CN219952957U - Lock core and door lock - Google Patents

Abstract

The utility model discloses a lock cylinder and a door lock, and belongs to the technical field of security products. The lock core includes lock core body, two at least lock core extension pieces and first fastener, the axial dimensions of at least two in the at least two lock core extension pieces are different, first fastener is equipped with the shoulder hole along the axial of self respectively including continuous first fastening head and first fastening pole, the shoulder hole is including the first trompil and the second trompil that communicate in proper order, first trompil is used for supplying first fastening head to stretch into and supplies first fastening pole to run through, the lock core body is equipped with first fastening hole, first fastening hole can run through first trompil and the second trompil of lock core extension piece in proper order and stretch into first fastening hole, in order to connect lock core extension piece and lock core body. Therefore, the limitation of the axial dimension of the lock cylinder extension piece to the length of the first fastener is reduced, the lock cylinder extension piece and the lock cylinder body with different axial dimensions can be connected by using the first fastener with the same length, the assembly process is simplified, and the fault tolerance is higher.

Description

Lock core and door lock

Technical Field

The utility model belongs to the technical field of security products, and particularly relates to a lock cylinder and a door lock.

Background

The door lock generally comprises a lock body and a lock core, wherein the lock body is arranged in the door, the lock core is arranged in the lock body, the lock core is provided with a lock core hole, and a user can insert a key into the lock core hole to unlock. In the related art, the lock core comprises a lock core body and lock core extension pieces with different lengths, wherein the lock core body is provided with a first lock core hole, the lock core extension pieces are provided with a second lock core hole, the different lock core extension pieces are connected with the lock core body, the whole length of the lock core can be changed to match doors with different thicknesses, and a key can be sequentially inserted into the second lock core hole and the first lock core hole to unlock. However, in order to match doors with different thicknesses, the lock cylinder body needs to be connected with lock cylinder extension pieces with different sizes, fastening connection pieces with different lengths need to be equipped, and the lock cylinder extension pieces with different sizes are penetrated by using the fastening connection pieces with different lengths, so that the cost of parts is increased, and when the lock cylinder extension pieces and the lock cylinder body are connected according to the length of a required lock cylinder, the fastening connection pieces with proper lengths need to be selected for connection, so that the assembly is complex, and the fault tolerance rate is low.

Disclosure of Invention

The embodiment of the utility model aims to provide a lock cylinder and a door lock, which can solve the problems of high part cost and low fault tolerance of the lock cylinder in the related technology.

In a first aspect, an embodiment of the present utility model provides a lock cylinder, including a lock cylinder body, at least two lock cylinder extension pieces, and a first fastener, where at least two of the at least two lock cylinder extension pieces have different axial dimensions, the first fastener includes a first fastening head and a first fastening rod that are connected, each lock cylinder extension piece is provided with a stepped hole along its own axial direction, the stepped hole includes a first hole and a second hole that are sequentially communicated, the first hole is used for the first fastening head to extend into and for the first fastening rod to penetrate through, the lock cylinder body is provided with a first fastening hole, and the first fastening rod can sequentially penetrate through the first hole and the second hole of the lock cylinder extension piece and extend into the first fastening hole, so as to connect the lock cylinder extension piece and the lock cylinder body.

In a second aspect, an embodiment of the present utility model further provides a door lock, including the lock cylinder in the foregoing embodiment.

In the embodiment of the utility model, the first fastening head can be inserted into the first opening provided by the lock cylinder extension piece, so that the first fastening head can be immersed into the first opening, and the first fastening head cannot be directly exposed out of one side of the lock cylinder extension piece, which is opposite to the lock cylinder body, so that when the first fastening piece is connected with the lock cylinder extension piece and the lock cylinder body, the first fastening head can be inserted into the first opening, the limit of the axial dimension of the lock cylinder extension piece on the length of the first fastening piece is reduced, and the second opening with proper axial dimension is provided for the first fastening piece to penetrate through, namely, the lock cylinder extension piece and the lock cylinder body with different axial dimensions can be connected by using the first fastening piece with the same length. So set up, assembly process is simplified, installs simpler, and fault-tolerant rate is higher.

Drawings

FIG. 1 is a schematic diagram of a lock cylinder according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a lock cylinder disclosed in an embodiment of the present utility model;

FIG. 3 is a longitudinal cross-sectional view of a lock cylinder disclosed in an embodiment of the present utility model;

fig. 4 is a transverse cross-sectional view of a lock cylinder disclosed in an embodiment of the present utility model.

Reference numerals illustrate:

100-lock core body, 110-first fastening hole, 120-first lock core hole,

200-lock cylinder extension piece, 201-extension shaft, c-second lock cylinder hole, 202-ring body, 203-connecting protrusion, 204-step hole, a-first open hole, b-second open hole, 205-second connecting hole,

210-first lock cylinder extension, 211-second fastening hole, 220-second lock cylinder extension, 221-third fastening hole, 230-third lock cylinder extension,

300-first fastener, 310-first fastener head, 320-first fastener rod,

400-second fastener, 410-second fastener head, 420-second fastener rod,

500-third fastener, 510-third fastening head, 520-third fastening rod,

610-positioning groove, 620-boss,

700-shielding piece, 710-connecting piece, 711-first connecting hole, 720-shielding part, 730-shielding ring,

800-fourth fastener.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present utility model, fall within the scope of protection of the present utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The lock cylinder and the door lock provided by the embodiment of the utility model are described in detail through specific embodiments and application scenes thereof by combining the attached drawings.

