CN111894349B - Lock set - Google Patents

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, 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 both freely rotate and drive the lock tongue to act, so that unlocking is realized.

Description

Lock set

Technical Field

The invention relates to a lockset.

Background

The existing lockset for the glass door is widely used for perforating on glass, the lockset is clamped on the glass, a square core penetrates through a hole and a lock core, one end of the square core is connected with a front handle, the other end of the square core is connected with a rear handle, but the mode of perforating on the glass leads to the reduction of the strength of the glass, and the glass is easy to break.

The utility model discloses also appear one kind and need not to open the hole on glass on the market, press from both sides the tool to lock tightly on glass, can accomplish the tool to lock installation, easy operation avoids glass trompil, but the handle of this tool to lock can't realize lifting the back lock, push down the unblock function, and the function is single, and 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 lock and unlock.

The purpose of the invention is realized in the following way:

The lock 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, 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 direction and locks the front locking plate, and the front locking plate cannot move, so that the front handle cannot rotate, and reverse locking is realized;

When the rear handle is pressed down, the rear handle drives the rear locking plate to rotate, the rear locking plate drives the limiting rod to move away from the front locking plate, the limiting plate follows the limiting rod to move, when the limiting rod is completely away from the front locking plate, the limiting plate is just locked to move, the limiting rod is kept away from the front locking plate, and at the moment, the front handle and the rear handle can both freely rotate and drive the locking tongue to move, so that unlocking is realized.

When the rear handle is lifted, 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, the front lock plate cannot rotate due to the fact that the front lock plate is locked, the front handle cannot be rotated by a user, the lock tongue cannot be pushed, and reverse locking is achieved, and the operation is quite simple.

When the rear handle is pressed down, the rear handle drives the rear lock plate to rotate, the rear lock plate pushes the limiting rod to rotate away from the front lock plate, the front lock plate and the rear lock plate can both rotate freely, the user can drive the front lock plate to rotate through rotating the front handle so as to push the lock tongue to move, and the user can drive the rear lock plate to rotate through rotating the rear handle so as to push the lock tongue to move, so that unlocking is realized, and the operation is quite simple.

The aim of the invention can be also solved by adopting 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 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 push the lock tongue together to extend out of the lock body;

the stop lever sets up on the lock body, and the stop lever includes preceding gag lever post, back gag lever post and second interlock, and preceding gag lever post is located the preceding terminal surface of lock body, and back gag lever post is located the rear end face of lock body, and preceding gag lever post and back gag lever post pass through the second interlock and connect, realize preceding gag lever post and back gag lever post interlock.

The front pushing arm and the rear pushing arm are connected together through the first linkage piece, the front pushing arm pushes the lock tongue to move, the rear pushing arm also pushes the lock tongue to move simultaneously, the lock tongue is stressed more uniformly, the lock tongue is prevented from overturning, and the lock tongue 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 back locking or unlocking operation.

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; 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 reset mechanism of the rear limiting rod.

As a more specific scheme, the limiting plate is arranged on the rear end face of the lock body in a rotating mode, a third spring is arranged between the limiting plate and the rear end face of the lock body, one end of the third spring is connected with the limiting plate, 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 plate.

As a more specific scheme, the front lock plate is provided with a front push arm pushing part, the front lock plate is arranged on the front end face of the lock body in a rotating mode, when the front lock plate rotates, the front push arm pushing part pushes the front push arm to move, the rear lock plate is provided with a rear push arm pushing part, the rear lock plate is arranged on the rear end face of the lock body in a rotating mode, and when the rear lock plate rotates, the rear push arm pushing part pushes the rear push arm to move.

The front lock plate is provided with a front push arm pushing part, when the front lock plate rotates, the front push arm pushing part pushes the front push arm to move so as to drive the lock tongue to move, the rear lock plate is provided with a rear push arm pushing part, and when the rear lock plate rotates, the rear push arm pushing part pushes the rear push arm to move so as to drive the lock tongue to move, and the operation is simple.

