CN112922461A

CN112922461A - Locking mechanism

Info

Publication number: CN112922461A
Application number: CN202110228524.6A
Authority: CN
Inventors: 李保福; 罗锋生; 李启平; 杨绍华
Original assignee: Zhuhai Youte IoT Technology Co Ltd
Current assignee: Zhuhai Unitech Power Technology Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-06-08
Anticipated expiration: 2041-03-01
Also published as: CN112922461B

Abstract

The application relates to tool to lock technical field particularly, relates to a locking mechanism, and it includes: a substrate; a movable body movably connected to the base body to have an open position and a closed position; the first lock tongue is movably arranged on the base body so as to have a first locking position and a first unlocking position, and the first lock tongue is used for locking the movable body at the closing position; a first elastic member for applying a first elastic force to the movable body to drive the movable body to move from the closed position to the open position after the movable body is unlocked; the limiting assembly is arranged on the base body, is configured to apply acting force opposite to the first elastic force to the movable body at least in the process that the first lock tongue moves to the first unlocking position, so that the friction force received by the first lock tongue is reduced, the problem that unlocking is inconvenient due to large friction force in the prior art is solved, and meanwhile, the limiting assembly is also configured to remove the acting force when the first lock tongue moves to the first unlocking position.

Description

Locking mechanism

Technical Field

The application relates to the technical field of locks, in particular to a locking mechanism.

Background

The bolt of a lock is generally used for locking an object, for example, the bolt is extended to limit the activities of a cabinet door, a drawer, a handle and the like to realize locking. For convenient opening, often with object elasticity setting for the object can the auto-eject after the spring bolt is packed up. However, the elastic object has a large force acting on the latch bolt, so that the latch bolt needs a large driving force to overcome the friction force to retract and unlock the latch bolt.

Disclosure of Invention

The application aims at providing a locking mechanism to solve the problem that the friction force that the spring bolt received among the prior art is great to be convenient for unblock.

The embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a locking mechanism, which includes:

a substrate;

a movable body movably connected to the base body to have an open position and a closed position;

the first bolt is movably arranged on the base body so as to have a first locking position and a first unlocking position, and the first bolt can lock the movable body at the closing position when being located at the first locking position;

a first elastic member for applying a first elastic force to the movable body to drive the movable body to move from the closed position to the open position after the movable body is unlocked;

the limiting assembly is arranged on the base body, is configured to apply an acting force opposite to the first elastic force to the movable body at least in the process that the first lock tongue moves to the first unlocking position so as to reduce the friction force applied to the first lock tongue, and is further configured to remove the acting force when the first lock tongue moves to the first unlocking position.

The first lock tongue prevents the first elastic member from driving the movable body to move from the closed position to the open position when in the first locking position, namely the first lock tongue applies a reaction force to the movable body to resist the first elastic member, which makes a large friction force possible when the first lock tongue moves relative to the movable body. This application removes the in-process to first unblock position at first spring bolt, utilize spacing subassembly restriction activity body in order to apply the effect power in reverse first elastic force, in order to share the reaction force of first spring bolt to the activity body, thereby reduce the frictional force between first spring bolt and the activity body, solve among the prior art because the great and not convenient problem of unblock of frictional force, this spacing subassembly can remove the restriction to the activity body when first spring bolt removes to first unblock position again simultaneously, make the activity body can pop out to the open position under the effect of first elastic component, promote the unblock convenience.

In an embodiment of the present application, optionally, the movable body is connected to the base through a rotating shaft, a first engaging portion and a second engaging portion are formed on the movable body, the first engaging portion is engaged with the first lock tongue, the second engaging portion is engaged with the limiting component, and the first engaging portion is in clearance fit with the first lock tongue.

In above-mentioned technical scheme, because first cooperation portion and first spring bolt clearance fit, the activity body can make first spring bolt contactless activity body when removing under the cooperation of spacing subassembly, realizes that first spring bolt does not receive activity body friction, further solves the problem of the unblock of being not convenient for because frictional force is great.

In an embodiment of the present application, optionally, a distance between the first matching portion and the rotation shaft is smaller than a distance between the second matching portion and the rotation shaft.

In above-mentioned technical scheme, the arm of force of first cooperation portion is less than the arm of force of second cooperation portion, and because the required moment of force of rotating the activity body is the same, under the condition of locking the activity body alone, the required reaction force that provides of spacing subassembly is less than first spring bolt, and under the condition of guaranteeing that the frictional force that first spring bolt received is little, can laborsaving unblock, the frictional force of guaranteeing spacing subassembly is also little, the required drive power of removal is also less to further solve the inconvenient problem of unblock.

In an embodiment of the present application, optionally, the locking mechanism further includes an operating member, the operating member is disposed on the base and is linked with the first lock tongue, and the operating member is configured to drive the first lock tongue to move to the first unlocking position.

In the technical scheme, because the friction force on the first lock tongue is small, the force required to be overcome by driving the first lock tongue by the operating part is small, and the problem of inconvenience in unlocking is solved.

In an embodiment of the present application, optionally, the limiting assembly includes a second locking tongue movably disposed on the base body to have a second locking position and a second unlocking position, and the second locking tongue is capable of locking the movable body in the closing position in the second locking position;

the second lock tongue is in linkage with the operating part or the first lock tongue, so that the operating part drives the first lock tongue to move to the first unlocking position and drives the second lock tongue to move to the second unlocking position.

In the above technical scheme, the second lock tongue is used for sharing the stress of the first lock tongue so that the first lock tongue can be unlocked under the condition of small friction force, and the second lock tongue is unlocked in a delayed manner so as to release the movable body, so that the movable body can be opened under the action of the first elastic piece.

In an embodiment of the application, optionally, the limiting assembly further includes a third elastic member and a fourth elastic member, the third elastic member abuts against between the base and the second lock tongue to apply a third elastic force to the second lock tongue so as to drive the second lock tongue to move to the second locking position, and the second lock tongue is connected to the operating member or the first lock tongue through the fourth elastic member.

