CN210768211U - a door lock - Google Patents

Abstract

The utility model discloses a door lock has seted up a recess to one side on the cambered surface of spring bolt, rotationally is provided with one in the recess and prevents inserting the tongue, prevents inserting the rear end of tongue outer wall and forms a lug, prevents to insert and forms a draw-in groove on the outside that lies in the lug on the tongue outer wall, and the inner wall of lock shell catches on the lug when the spring bolt is released to one side and makes and prevent inserting the tongue rotation, makes the draw-in groove be located lock shell outer wall department, is provided with the rib on spring bolt and the corresponding plane of cambered surface to one side, relates to lock technical field. This lock sets up on oblique spring bolt and prevents inserting the tongue, prevent to form a lug and a draw-in groove on inserting the tongue, when oblique spring bolt locks, the draw-in groove is located the crack between door frame and the lock shell, when inserting article such as card from the crack, can directly block in the draw-in groove, make the card can't drive oblique spring bolt shrink along the oblique spring bolt of cambered surface extrusion of oblique spring bolt and realize unblanking, avoid lawless persons to open the lock from the outside and cause the potential safety hazard, the effect of locking is better, the security is higher, at the house, occasions such as hotel have very high use value.

Description

a door lock

technical field

The utility model relates to the technical field of locks, in particular to a door lock.

Background technique

Locks refer to appliances that play a role in sealing, including locks, keys and their accessories. Generally, they are interpreted as "sealers that must be unlocked with keys". Now, locks can be opened with light, electricity, Magnetic, sound and fingerprint commands are turned on. Locks are not only protective equipment, but also have the functions of "management" and "decoration".

The existing door lock generally includes two deadbolts, the main deadbolt and the oblique deadbolt. There is an arc surface on the oblique deadbolt. When the door is closed, the arc surface of the oblique deadbolt contacts and squeezes the door frame to shrink the door to close the door. It pops up under the action of the spring to realize the locking. Many people do not lock the door after closing the door, but only rely on the oblique latch to lock the door. Due to the curved surface of the oblique lock tongue, it is easy for people to insert steel sheets, plastic cards, etc. into the gap between the door frame and the door panel, and slide along the curved surface of the oblique lock tongue to squeeze the oblique lock tongue to retract and open the door. , it is easy to give criminals an opportunity, and the security is poor.

Therefore, how to set an anti-insertion structure on the oblique lock tongue and set a card slot on the curved surface of the oblique lock tongue, so that the inserted card cannot slide along the curved surface of the oblique lock tongue, and cannot push the oblique lock tongue to retract to achieve unlocking, improving the The locking effect of locks and the improvement of safety are technical problems that need to be solved urgently in the industry.

Utility model content

The main purpose of the utility model is to provide a door lock, which aims to set an anti-insertion structure on the oblique lock tongue, and set a slot on the curved surface of the oblique lock tongue, so that the inserted card cannot slide along the curved surface of the oblique lock tongue. It is impossible to push the oblique lock tongue to retract to realize unlocking, which improves the locking effect of the lock and improves the safety.

The utility model proposes a door lock, which comprises a lock shell, a main bolt, a main bolt push mechanism fixedly connected with the main bolt, a lock cylinder and an oblique bolt mechanism adapted to the main bolt push mechanism , the oblique bolt mechanism comprises an oblique bolt, a movable rod fixedly connected with the oblique bolt, and a baffle plate, the movable rod penetrates the baffle plate inside the lock shell and can be inserted into the baffle plate Inserting and sliding inside, a spring is sleeved on the movable rod between the oblique lock tongue and the baffle plate to keep the oblique lock tongue in a pushed-out state, and a groove is provided on the arc surface of the oblique lock tongue, An anti-insertion tongue is rotatably arranged in the groove, the rear end of the outer wall surface of the anti-insertion tongue forms a convex block, and the outer wall surface of the anti-insertion tongue forms a slot on the outer side of the convex block, When the oblique lock tongue is pushed out, the inner wall of the lock shell hooks the protrusion to make the anti-insertion tongue rotate, so that the card slot is located at the outer wall of the lock shell, and the oblique lock tongue is arranged on the plane corresponding to the arc surface. Ribbed.

