Magnetic door lock

Abstract

The utility model discloses a magnetic door lock which comprises a shell, a spring bolt, an unlocking mechanism and an external lock groove, the spring bolt is rotationally arranged in the shell, a spring bolt hole is formed in the position, corresponding to the tongue end of the spring bolt, of the shell, and the interior of the lock groove is in magnetic attraction fit with the tongue end; the unlocking mechanism comprises a rotor, a shifting block and a reset torsion spring, the two ends of the rotor are in running fit with the shell, the shifting block is arranged on the periphery of the rotor in a sleeving mode and is in transmission fit with the rotor, one end of the shifting block is provided with a shifting arm used for touching the root end of the spring bolt, the reset torsion spring is round and is arranged outside the rotor in a sleeving mode, and the two ends of a spring steel wire of the reset torsion spring are provided with clamping feet. The two clamping feet abut against the shifting block and the shell respectively so as to provide acting force for driving the shifting arm to leave the tongue root end. The unlocking mechanism of the magnetic door lock is driven by the rotor, the two ends of the rotor abut against the front side and the rear side of the shell, a better supporting effect is achieved, and rotation is more stable and reliable; meanwhile, the unlocking mechanism does not have a linkage relation with other mechanisms and acts independently, transmission resistance is reduced, and operation is more labor-saving and reliable.

Description

Technical Field

[0001] The utility model relates to a door lock, in particular to a magnetic door lock. Background Art

[0002] Chinese Patent Publication No. CN 207905517 The cam is provided with a first protrusion which is engaged with the extension arm and is used to retract the cam into the housing when the slider moves downward or backward. A small dial which is driven by a key to move the slider forward or backward to lock or unlock is provided in the housing. A large dial which is driven by a handle to rotate is provided in the housing. When the large dial is rotated, it is pressed by the radial extension of the first large dial to rotate the slider downward to unlock. A return spring is connected to the radial extension of the second large dial to reset the large dial. A limit piece is provided on the cam lock bolt to limit the downward movement position of the slider. Only when the lock body is in contact with the lock slot of the door frame, the magnet in the lock slot of the door frame and the magnet on the cam lock bolt attract each other, so that the cam lock bolt is stuck in the lock slot of the door frame to lock the door. Both the large and small levers of this structure require a slider to control unlocking (the inclined block lock bolt is retracted into the housing), resulting in a complex transmission structure and poor working reliability. Utility Model Content

[0003] The purpose of the utility model is to provide a magnetic door lock with simple and reasonable structure and reliable operation.

[0004] The purpose of this utility model is achieved in this way:

[0005] A magnetic door lock comprises a shell, a lock tongue, an unlocking mechanism and a lock slot. The lock tongue is rotatably arranged in the shell. The shell is provided with a lock tongue hole corresponding to the tongue end of the lock tongue. The lock slot is arranged outside the shell. The lock slot is magnetically engaged with the tongue end to achieve magnetic locking. The unlocking mechanism comprises a rotor, a shift block and a reset torsion spring. Both ends of the rotor are rotatably engaged with the shell. The shift block is sleeved on the outer periphery of the rotor and is transmission-coordinated with the rotor. One end of the shift block is provided with a shift arm for touching the tongue root end of the lock tongue. The reset torsion spring is circular and sleeved outside the rotor. Both ends of the spring steel wire of the reset torsion spring are provided with clamping feet. The two clamping feet respectively abut the shift block and the shell to provide a force to drive the shift arm away from the tongue root end.

[0006] The purpose of the utility model can also be solved by the following technical measures:

[0007] As a more specific solution, a handle transmission hole is provided in the center of the rotor, circular bosses are provided at both ends of the rotor, and shaft holes are provided on the front and rear sides of the shell respectively. The circular bosses are inserted into the shaft holes and rotate with the shaft holes. A limiting step is provided on the outer periphery of the rotor, and the shift block is limited between the limiting step and an inner wall of the shell.

[0008] As a further solution, a limit arm and a torsion spring stop arm are also provided on the shift block, and a limit protrusion and a limit column are provided in the rotation area corresponding to the limit arm in the shell, and the limit arm moves between the limit protrusion and the limit column; the two clamping feet of the reset torsion spring are respectively against the torsion spring stop arm and the limit column.

