CN217129191U

CN217129191U - Lock core, tool to lock and unblock head

Info

Publication number: CN217129191U
Application number: CN202121468552.7U
Authority: CN
Inventors: 王振贤; 刘晋武
Original assignee: Changyuan Contron Power Security Technology Co Ltd
Current assignee: Changyuan Contron Power Security Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-08-05
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a lock core, tool to lock and unblock head, the lock core includes: the lock body assembly comprises a lock cylinder shell and a rotary core, wherein the inner wall of the lock cylinder shell is axially provided with a limiting groove and circumferentially provided with a guide groove, the limiting groove and the guide groove are communicated in an intersecting manner, the rotary core is rotatably arranged inside the lock cylinder shell and comprises a limiting rod, the side surface of the limiting rod is provided with a limiting block, and the limiting rod can move in the axial direction relative to the rotary core and is positioned in the limiting groove or the guide groove; the sheet spring is provided with a bending part, the bending part is abutted against one end of the limiting rod, and can generate elastic force for enabling the limiting rod to move in the axial direction relative to the rotating core. The utility model provides a current lock core thickness thick, be difficult to the problem of adaptation in ultra-thin door.

Description

Lock core, tool to lock and unblock head

Technical Field

The utility model relates to a lock core technical field particularly, relates to a lock core, tool to lock and unblock head.

Background

The lockset is visible everywhere in daily life of people, and is used for protecting the life and property of people. The core anti-theft part of the lock is the lock core, and the performance of the lock core directly influences the anti-theft performance of the whole lock.

The length of lock core is generally fixed, in order to protect the lock core and avoid it to be destroyed, influence the effect of theftproof, all select the lock core of AND gate thickness assorted usually, make the lock core all have certain thickness apart from the front and back panel of door. However, with the development of the reduced style, people tend to make the thickness of various doors thinner, so that the occupied space of the doors is smaller, and thus a lock cylinder with thinner thickness is required. However, the thickness of the existing lock cylinder is thick, the lock cylinder is difficult to adapt to an ultrathin door, and the development of the ultrathin door is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be the thickness of current lock core is thicker, is difficult to the adaptation in ultra-thin door.

In order to solve the above problem, the utility model provides a lock core, include:

the lock body assembly comprises a lock cylinder shell and a rotary core, wherein the inner wall of the lock cylinder shell is axially provided with a limiting groove and circumferentially provided with a guide groove, the limiting groove and the guide groove are communicated in an intersecting manner, the rotary core is rotatably arranged inside the lock cylinder shell and comprises a limiting rod, the side surface of the limiting rod is provided with a limiting block, and the limiting rod can move in the axial direction relative to the rotary core and is positioned in the limiting groove or the guide groove;

the sheet spring is provided with a bending part, the bending part is abutted against one end of the limiting rod, and can generate elastic force for enabling the limiting rod to move in the axial direction relative to the rotating core.

Furthermore, an unlocking hole is formed in one end of the lock cylinder shell, a limiting portion surrounding the unlocking hole is arranged at one end of the lock cylinder shell, the limiting portion is matched with the bending portion, and the limiting rod is limited to move relative to the lock cylinder shell in the axial direction.

Furthermore, be equipped with unblock head locating component on the spacing portion, unblock head locating component includes at least one lug and at least one recess, shown lug with the recess is used for the angular positioning when unblock head inserts.

Further, the core includes still includes the lock courage, the lock courage includes the unlocking post and centers on the blade that the unlocking post set up, the blade with unlocking the chamber has been seted up between the unlocking post, at least two the blade sets up along the axial, and arbitrary two are adjacent form between the blade and hold the chamber that holds of gag lever post.

Furthermore, the limiting rod and the two adjacent blades are arranged in a sliding mode, and the peripheral surface of the limiting rod is abutted against the side surfaces of the two adjacent blades.

Furthermore, the limiting rod further comprises an unlocking part and a stress part, the unlocking part is arranged in the unlocking hole or in a space axially extending from the unlocking hole to the inside of the lock cylinder shell, the stress part is arranged on one side opposite to the unlocking part and is abutted against the bent part, and the limiting block is arranged on the side face close to one side of the stress part.

Furthermore, the leaf spring is provided with a through hole and at least two bending parts arranged around the circumferential surface of the outer side of the through hole, and the two bending parts are bent towards one side.

Furthermore, each bending part is arc-shaped strip-shaped, a protrusion is formed at one end, far away from the through hole, of each bending part, and the protrusion is abutted to the limiting rod.