Preferably, the inner end of the lock cylinder is fixed with a toggle rod that can toggle the movement of the main bolt pushing mechanism.

Preferably, a peg is hinged on the main bolt pushing mechanism, a through slot is provided on the movable rod, the outer end of the peg is inserted into the through slot, and the movable rod can be moved to achieve all The unlocking of the oblique bolt described above.

Preferably, a traction sleeve is provided on the movable rod at the rear of the baffle, and the traction sleeve can pull the movable rod to move toward the rear end. The fixed connection of the handle is driven and moved by the handle.

Preferably, a limit plate that can limit the traction sleeve is slidably disposed on the bottom surface of the inner wall of the lock shell, a limit groove is formed on the front end of the limit plate, and the limit plate A torsion spring with one end in contact with the traction sleeve is provided, and the torsion spring can push the limiting plate to move in a direction away from the traction sleeve.

Preferably, a knob that can drive the limit plate to move to clamp the traction sleeve is provided on the lock shell, the inner end of the knob penetrates the limit plate, and a knob is fixed on the inner end of the knob. Turn the sheet.

The utility model is provided with an anti-insertion tongue on the oblique lock tongue, and a convex block and a card slot are formed on the anti-insertion tongue. When the oblique lock tongue is locked, the card slot is located in the door slot between the door frame and the lock shell, and the slot is located from the door slot. When inserting a card and other items, it will be directly stuck into the card slot, so that the card cannot squeeze the oblique latch along the arc surface of the oblique latch to drive the oblique latch to shrink to achieve unlocking, so as to avoid security risks caused by criminals opening the door lock from the outside. The locking effect is better, the safety is higher, and it has high use value in residences, hotels and other occasions; ribs are arranged on the plane of the oblique lock tongue, and the ribs stick to the inner wall of the lock hole when locking, reducing the interference between the oblique lock tongue and the lock. The gap between the lock holes prevents the door from shaking when there is wind, resulting in noise caused by the collision between the oblique lock tongue and the lock hole, with higher stability and better mute effect.

Description of drawings

Fig. 1 is the embodiment schematic diagram of the present utility model;

Fig. 2 is the external structure schematic diagram of the utility model;

Fig. 3 is the top view of the utility model;

Fig. 4 is the embodiment schematic diagram of the oblique lock tongue of the present invention;

Fig. 5 is the sectional view of the oblique lock tongue of the present utility model;

Fig. 6 is the side view of the oblique lock of the present utility model;

Fig. 7 is the embodiment schematic diagram of the anti-insertion tongue of the present invention;

FIG. 8 is a schematic diagram of an embodiment of the limiting plate of the present invention.

In the figure: 1. Lock shell, 2. Main bolt, 3. Main bolt pushing mechanism, 4. Lock cylinder, 5. Oblique bolt, 51, Groove, 6. Anti-insertion bolt, 61, Bump, 62 , card slot, 7, rib, 8, movable rod, 9, spring, 10, baffle, 11, toggle rod, 12, traction sleeve, 13, handle, 14, knob, 15, limit plate, 151, limit Bit slot, 152, torsion spring, 16, rotating piece, 17, through slot, 18, pick.

The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

1-8, an embodiment of the present utility model is proposed, a door lock, comprising a lock shell 1, a main bolt 2, a main bolt pushing mechanism 3 fixedly connected with the main bolt 2, and a main bolt pushing mechanism 3 The lock cylinder 4 and the oblique bolt mechanism adapted by the mechanism 3.

The inner end of the lock cylinder 4 is fixed with a toggle lever 11 that can toggle the main bolt push mechanism 3 to move, and the main bolt push mechanism 3 is provided with a first groove and a second groove corresponding to the toggle lever 11 , by rotating the toggle lever 11 to fall into the first groove or the second groove to push the main lock bolt pushing mechanism 3 forward or backward to drive the main lock bolt 2 to lock or unlock step by step.

The main lock tongue pushing mechanism 3 is an existing mature technology, which will not be repeated here.

