CN111894349A

CN111894349A - Lock set

Info

Publication number: CN111894349A
Application number: CN202010762838.XA
Authority: CN
Inventors: 徐志克
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-11-06
Also published as: WO2022021635A1

Abstract

The invention relates to a lockset, which comprises a front handle device, a rear handle device, a lock body, a lock cylinder device, a lock tongue and a square core, wherein the lock tongue and the lock cylinder device are arranged in the lock body; when the rear handle is lifted up, the front locking plate cannot act, so that the front handle cannot rotate, and the back locking is realized; when the rear handle is pressed down, the front handle and the rear handle can rotate freely and drive the lock tongue to move, so that unlocking is realized.

Description

Lock set

Technical Field

The invention relates to a lockset.

Background

The current tool to lock for glass door generally trompil on glass, and the tool to lock presss from both sides tightly on glass, and hole, lock core are passed to square core, and preceding handle is connected to square core one end, and the back handle is connected to the square core other end, but this kind of mode at glass trompil leads to glass's intensity to reduce, and glass is broken easily.

Also appear one kind in the market and need not trompil on glass, press from both sides the tool to lock tight on glass, can accomplish the tool to lock installation, easy operation avoids the glass trompil, but the handle of this tool to lock can't realize lifting the contrary lock, pushes down unblock function, and the function singleness, the handle is not hard up easily moreover, and the practicality is relatively poor.

Disclosure of Invention

The invention aims to provide a lockset which is convenient for a user to reversely lock and unlock.

The purpose of the invention is realized as follows:

a lockset comprises a front handle device, a rear handle device, a lock body, a lock cylinder device, a lock tongue and a square core, wherein the lock tongue and the lock cylinder device are arranged in the lock body;

when the rear handle is lifted upwards, the rear handle drives the rear locking plate to rotate, the rear locking plate drives the limiting plate to be far away from the limiting rod, the limiting rod moves towards the front locking plate and locks the action of the front locking plate, and the front locking plate cannot act, so that the front handle cannot rotate, and the back locking is realized;

when the back handle pushed down, the back handle drove the back locking plate and rotates, and the back locking plate drove the gag lever post action and keeps away from preceding locking plate, and the gag lever post action is followed to spacing piece, and when the preceding locking plate was kept away from completely to the gag lever post, the action of spacing piece locking gag lever post just makes the gag lever post maintain keep away from preceding locking plate, and preceding handle and back handle all can the free rotation and drive the spring bolt action this moment, realize the unblock.

When the back handle was lifted, the back handle drove the back locking plate rotation, and the back locking plate promotes the locking plate before the gag lever post rotation and locking, because preceding locking plate is locked, preceding locking plate is unable rotatory, and the user is unable to rotate preceding handle, leads to the unable promotion of spring bolt, realizes the anti-lock, and the operation is very simple.

When the back handle pushed down, the back handle drove the back locking plate rotation, and the back locking plate promotes the stopper and rotates and keep away from preceding locking plate, and preceding locking plate and back locking plate all can freely rotate, thereby the user can drive the rotatory spring bolt that promotes of preceding locking plate through rotatory preceding handle and remove, thereby the user can drive the rotatory spring bolt that promotes of back locking plate through rotatory back handle and remove, realizes the unblock, and the operation is very simple.

The aim of the invention can also be solved by the following technical measures:

as a more specific scheme, the push arm is arranged on the lock body and comprises a front push arm, a rear push arm and a first linkage piece, the front push arm is positioned on the front end surface of the lock body and is close to the lock tongue, the rear push arm is positioned on the rear end surface of the lock body and is close to the lock tongue, the front push arm and the rear push arm are connected through the first linkage piece to realize linkage of the front push arm and the rear push arm, and the front push arm and the rear push arm jointly push the lock tongue to extend out of the lock body;

the utility model discloses a lock body, including lock body, gag lever post, preceding gag lever post, back gag lever post, gag lever post and second interlock spare, the gag lever post sets up on the lock body, and the gag lever post is located the preceding terminal surface of lock body including preceding gag lever post, back gag lever post and second interlock spare, preceding gag lever post and back gag lever post pass through the second interlock spare to be connected, and gag lever post and back gag lever post interlock before realizing.

