A kind of reverse bolt lock body

Abstract

The present invention relates to a reverse bolt lock body, comprising a lock shell and a latch bolt assembly installed in the lock shell, wherein the latch bolt assembly comprises a latch bolt frame, a latch bolt installed on the latch bolt frame, an elastic member and a push-up member, wherein the latch bolt frame is fixedly installed in the lock shell, the latch bolt abuts against the push-up member and can rotate relative to the push-up member around a central axis, the push-up member can be slidably arranged on the latch bolt frame and maintains a tendency to push the latch bolt against the push-up member to move out of the lock shell under the action of the elastic member, and the latch bolt rotates relative to the push-up member around the rotation central axis under the action of an external force and overcomes the action of the elastic member to retract into the lock shell. The present invention has the advantage of avoiding the conventional latch bolt from being in contact with the lock shell during the process of retracting into the lock shell when opening the door, thereby generating friction, making it more difficult to open the door and causing damage to the latch bolt, and especially when electronic unlocking is adopted, since the friction can be reduced, the load of the motor can be reduced when the latch bolt driven by the motor retracts.

Description

Technical Field

[0001] The invention relates to an inverted bolt lock body. Background Art

[0002] The existing lock body includes a lock shell and an inclined bolt assembly installed in the lock shell. The inclined bolt assembly includes an inclined bolt frame and an inclined bolt installed on the inclined bolt frame. When the door is opened, the inclined bolt will always be against the door frame, and friction will be generated between the inclined bolt and the door frame due to contact, which makes it more difficult to open the door and causes damage to the inclined bolt. In particular, when electronic unlocking is adopted, due to the existence of friction, when the inclined bolt driven by the motor contracts, the load of the motor suddenly increases, causing damage to the motor. Therefore, the existing structure needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a reverse bolt lock body which can reverse and retract into a lock housing when a door is opened.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A reverse bolt lock body comprises a lock shell and a tilted bolt assembly installed in the lock shell, the tilted bolt assembly comprises a tilted bolt frame, a tilted bolt installed on the tilted bolt frame, an elastic member and a push-up member, the tilted bolt frame is fixedly installed in the lock shell, the tilted bolt abuts against the push-up member and can rotate relative to the push-up member around a central axis, the push-up member can be slidably arranged on the tilted bolt frame and maintains a tendency to push the tilted bolt against the push-up member and move out of the lock shell under the action of the elastic member, and the tilted bolt rotates relative to the push-up member around the rotation center axis under the action of an external force and overcomes the action of the elastic member and retracts into the lock shell.

[0006] The advantage of the present invention is that it avoids the friction caused by the conventional latch bolt being in contact with the lock shell during the process of retracting into the lock shell when opening the door, which makes it more difficult to open the door and causes damage to the latch bolt. In particular, when electronic unlocking is adopted, the friction can be reduced, so that when the latch bolt driven by the motor retracts, the load of the motor is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of the three-dimensional structure of the lock body in the embodiment;

[0008] Figure 2 is a schematic diagram of an exploded three-dimensional structure of a key-turned lock body in an embodiment;

[0009] Figure 3 is a cross-sectional view of a key-turned lock body in an embodiment;

[0010] Figure 4 is another cross-sectional view of the key-turn lock body in the embodiment;

[0011] Figure 51 is a schematic diagram of a three-dimensional structure of the inverted tongue lock body structure in the embodiment (part of the lock shell is removed);

[0012] Figure 6 3. It is a schematic diagram of the three-dimensional structure of the inclined tongue assembly in the embodiment;

[0013] Figure 7 is a schematic diagram of an exploded three-dimensional structure of the inclined tongue assembly in the embodiment;

[0014] Figure 8 is a schematic diagram of an exploded three-dimensional structure of the inclined tongue assembly in another perspective of the embodiment;

[0015] Fig. 9 is a cross-sectional view of the lock body structure of the inverted tongue in the embodiment (the oblique tongue maintains a tendency to move out of the lock housing under the action of the spring);

[0016] Fig.10 It is a cross-sectional view of the lock body structure of the inverted bolt in the embodiment (the inclined bolt overcomes the spring force under the action of the door frame and inverts and retracts into the lock housing);

[0017] Fig.11 It is a cross-sectional view of the lock body structure of the inverted tongue in the embodiment (the inclined tongue maintains a tendency to move out of the lock housing under the action of the spring, and the limiting member leaves the limiting portion). DETAILED DESCRIPTION

[0018] As attached Figure 1 To Attachment Fig.11 The lock body shown comprises a lock housing 1 and a square tongue assembly, a tilted tongue assembly and a lock core 4 installed in the lock housing 1 .

