CN112177443A

CN112177443A - Linkage structure of manual latch bolt and safety bolt

Info

Publication number: CN112177443A
Application number: CN202010358624.6A
Authority: CN
Inventors: 刘金华
Original assignee: Jinhua Huawei Intelligent Technology Co ltd
Current assignee: Jinhua Huawei Intelligent Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-01-05

Abstract

The invention discloses a linkage structure of a manual oblique tongue and a safety tongue, which is characterized by comprising a lock shell, a safety tongue, a safety dial, a push plate, an oblique tongue, and a set of dials that rotate synchronously with the handle. It is linked with the push plate, the push plate is linked with the insurance dial, the external force drives the insurance dial to rotate, pushes the insurance tongue to move in a straight line and stretches out of the lock shell, the tail of the insurance tongue is provided with a locking groove, and the insurance dial falls into the locking groove Restricting the straight back of the safety tongue, there is a linkage on the push plate, the linkage drives the safety dial to rotate in one direction and drives the safety tongue to retract into the lock shell, and the oblique tongue and the safety tongue retract at the same time. The dial is used to unlock the safety tongue, so that the oblique tongue and the safety tongue can be retracted into the lock shell at the same time, and the door can be opened by simply turning the handle when opening the door, which is more convenient.

Description

Linkage structure of manual latch bolt and safety bolt

Technical Field

The invention relates to the field of door locks, in particular to a linkage structure of a manual latch bolt and a safety latch bolt.

Background

The lock body is one of the components of the lock, and the lock body has a plurality of types, such as a one-way lock body, a three-way lock body, a four-way lock body and the like. The lock is generally used on a security door and is responsible for basic security work of the security door, the lock cylinder controls the operation of the lock body, and the lock body is responsible for unlocking and locking the door and the window and plays an important role in security.

For example, the clutch lock body of the intelligent lock with publication number CN111042663A comprises a lock case, a lock body panel arranged on one side of the lock case and fixedly connected with the lock case, a main bolt assembly, a latch bolt assembly and a safety bolt assembly arranged on the lock case.

The safety bolt of the existing door lock is controlled by the safety shifting block independently, and can be unlocked and locked only by the safety shifting block.

Disclosure of Invention

The invention aims to solve the technical problem of providing a linkage structure of a manual latch bolt and a safety bolt, which is simple in structure and can control the unlocking of the safety bolt through a handle.

The technical scheme adopted by the invention for solving the technical problems is as follows: the linkage structure of the manual latch bolt and the safety bolt comprises a lock shell, the safety bolt, a safety shifting block, a push plate, a latch bolt and a shifting block synchronously rotating with a handle, wherein the shifting block is respectively linked with the latch bolt and the push plate, the push plate is linked with the safety shifting block, the safety shifting block is driven by external force to rotate to push the safety bolt to linearly move and extend out of the lock shell, a locking groove is formed in the tail part of the safety bolt, the safety shifting block falls into the locking groove to limit the safety bolt to linearly retreat, a linkage piece is arranged on the push plate and drives the safety shifting block to unidirectionally rotate and drive the safety bolt to retreat into the lock shell, and the latch bolt and the safety bolt retract simultaneously.

The invention further prefers to do the following: the poking component group pushes the latch bolt to retract into the lock shell, the poking component group simultaneously pushes the push plate to move, the push plate simultaneously drives the linkage piece to pull the safety poking head to rotate, and the safety poking head drives the safety bolt to retract into the lock shell.

The invention further prefers to do the following: the oblique tongue and the safety tongue move in the same direction, and the push plate and the safety tongue move vertically.

The invention further prefers to do the following: when the push plate moves to the limit position, the linkage piece pulls the safety shifting block to drive the safety tongue to be completely sunk into the lock shell.

The invention further prefers to do the following: the linkage part comprises two connecting rods and a shifting piece which are rotationally connected, the connecting rods are rotationally connected with the eccentric part of the safety shifting head, the shifting piece is rotationally connected with the lock shell, and the shifting piece is in contact connection or sliding connection with the push plate.

The invention further prefers to do the following: and a first switching point of the connecting rod rotatably connected with the safety shifting head, a second switching point of the connecting rod rotatably connected with the shifting piece, and a third switching point of the shifting piece rotatably connected with the lock shell can move to a horizontal line.

The invention further prefers to do the following: the connecting line included angle formed by a first switching point rotationally connected with the connecting rod and the safety shifting head, a second switching point rotationally connected with the connecting rod and the shifting piece, and a third switching point rotationally connected with the lock shell can be converted between an obtuse angle and an acute angle.

The invention further prefers to do the following: the safety tongue on be equipped with the draw-in groove, the safety shifting block locate in the draw-in groove and make the safety tongue remove through pushing away draw-in groove inner wall, the locking groove be located the both sides inner wall of draw-in groove, the safety shifting block with locking groove joint cooperation.