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

The rear lock plate is provided with a rear lock plate rotation limiting cavity, a rear limiting protrusion is arranged on the rear end face of the lock body corresponding to the rear lock plate rotation limiting cavity, and is inserted into the rear lock plate rotation limiting cavity, and the rear limiting protrusion limits the rotation angle of the rear lock plate.

The front limiting bulge is inserted into the front locking plate rotating limiting cavity, the front limiting bulge limits the rotating angle of the front locking plate, the front handle rotating angle is avoided to be larger, the rear limiting bulge is inserted into the rear locking plate rotating limiting cavity, the rear limiting bulge limits the rotating angle of the rear locking plate, the rear locking plate rotating angle is avoided to be larger, and the user can conveniently and quickly lock or unlock the rear locking plate.

As a more specific scheme, the front locking plate is provided with a limiting clamping groove, the front limiting rod is provided with a limiting inserting piece, the limiting inserting piece is inserted into the limiting clamping groove to lock the front locking plate, and the front locking plate cannot rotate.

The limiting insert is inserted into the limiting clamping groove to lock the front locking plate, the front locking plate cannot rotate, the front handle cannot rotate, and reverse locking is achieved.

As a more specific scheme, the rear lock plate is provided with a rear stop lever pushing part, the rear stop lever is provided with a pushing convex part, when the rear lock plate rotates, the rear stop lever pushing part pushes the pushing convex part to move, so that the rear stop lever rotates and is far away from the rear lock plate, and when the stop lever is completely far away from the rear lock plate, the rear stop lever clamps the stop lever and locks the current action of the stop lever.

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

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 a containing cavity, the containing cavity is provided with a limiting cavity, the outer ring is provided with a limiting part, the outer ring is arranged in the containing cavity in a rotating mode, the limiting part stretches into the limiting cavity, and the limiting cavity limits the stretching 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 surface of the outer ring 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 stretches into the inner cavity of the outer ring and is connected with a rear handle, and the sliding block stretches into the sliding groove and is propped against the outer ring push block;

The coil spring is sleeved on the rotating seat, one end of the coil spring is connected with the outer ring, the other end of the coil spring is connected with the rotating seat, and the coil spring forms a reset mechanism of the rotating 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 push block, the limiting part stretches into the limiting cavity, the limiting cavity limits the stretching 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 sliding distance of the sliding block is limited by the stop block, and the rotating angle of the rotating seat is limited, so that 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 with each other, 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 avoids the reset of the rear limiting rod, so that the unlocking state is maintained.

The beneficial effects of the invention are as follows:

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

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

According to the invention, the front pushing arm and the rear pushing arm are connected together through the first linkage piece, the front pushing arm pushes the lock tongue to move, and the rear pushing arm also pushes the lock tongue to move at the same time, so that the lock tongue is stressed more uniformly, the lock tongue is prevented from overturning, and the lock tongue moves more smoothly.

According to the invention, 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 can control the front limiting rod to lock or unlock the front locking plate, and the rear handle can realize the back locking or unlocking operation.

Drawings

FIG. 1 is a schematic view of a lock.

Fig. 2 is a schematic view of the front handle means, rear handle means and lock body of the lock, separated.

Fig. 3 is a schematic view of the rear handle assembly of the lock (with the intention of being prompted on the rear handle).

Fig. 4 is a schematic view of the rear handle assembly of the lock (rear handle depressed schematic view).

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 back locked state (rear lock plate orientation).

Fig. 7 is a schematic view of the lock in the back locked 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 lock in an unlocked state (rear lock plate orientation).

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

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

Fig. 13 is a B-B cross-sectional view of fig. 8.

Fig. 14 is a schematic view showing a state in which the rear stopper rod, the stopper piece and the rear lock plate of the lock are separated.