Referring to fig. 1-4, the lock cylinder disclosed in the embodiment of the present utility model includes a lock cylinder body 100, at least two lock cylinder extension members 200, and a first fastener 300, wherein the lock cylinder body 100 can be connected with one of the at least two lock cylinder extension members 200 through the first fastener 300, and at least two of the at least two lock cylinder extension members 200 have different axial dimensions, so that the lock cylinder body 100 can be connected with the lock cylinder extension member 200 having different axial dimensions through the first fastener 300 to adjust the axial dimension of the lock cylinder.

Referring to fig. 1 and 3, the first fastener 300 includes a first fastening head 310 and a first fastening rod 320 connected to each other, each lock cylinder extension 200 is provided with a stepped hole 204 along its own axis, the stepped hole 204 includes a first hole a and a second hole b which are sequentially connected, the aperture of the first hole a is larger than that of the second hole b, the first hole a is used for the first fastening head 310 to extend into and for the first fastening rod 320 to penetrate, and the second hole b is only used for the first fastening rod 320 to penetrate, so that the first fastening head 310 cannot pass through the second hole b. Moreover, the lock cylinder body 100 is provided with a first fastening hole 110, and the first fastening rod 320 can sequentially penetrate through the first opening a and the second opening b of the lock cylinder extension 200 and extend into the first fastening hole 110 to connect the lock cylinder extension 200 and the lock cylinder body 100, and in the process that the first fastening rod 320 extends into the first fastening hole 110, the first fastening head 310 abuts against a connection part of the first opening a and the second opening b, that is, the first fastening head 310 is in limited fit with the lock cylinder extension 200 in the axial direction. Alternatively, the first fastening member 300 may be a first screw, the first fastening head 310 is a nut of the first screw, the first fastening rod 320 is a shaft of the first screw, and the first fastening hole 110 is a threaded hole.

Alternatively, the number of lock cylinder extensions 200 is two, the axial dimensions of the two lock cylinder extensions 200 are 5cm and 3cm, the axial dimensions of the second apertures b of the two lock cylinder extensions 200 may be equal, and the first aperture a of the lock cylinder extension 200 having an axial dimension of 5cm is 2cm longer than the first aperture a of the lock cylinder extension 200 having an axial dimension of 3cm, such that the first fastening head 310 extends into the first aperture a, and the first fastening rod 320 may extend through the stepped aperture 204 of any one lock cylinder extension 200 and into the first fastening aperture 110 without having to select a first fastening member 300 having a larger length due to the axial dimension of the lock cylinder extension 200 being oversized.

In the embodiment of the present utility model, since the first opening a provided in the lock cylinder extension 200 can allow the first fastening head 310 to extend into the first opening a, the first fastening head 310 may not be directly exposed at the side of the lock cylinder extension 200 facing away from the lock cylinder body 100, and then the first fastening head 310 may extend into the first opening a when the first fastening member 300 connects the lock cylinder extension 200 and the lock cylinder body 100, so that the limitation of the axial dimension of the lock cylinder extension 200 on the length of the first fastening member 300 is reduced, and the second opening b with a suitable axial dimension for each lock cylinder extension 200 may be provided for the first fastening member 300 to penetrate through, that is, the lock cylinder extension 200 and the lock cylinder body 100 with different axial dimensions may be connected by using the first fastening member 300 with the same length. So set up, assembly process is simplified, installs simpler, and fault-tolerant rate is higher.

In an alternative embodiment, at least two lock cylinder extensions 200 include a first lock cylinder extension 210 and a second lock cylinder extension 220, the first lock cylinder extension 210 having an axial dimension that is different than the axial dimension of the second lock cylinder extension 220. The lock cylinder body 100 is provided with a first fastening hole 110, the lock cylinder has a first installation state and a second installation state, under the condition that the lock cylinder is in the first installation state, the first fastening head 310 extends into the first opening a of the first lock cylinder extension 210, the first fastening rod 320 sequentially penetrates through the first opening a and the second opening b of the first lock cylinder extension 210 and extends into the first fastening hole 110 to connect the first lock cylinder extension 210 and the lock cylinder body 100, and at the moment, the axial dimension of the lock cylinder is the sum of the axial dimension of the lock cylinder body 100 and the axial dimension of the first lock cylinder extension 210; when the lock cylinder is in the second installation state, the first fastening head 310 extends into the first opening a of the second lock cylinder extension 220, and the first fastening rod 320 sequentially penetrates through the first opening a and the second opening b of the second lock cylinder extension 220 and extends into the first fastening hole 110 to connect the second lock cylinder extension 220 and the lock cylinder body 100, and at this time, the axial dimension of the lock cylinder is the sum of the axial dimension of the lock cylinder body 100 and the axial dimension of the second lock cylinder extension 220. Thus, whether the first lock cylinder extension 210 is connected to the lock cylinder body 100 or the second lock cylinder extension 220 is connected to the lock cylinder body 100, the first fastener 300 is connected to the same first fastening hole 110, that is, the two lock cylinder extensions 200 are connected to the lock cylinder body 100 in the same position, so that the positions of the through holes provided in the first lock cylinder extension 210 and the second lock cylinder extension 220 are relatively identical, and it is difficult for the first lock cylinder extension 210 and the second lock cylinder extension 220 to be connected in a re-mating manner or to be connected to other lock cylinder extensions 200.