The invention further prefers to do the following: the number of the locking grooves is two, namely an upper locking groove and an unlocking groove, when the safety shifting head is clamped in the upper locking groove, the end part of the safety bolt extends out of the lock shell; when the safety shifting block is blocked in the unlocking groove, the safety tongue is contracted in the lock shell.

The invention further prefers to do the following: the linkage piece comprises a connecting rod and a shifting piece rotationally connected with the lock shell, and two ends of the connecting rod are respectively connected with the shifting piece and the safety shifting head in a shaft mode.

Compared with the prior art, the invention has the advantages that the safety lock comprises a lock shell, a safety tongue, a safety shifting block, a push plate, a latch bolt and a shifting block synchronously rotating with a handle, wherein the shifting block is respectively linked with the latch bolt and the push plate, the push plate is linked with the safety shifting block, the safety shifting block is driven by external force to rotate to push the safety tongue to linearly move and extend out of the lock shell, a locking groove is arranged at the tail part of the safety tongue, the safety shifting block falls into the locking groove to limit the safety tongue to linearly retreat, a linkage part is arranged on the push plate and drives the safety shifting block to unidirectionally rotate and drive the safety tongue to retreat into the lock shell, the latch bolt and the safety tongue to retreat simultaneously, the latch bolt and the safety tongue can be unlocked by the shifting block of the handle, the latch bolt and the safety tongue can simultaneously retreat into the lock shell, and the.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a partial schematic view of the locking safety tongue;

FIG. 2 is a partial structural view of the safety tongue when opened;

FIG. 3 is a schematic view of a lever handle;

FIG. 4 is a schematic structural diagram of a dial block;

FIG. 5 is a partial structural view of the safety shifting block;

fig. 6 is a partial schematic view of the structure of the linkage.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

The linkage structure of the manual latch bolt and the safety bolt comprises a lock shell 1, the safety bolt 2 is arranged in the lock shell 1, the safety bolt 2 is limited on the lock shell 1 to slide linearly through a safety shifting block 3, the safety shifting block 3 is connected to the lock shell 1 in a rotating mode, and the safety shifting block 3 controls locking and unlocking of the safety bolt 2.

Furthermore, a guide post 4 is arranged on the lock shell 1, a guide groove 5 is arranged on the safety tongue 2, and the safety tongue 2 is sleeved on the guide post 4 through the guide groove 5 to slide.

The safety tongue 2 is provided with a clamping groove 6, the bottom end of the safety shifting head 3 is rotatably connected with the lock shell 1, the upper end of the safety shifting head 3 is arranged in the clamping groove 6, the safety shifting head 3 pushes the inner wall of the clamping groove 6 to enable the safety tongue 2 to move left and right, the inner walls of two sides of the clamping groove 6 are provided with locking grooves, and the safety shifting head 3 is in clamping fit with the locking grooves.

Furthermore, the number of the locking grooves is two, namely an upper locking groove 7 and an unlocking groove 8, when the safety shifting block 3 is clamped in the upper locking groove 7, the end part of the safety bolt 2 extends out of the lock shell 1; when the safety shifting block 3 is blocked in the unlocking groove 8, the safety tongue 2 is contracted in the lock shell 1.

The lock shell 1 is internally provided with an oblique tongue 9, the oblique tongue 9 slides left and right on the lock shell 1, the lock shell 1 is provided with a mounting plate 10, the oblique tongue 9 is arranged on the mounting plate 10 in a penetrating way, and the oblique tongue 9 is provided with a clamping point 11.

The lock shell 1 is internally provided with a latch bolt shifting piece 12 which synchronously rotates with the handle, the latch bolt shifting piece 12 is linked with the latch bolt 9, and the latch bolt shifting piece 12 pushes a clamping point 11 arranged on the latch bolt 9 to ensure that the latch bolt 9 can slide rightwards.

The latch bolt 9 is sleeved with a second reset mechanism, further, the second reset mechanism is a reset spring 13, two ends of the reset spring 13 are propped against the front end of the latch bolt 9 and the mounting plate 10, and after the latch bolt shifting piece 12 is released, the latch bolt 9 can slide leftwards and return under the action of the reset spring 13.

The push plate 14 is arranged in the lock shell 1, the push plate 14 is limited to move along the direction vertical to the sliding direction of the safety tongue 2, and the push plate 14 is provided with a contact 22.

The handle shifting piece 15 is arranged in the lock shell 1 and is coaxial with the latch bolt shifting piece 12, the handle shifting piece 15 drives the push plate 14 to the maximum moving stroke, after the handle shifting piece 15 is released, the push plate 14 is reset by the first reset mechanism, and the push plate 14 drives the safety shifting head 3 to rotate in a single direction so as to control unlocking of the safety bolt 2.

