Lock

Abstract

The utility model relates to a lockset which comprises a lock body, a lock catch, a control assembly and a brake shaft assembly, the brake shaft assembly comprises a rack, a sleeve, a moving shaft and a brake ring, the moving shaft is arranged in the sleeve and can slide relative to the sleeve, one end of the moving shaft is matched with the lock catch, and the other end of the moving shaft is matched with the brake ring. The brake ring is limited in the sleeve in the axis direction of the moving shaft, a first reset spring is connected between the moving shaft and the brake ring, and the first reset spring is configured to enable the moving shaft to extend out of the sleeve; the brake ring is fixedly connected with a gear ring, the gear ring is connected with the rack in a meshed mode, the rack can slide along the lock body under pushing of a mandrel of the control assembly, a second reset spring is arranged between the rack and the lock body and used for driving the rack to reset after pushing force of the mandrel disappears, and the rack can drive the brake ring to rotate when sliding along the lock body. A gear and rack transmission mechanism is adopted, so that transmission between the moving shaft and the brake ring is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of door locks, and in particular relates to a lock. Background Art

[0002] The lock is primarily mounted on a door frame, locking the door by inserting a bolt into a recess in the lock. The lock comprises a lock body, a striker, a brake shaft assembly, and a control unit. The striker is mounted on a main shaft and can rotate about it. The brake shaft assembly cooperates with the striker to enable or disable rotation about the main shaft. Whether the brake shaft assembly yields to the striker depends on the control unit, which includes a solenoid and a spindle. When the solenoid is energized, the spindle moves; when de-energized, the spindle resets.

[0003] In the prior art, the transmission between the brake shaft assembly and the core shaft is not smooth, and the brake shaft assembly is easily damaged when the lock is used for a long time. Utility Model Content

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide a lock. The lock of the present invention adopts a gear rack transmission mechanism to make the transmission between the moving shaft and the brake ring more stable.

[0005] According to one aspect of the present utility model, a lock is provided, comprising a lock body, a lock catch, a control assembly and a brake shaft assembly, wherein the brake shaft assembly comprises a rack, a sleeve, a movable shaft and a brake ring, the movable shaft being disposed in the sleeve and being capable of sliding relative to the sleeve, one end of the movable shaft being engaged with the lock catch, the other end of the movable shaft being engaged with the brake ring, the brake ring being limited in the sleeve along the axial direction of the movable shaft, a first return spring being connected between the movable shaft and the brake ring, the first return spring being configured to cause the movable shaft to extend outside the sleeve to block the rotation direction of the lock catch;

[0006] The brake ring is fixedly connected to a gear ring, which is meshed with the rack. The rack can slide along the lock body under the push of the core shaft of the control component. A second return spring is provided between the rack and the lock body. The second return spring is used to drive the rack to reset after the thrust of the core shaft disappears. The rack can drive the brake ring to rotate when it slides along the lock body. The rotation of the brake ring can change the state of the movable shaft. The movable shaft has a first state in which it can be received in the sleeve to make way for the rotation of the lock buckle, and a second state in which it cannot be received in the sleeve.

[0007] Furthermore, one end of the movable shaft is engaged with the lock catch via a push rod, the push rod is slidably connected to the lock body, the end of the movable shaft close to the push rod is a conical surface, one end of the push rod is a first matching inclined surface that matches the conical surface, and the first return spring is configured to make the conical surface of the movable shaft contact the first matching inclined surface;

[0008] The other end of the push rod is provided with a second mating inclined surface, which cooperates with the lock inclined surface on the lock. A third return spring is provided between the push rod and the lock body, and the third return spring is configured to make the second mating inclined surface stick to the lock inclined surface.

[0009] Furthermore, the other end of the movable shaft is fixedly connected with a plurality of first clamping blocks, and a first clamping groove is formed between two adjacent first clamping blocks; the brake ring is fixedly connected with a plurality of second clamping blocks, and a second clamping groove is formed between two adjacent second clamping blocks, each of the first clamping blocks can cooperate with the corresponding second clamping groove, and each of the second clamping blocks can cooperate with the corresponding first clamping groove.