The utility model also provides a lockset, include as above arbitrary the lock core.

The utility model also provides an unblock head, unblock head includes the head, the mating holes has been seted up to the tip of head and has been centered on the unblock portion of mating holes, unblock portion is provided with jut and depressed part along circumference.

The utility model discloses a set up the gag lever post that has the stopper on changeing the core, and set up axial spacing groove and circumference guide way that use with the stopper cooperation at the inner wall of lock core shell, support and press the gag lever post through the unblock head, make the stopper slide into the circumference guide way by the axial spacing groove, thereby make changeing the core and can rotate relative to the lock core shell, and through setting up the leaf spring that has the kink, and make the kink and the one end looks butt of gag lever post, under the effect of leaf spring reset elasticity, promote the relative commentaries on classics core of gag lever post and move in the axial direction, thereby make the stopper slide into the axial spacing groove by the circumference guide way, and imbed in the spacing groove, make the lock core unable to rotate, realize shutting; the thickness of the compressed leaf spring is lower, and only one leaf spring is required after the leaf spring is compressed to the limit position, so that compared with the use of a spiral spring, the thickness of the spring is greatly reduced, the thickness of the lock cylinder can be reduced, and the ultrathin lock cylinder can be manufactured; in addition, the whole lock cylinder is simple and compact in structure, the leaf spring is simple to assemble and low in cost, and the manufacturing cost of the lock cylinder can be reduced.

Drawings

Fig. 1 is an exploded schematic view of a lock cylinder in an embodiment of the present invention;

fig. 2 is a schematic structural view of a lock cylinder case in an embodiment of the present invention;

fig. 3 is a schematic structural view of a limiting rod in an embodiment of the present invention;

FIG. 4 is a schematic front view of a leaf spring according to an embodiment of the present invention;

FIG. 5 is a schematic side view of a leaf spring according to an embodiment of the present invention;

fig. 6 is a schematic rear view of the lock cylinder in the embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view in the direction B-B of the lock cylinder of FIG. 6 when the lock cylinder is in an unlocked condition;

FIG. 8 is a schematic cross-sectional view along direction B-B of the lock cylinder of FIG. 6 when the lock cylinder is in a locked condition;

fig. 9 is a schematic front view of the unlocking head in the embodiment of the present invention.

Description of reference numerals:

1-a lock cylinder shell; 2-core rotation; 3-a leaf spring; 4-unlocking the lock head; 5-a screw;

11-unlocking the hole; 12-a limiting part; 13-a guide groove; 14-a limiting groove; 21-a lock cylinder; 22-a limiting rod; 31-a through hole; 32-a bending part; 41-a head; 42-a mounting portion;

121-bumps; 211-unlocking cylinder; 212-a blade; 213-a containment chamber; 221-unlocking; 222-a force-bearing portion; 223-a limiting block; 321-a protrusion; 411-mating holes; 412-unlock;

4121-a protrusion; 4122-recess.

Detailed Description

The length of lock core is generally fixed, avoids it to be destroyed in order to protect the lock core, influences its theftproof effect, through all selecting the lock core of the thickness assorted with the door. However, with the development of the reduced style, people tend to make the thickness of various doors thinner, so that the occupied space of the doors is smaller, and thus a lock cylinder with thinner thickness is required. However, the thickness of the existing lock cylinder is thick, and the lock cylinder is difficult to adapt to an ultrathin door.

Although the prior art has the problem that the thickness of the lock cylinder is reduced by installing the coil spring in the lock cylinder and compressing the spring, even if the coil spring is compressed to the limit, the coil spring still has a certain thickness, the reduction of the thickness of the lock cylinder is limited, and the ultrathin lock cylinder is difficult to manufacture.

In order to solve the technical problem, the embodiment of the utility model provides a lock core, tool to lock and unblock head through the leaf spring that adopts to have specific structure in the lock core, compares with using coil spring among the prior art, greatly reduced the thickness of spring, can reduce the thickness of lock core to can realize making ultra-thin lock core.

The technical solutions in the embodiments of the present application will be clearly and exhaustively described below with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In addition, in the description of the present invention, "at least one" means one or more unless specifically limited otherwise.

In the description of the embodiments of the present application, the description of the term "some preferred embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one preferred embodiment or preferred example of the present invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1, the present embodiment provides a lock cylinder including a lock cylinder assembly and a flat spring 3, wherein the lock cylinder assembly includes a lock cylinder housing 1 and a rotary cylinder 2.

