CN109306826B

CN109306826B - Door lock mortise lock for preventing door bolt from locking

Info

Publication number: CN109306826B
Application number: CN201810515352.9A
Authority: CN
Inventors: 赵阳日
Original assignee: Inno Instrument Inc
Current assignee: Inno Instrument Inc
Priority date: 2017-12-20
Filing date: 2018-05-25
Publication date: 2020-06-23
Anticipated expiration: 2038-05-25
Also published as: CN109306826A; KR101891785B1

Abstract

The invention relates to a door lock mortise lock capable of preventing a door bolt from being locked, which is composed of a mortise lock main part, a door bolt, a sub-lock and a lock tongue and realizes the locking and unlocking of a door. After the door bolt completes the unlocking action, the locker is unlocked for a certain time difference, so that the locking phenomenon of the door bolt is prevented.

Description

Door lock mortise lock for preventing door bolt from locking

Technical Field

The invention relates to a door lock mortise lock capable of preventing a door bolt from being locked, which is composed of a mortise lock main part, a door bolt, a sub-lock and a lock tongue and realizes the locking and unlocking of a door. After the door bolt completes the unlocking action, the locker is unlocked for a certain time difference, so that the phenomenon of dead locking of the door bolt is prevented, when a user opens the door through the escape function indoors, the bolt can be unlocked after the unlocking of the door bolt is finished, and therefore the phenomenon of dead locking cannot occur, and the door bolt is convenient to use.

Background

Generally, a door lock is widely used in general homes or public buildings. For example, a door lock is used for an entrance/exit of a hallway, a vault of a bank, and an entrance/exit control device in a specific area.

Particularly, through methods such as password input or fingerprint identification, after user authentication, a motor or an electromagnetic valve is started, a door catch moves linearly, and locking and unlocking of a door are achieved.

This prior art has korean registered utility model No. 20-0428164 door lock mortise lock with built-in driving motor, which is provided with a driving motor and gears and other mechanical parts driven by the driving motor at the inner side of the mortise lock master, so that the bolt at the inner side of the mortise lock automatically operates by the driving motor, thus, the existing mechanical back-and-forth movement of the door opened by the key can be accomplished, and at the same time, the electric control is realized by the motor, and the bolt is used as a mechanical door lock device and an electronic (intelligent) door lock or simply adjusted to be used as an electronic (intelligent) door lock.

In addition, there is also korean registration implementing a new type of door lock mortise lock No. 20-0378846, which includes: a housing built in the door; and a keeper assembly that moves between an unlocked position and a locked position of the housing, projects from the housing, and is disposed on the door frame at the locked position; and a first spring elastically supporting the door frame assembly in a direction of the locking position; and a handle shaft rotating between a first position in the positive direction of the middle position of the housing and a second position in the reverse direction of the middle position, pressurizing the bolt assembly from the locking position to the unlocking position by rotating to the first position in the middle position, and having a pressurizing rod; and a locking lever which can perform a rotational movement between a locking position and an unlocking position of the housing, locks the keeper assembly at the unlocking position at the locking position, and unlocks the keeper assembly at the unlocking position; and a second spring for elastically pressing the locking lever toward the locking position; and an automatic locker for allowing the movement of the door bolt assembly from the unlock position to the lock position and automatically locking the door after the door is closed; and a manual locker for allowing the movement of the door bolt assembly from the unlock position to the lock position and manually locking the door when the handle shaft is rotated from the intermediate position to the second position.

In addition, there are other prior arts which have registered in korea to realize a new type of bolt swing type door lock mortise lock of No. 20-0483631, including: the spring bolt is used for protruding or springing in the housing to lock or unlock the door; the spring is connected to the outer edge, the tail end of the spring is hinged, the lock tongue rotates on one side of the lock tongue, and the lock is bounced into the lock tongue shaft in the housing; a handle block which can make the lock tongue spring into the inner state of the housing for fixing; the flat plate prevents the lock tongue from bouncing in through external force; a flat clamping table b is arranged on one side of the handle block, and the flat plate is rotated, so that the handle b fixed by the lock tongue is released; and a flat plate clamping table c is arranged on one side, and the flat plate is rotated, so that the handle c fixed by the lock tongue is released.

