 437 is used to operate the first and

second latches

415, 419 to the latching position, the inner handle 433 is pivoted to the horizontal position, and it should be noted that the key 437 can be used from the outside or the inner handle 433 can be used from the inside (directly moving the inner handle 433 from the horizontal position to the vertical position) to operate the first and

second latches

415, 419 to the unlatching position, and the second gear 331 links the first and

second links

335, 353 to displace the first and

second latches

415, 419 to the unlatching position. Further, the first gear 293 is also returned to a position where the upper lock wall portion 311 is substantially parallel to and abuts the catch 393 (as shown in fig. 7).

When the first and second latches 415, 419 are in the latched position, the first and second latches 415, 419 can be displaced from the outer side of the door 11 to the unlatched position by operating the key 437, and in detail, referring to fig. 15, when the first and second latches 415, 419 are in the latched position and the lock device 371 is in the unlatched state, the lock device 371 is pivoted toward the unlatching wall portion 313 by the key 437 so that the outer end 395 of the driving piece 393 is pressed against the unlatching wall portion 313 of the first gear 293, and the first and second engaging pieces 335, 353 are displaced toward each other in parallel in association with the first gear 293, as shown in fig. 16, so that when the lock device 371 is pivoted, the outer end 395 of the driving piece 393 is pressed against the unlatching wall portion 313 to pivot the first gear 293, and further the first and second engaging pieces 335, 353 are displaced toward each other in parallel, and thus the first and second latches 415, 419 are displaced from the latched position to the unlatched position in parallel with the first and second engaging pieces 415, 419, 419 to the unlatched position, the key 437 can be removed from the lock device 371 by reversing the lock device 371 to the aligned position (as shown in fig. 12 and 13).

The door lock 250 of the present invention provides the lock device 371 to operate the first and

second latches

415 and 419 to be displaced to the latched position or the unlatched position, so that the door 11 (in the form of a folding door) has a function of locking or unlocking from the outside, providing an anti-theft effect.

Further, the door lock 250 of the present invention can selectively operate the inner handle 433 or the lock 371 to operate the first and

second latches

415, 419 to displace to the latched position or to the unlatched position, and even if the lock 371 is used to operate the first and

second latches

415, 419 to displace to the latched position, the inner handle 433 can be used to operate the first and

second latches

415, 419 to displace to the unlatched position.

While the basic teachings of the present invention have been described, numerous extensions and variations will be apparent to those of ordinary skill in the art. For example, the fitting groove 275 may be formed by being recessed from the inner edge of the first shaft hole 273 and not extend through the outer edge of the first pivot portion 271. Further, the door lock 250 may not include the second coupling 353, the second link 431, the second latch 419, and the lower latch hole 198B. Further, the first coupling member 335 may include only one first rail 351, the second coupling member 353 may include only one second rail 357, and the assembly seat 251 may include only one first projection 257 and one second projection 259.

Although the door lock 250 of the present invention is described with reference to the embodiment installed in the folding door, the door lock 250 may be used in a general door or a split door.

As the present invention disclosed in the specification may be embodied in other specific forms without departing from the spirit or general characteristics thereof, and it is noted that some of these specific forms have been set forth, the embodiments disclosed in the specification should be considered as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Claims

1. A door lock, comprising:

an assembly seat (251) including a first pivot portion (271);

a first gear (293) pivotally connected to the first pivot portion (271), the first gear (293) including an upper locking wall portion (311) and an unlocking wall portion (313) spaced apart from each other in a circumferential direction around an axis of the first pivot portion (271);

a lock device (371) coupled to the first gear (293), the lock device (371) pivoting with the first gear (293), the lock device (371) further pivoting with the first pivot portion (271), the lock device (371) being switchable between a locked state engaged with the first pivot portion (271) and an unlocked state separated from the first pivot portion (271), the lock device (371) being unable to pivot when in the locked state and being pivotable when in the unlocked state;