In the above technical scheme, in the process that the first lock tongue moves to the first unlocking position, the operating part or the first lock tongue applies force to the second lock tongue by stretching the fourth elastic part, that is, the operating part plays a role in driving the second lock tongue in a delayed manner when driving the first lock tongue, and the third elastic part resets the second lock tongue after the movable body is opened, so that the movable body is locked and unlocked next time.

In an embodiment of the present application, optionally, the limiting assembly includes an adapter, the adapter is connected to an end of the fourth elastic member, which is far away from the second lock tongue, and the adapter is linked with the operating member or the first lock tongue.

In the technical scheme, after one end of the fourth elastic piece is connected to the adapter piece, the adapter piece is linked with the operating piece or the first lock tongue, the adapter piece is not easy to deform relative to the fourth elastic piece, the linkage action with the operating piece or the first lock tongue can be guaranteed to be stable, and the fourth elastic piece easy to deform is easier to assemble compared with the fourth elastic piece easy to deform.

In one embodiment of the present application, optionally, the adaptor mates with the first latch ramp.

In the technical scheme, the mode that the adaptor is linked with the first lock tongue is in inclined plane fit, and the adaptor and the first lock tongue are not required to be directly connected into a whole, so that the adaptor and the first lock tongue are convenient to disassemble and assemble.

In an embodiment of the present application, optionally, the adapter is fixedly connected to the operating element.

In the technical scheme, the adaptor is directly and fixedly connected with the operating part, the transmission path is clear, the structure is simple and compact, and the linkage is stable.

In an embodiment of the present application, optionally, a through hole is formed on the first lock tongue, and the operating element is disposed through the through hole and is engaged with the first lock tongue inclined surface.

In the technical scheme, the operating part and the first lock tongue are in linkage in an inclined surface fit mode, and the operating part and the first lock tongue are not required to be directly connected into a whole, so that the assembly and disassembly are convenient; and the operating part is arranged in the through hole in a penetrating way, so that the operating part is stably matched with the first lock tongue and is not easy to separate.

In an embodiment of the present application, optionally, a moving direction of the first locking tongue is parallel to a moving direction of the second locking tongue, and an angle between an axis of the fourth elastic member and the second locking tongue is greater than 90 °.

In the above technical scheme, the fourth elastic element applies backward component force to the second lock tongue all the time in the process of being stretched, so that the fourth elastic element drives the second lock tongue when being stretched to a certain degree.

In an embodiment of the present application, optionally, a spherical groove is formed on the movable body, and a ball fitted with the spherical groove is formed at one end of the second lock tongue.

In the above technical scheme, the marble contacts with the surface of the whole spherical groove when the second lock tongue is locked at the second locking position, and when the second lock tongue starts to move to the second unlocking position, the contact area of the marble and the spherical groove is rapidly reduced, so that the effects of rapidly reducing friction and moving the driving force required by the second lock tongue are achieved, and the problem of inconvenience in unlocking is further solved.

In addition, in macroscopic view, compared with the conventional bolt and the movable body which are in surface contact, the marble and the movable body can be seen as point contact, so that the friction force borne by the second bolt during movement is also greatly reduced.

In an embodiment of the present application, optionally, the limiting assembly includes an electromagnet configured to be energized to attract the movable body when the first latch tongue moves to the first unlocking position, and configured to be de-energized to release the movable body when the first latch tongue moves to the first unlocking position.

In the technical scheme, the electromagnet shares the stress of the first lock tongue, so that the first lock tongue can be unlocked under the condition of small friction force, and the electromagnet is unlocked in a delayed mode to release the movable body, so that the movable body can be opened under the action of the first elastic piece.

In an embodiment of the present application, optionally, the movable body is a handle, and one end of the handle is rotatably connected to the base.

In the technical scheme, the handle is close to the base body when in the closed position, and the handle rotates relative to the base body to reach the open position so as to be convenient for manual operation.

In an embodiment of the present application, optionally, the locking mechanism further includes:

the third bolt is used for locking an external object;

the transmission shaft is rotatably arranged on the base body, one end of the transmission shaft is connected with the third bolt, and the other end of the transmission shaft is connected with the handle.

In the technical scheme, the third bolt can be driven to rotate by manually operating the handle so as to lock or unlock an external object through the locking mechanism.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic perspective view of a movable body of a locking mechanism in a closed position according to an embodiment of the present application;

fig. 2 is a schematic perspective view of a movable body of a locking mechanism in an open position according to an embodiment of the present application;

fig. 3 is a schematic perspective view of a lock cylinder of a locking mechanism provided in an embodiment of the present application;

fig. 4 is a schematic plan view of a movable body of a locking mechanism provided in an embodiment of the present application in a closed position;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4 when the locking mechanism employs a stop assembly;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is an enlarged view of portion C of FIG. 5;

FIG. 8 is a state diagram of the first bolt moving to a first unlocked position when the locking mechanism employs a limit assembly;

FIG. 9 is an enlarged view of portion D of FIG. 8;

FIG. 10 is an enlarged view of portion E of FIG. 9;

FIG. 11 is a state diagram of the first latch bolt moving to a first unlocked position when the locking mechanism employs a limiting assembly;

FIG. 12 is an enlarged view of portion F of FIG. 11;

FIG. 13 is another schematic view of an adapter of a spacing assembly;

FIG. 14 is a further schematic view of an adapter of a spacing assembly;

FIG. 15 is a cross-sectional view taken along line A-A of FIG. 4 when the locking mechanism employs an alternative spacing assembly;

FIG. 16 is an enlarged view of portion G of FIG. 15;

fig. 17 is a schematic plan view of the lock cylinder with the first bolt in the first locked position when the locking mechanism employs another limiting assembly;

FIG. 18 is a sectional view taken along line H-H of FIG. 17;

FIG. 19 is a sectional view taken along line J-J of FIG. 17;

FIG. 20 is a schematic plan view of the lock cylinder with the first bolt in a first unlocked position when the locking mechanism employs another limiting assembly;

FIG. 21 is a cross-sectional view taken along line K-K of FIG. 20;

fig. 22 is a sectional view taken along line L-L of fig. 20.