The front push arm and the rear push arm are connected together through the first linkage piece, the front push arm pushes the spring bolt to move, the rear push arm also pushes the spring bolt to move, the spring bolt is stressed more uniformly, the spring bolt is prevented from overturning, and the spring bolt is enabled to move more smoothly.

The front limiting rod and the rear limiting rod are connected together through the second linkage piece, when the rear limiting rod is pushed, the front limiting rod moves along with the rear limiting rod, the rear handle moves to control the front limiting rod to lock or unlock the front locking plate, and the rear handle moves to realize the operation of back locking or unlocking.

As a more specific scheme, a first spring is arranged between the front limiting rod and the front end face of the lock body, one end of the first spring is connected with the front limiting rod, the other end of the first spring is connected with the front end face of the lock body, and the first spring forms a reset mechanism of the front limiting rod; and a second spring is arranged between the rear limiting rod and the rear end face of the lock body, one end of the second spring is connected with the rear limiting rod, the other end of the second spring is connected with the rear end face of the lock body, and the second spring forms a resetting mechanism of the rear limiting rod.

As a more specific scheme, the limiting piece is rotatably arranged on the rear end face of the lock body, a third spring is arranged between the limiting piece and the rear end face of the lock body, one end of the third spring is connected with the limiting piece, the other end of the third spring is connected with the rear end face of the lock body, and the third spring forms a reset mechanism of the limiting piece.

As a more specific scheme, preceding locking plate is provided with preceding pushing arm pushing portion, and preceding locking plate sets up the preceding terminal surface at the lock body with the rotation mode, and when preceding locking plate was rotatory, preceding pushing arm pushing portion promoted the preceding pushing arm and removes, back locking plate is provided with back pushing arm pushing portion, and back locking plate sets up the rear end face at the lock body with the rotation mode, and when back locking plate was rotatory, back pushing arm pushing portion promoted back pushing arm and removes.

Preceding locking plate is provided with preceding pushing arm portion of carrying out, and when current locking plate was rotatory, preceding pushing arm portion of carrying out promotes the preceding pushing arm of carrying out and removes to drive the spring bolt and remove, back locking plate is provided with back pushing arm portion of carrying out, and when back locking plate was rotatory, back pushing arm portion of carrying out promoted back pushing arm and removes, thereby drive the spring bolt and remove easy operation.

As a more specific scheme, the front lock plate is provided with a front lock plate rotation limiting cavity, a front limiting bulge is arranged at the position of the front end surface of the lock body, which corresponds to the front lock plate rotation limiting cavity, the front limiting bulge is inserted into the front lock plate rotation limiting cavity, and the front limiting bulge limits the rotation angle of the front lock plate;

the back locking plate is opened there is the rotatory spacing chamber of back locking plate, and the rear end face of lock body corresponds the rotatory spacing chamber position of back locking plate and is equipped with the spacing arch in back, and the protruding rotatory spacing intracavity of back locking plate that inserts back spacing arch, the rotation angle of locking plate behind the protruding restriction of back spacing.

The rotatory spacing intracavity of locking plate before preceding spacing arch inserts, the rotation angle of locking plate before the protruding restriction of preceding spacing is avoided preceding handle rotation angle great, the spacing intracavity of locking plate rotation after the protruding insertion of back spacing, the rotation angle of locking plate after the protruding restriction of back spacing, the rotation angle of avoiding back locking plate is great, and the user of being convenient for is anti-locked or the unblock operation is faster.

As more specific scheme, preceding locking plate is opened there is spacing draw-in groove, preceding spacing pole is provided with spacing inserted sheet, and locking plate before spacing inserted sheet inserts spacing draw-in groove, and preceding locking plate can't rotate.

The front locking plate is locked by inserting the limiting insertion pieces into the limiting clamping grooves, the front locking plate cannot rotate, the front handle cannot rotate, reverse locking is achieved, and the principle is simple.