[0010] Furthermore, each of the first card blocks is provided with a first inclined surface on both sides close to the first card slot, and each of the second card blocks is provided with a second inclined surface on both sides close to the second card slot. The second inclined surface cooperates with the first inclined surface, and the two second inclined surfaces on each second card block intersect.

[0011] Furthermore, the sleeve includes a cylinder and an end cover, the cylinder is fixedly connected to the end cover, the brake ring is limited in the cylinder by the first return spring and the end cover, and a clearance groove for the gear ring to rotate is opened on the end cover.

[0012] Furthermore, the movable shaft is fixedly connected with a connecting pin, and two sliding grooves are provided on the cylinder body. Both sliding grooves extend along the axial direction of the movable shaft, and both ends of the connecting pin extend into the corresponding sliding grooves.

[0013] Furthermore, a circle of balls is provided between the brake ring and the end cover.

[0014] Furthermore, the rack cooperates with the core shaft of the control component through a connecting rod, the rack is fixed on the connecting rod, the connecting rod is slidably connected to the lock body, and the end of the connecting rod close to the core shaft of the control component is provided with a first matching portion that cooperates with the core shaft.

[0015] Furthermore, a first micro switch is fixed in the lock body, and a second matching portion is provided on the connecting rod, and the second matching portion matches with the action reed of the first micro switch.

[0016] Furthermore, it also includes a door state member and a second micro switch, the door state member is fixedly connected to a connecting rod, a fourth reset spring is arranged between the connecting rod and the lock body, and a third matching part is arranged at one end of the connecting rod, and the third matching part matches with the action reed of the second micro switch.

[0017] From the above technical solution, it can be seen that the lock provided by the utility model has the following beneficial effects:

[0018] The utility model adopts a gear rack transmission mechanism, which makes the transmission between the movable shaft and the brake ring more stable, and thus makes the transmission between the core shaft and the brake ring assembly more stable; the cooperation of the first inclined surface and the second inclined surface of the utility model makes the movement of the movable shaft and the rotation of the brake ring smooth and without damping during the unlocking process, overcoming the situation in the prior art where the lock cannot be unlocked due to the jamming of the slider or the brake shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a lock according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of the brake shaft assembly, lock catch and door status part of an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the rack and gear ring of the utility model;

[0022] Figure 4 This is a front view of the sleeve portion of an embodiment of the utility model;

[0023] Figure 5 for Figure 4 Cross-sectional view along the AA axis;

[0024] Figure 6 It is a schematic diagram of the moving shaft and the brake ring;

[0025] The figures in the figure are marked as: lock body 1, lock catch 2, lock catch inclined surface 21, door state member 3, push rod 4, first matching inclined surface 41, third return spring 42, control assembly 5, connecting rod 6, first matching part 61, rack 7, second return spring 71, movable shaft 8, conical surface 81, first clamping block 82, first inclined surface 821, connecting pin 83, gear ring 84, sleeve 9, end cover 91, cylinder 92, slide groove 921, brake ring 10, second clamping block 101, second inclined surface 1011, first return spring 102, ball 11. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the present invention, a lock of the present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, it shows a lock of an embodiment of the utility model, including a lock body 1, a lock buckle 2, a control component 5 and a brake shaft component, the brake shaft component including a rack 7, a sleeve 9, a movable shaft 8 and a brake ring 10, the movable shaft 8 is arranged in the sleeve 9 and can slide relative to the sleeve 9, one end of the movable shaft 8 cooperates with the lock buckle 2, and the other end of the movable shaft 8 cooperates with the brake ring 10, the brake ring 10 is limited in the sleeve 9 along the axial direction of the movable shaft 8, a first return spring 102 is connected between the movable shaft 8 and the brake ring 10, and the first return spring 102 is configured to make the movable shaft 8 extend out of the sleeve 9 to block the rotation direction of the lock buckle 2.

[0028] The brake ring 10 is fixedly connected to a ring gear 84, which is meshed with the rack 7. The rack 7 can slide along the lock body 1 under the push of the core shaft of the control component 5. A second return spring 71 is provided between the rack 7 and the lock body 1. The second return spring 71 is used to drive the rack 7 to reset after the thrust of the core shaft disappears. The rack 7 slides along the lock body 1 to drive the brake ring 10 to rotate. The rotation of the brake ring 10 can change the state of the movable shaft 8. The movable shaft 8 has a first state in which it can be received in the sleeve 9 to make way for the rotation of the lock buckle 2, and a second state in which it cannot be received in the sleeve 9.