Alternatively, the axial dimension of the first plug extension 210 may be 5cm and the axial dimension of the second plug extension 220 may be 3cm.

In another embodiment, the lock cylinder body 100 is provided with at least two first fastening holes 110 at intervals, the lock cylinder has a first installation state and a second installation state, the first fastening head 310 extends into the first opening a of the first lock cylinder extension 210, and the first fastening rod 320 sequentially penetrates the first opening a and the second opening b of the first lock cylinder extension 210 and extends into one of the at least two first fastening holes 110 to connect the first lock cylinder extension 210 and the lock cylinder body 100, and the axial dimension of the lock cylinder is the sum of the axial dimension of the lock cylinder body 100 and the axial dimension of the first lock cylinder extension 210; with the lock cylinder in the second installed state, the first fastening head 310 extends into the first aperture a of the second lock cylinder extension 220, and the first fastening rod 320 sequentially penetrates the first aperture a and the second aperture b of the second lock cylinder extension 220 and extends into the other of the at least two first fastening holes 110 to connect the second lock cylinder extension 220 and the lock cylinder body 100, where the axial dimension of the lock cylinder is the sum of the axial dimension of the lock cylinder body 100 and the axial dimension of the second lock cylinder extension 220. As can be seen, the connection position between the first lock cylinder extension 210 and the lock cylinder body 100 and the connection position between the second lock cylinder extension 220 and the lock cylinder body 100 are different, so that the position of the stepped hole 204 provided by the first lock cylinder extension 210 is different from the position of the stepped hole 204 provided by the second lock cylinder extension 220.

Furthermore, as shown in fig. 1, the first cylinder extension 210 is further provided with a second fastening hole 211, the cylinder further comprises a second fastening member 400, the second fastening member 400 comprises a second fastening head 410 and a second fastening rod 420 connected to each other, the second fastening head 410 may extend into the first opening a of the second cylinder extension 220, and the second fastening rod 420 may sequentially penetrate the first opening a and the second opening b of the second cylinder extension 220 and extend into the second fastening hole 211 to connect the first cylinder extension 210 and the second cylinder extension 220. Specifically, in the case that the lock cylinder is in the first installation state, the first fastening rod 320 penetrates through the stepped hole 204 of the first lock cylinder extension 210 and extends into one of the first fastening holes 110, the first lock cylinder extension 210 is connected to the lock cylinder body 100, at this time, the second fastening hole 211 of the first lock cylinder extension 210 is opposite to the other first fastening hole 110 of the lock cylinder body 100, and since the other first fastening hole 110 of the lock cylinder body 100 can be correspondingly connected to the stepped hole 204 of the second lock cylinder extension 220, the stepped hole 204 of the second lock cylinder extension 220 can be opposite to the second fastening hole 211, i.e., the second lock cylinder extension 220 is disposed on the side of the first lock cylinder extension 210 facing away from the lock cylinder body 100, and the second lock cylinder extension 220 and the first lock cylinder extension 210 are connected by the second fastener 400. In this way, the stepped bore 204 of the second cylinder extension 220 is not only used for the first fastener 300 to penetrate to connect the cylinder body 100, but also used for the second fastener 400 to penetrate to connect the first cylinder extension 210.

By adopting the embodiment, on the basis that the first lock cylinder extension 210 is connected with the lock cylinder body 100, the second lock cylinder extension 220 can be connected with the first lock cylinder extension 210 through the second fastener 400, so that the first lock cylinder extension 210, the second lock cylinder extension 220 and the lock cylinder body 100 are sequentially connected, the size of the lock cylinder is further increased, and the adjustable range of the axial size of the lock cylinder is enlarged.

In addition, since the second fastening head 410 may also be sunk into the first opening a, the second fastening head 410 may not be exposed at a side of the second lock cylinder extension 220 facing away from the first lock cylinder extension 210, so that the limitation of the axial dimension of the second lock cylinder extension 220 on the length of the second fastening member 400 is reduced, and the second fastening member 400 and the first fastening member 300 may be fastening members with the same length, that is, the first lock cylinder extension 210 and the second lock cylinder extension 220 may be connected by using fastening members with the same length, and the lock cylinder body 100 and the lock cylinder extension 200 may also be connected. Thus, the assembly process is further simplified, and the installation process is more convenient.

Alternatively, the second fastening member 400 may be a second screw, the second fastening head 410 is a nut of the second screw, the second fastening rod 420 is a shaft of the second screw, the second fastening hole 211 is a threaded hole, and further alternatively, the length of the first fastening member 300 may be equal to the length of the second fastening member 400, that is, the thickness of the first fastening head 310 is equal to the thickness of the second fastening head 410, and the length of the first fastening rod 320 is equal to the length of the second fastening rod 420.

