Single-bolt anti-latching lock body

Abstract

The application discloses a single-lock-tongue anti-locking lock body, which comprises a lock shell, a lock tongue provided with a lock rod on a lock tongue hole of the lock shell, a lock tongue driving part matched with the lock tongue arranged in the lock shell, the lock tongue driving part being capable of pushing the lock tongue to retract into the lock shell, and an anti-locking device arranged in the rotating lock shell and capable of limiting the rotation of the lock tongue driving part; the anti-locking device comprises a blocking piece, a blocking torsion spring and an anti-locking driving part matched with an anti-locking lock core, one end of the blocking piece is rotatably arranged on the lock body through a rotating shaft, the other end of the blocking piece is abutted against the anti-locking driving part through the blocking torsion spring, the anti-locking driving part is capable of pushing the blocking piece to swing upward and be matched with a lock groove of the lock tongue driving part, and the lock tongue driving part is locked. Therefore, the anti-locking function is realized by directly limiting the rotation of the lock tongue driving part through the anti-locking device, and the structure is simplified without increasing the anti-locking lock tongue.

Description

Technical Field

[0001] This invention relates to the field of door locks, and more specifically, to a single-latch deadbolt lock body. Background Technology

[0002] The lock body is one of the components of a lock. There are many types of lock bodies, with common ones including triple-latch lock bodies and double-latch lock bodies. The lock body is responsible for opening or locking doors and windows, playing an important role in theft prevention. Double-latch lock bodies typically use a slanted latch and a square latch to respectively perform the opening / closing and deadbolt functions, thus requiring components that link with the slanted and square latches, making the overall structure relatively complex. Single-latch lock bodies have a simpler structure but usually lack a deadbolt function. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a single-latch deadbolt lock body.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A single-latch deadbolt lock body includes a lock shell, a latch with a locking rod is provided on the latch hole of the lock shell, and a latch drive component is provided inside the lock shell to cooperate with the latch. The latch drive component can push the latch to retract into the lock shell. The lock shell is characterized in that a deadbolt device is also provided inside the lock shell to restrict the rotation of the latch drive component.

[0006] The deadbolt device includes a blocking member, a blocking torsion spring, and a deadbolt drive member that cooperates with the deadbolt lock cylinder. One end of the blocking member is rotatably mounted on the lock body via a rotating shaft, and the other end abuts against the deadbolt drive member via the blocking torsion spring.

[0007] The anti-locking drive can push the blocking member to swing upward and cooperate with the locking groove of the locking tongue drive to lock the locking tongue drive;

[0008] The lock housing has an unlocking slot and a deadbolt slot, which are connected by a positioning slide groove.

[0009] The anti-locking device also includes a positioning element and a positioning spring. The anti-locking drive has a mounting groove for installing the positioning element. One end of the positioning element is set in the mounting groove of the anti-locking drive and cooperates with the positioning spring, and the other end has a snap-fit ​​part.

[0010] The anti-lock drive can drive the positioning component to reciprocate between the unlocking slot and the anti-locking slot, and the locking part will move from the slide groove to the unlocking slot or the anti-locking slot under the action of the positioning spring.

[0011] The positioning spring is placed in the mounting groove and cooperates with the positioning component. The positioning component can compress the positioning spring, so that the locking part moves from the unlocking slot or the anti-locking slot to the positioning slide.

[0012] The present invention further includes: the anti-locking drive component having an anti-locking guide groove, and the lock housing having an anti-locking guide post that cooperates with the anti-locking guide groove.

[0013] The present invention further includes: a lock tongue transmission component rotatably mounted on the lock housing; one end of the lock tongue transmission component engages with the lock tongue, and the other end engages with a lock tongue drive component; the lock tongue drive component can push the lock tongue transmission component to swing, thereby causing the lock tongue to retract into the lock housing.

[0014] The present invention further includes an unlocking transmission component inside the lock housing. One end of the unlocking transmission component is hinged to the bolt transmission component, and the other end is engaged with the deadbolt cylinder. The deadbolt cylinder can drive the bolt transmission component to swing through the unlocking transmission component, thereby causing the bolt to retract into the lock housing.