[0009] As a further solution, a square transmission hole is provided on the surface of the shift block, and a square column is provided on the outer periphery of the rotor. The square transmission hole and the square column are sleeved and transmission-coordinated. An annular boss is provided on the inner wall of the housing, corresponding to the outer periphery of the shaft hole. A first support is provided on the side of the housing facing the limit step, corresponding to the rotation area of ​​the shift arm. The annular boss on the same side of the housing is flush with the top surface of the first support, so that the shift arm can rotate smoothly within a certain height.

[0010] As a further solution, a back-stop locking mechanism is also provided in the shell, which includes a slider, a pendulum block and an elastic member. The slider is slidably arranged in the shell, and the pendulum block is rotatably arranged on the slider. The root end of the lock tongue is provided with an arc-shaped groove, and one end of the pendulum block is provided with a pin, which falls into the arc-shaped groove and slides with the arc-shaped groove; one end of the elastic member is against the shell, and the other end is against the side of the pendulum block facing the lock tongue; the sliding area of ​​the slider passes through the rotation area of ​​the root end of the tongue; the slider is provided with a paddle touch portion, and the paddle touch portion is used to contact and cooperate with the paddle, and the slider is controlled to enter the rotation area of ​​the root end of the tongue by rotating the paddle to limit the retraction and rotation of the extended lock tongue, thereby realizing the restricted unlocking mechanism from unlocking.

[0011] As a further solution, the slider is provided with a first guide groove and a second guide groove parallel to each other, the pendulum block is provided with a limiting hole, and the shell is provided with a first guide column and a second guide column, the first guide column extends into the first guide groove, and the second guide column extends into the second guide groove and the limiting hole at the same time.

[0012] As a further solution, the slider is provided with a friction-reducing protrusion on the side near the inner wall of the housing, a latch is provided on the slider, the slider's pusher contacts a slot, and the housing has a lock core mounting hole next to the corresponding slot; the pendulum block is provided with a socket that plugs into and rotates with the latch, a foot is provided on the side of the pendulum block facing away from the slider, the end of the foot is close to the other side of the housing's inner wall, and a second support is provided on the other side of the housing's inner wall corresponding to the pendulum block; an arm is provided on one end of the pendulum block corresponding to the lock tongue, the pusher pin is provided at the end of the arm, and a limiting boss is provided on the other end of the pendulum block corresponding to the pusher pin; the elastic member is a spring wire, one end of the spring wire having a U-shaped portion, the opening of the U-shaped portion being clamped on both sides of the pendulum block and located between the limiting boss and the latch, and one end of the spring wire having a bent portion that abuts against the inner wall of the housing. Through the action of the second support and the foot, the pendulum block is confined to a certain height within the housing, reducing friction with the slider and the housing, preventing tilting, and achieving smoother movement.

[0013] As a further solution, the inner wall of the housing is provided with curved ribs on the surfaces of the tongue end and the tongue root end of the lock tongue. A limit block is provided on the inner wall of the housing corresponding to the inner end of the tongue end, and a contact head is provided on the tongue end corresponding to the limit block. The curved ribs reduce friction, allowing the lock tongue to rotate more smoothly.

[0014] As a further solution, a rotating fulcrum is provided at the middle edge of the lock tongue, and the rotating fulcrum is rotatably matched with the shell; the two ends of the lock tongue are the tongue end and the tongue root end respectively, and the tongue end is provided with a concave cavity; an iron block and a magnetic block are respectively provided in the concave cavity and the lock slot, or a magnetic block is provided in both the concave cavity and the lock slot.

[0015] As a further solution, the shell includes a front shell, a rear shell and a side panel, the side panel is connected to one side of the front shell and the rear shell, the lock tongue hole is arranged on the side panel, and the front shell and the rear shell are provided with fulcrum holes corresponding to the rotating fulcrums, and the rotating fulcrums are rotatably matched with the fulcrum holes.

[0016] As a further solution, a buffer pad is provided between the side panels corresponding to the outer sides of the rotation fulcrum of the lock tongue to reduce collision noise.

[0017] The beneficial effects of the utility model are as follows:

[0018] (1) The unlocking mechanism of this magnetic door lock is driven by the rotor. The two ends of the rotor are against the front and rear sides of the housing, which provides better support and makes the rotation more stable and reliable. At the same time, the unlocking mechanism has no linkage relationship with other mechanisms (retraction locking mechanism) and acts independently, reducing transmission resistance and making the operation more labor-saving and reliable.

