A riot-proof lock body
By setting a limiter between the clutch seat and the rotor of the anti-theft door lock, the rotor and the clutch seat are prevented from rotating relative to each other, the problem of existing anti-theft door locks being easily destroyed and unlocked is solved, and the defense level and safety of the lock body are improved.
Patent Information
- Application Number
- CN202111669097.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-31
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2041-12-31
AI Technical Summary
When the handle and the lock body are not linked, the existing anti-theft door lock is easily destroyed and unlocked, which poses a safety hazard.
A riot-proof lock body is designed, by providing a limiting member between the clutch seat and the rotor, preventing the rotor from rotating relative to the clutch seat, allowing only synchronous rotation, thereby preventing violent unlocking.
It effectively improves the defense level, prevents the handle and the lock body from being violently unlocked when it is not linked, and enhances the safety of the lock body.
Smart Images
Figure CN114109144B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an anti-riot lock body. Background Art
[0002] In order to enhance the anti-theft effect, the existing anti-theft door lock adopts a clutch structure. The commonly used clutch includes a clutch seat, a rotating sleeve and a clutch device. The rotating sleeve is rotatably mounted on the clutch seat and its two ends are respectively connected to the handle or the torsion key through square steel. The clutch device is installed between the clutch seat and the rotating sleeve. The rotating sleeve can rotate relative to the clutch seat along its central axis through the clutch device or can rotate synchronously with the clutch seat. That is, when the door lock is locked, the handle and the lock body are not linked under the action of the clutch. When people turn the handle outside the door, the handle can only rotate idly and cannot open the door, thereby avoiding the possibility of the lock body being violently damaged. When the key is inserted into the lock core or an electronic command is issued to unlock the lock body, the handle and the lock body can be linked under the action of the clutch to open the door.
[0003] However, when the handle and the lock body are not linked under the action of the clutch, the lock can be opened violently. Therefore, there is a need to improve the structure of the existing lock body. Summary of the invention
[0004] The object of the present invention is to provide a riot-proof lock body which can prevent violent unlocking.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] A riot-proof lock body comprises a lock shell, a rotatable clutch seat is mounted on the lock shell, a rotor is sleeved in the clutch seat, a clutch device is arranged between the clutch seat and the rotor, under the action of the clutch device, the rotor can rotate synchronously with the clutch seat or the rotor can rotate relative to the clutch seat, the clutch seat is provided with an abutment portion, and a limiting member with a limiting portion is arranged on the lock shell corresponding to the abutment portion, when the rotor can rotate relative to the clutch seat, the limiting portion abuts against the abutment portion to prevent the clutch seat from rotating with the rotor, and when the rotor can rotate synchronously with the clutch seat, the limiting portion leaves the abutment portion to allow the clutch seat to rotate synchronously with the rotor.
[0007] The advantage of the present invention is that when the handle and the lock body are not linked under the action of the clutch, if a violent destroyer uses the principle of a lever to press one end of the handle to make the central axis of the rotor connected to the handle deviate from the central axis of the clutch seat, the rotor and the clutch seat will fit closely together and the clutch seat will be driven by the rotation of the handle. Therefore, by setting the limiting part, it is avoided that when the rotor can rotate relative to the clutch seat, the limiting part abuts the abutting part and the clutch seat rotates with the rotor and is violently unlocked, thereby improving the defense level. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 is a schematic diagram of the three-dimensional structure of the lock body in the embodiment;
[0009] Figure 2 is a schematic diagram of the three-dimensional structure of the lock body when some parts are decomposed in the embodiment;
[0010] Figure 3 is a schematic cross-sectional structural diagram of the lock body in the embodiment (the limiting portion abuts against the abutting portion);
[0011] Figure 4 is a schematic cross-sectional structural diagram of the lock body in the embodiment (the limiting portion is separated from the abutting portion);
[0012] Figure 5 is a schematic diagram of the three-dimensional structure of the limiting member in the embodiment;
[0013] Figure 6 It is a schematic diagram of the three-dimensional structure of the limiting member in the embodiment from another perspective. DETAILED DESCRIPTION
[0014] As attached Figure 1 To Attachment Figure 4 As shown, a riot-proof lock body includes a lock shell 1, on which a rotatable clutch seat 2 is mounted, a rotor 3 is sleeved in the clutch seat 2, and a clutch device is provided between the clutch seat 2 and the rotor 3. Under the action of the clutch device, the rotor 3 can rotate synchronously with the clutch seat 2 or the rotor 3 can rotate relative to the clutch seat 2.
[0015] Specifically, the clutch device includes a clutch pin 41 and an elastic member 42 disposed on the clutch seat 2, wherein the elastic member 42 is a spring; the rotor 3 is provided with a clamping hole 31; under the action of the elastic member 42, the clutch pin 41 exits the clamping hole 31 of the rotor 3 and shrinks in the clutch seat 2; under the push of a pushing mechanism 5, the clutch pin 41 overcomes the action of the spring and is inserted into the clamping hole 31. The pushing mechanism 5 includes a motor installed and fixed inside the lock body, and the motor is connected to a push plate 51 through a speed reduction mechanism, and the push plate 51 is an arc-shaped plate, and the push plate 51 moves up and down along the axial direction of the clutch pin 41 under the action of the motor.
[0016] The inventor discovered during use that when the handle and the lock body are not linked under the action of the clutch, if a violent vandal uses the principle of a lever to press one end of the handle, causing the central axis of the rotor 3 connected to the handle to deviate from the central axis of the clutch seat 2, the rotor 3 and the clutch seat 2 will fit closely together, and the clutch seat 2 will be driven by the rotation of the handle, thereby enabling violent unlocking, posing a safety hazard. To this end, the inventor has solved this problem through the following improved structure.