[0015] The present invention further comprises: the anti-locking drive component having an unlocking guide groove, and the unlocking transmission component having an unlocking guide post that cooperates with the unlocking guide groove.

[0016] The present invention further comprises: the locking rod is fitted with a baffle and a baffle spring, and the baffle is disposed opposite to the locking tongue transmission component.

[0017] The present invention further includes a transmission reset torsion spring on the locking tongue transmission component.

[0018] The present invention further includes: a latch spring on the lock housing, which can pull the latch into the lock housing.

[0019] The present invention further includes: a latch spring on the lock housing, which can pull the latch into the lock housing.

[0020] The beneficial effects of this invention are as follows: When the lock body needs to be deadbolted, the deadbolt knob drives the deadbolt cylinder's dial to rotate, causing the deadbolt drive component to move towards the blocking component. This allows the deadbolt drive component to push the blocking component upwards to engage with the lock groove of the latch drive component, locking the latch drive component. At this time, the latch drive component cannot rotate, thus preventing it from pushing the latch back into the lock case to achieve the deadbolt function. Therefore, this invention directly restricts the rotation of the latch drive component to achieve the deadbolt function without adding a deadbolt, simplifying the structure. When the deadbolt drive component moves away from the blocking component, the blocking component will swing downwards under the action of the blocking torsion spring, separating from the lock groove of the latch drive component, releasing the lock on the latch drive component, and achieving the unlocking function. The operation is convenient. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the unlocking state structure of a single-latch deadbolt lock body according to the present invention;

[0022] Figure 2 This is a schematic diagram of the deadbolt state structure of a single-latch deadbolt lock body according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a single-latch deadbolt lock body according to the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of a single-latch deadbolt lock body in the deadbolt state according to the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of a single-latch deadbolt lock body in the unlocked state according to the present invention;

[0026] Figure 6 This is an exploded assembly view of the positioning component, positioning spring, and anti-lock drive component.

[0027] Explanation of reference numerals in the attached drawings: 1. Lock housing; 11. Unlocking slot; 12. Deadbolt slot; 13. Positioning slide; 14. Deadbolt guide post; 2. Lock tongue; 3. Lock rod; 5. Lock tongue drive component; 51. Lock groove; 6. Deadbolt device; 61. Blocking component; 62. Blocking torsion spring; 63. Deadbolt drive component; 631. Mounting groove; 632. Deadbolt guide groove; 64. Positioning component; 641. Snap-fit ​​part; 65. Positioning spring; 7. Lock tongue transmission component; 8. Unlocking transmission component. Detailed Implementation

[0028] See attached document Figures 1 to 6 The present invention provides a more detailed description of a single-latch deadbolt lock body.

[0029] from Figure 1 and Figure 2 It is known that a single-latch deadbolt lock body includes a lock shell 1. A latch 2 with a locking rod 3 is provided on the latch hole of the lock shell 1. A magnet is embedded in the latch 2. When not subjected to magnetic force, the latch 2 is placed inside the lock shell 1. In order to prevent the latch 2 from accidentally protruding outside the lock shell 1, a latch spring is provided on the lock shell 1. The latch spring can pull the latch 2 to be placed inside the lock shell 1.

[0030] from Figure 3 It can be seen that a latch drive 5 is provided inside the lock housing 1 to cooperate with the latch 2. The latch drive 5 is rotatably mounted on the lock housing 1 and connected to the square shaft. The handle can drive the latch drive 5 to rotate through the square shaft. The latch drive 5 can push the latch 2 to retract into the lock housing 1. A return torsion spring (not shown in the attached figure) is provided in the latch drive 5 so that the latch drive 5 can be reset in time.