The first reset mechanism is a reset tension spring 23, a spring mounting point 24 is arranged in the lock shell 1, and two ends of the reset tension spring 23 are respectively connected with the push plate 14 and the spring mounting point 24.

Furthermore, a shifting block 16 is arranged between the push plate 14 and the handle shifting piece 15, the handle shifting piece 15 is rotationally linked with the shifting block 16, and the shifting block 16 drives the push plate 14 to move.

The handle shifting piece 15 is provided with a first shifting point 17, the shifting block 16 is provided with a second shifting point 18, the first shifting point 17 can push the second shifting point 18 to enable the shifting block 16 to rotate anticlockwise, the shifting block 16 is also provided with a third shifting point 21, and the third shifting point 21 pushes the contact 22 to enable the push plate 14 to slide upwards.

When the handle is rotated, the latch bolt shifting piece 12 drives the latch bolt 9 to slide rightwards, and the handle shifting piece 15 rotates simultaneously to drive the push plate 14 to slide upwards.

Furthermore, a transmission part is arranged between the push plate 14 and the safety shifting block 3, the transmission part is respectively linked with the push plate 14 and the safety shifting block 3, the push plate 14 drives the safety shifting block 3 to rotate in one direction through the transmission part, and the safety shifting block 3 drives the safety tongue 2 to slide in one direction.

Furthermore, the transmission part comprises a connecting rod 18 and a shifting piece 19 which is rotatably connected with the lock shell 1, and two ends of the connecting rod 18 are respectively connected with the shifting piece 19 and the upper end 3 of the safety shifting block in a shaft mode.

A first switching point a of the connecting rod 18 rotatably connected with the safety shifting block 3, a second switching point b of the connecting rod 18 rotatably connected with the shifting piece 19, and a third switching point c of the shifting piece 19 rotatably connected with the lock shell 1 can move to a horizontal line.

As shown in fig. 6, a connecting line included angle α formed by a first transfer point a of the connecting rod 18 rotatably connected with the safety shifting block 3, a second transfer point b of the connecting rod 18 rotatably connected with the shifting piece 19, and a third transfer point c of the shifting piece 19 rotatably connected with the lock shell 1 can be switched between an obtuse angle and an acute angle.

The bottom end of the push plate 14 is provided with a limiting plate 20, the upper end of the poking piece 19 is in contact with the limiting plate 20, the push plate 14 slides upwards to drive the poking piece to rotate anticlockwise, the poking piece 19 drives the connecting rod 18 to move rightwards, the connecting rod 18 pulls the safety poking head 3 to rotate clockwise, and the safety poking head 3 pushes the inner wall of the clamping groove 6 to enable the safety tongue 2 to slide rightwards.

When the latch bolt 9 and the safety bolt 2 are both in a locked state, the handle is rotated to unlock, the latch bolt shifting piece 12 is rotated to push the latch bolt 9 to enable the latch bolt 9 to be contracted in the lock shell 1, the handle shifting piece 15 is rotated simultaneously to drive the push plate 14 to move, and the push plate 14 drives the safety shifting head 3 to rotate in a single direction to enable the safety bolt 2 to be contracted in the lock shell 1.

As shown in fig. 1, the safety catch 2 is in a locked state, and the safety dial 3 is locked in the upper lock groove 7.

As shown in fig. 5, a partial enlarged view of the safety dial 3 clamped in the upper locking groove 7 is shown, in which a perpendicular line between a center point of a rotating shaft of the safety dial 3 and a contact point of the upper locking groove 7 of the safety dial 3 is L1, the perpendicular line L1 is a shortest connecting line between the safety dial 3 and the upper locking groove 7, a connecting line L2 is provided between the safety dial 3 and a toggle part of the safety dial 3 near the upper locking groove 7, and since L1 is the shortest connecting line and the length of L2 is greater than that of L1, the safety dial 3 can be clamped in the upper locking groove 7 without backing back, the safety dial 3 can be pushed out from the upper locking groove 7 only by rotating the safety dial 3 by external force or rotating the safety dial 3 by a linkage, and similarly, the safety dial 3 is also arranged in the unlocking groove 8.