There is a need for an escape function that allows trapped persons to easily escape indoors in an emergency, thereby minimizing personal accidents. That is, when a fire or earthquake occurs indoors, a person indoors is in a panic state, and at this time, a simple and convenient action, that is, a function of unlocking and escaping by rotating a handle in a room, is required.

There is a korean registration for realization of a novel escape structure of a door lock latch having a plurality of door latches, No. 20-0484884, which is a prior art escape structure, including: a mortise lock master; the mortise lock main part moves in the horizontal direction and at least one door bolt and an internal locking bolt in a locking state and an unlocking state are realized; an operation lever for moving the door bolt in a horizontal direction; and one end of the operating rod is linked, and the lever of the internal locking bolt is moved in the horizontal direction.

This prior art only maintains the locked state of the door by means of the keeper or latch, and particularly, the latch is freely rotated and bounced inward when the door is opened or closed, and the door can be opened as long as the keeper bounces inward, which may reduce safety.

Therefore, when the latch bolt is unlocked before the latch bolt is completely unlocked, a latch bolt deadlocking phenomenon occurs according to an external force or friction, and thus, durability or malfunction occurs.

Disclosure of Invention

Problems to be solved

In order to solve the above-mentioned object, the present invention provides a door lock mortise lock for preventing a door bolt from being deadlocked, which is characterized by comprising a mortise lock main part, a door bolt, a sub-lock, a bolt and a locker, wherein the locker starts to operate to prohibit the bolt from being bounced when the sub-lock bounces into the mortise lock main part in a door locking state, and the bolt is prohibited from being bounced before the bolt is unlocked if a separator is used for unlocking, and the bolt is unlocked with a certain time difference.

Therefore, the door lock mortise lock provided by the invention has the advantages that when a user opens the door through the escape function indoors, the bolt can be unlocked only after the door bolt is unlocked, so that the phenomenon of locking cannot occur, and the door lock mortise lock is convenient to use.

In addition, the invention provides the door lock mortise lock for preventing the dead locking of the door bolt, and in order to prevent the dead locking phenomenon caused by friction and external force generated in the unlocking process of the door bolt, the sub-lock and the lock tongue are stably unlocked through the action of the separator, so that the escape function is conveniently realized.

Means for solving the problems

In order to achieve the above object, the present invention provides a door latch for preventing a locking tongue from being randomly sprung into the door latch, comprising:

a mortise lock master; the door bolt moves on the mortise lock main part in the horizontal direction and completes locking and unlocking actions; the bolt is arranged below the bolt and can extend and retract towards the outside of the mortise lock main part; a separator having a handle shaft inside the door, which rotates to drive the movement of the door bolt; the locker moves up and down in the mortise lock main part to prevent the lock tongue from entering the mortise lock main part; a lock releaser which ascends the locker to allow the latch to be sprung by the rotation of the separator; the separator unlocks the door bolt, and after the separator starts to work, the locking releaser starts to work, and the lock tongue can be bounced into the mortise lock main part.

Further, the lock remover includes:

the lifting guide piece is provided with a first linkage piece of a first clamping piece, a second linkage piece of a second clamping piece, a lifting guide piece extending to the front end of the first linkage piece and arranged on the locker and inserted into the through hole of the locker body.

The clamping rod of the bolt rotating body arranged on the separator is positioned between the first clamping piece and the second clamping piece, when the separator rotates and pushes the first clamping piece or the second clamping piece, the first linkage piece rotates, and meanwhile, the lifting guide piece lifts the locking body.

Furthermore, a blocking rod of the separator is provided with a spacing area, when the separator rotates, the end part of the first clamping piece or the second clamping piece is inserted into the spacing area, and the blocking rod pushes the middle area of the first clamping piece or the second clamping piece, so that the locking body is lifted after the door bolt is unlocked.

Further, the door lock mortise lock further includes: and the second elastic piece enables the first linkage piece and the second linkage piece to return to the original position through elastic force.

Compared with the prior art, the beneficial effect that this reaches is:

the invention relates to a door lock mortise lock capable of preventing a lock tongue from randomly bouncing in, which is characterized by comprising the following components:

the mortise lock comprises a mortise lock main part, a door bolt, a sub-lock and a bolt which are popped out from the mortise lock main part for locking and unlocking states, and an operator and a separator which drive the devices. The unlocking of the door bolt can be realized through the escape function regardless of the rotation direction of the separator,

particularly, when the escape function is started, the bolt is unlocked, and then the lock tongue is bounced into the mortise lock main part, so that the deadlocking phenomenon of the bolt can be prevented, the durability is improved, and the door can be opened stably.