In an alternative embodiment, the second lock cylinder extension 220 is further provided with a third fastening hole 221, the third fastening hole 221 may be a threaded hole, the second fastening head 410 may extend into the first opening a of the first lock cylinder extension 210, and the second fastening rod 420 may sequentially penetrate the first opening a and the second opening b of the first lock cylinder extension 210 and extend into the third fastening hole 221 of the second lock cylinder extension 220 to connect the first lock cylinder extension 210 and the second lock cylinder extension 220. Specifically, in the case that the lock cylinder is in the second installation state, the first fastening rod 320 penetrates through the stepped hole 204 of the second lock cylinder extension 220 and extends into one of the first fastening holes 110, the second lock cylinder extension 220 is connected to the lock cylinder body 100, and at this time, the third fastening hole 221 of the second lock cylinder extension 220 is opposite to the other first fastening hole 110 of the lock cylinder body 100, and since the other first fastening hole 110 of the lock cylinder body 100 can be correspondingly connected to the stepped hole 204 of the first lock cylinder extension 210, the stepped hole 204 of the first lock cylinder extension 210 can be opposite to the third fastening hole 221, i.e., the first lock cylinder extension 210 is disposed on the side of the second lock cylinder extension 220 facing away from the lock cylinder body 100, and the first lock cylinder extension 210 and the second lock cylinder extension 220 are connected by the second fastener 400. In this manner, the stepped bore 204 of the first cylinder extension 210 is not only used for the first fastener 300 to penetrate to connect the cylinder body 100, but also used for the second fastener 400 to penetrate to connect the second cylinder extension 220.

By adopting the embodiment, on the contact that the second lock cylinder extension 220 is connected with the lock cylinder body 100, the first lock cylinder extension 210 can be connected with the second lock cylinder extension 220 through the second fastener 400, so that the first lock cylinder extension 210, the second lock cylinder extension 220 and the lock cylinder body 100 are sequentially connected, that is, whether the first lock cylinder extension 210 is connected with the lock cylinder body 100 or the second lock cylinder extension 220 is connected with the lock cylinder body 100, the first lock cylinder extension 210 and the second lock cylinder extension 220 can be further connected, the problem of error in assembly sequence is effectively avoided, and the fault tolerance is further improved.

Of course, in other embodiments, the second lock cylinder extension 220 may not be provided with the third fastening hole 221, and only the second lock cylinder extension 220, the first lock cylinder extension 210, and the lock cylinder body 100 may be connected in sequence when the axial dimension of the lock cylinder needs to be lengthened.

In an alternative embodiment, referring to fig. 1-3, at least two lock cylinder extensions 200 further include a third lock cylinder extension 230, the axial dimensions of the first lock cylinder extension 210, the second lock cylinder extension 220, and the third lock cylinder extension 230 being different, alternatively, the axial dimensions of the third lock cylinder extension 230 may be 1cm, although other axial dimensions of the first lock cylinder extension 210, the second lock cylinder extension 220, and the third lock cylinder extension 230 may be used. The first fastening head 310 may extend into the first opening a of the third lock cylinder extension 230, and the first fastening rod 320 may sequentially penetrate through the first opening a and the second opening b of the third lock cylinder extension 230 and extend into the first fastening hole 110 to connect the third lock cylinder extension 230 and the lock cylinder body 100, where the lock cylinder is in the third installation state, and the axial dimension of the lock cylinder is the sum of the axial dimension of the lock cylinder body 100 and the axial dimension of the third lock cylinder extension 230, and the third lock cylinder extension 230 cannot be connected to the first lock cylinder extension 210 or the second lock cylinder extension 220. Thus, in addition to the manner in which the lock cylinder body 100 is connected to the first lock cylinder extension 210 and the lock cylinder body 100 is connected to the second lock cylinder extension 220, the lock cylinder body 100 may also be connected to the third lock cylinder extension 230, thereby changing the axial dimension of the lock cylinder, further expanding the adjustable range of the axial dimension of the lock cylinder, and expanding the application range of the lock cylinder.

In another embodiment, referring to fig. 1 and 3, the lock cylinder further comprises a third fastener 500, the third fastener 500 comprising a third fastener head 510 and a third fastener rod 520 connected, the third fastener head 510 being extendable into the first aperture a of the third lock cylinder extension 230, the third fastener rod 520 being extendable through the first aperture a and the second aperture b of the third lock cylinder extension 230 and into the second fastening hole 211 or the third fastening hole 221 in sequence. Specifically, in the case that the cylinder body 100 is connected to the first cylinder extension 210, or in the case that the first cylinder extension 210, the second cylinder extension 220, and the cylinder body 100 are sequentially connected, the first cylinder extension 210 participates in extending the axial dimension of the cylinder, and at this time, the stepped hole 204 of the third cylinder extension 230 may be correspondingly communicated with the second fastening hole 211, and the third cylinder extension 230 and the first cylinder extension 210 may be connected through the third fastener 500, further extending the axial dimension of the cylinder; alternatively, in the case where the cylinder body 100 is connected to the second cylinder extension 220, or in the case where the second cylinder extension 220, the first cylinder extension 210, and the cylinder body 100 are sequentially connected, the second cylinder extension 220 participates in extending the axial dimension of the cylinder, and at this time, the stepped hole 204 of the third cylinder extension 230 may be correspondingly communicated with the third fastening hole 221, and the third cylinder extension 230 and the second cylinder extension 220 may be connected by the third fastener 500, thereby further extending the axial dimension of the cylinder.

