CN212583459U - Central lock for composite door - Google Patents

Abstract

The utility model discloses a master-slave door central control lock, which comprises a shell, a control handle, a first linkage piece, a rotating piece, a locking piece and a shifting component; the control handle, the rotating piece and the locking piece are all rotationally connected to the shell; the first linkage piece is movably arranged on the shell and provided with an opening position and a closing position, and a first elastic piece capable of enabling the first linkage piece to move from the opening position to the closing position and reset is arranged on the first linkage piece; the control handle can be linked with the rotating piece or can be released from linkage, and the control handle can drive the first linkage piece to move relative to the shell through the rotating piece; the locking member can lock the first linkage member at the opening position; stir the subassembly and connect on brake valve lever, stir the subassembly and can link or separate with the locking piece, brake valve lever can drive the locking piece through stirring the subassembly and rotate so that the locking piece removes the locking to first linkage piece. The utility model discloses can keep the withdrawal state of bolt and make brake valve lever can reset, facilitate the use.

Description

Central lock for composite door

Technical Field

The utility model relates to a mechanical lock field, in particular to master-slave door central lock.

Background

The primary and secondary door is a special double-door-leaf split door, generally consists of a door leaf (secondary door) with narrower width and a door leaf (primary door) with wider width, and can be opened only for people to get through at ordinary times, and can be opened completely when large objects such as furniture and the like need to pass through, so that the large objects can be carried conveniently. Because the sub-door is opened infrequently, it is generally through realizing the control of opening and shutting through the mode of bolt about installation central lock control, central lock body is equipped with brake valve lever, it makes about bolt removal through rack and pinion structure or crank slide bar structure to rotate brake valve lever, when opening the door body, rotate brake valve lever, make about bolt retract in the door body, it can open to realize the door body, to the brake valve lever that can automatic re-setting, after loosening brake valve lever, its automatic re-setting can lead to about bolt stretching out from the door body, the rotation of the back door body is opened in the influence, and to the brake valve lever that can keep the pivoted position, it receives the collision easily when using and leads to damaging, not only control is inconvenient, and safety in utilization and durability are not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a master-slave door central lock, its retraction state that can keep the bolt and make brake valve lever can reset convenient to use.

The master-slave door central control lock comprises a shell, a control handle, a first linkage piece, a rotating piece, a locking piece and a shifting assembly; the control handle is rotationally connected to the shell; the first linkage piece is movably arranged on the shell and provided with an opening position and a closing position, and a first elastic piece is connected to the first linkage piece and can enable the first linkage piece to move from the opening position to the closing position; the rotating piece is rotationally connected to the shell, the control handle can be linked with the rotating piece or can be released from linkage, and the control handle can drive the first linkage piece to move relative to the shell through the rotating piece; the locking piece is rotatably connected to the shell and can lock the first linkage piece at an opening position; the toggle assembly is connected to the control handle, the toggle assembly can be linked with or separated from the locking piece, and the control handle can drive the locking piece to rotate through the toggle assembly so that the locking piece can be unlocked from the first linkage piece.

According to the utility model discloses master-slave door central lock, it has following beneficial effect at least: when the locking device is in a locking state, the first linkage piece enables the bolt to be in an extending state, the first linkage piece is in a closing position, when the locking device is unlocked, the control handle is rotated to enable the control handle to be linked with the rotating piece and drive the rotating piece to rotate, so that the first linkage piece is driven to move through the rotating piece, the first linkage piece moves to an opening position, the bolt retracts, the locking piece locks the first linkage piece at the opening position, the unlocking operation is completed, the rotating control handle is reset after the unlocking is completed, the rotating control handle is enabled to be in linkage with the rotating piece, and the retracting state of the bolt can be kept after the control handle is rotated and reset; when locking, rotate brake valve lever and drive and stir the subassembly and make its and locking piece linkage, continue to rotate brake valve lever and make the locking piece rotate through stirring the subassembly, make the locking piece remove the locking to first linkage, afterwards, first linkage moves under the effect of first elastic component and resets, and drive and rotate a rotation and reset, the bolt resets along with the removal of first linkage and stretches out, realize the operation of locking, it resets after the completion to lock and rotates brake valve lever, and make and stir subassembly and locking piece and remove the linkage, so that subsequent operation of unblanking goes on. The utility model discloses convenient to use can keep the withdrawal state of bolt and make brake valve lever can reset, can improve safety in utilization and durability.