[0019] (2) This magnetic door lock is also equipped with a locking mechanism that prevents the extended lock tongue from rotating and retracting by means of a combined movement of a slider, a pendulum block and an elastic member, thereby preventing the lock tongue from rotating and retracting when the lock is extended. When unlocking, the resetting of the pendulum block can drive the lock tongue to rotate and retract, thereby unlocking the door. During the locking and unlocking process, the unlocking mechanism does not move, which reduces resistance and makes the operation easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure from another angle.

[0022] Figure 3 This is a schematic diagram of the exploded structure of the rotor and shift block in the utility model.

[0023] Figure 4 It is an enlarged structural diagram of the stop-retraction locking mechanism of the utility model.

[0024] Figure 5 This is a schematic diagram of the lock tongue structure in the utility model.

[0025] Figure 6 This is a schematic diagram of the exploded structure of the lock tongue in the present utility model.

[0026] Figure 7 This is a schematic diagram of the lock body and lock slot of the present invention at an angle.

[0027] Figure 8 for Figure 7 Schematic diagram of the structure from another angle.

[0028] Figure 9 This is a structural diagram of the lock body of the utility model in the closed state.

[0029] Figure 10 This is a structural diagram of the lock body of the present invention in the door-opening state.

[0030] Figure 11 This is a structural diagram of the lock body of the utility model in the door locking state. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0032] See also Figures 1 to 9As shown, a magnetic door lock includes a shell 1, a lock tongue 2, an unlocking mechanism and a lock slot 9. The lock tongue 2 is rotatably arranged in the shell 1. The shell 1 is provided with a lock tongue hole 131 corresponding to the tongue end 24 of the lock tongue 2. The lock slot 9 is arranged outside the shell 1. The lock slot 9 is magnetically engaged with the tongue end 24 to achieve magnetic locking; the unlocking mechanism includes a rotor 4, a shift block 3 and a reset torsion spring 5. Both ends of the rotor 4 are rotatably engaged with the shell 1. The shift block 3 is sleeved on the outer periphery of the rotor 4 and is transmission-coordinated with the rotor 4. One end of the shift block 3 is provided with a shift arm 32 for touching the tongue root end 25 of the lock tongue 2. The reset torsion spring 5 is circular and sleeved outside the rotor 4. Both ends of the spring steel wire of the reset torsion spring 5 are provided with clamping feet. The two clamping feet are respectively abutted against the shift block 3 and the shell 1 to provide a force to drive the shift arm 32 away from the tongue root end 25.

[0033] The housing 1 and the lock slot 9 are respectively arranged on the door leaf and the door frame, which are not shown in the figure.

[0034] The rotor 4 has a handle transmission hole 41 at its center, and circular bosses 42 at both ends of the rotor 4. The housing 1 has shaft holes 14 on its front and rear sides, respectively. The circular bosses 42 are inserted into and rotatably engage with the shaft holes 14. A stop step 44 is provided on the outer circumference of the rotor 4, and the shift block 3 is positioned between the stop step 44 and an inner wall of the housing 1. The handle transmission hole 41 is a square hole that connects to the square handle shaft on the door leaf. Rotating the handle drives the rotor 4 (not shown in the figure).

[0035] The shift block 3 is also provided with a limiting arm 33 and a torsion spring stop arm 34. A limiting protrusion 17 and a limiting column 16 are provided in the rotation area corresponding to the limiting arm 33 in the shell 1. The limiting arm 33 moves between the limiting protrusion 17 and the limiting column 16; the two clamping feet of the reset torsion spring 5 are respectively against the torsion spring stop arm 34 and the limiting column 16.

[0036] A transmission square hole 31 is provided on the surface of the shift block 3, and a square column body 43 is provided on the outer periphery of the rotor 4. The transmission square hole 31 is sleeved with the square column body 43 and transmits and cooperates with it; an annular boss 115 is provided on the inner wall of the shell 1 corresponding to the outer periphery of the shaft hole 14, and a first supporting platform 110 is provided on the side of the shell 1 facing the limiting step 44 corresponding to the rotation area of ​​the shift arm 32, and the annular boss 115 located on the same side of the shell 1 is flush with the top surface of the first supporting platform 110.

