CN220184846U

CN220184846U - Door bolt mechanism

Info

Publication number: CN220184846U
Application number: CN202321667794.8U
Authority: CN
Inventors: 任克要
Original assignee: Shenzhen Jingdian Intelligent Technology Co ltd
Current assignee: Shenzhen Jingdian Intelligent Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-12-15
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a door bolt mechanism, comprising: the door buckle plate and the shell are respectively provided with a boss and a first through hole which are opposite; an induction device is arranged in the shell; the sliding block is slidably arranged in the shell, and one side of the sliding block is provided with a magnetic piece for triggering the induction device; one end of the door tongue is rotationally connected with the sliding block, and the other end of the door tongue is positioned in the first through hole and is abutted with the boss; one end of the elastic piece is fixedly arranged in the shell, and the other end of the elastic piece is connected with the sliding block and used for pushing the sliding block to slide towards the first through hole; when the door tongue is separated from the boss, the elastic piece pushes the sliding block to slide, the magnetic piece slides along the sliding block and triggers the induction device, and the induction device outputs a door opening signal. In the utility model, only after the door body is pushed open and a gap is exposed between the door frame and the door body, the magnetic piece can slide along the sliding block and trigger the sensing device to output a door opening signal, and the sensing device can accurately judge whether the door body is opened or not.

Description

Door bolt mechanism

Technical Field

The utility model relates to the technical field of locks, in particular to a door bolt mechanism.

Background

The intelligent locks in the prior art are widely applied, and some existing intelligent locks have the function of sensing whether a door body is opened or not, and the intelligent locks generally sense the position of a lock tongue by adopting a travel switch or judge the position of a magnet on the lock tongue by a magnetic sensing device (such as a reed switch) so as to judge whether the door body is opened or not; however, the intelligent lock is not completely accurate when sensing whether the door body is opened or not, because the lock tongue is possibly retracted into the shell to complete unlocking at the moment, but the door body is not pushed open by a person after the lock tongue is retracted into the shell, and the sensing device or the travel switch is triggered and sends a door opening signal at the moment, but the door body is only in an unlocking state and is not opened, so that the existing intelligent lock is not completely accurate when judging whether the door body is opened or not.

There is thus a need for improvements and improvements in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a door bolt mechanism, which aims to solve the problem that in the prior art, an intelligent lock judges whether a door body is opened or not by sensing the position of a door bolt retracted into a housing, but the judging mode is not completely accurate.

The technical scheme adopted for solving the technical problems is as follows:

in a first aspect, an embodiment of the present utility model provides a door latch mechanism comprising:

the door buckle plate is used for being installed on a door frame, and one side of the door buckle plate is provided with a boss;

the shell is used for being installed on the door body, a first through hole opposite to the boss is formed in one side of the shell, and an induction device is arranged in the shell;

the sliding block is slidably arranged in the shell, and a magnetic part for triggering the induction device is arranged on one side of the sliding block;

the door tongue is rotatably connected with the sliding block at one end, and the other end of the door tongue is positioned in the first through hole and is abutted with the boss;

one end of the elastic piece is fixedly arranged in the shell, and the other end of the elastic piece is connected with the sliding block and used for pushing the sliding block to slide towards the first through hole;

when the door tongue is separated from the boss, the elastic piece pushes the sliding block to slide, the magnetic piece follows the sliding block to slide and triggers the sensing device, and the sensing device outputs a door opening signal.

As a further improvement technical scheme, in the above-mentioned door tongue structure, still include:

the locating component, slider one side is equipped with the spout, locating component's one end with one side fixed connection in the casing, locating component's the other end is located in the spout and support the slider, the elastic component is the spring, the elastic component sets up in the spout, just the elastic component both ends respectively with the one end of spout and locating component's the other end is connected.

the rotary shaft, slider one end is equipped with circular boss, be equipped with the second through-hole on the circular boss, door tongue one end is equipped with the third through-hole, the door tongue passes through the third through-hole cover is established on the circular boss, the pivot runs through the second through-hole, just the pivot top with door tongue top side butt.

As a further improvement technical scheme, a first limiting rod and a second limiting rod are respectively formed on two sides of one end, connected with the door tongue, of the sliding block, a groove is formed on the bottom side, provided with a third through hole, of the door tongue, and when one side edge of the door tongue rotates to be in butt joint with the inner side of the first through hole, one end of the groove is in butt joint with the first limiting rod/the other end of the groove is in butt joint with the second limiting rod.