Icon: 100-a substrate; 110-a housing; 111-upper shell; 112-mesochite; 113-a lower shell; 120-a drive shaft; 130-a third bolt; 200-a handle; 210-a first mating portion; 220-a second mating portion; 230-a battery; 300-a first resilient member; 400-a first bolt; 430-a first bevel; 440 a-a second bevel; 450-a second resilient member; 500 a-a first stop assembly; 510 a-a second bolt; 520 a-a third resilient member; 530 a-a fourth resilient member; 540 a-an adaptor; 600-an operating member; 610-a push rod; 620-keycap; 630-an elastic sleeve; 700-elastic cushion; 800-mechanical lock cylinder; 810-a key; 240 b-armature; 500 b-a second stop assembly; 510 b-an electromagnet; 520 b-a control circuit; 521 b-trigger switch; 530 b-identification element; 540 b-a sensing element; 611 b-sink tank; 620 b-moving ball.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

The locking mechanism provided in this embodiment is shown in fig. 1 and 2, and includes a base 100 and a movable body, wherein the movable body is movably connected to the base 100, so that the movable body has a closed position close to the base 100 and an open position relatively far from the base 100.

Referring to fig. 1, 2 and 3, the base 100 includes a housing 110 and a cylinder core integrally installed in the housing 110, the movable body being connected to the housing 110.

For convenience of installation, the housing of the cylinder includes an upper shell 111, a middle shell 112 and a lower shell 113, the middle shell 112 surrounds the sides of the cylinder, the upper shell 111 and the lower shell 113 are attached to both ends of the middle shell 112, respectively, and the cylinder is installed in the housing 110 after the components of the cylinder are assembled inside the housing. The lock core is provided with a first lock tongue 400, and the middle shell 112 is provided with a passage through which the first lock tongue 400 passes.

The first latch 400 is configured to have a first locked position and a first unlocked position, or the first latch 400 of the key cylinder in the base body 100 is movable between the first locked position and the first unlocked position.

When the first lock tongue 400 is in the first lock position, the movable body can be locked in the closed position.

When the first latch 400 is in the first unlock position, the movable body can move from the close position to the open position.

To facilitate opening the movable body, the locking mechanism further includes a first elastic member 300, and the first elastic member 300 is configured to apply a first elastic force to the movable body, so that the movable body can be ejected to the open position after being unlocked, thereby facilitating quick opening of the movable body.

Due to the action of the first elastic member 300, when the movable body is locked by the first locking tongue 400, a large pressure exists between the movable body and the first locking tongue 400, which causes a large friction force to be generated when the first locking tongue 400 moves between the first locking position and the first unlocking position, so that a large driving force needs to be applied to the first locking tongue 400 to overcome the friction force to move the first locking tongue 400 to the first unlocking position.

The locking mechanism provided by the embodiment is provided with a limiting component to solve the problem that the first lock tongue 400 is inconvenient to unlock due to large friction force in cooperation with the movable body.

The position limiting assembly is disposed on the base 100, and optionally, the position limiting assembly is disposed on the aforementioned lock cylinder.

The limiting assembly is configured to apply an acting force opposite to the first elastic force to the movable body at least in the process that the first lock tongue 400 moves to the first unlocking position so as to share a reaction force which the first lock tongue 400 needs to provide to the movable body, so that the pressure between the first lock tongue 400 and the movable body is reduced, and the friction force generated when the first lock tongue 400 moves relative to the movable body is correspondingly reduced, therefore, a smaller driving force is applied to the first lock tongue 400, so that the first lock tongue 400 can move from the first locking position to the first unlocking position, and the problem that unlocking is inconvenient due to the larger friction force is solved.

Meanwhile, in order to ensure that the movable body still has the characteristics of being opened quickly and being unlocked conveniently, the limiting assembly is further configured to remove the acting force when the first lock tongue 400 moves to the first unlocking position, so that the limitation on the movable body is removed, and the movable body can be popped up to the opening position under the action of the first elastic piece 300.

The movable body that this application indicates can be objects such as the door of installing on the building, the cabinet door of installing on the cupboard, install the drawer on the object. In the present embodiment, the movable body is taken as the handle 200, and when the movable body is taken as the handle 200, the base 100 may be mounted on a door or a drawer, so that the locking mechanism provided in the present embodiment may also be used for locking an external object.

For example, the locking mechanism is a planar lock installed on a cabinet door of the cabinet, and a lock sheath matched with the locking mechanism is arranged on the cabinet body of the cabinet. The base 100 is mounted to a cabinet door, and a recess for receiving the handle 200 is formed on the housing 110 of the base 100, and is hidden in the recess to be flush with the surface of the cabinet door when the handle 200 is in the closed position, and is higher than the surface of the cabinet door when the handle 200 is in the open position, so as to be operated by a person.

The locking mechanism further comprises a third bolt 130, the base body 100 is provided with a rotatable transmission shaft 120, one end of the transmission shaft 120 is connected with the third bolt 130, and the other end of the transmission shaft 120 is connected with the handle 200, so that the third bolt 130 can be driven to rotate by rotating the handle 200, the third bolt 130 is matched with the lock sheath or is separated from the lock sheath, and the cabinet door is locked and unlocked.

There are various movable connection ways of the movable body and the base 100, and the handle 200 is still taken as an example here. Referring to fig. 4 and 5, in the present embodiment, one end of the handle 200 is rotatably connected to the base 100. Further, one end of the handle 200 is connected to the transmission shaft 120 through a rotation shaft, the first elastic element 300 is configured to be sleeved on the torsion spring on the transmission shaft 120, the torsion spring enables the handle 200 to bounce and be higher than the surface of the cabinet door, and the third latch bolt 130 can be driven to rotate by holding the handle 200 and driving the transmission shaft 120 to rotate, so as to open the cabinet door.