As shown in fig. 1 and 2, the cylinder case 1 has a front end surface (the front end in this application refers to an end portion into which the unlocking head of the key is inserted), and the front end surface is provided with an unlocking hole 11 and an annular limiting portion 12 surrounding the unlocking hole 11, and the limiting portion 12 and the side wall of the cylinder case 1 are integrally formed. The rear end of the lock cylinder shell 1 (the rear end in this application refers to the end far away from the front end face of the lock cylinder shell 1) is open, and a leaf spring 3 is arranged at the opening. The inner wall of the lock cylinder shell 1 near the opening is provided with a guide groove 13 along the circumferential direction (the circumferential direction in the application refers to the direction around the circumference of the lock cylinder shell 1), the inner wall of the lock cylinder shell 1 between the guide groove 13 and the limiting part 12 is provided with a plurality of limiting grooves 14 along the axial direction (the axial direction in the application refers to the direction in which the central axis of the lock cylinder shell 1 is located and the direction parallel to the central axis), and the plurality of limiting grooves 14 are communicated with the guide groove 13 in an intersecting manner. The rotary core 2 is rotatably arranged inside the lock core shell 1, and the limiting part 12 and the flat spring 3 limit the movement of the rotary core 2 relative to the lock core shell 1 in the axial direction.

Referring to fig. 2, the limiting portion 12 is provided with an unlocking head positioning component, and the unlocking head positioning component includes at least one protrusion 121 and at least one groove (not labeled in the figure) for angular positioning when the key is inserted. At least two limiting grooves 14 are formed in the inner wall of the lock cylinder shell 1 along the axial direction, and each limiting groove 14 is arranged in one-to-one correspondence with the lug 121 or the groove (that is, the position where the limiting groove 14 is formed corresponds to the position where the lug 121 or the groove is formed in the limiting portion 12).

Referring to fig. 1, the rotary core 2 includes a lock cylinder 21 and a limiting rod 22, the lock cylinder 21 includes an unlocking column 211 and a blade 212 disposed around the outer side of the unlocking column 211, an unlocking cavity (not shown) is disposed between the blade 212 and the unlocking column 211, and the unlocking head is inserted into the unlocking cavity through the unlocking hole 11 for unlocking. At least two blades 212 are arranged along the axial direction, and an accommodating cavity 213 for accommodating the limiting rod 22 is formed between any two adjacent blades, namely, the limiting rod 22 and the blades 212 are arranged on the circumferential surface of the outer side of the unlocking column 211 in a surrounding mode at intervals; the cross-sectional shape of each blade 212 is similar to a sector, and two side surfaces of each blade 212 are arc-shaped to form a circular arc-shaped accommodating cavity 213 matched with the shape of the limiting rod 22, so that the shape of the limiting rod 22 can be better matched, the limiting rod 22 is arranged in the accommodating cavity 213 in a sliding manner, the limiting rod 22 can move in the axial direction relative to the blades 212, the peripheral surface of the limiting rod 22 is abutted to the side surfaces of the blades 212, and when the limiting rod 22 rotates under the action of external force, the lock container 21 can be driven to rotate to unlock.

It should be noted that, in the present application, the number of the limiting rod 22, the blade 212, and the limiting groove 14 is not further limited, and those skilled in the art can set the limiting rod, the blade 212, and the limiting groove 14 according to actual needs as long as the locking function can be well achieved and the unlocking is convenient, but the number of the limiting rod 22, the blade 212, and the limiting groove 14 is not less than two; similarly, the number of the protrusions 121 and the grooves which are matched with the limiting rod 22 is not further limited, the number of the protrusions 121 and the grooves is determined according to the number of the limiting rod 22, and the number of the protrusions 121 and the grooves is not less than one.

In order to achieve better locking effect, in some preferred embodiments, the number of the limiting rod 22, the number of the blades 212 and the limiting groove 14 are four, and the number of the convex blocks 121 and the number of the concave grooves are two.

As shown in fig. 3, the limiting rod 22 includes an unlocking portion 221, a force receiving portion 222, and a limiting block 223, wherein the limiting block 223 is disposed on a side surface of the limiting rod 22 and is used for limiting a position of the limiting rod 22; the unlocking part 221 is used for enabling the unlocking head to be pressed when the unlocking head is inserted into the unlocking cavity, and when the unlocking device is used, the unlocking head presses the unlocking part 221 and pushes the limiting block 223 to slide out of the limiting groove 14 and slide into the guide groove 13, so that the rotary core 2 can rotate relative to the lock core shell 1 to realize unlocking; the stress part 222 is used for abutting against the leaf spring 3, so that under the action of the elastic force of the leaf spring 3, the limiting rod 22 is pushed to rotate, the limiting block 223 moves towards the limiting part 12, the limiting block 223 is clamped in the limiting groove 14, the rotating core 2 cannot rotate, and locking is achieved.