Namely, when the user opens the door through the escape function indoors, the unlocking of the bolt can be realized after the unlocking of the bolt is finished, so that the phenomenon of locking cannot occur, and the use is convenient.

In addition, the locking remover is composed of a first linkage member and a second linkage member, so that the rotation of the separator in two directions can be coped with, and a time difference is established according to a space area on the separator, so that the bolt can be removed through a more stable time difference.

Drawings

FIG. 1 is a perspective view of the door latch of the present invention shown in FIG. 1;

FIG. 2 is an enlarged view of the sub-lock and bolt of the door lock mortise lock of the present invention;

FIGS. 3 and 4 are views illustrating the operation of the sub-lock and the locking tongue of the mortise lock for door lock according to the present invention;

FIG. 5 is an enlarged view of a lock remover of the door lock latch of the present invention;

fig. 6a to 6c are operation views of the mortise lock of the door lock according to the present invention.

Reference numerals in the figures

M: a door lock mortise lock; 10: a mortise lock master; 20: a door bolt; 30: a sub-lock; 40: a latch bolt; 50: an operator;

70: a locker; 60: a separator; 80: the contactor is locked.

Detailed Description

The present invention will be further described below based on preferred embodiments with reference to the accompanying drawings.

The present invention will be described in detail below with reference to the accompanying drawings.

The present invention may be modified in various ways and may have various forms. However, the present invention is not limited to the embodiments, and all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

The same reference symbols on the drawings, in particular, the same symbols as the tens and the ones or the tens, the ones and the english letters denote the same or similar components, and if not otherwise specified, the symbols indicated on the drawings may be regarded as components specified according to the above requirements.

In addition, the various components on the drawings are enlarged (thick) or reduced (thin) for convenience of understanding, but this is not intended to limit the scope of the present invention.

The terminology used in the description is for the purpose of describing the embodiments of the invention and is not intended to be limiting of the invention. Singular references also include plural references and vice versa. The terms "comprises" or "comprising," and the like, in the present specification are used for reminding the existence of the features, numbers, stages, actions, components, parts, or combinations thereof, but do not exclude the existence or other possibility of one or more other features, numbers, stages, actions, components, parts, or combinations thereof in advance.

Unless defined otherwise, all terms used in the specification, including technical and scientific terms, are intended to be interpreted as commonly understood by one of ordinary skill in the art to which this invention belongs. We often use certain words defined in dictionaries, which are the same as the definitions explained in the related art, and do not interpret the meanings in idealized or transition forms if they are not explicitly defined in the present invention.

For convenience of explanation, the mortise lock of the present invention is defined with reference to fig. 1, which specifies approximate vertical and horizontal direction criteria, with the direction in which the keeper (20) is ejected as a front face, and the direction in which gravity acts as a lower face, and the direction is determined in accordance with this method both when detailed descriptions of inventions relating to other drawings and claims are not particularly required.

Fig. 1 is an overall structural view of a mortise lock for a door lock according to the present invention, fig. 2 to 4 are structural views of a sub-lock and a tongue, and fig. 5 is an enlarged view of each structure.

Fig. 6a shows a state where the door is opened, fig. 6b shows a state where the door bolt is unlocked by rotating the separator, that is, a state where the door bolt is unlocked for locking the door, and fig. 6c shows a state where the door is locked, and the structure will be described in detail with reference to various drawings.

The invention provides a door lock latch (M) comprising: the mortise lock comprises a mortise lock main part (10), a door bolt (20), a sub-lock (30), a lock tongue (40), an operating part (50) and a locker (70).

The mortise lock is structurally characterized in that the mortise lock main part (10) is arranged in a door, and a side wall end (11) extending outwards from the door end is provided with a first telescopic hole (113) to a third telescopic hole (113) for respectively extending and retracting a clamping end (21) of a door bolt (20), a first head part (31) of a sub-lock (30) and a second head part (41) of a bolt (40).