According to some embodiments of the utility model, be equipped with the joint lug on the locking piece, it supplies to correspond to be equipped with on the first linkage the male joint recess of joint lug, be connected with the structure that deflects on the locking piece, the structure that deflects can make the locking piece to first linkage deflects, the joint lug can insert under the effect of structure that deflects the joint recess. Through setting up joint lug and joint recess, the locking piece deflects to first linkage under the effect of structure that deflects, when first linkage removes to the open position, the joint lug is gone into in the joint recess under the effect of structure that deflects, thereby the realization is to the locking of first linkage, and the setting of structure that deflects, also can conveniently stir subassembly and locking piece after-separating, the locking piece realizes resetting under the effect of structure that deflects and rotates, its simple structure, and convenient assembly is used.

According to some embodiments of the utility model, be equipped with first claw that colludes on the locking piece, stir the subassembly and collude the claw including the second, brake lever can drive stir the subassembly and rotate and make the second collude the claw can with first claw butt that colludes, in order to drive the locking piece rotates, just the second colludes the claw can rotate preset angle a back with first claw separation that colludes. Through setting up first claw and the second of colluding and colluding the claw, brake valve lever drives stir the subassembly and rotate, first claw and the second of colluding colludes the claw and can butt each other, stir the subassembly and collude the butt drive locking piece rotation between the claw through first claw and the second of colluding, thereby realize brake valve lever and can drive the locking piece through stirring the subassembly and rotate so that the locking piece removes the locking that resets to first linkage removal, and collude the claw at the second and predetermine angle an after rotating, the second colludes the claw and colludes the separation between the claw with first, realize stirring and remove the linkage between subassembly and the locking piece, the steam generator is simple in structure, and conveniently realize stirring linkage and separation between subassembly and the locking piece, the reliability is higher.

According to some embodiments of the utility model, stir the subassembly still include with brake lever fixed connection's connecting piece, the second colludes the claw and rotates to be connected on the connecting piece, the second colludes and is equipped with first butt portion on the claw, be equipped with second butt portion on the connecting piece, the second colludes and is connected with the third elastic component on the claw, first butt portion can under the effect of third elastic component the butt in second butt portion. By arranging the connecting piece and the third elastic piece, the first abutting part abuts against the second abutting part under the action of the third elastic piece, the control handle rotates and drives the connecting piece to rotate, the connecting piece drives the second hook claw to rotate through the abutting between the first abutting part and the second abutting part, and the connecting piece can abut against the first hook claw, so that the linkage between the shifting assembly and the locking piece is realized; the joint lug card on the locking piece is gone into the joint recess in order to lock first linkage when opening the position, and brake valve lever rotates and resets, and the second colludes claw and first claw butt of colluding, and at this moment, brake valve lever continues to rotate and resets, and separation and compression or tensile third elastic component between first butt portion and the second butt portion for the second colludes and can form between the claw and the first claw of colluding and dodge, makes things convenient for brake valve lever to rotate and resets.

According to some embodiments of the utility model, be equipped with on the rotation piece and dodge the portion, the last correspondence of brake valve lever is equipped with third butt portion, dodge the portion with it dodges the space to have between the third butt portion, it can supply to dodge the space brake valve lever is relative it rotates to rotate the piece, third butt portion can rotate to the butt in dodge in the portion. By arranging the avoiding part and the third abutting part, when the lock is unlocked, the third abutting part on the control handle is firstly pressed, because the avoiding space is arranged between the avoiding part and the third abutting part, the control handle can firstly rotate relative to the rotating part, the control handle rotates and extends out of the shell to facilitate the grabbing of a user, then, the avoiding part is abutted against the third abutting part, the control handle drives the rotating part to rotate through the abutment between the avoiding part and the third abutting part, the linkage and the linkage release between the control handle and the rotating part can be conveniently realized, meanwhile, when the locking of the locking part to the first linkage part at the opening position is released, the first linkage part resets under the action of the first elastic part and drives the rotating part to rotate, the avoiding space provides a space for the rotating part to rotate relative to the control handle, the blocking of the control handle to the rotation resetting of the rotating part can be avoided, and the locking part is released after the locking of the first linkage, first linkage can reset under the effect of first elastic component, improves the utility model discloses a reliability.