Specifically, the unlocking part 221 is arranged on the front end face of the limiting rod 22, a part of the unlocking part 221 is arranged in the unlocking hole 11 or in a space where the unlocking hole 11 axially extends towards the inside of the lock cylinder shell 1 (i.e. in a space where the unlocking hole 11 extends towards the opening end of the lock cylinder shell 1), and the unlocking part 221 is arranged over against the projection 121 or the groove, so that when the unlocking head is inserted from the unlocking hole, the unlocking head can be in contact with the limiting rod 22 and can form a pressing action; the force receiving portion 222 is provided on the side opposite to the unlocking portion 221, and the force receiving portion 222 is located in the cylinder case 1, whereby the thickness of the cylinder can be further reduced by setting both the stopper rod 22 and the cylinder core 21 in the cylinder case 1.

The stopper 223 sets up the side at gag lever post 22, and this application does not further inject the stopper 223 setting at the concrete position of gag lever post 22 side, as long as can guarantee that gag lever post 22 slides out of spacing groove 14 in the promotion of unblock head to slide to in the guide way 13, and under the spring action of leaf spring 3, can follow and slide into spacing groove 14 in the guide way 13. In order to further reduce the thickness of the lock cylinder and make it fit to an ultra-thin door, in some preferred embodiments, the stopper 223 is disposed on a side surface near the force receiving portion 222, and a rear end surface of the stopper 223 is disposed flush with the force receiving portion 222.

As shown in fig. 4 and 5, the leaf spring 3 is provided with a through hole 31 and a plurality of bending portions 32 sequentially surrounding the circumferential surface outside the through hole 31 to form a shape similar to a "wind-fire wheel", wherein the through hole 31 is used for assembling the leaf spring 3 with the lock cylinder shell 1 and the rotary core 2 into a whole, the plurality of bending portions 32 are all bent towards one side and are bent towards one side close to the limiting portion 12, and each bending portion 32 is abutted against the stress portion 222, so that when the unlocking head abuts against the limiting rod 22, the leaf spring 3 can be pushed to be bent and deformed towards one side far away from the limiting portion 12, and thus in a locking state, a reset elastic force can be generated to push the limiting rod 22 to rotate and move along the axial direction and towards one side close to the limiting portion 12, so that the limiting block 223 moves into the limiting groove 14 and is clamped in the limiting groove 14.

In some embodiments, the through-hole 31 is a threaded hole, and the screw 5 passes through the through-hole 31 to assemble the leaf spring and the cylinder case 1 and the rotary core as one body.

Each bending part 32 is arc-shaped, the head of each bending part 32 (the head of the bending part 32 refers to the end close to the through hole 31) is connected to the circumferential surface of the outer side of the through hole 31, the cross-sectional area of the tail of each bending part 32 (the tail of the bending part refers to the end far away from the through hole 31) is increased to form a protrusion 321, and the cross-sectional shape of the protrusion 321 is similar to a C shape, so that the protrusion 321 with the larger cross-sectional area is abutted to the stress part 222 to increase the contact area between the bending part 32 and the limiting rod 22, and the limiting rod 22 can be pushed to move under the action of reset elasticity. The head of the bent portion 32 is bent to the tail of the bent portion 32 by a predetermined angle, which is not further limited in this application, and a person skilled in the art may determine the predetermined angle according to the elastic force of the flat spring 3, for example, the predetermined angle may be 5 degrees or 10 degrees.

It should be noted that, in the present application, the number of the bent portions 32 is the same as the number of the limiting rods 22, and the number of the bent portions 32 is not less than two, and the specific number can be set by those skilled in the art according to actual needs.

The lock core that this embodiment provided can be used in various tool to lock, for example can be used in tool to lock, electric power tool to lock or civilian tool to lock that the industry prevented that the mistake controlled the field used etc..

As shown in fig. 9, the present embodiment further provides an unlocking head 4, including: the unlocking device comprises a head part 41 and an assembly part 42, wherein a matching hole 411 and an annular unlocking part 412 surrounding the matching hole 411 are formed in the end part of the head part 41, the matching hole 411 is arranged at one end far away from the assembly part 42 and extends towards the direction of the assembly part 42 and is used for being matched with an unlocking column 211, the unlocking part 412 is circumferentially provided with a protruding part 4121 and a recessed part 4122, the number of the protruding part 4121 and the number of the recessed part 4122 are respectively the same as that of a bump 121 and a groove, each protruding part 4121 and each recessed part 4122 are respectively matched with each bump 121 and each groove in an unlocking head positioning part of a lock cylinder, and an unlocking head 4 is inserted into an unlocking hole 11 and then abuts against a limiting rod 22; the fitting portion 42 is used to fixedly fit the unlocking head 4 to the key handle.