The number of the telescopic holes is not limited, but in order to strengthen the locking function of the door bolt (20), the door bolt (20) of the invention is provided with 3 clamping ends (21), similarly, the upper part and the lower part are provided with 3 first telescopic holes (111), and the sub-lock (30) is only provided with one bolt (40), a second telescopic hole (112) and a third telescopic hole (113).

Therefore, the door lock of the door frame has a locking hole for inserting the locking end (21) of the bolt (20) and the second head (41) of the bolt (40) relative to the side wall end (11), the part corresponding to the first head (31) of the sub-lock (30) is a plane shape without holes, and the first head (31) of the sub-lock (30) is bounced into the mortise lock main part (10) in the door locking state.

In addition, the mortise lock main part (10) is internally provided with a guide shaft (13) for guiding the bolt (20) to move back and forth and a plurality of independent fixing shafts for rotating or fixing each structural part, which are already disclosed and are not explained herein.

The door bolt (20) is used for locking and unlocking the door, more than 2 clamping ends (21) which are connected with a certain distance from top to bottom are arranged at the front end (3 clamping ends (21) are listed in the invention), and the middle end or the rear end or the two ends are provided with sliding holes (23) connected with the guide shafts (13). (the structure of the invention is two guide shafts (13) and a sliding hole (23) which can stably perform linear motion)

The door bolt (20) moves back and forth on the mortise lock main part (10) through the operation of a manual (a user can directly operate through an indoor handle with an escape function or an outdoor manual key and the like) or a motor (512) (the operation is performed after a door opening button is pressed indoors or a password is input outdoors or a safety card, a fingerprint and the like are used for unlocking), and the card end (21) pops in and out on the first telescopic hole (111) and pops in and out of the mortise lock main part (10).

Then, the sub-lock (30) and the latch tongue (40) contact the door lock catch of the door frame when the door is opened and closed, and pop-in and pop-out from the mortise lock main member (10), and at the same time, the heads of the sub-lock (30) and the latch tongue (40) extend and retract to the outside of the mortise lock main member (10).

Specifically, first, the sub-lock (30) includes: a first head (31) which can be extended and retracted to the outside of the mortise lock main part (10) through the second extension and retraction hole (112); a first body (33) connected to the first head (31), elastically supported in the pop-up direction, and moved forward and backward inside the mortise lock main member (10); and a first hinge pin (35) which is hinged to the first head (31) and the first body (33) and which allows the first head (31) to swing left and right.

The rear end of the first body (33) of the sub-lock (30) is provided with a first elastic body (37), the end part of the first elastic body (37) is provided with a first bracket (371), and the sub-lock (30) is subjected to forward elastic force through the elasticity of the first elastic body (37).

In addition, the sub-lock (30) contacts a door lock catch to realize the left-right direction conversion of the first head (31) and complete the action of popping in and out.

Therefore, the first head part (31) is composed of a first inclined surface (311) and a second inclined surface (312) which are symmetrical to each other, the first inclined surface (311) and the second inclined surface (312) extend out of the mortise lock main part (10), the front side surface and the rear side surface incline downwards towards the front side, when the door is opened and closed, the first head part (31) swings left and right by taking the first hinge pin (35) as the center according to the direction of contacting the door lock catch, and the direction switching of the first inclined surface (311) and the second inclined surface (312) is realized.

Therefore, a semicircular first supporting block (314) which protrudes along the outer edge of the rear side of the first hinge pin (35) is arranged on the upper surface or the lower surface of the first head part (31) or the upper and lower surfaces of the first head part and the first head part, so that the first head part (31) contacts the side wall end (11) of the mortise lock main part (10) when being ejected, and the tail end of the first supporting block (314) on the side surface of the mortise lock main part (10) is used as a supporting point when the first head part (31) is ejected, so that the left and right swinging of the first head part (31) is realized.

That is, first, if the first head 31 contacts the door latch after the door is opened in a closed state or closed in an opened state, the first head 31 swings in a direction opposite to the contact, and the first head 31 is pushed into the latch main member 10 by the inclination of each inclined member contacting the door frame, and the sub-lock 30 is pushed in.

At this time, at one of both side ends of the first supporting block (314) contacting the side wall end (11) (the end placed in the swing direction of the first head (31)), a lever-like supporting point is generated, and at the same time, an impact applied to the first head (31) by the first supporting block (314) is dispersed or resisted, and the inside of the mortise lock main part (10) is sprung at a speed faster than that of the sub-lock (30), thereby preventing breakage of the fitting or the like by the impact.

