Side-knock resistant lock

Abstract

The anti-side-knocking lock provided by the utility model includes a lock tongue and a lock cylinder assembly, the lock cylinder assembly includes a lock cylinder, an anti-side-knocking piece and a rotor, the rotor is provided with an eccentric part, the eccentric part cooperates with a first buckling position of the lock tongue, when the rotor rotates, the eccentric part forces the lock tongue to move towards a second position, the lock cylinder drives the anti-side-knocking piece to rotate coaxially, the anti-side-knocking piece drives the rotor to rotate coaxially, and the anti-side-knocking piece and the rotor are arranged in such a manner that the anti-side-knocking piece idles first by an angle and then drives the rotor to rotate, the anti-side-knocking piece includes an anti-side-knocking protrusion, the lock tongue further includes a second buckling position, the second buckling position is an arc-shaped through groove extending along the circumference of the axis of the rotor, when the anti-side-knocking piece rotates, the anti-side-knocking protrusion can enter and exit the through groove along the circumference, and the anti-side-knocking protrusion buckles with the second buckling position of the lock tongue in the second position to limit the movement of the lock tongue in the second direction. The anti-side-knocking lock of the utility model reduces manufacturing difficulty and is suitable for the type of middle keyhole lock.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to an anti-side-knock lock. Background Technology

[0002] Chinese utility model patent CN114991594A discloses an anti-side-knock lock. The anti-side-knock lock includes a lock body, a rotor structure, a bolt, a first pin, and a second pin. The rotor structure includes a rotor body and a sliding component that can slide axially on the rotor body. The lock body has a first pin hole, and the bolt has a second pin hole. The sliding component can move axially when pushed by a key. When the anti-side-knock lock is in the aligned state, the sliding component is in the second position, and the first and second pins are respectively located within the first and second pin holes, allowing the eccentric body to push the bolt. When the anti-side-knock lock is in the misaligned state, the bolt is in the engaged position, the first and second pin holes and the sliding space are sequentially connected, the sliding component is in the first position, and at least a portion of the first pin enters the second pin, restricting the movement of the bolt, thereby achieving anti-side-knock protection.

[0003] The problem with existing anti-side-knock locks is that this anti-side-knock structure is only applicable to locks with the keyhole on one side. Furthermore, the rotor body of the rotor structure serves as the unlocking component of the lock, and the sliding component of the rotor structure serves as the anti-side-knock component. The unlocking component and the anti-side-knock component are integrated into one unit, which makes the component structure relatively complex, increases the weakening of the component strength, and requires high precision from the unlocking component, the anti-side-knock component, and multiple related components, making the manufacturing process more difficult. Utility Model Content

[0004] The purpose of this invention is to provide a side-knock-proof lock that reduces manufacturing difficulty and is suitable for use with a central keyhole.

[0005] This utility model provides an anti-side-knock lock, including a bolt, a lock cylinder assembly, and a reset member. The lock cylinder assembly includes a lock cylinder and a rotor. The rotor rotates around an axis extending in a first direction, and the rotor is provided with an eccentric portion relative to the axis. The bolt is configured to reciprocate along a second direction, and the bolt is provided with a first engagement position. The reset member cooperates with the bolt, and under the restoring force of the reset member, the bolt tends to move towards the first position. The eccentric portion cooperates with the first engagement position, and when the rotor rotates, the eccentric portion forces the bolt to move towards the second position. The lock cylinder assembly also includes an anti-side-knock mechanism. The anti-side-knock component is coaxially rotated by the lock cylinder, and the anti-side-knock component drives the rotor to rotate coaxially. The anti-side-knock component and the rotor are configured such that the anti-side-knock component first idles at a first angle and then drives the rotor to rotate. The anti-side-knock component includes an anti-side-knock protrusion. The lock tongue also includes a second engagement position, which is a through groove extending in an arc shape along the circumference of the rotor's axis. When the anti-side-knock component rotates, the anti-side-knock protrusion can move in and out of the through groove along the circumference. The anti-side-knock protrusion engages with the second engagement position of the lock tongue in the second position to restrict the movement of the lock tongue in the second direction.