In other embodiments, one end of the handle 200 is telescopically coupled to the base 100. Further, the sleeve is formed to the one end of handle 200, and the transmission shaft 120 is located to the sleeve cover and forms the key-type connection, and consequently handle 200 can move along the axis direction of transmission shaft 120 to the realization flushes or exceeds the surface of cabinet door with the surface of cabinet door, can also drive transmission shaft 120 synchronous rotation simultaneously in order to realize driving third spring bolt 130. The first elastic member 300 is held between the housing 110 and the sleeve to be rapidly ejected when the handle 200 is unlocked.

For other embodiments, the handle 200 may not be used to control the third latch 130 to rotate, but rather, may be used as a structure that can be lifted by hand after being extended, so as to facilitate carrying of objects such as a cabinet connected thereto.

The locking mechanism further comprises an operating member 600, the operating member 600 is disposed on the base 100 and is linked with the first latch tongue 400, and the operating member 600 is used for driving the first latch tongue 400 to move to the first unlocking position.

The operating member 600 may be an electric driving device, such as a motor screw, a linear module, etc., and the electric driving device drives the first latch 400 to move to the first unlocking position when operating.

The operating member 600 may also be a manual driving device, and the operating member 600 is used for being operated by a human hand to drive the first lock tongue 400 to move to the first unlocking position.

The operating member 600 may be moved parallel to the direction of movement of the first latch 400 to actuate the first latch 400; alternatively, the operating member 600 forms a slope fit with the first latch 400 to actuate the first latch 400; alternatively, the operating member 600 may be provided with a gear, and the first latch tongue 400 may be provided with a rack, and the first latch tongue 400 may be driven by rotating the operating member 600 through the gear and the rack.

In the present embodiment, the operation member 600 is a manual driving device that forms a slope fit with the first latch 400.

As shown in fig. 3, 4 and 5, an opening allowing the operating member 600 to pass therethrough is formed in the upper case 111 of the key cylinder, the operating member 600 includes a push rod 610, one end of the push rod 610 is exposed to the opening of the upper case 111, and the other end of the push rod 610 is slope-engaged with the first latch 400.

Referring to fig. 5, a first protrusion is formed on the first latch 400, a first inclined surface 430 is formed on the first protrusion, and the other end of the push rod 610 acts on the first inclined surface 430, so that when the operating element 600 is pressed, the pressing force can be converted into a force along the moving direction of the first latch 400 to drive the first latch 400 to move to the first unlocking position.

It should be noted that at least one of the first protrusion and the push rod 610 may have a slope, in this embodiment, the first protrusion and the push rod 610 both have slopes, and the slope of the first protrusion (i.e., the first slope 430 shown in the figure) fits the slope of the push rod 610.

Optionally, a through hole is formed on the first latch 400, the first protrusion is formed on an inner wall of the through hole, and the push rod 610 penetrates through the through hole and is engaged with the first inclined surface 430.

So that the first inclined surface 430 and the push rod 610 form a guiding fit to realize pushing the first latch 400, and the through hole and the push rod 610 form a guiding fit to make the push rod 610 move stably and not easily disengage from the first latch 400. By combining the through hole and the first inclined surface 430, the stability of the fitting between the operating member 600 and the first latch tongue 400 is improved, and no additional component is added between the operating member 600 and the first latch tongue 400 or between the operating member 600 and the first latch tongue 400, so that the structure is simple and compact.

In order to be suitable for being pressed by a human hand, and further solve the problem of inconvenient unlocking, the operating member 600 further includes a key cap 620, and the key cap 620 is disposed at one end of the push rod 610 extending out of the opening of the base 100. The keycap 620 is sleeved on the end of the push rod 610 to increase the contact area between the push rod and the human hand.

A cavity is formed in the base body 100, the inner diameter of the cavity is larger than the caliber of the opening, the diameter of the keycap 620 is matched with the caliber of the opening, a flange is formed on the keycap 620, and the flange is used for preventing the keycap 620 from being separated from the base body 100 from the opening.

On the basis of preventing the keycap 620 from falling off, in order to improve the pressing experience, an elastic sleeve 630 is further arranged in the cavity, the elastic sleeve 630 is sleeved on the periphery of the push rod 610, one end of the elastic sleeve abuts against the inner wall of the cavity, and the other end of the elastic sleeve is supported on the flange of the keycap 620, so that the keycap 620 can return to the original position after being loosened. Optionally, the elastic sleeve 630 is provided in a hollow circular truncated cone shape, so that the elastic sleeve 630 and the push rod 610 are separated from each other as far as possible, and even if the elastic sleeve 630 deforms under pressure, the elastic sleeve is not easy to stick to the surface of the push rod 610 to increase friction force, so that the pressing force required to be provided by a hand is further reduced, a labor-saving effect is achieved, and the problem of inconvenient unlocking is further solved.

A second elastic member 450 is further provided in the locking mechanism, and the second elastic member 450 serves to apply a second elastic force to the first latch 400. The second elastic member 450 abuts against the middle shell 112 and the rear end of the first latch 400, and after the external force applied to the operation member 600 by a human hand disappears, the second elastic member 450 drives the first latch 400 to move to the first locking position.

The first latch tongue 400 is moved to the first locking position while the operating member 600 is reset by the first inclined surface 430 and the push rod 610, so that the handle 200 is locked and unlocked next time.

To facilitate locking, the handle 200 has a first mating portion 210 and a second mating portion 220, wherein the first mating portion 210 is used for mating with the first locking tongue 400, and the second mating portion 220 is used for mating with the position-limiting component.