[0019] Attached Figure 2 To Attachment Figure 4 A key-turned lock body is shown. Specifically, a guide block 51 capable of rotating relative to the lock housing 1 around a rotation center axis 100 is arranged in the lock housing 1, and an arc-shaped tooth 511 composed of a plurality of teeth is arranged on the outer peripheral wall of the guide block 51; more specifically, the guide block 51 is an arc-shaped sheet, and the arc center axis 101 of the guide block 51 is coaxial with the rotation center axis 100, and each tooth of the arc-shaped tooth 511 falls on the same circumference with the rotation center axis 100 as the center axis 101.

[0020] The square tongue assembly includes a square tongue frame 21 and a square tongue 22 mounted on the square tongue frame 21. The square tongue frame 21 is provided with a spur rack 211, which is meshed and connected with an arc-shaped tooth 511. The puller 41 of the lock core 4 is connected to the guide block 51. The forward or reverse rotation of the puller 41 can drive the guide block 51 to rotate forward or reverse around the rotation center axis 100. The forward or reverse rotation of the guide block 51 causes the square tongue 22 to retract into the lock body or extend out of the lock body. The meshing transmission of the spur rack 211 and the arc-shaped tooth 511 can overcome the existing structure with a large operating sound and the jamming of the transmission of the components, and the structure is silent, smooth in transmission, and labor-saving.

[0021] The lock housing 1 is provided with an upper guide rail 52 and a lower guide rail 53 in an arc shape, and the arc center axis 101 of the upper guide rail 52 and the lower guide rail 53 is coaxially arranged with the rotation center axis 100, and the upper and lower end surfaces of the guide block 51 are correspondingly provided with an upper guide groove 512 and a lower guide groove 513 in an arc shape, and the arc center axis 101 of the upper guide groove 512 and the lower guide groove 513 is coaxially arranged with the rotation center axis 100, and the upper guide rail 52 and the lower guide rail 53 are respectively correspondingly connected with the upper guide groove 512 and the lower guide groove 513.

[0022] The puller 41 of the lock core 4 extends between two opposite ends of the guide block 51, and the forward rotation of the puller 41 acts on one of the ends to drive the guide block 51 to rotate forward around the rotation center axis 100, and the reverse rotation of the puller 41 acts on the other end to drive the guide block 51 to reverse around the rotation center axis 100. More specifically, the rotation center axis 101 of the puller 41 of the lock core 4 is coaxial with the rotation center axis 100.

[0023] Attached Figure 5 To Attachment Fig.11 A lock body structure with an inverted tongue is shown. Specifically, the inclined tongue assembly includes an inclined tongue frame 31, an inclined tongue 32 installed on the inclined tongue frame 31, an elastic member 33 and a push-up member 34. The inclined tongue frame 31 is fixedly installed in the lock housing 1. The inclined tongue 32 abuts against the push-up member 34 and can rotate relative to the push-up member 34 around a central axis 101. The push-up member 34 is slidably arranged on the inclined tongue frame 31 and maintains a tendency to push the inclined tongue 32 toward the outside of the lock housing 1 under the action of the elastic member 33. Under the action of external force, the inclined tongue 32 rotates relative to the push-up member 34 around the rotating central axis 101 and overcomes the action of the elastic member 33 and retracts into the lock housing 1.

[0024] The lock housing 1 also has a locking device, which includes a driving device and a limiting member 6 that moves under the action of the driving device. A limiting portion 321 is provided on the inclined tongue 32. When the inclined tongue 32 extends out of the lock housing 1, under the action of the driving device, the limiting member 6 is combined with the limiting portion 321, and the inclined tongue 32 is prevented from rotating around the central axis 101 relative to the abutting member 34 and is in a locked state. When the door is opened, the limiting member 6 leaves the limiting portion 321, and the inclined tongue 32 is only resisted by the resisting member 34. At this time, when the door is opened, the door frame 102 acts on the side of the inclined tongue 32, and the inclined tongue 32 rotates around the rotation center axis 101 relative to the resisting member 34, and overcomes the effect of the elastic member 33 and retracts into the lock shell 1. As a result, it is avoided that the conventional inclined tongue 32 is in contact with the lock shell 1 on its side during the process of retracting into the lock shell 1 when opening the door, causing friction, making it more difficult to open the door and causing damage to the inclined tongue 32. In particular, when electronic unlocking is used, the friction can be reduced, so that when the inclined tongue 32 driven by the motor retracts, the load of the motor is reduced.