[0006] As can be seen from the above scheme, the lock cylinder, anti-knock component, and rotor are connected axially. After the key is inserted into the twist lock cylinder, the anti-knock component rotates first, followed by the rotor. In this way, the anti-knock protrusion can be moved circumferentially away from the through groove to release the anti-knock function first, and then the rotor can be rotated to unlock. In this configuration, the rotor is located at the axis, while the anti-knock protrusion is located on the outer periphery of the axis. Thus, the lock cylinder (i.e., the keyhole) can be located at the center of the lock, and the anti-knock protrusion can be located on one side of the lock. Therefore, the lock structure of this utility model is suitable for locks with a central keyhole. In addition, the anti-knock component and the rotor only have a rotational transmission connection. Compared with the prior art, the structure of the two is simpler and the connection relationship is simpler, reducing the difficulty of manufacturing and assembly.

[0007] A further solution is to design the anti-side-knock protrusion as an arc extending circumferentially.

[0008] As can be seen from the above, the anti-side-knock protrusion can be made into a shape other than an arc shape and can also smoothly enter and exit the arc-shaped through groove. However, the arc-shaped anti-side-knock protrusion can better ensure that the arc surfaces on both sides of the outer periphery of the anti-side-knock protrusion and the arc surfaces on both sides of the through groove fit together with a smaller gap, resulting in a more ideal anti-side-knock effect.

[0009] Another further design includes a turntable portion for the anti-side-knock component, which is axially positioned between the lock cylinder and the rotor; the anti-side-knock protrusion is positioned circumferentially at the axis and protrudes axially from the turntable portion.

[0010] As can be seen above, the turntable is used to connect the lock cylinder and the rotor, and the anti-knock protrusion is used to cooperate with the lock tongue. This anti-knock component has a simple structure and is easy to process.

[0011] A further embodiment is that the turntable includes a first side and a second side that are axially opposite each other. The first side is connected to the lock cylinder for transmission. The second side is provided with a first abutment part, and the rotor is provided with a second abutment part. During the rotation of the anti-side-knock member at a first angle, the first abutment part gradually approaches the second abutment part. After the anti-side-knock member has rotated through the first angle, the first abutment part abuts against the second abutment part so that the anti-side-knock member is in transmission cooperation with the rotor.

[0012] As can be seen from the above, when the first abutting part does not abut the second abutting part, the turntable rotates freely; when the first abutting part abuts the second abutting part, it can drive the rotor to rotate. This setting satisfies the requirement of first deactivating the anti-side-knock mechanism and then unlocking it.

[0013] A further embodiment is that the second side is provided with a sedimentation tank that is recessed along the axial direction, and the second side is also provided with an eccentric protrusion that protrudes axially from the bottom of the sedimentation tank. The first abutment part is the outer peripheral surface of the eccentric protrusion. The rotor includes a third side and a fourth side that are opposite each other in the axial direction. The third side is provided with a slot that is recessed along the axial direction. The second abutment part is the inner wall surface of the slot. The eccentric part protrudes from the fourth side.

[0014] A further proposed solution is that the inner circumference of the settling tank is circular, and the rotor also includes a main body with an eccentric protrusion protruding axially from the main body, which is rotatably embedded in the settling tank.

[0015] As can be seen from the above, the turntable is equipped with a sink, and the main body of the rotor is embedded in the sink. This arrangement is mainly to minimize the increase in the total height of the lock cylinder assembly or keep the total height unchanged when the turntable is added in the axial direction between the lock cylinder and the rotor, so as not to significantly increase the volume of the lock body, and also to make the lock cylinder assembly still compatible with the original size and model of the lock body.