To further reduce the friction force experienced by the first latch tongue 400, the first latch tongue 400 is configured to be as free as possible from contact with the handle 200 during movement of the first latch tongue 400 to the first unlocked position. In the process of unlocking the handle 200, the handle 200 can be limited by the limiting component, so that a gap is formed between the first lock tongue 400 and the handle 200, sliding friction force generated by contact is avoided, and the problem that unlocking is inconvenient due to large friction force is further solved.

Alternatively, the first fitting portion 210 is a snap hole formed on the handle 200, which is loosely fitted with the first locking tongue 400.

In other embodiments, the first mating portion 210 may be further configured as a protrusion formed on the handle 200, and the first locking tongue 400 may limit the opening of the handle 200 by blocking the protrusion, and in order to avoid the friction of the first locking tongue 400, when the limiting assembly is mated with the second mating portion 220, a gap is formed between the first locking tongue 400 and the protrusion.

Figures 5-12 illustrate a stop assembly, hereinafter referred to as a first stop assembly 500a for ease of description.

The first limit stop assembly 500a includes a second locking tongue 510a, and the second locking tongue 510a is configured to engage with the second engaging portion 220 during the movement of the first locking tongue 400 from the first locking position to the first unlocking position, so as to lock the handle 200 in the closed position.

The second latch 510a is movably disposed on the base 100 to have a second locked position and a second unlocked position. Optionally, a passage is formed in the middle shell 112 of the lock cylinder to allow the second latch 510a to pass through, and the second latch 510a can be extended to be located at the second locking position and can also be retracted to be located at the second unlocking position.

The second latch 510a can cooperate with the handle 200 when in the second locked position; the second latch tongue 510a is separated from the handle 200 when in the second unlocked position.

Referring to fig. 5, 6 and 7, when the first latch tongue 400 is in the first locking position, the second latch tongue 510a is in the second locking position.

The second latch tongue 510a has a delayed unlocking function, and the second latch tongue 510a remains engaged with the handle 200 during the movement of the first latch tongue 400 from the first locked position to the first unlocked position. When the first latch tongue 400 is just moved to the first unlocking position, please refer to fig. 8, 9 and 10, the second latch tongue 510a is moved to the second unlocking position.

When both the first locking tongue 400 and the second locking tongue 510a release the handle 200, as shown in fig. 11, the handle 200 is ejected by the first elastic member 300.

The first limit assembly 500a further includes a third elastic member 520a, and the third elastic member 520a is configured to apply a third elastic force to the second locking tongue 510a to drive the second locking tongue 510a to move to the second locking position, so that the second locking tongue 510a can be reset after the handle 200 is opened, so as to lock and unlock the handle 200 next time.

The second latch 510a is also coupled with the first latch 400 through a fourth elastic member 530a, so as to implement a delayed unlocking function.

The phrase "coupled to the first latch tongue 400" means that the second latch tongue 510a is connected to the first latch tongue 400 or engaged with the first latch tongue 400 through the fourth elastic member 530a, or the second latch tongue 510a is connected to the operating member 600 for driving the first latch tongue 400 through the fourth elastic member 530a or engaged with the operating member 600, so that when the operating member 600 drives the first latch tongue 400, the fourth elastic member 530a is stretched to move the second latch tongue 510 a.

The moving direction of the first locking tongue 400 is parallel to the moving direction of the second locking tongue 510a, the angle between the axis of the fourth elastic member 530a and the second locking tongue 510a is greater than 90 °, and the fourth elastic member 530a always applies a backward component to the second locking tongue 510a in the process of being stretched, so that the fourth elastic member 530a drives the second locking tongue 510a when being stretched to a certain extent.

The inventor has found that during the operation of the locking mechanism, the second latch 510a may not be operated in place, and the handle 200 may not be opened, and further, the inventor has found that the failure is caused by the fourth elastic member 530a being deformed and easily separated from the operating member 600 or the first latch 400. The first stop assembly 500a is thus further modified such that the first stop assembly 500a includes an adapter 540 a.

The adaptor 540a is connected to one end of the fourth elastic member 530a far from the second latch tongue 510a, and the fourth elastic member 530a is connected to the operating member 600 or the first latch tongue 400 through the adaptor 540 a. The adaptor 540a is not easily deformed relative to the fourth elastic member 530a, and can ensure stable linkage with the operating member 600 or the first latch tongue 400. Compared with the direct connection by using the end of the fourth elastic member 530a, the adaptor 540a at the end of the fourth elastic member 530a is increased in the target, and the operation difficulty of assembling the adaptor 540a in the lock cylinder in a designed manner is lower.

The adapter 540a may be directly connected to the operating member 600 or the first latch tongue 400, or may be in other forms.

Fig. 12 shows a structure of the adapter 540a, the adapter 540a is an L-shaped rod, one end of the L-shaped rod is connected to the fourth elastic member 530a, and the other end of the L-shaped rod is in inclined-plane fit with the first locking tongue 400.

The first latch 400 further has a second protrusion, the second protrusion has a second inclined surface 440a, and the other end of the L-shaped lever acts on the second inclined surface 440 a. It should be noted that at least one of the second protrusion and the adaptor 540a may have a slope, in this embodiment, the second protrusion and the adaptor 540a both have slopes, and the slope of the second protrusion (i.e., the second slope 440a) fits the slope of the adaptor 540 a.

To further ensure the moving stability of the adaptor 540a, optionally, a second protrusion is also formed on the inner wall of the aforementioned through hole, and an L-shaped rod is inserted into the through hole of the first latch 400 and engaged with the second inclined surface 440 a. So that the second inclined surface 440a and the adaptor 540a form a guiding fit to drive the second latch 510a, and the through hole and the adaptor 540a form a guiding fit to make the adaptor 540a move stably and not easily disengage from the first latch 400. Through the combination of the through hole and the second inclined surface 440a, the stability of the fit between the adaptor 540a and the first latch tongue 400 is improved, and no additional component is added between the adaptor 540a and the first latch tongue 400 or between the adaptor 540a and the first latch tongue 400, so that the structure is simple and compact.