[0025] The mutually abutting surfaces of the abutting piece 34 and the oblique tongue 32 are correspondingly provided with a rotating recess 341 and a rotating protrusion 322 that cooperate with each other, and the rotating protrusion 322 falls into the rotating recess 341. Specifically, in the structure shown in the drawings, the rotating recess 341 is provided on the abutting piece 34 and the rotating protrusion 322 is provided on the oblique tongue 32.

[0026] The inclined tongue frame 31 is assembled by a left side plate 311, a right side plate 312, an upper cover plate 313, a lower cover plate 314 and a rear cover plate 315. The rear cover plate 315 is provided with a guide hole 316, and the upper cover plate 313 is provided with a guide groove 317 extending along the movement direction of the inclined tongue 32 extending out or retracting into the lock housing 1; the abutting member 34 is provided with a protrusion 342 and a guide column 343, and the protrusion 342 and the guide column 343 are respectively inserted into the guide groove 317 and the guide hole 316.

[0027] The elastic member 33 is a spring, which is sleeved on the guide pillar 343 , with one end of the spring abutting against the abutting member 34 and the other end abutting against the rear cover plate 315 .

[0028] The limiting portion 321 is a limiting groove arranged on the left side and the right side of the inclined tongue 32, or the limiting groove can be arranged only on the left side or the right side of the inclined tongue 32; correspondingly, the left plate 311 and the right plate 312 are provided with through grooves corresponding to the limiting grooves, or the left plate 311 or the right plate 312 are provided with through grooves corresponding to the limiting grooves. When the inclined tongue 32 is in a locked state, the limiting member 6 passes through the through groove and is stuck in the limiting groove.

[0029] The limiting member 6 maintains the state of being combined with the limiting portion 321 under the action of a return spring.

[0030] There are many ways for the limiting member 6 to move, one of which is described below. The driving device includes a motor and a motor gear driven by the motor, the motor gear is connected to the square tongue assembly to retract the square tongue 22 into the lock body or extend it out of the lock body, and a pull block is provided on the motor gear. When the motor gear acts on the square tongue assembly to retract the square tongue 22 into the lock body, the pull block acts on the limiting member 6 to overcome the action of the reset spring to disengage the limiting member 6 from the through groove and the limiting groove and allow the oblique tongue 32 to rotate relative to the abutting member 34 around the central axis 101.

[0031] Another movement mode of the limiting member 6 is introduced below: a mechanical gear is also provided in the lock housing 1, the mechanical gear is provided with a trigger head, the square tongue assembly is provided with a trigger part, and the limiting member 6 is provided with spur teeth meshing with the mechanical gear. When the puller 41 of the lock core 4 pulls the square tongue assembly to retract the square tongue 22 into the lock body, the trigger part acts on the trigger head to rotate the mechanical gear, and the mechanical gear and the spur teeth on the limiting member 6 are meshed for transmission. The limiting member 6 overcomes the action of the reset spring and disengages the limiting member 6 from the through groove and the limiting groove, allowing the inclined tongue 32 to rotate around the central axis 101 relative to the abutment member 34.