As a more specific scheme, the rear locking plate is provided with a rear limiting rod pushing portion, the rear limiting rod is provided with a pushing convex portion, when the rear locking plate rotates, the rear limiting rod pushing portion pushes the pushing convex portion to move, the rear limiting rod is made to rotate and keep away from the rear locking plate, and when the rear locking plate is completely kept away from the limiting rod, the rear limiting rod clamps the limiting rod and locks the current action of the limiting rod.

As a more specific scheme, the rear locking plate is provided with a limiting plate pushing portion, and when the rear locking plate rotates, the limiting plate pushing portion pushes the limiting plate to act, so that the limiting plate and the rear limiting rod are clamped or separated from each other.

As a more specific scheme, the rear handle device further comprises a handle seat, a rotating seat, a coil spring, an outer ring and a fourth spring, wherein the handle seat is provided with an accommodating cavity, the accommodating cavity is provided with a limiting cavity, the outer ring is provided with a limiting part, the outer ring is arranged in the accommodating cavity in a rotating mode, the limiting part extends into the limiting cavity, and the limiting cavity limits the extending depth of the limiting part, so that the rotating angle of the outer ring is limited;

the fourth spring is arranged in the limiting cavity, one end of the fourth spring is abutted against the inner wall of the limiting cavity, the other end of the fourth spring is abutted against the limiting part, and the fourth spring forms a reset mechanism of the outer ring;

the outer ring surface is provided with an outer ring push block and a stop block, a sliding groove is formed between the outer ring push block and the stop block, the rotating seat is provided with a sliding block, the rotating seat extends into the inner cavity of the outer ring and is connected with a rear handle, and the sliding block extends into the sliding groove and abuts against the outer ring push block;

the coil spring is sleeved on the rotary seat, one end of the coil spring is connected with the outer ring, the other end of the coil spring is connected with the rotary seat, and the coil spring forms a resetting mechanism of the rotary seat;

when the rear handle is lifted, the rotating seat rotates, the sliding block drives the outer ring to rotate by pushing the outer ring pushing block to move, the limiting part extends into the limiting cavity, the limiting cavity limits the extending depth of the limiting part, and the rotating angle of the rotating seat is limited, so that the lifting angle of the rear handle is limited;

when the rear handle is pressed down, the rotating seat rotates, the sliding block slides along the limiting groove, the stop block limits the sliding distance of the sliding block and the rotating angle of the rotating seat, and therefore the pressing angle of the rear handle is limited.

As a more specific scheme, the rear limiting rod is provided with a bayonet, the limiting piece is provided with a convex angle, the convex angle is inserted into the bayonet, the limiting piece and the rear limiting rod are clamped mutually, and the limiting piece locks the current action of the rear limiting rod. The limiting piece locks the current action of the rear limiting rod, and the rear limiting rod is prevented from resetting, so that the unlocking state is maintained.

The invention has the following beneficial effects:

according to the invention, when the rear handle is lifted upwards, the rear handle drives the rear lock plate to rotate, the rear lock plate pushes the limiting rod to rotate and lock the front lock plate, and the front lock plate is locked and cannot rotate, so that the user cannot rotate the front handle, the lock tongue cannot be pushed, the back locking is realized, and the operation is very simple.

According to the invention, when the rear handle is pressed down, the rear handle drives the rear locking plate to rotate, the rear locking plate pushes the limiting rod to rotate to be far away from the front locking plate, the front locking plate and the rear locking plate can rotate freely, a user can drive the front locking plate to rotate by rotating the front handle so as to push the locking plate to move, the user can drive the rear locking plate to rotate by rotating the rear handle so as to push the locking plate to move, unlocking is realized, and the operation is very simple.

According to the invention, the front push arm and the rear push arm are connected together through the first linkage part, the front push arm pushes the spring bolt to move, and the rear push arm also pushes the spring bolt to move, so that the spring bolt is stressed more uniformly, the spring bolt is prevented from overturning, and the spring bolt moves more smoothly.