According to some embodiments of the utility model, be connected with the fourth elastic component on the brake lever, the fourth elastic component can make the brake lever rotates and resets. Through setting up the fourth elastic component, it can make things convenient for brake valve lever to carry out automatic re-setting, avoids needing the artifical trouble that rotates and reset, improves the utility model discloses a use convenience.

According to some embodiments of the utility model, be equipped with on the casing and restrict the limit commentaries on classics structure of control handle turned range. The structure restricts control handle's rotation range through setting up the limit, can avoid leading to linkage inefficacy or damage between other parts because of control handle excessively rotates, improves the utility model discloses a reliability.

According to the utility model discloses a some embodiments, be equipped with connecting groove on the first linkage, the expansion end of rotating the piece insert to connecting groove, when rotating the piece and rotating, the expansion end can drive first linkage removes. Through setting up connecting grooves, the expansion end activity of rotating the piece inserts to connecting grooves in, when rotating the piece and rotating, its expansion end can promote first linkage to remove through the cooperation with connecting grooves to realize rotating the piece and can drive the relative casing of first linkage and remove, its simple structure, and can make things convenient for the utility model discloses an equipment assembly, convenient production.

According to some embodiments of the present invention, the housing further includes a second linkage and a third linkage, the second linkage is movably disposed on the housing and is used for being connected to the bolt, the third linkage is rotatably connected to the housing, the first linkage passes through the third linkage and the second linkage, the first linkage can drive the second linkage to move through the third linkage, and the first linkage and the second linkage move in opposite directions. Through setting up second linkage and third linkage, first linkage corresponds respectively with the second linkage and is connected with two bolts, and first linkage can drive the second linkage through the third linkage and remove towards its opposite direction, and when locking, first linkage corresponds respectively with the second linkage and makes two bolts stretch out, inserts respectively and locks in the hole about the door frame, can improve the utility model discloses the reliability and the safety in utilization of locking.

According to some embodiments of the utility model, the middle part of third linkage rotate connect in on the casing, the both ends of third linkage are equipped with first spout and second spout respectively, correspond on the first linkage be equipped with swing joint in the first connecting portion of first spout, correspond on the second linkage be equipped with swing joint in the second connecting portion of second spout. During the use, the third linkage corresponds respectively through first spout and second spout and is connected the cooperation with first linkage and second linkage, when first linkage removes, remove in first spout through first connecting portion, it rotates to drive the third linkage, the third linkage rotates and makes the second connecting portion remove wherein through the second spout, it removes towards the opposite direction of first linkage direction of motion to drive the second linkage, thereby realize that first linkage can drive the second linkage and remove and make its direction of motion opposite with self direction of motion, a structure is simple, and can be convenient the utility model discloses an assembly, convenient production and can reduction in production cost.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a central lock of a mother door according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an exploded view of the central lock of the sub-master door shown in FIG. 1;

FIG. 4 is a schematic front view of the central lock of the child-mother door of FIG. 1 in a first state;

FIG. 5 is a schematic rear view of a portion of the central lock of the child-mother door shown in FIG. 4;

FIG. 6 is a schematic structural diagram of the central lock of the child-mother door of FIG. 1 in a second state;

FIG. 7 is an enlarged view of portion B of FIG. 6;

FIG. 8 is a schematic structural diagram of the central lock of the child-mother door of FIG. 1 in a third state;

FIG. 9 is a schematic front view of the central lock of the child-mother door of FIG. 1 in a fourth state;

fig. 10 is an enlarged schematic view of portion C of fig. 9.

Reference numerals:

a housing 100, a first rotating shaft 110, a rotation limiting protrusion 120, a rotation limiting groove 130, and a second rotating shaft 140;

a control handle 200, a third abutting portion 210, a fourth elastic member 220;

the first linkage piece 300, the first elastic piece 310, the clamping groove 320, the connecting groove 330 and the first connecting part 340;

a rotating member 400, an escape portion 410, and an escape space 411;

the locking member 500, the clamping convex block 510, the second elastic member 520 and the first hook claw 530;

the toggle assembly 600, the second hook 610, the first abutting portion 611, the connecting member 620, the second abutting portion 621, the third elastic member 630, and the predetermined angle a;