[0031] The lock housing 1 also includes a deadbolt device 6 that restricts the rotation of the bolt drive 5. The deadbolt device 6 includes a blocking member 61, a blocking torsion spring 62, and a deadbolt drive 63 that cooperates with the deadbolt cylinder. The deadbolt cylinder is an existing structure and will not be described in detail here, nor is it shown in the attached drawings. The mounting hole for the deadbolt cylinder that cooperates with it is shown. One end of the blocking member 61 is rotatably mounted on the lock body via a pivot, and the other end abuts against the deadbolt drive 63 via the blocking torsion spring 62. When the lock body needs to be deadbolted, the deadbolt knob drives the deadbolt cylinder's dial to rotate, causing the deadbolt drive 63 to move towards the blocking member 61, so that the deadbolt drive 63 can push the blocking member 61 to swing upwards and cooperate with the lock groove 51 of the bolt drive 5. Figure 4 As shown, when the latch drive 5 is locked, it cannot rotate, thus preventing the latch 2 from retracting into the lock housing 1 to achieve the anti-locking function. Therefore, this invention directly restricts the rotation of the latch drive 5 through the anti-locking device 6 to achieve the anti-locking function, without the need to add an anti-locking latch 2, simplifying the structure. When the anti-lock drive 63 moves away from the blocking member 61, the blocking member 61 will swing downward under the action of the blocking torsion spring 62 and separate from the lock groove 51 of the latch drive 5. Figure 5 As shown, the locking of the latch drive 5 is released, realizing the unlocking function, which is convenient to operate.

[0032] from Figure 1 and Figure 2 It is known that the lock housing 1 has an unlocking slot 11 and a deadbolt slot 12, which are connected by a positioning slide 13. The deadbolt device 6 also includes a positioning member 64 and a positioning spring 65. One end of the positioning member 64 is disposed on the deadbolt drive member 63 and cooperates with the positioning spring 65, and the other end is provided with a locking part 641. Specifically, the deadbolt drive member 63 has a mounting groove 631 for mounting the positioning member 64. The positioning spring 65 is placed in the mounting groove 631 and cooperates with the positioning member 64. The positioning member 64 can compress the positioning spring 65, so that the locking part 641 moves from the unlocking slot 11 or the deadbolt slot 12 to the positioning slide 13.

[0033] When the positioning member 64 is pressed and the positioning spring 65 is compressed, the locking part 641 moves from the unlocking slot 11 or the deadbolt slot 12 to the positioning slide 13. At this time, the deadbolt drive member 63 can drive the positioning member 64 to reciprocate between the unlocking slot 11 and the deadbolt slot 12. The deadbolt drive member 63 aligns the locking part 641 of the positioning member 64 with the deadbolt slot 12 or the unlocking slot 11 according to the need for deadbolt or unlocking. After the pressure on the positioning member 64 is released, the locking part 641 will move from the positioning slide 13 to the deadbolt slot 12 or the unlocking slot 11 under the action of the positioning spring 65, locking the deadbolt drive member 63 in the deadbolt or unlocking position through the positioning member 64, preventing the deadbolt drive member 63 from moving accidentally and improving the stability of the product function.

[0034] The deadbolt drive 63 has a deadbolt guide groove 632, and the lock housing 1 is provided with a deadbolt guide post 14 that cooperates with the deadbolt guide groove 632. This can effectively guide the movement trajectory of the deadbolt drive 63 and prevent the deadbolt drive 63 from deviating during its movement. This allows the deadbolt drive 63 to accurately push the blocking member 61 to cooperate with the lock groove 51 of the lock tongue drive 5 to achieve the deadbolt function.

[0035] A latch transmission component 7 is rotatably mounted on the lock housing 1. One end of the latch transmission component 7 cooperates with the latch 2. Specifically, a baffle and a baffle spring are sleeved on the lock rod 3. The baffle is positioned opposite to the latch transmission component 7. This end of the latch transmission component 7 drives the latch 2 to move by pushing the baffle. The other end of the latch transmission component 7 cooperates with the latch drive component 5. When unlocking is required, the latch drive component 5 rotates and pushes the latch transmission component 7 to swing. The latch transmission component 7 pushes the baffle to move backward, thereby driving the latch 2 to move backward and retract into the lock housing 1. The latch transmission component 7 is equipped with a transmission return torsion spring (not shown in the attached figure), which enables the latch transmission component 7 to return to its original position in a timely manner, avoiding interference between the latch transmission component 7 and the baffle.