As a further improvement technical scheme, a first cylinder is arranged in one end, close to the first through hole, of the sliding groove, the other end of the positioning component is located in one end, far away from the first through hole, of the sliding groove, one end of the elastic component is sleeved on the first cylinder and is abutted to the sliding groove, and the other end of the elastic component is abutted to the positioning component.

As a further improvement technical scheme, the positioning assembly comprises a positioning rod and a positioning block, wherein a fourth through hole is formed in the positioning block, one end of the positioning rod is fixedly connected with one side in the shell, the other end of the positioning rod stretches into the fourth through hole and is clamped with the positioning block, and the positioning block is arranged in the chute and is abutted with one end, far away from the first through hole, of the elastic piece;

one side of the positioning block, which is close to the elastic piece, is provided with a second column, and one end, which is far away from the first through hole, of the elastic piece is sleeved on the second column and is abutted to the positioning block.

As a further improvement technical scheme, a slotted hole is formed in one end, far away from the door tongue, of the sliding block, and the magnetic piece is arranged in the slotted hole.

As a further improvement technical scheme, the door tongue is heart-shaped, and the pointed end of the door tongue faces the boss, an arc-shaped bulge is arranged on the top side of one end, connected with the sliding block, of the door tongue, when the sensing device outputs a door opening signal, one side, close to the first through hole, of the arc-shaped bulge is abutted to one side, provided with the first through hole, of the shell, and the arc-shaped bulge is used for limiting the door tongue.

As a further improvement, the sliding groove is formed along the sliding direction of the sliding block, and the sliding block slides on the other end of the positioning component through the sliding groove.

Compared with the prior art, the embodiment of the utility model has the following advantages:

the embodiment of the utility model provides a door bolt mechanism, which comprises: the door buckle plate is used for being installed on a door frame, and one side of the door buckle plate is provided with a boss; the shell is used for being installed on the door body, a first through hole opposite to the boss is formed in one side of the shell, and an induction device is arranged in the shell; the sliding block is slidably arranged in the shell, and a magnetic part for triggering the induction device is arranged on one side of the sliding block; the door tongue is rotatably connected with the sliding block at one end, and the other end of the door tongue is positioned in the first through hole and is abutted with the boss; one end of the elastic piece is fixedly arranged in the shell, and the other end of the elastic piece is connected with the sliding block and used for pushing the sliding block to slide towards the first through hole; when the door tongue is separated from the boss, the elastic piece pushes the sliding block to slide, the magnetic piece follows the sliding block to slide and triggers the sensing device, and the sensing device outputs a door opening signal. In the utility model, only after the door body is pushed open and a gap is exposed between the door frame and the door body, the magnetic piece can slide along the sliding block and trigger the sensing device to output a door opening signal, and the sensing device can accurately judge whether the door body is opened or not.

Drawings

FIG. 1 is a schematic perspective view of a door latch mechanism according to the present utility model;

FIG. 2 is an exploded view of the housing of the present utility model;

FIG. 3 is a schematic perspective view of a housing according to the present utility model;

FIG. 4 is an exploded view of the components within the housing of the present utility model;

FIG. 5 is a schematic perspective view of a door tongue according to the present utility model;

FIG. 6 is a schematic view of the structure of the door bolt before rotation in the present utility model;

FIG. 7 is a schematic view of the structure of the door tongue rotated to abut against the first through hole;

FIG. 8 is a schematic view of the structure of the door tongue retracted into the first through hole according to the present utility model;

FIG. 9 is a schematic view of the internal structure of the lock of the present utility model in a locked state;

FIG. 10 is a schematic view of the internal structure of the lock of the present utility model in a half-open state;

FIG. 11 is a schematic view of the internal structure of the lock of the present utility model in an unlocked state;

fig. 12 is a schematic view of the internal structure of the lock after the door body is opened.

In the figure: 1. a door buckle plate; 101. a boss; 2. a housing; 201. a first through hole; 3. a slide block; 301. a chute; 302. a circular boss; 303. a second through hole; 304. a first stop lever; 305. a second limit rod; 306. a first column; 307. a guide groove; 4. a positioning assembly; 401. a positioning rod; 402. a positioning block; 4021. a fourth through hole; 4022. a second column; 5. an elastic member; 6. a door tongue; 601. a third through hole; 602. a groove; 603. arc-shaped bulges; 7. a rotating shaft; 8. an induction device; 9. a magnetic member; 10. a slot hole; 11. a door lock mechanism; 1101. a cam; 1102. a supporting plate; 1103. a bolt; 1104. a key hole; 12. a latch mechanism; 1201. a connecting rod; 1202. a beveled tongue; 1203. a baffle; 1204. fixing the clamping block; 1205. a pressure spring; 13. a slide sheet; 1301. a fifth through hole; 1302. a blocking part; 14. a vertical spring; 15. and a slide bar.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Embodiment one:

as shown in fig. 1-8, wherein the door latch mechanism includes: the door buckle plate 1 is used for being installed on a door frame, and a boss 101 is arranged on one side of the door buckle plate 1; a casing 2, configured to be mounted on a door body, wherein a first through hole 201 opposite to the boss 101 is provided on one side of the casing 2, and an induction device 8 is provided in the casing 2; the sliding block 3 is slidably arranged in the shell 2, and a magnetic piece 9 for triggering the induction device 8 is arranged on one side of the sliding block 3; the door tongue 6, one end of the door tongue 6 is rotatably connected with the sliding block 3, and the other end of the door tongue 6 is positioned in the first through hole 201 and is abutted against the boss 101; an elastic member 5, wherein one end of the elastic member 5 is fixedly arranged in the housing 2, and the other end of the elastic member is connected with the sliding block 3 and is used for pushing the sliding block 3 to slide towards the first through hole 201; when the door tongue 6 is separated from the boss 101, the elastic piece 5 pushes the sliding block 3 to slide, the magnetic piece 9 follows the sliding block 3 to slide and triggers the sensing device 8, and the sensing device 8 outputs a door opening signal.

As shown in fig. 1 and 3, in the present embodiment, the latch mechanism includes two parts, one part is a latch plate 1 mounted on a door frame (not shown), a boss 101 is provided on the latch plate 1, and the other part is a housing 2 mounted on a door body (not shown); a first through hole 201 is formed in one side of the shell 2 opposite to the door gusset plate 1, and the first through hole 201 is opposite to the boss 101; as shown in fig. 2, a sliding block 3, an elastic member 5, an induction device 8 and a magnetic member 9 are arranged in the casing 2, wherein the sliding block 3 is slidably arranged in the casing 2, the left end of the sliding block 3 is rotatably connected with the right end of the door tongue 6, when the door body is in a door closing state, the left end of the door tongue 6 is positioned in the first through hole 201 and is abutted against the boss 101, at the moment, the elastic member 5 deforms and applies a leftward force to the sliding block 3, the magnetic member 9 is fixedly arranged on one side of the sliding block 3, the induction device 8 is fixedly arranged on the inner side of the casing 2, and when the door body is in a door closing state, the magnetic member 9 is opposite to the induction device 8, the magnetic member 9 can be magnetic steel or magnetite, and the induction device 8 comprises a conventional magnetic sensor such as a reed pipe; when the door body is pushed open to expose a gap between the door frame and the door tongue 6 is separated from the boss 101, the door tongue 6 extends out of the first through hole 201, the elastic piece 5 pushes the sliding block 3 to slide, the magnetic piece 9 follows the sliding block 3 to slide and triggers the sensing device 8, and the sensing device 8 outputs a door opening signal. For example, if the sensing device 8 includes a reed switch, after the magnetic element 9 slides along the slider 3 for a certain distance, the reed switch cannot sense the magnetic element 9 and is triggered, and at this time, the sensing device 8 further includes a conventional circuit board (not shown) and a signal module (not shown), after the signal module and the reed switch are electrically connected to the circuit board, the reed switch is triggered to transmit a door opening signal to the circuit board, and then the circuit board transmits the door opening signal to the signal module and the signal module outputs the door opening signal to the outside; or the signal module is replaced by the existing alarm device, and the alarm device directly gives out an alarm bell after receiving the door opening signal. In the utility model, only after the door body is pushed open and a gap is exposed between the door frames, the magnetic piece 9 can slide along the sliding block 3 and trigger the induction device 8 to output a door opening signal, so that the induction device 8 can accurately judge whether the door body is opened or not; meanwhile, because a gap exists between two adjacent sides of the door frame and the door body, the influence of the gap between the door slits on the retraction stroke of the door tongue 6 can be compensated through the boss 101.