[0017] The clutch seat 2 is provided with an abutting portion 21, specifically, the abutting portion 21 is a protrusion formed on the outer surface of the clutch seat 2. A limiting member 6 having a limiting portion 61 is provided on the lock housing 1 corresponding to the abutting portion 21. When the rotor 3 can rotate relative to the clutch seat 2, the limiting portion 61 abuts against the abutting portion 21 to prevent the clutch seat 2 from rotating with the rotor 3. When the rotor 3 can rotate synchronously with the clutch seat 2, the limiting portion 61 leaves the abutting portion 21 to allow the clutch seat 2 to rotate synchronously with the rotor 3.
[0018] The pushing mechanism 5 is connected to drive a driving member 52 that can move back and forth linearly. The driving member 52 is formed on the pushing plate 51 .
[0019] The driving member 52 can have many forms. One form is that the driving member 52 is provided with a pull head 53, the upper end surface of the pull head 53 is formed with a top portion 531 and the lower end surface is formed with a pulling portion 532. The limiting member 6 can be rotatably installed in the lock housing 1 relative to the lock housing 1. Figure 5 and attached Figure 6 As shown, the limiting member 6 is formed with a resisting portion 62 and a pulled portion 63; when the driving member 52 moves straight upward, the resisting top portion 531 resists the resisting portion 62 to make the limiting member 6 rotate clockwise, and the limiting portion 61 leaves the abutting portion 21; when the driving member 52 moves straight downward, the pulling portion 532 pulls the pulled portion 63, and the limiting member 6 rotates counterclockwise, and under the action of gravity (H direction in the figure), the limiting portion 61 abuts against the abutting portion 21.
[0020] Another form of the driving member 52 is that the driving member 52 is provided with spur teeth, and the limiting member 6 can be rotatably installed in the lock case 1 relative to the lock case 1 and has a plurality of external teeth arranged around its rotation center axis and meshingly connected with the spur teeth; when the driving member 52 is straight upward, the limiting member 6 rotates clockwise, and the limiting portion 61 leaves the abutting portion 21; when the driving member 52 is straight downward, the limiting member 6 rotates counterclockwise, and the limiting portion 61 abuts against the abutting portion 21. This form is not drawn in the accompanying drawings.
[0021] The limiting member 6 can be rotatably mounted on the lock shell 1 by a pin relative to the lock shell 1, but this method is not firmly connected to the lock shell 1 and is easy to loosen. Therefore, another method can be adopted, that is, the lock body includes an inclined tongue assembly, the inclined tongue assembly has a guide rod 71, and a connecting piece 72 is fixedly provided on the lock shell 1. The connecting piece is provided with a through hole, and the guide rod 71 can automatically slide through the through hole. The limiting member 6 can be rotatably mounted on the connecting piece relative to the lock shell 1 by a pin, which is firm and stable, thereby improving the risk of preventing violent unlocking.
Claims
1. A riot-proof lock body, comprising a lock housing, a rotatable clutch seat mounted on the lock housing, a rotor sleeved in the clutch seat, a clutch device disposed between the clutch seat and the rotor, wherein the rotor can rotate synchronously with the clutch seat or relative to the clutch seat under the action of the clutch device, characterized in that: The clutch seat is provided with an abutment portion, and a limiting piece with a limiting portion is provided on the lock housing corresponding to the abutment portion. When the rotor can rotate relative to the clutch seat, the limiting piece abuts the abutment portion to prevent the clutch seat from rotating with the rotor. When the rotor can rotate synchronously with the clutch seat, the limiting piece leaves the abutment portion and allows the clutch seat to rotate synchronously with the rotor. A pushing mechanism is provided in the lock housing, and the pushing mechanism is connected to drive a driving member that can move back and forth in a straight line. A pulling head is provided on the driving member, and the upper end surface of the pulling head is formed with an abutment top and the lower end surface is formed with a pulling portion. The limiting piece can be rotatably installed in the lock housing relative to the lock housing, so The limiting member is formed with a resisting portion and a pulled portion; when the driving member moves straight up, the resisting top portion resists the resisting portion to make the limiting member rotate clockwise, and the limiting portion leaves the abutting portion; when the driving member moves straight down, the pulling portion pulls the pulled portion, the limiting member rotates counterclockwise, and under the action of gravity, the limiting portion abuts against the abutting portion, and the clutch device includes a clutch pin and an elastic member arranged on the clutch seat; the rotor is provided with a clamping hole; under the action of the elastic member, the clutch pin exits the clamping hole of the rotor and shrinks in the clutch seat; under the push of the pushing mechanism, the clutch pin overcomes the action of the spring and is inserted into the clamping hole.
2. The riot-proof lock body according to claim 1, characterized in that: The abutting portion is a protrusion formed on the outer side surface of the clutch seat.
3. The riot-proof lock body according to any one of claims 1 or 2, characterized in that: The limiting member is mounted on the lock housing via a pin so as to be rotatable relative to the lock housing.
4. The riot-proof lock body according to any one of claims 1 or 2, characterized in that: The lock body includes an inclined tongue assembly, which has a guide rod. A connecting piece is fixedly provided on the lock shell, and the connecting piece is provided with a through hole. The guide rod can automatically slide through the through hole, and the limiting member can be rotatably mounted on the connecting piece relative to the lock shell through a pin.
5. The riot-proof lock body according to claim 4, characterized in that: The pushing mechanism includes a motor installed and fixed inside the lock body. The motor is connected to a push plate through a reduction mechanism. The push plate is an arc-shaped plate. Under the action of the motor, the push plate moves up and down along the axial direction of the clutch pin; the driving member is formed on the push plate.