[0036] like Figure 3 As shown, an unlocking transmission component 8 is also provided inside the lock housing 1. One end of the unlocking transmission component 8 is hinged to the bolt transmission component 7, and the other end is engaged with the deadbolt cylinder. The deadbolt cylinder can drive the bolt transmission component 7 to swing through the unlocking transmission component 8, thereby driving the bolt 2 to retract into the lock housing 1. This allows the bolt transmission component 7 to swing and drive the bolt 2 to unlock. Unlocking can be performed through either the bolt drive component 5 or the unlocking transmission component 8. This prevents the deadbolt cylinder from driving the unlocking transmission component 8 to unlock the lock if the handle is damaged and cannot drive the bolt drive component 5 to rotate.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A single-latch deadbolt lock body, comprising a lock housing, wherein a latch with a locking rod is provided on the latch hole of the lock housing, and a latch drive component is provided inside the lock housing to cooperate with the latch, the latch drive component being capable of pushing the latch retracting into the lock housing, characterized in that: The lock housing is also equipped with a reverse locking device that restricts the rotation of the lock tongue drive component; The deadbolt device includes a blocking member, a blocking torsion spring, and a deadbolt drive member that cooperates with the deadbolt lock cylinder. One end of the blocking member is rotatably mounted on the lock body via a rotating shaft, and the other end abuts against the deadbolt drive member via the blocking torsion spring. The anti-locking drive can push the blocking member to swing upward and cooperate with the locking groove of the locking tongue drive to lock the locking tongue drive; The lock housing has an unlocking slot and a deadbolt slot, which are connected by a positioning slide groove. The anti-locking device also includes a positioning element and a positioning spring. The anti-locking drive has a mounting groove for installing the positioning element. One end of the positioning element is set in the mounting groove of the anti-locking drive and cooperates with the positioning spring, and the other end has a snap-fit ​​part. The anti-lock drive can drive the positioning component to reciprocate between the unlocking slot and the anti-locking slot, and the locking part will move from the slide groove to the unlocking slot or the anti-locking slot under the action of the positioning spring. The positioning spring is placed in the mounting groove and cooperates with the positioning component. The positioning component can compress the positioning spring, so that the locking part moves from the unlocking slot or the anti-locking slot to the positioning slide.

2. The single-latch deadbolt lock body according to claim 1, characterized in that: The deadbolt drive component has a deadbolt guide groove, and the lock housing is provided with a deadbolt guide post that cooperates with the deadbolt guide groove.

3. A single-latch deadbolt lock body according to claim 1 or 2, characterized in that: The lock case is rotatably equipped with a latch transmission component. One end of the latch transmission component cooperates with the latch, and the other end cooperates with a latch drive component. The latch drive component can push the latch transmission component to swing, thereby driving the latch to retract into the lock case.

4. A single-latch deadbolt lock body according to claim 3, characterized in that: The lock housing is also equipped with an unlocking transmission component. One end of the unlocking transmission component is hinged to the bolt transmission component, and the other end is engaged with the deadbolt cylinder. The deadbolt cylinder can drive the bolt transmission component to swing through the unlocking transmission component, thereby causing the bolt to retract into the lock housing.

5. A single-latch deadbolt lock body according to claim 4, characterized in that: The anti-lock drive component has an unlocking guide groove, and the unlocking transmission component has an unlocking guide post that cooperates with the unlocking guide groove.

6. A single-latch deadbolt lock body according to claim 4, characterized in that: The locking rod is fitted with a baffle plate and a baffle plate spring, and the baffle plate is arranged opposite to the locking tongue transmission component.

7. A single-latch deadbolt lock body according to claim 3, characterized in that: The locking tongue transmission component is equipped with a transmission reset torsion spring.

8. A single-latch deadbolt lock body according to claim 1, characterized in that: The lock housing is equipped with a latch spring, which can pull the latch into the lock housing.

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