The oblique bolt mechanism includes an oblique bolt 5, a movable rod 8 fixedly connected with the oblique bolt 5, and a baffle 10. The movable rod 8 penetrates the baffle 10 inside the lock shell 1 and can be inserted and slid in the baffle 10. A spring 9 is sleeved on the rod 8 between the oblique lock tongue 5 and the baffle 10 to keep the oblique lock tongue 5 in the pushed-out state. The baffle 10 is fixed inside the lock shell 1, the movable rod 8 passes through the center of the block 10, and the elastic force of the spring 9 pushes the movable rod 8 to move to the outer end, thereby pushing the oblique latch 5 to keep the pushed out state. When the door is closed, the oblique latch The inward movement of 5 drives the movable rod 8 to move inward, and drives the spring 9 to move toward the baffle 10 to be compressed. After the door is closed, the spring 9 elastically pushes the oblique latch 5 to push out and lock.

A groove 51 is provided on the arc surface of the oblique lock tongue 5, and an anti-insertion tongue 6 is rotatably arranged in the groove 51. The rear end of the outer wall surface of the anti-insertion tongue 6 forms a bump 61, A slot 62 is formed on the outer side of the bump 61. The slot 62 slightly protrudes from the arc surface of the oblique lock tongue 5. When the oblique lock tongue 5 is pushed out, the inner wall of the lock shell 1 hooks the bump 61 to make the anti-insertion tongue 6 rotate, so that the anti-insertion tongue 6 rotates. The card slot 62 is located at the outer wall of the lock housing 1 .

When the oblique lock tongue 5 is locked out from the lock shell 1, the protrusion 61 hooks the side wall of the lock hole on the lock shell 1, and drives the anti-insertion tongue 6 to move the oblique lock tongue 5 outward while the oblique lock tongue 5 is moved outward. The groove 51 on the upper part rotates, so that the card slot 62 rotates accordingly, from the position shown in FIG. 4 to the position shown in FIG. 5 . After locking, the card slot 62 is located at the side wall of the lock shell 1, in the door gap formed between the lock shell 1 and the door frame. The card cannot slide along the arc surface of the oblique latch 5, squeeze the oblique latch 5 to drive the oblique latch 5 to shrink to realize the unlocking, avoid security risks caused by criminals opening the door lock from the outside, and the locking effect is better and the security is higher.

A rib 7 is provided on the plane corresponding to the oblique lock tongue 6 and the arc surface. The thickness of the rib 7 increases from the outer end to the inner end of the oblique lock tongue 5. When the lock is locked, the rib 7 gradually contacts with the inner wall of the lock hole until it is clamped tightly. The gap between the small oblique lock tongue 5 and the lock hole prevents the door from shaking when there is wind, resulting in the collision between the oblique lock tongue 5 and the lock hole to generate noise.

The main lock tongue pushing mechanism 3 is hinged with a toggle piece 18, and the movable rod 8 is provided with a through slot 17. The inner end of the paddle 18 is provided with a slanted piece, which is matched with the outer lock cylinder of the lock.

The movable rod 8 is provided with a traction sleeve 12 at the rear of the baffle 10, and the traction sleeve 12 can pull the movable rod 8 to move to the rear end. To drive the movement, the lock shell 1 is provided with a movable groove for the movement of the handle 13 and the traction sleeve 12 . The rear end of the movable rod is provided with screws, and the movable rod 8 can be rotated by screwing the screw head with a screwdriver to realize the direction conversion of the oblique locking tongue 5 .

When the door needs to be unlocked, pull the handle 13 to drive the traction sleeve 12 to move, drive the movable rod 8 to move inward, compress the spring 9, and drive the oblique latch 5 to retract into the lock housing 1 to realize the door.

The bottom surface of the inner wall of the lock shell 1 is slidably provided with a limit plate 15 that can limit the traction sleeve 12. A limit slot 151 is formed on the front end of the limit plate 15, and one end of the limit plate 15 is provided with the traction sleeve. The torsion spring 151 in contact with the sleeve 12 can push the limiting plate 15 to move away from the traction sleeve 12 . The lock housing 1 is provided with a knob 14 that can drive the limit plate 15 to move to the clamping traction sleeve 12 .