[0037] The shell 1 is also provided with a locking mechanism that stops retreat, which includes a slider 6, a pendulum block 7 and an elastic member. The slider 6 is slidably arranged in the shell 1, and the pendulum block 7 is rotatably arranged on the slider 6. The tongue root end 25 of the lock tongue 2 is provided with an arc-shaped slide groove 26, and one end of the pendulum block 7 is provided with a pin 73. The pin 73 falls into the arc-shaped slide groove 26 and slides with the arc-shaped slide groove 26; one end of the elastic member is against the shell 1, and the other end is against the side of the pendulum block 7 facing the lock tongue 2; the sliding area of ​​the slider 6 passes through the rotation area of ​​the tongue root end 25; the slider 6 is provided with a paddle touch portion 64, which is used to touch and cooperate with the paddle, and the slider 6 is controlled to enter the rotation area of ​​the tongue root end 25 by rotating the paddle to limit the retraction and rotation of the extended lock tongue 2, thereby realizing the unlocking of the restricted unlocking mechanism.

[0038] The slider 6 is provided with a first guide groove 61 and a second guide groove 62 parallel to each other, the pendulum block 7 is provided with a limiting hole 71, and the shell 1 is provided with a first guide column 111 and a second guide column 112. The first guide column 111 extends into the first guide groove 61, and the second guide column 112 extends into the second guide groove 62 and the limiting hole 71 at the same time.

[0039] The slider 6 is provided with a friction-reducing protrusion 65 on the side close to the inner wall of the shell 1, and the slider 6 is provided with a latch 63. The push-piece contact portion 64 of the slider 6 is a slot, and the shell 1 is provided with a lock core mounting hole 15 next to the corresponding slot; the pendulum block 7 is provided with a socket 72 to be plugged into the latch 63 and rotatably matched, and the pendulum block 7 is provided with a support foot 74 on the side facing away from the slider 6, and the end of the support foot 74 is close to the other side of the inner wall of the shell 1, and the other side of the inner wall of the shell 1 is also provided with a second support platform 114 corresponding to the pendulum block 7; the pendulum block 7 is provided with a tilting arm 76 at one end corresponding to the lock tongue 2, and the detent 73 is arranged at the end of the detent 76, and the other end of the pendulum block 7 corresponding to the detent 73 is provided with a limiting boss 75, and the elastic member is a spring wire 8, and one end of the spring wire 8 is provided with a U-shaped portion, and the opening of the U-shaped portion is stuck on both sides of the pendulum block 7 and is located between the limiting boss 75 and the tilting arm 76. One end of the spring wire 8 is provided with a bent portion, and the bent portion is against the inner wall of the shell 1.

[0040] A lock core can be installed in the lock core mounting hole 15, and a knob and a keyhole are respectively provided at both ends of the lock core, and the dial is provided in the middle of the lock core, which is rotated by a knob or a key. This method can be applicable to room door locks; alternatively, an exposed knob and a concealed knob are respectively provided at both ends of the lock core. This method is mainly applicable to bathroom door locks, which do not require a key to lock. However, if the door needs to be opened from the outside in an emergency, it can be unlocked by using a coin, a screwdriver or other plug-in in combination with the concealed knob.

[0041] Knob on one end

[0042] The inner wall of the shell 1 is provided with an arc-shaped rib 18 on the surface of the tongue end 24 and the tongue root end 25 corresponding to the lock tongue 2, and the inner end of the inner wall of the shell 1 is provided with a limit block 19 corresponding to the inner end of the tongue end 24, and the tongue end 24 is provided with a touch head 28 corresponding to the limit block 19.

[0043] The locking tongue 2 has a pivot point 21 at its central edge, which rotatably engages with the housing 1. The two ends of the locking tongue 2 are the tongue end 24 and the tongue root end 25, respectively. The tongue end 24 has a recessed cavity 27. An iron block 23 and a magnetic block are located within the recessed cavity 27 and the lock slot 9, respectively. The housing 1 includes a front shell 11, a rear shell 12, and a side plate 13. The side plate 13 is connected to one side of the front shell 11 and the rear shell 12. The locking tongue hole 131 is provided in the side plate 13. The front shell 11 and the rear shell 12 have pivot holes 113 corresponding to the pivot point 21, which rotatably engage with the pivot hole 113. A latch 29 is provided on the inner wall of the recessed cavity 27 to prevent the iron block 23 from falling out.

[0044] A buffer pad 22 is provided between the outer side of the rotation fulcrum 21 of the lock tongue 2 and the side plate 13 .