[0029] Specifically, the lock of this embodiment includes a lock body 1, a lock catch 2, a control assembly 5, and a brake shaft assembly, wherein the lock catch 2 is arranged on the lock catch 2 rotating shaft and can rotate around the lock catch 2 rotating shaft. The lock catch 2 cooperates with one end of a movable shaft 8. Whether the lock catch 2 can rotate depends on the movable shaft 8. Along the rotation direction of the lock catch 2 when unlocking, the movable shaft 8 is located in front of the rotation direction, and the lock catch 2 is located in the rear of the rotation direction. Therefore, when the lock catch 2 is subjected to the force of the lock tongue and has a tendency to rotate, the lock catch 2 will generate a corresponding force on the movable shaft 8. Whether the lock catch 2 can push the movable shaft 8 away and rotate under this force depends on the state of the movable shaft 8. When the movable shaft 8 is in a first state, the movable shaft 8 can make way for the lock catch 2, and the lock catch 2 can push the movable shaft 8 away; when the movable shaft 8 is in a second state, the movable shaft 8 cannot make way for the lock catch 2, and the lock catch 2 cannot push the movable shaft 8 away.

[0030] The core shaft of the control assembly 5 can rotate the brake ring 10 through the engagement of the ring gear 84 and the rack 7. The brake ring 10 cooperates with the movable shaft 8, and the state of the brake ring 10 rotating the movable shaft 8 changes accordingly. For example, when the solenoid of the control assembly 5 is not energized, the movable shaft 8 is in the first state. At this time, the lock catch 2 can rotate and the door lock can be opened. When the solenoid is energized, the movable shaft 8 moves, driving the rack 7 to move. The movement of the rack 7 rotates the ring gear 84. The ring gear 84 rotates and the brake ring 10 rotates accordingly. The rotation of the brake ring 10 makes it impossible for the movable shaft 8 to be stored in the sleeve 9. In other words, the movable shaft 8 cannot make way for the lock catch 2. At this time, the lock catch 2 cannot rotate and the door lock cannot be opened. In other words, the door is locked by power.

[0031] Again, the brake ring 10 is limited in the sleeve 9 along the axial direction of the movable shaft 8, that is, the brake ring 10 cannot move along the axial direction of the movable shaft 8, and the first return spring 102 is arranged between the brake ring 10 and the movable shaft 8. Therefore, by reasonably configuring the first return spring 102, one end of the movable shaft 8 can be extended to the outside of the sleeve 9 and cooperate with the lock buckle 2, that is, by reasonably configuring the first return spring 102, one end of the movable shaft 8 can be blocked in front of the rotation direction of the lock buckle 2.

[0032] Furthermore, the spindle of the control assembly 5 is connected to a spindle return spring. Therefore, when the magnetic field generated by the solenoid of the control assembly 5 disappears, the spindle can be reset accordingly. In this embodiment, a second return spring 71 is provided between the rack 7 and the lock body 1. The second return spring 71 is used to drive the rack 7 to reset after the thrust of the spindle disappears, and the state of the rack 7 resets the movable shaft 8 again. For example, when the door is locked with power on: before power is applied, the movable shaft 8 is in the first state, and the door can be opened; after power is applied, the movable shaft 8 is in the second state, and the door cannot be opened; after power is removed again, the movable shaft 8 returns to the first state, and the door can be opened.

[0033] This embodiment adopts a transmission mechanism of the gear rack 7 to make the transmission between the movable shaft 8 and the brake ring 10 more stable; the movement of the rack 7 in this embodiment drives the gear ring 84 to rotate accordingly, thereby changing the state of the movable shaft 8 and the state of the lock. This embodiment will not have the situation in the prior art where the lock state cannot be changed after the solenoid is energized.

[0034] Finally, this embodiment adopts the transmission mechanism of the gear rack 7, which makes it easier to adjust the lock to the unlocked state or the locked state when the lock is powered off, by engaging the rack 7 with different teeth on the gear ring 84.