Furthermore, when the first head part (31) is ejected, the end of the first support block (314) contacts the side wall end (11) of the mortise lock (10) to return the first head part (31) to the position before swinging.

That is, in a state that the door is completely separated from the door frame and opened, the first head 31 generates an external force, at this time, the sub-lock 30 moves forward and is ejected by the first elastic body 37, at this time, the first head 31 is ejected in a state of swinging in either left or right direction, and therefore, at the time of ejection, one of both side ends of the first supporting block 314 contacts the side wall end 11 to generate a supporting point similar to a lever, and then, with the supporting point as a rotation axis, the first head 31 returns to a home position before swinging, that is, a neutral position before left or right swinging, to realize the ejection of the sub-lock 30, so that not only the ejection distance of the first head 31 is limited, but also, at this state, when the door is closed, the second head 41 of the latch 40 contacts the door striker earlier than the first head 31, the bolt (30) is allowed to spring in earlier than the sub-lock (40).

The latch tongue (40) is extendable and retractable outside the mortise lock main unit (10), and includes a second head (41) elastically supported in an ejecting direction.

Specifically, the latch bolt (40) comprises a second head part (41) which can be extended and contracted towards the third telescopic hole (113), a second machine body (43) which is connected with the second head part (41), elastically supported towards the ejecting direction and moves back and forth in the mortise lock main part (10), and a second hinge pin (45) which is hinged with the second head part (41) and the second machine body (43) and enables the second head part (41) to swing left and right; a separate locker (70) is provided at the rear of the second body (43), as will be described in detail below.

The latch tongue (40) is elastically pressed in the ejecting direction by a second elastic body (47) in the mortise lock main body (10), and as with the sub-lock (30), the left-right direction switching of the second head (41) is completed by the contact of the door lock catch, and the latch tongue is ejected.

Thus, the shape of the second head part (41) of the latch bolt (40) can be the same as the first head part (31) of the sub-lock (30), but in order to prevent the shaking when the door is closed, the second head part can be arranged up and down in front of the second body (43) in a supported state, and the inclined planes which are oppositely arranged with the second hinge pin (45) as the center are composed of a pair of split parts which are formed by crossing left and right, when the door is opened and closed, one of the split parts swings, and simultaneously, the second head part (41) is ejected and pushed forward and backward.

That is, the back surfaces of a pair of divided bodies constituting the second head part (41) are supported by the second body (43), and the outer side surfaces are arranged in parallel in the left-right direction in a state of sharing the second hinge pin (45), and the inner side surfaces are formed in a cross shape of an 'X', so that the divided bodies cannot swing left and right as long as the latch bolt (40) is not sprung, and thus the door cannot be opened, only when the latch bolt (40) is sprung, one of the divided bodies swings, and at the same time, the second head part (41) can be sprung, that is, the latch bolt (40) moves backward by the pressure of the spring.

For example, when the door is opened, if the outer side surface of the first split body (411) contacts the door lock catch, the second body (43) is pushed backwards, and simultaneously, the first split body (411) and the second split body (412) swing at the same angle, so that the outer side surface and the inner side surface of the first split body (411) and the second split body (412) both contact the door lock catch, and thus, the second head (41) is squeezed into the insertion lock main part (10), and the lock tongue (40) is popped into the insertion lock main part.

Thus, each body of the second head (41) comprises: and a second support block (414) which protrudes along the rear outer edge of the second hinge pin (45) on the upper and lower surfaces of the respective divided bodies, and contacts the side wall end (11) of the mortise lock main member (10) when the second head portion (41) is ejected.

When the first head part (31) is bounced in, the swinging split body swings by taking the tail end of the second supporting block (414) of the side wall end (11) of the mortise lock main part (10) as a supporting point, when the second head part (41) is bounced out, the tail end of the second supporting block (414) of the swinging split body contacts with the side wall end (11) of the mortise lock main part (10), and meanwhile, the corresponding split body is restored to the original position before swinging.

That is, the structure of the second support block (414) corresponding to the first support block (314) of the sub-lock (30) is the same as the first support block (314) in function, but the first head (31) of the sub-lock (30) returns to the neutral position through the first support block (314) when ejected, and the second head (41) of the latch tongue (40) returns to the crossing position through the second support block (414) when ejected, which is different from the above.