As a further scheme, in the door bolt structure, still include locating component 4, slider 3 one side is equipped with spout 301, locating component 4 one end with one side fixed connection in the casing 2, locating component 4's the other end is located in spout 301 and support slider 3, elastic component 5 is the spring, elastic component 5 sets up in spout 301, just elastic component 5 both ends respectively with spout 301's one end and locating component 4's the other end is connected. Specifically, when the sliding block 3 slides, the other end of the positioning component 4 and the sliding groove 301 relatively move, the sliding block 3 can slide on the other end of the positioning component 4 through the sliding groove 301, the elastic piece 5 is installed in the sliding groove 301, the left end of the elastic piece 5 is abutted with the left side in the sliding groove 301, the right end of the elastic piece 5 is abutted with the other end of the positioning component 4, the elastic piece 5 is a spring, therefore, when the door body is in a closed state, the spring is in a compressed state, and after the door body is opened, the spring is restored to deformation.

As shown in fig. 4, in a further aspect, the door latch mechanism further includes a rotating shaft 7, a circular boss 302 is disposed at the left end of the slider 3, a second through hole 303 is disposed on the circular boss 302, a third through hole 601 is disposed at the right end of the door latch 6, the door latch 6 is sleeved on the circular boss 302 through the third through hole 601, the rotating shaft 7 penetrates through the second through hole 303, and the top end of the rotating shaft 7 abuts against the top side of the door latch 6, so that the door latch 6 can rotate around the left end of the slider 3 through the rotating shaft 7.

In this embodiment, a first stop lever 304 and a second stop lever 305 are respectively formed on two sides of the left end of the slider 3, a groove 602 is formed on the bottom side of the door tongue 6 where the third through hole 601 is formed, and when one side edge of the door tongue 6 rotates to abut against the inner side of the first through hole 201, one end of the groove 602 abuts against the first stop lever 304 or the other end of the groove 602 abuts against the second stop lever 305; at this time, the boss 101 presses the other side edge of the door tongue 6, so that the door tongue 6 is contracted toward the inside of the first through hole 201.

As a further scheme, a first column 306 is disposed in the left end of the chute 301, the other end of the positioning assembly 4 is disposed in the right end of the chute 301, the left end of the elastic member 5 is sleeved on the first column 306 and abuts against the chute 301, and the right end of the elastic member 5 abuts against the positioning assembly 4. Meanwhile, if the elastic member 5 is a tension spring, the other end of the positioning component 4 is disposed at the left end in the chute 301, the first column 306 is mounted at the right end in the chute 301, and two ends of the tension spring are fixedly connected with the positioning component 4 and the first column 306 respectively, so that the technical problem of the utility model can be solved, and the effects are consistent.

As a further scheme, the positioning assembly 4 includes a positioning rod 401 and a positioning block 402, a fourth hole 4021 is provided on the positioning block 402, one end of the positioning rod 401 is fixedly connected with one side in the housing 2, the other end of the positioning rod extends into the fourth hole 4021 and is clamped with the positioning block 402, the positioning block 402 is disposed in the chute 301 and is abutted to the right end of the elastic member 5, and the positioning block 402 and the positioning rod 401 are combined with the door tongue 6 to support the sliding block 3.

Further, a second post 4022 is provided on the left side of the positioning block 402, and the right end of the elastic member 5 is sleeved on the second post 4022 and abuts against the positioning block 402.

In this embodiment, a slot 10 is disposed at an end of the slider 3 away from the door tongue 6, and the magnetic member 9 is disposed in the slot 10.

As shown in fig. 5, as a further scheme, the door tongue 6 is heart-shaped, and the tip of the door tongue 6 faces the boss 101, an arc-shaped protrusion 603 is disposed on the top side of one end, connected to the slider 3, of the door tongue 6, when the sensing device 8 outputs a door opening signal, the left end of the door tongue 6 extends out from the first through hole 201 to the greatest extent, the left side of the arc-shaped protrusion 603 abuts against the inner side of the side, provided with the first through hole 201, of the housing 2, and the arc-shaped protrusion 603 is used for limiting the door tongue 6. Meanwhile, because the door tongue 6 is of a heart-shaped structure, the left side and the right side are symmetrical oblique sides, the door body can be opened to the left side or the right side, and the door tongue 6 mechanism can be normally used, so that the compatibility of the door tongue 6 mechanism with the door body in the opening direction is improved, and the fault rate of installation is reduced (for example, the door tongue 6 mechanism on the front side or the back side can be used).

As a further solution, the sliding groove 301 is opened along the sliding direction of the sliding block 3, and the sliding block 3 slides on the other end of the positioning assembly 4 through the sliding groove 301, specifically, the sliding groove 301 is opened along the horizontal direction.