Fig. 15 is an assembled schematic view of the lock body and cylinder arrangement of the lock.

Fig. 16 is an assembly schematic diagram of a lock tongue, push arm, front lock plate, rear lock plate, stop lever and stop plate.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples:

The embodiment is shown in connection with fig. 1 to 16, and the lockset comprises 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, wherein the rear handle device 1 comprises a rear handle 11, a handle seat 12, a rotating seat 13, a coil spring 14, an outer ring 15 and a fourth spring 16, the handle seat 12 is provided with a containing cavity 121, and the upper end and the lower end of the containing cavity 121 are provided with limiting cavities 122.

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

The outer ring 15 is rotatably arranged in the accommodating cavity 121, the limiting part 151 extends into the limiting cavity 122, the limiting cavity 122 limits the extending depth of the limiting part 151, so that the rotating angle of the outer ring 15 is controlled, the fourth spring 16 is arranged in the limiting cavity 122, one end of the fourth spring 16 is abutted against the limiting part 151, the other end of the fourth spring 16 is abutted 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 stretches into the inner cavity of the outer ring 15, the sliding block 131 stretches into the sliding groove 154 and abuts against the 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 inserting opening 133 which is convenient to connect with the square core 9, the rotary seat 13 is provided with a coil spring clamping groove 132, the 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 opening 155, and the coil spring 14 forms a reset mechanism of the rotary seat 13.

The front handle means 17 comprises a front handle 171, a handle base 12, a swivel base 13, a coil spring 14, an outer ring 15 and a fourth spring 16, and the structure of the front handle 171 means 17 is identical to that of the rear handle 11 means 1, which will not be described here.

The lock body 2 comprises a front lock plate 21, a rear lock plate 22 and a middle lock plate 23, wherein the middle lock plate 23 is provided with a lock tongue opening 231 which is convenient for a magnet 34 to stretch out and draw back, one end of the middle lock plate 23 is connected with the front lock plate 21, the other end of the middle lock plate 23 is connected with the rear lock plate 22 to form a 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 the lock body 2 is provided with a first shaft hole 25 and a second shaft hole 26.

The lock tongue 3 comprises a front push plate 31, a rear push plate 32, a middle connecting plate 33 and a magnet 34, wherein the magnet 34 is arranged on the middle connecting plate 33, one end of the middle connecting plate 33 is connected with the front push plate 31, and the other end of the middle connecting plate 33 is connected with the rear push plate 32 to form a U-shaped lock tongue.

The spring bolt 3 is arranged in the lock body 2 and is close to the spring bolt opening 231, the front push plate 31 extends towards the front lock plate 21, a fifth spring 35 is arranged between the front push plate 31 and the front lock plate 21, one end of the fifth spring 35 is connected with the front push plate 31, the other end of the fifth spring 35 is connected with the front lock plate 21, the rear push plate 32 extends towards the rear lock plate 22, a sixth spring 36 is arranged between the rear push plate 32 and the rear lock plate 22, one end of the sixth spring 36 is connected with the rear push plate 32, the other end of the sixth spring 36 is connected with the rear lock plate 22, and the fifth spring 35 and the sixth spring 36 jointly form a reset mechanism of the spring bolt 3.

The lock cylinder device comprises a push arm 4 for driving the lock tongue 3 to act, a front lock plate 5 for driving the push arm 4 to act, a rear lock plate 6 for driving the push arm 4 to act, a limit rod 7 for locking the action of the front lock plate 5 and a limit plate 8 for locking the action of the limit rod 7.