By adopting the embodiment, the third lock cylinder extension 230 not only can be directly connected with the lock cylinder body 100, but also can be connected with the first lock cylinder extension 210 or the second lock cylinder extension 220, so that the connection of the third lock cylinder extension 230, the first lock cylinder extension 210 or the second lock cylinder extension 220 and the lock cylinder body 100 is realized, and therefore, the third lock cylinder extension 230 can be applicable to different connection combination modes of lock cylinders, which is beneficial to enlarging the adjustable range of lock cylinder sizes and further enlarging the application range of lock cylinders.

Alternatively, the third fastening member 500 may be a third screw, the third fastening head 510 is a nut of the third screw, and the third fastening rod 520 is a shank of the third screw, and further alternatively, the lengths of the third fastening member 500, the first fastening member 300, and the second fastening member 400 may be equal, that is, the thickness of the third fastening head 510 is equal to the thickness of the first fastening head 310 and the second fastening head 410, and the length of the third fastening rod 520 is equal to the lengths of the first fastening rod 320 and the second fastening rod 420.

In an alternative embodiment, third cylinder extension 230 is provided with only one stepped bore 204 and third fastener bar 520 may extend through stepped bore 204 of third cylinder extension 230 and into second fastener bore 211 or third fastener bore 221, that is, third cylinder extension 230 may be connected to one of first cylinder extension 210 and second cylinder extension 220. In another embodiment, the third cylinder extension 230 is provided with at least two stepped holes 204 at intervals, the third fastening rod 520 may extend through one of the at least two stepped holes 204 of the third cylinder extension 230 and into the second fastening hole 211, and the third fastening rod 520 may extend through the other of the at least two stepped holes 204 of the second cylinder extension 220 and into the third fastening hole 221. By adopting the embodiment, the third lock cylinder extension 230 not only can be connected with the lock cylinder body 100, but also can be connected with the first lock cylinder extension 210, and also can be connected with the second lock cylinder extension 220, and the third lock cylinder extension 230 can be applicable to different connection combination modes of lock cylinders, so that the problem of error in assembly sequence is effectively avoided, and the adaptability of fault tolerance is further improved.

Alternatively, as shown in fig. 1, the lock cylinder body 100 may be provided with two first fastening holes 110 at intervals along the vertical direction, the first lock cylinder extension 210 is provided with a stepped hole 204 and a second fastening hole 211 at intervals along the vertical direction, the second lock cylinder extension 220 is provided with a third fastening hole 221 and a stepped hole 204 at intervals along the vertical direction, the third lock cylinder extension 230 is provided with two stepped holes 204 at intervals along the vertical direction, and the stepped hole 204 of the first lock cylinder extension 210 is located above the second fastening hole 211, and may be correspondingly communicated with the third fastening hole 221 or be correspondingly communicated with the first fastening hole 110 located above; the stepped hole 204 of the second cylinder extension 220 is located below the third fastening hole 221, and may be correspondingly communicated with the second fastening hole 211 or be correspondingly communicated with the first fastening hole 110 located below; the stepped hole 204 of the third lock cylinder extension 230 located above may be correspondingly communicated with the first fastening hole 110 of the lock cylinder body 100 located above, or may be correspondingly communicated with the third fastening hole 221 of the second lock cylinder extension 220, and the stepped hole 204 of the third lock cylinder extension 230 located below may be correspondingly communicated with the first fastening hole 110 of the lock cylinder body 100 located below, or may be correspondingly communicated with the second fastening hole 211 of the first lock cylinder extension 210.

In an alternative embodiment, as shown in fig. 3, the lock cylinder extension 200 is provided with a positioning groove 610, the positioning groove 610 is communicated with the second opening b, the lock cylinder body 100 is provided with a boss 620, the first fastening hole 110 is disposed on the boss 620, and the boss 620 can extend into the positioning groove 610. Alternatively, the structure of the boss 620 is the same as that of the positioning groove 610, and the surface of the boss 620 may avoid fitting with the groove of the positioning groove 610. In this way, before the lock cylinder extension 200 is connected with the lock cylinder body 100, the lock cylinder extension 200 is initially positioned through the matching structure of the boss 620 and the positioning groove 610, so that the first fastening hole 110 of the lock cylinder body 100 is guaranteed to be opposite to the stepped hole 204 of the lock cylinder extension 200, and the first fastening piece 300 is convenient to connect the lock cylinder extension 200 and the lock cylinder body 100.