[0045] Its working principle is: take the shell and lock slot as an example, which are respectively set on the door leaf and door frame. Figure 9 As shown, when the door is closed, the tongue end 24 of the lock tongue 2 is opposite to the lock slot 9 and is sucked out by the magnetic attraction of the lock slot 9; at this time, the slider 6 does not form an obstacle with the lock tongue, as shown in point A. If the door needs to be opened, the handle drives the rotor 4 and controls the dial block 3 to rotate in the direction of arrow B. The dial arm 32 touches the tongue root end 25 of the lock tongue 2, causing the lock tongue 2 to rotate in the direction of arrow R to Figure 10 In the state shown, unlocking is achieved, the handle is released, and the unlocking mechanism is reset. Figure 10 When the door is open, turning the handle does not control the tongue end of the lock tongue to extend, to prevent the lock tongue or door frame from being damaged by accidental closing of the door. Figure 11 As shown, in the closed state, the slider 6 can be controlled by the lock core to slide in the direction of arrow C. At the same time, the slider 6 drives the pendulum block 7 to move together, and under the action of the spring wire 8, the end of the arm 76 of the pendulum block 7 is tilted upward, and the detent pin 73 is located at the lower end of the arc-shaped slide groove 26; at this time, one end of the slider 6 (as shown at D) blocks the rotation of the lock tongue, and the unlocking mechanism cannot unlock, and it can only be unlocked by the lock core, which plays an anti-theft role; when unlocking by the lock core, the slider 6 and the pendulum block 7 move in the opposite direction, the detent pin 73 touches the arc-shaped slide groove 26, and causes the lock tongue to rotate and retract, thereby achieving unlocking.

[0046] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A magnetic door lock, comprising a housing (1), a lock tongue (2), an unlocking mechanism and a lock slot (9), wherein the lock tongue (2) is rotatably arranged in the housing (1), a lock tongue hole (131) is provided in the housing (1) corresponding to the tongue end (24) of the lock tongue (2), and the lock slot (9) is arranged outside the housing (1), and the lock slot (9) is magnetically engaged with the tongue end (24) to achieve magnetic locking; the characteristics are: The unlocking mechanism comprises a rotor (4), a shift block (3) and a return torsion spring (5), wherein both ends of the rotor (4) are rotationally matched with the housing (1), the shift block (3) is sleeved on the outer periphery of the rotor (4) and is transmission-matched with the rotor (4), one end of the shift block (3) is provided with a shift arm (32) for touching the tongue root end (25) of the lock tongue (2), the return torsion spring (5) is circular and sleeved outside the rotor (4), and both ends of the spring wire of the return torsion spring (5) are provided with clamping feet, and the two clamping feet respectively abut against the shift block (3) and the housing (1) to provide a force for driving the shift arm (32) away from the tongue root end (25).

2. The magnetic door lock according to claim 1, characterized in that: The rotor (4) is provided with a handle transmission hole (41) at its center, circular bosses (42) at both ends of the rotor (4), and shaft holes (14) are respectively provided on the front and rear sides of the housing (1). The circular bosses (42) are inserted into the shaft holes (14) and rotatably engage with the shaft holes (14). A limiting step (44) is provided on the outer periphery of the rotor (4), and the shift block (3) is limited between the limiting step (44) and an inner side wall of the housing (1).

3. The magnetic door lock according to claim 2, characterized in that: The shift block (3) is further provided with a limiting arm (33) and a torsion spring stop arm (34); a limiting protrusion (17) and a limiting column (16) are provided in a rotation area corresponding to the limiting arm (33) in the housing (1); the limiting arm (33) moves between the limiting protrusion (17) and the limiting column (16); and the two clamping feet of the reset torsion spring (5) are respectively against the torsion spring stop arm (34) and the limiting column (16).

4. The magnetic door lock according to claim 2, characterized in that: A transmission square hole (31) is provided on the surface of the shift block (3), and a square column (43) is provided on the outer periphery of the rotor (4). The transmission square hole (31) and the square column (43) are sleeved and transmission-matched. An annular boss (115) is provided on the inner wall of the housing (1) corresponding to the outer periphery of the shaft hole (14). A first support (110) is provided on the side of the housing (1) facing the limiting step (44) corresponding to the rotation area of ​​the shift arm (32). The annular boss (115) located on the same side of the housing (1) is flush with the top surface of the first support (110).