the second link 700, the second connecting part 710, the third link 800, the first sliding groove 810, and the second sliding groove 820.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, 2 and 3, a primary and secondary door central lock includes a housing 100, a control handle 200, a first linkage 300, a rotation member 400, a locking member 500 and a toggle assembly 600; the control handle 200 is rotatably connected to the housing 100; the first linkage piece 300 is movably arranged on the shell 100, the first linkage piece 300 has an opening position and a closing position, a first elastic piece 310 is connected to the first linkage piece 300, and the first elastic piece 310 can enable the first linkage piece 300 to move from the opening position to the closing position; the rotating part 400 is rotatably connected to the housing 100, the control handle 200 can be linked with or decoupled from the rotating part 400, and the control handle 200 can drive the first linkage part 300 to move relative to the housing 100 through the rotating part 400; the locking member 500 is rotatably connected to the housing 100, and the locking member 500 can lock the first linkage member 300 at the open position; the toggle assembly 600 is connected to the control handle 200, the toggle assembly 600 can be coupled with or separated from the locking member 500, and the control handle 200 can drive the locking member 500 to rotate through the toggle assembly 600 so that the locking member 500 unlocks the first linkage member 300.

In this embodiment, as shown in fig. 1 and 3, the housing 100 is provided with a first rotating shaft 110, the control handle 200 and the rotating member 400 are both rotatably connected to the housing 100 through the first rotating shaft 110, the lower end of the first linking member 300 is connected to a first elastic member 310, and the first elastic member 310 is a compression spring. When the locking device is in use, the first linkage member 300 is connected to the bolt (not shown), as shown in fig. 4, when the locking device is in a locked state, the first linkage member 300 makes the bolt in an extended state, and the first linkage member is in a closed position.

When the lock is unlocked, as shown in fig. 6, the control handle 200 is rotated to be linked with the rotating member 400 and drive the rotating member 400 to rotate, so that the rotating member 400 drives the first linkage member 300 to move, the first linkage member 300 moves to the opening position and compresses the first elastic member 310, as shown in fig. 8, at this time, the first linkage member 300 moves to complete the retraction of the bolt, the locking member 500 locks the first linkage member 300 at the opening position, the unlocking operation is completed, the control handle 200 is reset after the unlocking is completed, the control handle 200 is unlocked with the rotating member 400, and the control handle 200 can keep the retraction state of the bolt after the control handle 200 is rotated and reset.

When locking, the control handle 200 is rotated and drives the toggle assembly 600 to be linked with the locking piece 500, the control handle 200 is continuously rotated and the locking piece 500 is rotated through the toggle assembly 600, so that the locking piece 500 is unlocked from the first linkage piece 300, subsequently, the first linkage piece 300 is moved and reset under the action of the first elastic piece 310 and drives the rotating piece 400 to rotate and reset, the bolt is reset and extended along with the movement of the first linkage piece 300, the locking operation is realized, the reset rotation control handle 200 is locked, and the toggle assembly 600 is unlocked from the locking piece 500, so that the subsequent unlocking operation is carried out. The utility model discloses convenient to use can keep the withdrawal state of bolt and make brake valve lever 200 can reset, can improve safety in utilization and durability.

In practical applications, the specific structures of the control handle 200, the first linking member 300, the rotating member 400, the locking member 500, the toggle assembly 600, etc. can be set according to practical needs, and will not be described in detail herein, and will be described in detail below.

In some embodiments, the locking member 500 is provided with a locking protrusion 510, the first linkage member 300 is correspondingly provided with a locking groove 320 into which the locking protrusion 510 is inserted, the locking member 500 is connected with a deflection structure, the deflection structure can deflect the locking member 500 towards the first linkage member 300, and the locking protrusion 510 can be inserted into the locking groove 320 under the action of the deflection structure.