[0035] In one embodiment, if Figure 2As shown, one end of the movable shaft 8 cooperates with the lock catch 2 through the push rod 4, and the push rod 4 is slidingly connected to the lock body 1. The end of the movable shaft 8 close to the push rod 4 is a conical surface 81, and one end of the push rod 4 is a first matching inclined surface 41 that cooperates with the conical surface 81. The first return spring 102 is configured to make the conical surface 81 of the movable shaft 8 contact the first matching inclined surface 41; the other end of the push rod 4 is provided with a second matching inclined surface, and the second matching inclined surface cooperates with the lock catch inclined surface 21 on the lock catch 2. A third return spring 42 is provided between the push rod 4 and the lock body 1, and the third return spring 42 is configured to make the second matching inclined surface stick to the lock catch inclined surface 21.

[0036] In this embodiment, the movable shaft 8 and the push rod 4 engage with the first mating inclined surface 41 via the conical surface 81, and the first return spring 102 between the movable shaft 8 and the brake ring 10 is configured to cause the conical surface 81 of the movable shaft 8 to contact the first mating inclined surface 41. The push rod 4 and the lock catch 2 engage with the lock catch inclined surface 21 via the second mating inclined surface. Therefore, when the lock catch 2 is subjected to the force of the lock tongue and tends to rotate, the lock catch inclined surface 21 of the lock catch 2 will exert a force on the second mating inclined surface of the push rod 4, and the push rod 4 will exert a force on the conical surface 81 of the movable shaft 8 via the first mating inclined surface 41. Whether the lock catch 2 can rotate also depends on the state of the movable shaft 8.

[0037] Again, when the lock buckle 2 is able to rotate, the lock buckle 2 will push the push rod 4 to move, and the push rod 4 moves to push the movable shaft 8 to be stored in the sleeve 9; when the force of the lock tongue on the lock buckle 2 disappears, the lock buckle 2 is reset under the action of its reset spring, and the force between the lock buckle 2 and the push rod 4 disappears. The push rod 4 is correspondingly reset to the second mating inclined surface and contacts the lock buckle inclined surface 21 under the action of the third reset spring 42, and the movable shaft 8 is correspondingly reset to the conical surface 81 contacting the first mating inclined surface 41.

[0038] In one embodiment, if Figure 5 As shown, the other end of the movable shaft 8 is fixedly connected to a plurality of first clamping blocks 82, and a first clamping groove is formed between two adjacent first clamping blocks 82; the brake ring 10 is fixedly connected to a plurality of second clamping blocks 101, and a second clamping groove is formed between two adjacent second clamping blocks 101. Each first clamping block 82 can cooperate with the corresponding second clamping groove, and each second clamping block 101 can cooperate with the corresponding first clamping groove.

[0039] In this embodiment, the first clamping block 82 is arranged on the end of the movable shaft 8 near the brake ring 10, and the second clamping block 101 is arranged on the end of the brake ring 10 near the movable shaft 8. The first clamping block 82 cooperates with the second draw-in groove, and the second clamping block 101 cooperates with the first draw-in groove. Therefore, the movable shaft 8 can be accommodated in the sleeve 9, specifically, the first clamping block 82 can extend into the second draw-in groove, and the second clamping block 101 can extend into the first draw-in groove; if the movable shaft 8 cannot be accommodated in the sleeve 9, it means that the first clamping block 82 cannot extend into the second draw-in groove, and the second clamping block 101 cannot extend into the first draw-in groove. Whether the movable shaft 8 can be accommodated in the sleeve 9 can be achieved by the rack 7 driving the ring gear 84 and the brake ring 10 to rotate.

[0040] In one embodiment, if Figure 6 As shown, each first card block 82 is provided with a first inclined surface 821 on both sides close to the first card slot, and each second card block 101 is provided with a second inclined surface 1011 on both sides close to the second card slot. The second inclined surface 1011 cooperates with the first inclined surface 821, and the two second inclined surfaces 1011 on each second card block 101 intersect.