5. The magnetic door lock according to claim 1, characterized in that: The housing (1) is further provided with a locking mechanism, which includes a slider (6), a pendulum block (7) and an elastic member. The slider (6) is slidably arranged in the housing (1), and the pendulum block (7) is rotatably arranged on the slider (6). The tongue root end (25) of the lock tongue (2) is provided with an arcuate slide groove (26), and one end of the pendulum block (7) is provided with a detent pin (73). The detent pin (73) falls into the arcuate slide groove (26) and slidably cooperates with the arcuate slide groove (26); one end of the elastic member One end of the slider is against the housing (1), and the other end is against the side of the pendulum block (7) facing the lock tongue (2); the sliding area of ​​the slider (6) passes through the rotation area of ​​the tongue root end (25); the slider (6) is provided with a paddle contact portion (64), and the paddle contact portion (64) is used to contact and cooperate with the paddle, and the slider (6) is controlled by rotating the paddle to enter the rotation area of ​​the tongue root end (25), so as to limit the retraction and rotation of the extended lock tongue (2), thereby realizing the restricted unlocking mechanism unlocking.

6. The magnetic door lock according to claim 5, characterized in that: The slider (6) is provided with a first guide groove (61) and a second guide groove (62) that are parallel to each other, the pendulum block (7) is provided with a limiting hole (71), and the housing (1) is provided with a first guide column (111) and a second guide column (112), the first guide column (111) extends into the first guide groove (61), and the second guide column (112) extends into the second guide groove (62) and the limiting hole (71) at the same time.

7. The magnetic door lock according to claim 5, characterized in that: The slider (6) is provided with a friction-reducing protrusion (65) on one side close to the inner wall of the housing (1), and a latch (63) is provided on the slider (6). The slider (6) has a contact portion (64) of the slider (6) as a slot, and the housing (1) has a lock core mounting hole (15) on the side corresponding to the slot; the pendulum block (7) is provided with a socket (72) for plugging and rotating with the latch (63), and the pendulum block (7) is provided with a support foot (74) on the side facing away from the slider (6), and the end of the support foot (74) is close to the other side of the inner wall of the housing (1), and the other side of the inner wall of the housing (1) also corresponds to the pendulum block. (7) is provided with a second support platform (114); one end of the pendulum block (7) corresponding to the lock tongue (2) is provided with a tilting arm (76), the detent pin (73) is arranged at the end of the tilting arm (76), and the other end of the pendulum block (7) corresponding to the detent pin (73) is provided with a limiting boss (75), the elastic member is a spring wire (8), one end of the spring wire (8) is provided with a U-shaped portion, the opening of the U-shaped portion is clamped on both sides of the pendulum block (7) and is located between the limiting boss (75) and the tilting arm (76), and one end of the spring wire (8) is provided with a bent portion, and the bent portion is against the inner wall of the shell (1).

8. The magnetic door lock according to claim 7, characterized in that: The inner wall of the housing (1) is provided with arc-shaped convex ribs (18) on the surfaces of the tongue end (24) and the tongue root end (25) of the lock tongue (2), the inner wall of the housing (1) is provided with a limit block (19) on the inner end corresponding to the tongue end (24), and the tongue end (24) is provided with a contact head (28) corresponding to the limit block (19).

9. The magnetic door lock according to claim 1, characterized in that: A rotation fulcrum (21) is provided at the middle edge of the lock tongue (2), and the rotation fulcrum (21) is rotationally matched with the housing (1); the two ends of the lock tongue (2) are the tongue end (24) and the tongue root end (25), respectively, and the tongue end (24) is provided with a concave cavity (27); an iron block (23) and a magnetic block are provided in the concave cavity (27) and the lock slot (9), respectively, or a magnetic block is provided in both the concave cavity (27) and the lock slot (9); The housing (1) comprises a front housing (11), a rear housing (12) and a side plate (13); the side plate (13) is connected to one side of the front housing (11) and the rear housing (12); the lock tongue hole (131) is provided on the side plate (13); the front housing (11) and the rear housing (12) are provided with a fulcrum hole (113) corresponding to the rotation fulcrum (21); the rotation fulcrum (21) and the fulcrum hole (113) are rotationally matched.

10. The magnetic door lock according to claim 9, characterized in that: A buffer pad (22) is provided between the outer side of the rotation fulcrum (21) of the locking tongue (2) and the corresponding side plate (13).

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