According to the invention, the front limiting rod and the rear limiting rod are connected together through the second linkage part, when the rear limiting rod is pushed, the front limiting rod acts along with the rear limiting rod, the rear handle acts to control the front limiting rod to lock or unlock the front lock plate, and the rear handle acts to realize the back locking or unlocking operation.

Drawings

FIG. 1 is a schematic view of a lockset.

Figure 2 is a schematic view of the front handle arrangement, the rear handle arrangement and the lock body of the lock, shown separated.

Fig. 3 is a schematic view of the rear handle arrangement of the lock (rear handle lift up schematic view).

Fig. 4 is a rear handle arrangement (rear handle push down) of the lock.

Fig. 5 is an exploded view of the rear handle assembly of the lock.

Fig. 6 is a schematic view of the lock in the unlocked state (rear lock plate orientation).

Fig. 7 is a schematic view of the lock in the unlocked state (front lock plate orientation).

Fig. 8 is a schematic view of the normal state of the lock (rear lock plate orientation).

Fig. 9 is a schematic view of the normal state of the lock (front lock plate orientation).

Fig. 10 is a schematic view of the unlocked state of the lock (rear lock plate orientation).

Fig. 11 is a schematic view of the unlocked state of the lock (front lock plate orientation).

Fig. 12 is a sectional view a-a of fig. 8.

Fig. 13 is a sectional view taken along line B-B of fig. 8.

Fig. 14 is a schematic view of the rear limiting rod, limiting piece and rear lock plate of the lock in a separated state.

Figure 15 is an assembly schematic of the lock body and cylinder assembly of the lock.

Fig. 16 is an assembly diagram of the lock tongue, the push arm, the front lock plate, the rear lock plate, the limiting rod and the limiting plate of the lock.

Detailed Description

The invention is further described with reference to the following figures and examples:

embodiment, as shown in fig. 1 to 16, a lock includes a front handle device 17, a rear handle device 1, a lock body 2, a lock cylinder device, a lock tongue 3, and a square core 9, where the rear handle device 1 includes a rear handle 11, a handle base 12, a rotary base 13, a coil spring 14, an outer ring 15, and a fourth spring 16, the handle base 12 is provided with an accommodating cavity 121, and the upper end and the lower end of the accommodating cavity 121 are both provided with a limiting cavity 122.

The upper end and the lower end of the outer ring 15 are both provided with a limiting part 151, the surface of the outer ring 15 is provided with an outer ring pushing block 152 and a stop block 153, a sliding groove 154 is formed between the outer ring pushing block 152 and the stop block 153, and the inner wall of the outer ring 15 is provided with a coil spring bayonet 155.

The outer ring 15 is rotatably disposed in the accommodating cavity 121, the limiting portion 151 extends into the limiting cavity 122, the limiting cavity 122 limits the extending depth of the limiting portion 151, so as to control the rotation angle of the outer ring 15, the fourth spring 16 is disposed in the limiting cavity 122, one end of the fourth spring 16 abuts against the limiting portion 151, the other end of the fourth spring 16 abuts against the inner wall of the limiting cavity 122, and the fourth spring 16 forms a reset mechanism of the outer ring 15.

The rotary seat 13 is provided with a sliding block 131, the rotary seat 13 extends into the inner cavity of the outer ring 15, the sliding block 131 extends into a sliding groove 154 and abuts against an outer ring pushing block 152, one end of the rotary seat 13 penetrates through the accommodating cavity 121 to be connected with the rear handle 11, the other end of the rotary seat 13 is provided with a square core socket 133 convenient for connecting a square core 9, the rotary seat 13 is provided with a coil spring clamping groove 132, a coil spring 14 is sleeved on the rotary seat 13, one end of the coil spring 14 is connected with the coil spring clamping groove 132, the other end of the coil spring 14 is connected with the coil spring clamping groove 155, and the coil spring 14 forms a.

The front handle device 17 comprises a front handle 171, a handle base 12, a rotary base 13, a coil spring 14, an outer ring 15 and a fourth spring 16, and the structure of the front handle 171 device 17 is the same as that of the rear handle 11 device 1, and therefore, the description is omitted.