In this embodiment, when the door body is pushed from the door-open state to the door-closed state, there are two strokes, wherein the first stroke: the door tongue 6 collides with the boss 101 and swings reversely or positively, the left end or the right end of the arc-shaped protrusion 603 slides tangentially to the side of the shell 2 provided with the first through hole 201, the right side of the arc-shaped protrusion 603 rotates relative to the sliding block 3 and pushes the sliding block 3, so that the sliding block 3 compresses the elastic piece 5, and the door tongue 6 retracts a certain distance into the shell 2; the second stroke: when one oblique side of the door tongue 6 rotates to be abutted against the inner side of the first through hole 201, the door body is pushed into the door frame continuously, the other oblique side of the door tongue 6 is extruded by the boss 101, at the moment, the door tongue 6 retracts into the first through hole 201 and drives the sliding block 3 to compress the elastic piece 5, when the tip of the door tongue 6 retracts to be flush with one side of the shell 2 close to the door buckle plate 1, the left end of the door lock just retracts into the first through hole 201 and abuts against the boss 101, the magnetic piece 9 is reset to be opposite to the sensing device 8, and at the moment, the sensing device 8 stops outputting a door opening signal.

As shown in fig. 6-8, before closing the door, the door tongue 6 protrudes out of the first through hole 201; when the door is closed, one side of the door tongue 6 is abutted against the inner side of the first through hole 201, and the door tongue 6 undergoes two sections of strokes; after the door is closed, the door tongue 6 is retracted into the through hole, the door tongue 6 is abutted with the boss 101, and the spring is in a compressed state.

Embodiment two:

as shown in fig. 9-12, the present utility model further provides a lock, wherein the lock comprises a latch 6 mechanism, a door lock mechanism 11 disposed in the housing 2, and a latch mechanism 12 disposed in the housing 2; the door lock mechanism 11 comprises a cam 1101, a supporting plate 1102 and a lock tongue 1103, wherein the supporting plate 1102 is clamped with the cam 1101, the lock tongue 1103 is fixed at the right end of the supporting plate 1102, a key hole 1104 is formed in the cam 1101, the cam 1101 can be driven to rotate after a key is inserted to drive the supporting plate 1102 to move, the supporting plate 1102 can drive the lock tongue 1103 to move left and right, the lock tongue mechanism 12 comprises a connecting rod 1201, inclined tongues and a baffle 1203 fixedly arranged at the two ends of the connecting rod 1201, a fixed clamping block 1204 is arranged in the middle of the connecting rod 1201, the side part of the fixed clamping block 1204 is fixedly connected with a shell 2 of the lock body, a pressure spring 1205 is arranged between the fixed clamping block 1204 and the inclined tongues, a sliding plate 13 and a vertical spring 14 are further arranged in the lock, the bottom end of the vertical spring 14 is connected with the side part of the supporting plate 1102, the top end of the vertical spring 14 is connected with the sliding plate 13, a fifth through hole 1301 is formed in the sliding plate 13, the fifth through hole 1301 is vertically distributed, a clamping protrusion is arranged on the supporting plate 1102, one end of the clamping protrusion is arranged in the fifth through hole 1301, a blocking part 1302 is fixedly arranged below the blocking part 1302 of the sliding plate 13, one side of the sliding plate 3 is provided with a guide groove 307, one side close to the sliding plate 13, and the end of the sliding plate 307 is abutted against the guide groove 307.

As shown in fig. 9, when the lock is in the locked state; the lock tongue 1103, the door tongue 6 and the inclined tongue 1202 extend out of the shell 2, the vertical spring 14 and the pressure spring 1205 are in a normal extending state, and the clamping convex part is abutted with the bottom end of the fifth through hole 1301;

as shown in fig. 10, when the lock is in the half-open state; cam 1101 moves pallet 1102 leftward a certain distance, and slide 13 moves laterally along pallet 1102, and abuts against the right side of stopper 1203 when moving to the left side of stopper 1302.

As shown in fig. 11, when the lock is in an unlocked state; when the cam 1101 continues to rotate and drives the supporting plate 1102 to move leftwards, the sliding plate 13 pushes the baffle 1203 to move through the blocking part 1302, the baffle 1203 drives the connecting rod 1201 and the inclined tongue 1202 to move leftwards, and the pressure spring 1205 is gradually compressed at the moment; when the latch 1103 is fully retracted into the housing 2, the latch 1202 is also fully retracted into the housing 2; at this time, the door body is pushed, and the door buckle plate 1 presses the door tongue 6, so that the door tongue 6 mechanism moves leftwards and finally retracts into the shell 2.