At this time, both ends of the first support block (314) are in contact with the side wall ends (11) with respect to the neutral position of the first head part (31), and on the contrary, both ends of the second support block (414) are in contact with the side wall ends (11) with respect to the swing position at which the respective divided bodies intersect.

Therefore, for the swinging reset and stable support of each split body, the two ends of the second supporting block (414) are provided with supporting tables (415) which are the same as the plane of the side wall end (11) and are connected in a bending way towards the outer side, and the supporting tables (415) are also suitable for the first supporting block (314).

Next, an operator (50) for ejecting the door bolt (20) will be described.

The operator (50) comprises an operating part (51) driving the bolt (20), and the operating part (51) rotates clockwise with reference to fig. 1, so that the bolt (20) can be ejected into the side wall end (11).

Namely, the pushing piece (25) at the rear side of the bolt (20) can be pressed at one side of the operating piece (51), when the operating piece (51) rotates clockwise, the operating piece (51) pushes the pushing piece (25), the pushing piece (25) moves backwards, and the bolt is bounced.

At this time, the operating member (51) is movable according to the rotation of the separator (60) described later (when the escape function is used), but this is limited to the escape function, and therefore, the drive motor (512) can be unlocked only by a manual key or fingerprint recognition, password input, or the like, in the outside in a normal case.

Therefore, the operating member (51) is provided with a handle connecting hole (511) which can be connected with a manual key or a handle, the handle connecting hole is arranged for manually rotating the operating member (51), when the operating member is unlocked externally, a motor (512) which is driven after being identified and a first gear (514) arranged on the motor (512) are meshed with the first gear (514), and a second gear (515) connected with the operating member (51) drives the operating member (51) to rotate.

For this, the operating member (51) is provided with a latch (517), the second gear (515) is provided with a driving hole (515 a) inserted into the latch (517), and when the second gear (515) rotates, the end of the driving hole (515 a) pushes the latch (517) to rotate.

Therefore, in order to provide a restoring force to the bolt (20) which springs into the mortise lock main member (10), the bolt (20) is further provided with a torsion spring (15), and the rotational operation member (51) is also returned to the home position in response to the return of the bolt (20) to the home position.

The escape function of the core indoor handle of the invention is explained in detail below.

Firstly, the escape function refers to a function that a user can easily open a door by linking and popping in a bolt (20) and a bolt (40) when an indoor handle is rotated in an emergency, and is characterized in that the escape function can be easily realized by opening the door no matter how the indoor handle is rotated.

Therefore, the invention also comprises a separator (60), wherein the separator (60) comprises a handle shaft (61), and an escape rotating body (63) and a bolt rotating body (65) which are arranged on the handle shaft (61).

First, the separator (60) is connected to an inner handle, includes an escape rotating body (63) and a latch rotating body (65), and can be inserted into the separator (60).

The escape rotating body (63) is provided with a pressurizing block (631) protruding towards one side, and when the separator (60) rotates, the pressurizing block (631) also rotates together to drive the operating part (51) to rotate.

In more detail, in order to drive the operating member (51) by the rotation of the separator (60), the operating member (50) is further provided with a first linkage gear (53) and a second linkage gear (54).

The first linkage gear (53) and the second linkage gear (54) are arranged above the separator (60) and can be driven in a meshing mode, a first handle (531) and a second handle (541) are respectively arranged below the first linkage gear (53) and the second linkage gear (54), and the second pressurizing block (631) pushes the first handle (531) or the second handle.

Namely, a pressurizing block (631) is arranged between the first handle (531) and the second handle (541).

Therefore, the end part of the first linkage gear (53) is provided with a protrusion rod (533) for rotating the operating piece (51), when the first linkage gear (53) rotates clockwise, the protrusion rod (533) pushes the lower left part of the operating piece (51) to rotate the operating piece (51) clockwise, and the door bolt is popped in.

That is, if the bolt (20) is to be inserted, the first interlocking gear (53) must be rotated in the clockwise direction, and after the first interlocking gear (53) and the second interlocking gear (54) are engaged, the first interlocking gear (53) is always rotated in the clockwise direction regardless of the rotation of the separator (60).