The push arm 4 comprises a front push arm 41, a rear push arm 42 and a first linkage piece, the front push arm 41 and the rear push arm 42 are all L-shaped push arms, the front push arm 41 is arranged on the front lock plate 21 in a rotating mode and is close to the front push plate 31, the rear push arm 42 is arranged on the rear lock plate 22 in a rotating mode and is close to the rear push plate 32, the first linkage piece is a first rotating shaft 43, the first rotating shaft 43 is arranged in the first shaft hole 25, one end of the first rotating shaft 43 extends out of a front port of the first shaft hole 25 to be connected with the front push arm 41, the other end of the first rotating shaft 43 extends out of a rear port of the first shaft hole 25 to be 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 rotating center to enable the front push arm 41 and the rear push arm 42 to be linked.

The limiting rod 7 comprises a front limiting rod 71, a rear limiting rod 72 and a second linkage part, one end of the front limiting rod 71 is arranged on the front lock plate 21 in a rotating mode, a limiting inserting piece 711 is arranged at the other end of the front limiting rod 71, 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 resetting mechanism of the front limiting rod 71.

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

The second linkage member is a second rotating shaft 73, the second rotating shaft 73 is disposed in the second shaft hole 26, one end of the second rotating shaft 73 extends out of the front port of the second shaft hole 26 to connect with the front limiting rod 71, the other end of the second rotating shaft 73 extends out of the rear port of the second shaft hole 26 to connect with the rear limiting rod 72 to form a limiting rod 7, and the limiting rod 7 rotates around the second shaft hole 26 as a rotation center to enable the front limiting rod 71 and the rear limiting rod 72 to be linked.

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

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

The front lock plate 5 is provided with a front lock plate rotation limiting cavity 51, a limiting clamping groove 52 and a front push arm pushing part 53, the front lock plate 5 is arranged on the front lock plate 21 in a rotating mode, a front limiting protrusion 212 is arranged at the position of the front lock plate 21 corresponding to the front lock plate rotation limiting cavity 51, the front limiting protrusion 212 is inserted into the front lock plate rotation limiting cavity 51, the front limiting protrusion 212 limits the rotation angle of the front lock plate 5, and meanwhile, the front push arm pushing part 53 is close to the front push arm 41.

The rear lock plate 6 is provided with a rear lock plate rotation limiting cavity 61, a rear limit rod pushing part 62, a limit plate pushing part 63 and a rear push arm pushing part 64, the rear lock plate 6 is arranged on the rear lock plate 22 in a rotating mode, a rear limit protrusion 222 is arranged at the position of the rear lock plate 22 corresponding to the rear lock plate rotation limiting cavity 61, the rear limit protrusion 222 is inserted into the rear lock plate rotation limiting cavity 61, the rear limit protrusion 222 limits the rotation angle of the rear lock plate 6, and the rear push arm pushing part 64 is close to the rear push arm 42.

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 socket 133 of the rotary seat 13 of the front handle 171 device 17 and clamped, the other end of the square core 9 is inserted into the front lock plate 5 and 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 located beside the rear lock plate 22, one end of the square core 9 is inserted into the square core socket 133 of the rotating seat 13 of the rear handle 11 device 1 and clamped, the other end of the square core 9 is inserted into the rear lock plate 6 and clamped, and the rear handle 11 drives the rear lock plate 6 to rotate through the rotating seat 13 and the square core 9.

Working principle:

normal state:

the lobe 81 of the limiting piece 8 is inserted into the bayonet 721 of the rear limiting rod 72, the limiting piece 8 and the rear limiting rod 72 are clamped with each other, the rear limiting rod 72 compresses the second spring 75 and is far away from the rear locking piece 6, the rear locking piece 6 can freely rotate, the rear limiting boss 222 is located at the center position of the rear locking piece rotating limiting cavity 61, and at the moment, the rear handle 11 can freely select to lift upwards or press downwards.

The spacing inserted sheet 711 is kept away from spacing draw-in groove 52, and preceding gag lever post 71 removes the locking of preceding locking plate 5, and preceding locking plate 5 can freely rotate, and preceding spacing arch 212 is located the central point in preceding locking plate rotation spacing chamber 51, and preceding handle 171 can freely select to lift up or push down this moment.