As shown in fig. 12, when the door body is in an open state, the door buckle plate 1 is separated from the door tongue 6, the door tongue 6 is ejected out of the housing 2 rightward, at this time, the inclined plane at the left end of the guide slot 307 presses the slide rod 15 downward, at this time, the slide plate 13 moves downward along the fifth through hole 1301, when the slide plate 13 moves downward to a limit, the blocking part 1302 is dislocated from the blocking plate 1203, at this time, under the action of the pressure spring 1205, the pressure spring 1205 recovers deformation and ejects the inclined tongue 1202 out of the housing 2, at this time, the door can be closed by the inclined tongue mechanism 12 at will, and the cam 1101 does not need to be twisted again when the door is closed.

In summary, an embodiment of the present utility model provides a door latch mechanism, including: the door buckle plate 1 is used for being installed on a door frame, and a boss 101 is arranged on one side of the door buckle plate 1; a casing 2, configured to be mounted on a door body, wherein a first through hole 201 opposite to the boss 101 is provided on one side of the casing 2, and an induction device 8 is provided in the casing 2; the sliding block 3 is slidably arranged in the shell 2, and a magnetic piece 9 for triggering the induction device 8 is arranged on one side of the sliding block 3; the door tongue 6, one end of the door tongue 6 is rotatably connected with the sliding block 3, and the other end of the door tongue 6 is positioned in the first through hole 201 and is abutted against the boss 101; an elastic member 5, wherein one end of the elastic member 5 is fixedly arranged in the housing 2, and the other end of the elastic member is connected with the sliding block 3 and is used for pushing the sliding block 3 to slide towards the first through hole 201; when the door tongue 6 is separated from the boss 101, the elastic piece 5 pushes the sliding block 3 to slide, the magnetic piece 9 follows the sliding block 3 to slide and triggers the sensing device 8, and the sensing device 8 outputs a door opening signal. In the utility model, only after the door body is pushed open and a gap is exposed between the door frame and the door body, the magnetic piece 9 can slide along the sliding block 3 and trigger the sensing device 8 to output a door opening signal, and the sensing device 8 can accurately judge whether the door body is opened or not.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The above examples of the present utility model are of course more detailed, but should not be construed as limiting the scope of the utility model, and various other embodiments are possible, based on which those skilled in the art can obtain other embodiments without any inventive task, which fall within the scope of the utility model as defined in the appended claims.

Claims

1. A door latch mechanism, comprising:

2. The door latch mechanism of claim 1, further comprising:

3. The door latch mechanism of claim 2, further comprising:

4. A door bolt mechanism according to claim 3, wherein a first limit lever and a second limit lever are respectively formed on both sides of one end of the slider connected with the door bolt, a groove is formed on the bottom side of the door bolt where the third through hole is formed, and when one side edge of the door bolt rotates to be in contact with the inner side of the first through hole, one end of the groove is in contact with the first limit lever/the other end of the groove is in contact with the second limit lever.

5. The door bolt mechanism according to claim 2, wherein a first column is arranged in one end of the sliding groove, which is close to the first through hole, the other end of the positioning component is located in one end of the sliding groove, which is far away from the first through hole, one end of the elastic component is sleeved on the first column and is abutted to the sliding groove, and the other end of the elastic component is abutted to the positioning component.

6. The door bolt mechanism according to claim 5, wherein the positioning assembly comprises a positioning rod and a positioning block, a fourth through hole is formed in the positioning block, one end of the positioning rod is fixedly connected with one side in the shell, the other end of the positioning rod stretches into the fourth through hole and is clamped with the positioning block, and the positioning block is arranged in the sliding groove and is abutted with one end, away from the first through hole, of the elastic piece;

7. The door latch mechanism according to claim 1, wherein an end of said slider remote from said door latch is provided with a slot, and said magnetic member is disposed in said slot.

8. The door bolt mechanism according to claim 1, wherein the door bolt is heart-shaped, and the tip of the door bolt faces the boss, an arc-shaped protrusion is arranged on the top side of one end of the door bolt connected with the sliding block, and when the sensing device outputs a door opening signal, one side of the arc-shaped protrusion, which is close to the first through hole, is abutted with one side of the shell, which is provided with the first through hole, so that the door bolt is limited.

9. The door latch mechanism of claim 2, wherein said runner is open in a sliding direction of said slider, said slider sliding through said runner on the other end of said positioning assembly.