[0016] A further proposed solution is that, on the axial projection of the shaft, the outer contour of the eccentric protrusion is a quarter circle, and the inner contour of the slot is a three-quarter circle, with the centers of both the quarter circle and the three-quarter circle located at the shaft center.

[0017] As can be seen from the above, under this setting, before transmission, the process of the eccentric protrusion moving in the slot is equivalent to the shaft rotating in the shaft hole, and the rotation is smooth and stable; during transmission, this setting can make the contact area between the first contact part and the second contact part larger, and the transmission process also ensures the stability of the action. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the hidden lock body in an embodiment of the anti-side-knock lock of this utility model.

[0019] Figure 2 This is a structural diagram of the lock cylinder assembly in an embodiment of the anti-side-knock lock of this utility model.

[0020] Figure 3 This is an exploded view of the lock cylinder assembly from a first-person perspective, representing an embodiment of the anti-side-knock lock of this utility model.

[0021] Figure 4 This is an exploded view of the lock cylinder assembly from a second perspective in an embodiment of the anti-side-knock lock of this utility model.

[0022] Figure 5 This is a structural diagram of the lock tongue in an embodiment of the anti-side-knock lock of this utility model.

[0023] Figure 6 This is a cross-sectional structural diagram of the lock tongue, anti-side-knock protrusion, and eccentric part in an embodiment of the anti-side-knock lock of this utility model. Detailed Implementation

[0024] Anti-side-knock lock examples

[0025] See Figure 1In this embodiment, the anti-knock lock is a padlock, which includes a lock body (not shown) and a lock cylinder assembly 10, a bolt 4, a lock ring 5, and a reset member 6 disposed within the lock body. The lock cylinder assembly 10 includes a lock cylinder 1, an anti-knock member 2, and a rotor 3. Additionally, the anti-knock lock also includes a lock body (not shown). The reset member 6 is a pressure spring. [The last sentence appears to be incomplete and possibly refers to a different embodiment.] Figure 3 and Figure 4 The lock cylinder 1 is a tumbler lock cylinder in the prior art. After the matching key is inserted into the keyhole 11 at the bottom of the lock cylinder 1, the eccentric shaft 19 at the output end of the lock cylinder 1 can be rotated by the key.

[0026] See also Figure 1 and Figure 2 The rotor 3 is installed in the mounting space of the lock body and can rotate around the axis extending in the first direction (as shown in the z-axis direction). The rotor 3 is provided with an eccentric part 32 relative to the axis. The latch 4 is installed in the latch channel of the lock body and is configured to reciprocate along the second direction (as shown in the x-axis direction). The latch 4 is provided with a first engaging position 41 recessed along the first direction. The reset member 6 abuts against the latch 4. Further, the reset member 6 abuts against the lock body and the latch 4 along the second direction.

[0027] Under the restoring force of the reset member 6, the locking tongue 4 tends to move towards the first position. For example... Figure 1 As shown, the locking ring 5 is movable up and down along a first direction and connected to the lock body, and a spring along the first direction abuts between the locking ring 5 and the lock body. When the bolt 4 is in the first position, the bolt 4 can engage the locking latch 51 of the locking ring 5, thus keeping the locking ring 5 in the locked position.

[0028] The eccentric part 32 engages with the first engaging position 41. When the rotor 3 rotates, the eccentric part 32 forces the locking tongue 4 to move toward the second position. When the locking tongue 4 reaches the second position, the locking tongue 4 completely disengages from the locking position 51 of the locking ring 5. The locking ring 5 bounces up along the first direction under the action of the spring and reaches the unlocking position.

[0029] The lock cylinder 1 drives the anti-side-knock component 2 to rotate coaxially, and the anti-side-knock component 2 drives the rotor 3 to rotate coaxially. The anti-side-knock component 2 and the rotor 3 are configured such that the anti-side-knock component 2 first rotates freely at a first angle and then drives the rotor 3 to rotate.