Alternatively, the first cylinder extension 210, the second cylinder extension 220, and the third cylinder extension 230 may each be provided with a positioning groove 610 to mate with the positioning groove 610 provided in the cylinder body 100; of course, when two adjacent lock cylinder extension pieces 200 are connected, the two lock cylinder extension pieces 200 can be positioned by the structures of the boss 620 and the positioning groove 610, further alternatively, the first lock cylinder extension piece 210 can be provided with the boss 620, the second fastening hole 211 is arranged on the boss 620, the second lock cylinder extension piece 220 is provided with the positioning groove 610, and the boss 620 of the first lock cylinder extension piece 210 can extend into the positioning groove 610 of the second lock cylinder extension piece 220; and/or the second lock cylinder extension 220 may be provided with a boss 620, the third fastening hole 221 is provided in the boss 620, the third lock cylinder extension 230 is provided with a positioning groove 610, and the boss 620 of the second lock cylinder extension 220 extends into the positioning groove 610 of the third lock cylinder extension 230. In this way, the mating structure of the boss 620 and the positioning slot 610 can define the relative positions of two adjacent lock cylinder extensions 200 before the two adjacent lock cylinder extensions 200 are connected, so that the second fastener 400 or the third fastener 500 can be used for connection.

Of course, in other embodiments, the lock cylinder body 100 may not be provided with the boss 620, the surface of the lock cylinder body 100 may be directly provided with the first fastening hole 110, and meanwhile, the lock cylinder extension 200 may not be provided with the positioning groove 610, so that when the lock cylinder body 100 and the lock cylinder extension 200 are connected, the external force is utilized to ensure that the stepped hole 204 is correspondingly communicated with the first fastening hole 110.

In an alternative embodiment, the lock cylinder extension 200 is an integral structure, the lock cylinder extension 200 is directly provided with the stepped hole 204, and a through hole for the key to extend into is formed, the through hole is opposite to the lock cylinder body 100, and the through hole is communicated with the first lock cylinder hole 120, and the through hole is larger than the first lock cylinder hole 120 in size. Thus, the key can extend into the through hole and further extend into the first lock cylinder hole 120, but since the first lock cylinder hole 120 is not directly exposed, the user cannot easily insert the key into the first lock cylinder hole 120 accurately.

In another embodiment, referring to fig. 1, each lock cylinder extension 200 includes an extension shaft 201, a ring body 202, and a connection protrusion 203, where the lock cylinder body 100 is provided with a first lock cylinder hole 120, the extension shaft 201 is provided with a second lock cylinder hole c, and the second lock cylinder hole c can correspondingly communicate with the first lock cylinder hole 120; the ring body 202 is sleeved outside the extension shaft 201, the extension shaft 201 is in running fit with the ring body 202, the connecting protrusion 203 is arranged outside the ring body 202, and the connecting protrusion 203 is provided with a stepped hole 204. Alternatively, the connection protrusion 203 and the ring body 202 may be in a single structure or in a split structure. With the connection protrusion 203 connected to the key cylinder body 100 by the first fastener 300, the first key cylinder hole 120 communicates with the second key cylinder hole c, the key penetrates the second key cylinder hole c and is inserted into the first key cylinder hole 120, and the guide shaft rotates with respect to the ring body 202 during the key rotation.

In this way, when the connection protrusion 203 is in a connection state with the lock cylinder body 100, the ring body 202 limits the extension shaft 201, the position of the extension shaft 201 relative to the lock cylinder body 100 is constant, and the second lock cylinder hole c can be directly exposed, so that a user can directly observe the position of the second lock cylinder hole c and accurately insert a key into the second lock cylinder hole c, and the first lock cylinder hole 120 and the second lock cylinder hole c can be directly communicated, so that the key can be accurately inserted into the first lock cylinder hole 120 by inserting the key into the second lock cylinder hole c, thereby realizing convenient unlocking.

In the solution of the present utility model, as shown in fig. 1-3, the lock cylinder further comprises a shielding member 700 for shielding the stepped hole 204, the shielding member 700 being arranged at a side of the lock cylinder extension 200 facing away from the lock cylinder body 100. Optionally, the lock cylinder body 100, the first lock cylinder extension 210, the second lock cylinder extension 220 and the third lock cylinder extension 230 are sequentially connected, the shielding member 700 is disposed on one side of the third lock cylinder extension 230 opposite to the lock cylinder body 100, the shielding member 700 may include a shielding portion 720 and a shielding ring 730, the shielding portion 720 is opposite to the connection protrusion 203 so as to shield the stepped hole 204, the shielding ring 730 may be extended by a guide shaft, the guide shaft is prevented from being transitionally exposed, the shielding ring 730 shields the ring body 202, and the connecting piece 710 is connected with the shielding portion 720. With the adoption of the embodiment, the shielding piece 700 is utilized to shield one side of the lock cylinder extension piece 200, which is away from the lock cylinder body 100, so that the attractive performance of the lock cylinder is improved.

Of course, in other embodiments, the lock cylinder may be provided without the shield 700, with the stepped bore 204 provided in the lock cylinder extension 200 being directly exposed.

In an alternative embodiment, the edge of the shield 700 is provided with a tab 710, the tab 710 is provided with a first attachment hole 711, the lock cylinder extension 200 is provided with a second attachment hole 205, and the lock cylinder further comprises a fourth fastener 800, the fourth fastener 800 being adapted to extend through the first attachment hole 711 and into the second attachment hole 205 to attach the shield 700 to the lock cylinder extension 200. Alternatively, the first connection holes 711 may be through holes, the second connection holes 205 may be threaded holes, and each cylinder extension 200 may be provided with a second connection hole 205.