In more detail, if the separator (60) rotates counterclockwise, the pressurizing block (631) pushes the first handle (531) clockwise, whereby the first interlocking gear (53) rotates clockwise,

when the separator (60) is pushed in the clockwise direction, the pressurizing block (631) rotates the second handle (541) in the counterclockwise direction, and at this time, the first link gear (53) engaged with the second link gear (54) naturally rotates in the clockwise direction according to the engagement structure.

Further, preferably, a first elastic member (56) is connected to the first interlocking gear (53) and the second interlocking gear (54) in order to provide the first interlocking gear (53) and the second interlocking gear (54) with restoring force.

Therefore, when the user needs to open the door, the user can open the door by rotating the separator (60), thereby improving the use convenience.

Therefore, the invention is characterized in that the door lock also comprises a locker (70) for preventing the spring-in of the bolt (40) when the sub-lock (30) is spring-in when the door is locked.

In more detail, the locker (70) can link a first body (33) of the sub-lock (30) and a second body (43) of the locking bolt (40), and comprises a locking body (71), wherein the locking body (71) comprises a through hole (711) through which the first body (33) penetrates and a spring inlet (713) which springs into the second body (43).

More specifically, the first body (33) has a tilt member (331) that descends forward, and a through hole (711) that penetrates the tilt member (331) is provided in the lock body (71).

In summary, when the sub-lock (30) is bounced, the first body (33) moves backward, and at this time, the first body (33) may pass through a through hole (711) provided in the locking body (71).

Therefore, the spring-in of the bolt (40) is limited along with the descending of the locking body (71), for this reason, preferably, a third elastic body (73) is arranged above the locking body (71), and the locking body (71) can move downwards through elasticity.

When the door is closed, the sub-lock (30) is inserted into the mortise lock main part (10), the inclined part (331) is located behind the through hole (711), the locking body (71) descends to limit the insertion of the bolt (40),

when the door is opened, the sub-lock (30) moves forward, and at this time, the inclined member (331) of the first body (33) moves to the front end of the through hole (711), and the upper surface of the through hole (711) rises along the inclined member (331), thereby generally having an effect of lifting the locking body (71). That is, the ascending locking body (71) eliminates a device for restricting the spring-in of the lock tongue (40), and the lock tongue (40) can be spring-in into the mortise lock main part (10).

Therefore, for the device for preventing the lock body (71) from bouncing in the lock tongue (40), firstly, a bouncing inlet (713) which can bounce into the second body (43) of the lock tongue is arranged below the lock body (71).

At this time, the second body (43) is provided with a locking step (431), when the locking body (71) descends, the upper end of the bullet inlet (713) is attached to the upper surface of the second body (43), and at this time, the locking step (413) is clamped on the bullet inlet (713) to prevent the bullet from entering, so that the spring bolt is prevented from entering.

On the contrary, when the locking body (71) ascends, the upper surface of the spring inlet (713) is far away from the second body (43), and according to the distance, the locking step (413) can be ensured to enter the space of the spring inlet (713), and a structure for allowing the bolt (40) to spring in is formed.

Therefore, when the bolt (40) is bounced in before the backward movement (unlocking) of the bolt (20) is completed, and the door is opened unreasonably, the problem that the bolt is locked seriously can occur.

Therefore, before the backward movement of the bolt (20) is completed, in order to prevent the spring bolt (40) from springing in, a time difference is set, and through the time difference, the rising time of the locking body (71) can be slower than the spring bolt (20), and the invention can solve the problems through the locking remover (80).

First, in order to allow the insertion of the sub-lock (30) and the locking tongue (40), the lock releaser (80) lifts the descending locking body (71), which is linked to the action of the separator (60).

To this end, the lock releaser (80) includes a first link member (81) and a second link member (83) which are interlocked with the movement of the latch rotating body (65) of the separator (60), and the first link member (81) and the second link member (83) are engaged and rotated by gears.

In addition, a first clamping piece (811) and a second clamping piece (831) are respectively arranged on one side of the first linkage piece (81) and one side of the second linkage piece (83), and a clamping rod (651) of the bolt rotating body (65) is arranged between the first clamping piece (811) and the second clamping piece (831).

Furthermore, the other side of the first linkage piece (81) is provided with a lifting guide piece (813), and the lifting guide piece (813) is inserted into the through hole (715) of the locking body (71).