[0030] Combination Figure 5 The anti-side-knock component 2 includes an anti-side-knock protrusion 22, and the locking tongue 4 also includes a second engaging position, which is a through groove 42 extending circumferentially along the axis of the rotor 3 in an arc shape. When the anti-side-knock component 2 rotates, the anti-side-knock protrusion 22 can move in and out of the through groove 42 circumferentially. The anti-side-knock protrusion 22 engages with the second engaging position of the locking tongue 4 in the first position to restrict the movement of the locking tongue 4 in the second direction.

[0031] Combined Figure 3 and Figure 4The anti-side-knock component 2 includes a turntable portion 21 and the aforementioned anti-side-knock protrusion 22. The turntable portion 21 is axially disposed between the lock cylinder 1 and the rotor 3. The turntable portion 21 includes a first side 201 and a second side 202 that are opposite each other in the axial direction (first direction). The first side 201 is provided with an axially recessed shaft hole 25. The shaft hole 25 is a semi-circular hole, and the center of the semi-circular hole coincides with the axis. The eccentric shaft 19 at the output end of the lock cylinder 1 is a semi-circular shaft, and the center of the semi-circular shaft coincides with the axis. The eccentric shaft 19 is inserted into the shaft hole 25 to realize that the eccentric shaft 19 drives the turntable portion 21 to rotate coaxially, that is, the first side 201 is connected to the lock cylinder 1 in a transmission connection.

[0032] The anti-knock protrusion 22 is located circumferentially at the axis center and protrudes axially from the axial surface of the second side 202 of the turntable portion 21. In this embodiment, the anti-knock protrusion 22 is configured to extend circumferentially in an arc shape, and the center of the arc coincides with the axis center.

[0033] In addition, the second side 202 is also provided with a settling tank 23 recessed along the axial direction on the aforementioned axial surface, and the second side 202 is also provided with an eccentric protrusion 24 protruding along the axial direction from the bottom of the settling tank 23. In this embodiment, on the axial projection of the axis, the outer contour of the eccentric protrusion 24 is a quarter circle, the center of the quarter circle is at the axis, and the plane on the outer peripheral surface of the eccentric protrusion 24 serves as the first abutment portion 241.

[0034] The rotor 3 includes a main body 31, which includes a third side 301 and a fourth side 302 that are axially opposite each other. The third side 301 is provided with a slot 33 that is recessed along the axial direction. The plane of the inner wall surface of the slot 33 serves as the second abutment part 331 of this invention. An eccentric part 32 protrudes from the fourth side 302. In this embodiment, on the axial projection of the shaft center, the inner contour of the slot 33 is a three-quarter circle, and the center of the three-quarter circle is at the shaft center.

[0035] The inner circumference of the sink 23 is circular, and the main body 31 is rotatably fitted into the sink 23. The main body 31 of the rotor 3 is also fitted into the sink 23. This arrangement is mainly to minimize the increase in the total height of the lock cylinder assembly 10 or keep the total height unchanged when the turntable 21 is added between the lock cylinder and the rotor 3 in the axial direction, so as not to significantly increase the volume of the lock body, and also to make the lock cylinder assembly 10 still suitable for the original size and model of the lock body.

[0036] See Figure 3 , Figure 4 and Figure 6In this embodiment, the first angle is 90 degrees. During the rotation of the anti-side-knock member 2 to the first angle, the first abutment portion 241 gradually approaches the second abutment portion 331. During this process, the anti-side-knock member 2 first rotates freely. Therefore, during this process, the anti-side-knock protrusion 22 first rotates and moves away from the through groove 42, releasing the anti-side-knock function. After the anti-side-knock member 2 rotates past the first angle, the first abutment portion 241 abuts against the second abutment portion 331 so that the anti-side-knock member 2 and the rotor 3 are in transmission engagement. The eccentric portion 32 pushes the locking tongue 4 to the second position, realizing unlocking.