In another embodiment, at least two connecting pieces 710 are disposed at intervals on the edge of the shielding member 700, wherein the two connecting pieces 710 are disposed opposite to each other, each connecting piece 710 is provided with a first connecting hole 711, the lock cylinder extension 200 is provided with at least two second connecting holes 205, the lock cylinder further comprises at least two fourth fastening pieces 800, the connecting pieces 710 and the second connecting holes 205 are respectively in one-to-one correspondence, and the fourth fastening pieces 800 can penetrate through the corresponding first connecting holes 711 and extend into the corresponding second connecting holes 205 to connect the shielding member 700 and the lock cylinder extension 200. The fourth fastener 800 may be a fastener having a connection effect such as a screw, or the like. With this embodiment, the different positions of the shielding member 700 are connected with the lock cylinder extension 200 through different fourth fasteners 800, which is beneficial to improving the connection stability of the shielding member 700 and the lock cylinder extension 200, and the two connecting pieces 710 are oppositely arranged, so that the two fourth fasteners 800 are oppositely arranged, the stress of the shielding member 700 is relatively uniform, and the deformation caused by uneven stress of the shielding member 700 is avoided.

In an alternative embodiment, the edge of the shield 700 is provided with a connecting piece 710, the connecting piece 710 is provided with a first connecting hole 711, the lock cylinder extension 200 is provided with a second connecting hole 205, the lock cylinder further comprises a fourth fastener 800, the fourth fastener 800 can penetrate the first connecting hole 711 and extend into the second connecting hole 205, and the axis of the first connecting hole 711 is collinear with the axis of the second connecting hole 205, wherein the second connecting hole 205 can be a threaded hole.

In another embodiment, referring to fig. 4, an included angle between a direction from the first port to the second port of the first connecting hole 711 and the first direction is smaller than 90 °, the direction from the first port to the second port of the first connecting hole 711, that is, the direction in which the axis of the first connecting hole 711 is located, the first port is adjacent to the second connecting hole 205, and the second port is far away from the second connecting hole 205, and the first direction is an arrangement direction between the lock cylinder extension 200 and the lock cylinder body 100, that is, an included angle between the axis of the first connecting hole 711 and the axis of the second connecting hole 205. Optionally, the angle between the direction of the first port to the second port of the first connection hole 711 and the first direction ranges from 65 ° to 75 °, the angle between the axis of the first connection hole 711 and the axis of the second connection hole 205 ranges from 15 ° to 25 °, further optionally, the angle between the direction of the first port to the second port of the first connection hole 711 and the first direction ranges from 75 °, and the angle between the axis of the first connection hole 711 and the axis of the second connection hole 205 ranges from 15 °. Wherein the first connecting hole 711 is a threaded hole, and an end of the fourth fastener 800 abuts against a bottom wall of the second connecting hole 205.

With this embodiment, the fourth fastener 800 is disposed obliquely with respect to the connecting piece 710, and then the fourth fastener 800 applies an oblique force to the connecting piece 710, i.e., the shield 700, which has a component force in the axial direction in the same direction as the direction in which the lock cylinder extension 200 is disposed with the lock cylinder body 100, which component force is beneficial to promote tight connection of the shield 700 with the lock cylinder extension 200 and to enhance the connection stability of the shield 700 with the lock cylinder extension 200.

Based on the lock cylinder disclosed by the utility model, the embodiment of the utility model also provides a door lock, and the door lock comprises the lock cylinder in the embodiment. Optionally, the door lock may further comprise a lock panel, wherein the lock panel is provided with a mounting hole, and the lock cylinder may extend into the mounting hole.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (11)

1. The utility model provides a lock core, its characterized in that includes lock core body (100), two at least lock core extension piece (200) and first fastener (300), the axial dimensions of at least two in two at least lock core extension pieces (200) are different, first fastener (300) are including first fastening head (310) and first fastening rod (320) that link to each other, each lock core extension piece (200) are equipped with shoulder hole (204) along self axial respectively, shoulder hole (204) are including first trompil (a) and the second trompil (b) that communicate in proper order, first trompil (a) are used for confession first fastening head (310) are stretched into and confession first fastening rod (320) run through, lock core body (100) are equipped with first fastening hole (110), first fastening rod (320) can run through in proper order first trompil (a) of extension piece (200) and second trompil (b) and stretch into first fastening hole (110) to connect lock core body (200) and lock core (100).