In the adaptor 540a shown in fig. 12, the second inclined surface 440a presses on the adaptor 540a, and the first latch tongue 400 presses the adaptor 540a downward when moving to the first unlocking position, so as to pull the fourth elastic member 530a to unlock the second latch tongue 510a with a delay.

When the handle 200 is opened and the second elastic member 450 drives the first locking tongue 400 to return to the first locking position, the adaptor 540a moves up along the second inclined surface 440a, so that one leg of the fourth elastic member 530a moves up to the return position; the leg of the fourth elastic element 530a connected to the second latch 510a is driven by the third elastic element 520a to return, that is, while the third elastic element 520a drives the second latch 510a to return, the second latch 510a drives the leg of the fourth elastic element 530a to return. Thus, both legs of the fourth elastic member 530a return to their original positions.

In this scheme, the force that the human hand applies to the operation member 600 is mainly used to overcome the friction generated when the first latch 400 is retracted and stretch the fourth elastic member 530 a. In the process of moving the first latch 400 to the first unlocking position, due to the effect of the second latch 510a, the friction force applied to the first latch 400 is small, and the pulling force of the fourth elastic member 530a reaches the critical value required for driving the second latch 510a after the first latch 400 is unlocked, so that the force required to be applied to the operating member 600 in the process of unlocking the first latch 400 is always small.

In some embodiments, the adaptor 540a shown in fig. 12 may also be connected to the push rod 610 of the operating device 600 to ensure the stable linkage of the second latch 510 a.

Fig. 13 shows another structure of the adaptor 540a, and it can be seen that the adaptor 540a is a flat plate or straight rod, one end of the adaptor 540a is connected to the fourth elastic member 530a, and the other end is connected to the push rod 610 of the operating member 600. When the operating element 600 is pressed, the push rod 610 and the adaptor 540a act synchronously, the push rod 610 drives the first latch tongue 400 to move to the first unlocking position, and simultaneously drives the adaptor 540a to move downwards to stretch the fourth elastic element 530a, so that the second latch tongue 510a is driven to retract to the second unlocking position in a delayed manner.

Fig. 14 shows a further configuration of the adapter 540a, the adapter 540a of fig. 14 being connected to the actuating member 600, while the adapter 540a is also in angled engagement with the first latch 400, the adapter 540a bearing on the second angled surface 440 a. When the operating member 600 is pressed, the push rod 610 and the adaptor 540a act synchronously, the push rod 610 instantly pushes the first lock tongue 400 to retract to the first unlocking position, and the adaptor 540a drives the second lock tongue 510a to retract to the second unlocking position in a delayed manner through the fourth elastic member 530 a.

When the operating member 600 is pressed down, the first latch 400 has two force bearing surfaces, namely a first inclined surface 430 and a second inclined surface 440a, and under the condition that the manual operating force is the same, the local pressure on the first latch 400 is reduced, so that the first latch 400 is not easy to damage.

In some embodiments, two through holes may be provided, and the push rod 610 and the adaptor 540a are respectively fitted in the two through holes to further define the moving space of the push rod 610 and the adaptor 540a, so that the push rod 610 and the adaptor 540a are not easily swayed relative to the first latch 400 when moving, and further improve the stability of the operating member 600 and the adaptor 540 a.

To further facilitate the driving of the second latch tongue 510a to unlock, the force required to unlock the second latch tongue 510a is also small, the second latch tongue 510a is configured as a ball, and the second fitting portion 220 is configured as a spherical groove formed on the handle 200, so that, macroscopically, the contact between the second latch tongue 510a and the handle 200 can be regarded as being converted from a surface contact to a point contact, and thus the friction between the second latch tongue 510a and the handle 200 is reduced. And, when second spring bolt 510a begins to move to the second unblock position, produce the clearance immediately between marble and the spherical recess, this makes the contact area of marble and spherical recess reduce rapidly to play the effect that reduces frictional force and the required drive power of removal second spring bolt 510a rapidly, thereby further solve the inconvenient problem of unblock.

Alternatively, the second latch tongue 510a is configured as a pull rod except that the front end is configured as a marble, the pull rod passes through the third elastic member 520a to play a role of guiding and stabilizing, and a mounting hole is formed at an end far from the marble, and the leg of the fourth elastic member 530a is inserted into the mounting hole.

In this embodiment, only one second locking tongue 510a and one second fitting portion 220 fitted thereto are provided, and in other embodiments, a plurality of second locking tongues 510a and a plurality of corresponding second fitting portions 220 may be provided to secure the locking handle 200 in the case of a small friction force. Alternatively, in other embodiments, a second lock tongue 510a may be provided, where the second lock tongue 510a has a plurality of balls arranged in parallel, and the movable body has a plurality of spherical grooves arranged in parallel with the balls.

In this embodiment, the handle 200 uses the rotation shaft as a fulcrum, and in order to further reduce the friction force applied to the first lock tongue 400, the distance between the second matching portion 220 and the rotation shaft is optionally greater than the distance between the first matching portion 210 and the rotation shaft. According to the moment balance principle, the handle 200 is used as a fulcrum, the moment arm at the first matching portion 210 is smaller than the moment arm at the second matching portion 220, and the reaction force required to be provided by the first latch tongue 400 is greater than the reaction force required to be provided by the second latch tongue 510a to resist the first elastic force of the first elastic member 300. Therefore, the friction force between the second latch tongue 510a and the handle 200 is smaller than the friction force between the first latch tongue 400 and the handle 200, so that the driving force required for moving the second latch tongue 510a is ensured to be smaller under the condition that the first latch tongue 400 can be unlocked in a labor-saving manner, and the problem of inconvenience in unlocking is further solved.