The lock body 2 comprises a front lock plate 21, a rear lock plate 22 and an intermediate lock plate 23, wherein a lock tongue hole 231 convenient for the magnet 34 to stretch is formed in the intermediate lock plate 23, one end of the intermediate lock plate 23 is connected with the front lock plate 21, the other end of the intermediate lock plate 23 is connected with the rear lock plate 22 to form the U-shaped lock body 2, a door plate clamping groove 24 is formed between the front lock plate 21 and the rear lock plate 22, and a first shaft hole 25 and a second shaft hole 26 are formed in the lock body 2.

The bolt 3 includes preceding push pedal 31, back push pedal 32, intermediate junction board 33 and magnet 34, magnet 34 sets up on intermediate junction board 33, and intermediate junction board 33 one end is connected preceding push pedal 31, and the push pedal 32 forms the U-shaped bolt after the intermediate junction board 33 other end is connected.

The spring bolt 3 sets up and is close to spring bolt mouth 231 in lock body 2, preceding push pedal 31 stretches out towards jam plate 21 direction, be provided with fifth spring 35 between preceding push pedal 31 and the preceding jam plate 21, push pedal 31 before fifth spring 35 one end is connected, preceding jam plate 21 is connected to the fifth spring 35 other end, back push pedal 32 stretches out towards back jam plate 22 direction, be provided with sixth spring 36 between back push pedal 32 and the back jam plate 22, back push pedal 32 is connected to sixth spring 36 one end, back jam plate 22 is connected to the sixth spring 36 other end, fifth spring 35 and sixth spring 36 constitute the canceling release mechanical system of spring bolt 3 jointly.

The lock cylinder device comprises a push arm 4 for driving the lock tongue 3 to move, a front lock plate 5 for driving the push arm 4 to move, a rear lock plate 6 for driving the push arm 4 to move, a limiting rod 7 for locking the front lock plate 5 to move and a limiting piece 8 for locking the limiting rod 7 to move.

The push arm 4 comprises a front push arm 41, a rear push arm 42 and a first linkage part, wherein the front push arm 41 and the rear push arm 42 are both L-shaped push arms, the front push arm 41 is rotatably arranged on the front lock plate 21 and close to the front push plate 31, the rear push arm 42 is rotatably arranged on the rear lock plate 22 and close to the rear push plate 32, the first linkage part is a first rotating shaft 43, the first rotating shaft 43 is arranged in the first shaft hole 25, a front port of one end of the first rotating shaft 43, extending out of the first shaft hole 25, is connected with the front push arm 41, a rear port of the other end of the first rotating shaft 43, extending out of the first shaft hole 25, is connected with the rear push arm 42 to form the push arm 4, and the push arm 4 rotates by taking the first shaft hole 25 as a rotation center, so that the front push arm 41 and the rear push arm 42.

The limiting rod 7 comprises a front limiting rod 71, a rear limiting rod 72 and a second linkage piece, one end of the front limiting rod 71 is arranged on the front lock plate 21 in a rotating mode, the other end of the front limiting rod 71 is provided with a limiting insertion piece 711, a first spring 74 is arranged between the front limiting rod 71 and the front lock plate 21, one end of the first spring 74 is connected with the front limiting rod 71, the other end of the first spring 74 is connected with the front lock plate 21, and the first spring 74 forms a reset mechanism of the front limiting rod 71.

One end of the rear limiting rod 72 is rotatably arranged on the rear lock plate 22, the other end of the rear limiting rod 72 is provided with a bayonet 721 and a pushing convex part 722, a second spring 75 is arranged between the rear limiting rod 72 and the rear lock plate 22, one end of the second spring 75 is connected with the rear limiting rod 72, the other end of the second spring 75 is connected with the rear lock plate 22, and the second spring 75 forms a reset mechanism of the rear limiting rod 72.