2. The lock cylinder according to claim 1, wherein the lock cylinder body (100) is provided with at least two first fastening holes (110) at intervals, the at least two lock cylinder extensions (200) comprise a first lock cylinder extension (210) and a second lock cylinder extension (220), the axial dimension of the first lock cylinder extension (210) is different from the axial dimension of the second lock cylinder extension (220),

the lock cylinder has a first installation state and a second installation state, and the first fastening rod (320) sequentially penetrates through the first opening (a) and the second opening (b) of the first lock cylinder extension (210) and extends into one of the at least two first fastening holes (110) when the lock cylinder is in the first installation state; the first fastening rod (320) penetrates the first and second apertures (a, b) of the second lock cylinder extension (220) in sequence and extends into the other of the at least two first fastening holes (110) with the lock cylinder in the second installed state;

the first lock cylinder extension piece (210) is further provided with a second fastening hole (211), the lock cylinder further comprises a second fastening piece (400), the second fastening piece (400) comprises a second fastening head (410) and a second fastening rod (420) which are connected, the second fastening head (410) can extend into the first hole (a) of the second lock cylinder extension piece (220), and the second fastening rod (420) can sequentially penetrate through the first hole (a) and the second hole (b) of the second lock cylinder extension piece (220) and extend into the second fastening hole (211) so as to connect the first lock cylinder extension piece (210) and the second lock cylinder extension piece (220).

3. The lock cylinder according to claim 2, wherein the second lock cylinder extension (220) is further provided with a third fastening hole (221), the second fastening head (410) being extendable into the first aperture (a) of the first lock cylinder extension (210), the second fastening rod (420) being sequentially extendable through the first aperture (a) and the second aperture (b) of the first lock cylinder extension (210) and into the third fastening hole (221) of the second lock cylinder extension (220).

4. A lock cylinder according to claim 3, wherein the at least two lock cylinder extensions (200) further comprise a third lock cylinder extension (230), the first lock cylinder extension (210), the second lock cylinder extension (220) and the third lock cylinder extension (230) being of different axial dimensions, the first fastening head (310) being extendable into the first aperture (a) of the third lock cylinder extension (230), the first fastening rod (320) being sequentially extendable through the first aperture (a) and the second aperture (b) of the third lock cylinder extension (230) and into the first fastening hole (110);

the lock cylinder further comprises a third fastening piece (500), the third fastening piece (500) comprises a third fastening head (510) and a third fastening rod (520) which are connected, the third fastening head (510) can extend into the first opening (a) of the third lock cylinder extension piece (230), and the third fastening rod (520) can sequentially penetrate through the first opening (a) and the second opening (b) of the third lock cylinder extension piece (230) and extend into the second fastening hole (211) or the third fastening hole (221).

5. The lock cylinder according to claim 4, wherein the third lock cylinder extension (230) is provided with at least two of the stepped holes (204) at intervals, the third fastening rod (520) is insertable through one of the at least two stepped holes (204) of the third lock cylinder extension (230) and into the second fastening hole (211), and the third fastening rod (520) is insertable through the other of the at least two stepped holes (204) of the second lock cylinder extension (220) and into the third fastening hole (221).

6. The lock cylinder according to claim 1, wherein the lock cylinder extension (200) is provided with a positioning groove (610), the positioning groove (610) is communicated with the second opening (b), the lock cylinder body (100) is provided with a boss (620), the first fastening hole (110) is arranged on the boss (620), and the boss (620) can extend into the positioning groove (610).

7. The lock cylinder according to claim 1, wherein each lock cylinder extension (200) comprises an extension shaft (201), a ring body (202) and a connecting protrusion (203), the ring body (202) is sleeved outside the extension shaft (201), the connecting protrusion (203) is arranged outside the ring body (202), and the connecting protrusion (203) is provided with the stepped hole (204);

the lock cylinder body (100) is provided with a first lock cylinder hole (120), the extension shaft (201) is provided with a second lock cylinder hole (c), and the first lock cylinder hole (120) is communicated with the second lock cylinder hole (c) under the condition that the connecting protrusion (203) is connected with the lock cylinder body (100) through the first fastener (300).

8. The lock cylinder according to claim 1, further comprising a shield (700) for shielding the stepped bore (204), the shield (700) being arranged at a side of the lock cylinder extension (200) facing away from the lock cylinder body (100).

9. The lock cylinder according to claim 8, wherein at least two connecting pieces (710) are arranged at intervals on the edge of the shielding member (700), wherein the two connecting pieces (710) are arranged opposite to each other, each connecting piece (710) is provided with a first connecting hole (711), the lock cylinder extension member (200) is provided with at least two second connecting holes (205), the lock cylinder further comprises at least two fourth fastening pieces (800), the connecting pieces (710) and the second connecting holes (205) are respectively in one-to-one correspondence, and the fourth fastening pieces (800) can penetrate the corresponding first connecting holes (711) and extend into the corresponding second connecting holes (205) so as to connect the shielding member (700) and the lock cylinder extension member (200).

10. The lock cylinder according to claim 8, characterized in that the edge of the shield (700) is provided with a connecting piece (710), the connecting piece (710) is provided with a first connecting hole (711), the lock cylinder extension (200) is provided with a second connecting hole (205), the lock cylinder further comprises a fourth fastener (800), the fourth fastener (800) can penetrate the first connecting hole (711) and extend into the second connecting hole (205), and the angle between the direction from the first port to the second port of the first connecting hole (711) and the first direction is smaller than 90 °, the first port is adjacent to the second connecting hole (205), and the first direction is the setting direction of the lock cylinder extension (200) and the lock cylinder body (100).

11. A door lock comprising a lock cylinder according to any one of claims 1 to 10.