In order to better achieve the locking function, in some preferred embodiments, the unlocking portion 412 is provided with two protrusions 4121 and two recesses 4122 along the circumferential direction, and the protrusion heights of the two protrusions 4121 (the protrusion heights in this application refer to the heights protruding in the axial direction of the head) and the recess depths of the two recesses 4122 (the recess depths in this application refer to the depths recessed in the axial direction of the head) are different, so that by providing the protrusions 4121 and the recesses 4122 with different depths, it is possible to distinguish different teeth, and it is more convenient for the unlocking head 2 to be accurately inserted into the unlocking hole 11.

The working principle of the lock cylinder provided in the present embodiment is explained with reference to fig. 6 to 8, wherein fig. 6 is a schematic rear view of the lock cylinder, and fig. 7 and 8 are schematic sectional views of the lock cylinder in the direction B-B in fig. 6 in an unlocked state and a locked state, respectively:

as shown in fig. 8, when the rotary core is located at a locking position relative to the lock core housing (the locking position of the present application refers to a position before the unlocking head of the key does not drive the rotary core to rotate), one end of the limiting rod abuts against the bending portion of the leaf spring, and under the action of the restoring elasticity of the leaf spring, the other end of the limiting rod is pushed to abut against the limiting portion of the lock core housing, and the limiting block on the limiting rod is embedded and slidably disposed in the limiting groove, so that the rotary core cannot rotate; as shown in fig. 7, when the unlocking head is inserted into the unlocking hole, the front end of the unlocking head is pressed backwards against the limiting rod, so that the limiting rod moves backwards along the axial direction relative to the lock cylinder shell, the limiting block moves to the position where the guide groove and the limiting groove are communicated in an intersecting manner, the limiting block enters the guide groove, when the key is twisted, the unlocking head drives the rotating core to rotate, and the rotating core is located at an unlocking position relative to the lock cylinder shell (the unlocking position in the application refers to the position where the unlocking head drives the rotating core to rotate).

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims

1. A lock cylinder, comprising:

2. The lock core according to claim 1, wherein an unlocking hole is formed at one end of the lock core shell, a limiting portion surrounding the unlocking hole is formed at one end of the lock core shell, and the limiting portion is matched with the bent portion to limit the movement of the limiting rod relative to the lock core shell in the axial direction.

3. The lock core according to claim 2, wherein the limiting portion is provided with an unlocking head positioning component, the unlocking head positioning component comprises at least one projection and at least one groove, and the projection and the groove are used for angular positioning when the unlocking head is inserted.

4. The lock core according to claim 1, wherein the rotary core further comprises a lock core, the lock core comprises an unlocking column and blades arranged around the unlocking column, an unlocking cavity is formed between each blade and the unlocking column, at least two blades are arranged along the axial direction, and an accommodating cavity for accommodating the limiting rod is formed between any two adjacent blades.

5. The lock core according to claim 4, wherein the limiting rod and two adjacent blades are slidably arranged, and the peripheral surface of the limiting rod abuts against the side surfaces of the two adjacent blades.

6. The lock core according to claim 2, wherein the limiting rod further comprises an unlocking portion and a force-receiving portion, the unlocking portion is disposed in the unlocking hole or a space of the unlocking hole extending axially toward the inside of the lock core shell, the force-receiving portion is disposed on a side opposite to the unlocking portion and abuts against the bent portion, and the limiting block is disposed on a side surface close to the force-receiving portion.

7. The lock core according to claim 1, wherein the leaf spring is provided with a through hole and at least two bent portions arranged around the circumference of the outer side of the through hole, and the two bent portions are bent toward one side.

8. The lock core according to claim 7, wherein each of the bent portions is an arc-shaped strip, and a protrusion is formed at an end of the bent portion away from the through hole, and abuts against the limiting rod.

9. A lock comprising a lock cylinder according to any one of claims 1 to 8.

10. The unlocking head is characterized by comprising a head, wherein a matching hole and an unlocking part surrounding the matching hole are formed in the end part of the head, and a protruding part and a recessed part are arranged on the unlocking part along the circumferential direction.