The second linkage part is a second rotating shaft 73, the second rotating shaft 73 is arranged in the second shaft hole 26, a front port of one end of the second rotating shaft 73, extending out of the second shaft hole 26, is connected with the front limiting rod 71, a rear port of the other end of the second rotating shaft 73, extending out of the second shaft hole 26, is connected with the rear limiting rod 72 to form a limiting rod 7, and the limiting rod 7 rotates by taking the second shaft hole 26 as a rotation center, so that the front limiting rod 71 is linked with the rear limiting rod 72.

The front lock plate 21 is provided with a front limiting opening 211, one end part of the front limiting rod 71 extends into the front limiting opening 211, the front limiting opening 211 limits the moving range of the front limiting rod 71, the rear lock plate 22 is provided with a rear limiting opening 221, one end part of the rear limiting rod 72 extends into the rear limiting opening 221, and the rear limiting opening 221 limits the moving range of the rear limiting rod 72.

The limiting sheet 8 is provided with a convex angle 81, the limiting sheet 8 is arranged on the back lock plate 22 in a rotating mode, a third spring 82 is arranged between the limiting sheet 8 and the back lock plate 22, one end of the third spring 82 is connected with the limiting sheet 8, the other end of the third spring 82 is connected with the back lock plate 22, and the third spring 82 forms a reset mechanism of the limiting sheet 8.

Preceding locking plate 5 is opened and is had rotatory spacing chamber 51 of preceding locking plate, spacing draw-in groove 52 and be provided with preceding pushing arm pushing portion 53, and preceding locking plate 5 sets up in the front on jam plate 21 with the rotation mode, and the position that the rotatory spacing chamber 51 of locking plate was equipped with preceding spacing arch 212 before preceding jam plate 21 corresponds, and in preceding spacing arch 212 inserted the rotatory spacing chamber 51 of locking plate, the rotation angle of locking plate 5 before the protruding 212 restriction of preceding spacing, and preceding pushing arm pushing portion 53 is close to preceding pushing arm 41 simultaneously.

The back locking plate 6 is opened has the rotatory spacing chamber of back locking plate 61 and is provided with back limiting lever and carries out portion 62, spacing piece carries out portion 63 and back arm of pushing away and carries out portion 64, back locking plate 6 sets up on back locking plate 22 with the rotation mode, back locking plate 22 corresponds the rotatory spacing chamber 61 position of back locking plate and is equipped with back spacing arch 222, back spacing arch 222 inserts the rotatory spacing chamber of back locking plate 61 in, the rotation angle of locking plate 6 behind the protruding 222 restriction of back spacing, back arm of pushing away carries out portion 64 and is close to back arm of pushing away 42 simultaneously.

The front handle 171 device 17 is located beside the front lock plate 21, one end of the square core 9 is inserted into the square core insertion opening 133 of the rotary seat 13 of the front handle 171 device 17 and is clamped, the other end of the square core 9 is inserted into the front lock plate 5 and is clamped, and the front handle 171 drives the front lock plate 5 to rotate through the rotary seat 13 and the square core 9.

The rear handle 11 device 1 is positioned beside the rear lock plate 22, one end of the square core 9 is inserted into the square core insertion opening 133 of the rotary seat 13 of the rear handle 11 device 1 and is clamped, the other end of the square core 9 is inserted into the rear lock plate 6 and is clamped, and the rear handle 11 drives the rear lock plate 6 to rotate through the rotary seat 13 and the square core 9.

The working principle is as follows:

and (3) normal state:

in spacing piece 8's salient angle 81 inserted the bayonet 721 of back spacing pole 72, spacing piece 8 and back spacing pole 72 chucking each other, back spacing pole 72 compression second spring 75 and keep away from back locking plate 6, back locking plate 6 can the free rotation, back spacing arch 222 is located the central point of back locking plate rotation spacing chamber 61 and puts, and back handle 11 can the free choice at this moment upwards lift or push down.

The limiting insertion piece 711 is far away from the limiting clamping groove 52, the front limiting rod 71 releases the locking of the front locking piece 5, the front locking piece 5 can rotate freely, the front limiting protrusion 212 is located at the center of the front locking piece rotation limiting cavity 51, and at the moment, the front handle 171 can freely select upward lifting or downward pressing.