[0041] Concrete, the setting of present embodiment first inclined-plane 821 and second inclined-plane 1011 reduced the frictional force between the first clamping block 82 and the second clamping block 101 when moving shaft 8 near brake ring 10 directions.Concrete, being in second state with moving shaft 8 during power-off is example, now, moving shaft 8 can not be to moving near brake ring 10 directions, when lock catch 2 rotated after the power-on unlocking, lock catch 2 promoted push rod 4, push rod 4 moves and promotes moving shaft 8, brake ring 10 rotates, therefore the first inclined-plane 821 of moving shaft 8 slides in the second draw-in groove of brake ring 10 along the second inclined-plane 1011 of brake ring 10, therefore the cooperation of present embodiment first inclined-plane 821 and second inclined-plane 1011 makes the movement of moving shaft 8 and the rotation of brake ring 10 smooth and without damping in the unlocking process, overcome the situation that can't unlock that caused owing to slide block or brake shaft stuck in the prior art.

[0042] In one embodiment, if Figure 4-5 As shown, the sleeve 9 includes a cylinder 92 and an end cover 91, the cylinder 92 is fixedly connected to the end cover 91, the brake ring 10 is limited in the cylinder 92 by the first return spring 102 and the end cover 91, and a clearance groove is opened on the end cover 91 for the gear ring 84 to rotate.

[0043] Specifically, the sleeve 9 of this embodiment includes a barrel 92 and an end cap 91, which are fixedly connected to the end cap 91 by screws. The brake ring 10 of this embodiment is restrained within the barrel 92 by a first return spring 102 and the end cap 91. Since the brake ring 10 is located in the space between the barrel 92 and the end cap 91, a clearance groove is provided on the end cap 91 in this embodiment to allow the gear ring 84 to rotate.

[0044] In one embodiment, if Figure 5 As shown, the movable shaft 8 is fixedly connected with a connecting pin 83 , and two slide grooves 921 are provided on the cylinder 92 . Both slide grooves 921 extend along the axial direction of the movable shaft 8 , and both ends of the connecting pin 83 extend into the corresponding slide grooves 921 .

[0045] The arrangement of the connecting pin 83 and the sliding groove 921 in this embodiment enables the movable shaft 8 to move only along its axial direction, thereby overcoming the situation where the door lock cannot be opened normally due to the rotation of the movable shaft 8.

[0046] In one embodiment, a circle of balls 11 is provided between the brake ring 10 and the end cover 91. The provision of the balls 11 in this embodiment reduces the friction between the brake ring 10 and the end cover 91 during the rotation of the brake ring 10.

[0047] In one embodiment, if Figure 2 As shown, the rack 7 cooperates with the core shaft of the control component 5 through the connecting rod 6, the rack 7 is fixed on the connecting rod 6, the connecting rod 6 is slidably connected to the lock body 1, and the end of the connecting rod 6 close to the core shaft of the control component 5 is provided with a first matching part 61 that cooperates with the core shaft.

[0048] In this embodiment, the rack 7 is fixed to the connecting rod 6, and the connecting rod 6 cooperates with the core shaft of the control assembly 5 through the first matching portion 61 thereon. Specifically, when the core shaft of the control assembly 5 extends, the core shaft pushes the first matching portion 61, and the movement of the first matching portion 61 drives the rack 7 to move.

[0049] In one embodiment, a first micro switch is fixed in the lock body 1 , and a second matching portion is provided on the connecting rod 6 , and the second matching portion matches with the action reed of the first micro switch.

[0050] The first microswitch of this embodiment cooperates with the connecting rod 6 to facilitate timely monitoring of the status of the connecting rod 6. For example, if the connecting rod 6 moves after power is applied, the corresponding action reed of the first microswitch closes, and the first microswitch outputs a corresponding signal. Therefore, whether the connecting rod 6 moves can be determined by whether the corresponding signal is received after power is applied, which can be used for troubleshooting.

[0051] In one embodiment, if Figure 2 As shown, it also includes a door state member 3 and a second micro switch. The door state member 3 is fixedly connected to a connecting rod. A fourth reset spring is arranged between the connecting rod and the lock body 1. A third matching part is arranged at one end of the connecting rod, and the third matching part matches with the action reed of the second micro switch.

[0052] In this embodiment, the cooperation between the second micro switch, the door status member 3 and the connecting rod is used to output the state of the door lock, such as whether the lock tongue is located in the notch of the lock.