The limiting groove 151 can be clamped on one side of the traction sleeve 12 to realize anti-locking, or the traction sleeve 12 can be clamped inside the limiting groove 151 to keep the locked state.

The lower end surface of the rotating piece 16 is provided with a strip-shaped protrusion, and the limit plate 15 is provided with a "7"-shaped empty slot, and the empty slot is divided into a horizontal slot and a vertical slot. The limit plate 15 moves forward, and the limit groove 151 clamps the traction sleeve 15, so that the bar-shaped protrusions are vertically distributed and located in the vertical groove inside the empty groove. At this time, the two ends of the bar-shaped protrusion are connected to the vertical groove. At the same time, the torsion spring 151 is compressed to generate elastic force, which squeezes the limit plate 15, so that the bar-shaped protrusions clamp the vertical groove, so that the rotating piece 16 clamps the limit plate 15, and the traction sleeve 12 is clamped. As a result, the movable rod 8 cannot move, depending on whether the traction sleeve 12 is outside the limit slot 151 or inside the limit slot 151, keep the oblique bolt 5 pushed out to the locked state or keep the oblique bolt 5 retracted to the unlocked state.

When the oblique latch 5 needs to be automatically locked or unlocked, the turning knob 14 drives the rotating piece 16 to rotate, so that the bar-shaped protrusions are distributed horizontally. The limit plate 15 moves backward under the elastic force of 151, so that the limit groove 151 is separated from the traction sleeve 12, so that the oblique lock tongue 5 can be automatically locked.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims (6)

1. A door lock comprises a lock shell, a main spring bolt pushing mechanism fixedly connected with the main spring bolt, a lock cylinder matched with the main spring bolt pushing mechanism and an inclined spring bolt mechanism, and is characterized in that the inclined spring bolt mechanism comprises an inclined spring bolt, a movable rod fixedly connected with the inclined spring bolt and a baffle, the movable rod penetrates through the inside of the lock shell, the baffle can be inserted and slid in the baffle, a spring is sleeved between the inclined spring bolt and the baffle on the movable rod to enable the inclined spring bolt to keep a push-out state, a groove is formed in the arc surface of the inclined spring bolt, an anti-insertion bolt is rotatably arranged in the groove, a convex block is formed at the rear end of the outer wall surface of the anti-insertion bolt, a clamping groove is formed on the outer side of the convex block on the outer wall surface of the anti-insertion bolt, and the convex block enables the anti-insertion bolt to rotate when the inclined spring bolt is pushed out, the clamping groove is positioned on the outer wall of the lock shell, and ribs are arranged on the plane of the inclined lock tongue corresponding to the cambered surface.

2. The door lock of claim 1, wherein a poke rod for poking the main bolt pushing mechanism is fixed on the inner end of the lock cylinder.

3. The door lock of claim 1, wherein the main bolt pushing mechanism is hinged to a shifting piece, the movable rod is provided with a through groove, the outer end of the shifting piece is clamped into the through groove, and the movable rod can be shifted to move to unlock the inclined bolt.

4. The door lock of claim 1, wherein a pulling sleeve is provided on the movable rod at the rear of the blocking plate, the pulling sleeve can pull the movable rod to move towards the rear end, a pull handle is provided on the lock case, and the pulling sleeve is fixedly connected with the pull handle and driven by the pull handle to move.

5. The door lock according to claim 4, wherein a position-limiting plate is slidably disposed on the bottom surface of the inner wall of the lock case for limiting the position of the pulling sleeve, a position-limiting groove is formed on the front end of the position-limiting plate, and a torsion spring is disposed on the position-limiting plate, one end of the torsion spring contacting with the pulling sleeve, and the torsion spring can push the position-limiting plate to move away from the pulling sleeve.

6. The door lock of claim 5, wherein the lock housing is provided with a knob for driving the position-limiting plate to move to clamp the pulling sleeve, an inner end of the knob penetrates through the position-limiting plate, and a rotating piece is fixed on the inner end of the knob.

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