The back locking state:

back handle 11 is up lifted, back handle 11 drives roating seat 13 rotatory, slider 131 is through promoting outer loop ejector pad 152 to it is rotatory to drive outer loop 15, spacing portion 151 stretches into extrusion fourth spring 16 in the spacing chamber 122, spacing chamber 122 restriction spacing portion 151 stretches into the degree of depth in spacing chamber 122, thereby the angle that back handle 11 lifted is limited, the user loosens back handle 11, fourth spring 16 resets and promotes outer loop 15, make back handle 11 resume to initial position, prepare for next action.

Because back handle 11 is up lifted, square core 9 drives back locking plate 6 rotatory, and back locking plate 6 rotation in-process, spacing piece pushing portion 63 promotes spacing piece 8 rotatory, and spacing piece 8 and back spacing pole 72 separate, and second spring 75 resets, and second spring 75 drives back spacing pole 72 and pushes down, and back spacing pole 72 supports and leans on back spacing pole pushing portion 62.

Because preceding gag lever post 71 and back gag lever post 72 are linked, consequently preceding gag lever post 71 is pressed down along with back gag lever post 72, and first spring 74 resets simultaneously, and first spring 74 further promotes preceding gag lever post 71 and presses down, makes spacing inserted sheet 711 insert in spacing draw-in groove 52, realizes preceding locking plate 5 of gag lever post 71 locking, and preceding locking plate 5 can't rotate, and the user can't rotate preceding handle 171 yet, realizes the counter lock.

An unlocking state:

the rear handle 11 is pressed downwards, the rear handle 11 drives the rotary base 13 to rotate, the sliding block 131 slides along the sliding groove 154 until the sliding block 131 abuts against the stop 153, the stop 153 limits the sliding distance of the sliding block 131, so that the pressing angle of the rear handle 11 is limited, a user releases the rear handle 11, the coil spring 14 is reset, and the coil spring 14 pushes the rotary base 13 to rotate, so that the rear handle 11 is restored to the initial position to prepare for the next action.

Because back handle 11 is down pressed, square core 9 drives back locking plate 6 and rotates, and back locking plate 6 rotation in-process, back limiting rod 72 is up going after the promotion of back limiting rod pushing part 62, and back limiting rod 72 compresses second spring 75 and keeps away from back locking plate 6, and in the bayonet 721 of limiting rod 72 was inserted to protruding angle 81 of spacing piece 8 back limiting rod 72, spacing piece 8 supported and leaned on spacing piece pushing part 63, the action of limiting rod 72 behind the locking of spacing piece 8.

Because the front limiting rod 71 and the rear limiting rod 72 are linked, the front limiting rod 71 ascends along with the rear limiting rod 72 and compresses the first spring 74, so that the limiting insertion piece 711 is far away from the limiting clamping groove 52, the front limiting rod 71 releases the locking of the front locking piece 5, and the front locking piece 5 can rotate freely.

When the user rotates the front handle 171, the front handle 171 drives the front lock plate 5 to rotate through the rotary seat 13 and the square core 9, and when the front push arm pushing portion 53 of the front lock plate 5 pushes the front push arm 41, the front push arm 41 and the rear push arm 42 are linked, and the front push arm 41 and the rear push arm 42 push the lock tongue 3 together to move.

The user rotates the rear handle 11, the rear handle 11 drives the rear lock plate 6 to rotate through the rotary seat 13 and the square core 9, when the rear push arm 42 pushing part of the rear push arm 42 of the rear lock plate 6 pushes the rear push arm 42, the front push arm 41 and the rear push arm 42 are linked, and the front push arm 41 and the rear push arm 42 push the lock tongue 3 to move together.