To further facilitate the unlocking of the second locking tongue 510a, optionally, the length of the second locking tongue 510a inserted into the second matching portion 220 is smaller than the length of the first locking tongue 400 inserted into the first matching portion 210, so that the contact surface between the second locking tongue 510a and the movable body is smaller than the contact surface between the first locking tongue 400 and the movable body, thereby further reducing the sliding friction force which needs to be overcome by the unlocking handle 200.

For manual unlocking by the operating element 600 in the present embodiment, the friction force of the first latch tongue 400 is reduced by providing the second latch tongue 510a, and the friction force of the second latch tongue 510a is reduced in the above manner, so that the driving force required for unlocking the handle 200 is greatly reduced, and the operability is improved.

For unlocking in other manners in other embodiments, for example, for unlocking by using an electric driving device, the driving force required for unlocking the handle 200 is reduced, which can reduce the power consumed by the motor, achieve the effect of saving power, and facilitate the miniaturization of the motor.

This embodiment also provides another stop assembly, as shown in fig. 14-22, and will be referred to as a second stop assembly 500b for convenience of description.

As shown in fig. 15 and 16, the second limiting assembly 500b includes an electromagnet 510b, the electromagnet 510b being configured to be energized to attract the handle 200 when the first latch 400 is moved to the first unlocked position, and configured to be de-energized to release the handle 200 when the first latch 400 is moved to the first unlocked position.

That is, the electromagnet 510b is used to share the force applied to the first latch 400 to reduce the friction force applied to the first latch 400, and when the first latch 400 moves to the first unlocking position, the electromagnet 510b is de-energized to cancel the attraction force, so that the handle 200 can be opened by the first elastic member 300.

In order to be attracted, the handle 200 is made of a magnetically permeable material, such as a metal material like iron, and the second mating portion 220 of the handle 200 may be an armature 240b disposed on the handle 200, and the electromagnet 510b locks the handle 200 by attracting the armature 240 b.

The second position limiting assembly 500b further includes a control circuit 520b and a trigger switch 521b for controlling the electromagnet 510 b. The control circuit 520b is arranged in the lock cylinder of the base body 100, the trigger switch 521b is arranged on the control circuit 520b, the electromagnet 510b is electrically connected with the control circuit 520b, and the control circuit 520b is activated when the trigger switch 521b is triggered, so that the control circuit 520b controls the electromagnet 510b to be powered on and off.

To save power, the control circuit 520b is configured to be activated during the movement of the first latch 400 to the first unlock position, control the electromagnet 510b to electrically attract the handle 200 when activated, and control the electromagnet 510b to be powered off to withdraw the attraction force after the first latch 400 moves to the first unlock position.

The control circuit 520b may be configured to control the electromagnet 510b to be powered off after the electromagnet 510b is controlled to be powered on for a period of time, so as to achieve the function of delayed unlocking, in this embodiment, the limiting assembly further includes a detection unit connected to the control circuit 520b, so as to send a power-off signal when the first latch 400 moves to the first unlocking position, and the control circuit 520b controls the electromagnet 510b to be powered off according to the power-off signal.

By arranging the detection unit, the situation that the first lock tongue 400 is not unlocked and the electromagnet 510b cancels the adsorption force is avoided, so that the situation that the first lock tongue 400 is difficult to unlock due to sudden increase of the friction force is avoided.

And this detecting element's setting can also realize opening the activity body when first spring bolt 400 just unblock, reduces the delay time of opening the activity body, promotes to use and experiences.

The detection unit comprises an identification element 530b and a sensing element 540b, the identification element 530b is mounted on the first lock tongue 400, the sensing element 540b is arranged on the control circuit 520b, the position of the first lock tongue 400 can be accurately shown due to the fact that the identification element 530b and the first lock tongue 400 are relatively fixed, when the sensing element 540b senses the identification element 530b, it is proved that the first lock tongue 400 reaches the first unlocking position, and at the moment, the control circuit 520b immediately controls the electromagnet 510b to be powered off.

The types of identification elements 530b and sensing elements 540b are various:

if the sensing element 540b is a hall element, the identification element 530b is a permanent magnet arranged on the latch bolt, such as a magnetic steel, and the hall element senses a magnetic field on the permanent magnet, it is proved that the first latch bolt 400 has reached the first unlocking position, and at this time, the control circuit 520b immediately controls the electromagnet 510b to power off;

for another example, the sensing element 540b is an infrared detector, the identification element 530b is a shielding portion formed on the latch bolt, and when the identification element 530b shields the infrared ray emitted by the infrared detector, it proves that the first latch bolt 400 has reached the first unlocking position, and the control circuit 520b immediately controls the electromagnet 510b to be powered off.

In other embodiments, other suitable identification elements 530b and sensing elements 540b may be used for detection, which are not listed here.

When the locking mechanism is provided with the second limiting assembly 500b, the handle 200 is normally closed and locked by the first locking tongue 400, as shown in fig. 17 and 18, and in order to save electric energy, the electromagnet 510b can be in a power-off state.

When it is required to unlock the handle 200, the operating member 600 is pressed, the operating member 600 acts on the first inclined surface 430 through the first push rod 610 to drive the first latch tongue 400, and at the same time, the operating member 600 or the first latch tongue 400 activates the trigger switch 521b, so as to activate the control circuit 520 b. The control circuit 520b controls the electromagnet 510b to electrify and adsorb the handle 200 so as to reduce the acting force of the handle 200 on the first latch tongue 400, so that the first latch tongue 400 can move to the first unlocking position only by overcoming small friction force.

When the first bolt 400 reaches the first unlocking position, the sensing element 540b senses the identification element 530b to send a power-off signal, and the control circuit 520b controls the electromagnet 510b to be powered off, as shown in fig. 20 and 21, and at this time, the handle 200 is opened under the first elastic force applied by the first elastic member 300.

When the handle 200 is opened, the operating member 600 is released, the second elastic member 450 drives the first latch 400 to reset, and the first latch 400 drives the operating member 600 to reset.