In the present embodiment, as shown in fig. 3, 4 and 8, the locking member 500 is provided with a locking protrusion 510, the first linkage member 300 is correspondingly provided with a locking groove 320 for the locking protrusion 510 to be inserted into, the deflecting structure is a second elastic member 520 connected to the locking member 500, the second elastic member 520 is a torsion spring, one end of the torsion spring abuts against the locking member 500, and the other end of the torsion spring abuts against the housing 100, so that the locking member 500 can deflect towards the first linkage member 300 under the action of the second elastic member 520, so that the locking protrusion 510 can abut against the first linkage member 300. When the first linkage member 300 moves to the open position, as shown in fig. 8, the clamping protrusion 510 is clamped into the clamping groove 320 under the action of the second elastic member 520, so as to limit the movement and the reset of the first linkage member 300, and the second elastic member 520 is arranged, so that the separation of the toggle assembly 600 and the locking member 500 can be facilitated, the locking member 500 can be reset and rotated under the action of the second elastic member 520 to abut against the first linkage member 300, and the linkage and the separation between the locking member 500 and the toggle assembly 600 are facilitated, so that the structure is simple, and the assembly and the use are facilitated.

In practical application, the specific way of locking the first linkage member 300 by the locking member 500 is various, for example, the locking member 500 and the first linkage member 300 are respectively provided with a magnetic attraction part correspondingly, and the magnetic attraction between the magnetic attraction parts can limit the first linkage member 300 to move and reset. The specific shape and structure of the clamping protrusion 510 and the clamping groove 320 can be changed according to the actual use requirement, and the deflection structure can be an elastic member, a magnetic attraction structure or a deformation structure arranged on the locking member 500, and the like, and is not limited in particular.

In some embodiments, the locking member 500 is provided with a first hook 530, the toggle assembly 600 includes a second hook 610, the control handle 200 can drive the toggle assembly 600 to rotate and enable the second hook 610 to abut against the first hook 530, so as to drive the locking member 500 to rotate, and the second hook 610 can be separated from the first hook 530 after rotating by a predetermined angle a.

In this embodiment, as shown in fig. 6 and 7, by providing the first hook 530 and the second hook 610, when the control handle 200 drives the toggle assembly 600 to rotate, the first hook 530 and the second hook 610 can be abutted and hooked with each other, the toggle assembly 600 drives the locking member 500 to rotate back to the first linkage member 300 through the hooking between the first hook 530 and the second hook 610, so that the control handle 200 can drive the locking member 500 to rotate through the toggle assembly 600, so that the locking member 500 releases the locking of the first linkage member 300, and after the second hook 610 rotates by a preset angle a, the second hook 610 and the first hook 530 are separated, so that the release of the linkage between the toggle assembly 600 and the locking member 500 is realized, the structure is simple, the linkage and the separation between the toggle assembly 600 and the locking member 500 are conveniently realized, and the reliability is high.

In practical applications, the locking member 500 and the toggle assembly 600 can be linked and separated by a ratchet and pawl structure, which is not described in detail herein, the specific shape and structure of the first hook 530 and the second hook 610 can be changed according to practical application requirements, and the preset angle a can also be changed by changing the turning radius between the first hook 530 and the second hook 610, which can be understood by those skilled in the art.

In some embodiments, the toggle assembly 600 further includes a connecting member 620 fixedly connected to the control handle 200, the second hook 610 is rotatably connected to the connecting member 620, the second hook 610 is provided with a first abutting portion 611, the connecting member 620 is provided with a second abutting portion 621, the second hook 610 is connected to a third elastic member 630, and the first abutting portion 611 can abut against the second abutting portion 621 under the action of the third elastic member 630.

In this embodiment, as shown in fig. 2, 9 and 10, the connecting member 620 is fixedly connected to the control handle 200, the second hook 610 is rotatably connected to the connecting member 620, and a third elastic member 630 is connected between the connecting member 620 and the second hook 610, the third elastic member 630 is a torsion spring, the first abutting portion 611 abuts against the second abutting portion 621 under the action of the third elastic member 630, when the control handle 200 is opened and rotated, the control handle 200 drives the connecting member 620 to rotate, the connecting member 620 drives the second hook 610 to rotate by the abutment between the first abutting portion 611 and the second abutting portion 621, and enables the second hook 610 to abut against the first hook 530, thereby realizing the linkage between the toggle assembly 600 and the locking member 500; when the clamping protrusion 510 on the locking member 500 is clamped into the clamping groove 320 to lock the first linkage member 300 at the opening position, the control handle 200 is rotated to be reset and closed, the second hook claw 610 abuts against the first hook claw 530, as shown in fig. 10, at this time, the control handle 200 is continuously rotated to be reset, the first abutting portion 611 and the second abutting portion 621 are separated and compress the third elastic member 630, so that the second hook claw 610 rotates to avoid the first hook claw 530, and the control handle 200 is conveniently rotated to be reset.