Claims

1. The utility model provides a lockset, includes preceding handle device, back handle device, lock body, lock core device, spring bolt and square core, spring bolt and lock core device set up in the lock body, preceding handle device includes preceding handle, and preceding handle setting is in lock body one side, and back handle device includes back handle, and back handle sets up at the lock body opposite side, its characterized in that: the lock core device comprises a push arm for driving the lock tongue to act, a front lock plate for driving the push arm to act, a rear lock plate for driving the push arm to act, a limiting rod for locking the action of the front lock plate and a limiting plate for locking the action of the limiting rod, the front handle drives the front lock plate to rotate through a square core, and the rear handle drives the rear lock plate to rotate through the square core;

2. The lock according to claim 1, wherein: the push arm is arranged on the lock body and comprises a front push arm, a rear push arm and a first linkage piece, the front push arm is positioned on the front end face of the lock body and is close to the lock tongue, the rear push arm is positioned on the rear end face of the lock body and is close to the lock tongue, the front push arm and the rear push arm are connected through the first linkage piece, linkage of the front push arm and the rear push arm is realized, and the front push arm and the rear push arm jointly push the lock tongue to extend out of the lock body;

3. The lock according to claim 2, wherein: a first spring is arranged between the front limiting rod and the front end face of the lock body, one end of the first spring is connected with the front limiting rod, the other end of the first spring is connected with the front end face of the lock body, and the first spring forms a reset mechanism of the front limiting rod; and a second spring is arranged between the rear limiting rod and the rear end face of the lock body, one end of the second spring is connected with the rear limiting rod, the other end of the second spring is connected with the rear end face of the lock body, and the second spring forms a resetting mechanism of the rear limiting rod.

4. The lock according to claim 2, wherein: the limiting piece is arranged on the rear end face of the lock body in a rotating mode, a third spring is arranged between the limiting piece and the rear end face of the lock body, one end of the third spring is connected with the limiting piece, the other end of the third spring is connected with the rear end face of the lock body, and the third spring forms a reset mechanism of the limiting piece.

5. The lock according to claim 2, wherein: preceding locking plate is provided with preceding pushing arm portion of carrying out, and preceding locking plate sets up the preceding terminal surface at the lock body with the rotation mode, and when preceding locking plate was rotatory, the pushing arm removal before the promotion of preceding pushing arm portion of carrying out, back locking plate is provided with back pushing arm portion of carrying out, and back locking plate sets up the rear end face at the lock body with the rotation mode, and when back locking plate was rotatory, the back pushing arm portion of carrying out promotes the back and carries out the arm removal.

6. The lock according to claim 5, wherein: the front lock plate is provided with a front lock plate rotation limiting cavity, the front end surface of the lock body is provided with a front limiting bulge corresponding to the position of the front lock plate rotation limiting cavity, the front limiting bulge is inserted into the front lock plate rotation limiting cavity, and the front limiting bulge limits the rotation angle of the front lock plate;

7. The lock according to claim 5, wherein: preceding locking plate is opened there is spacing draw-in groove, preceding spacing pole is provided with spacing inserted sheet, and locking plate before spacing inserted sheet inserts in the spacing draw-in groove locking, preceding locking plate can't rotate.

8. The lock according to claim 5, wherein: the back locking plate is provided with back gag lever post pushing portion, back gag lever post is provided with the pushing convex part, and when back locking plate was rotatory, back gag lever post pushing portion promoted the pushing convex part and removes, makes back gag lever post rotation and keeps away from back locking plate, and when the back locking plate was kept away from completely to the gag lever post, back gag lever post chucking gag lever post and the current action of locking the gag lever post.

9. The lock according to claim 5, wherein: the rear locking plate is provided with a limiting piece pushing part, and when the rear locking plate rotates, the limiting piece pushing part pushes the limiting piece to move, so that the limiting piece and the rear limiting rod are clamped or separated from each other.

10. The lock according to claim 1, wherein: the rear handle device also comprises a handle seat, a rotating seat, a coil spring, an outer ring and a fourth spring, wherein the handle seat is provided with an accommodating cavity, the accommodating cavity is provided with a limiting cavity, the outer ring is provided with a limiting part, the outer ring is arranged in the accommodating cavity in a rotating mode, the limiting part extends into the limiting cavity, and the limiting cavity limits the extending depth of the limiting part so as to limit the rotating angle of the outer ring;