And (3) a back locking state:

The rear handle 11 is lifted upwards, the rear handle 11 drives the rotating seat 13 to rotate, the sliding block 131 drives the outer ring 15 to rotate by pushing the outer ring pushing block 152, the limiting part 151 stretches into the limiting cavity 122 to extrude the fourth spring 16, the limiting cavity 122 limits the depth of the limiting part 151 stretching into the limiting cavity 122, the lifting angle of the rear handle 11 is limited, a user releases the rear handle 11, the fourth spring 16 resets to push the outer ring 15, and the rear handle 11 is restored to the initial position to prepare for the next action.

Because the rear handle 11 is lifted upwards, the square core 9 drives the rear locking plate 6 to rotate, and in the process of rotating the rear locking plate 6, the limit plate pushing part 63 pushes the limit plate 8 to rotate, the limit plate 8 is separated from the rear limit rod 72, the second spring 75 resets, the second spring 75 drives the rear limit rod 72 to press downwards, and the rear limit rod 72 abuts against the rear limit rod pushing part 62.

Because the front limiting rod 71 and the rear limiting rod 72 are interlocked, the front limiting rod 71 is pressed downwards along with the rear limiting rod 72, meanwhile, the first spring 74 is reset, the first spring 74 further pushes the front limiting rod 71 to be pressed downwards, the limiting insert 711 is inserted into the limiting clamping groove 52, the front limiting rod 71 is locked to the front locking plate 5, the front locking plate 5 cannot rotate, and a user cannot rotate the front handle 171, so that back locking is realized.

Unlocking state:

The rear handle 11 is pressed downwards, the rear handle 11 drives the rotating seat 13 to rotate, the sliding block 131 slides along the sliding groove 154 until the sliding block 131 abuts against the stop block 153, the sliding distance of the sliding block 131 is limited by the stop block 153, the pressing angle of the rear handle 11 is limited, the rear handle 11 is loosened by a user, the coil spring 14 is reset, the coil spring 14 pushes the rotating seat 13 to rotate, and the rear handle 11 is restored to the initial position for preparation of the next action.

Because the rear handle 11 is pressed downwards, the square core 9 drives the rear locking plate 6 to rotate, and in the process of rotating the rear locking plate 6, the rear limiting rod pushing part 62 pushes the rear limiting rod 72 to ascend, the rear limiting rod 72 compresses the second spring 75 and is far away from the rear locking plate 6 until the convex angle 81 of the limiting plate 8 is inserted into the bayonet 721 of the rear limiting rod 72, the limiting plate 8 abuts against the limiting plate pushing part 63, and the limiting plate 8 locks the action of the rear limiting rod 72.

Because the front limit lever 71 and the rear limit lever 72 are linked, the front limit lever 71 rises along with the rear limit lever 72 and compresses the first spring 74, so that the limit insert 711 is far away from the limit slot 52, the front limit lever 71 releases the locking of the front lock plate 5, and the front lock plate 5 can freely rotate.

By rotating 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 part 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 act.

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

Claims (7)

1. The utility model provides a tool to lock, 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 sets up in lock body one side, and back handle device includes back handle, and back handle sets up at lock body opposite side, its characterized in that: the lock cylinder 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 limit rod for locking the action of the front lock plate and a limit plate for locking the action of the limit rod, wherein the front handle drives the front lock plate to rotate through the square core, and the rear handle drives the rear lock plate to rotate through the square core;

When the rear handle is lifted, 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 direction and locks the front locking plate, and the front locking plate cannot move, so that the front handle cannot rotate, and reverse locking is realized;

When the rear handle is pressed down, the rear handle drives the rear locking plate to rotate, the rear locking plate drives the limiting rod to move away from the front locking plate, the limiting plate follows the limiting rod to move, when the limiting rod is completely away from the front locking plate, the limiting plate is just locked to move, the limiting rod is kept away from the front locking plate, and at the moment, the front handle and the rear handle are both free to rotate and drive the lock tongue to move, so that unlocking is realized;