a catch (393) movably received in the lock device (371), the catch (393) including an outer end (395), the outer end (395) of the catch (393) being located inside the lock device (371) when the lock device (371) is operated in the locked state, the outer end (395) of the catch (393) being located outside the lock device (371) and being interposed between the locked wall portion (311) and the unlocked wall portion (313) in a circumferential direction around an axis of the first pivot portion (271);

a first coupling member (335) movably coupled to the assembly seat (251), the first coupling member (335) including a first rack gear (339) engaged with the first gear (293);

a first latch (415) coupled to the first engagement member (335), the first latch (415) moving with the first engagement member (335), and the first latch (415) being displaceable between an unlatched position and an unlatched position;

when the lock device (371) is operated to be in an unlocking state and the lock device is pivoted to the outer end (395) of the driving piece (393) by the axis of the first pivot part (271) to press the upper locking wall part (311) of the first gear (293), the first connecting piece (335) is linked with the first bolt (415) to displace from the latching position to the unlatching position, and

when the outer end (395) of the driving piece (393) is pressed against the unlocking wall part (313) of the first gear (293), the first connecting piece (335) is linked with the first bolt (415) to be displaced from the unlocking position to the unlocking position.

2. The door lock of claim 1, further comprising:

a plurality of locking tabs (399) removably received in the locking device (371), each locking tab (399) including a mating end (411);

when the lock device (371) is operated to be locked, the jogged end (411) of each locking sheet (399) is jogged with the jogged groove (275) of the first pivot part (271), and

when the lock device (371) is operated to be in an unlocked state, the embedding end (411) of each locking piece (399) is separated from the embedding groove (275) of the first pivot part (271).

3. The door lock of claim 2, further comprising:

a key (437) removably engageable with the lock device (371);

the lock device (371) is operated in an unlocked state when the key (437) is coupled with the key hole (377), and

the lock device (371) is operated in a locked state when the key (437) is separated from the key hole (377).

4. A door lock according to claim 3, wherein the upper locking wall portion (311) is spaced from the unlocking wall portion (313) by a distance greater than the outer end (395) of the catch piece (393) in a circumferential direction about the axis of the first pivot portion (271), the lock means (371) being permitted to pivot to an aligned position or a non-aligned position when in the unlocked condition;

when the lock device (371) is in an unlocked state and is located at the non-aligned position and the first latch (415) is located at the latched position, the lock device (371) does not drive the first gear (293) to pivot when pivoting from the non-aligned position to the aligned position, and the first latch (415) is kept at the latched position,

when the lock device (371) is in an unlocked state and is located at the non-aligned position and the first latch (415) is located at the unlatching position, the lock device (371) pivots from the non-aligned position to the aligned position without linking the first gear (293) to pivot, the first latch (415) is kept at the unlatching position,

when the lock device (371) is in the unlocked state and is located at the aligned position, the engagement end (411) of each locking piece (399) is aligned with the engagement groove (275) of the assembly seat (251), allowing the separation key (437) and the lock device (371), an

When the lock device (371) is in the unlocked state and is located at the non-aligned position, the engaging end (411) of each locking piece (399) is not aligned with the engaging groove (275) of the assembling seat (251), and the key (437) and the lock device (371) are not allowed to be separated.

5. The door lock of claim 1 or 2, further comprising:

a second gear (331), said assembly seat (251) further comprising an inner surface (253) and an outer surface (255), said first pivot portion (271) being disposed on the inner surface (253), the assembly seat (251) further comprising a second pivot portion (279) spaced apart from the first pivot portion (271) and disposed on the inner surface (253), said second gear (331) being pivotally connected to the second pivot portion (279) and being engaged with the first rack (339) of the first engagement member (335), the second gear (331) being disengaged from the first gear (293); and

an inner handle (433) is combined with the second gear (331), the inner handle (433) and the second gear (331) pivot together, the inner handle (433) is arranged on the outer surface (255) of the assembly seat (251), and the lock device (371) is arranged on the inner surface (253) of the assembly seat (251), no matter the lock device (371) is operated to be in an up-locking state or an unlocking state, when the inner handle (433) pivots and is linked with the second gear (331) to pivot, the first linking piece (335) displaces to cause the first bolt (415) to displace to one position of an up-locking position or an unlocking position, further the lock device (371) does not pivot, and the first gear (293) is linked with the first rack (339) to pivot.