Therefore, when the first link (81) is rotated clockwise, the rising guide (813) pushes the upper portion of the through hole (715) upward, and at this time, the locking body (71) rises, thereby allowing the backward movement of the sub-lock (30) and the latch tongue (40).

Therefore, the separator (60) of the invention can rotate in both directions, and for this purpose, the first linkage piece (81) and the second linkage piece (83) of the locked releaser (80) are also in gear engagement.

That is, the object of the present invention is to rotate a first link 81 in a clockwise direction, and when a separator 60 is rotated in a counterclockwise direction, a catching rod 651 of a latch rotator 65 on the separator 60 pushes a first catching part 811 of the first link 81, whereby the first link 81 can be moved in the counterclockwise direction,

when the separator (60) rotates in the counterclockwise direction, the blocking rod (651) pushes the second blocking piece (831) to rotate the second linkage piece (83) in the counterclockwise direction, and the first linkage piece (81) engaged with the second linkage piece rotates in the clockwise direction again.

In order to prevent the dead locking phenomenon of the door bolt (20), a certain time difference is required to be set, for this reason, a rod-shaped blocking rod (651) is arranged on the bolt rotating body (65), the blocking rod (651) pushes the middle part of the first blocking piece (811) or the second blocking piece (831), and a spacing area (653) between the blocking rod (651) and the separator (60) is inserted into the end part of the first blocking piece (811) or the second blocking piece (831).

For this structure, the separator (60) is provided with a pair of latch rotating bodies (65), and a bar-shaped catching rod (651) protruding at one side of the latch rotating bodies (65) and connecting ends of the protruding parts, and the escape rotating body (63) forms a triple structure between the pair of latch rotating bodies (65).

That is, when the blocking rod 651 pushes the first catching piece 811 (taking the first catching piece 811 as an example, and the second catching piece 831 is the same as the first catching piece 811), the time for which the blocking rod 651 contacts the first catching piece 811 is slower than the time for which the separator 60 pushes the first or second coupling gear 54, and thus, the rising start time of the locking body 71 is slower than the unlocking start time of the door latch 20, thereby preventing the dead lock phenomenon from occurring on the door latch 20.

Therefore, the first linkage piece (81) and the second linkage piece (83) are preferably provided with a second elastic piece (85) for restoring the first linkage piece and the second linkage piece to the original positions, and the use convenience is improved.

Although the door latch having a specific form and structure has been described above with reference to the drawings of the present invention, those skilled in the art to which the present invention pertains can make various modifications and alterations within the technical spirit and scope of the present invention, and such modifications and alterations are within the scope of the present invention.

Claims

1. A door lock latch for preventing deadlocking of a door bolt, comprising:

a mortise lock master;

the door bolt moves on the mortise lock main part in the horizontal direction and completes locking and unlocking actions;

the bolt is arranged below the bolt and can extend and retract towards the outside of the mortise lock main part;

a separator having a handle shaft inside the door, which rotates to drive the movement of the door bolt;

the locker moves up and down in the mortise lock main part to prevent the lock tongue from entering the mortise lock main part;

a lock releaser which ascends the locker to allow the latch to be sprung by the rotation of the separator;

the separator unlocks the door bolt, and after the separator starts to work, the locking releaser starts to work and can eject the lock tongue into the mortise lock main part;

the lock remover includes:

a first linkage part provided with a first clamping piece, a second linkage part engaged with the first linkage part and provided with a second clamping piece, a lifting guide part extending to the front end of the first linkage part and arranged on the locker and inserted into the through hole of the locker body,

a clamping rod of a bolt rotating body arranged on the separator is positioned between the first clamping piece and the second clamping piece,

when the separator rotates and pushes the first clamping piece or the second clamping piece, the first linkage piece rotates, and meanwhile, the lifting guide piece lifts the locking body;

the clamping rod of the separator is provided with a spacing area,

when the separator rotates, the end part of the first clamping piece or the second clamping piece is inserted into the interval area, and the clamping rod pushes the middle area of the first clamping piece or the second clamping piece, so that the locking body is lifted after the door bolt is unlocked.

2. The door lock latch for preventing deadlocking of a bolt of claim 1, further comprising:

and the second elastic piece enables the first linkage piece and the second linkage piece to return to the original position through elastic force.