In practical application, the second hook claw 610 can be further connected to the control handle 200 through a telescopic shaft structure, when the second hook claw 610 is required to be abutted against and linked with the first hook claw 530, the second hook claw 610 extends out through the telescopic shaft structure, and when the second hook claw 610 and the first hook claw 530 are required to avoid, the second hook claw 610 can be retracted through the telescopic shaft structure, so that the effects of avoiding and releasing linkage are achieved. The specific structure of the toggle assembly 600 can be changed according to the actual application requirement, and is not limited herein.

In some embodiments, the rotating member 400 is provided with an avoiding portion 410, the control handle 200 is correspondingly provided with a third abutting portion 210, an avoiding space 411 is provided between the avoiding portion 410 and the third abutting portion 210, the avoiding space 411 can allow the control handle 200 to rotate relative to the rotating member 400, and the third abutting portion 210 can rotate to abut against the avoiding portion 410.

In this embodiment, as shown in fig. 4, 5 and 9, by providing the avoiding portion 410 and the third abutting portion 210, when unlocking, the third abutting portion 210 on the control handle 200 is pressed first, and because the avoiding space 411 is provided between the avoiding portion 410 and the third abutting portion 210, the control handle 200 can rotate relative to the rotating member 400 first, the control handle 200 rotates and extends out from the housing 100, so that a user can conveniently grab the control handle, and then, the avoiding portion 410 abuts against the third abutting portion 210, and the control handle 200 drives the rotating member 400 to rotate by the abutment therebetween, and when the control handle 200 is reset and rotated, the avoiding portion 410 is separated from the third abutting portion 210, so that the linkage and the release linkage between the control handle 200 and the rotating member 400 can be conveniently realized; simultaneously, when relieving the locking piece 500 to first linkage 300 in the locking of open position, first linkage 300 resets and drives and rotate piece 400 and rotate under the effect of first elastic component 310, dodges space 411 and provides and supplies to rotate the relative brake valve lever 200 pivoted space of piece 400, can avoid brake valve lever 200 to reset to the rotation of rotating piece 400 and cause the hindrance, make locking piece 500 relieve the locking back to first linkage 300 in open position, first linkage 300 can reset under the effect of first elastic component 310, improve the utility model discloses a reliability.

In practical application, the connection between the control handle 200 and the rotating member 400 can be realized by clamping or a ratchet mechanism, etc., and the specific structures of the control handle 200 and the rotating member 400 can be set according to practical use requirements, and those skilled in the art can understand the same.

In some embodiments, a fourth elastic member 220 is connected to the control handle 200, and the fourth elastic member 220 can rotationally reset the control handle 200. In this embodiment, as shown in fig. 1 and 3, the fourth elastic member 220 is a torsion spring, one end of which abuts on the control handle 200, and the other end of which abuts on the casing 100, as shown in fig. 8 and 9, when the control handle 200 is opened and rotated, the fourth elastic member 220 is compressed, and after the control handle 200 is loosened, under the effect of the fourth elastic member 220, the fourth elastic member can automatically rotate to reset, so that the control handle 200 can automatically reset, the trouble of manual rotation to reset is avoided, and the convenience in use of the present invention is improved.

In practical applications, the fourth elastic element 220 may also be a compression spring or a tension spring, and the like, and may be set according to practical application requirements, which can be understood by those skilled in the art.

In some embodiments, the housing 100 is provided with a rotation limiting structure capable of limiting the rotation range of the control handle 200. In this embodiment, as shown in fig. 3 and 4, the rotation limiting structure includes a rotation limiting protrusion 120 and a rotation limiting groove 130 which are disposed on the housing 100, the rotation limiting protrusion 120 is located at the lower end of the control handle 200, the lower end of the control handle 200 can be prevented from rotating and retracting into the housing 100, the rotation limiting groove 130 is located at the upper end of the control handle 200, the third abutting portion 210 is clamped into the rotation limiting groove 130, and the rotation range of the third abutting portion 210 is limited, so that the opening rotation range of the control handle 200 is limited, and the control handle is prevented from being opened excessively. The rotation range of structure to brake lever 200 is restricted through setting up the limit, can avoid leading to linkage failure or damage between other parts because of brake lever 200 excessively rotates, improves the utility model discloses a reliability.