6. The door lock of claim 1, further comprising:

a second coupling member (353) movably coupled to the assembly base (251), the second coupling member (353) including a second rack gear (357), the first and second rack gears (339, 357) being engaged with the first gear (293) and located on both sides of the first gear (293), respectively, the first and second coupling members (335) being driven by the first gear (293) to be displaced in parallel but in opposite directions when the first gear (293) is pivoted; and

a second latch (419) coupled to the second link (353), the second latch (419) being movable with the second link (353), the second latch (419) being displaceable between a latched position or an unlatched position, the second latch (419) being in the latched position when the first latch (415) is in the latched position and the second latch (419) being in the unlatched position when the first latch (415) is in the unlatched position.

7. The door lock of claim 1, wherein said first gear (293) further comprises a first end surface (295) and a second end surface (297) spaced from said first end surface (295), said first gear (293) further comprises a first movable groove (299) formed in said first end surface (295), said first movable groove (299) comprises said upper locking wall portion (311) and said unlocking wall portion (313), said first gear (293) further comprises a stopper (277) formed in an outer peripheral surface thereof, said stopper (277) is located in said second movable groove (319), and an outer end (395) of said driving plate (393) is located in said first movable groove (299) when said lock device (371) is in the unlocked state.

8. The door lock of claim 1, wherein the assembly seat (251) further comprises a first projection (257), the first coupling member (335) further comprises a first track (351), and the first projection (257) is slidably coupled to the first track (351) of the first coupling member (335).

9. A door lock, comprising:

an assembly seat (251) comprising a first pivot portion (271) and a second pivot portion (279);

a first gear (293) pivotally connected to the first pivot portion (271);

a second gear (331) pivotally connected to the second pivot portion (279);

a lock device (371), which is combined with the first gear (293), the lock device (371) can be operated to be in a locking state or an unlocking state, the lock device (371) cannot be linked with the first gear (293) to pivot in the locking state, and the lock device (371) is linked with the first gear (293) to pivot together in the unlocking state;

an inner handle (433) coupled with the second gear (331), the inner handle (433) pivoting with the second gear (331);

a first coupling member (335) movably coupled to the assembly base (251), the first coupling member (335) including a first rack (339) engaged with the first and second gears (293, 331); and

a first latch (415) coupled to the first coupling member (335), the first latch (415) moving with the first coupling member (335);

when the operating lock device (371) is pivoted, the first gear (293) pushes the first connecting piece (335), and the first bolt (415) is displaced between a latching position and a unlatching position; and

when the inner handle (433) is pivoted, the second gear (331) pushes the first coupling member (335), and the first latch (415) is displaced between the latched position and the unlatched position.

10. The door lock of claim 9, further comprising:

a second coupling member (353) movably coupled to the assembly base (251), the second coupling member (353) including a second rack (357) engaged with the first and second gears (293, 331), the first and second racks (339, 357) of the first and second gears (293, 331) being located between the first and second gears (293, 331), the first and second coupling members (335, 353) being pushed by one of the first and second gears (293, 331) to be displaced in parallel but in opposite directions when one of the first and second gears (293, 331) is pivoted; and

a second latch (419) coupled to the second link (353), the second latch (419) being movable with the second link (353), the second latch (419) being displaceable between a latched position and an unlatched position, the second latch (419) being in the latched position when the first latch (415) is in the latched position, and the second latch (419) being in the unlatched position when the first latch (415) is in the unlatched position.