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 achieved, and the front push arm and the rear push arm jointly push the lock tongue to extend out of the lock body;

The limiting rod is arranged on the lock body and comprises a front limiting rod, a rear limiting rod and a second linkage piece, the front limiting rod is positioned on the front end face of the lock body, the rear limiting rod is positioned on the rear end face of the lock body, and the front limiting rod is connected with the rear limiting rod through the second linkage piece to realize linkage of the front limiting rod and the rear limiting rod;

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; a second spring is arranged between the rear limit rod and the rear end face of the lock body, one end of the second spring is connected with the rear limit 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 reset mechanism of the rear limit rod;

The front lock plate is provided with a front push arm pushing part, the front lock plate is arranged on the front end face of the lock body in a rotating mode, when the front lock plate rotates, the front push arm pushing part pushes the front push arm to move, the rear lock plate is provided with a rear push arm pushing part, the rear lock plate is arranged on the rear end face of the lock body in a rotating mode, and when the rear lock plate rotates, the rear push arm pushing part pushes the rear push arm to move;

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 a containing cavity, the containing cavity is provided with a limiting cavity, the outer ring is provided with a limiting part, 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 surface of the outer ring 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 stretches into the inner cavity of the outer ring and is connected with a rear handle, and the sliding block stretches into the sliding groove and is propped against the outer ring push block;

The spring is sleeved on the rotating seat, one end of the spring is connected with the outer ring, the other end of the spring is connected with the rotating seat, and the spring forms a reset mechanism of the rotating seat.

2. The lock according to claim 1, 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.

3. The lock according to claim 1, wherein: the front lock plate is provided with a front lock plate rotation limiting cavity, a front limiting protrusion is arranged on the front end face of the lock body at a position corresponding to the front lock plate rotation limiting cavity, the front limiting protrusion is inserted into the front lock plate rotation limiting cavity, and the front limiting protrusion limits the rotation angle of the front lock plate;

The rear lock plate is provided with a rear lock plate rotation limiting cavity, a rear limiting protrusion is arranged on the rear end face of the lock body corresponding to the rear lock plate rotation limiting cavity, and is inserted into the rear lock plate rotation limiting cavity, and the rear limiting protrusion limits the rotation angle of the rear lock plate.

4. The lock according to claim 1, wherein: the front lock plate is provided with a limiting clamping groove, the front limiting rod is provided with a limiting insert, and the limiting insert is inserted into the limiting clamping groove to lock the front lock plate which cannot rotate.

5. The lock according to claim 1, wherein: the rear lock plate is provided with a rear limit rod pushing part, the rear limit rod is provided with a pushing convex part, when the rear lock plate rotates, the rear limit rod pushing part pushes the pushing convex part to move, the rear limit rod rotates and is far away from the rear lock plate, and when the limit rod is completely far away from the rear lock plate, the rear limit rod clamps the limit rod and locks the current action of the limit rod.

6. The lock according to claim 1, wherein: the rear locking plate is provided with a limiting plate pushing part, and when the rear locking plate rotates, the limiting plate pushing part pushes the limiting plate to act, so that the limiting plate and the rear limiting rod are clamped or separated.

7. The lock according to claim 1, wherein: the outer ring is arranged in the accommodating cavity in a rotating mode, the limiting part stretches into the limiting cavity, and the limiting cavity limits the stretching depth of the limiting part, so that the rotating angle of the outer ring is limited;

when the rear handle is lifted, the rotating seat rotates, the sliding block drives the outer ring to rotate by pushing the outer ring push block, the limiting part stretches into the limiting cavity, the limiting cavity limits the stretching 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 sliding distance of the sliding block is limited by the stop block, and the rotating angle of the rotating seat is limited, so that the pressing angle of the rear handle is limited.