During practical application, the rotation limiting structure can be set according to practical use requirements, for example, the rotation limiting protrusion 120 arranged at the upper end and the lower end of the control handle 200 limits the rotation range of the control handle, or the arc-shaped groove limits the rotation range of the control handle 200, and the like, which are not limited here.

In some embodiments, the first linking member 300 is provided with a connecting groove 330, the movable end of the rotating member 400 is inserted into the connecting groove 330, and the movable end of the rotating member 400 can move the first linking member 300 when the rotating member 400 rotates. In this embodiment, as shown in fig. 3, fig. 4 and fig. 5, by providing the connecting groove 330, the movable end of the rotating member 400 is movably inserted into the connecting groove 330, and when the rotating member 400 rotates, the movable end thereof can push the first linkage member 300 to move through the cooperation with the connecting groove 330, so that the rotating member 400 can drive the first linkage member 300 to move relative to the casing 100, and the structure is simple and convenient.

In practical applications, the first linking member 300 and the rotating member 400 may be connected through a slider-crank mechanism, so that the first linking member 300 is driven to move by the rotation of the rotating member 400, and the specific connection manner between the first linking member 300 and the rotating member 400 may be changed according to actual needs, which can be understood by those skilled in the art.

In some embodiments, the housing 100 is further provided with a second linkage member 700 and a third linkage member 800, the second linkage member 700 is movably disposed on the housing 100 and is used for connecting with a latch, the third linkage member 800 is rotatably connected to the housing 100, the first linkage member 300 is connected to the second linkage member 700 through the third linkage member 800, the first linkage member 300 can drive the second linkage member 700 to move through the third linkage member 800, and the first linkage member 300 and the second linkage member 700 move in opposite directions. Through setting up second linkage 700 and third linkage 800, first linkage 300 corresponds respectively with second linkage 700 and is connected with two bolts, and first linkage 300 can drive second linkage 700 through third linkage 800 and remove towards its opposite direction, when locking, and first linkage 300 corresponds respectively with second linkage 700 and makes two bolts stretch out, inserts respectively and locks in the hole about the door frame, can improve the utility model discloses reliability and the safety in utilization of locking. In practical applications, the specific connection structures among the first linkage 300, the second linkage 700 and the third linkage 800 can be set according to practical usage requirements, and will not be described in detail here, and will be described in detail below.

In some embodiments, the middle portion of the third link 800 is rotatably connected to the housing 100, two ends of the third link 800 are respectively provided with a first sliding groove 810 and a second sliding groove 820, the first link 300 is correspondingly provided with a first connecting portion 340 movably connected to the first sliding groove 810, and the second link 700 is correspondingly provided with a second connecting portion 710 movably connected to the second sliding groove 820.

In the embodiment, as shown in fig. 3, 4 and 5, the second rotating shaft 140 is disposed on the housing 100, the third link 800 and the locking member 500 are rotatably connected to the housing 100 through the second rotating shaft 140, when in use, the third link 800 is correspondingly connected and matched with the first link 300 and the second link 700 through the first sliding groove 810 and the second sliding groove 820, respectively, when the first link 300 moves, the first connecting portion 340 moves in the first sliding groove 810 to drive the third link 800 to rotate, the third link 800 rotates and moves the second connecting portion 710 therein through the second sliding groove 820 to drive the second link 700 to move in a direction opposite to the moving direction of the first link 300, so that the first link 300 can drive the second link 700 to move and make the moving direction opposite to the moving direction of the first link 300, the structure is simple, and the assembly of the present invention can be facilitated, convenient production and can reduce the production cost.

In practical application, the first linkage member 300, the second linkage member 700 and the third linkage member 800 may be connected through a rack and pinion structure, that is, the third linkage member 800 is a gear, rack portions engaged with the first linkage member 300 and the second linkage member 700 are correspondingly arranged on the first linkage member 300 and the second linkage member 700, the first linkage member 300 moves and drives the third linkage member 800 to rotate through the rack and pinion structure, and the third linkage member 800 drives the second linkage member 700 to move through the rack and pinion structure. The specific structure among the first linkage 300, the second linkage 700 and the third linkage 800 may be changed according to the actual use requirement, and is not limited herein.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. The utility model provides a master-slave door central lock which characterized in that includes:

a housing (100);

a control handle (200) rotatably connected to the housing (100);

the first linkage piece (300) is movably arranged on the shell (100), the first linkage piece (300) is provided with an opening position and a closing position, a first elastic piece (310) is connected to the first linkage piece (300), and the first elastic piece (310) can enable the first linkage piece (300) to move from the opening position to the closing position;

the rotating part (400) is rotatably connected to the shell (100), the control handle (200) can be linked with or released from the rotating part (400), and the control handle (200) can drive the first linkage part (300) to move relative to the shell (100) through the rotating part (400);

a lock member (500) rotatably coupled to the housing (100), the lock member (500) being capable of locking the first linkage member (300) in an open position;

toggle subassembly (600), connect on brake valve lever (200), toggle subassembly (600) can with locking piece (500) linkage or separation, brake valve lever (200) can pass through toggle subassembly (600) drives locking piece (500) rotate so that locking piece (500) remove the locking to first linkage piece (300).

2. The child-mother door center control lock according to claim 1,

be equipped with joint lug (510) on locking piece (500), it supplies to correspond to be equipped with on first linkage piece (300) joint lug (510) male joint recess (320), be connected with the deflection structure on locking piece (500), the deflection structure can make locking piece (500) to first linkage piece (300) deflect, joint lug (510) can insert under the effect of deflection structure joint recess (320).

3. The child-mother door center control lock according to claim 2,

be equipped with first claw (530) of colluding on locking piece (500), it colludes claw (610) including the second to stir subassembly (600), brake lever (200) can drive stir subassembly (600) and rotate and make the second collude claw (610) can with first claw (530) butt of colluding, in order to drive locking piece (500) rotate, just second collude claw (610) can rotate preset angle a after with first claw (530) separation of colluding.

4. The child-mother door center control lock according to claim 3,

toggle subassembly (600) still include with brake valve lever (200) fixed connection's connecting piece (620), the second is colluded claw (610) and is rotated and connect on connecting piece (620), the second is colluded and is equipped with first butt portion (611) on claw (610), be equipped with second butt portion (621) on connecting piece (620), the second is colluded and is connected with third elastic component (630) on claw (610), first butt portion (611) can under the effect of third elastic component (630) the butt in second butt portion (621).

5. The child-mother door center control lock according to claim 3,

it dodges portion (410) to be equipped with on rotation piece (400), correspond on brake valve lever (200) and be equipped with third butt portion (210), dodge portion (410) with space (411) is dodged to having between third butt portion (210), dodge space (411) and can supply brake valve lever (200) is relative rotation piece (400) rotates, third butt portion (210) can rotate to the butt in dodge on portion (410).

6. The child-mother door center control lock according to claim 1,

the control handle (200) is connected with a fourth elastic piece (220), and the fourth elastic piece (220) can enable the control handle (200) to rotate and reset.

7. The child-mother door center control lock according to claim 6,

the shell (100) is provided with a rotation limiting structure capable of limiting the rotation range of the control handle (200).

8. The child-mother door center control lock according to claim 1,

be equipped with on first linkage piece (300) connecting groove (330), the expansion end that rotates piece (400) inserts to connecting groove (330), when rotating piece (400) rotate, the expansion end can drive first linkage piece (300) remove.

9. The child-mother door center control lock according to claim 1,

the bolt-locking mechanism is characterized in that a second linkage piece (700) and a third linkage piece (800) are further arranged on the casing (100), the second linkage piece (700) is movably arranged on the casing (100) and is used for being connected with a bolt, the third linkage piece (800) is rotatably connected onto the casing (100), the first linkage piece (300) is connected with the second linkage piece (700) through the third linkage piece (800), the first linkage piece (300) can drive the second linkage piece (700) to move through the third linkage piece (800), and the movement directions of the first linkage piece (300) and the second linkage piece (700) are opposite.

10. The child-mother door center control lock according to claim 9,

the middle of the third linkage piece (800) is rotatably connected to the shell, a first sliding groove (810) and a second sliding groove (820) are respectively formed in two ends of the third linkage piece (800), a first connecting portion (340) movably connected to the first sliding groove (810) is correspondingly arranged on the first linkage piece (300), and a second connecting portion (710) movably connected to the second sliding groove (820) is correspondingly arranged on the second linkage piece (700).

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