[0053] The brake shaft assembly of the lock of this embodiment has a simple structure and a small size, so the lock of this embodiment can be used in a wider range; the lock of this embodiment has a large pre-pressure, and can continue to open when the door lock is subjected to external force.

[0054] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0055] In addition, the terms "one", "two", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically limited.

[0056] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A lock comprising a lock body, a lock catch, a control assembly and a brake shaft assembly, characterized in that: The brake shaft assembly includes a rack, a sleeve, a movable shaft and a brake ring, the movable shaft is arranged in the sleeve and can slide relative to the sleeve, one end of the movable shaft cooperates with the lock buckle, and the other end of the movable shaft cooperates with the brake ring, the brake ring is limited in the sleeve along the axial direction of the movable shaft, and a first return spring is connected between the movable shaft and the brake ring, and the first return spring is configured to make the movable shaft extend out of the sleeve to block the rotation direction of the lock buckle; The brake ring is fixedly connected to a gear ring, which is meshed with the rack. The rack can slide along the lock body under the push of the core shaft of the control component. A second return spring is provided between the rack and the lock body. The second return spring is used to drive the rack to reset after the thrust of the core shaft disappears. The rack can drive the brake ring to rotate when it slides along the lock body. The rotation of the brake ring can change the state of the movable shaft. The movable shaft has a first state in which it can be received in the sleeve to make way for the rotation of the lock buckle, and a second state in which it cannot be received in the sleeve.

2. The lock according to claim 1, characterized in that: One end of the movable shaft is engaged with the lock catch via a push rod, and the push rod is slidably connected to the lock body. The end of the movable shaft close to the push rod is a conical surface, and one end of the push rod is a first matching inclined surface that matches the conical surface. The first return spring is configured to make the conical surface of the movable shaft contact the first matching inclined surface. The other end of the push rod is provided with a second mating inclined surface, which cooperates with the lock inclined surface on the lock. A third return spring is provided between the push rod and the lock body, and the third return spring is configured to make the second mating inclined surface stick to the lock inclined surface.

3. The lock according to claim 1, characterized in that: The other end of the movable shaft is fixedly connected to a plurality of first clamping blocks, and a first clamping groove is formed between two adjacent first clamping blocks; the brake ring is fixedly connected to a plurality of second clamping blocks, and a second clamping groove is formed between two adjacent second clamping blocks. Each first clamping block can cooperate with the corresponding second clamping groove, and each second clamping block can cooperate with the corresponding first clamping groove.

4. The lock according to claim 3, characterized in that: Each of the first card blocks is provided with a first inclined surface on both sides close to the first card slot, and each of the second card blocks is provided with a second inclined surface on both sides close to the second card slot. The second inclined surfaces cooperate with the first inclined surfaces, and the two second inclined surfaces on each second card block intersect.

5. The lock according to claim 1, characterized in that: The sleeve includes a cylinder and an end cover, the cylinder is fixedly connected to the end cover, the brake ring is limited in the cylinder by the first return spring and the end cover, and a clearance groove for the gear ring to rotate is opened on the end cover.

6. The lock according to claim 5, characterized in that: The movable shaft is fixedly connected with a connecting pin. Two sliding grooves are provided on the cylinder. Both sliding grooves extend along the axial direction of the movable shaft. Both ends of the connecting pin extend into the corresponding sliding grooves.

7. The lock according to claim 5, characterized in that: A circle of balls is arranged between the brake ring and the end cover.

8. The lock according to claim 1, wherein: The rack cooperates with the core shaft of the control component through a connecting rod, the rack is fixed on the connecting rod, the connecting rod is slidably connected to the lock body, and the end of the connecting rod close to the core shaft of the control component is provided with a first matching portion that cooperates with the core shaft.

9. The lock according to claim 8, characterized in that: A first micro switch is fixed in the lock body, and a second matching portion is provided on the connecting rod, and the second matching portion matches with the action reed of the first micro switch.

10. The lock according to any one of claims 1 to 9, characterized in that: It also includes a door state member and a second micro switch, the door state member is fixedly connected to a connecting rod, a fourth reset spring is arranged between the connecting rod and the lock body, and a third matching portion is provided at one end of the connecting rod, and the third matching portion matches with the action reed of the second micro switch.

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