As shown in fig. 2, when the handle is rotated to open the door, the handle shifting piece 15 rotates clockwise, the first shifting point 17 pushes the second shifting point 18 to rotate the shifting block 16, the third shifting point 21 on the shifting block 16 pushes the contact 22 on the pushing plate 14 to make the pushing plate 14 slide upwards, the limiting plate 20 pushes the shifting piece 19 to make the shifting piece 19 rotate anticlockwise, the shifting piece 19 pulls the safety shifting block 3 to rotate clockwise through the connecting rod 18, the safety shifting block 3 slides out from the upper locking groove 7, and the safety tongue 2 can not move when sliding into the unlocking groove 8 along the inner wall of the clamping groove 6 all the time, so that the safety tongue 2 is contracted in the lock shell 1, namely, the safety bolt 2 is in an unlocking state, simultaneously, the latch bolt shifting piece 12 also rotates clockwise, the latch bolt shifting piece 12 pushes the latch bolt 9 to retract into the lock shell 1, thus realizing the unlocking of the safety bolt 2 by rotating the handle, simultaneously, at the same time as the safety tongue 2 is retracted into the lock housing 1, the latch tongue 9 can also be retracted into the lock housing 1.

When the handle is released, the latch bolt 9 is reset under the action of the reset spring 13, the push plate 14 is reset under the action of the reset tension spring 23, the safety bolt 2 keeps an unlocked state and cannot be reset, and the safety bolt 2 can only be locked through the safety shifting block 3.

The existing safety tongue 2 can only be unlocked and locked through the safety shifting block 3, the structure can unlock the safety tongue 2 through the handle, and the situation that the safety tongue 2 cannot be opened when the safety shifting block 3 fails is avoided.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are used for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The present invention provides a linkage structure of a manual latch bolt and a safety latch bolt, and a specific example is applied to illustrate the principle and the implementation of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The linkage structure of the manual oblique tongue and the safety tongue is characterized in that it comprises a lock shell, a safety tongue, a safety dial, a push plate, an oblique tongue, and a dial group that rotates synchronously with the handle, and the dial group is respectively connected with the oblique tongue and the dial. The push plate is linked, the push plate is linked with the insurance dial, the external force drives the insurance dial to rotate, pushes the insurance tongue to move in a straight line and stretches out of the lock shell. The safety tongue retracts in a straight line, and the push plate is provided with a linkage, which drives the safety dial to rotate in one direction and drives the safety tongue to retract into the lock shell, and the oblique tongue and the safety tongue retract simultaneously.

2. The linkage structure of the manual oblique tongue and the safety tongue according to claim 1, characterized in that the dial group pushes the oblique tongue to retract into the lock shell, the dial group pushes the push plate to move at the same time, and the push plate simultaneously The linkage is driven to pull the safety dial to rotate, and the safety dial drives the safety tongue to retract into the lock shell.

3 . The linkage structure of the manual oblique tongue and the safety tongue according to claim 1 , wherein the movement direction of the oblique tongue and the safety tongue is consistent, and the push plate moves vertically with the movement direction of the safety tongue. 4 .

4 . The linkage structure of the manual oblique tongue and the safety tongue according to claim 1 , wherein when the push plate moves to the limit position, the linkage pulls the safety toggle to drive the safety tongue to completely sink into the lock housing. 5 .

5. The linkage structure of the manual oblique tongue and the safety tongue according to claim 1, characterized in that the linkage comprises two rotatably connected connecting rods and a paddle, the link is rotatably connected with the eccentric part of the safety dial, and the paddles are rotatably connected. It is rotatably connected with the lock case, and the paddle is in contact or sliding connection with the push plate.

6 . The linkage structure of the manual oblique tongue and the safety tongue according to claim 1 , wherein the first transfer point of the connecting rod and the safety dial is rotatably connected, and the second turning point of the connecting rod and the pick piece is rotatably connected. 7 . The contact point, the paddle, and the third transfer point rotatably connected with the lock shell can move to a horizontal line.

7 . The linkage structure of the manual oblique tongue and the safety tongue according to claim 1 , wherein the first transfer point of the connecting rod and the safety dial is rotatably connected, and the second turning point of the connecting rod and the dial is rotatably connected. 8 . The included angle of the connecting line formed by the contact point, the paddle and the third transfer point rotatably connected to the lock shell can be converted between an obtuse angle and an acute angle.

8 . The linkage structure of the manual oblique tongue and the safety tongue according to claim 1 , wherein the safety tongue is provided with a card slot, and the safety dial is arranged in the card slot and pushes the card slot by pushing the card slot. 9 . The inner wall makes the safety tongue move, the locking groove is located on the inner walls on both sides of the locking groove, and the safety dial is engaged with the locking groove.

9. The linkage structure of the manual oblique tongue and the safety tongue according to claim 8, wherein the number of the locking grooves is two, which are respectively the locking groove and the unlocking groove, and the safety dial is stuck in the When locking the slot, the end of the safety tongue protrudes from the lock shell; when the safety dial is stuck in the unlocking slot, the safety tongue shrinks in the lock shell.

10. The linkage structure of the manual oblique tongue and the safety tongue according to claim 1, wherein the linkage member comprises a connecting rod and a paddle rotatably connected with the lock shell, and the two ends of the connecting rod are respectively connected to The paddle and the safety dial are pivoted.