Claims

1. A reverse bolt lock body, comprising a lock housing and a tilted bolt assembly installed in the lock housing, characterized in that: The inclined tongue assembly comprises an inclined tongue frame, an inclined tongue mounted on the inclined tongue frame, an elastic member and a resisting member. The inclined tongue frame is fixedly mounted in the lock housing. The inclined tongue abuts against the resisting member and can rotate relative to the resisting member around a central axis. The resisting member can be slidably arranged on the inclined tongue frame and maintains a tendency to push the inclined tongue against the resisting member to move out of the lock housing under the action of the elastic member. Under the action of an external force, the inclined tongue rotates relative to the resisting member around the rotation central axis and overcomes the action of the elastic member to retract into the lock housing. A guide block capable of rotating relative to the lock housing around a rotation central axis is arranged in the lock housing, and an arc-shaped tooth composed of a plurality of teeth is arranged on the outer peripheral wall of the guide block. A square tongue assembly is also arranged in the lock housing, and the square tongue assembly comprises a square tongue frame and a guide block mounted on the lock housing. The square tongue on the square tongue frame is provided with a spur rack, which is meshed with the arc-shaped teeth; the puller of the lock core is connected to the guide block, and the forward or reverse rotation of the puller can drive the guide block to rotate forward or reverse around the rotation center axis, and the forward or reverse rotation of the guide block causes the square tongue to retract into the lock body or extend out of the lock body; the lock shell is provided with an upper guide rail and a lower guide rail in the shape of an arc, and the arc center axes of the upper guide rail and the lower guide rail are coaxially arranged with the rotation center axis, and the upper and lower end surfaces of the guide block are correspondingly provided with an upper guide groove and a lower guide groove in the shape of an arc, and the arc center axes of the upper guide groove and the lower guide groove are coaxially arranged with the rotation center axis, and the upper guide rail and the lower guide rail are respectively correspondingly connected with the upper guide groove and the lower guide groove.

2. The inverted bolt lock body according to claim 1, characterized in that: The mutually abutting surfaces of the abutting piece and the oblique tongue are correspondingly provided with a rotating concave and a rotating convex which match each other, and the rotating convex falls into the rotating concave.

3. A reverse bolt lock body according to any one of claim 1 or claim 2, characterized in that: The lock housing also has a locking device, which includes a driving device and a limiting member that moves under the action of the driving device. A limiting portion is provided on the inclined tongue. When the inclined tongue extends out of the lock housing, under the action of the driving device, the limiting member is combined with the limiting portion, and the inclined tongue is prevented from rotating around the central axis relative to the abutting member and is in a locked state.

4. The reverse bolt lock body according to claim 3, characterized in that: The inclined tongue frame is assembled by a left side plate, a right side plate, an upper cover plate, a lower cover plate and a rear cover plate. The rear cover plate is provided with a guide hole, and the upper cover plate is provided with a guide groove extending along the movement direction of the inclined tongue extending out or retracting into the lock shell; the abutment is provided with a protrusion and a guide column, and the protrusion and the guide column are respectively inserted into the guide groove and the guide hole.

5. The inverted bolt lock body according to claim 4, characterized in that: The elastic member is a spring, which is sleeved on the guide column, one end of the spring abuts against the abutting member and the other end abuts against the rear cover plate.

6. The reverse bolt lock body according to claim 4, characterized in that: The limiting portion is a limiting groove arranged on the left side and / or right side of the inclined tongue; the left side plate and / or right side plate are provided with a through groove corresponding to the limiting groove, and when the inclined tongue is in a locked state, the limiting piece passes through the through groove and is stuck in the limiting groove.

7. The reverse bolt lock body according to claim 3, characterized in that: The limiting member maintains a state of being combined with the limiting portion under the action of a return spring; the driving device includes a motor and a motor gear driven by the motor, the motor gear is connected to the square tongue assembly to retract the square tongue into the lock body or extend it out of the lock body, and a pulling block is provided on the motor gear. When the motor gear acts on the square tongue assembly to retract the square tongue into the lock body, the pulling block acts on the limiting member to overcome the action of the return spring to cause the limiting member to disengage from the through groove and the limiting groove and allow the oblique tongue to rotate relative to the abutting member around the central axis.

8. The reverse bolt lock body according to claim 3, characterized in that: The limiting member maintains a state in which the limiting member and the limiting part are combined under the action of a return spring; a mechanical gear is also provided in the lock housing, the mechanical gear is provided with a trigger head, the square tongue assembly is provided with a trigger part, and the limiting member is provided with spur teeth meshing with the mechanical gear. When the lock core pulls out the square tongue assembly to retract the square tongue into the lock body, the trigger part acts on the trigger head to rotate the mechanical gear, and the mechanical gear and the spur teeth on the limiting member are meshed for transmission. The limiting member overcomes the action of the return spring and causes the limiting member to disengage from the through groove and the limiting groove, allowing the oblique tongue to rotate relative to the top member around the center axis.

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