In order to activate the trigger switch 521b only during the movement of the first latch tongue 400 to the first unlocking position, and the first latch tongue 400 does not activate the trigger switch 521b during the return to the first locking position, optionally, the locking mechanism further includes a movable ball 620b, as shown in fig. 19, a sinking groove 611b is formed on the first push rod 610, the sinking groove 611b is used for accommodating the movable ball 620b, and a guide slope connected with the sinking groove 611b is formed on the first push rod 610. In other embodiments, the sinking groove 611b and the guiding slope may be located on the first latch 400.

When the handle 200 is closed without unlocking, the movable ball 620b is received in the sinking groove 611b, which is the case shown in fig. 19.

When it is required to unlock the handle 200, as shown in fig. 22, the operating member 600 drives the first push rod 610 to move, the first push rod 610 moves relative to the movable ball 620b, so that the movable ball 620b moves away from the sinking groove 611b along the guiding slope, and the guiding slope drives the movable ball 620b to move towards the trigger switch 521b, thereby activating the trigger switch 521 b.

After the handle 200 is opened, the second elastic member 450 drives the first locking tongue 400 to return, the first locking tongue 400 drives the first push rod 610 and the operating member 600 to return, and during the return process, the movable ball 620b returns to the sinking groove 611b along the guiding slope, thereby leaving the trigger switch 521 b. During the process of returning the first latch 400 to the first latching position, the trigger switch 521b is not activated, so as to prevent the control circuit 520b from being accidentally activated and consuming electricity.

An elastic cushion 700 is arranged between the movable ball 620b and the trigger switch 521b, and the elastic cushion 700 is used for isolating the movable ball 620b from the trigger switch 521b so as to prevent the trigger switch 521b from being worn. Meanwhile, the elastic cushion 700 ensures that the movable ball 620b is always pressed against the sinking groove 611b and the guiding inclined plane, so as to prevent the movable ball 620b from falling off when moving.

The electric energy used for the operation of the locking mechanism provided by this embodiment may be supplied by connecting to the commercial power, or may be supplied by using the battery 230, in this embodiment, the battery 230 is used for supplying power. The battery 230 is provided in the case 110 of the base 100, and is connected to the electronic components inside the key cylinder, such as the control circuit 520b and the electromagnet 510b, through wires.

To avoid failure of the operating member 600, or failure of the electric drive means for driving the first latch 400 in other embodiments, the locking mechanism in this embodiment is further provided with a mechanical lock cylinder 800 for emergency unlocking. When a matching key 810 is inserted into the mechanical lock cylinder 800 and turned, the mechanical lock cylinder 800 pushes the first latch 400 to retract.

Referring to fig. 5, the mechanical lock cylinder 800 is disposed on the handle 200, and a cam is disposed on the mechanical lock cylinder 800, and when the mechanical lock cylinder 800 rotates, the cam pushes the first latch 400 to a first unlocking position to unlock the handle 200.

The principle of unlocking the mechanical lock cylinder 800 is the same for the locking mechanism provided with the first stop assembly 500a and the locking mechanism provided with the second stop assembly 500 b.

For the locking mechanism with the first limiting assembly 500a, when the first bolt 400 is pushed to the first unlocking position by the mechanical lock cylinder 800, a human hand pulls the handle 200, and can push the marble (i.e., the second bolt 510a) to the second unlocking position to compress the third elastic member 520a, so as to unlock the second bolt 510 a.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A locking mechanism, comprising:

a substrate;

2. The lock mechanism as claimed in claim 1, wherein the movable body is connected to the base through a shaft, and the movable body has a first engaging portion and a second engaging portion, the first engaging portion is engaged with the first latch, the second engaging portion is engaged with the position-limiting member, and the first engaging portion is in clearance fit with the first latch.

3. The lock mechanism of claim 2, wherein the first engagement portion is spaced from the shaft by a distance less than the second engagement portion.

4. The locking mechanism of claim 1, further comprising:

the operating piece is arranged on the base body and is in linkage with the first lock tongue, and the operating piece is used for driving the first lock tongue to move to the first unlocking position.

5. The latch mechanism of claim 4, wherein the limit assembly includes a second latch tab movably disposed on the base to have a second latched position and a second unlatched position, the second latch tab being capable of latching the movable body in the closed position when in the second latched position;

6. The lock mechanism of claim 5, wherein the limiting assembly includes a third elastic member and a fourth elastic member, the third elastic member is abutted between the base and the second lock tongue to apply a third elastic force to the second lock tongue so as to drive the second lock tongue to move to the second locking position, and the second lock tongue is connected with the operating member or the first lock tongue through the fourth elastic member.

7. The locking mechanism of claim 6, wherein the limiting assembly comprises an adapter connected to an end of the fourth elastic member away from the second lock tongue, and the adapter is linked with the operating member or the first lock tongue.

8. The locking mechanism of claim 7, wherein the adapter engages the first latch ramp.

9. The locking mechanism of claim 7 or 8, wherein the adaptor member is fixedly connected to the operating member.

10. The lock-out mechanism of claim 7, wherein the first latch tongue is formed with a through hole, and the operating member is disposed through the through hole and engaged with the first latch tongue inclined surface.

11. The lock mechanism of claim 9, wherein the direction of movement of the first bolt is parallel to the direction of movement of the second bolt, and the angle between the axis of the fourth resilient member and the second bolt is greater than 90 °.

12. The lock mechanism as claimed in claim 6, wherein the movable body is formed with a spherical recess, and one end of the second latch is formed with a ball engaged with the spherical recess.

13. The locking mechanism of any of claims 1-4, wherein the limit component comprises an electromagnet configured to be energized to attract the movable body when the first tab moves to the first unlocked position and configured to be de-energized to release the movable body when the first tab moves to the first unlocked position.

14. The locking mechanism of claim 1, wherein the movable body is a handle having one end rotatably connected to the base.

15. The locking mechanism of claim 14, further comprising:

the third bolt is used for locking an external object;