[0037] See Figure 1 The rotor 3 is located at the center of the shaft, while the anti-side-knock protrusion 22 is located on the outer periphery of the shaft. In this way, the lock cylinder (i.e., the keyhole) can be located at the center of the lock, and the anti-side-knock protrusion 22 can be located on one side of the lock. Therefore, the lock structure of this utility model is suitable for locks with a central keyhole.

[0038] See Figure 3 and Figure 4 The anti-side-knock component 2 and the rotor 3 are only rotated and driven together. Compared with the prior art, the structure of the two is simpler and the matching relationship is simpler, which reduces the difficulty of manufacturing and assembly.

[0039] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A knock-resistant lock, comprising a bolt, a lock cylinder assembly, and a reset component, wherein the lock cylinder assembly comprises a lock cylinder and a rotor; The rotor rotates about an axis extending in a first direction, and the rotor is provided with an eccentric portion relative to the axis. The latch is configured to reciprocate along a second direction. The latch has a first engagement position. The reset member cooperates with the latch. Under the restoring force of the reset member, the latch tends to move toward the first position. The eccentric part engages with the first latching position, and when the rotor rotates, the eccentric part forces the locking tongue to move toward the second position; Its features are: The lock cylinder assembly also includes an anti-side-knock component. The lock cylinder drives the anti-side-knock component to rotate coaxially. The anti-side-knock component drives the rotor to rotate coaxially. The anti-side-knock component and the rotor are configured such that the anti-side-knock component first idles at a first angle and then drives the rotor to rotate. The anti-side-knock component includes anti-side-knock protrusions; The latch also includes a second engaging position, which is a through slot that extends circumferentially along the axis of the rotor in an arc shape. When the anti-side-knock component rotates, the anti-side-knock protrusion can move in and out of the through groove along the circumferential direction. The anti-side-knock protrusion engages with the second engagement position of the latch in the second position to restrict the movement of the latch in the second direction.

2. The anti-knock lock according to claim 1, characterized in that: The anti-side-knock protrusion is configured to extend in an arc shape along the circumference.

3. The anti-side-knock lock according to claim 1 or 2, characterized in that: The anti-side-knock component also includes a turntable portion, which is axially disposed between the lock cylinder and the rotor; The anti-side-knock protrusion is located circumferentially at the axis and protrudes axially from the turntable portion.

4. The anti-side-knock lock according to claim 3, characterized in that: The turntable includes a first side and a second side that are opposite each other in the axial direction, and the first side is connected to the lock cylinder in a transmission connection. The second side is provided with a first abutting part, the rotor is provided with a second abutting part, and during the process of the anti-side knocking member rotating at the first angle, the first abutting part gradually approaches the second abutting part; After the anti-side-knock component rotates through the first angle, the first abutting part abuts against the second abutting part so that the anti-side-knock component engages with the rotor drive.

5. The anti-side-knock lock according to claim 4, characterized in that: The second side is provided with a settling tank that is recessed along the axial direction, and the second side is also provided with an eccentric protrusion that protrudes from the bottom of the settling tank along the axial direction, and the first abutting part is the outer peripheral surface of the eccentric protrusion. The rotor includes a third side and a fourth side opposite to each other in the axial direction. The third side is provided with a slot recessed along the axial direction. The second abutment portion is the inner wall surface of the slot. The eccentric portion protrudes from the fourth side.

6. The anti-side-knock lock according to claim 5, characterized in that: The inner circumference of the settling tank is circular, and the rotor also includes a main body. The eccentric protrusion protrudes from the main body along the axial direction, and the main body is rotatably fitted into the settling tank.

7. The anti-side-knock lock according to claim 6, characterized in that: On the axial projection of the axis, the outer contour of the eccentric protrusion is a quarter circle, and the inner contour of the slot is a three-quarter circle. The centers of the quarter circle and the three-quarter circle are both located at the axis.

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